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See detailShifts of spatial attention cued by irrelevant numbers: Electrophysiological evidence from a target discrimination task
Schuller, Anne-Marie UL; Hoffmann, Danielle UL; Goffaux, Valérie et al

in Journal of cognitive pychology (2014)

Fischer et al. demonstrated that a centrally presented number can shift attention to the left/right when its magnitude is small/large. Two electrophysiological studies described these attentional effects ... [more ▼]

Fischer et al. demonstrated that a centrally presented number can shift attention to the left/right when its magnitude is small/large. Two electrophysiological studies described these attentional effects as eventrelated potentials (ERPs) at centro-parietal sites. Since both studies used target detection tasks, it remains currently unknown whether similar results would be obtained with a discrimination task. We used ERPs to test whether digit cues also induce attention shifts when participants perform a feature discrimination task on targets. ERPs were recorded whereas subjects discriminated the colour of lateral targets that were preceded by a central non-predictive digit. Analysis of cue-locked controlateral vs. ipsilateral ERP activity showed the emergence of early preparatory attention-directing components in parietal and frontal regions. Moreover, target-locked P1 components at occipito-parietal sites were significantly modulated by digit magnitude-target side congruency. These results demonstrate that irrelevant digit cues also bias sensory processing when embedded in a feature-discrimination task. [less ▲]

Detailed reference viewed: 207 (19 UL)
Peer Reviewed
See detailShifts of spatial attention cued by irrelevant numbers: Electrophysiological evidence from a target discrimination task
Schuller, Anne-Marie UL; Hoffmann, Danielle UL; Schiltz, Christine UL

Poster (2012, February 10)

Fischer et al. demonstrated that a centrally presented number can shift attention to the left/right when its magnitude is small/large. Two electrophysiological studies described these attentional effects ... [more ▼]

Fischer et al. demonstrated that a centrally presented number can shift attention to the left/right when its magnitude is small/large. Two electrophysiological studies described these attentional effects as event-related potentials (ERPs) at centro-parietal sites. Since both studies used target detection tasks, it remains currently unknown whether similar results would be obtained with a discrimination task. We used ERPs to test whether digit cues also induce attention shifts when participants perform a feature-discrimination task on targets. ERPs were recorded whereas subjects discriminated the colour of lateral targets that were preceded by a central non-predictive digit. Analysis of cue-locked controlateral vs. ipsilateral ERP activity showed the emergence of early preparatory attention-directing components in parietal and frontal regions. Moreover, target-locked P1 components at occipito-parietal sites were significantly modulated by digit magnitude-target side congruency. These results demonstrate that irrelevant digit cues also bias sensory processing when embedded in a feature-discrimination task. [less ▲]

Detailed reference viewed: 75 (0 UL)
Peer Reviewed
See detailShifts of spatial attention cued by irrelevant numbers: Electrophysiological evidence from a target discrimination task
Schuller, Anne-Marie UL; Hoffmann, Danielle UL; Schiltz, Christine UL

Poster (2011, April)

Fischer et al. demonstrated that a centrally presented number can shift attention to the left/right when its magnitude is small/large. Two electrophysiological studies described these attentional effects ... [more ▼]

Fischer et al. demonstrated that a centrally presented number can shift attention to the left/right when its magnitude is small/large. Two electrophysiological studies described these attentional effects as event-related potentials (ERPs) at centro-parietal sites. Since both studies used target detection tasks, it remains currently unknown whether similar results would be obtained with a discrimination task. We used ERPs to test whether digit cues also induce attention shifts when participants perform a feature-discrimination task on targets. ERPs were recorded whereas subjects discriminated the colour of lateral targets that were preceded by a central non-predictive digit. Analysis of cue-locked controlateral vs. ipsilateral ERP activity showed the emergence of early preparatory attention-directing components in parietal and frontal regions. Moreover, target-locked P1 components at occipito-parietal sites were significantly modulated by digit magnitude-target side congruency. These results demonstrate that irrelevant digit cues also bias sensory processing when embedded in a feature-discrimination task. [less ▲]

Detailed reference viewed: 87 (3 UL)
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See detailShifts of spatial attention cued by irrelevant numbers: electrophysiological evidence.
Schuller, Anne-Marie UL

in Journal of Cognitive Neuroscience (2011)

Detailed reference viewed: 41 (5 UL)
Peer Reviewed
See detailShipping news. The implications of electronic commerce for logistics and freight transportation.
Hesse, Markus UL

in Resources, Conservation & Recycling (2002), 36(3), 211-240

Detailed reference viewed: 147 (0 UL)
Peer Reviewed
See detailShock-Coping and Household Finance in Rural Vietnam
Klump, Rainer UL

in Microinsurance: An Innovative Tool for Risk and Disaster Management (2010)

Detailed reference viewed: 34 (1 UL)
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See detailShoot at First Sight! First Person Shooter Players Display Reduced Reaction Time and Compromised Inhibitory Control in Comparison to Other Video Game Players
Deleuze, Jory; Christiaens, Maxime; Nuyens, Filip et al

in Computers in Human Behavior (2017), 72

Studies have shown that regular video games use might improve cognitive and social skills. In contrast, other studies have documented the negative outcomes of excessive gaming vis-à-vis health and ... [more ▼]

