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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 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 ▲]

Detailed reference viewed: 38 (9 UL)
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See detailHochschul- und Berufsbildung in Europa
Powell, Justin J W UL

in Hönig, Barbara; Bach, Maurizio (Eds.) Handbuch Europasoziologie (in press)

Neben Globalisierung und Digitalisierung haben Fragen der Meritokratie und (Aus-)Bildung einen festen Platz im öffentlichen, politischen und privaten Diskurs, denn wir leben in Europa zunehmend in ... [more ▼]

Neben Globalisierung und Digitalisierung haben Fragen der Meritokratie und (Aus-)Bildung einen festen Platz im öffentlichen, politischen und privaten Diskurs, denn wir leben in Europa zunehmend in Bildungsgesellschaften. Die Zeit, die wir in Bildungsorganisationen verbringen, wird immer länger, der absolvierte Fächerkanon wird immer breiter und die Bildungsabschlüsse, die wir erwerben, werden immer höher (vgl. Leemann et al. 2016). Zugleich steigen mit dem Übergang von der Industrie- zur modernen Dienstleistungsgesellschaft die Ansprüche an fachliche und soziale Kompetenzen auf dem Arbeitsmarkt (vgl. Mayer und Solga 2008). Mit dem Wandel der Wirtschaftsstrukturen hin zu wissensbasierten Tätigkeiten, der zunehmenden Digitalisierung der Arbeitswelt, den demographischen Veränderungen und dem in diesem Zusammenhang befürchteten Fachkräftemangel stehen europäische Gesellschaften vor der Aufgabe ihre Bildungssysteme zu reformieren. Auf europäischer, nationaler wie auch regionaler und lokaler Ebenen versuchen Bildungspolitiker den Zugang zu Hochschul- und Berufsbildung und lebenslanges Lernen für immer mehr Mitglieder jeder Kohorte zu ermöglichen. Alle müssen sich mehr denn je um Bildungszertifikate bemühen, weil diese für erfolgreiche Berufskarrieren unabdingbar geworden sind. Zugleich gibt es in diesem Wettbewerb klare Gewinner und Verlierer, denn diejenigen ohne Zugang zu (Aus-)Bildung, vor allem ehemalige Sonderschüler und Hauptschüler, werden zunehmend marginalisiert (vgl. Pfahl 2011; Protsch 2014; Solga 2005). Bildung und die durch sie erworbenen und ausgewiesenen Fähigkeiten gelten in unserer Gesellschaft als Innovationspotenzial, als zentrale Voraussetzungen für wirtschaftlichen Erfolg, gesellschaftlichen Wohlstand sowie soziale und politische Teilhabe. Statt der sozialen Platzierung entlang zugeschriebener Merkmale der Herkunft (wie Schicht, Geschlecht, Rasse, Ethnie) soll die erworbene Leistung, signalisiert in Schulnoten, Bildungsabschlüssen, Qualifikationen sowie Bildungskarrieren insgesamt, den legitimen Zugang zu Positionen, insbesondere höheren sozialen Positionen bestimmen. Insofern ist es nicht verwunderlich, dass in europäischen Gesellschaften individuelle Bildungsbeteiligung und Bildungserfolg wesentliche Bestimmungsgrößen der Verteilung gesellschaftlicher Chancen und Risiken darstellen. [less ▲]

Detailed reference viewed: 34 (5 UL)
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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)

Detailed reference viewed: 52 (10 UL)
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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)

Detailed reference viewed: 21 (3 UL)
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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 ▲]

Detailed reference viewed: 37 (8 UL)
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See detailAwareness-raising, Legitimation or Backlash? Effects of the UN Convention on the Rights of Persons with Disabilities on Education Systems in Germany
Powell, Justin J W UL; Edelstein, Benjamin; Blanck, Jonna M.

in Resnik, Julia (Ed.) The Power of Numbers and Networks (in press)

Detailed reference viewed: 33 (5 UL)
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See detailSecurity of Distance−Bounding: A Survey
Gildas, Avoine; Muhammed, Ali Bingöl; Ioana, Boureanu et al

in ACM Computing Surveys (in press)

Distance bounding protocols allow a verifier to both authenticate a prover and evaluate whether the latter is located in his vicinity. These protocols are of particular interest in contactless systems, e ... [more ▼]

Distance bounding protocols allow a verifier to both authenticate a prover and evaluate whether the latter is located in his vicinity. These protocols are of particular interest in contactless systems, e.g. electronic payment or access control systems, which are vulnerable to distance-based frauds. This survey analyzes and compares in a unified manner many existing distance bounding protocols with respect to several key security and complexity features. [less ▲]

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See detailNew Directions in Attack Tree Research: Catching up with Industrial Needs
Gadyatskaya, Olga UL; Trujillo Rasua, Rolando UL

in Mauw, Sjouke (Ed.) Proceedings of the 4th International Workshop on Graphical Models for Security (in press)

Attack trees provide a systematic way of characterizing diverse system threats. Their strengths arise from the combination of an intuitive representation of possible attacks and availability of formal ... [more ▼]

Attack trees provide a systematic way of characterizing diverse system threats. Their strengths arise from the combination of an intuitive representation of possible attacks and availability of formal mathematical frameworks for analyzing them in a qualitative or a quantitative manner. Indeed, the mathematical frameworks have become a large focus of attack tree research. However, practical applications of attack trees in industry largely remain a tedious and error-prone exercise. Recent research directions in attack trees, such as attack tree generation, attempt to close this gap and to improve the attack tree state-of-thepractice. In this position paper we outline the recurrent challenges in manual tree design within industry, and we overview the recent research results in attack trees that help the practitioners. For the challenges that have not yet been addressed by the community, we propose new promising research directions. [less ▲]

