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See detailBürgschaft (§§ 765-778), in Erman, BGB
Zetzsche, Dirk Andreas UL

in Erman (Ed.) Bürgschaft (§§ 765-778), in Erman, BGB (in press)

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See detailVerwahrung (§§ 688-700), in Erman, BGB
Zetzsche, Dirk Andreas UL

in Erman (Ed.) Verwahrung (§§ 688-700), in Erman, BGB (in press)

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See detailA stochastic Galerkin cell-based smoothed finite element method (SGCS-FEM)
Mathew, Tittu; Beex, Lars UL; Bordas, Stéphane UL et al

in International Journal of Computational Methods (in press)

In this paper, the cell based smoothed finite element method is extended to solve stochastic partial diff erential equations with uncertain input parameters. The spatial field of Young's moduli and the ... [more ▼]

In this paper, the cell based smoothed finite element method is extended to solve stochastic partial diff erential equations with uncertain input parameters. The spatial field of Young's moduli and the corresponding stochastic results are represented by Karhunen-Lo eve expansion and polynomial chaos expansion, respectively. The Young's Modulus of structure is considered to be random for stochastic static as well as free vibration problems. Mathematical expressions and the solution procedure are articulated in detail to evaluate the statistical characteristics of responses in terms of static displacements and free vibration frequencies. The feasibility and eff ectiveness of the proposed SGCS-FEM method in terms of accuracy and lower requirement on the mesh size in the solution domain over that of conventional FEM for stochastic problems are demonstrated by carefully chosen numerical examples. From the numerical study, it is inferred that the proposed framework is computationally less demanding without compromising accuracy. [less ▲]

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See detailThe Future of Data-Driven Finance and RegTech
Zetzsche, Dirk Andreas UL; Buckley, Ross; Arner, Douglas et al

in Journal of Law and Policy (in press)

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See detailMeasuring Anxiety in Older Adults: Development, Diagnostic Accuracy, and Preliminary Validation of a Short-Form of the German Geriatric Anxiety Scale (GAS-G-SF)
Gottschling, Juliana UL; Dörendahl, Jan UL; Prell, Tino et al

in Journal of Personality Assessment (in press)

Anxiety symptoms and anxiety disorders are highly prevalent among older adults, and are associ- ated with considerable distress, functional impairment, and burden. Also, there is growing need for brief ... [more ▼]

Anxiety symptoms and anxiety disorders are highly prevalent among older adults, and are associ- ated with considerable distress, functional impairment, and burden. Also, there is growing need for brief instruments to measure anxiety symptoms in primary care and geriatric medical settings. Therefore, the current study focuses on the development and psychometric evaluation of a short- form of the Geriatric Anxiety Scale (GAS-G), a well-established anxiety instrument for use with older adults. Study 1 draws on the original data from the GAS-G validation study (N1⁄4242) to develop the short-form (GAS-G-SF) and determines whether the results replicate with the short- form. Study 2 extends the validation of the GAS-G-SF to a clinical sample (N1⁄4156; 62 patients with heart disease, 94 patients with Parkinson’s disease). Overall, the GAS-G-SF showed promising psychometric properties in terms of internal consistency and validity. Also, the GAS-G-SF showed good discriminatory power based on receiver operating characteristic curve analysis in both stud- ies. These results support the utility of the GAS-G-SF as a brief assessment measure for anxiety. [less ▲]

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See detailWidths of regular and context-free languages
Mestel, David UL

in 39th IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2019) (in press)

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See detailThe legacy of coal mining – a view on examples in Belgium and France
Helfer, Malte UL

in Deutsches Bergbau-Museum Bochum (Ed.) Boom – Crisis – Heritage. King Coal and Energy Revolutions after 1945; proceedings of the international conference March 14th-16th 2018, Technische Hochschule Georg Agricola, Bochum (in press)

Following the end of coalmining in Belgium (1992) and France (2004), the year 2018 marks the end of hard coal mining in Germany as well. This contribution looks at the legacy of coalmining of Germany’s ... [more ▼]

Following the end of coalmining in Belgium (1992) and France (2004), the year 2018 marks the end of hard coal mining in Germany as well. This contribution looks at the legacy of coalmining of Germany’s French-speaking neighbours and presents the most important remaining coal mining heritage sites as well as some extraordinary converted sites in France and the Belgian province Wallonia. [less ▲]

