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See detailExploring the relation between speed and ability in complex problem solving
Scherer, Ronny; Greiff, Samuel UL; Hautamäki, J.

in Intelligence (2015), 48

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See detailExploring the significance of resource-rich views in science education
Siry, Christina UL

in Cultural Studies of Science Education (2011), 6(4), 1019-1029

In a recently published article in Cultural Studies of Science Education (Volume 6, Issue 2) titled What does playing cards have to do with science? A resource-rich view of African American young men ... [more ▼]

In a recently published article in Cultural Studies of Science Education (Volume 6, Issue 2) titled What does playing cards have to do with science? A resource-rich view of African American young men, Alfred Schademan (2011) examines the resources that African American young men learn through playing a card came called Spades. In his ethnographic study, he takes a resource-rich view of the players, highlights science-related resources demonstrated by the players, and challenges deficit notions of these young men. Three Forum response papers complement Schademan’s research. The first is written by Nancy Ares, the second is coauthored by Allison Gonsalves, Gale Seiler, and Dana Salter, and the third is written by Philemon Chigeza. All three of these response papers elaborate on his points and emphasize issues inherent in working towards resource-rich views in science education. In this paper, I draw on all four papers to explore the possibilities in recognizing, highlighting, and accepting the resources that students bring as being resources for science learning. [less ▲]

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See detailExploring the User Experience of Autonomous Driving: Workshop at AutomotiveUI 2013
Tscheligi, Manfred; Wilfinger, David; Meschtscherjakov, Alexander et al

in Proceedings of Automotive User Interfaces 2013 (2008, October 27)

Although cars are not flying yet, self-driving cars are definitively closer than some may think. Numerous research organizations and major companies have developed working prototype autonomous vehicles ... [more ▼]

Although cars are not flying yet, self-driving cars are definitively closer than some may think. Numerous research organizations and major companies have developed working prototype autonomous vehicles. Three U.S. states have passed laws permitting autonomous cars on public roads and the UK is currently working on making similar policy changes. Technical challenges are of great importance to fully transition to these vehicles, but legislation, infrastructure and human factors elements are of equal significance to tackle, and have received much less attention. With this workshop, we would like to start the conversation of Autonomous Vehicles with experts and researchers specifically in the area of Human Factors and User Experience. This workshop will explore the emerging themes of autonomous driving, social driving and novel user interface approaches. The aim being to define the future landscape for research within and across each these areas. [less ▲]

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See detailExploring the uses of ICT in education: A national survey study
Reuter, Bob UL; Busana, Gilbert UL; Linckels, Serge

Scientific Conference (2016, November 23)

This study aims at documenting current educational technology practices in Luxembourgish public schools and to better understand them in terms of various internal/proximal and external/distal enabling ... [more ▼]

This study aims at documenting current educational technology practices in Luxembourgish public schools and to better understand them in terms of various internal/proximal and external/distal enabling factors and barriers. It is supposed to serve as a guide for current digital education policies, strategies and actions and to assess their effects in the near and mid-term future. Therefore, an online survey was designed and deployed to all primary and secondary school teachers asking (mostly multiple choice) questions about a variety of proximal and distal influence factors and about ICT-supported pedagogical practices of teachers. Results show that teachers are willing to integrate ICT in education, that they are aware of its importance, that they feel comfortable to use ICT in everyday, but not prepared to use them for educational purposes. ICT-supported teaching remains rather teacher-centered. This has important implications for teacher training and on digital education strategies to be implemented. [less ▲]

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See detailExploring therapeutic viability of a non-dopaminergic target for Parkinson’s disease
Ashrafi, Amer; Buttini, Manuel UL; Garcia, Pierre UL et al

in Movement Disorders (2016), 31(2), 630

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See detailExploring Three Different Assessment Techniques of the Test for Creative Thinking-Drawing Production
Kirsch, Christiane UL; Lubart, Todd

Poster (2014, June)

L’aspect principal de la recherche présente consiste dans la comparaison de trois techniques d’évaluation du Test of Creative Thinking : Drawing Production (Test de Pensée Créative : Production Picturale ... [more ▼]

