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See detailHigher Education Systems and Institutions, Luxembourg
Harmsen, Robert UL; Powell, Justin J W UL

in Shin, J.C.; Teixeira, P. (Eds.) Encyclopedia of International Higher Education Systems and Institutions (in press)

Bordered by Belgium, France, and Germany, Luxembourg is one of the three main seats of the European Union’s institutions. The Grand Duchy of Luxembourg sits at the crossroads between Europe’s Germanic and ... [more ▼]

Bordered by Belgium, France, and Germany, Luxembourg is one of the three main seats of the European Union’s institutions. The Grand Duchy of Luxembourg sits at the crossroads between Europe’s Germanic and Francophone language communities. The country has experienced remarkable migratory flows, resulting in an ethnically hyper-diverse and multilingual population. Reflecting this cultural diversity, the educational system at all levels emphasizes language learning. Historically an agrarian society, a century ago it developed a very strong steelmaking industry and over the past decades has witnessed extraordinary growth in its financial services sector. Established to broaden the economic bases of the country, thus reducing overreliance on the steel and banking industries, yet against considerable pecuniary and ideological resistance, the national flagship University of Luxembourg (UL) was founded in 2003 upon initiative of a small group of elite decisionmakers. As a private, government-dependent institution (établissement public) directed by a Board of Governors (Conseil de Gouvernance), the university’s major funding is provided by the state, although its third-party funding has increased rapidly and substantially. Ironically, while spatial mobility is everywhere supported, Luxembourg has invested considerable capital and strategic planning in establishing its own national university. It aims to compete globally by concentrating its intellectual and financial resources and by building on the country’s strengths and priorities. The state took this ambitious step in scientific capacity-building in founding a research-oriented university, in so doing also providing a stay-at-home alternative for Luxembourg’s youth, traditionally educated abroad. The long-standing custom of educating elites in other countries was ostensibly justified by the establishment of cosmopolitan, Europe-wide networks. Today, rising international competition and supranational coordination have increased pressure on Luxembourg to grow its higher education system and thus also foster educational and scientific innovation. The University provides a means to diversify the economy and to integrate citizens from diverse cultural background, while the polity remains dominated by local elites. Oriented towards the Grand Duchy’s unique context—small size, but simultaneously flourishing center of European governance and international business—the University was founded upon the principles of internationality, multilingualism, and interdisciplinarity. [less ▲]

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See detailDomain-Specificity of Need for Cognition Among High School Students
Keller, Ulrich UL; Strobel, Anja; Martin, Romain UL et al

in European Journal of Psychological Assessment (in press)

Need for Cognition (NFC) is increasingly being investigated in educational research. In contrast to other non-cognitive constructs in this area, such as academic self-concept and interest, NFC has ... [more ▼]

Need for Cognition (NFC) is increasingly being investigated in educational research. In contrast to other non-cognitive constructs in this area, such as academic self-concept and interest, NFC has consistently been conceptualized as domain-general. We employed structural equation modelling to address the question of whether NFC can be meaningfully and gainfully conceptualized as domain-specific. To this end, we developed a domain-specific 20-item NFC scale with parallel items for Science, Mathematics, German, and French. Additionally, domain-general NFC was assessed with five domain-general items. Using a cross-sectional sample of more than 4500 Luxembourgish 9th graders, we found that a nested-factor model incorporating both a general factor and domain-specific factors better accounted for the data than a single- factor or a correlated-factor model. However, the influence of the general factor was markedly stronger than in corresponding models for academic self-concept and interest. When controlling for the domain-specific factors, only Mathematics achievement was significantly predicted by the domain-general factor, while all achievement measures (Mathematics, French, and German) were predicted by the corresponding domain-specific factor. The nested domain-specific NFC factors were clearly empirically distinguishable from first-order domain-specific interest factors. [less ▲]

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See detailIntroducing automated GUI testing and observing its benefits: an industrial case study in the context of law-practice management software
Garousi, Vahid UL; Yıldırım, Erdem

in Proceedings of ACM/IEEE International Symposium on Empirical Software Engineering and Measurement (ESEM) (in press)

Motivated by a real-world industrial need in the context of a large IT solutions company based in Turkey, the authors and their colleagues developed and introduced automated test suites for GUI testing of ... [more ▼]