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See detailMit Lingscape auf Pad in der Stadt. Ein Schulprojekt zu gesellschaftlicher Mehrsprachigkeit in Windhoek
Purschke, Christoph UL; Trusch, Kerstin

in Marten, Heiko; Ziegler, Evelyn (Eds.) Linguistic Landscapes im deutschsprachigen Kontext: Forschungsperspektiven, Methoden und Anwendungsmöglichkeiten im Unterricht und Sprachmarketing (in press)

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See detailDetecting the ‘Black Hole’ of age-period excess mortality in 25 countries: Age-period-cohort residual analysis
Chauvel, Louis UL; Leist, Anja UL; Smith, Herbert L.

in Bell, Andrew (Ed.) Age, Period, and Cohort Effects (in press)

In a time of worldwide availability of annual age-specific mortality data, we lack basic tools for detecting and graphing, from a comparative perspective, fine-grained deviations from mortality trends. We ... [more ▼]

In a time of worldwide availability of annual age-specific mortality data, we lack basic tools for detecting and graphing, from a comparative perspective, fine-grained deviations from mortality trends. We provide a new age-period-cohort-based methodology, combining information from age-period (AP) and APC-Detrended (APCD) analyses to detect all-cause mortality increases. Plotting the resulting AP coefficients and APCD residuals in equilateral Lexis diagrams, mortality patterns can easily be distinguished as age, period, or cohort trends and fluctuations. We highlight abnormalities as interactions of age and period (‘Black Holes’). We then investigate the ‘Black Holes’ of mortality of young-adult cohorts in the early 1990s in Spain, other southern European countries, and the U.S., in emphasizing their simultaneously occurring mortality crises. Additional analyses with WHO mortality data and epidemiological evidence from other studies show that these mortality increases likely result from lack of treatment and inadequate public health responses to the beginnings of the HIV/AIDS epidemic. We discuss other possible applications of the new method. [less ▲]

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See detailDie Psychotechnik im Dienste der Berufsberatung - eine Erinnerung an die Verdienste von Nicolas Braunshausen
Steffgen, Georges UL; Ewen, Norbert UL

in Psychologische Rundschau: Ueberblick Uber die Fortschritte der Psychologie in Deutschland, Oesterreich, und der Schweiz (in press)

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See detailViews on Ageing - A Lifespan Approach
Kornadt, Anna Elena UL; Kessler, Eva-Marie; Wurm, Susanne et al

in European Journal of Ageing (in press)

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See detailSparse classification with paired covariates
Rauschenberger, Armin UL; Ciocănea-Teodorescu, Iuliana; Jonker, Marianne A. et al

in Advances in Data Analysis and Classification (in press)

This paper introduces the paired lasso: a generalisation of the lasso for paired covariate settings. Our aim is to predict a single response from two high-dimensional covariate sets. We assume a one-to ... [more ▼]

This paper introduces the paired lasso: a generalisation of the lasso for paired covariate settings. Our aim is to predict a single response from two high-dimensional covariate sets. We assume a one-to-one correspondence between the covariate sets, with each covariate in one set forming a pair with a covariate in the other set. Paired covariates arise, for example, when two transformations of the same data are available. It is often unknown which of the two covariate sets leads to better predictions, or whether the two covariate sets complement each other. The paired lasso addresses this problem by weighting the covariates to improve the selection from the covariate sets and the covariate pairs. It thereby combines information from both covariate sets and accounts for the paired structure. We tested the paired lasso on more than 2000 classification problems with experimental genomics data, and found that for estimating sparse but predictive models, the paired lasso outperforms the standard and the adaptive lasso. The R package palasso is available from CRAN. [less ▲]

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See detailChildhood Emotional Abuse and Cyberbullying Perpetration: The Role of Dark Personality Traits
Kircaburun, Kagan; Jonason, Peter; Griffiths, Mark D. et al

in Journal of Interpersonal Violence (in press), 0(0), 0886260519889930

Dark personality traits (i.e., Machiavellianism, psychopathy, narcissism, spitefulness, and sadism) are associated with adverse childhood experiences and deviant online behaviors. However, their mediating ... [more ▼]

