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See detailUnderstanding: judgments, categories, schemata, principles
Heidemann, Dietmar UL

in Engelhard, W. Dudley Und K. (Ed.) Immanuel Kant: Key Concepts (2010)

Detailed reference viewed: 37 (2 UL)
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See detailUndesirable Consequences and Social Contexts of Technology Use: A Micro-analysis of Embodied User Interaction
Jungmann, Manuela UL; Cox, Richard

in Interacting with Computers (2017), 29(4), 481493

The focus of this paper is on the unexpected and undesirable consequences of social interaction with technological innovations, which we analyse with the support of two frameworks to better comprehend ... [more ▼]

The focus of this paper is on the unexpected and undesirable consequences of social interaction with technological innovations, which we analyse with the support of two frameworks to better comprehend their social implications. The first, techno-social framework, consists of Allenby and Sarewitz's taxonomy of technological social function. In the second, cognitive, framework, we introduce concepts from dual-systems theory. The frameworks provide a lens through which to view techno-cultural examples. This sets the stage for our case study in which we investigate an interactive game installation. Using data analytics, we uncover hidden effects due to the social interactions between the players and to their physical attributes. We conclude that there is a pressing need for innovators to broaden the scope of their evaluations to not just evaluate innovative technologies at the initial engineering/design phase but also to conduct evaluations at later phases of adoption and appropriation that focus on social contexts-of-use. [less ▲]

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See detailUndesired Relatives: Protection Mechanisms Against The Evil Twin Attack in IEEE 802.11
Lanze, Fabian UL; Panchenko, Andriy UL; Ponce-Alcaide, Ignacio et al

in Proceedings of the 10th ACM International Symposium on QoS and Security for Wireless and Mobile Networks (2014, September)

Commonly used identifiers for IEEE 802.11 access points (APs), such as network name (SSID), MAC (BSSID), or IP address can be trivially spoofed. Impersonating existing APs with faked ones to attract their ... [more ▼]

Commonly used identifiers for IEEE 802.11 access points (APs), such as network name (SSID), MAC (BSSID), or IP address can be trivially spoofed. Impersonating existing APs with faked ones to attract their traffic is referred to in the literature as the evil twin attack. It allows an attacker with little effort and expenditure to fake a genuine AP and intercept, collect, or alter (potentially even encrypted) data. Due to its severity, the topic has gained remarkable research interest in the past decade. In this paper, we introduce a differentiated attacker model to express the attack in all its facets. We propose a taxonomy for classifying and struc- turing countermeasures and apply it to existing approaches. We are the first to conduct a comprehensive survey in this domain to reveal the potential and the limits of state-of- the-art solutions. Our study discloses an important attack scenario which has not been addressed so far, i.e., the usage of specialized software to mount the attack. We propose and experimentally validate a novel method to detect evil twin APs operated by software within a few seconds. [less ▲]

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See detailThe undulated mouse and the development of the vertebral column. Is there a human PAX-1 homologue?
Balling, Rudi UL

in Clinical Dysmorphology (1994), 3(3), 185-91

The mouse is a very useful system for the analysis of vertebral column development, particularly as a model for human skeletal diseases. A large number of mutant mouse strains exist with specific ... [more ▼]

The mouse is a very useful system for the analysis of vertebral column development, particularly as a model for human skeletal diseases. A large number of mutant mouse strains exist with specific inherited skeletal defects. Undulated (un) is one of these mutants showing abnormalities of the vertebral bodies and intervertebral discs. The gene responsible for un has been identified as the Pax-1 gene, a member of the Pax-gene family. A human disease homologue to un is not known so far. In order to facilitate identification of a potential human PAX-1 disease, an overview is given describing what is currently known about the pathological and molecular analysis of un. It is hoped that this will help medical geneticists and dysmorphologists to identify a potential human disease, which corresponds to a mutation in the PAX-1 gene. [less ▲]

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See detailundulated, a mutation affecting the development of the mouse skeleton, has a point mutation in the paired box of Pax 1.
Balling, Rudi UL; Deutsch, U.; Gruss, P.

in Cell (1988), 55(3), 531-5

undulated (un) homozygous mice exhibit vertebral malformations along the entire rostro-caudal axis. Pax 1, a murine paired box-containing gene, is expressed in ventral sclerotome cells and later in ... [more ▼]

undulated (un) homozygous mice exhibit vertebral malformations along the entire rostro-caudal axis. Pax 1, a murine paired box-containing gene, is expressed in ventral sclerotome cells and later in intervertebral disks along the entire vertebral column. We localized the Pax 1 gene on chromosome 2 between beta 2-microglobulin and the agouti locus to an area where un maps. DNA analysis of the un mutant revealed a point mutation in a highly conserved part of the paired box of Pax 1, leading to a Gly-Ser replacement. The chromosomal location and the mutation in the paired box of un mice in conjunction with Pax 1 gene expression in wild-type mice implicate a causative role of Pax 1 in generation of the vertebral column. [less ▲]