Motivated by a real-world industrial need in the context of a large IT solutions company based in Turkey, the authors and their colleagues developed and introduced automated test suites for GUI testing of two large-scale law-practice management software (comprising of 414 and 105 KLOC). We report in this paper our experience in developing and introducing a set of large automated test suites (more than 50 KLOC in total), using best practices in state-of-the art and –practice, and to report its observed benefits by conducting cost-benefit analysis in the specific industrial context. The project was conducted based on the principles of case-study and “action research” in which the real industrial needs drove the research. Among the best practices that we used are the followings: (1) the page-object test pattern, (2) modularity in test code, (3) creating test-specific libraries, and (4) using systematic guidelines to decide when and what (test cases) to automate. To assess the cost-benefit and Return On Investment (ROI) of test automation, we followed a hybrid measurement approach to assess both the quantitative and qualitative (intangible) benefits of test automation. The empirical findings showed that the automated GUI testing approach has indeed benefitted the test and QA team in the company under study and automation has been highly welcome by the test engineers. By serving as a success story and experience report in development and introduction of automated test suites in an industrial setting, this paper adds to the body of evidence in this area and it aims at sharing both technical (e.g., using automated test patterns) and process aspects (e.g., test process improvement) of our project with other practitioners and researchers with the hope of encouraging more industry-academia collaborations in test automation. [less ▲]

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See detailOn the Risk of Tool Over-tuning in Runtime Verification Competitions
Bianculli, Domenico UL; Krstic, Srdan

in Proceedings of RV-CUBES 2017: an International Workshop on Competitions, Usability, Benchmarks, Evaluation, and Standardisation for Runtime Verification Tools (in press)

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See detailCultures of care in aging
Boll, Thomas UL; Ferring, Dieter UL; Valsiner, Jaan

Book published by Information Age Publishing (in press)

Care for elderly persons has many facets and is influenced by many factors of the care-dependent person, the care giver(s) and the micro-, and macro-social context. A co-operation of multiple disciplines ... [more ▼]

Care for elderly persons has many facets and is influenced by many factors of the care-dependent person, the care giver(s) and the micro-, and macro-social context. A co-operation of multiple disciplines is required to better understand phenomena of elder care and to act adequately in this field. This is even more urgent given the increasing population aging and the impending gaps between demand and supply of care. The present book provides a first substantive integration of knowledge from geropsychology, other gerosciences, and cultural psychologies to reach these goals —through a multi-disciplinary and international cast of authors. Macro-social context—including demographic, historical, political, normative, and other cultural factors—turned out to open and limit the available options for individual care giving and receipt and shapes how these issues are experienced by the participants in elder care. Elder care is shown to be far more complex than previously thought, because its consequences extend beyond single care givers to multigenerational caring families. Thinking, feeling and acting in relation to care dependency, caregiving and care receipt emerged as being influenced by multiple individual and social level factors. Future issues of elder care are seen as being shaped to a large extent by macro level factors such as population aging, social trends in job and family life, and development of assistive technologies. All this has far reaching implications for ensuring quality of care and the life quality on part of care recipients and care providers and for the coherence of social communities. [less ▲]

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See detailAutomatically Repairing Web Application Firewalls Based on Successful SQL Injection Attacks
Appelt, Dennis; Panichella, Annibale UL; Briand, Lionel UL

in The 28th IEEE International Symposium on Software Reliability Engineering (ISSRE) (in press)

Testing and fixing WAFs are two relevant and complementary challenges for security analysts. Automated testing helps to cost-effectively detect vulnerabilities in a WAF by generating effective test cases ... [more ▼]

Testing and fixing WAFs are two relevant and complementary challenges for security analysts. Automated testing helps to cost-effectively detect vulnerabilities in a WAF by generating effective test cases, i.e., attacks. Once vulnerabilities have been identified, the WAF needs to be fixed by augmenting its rule set to filter attacks without blocking legitimate requests. However, existing research suggests that rule sets are very difficult to understand and too complex to be manually fixed. In this paper, we formalise the problem of fixing vulnerable WAFs as a combinatorial optimisation problem. To solve it, we propose an automated approach that combines machine learning with multi-objective genetic algorithms. Given a set of legitimate requests and bypassing SQL injection attacks, our approach automatically infers regular expressions that, when added to the WAF's rule set, prevent many attacks while letting legitimate requests go through. Our empirical evaluation based on both open-source and proprietary WAFs shows that the generated filter rules are effective at blocking previously identified and successful SQL injection attacks (recall between 54.6% and 98.3%), while triggering in most cases no or few false positives (false positive rate between 0% and 2%). [less ▲]

