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See detailTesttheoretische Analyse des Lese-Kompetenztests (4. Schulstufe) gemäß Bildungsstandards (Phase 2:2007)
Gruber, Kathrin; Reif, Manuel; Hohensinn, Christine et al

Report (2007)

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See detailTesttheoretische Analyse des Lese-Kompetenztests (8. Schulstufe) gemäß Bildungsstandards (Phase 2:2007)
Gruber, Kathrin; Reif, Manuel; Hohensinn, Christine et al

Report (2007)

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See detailPour le multilinguisme: Exploiter à l’école la diversité des contextes européens. Rapport final de la facette 2.
Artus, Frédérique; Demeuse, Marc; Reichert, Monique UL et al

Report (2007)

Detailed reference viewed: 42 (4 UL)
See detailTesttheoretische Analyse des Lese-Kompetenztests (8. Schulstufe) gemäß Bildungsstandards (Phase 1: 2006)
Hohensinn, Christine; Reif, Manuel; Gruber, Kathrin et al

Report (2007)

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See detailEntwicklung von Standard-Tests zur Überprüfung der Bildungsstandards für Mathematik und Deutsch am Ende der 4. und 8. Schulstufe (Testungen 2006 und 2007)
Frebort, Martina; Khorramdel, Lale; Holocher-Ertl, Stefana et al

Report (2007)

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See detailTesttheoretische Analyse des Lese-Kompetenztests (4. Schulstufe) gemäß Bildungsstandards (Phase 1: 2006)
Hohensinn, Christine; Reif, Manuel; Gruber, Kathrin et al

Report (2007)

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See detailMeasurements of the acceleration due to gravity at the gravity laboratory of the National Institute of Metrological Research Turin (Italy)
D'Agostino, G.; Desogus, S.; Germak, A. et al

Report (2006)

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See detailUtilisation de l'implémentation de DTLS fournie par OpenSSL
Bernard, Nicolas UL

Report (2006)

Datagram Transport Layer Security (DTLS) is a recent prococol. It provides a cryptographical layer on the top of UDP. This protocol is implemented in the OpenSSL library but its use is not documented ... [more ▼]

Datagram Transport Layer Security (DTLS) is a recent prococol. It provides a cryptographical layer on the top of UDP. This protocol is implemented in the OpenSSL library but its use is not documented. This document aims to show how to use this implementation, by providing examples. [less ▲]

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See detailTHESEUS - Protein Structure Prediction at ZIB
May, Patrick UL; Steinke, Thomas

Report (2006)

THESEUS, the ZIB threading environment, is a parallel implementation of a protein threading based on a multi-queued branch-and-bound optimal search algorithm to find the best sequence-to-structure ... [more ▼]

THESEUS, the ZIB threading environment, is a parallel implementation of a protein threading based on a multi-queued branch-and-bound optimal search algorithm to find the best sequence-to-structure alignment through a library of template structures. THESEUS uses a template core model based on secondary structure definition and a scoring function based on knowledge-based potentials reflecting pairwise interactions and the chemical environment, as well as pseudo energies for homology detection, loop alignment, and secondary structure matching. The threading core is implemented in C++ as a SPMD parallization architecture using MPI for communication. The environment is designed for generic testing of different scoring functions, e.g. different secondary structure prediction terms, different scoring matrices and information derived from multiple sequence alignments. A validaton of the structure prediction results has been done on the basis of standard threading benchmark sets. THESEUS successfully participated in the 6th Critical Assessment of Techniques for Protein Structure Prediction (CASP) 2004. [less ▲]

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See detailProcess Reference Model "IT Grundschutz"
Asselborn, Jean-Claude; Dagorn, Nathalie; Niederkorn, Philippe et al

Report (2006)

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See detailSomething out of Nothing? Neoclassical Growth and the ‘Trivial’ Steady State
Hakenes, Hendrik; Irmen, Andreas UL

Report (2006)

A common perception about the neoclassical growth model is that an economy devoid of capital cannot evolve to strictly positive levels of output if capital is essential. We challenge this view by positing ... [more ▼]

