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See detailOn symbolic computations with Chern classes: remarks on the library chern.lib for Singular
Iena, Oleksandr UL

E-print/Working paper (2015)

We provide an informal overview of the algorithms used for computing with Chern classes in the library chern.lib for the computer algebra system Singular.

Detailed reference viewed: 137 (19 UL)
See detailLocal universality of the number of zeros of random trigonometric polynomials with continuous coefficients
Azais, Jean-Marc; Dalmao, Federico; Leon, Jose et al

E-print/Working paper (2015)

Detailed reference viewed: 60 (0 UL)
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See detailEspaces de frontière. Penser et analyser la frontière en tant qu’espace
Wille, Christian UL

E-print/Working paper (2015)

Les frontières se différencient non seulement en fonction des domaines d'étude où elles sont opérantes ou dans lesquels elles se constituent, mais également en termes de modes de (re)production et de ... [more ▼]

Les frontières se différencient non seulement en fonction des domaines d'étude où elles sont opérantes ou dans lesquels elles se constituent, mais également en termes de modes de (re)production et de formes. Cette communication traitera en premier lieu de la forme de la frontière, sachant que ce n’est pas la frontière territoriale en tant que ligne qui importera, mais plutôt son caractère zonal et la question de savoir comment il est possible de l'aborder dans une perspective théorico-conceptuelle aux fins de l’étude empirique. Il est plus judicieux de considérer les frontières territoriales comme zones ou espaces, la métaphore de la ligne s'avérant une pure fiction. Jusqu’au XVIIIe siècle, les frontières étaient conçues comme des espaces de contact et des zones de transition (convoitées), ce n’est qu’avec l’avènement d’États nationaux modernes que s’établit le concept de frontière comme ligne – sans qu’elle n’ait perdu empiriquement son caractère zonal. C’est ce qu’on peut notamment constater dans les régions transfrontalières où les frontières territoriales ne peuvent se réduire à leur fonction de différenciation ou de passerelle, mais au contraire s’élargissent – comme le montre la mobilité transfrontalière des travailleurs, des consommateurs ainsi que la mobilité résidentielle – se transformant ainsi en zones de l'entre-deux. Ces zones ne peuvent pas être concédées aux espaces situés en deçà et au-delà d’une frontière territoriale, elles représentent en revanche des espaces autonomes, lesdits « espaces de frontière » qui revêtent une identité liminale. L'objet de cette communication est de savoir comment il est possible de décrire et d'étudier de tels espaces que l'on peut observer comme productions quotidiennes. Il s’agit (1) de percevoir de manière conceptuelle le caractère zonal de la frontière, donc la dimension spatiale, (2) le potentiel innovateur et imprévisible de la liminalité et ainsi la contingence sociale. La géographie sociale et la sociologie de la culture en livrent des points de départ pertinents. La mise en relation d’approches concernant l’espace et la pratique sociale issues de ces deux disciplines représente la base du modèle « espaces de frontière » qui permet de penser les frontières en tant qu’espaces et met en place une heuristique destinée à l’étude de constitutions spatiales centrées sur le sujet comme (re)productions des frontières. Les pratiques sociales, la connaissance pratique ainsi que les aspects physico-matériels et socio-structurels tels qu'ils sont appropriés et engendrés par les « frontaliers » dans des références transfrontalières, font partie des catégories d'analyse. [less ▲]

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See detailLaw, Public Interest and Interpretation: Prolegomena of a Normative Framework on Administrative Discretion in the EU
Mendes, Joana UL

E-print/Working paper (2015)

It is conventionally assumed that administrative discretionary decisions are determined by political and expert-driven considerations and that law’s structuring and constraining capacity in that regard is ... [more ▼]

It is conventionally assumed that administrative discretionary decisions are determined by political and expert-driven considerations and that law’s structuring and constraining capacity in that regard is and should be limited. Law defines a space within which discretionary choices are irrelevant to law because they have the same legal value. These tenets have shaped both the ways the Court of Justice of the European Union has approached judicial review of discretion and, more generally, the way law is perceived to structure administrative discretion in the Member States and also in the EU. However, the recent expansion of the regulatory powers of the European Union justifies revisiting these basic axioms. In particular, how far should discretion be shielded from the values that EU law conveys? This paper proposes a normative elaboration of a core idea of public law to stress that law twins administrative discretion with a duty of regard to pre-determined public interests. On this basis, legal rules are able to provide a yardstick of critique of decisions that administrative officials adopt within spaces of discretion. An analysis of the Meroni judgment shows how this argument applies to EU law. But this claim only prepares the ground for a more complex inquiry: How does law operate – and how should it operate – within the spaces of administrative discretion, and how should courts review discretionary decisions? Administrative decision-makers construct the law in a specific institutional context in view of their specific tasks. Arguably, one should understand the specific processes through which they interpret the law to know how law may provide substantive criteria that guide discretionary choices. Such understanding would also be the basis to define and assess suitable degrees of judicial review of administrative discretion. One could then make a critical assessment – difficult to make at present – of the shifting boundaries between spaces of discretion and of judicial review that the dictum “manifest error of assessment, misuse of power or excess of power” conceals. This latter argument draws on the debate among US administrative law scholars on agency interpretation of statutes, but it is also mindful of conceptual distinctions that have prevailed in legal scholarship in Europe. The paper defines the prolegomena of a normative framework of a broader research project. It is work in progress. [less ▲]

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See detailLes petites villes en Lotharingie. Un bilan subjectif de 25 ans de recherches
Pauly, Michel UL

E-print/Working paper (2015)

Detailed reference viewed: 56 (1 UL)
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See detailInequality of opportunity during the great recession in Uganda
Palmisano, Flaviana UL; Brunori, Paolo; Peragine, Vito

E-print/Working paper (2015)

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See detailMonetary Policy with 100% Reserve Banking: An Exploration
Mehra, Rajnish UL; Wessel, Ryan; Prescott, Edward C.

E-print/Working paper (2015)

Detailed reference viewed: 42 (0 UL)
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See detailRegulator Imposes Warning on RTL for Breach of Rules on Protection of Minors over Syrian War Coverage
Cole, Mark UL; Metzdorf, Jenny

E-print/Working paper (2015)

Detailed reference viewed: 64 (3 UL)
See detailLegal Manifestations of the Emergency in National Euro Crisis Law
Coutts, Stephen; Díez Sánchez, Leticia; Marketou, Afroditi UL et al

E-print/Working paper (2015)

Most constitutions foresee a 'state of emergency' associated with the existence of an armed conflict. Paradoxically, modern societies seem to be permanently confronted with genuine emergencies ... [more ▼]

Most constitutions foresee a 'state of emergency' associated with the existence of an armed conflict. Paradoxically, modern societies seem to be permanently confronted with genuine emergencies increasingly removed from the threat of actual, physical violence. The Eurozone crisis can be said to have accentuated this, as the immense pressures from financial markets have turned the control of public finances into a struggle for the survival of the affected States. The present paper explores the legal manifestations of emergency in the domestic law of Greece, Italy, Spain and Ireland. These countries have all been hit by the Eurozone crisis (albeit in different manners) and have had to accommodate external oversight in their crisis management. The adoption of emergency measures for tackling the economic upheavals has been diverse across the case studies, although all have in common the emergence of a prominent role for the executive in the aftermath of the Eurozone crisis. [less ▲]

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See detailMultilingualism in advertising and a shifting balance of languages in Luxembourg
De Bres, Julia UL

E-print/Working paper (2015)

Much research on multilingualism in advertising has been undertaken in comparatively mono-lingual settings. Whereas such research may provide insights into the connotations of lan-guages used in ... [more ▼]

Much research on multilingualism in advertising has been undertaken in comparatively mono-lingual settings. Whereas such research may provide insights into the connotations of lan-guages used in advertising, research in more multilingual contexts can also provide different kinds of insights regarding the relative status of languages in a multilingual environment. This article focuses on multilingualism in written advertising in the highly multilingual setting of Luxembourg, where the language situation is currently undergoing significant change due to patterns of globalisation and migration. Analysis of a mixed corpus of advertisements, includ-ing 1,038 advertisements in the free daily newspaper l’Essentiel from 2009 to 2011, as well as selected further advertisements from elsewhere within Luxembourg’s linguistic landscape, reflects a move within Luxembourg in general from a longstanding trilingualism in French, German and Luxembourgish to different kinds of multilingualism, incorporating both the presence of new languages and changes in the relative roles of French, German and Luxem-bourgish. Particularly significant is the presence of Luxembourgish as a written language of advertising, whereas it traditionally functioned mainly as a spoken language in Luxembourg. The article presents the results of a quantitative and qualitative analysis of the advertisements and discusses how multilingualism in written advertising provides a pertinent window on changing forms of multilingualism in Luxembourg. [less ▲]

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See detailDraft Grand-Ducal Regulation on Protection of Minors in Audiovisual Media Services
Cole, Mark UL; Metzdorf, Jenny

E-print/Working paper (2015)

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See detailIntertemporal pro-poorness
Palmisano, Flaviana UL; Bresson, Florent; Duclos, Jean-Yves

E-print/Working paper (2015)