Detailed reference viewed: 22 (1 UL)
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See detailTheir ‘Apple of Discord’ or the Apple of Their Eye: How the British Secured Eastern Mediterranean and Western European Security, 1947-1948
Paravantis, Spero UL

in Kamouzis, Dimitris; Nafpliotis, Alexandros (Eds.) Αnglo-Hellenic relations in the 20th Century (2019)

This chapter examines the role the British policy in Greece played in the shift in American foreign policy that was manifested in 1947-48, that led directly to these alliances, namely the Western European ... [more ▼]

This chapter examines the role the British policy in Greece played in the shift in American foreign policy that was manifested in 1947-48, that led directly to these alliances, namely the Western European Union and NATO. To achieve this shift (which also included support of British strategic interests in the Eastern Mediterranean) this chapter argues that the British used Greece, first as a way to draw the United States further into European affairs, and then as a way to anchor the United States in Europe, achieving a guarantee of security for the Eastern Mediterranean and for Western Europe. Drawing on both published and unpublished British and American sources, this chapter will also examine perceptions of the conflicts in and about Greece, and what it represented for Western European and Eastern Mediterranean security, and Western ideas of democracy when confronted with supporting a right-wing Greek government. In so doing, it clarifies how American foreign policy changed from its pre-war focus on non-intervention, to the cold-war politics of containment and intervention. [less ▲]

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See detailNumerical check of the Meyerhof bearing capacity equation for shallow foundations
Van Baars, Stefan UL

in Innovative Infrastructure Solutions (2018), 3(9), 1-13

Most geotechnical design codes and books use the equations of Meyerhof or Terzaghi to calculate shallow foundations. These equations are based on the failure mechanism published by Prandtl for shallow ... [more ▼]

Most geotechnical design codes and books use the equations of Meyerhof or Terzaghi to calculate shallow foundations. These equations are based on the failure mechanism published by Prandtl for shallow strip foundations. The common idea is that failure of a footing occurs in all cases according to a Prandtl-wedge failure mechanism. To check the failure mechanism and the equations of the currently used bearing capacity factors and correction factors, a large number of finite-element calculations of strip and circular footings have been made. The finite-element calculations show that in cases of soils with high friction angles, soils without cohesion or a surcharge, footings with inclined loading or circular footings, not the Prandtl-wedge failure mechanism, but other failure mechanisms occur. In addition, the currently used equations for the bearing capacity factors and correction factors are too high. Therefore, new equations have been presented in this article. For some correction factors, for example, the inclination factors and the cohesion slope factor, an analytical solution is found. [less ▲]

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See detailBENELUX, EUROPE AND THE COLD WAR: THE POWER OF NON-POWERS
Paravantis, Spero UL

Book published by IB Tauris (2018)

What was/is European security in the context of the Cold War? How was and is it conceived? What role did “non-powers” play in European security, and how did they help define it? These were the main ... [more ▼]

What was/is European security in the context of the Cold War? How was and is it conceived? What role did “non-powers” play in European security, and how did they help define it? These were the main questions discussed during the conference held by the C²DH in March 2017. This edited volume brings together the final, peer-reviewed contributions of the participants, and brings them together in a common publication. [less ▲]

Detailed reference viewed: 18 (0 UL)
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See detailThe discrete Pompeiu problem on the plane
Kiss, Gergely UL

Presentation (2018, November 27)

The discrete Pompeiu problem is stemmed from an integral-geometric question on the plane. The problem is whether we can reconstruct a function if we know the average values of the function on every ... [more ▼]

The discrete Pompeiu problem is stemmed from an integral-geometric question on the plane. The problem is whether we can reconstruct a function if we know the average values of the function on every congruent copy of a given pattern. After introducing the theory of spectral analysis on discrete Abelian groups, I show some results for the discrete version of the problem. One of the arguments is connected to a coloring problem of the plane. One of them is a geometric construction and some others based on some geometric and combinatoric properties of the plane. I also mention some unsolved questions of the topic. My talk is based on a joint work with M. Laczkovich and Cs. Vincze. [less ▲]

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See detailConstructions contestées et contrastées de la notion de terroir. Symbolique Politique, Savoir Scientifique, Typicité Culturale et Culturelle
Reckinger, Rachel UL

in Yengué, Louis; Stengel, Kilien (Eds.) Terroir viticole. Espace et figures de qualité (2018)

Detailed reference viewed: 7 (0 UL)
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See detail‘Pas de fraises pour Noël’. Le rôle de la régionalité locavore dans la (re)prise de conscience de la saisonnalité des aliments 
Reckinger, Rachel UL

in Adamiec, Camille; Julien, Marie-Pierre; Régnier, Faustine (Eds.) L’alimentation au fil des saisons. La saisonnalité des pratiques alimentaires (2018)

Detailed reference viewed: 6 (0 UL)
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See detailThe Metonymical Institutionnalisation of Wine Production and Consumption in Luxembourg. Convergence of Terroir Typicity, Political Symbolism, Regulations and Scientific Knowledge
Reckinger, Rachel UL

in Tedeschi, Paolo (Ed.) The Evolution of the Viticulture and Winemaking in Europe: Production, Retail System, Oenological Techniques, Terroir and Local Culture (19th-20th Centuries) (2018)

Detailed reference viewed: 5 (0 UL)