A common perception about the neoclassical growth model is that an economy devoid of capital cannot evolve to strictly positive levels of output if capital is essential. We challenge this view by positing a broad class of production functions, encompassing the neoclassical production function, that—surprisingly—show that a take-off is possible even though the initial capital stock is zero and capital is essential. Since the marginal product of capital is initially infinite, the “trivial” steady state becomes so unstable that the solution to the equation of motion involves the possibility of a take-off. When it happens, the take-off is spontaneous: there is no causality, not even randomness. [less ▲]

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See detailFamily-Type Subsistence Incomes
Koulovatianos, Christos UL; Schroeder, Carsten; Schmidt, Ulrich

Report (2006)

Different family types may have a fixed flow of consumption costs, related to subsistence needs. We use a survey method in order to identify and estimate such a fixed component of spending for different ... [more ▼]

Different family types may have a fixed flow of consumption costs, related to subsistence needs. We use a survey method in order to identify and estimate such a fixed component of spending for different families. Our method involves making direct questions about the linkup between aggregate disposable family income and well-being for different family types. Conducting our survey in six countries, Germany, France, Cyprus, China, India and Botswana, we provide evidence that fixed costs of consumption are embedded in welfare evaluations of respondents. More precisely, we find that the formalized relationship between welfare-retaining aggregate family incomes across different family types, suggested by Donaldson and Pendakur (2005) and termed “Generalized Absolute Equivalence Scale Exactness,” is prevalent and robust in our data. We use this relationship to identify subsistence needs of different family types and to calculate income inequality. [less ▲]

Detailed reference viewed: 91 (2 UL)
See detailInvestment in a Monopoly with Bayesian Learning
Koulovatianos, Christos UL; Mirman, Leonard J.; Santugini, Marc

Report (2006)

We study how learning affects an uninformed monopolist's supply and investment decisions under multiplicative uncertainty in demand. The monopolist is uninformed because it does not know one of the ... [more ▼]

We study how learning affects an uninformed monopolist's supply and investment decisions under multiplicative uncertainty in demand. The monopolist is uninformed because it does not know one of the parameters defining the distribution of the random demand. Observing prices reveals this information slowly. We first show how to incorporate Bayesian learning into dynamic programming by focusing on sufficient statistics and conjugate families of distributions. We show their necessity in dynamic programming to be able to solve dynamic programs either analytically or numerically. This is important since it is not true that a solution to the infinite-horizon program can be found either analytically or numerically for any kinds of distributions. We then use specific distributions to study the monopolist?s behavior. Specifically, we rely on the fact that the family of normal distributions with an unknown mean is a conjugate family for samples from a normal distribution to obtain closed- form solutions for the optimal supply and investment decisions. This enables us to study the effect of learning on supply and investment decisions, as well as the steady state level of capital. Our findings are as follows. Learning affects the monopolist's behavior. The higher the expected mean of the demand shock given its beliefs, the higher the supply and the lower the investment. Although learning does not affect the steady state level of capital since the uninformed monopolist becomes informed in the limit, it reduces the speed of convergence to the steady state. [less ▲]

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See detailAltenstudie 2006 Feldkirchen
Scheu, Bringfriede; Autrata, Otger; Hoenig, Barbara UL

Report (2006)

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See detailDanser et après ?
Durand, Marc; de Saint-Georges, Ingrid UL; Laurent, Elisabeth et al

Report (2006)

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See detailA computational approach to microRNA detection
May, Patrick UL; Bauer, Markus; Köberle, Christian et al

Report (2006)

During the last few years more and more functionalities of RNA have been discovered that were previously thought of being carried out by proteins alone. One of the most striking discoveries was the de ... [more ▼]

During the last few years more and more functionalities of RNA have been discovered that were previously thought of being carried out by proteins alone. One of the most striking discoveries was the de tection of microRNAs, a class of noncoding RNAs that play an important role in post-transcriptional gene regulation. Large-scale analyses are needed for the still increasingly growing amount of sequen ce data derived from new experimental technologies. In this paper we present a framework for the detection of the distinctive precursor structure of microRNAS that is based on the well-known Smith-Wat erman algorithm and various filtering steps. We conducted experiments on real genomic data and we found several new putative hits for microRNA precursor structures. [less ▲]

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See detailHow is agency possible? Towards an ecological understanding of agency-as-achievement
Biesta, Gert UL; Tedder, M.

