Newtoning financial development with heterogeneous firms

Abstract: This article theoretically and empirically tests the link between financial constraints and the extensive (proportion of exporters) and intensive (volume of exports) margins of international trade. The article's main contribution is its macroeconomic analysis of this relationship, which is further reaching than the sector-based focus found in the current literature. It also presents new information on firm behavior under financial constraints. The paper develops a trade model with heterogeneous firms and shows that countries with a high level of financial development have a lower productivity cut-off above which firms export and a higher proportion of exporting firms. Nevertheless, financial development is not correlated with firms' export volumes once they become exporters. An empirical analysis is developed on the basis of an international trade database on 135 countries between 1994 and 2007. The empirical analysis estimates a two-step gravity equation using panel data and confirms the first theoretical proposition that finance has a positive impact on the extensive margin. However, the intensive margin results are striking. They find a negative relationship between financial development and trade flows, confirmed by all the sensitivity tests. Despite the positive effect of financial development found by the literature in some economic sectors, the macroeconomic impact on overall exports was negative during the analyzed period

Patterns and universals of mate poaching across 53 nations : the effects of sex, culture, and personality on romantically attracting another person’s partner

As part of the International Sexuality Description Project, 16,954 participants from 53 nations were administered an anonymous survey about experiences with romantic attraction. Mate poaching--romantically attracting someone who is already in a relationship--was most common in Southern Europe, South America, Western Europe, and Eastern Europe and was relatively infrequent in Africa, South/Southeast Asia, and East Asia. Evolutionary and social-role hypotheses received empirical support. Men were more likely than women to report having made and succumbed to short-term poaching across all regions, but differences between men and women were often smaller in more gender-egalitarian regions. People who try to steal another's mate possess similar personality traits across all regions, as do those who frequently receive and succumb to the poaching attempts by others. The authors conclude that human mate-poaching experiences are universally linked to sex, culture, and the robust influence of personal dispositions.peer-reviewe

L'ombre de l'intelligence

Lavallée Ivan. L'ombre de l'intelligence. In: Quaderni, n°25, Printemps 1995. Intelligence artificielle et entreprise : l'entreprise intelligente ? pp. 43-58

Complexité et algorithmique avancée (une introduction)

International audienc

Prétopologie et applications - Studia Informatica Universalis

International audienc

A New Way In Linear Programming

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Generalizing of a High Performance Parallel Strassen Implementation on Distributed Memory MIMD Architectures

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RELIABLE SELF-STABILIZING COMMUNICATION FOR QUASI RENDEZVOUS

The paper presents three self-stabilizing protocols for basic fair and reliable link communication primitives. We assume a link-register communication model under read/write atomicity, where every process can read from but cannot write into its neighbours’ registers. The first primitive guarantees that any process writes a new value in its register(s) only after all its neighbours have read the previous value, whatever the initial scheduling of processes’ actions. The second primitive implements a “weak rendezvous” communication mechanism by using an alternating bit protocol: whenever a process consecutively writes n values (possibly the same ones) in a register, each neighbour is guaranteed to read each value from the register at least once. On the basis of the previous protocol, the third primitive implements a “quasi rendezvous”: in words, this primitive ensures furthermore that there exists exactly one reading between two writing operations All protocols are self-stabilizing and run in asynchronous arbitrary networks. The goal of the paper is in handling each primitive by a separate procedure, which can be used as a “black box” in more involved self-stabilizing protocols

A New Direction to Parallelize Winograd’s Algorithm on Distributed Memory Computers in "Modeling, Simulation and Optimization of Complex Processes"

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