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See detailThe role of nutrition and literacy on the cognitive functioning of elderly poor individuals
Leist, Anja UL; Novella, Rafael; Olivera, Javier

in Journal of Aging & Social Policy (in press)

Maintaining cognitive function is a prerequisite of living independently, which is a highly valued component in older individuals’ wellbeing. In this paper we assess the role of early-life and later-life ... [more ▼]

Maintaining cognitive function is a prerequisite of living independently, which is a highly valued component in older individuals’ wellbeing. In this paper we assess the role of early-life and later-life nutritional status, education and literacy on the cognitive functioning of older adults living in poverty in Peru. We exploit the baseline sample of the Peruvian non-contributory pension program Pension 65 and find that current nutritional status and literacy are strongly associated with cognitive functioning for poor older adults. In a context of rising popularity of non-contributory pension programs around the world, our study intends to contribute to the discussion of designing accompanying measures to the pension transfer, such as adult literacy programs and monitoring of adequate nutrition of older adults. [less ▲]

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See detailModeling Security and Privacy Requirements: a Use Case-Driven Approach
Mai, Xuan Phu UL; Göknil, Arda UL; Shar, Lwin Khin et al

in Information and Software Technology (in press)

Context: Modern internet-based services, ranging from food-delivery to home-caring, leverage the availability of multiple programmable devices to provide handy services tailored to end-user needs. These ... [more ▼]

Context: Modern internet-based services, ranging from food-delivery to home-caring, leverage the availability of multiple programmable devices to provide handy services tailored to end-user needs. These services are delivered through an ecosystem of device-specific software components and interfaces (e.g., mobile and wearable device applications). Since they often handle private information (e.g., location and health status), their security and privacy requirements are of crucial importance. Defining and analyzing those requirements is a significant challenge due to the multiple types of software components and devices integrated into software ecosystems. Each software component presents peculiarities that often depend on the context and the devices the component interact with, and that must be considered when dealing with security and privacy requirements. Objective: In this paper, we propose, apply, and assess a modeling method that supports the specification of security and privacy requirements in a structured and analyzable form. Our motivation is that, in many contexts, use cases are common practice for the elicitation of functional requirements and should also be adapted for describing security requirements. Method: We integrate an existing approach for modeling security and privacy requirements in terms of security threats, their mitigations, and their relations to use cases in a misuse case diagram. We introduce new security-related templates, i.e., a mitigation template and a misuse case template for specifying mitigation schemes and misuse case specifications in a structured and analyzable manner. Natural language processing can then be used to automatically report inconsistencies among artifacts and between the templates and specifications. Results: We successfully applied our approach to an industrial healthcare project and report lessons learned and results from structured interviews with engineers. Conclusion: Since our approach supports the precise specification and analysis of security threats, threat scenarios and their mitigations, it also supports decision making and the analysis of compliance to standards. [less ▲]

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See detailConflicting temporalities of social and environmental change
Lockie, Stewart; Wong, Catherine UL

in Boström, M.; Davidson, D. (Eds.) Environment and Society: Concepts and Challenges. (in press)

This chapter explores how time and temporality – that is, the rhythms and tempos of social and environmental change – have been considered in social theory before going on to explore the conceptual ... [more ▼]

This chapter explores how time and temporality – that is, the rhythms and tempos of social and environmental change – have been considered in social theory before going on to explore the conceptual frameworks and practices through which policy-makers seek to influence temporal processes in the specific context of climate change policy. The chapter highlights conflict between the temporalities of climate change and the temporalities of politics, as well as conflict between the temporalities of competing political and decision-making processes. While policy-makers advocate strategies to depoliticize climate policy in response to these conflicts, the chapter argues this is neither possible nor desirable. Instead, it advocates more democratic and deliberative approaches to the challenge of synchronizing ever more visible ecological temporalities with the multiple temporalities of the social. [less ▲]

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See detailEnvironmental and Sustainability Education (ESE) in the Benelux region
Van Poeck, Katrien; Wals, Arjen E.J.; König, Ariane UL

in Environmental Education Research (in press)

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See detailAssessment of the suitability of gravel wash mud as raw material for the synthesis of an alkali-activated binder
Thapa, Vishojit Bahadur UL; Waldmann, Danièle UL; Wagner, Jean-Frank et al

in Applied Clay Science (SJR Index:Q1) (in press)