L’aspect principal de la recherche présente consiste dans la comparaison de trois techniques d’évaluation du Test of Creative Thinking : Drawing Production (Test de Pensée Créative : Production Picturale TPC-PP) (Urban & Jellen, 1995). Il s’agit de déterminer la technique d’évaluation la plus appropriée pour différents types de populations : architectes, psychologues et la population générale. L’échantillon des architectes compte 140 participants (65 femmes, 75 hommes, M = 21.96, ET = 4.37, distribution d’âge: 18-52 ans). L’échantillon des psychologues compte 121 participants (95 femmes, 24 hommes, M = 21.94, ET = 2.22, distribution d’âge: 19-32 ans). L’échantillon de la population générale compte 175 participants (109 femmes, 66 hommes, M = 24.47, ET = 3.52, distribution d’âge: 19-39 ans). Mis à part de la population des architectes, on retrouve des corrélations élevées entre les trois techniques d’évaluation. Ce résultat, quelque peu surprenant, est ramené au niveau d’expertise en dessin des architectes. Il semble bien que dans ce domaine spécifique, il est utile d’avoir recours à des juges experts en matière de dessin ou d’architecture. Des recherches futures pourraient tenter d’établir des modèles de prédiction de la créativité, adaptés aux champs plus vastes des arts, de la science et de la créativité dans la vie de tous les jours. Ils devraient être respectivement basés sur la méthode d’évaluation la plus adaptée à la population concernée. Ceci permettrait de fortifier la mesure du construit de la créativité et d’établir des modèles de prédiction de la créativité plus élaborés et plus spécifiques. [less ▲]

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See detailExploring Transnational Entrepreneurship: On the Interface between International Entrepreneurship and Ethnic Entrepreneurship
Adiguna, Rocky UL

Bachelor/master dissertation (2012)

Transnational entrepreneurship (TE) has been in the spotlight as an emerging field during the last decade. Previously being viewed from international entrepreneurship (IE) and ethnic entrepreneurship (EE ... [more ▼]

Transnational entrepreneurship (TE) has been in the spotlight as an emerging field during the last decade. Previously being viewed from international entrepreneurship (IE) and ethnic entrepreneurship (EE) perspectives, TE has recently demarcating its own territory. However, the exact boundary in which TE differs from IE and EE is yet to be studied. This research is aiming to explore the interface of TE, IE, and EE through the entrepreneurs’ sets of resources—economic, social, cultural, and symbolic capital. By studying the case of ten immigrant entrepreneurs in Jönköping context, we found four key features that distinguish TE with the rest: access to the sets of resources, economic and social development, ownership structure, and business operations. [less ▲]

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See detailUne expo sur Baru et ses potes
Scuto, Denis UL

in Tageblatt (2016)

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See detailExponential actions and maximal D-invariant ideals
Molitor-Braun, Carine UL

in Manuscripta Mathematica (1998), 96(1), 23-35

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See detailExponential actions, orbits and their kernels
Ludwig, Jean; Molitor-Braun, Carine UL

in Bulletin of the Australian Mathematical Society (1998), 57

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See detailExponential Growth and the Shifting Global Center of Gravity of Science Production, 1900-2011
Zhang, Liang; Powell, Justin J W UL; Baker, David P.

in Change. The Magazine of Higher Learning (2015), 47(4), 46-49

The unprecedented, exponential growth in article production reflects the increased importance of science in countries worldwide. The shifting center of gravity away from the US emphasizes its relative ... [more ▼]

The unprecedented, exponential growth in article production reflects the increased importance of science in countries worldwide. The shifting center of gravity away from the US emphasizes its relative decline as Asian and European countries invest heavily in their national higher education and research capacity. At the same time, cutting-edge knowledge production increasingly relies on building international and intercultural bridges between scholars. Thus, research and development requires investment not only in individuals within organizations but also in the networks, connections, and exchanges that facilitate discoveries. Competition is complemented by collaboration. The simultaneous shift and eastward movement of the centers of economic prosperity and scientific production since the 1950s is not surprising. Economic development provides the resources necessary for scientific production, which in turn spurs further economic growth. Although causality cannot be inferred from this concurrent movement, decades of economic research have shown that education, science, and technology have played crucial and mutually reinforcing roles in economic growth. They are likely to do so even more in an increasingly knowledge-driven global economy. [less ▲]