Studies have shown that regular video games use might improve cognitive and social skills. In contrast, other studies have documented the negative outcomes of excessive gaming vis-à-vis health and socioprofessional spheres. Both positive and negative outcomes of video game use were linked to their structural characteristics (i.e., features that make the game appealing or are inducements for all gamers to keep playing regularly). The current study tested whether active video gamers from main genres (massively multiplayer online role-playing games, online first person shooter, multiplayer online battle arena) differed in a laboratory task that measured inhibitory control. Eighty-one gamers performed the Hybrid-Stop Task, assessing restraint (go/no-go trials) and cancellation (stop-signal trials) processes of a prepotent response. They completed additional self-reported questionnaires measuring demographics, problematic video game use, impulsivity traits, and depressive symptoms. Results showed that when confounding variables were controlled for, participants whose favorite game is online first person shooter were characterized by accelerated motor responses yet reduced abilities to cancel a prepotent response. No differences between groups were identified regarding the restraint process. The findings of this pilot study might have clear implications for video gaming research by supporting the critical importance of distinguishing between video game genres when considering their specific potential benefits and detrimental effects [less ▲]

Detailed reference viewed: 170 (3 UL)
See detailShopping Assistant
Klasen, Bernd UL; Vinzl, Alexander; Martinez, Takeshi

in User Centric Media (2010)

This paper presents the Shopping Assistant, the prototype of a platform which provides personalized advertisements, ontology based product recommendations and user support to find a (non–web) store ... [more ▼]

This paper presents the Shopping Assistant, the prototype of a platform which provides personalized advertisements, ontology based product recommendations and user support to find a (non–web) store selling desired products. The benefits are satisfied consumers, better advertising revenues and fine grained TV usage statistics which enable broadcasters to provide a more user centric program composition. [less ▲]

Detailed reference viewed: 30 (0 UL)
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See detailShopping hours and price competition
Inderst, Roman; Irmen, Andreas UL

in European Economic Review (2005), 49(5), 1105-1124

This Paper develops an argument explaining why retail prices may rise in response to the deregulation of opening hours. We make this point in a model of imperfect duopolistic competition. In a deregulated ... [more ▼]

This Paper develops an argument explaining why retail prices may rise in response to the deregulation of opening hours. We make this point in a model of imperfect duopolistic competition. In a deregulated market retailers view the choice of opening hours as a means to increase the degree of perceived product differentiation thus relaxing price competition. If the opportunity costs of the time spent on shopping are sufficiently high the equilibrium configuration has asymmetric shopping hours where one retailer stays open for longer than the other does. Both retailers charge higher prices than under regulation, and both are strictly better off.<P>(This abstract was borrowed from another version of this item.) [less ▲]

Detailed reference viewed: 86 (0 UL)
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See detailShort Circuit Calculation in Networks with a High Share of Inverter Based Distributed Generation
Margossian, Harag UL; Deconinck, Geert; Sachau, Jürgen UL

Scientific Conference (2014, June 24)

Conventional short circuit calculation programs do not consider the actual behavior of inverter based distributed generation (DG). Several techniques to consider them have been suggested in literature and ... [more ▼]

Conventional short circuit calculation programs do not consider the actual behavior of inverter based distributed generation (DG). Several techniques to consider them have been suggested in literature and are briefly described in this paper. A tool is developed with the combination of these techniques. The approach uses standard short circuit calculation tools and accommodates inverter based DG with different fault responses. The approach is evaluated and compared against other techniques using a realistic test distribution network model. [less ▲]

Detailed reference viewed: 118 (6 UL)
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See detailShort closed geodesics with self-intersections
Erlandsson, Viveka; Parlier, Hugo UL

E-print/Working paper (2016)

Our main point of focus is the set of closed geodesics on hyperbolic surfaces. For any fixed integer $k$, we are interested in the set of all closed geodesics with at least $k$ (but possibly more) self ... [more ▼]

Our main point of focus is the set of closed geodesics on hyperbolic surfaces. For any fixed integer $k$, we are interested in the set of all closed geodesics with at least $k$ (but possibly more) self-intersections. Among these, we consider those of minimal length and investigate their self-intersection numbers. We prove that their intersection numbers are upper bounded by a universal linear function in $k$ (which holds for any hyperbolic surface). Moreover, in the presence of cusps, we get bounds which imply that the self-intersection numbers behave asymptotically like $k$ for growing $k$. [less ▲]

Detailed reference viewed: 30 (1 UL)
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See detailShort communication: selection of thymidine analogue resistance mutational patterns in children infected from a common HIV type 1 subtype G source
Däumer, M.; Awerkiew, S.; Aragon, S. S. et al

in AIDS Research and Human Retroviruses (2010), 26(3), 275-278

In HIV-1, thymidine analogue mutations (TAMs) cluster in one of two groups (215Y, 41L, 210W, or 215F, 219E/Q), representing two independent mutational patterns (T215Y and T215F cluster, respectively). The ... [more ▼]

