Search results for "J2"
showing 10 items of 137 documents
Les étudiants anticipent-ils correctement la valeur de leur diplôme sur le marché du travail ?
2013
Documents de travail de l'IREDU, n°2013-1; Ce travail analyse la manière dont les étudiants de première année d'université anticipent leurs salaires futurs, puis compare ces salaires à ceux qu'ils peuvent réellement observer sur le marché du travail. Nos résultats montrent globalement une surestimation des salaires anticipés d'environ 9 pour cent en début de carrière, ce qui est cohérent avec des travaux réalisés dans d'autres pays. En revanche, les salaires anticipés après dix ans de carrières sont supérieurs de 28 pour cent aux salaires observés des diplômés à ancienneté comparable. Les résultats soulignent également l'importance de l'environnement familial lors du choix des études supéri…
The effect of weight on labor market outcomes: An application of genetic instrumental variables
2019
This paper contributes to the literature on the labor market consequences of obesity by using a novel instrument: genetic risk score, which reflects the predisposition to higher body mass index (BMI) across many genetic loci. We estimate instrumental variable models of the effect of BMI on labor market outcomes using Finnish data that have many strengths, for example, BMI that is measured rather than self‐reported, and data on earnings and social income transfers that are from administrative tax records and are thus free of the problems associated with nonresponse, reporting error or top coding. The empirical results are sensitive to whether we use a narrower or broader genetic risk score, …
A cross-country study of skills and unemployment flows
2021
AbstractUsing an international survey that directly assesses the cognitive skills of the adult population, I study the relation between skills and unemployment flows across 37 countries. Depending on the specifically assessed domain, I document that skills have an unconditional correlation with the log-risk-ratio of exiting to entering unemployment of 0.65–0.68 across the advanced and skill-abundant countries in the sample. The relation is remarkably robust and it is unlikely to be due to reverse causality. I do not find evidence that this positive relation extends to the seven relatively less advanced and less skill-abundant countries in the sample: Peru, Ecuador, Indonesia, Mexico, Chile,…
On resampling schemes for particle filters with weakly informative observations
2022
We consider particle filters with weakly informative observations (or `potentials') relative to the latent state dynamics. The particular focus of this work is on particle filters to approximate time-discretisations of continuous-time Feynman--Kac path integral models -- a scenario that naturally arises when addressing filtering and smoothing problems in continuous time -- but our findings are indicative about weakly informative settings beyond this context too. We study the performance of different resampling schemes, such as systematic resampling, SSP (Srinivasan sampling process) and stratified resampling, as the time-discretisation becomes finer and also identify their continuous-time l…
Symmetries and equations of smooth quartic surfaces with many lines
2017
We provide explicit equations of some smooth complex quartic surfaces with many lines, including all 10 quartics with more than 52 lines. We study the relation between linear automorphisms and some configurations of lines such as twin lines and special lines. We answer a question by Oguiso on a determinantal presentation of the Fermat quartic surface.
Lines on K3 quartic surfaces in characteristic 2
2016
We prove that a K3 quartic surface defined over a field of characteristic 2 can contain at most 68 lines. If it contains 68 lines, then it is projectively equivalent to a member of a 1-dimensional family found by Rams and Sch\"utt.
Gradient estimates for the perfect conductivity problem in anisotropic media
2018
Abstract We study the perfect conductivity problem when two perfectly conducting inclusions are closely located to each other in an anisotropic background medium. We establish optimal upper and lower gradient bounds for the solution in any dimension which characterize the singular behavior of the electric field as the distance between the inclusions goes to zero.
trans-Bis[bis(diphenylphosphino)methane-κ2P,P′]dichlororuthenium(II) dichloromethane disolvate acetone hemisolvate hemihydrate
2006
Submitted by António Freitas (amsf@uma.pt) on 2019-06-14T10:31:02Z No. of bitstreams: 1 trans-Bis[bis(diphenylphosphino)methane-j2P,P000]dichlororuthenium(II) dichloromethane disolvate acetone hemisolvate hemihydrate.pdf: 221219 bytes, checksum: 8e4738b39248ecff6cd2421345c563e7 (MD5) Made available in DSpace on 2019-06-14T10:31:02Z (GMT). No. of bitstreams: 1 trans-Bis[bis(diphenylphosphino)methane-j2P,P000]dichlororuthenium(II) dichloromethane disolvate acetone hemisolvate hemihydrate.pdf: 221219 bytes, checksum: 8e4738b39248ecff6cd2421345c563e7 (MD5) Previous issue date: 2006 info:eu-repo/semantics/publishedVersion
Arithmetic and geometry of a K3 surface emerging from virtual corrections to Drell--Yan scattering
2019
We study a K3 surface, which appears in the two-loop mixed electroweak-quantum chromodynamic virtual corrections to Drell--Yan scattering. A detailed analysis of the geometric Picard lattice is presented, computing its rank and discriminant in two independent ways: first using explicit divisors on the surface and then using an explicit elliptic fibration. We also study in detail the elliptic fibrations of the surface and use them to provide an explicit Shioda--Inose structure. Moreover, we point out the physical relevance of our results.
Promoting self-employment: Does it create more employment and business activity?
2021
International audience; We assess the economic impact of reforms promoting self-employment in the three countries that have implemented such reforms since the early 2000s: the Netherlands, the United Kingdom and France. To that end, we use an unbalanced cross country-industry dataset of 4,226 observations, including 12 OECD countries and 20 market industries, over the 1995-2016 period. We first observe, using country-level data, that the share of self-employed workers in total employment is quite stable or declines over the period in all countries in our dataset, except in the three countries where large reforms promoting self-employment have been implemented, and only after these reforms. …