In two studies, the relations between the experience and expression of anger and the Behavioral Inhibition System/Behavioral Approach System were investigated with self-report data. In a first study, our results replicated previous findings that trait anger relates positively to both BIS and BAS, and generalized these findings to a measure of trait anger based on contextual anger responses. In ...

This paper presents design thinking as an alternative approach to conduct research on collaborative learning with technology. The underlying premise of the paper is the need to adopt humancentered design principles in research and design of computer-supported collaborative tools. Two research results are described in order to discuss the possibilities and challenges of applying design methods f...

Résumé. Dans les systèmes DSMS (Data Stream Management Systems), les données en entrée sont infinies et les requêtes sur celles-ci sont actives tout le temps. Dans le but de satisfaire ces caractéristiques, le fenêtrage temporel est largement utilisée pour convertir le flux infini de données sous forme de relations finies. Mais cette technique est inadaptée pour de nombreuses applications émerg...

People live longer than ever before and the population of elderly is increasing. Many elderly visit day care centres in order to avoid loneliness and continuously look for new methods of entertainment. A possible new mean of entertainment can be found in the use of tablet applications. However, due to the physical and/or cognitive impairments of these elderly, most tablet applications are not a...

This paper presents the University of Amsterdam’s participation in the TREC 2015 Contextual Suggestion Track. Creating e↵ective profiles for both users and contexts is the main key to build an e↵ective contextual suggestion system. To address these issues, we investigate building users’ and groups’ profiles for e↵ective contextual personalization and customization. Our main aim is to answer the...

Firms that sell via a direct channel and via indirect channels have to decide whether to allow third-party sellers to use the trademarked brand name of the product in their advertising. This question has been particularly controversial for advertising on search engines. In June 2009, Google started allowing any third-party reseller for a product to use a trademark, such as ‘Doubletree,’ in the ...

Many pattern recognition problems in the real world are complicated by noise and imperfect data. It is widely accepted that recognition of such data would be greatly aided by the use of contextual sensibility of the classification. One possible solution to this problem would require a multi-layered pattern classifying network with feedback mechanisms. Recognition of this possibility has led to ...

Despite evidence that men are typically perceived as more appropriate and effective than women in leadership positions, a recent debate has emerged in the popular press and academic literature over the potential existence of a female leadership advantage. This meta-analysis addresses this debate by quantitatively summarizing gender differences in perceptions of leadership effectiveness across 9...

This article explores the design and execution of an intentionally public information ecology by focusing on three of the primary communication activities (blogging, videos, and microblogging) taking place immediately before, during, and after a small international conference of digital media professionals. Drawing on an activity theory framework for analyzing data collected via an exploratory ...

This research presents the findings of contextual interviews, visitor survey and behavioural study that were carried out in Indian museums. It originates from the hypothesis that the museum exhibits are unable to express their relevance, historical significance and related knowledge to satisfy the curiosity of visitors. Our objective is to identify the cognitive needs of museum visitors and the...