Browsing
     by title


0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

or enter first few letters:   
OK
Full Text
Peer Reviewed
See detailA population shift view of cellular reprogramming
del Sol Mesa, Antonio UL

in Stem Cells (2014)

Detailed reference viewed: 164 (8 UL)
Full Text
Peer Reviewed
See detailPopulation, Pensions, and Endogenous Economic Growth
Irmen, Andreas UL; Heer, Burkhard

in Journal of Economic Dynamics & Control (2014), 46

We study the effect of a declining labor force on the incentives to engage in labor-saving technical change and ask how this effect is influenced by institutional characteristics of the pension scheme ... [more ▼]

We study the effect of a declining labor force on the incentives to engage in labor-saving technical change and ask how this effect is influenced by institutional characteristics of the pension scheme. When labor is scarcer it becomes more expensive and innovation investments that increase labor productivity are more profitable. We incorporate this channel in a new dynamic general equilibrium model with endogenous economic growth and heterogeneous overlapping generations. We calibrate the model for the US economy and obtain the following results. First, the effect of a decline in population growth on labor productivity growth is positive and quantitatively significant. In our benchmark, it is predicted to increase from an average annual growth rate of 1.74% over 1990–2000 to 2.41% in 2100. Second, institutional characteristics of the pension system matter both for the growth performance and for individual welfare. Third, the assessment of pension reform proposals may depend on whether economic growth is endogenous or exogenous. [less ▲]

Detailed reference viewed: 175 (4 UL)
See detailPopulation, Pensions, and Endogenous Economic Growth
Heer, Burkhard; Irmen, Andreas UL

E-print/Working paper (2013)

We study the effect of a declining labor force on the incentives to engage in labor-saving technical change and ask how this effect is influenced by institutional characteristics of the pension scheme ... [more ▼]

We study the effect of a declining labor force on the incentives to engage in labor-saving technical change and ask how this effect is influenced by institutional characteristics of the pension scheme. When labor is scarcer it becomes more expensive and innovation investments that increase labor productivity are more profitable. We incorporate this channel in a new dynamic general equilibrium model with endogenous economic growth and heterogeneous overlapping generations. We calibrate the model for the US economy and obtain the following results. First, the effect of a decline in population growth on labor productivity growth is positive and quantitatively significant. In our benchmark, it is predicted to increase from an average annual growth rate of 1.74% over 1990-2000 to 2.41% in 2100. Second, institutional characteristics of the pension system matter both for the growth performance and for individual welfare. Third, the assessment of pension reform proposals may depend on whether economic growth is endogenous or exogenous. [less ▲]

Detailed reference viewed: 122 (4 UL)
Full Text
Peer Reviewed
See detailPopulation-specific frequencies for LRRK2 susceptibility variants in the Genetic Epidemiology of Parkinson's Disease (GEO-PD) Consortium.
Heckman, Michael G.; Soto-Ortolaza, Alexandra I.; Aasly, Jan O. et al

in Movement disorders : official journal of the Movement Disorder Society (2013), 28(12), 1740-4

BACKGROUND: Variants within the leucine-rich repeat kinase 2 gene are recognized as the most frequent genetic cause of Parkinson's disease. Leucine-rich repeat kinase 2 variation related to disease ... [more ▼]

BACKGROUND: Variants within the leucine-rich repeat kinase 2 gene are recognized as the most frequent genetic cause of Parkinson's disease. Leucine-rich repeat kinase 2 variation related to disease susceptibility displays many features that reflect the nature of complex, late-onset sporadic disorders like Parkinson's disease. METHODS: The Genetic Epidemiology of Parkinson's Disease Consortium recently performed the largest genetic association study for variants in the leucine-rich repeat kinase 2 gene across 23 different sites in 15 countries. RESULTS: Herein, we detail the allele frequencies for the novel risk factors (p.A419V and p.M1646T) and the protective haplotype (p.N551K-R1398H-K1423K) nominated in the original publication. Simple population allele frequencies not only can provide insight into the clinical relevance of specific variants but also can help genetically define patient groups. CONCLUSIONS: Establishing individual patient-based genomic susceptibility profiles that incorporate both risk factors and protective factors will determine future diagnostic and treatment strategies. [less ▲]

Detailed reference viewed: 93 (0 UL)
See detailLes populations des bassins d'industries lourdes
Leboutte, René UL

Book published by Espace, Populations, Sociétés (2001)