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See detailExponential integrability and exit times of diffusions on sub-Riemannian and RCD*(K,N) spaces
Thompson, James UL; Thalmaier, Anton UL

E-print/Working paper (2019)

In this article we derive moment estimates, exponential integrability, concentration inequalities and exit times estimates for canonical diffusions in two settings each beyond the scope of Riemannian ... [more ▼]

In this article we derive moment estimates, exponential integrability, concentration inequalities and exit times estimates for canonical diffusions in two settings each beyond the scope of Riemannian geometry. Firstly, we consider sub-Riemannian limits of Riemannian foliations. Secondly, we consider the non-smooth setting of RCD*(K,N) spaces. In each case the necessary ingredients are an Ito formula and a comparison theorem for the Laplacian, for which we refer to the recent literature. As an application, we derive pointwise Carmona-type estimates on eigenfunctions of Schrodinger operators. [less ▲]

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See detailExponential Observer-Based Stabilization for a Class of Affine Nonlinear Systems
Ndoye, Ibrahima UL; Zasadzinski, Michel; Radhy, Nour-Eddine et al

in 14th International IEEE/IFAC Conference Methods and Models in Automation and Robotics, MMAR’09botics MMAR'09, Poland, 19 - 21 August 2009 (2009)

In this paper, we investigate the problem of stabilizing a class of nonlinear affine systems by using the generalization of Gronwall-Bellman lemma with two control laws: first a nonlinear state feedback ... [more ▼]

In this paper, we investigate the problem of stabilizing a class of nonlinear affine systems by using the generalization of Gronwall-Bellman lemma with two control laws: first a nonlinear state feedback and second a nonlinear observer-based control. The obtained closed-loop stability is exponential. [less ▲]

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See detailExponential S-Boxes: a Link Between the S-Boxes of BelT and Kuznyechik/Streebog
Perrin, Léo Paul UL; Udovenko, Aleksei UL

in IACR Transactions on Symmetric Cryptology (2017), 2016(2), 99-124

The block cipher Kuznyechik and the hash function Streebog were recently standardized by the Russian Federation. These primitives use a common 8-bit S-Box, denoted 𝜋, which is given only as a look-up ... [more ▼]

The block cipher Kuznyechik and the hash function Streebog were recently standardized by the Russian Federation. These primitives use a common 8-bit S-Box, denoted 𝜋, which is given only as a look-up table. The rationale behind its design is, for all practical purposes, kept secret by its authors. In a paper presented at Eurocrypt 2016, Biryukov et al. reverse-engineered this S-Box and recovered an unusual Feistel-like structure relying on finite field multiplications. In this paper, we provide a new decomposition of this S-Box and describe how we obtained it. The first step was the analysis of the 8-bit S-Box of the current standard block cipher of Belarus, BelT. This S-Box is a variant of a so-called exponential substitution, a concept we generalize into pseudo-exponential substitution. We derive distinguishers for such permutations based on properties of their linear approximation tables and notice that 𝜋 shares some of them. We then show that 𝜋 indeed has a decomposition based on a pseudo-exponential substitution. More precisely, we obtain a simpler structure based on an 8-bit finite field exponentiation, one 4-bit S-Box, a linear layer and a few modular arithmetic operations. We also make several observations which may help cryptanalysts attempting to reverse-engineer other S-Boxes. For example, the visual pattern used in the previous work as a starting point to decompose 𝜋 is mathematically formalized and the use of differential patterns involving operations other than exclusive-or is explored. [less ▲]

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See detailExponential Stability Criteria for Uncertain Stochastic Systems
Li, Yumei UL; Guan, Xinping; Peng, Dan et al

in The 27th Chinese Control Conference (2008)

This paper considers the problem of delay-dependent exponential stability in mean square for a class of stochastic systems with polytopic-type uncertainties and time-varying delay. Based on the ... [more ▼]

This paper considers the problem of delay-dependent exponential stability in mean square for a class of stochastic systems with polytopic-type uncertainties and time-varying delay. Based on the application of the descriptor model transformation and free weighting matrices to express this relationship among the system variables and among the terms in the Newton-Leibniz formula, some new delay-dependent exponential stability criteria are obtained in terms of linear matrix inequalities(LMIs). The new criteria are less conservative than existing ones. Numerical examples demonstrate the new criteria are effective and are an improvement over existing ones. [less ▲]