Detailed reference viewed: 44 (0 UL)
See detailUne brêve introduction aux faisceaux pervers
Petit, François UL

Presentation (2016, April 13)

Detailed reference viewed: 50 (3 UL)
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See detailUneinheitlich einheitlich. Über die Sozialpädagogik der sozialpädagogischen Theorie
Neumann, Sascha UL; Sandermann, Philipp

in Schweizerische Zeitschrift für Soziale Arbeit (2007), 2(3), 9-26

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See detailUnemployment and mental health in a favorable labor market
Houssemand, Claude UL; Meyers, Raymond UL

in International Journal of Psychology (2011), 46(5), 377-385

Labour market variables may moderate the link between unemployment and mental health, as has been found in numerous research papers. The aim of this study was to test, in the context of a very favorable ... [more ▼]

Labour market variables may moderate the link between unemployment and mental health, as has been found in numerous research papers. The aim of this study was to test, in the context of a very favorable labor market, (1) the detrimental effect of unemployment on mental health and (2) the predictive validity of mental health on further employment status. The population of the study comprised 384 newly registered unemployed persons. Mental health was assessed through four variables: self-esteem, psychological distress, perceived stress, and depressive symptoms. The results did not confirm previous studies. Using analyses of variance for repeated measures and linear regression, a negative change of mental health was not found after 6 and 12 months’ unemployment, and the four measurements of mental health at registration did not predict employment status 6 and 12 months later. Results are discussed in terms of moderating variables that capture Luxembourg labor market specificities. [less ▲]

Detailed reference viewed: 54 (7 UL)
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See detailUnemployment and mental health in Luxembourg
Houssemand, Claude UL; Meyers, Raymond UL

Poster (2008, September)

Detailed reference viewed: 28 (0 UL)
See detailUnemployment in Belgium: Lessons from a Macroeconomic Model with Quantity Constraints
Sneessens, Henri UL; Drèze, Jacques H.

in Van der Wee, H.; Blomme, J. (Eds.) The Economic Development of Belgium since 1870 (1997)

Detailed reference viewed: 20 (2 UL)
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See detailUnemployment Normalization in Different Economic Contexts
Houssemand, Claude UL; Pignault, Anne UL

in Liu, Yang (Ed.) Unemployment - Perspectives and Solutions (2017)

A recent strand of research has raised the question of whether a change is underway in the relationships that people have with work and nonwork. This body of work suggests that the manner in which people ... [more ▼]

A recent strand of research has raised the question of whether a change is underway in the relationships that people have with work and nonwork. This body of work suggests that the manner in which people view unemployment and not working is changing. This chapter pursues and clarifies the first results of this research. The authors hypothesize a process of unemployment normalization, defined as the view that unemployment is a normal or even inevitable phase of life in a person’s career path and is the result of external circumstances rather than personal ones. This was tested with 600 unemployed people in two different economic contexts—France and Luxembourg—using a scale that revealed two latent factors: Justification for current unemployment situation and Perceived normality of unemployment. The findings reveal differences in the degree of normalization according to socioeconomic variables as well as an impact on the perceived health of the unemployed. [less ▲]

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See detailUnemployment Normalization: Its Effect on Mental Health During Various Stages of Unemployment.
Thill, Steve UL; Houssemand, Claude UL; Pignault, Anne

in Psychological Reports (2018)

Detailed reference viewed: 8 (1 UL)
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See detailUnequal-sphere packing model for simulation of the uniaxially compressed iodine adlayer on Au(111)
Tkatchenko, Alexandre UL; Batina, Nikola

in JOURNAL OF PHYSICAL CHEMISTRY B (2005), 109(46), 21710-21715

A simple unequal-sphere packing (USP) model, based on pure geometrical principles, was applied to study the centered-rectangular iodine c(p x root 3)R30 degrees adlayer on the Au(111) surface, well-known ... [more ▼]