Gravel wash mud (GWM), a waste product from gravel mining was dried and processed into a fine powder to be activated by different concentrations of sodium hydroxide (NaOH) solutions for the synthesis of ... [more ▼]

Gravel wash mud (GWM), a waste product from gravel mining was dried and processed into a fine powder to be activated by different concentrations of sodium hydroxide (NaOH) solutions for the synthesis of an alkali-activated binder. The GWM powders were thermally treated at five different calcination temperatures 550, 650, 750, 850 and 950°C. The characterisation of the raw material comprises the particle size distribution (PSD) by laser granulometry, the chemical and mineralogical composition by X-ray fluorescence and X-ray diffraction analysis respectively, and simultaneous thermal analysis. The performance of the alkali-activated binders was examined using compression strength tests and the microstructure was observed using scanning electron microscopy (SEM). The GWM was classified as an aluminosilicate raw material with kaolinite and illite as main clay minerals. Furthermore, a mean particle size around 6.50μm was determined for the uncalcined and calcined GWM powders. The SEM images of the developed binders showed the formation of a compact microstructure, however, relatively low strengths were achieved. This preliminary study highlights an example of an aluminosilicate prime material, which shows very promising chemical and mineralogical characteristics, but its suitability for alkaline activation without further additives was not confirmed as far as performance-based criteria are considered. [less ▲]

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See detailA Mathematical Model and a Firefly Algorithm for an Extended Flexible Job Shop Problem with Availability Constraints
Tessaro Lunardi, Willian UL; Cherri, Luiz Henrique; Voos, Holger UL

in 17th International Conference on Artificial Intelligence and Soft Computing, Zakopane, Poland, June 3-7, 2018 (2018, June)

Manufacturing scheduling strategies have historically ignored the availability of the machines. The more realistic the schedule, more accurate the calculations and predictions. Availability of machines ... [more ▼]

Manufacturing scheduling strategies have historically ignored the availability of the machines. The more realistic the schedule, more accurate the calculations and predictions. Availability of machines will play a crucial role in the Industry 4.0 smart factories. In this paper, a mixed integer linear programming model (MILP) and a discrete firefly algorithm (DFA) are proposed for an extended multi-objective FJSP with availability constraints (FJSP-FCR). Several standard instances of FJSP have been used to evaluate the performance of the model and the algorithm. New FJSP-FCR instances are provided. Comparisons among the proposed methods and other state-of-the-art reported algorithms are also presented. Alongside the proposed MILP model, a Genetic Algorithm is implemented for the experiments with the DFA. Extensive investigations are conducted to test the performance of the proposed model and the DFA. The comparisons between DFA and other recently published algorithms shows that it is a feasible approach for the stated problem. [less ▲]

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See detailDystonie und Neurochirurgie
Hertel, Frank UL

in Bächli, Heidi; Lütschg, Jürg; Messing-Jünger, Martina (Eds.) Pädiatrische Neurochirurgie (2018)

Praxisorientiert und reich bebildert sind alle Erkrankungen, die bei Kindern einen neurochirurgischen Eingriff erforderlich machen, in diesem Buch beschrieben. Der Schwerpunkt liegt auf den diagnostischen ... [more ▼]

Praxisorientiert und reich bebildert sind alle Erkrankungen, die bei Kindern einen neurochirurgischen Eingriff erforderlich machen, in diesem Buch beschrieben. Der Schwerpunkt liegt auf den diagnostischen und therapeutischen Entscheidungen sowie auf den zahlreichen Unterschieden, die bei Kindern im Vergleich zum Vorgehen bei Erwachsenen zu berücksichtigen sind. Neben den Indikationen zur Operation sind mit dem Ziel übergreifender Therapiekonzepte auch die konservativen Behandlungsmöglichkeiten berücksichtigt. Experten aus dem ganzen deutschsprachigen Raum konnten als Autoren für die Kapitel zu den einzelnen Themen gewonnen werden. [less ▲]

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See detailLa satisfaction de vie des élèves au Luxembourg
Heinz, Andreas UL

E-print/Working paper (2018)

