Showing 141 - 150 of 15,888
In this paper, we attempt to examine the speculative efficiency hypothesis on CO2 emission allowance prices negotiated on Bluenext, by testing the rela- tionship between futures and spot prices from the Fama (1970) framework. This approach is based on the joint hypothesis of no risk premium and...
Persistent link: https://www.econbiz.de/10008855845
Macro vulnerability of the poor countries, an increasing concern of the international community, is analyzed as the risk that their development be hampered by the shocks they face, natural or external. Structural vulnerability mainly results from the size of the shocks and the exposure to the...
Persistent link: https://www.econbiz.de/10008855846
In this paper, by employing Chinese provincial data, we develop a simultaneous equation model to estimate the relationship between agricultural trade and rural poverty in post-reform China. We find that trade liberalization can affect China's poverty both directly through providing the poor with...
Persistent link: https://www.econbiz.de/10008855847
This paper introduces a partner heterogeneity assumption in the one-way flow model of Bala and Goyal (2000, [1]). Our goal consists in the characterization of strict Nash networks with regard to the set of resources obtained by players. We use the notion of condensation network which allows us...
Persistent link: https://www.econbiz.de/10008866166
Marie-José Avenier (CERAG, Grenoble) réagit sur les questions épistémologiques soulevées dans le précédent numéro en défendant le paradigme constructiviste. Pour elle, il s'agit bien d'un paradigme même si elle distingue différents types de constructivisme, fondé sur des hypothèses...
Persistent link: https://www.econbiz.de/10008866167
Afin de limiter les impacts du changement climatique sur la planète, les experts du Groupe Intergouvernemental d'experts sur l'Evolution du Climat (GIEC) préconisent une division par deux des émissions mondiales de gaz à effet de serre à l'horizon 2050. Cet objectif impose une division par...
Persistent link: https://www.econbiz.de/10008866168
Dans cet article, nous argumentons, à la suite d'autres auteurs et à partir d'une recherche qualitative récente, qu'il existe une spécificité des modes de transmission des savoirs dans les PME régulièrement sous-estimé par les enquêtes officielles. Nous mobilisons dans cet objectif la...
Persistent link: https://www.econbiz.de/10008866169
Les recherches qualitatives se veulent souvent exploratoires : elles entendent inventer des concepts, proposer de nouvelles notions et théories. Dans le même temps, pour interpréter les données, elles manient des concepts existants. Mais bien souvent, les notions utilisées ou proposées...
Persistent link: https://www.econbiz.de/10008866170
We provide existence results in a game with local spillovers where the payoff function satisfies both convexity and the strategic substitutes property. We show that there always exists a stable pairwise network in this game, and provide a condition which ensures the existence of pairwise...
Persistent link: https://www.econbiz.de/10008866171
In this paper we examine the role played by heterogeneity in the popular “connections model” of Jackson andWolinsky (1996). We prove that under heterogeneity in values or decay involving only two degrees of freedom, all networks can supported as Nash. Moreover, we show that Nash networks may...
Persistent link: https://www.econbiz.de/10008866172