A simple unequal-sphere packing (USP) model, based on pure geometrical principles, was applied to study the centered-rectangular iodine c(p x root 3)R30 degrees adlayer on the Au(111) surface, well-known from surface X-ray structure (SXS), low energy electron diffraction (LEED) and scanning tunneling microscopy (STM) experiments. To reproduce the exact patterns observed in experiments, two selective conditions-minimum average adsorbate height and minimum adlayer roughness-were imposed. As a result, a series of adlayer patterns with c(p x root 3)R30 degrees symmetry (2.3 < p < 3), with precise structural details, including atomic registry and identification of the p-bisector as the most likely trajectory for the iodine adatom movement during the so-called uniaxial compression phenomenon, were identified. In addition, using the same model, the difference between the iodine adlayer arranged in hexagonal and centered-rectangular c(p x root 3)R30 degrees patterns, as in the case of Pt(111) and Au(111) surfaces, was investigated. Qualitative and quantitative comparison shows that iodine adatoms in these two arrangements differ significantly in atomic registry, distance from the substrate, and the adlayer corrugation. Our findings could be of special interest in the study of the nature of the iodine adatom bonding to different substrates (i.e., Au vs Pt). [less ▲]

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See detailUnequal-sphere packing model for the structural arrangement of the well-ordered adsorbate-substrate system
Tkatchenko, Alexandre UL; Batina, Nikola

in Physical Review. B: Condensed Matter and Materials Physics (2004), 70(19), 1-8

In order to understand the well-ordered adsorbate-substrate systems at atomic level, a method is developed based on the simulation of packing arrangements for layers of unequal spheres, in three ... [more ▼]

In order to understand the well-ordered adsorbate-substrate systems at atomic level, a method is developed based on the simulation of packing arrangements for layers of unequal spheres, in three-dimensional space. The model, based on geometrical principles, is developed for fee structure consisting of two hexagonal ordered layers. During simulation, adsorbate spheres were accommodated in different positions, forming a great variety of structures, in dependence of the intersphere distance of the upper layer spheres. Using the average height of the adsorbate layer on the flat substrate as a determinant parameter, several specific structures have been selected as the most probable: (√3 x √3)R30°, (√7 x √7)R19.1°, and (3 x 3). Indeed, they correspond to typical accommodations of the iodine adatoms on the Pt(111) surface, earlier found in experimental studies, which clearly supports the validity of our model. The model developed in our study could completely and satisfactorily describe the accommodation process of the iodine adlayer on the Pt(111) surface. This methodology could be of great help for interpretation of scanning tunneling microscopy images, better understanding of adlayer structures, and design of adsorbate-substrate systems with exciting properties. [less ▲]

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See detailDas Unerhörte der Erinnerung des Unerhörten. Zur ästhetischen Produktivität der Memoria in der Nach-Wende-Novellistik
Heimböckel, Dieter UL

in Gilleir, Anke; De Winde, Arne (Eds.) Literatur im Krebsgang. Totenbeschwörung und Memoria in der deutschsprachigen Gegenwartsliteratur nach 1989 (2008)

Detailed reference viewed: 53 (1 UL)
See detailUnerhörtes aus dem Niemandsland. Ralf Rothmanns Roman „Wäldernacht“
Heimböckel, Dieter UL

in Der Deutschunterricht : Beiträge zu seiner Praxis und wissenschaftlichen Grundlegung (2010), 62(2), 68-76

Detailed reference viewed: 48 (2 UL)
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See detailDas UNESCO Weltkulturerbe der Großregion SaarLorLux
Mendgen, Eva; Pauly, Michel UL; Caruso, Geoffrey UL et al

E-print/Working paper (2011)

In der Großregion gibt es heute nicht weniger als dreizehn UNESCO-Welterbestätten. Sie stehen für die reiche Geschichte und die außergewöhnliche kulturelle Vielfalt der Großregion, sie repräsentieren ... [more ▼]

In der Großregion gibt es heute nicht weniger als dreizehn UNESCO-Welterbestätten. Sie stehen für die reiche Geschichte und die außergewöhnliche kulturelle Vielfalt der Großregion, sie repräsentieren unterschiedliche Epochen und Kategorien. Bau- und Industriedenkmäler gehören ebenso dazu, wie Platz- und Altstadtensembles, Festungsanlagen und ganze Kulturlandschaften. Jede Welterbestätte bringt ihre eigene Geschichte mit sich, ihr eigenes räumliches, kulturelles, gesellschaftliches Koordinatensystem. [less ▲]

Detailed reference viewed: 27 (1 UL)
See detailUnexpected flow and relaxation behaviour of a low molecular weight glass former
Baller, Jörg UL

Presentation (2015, January 22)

Detailed reference viewed: 42 (4 UL)