Search results for "economies"
showing 10 items of 1069 documents
The individual determinants unemployment duration
1997
Si, aujourd'hui, les études sur les comportements des demandeurs d'emploi sur le marché du travail sont de plus en plus importantes, la modélisation de ces comportements comporte encore un bon nombre d'interrogations. Parmi celles-ci figure le problème du biais d'échantillonnage présent dans laplupart des données françaises sur les durées de chômage. Dans un précédent travail, nous avons montré l'importance et les conséquences de l'oubli du biais d'échantillonnage sur les probabilités conditionnelles de sortie du chômage. Dans le travail présenté ici et réalisé à partir de l'enquête « suivides chômeurs », notre intérêt porte sur les conséquences de l'oubli de ce biais sur les déterminants i…
La non stationnarité dans les séries saisonnières. Application au tourisme tunisien
1998
The purpose of the paper is to specify the nature of the seasonal behaviors of tourist stay demand in Tunisia by using recent tools of monthly time series analysis. The available series (tourist expenditures, prices, guest nights, reception capacities,...) are analyzed with the classical theory of demand and the theory of supply induced demand. Empirical results show that these series are generated by non stationary processes which seasonality is stochastic and deterministic. The extent of the maximum likelihood method proposed by Lee (1992) for monthly data emphasizes unit roots and cointegration relationships at some seasonal frequencies. Error correction models are derived for endogenous…
Fuzzy economic spaces
1980
Traditional spatial economic analysis is limited to the description of precise spaces. To say that an economic space is precise means: (1) that this space has, or else, has not given constituent characteristics and (2) that the agents located there prefer, or else, do not prefer one possible action to another. Proposition (1) implies that an economic space is perfectly delimited and that it can be clearly partitioned into homogeneous subspaces. Proposition (2) implies that economic agents undertake exact economic calculations and optimize, under rigid constraints of resource limitation, objective functions whose arguments are clearly defined. Thus, traditional spatial economic analysis is b…
Spatial spillovers in France: a study on individual count data at the city level
2007
Our study aims to measure the effects of spatial R&D spillovers on firms' patent production at the city level. We use an original method to estimate the spatial dimension of spillovers using count data. The method, based on a generalized cross entropy approach, allows us to test spatial auto-correlation. The main result is that when there are local spillovers, their impact on knowledge production is different according to the geographical area and the sector.
Spatial Econometrics and Spatial Data Pooled over Time: Towards an Adapted Modelling Approach
2013
International audience
A spatio-temporal measure of spatial dependence: An example using read estate data
2013
International audience
Agreement and disagreement between expectations and realizations
1990
The objective of the paper is to measure the intensity of the relation between expectations and realizations for strategic variables of firms, such as production, demand or prices. An anticipation error reveals a disagreement which can be associated with the rational expectations hypothesis. The agreement coefficient between classifications, given by COHEN (1968) and LIGHT (1971) and calculated from a probability matrix, is used to define a direct measure of the disagreement between classifications. Comparison of the coefficients is used to test the rational expectations hypothesis.The coefficients are applied to business survey data of INSEE for France between 1974 and 1986.
La combinaison de prévisions multiples en présence d'objectifs multiples
1989
L'idée de combiner plusieurs prédicteurs pour générer des prévisions combinées plus fiables semble ne dater que de 1969, date de la publication de l'article de Bâtes et Granger (1969). Depuis lors on a constaté un foisonnement de publications tant théoriques qu'empiriques dans ce domaine et l'utilité pratique de la combinaison de prévisions individuelles y a été amplement démontrée.
Les normes comptables actuelles permettent-elles une comptabilisation des stock-options à leur juste valeur?
2006
In many countries, executive stock options (ESOs) have been subject to financial scandals during these last years, that encountered for a deep need of transparency, particularly about this compensation device for managers. The aim of this paper is to present, in a first part, the ways of expensing ESOs in through the European IRFS 2 and the American FAS 123 standards. The second part analyses ESOs accounting and its consequences, namely regarding the requirements about measuring this incentive mechanism at its fair value.
Comment renouveler la stratégie marketing ? Quand le cinéma peut inspirer les stratèges.
2006
Certains succes cinematographiques deviennent de veritables phenomenes de societe. Leur analyse offre de multiples pistes de reflexion concernant de nouvelles options de mise en relation de l'offre avec le marche.