Detailed reference viewed: 15 (0 UL)
See detailPopulations, Connections, Droits fondamentaux - Mélanges pour Jean-Paul Lehners
Kolnberger, Thomas UL; Franz, Norbert; Peporte, Pit UL

Book published by Mandelbaum Verlag (2015)

Detailed reference viewed: 62 (5 UL)
See detailPopulism [glossary]
Chiocchetti, Paolo UL

E-print/Working paper (2017)

A chameleonic concept, populism can be defined as an ideology, a communication style, a political strategy, or a misguided category. Its key elements are a positive appreciation of people, a negative view ... [more ▼]

A chameleonic concept, populism can be defined as an ideology, a communication style, a political strategy, or a misguided category. Its key elements are a positive appreciation of people, a negative view of the elite, and the exaltation of untrammeled popular sovereignty against representative democracy and liberal constitutionalism. The fortune of the term, despite its theoretical and practical drawbacks, is the reflection of intrinsic antinomies of modern democracy and of a growing popular dissatisfaction toward the performance of representative governments and institutions. [less ▲]

Detailed reference viewed: 34 (0 UL)
See detailPor que ensinar história digital nas universidades?
Lucchesi, Anita UL

Speeches/Talks (2018)

Detailed reference viewed: 41 (5 UL)
Full Text
See detailPor um debate sobre História e Historiografia Digital
Lucchesi, Anita UL

in Boletim Historiar (2014), (2),

Detailed reference viewed: 41 (1 UL)
Full Text
Peer Reviewed
See detailPornografisierung durch Sexualpädagogik? Über problematische Vorwürfe und komplizierte Auseinandersetzungen
Rothmüller, Barbara UL; Scheibelhofer, Paul

in Medienimpulse. Beiträge zur Medienpädagogik (2016), (2),

The paper focuses on the contradictory relationship between pornography and sexuality education. In recent decades, contemporary sex education is more and more expected to save children and youth from the ... [more ▼]

The paper focuses on the contradictory relationship between pornography and sexuality education. In recent decades, contemporary sex education is more and more expected to save children and youth from the negative consequences of pornography. Yet, sex education was and still is often accused of being pornographic itself and harmful to pupils. Analyzing this contradictory constellation, the article argues for the need of a differentiated pedagogical approach to pornography. [less ▲]

Detailed reference viewed: 451 (6 UL)
See detailPoroelastic material characterisation by means of Artificial Neural Network
Dehghani, Hamidreza UL; Zilian, Andreas UL

Presentation (2019, November 13)

Poroelastic problems require multiscale and multiphysics techniques that are expensive and time-consuming, which result in either several simplifications or costly experimental tests. The latter motivates ... [more ▼]

Poroelastic problems require multiscale and multiphysics techniques that are expensive and time-consuming, which result in either several simplifications or costly experimental tests. The latter motivates us to develop a more efficient approach to address more complex problems with an acceptable computational cost. In this manuscript, first, the necessary equations derived from Asymptotic homogenisation for poroelastic media are mentioned. Then, the variational formulation of the cell problems is carried out and solved by the open-source FE package FEniCS. This is followed by presenting the advantages and downsides of macroscale properties identification via asymptotic homogenisation and the application of Artificial Neural Network (ANN) to solve the issues stated as its downsides by means of bypassing the process of solving the cell problems. Finally, we study a practical example, namely, spatial dependent porosity (in macroscale) to demonstrate the feasibility of using the provided framework to include more details. Further applications, including growth and remodelling, are subjects of future articles. [less ▲]

Detailed reference viewed: 63 (6 UL)
Full Text
Peer Reviewed
See detailPoroelastic model parameter identification using artificial neural networks: on the effects of heterogeneous porosity and solid matrix Poisson ratio
Dehghani, Hamidreza UL; Zilian, Andreas UL

in Computational Mechanics (2020), 66

Predictive analysis of poroelastic materials typically require expensive and time-consuming multiscale and multiphysics approaches, which demand either several simplifications or costly experimental tests ... [more ▼]