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See detailExponential Stabilization of a Class of Nonlinear Systems : A Generalized Gronwall-Bellman Lemma Approach
Ndoye, Ibrahima UL; Zasadzinski, Michel; Darouach, Mohamed et al

in Nonlinear Analysis: Theory, Methods & Applications (2011), 74

In this paper, stabilizing control design for a class of nonlinear affine systems is presented by using a new generalized Gronwall-Bellman lemma approach. The nonlinear systems under consideration can be ... [more ▼]

In this paper, stabilizing control design for a class of nonlinear affine systems is presented by using a new generalized Gronwall-Bellman lemma approach. The nonlinear systems under consideration can be non Lipschitz. Two cases are treated for the exponential stabilization: the static state feedback and the static output feedback. The robustness of the proposed control laws with regards to parameter uncertainties is also studied. A numerical example is given to show the effectiveness of the proposed method. [less ▲]

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See detailExponential Synchronization for a New Class of Complex Dynamical Network with PIPC and Hybrid TVD
Pan, Lin UL; Voos, Holger UL; Darouach, Mohamed

in IEEE Multi-Conference on Systems and Control, MSC 2014 (2014, October 08)

Detailed reference viewed: 53 (6 UL)
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See detailExport Behavior and Firm Productivity in German Manufacturing - A Firm-Level Analysis
Hussinger, Katrin UL; Arnold, Jens Matthias

in Review of World Economics (2005)

This paper examines the causal relationship between productivity and exporting in German manufacturing. We find a causal link from high productivity to presence in foreign markets, as postulated by a ... [more ▼]

This paper examines the causal relationship between productivity and exporting in German manufacturing. We find a causal link from high productivity to presence in foreign markets, as postulated by a recent literature on international trade with heterogeneous firms. We apply a matching technique in order to analyze whether the presence in international markets enables firms to achieve further productivity improvements, without finding significant evidence for this. We conclude that high-productivity firms self-select themselves into export markets, while exporting itself does not play a significant role for the productivity of German firms. [less ▲]

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See detailExports versus FDI in German Manufacturing: Firm Performance and Participation in International Markets
Arnold, Jens Matthias; Hussinger, Katrin UL

in Review of World Economics (2010)

This paper tests some of the predictions of recent advances in trade theory that have focused on different trade patterns of firms within the same sector. Helpman, Melitz and Yeaple (2005) develop a model ... [more ▼]

This paper tests some of the predictions of recent advances in trade theory that have focused on different trade patterns of firms within the same sector. Helpman, Melitz and Yeaple (2005) develop a model in which innate productivity differences between firms determine the degree of international engagement of firms: The least productive firms produce for the domestic market, better performers engage in export activities, and the top firms establish foreign subsidiaries. Using German firm-level data from 1996 to 2002, we test this prediction using non-parametric methods, by examining the distribution functions of the three subsets of firms for stochastic dominance. Rather than just comparing first moments, this technique allows us to compare productivity over the entire distribution. Our results show robust support for the prediction from theory. [less ▲]

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See detailAs Exposições universais como mídia para a circulação transnacional de saberes sobre o ensino primário na segunda metade do século 19
Dittrich, Klaus UL

in História da educação (2013), 17(41), 213-234

The study examines the approach of cultural transfer thought to the educational field of universal exhibitions during the second half of the 19th century. The issue of knowledge circulation on education ... [more ▼]

The study examines the approach of cultural transfer thought to the educational field of universal exhibitions during the second half of the 19th century. The issue of knowledge circulation on education was adressed and, specially, the progress in primary education, made possible by the movement of some actors, as well as their specific goals around this subject. Focuses on analyzing four countries: Japan, France, Germany and the United States and discuss that cultural transfer on primary school was operated by the sections that, in the universal expositions, explored the progresses on pedagogical objects, written documents, designs of school buildings, as well as models adopted by the exchanges and learning experiences from abroad. Finally, verifies the different sociocultural influences that guided the search for models by those nations. [less ▲]

Detailed reference viewed: 127 (5 UL)