Detailed reference viewed: 105 (1 UL)
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See detailIncreases in well-being after transition to retirement for unemployed. Catching up with formerly employed persons.
Ponomarenko, Valentina UL; Leist, Anja UL; Chauvel, Louis UL

E-print/Working paper (2015)

This paper examines the extent to which well-being levels change in the transition to retirement depending on transitioning from being employed, unemployed, or economically inactive. Whereas transitioning ... [more ▼]

This paper examines the extent to which well-being levels change in the transition to retirement depending on transitioning from being employed, unemployed, or economically inactive. Whereas transitioning from employment to unemployment has been found to cause an increase in depressive symptoms or decline in life satisfaction with more time spent in unemployment, it is not clear to which extent transitioning from unemployment to retirement affects well-being levels compared to retiring after being employed or economically inactive. We use two waves of the Survey of Health, Ageing and Retirement in Europe monitoring respondents transitioning to retirement and use life satisfaction as well-being measure. The effect of the transition is captured with a difference-in-difference like approach to test if the change in well-being after retirement is different for persons who were formerly unemployed or inactive, respectively, compared to formerly employed retirees. Results indicate that retiring from unemployment is associated with an increase in life satisfaction, but presents mainly a catching-up effect compared to employed persons transitioning to retirement. Retirement from labour market inactivity, especially sick leave, does not lead to significant changes in well-being. Findings are robust to selection into unemployment and country differences. As well-being of unemployed persons recovers after transitioning to retirement, especially the currently unemployed population should be supported to prevent detrimental consequences of economically unfavourable conditions and lower well-being. [less ▲]

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See detailInvariant connections and PBW theorem for Lie groupoid pairs
Laurent-Gengoux, Camille; Voglaire, Yannick UL

E-print/Working paper (2015)

Given a closed wide Lie subgroupoid $\mathbf{A}$ of a Lie groupoid $\mathbf{L}$, i.e. a Lie groupoid pair, we interpret the associated Atiyah class as the obstruction to the existence of $\mathbf{L ... [more ▼]

Given a closed wide Lie subgroupoid $\mathbf{A}$ of a Lie groupoid $\mathbf{L}$, i.e. a Lie groupoid pair, we interpret the associated Atiyah class as the obstruction to the existence of $\mathbf{L}$-invariant fibrewise affine connections on the homogeneous space $\mathbf{L}/\mathbf{A}$. For Lie groupoid pairs with vanishing Atiyah class, we show that the left $\mathbf{A}$-action on the quotient space $\mathbf{L}/\mathbf{A}$ can be linearized. In addition to giving an alternative proof of a result of Calaque about the Poincare-Birkhoff-Witt map for Lie algebroid pairs with vanishing Atiyah class, this result specializes to a necessary and sufficient condition for the linearization of dressing actions, and gives a clear interpretation of the Molino class as an obstruction to simultaneous linearization of all the monodromies. In the course of the paper, a general theory of connections and connection forms on Lie groupoid principal bundles is developed. Also, a computational substitute to the adjoint action (which only exists "up to homotopy") is suggested. [less ▲]

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See detailWohnmobilität in der Großregion - eine interurbane Diskursanalyse
Christmann, Nathalie UL

E-print/Working paper (2015)

“Je t’aime, moi non plus” : this is how the French newspaper L’Express (2011, p. II) summarises the transnational linkages of Luxembourg with its neighbouring countries. On the one hand, the ‘economic ... [more ▼]

“Je t’aime, moi non plus” : this is how the French newspaper L’Express (2011, p. II) summarises the transnational linkages of Luxembourg with its neighbouring countries. On the one hand, the ‘economic engine’ Luxembourg offers workplaces for many commuters, positively affecting the development of this European cross-border polycentric metropolitan region; on the other hand, negative consequences such as the overcrowded real estate mar-ket in Luxembourg continue beyond the national border and affect neighbouring housing markets. The ‘2020 Concept for the Region Trier’ shows that city councils perceive the prox-imity to Luxembourg as an opportunity for the development of the city. Simultaneously, lo-cals might feel displaced due to increasing rents and house prices, and develop resentment vis-à-vis their new neighbours, coming either from Luxembourg, or being Belgian, German or French nationals (labour migrants) that have moved to the border region to work in the Grand Duchy of Luxembourg, thus disposing of higher purchase power. Depending on the context, similar effects can thus be perceived very differently by city councils or planners and the local population. So far, studies dealing with the processes of transmigration have mostly focussed on indi-vidual motives of migrants, whereas impacts on the regions of destination have not been explored. The aim of this study is to explore ongoing discourses dealing with spatial impacts in relation to urban housing markets within the Greater Region. The focus will be on the cit-ies Arlon (BE), Metz and Thionville (FR), and Trier (DE). Therefore mixed methods will be de-ployed. Firstly, a quantitative analysis is planned to reveal the magnitude and the spatial distribution of the (cross-border) residential mobility. The evolution of housing prices and rents as well as population dynamics will be examined. Secondly, ongoing discourses and the changes of life-worlds will be studied using quantitative methods as well as qualitative methods, such as content analysis, to review the guiding principles of municipal policy and urban planning documents. A quantitative analysis of local newspapers will be conducted to analyse public opinion. A content analysis of this material will follow. The method mix allows us to better understand “material” evolutions and to trace the current discourses within this field. Discourse approaches have become common in interdis-ciplinary social science academic research. However, there are no established theoretical and methodological guidelines for applying these approaches. This project has to deal with this situation and to take into account different cultural backgrounds and discussion levels. This study will help to frame today’s situation and aims to develop sustainable solutions for future urban planning. [less ▲]

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See detailLanguage profiles and practices of cross-border workers in Luxembourg
Franziskus, Anne UL; De Bres, Julia UL

E-print/Working paper (2015)

This paper summarises the findings of a questionnaire study investigating the language pro-files and practices of cross-border workers in Luxembourg. The study was undertaken in 2009 and includes 128 ... [more ▼]

This paper summarises the findings of a questionnaire study investigating the language pro-files and practices of cross-border workers in Luxembourg. The study was undertaken in 2009 and includes 128 cross-border workers from 35 workplaces from different sectors, including the health sector, higher education and research, the manufacturing industry and the service sector. The study suggests that all the participants have a multilingual profile and have learnt at least one language in addition to their first one in the course of their life. A second result is that French is used in all the workplaces under investigation. But, at the same time, the major-ity of the cross-border worker participants have a multilingual professional life, most of them using more than one language at work on an everyday basis. This multilingualism comes in the form of a wide range of multilingual practices, including language accommodation, use of a lingua franca, code-switching and receptive multilingualism. Furthermore, two thirds of the participants report having learnt Luxembourgish either formally or informally, and half of those who have not learnt it, would like to do so in the future. [less ▲]

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See detailRadical Innovation – A domain of SMEs? A novel test of the Schumpeterian Hypothesis
Abou Lebdi, Nabil UL

E-print/Working paper (2015)

The Schumpeterian Hypothesis has been subject to a plethora of research aiming at the provision of new insights to the relationship of innovation on firm size. Utilizing a panel of German companies in ... [more ▼]

The Schumpeterian Hypothesis has been subject to a plethora of research aiming at the provision of new insights to the relationship of innovation on firm size. Utilizing a panel of German companies in manufacturing industries from 1993-2011, this analysis explicitly distinguishes between radical and incremental innovation output. It reveals that firm size and radical innovation share an overall negative relationship, while the relationship between firm size and incremental innovation is positive. These results provide a novel explanation for the often-reported non-linear relationship between firm size and innovation. [less ▲]

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See detailAccelerating the DC algorithm for smooth functions
Aragón Artacho, Francisco Javier UL; Fleming, Ronan MT UL; Phan, Vuong UL

E-print/Working paper (2015)

We introduce two new algorithms to minimise smooth difference of convex (DC) functions that accelerate the convergence of the classical DC algorithm (DCA). We prove that the point computed by DCA can be ... [more ▼]

We introduce two new algorithms to minimise smooth difference of convex (DC) functions that accelerate the convergence of the classical DC algorithm (DCA). We prove that the point computed by DCA can be used to define a descent direction for the objective function evaluated at this point. Our algorithms are based on a combination of DCA together with a line search step that uses this descent direction. Convergence of the algorithms is proved and the rate of convergence is analysed under the Łojasiewicz property of the objective function. We apply our algorithms to a class of smooth DC programs arising in the study of biochemical reaction networks, where the objective function is real analytic and thus satisfies the Łojasiewicz property. Numerical tests on various biochemical models clearly show that our algorithms outperforms DCA, being on average more than four times faster in both computational time and the number of iterations. The algorithms are globally convergent to a non-equilibrium steady state of a biochemical network, with only chemically consistent restrictions on the network topology. [less ▲]

Detailed reference viewed: 171 (16 UL)
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See detailNew Grand-Ducal Regulation on fees for audio and audiovisual media service providers
Cole, Mark UL; Metzdorf, Jenny

E-print/Working paper (2015)

Detailed reference viewed: 69 (7 UL)
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See detailBubbles and Trading Frenzies: Evidence from the Art Market
Penasse, Julien UL; Renneboog, Luc

E-print/Working paper (2015)

