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See detailPension Insecurity and Wellbeing in Europe
Olivera, Javier; Ponomarenko, Valentina UL

in Journal of Social Policy (in press)

This paper studies pension insecurity in a sample of non-retired individuals aged 50 years or older from 18 European countries. We capture pension insecurity with the subjective expectations on the ... [more ▼]

This paper studies pension insecurity in a sample of non-retired individuals aged 50 years or older from 18 European countries. We capture pension insecurity with the subjective expectations on the probability that the government will reduce the pensions of the individual before retirement or will increase the statutory retirement age. We argue that changes in economic conditions and policy affect the formation of such probabilities, and through this, subjective wellbeing. In particular, we study the effects of pension insecurity on subjective wellbeing with pooled linear models, regressions per quintiles and instrumental variables. We find a statistically significant, stable and negative association between pension insecurity and subjective wellbeing. Our findings reveal that the individuals who are more affected by pension insecurity are those who are further away fromtheir retirement, have lower income, assess their life survival as low, have higher cognitive abilities and do not expect private pension payments. [less ▲]

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See detailLettere alla redazione : il caso della “Buona Domenica” lussemburghese Un fenomeno mediatico italo-lussemburghese
Cicotti, Claudio UL

in El Ghibli - Rivista di Letteratura della Migrazione (in press)

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See detaile3-service: an ontology for needs-driven real-world service bundling in a multi-supplier setting
De Kinderen, Sybren UL; de Leenheer, Pieter; Gordijn, Jaap et al

in Applied Ontology (in press)

Businesses increasingly offer their services electronically via the Web. Take for example an Internet Service Provider. An ISP offers a variety of services, including raw bandwidth, IP connectivity, and ... [more ▼]

Businesses increasingly offer their services electronically via the Web. Take for example an Internet Service Provider. An ISP offers a variety of services, including raw bandwidth, IP connectivity, and Domain Name resolution. Although in some cases a single service already satisfies a customer need, in many situations a customer need is so complex that a bundle of services is needed to satisfy the need, as with the ISP example. In principle, each service in a bundle can be provisioned by a different supplier. This paper proposes an ontology, e3service , that can be used to formally capture customer needs, services, and multisupplier service bundles of these. In addition, this paper contributes a process called PCM2 to reason with the ontology. First, a customer need is identified for which desired consequences are elicited. Then, the desired set of consequences is matched with consequences associated with services. The matching process results in a service bundle, satisfying the customer need, containing services that each can be provided by different suppliers. PCM2 is inspired by a family of formal reasoning methods called Propose-Critique-Modify (PCM). However, whereas PCM methods emphasize solution generation from a given set of requirements, our reasoning process treats the space of requirements as a first class citizen. Hence PCM2 : the requirements space and solution space are equally important. How the reasoning and matching process practically works, is illustrated by an industry strength case study in the healthcare domain. [less ▲]

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See detailCompetition Numbers, Quasi-Line Graphs and Holes
McKay, Brendan; Schweitzer, Pascal; Schweitzer, Patrick UL

in SIAM Journal on Discrete Mathematics (in press)

The competition graph of an acyclic directed graph D is the undirected graph on the same vertex set as D in which two distinct vertices are adjacent if they have a common out-neighbor in D. The ... [more ▼]

The competition graph of an acyclic directed graph D is the undirected graph on the same vertex set as D in which two distinct vertices are adjacent if they have a common out-neighbor in D. The competition number of an undirected graph G is the least number of isolated vertices that have to be added to G to make it the competition graph of an acyclic directed graph. We resolve two conjectures concerning competition graphs. First we prove a conjecture of Opsut by showing that the competition number of every quasi-line graph is at most 2. Recall that a quasi-line graph, also called a locally co-bipartite graph, is a graph for which the neighborhood of every vertex can be partitioned into at most two cliques. To prove this conjecture we devise an alternative characterization of quasi-line graphs to the one by Chudnovsky and Seymour. Second, we prove a conjecture of Kim by showing that the competition number of any graph is at most one greater than the number of holes in the graph. Our methods also allow us to prove a strengthened form of this conjecture recently proposed by Kim, Lee, Park and Sano, showing that the competition number of any graph is at most one greater than the dimension of the subspace of the cycle space spanned by the holes. [less ▲]

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See detailQuantization of Poisson manifolds from the integrability of the modular function
Qiu, Jian UL

in Communications in Mathematical Physics (in press)

We discuss a framework for quantizing a Poisson manifold via the quantization of its symplectic groupoid, that combines the tools of geometric quantization with the results of Renault's theory of groupoid ... [more ▼]

We discuss a framework for quantizing a Poisson manifold via the quantization of its symplectic groupoid, that combines the tools of geometric quantization with the results of Renault's theory of groupoid C*-algebras. This setting allows very singular polarizations. In particular we consider the case when the modular function is "multiplicatively integrable", i.e. when the space of leaves of the polarization inherits a groupoid structure. If suitable regularity conditions are satisfied, then one can define the quantum algebra as the convolution algebra of the subgroupoid of leaves satisfying the Bohr-Sommerfeld conditions. We apply this procedure to the case of a family of Poisson structures on CP_n, seen as Poisson homogeneous spaces of the standard Poisson-Lie group SU(n+1). We show that a bihamiltoniam system on CP_n defines a multiplicative integrable model on the symplectic groupoid; we compute the Bohr-Sommerfeld groupoid and show that it satisfies the needed properties for applying Renault theory. We recover and extend Sheu's description of quantum homogeneous spaces as groupoid C*-algebras. [less ▲]

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See detailHow some bankers made a million by trading just two securities?
Rinne, Kalle UL; Suominen, Matti UL

in Journal of Empirical Finance (in press)

We study a pair trading strategy that utilizes short-term return reversals in the stock market. Using U.S. data, we show that returns to our pair trading strategy exceed reasonable estimates for ... [more ▼]

We study a pair trading strategy that utilizes short-term return reversals in the stock market. Using U.S. data, we show that returns to our pair trading strategy exceed reasonable estimates for transaction costs. The strategy also generates positive alpha when controlling for the standard risk factors. Second, using transaction level data from Finland, focusing on a popular pair, we provide evidence that these kinds of pair trading returns are compensation from providing liquidity. On the days when the expected returns to our pair trading strategy are the highest, the trading volume is abnormally high and, judging from active brokers’ net trades, nearly 45% of all brokers (or their customers) engage in pair trading in accordance with our trading strategy. These brokers are mainly counterparties to few brokers that trade large quantities of stocks inconsistent with our strategy. [less ▲]

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See detailDevelopment of a Cued Pro- and Antisaccade Paradigm: An Indirect Measure to Explore Automatic Components of Sexual Interest
Oberlader, Verena A.; Ettinger, Ulrich; Banse, Rainer et al

in Archives of Sexual Behavior (in press)

We developed a cued pro- and antisaccade paradigm (CPAP) to explore automatic components of sexual interest. Heterosexual participants (n = 32 women, n = 25 men) had to perform fast eye movements towards ... [more ▼]

We developed a cued pro- and antisaccade paradigm (CPAP) to explore automatic components of sexual interest. Heterosexual participants (n = 32 women, n = 25 men) had to perform fast eye movements towards and away from sexually relevant or irrelevant stimuli across a congruent (i.e. prosaccade towards sexually relevant stimuli, antisaccade away from sexually irrelevant stimuli) and an incongruent condition (i.e. prosaccade towards sexually irrelevant stimuli, antisaccade away from sexually relevant stimuli). We hypothesized that pro- and antisaccade performance would be influenced by the sexual interest-specific relevance of the presented stimulus (i.e., nude female or male stimulus) and the instructed task (i.e., pro- or antisaccade) and, thus, differ meaningfully between conditions. Results for prosaccades towards sexually relevant stimuli in the congruent condition showed that error rates were lower and latencies were shorter compared with prosaccades towards sexually irrelevant stimuli in the incongruent condition, but only for male participants. In addition, error rates for antisaccades away from sexually irrelevant stimuli in the congruent condition were lower than for antisaccades away from sexually relevant stimuli in the incongruent condition, for both female and male participants. Latencies of antisaccades, however, did not differ between conditions. In comparison with established indirect sexual interest paradigms, the CPAP benefits from measuring highly automated processes less prone to deliberate control. To this end, the CPAP could be applied to explore the interplay of early automatic and deliberate components of sexual information processing. [less ▲]

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See detailOn the singular sheaves in the fine Simpson moduli spaces of 1-dimensional sheaves supported on plane quartics
Iena, Oleksandr UL

in Rendiconti dell'Istituto di Matematica dell'Università di Trieste (in press)

In the case of the fine Simpson moduli spaces of 1-dimensional sheaves supported on plane quartics, the subvariety of sheaves that are not locally free on their support is connected, singular, and has ... [more ▼]

In the case of the fine Simpson moduli spaces of 1-dimensional sheaves supported on plane quartics, the subvariety of sheaves that are not locally free on their support is connected, singular, and has codimension 2. [less ▲]

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See detailFamily income and material deprivation: do they matter for sleep quality and quantity in early life? Evidence from a longitudinal study.
Barazzetta, Marta UL; Ghislandi, Simone

in Sleep (in press)

Study Objectives: The aim of the present paper is to investigate the determinants of sleeping patterns in children up to age 9 on a large and geographically homogeneous sample of British children and ... [more ▼]

Study Objectives: The aim of the present paper is to investigate the determinants of sleeping patterns in children up to age 9 on a large and geographically homogeneous sample of British children and parents, focusing in particular on the role of economic and social factors, specifically on income. Methods: The data of this study come from the Avon Longitudinal Study of Parents and Children, a long-term health research project that recruited over 14,000 pregnant women who were due to give birth between April 1991 and December 1992 in Bristol and its surrounding areas, including some of Somerset and Gloucestershire. Logistic regression models for the sleep problems dummies and log-linear models for the sleep quantity. Results: One additional item in the material deprivation index is associated to an increase of around 10% to 20% in the odds of having at least one sleep problem. Similarly, children from the richest families are less likely to have any sleep problem up to 115 months (around 20% reduction in the odds). Mother’s characteristics (i.e. education and mental health in the pregnancy period) are also significant predictors. Sleep quantity does not vary much and is not sensitive to socioeconomic factors. Conclusion: Exposure to income-related inequalities affects child sleep. Further research is needed in order to understand if sleep in early life influence future health and economic trajectories. [less ▲]

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See detailStructural changes in the labor market and the rise of early retirement in France and Germany
Batyra, Anna; de la Croix, David; Pierrard, Olivier et al

in German Economic Review (in press)

The rise of early retirement in Europe is typically attributed to the European system of taxes and transfers. A model with an imperfectly competitive labor market allows us to consider also the effects of ... [more ▼]

The rise of early retirement in Europe is typically attributed to the European system of taxes and transfers. A model with an imperfectly competitive labor market allows us to consider also the effects of bargaining power and of matching efficiency on pre-retirement. We find that lower bargaining power of workers and declining matching efficiency have been important determinants of early retirement in France and Germany. These structural changes, combined with early-retirement transfers and population aging, are also consistent with the employment and unemployment rates, labor share and seniority premia. [less ▲]

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See detailIterative observer-based state and parameter estimation for linear systems
Aalto, Atte UL

in ESAIM: Control, Optimisation and Calculus of Variations (in press)

