1,721,643 research outputs found
Présentation générale
No full textMaurice Joël, Thisse Jacques-François. Présentation générale. In: Economie et statistique, n°294-295, Mai 1996. Regard socioéconomique sur la structuration de la ville. pp. 3-8
Gerard-Varet (Louis-André), Prevot (Michel), Thisse (Jacques- François) - Analyse mathématique pour l'économie.
No full textFontanel Jacques. Gerard-Varet (Louis-André), Prevot (Michel), Thisse (Jacques- François) - Analyse mathématique pour l'économie.. In: Revue économique, volume 28, n°2, 1977. pp. 299-300
Gerard-Varet (Louis-André), Prevot (Michel), Thisse (Jacques- François) - Analyse mathématique pour l'économie.
No full textFontanel Jacques. Gerard-Varet (Louis-André), Prevot (Michel), Thisse (Jacques- François) - Analyse mathématique pour l'économie.. In: Revue économique, volume 28, n°2, 1977. pp. 299-300
The Home Market Effect and the Agricultural Sector
Get PDFThe "home market effect" (HME) is an essential topic of the new trade theory. Assuming the transport costs only for the manufacturing goods, Krugman (1980) shows that the country with bigger market size is a net exporter. The assumption of free transport of the agricultural good was shown mattering a great deal rather than being innocuous by Davis (1998). Particularly, when manufacturing and agricultural goods have identical transport costs, the HME disappears. However, we find that the homogeneous-agricultural-good assumption in Davis' model derives the discontinuity of inverse demand functions, which causes the disappearance of the HME. After establishing an analytical solvable model and assuming two differentiated agricultural goods in two countries, we find that the HME does exist even if the transport cost of the agricultural goods is positive.
Is Environmentalism the Right Strategy to Decarbonize the World?
Get PDFWe study how the supply of environmentalism, which is dened by psychic benets (costs) associated with the purchase of high-environmental (low-environmental) qualities, a¤ects the way rms choose their products and the ensuing consequences for the global level of pollution. Contrary to general belief, a high supply of environmentalism does not give rise to a better environmental outcome because it endows rms with more market power which they use to maximize prots. By contrast, standard policy instruments such as a minimum quality standard or the use of greener technologies leads to a better ecological footprint
Wage competition with heterogeneous workers and firms
No full textWe study imperfect competition in the labor market when both workers and firms are heterogeneous. When firms cannot observe workers’ skill, firms pay workers equal wages, but workers absorb training costs. When firms can identify worker types, firms pay different net wages to different workers. Voters select the level of general education that is financed by a lump-sum tax. Workers are on average better off when firms can observe workers’ skill for a given level of general human capital, but the median voter prefers a higher level of general human capital when firms cannot observe worker types
Microeconomic theories of imperfect competition
No full textThis paper aims at providing an overview of what has been accomplished in the economics of imperfect competition. Our starting point is that imperfect competition arises when at least one of the four traditional assumptions of perfect competition is violated. In our review, we neglect the monopoly case and offer a brief survey of general equilibrium model with imperfect competition.Cet article vise à offrir un panorama des théories de la concurrence imparfaite qui l'abordent du point de vue de la microéconomie. Cette présentation s'articule autour des quatre thèmes principaux qui caractérisent la concurrence imparfaite : la collusion, la différentiation des produits, les barrières à l'entrée et l'information imparfaite. Une section est aussi consacrée à la théorie de la concurrence imparfaite en équilibre général.Gabszewicz Jean, Thisse Jacques-François. Microeconomic theories of imperfect competition. In: Cahiers d'économie politique, n°37, 2000. Qu'a-t-on appris sur la concurrence imparfaite depuis Cournot? pp. 47-99
Agglomération et marché
No full textAgglomeration and market interaction.
The most salient feature of the spatial economy is the presence of a large variety of economic agglomerations. The purpose of this paper is to review some of the main explanations of this universal phenomenon, as they are proposed in urban economics and modern economic geography. Because of space constraints, we focus on the most recent contributions. Since models of comparative advantage have been extensively studied by international and urban economists, while models of spatial competition have attracted a lot of attention in industrial organization, we restrict ourselves to multiregional models of industrial agglomeration based on monopolistic competition. The paper is organized as follows. In the first part, we show why the competitive framework can hardly be the foundation for the economics of agglomeration. We then briefly review the alternative modeling strategies. In the hope to make our paper accessible to a broad audience, the second part presents in detail the two (specific) models that have been used so far to study the spatial distribution of economic activities. This leads us to put aside non-market institutions and mechanisms that stand at the source of various agglomeration externalities. Several extensions of these models are then discussed. This includes the comparison of market and optimum outcomes, the impact of forward-looking migrations and of urban costs, as well as the role of a heterogeneous labor force and of intermediate commodities. We conclude with some suggestions for further research together with some policy implications.Tout comme le système solaire est formé de fortes concentrations de matière (les planètes) séparés par du vide, l'espace économique est principalement constitué par des peuplements regroupant de nombreuses activités. Qui plus est, s'il existe de grandes et de petites planètes, on trouve également de grandes et de petites agglomérations. La caractéristique spatiale la plus saillante d'une économie réside, par conséquent, dans l'existence d'une grande variété d'agglomérations économiques. Dans cet article, nous allons passer en revue quelques-unes des explications de ce phénomène quasi universel, telles qu'on les trouve développées en économie géographique et urbaine. Pour commencer, nous montrons que le modèle concurrentiel ne permet pas d'étudier les phénomènes d'agglomération de manière satisfaisante. Dans le souci de rendre l'article accessible à un large public, nous présentons en détail les deux modèles qui ont été jusqu'à présent utilisés pour étudier la répartition spatiale des activités économiques. Plusieurs prolongements de ces modèles sont ensuite discutés. En conclusion, nous proposons de nouvelles pistes de recherche et tirons quelques enseignements pour la politique d'aménagement du territoire.Fujita Masahisa, Thisse Jacques-François. Agglomération et marché. In: Cahiers d'Economie et sociologie rurales, N°58-59, 1er et 2e trimestres 2001. Économie spatiale et géographique. Applications à l'agriculture, l'agro-alimentaire et l'espace rural. pp. 11-57
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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