Detailed reference viewed: 34 (0 UL)
See detailHow a Brexit Would Influence the British Economy. A Four-Part Brexit Blog
Herzog, Mechthild UL

E-print/Working paper (2015)

Detailed reference viewed: 250 (3 UL)
See detailType A images of Galois representations and maximality
Hui, Chun Yin UL; Larsen, Michael

E-print/Working paper (2015)

Detailed reference viewed: 94 (0 UL)
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See detailCompetition among Coalitions in a Cournot Industry: A Validation of the Porter Hypothesis
Tampieri, Alessandro UL; Lambertini, Luca; Pignataro, Giuseppe

E-print/Working paper (2015)

Detailed reference viewed: 79 (7 UL)
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See detailVolatility Concepts and Risk Management Tools
Lehnert, Thorsten UL; Blanchard,, Gildas; Dennis, Bams,

E-print/Working paper (2015)

Detailed reference viewed: 74 (8 UL)
See detailMuseums: Luxembourg
Kmec, Sonja UL

E-print/Working paper (2015)

Detailed reference viewed: 73 (1 UL)
See detailHistorical societies: Luxembourg
Kmec, Sonja UL

E-print/Working paper (2015)

Detailed reference viewed: 67 (1 UL)
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See detailEuro Crash Risk
Kräussl, Roman UL; Lehnert, Thorsten UL; Sigita, Senulyte

E-print/Working paper (2015)

Detailed reference viewed: 50 (0 UL)
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See detailFrom Time Varying Risk-Aversion and Sentiment to Anomalies in Market
Lehnert, Thorsten UL; Honarvar, Iman; Bams, Dennis

E-print/Working paper (2015)

Detailed reference viewed: 65 (0 UL)
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See detailGauweiler and OMT: Lessons for EU Public Law and the European Economic and Monetary Union
Hofmann, Herwig UL

E-print/Working paper (2015)

Do exceptional situations make exceptional good or exceptionally bad law? This is an old question often asked anew – especially in the context of the post-2008 economic crises travails of the European ... [more ▼]

Do exceptional situations make exceptional good or exceptionally bad law? This is an old question often asked anew – especially in the context of the post-2008 economic crises travails of the European Economic and Monetary Union (EMU). The legal disputes which resulted from differing opinions about how to solve the crises and also how, incidentally, to improve the EMU’s governance have reached the Court of Justice of the European Union (CJEU). The most prominent case to date is the so called Gauweiler case, a preliminary reference procedure initiated by the German Constitutional Court, the Bundesverfassungsgericht (BVerfG). [less ▲]

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See detailThe Impact of Uncertainty in the Oil and Gold Market on the Cross-Section
Lehnert, Thorsten UL; Bams, Dennis; Blanchard, Gildas et al

E-print/Working paper (2015)

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See detailIs Venture Capital really a Local Business? Evidence from U.S. Cross-Border Investment
Kräussl, Roman UL; Wuebker,, Robert; Schulze, William

E-print/Working paper (2015)

Detailed reference viewed: 126 (0 UL)
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See detailOptimal Berry-Esseen bounds on the Poisson space.
Peccati, Giovanni UL; Azmoodeh, Ehsan UL

E-print/Working paper (2015)

Detailed reference viewed: 62 (0 UL)
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See detailThe projective linear supergroup and the SUSY-preserving automorphisms of P^1|1
Kwok, Stephen UL

E-print/Working paper (2015)

The purpose of this paper is to describe the projective linear supergroup, its relation with the automorphisms of the projective superspace and to determine the supergroup of SUSY preserving automorphisms ... [more ▼]

The purpose of this paper is to describe the projective linear supergroup, its relation with the automorphisms of the projective superspace and to determine the supergroup of SUSY preserving automorphisms of ${\mathbf P}^{1|1}$ [less ▲]

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See detailToward a pecking order theory of strategic resource deployment
Kräussl, Roman UL; Schulze, William; Deeds, David et al

E-print/Working paper (2015)

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See detailThe “Tone Effect” of News on Investor Beliefs: An Experimental Approach
Kräussl, Roman UL; Bosman,, Ronald; Schulze,, William et al

E-print/Working paper (2015)

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See detailFlat Z-graded connections and loop spaces
Arias Abad, Camilo; Schatz, Florian UL

E-print/Working paper (2015)

The pull back of a flat bundle E→X along the evaluation map π:LX→X from the free loop space LX to X comes equipped with a canonical automorphism given by the holonomies of E. This construction naturally ... [more ▼]

The pull back of a flat bundle E→X along the evaluation map π:LX→X from the free loop space LX to X comes equipped with a canonical automorphism given by the holonomies of E. This construction naturally generalizes to flat Z-graded connections on X. Our main result is that the restriction of this holonomy automorphism to the based loop space ΩX of X provides an A-infinity quasi-equivalence between the dg category of flat Z-graded connections on X and the dg category of representations of C(ΩX), the dg algebra of singular chains on ΩX. [less ▲]

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See detailStudying employers’ risk assessment and the role of institutions: An experimental design
Shi, Penghui Lulu; Imdorf, Christian; Samuel, Robin UL

E-print/Working paper (2015)

Work Package 7 aims at understanding how early job insecurity can affect an individual’s future career from an employer’s perspective. By paying special attention to the educational background and gender ... [more ▼]

Work Package 7 aims at understanding how early job insecurity can affect an individual’s future career from an employer’s perspective. By paying special attention to the educational background and gender of the applicants, we plan to investigate how employers interpret young applicants’ job insecurity, for example in the form of unemployment or job-mismatch experiences, during recruitment. The negative effects of such experiences on an individual’s chances of being recruited successfully – so called scarring effects – may further vary depending on economic and institutional contexts such as country-specific economic or political conditions, educational structures or economic sectors. By surveying employers from different sectors, we will examine if and how these scarring effects vary between four different countries: Bulgaria, Greece, Norway and Switzerland. We will apply an innovative methodology in the form of an employer-sided survey with an integrated multidimensional vignette experiment in order to simulate the impact of multiple factor s on success and failure when young people who experienced job insecurities apply for new jobs. In the present working paper we summarise the major theoretical concepts that have been used to explain the scarring effects that can result from employer behaviour. Moreover, we outline how we plan to collect data in WP 7 in order to analyse scarring through decision-making on behalf of employers during the recruitment process [less ▲]

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See detailPosition space Feynman quadrics and their motives
Ceyhan, Ozgur UL

E-print/Working paper (2015)

Detailed reference viewed: 95 (5 UL)
See detailThe asymmetric effect of expectations on subjective well-being
Barazzetta, Marta UL

E-print/Working paper (2015)

We empirically explore the relationship between expectations and subjective well-being. The- oretical models predict that expectations can in uence experienced utility in two ways: (i) directly as ... [more ▼]

We empirically explore the relationship between expectations and subjective well-being. The- oretical models predict that expectations can in uence experienced utility in two ways: (i) directly as anticipatory emotions in the form of savouring or dread; (ii) indirectly as internal reference levels in the form of deviations between expectations and actual achievements. We use twelve waves of the British Household Panel Survey to empirically investigate the double effect of expectations on experienced utility, as proxied by subjective well-being. We find a strong asymmetry in the way expectations affect subjective well-being. Negative deviations from expectations have a strong negative effect on subjective well-being, while the effect of positive deviations is weaker and sometimes insignificant. Expecting a worsening has a larger impact on subjective well-being than expecting an improvement. [less ▲]

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See detailApproximate Normality of High-Energy Hyperspherical Eigenfunctions
Campese, Simon UL; Marinucci, Domenico; Rossi, Maurizia UL

E-print/Working paper (2015)

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See detailRegards sur la violence
Heinz, Andreas UL; Steffgen, Georges UL; Bodson, Lucile et al

E-print/Working paper (2014)

Dans le cadre de l’enquête sur la sécurité 2013, 3 025 résidants ont été interrogés sur divers délits violents éventuellement subis. Il en ressort que 17% des personnes interviewées ont été harcelées au ... [more ▼]

Dans le cadre de l’enquête sur la sécurité 2013, 3 025 résidants ont été interrogés sur divers délits violents éventuellement subis. Il en ressort que 17% des personnes interviewées ont été harcelées au cours des 5 années précédant l’enquête (harcèlement moral / menaces / brimades), 4% ont été victimes de vols avec violence, 9% ont subi des violences physiques et 4% ont été victimes de violence sexuelle. Globalement, les jeunes résidants étaient plus exposés que les moins jeunes. Les hommes ont été deux fois plus souvent victimes de vols avec violence que les femmes alors que ces dernières ont beaucoup plus fréquemment vécu des agressions sexuelles. Les victimes de violence sexuelle ont également subi plus fréquemment de la violence physique. La classe d’âges des 25 – 34 ans se dit la moins inquiète par des atteintes physiques, même si elle est la plus concernée. Les hommes les appréhendent également moins que les femmes alors qu’ils en sont presque aussi souvent victimes. Parmi les personnes ayant subi de la violence physique entre 2008 et 2012, 38% en ont été victimes à plusieurs reprises. La plupart des agressions ont eu lieu au Grand-Duché (86%) et l’agresseur a le plus souvent agi seul (70%). 33% des victimes connaissaient leurs agresseurs de nom et dans 26% de ces cas il s’agissait de l’ex-conjoint. [less ▲]