Report (2006)

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See detailEnjeux de coopération métropolitaine au sein de l’Aire Ligérienne. Synthèse et analyse des documents abordant l’aire ligérienne
Blondel, Cyril UL; Demazière, Christophe; Carrière, Jean-Paul et al

Report (2006)

Detailed reference viewed: 31 (0 UL)
See detailGirls' Day 2006. Eine Evaluation
Schumacher, Anette UL; Wagener, Renée UL

Report (2006)

Detailed reference viewed: 34 (1 UL)
See detailA typed attributed Graph Grammar for syntax-directed editing of UML Sequence Diagrams
Hermann, Frank UL

Report (2006)

Success and efficiency of software and system design fundamentally relies on its models. The more they are based on formal methods the more they can be automatically transformed to execution models and ... [more ▼]

Success and efficiency of software and system design fundamentally relies on its models. The more they are based on formal methods the more they can be automatically transformed to execution models and finally to implementation code. This paper presents model transformation and model integration as specific problem within bidirectional model transformation, which has shown to support various purposes, such as analysis, optimization, and code generation. The main purpose of model integration is to establish correspondence between various models, especially between source and target models. From the analysis point of view, model integration supports correctness checks of syntactical dependencies between different views and models. The overall concept is based on the algebraic approach to triple graph grammars, which are widely used for model transformation. The main result shows the close relationship between model transformation and model integration. For each model transformation sequence there is a unique model integration sequence and vice versa. This is demonstrated by a quasi-standard example for model transformation between class models and relational data base models. [less ▲]

Detailed reference viewed: 67 (4 UL)
See detailHerausforderung Hauptschule II – Eltern als Partner der schulischen Berufsorientierung
Wetzstein, Thomas; Erbeldinger, Patricia; Hilgers, Judith et al

Report (2006)

Detailed reference viewed: 48 (3 UL)
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See detailProcess Reference Model "Mehari"
Asselborn, Jean-Claude; Dagorn, Nathalie; Niederkorn, Philippe et al

Report (2006)

Detailed reference viewed: 52 (0 UL)
See detailEuropean Union foreign direct investment yearbook 2006
Hult, Merja; Margherita, Antonia UL; Foltête, Anne et al

Report (2006)

The direct investment pocketbook provides users with analytical aspects of foreign direct investment stocks, flows and income for the European Union. The pocketbook has a simple objective: to provide ... [more ▼]

The direct investment pocketbook provides users with analytical aspects of foreign direct investment stocks, flows and income for the European Union. The pocketbook has a simple objective: to provide political and corporate decision-makers with high quality statistical information on direct investment. [less ▲]

Detailed reference viewed: 53 (4 UL)
See detailTutorial d'installation de la distribution Debian
Varrette, Sébastien UL

Report (2005)

Detailed reference viewed: 29 (0 UL)
See detailIntroduction aux réseaux de tri tolérants aux fautes
Varrette, Sébastien UL

Report (2005)

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See detailCorporate Governance in Cyberspace - A Blueprint for Virtual Shareholder Meetings
Zetzsche, Dirk Andreas UL

Report (2005)

This paper analyses the rules regarding the internet-based exercise of shareholder rights for public corporations incorporated in Canada, France, Germany, the U.S. (DelGCL & RMBCA), the UK and Switzerland ... [more ▼]