In HIV-1, thymidine analogue mutations (TAMs) cluster in one of two groups (215Y, 41L, 210W, or 215F, 219E/Q), representing two independent mutational patterns (T215Y and T215F cluster, respectively). The mechanisms by which these pathways are selected are not fully understood. To investigate possible factors driving the selection of the TAMs, we analyzed the TAM patterns with regard to the respective treatment, viral load, and HLA in 18 children all infected from a common source of HIV-1 clade G virus and initially treated with zidovudine. The HIV reverse transcriptase sequences of 14/18 children carried at least one TAM. At first sampling date, the T215Y-linked pattern was observed in five cases and the T215F cluster was seen in nine. During the follow-up period, three patients changed their patterns. Children treated with identical NRTI combinations at the first sampling date developed different pathways. Under AZT/d4T therapies, an association was found between the HLA B*13 (in combination with HLA DRB1*0701) and the mutation T215Y. The mutation T215Y reverted in three out of four patients who discontinued AZT/d4T treatment. We speculate that in the context of these subtype G viruses, the development of the T215Y mutation may be strongly disfavored whereas the presence of HLA B*13 may counteract this effect and permit its development. [less ▲]

Detailed reference viewed: 68 (0 UL)
See detailA short course on The Extended Finite Element Method
Fries, Thomas-Peter; Zilian, Andreas UL

Book published by CES University of Luxembourg - 1 (2013)

Detailed reference viewed: 282 (21 UL)
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See detailThe Short French Internet Addiction Test Adapted to Online Sexual Activities: Validation and Links With Online Sexual Preferences and Addiction Symptoms.
Wery, Aline; Burnay, Jonathan; Karila, Laurent et al

in Journal of sex research (2016), 53(6), 701-10

The goal of this study was to investigate the psychometric properties of a French version of the short Internet Addiction Test adapted to online sexual activities (s-IAT-sex). The French version of the s ... [more ▼]

The goal of this study was to investigate the psychometric properties of a French version of the short Internet Addiction Test adapted to online sexual activities (s-IAT-sex). The French version of the s-IAT-sex was administered to a sample of 401 men. The participants also completed a questionnaire that screened for sexual addiction (PATHOS). The relationships of s-IAT-sex scores with time spent online for online sexual activities (OSAs) and the types of OSAs favored were also considered. Confirmatory analyses supported a two-factor model of s-IAT-sex, corresponding to the factorial structure found in earlier studies that used the short IAT. The first factor regroups loss of control and time management, whereas the second factor regroups craving and social problems. Internal consistency for each factor was evaluated with Cronbach's alpha coefficient, resulting in .87 for Factor 1, .76 for Factor 2, and .88 for the global scale. Concurrent validity was supported by relationships with symptoms of sexual addiction, types of OSAs practiced, and time spent online for OSAs. The prevalence of sexual addiction (measured by PATHOS) was 28.1% in the current sample of self-selected male OSA users. The French version of the s-IAT-sex presents good psychometric properties and constitutes a useful tool for researchers and practitioners. [less ▲]

Detailed reference viewed: 90 (2 UL)
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See detailA short german physical-self-concept questionaire for elementary school children (PSCQ-C): Factorial validity and measurement invariance across gender.
Lohbeck, Annette; Tietjens, Maike; Bund, Andreas UL

in Journal of Sport Sciences (2016)

Research on children’s physical self-concept (PSC) is increasingly recognised as an important field ofpsychology. However, there is a lack of instruments suitable for younger children at elementary school ... [more ▼]

Research on children’s physical self-concept (PSC) is increasingly recognised as an important field ofpsychology. However, there is a lack of instruments suitable for younger children at elementary school age. In the present study, a short German 21-item Physical Self-Concept-Questionnaire for children (PSCQ-C) was tested measuring seven specific facets of elementary school children’s PSC (strength, endurance, speed, flexibility, coordination, physical appearance, global sport competence). A number of 770 elementary school children aged 8–12 years completed the PSCQ-C. Results showed good psychometric properties and high reliabilities of the seven scales. Confirmatory factor analysis revealed that the presumed 7-factor model fitted the data best compared to a global 1- and 2-factor model. Also, full measurement invariance was strongly established. Correlations among the seven scales were mainly moderate. Gender differences were suggestive of developmental trends that are consistent with prior studies. These results provide support that the PSCQ-C is a confidential instrument with sound psychometric properties measuring seven specific facets of elementary school children’s PSC. [less ▲]

Detailed reference viewed: 125 (6 UL)
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See detailShort Introduction to the Roofline Model
Besseron, Xavier UL

Presentation (2019, June 20)

Detailed reference viewed: 63 (5 UL)
Peer Reviewed
See detailA short knowledge scale for the measurement of crystallized intelligence
Schipolowski, S.; Wilhelm, O.; Schroeders, U. et al

Scientific Conference (2013, March)

Detailed reference viewed: 40 (0 UL)
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See detailShort measurements of personality – Validity and reliability of the GSOEP Big Five Inventory (BFI-S).
Hahn, E.; Gottschling, Juliana UL; Spinath, F.M.

in Journal of Research in Personality (2012), 46

Detailed reference viewed: 146 (1 UL)