We propose an iterative method for joint state and parameter estimation using measurements on a time interval [0,T] for systems that are backward output stabilizable. Since this time interval is fixed ... [more ▼]

We propose an iterative method for joint state and parameter estimation using measurements on a time interval [0,T] for systems that are backward output stabilizable. Since this time interval is fixed, errors in initial state may have a big impact on the parameter estimate. We propose to use the back and forth nudging (BFN) method for estimating the system’s initial state and a Gauss–Newton step between BFN iterations for estimating the system parameters. Taking advantage of results on the optimality of the BFN method, we show that for systems with skew-adjoint generators, the initial state and parameter estimate minimizing an output error cost functional is an attractive fixed point for the proposed method. We treat both linear source estimation and bilinear parameter estimation problems. [less ▲]

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See detailThe representativeness of lecture listening coursebooks: language, lectures, research-informedness
Deroey, Katrien UL

in Journal of English for Academic Purposes (in press)

This paper examines 25 lecture listening coursebooks for their representativeness of ‘real’ lectures with a view to helping EAP practitioners make informed decisions about materials selection and ... [more ▼]

This paper examines 25 lecture listening coursebooks for their representativeness of ‘real’ lectures with a view to helping EAP practitioners make informed decisions about materials selection and development. The aspects of representativeness examined are language, lecture authenticity and research-informedness. For the analysis of language, signposts of important points in the coursebooks are compared with those retrieved from a corpus of 160 authentic lectures. The EAP lectures are analysed in terms of their source, delivery and length. The materials are also reviewed for their use of findings from research into listening comprehension and lecture discourse. Results suggest that current lecture listening materials often do not reflect the language and lectures students are likely encounter on their degree programmes. Moreover, materials are typically not (systematically) informed by listening and lecture discourse research. These findings highlight the need for EAP practitioners to approach published materials critically and supplement or modify them in ways that would better serve students. The paper concludes with recommendations on how this could be done. [less ▲]

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See detailSafety-aware Location Privacy in VANET: Evaluation and Comparison
Emara, Karim Ahmed Awad El-Sayed UL

in IEEE Transactions on Vehicular Technology (in press)

VANET safety applications broadcast cooperative awareness messages (CAM) periodically to provide vehicles with continuous updates about the surrounding traffic. The periodicity and the spatiotemporal ... [more ▼]

VANET safety applications broadcast cooperative awareness messages (CAM) periodically to provide vehicles with continuous updates about the surrounding traffic. The periodicity and the spatiotemporal information contained in these messages allow a global adversary to track vehicle movements. Many privacy schemes have been proposed for VANET, but only few schemes consider their impact on safety applications. Also, each scheme is evaluated using inconsistent metrics and unrealistic vehicle traces, which makes comparing the actual performance of different schemes in the wild more difficult. In this paper, we aim to fill this gap and compare different privacy schemes not only in terms of the privacy gained but also their impact on safety applications. A distortion-based privacy metric is initially proposed and compared with other popular privacy metrics showing its effectiveness in measuring privacy. A practical safety metric which is based on Monte Carlo analysis is then proposed to measure the QoS of two safety applications: forward collision warning and lane change warning. Using realistic vehicle traces, six state-of-the-art VANET privacy schemes are evaluated and compared in terms of the proposed privacy and safety metrics. Among the evaluated schemes, it was found that the coordinated silent period scheme achieves the best privacy and QoS levels but fully synchronized silence among all vehicles is a practical challenge. The CAPS and CADS schemes provide a practical compromise between privacy and safety since they employ only the necessary silence periods to prevent tracking and avoid changing pseudonyms in trivial situations. [less ▲]

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See detailFunctional impairment matters in the screening and diagnosis of gaming disorder
Billieux, Joël UL; King, Daniel Luke; Higuchi, Susumu et al

in Journal of Behavioral Addictions (in press)

This commentary responds to Aarseth et al.’s (in press) criticisms that the ICD-11 Gaming Disorder proposal would result in “moral panics around the harm of video gaming” and “the treatment of abundant ... [more ▼]

This commentary responds to Aarseth et al.’s (in press) criticisms that the ICD-11 Gaming Disorder proposal would result in “moral panics around the harm of video gaming” and “the treatment of abundant false-positive cases.” The ICD-11 Gaming Disorder avoids potential “overpathologizing” with its explicit reference to functional impairment caused by gaming and therefore improves upon a number of flawed previous approaches to identifying cases with suspected gaming-related harms. We contend that moral panics are more likely to occur and be exacerbated by misinformation and lack of understanding, rather than proceed from having a clear diagnostic system [less ▲]

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See detailStartups' innovation behavior: An investigation into the role of entrepreneurial motivations
Gundolf, Katherine; Gast, Johanna; Geraudel, Mickaël UL

in International Journal of Innovation Management (in press)

Although it is argued that competitiveness and successful performance in the long-term is facilitated if ventures engage in innovations in diverse domains (e.g. product, process, production ... [more ▼]

Although it is argued that competitiveness and successful performance in the long-term is facilitated if ventures engage in innovations in diverse domains (e.g. product, process, production, administration, etc.), the development of diversified innovation has been rarely analyzed. As the entrepreneurs’ initial motivations to startup are likely to influence their subsequent entrepreneurial behavior, this study aims to explore whether and how entrepreneurial motivations affect diversified innovation behavior in startups. Using data on over 48.000 French startups, we present novel insights into the consequences of entrepreneurial motivation for innovation behavior. In fact, we find that distinct startup motivations can have different effects on the development of diverse innovations. As such, our findings contribute to extant research on innovation development of startups and advance the present understanding of the determinants of startups’ innovative behavior [less ▲]

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See detailThe European Center of Science Productivity: Research Universities and Institutes in France, Germany, and the United Kingdom
Powell, Justin J W UL; Dusdal, Jennifer UL

in International Perspectives on Education & Society (in press), 33

Growth in scientific productivity over the 20th century resulted significantly from three major countries in European science—France, Germany, and the United Kingdom. We chart the development of ... [more ▼]

Growth in scientific productivity over the 20th century resulted significantly from three major countries in European science—France, Germany, and the United Kingdom. We chart the development of universities and research institutes that bolster Europe’s key position in global science. We uncover both stable and dynamic patterns of productivity in the fields of STEM, including health, over the twentieth century. On-going internationalization of higher education and science has been accompanied by increasing competition and collaboration. Despite policy goals to foster innovation and expand research capacity, policies cannot fully account for the differential growth of scientific productivity we chart from 1975 to 2010. Our neoinstitutional framework facilitates explanation of differences in institutional settings, organizational forms, and organizations that produce the most European research. We measure growth of published peer-reviewed articles indexed in Thomson Reuters’ Science Citation Index Expanded (SCIE). Organizational forms vary in their contributions, with universities accounting for nearly half but rising in France; ultrastable in Germany at four-fifths, and growing at around two-thirds in the UK. Differing institutionalization pathways created the conditions necessary for continuous, but varying growth in scientific productivity in the European center of global science. The research university is central in all three countries, and we identify organizations leading in research output. Few analyses explicitly compare across time, space, and different levels of analysis. We show how important European science has been to overall global science productivity. In-depth comparisons, especially the organizational fields and forms in which science is produced, are crucial if policy is to support research and development. [less ▲]

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See detailTeachers’ assessment competence: Integrating knowledge-, process-, and product-oriented approaches into a competence-oriented conceptual model
Herppich, Stephanie; Praetorius, Anna-Katharina; Hetmanek, Andreas et al

in Teaching and Teacher Education (in press)

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See detailIslamic banking development and access to credit
Leon, Florian UL; Weill, Laurent

in Pacific-Basin Finance Journal (in press)

The recent expansion of Islamic banks raises questions on its economic implications. The aim of this paper is to investigate the impact of Islamic banking development on access to credit. We combine data ... [more ▼]

The recent expansion of Islamic banks raises questions on its economic implications. The aim of this paper is to investigate the impact of Islamic banking development on access to credit. We combine data from a unique hand-collected database that covers Islamic banks with firm-level data covering developing and emerging countries over the period of 2006 to 2009. We find that Islamic banking development has overall no impact on credit constraints, while banking development and conventional banking development alleviate obstacles to financing. However Islamic banking development exerts a positive impact on access to credit when conventional banking development is low. Hence we support the view that Islamic banking does not overall alleviate obstacles to financing, but it can act as substitute to conventional banking. [less ▲]

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See detailPivotal decomposition schemes inducing clones of operations
Couceiro, Miguel; Teheux, Bruno UL

in Contributions to Algebra and Geometry (in press)

We study pivotal decomposition schemes and investigate classes of pivotally decomposable operations. We provide sufficient conditions on pivotal operations that guarantee that the corresponding classes of ... [more ▼]

We study pivotal decomposition schemes and investigate classes of pivotally decomposable operations. We provide sufficient conditions on pivotal operations that guarantee that the corresponding classes of pivotally decomposable operations are clones, and show that under certain assumptions these conditions are also necessary. In the latter case, the pivotal operation together with the constant operations generate the corresponding clone. [less ▲]

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See detailOn the comprehensibility and perceived privacy protection of indirect questioning techniques
Hoffmann, Adrian; Waubert de Puiseau, Berenike; Schmidt, Alexander F. UL et al

in Behavior Research Methods (in press)

On surveys that assess sensitive personal attributes, indirect questioning aims at increasing respondents’ willingness to answer truthfully by protecting confidentiality. However, the assumption that ... [more ▼]

On surveys that assess sensitive personal attributes, indirect questioning aims at increasing respondents’ willingness to answer truthfully by protecting confidentiality. However, the assumption that subjects understand questioning procedures fully and trust them to protect their privacy is tested rarely. In a scenario-based design, we compared four indirect questioning procedures in terms of comprehensibility and perceived privacy protection. All indirect questioning techniques were found less comprehensible for respondents than a conventional direct question used for comparison. Less-educated respondents experienced more difficulties when confronted with any indirect questioning technique. Regardless of education, the Crosswise Model was found most comprehensible among the four indirect methods. Indirect questioning was perceived to increase privacy protection in comparison to a direct question. Unexpectedly, comprehension and perceived privacy protection did not correlate. We recommend assessing these factors separately in future evaluations of indirect questioning. [less ▲]

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See detailNew Kolmogorov bounds for functionals of binomial point processes
Peccati, Giovanni UL; Lachièze-Rey, Raphael

in Annals of Applied Probability (in press)

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See detailGender-specific expression of ubiquitin-specific peptidase 9 modulates tau expression and phosphorylation: possible implications for tauopathies
Köglsberger, Sandra UL; Cordero Maldonado, Maria Lorena UL; Antony, Paul UL et al

in Molecular Neurobiology (in press)

Public transcriptomics studies have shown that several genes display pronounced gender differences in their expression in the human brain, which may influence the manifestations and risk for neuronal ... [more ▼]