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See detailSafety-aware Location Privacy in VANET: Evaluation and Comparison
Emara, Karim Ahmed Awad El-Sayed UL

in IEEE Transactions on Vehicular Technology (in press)

VANET safety applications broadcast cooperative awareness messages (CAM) periodically to provide vehicles with continuous updates about the surrounding traffic. The periodicity and the spatiotemporal ... [more ▼]

VANET safety applications broadcast cooperative awareness messages (CAM) periodically to provide vehicles with continuous updates about the surrounding traffic. The periodicity and the spatiotemporal information contained in these messages allow a global adversary to track vehicle movements. Many privacy schemes have been proposed for VANET, but only few schemes consider their impact on safety applications. Also, each scheme is evaluated using inconsistent metrics and unrealistic vehicle traces, which makes comparing the actual performance of different schemes in the wild more difficult. In this paper, we aim to fill this gap and compare different privacy schemes not only in terms of the privacy gained but also their impact on safety applications. A distortion-based privacy metric is initially proposed and compared with other popular privacy metrics showing its effectiveness in measuring privacy. A practical safety metric which is based on Monte Carlo analysis is then proposed to measure the QoS of two safety applications: forward collision warning and lane change warning. Using realistic vehicle traces, six state-of-the-art VANET privacy schemes are evaluated and compared in terms of the proposed privacy and safety metrics. Among the evaluated schemes, it was found that the coordinated silent period scheme achieves the best privacy and QoS levels but fully synchronized silence among all vehicles is a practical challenge. The CAPS and CADS schemes provide a practical compromise between privacy and safety since they employ only the necessary silence periods to prevent tracking and avoid changing pseudonyms in trivial situations. [less ▲]

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See detailA systematic review of self-care assistive technologies for aging population
Abrilahij, Afsaneh UL; Boll, Thomas UL

in Boll, Thomas; Ferring, Dieter; Valsiner, Jaan (Eds.) Cultures of care in aging (in press)

A gradual decline in functional and mental capacity as well as a growing risk of care dependency constitute major concerns of life in old age. These should become larger and more urgent in future, because ... [more ▼]

A gradual decline in functional and mental capacity as well as a growing risk of care dependency constitute major concerns of life in old age. These should become larger and more urgent in future, because the number of people 80+ is projected to more than double from 2010 to 2050 at least in EU and OECD countries. On the other side, there is a strong desire of older people, their relatives and policy makers to maintain the autonomy in old age as long as possible. In reaction to this, there have been strong social policy recommendations to develop and promote the use of assistive technologies (ATs). Whereas systematic reviews already exist for several other kinds of ATs, reviews about self-care ATs are still missing. Based on systematic literature searches in PsycINFO, MEDLINE, and Google Scholar databases 203 papers were identified of which 12 were included according to our selection criteria. The methodological quality of all the reviewed studies is evaluated. We reviewed findings on indicators of independent living as efficiency criteria as well as evidence about facilitators and barriers of using these technologies. Self-care ATs turned out to be efficient with respect to reduced care hours and increased independence level. The actual use of these ATs was associated with personal, contextual, and device factors. Lack of randomized control trial studies and a need for further research about ATs in several domains of self-care activities is revealed. Based on the findings of the current review, we generate recommendations for future research. [less ▲]

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See detailCare in aging: Cross-fertilization within and between Geropsychology, other gerosciences, and Cultural Psychology
Boll, Thomas UL; Ferring, Dieter UL; Valsiner, Jaan

in Boll, Thomas; Ferring, Dieter; Valsiner, Jaan (Eds.) Cultures of care in aging (in press)

Care for elderly persons is multifaceted and embedded in a rich socio-ecological context of individual, micro-, and macro-social factors. This complexity requires multidisciplinary perspectives to better ... [more ▼]

Care for elderly persons is multifaceted and embedded in a rich socio-ecological context of individual, micro-, and macro-social factors. This complexity requires multidisciplinary perspectives to better understand phenomena of elder care and to act successfully in this field. In the final chapter of a multidisciplinary book with contributions from geropsychology, other gerosciences, and cultural psychology the editors draw conclusions about major topics, new insights, and further implications for research and practice. The conclusions refer to four domains. First, the macro-social context—including demographic, historical, political, normative, and other cultural factors—opens and limits the available options for individual care giving and receipt and shapes how these issues are experienced by the participants. Second, elder care at the individual and family level is far more complex than previously thought, due to differentiated individual and social care preferences and due to consequences extending beyond single caregivers to multigenerational caring families. Third, processes involved in formal and informal care turned out to be rather differentiated: Understanding, emotional responding, motivation and acting towards suffering, care dependency and caregiver burden are influenced by multiple individual and social level factors. Fourth, future issues of elder care are shaped by macro level factors such as population aging, social trends in job and family life, and technological developments with implications for ensuring care quality, care staff, culturally sensitive care, and assistive technologies. Cultural psychology emerged as a valuable partner of the gerosciences by contributing essentially to a deeper understanding of the aforementioned issues. [less ▲]