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See detailField notes and Facebook: An open fieldwork diary in Guinea Bissau
Juffermans, Kasper UL

E-print/Working paper (2014)

This is the fourth in a series of research briefs in the STAR project. STAR stands for “Sociolinguistic trajectories and repertoires: Luso-Luxo-African identifications, interactions and imaginations”, and ... [more ▼]

This is the fourth in a series of research briefs in the STAR project. STAR stands for “Sociolinguistic trajectories and repertoires: Luso-Luxo-African identifications, interactions and imaginations”, and is a three-year CORE research project funded by FNR, Luxembourg. This multi-sited project seeks to contribute to the field of sociolinguistics of globalization by investigating language and migration between the global South (Cape Verde and Guinea Bissau) and North (Luxembourg) from the perspective of both accomplished and aspiring migrants. This fourth research brief reports on the exploratory fieldwork in Guinea Bissau by Kasper Juffermans from late August to early October 2014. It does so on the basis of Facebook posts sent from the field and reflects on the uses of Facebook as a means to make the fieldwork experience more transparent. [less ▲]

Detailed reference viewed: 185 (6 UL)
See detailLanguage and migration into Luxembourg
Tavares, Bernardino UL; Jurdana, Martin; Juffermans, Kasper UL

E-print/Working paper (2014)

This is the second in a series of research briefs in the STAR project. STAR stands for “Sociolinguistic trajectories and repertoires: Luso-Luxo-African identifications, interactions and imaginations”, and ... [more ▼]

This is the second in a series of research briefs in the STAR project. STAR stands for “Sociolinguistic trajectories and repertoires: Luso-Luxo-African identifications, interactions and imaginations”, and is a three-year CORE research project funded by FNR, Luxembourg. This multi-sited project contributes to the field of sociolinguistics of globalization by investigating language and migration between the global South (Cape Verde and Guinea Bissau) and the global North (Luxembourg) from the perspective of both accomplished and aspiring migrants. In this second research brief we outline sociolinguistic aspects of migration into Luxembourg, with a focus on its Lusophone population. [less ▲]

Detailed reference viewed: 227 (30 UL)
See detailTrajectories and repertoires as conceptual tools for a sociolinguistics of globalization
Juffermans, Kasper UL; Tavares, Bernardino UL

E-print/Working paper (2014)

This is the third in a series of research briefs in the STAR project. STAR stands for “Sociolinguistic trajectories and repertoires: Luso-Luxo-African identifications, interactions and imaginations”, and ... [more ▼]

This is the third in a series of research briefs in the STAR project. STAR stands for “Sociolinguistic trajectories and repertoires: Luso-Luxo-African identifications, interactions and imaginations”, and is a three-year CORE research project funded by FNR, Luxembourg. This multi-sited project contributes to the field of sociolinguistics of globalization by investigating language and migration between the global South (Cape Verde and Guinea Bissau) and North (Luxembourg) from the perspective of both accomplished and aspiring migrants. In this third research brief we outline the key conceptual concepts guiding the project, sociolinguistic trajectories and repertoires. [less ▲]

Detailed reference viewed: 249 (34 UL)
Full Text
See detailIncome taxation and equity: new dominance criteria and an application to Romania
Brunori, Paolo; Palmisano, Flaviana UL; Peragine, Vito

E-print/Working paper (2014)

Detailed reference viewed: 98 (2 UL)
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See detailEssential Inputs and Unbounded Output: an Alternative Characterization of the Neoclassical Production Function
Irmen, Andreas UL; Maußner, Alfred

E-print/Working paper (2014)

The Inada (1963) conditions constitute a defining property of the neoclassical production function with capital and labor as arguments. Are these conditions justifiable on economic grounds? Yes, they are ... [more ▼]

The Inada (1963) conditions constitute a defining property of the neoclassical production function with capital and labor as arguments. Are these conditions justifiable on economic grounds? Yes, they are: we show that a production function with positive, yet diminishing marginal products and constant returns to scale satisfies the Inada conditions if i) both inputs are essential and ii) an unbounded quantity of either input leads to unbounded output. This allows for an alternative characterization of the neoclassical production function that altogether dispenses with the Inada conditions. Moreover, we establish that the marginal product of capital vanishes as capital goes to infinity if labor is an essential input. Given the intuitive appeal of the latter feature, we conclude that the neoclassical growth model is a theory of eventual stagnation. [less ▲]

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See detailRegards sur la présence de drogue
Bodson, Lucile; Reichmann, Liliane; Heinz, Andreas UL et al

E-print/Working paper (2014)

Au cours des 12 derniers mois, 35% des résidents âgés de 16 ans et plus ont vu dans leur quartier des consommateurs de drogue, des dealers et/ou ils ont vu trainer des objets en lien avec la consommation ... [more ▼]

Au cours des 12 derniers mois, 35% des résidents âgés de 16 ans et plus ont vu dans leur quartier des consommateurs de drogue, des dealers et/ou ils ont vu trainer des objets en lien avec la consommation de drogue. Ce sont surtout des jeunes qui ont fait ce genre de constat. La présence de drogue est plus importante dans les pôles urbains que dans les communes rurales. Les consommateurs de drogue et les dealers, lorsqu’ils sont « souvent » présents dans le quartier, ont un effet anxiogène sur la population : certaines personnes sortent moins souvent la nuit et évitent de passer à des endroits ou d’emprunter des rues. Certaines personnes se sentent également plus exposées au risque de vol à la tire, de vol avec violence et de cambriolage. Par contre, lorsque ces rencontres avec des consommateurs ou des revendeurs de drogue sont plus exceptionnelles, celles-ci ne semblent pas jouer, ou très peu, sur le sentiment d’insécurité de la population. Les résultats présentés dans ce document sont tirés de l’enquête sur la sécurité de 2013. [less ▲]

Detailed reference viewed: 123 (14 UL)
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See detailLie superalgebras of Krichever-Novikov type
Schlichenmaier, Martin UL

E-print/Working paper (2014)

Classically, starting from the Witt and Virasoro algebra important examples of Lie superalgebras were constructed. In this write-up of a talk presented at the Bia\l owie\.za meetings we report on results ... [more ▼]

Classically, starting from the Witt and Virasoro algebra important examples of Lie superalgebras were constructed. In this write-up of a talk presented at the Bia\l owie\.za meetings we report on results on Lie superalgebras of Krichever-Novikov type. These algebras are multi-point and higher genus equivalents of the classical algebras. The grading in the classical case is replaced by an almost-grading. It is induced by a splitting of the set of points, were poles are allowed, into two disjoint subsets. With respect to a fixed splitting, or equivalently with respect to a fixed almost-grading, it is shown that there is up to rescaling and equivalence a unique non-trivial central extension of the Lie superalgebra of Krichever--Novikov type. It is given explicitly. [less ▲]

Detailed reference viewed: 103 (2 UL)
See detailMinimal diffeomorphism between hyperbolic surfaces with cone singularities
Toulisse, Jérémy UL

E-print/Working paper (2014)

We prove the existence of a minimal diffeomorphism isotopic to the identity between two hyperbolic cone surfaces (Σ,g1) and (Σ,g2) when the cone angles of g1 and g2 are different and smaller than π. When ... [more ▼]

We prove the existence of a minimal diffeomorphism isotopic to the identity between two hyperbolic cone surfaces (Σ,g1) and (Σ,g2) when the cone angles of g1 and g2 are different and smaller than π. When the cone angles of g1 are strictly smaller than the ones of g2, this minimal diffeomorphism is unique. [less ▲]

Detailed reference viewed: 106 (2 UL)
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Peer Reviewed
See detailEmergence of Sovereign Wealth Funds
Carpantier, Jean-Francois UL; Vermeulen, Wessel UL

E-print/Working paper (2014)

This paper tests the theoretically founded hypothesis that the surge of SWF establishments is determined by three main factors: 1) the existence of natural resources profits, 2) the government structure ... [more ▼]

This paper tests the theoretically founded hypothesis that the surge of SWF establishments is determined by three main factors: 1) the existence of natural resources profits, 2) the government structure and 3) the ability to invest usefully in the domestic economy. We test this hypothesis on a sample of 20 countries that established an SWF in the period 1998-2008 by comparing them to the roughly 100 countries that did not set up a fund in the same period. We find evidence for all three factors. The results suggest that SWFs tend to be established in countries that run an autocratic regime and have difficulties finding suitable opportunities for domestic investments. We do not find the net foreign asset position of a country to be similarly related to the explanatory variables, indicating that the establishment of an SWF is distinct from a national accounting result. We argue that our results indicate that it is relevant to study how an SWF interacts with the domestic economy and government policy. [less ▲]

Detailed reference viewed: 224 (6 UL)
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See detailIs Abatement Effective in the Presence of Corruption? A Theoretical Exploration
Litina, Anastasia UL; Sartzetakis, Eftichis; Lapatina, Athanasios

E-print/Working paper (2014)

The paper introduces an additional channel via which corruption may adversely affect environmental quality. It is argued that, in the presence of corruption, politicians may allocate a large fraction of ... [more ▼]