Public transcriptomics studies have shown that several genes display pronounced gender differences in their expression in the human brain, which may influence the manifestations and risk for neuronal disorders. Here we apply a transcriptome-wide analysis to discover genes with gender-specific expression and significant alterations in public post mortem brain tissue from Alzheimer’s disease (AD) patients compared to controls. We identify the sex-linked ubiquitin specific peptidase 9 (USP9) as an outstanding candidate gene with highly significant expression differences between the genders and male-specific under-expression in AD. Since previous studies have shown that USP9 can modulate the phosphorylation of the AD-associated protein MAPT, we investigate functional associations between USP9 and MAPT in further detail. After observing a high positive correlation between the expression of USP9 and MAPT in the public transcriptomics data, we show that USP9 knockdown results in significantly decreased MAPT expression in a DU145 cell culture model and a concentration-dependent decrease for the MAPT orthologs mapta and maptb in a zebrafish model. From the analysis of microarray and qRT-PCR experiments for the knockdown in DU145 cells and prior knowledge from the literature, we derive a data-congruent model for a USP9-dependent regulatory mechanism modulating MAPT expression via BACH1 and SMAD4. Overall, the analyses suggest USP9 may contribute to molecular gender differences observed in tauopathies and provide a new target for intervention strategies to modulate MAPT expression. [less ▲]

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See detailGaussian Phase Transitions and Conic Intrinsic Volumes: Steining the Steiner Formula
Goldstein, Larry; Nourdin, Ivan UL; Peccati, Giovanni UL

in Annals of Applied Probability (in press)

Intrinsic volumes of convex sets are natural geometric quantities that also play important roles in applications, such as linear inverse problems with convex constraints, and constrained statistical ... [more ▼]

Intrinsic volumes of convex sets are natural geometric quantities that also play important roles in applications, such as linear inverse problems with convex constraints, and constrained statistical inference. It is a well-known fact that, given a closed convex cone $C\subset \mathbb{R}^d$, its conic intrinsic volumes determine a probability measure on the finite set $\{0,1,...d\}$, customarily denoted by $\mathcal{L}(V_C)$. The aim of the present paper is to provide a Berry-Esseen bound for the normal approximation of ${\cal L}(V_C)$, implying a general quantitative central limit theorem (CLT) for sequences of (correctly normalised) discrete probability measures of the type $\mathcal{L}(V_{C_n})$, $n\geq 1$. This bound shows that, in the high-dimensional limit, most conic intrinsic volumes encountered in applications can be approximated by a suitable Gaussian distribution. Our approach is based on a variety of techniques, namely: (1) Steiner formulae for closed convex cones, (2) Stein's method and second order Poincar\'e inequality, (3) concentration estimates, and (4) Fourier analysis. Our results explicitly connect the sharp phase transitions, observed in many regularised linear inverse problems with convex constraints, with the asymptotic Gaussian fluctuations of the intrinsic volumes of the associated descent cones. In particular, our findings complete and further illuminate the recent breakthrough discoveries by Amelunxen, Lotz, McCoy and Tropp (2014) and McCoy and Tropp (2014) about the concentration of conic intrinsic volumes and its connection with threshold phenomena. As an additional outgrowth of our work we develop total variation bounds for normal approximations of the lengths of projections of Gaussian vectors on closed convex sets. [less ▲]

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See detailHi-POD solution of parametrized fluid dynamics problems: preliminary results
Baroli, Davide UL; Cova, Maria Cristina; Perotto, Simona et al

in MS&A series (in press), MS&A series

Numerical modeling of fluids in pipes or network of pipes (like in the circulatory system) has been recently faced with new methods that exploit the specific nature of the dynamics, so that a one ... [more ▼]

Numerical modeling of fluids in pipes or network of pipes (like in the circulatory system) has been recently faced with new methods that exploit the specific nature of the dynamics, so that a one dimensional axial mainstream is enriched by local secondary transverse components [4, 16, 18]. These methods - under the name of Hi-Mod approximation - construct a solution as a finite element axial discretization, completed by a spectral approximation of the transverse dynamics. It has been demonstrated that Hi-Mod reduction significantly accelerates the computations without com- promising the accuracy. In view of variational data assimilation procedures (or, more in general, control problems), it is crucial to have efficient model reduction techniques to rapidly solve, for instance, a parametrized problem for several choices of the parameters of interest. In this work, we present some preliminary results merging Hi-Mod techniques with a classical Proper Orthogonal Decomposition (POD) strategy. We name this new approach as Hi-POD model reduction. We demonstrate the efficiency and the reliability of Hi-POD on multiparameter advection-diffusion-reaction problems as well as on the incompressible Navier-Stokes equations, both in a steady and in an unsteady setting. [less ▲]

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See detailA multifactorial and integrative approach to impulsivity in neuropsychology: Insights from the UPPS model of impulsivity
Rochat, Lucien; Billieux, Joël UL; Gagnon, Jean et al

in Journal of Clinical and Experimental Neuropsychology (in press)

Risky and excessive behaviors, such as aggressive and compulsive behaviors, are frequently described in patients with brain damage and have dramatic psychosocial consequences. Although there is strong ... [more ▼]

Risky and excessive behaviors, such as aggressive and compulsive behaviors, are frequently described in patients with brain damage and have dramatic psychosocial consequences. Although there is strong evidence that impulsivity constitutes a key factor at play in these behaviors, the literature about impulsivity in neuropsychology is to date scarce. In addition, examining and understanding these problematic behaviors requires the assumption that impulsivity is a multidimensional construct. Consequently, this article aims at shedding light on frequent risky and excessive behaviors in patients with brain damage by focusing on a unified, comprehensive, and well-validated model, namely, the UPPS model of impulsivity (Whiteside & Lynam, 2001). This model considers impulsivity as a multidimensional construct that includes four facets: urgency, (lack of) premeditation, (lack of) perseverance, and sensation seeking. Furthermore, we discuss the psychological mechanisms underlying the dimensions of impulsivity, as well as the laboratory tasks designed to assess each mechanism and their neural bases. We then present a scale specifically designed to assess these four dimensions of impulsivity in patients with brain damage and examine the data regarding this multidimensional approach to impulsivity in neuropsychology. This review supports the need to adopt a multifactorial and integrative approach toward impulsive behaviors, and the model presented provides a valuable rationale to disentangle the nature of brain systems and mechanisms underlying impulsive behaviors in patients with brain damage. It may also foster further relevant research in the field of impulsivity and improve assessment and rehabilitation of impulsive behaviors in clinical settings. [less ▲]

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See detailSecurity Slicing for Auditing Common Injection Vulnerabilities
Thome, Julian UL; Shar, Lwin Khin UL; Bianculli, Domenico UL et al

in The Journal of Systems & Software (in press)

Cross-site scripting and injection vulnerabilities are among the most common and serious security issues for Web applications. Although existing static analysis approaches can detect potential ... [more ▼]

Cross-site scripting and injection vulnerabilities are among the most common and serious security issues for Web applications. Although existing static analysis approaches can detect potential vulnerabilities in source code, they generate many false warnings and source-sink traces with irrelevant information, making their adoption impractical for security auditing. One suitable approach to support security auditing is to compute a program slice for each sink, which contains all the information required for security auditing. However, such slices are likely to contain a large amount of information that is irrelevant to security, thus raising scalability issues for security audits. In this paper, we propose an approach to assist security auditors by defining and experimenting with pruning techniques to reduce original program slices to what we refer to as security slices, which contain sound and precise information. To evaluate the proposed approach, we compared our security slices to the slices generated by a state-of-the-art program slicing tool, based on a number of open-source benchmarks. On average, our security slices are 76% smaller than the original slices. More importantly, with security slicing, one needs to audit approximately 1% of the total code to fix all the vulnerabilities, thus suggesting significant reduction in auditing costs. [less ▲]

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See detailModel-Based Simulation of Legal Policies: Framework, Tool Support, and Validation
Soltana, Ghanem UL; Sannier, Nicolas UL; Sabetzadeh, Mehrdad UL et al

in Software & Systems Modeling (in press)

Simulation of legal policies is an important decision-support tool in domains such as taxation. The primary goal of legal policy simulation is predicting how changes in the law affect measures of interest ... [more ▼]

Simulation of legal policies is an important decision-support tool in domains such as taxation. The primary goal of legal policy simulation is predicting how changes in the law affect measures of interest, e.g., revenue. Legal policy simulation is currently implemented using a combination of spreadsheets and software code. Such a direct implementation poses a validation challenge. In particular, legal experts often lack the necessary software background to review complex spreadsheets and code. Consequently, these experts currently have no reliable means to check the correctness of simulations against the requirements envisaged by the law. A further challenge is that representative data for simulation may be unavailable, thus necessitating a data generator. A hard-coded generator is difficult to build and validate. We develop a framework for legal policy simulation that is aimed at addressing the challenges above. The framework uses models for specifying both legal policies and the probabilistic characteristics of the underlying population. We devise an automated algorithm for simulation data generation. We evaluate our framework through a case study on Luxembourg’s Tax Law. [less ▲]

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See detailAugmenting Field Data for Testing Systems Subject to Incremental Requirements Changes
Di Nardo, Daniel; Pastore, Fabrizio; Briand, Lionel UL

in ACM Transactions on Software Engineering & Methodology (in press)

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See detailLe Brexit et les accords mixtes de l'Union européenne
Neframi, Eleftheria UL

in Annuaire Français de Droit International (in press)

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See detailThe Worldwide Triumph of the Research University and Globalizing Science
Powell, Justin J W UL; Fernandez, Frank; Crist, John T. et al

in International Perspectives on Education & Society (in press), 33

This chapter provides an overview of the findings and chapters of volume 33 in the International Perspectives on Education and Society (IPES) series. It describes the common dataset and methods used by an ... [more ▼]

This chapter provides an overview of the findings and chapters of volume 33 in the International Perspectives on Education and Society (IPES) series. It describes the common dataset and methods used by an international research team. The chapter synthesizes the results of a series of country-level case studies and cross-national and regional comparisons on the growth of scientific research from 1900 until 2011. Additionally, the chapter provides a quantitative analysis of global trends in scientific, peer-reviewed publishing over the same period. The introduction identifies common themes that emerged across the case studies examined in-depth during the multi-year research project Science Productivity, Higher Education, Research Development and the Knowledge Society (SPHERE). First, universities have long been and increasingly are the primary organizations in science production around the globe. Second, the chapters describe in-country and cross-country patterns of competition and collaboration in scientific publications. Third, the chapters describe the national policy environments and institutionalized organizational forms that fostered scientific research. The introduction reviews selected findings and limitations of previous bibliometric studies and explains that the chapters in the volume overcome these limitations by applying neo-institutional theoretical frameworks to analyze bibliometric data over an extensive period. [less ▲]

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See detailStrong ties, personality, and legitimacy of entrepreneurs: the case of private physicians
Gundolf, Katherine; Cesinger, Beate; Geraudel, Mickaël UL et al

in International Journal of Entrepreneurial Venturing (in press)

Legitimacy is crucial for entrepreneurs. It is the cornerstone for creating relationships with stakeholders and mitigating resource constraints. But, other-referent legitimacy is also related to the ... [more ▼]

Legitimacy is crucial for entrepreneurs. It is the cornerstone for creating relationships with stakeholders and mitigating resource constraints. But, other-referent legitimacy is also related to the cognitive image of individual legitimacy. Drawing on the identity-based model of legitimacy, we argue that personality traits (big five) and social capital (strong ties) of entrepreneurs impact self-perceived legitimacy of entrepreneurs. Based on survey data of 98 German private physicians, this paper examines antecedents of self-perceived legitimacy towards two main stakeholders: patients and peers. We find that high levels of agreeableness stimulate self-perceived legitimacy towards patients and peers, whereas openness to experience solely influences physicians’ self-perceived legitimacy towards patients. In addition, our results highlight the contingent effect of personality traits by underlining the role of strong ties as moderator of the relationship between personality traits and the self-perceived legitimacy. By identifying these configurations we contribute to the literature on entrepreneurship with a refined perspective of antecedents of self-perceived legitimacy. Moreover, we give recommendations on how private physicians can benefit from two personality traits – agreeableness and openness to experience – and how they can manage weak and strong ties in order to diffuse their reputation. [less ▲]