Dark personality traits (i.e., Machiavellianism, psychopathy, narcissism, spitefulness, and sadism) are associated with adverse childhood experiences and deviant online behaviors. However, their mediating role between childhood emotional abuse and cyberbullying has never previously been investigated. We examined direct and indirect associations of childhood emotional abuse and cyberbullying via dark personality traits among 772 participants. Men were better characterized by dark personality traits and were more likely to engage in cyberbullying than women, and there were no sex differences in childhood emotional abuse. Collectively, dark traits fully mediated the relationship between childhood emotional abuse and cyberbullying in men, with partial mediation in the total sample and women. More specifically, Machiavellianism and spitefulness were mediators in both samples, sadism was a mediator in men and the total sample, and psychopathy was a mediator in the total sample and women. The dark personality traits can account for the association between childhood emotional abuse and cyberbullying, especially among men. [less ▲]

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See detailThe effect of risk disclosure on analyst following
Derouiche, Imen UL; Muessig, Anke UL; Weber, Véronique UL

in European Journal of Finance (in press)

Prior research shows that financial analysts play an important information intermediary role in France. This study extends earlier research to examine the effect of risk disclosure on the number of ... [more ▼]

Prior research shows that financial analysts play an important information intermediary role in France. This study extends earlier research to examine the effect of risk disclosure on the number of analysts following listed firms. Using a unique dataset of French firms on the 120 SBF index over 2007−2015, the results show a positive and significant relation between risk disclosure and analyst following, suggesting that firms having greater risk disclosure attract more financial analysts. These findings provide empirical support to the argument that analysts incur lower costs of information gathering in firms with greater risk disclosure. The demand for analyst services is also more valuable in these firms, given their potentially high exposure to risks, implying greater analyst following. Overall, our results are in line with prior literature highlighting that analysts’ activities complement annual report disclosures and, generally, corporate disclosures. [less ▲]

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See detailOn Rational Entailment for Propositional Typicality Logic
Booth, Richard; Casini, Giovanni UL; Meyer, Thomas et al

in Artificial Intelligence (in press)

Propositional Typicality Logic (PTL) is a recently proposed logic, ob- tained by enriching classical propositional logic with a typicality opera- tor capturing the most typical (alias normal or ... [more ▼]

Propositional Typicality Logic (PTL) is a recently proposed logic, ob- tained by enriching classical propositional logic with a typicality opera- tor capturing the most typical (alias normal or conventional) situations in which a given sentence holds. The semantics of PTL is in terms of ranked models as studied in the well-known KLM approach to preferen- tial reasoning and therefore KLM-style rational consequence relations can be embedded in PTL. In spite of the non-monotonic features introduced by the semantics adopted for the typicality operator, the obvious Tarskian definition of entailment for PTL remains monotonic and is therefore not appropriate in many contexts. Our first important result is an impossibil- ity theorem showing that a set of proposed postulates that at first all seem appropriate for a notion of entailment with regard to typicality cannot be satisfied simultaneously. Closer inspection reveals that this result is best interpreted as an argument for advocating the development of more than one type of PTL entailment. In the spirit of this interpretation, we in- vestigate three different (semantic) versions of entailment for PTL, each one based on the definition of rational closure as introduced by Lehmann and Magidor for KLM-style conditionals, and constructed using different notions of minimality. [less ▲]

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See detailPolitical Food Communication. Contrasting Food Governance Claims via Labelling Schemes and priorities of private and professional consumers
Reckinger, Rachel UL; Kapgen, Diane UL; Korjonen, Maria Helena UL

in Godeman, Jasmin; Bartelmeß (Eds.) Handbuch Ernährungskommunikation. Interdisziplinäre Perspektiven im Kontext von Nachhaltigkeit (in press)

Political food communication may take many forms, including direct recommendations to public institutions and private households (cf. Reckinger/Régnier 2017), or more indirect labelling schemes that ... [more ▼]

Political food communication may take many forms, including direct recommendations to public institutions and private households (cf. Reckinger/Régnier 2017), or more indirect labelling schemes that certify various types of quality – from sustainable via nutritious to ethical. The underlying governance claims differ in those cases: in the first one, priority is given to analytical, top-down information to procurement actors and to individuals of a given population; in the second one, action is rather taken in the direction of food production and transformation, be it top-down or participatory, with an associated effort to make the communicated guarantees transparent to consumers. In this article, we will analyse in a praxeological perspective the contrasting governance claims that structure a selection of labelling schemes in contemporary Luxembourg: official ones (such as organic produce, among others), voluntary and regional ones, international ones, as well as supermarket brands blurring boundaries and using overlaps of several labels. We will compare the guarantees and transparency that labels tend to offer in the socio-ecological, socioeconomic, sociocultural and socio-political dimensions of food certification, viewed as a potentially enabling or disabling form of food communication. At the same time, we will examine the potential of these aids for individual consumers’ priorities and public procurement actors’ legal framework in selecting foodstuffs with added sustainable or ethical value, asking the question if such certifications are efficient tools of food communication and ultimately of an enhanced food literacy in an arena of potentially conflicting and crowded messages. [less ▲]