The paper introduces an additional channel via which corruption may adversely affect environmental quality. It is argued that, in the presence of corruption, politicians may allocate a large fraction of public funds to environmental projects aiming not at improving environmental quality, but rather at increasing their ability to extract rents. This type of behavior has a direct and an indirect effect on environmental quality. First, due to extensive rent-seeking, the effectiveness of environmental projects is disproportional to the amount of public funds allocated to them. Second, citizens who observe the poor outcome of environmental projects, increase tax evasion thus reducing public funds. A vicious circle of extensive tax evasion and rent seeking activities emerges, that has a detrimental effect on environmental quality. Anecdotal evidence from a number of countries that experience high levels of corruption, shows little or no improvements in environmental quality despite the implementation of environmental projects. In line with our theoretical findings, this ineffectiveness of the environmental policy is present even when the technology involved is advanced. [less ▲]

Detailed reference viewed: 48 (5 UL)
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See detailNon-optimal levels of a reducible mod l modular representation
Yoo, Hwajong UL

E-print/Working paper (2014)

Let $ell>3$ be a prime and $N$ is a square-free integer prime to $\ell$. For each prime divisor $p$ of $N$, let $a_p$ is either 1 or -1. We give a sufficient criterion for the existence of a newform $f ... [more ▼]

Let $ell>3$ be a prime and $N$ is a square-free integer prime to $\ell$. For each prime divisor $p$ of $N$, let $a_p$ is either 1 or -1. We give a sufficient criterion for the existence of a newform $f$ of weight 2 for $\Gamma_0(N)$ such that the mod $\ell$ Galois representation attached to $f$ is reducible and $U_p f= a_p f$ for prime divisors $p$ of $N$. The main techniques used are level raising methods based on an exact sequence due to Ribet. [less ▲]

Detailed reference viewed: 93 (0 UL)
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See detailRegards sur les répercussions émotionnelles ressenties par les victimes de délits
Heinz, Andreas UL; Steffgen, Georges UL; Bodson, Lucile et al

E-print/Working paper (2014)

Dans le cadre de l’enquête sur la sécurité, les personnes interrogées devaient indiquer si elles ont été victimes de délits (14 types de délits) lors des cinq dernières années et le cas échéant, signaler ... [more ▼]

Dans le cadre de l’enquête sur la sécurité, les personnes interrogées devaient indiquer si elles ont été victimes de délits (14 types de délits) lors des cinq dernières années et le cas échéant, signaler si le délit en question a eu sur eux des « répercussions émotionnelles plutôt fortes », des « répercussions émotionnelles plutôt légères » ou « aucune répercussion ». Les répercussions émotionnelles plutôt fortes ont le plus souvent été constatées chez les victimes d’actes de violence, et le moins souvent chez les victimes de demandes de pots-de-vin. Certes moins touchées par des délits que les plus jeunes, les personnes âgées affirment néanmoins plus souvent subir des répercussions émotionnelles plutôt fortes suite à ces délits. De même, les femmes sont un peu moins fréquemment victimes de délits mais, le cas échéant, font plus souvent état de répercussions émotionnelles plutôt fortes. Par ailleurs, les victimes d’actes criminels ayant abouti à des répercussions émotionnelles plutôt fortes se distinguent des non-victimes ainsi que des victimes qui n’ont mentionné aucune ou peu de répercussions émotionnelles, sous les aspects suivants : par rapport aux autres groupes susmentionnés, une attaque à main armée est pour eux plus probable, ils craignent davantage une agression et se sentent moins en sécurité dans leur quartier. En outre, ils apprécient moins le travail de la police et des tribunaux et se prononcent plutôt en faveur de peines de prison sans sursis. [less ▲]

Detailed reference viewed: 127 (11 UL)
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See detailThe effects of a multi-pillar pension reform: The case of Peru
Olivera Angulo, Javier UL

E-print/Working paper (2014)

In this paper we study the consequences of a hypothetical multi-pillar pension system in Peru. We use unique administrative records of workers to estimate distributions of future pensions for the actual ... [more ▼]

In this paper we study the consequences of a hypothetical multi-pillar pension system in Peru. We use unique administrative records of workers to estimate distributions of future pensions for the actual and multi-pillar system and assess the effects on pension inequality, pension liability and overall welfare for the insured population. Our results show that the large pension inequality and liability of the actual pension system can be substantially reduced with welfare preserving policies. As we consider different types of social welfare functions, our simulations illustrate, that when one considers welfare, it is important to define the implied value judgments, which are not universally agreed upon. Thus, the goal of this study is not to advice for a particular scenario of reform, but highlight the trade-offs that have to be made explicit in order to take the best possible option, which can be useful for policy-makers who intend to carry out a next generation of pension reforms in Latin America in the near future. [less ▲]

Detailed reference viewed: 85 (3 UL)
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Peer Reviewed
See detailHow Do Migrants Save? Evidence from the British Household Panel Survey on Temporary and Permanent Migrants versus Natives
Joxhe, Majlinda UL; De Arcangelis, Giuseppe

E-print/Working paper (2014)

Detailed reference viewed: 114 (2 UL)
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See detailKrichever-Novikov type algebras. An Introduction
Schlichenmaier, Martin UL

E-print/Working paper (2014)

Krichever--Novikov type algebras are generalizations of the Witt, Virasoro, affine Lie algebras, and their relatives to Riemann surfaces of arbitrary genus. We give the most important results about their ... [more ▼]

Krichever--Novikov type algebras are generalizations of the Witt, Virasoro, affine Lie algebras, and their relatives to Riemann surfaces of arbitrary genus. We give the most important results about their structure, almost-grading and central extensions. This contribution is based on a sequence of introductory lectures delivered by the author at the Southeast Lie Theory Workshop 2012 in Charleston, U.S.A. [less ▲]

Detailed reference viewed: 69 (3 UL)
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See detailThe C*-algebras of connected real two-step nilpotent Lie groups
Günther, Janne-Kathrin UL; Ludwig, Jean

E-print/Working paper (2014)

Using the operator valued Fourier transform, the C*-algebras of connected real two-step nilpotent Lie groups are characterized as algebras of operator fields defined over their spectra. In particular, it ... [more ▼]

Using the operator valued Fourier transform, the C*-algebras of connected real two-step nilpotent Lie groups are characterized as algebras of operator fields defined over their spectra. In particular, it is shown by explicit computations, that the Fourier transform of such C*-algebras fulfills the norm controlled dual limit property. [less ▲]

Detailed reference viewed: 71 (8 UL)
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See detailRegards sur les cambriolages
Bodson, Lucile; Reichmann, Liliane; Heinz, Andreas UL et al

E-print/Working paper (2014)

Au cours des 5 dernières années, 10% des ménages ont fait l’objet d’un cambriolage. À ceux-là s’ajoute un autre 5% qui n’a pas fait l’objet d’un cambriolage mais d’une tentative infructueuse de ... [more ▼]

Au cours des 5 dernières années, 10% des ménages ont fait l’objet d’un cambriolage. À ceux-là s’ajoute un autre 5% qui n’a pas fait l’objet d’un cambriolage mais d’une tentative infructueuse de cambriolage. La peur d’être cambriolé est présente : 34% de la population résidente pense pouvoir faire l’objet d’un cambriolage au cours des 12 prochains mois. Qui sont ces personnes ? Où vivent-elles ? Voici deux questions auxquelles nous donnerons des éléments de réponse grâce à l’enquête sur la sécurité de 2013. Le travail d’intérêt général est, aux yeux de la population, la peine la mieux adaptée pour un cambrioleur récidiviste. La peine de prison ferme est deux fois moins plébiscitée. Mais les avis divergent un peu, entre autres, selon la génération et la nationalité. [less ▲]

Detailed reference viewed: 129 (6 UL)
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See detailStudy of formality for the Heisenberg algebra
Elchinger, Olivier UL

E-print/Working paper (2014)

In this paper, we compute the Chevalley-Eilenberg cohomology of the three-dimensional Heisenberg Lie algebra with values in its universal enveloping algebra. We also compute the Schouten brackets on ... [more ▼]

In this paper, we compute the Chevalley-Eilenberg cohomology of the three-dimensional Heisenberg Lie algebra with values in its universal enveloping algebra. We also compute the Schouten brackets on cochains and cohomology level in order to write the formality equations. It turns out that there is no formality, and that the perturbed L∞ structure on the cohomology has non-trivial terms in infinitely many degrees. [less ▲]

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See detailO cérebro multilingue
Engel de Abreu, Pascale UL

E-print/Working paper (2014)

Detailed reference viewed: 159 (6 UL)
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Peer Reviewed
See detailImproved Modular Multiplication for Optimal Prime Fields
Seo, Hwajeong; Liu, Zhe UL; Nogami, Yasuyuki et al

E-print/Working paper (2014)

Detailed reference viewed: 131 (2 UL)
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See detailSustainability Research and Interactive Knowledge Generation
JUNG ép. PRELLER, Bérénice UL; Affolderbach, Julia UL; Schulz, Christian UL et al

E-print/Working paper (2014)

Based on experiences from the GreenRegio research project that investigates framework conditions for innovations in sustainable/green building, this working paper explores the potential of interactive and ... [more ▼]