This paper analyses the rules regarding the internet-based exercise of shareholder rights for public corporations incorporated in Canada, France, Germany, the U.S. (DelGCL & RMBCA), the UK and Switzerland. The traditional doctrine associates information, communication and voting with shareholder meetings. In addition, shareholder meetings regularly prompt reviews of management's activities exercised on behalf of shareholders by accountants or the judiciary. The analysis reveals that the current regimes of shareholder meetings merely provide for voting and information in the context of a digital environment, while communication and review is usually not replicated. The lack of all functions of traditional shareholder meetings is one reason of why exclusively virtual shareholder meetings have not gained widely spread acceptance across jurisdictions. Another reason is that a well-fitting design for the web-based exercise of shareholder rights does not yet exist. Thus, the paper develops an advisable design of Virtual Shareholder Meetings that replicates all for functions of traditional shareholder meetings, while it is likely to reduce shareholder apathy at the same time. It argues that enabling more frequent opportunities for voting is the logical consequence of the developments of continuous disclosure requirements and continuous buy/hold/sell-decisions by market participants. Therefore, the virtual exercise of shareholder rights should be achieved through (1) liberalizing currently existing legislative and practical barriers, and in particular, time and place restrictions on shareholder meetings; (2) re-integrating analyst and institutional investor meetings in the process of shareholder meetings, and (3) substituting for the traditional face-to-face accountability of managers to shareholders through specific electronic means. The latter involves, specifically, the use of RSS-Feed and XBRL-technologies for gathering and evaluating information, the use of the company's website as the central communication platform for management to shareholders and shareholders to shareholders, and the election of an independent shareholder rights manager (firm) by the shareholder body with procedural, technical, and organizational authority for organizing the exercise of shareholder rights. Ideally, the blueprint presented herein achieves the harmonization of voting behavior and market reactions, thereby furthering market efficiency. [less ▲]

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See detailCompétitivité de l'économie luxembourgeoise
Bourgain, Arnaud UL; Bley, Laurent; Pieretti, Patrice UL et al

Report (2005)

Detailed reference viewed: 44 (0 UL)
See detailNeoclassical Growth and the 'Trivial' Steady State
Hakenes, Hendrik; Irmen, Andreas UL

Report (2005)

If capital is an essential input, the neoclassical growth model has a steady state with zero capital. From this, one is inclined to conclude that an economy starting without capital can never grow. We ... [more ▼]

If capital is an essential input, the neoclassical growth model has a steady state with zero capital. From this, one is inclined to conclude that an economy starting without capital can never grow. We challenge this view and claim that, if the production function satisfies the Inada conditions, a take-off is possible even though the initial capital stock is zero and capital is essential. Since the marginal product of capital is initially infinite, the ‘trivial’ steady state becomes so unstable that the solution to the equation of motion involves the possibility of a take-off, even without capital. When it happens, the take-off is spontaneous; there is no causality. [less ▲]

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See detailLes représentations sociales de la médiation au Luxembourg
Houssemand, Claude UL; Liviero, K

Report (2005)

Detailed reference viewed: 36 (1 UL)
See detailPreferences and the Dynamic Representative Consumer
Koulovatianos, Christos UL

Report (2005)

This paper provides families of time-separable, twice continuously differentiable, and strictly concave utility functions of a group of consumers that are both suffcient and necessary in order to have ... [more ▼]

This paper provides families of time-separable, twice continuously differentiable, and strictly concave utility functions of a group of consumers that are both suffcient and necessary in order to have linear aggregation in a single-commodity-type deterministic dynamic environment, in the presence of consumer wealth-, labor-productivity, and preference heterogeneity, for alternative settings where the rates of time preference can be the same or different across consumers. The employed concept of linear aggregation pertains the existence of a representative consumer with a time-separable utility function. It is proved that when the rates of time preference are choice-independent and heterogeneous across consumers, a representative consumer exists if, and only if, the momentary utility functions of all consumers are exponential. Results are also provided for, (i) common across consumers choice-independent rates of time preference, and, (ii) heterogeneous choice-dependent rates of time preference, and compared with previously identified sufficient conditions for aggregation in the existing literature. [less ▲]

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See detailEuropean Union foreign direct investment yearbook 2005
Passerini, Paolo; Margherita, Antonia UL; Kounadis, Vasileios et al

Report (2005)

In the European Union direct investment pocketbook 2005, Eurostat presents and analyses harmonised statistics on FDI flows, stocks and income for the EU as a whole.