Dans le cadre de l’enquête HBSC 2014, les élèves devaient indiquer à quel point ils étaient satisfaits de leur vie. La valeur « 0 » signifiait « la plus mauvaise vie possible » et la valeur « 10 » ... [more ▼]

Dans le cadre de l’enquête HBSC 2014, les élèves devaient indiquer à quel point ils étaient satisfaits de leur vie. La valeur « 0 » signifiait « la plus mauvaise vie possible » et la valeur « 10 » signifiait « la meilleur vie possible ». Parmi les participants du Luxembourg, 82 % ont indiqué une valeur de 6 ou plus, ce qui est défini comme étant « un niveau de satisfaction de vie élevé ». Pour 10 % d’entre eux, la satisfaction de vie était cotée avec la valeur moyenne de 5 et les 8 % restants ont indiqué une valeur inférieure à 5. La satisfaction de vie des filles moins âgées est plus élevée que celle des filles plus âgées. Chez les garçons, par contre, la satisfaction de vie reste pratiquement constante de 11 à 18 ans. Les garçons sont plus satisfaits de leur vie que les filles, ainsi que les enfants issus des familles avec un niveau socio-économique élevé, en comparaison avec ceux issus des familles ayant un niveau socio-économique faible. La satisfaction de vie est également liée aux problèmes de santé : les élèves qui indiquent souffrir fréquemment de douleurs, de tristesse, de mauvaise humeur / d’irritabilité, de nervosité, de problèmes à s’endormir ou de vertiges sont moins souvent satisfaits de leur vie. [less ▲]

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See detailLe surpoids chez les élèves au Luxembourg
Heinz, Andreas UL

E-print/Working paper (2018)

Dans le cadre de l’enquête HBSC 2014, réalisée dans plusieurs pays de l’Union européenne, les élèves étaient interrogés concernant leur taille et leur poids pour permettre de calculer leur indice de masse ... [more ▼]

Dans le cadre de l’enquête HBSC 2014, réalisée dans plusieurs pays de l’Union européenne, les élèves étaient interrogés concernant leur taille et leur poids pour permettre de calculer leur indice de masse corporelle (IMC). Parmi les participants, 13 % sont trop maigres, 72 % ont un poids normal, 13 % sont en surpoids et 3 % sont obèses. En comparant avec les autres pays, il y a relativement peu d’enfants de 11 ans au Luxembourg en surpoids. La proportion des élèves de 15 ans en situation de surpoids se trouve au niveau de la moyenne internationale. Les enfants issus de familles de niveau socio-économique élevé ont un risque plus faible d’être en surpoids que ceux des familles avec un niveau plus bas. Les élèves de l’enseignement fondamental et du secondaire sont moins susceptibles d’être en surpoids que ceux du secondaire technique et du modulaire. [less ▲]

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See detailLes problèmes de santé des élèves luxembourgeois
Heinz, Andreas UL

E-print/Working paper (2018)

Dans le cadre de l’enquête HBSC 2014, réalisée dans plusieurs pays de l’Union européenne, les élèves interrogés devaient indiquer la fréquence à laquelle ils souffraient des huit problèmes de santé ... [more ▼]

Dans le cadre de l’enquête HBSC 2014, réalisée dans plusieurs pays de l’Union européenne, les élèves interrogés devaient indiquer la fréquence à laquelle ils souffraient des huit problèmes de santé suivants : maux de tête ou de dos, douleurs abdominales, tristesse, irritabilité, nervosité, difficultés à s’endormir ou vertiges. Le résultat démontre que 41 % des élèves affirmaient avoir plusieurs fois par semaine voire quotidiennement au moins deux des huit problèmes précités. Les filles souffrent plus fréquemment de problèmes de santé que les garçons, ainsi que les élèves plus âgés comparativement aux plus jeunes. En outre, des enfants issus de familles avec un niveau socio-économique faible ont plus souvent des problèmes de santé que les enfants des familles ayant un niveau socio-économique élevé. Enfin, les élèves du secondaire technique et du modulaire souffrent plus fréquemment de problèmes de santé que les élèves de l’enseignement fondamental et du secondaire. [less ▲]

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See detailWWI: Kosakenmütze und roter Stern: Russische Gefangene in Luxemburg 1918
Ganschow, Inna UL

E-print/Working paper (2018)