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See detailOn the eigenvariety of Hilbert modular forms at classical parallel weight one points with dihedral projective image
Deo, Shaunak UL

in Transactions of the American Mathematical Society (in press)

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See detailGuaranteed error bounds in homogenisation: an optimum stochastic approach to preserve the numerical separation of scales
Paladim, Daniel-Alves; de Almeida, José Paulo Baptista; Bordas, Stéphane UL et al

in International Journal for Numerical Methods in Engineering (in press)

This paper proposes a new methodology to guarantee the accuracy of the homogenisation schemes that are traditionally employed to approximate the solution of PDEs with random, fast evolving diffusion ... [more ▼]

This paper proposes a new methodology to guarantee the accuracy of the homogenisation schemes that are traditionally employed to approximate the solution of PDEs with random, fast evolving diffusion coefficients. We typically consider linear elliptic diffusion problems in randomly packed particulate composites. Our work extends the pioneering work presented in [26,32] in order to bound the error in the expectation and second moment of quantities of interest, without ever solving the fine-scale, intractable stochastic problem. The most attractive feature of our approach is that the error bounds are computed without any integration of the fine-scale features. Our computations are purely macroscopic, deterministic, and remain tractable even for small scale ratios. The second contribution of the paper is an alternative derivation of modelling error bounds through the Prager-Synge hypercircle theorem. We show that this approach allows us to fully characterise and optimally tighten the interval in which predicted quantities of interest are guaranteed to lie. We interpret our optimum result as an extension of Reuss-Voigt approaches, which are classically used to estimate the homogenised diffusion coefficients of composites, to the estimation of macroscopic engineering quantities of interest. Finally, we make use of these derivations to obtain an efficient procedure for multiscale model verification and adaptation. [less ▲]

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See detailInterindividual differences in responses to global inequality
Reese, Gerhard UL; Proch, Jutta; Cohrs, J. Christopher

in Analyses of Social Issues and Public Policy (in press)

One of humanity’s most pressing problems is the inequality between people from “developed” and “developing” countries, which counteracts joint efforts to combat other large scale problems. Little is known ... [more ▼]

One of humanity’s most pressing problems is the inequality between people from “developed” and “developing” countries, which counteracts joint efforts to combat other large scale problems. Little is known about the psychological antecedents that affect the perception of and behavioral responses to global inequality. Based on, and extending, Duckitt’s (2001) dual-process model, the current research examines psychological antecedents that may explain how people in an industrialized Western country respond to global inequality. In two studies (N1 = 116, N2 = 117), we analyzed the relationship between the Big Five and justice constructs, right-wing authoritarianism (RWA), social dominance orientation (SDO), and behavioral intentions to reduce global inequality. Two-group path analysis revealed support for the dual-process model in that RWA and SDO were important predictors of behavioral intentions and partially acted as mediators between personality and such intentions. Moreover, justice sensitivity explained variance beyond the “classic” DPM variables. In Study 2, we additionally assessed individuals’ global social identification and perceived injustice of global inequality that explained additional variance. Extending previous work on the dual-process model, these findings demonstrate that individual and group-based processes predict people’s responses to global inequality and uncover potentials to promote behavior in the interest of global justice. [less ▲]

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See detailAbsence of regulator of G-protein signaling 4 does not protect against dopamine neuron dysfunction and injury in the mouse 6-hydroxydopamine lesion model of Parkinson's disease
Ashrafi, Amer UL; Garcia, Pierre UL; Kollmus, Heike et al

in Neurobiology of Aging (in press)

Regulator of G-Protein Signaling 4 (RGS4), a member of the RGS family of proteins that inactivate G-proteins, has gained interest as a potential drug target for neurological disorders, such as epilepsy ... [more ▼]

Regulator of G-Protein Signaling 4 (RGS4), a member of the RGS family of proteins that inactivate G-proteins, has gained interest as a potential drug target for neurological disorders, such as epilepsy and Parkinson’s disease (PD). In the case of PD, the main current option for alleviating motor symptoms are dopamine replacement therapies, which have limitations because of side effects, and reduced effectiveness over the long term. Research on new non-dopaminergic PD drug targets has indicated that inhibition of RGS4 could be an effective adjuvant treatment option. The effectiveness of RGS4 inhibition for an array of PD-linked functional and structural neuroprotection endpoints has not yet been demonstrated. Here, we use the 6-Hydroxydopamine (6-OHDA) lesioning model of the nigrostriatal pathway in mice to address this question. We observe, using a battery of behavioral and pathological measures, that mice deficient for RGS4 are not protected from 6-OHDA induced injury, and show enhanced susceptibility in some measures of motor function. Our results suggest that inhibition of RGS4 as a non-dopaminergic target for PD should be approached with caution. [less ▲]

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See detailDiversifizierung von Kindertagesbetreuungsangeboten durch mixed economy of care: Eine vergleichende Perspektive aus Luxemburg und Deutschland.
Schmitz, Anett UL; Wiltzius, Martine UL; Mierendorff, Johanna

in Zeitschrift für Soziologie der Erziehung und Sozialisation = Journal for Sociology of Education and Socialization (in press)

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See detailCharacterizations of idempotent discrete uninorms
Couceiro, Miguel; Devillet, Jimmy UL; Marichal, Jean-Luc UL

in Fuzzy Sets & Systems (in press)

In this paper we provide an axiomatic characterization of the idempotent discrete uninorms by means of three conditions only: conservativeness, symmetry, and nondecreasing monotonicity. We also provide an ... [more ▼]

In this paper we provide an axiomatic characterization of the idempotent discrete uninorms by means of three conditions only: conservativeness, symmetry, and nondecreasing monotonicity. We also provide an alternative characterization involving the bisymmetry property. Finally, we provide a graphical characterization of these operations in terms of their contour plots, and we mention a few open questions for further research. [less ▲]

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See detailCharacterization of n-associative, monotone, idempotent functions on an interval which have neutral elements
Kiss, Gergely UL; Somlai, Gabor

in Semigroup Forum (in press)

We investigate monotone idempotent n-ary semigroups. One of the main results of this article is the generalization of Czogala-Drewniak Theorem, which describes the idempotent monotone associative ... [more ▼]

We investigate monotone idempotent n-ary semigroups. One of the main results of this article is the generalization of Czogala-Drewniak Theorem, which describes the idempotent monotone associative functions having neutral elements. Furthermore we present the full characterization of idempotent, monotone, n-associative functions on an interval which have neutral elements. Our description provides that monotone, idempotent, n-ary semigroups are quasitrivial. [less ▲]

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See detailHow does research evaluation impact educational research? Exploring intended and unintended consequences of research assessment in the United Kingdom, 1986–2014
Marques, Marcelo UL; Powell, Justin J W UL; Zapp, Mike UL et al

in European Educational Research Journal (in press)

Research evaluation systems in many countries aim to improve the quality of higher education. Among the first such systems, the UK's Research Assessment Exercise (RAE) from 1986 is now the Research ... [more ▼]

Research evaluation systems in many countries aim to improve the quality of higher education. Among the first such systems, the UK's Research Assessment Exercise (RAE) from 1986 is now the Research Excellence Framework (REF). Highly-institutionalized, it holds research(ers) accountable. While studies describe the effects at different levels, this longitudinal analysis examines the gradual institutionalization and (un)intended consequences from 1986 to 2014. First, we analyze historically RAE/REF's rational, formalization, standardization, and transparency, framing it as a strong research evaluation system. Second, we locate the multidisciplinary field of education, analyzing submission behavior (staff, outputs, funding) of Departments of Education over time. We find: decreases in submitted staff; the research article as preferred publication format; the rise of quantitative analysis; and high and stable concentration of funding among few Departments. Policy instruments invoke varied responses, wit such reactivity shown by the increasing selectivity of submitted staff as a form of reverse engineering and the research article as the preferred output as a self-fulfilling prophecy. The funding concentration manifests an intended consequence, facilitating greater disparities between Departments of Education. These findings emphasize how research assessment impacts the structural organization and cognitive development of educational research in the UK. [less ▲]

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See detail'Rationale Trennung' or 'Marriage d'Amour'? History and Philosophy of Educational Research
Priem, Karin UL; Fendler, Lynn

in Espacio, Tiempo y Educacion (in press)

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See detail(Re)shaping Educational Research through ‘Programification’: Institutional Expansion, Change, and Translation in Norway
Zapp, Mike UL; Helgetun, Jo B.; Powell, Justin J W UL

in European Journal of Education (in press), 52

Educational research in Norway has experienced unprecedented structural expansion as well as cognitive shifts over the past two decades, especially due to increased state investments and the strategic use ... [more ▼]

Educational research in Norway has experienced unprecedented structural expansion as well as cognitive shifts over the past two decades, especially due to increased state investments and the strategic use of extensive and multi-year thematic programs to fund research projects. Applying a neo-institutionalist framework, we examine institutionalization dynamics in cultural-cognitive, normative, and regulative dimensions over the past two decades using interviews, research program calls, policy documents, and funding data. In the cultural-cognitive dimension, we find references to the knowledge society, the importance of evidence in policy-making, and ideas of quality, excellence, and relevance. In the normative dimension, we find the introduction of new professional and methodological standards, reflecting broader global patterns of academic and epistemic drift. In the regulative dimension, the strengthened role of both government and the Research Council of Norway is manifest in substantial growth in both funding and large-scale, long-term planning, including thematic choices—evidence of ‘programification’. The importance of external models has grown in an era of internationalization, yet translation occurs at every level of governance of educational research. This results in a specific Norwegian research model, guided by a mode of governance of programs, that maintains social values traditionally strong in Nordic societies. [less ▲]

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See detailMetformin reverses TRAP1 mutation-associated alterations in mitochondrial function in Parkinson's disease
Fitzgerald, Julia C.; Zimprich, Alexander; Carvajal-Berrio, Daniel A. et al

in Brain : A Journal of Neurology (in press)

The mitochondrial proteins TRAP1 and HtrA2 have previously been shown to be phosphorylated in the presence of the Parkinson’s disease kinase PINK1 but the downstream signaling is unclear. HtrA2 and PINK1 ... [more ▼]