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See detailThe EU Administrative Institutions, Their Law and Legal Scholarship
Mendes, Joana UL

in Cane, Peter; Hoffman, Herwig; Lindseth, Peter (Eds.) Oxford Handbook on Comparative Administrative Law (in press)

The chapter approaches the EU administrative institutions as catalysts of the development of administrative law of the European Union. As a chapter of the Oxford Handbook on Comparative Administrative Law ... [more ▼]

The chapter approaches the EU administrative institutions as catalysts of the development of administrative law of the European Union. As a chapter of the Oxford Handbook on Comparative Administrative Law, it explains the main traits of those institutions, how legal scholarship has portrayed them and how it has addressed the core aspects of their legal regimes. Furthermore, it traces the emergence and current state of EU administrative law, characterising the different roles comparative administrative law has had at different stages. It highlights the initial dissonance between the specificities of the EU administrative institutions and the state-matrix of general principles that were developed on the basis of functional comparison; the role of legal scholarship in shaping EU administrative law, in its efforts to give effect to an “utopia” (Chiti, 2007) of an integrated administration constitutionally framed by general principles and fundamental rights; the limits of resorting to comparative administrative law in the context of EU integration and, briefly, the crossroads at which EU administrative law currently stands. [less ▲]

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See detailIntegrating Topological Proofs with Model Checking to Instrument Iterative Design
Menghi, Claudio UL; Rizzi, Alessandro Maria; Bernasconi, Anna

in Proceedings of the 23rd International Conference on Fundamental Approaches to Software Engineering, FASE 2020 (in press)

System development is not a linear, one-shot process. It proceeds through refinements and revisions. To support assurance that the system satisfies its requirements, it is desirable that continuous ... [more ▼]

System development is not a linear, one-shot process. It proceeds through refinements and revisions. To support assurance that the system satisfies its requirements, it is desirable that continuous verification can be performed after each refinement or revision step. To achieve practical adoption, formal verification must accommodate continuous verification efficiently and effectively. Model checking provides developers with information useful to improve their models only when a property is not satisfied, i.e., when a counterexample is returned. However, it is desirable to have some useful information also when a property is instead satisfied. To address this problem we propose TOrPEDO, an approach that supports verification in two complementary forms: model checking and proofs. While model checking is typically used to pinpoint model behaviors that violate requirements, proofs can instead explain why requirements are satisfied. In our work, we introduce a specific notion of proof, called Topological Proof. A topological proof produces a slice of the original model that justifies the property satisfaction. Because models can be incomplete, TOrPEDO supports reasoning on requirements satisfaction, violation, and possible satisfaction (in the case where satisfaction depends on unknown parts of the model). Evaluation is performed by checking how topological proofs support software development on 12 modeling scenarios and 15 different properties obtained from 3 examples from literature. Results show that: (i) topological proofs are ≈60% smaller than the original models; (ii) after a revision, in ≈78% of cases, the property can be re-verified by relying on a simple syntactic check. [less ▲]

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See detailReinforcing citizens’ participation by reforming European commission public consultations
Kies, Raphaël UL

in Alemanno, Alberto; Oregan, James (Eds.) Democratic Participation in a Citizen's Europe: What next for the EU? (in press)

In this chapter, I would like to draw some lessons from the failed attempts of democratization of the EU by proposing some guidelines that should be followed in order to envision a realistic deliberative ... [more ▼]

In this chapter, I would like to draw some lessons from the failed attempts of democratization of the EU by proposing some guidelines that should be followed in order to envision a realistic deliberative and inclusive transformation of the EU-decision making process. By following their spirits, I will propose an ambitious renovation of the public consultation regime of the EU Commission, the only institutionalized system of public consultation enshrined in the EU Treaties that however most of the citizens are not aware of. This is an idea that I first presented in at the conference at the World Bank (Kies 2016) and that has since then been discussed and presented in the report commissioned by the European Economic and Social Committee (Lironi and Peta 2017), the European Parliament (Korthagen et al. 2018) and is presently discussed within the European Court of Auditors. [less ▲]

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