Working towards an international consensus on criteria for assessing internet gaming disorder: a critical commentary on Petry et al. (2014).

in Addiction (Abingdon, England) (2016), 111(1), 167-75

Working with Deep Generative Models and Tabular Data Imputation

Scientific Conference (2020, July 17)

Datasets with missing values are very common in industry applications. Missing data typically have a negative impact on machine learning models. With the rise of generative models in deep learning, recent ... [more ▼]

Datasets with missing values are very common in industry applications. Missing data typically have a negative impact on machine learning models. With the rise of generative models in deep learning, recent studies proposed solutions to the problem of imputing missing values based various deep generative models. Previous experiments with Generative Adversarial Networks (GANs) and Variational Autoencoders (VAEs) showed promising results in this domain. Initially, these results focused on imputation in image data, e.g. filling missing patches in images. Recent proposals addressed missing values in tabular data. For these data, the case for deep generative models seems to be less clear. In the process of providing a fair comparison of proposed methods, we uncover several issues when assessing the status quo: the use of under-specified and ambiguous dataset names, the large range of parameters and hyper-parameters to tune for each method, and the use of different metrics and evaluation methods. [less ▲]

“Working with” as a methodological stance: Collaborating with students in teaching, writing, and research

in International Journal of Qualitative Studies in Education : QSE (2011), 24(3), 343-361

Using critical ethnography guided by cultural sociology, this manuscript examines the role of “co” in teacher education; coresearching, coteaching, and cogenerating dialogue. The authors are a pre-service ... [more ▼]

Using critical ethnography guided by cultural sociology, this manuscript examines the role of “co” in teacher education; coresearching, coteaching, and cogenerating dialogue. The authors are a pre-service teacher and college instructor, and through our multiple perspectives and positionings we explore how collaboration served to dismantle teacher-student hierarchies and replaced them with complex relationships mediated by polysemic approaches to research. Pushing against traditional ideologies, we utilize a multi-voiced approach to writing as we present our experiences and interpretations of data relative to the possibilities of collaboration in education and research. As we analyze our role in collaborative endeavors, we ask: How can we find ways to work across and around hierarchical institutional structures when working with our students? What are ways that we can examine our individual lived experiences together, and is it possible to work with each other to develop identities as teachers that are not predicated on power differentials? [less ▲]

The Workings of Scientific Communities

Report (2001)

No abstract is available for this item.

Workplace attachment, workspace appropriation, and job satisfaction

in Psyecology (2013), 4(1), 39-65

The aim of this paper is to clarify the relationship between psycho-environmental variables and work satisfaction by comparing them in a single model of psycho-organizational variables whose impact on ... [more ▼]

The aim of this paper is to clarify the relationship between psycho-environmental variables and work satisfaction by comparing them in a single model of psycho-organizational variables whose impact on satisfaction at work is well known. One hundred and twelve French supermarket workers completed a questionnaire composed of indicators assessing: (a) job satisfaction (ESVP and M.S.Q), (b) psycho-environmental variables (EALT, A-E scale, and a questionnaire about workspace appropriation and workplace attachment), and (c) psycho-organizational variables using some of Karasec’s control scales, Geurts’ SWING, and Meyer, Allen, and Smith’s organizational commitment scale. Regression analysis showed that the psycho-environmental variables were predictors of job satisfaction, some being more relevant predictors of the MSQ and particularly of the ESVP than the psycho-organizational variables. These results contribute to the current debate on the operationalization of the concept of job satisfaction. [less ▲]

Workplace bullying: Validation of a measurement and the role of competition, passive avoidant leadership style, psychological contract violation and basic need frustration.

Doctoral thesis (2018)

Workplace bullying, mobbing or harassment describe a situation where an employee is the target of systematic mistreatment by other organizational members (i.e., colleagues, supervisors, subordinates) that ... [more ▼]