Predictive analysis of poroelastic materials typically require expensive and time-consuming multiscale and multiphysics approaches, which demand either several simplifications or costly experimental tests for model parameter identification. This problem motivates us to develop a more efficient approach to address complex problems with an acceptable computational cost. In particular, we employ artificial neural network (ANN) for reliable and fast computation of poroelastic model parameters. Based on the strong-form governing equations for the poroelastic problem derived from asymptotic homogenisation, the weighted residuals formulation of the cell problem is obtained. Approximate solution of the resulting linear variational boundary value problem is achieved by means of the finite element method. The advantages and downsides of macroscale properties identification via asymptotic homogenisation and the application of ANN to overcome parameter characterisation challenges caused by the costly solution of cell problems are presented. Numerical examples, in this study, include spatially dependent porosity and solid matrix Poisson ratio for a generic model problem, application in tumour modelling, and utilisation in soil mechanics context which demonstrate the feasibility of the presented framework. [less ▲]

Detailed reference viewed: 74 (1 UL)
Full Text
Peer Reviewed
See detailPorosity-induced spin disorder in nanocrystalline inert-gas condensed iron
Michels, Andreas UL; Elmas, M.; Döbrich, Frank UL et al

in Europhysics Letters [=EPL] (2009), 85

We report magnetization and magnetic neutron scattering measurements on nanocrystalline Fe which was prepared by means of the inert-gas condensation technique. Depending on the compaction pressure applied ... [more ▼]

We report magnetization and magnetic neutron scattering measurements on nanocrystalline Fe which was prepared by means of the inert-gas condensation technique. Depending on the compaction pressure applied during the synthesis procedure (0.5–1.8 GPa), the resulting Fe samples contain porosity with volume fractions between about 20–35%. We provide evidence that the spin disorder which is associated with porosity has a strong influence on magnetic properties, and it gives rise to a characteristic clover-leaf–shaped angular anisotropy in the elastic-magnetic-scattering cross-section. [less ▲]

Detailed reference viewed: 91 (2 UL)
Peer Reviewed
See detailThe porpuse of purspose
Valsiner, Jaan UL

in Marsico, Giuseppina (Ed.) Jerome S. Bruner beyond 100: Cultivating possibilities (2015)

Detailed reference viewed: 52 (0 UL)
Full Text
See detailPortability of Student Benefits in the European Union - The Luxembourg System
Silga, Janine UL

E-print/Working paper (2018)

Since its creation, Luxembourg’s system of financial aid for higher (university) studies has set as its primary objective the increase of the proportion of its resident population holding a higher ... [more ▼]

Since its creation, Luxembourg’s system of financial aid for higher (university) studies has set as its primary objective the increase of the proportion of its resident population holding a higher education degree. However, the fact that Luxembourg did not have its own university system until 2003 made this country even more dependent on other European countries to fulfil this policy objective. This explains why the portability of national financial assistance for higher education was crucial to achieve it. In the European Union (EU) context, the portability – or exportability – of student grants or loans may be defined as the faculty for students to ‘export’ such benefits to a Member State that is different from the one which allocates them. Portability is also the reason why the Luxembourg system falls into the scope of EU law, since it may interfere with equal treatment between workers all the more so, as frontier workers account for more than 45% of the country’s labour force. These peculiarities provide the background for the three decisions of the Court of Justice of the EU (CJEU) on the portability of financial aid for higher studies for children of frontier workers that lie at the heart of this paper. It will start by briefly highlighting the evolution of Luxembourg’s system of financial aid for higher education and present its main features. Then, it will show that despite the recent clarifications given by the CJEU in the last two cases of 2016, several issues remain unanswered, both from an EU and national law perspective. [less ▲]

Detailed reference viewed: 77 (6 UL)
See detail"Portante postmoderne"
Raus, Tonia UL

in De Toffoli, Ian; Millim, Anne-Marie (Eds.) Modernismes au Luxembourg. Traditions - Variations - Ruptures (2019)

Detailed reference viewed: 8 (0 UL)
See detailPORTANTE, Jean. 1950 (Differdange, Luxembourg)
Wilhelm, Frank UL

in Mathis-Moser, Ursula; Mertz-Baumgartner, Birgit (Eds.) Passages et ancrages en France. Dictionnaire des écrivains migrants de langue française (1981-2011) (2012)

Detailed reference viewed: 29 (0 UL)
See detailPorte-fort d'exécution
Riassetto, Isabelle UL

in LAMY Droit des sûretés (2019)

Detailed reference viewed: 16 (0 UL)
Full Text
Peer Reviewed
See detailPorte-fort d'exécution : un engagement de faire dépourvu de formalisme
Riassetto, Isabelle UL

in Revue Lamy Droit Civil (2013)

Detailed reference viewed: 103 (4 UL)