Education, Market Rigidities and Growth.

This paper investigates the effects of the education level, product market rigidities and employment protection legislation on growth. It exploits macro-panel data for OECD countries. For countries close to the technological frontier, education and rigidities are significantly related to TFP growth. The contribution of the interaction between product market regulation and labour market rigidity seems particularly substantial.Productivity ; Growth ; Regulations ; Market Rigidities ; Education

Financial Constraints and Foreign Market Entries or Exits: Firm-Level Evidence from France

This paper studies the effect of credit constraints on the expansion and survival of firms in foreign markets. It develops a model in which, lower access to external finance, or reduced internal liquidity, hampers the firm ability to finance the recurrent costs to serve foreign markets and decreases firm survival in foreign markets. Additionally, financial constraints act as a barrier to firm export expansion by decreasing the firm ability to finance the entry costs into new export markets; thus, they push firm to avoid losing destinations. We use a unique longitudinal dataset on French firms that contains information on export destinations of individual firms and allows us to construct various firm-level measures of financial constraints to test these predictions. We obtain two main results. First, credit constraints have a negative effect on the number of newly served destinations. Second, higher probability of exit from the export market is also associated with credit constraints; that is consistent with constraints limiting the financing of recurrent export costs.Firm heterogeneity, financial constraints, trade.

Sur les champs magnétiques pulsés crowbar. I. Caractéristiques géométriques et électriques des bobines en cuivre

Un champ pulsé est défini par le champ crête B0, l'énergie magnétique W et le rayon intérieur a1 des bobines. Nous proposons un ensemble de formules qui, pour chaque couple w = W/2,5 a31 B20 et Γ = diamètre extérieur/longueur des bobines, donnent : l'« épaisseur » de chaque bobine, leur constante de temps, l'homogénéïté du champ magnétique, la température du bobinage à la fin d'une impulsion crowbar. Nous montrons, que pour chaque champ pulsé, c'est dans la bobine Γ = 1,36, que les contraintes magnétiques de coeur sont minimales. Nous analysons le rendement magnétique en prenant en compte l'échauffement adiabatique du bobinage. A chaque étape du texte, apparaît l'intérêt des bobines très épaisses

Design of a dilution refrigerator and sample holder operating in pulsed field

International audienceWe have constructed a compact dilution refrigerator which can lower the temperature from 300 K to 50 mK in less than 3 h, and operate in a pulsed magnetic field. To avoid eddy currents due to contacts with the sample we design an original sample holder

Existence of solutions in continuous-time optimal growth models

Existence of solutions, Optimization, Continuous time, Optimal growth, C61, D91, E13,

Non-convex aggregate technology and optimal economic growth

Nonconvex aggregate technology, Poverty trap, Multiple equilibria, Dynamic convergence, C61, D90, O41, Q20,