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See detailStudents' exploration strategies in computer-simulated complex problem environments: A latent class approach
Greiff, Samuel UL; Molnár, Gyöngyvér; Martin, Romain UL et al

in Computers & Education (2018), 126

Complex problem solving (CPS) is considered an important educational achievement indicator. Previous research has indicated that CPS performance depends to a substantial extent on the way students explore ... [more ▼]

Complex problem solving (CPS) is considered an important educational achievement indicator. Previous research has indicated that CPS performance depends to a substantial extent on the way students explore problem environments. In this study, we investigated qualitative differences in the way students interact with such environments. In a sample of N = 2226 Hungarian students in Grades 6 to 8, we applied a latent class approach to investigate the use of the principle of isolated variation as an exploration strategy across six CPS tasks that were developed within the MicroDYN approach. Six qualitatively different class profiles emerged: proficient explorers, intermediate explorers, low-performing explorers, rapid learners, emerging explorers, and nonpersisting explorers. We further validated the profiles by comparing the latent classes with regard to students' overall CPS performance and additional indicators of task exploration. In analyzing age-related and gender differences on a cross-sectional level, we found only a small progression toward better performing class profiles from Grade 6 to Grade 8 (e.g., 14.6% of students in Grade 6 were proficient explorers vs. 24.6% in Grade 8; 27.1% of students in Grade 6 were low-performing explorers vs. 25.8% in Grade 8), and there were no substantial gender differences. This study contributes to the understanding of how students interact with complex problems and is the first to address whether variations in these behaviors indicate qualitatively different levels of strategic behavior. We discuss the theoretical underpinnings and potential of identifying class profiles of students' exploration behavior in the field of educational psychology. [less ▲]

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See detailUnderstanding the link between need for cognition and complex problem solving
Rudolph, Julia UL; Greiff, Samuel UL; Strobel, Anja et al

in Contemporary Educational Psychology (2018), 55

With the aim of broadening the understanding of the nomological network of Complex Problem Solving (CPS), we investigated the link between CPS and Need for Cognition (NFC) while controlling for reasoning ... [more ▼]

With the aim of broadening the understanding of the nomological network of Complex Problem Solving (CPS), we investigated the link between CPS and Need for Cognition (NFC) while controlling for reasoning ability. Further, we explored whether the relation between NFC and CPS was mediated by test-taking behavior (i.e., exploration time). Using structural equation modeling, we analyzed data from 474 German seventh graders. We found (a) that NFC and CPS were positively related, (b) that this link was partially mediated by CPS exploration time, and (c) that the link between NFC and CPS that was partially mediated by exploration time remained substantial even after we controlled for reasoning. Altogether, these results provide new insights into how CPS and NFC are linked. [less ▲]

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See detailEJPA Introduces Registered Reports as New Submission Format
Greiff, Samuel UL; Allen, Mark S.

in European Journal of Psychological Assessment (2018), 34(4), 217-219

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See detailJuges et avocats généraux de la Cour de Justice de l’Union européenne (1952 – 1972). Une approche biographique de l’histoire d’une révolution juridique
Fritz, Vera UL

Book published by Vittorio Klostermann (2018)

Drawing on archives gathered in the six founding member states of the European Union, this book offers a new perspective on the "constitutionalization" of the European treaties, which was launched in the ... [more ▼]

Drawing on archives gathered in the six founding member states of the European Union, this book offers a new perspective on the "constitutionalization" of the European treaties, which was launched in the 1960s by the Court of Justice of the EU. By highlighting the professional and personal backgrounds of the first European judges and advocates general, its author studies the dynamics which prevailed within the institution during its "revolutionary" years and analyzes the Court’s relationship with the Member States of the European Communities. Through a detailed study of the selection process of the members of the Court, it also provides new answers to the question of whether governments tried to put an end to its bold jurisprudence. [less ▲]

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See detailPrice volatility and market performance measures: The case of revenue managed goods
Mantin, Benny UL; Rubin, Eran

in Transportation Research. Part E, Logistics and Transportation Review (2018), 120(December), 35-50

The operational outcome of Revenue Management (RM) is manifested in different magnitudes of market level price volatilities. In this paper we take an analytics approach to the possible use of pricing data ... [more ▼]

The operational outcome of Revenue Management (RM) is manifested in different magnitudes of market level price volatilities. In this paper we take an analytics approach to the possible use of pricing data of revenue-managed goods to support market analysis. Quantifying the relationship between market-level price volatility in the airline industry and various market-level performance metrics, we find that higher levels of price volatility are associated with higher levels of transacted fares, lower load factors, higher revenues, and increased transacted fare dispersion. This suggests the potential in utilizing market price volatility as an input for market analytics. [less ▲]