Workplace bullying, mobbing or harassment describe a situation where an employee is the target of systematic mistreatment by other organizational members (i.e., colleagues, supervisors, subordinates) that may cause severe social, psychological and psychosomatic problems in the targeted employee. Since the appearance of the book “The harassed worker” by Brodsky (1976) and initial studies by Heinz Leymann (1986, 1990), workplace bullying research has developed into a huge and still massively growing research area that is conducted all over the globe. Especially, when related concepts are considered, a vast amount of studies have researched prevalence, risk factors, consequences, and, very recently, psychological mechanisms of workplace bullying exposure. A literature review revealed that existing workplace bullying exposure self-report inventories exhibit some weaknesses. Therefore, the first study (Chapter 2) aimed to develop a new short scale, the Luxembourg Workplace Mobbing Scale (LWMS) in three different language versions (i.e., Luxembourgish, French, German). Furthermore, it investigated the psychometric properties and the validity of this scale and examined if the three language versions exhibit measurement invariance. The LWMS revealed good psychometric properties in terms of its internal consistency and its factor structure. Furthermore, metric and partial scalar invariance across the three language versions could be established. Initial validation tests revealed high criterion validity of the LWMS. In line with recent workplace bullying exposure research, the LWMS was meaningfully linked with other working factors and measures of psychological health. The second study (Chapter 3) aimed to test the LWMS’s factor structure and measurement invariance across possible risk groups of bullying exposure (i.e., gender, age, and occupational groups). Moreover, based on recent theories and findings on workplace bullying the study aimed to further elucidate the LWMS’s nomological net with relevant psychological (i.e., psychological well-being, work engagement, sleeping hours, suicidal thoughts) and physiological health measures (i.e., physiological health problems, alcohol and smoking consumption, body mass index) as well as with important organizational criteria (i.e., work performance, turnover intention, absenteeism) and with self-labeling victim status. Evaluation of different measurement invariance models confirm metric and (partial) scalar invariance across all compared groups. Neither age, gender, nor the most frequent areas of occupation in Luxembourg represent important risk factors for workplace bullying exposure. Regarding criterion validity, with the exceptions of alcohol and smoking consumption, all proposed psychological and physiological health measures as well as organizational criteria are meaningfully associated with the LWMS. In summary, the LWMS is especially useful, when the identification of workplace bullying exposure risk groups or cross-cultural research is of concern. The third study (Chapter 4) aimed to test specific organizational risk factors of the occurrence of workplace bullying. Specifically, competition and passive avoidant leadership style were tested as risk factors of workplace bullying (exposure and perpetration) assessed with two assessment methods (behavioral experience and self-labeling method). Consistent with theoretical reasoning and prior research, results demonstrated that competition as well as passive avoidant leadership style are important risk factors of workplace bullying exposure. Moreover, results showed that the same effects showed up for perpetration. Even more interesting, passive avoidant leadership style acted as a moderator on the effect of competition on workplace bullying exposure. In line with theory, competition is stronger related to workplace bullying exposure, when passive avoidant leadership is high. Thus, passive avoidant leadership style can be considered a disruptive factor reinforcing the negative association with competition. Regarding workplace bullying perpetration the same moderation effect was only found for the self-labeled assessment method. The fourth study (Chapter 5) aimed to identify different psychological mechanisms (i.e., psychological contract violation and frustration of basic needs) that link being target of workplace bullying and health, attitudinal and behavioral outcomes. Furthermore, their relative impact and importance on different outcomes were highlighted. Psychological contract violation was an important mediator for decreased job satisfaction and higher turnover intentions, whereas frustration of autonomy mediated the effect between workplace bullying exposure and increased levels of burnout, frustration of competence mediated the effect of bullying exposure on decreased work performance and frustration of relatedness was strongly associated with decreased well-being and vigor. Results showed that feelings of psychological contract violation and frustration of basic needs accounted for unique variation in many outcome variables, pointing to the individual contribution of both psychological mechanisms. The present thesis deepens our understanding of the organizational circumstances under which workplace bullying is more likely and the psychological mechanisms that link the bullying exposure with several outcomes. These results can guide possible prevention and intervention strategies. [less ▲]

Workplace Productivity and Management Practices

Book published by Emerald (2021)

Workshop 'Strategies for Using Digital Sources in the Classroom

Presentation (2018, October 26)

Given the current abundance of available digital resources for historians (retro-digitized as well as born-digital materials), there is an urgent question of how to engage with these resources in the ... [more ▼]

Given the current abundance of available digital resources for historians (retro-digitized as well as born-digital materials), there is an urgent question of how to engage with these resources in the history classroom. How do we teach the differences between "online" and "offline" materials and they ways in which historians can approach them? How do we deal with issues of decontextualization and the changes brought about in historical research practices by working with digital objects? The SourceLab project tackles these issues by letting students create digital editions of historical artefacts and thereby engage them in the making of history. The Ranke.2 project provides lessons that teaches students what digital source criticism is. In this workshop we will discuss in what ways teachers use digital resources in the classroom, and what strategies, if any, they use to sensitize their students to the specificities of online materials as opposed to those found in the archive. The outcome could be a working paper which discusses the pros and cons of various approaches. [less ▲]

Workshop and hands on session: Luxembourg and the European Institutions - where all began

Diverse speeches and writings (2018)

The Treaty establishing the European Coal and Steel Community (ECSC) signed in Paris on 18 April 1951, set up a number of institutions to carry out its activities: a High Authority, assisted by a ... [more ▼]

The Treaty establishing the European Coal and Steel Community (ECSC) signed in Paris on 18 April 1951, set up a number of institutions to carry out its activities: a High Authority, assisted by a Consultative Committee; a Common Assembly; a Special Council of Ministers; a Court of Justice. After the signing of the ECSC Treaty, an interim committee instructed to submit proposals concerning seats of the institutions, was unable to reach agreement. Many cities were suggested, such as Liège, Strasbourg, Turin or Saarbrücken. To break the deadlock in the negotiations, during the night of 24 to 25 July 1952 the Luxembourg Foreign Minister, Joseph Bech, made the proposal that the ECSC High Authority be provisionally located in Luxembourg. ‘Provisional’ became ‘definitive’, and the seat of the High Authority remained in Luxembourg until the Merger Treaty combined the executive bodies in 1965. On 10 August 1952, with the inaugural session of the High Authority, Luxembourg was the place where it all began. During our lecture at the Maison Robert Schuman, birthplace of Robert Schuman, one of the founding fathers of the European Union, we will present the country’s role in the European integration process during the 1950’s. The workshop is dedicated to discuss the different narratives on Europe’s history from a non-European perspective. The fieldtrip goes from the Maison Robert Schuman in Clausen to the Court of Justice of the European Union, which constitutes the judicial authority of the EU and, in cooperation with the courts and tribunals of the Member States, ensures the uniform application and interpretation of EU law. [less ▲]

Workshop Introduction: Computer Entertainment in Cars and Transportation

in Conference on Advances in Computer Entertainment (2013, November)

This workshop deals with the potential that entertainment systems and games hold for the transportation context. Travelling by car, bus, plane or by foot can be frustrating and full of negative ... [more ▼]

This workshop deals with the potential that entertainment systems and games hold for the transportation context. Travelling by car, bus, plane or by foot can be frustrating and full of negative experiences, but also holds great potential for innovative entertainment application. New off the shelf technology offers great potential beyond old-fashioned rear seat entertainment systems with the sole purpose of keeping kids quiet. The richness of contextual factors and social situations have so far not sufficiently been exploited, which is why this workshop aims at discussing potentials for gaming in transportation. [less ▲]