Based on experiences from the GreenRegio research project that investigates framework conditions for innovations in sustainable/green building, this working paper explores the potential of interactive and collaborative methods for knowledge generation and co-production. Engagement with local practi-tioners, private industry, academics, political decision-makers and representatives of the non-profit sector early on in the research process allows researchers to gain better understanding of the re-search object and context. It also creates a platform for (mutual) knowledge exchange. Methodologi-cally, the project incorporates interactive workshops and Delphi-based feedback and validation rounds, that – over the lifespan of the project – offer a mutual learning process further inspired by in-sights and experiences across four case studies in Europe, Australia, and Canada. The exchange and learning processes provide important insights on different forms and pathways of sustainability transi-tions in the building sector to all participants involved in the project, researchers and researched alike. [less ▲]

Detailed reference viewed: 242 (7 UL)
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See detailRegards sur la protection des logements privés et la vidéo-surveillance publique
Heinz, Andreas UL; Steffgen, Georges UL; Reichmann, Liliane et al

E-print/Working paper (2014)

70% des résidents pensent que la vidéo-surveillance des lieux publics au Luxembourg augmente leur sécurité personnelle, 23% pensent qu’elle n’a pas d’impact et 3% sont même d’avis que la vidéosurveillance ... [more ▼]

70% des résidents pensent que la vidéo-surveillance des lieux publics au Luxembourg augmente leur sécurité personnelle, 23% pensent qu’elle n’a pas d’impact et 3% sont même d’avis que la vidéosurveillance diminue leur propre sécurité. Les personnes qui craignent d’être agressées physiquement ou qui sont inquiètes d‘être victimes d'une attaque terroriste, celles qui trouvent probable d’être victime d’un cambriolage ou d’un vol avec violence, celles qui ne se sentent pas en sécurité dans leur quartier de résidence et celles qui sont d’avis que la criminalité au Luxembourg a progressé au cours des dernières années, s’attendent plutôt à une augmentation de leur sécurité par les systèmes de surveillance sur certains lieux publics. Par contre les résidents qui effectivement ont été victimes d’un délit ou ceux qui sont confrontés à des problèmes de drogues dans leur quartier résidentiel, ont des doutes quant à l’efficacité de la vidéo-surveillance. Les jeunes sont les plus sceptiques. Par ailleurs, 27% des logements sont équipés d’un système d'alarme et 57% ont des portes de sécurité. On retrouve plus souvent ces deux mesures de sécurité dans les maisons unifamiliales que dans les maisons en rangée ou dans les appartements. En outre, la présence de systèmes d'alarme et de portes de sécurité est fortement liée au revenu du ménage. Quant à la possession d'armes à feu en tant que mesure de sécurité elle joue un rôle mineur : seulement 6% des répondants ont déclaré posséder des armes à feu et parmi eux un-tiers évoquent la prévention et la protection contre les crimes pour justifier la présence d’armes à feu chez eux. [less ▲]

Detailed reference viewed: 167 (8 UL)
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See detailThe free Courant algebroid
Jubin, Benoît Michel UL; Poncin, Norbert UL; Uchino, Kyousuke

E-print/Working paper (2014)

Detailed reference viewed: 115 (28 UL)
See detailMigration from West Africa, with special reference to Cape Verde and Guinea Bissau
Tavares, Bernardino UL; Juffermans, Kasper UL

E-print/Working paper (2014)

This is the first in a series of research briefs in the STAR project. STAR stands for “Sociolinguistic trajectories and repertoires: Luso-Luxo-African identifications, interactions and imaginations”, and ... [more ▼]

This is the first in a series of research briefs in the STAR project. STAR stands for “Sociolinguistic trajectories and repertoires: Luso-Luxo-African identifications, interactions and imaginations”, and is a 3-year CORE research project funded by FNR, Luxembourg. The multi-sited project, meant as contribution to the field of sociolinguistics of globalization, investigates language and migration between the global South (Cape Verde and Guinea Bissau) and North (Luxembourg) from the perspective of both accomplished and desired migrants. In this first research brief we review literature on flows of migration from West Africa. [less ▲]

Detailed reference viewed: 124 (14 UL)
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See detailThe Codimension-Three conjecture for holonomic DQ-modules
Petit, François UL

E-print/Working paper (2014)

We prove an analogue for holonomic DQ-modules of the codimension-three conjecture for microdifferential modules recently proved by Kashiwara and Vilonen. Our result states that any holonomic DQ-module ... [more ▼]

We prove an analogue for holonomic DQ-modules of the codimension-three conjecture for microdifferential modules recently proved by Kashiwara and Vilonen. Our result states that any holonomic DQ-module having a lattice extends uniquely beyond an analytic subset of codimension equal to or larger than three in a Lagrangian subvariety containing the support of the DQ-module. [less ▲]

Detailed reference viewed: 149 (1 UL)
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See detailCorruption, Tax Evasion and Social Values
Litina, Anastasia UL; Palivos, Theodore

E-print/Working paper (2014)

We provide empirical support and a theoretical explanation for the vicious circle of political corruption and tax evasion in which countries often fall into. We address this issue in the context of a ... [more ▼]

We provide empirical support and a theoretical explanation for the vicious circle of political corruption and tax evasion in which countries often fall into. We address this issue in the context of a model with two distinct groups of agents: citizens and politicians. Citizens decide the fraction of their income for which they evade taxes. Politicians decide the fraction of the public budget that they peculate. We show that multiple self-fulfilling equilibria with different levels of corruption can emerge based on the existence of strategic complementarities, indicating that corruption may corrupt. Furthermore, we find that standard deterrence policies cannot eliminate multiplicity. Instead, policies that impose a strong moral cost on tax evaders and corrupt politicians can lead to a unique equilibrium. [less ▲]

Detailed reference viewed: 141 (5 UL)
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See detailReflections upon the Interaction between Domestic and European Personal Data Protection Legislation
Pelin Raducu, Ioana UL

E-print/Working paper (2014)

This paper assesses whether the European legislative reform on the protection of personal data, in conjunction with national law, responds in a satisfactory manner to the challenges posed by technological ... [more ▼]

This paper assesses whether the European legislative reform on the protection of personal data, in conjunction with national law, responds in a satisfactory manner to the challenges posed by technological evolution and widespread use of Internet. In recent years, the question of State regulation of the processing of personal data by private companies has become urgent as allegations of unauthorized access to personal data have been hotly debated in the European press. Thus, the paper shall first analyse, the appropriateness of European and States' legislation to properly regulate the effective protection of personal data, in particular of obligations applicable to companies storing and processing personal data on European soil. Does the proposed European legislation in the context of the EU's international agreements with the US provide sufficient legal safeguards to ensure the effective protection of personal data in the post-Snowden era? Specific subparts are devoted to the European reform of companies' criminal liability in cases of cyber-attack (a) and of specific obligations imposed on providers of cloud computing services (b). In the second part, I comment on the interpretation of the European data-protection legislation, provided by the Court of Justice, regarding the obligations imposed upon 'intermediaries' that process personal data, such as the Internet service providers (a) and Internet search engines (b). The Court of Justice has interpreted the European legislation in a manner that allows courts and national authorities to impose on companies a set of safeguards to protect individuals against the infringement of copyright and privacy rights. [less ▲]

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See detailUrban Spatial Structure, Employment and Social Ties
Picard, Pierre M UL; Zenou, Yves

E-print/Working paper (2014)

We develop a model where workers both choose their residential location (geographical space) and social interactions (social space). In equilibrium, we show under which condition the majority group ... [more ▼]

We develop a model where workers both choose their residential location (geographical space) and social interactions (social space). In equilibrium, we show under which condition the majority group resides close to the job center while the minority group lives far away from it. Even though the two populations are ex ante totally identical, we find that the majority group experiences a lower unemployment rate than the minority group and tends to socially interact more with other workers of its own group. Within each group, we demonstrate that workers residing farther away from the job center tend to search less for a job and are less likely to be employed. This model is thus able to explain why ethnic minorities are segregated in the urban and social space and why this leads to adverse labor-market outcomes in the absence of any discrimination against the minority group. [less ▲]

Detailed reference viewed: 123 (10 UL)
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See detailRegards sur l'évaluation du travail de la police
Heinz, Andreas UL; Steffgen, Georges UL; de Puydt, Cécile et al

E-print/Working paper (2014)

86% de la population estiment que la Police Grand-Ducale réalise du « bon », voire du « très bon » travail. L’évaluation du travail de la police est ainsi légèrement meilleure que pour les tribunaux. En ... [more ▼]