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See detailUrban spatial structure, employment and social ties
Picard, Pierre M UL; zenou, yves

in Journal of Urban Economics (2018), 104(C), 77-93

Consider a model where workers from the majority and the minority group choose both their residential location (geographical space) and the intensity of their social interactions (social space). We ... [more ▼]

Consider a model where workers from the majority and the minority group choose both their residential location (geographical space) and the intensity of their social interactions (social space). We demonstrate under which condition one group resides close to the job center while the other lives far away from it. Even though the two groups have the same characteristics and there is no discrimination in the housing or labor market, we show that the majority group can have a lower unemployment rate whenever it resides close to or far away from the workplace. This is because this group generates a larger and better-quality social network. [less ▲]

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See detailThe Idea of Relative Authority in European and International Law
Venzke, Ingo; Mendes, Joana UL

in International Journal of Constitutional Law (2018), 16(1), 75-100

The present contribution reacts to concerns about the legitimacy of supra- and international public authority by introducing the idea of relative authority. It argues that public authority is relative ... [more ▼]

The present contribution reacts to concerns about the legitimacy of supra- and international public authority by introducing the idea of relative authority. It argues that public authority is relative, first, in the sense that the exercise of authority by one actor always stands in relation to others and, second, that the allocation of authority should be informed by the legitimacy assets that different actors can bring into the governance process. It develops an argument in favor of a specific, articulated allocation of public authority. Like other legal approaches to global governance it is inspired by domestic legal theory and thinking. It distinguishes itself through its focus on questions of institutional choice: Who should do what in European and international law? While ideas of the separation of power face an uphill battle in the variegated institutional settings on the European and even more so international level, the core normative program embedded in this idea provides traction. The contribution offers the idea of relative authority as a core part of an argumentative framework to critique and help justify the exercise of supra- and international public authority. [less ▲]

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See detailCentre d’Information du château de Vianden
Genot, Gilles UL; Vomacka, Eloïse UL

in Hemecht: Zeitschrift für Luxemburger Geschichte (2018), 70/3

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See detailAN INVESTIGATION INTO THE LIFE AND WORKS OF RICHARD LANE, MEMBER OF THE YOUNG COMPOSERS PROJECT: A COMPARATIVE STYLISTIC ANALYSIS OF CHORAL, CHAMBER ENSEMBLE, STRING ORCHESTRA, AND WIND BAND WORKS
Dimitrakoulakos, Demosthenes UL

Doctoral thesis (2018)

Richard Lane (1933-2004) was a prolific American composer from Paterson, New Jersey with approximately five-hundred pieces in his oeuvre. The primary research contribution of this study was to ... [more ▼]

Richard Lane (1933-2004) was a prolific American composer from Paterson, New Jersey with approximately five-hundred pieces in his oeuvre. The primary research contribution of this study was to stylistically analyze, compare and contrast eight pieces composed by Lane during his career, with a focus on discovering the extent to which Lane developed his stylistic features as an adaptable and eclectic composer. Four of these works were completed early in his career during his two-year residency (1959-1961) in Rochester, New York and Lexington, Kentucky as a member of the Young Composers Project (YCP), while the other four works were completed during the last decade of his life (1994-2004). Choral, chamber ensemble, string orchestra and wind band works were selected to represent a broad overview of Lane’s repertoire for each of these four genres, across educational, community, and professional levels. The theoretical analysis of Lane’s pieces was conducted according to the processes detailed in Jan LaRue’s (1918-2004) Guidelines for Style Analysis, which revolve around five musical elements: sound, harmony, melody, rhythm, and growth. In order to introduce, complement and contextualize the style analysis and the development of Lane as a composer, the secondary and tertiary contributions of this study were conducted to produce the first complete biography of Lane, along with the first complete annotated work index of his compositional output. Although one other research study has been conducted relating to Lane’s solo vocal compositional techniques, no other analytical research has been conducted on Lane’s music from other genres, and there is currently no complete biography or complete work index of Lane’s music. Therefore, the current study on Lane provides three new research contributions to the literature: 1) stylistic analysis across four genres 2) a complete biography which situates Lane’s entire life’s work, complemented by 3) a complete annotated work index. The current study revealed that Lane wrote from educational through professional levels, combining aspects of Renaissance, Baroque, Classical and Romantic characteristics, alongside other twentieth century tonal compositional styles, including, but not limited to jazz and popular-oriented music. One implication of this study indicates that further research into Lane’s compositional style deserves attention as only eight of his nearly five-hundred pieces are analyzed in detail in this study. The author aims for this study to be a valuable resource for future conductors and performers of Lane’s music. [less ▲]

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See detailCapturing Regional Variation with Distributed Place Representations and Geographic Retrofitting
Hovy, Dirk; Purschke, Christoph UL

in Proceedings of the 2018 Conference on Empirical Methods in Natural Language Processing (2018)