Die vorliegende Teiluntersuchung beschäftigt sich mit den 3.100 russischen Kriegsgefangenen, die 1918 Luxemburg passierten. Etwa 300 blieben nachweislich in Luxemburg, da die sowjetische Ideologie in ... [more ▼]

Die vorliegende Teiluntersuchung beschäftigt sich mit den 3.100 russischen Kriegsgefangenen, die 1918 Luxemburg passierten. Etwa 300 blieben nachweislich in Luxemburg, da die sowjetische Ideologie in ihrer neuen Heimat, die nun Russische Sowjetische Föderative Sozialistische Republik hieß, sie nicht ansprach. In einer mikrohistorischen Perspektive werden mehrere Schicksale vorgeführt, anhand derer man zum einen die Bedingungen dieser Emigration versteht, die sich zwar auf neutralen Boden vollzog, jedoch unter der stetigen Verfolgung durch die deutsche Armee, die die Unabhängigkeit Luxemburgs wenig kümmerte. Zum anderen wird gezeigt, wie “Russisch” immer mehr mit “Kommunistisch” assoziiert wurde und alle Russen unter Verdacht standen, “rot” zu sein. [less ▲]

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See detailThe PytEuk puzzle
Perucca, Antonella UL

Diverse speeches and writings (2018)

We present an original mathematical exhibit in form of a puzzle visualising Pythagoras' Theorem and also the property that the square on the hypothenuse, when cut by the altitude line, consists of two ... [more ▼]

We present an original mathematical exhibit in form of a puzzle visualising Pythagoras' Theorem and also the property that the square on the hypothenuse, when cut by the altitude line, consists of two rectangles that have the size of the two squares on the cathetes. [less ▲]

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See detailRussians in Luxembourg, WWII: Поиски старого друга
Ganschow, Inna UL

E-print/Working paper (2018)

Спустя семьдесят лет после окончания Второй мировой войны бывший люксембургский военнопленный решил найти своего старого русского друга, которого пригнали на принудительные работы в сталелитейной ... [more ▼]

Спустя семьдесят лет после окончания Второй мировой войны бывший люксембургский военнопленный решил найти своего старого русского друга, которого пригнали на принудительные работы в сталелитейной промышленности и сельском хозяйстве Люксембурга наравне с другими 4.000 узниками. Судьбы двух пленных переплелись, как они переплетутся между советскими и люксембургскими поданными в Европе еще не раз ... [less ▲]

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See detailRussians in Luxembourg: Русские в Вильтце - история первых эмигрантов
Ganschow, Inna UL

E-print/Working paper (2018)

Люксембургская русская община ведет свой отсчет с 1927 года – десятой годовщины Февральской, а потом и Октябрьской, революции. Девяносто лет назад прибыли эмигранты, прошедшие Гражданскую войну и ... [more ▼]

Люксембургская русская община ведет свой отсчет с 1927 года – десятой годовщины Февральской, а потом и Октябрьской, революции. Девяносто лет назад прибыли эмигранты, прошедшие Гражданскую войну и Крымскую эвакуацию 1920-го, положившую конец сопротивлению Белого движения на Юге России. Приехали в Люксембург, думая, что ненадолго, а остались... навсегда. [less ▲]

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See detailLa "souveraineté européenne" et la réforme de la zone euro: à la recherche d'un nouveau compromis franco-allemand
Allemand, Frederic UL

Article for general public (2018)

En deux discours prononcés, en septembre 2017, à Athènes puis à la Sorbonne, Emmanuel Macron a marqué le retour de la France au cœur de l’Europe, en appelant à la refondation du projet européen, sous la ... [more ▼]

En deux discours prononcés, en septembre 2017, à Athènes puis à la Sorbonne, Emmanuel Macron a marqué le retour de la France au cœur de l’Europe, en appelant à la refondation du projet européen, sous la forme d’une « Europe souveraine, unie et démocratique ». L’argument de la souveraineté est placé au service d’une rhétorique traditionnelle des exécutifs français d’une Europe qui protège, qui ne peut être qu’une « Europe puissance ». Les domaines d’expression de cette souveraineté découlent des défis géopolitiques, sécuritaires, sociétaux ou économiques pour la France et l’Europe : la défense, la sécurisation des frontières extérieures, les relations extérieures, la transition écologique, le numérique et la compétitivité économique. Cette dernière « marque de souveraineté » fonde une réflexion spécifique sur la réforme de la gouvernance de la zone euro. Ce dernier point concentrera notre attention : l’ambition française pointe un angle-mort de la gouvernance de la zone euro et cache une préoccupation récurrente depuis dix ans : le décrochage de compétitivité d’avec l’Allemagne et le financement des réformes nécessaires pour rattraper ce retard. [less ▲]