The mitochondrial proteins TRAP1 and HtrA2 have previously been shown to be phosphorylated in the presence of the Parkinson’s disease kinase PINK1 but the downstream signaling is unclear. HtrA2 and PINK1 loss of function causes parkinsonism in humans and animals. Here, we identified TRAP1 as an interactor of HtrA2 using an unbiased mass spectrometry approach. In our human cell models, TRAP1 overexpression is protective, rescuing HtrA2 and PINK1-associated mitochondrial dysfunction and suggesting that TRAP1 acts downstream of HtrA2 and PINK1. HtrA2 regulates TRAP1 protein levels, but TRAP1 is not a direct target of HtrA2 protease activity. Following genetic screening of Parkinson’s disease patients and healthy controls, we also report the first TRAP1 mutation leading to complete loss of functional protein in a patient with late onset Parkinson’s disease. Analysis of fibroblasts derived from the patient reveal that oxygen consumption, ATP output and reactive oxygen species are increased compared to healthy individuals. This is coupled with an increased pool of free NADH, increased mitochondrial biogenesis, triggering of the mitochondrial unfolded protein response, loss of mitochondrial membrane potential and sensitivity to mitochondrial removal and apoptosis. These data highlight the role of TRAP1 in the regulation of energy metabolism and mitochondrial quality control. Interestingly, the diabetes drug metformin reverses mutation-associated alterations on energy metabolism, mitochondrial biogenesis and restores mitochondrial membrane potential. In summary, our data show that TRAP1 acts downstream of PINK1 and HtrA2 for mitochondrial fine tuning, whereas TRAP1 loss of function leads to reduced control of energy metabolism, ultimately impacting mitochondrial membrane potential. These findings offer new insight into mitochondrial pathologies in Parkinson’s disease and provide new prospects for targeted therapies. [less ▲]

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See detailConfiguring use case models in product families
Hajri, Ines UL; Göknil, Arda UL; Briand, Lionel UL et al

in Software & Systems Modeling (in press)

In many domains such as automotive and avionics, the size and complexity of software systems is quickly increasing. At the same time, many stakeholders tend to be involved in the development of such ... [more ▼]

In many domains such as automotive and avionics, the size and complexity of software systems is quickly increasing. At the same time, many stakeholders tend to be involved in the development of such systems, which typically must also be configured for multiple customers with varying needs. Product Line Engineering (PLE) is therefore an inevitable practice for such systems. Furthermore, because in many areas requirements must be explicit and traceability to them is required by standards, use cases and domain models are common practice for requirements elicitation and analysis. In this paper, based on the above observations, we aim at supporting PLE in the context of use case-centric development. Therefore, we propose, apply, and assess a use case-driven configuration approach which interactively receives configuration decisions from the analysts to generate Product Specific (PS) use case and domain models. Our approach provides the following: (1) a use case-centric product line modeling method (PUM), (2) automated, interactive configuration support based on PUM, and (3) an automatic generation of PS use case and domain models from Product Line (PL) models and configuration decisions. The approach is supported by a tool relying on Natural Language Processing (NLP), and integrated with an industrial requirements management tool, i.e., IBM Doors. We successfully applied and evaluated our approach to an industrial case study in the automotive domain, thus showing evidence that the approach is practical and beneficial to capture variability at the appropriate level of granularity and to configure PS use case and domain models in industrial settings. [less ▲]

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See detailAutomated Test Case Generation as a Many-Objective Optimisation Problem with Dynamic Selection of the Targets
Panichella, Annibale UL; Kifetew, Fitsum; Tonella, Paolo

in IEEE Transactions on Software Engineering (in press)

The test case generation is intrinsically a multi-objective problem, since the goal is covering multiple test targets (e.g., branches). Existing search-based approaches either consider one target at a ... [more ▼]

The test case generation is intrinsically a multi-objective problem, since the goal is covering multiple test targets (e.g., branches). Existing search-based approaches either consider one target at a time or aggregate all targets into a single fitness function (whole-suite approach). Multi and many-objective optimisation algorithms (MOAs) have never been applied to this problem, because existing algorithms do not scale to the number of coverage objectives that are typically found in real-world software. In addition, the final goal for MOAs is to find alternative trade-off solutions in the objective space, while in test generation the interesting solutions are only those test cases covering one or more uncovered targets. In this paper, we present DynaMOSA (Dynamic Many-Objective Sorting Algorithm), a novel many-objective solver specifically designed to address the test case generation problem in the context of coverage testing. DynaMOSA extends our previous many-objective technique MOSA (Many-Objective Sorting Algorithm) with dynamic selection of the coverage targets based on the control dependency hierarchy. Such extension makes the approach more effective and efficient in case of limited search budget. We carried out an empirical study on 346 Java classes using three coverage criteria (i.e., statement, branch, and strong mutation coverage) to assess the performance of DynaMOSA with respect to the whole-suite approach (WS), its archive-based variant (WSA) and MOSA. The results show that DynaMOSA outperforms WSA in 28% of the classes for branch coverage (+8% more coverage on average) and in 27% of the classes for mutation coverage (+11% more killed mutants on average). It outperforms WS in 51% of the classes for statement coverage, leading to +11% more coverage on average. Moreover, DynaMOSA outperforms its predecessor MOSA for all the three coverage criteria in 19% of the classes with +8% more code coverage on average. [less ▲]

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See detailStandards for duty of care? Debating intermediary liability from a sectoral perspective
Ullrich, Carsten UL

in Journal of Intellectual Property, Information Technology and Electronic Commerce Law (in press), 8(2),

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See detailSpatial discretization error in Kalman filtering for discrete-time infinite dimensional systems
Aalto, Atte UL

in IMA Journal of Mathematical Control and Information (in press)

We derive a reduced-order state estimator for discrete-time infinite dimensional linear systems with finite dimensional Gaussian input and output noise. This state estimator is the optimal one-step ... [more ▼]

We derive a reduced-order state estimator for discrete-time infinite dimensional linear systems with finite dimensional Gaussian input and output noise. This state estimator is the optimal one-step estimate that takes values in a fixed finite dimensional subspace of the system’s state space — consider, for example, a Finite Element space. The structure of the obtained state estimator is like the Kalman filter, but with an additional optimal embedding operator mapping from the reduced space to the original state space. We derive a Riccati difference equation for the error covariance and use sensitivity analysis to obtain a bound for the error of the state estimate due to the state space discretization. [less ▲]

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See detailWhat we know about testing embedded software
Garousi, Vahid UL; Felderer, Michael; Karapıçak, Çağrı Murat et al

in IEEE Software (in press)

To cost-effectively test embedded software, practitioners and researchers have proposed many test techniques, approaches, tools, and frameworks. However, obtaining an overview of the state of the art and ... [more ▼]

To cost-effectively test embedded software, practitioners and researchers have proposed many test techniques, approaches, tools, and frameworks. However, obtaining an overview of the state of the art and state of the practice in this area is challenging for practitioners or new researchers. In addition, owing to an inadequate overview of what already exists in this area, some companies often reinvent the wheel by designing a test approach that’s new to them but already exists. To address these problems, the authors conducted a systematic literature review of this area that covered the testing topics, testing activities, test artifacts, and industries on which the studies focused. The results can benefit both practitioners and researchers by serving as an index to the vast body of knowledge in this important, fast-growing area. [less ▲]

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See detailA Meta-Analysis of Viewing Time Measures of Sexual Interest in Children
Schmidt, Alexander F. UL; Babchishin, Kelly M.; Lehmann, Robert J. B.

in Archives of Sexual Behavior (in press)

Due to unobtrusiveness and ease of implementation, viewing time (VT) measures of sexual interest in children have sparked increasing research interest in forensic contexts over the last two decades. The ... [more ▼]

Due to unobtrusiveness and ease of implementation, viewing time (VT) measures of sexual interest in children have sparked increasing research interest in forensic contexts over the last two decades. The current study presents two meta-analyses of VT measures adapted to assess pedophilic interest to determine their discrimination between sexual offenders against children (SOC) and non-SOC groups as well as convergent validity (associations with other measures of sexual interest in children). On average, VT measures showed moderate discrimination between criterion groups (fixed-effect d = 0.60, 95% CI [0.51, 0.68], N = 2,705, k = 14) and significant convergent validity with self-reports, penile plethysmography, Implicit Association Tests and offence behavioral measures ranging from r =.18 to r = .38. VT measures, however, provided better discrimination for adults (fixed-effect d = 0.78, 95% CI [0.64, 0.92]) than adolescent samples (fixed-effect d = 0.50, 95% CI [0.40, 0.61]), Qbetween = 9.37, p = .002. Moreover, using pedophilic difference scores within adult samples substantially increased VT measures’ validity (fixed-effect d = 1.03, 95% CI [0.82, 1.25], N = 414, k = 7). Results are discussed in terms of their theoretical and applied implications for forensic contexts. [less ▲]

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See detailArts vs Engineering: Choosing Consumption of and Investment in Education
Tampieri, Alessandro UL; Romano, Richard

in Research in Economics (in press)

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See detailHow can we conceptualize behavioural addiction without pathologizing common behaviours?
Kardefelt-Winther, Daniel; Heeren, Alexandre; Schimmenti, Adriano et al

in Addiction (in press)

Following the recent changes to the diagnostic category for addictive disorders in DSM-5, it is urgent to clarify what constitutes behavioural addiction to have a clear direction for future research and ... [more ▼]

Following the recent changes to the diagnostic category for addictive disorders in DSM-5, it is urgent to clarify what constitutes behavioural addiction to have a clear direction for future research and classification. However, in the years following the release of DSM-5, an expanding body of research has increasingly classified engagement in a wide range of common behaviours and leisure activities as possible behavioural addiction. If this expansion does not end, both the relevance and the credibility of the field of addictive disorders might be questioned, which may prompt a dismissive appraisal of the new DSM-5 subcategory for behavioural addiction. We propose an operational definition of behavioural addiction together with a number of exclusion criteria, to avoid pathologizing common behaviours and provide a common ground for further research. The definition and its exclusion criteria are clarified and justified by illustrating how these address a number of theoretical and methodological shortcomings that result from existing conceptualizations. We invite other researchers to extend our definition under an Open Science Foundation framework. [less ▲]

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See detailProduktinnovation in Start-ups: Die Rolle der Gründungsmotivationen von Unternehmern
Gast, Johanna; Gundolf, Katherine; Geraudel, Mickaël UL

in ZfKE : Zeitschrift für KMU und Entrepreneurship (in press)

Da Unternehmertum und Innovationen stark miteinander verknüpft sind, wird in dieser Studie der Zusammenhang zwischen ursprünglichen Gründungsmotivationen von Unternehmern und deren tatsächlichen ... [more ▼]

Da Unternehmertum und Innovationen stark miteinander verknüpft sind, wird in dieser Studie der Zusammenhang zwischen ursprünglichen Gründungsmotivationen von Unternehmern und deren tatsächlichen Produktinnovationen innerhalb der ersten Gründungsjahre untersucht. Basierend auf einer Stichprobe der französischen SINE Datenbank, welche von dem französischen Nationalen Institut für Statistik und Wirtschaftsplanung zur Verfügung gestellt wurde, wird gezeigt, dass verschiedene Gründungsmotivationen das Produktinnovationsverhalten von Start-ups positiv beeinflussen und dass Gründungsmotivationen damit auch nach der Gründung noch Nachfolgen haben können. So zeigen die Ergebnisse, dass Gründungsmotivationen wie unternehmerisches Denken und Handeln, Verbessern der finanziellen Position, Nutzen einer Geschäftschance oder –Idee und Arbeitslosigkeit einen signifikant positiven Effekt auf Produktinnovation im frisch gegründeten Unternehmen ausüben. [less ▲]

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See detailEnlarging the frame: Issues of inclusion and mental health in an ageing society
Ferring, Dieter UL; Murdock, Elke UL

in Journal of Mental Health Research in Intellectual Disabilities (in press)

This contribution frames the notions of inclusion and mental health by describing trends in European societies at the social and economic level that will have direct consequences for a participative civil ... [more ▼]