Detailed reference viewed: 91 (1 UL)
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See detailOn Vulnerability Evolution in Android Apps
Gao, Jun UL; Li, Li; Pingfan, Kong et al

Poster (2018)

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See detailUn nain à la table des géants. Le Grand-Duché de Luxembourg aux origines de l'OTAN
Lafontaine, Aurélia UL

in Hemecht: Zeitschrift für Luxemburger Geschichte (2018), (4), 23-44

Detailed reference viewed: 49 (8 UL)
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See detailRepo Markets Across the Atlantic: Similar but Unalike
Wu, Songjiwen; Nabilou, Hossein UL

in European Business Law Review (2018)

This paper sketches the key differences in the EU and the U.S. repo markets to inform the policy recommendations for harmonization and standardization of rules governing repo contracts put forward by the ... [more ▼]

This paper sketches the key differences in the EU and the U.S. repo markets to inform the policy recommendations for harmonization and standardization of rules governing repo contracts put forward by the international financial fora and standard setters. In so doing, it examines three main aspects of the repo markets. First, it highlights the differences in the legal framework governing repo markets, such as legal construction of repo contracts, special insolvency treatment, and legal treatment of the reuse of collateral. Second, it discusses the composition, structure, and organization of the repo markets, such as differences in the composition of repo participants, the maturity of repos and the composition of the underlying collateral in repo contracts. Finally, it investigates the differences in the issues related to the market infrastructure of repo markets such as differences in the clearing and collateral management stages. The main finding of this paper is that in spite of significant efforts to standardize and harmonize repo markets as well as their applicable legal framework in the past, there remains significant differences across the Atlantic. Such differences in the legal framework, composition, structure, and organization of repo markets and repo markets infrastructure would require differential and more nuanced approach to regulating repo markets than what is pursued by the current international financial standard setters. [less ▲]

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See detailMono-to-multilayer transition in growing bacterial colonies
Sengupta, Anupam UL

E-print/Working paper (2018)

The transition from monolayers to multilayered structures in bacterial colonies is a fundamental step in biofilm development. Observed across different morphotypes and species, this transition is ... [more ▼]

The transition from monolayers to multilayered structures in bacterial colonies is a fundamental step in biofilm development. Observed across different morphotypes and species, this transition is triggered within freely growing bacterial microcolonies comprising a few hundred cells. Using a combination of numerical simulations and analytical modeling, here we demonstrate that this transition originates from the competition between growth-induced in-plane active stresses and vertical restoring forces, due to the cell-substrate interactions. Using a simple chain-like colony of laterally confined cells, we show that the transition is triggered by the mechanical instability of individual cells, thus it is localized and mechanically deterministic. Asynchronous cell division renders the process stochastic, so that all the critical parameters that control the onset of the transition are continuously distributed random variables. Upon modeling cell division as a Poisson process, we can approximately calculate the probability distribution function of the position and time associated with the first extrusion. The rate of such a Poisson process can be identified as the order parameter of the transition, thus highlighting its mixed deterministic/stochastic nature. [less ▲]

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See detailDroit international privé de l'Union européenne (2017)
Kinsch, Patrick UL; d'Avout, Louis, and others

in Journal du Droit International (2018)

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See detailWorkshop „Erhebung relationaler Daten aus Texten“
During, Marten UL; Stark, Martin

Presentation (2018)

Detailed reference viewed: 24 (2 UL)
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See detailRaman signatures of ferroic domain walls captured by principal component analysis
Nataf, G. F.; Barrett, N.; Kreisel, Jens UL et al

in JOURNAL OF PHYSICS-CONDENSED MATTER (2018), 30(3),

Ferroic domain walls are currently investigated by several state-of-the art techniques in order to get a better understanding of their distinct functional properties. Here, principal component analysis ... [more ▼]

Ferroic domain walls are currently investigated by several state-of-the art techniques in order to get a better understanding of their distinct functional properties. Here, principal component analysis (PCA) of Raman maps is used to study ferroelectric domain walls (DWs) in LiNbO3 and ferroelastic DWs in NdGaO3. It is shown that PCA allows us to quickly and reliably identify small Raman peak variations at ferroelectric DWs and that the value of a peak shift can be deduced-accurately and without a priori-from a first order Taylor expansion of the spectra. The ability of PCA to separate the contribution of ferroelastic domains and DWs to Raman spectra is emphasized. More generally, our results provide a novel route for the statistical analysis of any property mapped across a DW. [less ▲]

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See detailAn investigation of the psychometric properties of the Geriatric Anxiety Scale (GAS) in an Italian sample of community-dwelling older adults.
Gatti, A.; Gottschling, Juliana UL; Brugnera, A. et al

in Aging and Mental Health (2018), 22(9), 1170-1178

Detailed reference viewed: 66 (1 UL)