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See detailCulture in the Act of Caring: Bringing Geropsychology, other gerosciences, and Cultural Psychology together
Boll, Thomas UL; Ferring, Dieter UL; Valsiner, Jaan

in Boll, Thomas; Ferring, Dieter; Valsiner, Jaan (Eds.) Cultures of care in aging (in press)

In the introduction of a multidisciplinary book on the role of culture in elder care the editors set the stage for a substantive integration of contributions from geropsychology, other gerosciences, and ... [more ▼]

In the introduction of a multidisciplinary book on the role of culture in elder care the editors set the stage for a substantive integration of contributions from geropsychology, other gerosciences, and cultural psychology. The authors present arguments for a life-span developmental perspective on care for the elderly and extend this to geropsychology as subsection of life-span developmental psychology. They further emphasize that these disciplines consider to some extent the role of cultural and other contextual factors and that other gerosciences specialized on historical, political, health-and nursing-related aspects of elder care can further supplement this effort. Then three major streams of cultural psychology are mentioned which are particularly relevant to topics of caring: Dialogical Self Theory, Theory of Social Representations, and Cultural Psychology of Semiotic Dynamics. The authors conclude that an increasing population aging and growing gaps between demand and supply of care create a serious practical need for an integration of geropsychology, other gerosciences, and cultural psychologies to achieve a better understanding of the individual, interpersonal, and macro social processes involved in elder care. [less ▲]

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See detailScientific and legal concepts of care dependency: Role for understanding, emotional responding, and acting in the field of elder care
Boll, Thomas UL; Ferring, Dieter UL

in Boll, Thomas; Ferring, Dieter; Valsiner, Jaan (Eds.) Cultures of care in aging (in press)

In this chapter, we analyze scientific and legal concepts of care dependency and explore their roles for understanding, emotional responding, and acting of various participants in the field of elder care ... [more ▼]

In this chapter, we analyze scientific and legal concepts of care dependency and explore their roles for understanding, emotional responding, and acting of various participants in the field of elder care. First, two comprehensive concepts from the nursing sciences are contrasted. Then we compare a scientific and two legal concepts (restrictive vs. inclusive) of care dependency from the German long-term care (LTC) system, the last of which regulate older persons´ access to LTC benefits. Here, we consider their different implications for the risk of unmet psychological, social, and temporary care needs. Next, we examine the theoretical and methodological roles of different care dependency concepts for assessment as well as the analysis of prevalence, antecedents, consequences, and the management of care dependency. Following this, we explore possible functions of care dependency concepts as cognitive mediators of various agents’ activities related to elder care, which opens new topics for further research. Among these, we include the ascription of care dependency by various actors, older people´s self-presentation, and family carers´ presentation and LTC administrators´ evaluation of an older person´s care dependency. Further issues addressed are the education of professional care workers and professionals´ provision of elder care. Here, special attention is devoted to the implications of a shift from a restrictive to a more inclusive legal concept of care dependency as recently happened in Germany. Finally, we discuss the implications of inclusive legal concepts of care dependency for the improvement of elder care quality [less ▲]

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See detailMachine learning and natural language processing on the patent corpus: data, tools, and new measures
Balsmeier, Benjamin UL; Li, Guan-Cheng; Assaf, Mohamad et al

in Journal of Economics & Management Strategy (in press)

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See detailTeachers’ assessments of students’ achievements: The ecological validity of studies using case vignettes
Krolak-Schwerdt, Sabine UL; Hörstermann, Thomas UL; Glock, Sabine et al

in Journal of Experimental Education (in press)

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See detailConvergence of credit structure around the world
Leon, Florian UL

in Economic Modelling (in press)

This paper studies convergence of credit structure worldwide. We hand-collect data on credit to household and firm credit for 143 countries over the period 1995-2014. First, we separately document the ... [more ▼]