86% de la population estiment que la Police Grand-Ducale réalise du « bon », voire du « très bon » travail. L’évaluation du travail de la police est ainsi légèrement meilleure que pour les tribunaux. En effet, concernant les tribunaux, 75% de la population trouvent qu’ils effectuent du « (très) bon » travail. Une différence existe dans l’appréciation du travail de la police chez les personnes victimes et non-victimes. Parmi les personnes qui n’ont été victimes d’aucun des 14 délits pris en compte par l’enquête au cours des 5 dernières années, 91% sont d’avis que la police fait du « (très) bon » travail. Les victimes, elles, sont 82% à partager cet avis. L’évaluation varie selon la nature et le lieu du délit dont les résidents ont été victimes. 88% des victimes d’un délit ayant eu lieu à l’étranger jugent comme « (très) bon » le travail policier. Ce chiffre descend à 79% pour les victimes de délits qui se sont produits sur le territoire national. Concernant la nature du délit, les victimes de délits sans violence ont une meilleure opinion du travail de la police que les victimes de délits avec violence (82% contre 71%). 89% des victimes qui ont rapporté le délit à la police et qui ont été « très satisfaits » par la manière dont leur affaire personnelle a été traitée pensent que le travail de la Police Grand-Ducale est « (très) bon ». Si par contre les victimes étaient « très insatisfaits » par le traitement de leur dossier, ils sont moins enclins (45%) à évaluer comme « (très) bon » le travail de la police. [less ▲]

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See detailA hybrid T-Trefftz polygonal finite element for linear elasticity
Bhattacharjee, Kalyan; Natarajan, Sundararajan; Bordas, Stéphane UL

E-print/Working paper (2014)

In this paper, we construct hybrid T-Trefftz polygonal finite elements. The displacement field within the polygon is repre- sented by the homogeneous solution to the governing differential equation, also ... [more ▼]

In this paper, we construct hybrid T-Trefftz polygonal finite elements. The displacement field within the polygon is repre- sented by the homogeneous solution to the governing differential equation, also called as the T-complete set. On the boundary of the polygon, a conforming displacement field is independently defined to enforce continuity of the displacements across the element boundary. An optimal number of T-complete functions are chosen based on the number of nodes of the polygon and degrees of freedom per node. The stiffness matrix is computed by the hybrid formulation with auxiliary displacement frame. Results from the numerical studies presented for a few benchmark problems in the context of linear elasticity shows that the proposed method yield highly accurate results. [less ▲]

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See detailSuccessful Ageing and Poverty: The case of Peru
Olivera Angulo, Javier UL; Tournier, Isabelle UL

E-print/Working paper (2014)

This study investigated the determinants of Successful Ageing (SA) in a sample of 4,151 Peruvians aged between 65 and 80 and living in poverty. The data correspond to the ESBAM survey, which is the ... [more ▼]

This study investigated the determinants of Successful Ageing (SA) in a sample of 4,151 Peruvians aged between 65 and 80 and living in poverty. The data correspond to the ESBAM survey, which is the baseline to evaluate the non-contributory public pension program Pension 65. A key contribution of this study is to combine the conceptual appealing of Successful Ageing to measure well-being in old-age with the multidimensional poverty counting approach developed in the economic literature. This setting allows for moving beyond the dichotomy of the SA literature (success or usual ageing) and take advantage of the full distribution of success along the set of dimensions of well-being. Nine indicators of SA have been used to assess the dimensions of physical health, functioning, cognition, emotional health, and life satisfaction. The variables associated with a higher number of satisfied indicators were being a male, younger, literate, working, low food insecurity, good nutritional status, normal blood pressure, absence of disabilities, not smoking, empowerment, good self-esteem, absence of mental disability, and less frequent contact with a social network. From a policy perspective, the results of this study report a remarkably stable effect of three variables affecting SA that can be relatively easy to measure, monitor and affect by public intervention. These variables are food security, nutrition quality, and self-esteem. [less ▲]

Detailed reference viewed: 294 (58 UL)
See detailGender Differences in Cognitive Abilities among the Elderly Poor of Peru
Olivera Angulo, Javier UL; Novella, Rafael

E-print/Working paper (2014)

This paper analyses gender differences on cognitive abilities for the elderly poor in Peru. We use a unique and recent survey for the elderly individuals living in poverty in Peru (ESBAM) that includes ... [more ▼]

This paper analyses gender differences on cognitive abilities for the elderly poor in Peru. We use a unique and recent survey for the elderly individuals living in poverty in Peru (ESBAM) that includes cognitive tests and a comprehensive set of socio-demographics and subjective and objective health measures. We find significant differences in mental intactness in favour of males, and in episodic memory in favour of females. In contrast, there are not gender differences in an overall measure of cognition, but regional differences appear to matter in favour of urban localities. The sizeable associations of education and childhood nutrition quality with cognition confirm the long-term impacts of early life developments on current outcomes. Therefore, policies aimed at improving early childhood development are expected to have a positive impact in later-life. [less ▲]

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See detailTowards Dialogue Games for the Down-Admissible and Up-Complete Procedures
Caminada, Martin; Booth, Richard UL

E-print/Working paper (2014)

Recently, two operators - the down-admissible and up-complete operators - have been proposed, in the context of aggregating argument labellings, for repairing a given initial labelling so that it becomes ... [more ▼]

Recently, two operators - the down-admissible and up-complete operators - have been proposed, in the context of aggregating argument labellings, for repairing a given initial labelling so that it becomes rational, in the sense that it respects the attack relation between the arguments. The purpose of this research note is to give some initial thoughts on defining dialogue games for each of them, as well as for their combination. [less ▲]

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See detailIrreducible decomposition for local representations of quantum Teichmüller space
Toulisse, Jérémy UL

E-print/Working paper (2014)

We give an irreducible decomposition of the so-called local representations \cite{math/0407086} of the quantum Teichmüller space $\mathcal{T}_q(\Sigma)$ where $\Sigma$ is a punctured surface of genus $g>0 ... [more ▼]

We give an irreducible decomposition of the so-called local representations \cite{math/0407086} of the quantum Teichmüller space $\mathcal{T}_q(\Sigma)$ where $\Sigma$ is a punctured surface of genus $g>0$ and $q$ is a $N$-th root of unity with $N$ odd. [less ▲]

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See detailControlling the controllers: the institutional design of Europe’s new Single Supervisory Mechanism
Gren, Jakub UL

E-print/Working paper (2014)

This paper examines the institutional design of the Single Supervisory Mechanism and views the relation between the European Central Bank (ECB) and the National Competent Authorities (NCAs) as a principal ... [more ▼]

This paper examines the institutional design of the Single Supervisory Mechanism and views the relation between the European Central Bank (ECB) and the National Competent Authorities (NCAs) as a principal-agent relation in which the NCAs are carrying out supervision of the less significant banks on behalf of the ECB. From a principal-agent perspective, the institutional design is understood as the art of choosing proper ex ante and ex post mechanisms of control by the ECB over the activities of the NCAs. Therefore, the focus of the paper directed on (1) identifying the proper control mechanisms consisting of the ‘ex-ante’ and the ‘ex-post’ controls, as suggested by the principal-agent model, which the ECB’s may use to ensure that its policy preferences are enforced by the NCAs within the SSM and (2) assess whether they may possibly cover all of the NCAs ‘zone of discretion’ relating to supervision of less significant banks on the ECB’s behalf. The working hypothesis is that the NCAs zone of discretion may not be fully controlled by the ECB. It is argued that existence of such ‘black holes’ constitute challenges for the ECB to ensure its policy preferences are enforced in a full extent by the NCAs. [less ▲]

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See detailThe Welfare State and Anti-Poverty Policy in Rich Countries
Olivera Angulo, Javier UL; Marx, Ive; Nolan, Brian

E-print/Working paper (2014)

This paper is prepared as a chapter for the Handbook of Income Distribution, Volume 2 (edited by A. B. Atkinson and F. Bourguignon, Elsevier-North Holland, forthcoming). Like the other chapters in the ... [more ▼]

This paper is prepared as a chapter for the Handbook of Income Distribution, Volume 2 (edited by A. B. Atkinson and F. Bourguignon, Elsevier-North Holland, forthcoming). Like the other chapters in the volume (and its predecessor), the aim is to provide a comprehensive review of a particular area of research. The aim of this chapter is to highlight some key aspects of recent economic research on the welfare state and anti-poverty policy in rich countries, and explore their implications. We begin with the conceptualisation and measurement of poverty, before sketching out some core features and approaches to the welfare state and anti-poverty policies. We then focus on the central plank of the modern welfare state’s efforts to address poverty, namely social protection, discussing in turn the inactive working-age population, child income support, in-work poverty, and retirement and old-age pensions. After that we discuss social spending on other than cash transfers: the labour market, education, training and activation, and finally intergenerational transmission, childhood and neighbourhoods. We also discuss the welfare state and anti-poverty policy in the context of the economic crisis which began in 2007-8, and the implications for strategies aimed at combining economic growth and employment with making serious inroads into poverty. We conclude with highlighting directions for future research. [less ▲]

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See detailIs a Policy of Free Movement of Workers Sustainable?
Picard, Pierre M UL; Worrall, Tim

E-print/Working paper (2014)

This paper studies the costs and benefits of the adoption of the policy of free movement for workers. For the countries to agree on uncontrolled movement of workers, the short run costs must be outweighed ... [more ▼]

This paper studies the costs and benefits of the adoption of the policy of free movement for workers. For the countries to agree on uncontrolled movement of workers, the short run costs must be outweighed by the long term benefits that result from better labor market flexibility and income smoothing. We show that such policies are less likely to be adopted when workers are impatient and less risk averse workers, when production technologies display decreasing returns and when countries trade a share of their products. [less ▲]