This contribution frames the notions of inclusion and mental health by describing trends in European societies at the social and economic level that will have direct consequences for a participative civil society and social cohesion. Starting point is the observation that the world faces challenges at the start of the 21st century that are new and unprecedented in its history. The four global forces that break all the trends known so far in human history include urbanization, accelerating technological development, greater global connections, and population ageing. The authors first describe the scale of population ageing, as ageing populations characterize several developed economies. In a second step, they highlight some consequences of population ageing for social welfare and in a third part they elaborate on the notion of justice and inclusion in rapidly changing societies. [less ▲]

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See detailA remark on Schröder's equation: Formal and analytic linearization of iterative roots of the power series f(z)=z
Reich, Ludwig; Tomaschek, Jörg UL

in Monatshefte für Mathematik (in press)

We study Schröder’s equation (i.e. the problem of linearization) for local analytic functions F with F (0)=0, F(0)=1, F(0) a root of 1. While Schröder’s equation in this case need not have even a formal ... [more ▼]

We study Schröder’s equation (i.e. the problem of linearization) for local analytic functions F with F (0)=0, F(0)=1, F(0) a root of 1. While Schröder’s equation in this case need not have even a formal solution, we show that if F is formally linearizable, then it can also be linearized by an invertible local analytic transformation. On the other hand, there exist also divergent series solutions of Schröder’s equation in this situation. We give some applications of our results to iterative functional equations, functional-differential equations and iteration groups. [less ▲]

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See detailBoundlessly Entangled: Travels and Performances of School Hygiene in the Context of Open-Air Education (c. 1904-1936)
Thyssen, Geert UL

in Canadian Bulletin of Medical History (in press)

This article develops a histoire croisée of health education using the example of open-air schools. It reflexively analyses the entangled performances of knowledge and praxis around hygiene in the context ... [more ▼]

This article develops a histoire croisée of health education using the example of open-air schools. It reflexively analyses the entangled performances of knowledge and praxis around hygiene in the context of “international” open-air school conferences and in relation to “materials” of open-air education. Such performances reveal open-air schools as “practice and movement” unbound by “national” or otherwise imagined borders. Fragmentation accompanied their circulation and ensued from non/humans’ active, co-constitutive role in the mediation of knowledge and praxis. While underexplored, material and economic factors were key to this process. Their analysis enriches the study of the “internationalization” of school hygiene. [less ▲]

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See detailA Generic Approach for Solving Nonlinear-Discrete Security-Constrained Optimal Power Flow Problems in Large-Scale Systems
Platbrood, Ludovic; Capitanescu, Florin UL; Merckx, Christian et al

in IEEE Transactions on Power Systems (in press)

This paper proves the practicality of an iterative algorithm for solving realistic large-scale SCOPF problems. This algorithm is based on the combination of a contingency filtering scheme, used to ... [more ▼]

This paper proves the practicality of an iterative algorithm for solving realistic large-scale SCOPF problems. This algorithm is based on the combination of a contingency filtering scheme, used to identify the binding contingencies at the optimum, and a network compression method, used to reduce the complexity of the post-contingency models included in the SCOPF formulation. We show that by combining these two complementary ideas, it is possible to solve in a reasonable time SCOPF problems on large power system models with a large number of contingencies. Unlike most results reported for large-scale SCOPF problems, our algorithm uses a non-linear AC network model in both pre-contingency and post-contingency states, optimizes both active/reactive powers flows jointly, and treats the discrete variables. The proposed algorithm is implemented with state-of-the-art solvers and applied to two systems: a national grid with 2563 buses and 1297 contingencies, and a model of the European transmission network with 9241 buses and 12000 contingencies. [less ▲]

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See detailEngineered Communities: Industry-Related Open-Air Schools Forging Common Identities and Forms of Citizenship? (c. 1913-1963)
Thyssen, Geert UL

in History of Education & children's Literature (in press)

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See detailOn-line model-based fault detection and isolation for PEM fuel cell stack systems
Rosich, Albert UL; Sarrate, Ramon; Nejjari, Fatiha

in Applied Mathematical Modelling (in press)

Efficient and reliable operation of Polymer Electrolyte Membrane (PEM) fuel cells are key requirements for their successful commercialization and application. The use of diagnostic techniques enables the ... [more ▼]

Efficient and reliable operation of Polymer Electrolyte Membrane (PEM) fuel cells are key requirements for their successful commercialization and application. The use of diagnostic techniques enables the achievement of these requirements. This paper focuses on model-based fault detection and isolation (FDI) for PEM fuel cell stack systems. The work consists in designing and selecting a subset of consistency relations such that a set of predefined faults can be detected and isolated. Despite a nonlinear model of the PEM fuel cell stack system will be used, consistency relations that are easily implemented by a variable back substitution method will be selected. The paper also shows the significance of structural models to solve diagnosis issues in complex systems. [less ▲]

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See detailCorrector in random homogenization of elliptic equations in presence of long-range media
Lechiheb, Atef; Nourdin, Ivan UL; Zheng, Guangqu UL et al

in Probability and Mathematical Statistics (in press)

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See detailA Stein deficit for the logarithmic Sobolev inequality
Ledoux, Michel; Nourdin, Ivan UL; Peccati, Giovanni UL

in Science China Mathematics (in press)

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See detailLabour, Gender and Ethnicities in the 'Heart of Manila'
Espinosa, Shirlita Africa UL

in Journal of Sociology (in press)

Manila, like most cities in the developing world, is experiencing the effects of the flexibility of global capital and the consequences of being excluded from the flows of knowledge and finance. Quaipo ... [more ▼]

Manila, like most cities in the developing world, is experiencing the effects of the flexibility of global capital and the consequences of being excluded from the flows of knowledge and finance. Quaipo, the 'heart of Manila', has responded to and negotiates with macroeconomic challenges through the underground economy of media piracy. Given the increase in population, unemployment and the general degradation of urban living amongst the poor, the economy of piracy has become a conduit of socio-economic changes that intersect with the culture-specific economy of worship. Quiapo is a fascinating terrain of Manilenos social history; it is the site of class tension, religious and ethnic divide, state intervention, and urban culture. Today, piracy and worship are forces by which the district's inhabitants and pilgrims define their lives and their labour. This essay examines how piracy and worship impact on the labour, space and gender dynamics of Quiapo. [less ▲]

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See detailThe Case for Context-Driven Software Engineering Research
Briand, Lionel UL; Bianculli, Domenico UL; Nejati, Shiva UL et al

in IEEE Software (in press)

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See detailA minimal realization technique for the dynamical structure function of a class of LTI systems
Goncalves, Jorge UL; Yuan, Ye; Rai, Anurag et al

in IEEE Transactions on Control of Network Systems (in press)

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See detailStudents' immigration background as a moderator of predictive validity of tracking decisions.
Klapproth, Florian UL; Schaltz, Paule UL

in Procedia Social and Behavioral Sciences (in press)

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See detailSparse Network Identifiability via Compressed Sensing
Goncalves, Jorge UL; Hayden, David; Chang, Young et al

in Automatica (in press)

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See detailApplications of convex analysis within mathematics
Aragón Artacho, Francisco Javier UL; Borwein, J. M.; Martín-Márquez, V. et al

in Mathematical Programming (in press)

In this paper, we study convex analysis and its theoretical applications. We first apply important tools of convex analysis to Optimization and to Analysis. We then show various deep applications of ... [more ▼]

In this paper, we study convex analysis and its theoretical applications. We first apply important tools of convex analysis to Optimization and to Analysis. We then show various deep applications of convex analysis and especially infimal convolution in Monotone Operator Theory. Among other things, we recapture the Minty surjectivity theorem in Hilbert space, and present a new proof of the sum theorem in reflexive spaces. More technically, we also discuss autoconjugate representers for maximally monotone operators. Finally, we consider various other applications in mathematical analysis. [less ▲]

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See detailRecent Results on Douglas–Rachford Methods for Combinatorial Optimization Problems
Aragón Artacho, Francisco Javier UL; Borwein, J. M.; Tam, M. K.

in Journal of Optimization Theory & Applications (in press)

We discuss recent positive experiences applying convex feasibility algorithms of Douglas-Rachford type to highly combinatorial and far from convex problems.

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See detailSmoking related warning messages formulated as questions positively influence short-term smoking behaviour
Müller, Barbara; Ritter, Simone; Glock, Sabine UL et al

in Journal of Health Psychology (in press)

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See detailConcentration bounds for geometric Poisson functionals: logarithmic Sobolev inequalities revisited
Peccati, Giovanni UL; Bachmann, Sascha

in Electronic Journal of Probability (in press)

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See detailNetwork Identifiability from Intrinsic Noise
Goncalves, Jorge UL; Hayden, David; Yuan, Ye

in IEEE Transactions on Automatic Control (in press)

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See detailGrowth intention and sales revenues growth in small business: The mediating effect of firm size growth
Cesinger, Beate; Gundolf, Katherine; Geraudel, Mickaël UL

in International Journal of Technology Management (in press)

While the direct influence of growth intention on small business growth has been examined in entrepreneurship literature, little research distinguishes the different forms of growth and how they are ... [more ▼]

While the direct influence of growth intention on small business growth has been examined in entrepreneurship literature, little research distinguishes the different forms of growth and how they are interrelated. This article draws upon growth intention to examine whether firm size growth is the channel through which growth intention influences sales revenue growth. Results from the analysis of a dataset of 20,472 French new ventures reveal that: (1) growth intention has a positive impact on sales revenue growth; (2) firm size growth has a positive impact on sales revenue growth; and (3) firm size growth mediates the effect of growth intention on sales revenue growth. These findings show that firm size growth is a means to achieve sales revenue growth and not only a finality per se. [less ▲]

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See detailReligious Affiliation and Attitudes Towards Gay Men: On the Mediating Role of Masculinity Threat
Reese, Gerhard UL; Steffens, Melanie C.; Jonas, Kai J.

in Journal of Community & Applied Social Psychology (in press)

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See detailNitsche’s method for two and three dimensional NURBS patch coupling
Nguyen, Vinh-Phu; Kerfriden, Pierre; Brino, Marco et al

in Computational Mechanics (in press)

We present a Nitche’s method to couple non-conforming two and three-dimensional NURBS (Non Uniform Rational B-splines) patches in the context of isogeometric analysis (IGA). We present results for linear ... [more ▼]

We present a Nitche’s method to couple non-conforming two and three-dimensional NURBS (Non Uniform Rational B-splines) patches in the context of isogeometric analysis (IGA). We present results for linear elastostatics in two and and three-dimensions. The method can deal with surface-surface or volume-volume coupling, and we show how it can be used to handle heterogeneities such as inclusions. We also present preliminary results on modal analysis. This simple coupling method has the potential to increase the applicability of NURBS-based isogeometric analysis for practical applications. [less ▲]

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See detailAnalysis of composite plates through cell-based smoothed finite element and 4-noded mixed interpolation of tensorial components techniques
Rodrigues, JD; Natarajan, S; Ferreira, AJM et al

in Computers & Structures (in press)

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See detailThe Governance of Post-Secondary Education Systems in British Columbia and Ontario: Path Dependence and Provincial Policy
Harmsen, Robert UL; Tupper, Allan

in Canadian Public Administration (in press)

Provincial governments retain an essentially unrestricted jurisdictional autonomy as regards the structuring and coordination of post-secondary education (PSE) systems. It is at the provincial level that ... [more ▼]

