Search results for "finance"
showing 10 items of 4676 documents
A biproportional filter to compare technical and allocation coefficient variations
1997
International audience; In input-output analysis there are two alternate possibilities between Leontief's mechanism (fixed technical coefficients) and Ghosh's mechanism (fixed allocation coefficients). Testing the long term consistency of these mechanisms entails comparing input-output matrices over time. This paper challenges the value of proportional filters (separate comparison of column and row coefficients) and introduces the biproportional filter which allows simultaneous comparison of column and rows. An application is proposed using French input-output tables for 1980 and 1993. The stability of column coefficients cannot be taken for granted and generally, for any sector, both rows …
About the criteria of output coincidence for forecasts to determine the orientation of the economy (application for France, 1980-1997)
2000
This note indicates that the method of output coincidence for forecasts used to determine if sectors are demand-driven or supply-driven in an input-output framework mixes two effects, the structural effect (choosing between demand and supply driven models) and the effect of an exogenous factor (final demand or added-value). The note recalls that another method is possible, the comparison of the stability of technical and allocation coefficients, generalized by the biproportional filter: if for a sector, after biproportional filtering, column coefficients are more stable than row coefficients, then this sector is declared as not supply-driven (but one cannot decide that it is demand-driven a…
Haemopoietic effects of 7 alpha, 17 beta dimethyltestosterone.
1979
Some haematic parameters were investigated in female COBS mice treated with 7 alpha, 17 beta Dimethyltestcsterone (DMT). The drug causes an increase of circulating platelets in normal mice. Bone marrow graft from DMT-treated donors facilitates in irradiated mice repopulation of white blood cells and platelets but lowers % survival. These data are interpreted on the basis of a commitment and a loss of self-maintenance induced by DMT on CFUs compartment. © 1979 The Italian Pharmacological Society.
Territorial tripolarization in Bolivia : genesis and current situation
2012
The Bolivian urban system is outstanding : three major cities concentrate about half of the nation’s population and employment. Their territories’ trajectories lead us to question their economic role in the face of the successful economic achievement of Potosi and Tarija, territories well endowed in natural resources. We wanted to highlight the Bolivian current territorial tripolarization, firstly by studying its emergence, through the study of their economical history; secondly, by investigating the most recent economical data in order to display the strengths and weaknesses of this tripolarized system. Each component of the tripole is situated in a different geographical setting. In the W…
The Bologna Process in France : Origin, Objectives and Implementation
2008
05010; In this paper, we will try to show why the evolution of the French higher education system has led to a deadlock and a deteriorating ranking on the world scene, how the new scheme has been effectively and rapidly adopted, but unfortunately, why this adoption has failed to achieve the initial objectives of transforming the French system into a more competitive one.
Emergence of statistically validated financial intraday lead-lag relationships
2014
According to the leading models in modern finance, the presence of intraday lead-lag relationships between financial assets is negligible in efficient markets. With the advance of technology, however, markets have become more sophisticated. To determine whether this has resulted in an improved market efficiency, we investigate whether statistically significant lagged correlation relationships exist in financial markets. We introduce a numerical method to statistically validate links in correlation-based networks, and employ our method to study lagged correlation networks of equity returns in financial markets. Crucially, our statistical validation of lead-lag relationships accounts for mult…
The Border Effect in Spain
2005
This paper analyses the border effect in Spain using a unique dataset on intranational trade flows over the period 1995–98. The results indicate that, after controlling for market size and distance, Spanish regions trade around 22 times more with the rest of Spain than they do with OECD countries. Moreover, the size of the Spanish bias is lower in the case of the Spanish regions’ exports than in the case of imports, although the difference is not statistically significant in most cases. Finally, the border effect is not uniform across Spanish regions.
Is the Border Effect an Artefact of Geographical Aggregation?
2011
The existence of a large border effect is considered as one of the main puzzles of international macroeconomics. We show that the border effect is, to a large extent, an artefact of geographic concentration. In order to do so we combine international flows with intra-national flows data characterised by a high geographic grid. At this fine grid, intra-national flows are highly localised and dropping sharply with distance. The use of a small geographical unit of reference to measure intra-national bilateral trade flows allows to estimating correctly the negative impact of distance on shipments. When we use sector disaggregated export flows of 50 Spanish provinces in years 2000 and 2005 split…
Éléments de réflexion sur les impacts économiques du réchauffement climatique sur la filière vitivinicole en Bourgogne.
2007
Actes:CD-Rom et en ligne sur http://www.u-bourgogne.fr/chaireunesco-vinetculture/Actes%20clima/Actes/Actes.htm; Les différentes conséquences des modifications climatiques ont des aspectséconomiques sur la filière vitivinicole particulièrement complexes et extrêmement variablesselon les régions et les vignobles à travers le monde. En Bourgogne, quatre cépages (aligoté,chardonnay, gamay, pinot noir essentiellement), aux réactions spécifiques, sontparticulièrement concernés.La difficulté de l'analyse (puis de l'évaluation dans une étape ultérieure) tient àl'existence d'une multitude de situations spécifiques que l'on se propose de commencer àcaractériser ici. La réflexion proposée n'est qu'une…
On site consolidation of burnt and partially charred wood in dry conditions
2011
Abstract Forty years ago in a xx th-century church in Torino, a small fire partially burned some of the decorative external boards of the sound-box of the organ. The focus of this present work was to find a treatment able to consolidate partially burnt wood in dry conditions, in which the external charred layer would be lost if not well preserved because of its incoherence. The product had to be applied onsite on an architectural structure intended to be reused again (and not simply exhibited). This circumstance is rarely encountered in the conservation of wooden Cultural Heritage. The efficacy of treatments was evaluated on the basis of a suitable and original experimental methodology, whi…