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See detailAnalysis and Comparison of Eurocodes and Chinese codes of Design
Santos Ferreira, Katia UL; Zhang, Qingjie UL; Schäfer, Markus UL

in Young Engineers Colloquium Munich 2018 (2018, April 13)

Eurocodes (EC) which were published in 2007 are one of the most advanced standards for structure design in the world. Today, Eurocodes are not only used in EU or EFTA countries, but also many other ... [more ▼]

Eurocodes (EC) which were published in 2007 are one of the most advanced standards for structure design in the world. Today, Eurocodes are not only used in EU or EFTA countries, but also many other countries use Eurocodes or align their National standards with them, which gives Eurocodes global influence. Chinese codes of practise, on the other hand, benefit from the recent fast developed construction industry and have a vast application base. In the recent years, half of the new building floor area worldwide is built in China. Thus, it is interesting to compare Eurocodes (one of the most used codes worldwide) with the Chinese codes of design (with which most buildings were recently built). [less ▲]

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See detailLongitudinal Shaer in Composite Beams
Zhang, Qingjie UL; Schäfer, Markus UL

in Young Engineers Colloquium Munich 2018 (2018, April 13)

Longitudinal shear has important influences on the performance of composite beams. According to Eurocode 4, with cross-section class 1 and 2 in combination with ductile shear connectors, a plastic method ... [more ▼]

Longitudinal shear has important influences on the performance of composite beams. According to Eurocode 4, with cross-section class 1 and 2 in combination with ductile shear connectors, a plastic method, considering redistribution of longitudinal shear force is allowed. The conditions therefore are full development of plastic moment resistance and sufficient slip at interface to reach the plateau of P-δ curve of the shear connectors. However, for slim-floor beams, it is to question if the above-mentioned method can be applied. To answer it, related topics still need further investigation, which is the focus of the author’s Ph.D work. This paper presents part of the first stage results on the theoretical analysis of longitudinal shear, considering the influence of plasticity of the beam. For composite beams with rigid shear connectors, non-linear shear stress distribution appears in the plastic region, which influences the shear connector arrangement. However, detailed theoretical research is still hard to be found. In this work, based on a simple beam partly in plastic zone, mathematical equations are developed to calculate the plastic zone height and longitudinal shear stress distribution. Benchmarks with ANSYS and existing tests are performed. [less ▲]

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See detailThermodynamically consistent coarse graining of biocatalysts beyond Michaelis–Menten
Wachtel, Artur UL; Rao, Riccardo UL; Esposito, Massimiliano UL

in New Journal of Physics (2018), 20(4), 042002

Starting from the detailed catalytic mechanism of a biocatalyst we provide a coarse-graining procedure which, by construction, is thermodynamically consistent. This procedure provides stoichiometries ... [more ▼]

Starting from the detailed catalytic mechanism of a biocatalyst we provide a coarse-graining procedure which, by construction, is thermodynamically consistent. This procedure provides stoichiometries, reaction fluxes (rate laws), and reaction forces (Gibbs energies of reaction) for the coarse-grained level. It can treat active transporters and molecular machines, and thus extends the applicability of ideas that originated in enzyme kinetics. Our results lay the foundations for systematic studies of the thermodynamics of large-scale biochemical reaction networks. Moreover, we identify the conditions under which a relation between one-way fluxes and forces holds at the coarse-grained level as it holds at the detailed level. In doing so, we clarify the speculations and broad claims made in the literature about such a general flux–force relation. As a further consequence we show that, in contrast to common belief, the second law of thermodynamics does not require the currents and the forces of biochemical reaction networks to be always aligned. [less ▲]

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See detailBelgien in Deutschland oder Belgier in Deutschland? Die Zeit der Präsenzpolitik (1945-1955)
Brüll, Christoph UL

Scientific Conference (2018, April 12)

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