Detailed reference viewed: 28 (5 UL)
See detailLess-educated Young Adults Face Challenging Transitions from School to Work
Hillmert, Steffen; Powell, Justin J W UL

Report (2005)

This expert report summarizes recent social science research literature on school-to-work transitions, emphasizing the opportunity, experience and performance gaps between the highly skilled and low ... [more ▼]

This expert report summarizes recent social science research literature on school-to-work transitions, emphasizing the opportunity, experience and performance gaps between the highly skilled and low skilled. Questions addressed in this report include: which youth have a higher risk of failing to transition successfully from school to vocational training, and what are the pathways that lead to a higher probability of low education attainment? Which solutions to these difficulties have been proposed? Which factors may contribute to low qualified youth’s successful entry into work? To answer such questions, the report reviews current international research results and shows how these studies can be used in evaluating the situations faced by at-risk youth. Where possible, the findings for Germany are embedded within a broader international comparison to illustrate a variety of approaches to the study of transitions from the world of schooling and training to the world of work, including training schemes and programs designed to serve at-risk youth. [less ▲]

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See detailCompétitivité de l’économie luxembourgeoise 2004
Bourgain, Arnaud UL; Bley, Laurent; Pieretti, Patrice UL et al

Report (2005)

Detailed reference viewed: 29 (1 UL)
See detailThe Effects of Market Structure on Industry Growth: Rivalrous Non-excludable Capital
Koulovatianos, Christos UL; Mirman, Leonard J.

Report (2005)

We analyze imperfect competition in dynamic environments where firms use rivalrous but nonexcludable industry-specific capital that is provided exogenously. Capital depreciation depends on utilization, so ... [more ▼]

We analyze imperfect competition in dynamic environments where firms use rivalrous but nonexcludable industry-specific capital that is provided exogenously. Capital depreciation depends on utilization, so firms influence the evolution of the capital equipment through more or less intensive supply in the final-goods market. Strategic incentives stem from, (i) a dynamic externality, arising due to the non-excludability of the capital stock, leading firms to compete for its use (rivalry), and, (ii) a market externality, leading to the classic Cournot-type supply competition. Comparing alternative market structures, we isolate the effect of these externalities on strategies and industry growth. [less ▲]

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See detailCompétitivité de l’économie luxembourgeoise 2003
Bourgain, Arnaud UL; Cardi, Olivier; Pieretti, Patrice UL et al

Report (2004)

Detailed reference viewed: 38 (0 UL)
See detailEndogenous Public Policy and Long-Run Growth
Koulovatianos, Christos UL; Mirman, Leonard J.

Report (2004)

. We study the determinants of voting outcomes on the provision of public consumption through marginal income taxes in the context of the simple linear growth model. We focus on how the dynamic ... [more ▼]

. We study the determinants of voting outcomes on the provision of public consumption through marginal income taxes in the context of the simple linear growth model. We focus on how the dynamic politicoeconomic equilibrium maps the economic fundamentals to policies and long-run growth. We find that in a deterministic growth environment voters internalize, although imperfectly, the deadweight losses of taxation and vote for lower taxes when the productivity of capital is higher. Therefore, the politicoeconomic channel reinforces the positive role of productivity for growth. In a stochastic environment, we find that if business cycles are driven by productivity shocks in the endogenous growth framework, equilibrium policies imply that taxes should fall in high growth periods and rise in low-growth periods. In line with existing evidence, our model predicts procyclical public consumption and countercyclical public consumption GDP shares. [less ▲]

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See detailÉtude sur l'impact de l'aide médico-psychologique aux personnes désirant arrêter de fumer
Mancuso, Giovanna UL; Coulon, Juan; Autier, Philippe et al

Report (2004)

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See detailL’école connaît la violence qu’elle mérite
Fehlen, Fernand UL

Report (2004)

Detailed reference viewed: 61 (1 UL)