This paper studies convergence of credit structure worldwide. We hand-collect data on credit to household and firm credit for 143 countries over the period 1995-2014. First, we separately document the existence of a convergence process of total credit, household credit and firm credit, respectively. Second, we find that convergence of household credit occurs faster than firm credit, inducing a process of convergence of the share of household credit to total credit. Third, convergence occurs faster in low-income countries and in countries with a lower initial level of total credit but slows down after the 2008 global financial crisis. Finally, our data investigation does not support the idea that convergence is driven by changing conditions in developing countries. [less ▲]

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See detailObituary: Dieter Ferring (1958-2017)
Boll, Thomas UL; Albert, Isabelle UL; Lang, Frieder R.

in GeroPsych: Journal of Gerontopsychology and Geriatric Psychiatry (in press)

Memorializes Dieter Ferring, who contributed to life-span developmental psychology, geropsychology, and cultural psychology in academic science, teaching, and professional practice. His life work centered ... [more ▼]

Memorializes Dieter Ferring, who contributed to life-span developmental psychology, geropsychology, and cultural psychology in academic science, teaching, and professional practice. His life work centered on on life circumstances that included threats to people's well-being and on identifying and implementing solutions for such aversive conditions. His scientific approach was characterized by analysing phenomena in their micro and macro context, by interdisciplinarity, by emphasis on cognitive and semiotic mediation, and by using mixed-method approaches to data collection and analyses. Dieter Ferring had been much engaged in productive cooperations with researchers from other countries in Europe and in disseminating his insights and findings to study programs beyond his own field as well as to the general public. interests were in [less ▲]

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See detailTemPsy-Check: a Tool for Model-driven Trace Checking of Pattern-based Temporal Properties
Dou, Wei UL; Bianculli, Domenico UL; Briand, Lionel UL

in Proceedings of RV-CUBES 2017: an International Workshop on Competitions, Usability, Benchmarks, Evaluation, and Standardisation for Runtime Verification Tools (in press)

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See detailEmotionally laden impulsivity interacts with affect in predicting addictive use of online sexual activity in men
Wéry, Aline; Deleuze, Jory; Canale, Natale et al

in Comprehensive Psychiatry (in press)

The interest in studying addictive use of online sexual activities (OSA) has grown sharply over the last decade. Despite the burgeoning number of studies conceptualizing the excessive use of OSA as an ... [more ▼]

The interest in studying addictive use of online sexual activities (OSA) has grown sharply over the last decade. Despite the burgeoning number of studies conceptualizing the excessive use of OSA as an addictive disorder, few have tested its relations to impulsivity, which is known to constitute a hallmark of addictive behaviors. To address this missing gap in the literature, we tested the relationships between addictive OSA use, impulsivity traits, and affect among a convenience sample of men (N = 182; age, M = 29.17), building upon a theoretically driven model that distinguishes the various facets of impulsivity. Results showed that negative urgency (an impulsivity trait reflecting the tendency to act rashly in negative emotional states) and negative affect interact in predicting addictive OSA use. These results highlight the pivotal role played by negative urgency and negative affect in addictive OSA use, supporting the relevance of psychological interventions that focus on improving emotional regulation (e.g., to reduce negative affect and learn healthier coping strategies) to mitigate excessive use of OSA. [less ▲]

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See detailA Multiscale DEM-VOF Method for the simulation of three-phase flows
Pozzetti, Gabriele UL; Peters, Bernhard UL

in International Journal of Multiphase Flow (in press)

A novel multiscale approach for three-phase flows is presented. The goal of the proposed method is to solve arbitrary three-phase flow configurations in a computationally efficient way, and in particular ... [more ▼]

A novel multiscale approach for three-phase flows is presented. The goal of the proposed method is to solve arbitrary three-phase flow configurations in a computationally efficient way, and in particular taking into account the effects of different length scales while sharply reducing the computational burden. This is particularly important in chemical, environmental, and process engineering, where large-scale quantities are normally of interest, but small-scale dynamics cannot be neglected. The method is based on the definition of two different length scales: the bulk scale, and the fluid fine scale. A dual-grid approach is adopted in order to resolve the bulk scale with information from the fluid fine scale. It is shown that the described method succeeds in delivering more accuracy than a standard approach based on the volume averaging technique, still, it remains suitable for the solution of real interest problems. The method is shown to successfully satisfy experimental results presented in the literature. Examples of three-phase flows simulations are provided to show how the proposed numerical approach can describe the physics of particle-laden, free surface flows with competitive computational cost. It is shown how the proposed method can naturally extend the DEM-VOF method to the presence of complex interface dynamics. [less ▲]

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