Provincial governments retain an essentially unrestricted jurisdictional autonomy as regards the structuring and coordination of post-secondary education (PSE) systems. It is at the provincial level that crucial balances must be struck between the competing demands placed on costly PSE systems. This article develops a comparative historical analysis of the British Columbia and Ontario cases in this relatively neglected area of provincial public management. Strong path-dependent logics are identified in both cases, anchored in interconnected networks of institutional and local interests. Current developments in both provinces are assessed against the background of these longer-term historical patterns and in relation to wider international trends. [less ▲]

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See detailNetwork proximity in the geography of research collaboration
Berge, Laurent UL

in Papers in Regional Science (in press)

This paper deals with the questions of how network proximity influences the structure of inter-regional collaborations and how it interacts with geography. I first introduce a new, theoretically grounded ... [more ▼]

This paper deals with the questions of how network proximity influences the structure of inter-regional collaborations and how it interacts with geography. I first introduce a new, theoretically grounded measure of inter-regional network proximity. Then, I use data on European scientific co-publications in the field of chemistry between 2001 and 2005 to assess those questions. The main findings reveal that inter-regional network proximity is important in determining future collaborations but its effect is mediated by geography. Most importantly, a clear substitution pattern is revealed showing that network proximity mainly benefits international collaborations. [less ▲]

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See detailAutomated Extraction and Clustering of Requirements Glossary Terms
Arora, Chetan UL; Sabetzadeh, Mehrdad UL; Briand, Lionel UL et al

in IEEE Transactions on Software Engineering (in press)

A glossary is an important part of any software requirements document. By making explicit the technical terms in a domain and providing definitions for them, a glossary helps mitigate imprecision and ... [more ▼]

A glossary is an important part of any software requirements document. By making explicit the technical terms in a domain and providing definitions for them, a glossary helps mitigate imprecision and ambiguity. A key step in building a glossary is to decide upon the terms to include in the glossary and to find any related terms. Doing so manually is laborious, particularly for large requirements documents. In this article, we develop an automated approach for extracting candidate glossary terms and their related terms from natural language requirements documents. Our approach differs from existing work on term extraction mainly in that it clusters the extracted terms by relevance, instead of providing a flat list of terms. We provide an automated, mathematically-based procedure for selecting the number of clusters. This procedure makes the underlying clustering algorithm transparent to users, thus alleviating the need for any user-specified parameters. To evaluate our approach, we report on three industrial case studies, as part of which we also examine the perceptions of the involved subject matter experts about the usefulness of our approach. Our evaluation notably suggests that: (1) Over requirements documents, our approach is more accurate than major generic term extraction tools. Specifically, in our case studies, our approach leads to gains of 20% or more in terms of recall when compared to existing tools, while at the same time either improving precision or leaving it virtually unchanged. And, (2) the experts involved in our case studies find the clusters generated by our approach useful as an aid for glossary construction. [less ▲]

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See detailGUT MICROBIOTA FUNCTIONS - METABOLISM OF NUTRIENTS AND OTHER FOOD COMPONENTS
Rowland, I; Gibson, G; Heinken, Almut Katrin UL et al

in European Journal of Nutrition (in press)

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See detailEuropeans and Americans in Korea, 1882-1910: A Bourgeois and Translocal Community
Dittrich, Klaus UL

in Itinerario (in press), 39(3),

This article deals with the European and American community in Korea between the conclusion of Korea’s first international treaties in the early 1880s and the country’s annexation by the Japanese Empire ... [more ▼]

This article deals with the European and American community in Korea between the conclusion of Korea’s first international treaties in the early 1880s and the country’s annexation by the Japanese Empire in 1910. The article starts out by presenting an overview of the community. Concentrated in Seoul and Chemulp’o, the Anglo-Saxon element dominated a community made up of diplomats, foreign experts in the service of the Korean government, merchants and missionaries. Next, the article describes two key characteristics of the European and American residents in Korea. Firstly, they were individuals defining themselves as bourgeois, or middle-class; secondly, the term “translocality” serves to bring together the multiple layers of border-crossing these individuals were involved in – as long-distance migrants between Europe or Northern America and East Asia, as migrants within the East Asian context, and as representatives of different Euro-American nationalities living together in Korea. [less ▲]

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See detailDomain-Specificity of Need for Cognition Among High School Students
Keller, Ulrich UL; Strobel, Anja; Martin, Romain UL et al

in European Journal of Psychological Assessment (in press)

Need for Cognition (NFC) is increasingly being investigated in educational research. In contrast to other non-cognitive constructs in this area, such as academic self-concept and interest, NFC has ... [more ▼]

Need for Cognition (NFC) is increasingly being investigated in educational research. In contrast to other non-cognitive constructs in this area, such as academic self-concept and interest, NFC has consistently been conceptualized as domain-general. We employed structural equation modelling to address the question of whether NFC can be meaningfully and gainfully conceptualized as domain-specific. To this end, we developed a domain-specific 20-item NFC scale with parallel items for Science, Mathematics, German, and French. Additionally, domain-general NFC was assessed with five domain-general items. Using a cross-sectional sample of more than 4500 Luxembourgish 9th graders, we found that a nested-factor model incorporating both a general factor and domain-specific factors better accounted for the data than a single- factor or a correlated-factor model. However, the influence of the general factor was markedly stronger than in corresponding models for academic self-concept and interest. When controlling for the domain-specific factors, only Mathematics achievement was significantly predicted by the domain-general factor, while all achievement measures (Mathematics, French, and German) were predicted by the corresponding domain-specific factor. The nested domain-specific NFC factors were clearly empirically distinguishable from first-order domain-specific interest factors. [less ▲]

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See detailToward Omics-Based, Systems Biomedicine, and Path and Drug Discovery Methodologies for Depression-Inflammation Research
Maes; Nowak, Gabriel; Caso, Javier et al

in Molecular Neurobiology (in press)

Meta-analyses confirm that depression is accompanied by signs of inflammation including increased levels of acute phase proteins, e.g., C-reactive protein, and pro-inflammatory cytokines, e.g ... [more ▼]

Meta-analyses confirm that depression is accompanied by signs of inflammation including increased levels of acute phase proteins, e.g., C-reactive protein, and pro-inflammatory cytokines, e.g., interleukin-6. Supporting the translational significance of this, a meta-analysis showed that anti-inflammatory drugs may have antidepressant effects. Here, we argue that inflammation and depression research needs to get onto a new track. Firstly, the choice of inflammatory biomarkers in depression research was often too selective and did not consider the broader pathways. Secondly, although mild inflammatory responses are present in depression, other immune-related pathways cannot be disregarded as new drug targets, e.g., activation of cell-mediated immunity, oxidative and nitrosative stress (O&NS) pathways, autoimmune responses, bacterial translocation, and activation of the toll-like receptor and neuroprogressive pathways. Thirdly, anti-inflammatory treatments are sometimes used without full understanding of their effects on the broader pathways underpinning depression. Since many of the activated immune-inflammatory pathways in depression actually confer protection against an overzealous inflammatory response, targeting these pathways may result in unpredictable and unwanted results. Furthermore, this paper discusses the required improvements in research strategy, i.e., path and drug discovery processes, omics-based techniques, and systems biomedicine methodologies. Firstly, novel methods should be employed to examine the intracellular networks that control and modulate the immune, O&NS and neuroprogressive pathways using omics-based assays, including genomics, transcriptomics, proteomics, metabolomics, epigenomics, immunoproteomics and metagenomics. Secondly, systems biomedicine analyses are essential to unravel the complex interactions between these cellular networks, pathways, and the multifactorial trigger factors and to delineate new drug targets in the cellular networks or pathways. Drug discovery processes should delineate new drugs targeting the intracellular networks and immune-related pathways. [less ▲]

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See detailEvaluation of school tasks in the light of sustainability education: Textbook research in science education in Luxembourgish primary schools
Andersen, Katja Natalie UL

in Environmental Education Research (in press)

This article describes a research project that aimed to classify different types of sustainability-related school tasks in terms of two central approaches in primary school education: action-based and ... [more ▼]

This article describes a research project that aimed to classify different types of sustainability-related school tasks in terms of two central approaches in primary school education: action-based and task-based learning. Using a textbook analysis approach, the article clarifies implicit and explicit forms of sustainability education in school tasks in Luxembourgish science textbooks for Grades 1 to 6. The study uses a two-step analysis: first, scanning textbooks on content relating to sustainability; and, second, evaluating the teaching practices associated with this content apparent in the textbooks. Step one identifies the school tasks in which sustainability content is implicitly or explicitly addressed while step two analyzes which forms of action-based and task-based learning occur in these sustainability-related school tasks. Based on the results two claims can be made: first, that there is very little sustainability-related content in Luxembourgish primary science textbooks, and those topics raised mostly relate to sustainability only indirectly; secondly, action-based and task-based learning are undervalued in the context of sustainability-related school tasks; neither of the two was commonly found in school tasks in sustainability education. [less ▲]

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See detailHow Do Institutional Logics Evolve Over the Merger Process? A Case in the Public-Private Urban Planning Sector
Thelisson, Anne-Sophie; Geraudel, Mickaël UL; Missonier, Audrey

in Strategic Change (in press)

We present an analysis of the institutional logics rivalries during a merger process. We performed an in-depth longitudinal analysis of a private-public merger between two listed companies in the town ... [more ▼]

We present an analysis of the institutional logics rivalries during a merger process. We performed an in-depth longitudinal analysis of a private-public merger between two listed companies in the town planning sector. The case study was based on passive and participant observations over two years, 54 semi-structured interviews and archival records analysis. We underline that the implementation of strategic change during the merger process was fostered by the ability of the actors to combine institutional logics through three concrete practices: redefining the authority, identity and legitimacy of the new organization. We contribute to the refining of the merger literature by offering insights from the institutional logics perspective and provide managerial recommendations to facilitate the post-merger integration process. [less ▲]

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See detailUniversity competition and transnational education: the choice of branch campus
Tampieri, Alessandro UL; Poyago-Theotoky, Joanna

in B.E. Journal of Theoretical Economics (in press)

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See detailThe Century of Science: The Global Triumph of the Research University
Powell, Justin J W UL; Baker, David P.; Fernandez, Frank

in International Perspectives on Education & Society (in press), 33

In The Century of Science, a multicultural, international team of authors examines the global rise of scholarly research in science, technology, engineering, mathematics, and health (STEM+) fields. At the ... [more ▼]