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Peer Reviewed
See detailDynamic Hedging and Extreme Asset Co-movements
Stefanova, Denitsa UL; Elkamhi, Redouane

E-print/Working paper (2014)

Detailed reference viewed: 143 (6 UL)
See detailMigration: a burden or a blessing for the natives
Gabszewicz, Jean; Zanaj, Skerdilajda UL

E-print/Working paper (2014)

Detailed reference viewed: 63 (6 UL)
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See detailIrregular holonomic kernels and Laplace transform
Kashiwara, Masaki; Schapira, Pierre UL

E-print/Working paper (2014)

Detailed reference viewed: 105 (6 UL)
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See detailHedge Fund Return Dynamics: long memory and regime switching
LIMAM, mohamed-Ali; Terraza, Virginie UL

E-print/Working paper (2014)

This paper investigates the dynamics of hedge fund returns and their behavior of persistence in a unified framework through the Markov Switching ARFIMA model of Härdle and Tsay (2009). Major results based ... [more ▼]

This paper investigates the dynamics of hedge fund returns and their behavior of persistence in a unified framework through the Markov Switching ARFIMA model of Härdle and Tsay (2009). Major results based on the CSFB/Tremont hedge fund indexes monthly data during the period 1994-2012, highlight the importance of the long memory parameter magnitude i.e shocks in shaping hedge fund return dynamics and show that the hedge fund dynamics are characterized by two levels of persistence: in the first one, associated to low-volatility regime, hedge fund returns are a stationary long memory process whereas in the second one, associated to high-volatility regime, returns exhibit higher parameter of fractional integration. More precisely, in high volatility regime i.e periods of turmoil, the process tends to be non-stationary but still exhibits a mean-reverting behavior. The findings are interesting and enable us to establish a relationship between hedge fund return states and memory phenomenon. [less ▲]

Detailed reference viewed: 197 (6 UL)
See detailMental Retirement and Non-Contributory Pensions for the Elderly Poor in Peru
Olivera Angulo, Javier UL; Novella, Rafael

E-print/Working paper (2014)

This paper analyses the effects of retirement on cognitive abilities for the elderly poor on the basis of the “mental retirement” effect that accompanies retirement. Given the recent emergence and ... [more ▼]

This paper analyses the effects of retirement on cognitive abilities for the elderly poor on the basis of the “mental retirement” effect that accompanies retirement. Given the recent emergence and expansion of non-contributory pension programs to alleviate poverty in old-age across low and middle income countries, attention should be pay to the potential acceleration of cognitive decline when individuals retire, i.e. when there is a decrease in their engagement on cognitive demanding activities. We use a unique and recent survey of the poor elderly in Peru (ESBAM) which includes a cognitive test and serves as the baseline for a non-contributory pension program. We find a significant negative effect of retirement on cognitive ability after controlling for a number of demographics and objective health measures, and even after applying instrumental variables to deal with the potential endogeneity of retirement. [less ▲]

Detailed reference viewed: 124 (8 UL)
See detailUniversal plane curve and moduli spaces of 1-dimensional coherent sheaves
Iena, Oleksandr UL

E-print/Working paper (2014)

We show that the universal plane curve M of fixed degree d > 2 can be seen as a closed subvariety in a certain Simpson moduli space of 1-dimensional sheaves on a projective plane contained in the stable ... [more ▼]

We show that the universal plane curve M of fixed degree d > 2 can be seen as a closed subvariety in a certain Simpson moduli space of 1-dimensional sheaves on a projective plane contained in the stable locus. The universal singular locus coincides with the subvariety of M consisting of sheaves that are not locally free on their support. It turns out that the blow up of M along M' may be naturally seen as a compactification of M_B = M\M' by vector bundles (on support). [less ▲]

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See detailReal Exchange Rates and Skills
Carpantier, Jean-Francois UL; Bodart, Vincent

E-print/Working paper (2014)

While most of the literature on the determination of real exchange rates is focused on the role of standard macroeconomic variables, there exists however a few papers that are more concerned by the impact ... [more ▼]

While most of the literature on the determination of real exchange rates is focused on the role of standard macroeconomic variables, there exists however a few papers that are more concerned by the impact of factors which are usually considered to play a key role in the process of economic development, like demography or inequality. In the present paper, we extend this small branch of the literature by exploring the relationship between labor skills and real exchange rates over the long-run. According to several theoretical arguments, the real exchange rate of countries experiencing an increase in the ratio between skilled and unskilled workers should appreciate. That is what we actually find empirically using panel regressions covering 22 countries over the period 1950-2010. The impact of skills on real exchange rates is robust to the inclusion of several control variables, like those used in traditional analyses of real exchange rates. The real exchange rate therefore appears as one channel through which increases in skills can alter economic growth. What we call a "skill disease" effect offers a new partial explanation to the weak link between human capital and GDP growth that is often found by the empirical literature. [less ▲]

Detailed reference viewed: 132 (5 UL)
See detailDissecting the Act of God: An Exploration of the effect of Religion on Economic Activity
Carpantier, Jean-Francois UL; Litina, Anastasia UL

E-print/Working paper (2014)

This research establishes that religiosity has a persistent effect on economic outcomes. First we use a sample of migrants in the US to establish that religiosity at the country of origin has a long ... [more ▼]

This research establishes that religiosity has a persistent effect on economic outcomes. First we use a sample of migrants in the US to establish that religiosity at the country of origin has a long lasting effect on the religiosity of migrants. Second, exploiting variations in the inherited component of religiosity of migrants, our analysis uncovers the causal effect of religiosity on economic activity using a panel of countries for the period 1935-2000. The empirical findings suggest that i) church attendance has a positive impact on economic outcomes; ii) religious beliefs in the existence of god, hell, heaven and miracles have no systematic effect on economic outcomes, and iii) stronger faith is associated with prosperity. Moreover we extend our analysis to uncover the channels via which religiosity operates. Notably, the positive effect of religious participation and of stronger faith on economic outcomes operates via the creation of social capital and the development of traits, such as hard work and thrift, that are conducive to growth. [less ▲]

Detailed reference viewed: 64 (7 UL)
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See detailZ_2^n-Supergeometry II: Batchelor-Gawedzki Theorem
Covolo, Tiffany UL; Grabowski, Janusz; Poncin, Norbert UL

E-print/Working paper (2014)

Detailed reference viewed: 121 (16 UL)
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See detailZ_2^n-Supergeometry I: Manifolds and Morphisms
Covolo, Tiffany UL; Grabowski, Janusz; Poncin, Norbert UL

E-print/Working paper (2014)

Detailed reference viewed: 328 (86 UL)
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Peer Reviewed
See detailIs there a Bubble in the Art Market?
Kräussl, Roman UL; Lehnert, Thorsten UL; Martelin, Nicolas

E-print/Working paper (2014)

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Peer Reviewed
See detailEuropean integration and consensus politics in the Low Countries Observations on an under-researched relationship
Beyers, Jan; Vollaard, Hans; Dumont, Patrick UL

E-print/Working paper (2014)

The Netherlands, Belgium and Luxembourg are well-known cases of consensus politics. Traditionally, decision-making in the Low Countries has been characterized by broad involvement, power sharing and ... [more ▼]

The Netherlands, Belgium and Luxembourg are well-known cases of consensus politics. Traditionally, decision-making in the Low Countries has been characterized by broad involvement, power sharing and making compromises. These countries were also founding member states of the European Union (EU) and its predecessors. However, the relationship between European integration and the tradition of domestic consensus politics remains unclear. In order to explore this relationship this paper presents the conceptual framework and a short summary of the recently published book European Integration and Consensus Politics in the Low Countries (edited by Hans Vollaard, Jan Beyers and Patrick Dumont; Routledge). The authors discuss how consensus politics would shape the impact of European integration. They also analyse whether European integration may undermine the fundamental characteristics of consensus politics in the Low Countries. Drawing on consociationalism and Europeanization research, they provide a comprehensive overview of Europeanization in the three Low Countries as well as a better understanding of the varieties of consensus politics across and within these countries. In doing this they refer to a wide range of in-depth studies on a variety of political actors such as governments, parliaments, political parties, courts, ministries and interest groups as well as key policy issues such as the ratification of EU treaties and migration policy. Their most important observation is that European integration has changed the substance of consensus politics in some policy-areas, but barely the domestic political practice itself. [less ▲]

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See detailALIA rejects plans for new radio station
Cole, Mark UL; Metzdorf, Jenny

E-print/Working paper (2014)

Detailed reference viewed: 54 (0 UL)
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See detailRatification of the Council of Europe Convention on Cybercrime
Cole, Mark UL; Metzdorf, Jenny

E-print/Working paper (2014)

Detailed reference viewed: 103 (1 UL)
See detailMalte : île-sentinelle de l’Union européenne
Lemaire, Léa UL

E-print/Working paper (2014)

Detailed reference viewed: 64 (0 UL)
Peer Reviewed
See detailForecasting Distress in European SME Portfolios
Ferreira Filipe, Sara UL; Grammatikos, Theoharry UL; Michala, Dimitra UL

E-print/Working paper (2014)

Detailed reference viewed: 164 (19 UL)