In The Century of Science, a multicultural, international team of authors examines the global rise of scholarly research in science, technology, engineering, mathematics, and health (STEM+) fields. At the beginning of the 20th century, the global center-point of scientific productivity was about half way between Western Europe and the U.S., in the North Atlantic. Then, the center moved steadily westward and slightly southward—reflecting the burgeoning science capacity of the U.S. supported by America’s thriving public and private universities, technological innovation, and overall economic growth. After WWII, this began to change as the course of the world’s scientific center of gravity turned and for the next 70 years traveled eastward, the direction it still travels, especially due to the rise of China and other prolific East Asian countries, such as Japan, Taiwan, and South Korea. Europe continues to be the center of global science. Focusing on these developments, this volume provides historical and sociological understandings of the ways that higher education has become an institution that, more than ever before, shapes science and society. Case studies, supported by the most historically and spatially extensive database on STEM+ publications available, of selected countries in Europe, North America, East Asia, and the Middle East, emphasize recurring themes: the institutionalization and differentiation of higher education systems to the proliferation of university-based scientific research fostered by research policies that support continued university expansion leading to the knowledge society. Growing worldwide, research universities appear to be the most legitimate sites for knowledge production. Countries like France, Germany, the United Kingdom, the United States, and Japan began the 20th century with prerequisites in place to realize the emerging model of university-based research. Over the past several decades, China, South Korea, and Taiwan, with different historical legacies and conflicts in education and research policy, have witnessed explosive growth, sustained by public and private funds. Qatar recently embarked on an ambitious government-driven effort to develop a world-class university sector and cultivate academic STEM+ research from scratch. These more recent entrants to the global scientific enterprise pose the question whether it is possible to leapfrog across decades, or even centuries, of cultivating university systems, to compete globally. Simultaneously with international and regional competition, world-leading science increasingly implies collaboration across cultural and political borders as global scientific production and networking continue to rise exponentially. This volume’s case studies offer new insights into how countries develop the university-based knowledge thought fundamental to meeting social needs and economic demands. Despite repeated warnings that universities would lose in relevance to other organizational forms in the production of knowledge, our findings demonstrate incontrovertibly that universities have become more—not less—important actors in the world of knowledge. The past hundred years have seen the global triumph of the research university. [less ▲]

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See detailJoint signature of two or more systems with applications to multistate systems made up of two-state components
Marichal, Jean-Luc UL; Mathonet, Pierre; Navarro, Jorge et al

in European Journal of Operational Research (2017), 263(2), 559-570

The structure signature of a system made up of n components having continuous and i.i.d. lifetimes was defined in the eighties by Samaniego as the n-tuple whose k-th coordinate is the probability that the ... [more ▼]

The structure signature of a system made up of n components having continuous and i.i.d. lifetimes was defined in the eighties by Samaniego as the n-tuple whose k-th coordinate is the probability that the k-th component failure causes the system to fail. More recently, a bivariate version of this concept was considered as follows. The joint structure signature of a pair of systems built on a common set of components having continuous and i.i.d. lifetimes is a square matrix of order n whose (k,l)-entry is the probability that the k-th failure causes the first system to fail and the l-th failure causes the second system to fail. This concept was successfully used to derive a signature-based decomposition of the joint reliability of the two systems. In the first part of this paper we provide an explicit formula to compute the joint structure signature of two or more systems and extend this formula to the general non-i.i.d. case, assuming only that the distribution of the component lifetimes has no ties. We also provide and discuss a necessary and sufficient condition on this distribution for the joint reliability of the systems to have a signature-based decomposition. In the second part of this paper we show how our results can be efficiently applied to the investigation of the reliability and signature of multistate systems made up of two-state components. The key observation is that the structure function of such a multistate system can always be additively decomposed into a sum of classical structure functions. Considering a multistate system then reduces to considering simultaneously several two-state systems. [less ▲]

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See detailL’événement énonciatif en sémiotique de l’image : de Roland Barthes à la sémiotique tensive
Colas-Blaise, Marion UL; Dondero, Maria Giulia

in La part de l'oeil (2017)

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See detailBrexit and the Single European Financial Market
Howarth, David UL; Quaglia, Lucia

in Journal of Common Market Studies (2017), 55(S1), 149164

Brexit raises a set of important questions with reference to the Single Market, especially in financial services. What are the implications of Brexit for the UK and its financial industry; and what are ... [more ▼]

Brexit raises a set of important questions with reference to the Single Market, especially in financial services. What are the implications of Brexit for the UK and its financial industry; and what are the implications of Brexit for the EU and the single financial market? This topic is examined in four consecutive steps. We first discuss the UK’s influence in the development of the single financial market, including EU financial regulation, over the past two decades – and thus both prior to, and after, the international financial crisis. This overview is necessary in order to grasp the potential implications of Brexit for the UK, the EU and their financial industries – examined in the second step. We then examine the so-called safeguards secured by the UK government from the EU in the run up to the Brexit referendum and the position of the UK’s financial industry during the Brexit campaign and after the referendum. Finally, we review the post-Brexit options available to manage the relationship between the UK and the EU, specifically with regard to finance. It is argued that that the UK has been a key player in the development of the single financial market, especially prior to the international financial crisis, and has greatly benefited from it. The – at times considerable – British influence made EU financial regulation more market-friendly and open to third countries than it would have been otherwise. The EU–UK agreement signed prior to the Brexit referendum contained several clauses concerning economic governance, including non-discrimination provisions for the financial industry based in the UK. However, these provisions mainly reflected the status quo and re-stated existing commitments. The City of London and British financial industry were mostly in the pro-Remain camp during the referendum campaign – albeit there were some noteworthy financial sector supporters of Brexit. Following the June referendum, the City unsuccessfully mobilized in order to retain full access to the single financial market – the alternative options were considerably less appealing for the UK financial industry. [less ▲]

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See detailCharacterization of pinched Ricci curvature by functional inequalities
Cheng, Li Juan UL; Thalmaier, Anton UL

in Journal of Geometric Analysis (The) (2017)

In this article, functional inequalities for diffusion semigroups on Riemannian manifolds (possibly with boundary) are established, which are equivalent to pinched Ricci curvature, along with gradient ... [more ▼]

In this article, functional inequalities for diffusion semigroups on Riemannian manifolds (possibly with boundary) are established, which are equivalent to pinched Ricci curvature, along with gradient estimates, L^p-inequalities and log-Sobolev inequalities. These results are further extended to differential manifolds carrying geometric flows. As application, it is shown that they can be used in particular to characterize general geometric flow and Ricci flow by functional inequalities. [less ▲]

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See detailA classification of polynomial functions satisfying the Jacobi identity over integral domains
Marichal, Jean-Luc UL; Mathonet, Pierre

in Aequationes Mathematicae (2017), 91(4), 601-618

The Jacobi identity is one of the properties that are used to define the concept of Lie algebra and in this context is closely related to associativity. In this paper we provide a complete description of ... [more ▼]

The Jacobi identity is one of the properties that are used to define the concept of Lie algebra and in this context is closely related to associativity. In this paper we provide a complete description of all bivariate polynomials that satisfy the Jacobi identity over infinite integral domains. Although this description depends on the characteristic of the domain, it turns out that all these polynomials are of degree at most one in each indeterminate. [less ▲]

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See detailFeedforward Chemical Neural Network: An In Silico Chemical System That Learns XOR
Blount, Drew; Banda, Peter UL; Teuscher, Christof et al

in Artificial Life (2017), 23(3), 295-317

Inspired by natural biochemicals that perform complex information processing within living cells, we design and simulate a chemically implemented feedforward neural network, which learns by a novel ... [more ▼]

Inspired by natural biochemicals that perform complex information processing within living cells, we design and simulate a chemically implemented feedforward neural network, which learns by a novel chemical-reaction-based analogue of backpropagation. Our network is implemented in a simulated chemical system, where individual neurons are separated from each other by semipermeable cell-like membranes. Our compartmentalized, modular design allows a variety of network topologies to be constructed from the same building blocks. This brings us towards general-purpose, adaptive learning in chemico: wet machine learning in an embodied dynamical system. [less ▲]

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See detailBoltzmannian Immortality
Loew, Christian UL

in Erkenntnis (2017), 82(4), 761776

Plausible assumptions from Cosmology and Statistical Mechanics entail that it is overwhelmingly likely that there will be exact duplicates of us in the distant future long after our deaths. Call such ... [more ▼]

Plausible assumptions from Cosmology and Statistical Mechanics entail that it is overwhelmingly likely that there will be exact duplicates of us in the distant future long after our deaths. Call such persons “Boltzmann duplicates,” after the great pioneer of Statistical Mechanics. In this paper, I argue that if survival of death is possible at all, then we almost surely will survive our deaths because there almost surely will be Boltzmann duplicates of us in the distant future that stand in appropriate relations to us to guarantee our survival. [less ▲]

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See detailAnalysis of primary microRNA loci from nascent transcriptomes reveals regulatory domains governed by chromatin architecture
Bouvy-Liivrand, Maria; Hernandez de Sande, Ana; Pölönen, Petri et al

in Nucleic Acids Research (2017)

Changes in mature microRNA (miRNA) levels that occur downstream of signaling cascades play an important role during human development and disease. However, the regulation of primary microRNA (pri-miRNA ... [more ▼]

Changes in mature microRNA (miRNA) levels that occur downstream of signaling cascades play an important role during human development and disease. However, the regulation of primary microRNA (pri-miRNA) genes remains to be dissected in detail. To address this, we followed a data-driven approach and developed a transcript identification, validation and quantification pipeline for characterizing the regulatory domains of pri-miRNAs. Integration of 92 nascent transcriptomes and multilevel data from cells arising from ecto-, endo- and mesoderm lineages reveals cell type-specific expression patterns, allows fine-resolution mapping of transcription start sites (TSS) and identification of candidate regulatory regions. We show that inter- and intragenic pri-miRNA transcripts span vast genomic regions and active TSS locations differ across cell types, exemplified by the mir-29a∼29b-1, mir-100∼let-7a-2∼125b-1 and miR-221∼222 clusters. Considering the presence of multiple TSS as an important regulatory feature at miRNA loci, we developed a strategy to quantify differential TSS usage. We demonstrate that the TSS activities associate with cell type-specific super-enhancers, differential stimulus responsiveness and higher-order chromatin structure. These results pave the way for building detailed regulatory maps of miRNA loci. [less ▲]

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See detailThe significance of meaning in and the meaning of biodiversity research: Why IPBES needs the social sciences and humanities
Jetzkowitz, Jens; Wong, Catherine UL; Lidskog, Rolf et al

in Innovation: The European Journal of Social Science Research (2017)

The term “biodiversity” is often used to describe phenomena of nature, which can be studied without a reference to the socially constructed, evaluative, or indeed normative contexts. In our paper, we ... [more ▼]

The term “biodiversity” is often used to describe phenomena of nature, which can be studied without a reference to the socially constructed, evaluative, or indeed normative contexts. In our paper, we challenge this conception by focusing particularly on methodological aspects of biodiversity research. We thereby engage with the idea of interdisciplinary biodiversity research as a scientific approach directed at the recognition and management of contemporary society in its ecological embedding. By doing this, we explore how research on and assessments of biodiversity can be enhanced if meaning, aspiration, desires, and related aspects of agency are methodically taken into account. In six sections, we substantiate our claim that the discourse on biodiversity (including the IPBES (Intergovernmental science-policy Platform on Biodiversity and Ecosystem Services) debate) is incomplete without contributions from the social sciences and humanities. In the introduction, a brief overview of biodiversity’s conceptual history is provided showing that “biodiversity” is a lexical invention intended to create a strong political momentum. However, that does not impede its usability as a research concept. Section 2 examines the origins of the Convention on Biological Diversity (CBD) by way of sociological discourse analysis. Subsequently, it proposes a matrix as a means to structure the ambiguities and tensions inherent in the CBD. The matrix reemphasizes our main thesis regarding the need to bring social and ethical expertise to the biodiversity discourse. In Section 3, we offer a brief sketch of the different methods of the natural and social sciences as well as ethics. This lays the groundwork for our Section 4, which explains and illustrates what social sciences and ethics can contribute to biodiversity research. Section 5 turns from research to politics and argues that biodiversity governance necessitates deliberative discourses in which participation of lay people plays an important role. Section 6 provides our conclusions. [less ▲]

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