Measurement and empiricalestimate of photosynthetically active radiation
By the result of measurement combined with theoretical analysis climatological estimate formulas for the photosynthetically active radiation energy and photo-quantum flux density of the direct and the global radiation are proposed by the AA.
Capital-land subsitution in urban housing: a survey of empiricalestimates
Synthèse et commentaires des résultats qu'ont donnés des recherches empiriques récentes sur l'estimation de l'élasticité de substitution capital-foncier dans le marché du logement urbain. La valeur estimée varie selon que l'on considère plusieurs
Relationships between surface long-wave radiation and surface meteorological elements under various sky conditions were analysed. Results were presented for isothermal emissivity together with mean relative error of estimated values, mean apparent
Explaining the variation in the empiricalestimates of academic knowledge spillovers
The paper presents a meta-regression analysis of the empirical studies exploring the relationship between academic knowledge spillovers and regional innovation. The results of the literature are found to depend on country effects, the level
Dimensional variation estimation : a methodological comparison
Three methods for estimating dimensional variation are described and compared using an experiment involving simulated data and using empirical data from two studies, one based on distance judgments and the other based on direct coordinate judgments
. The methods are shown to have different mathematical properties and to result in very different estimates.
An empiricalestimation of regional production functions for the U.S. manufacturing industry
Estimation et comparaison de cinq fonctions de production pour les 51 Etats des Etats-Unis. Données sur l'activité industrielle, année 1987. Test statistique. La nouvelle fonction CES apparaît la plus performante.
Empiricalestimation of intersectoral and interregional transfers of surplus value: the case or Italy
Transferts interrégionaux et intersectoriels pour les années 1970 et 1974. Modélisation de la théorie de Morishima. Estimation empirique à partir des données de comptabilité régionale, problèmes de méthodes posés par l'usage de paramètres exprimés
Cancer ; Cartography ; Estimation ; Matrix analysis ; Mortality ; Ohio ; Risk ; Simulation ; Spatial structure ; Statistics ; United States of America
estimation à partir de la statistique bayésienne: validité des estimations et impact des hypothèses incorrectes sur cette identification. Deux approches bayésiennes sont étudiées: l'approche standard et l'approche contrainte. Mortalité par tumeur au cerveau
Cross-subsidization in the telephone industry: empirical evidence from the pre-divestiture era
A cost function for local exchange companies is estimated using 1980 data operating in the state of New York, with, as outputs, the annual numbers of local and toll calls.
Data analysis ; Estimation ; Forecast;Prediction ; Graphics ; Infant mortality ; Matrix analysis ; Model ; North Carolina ; Spatial statistics ; United States
Demise at the edge of empire : native depopulation in Dominica
Demographic studies of early contact time in the lesser Antilles almost are nonexistent. AA. present a method for estimating the contact population based on cassava production and a contact figure (13,000 to 17,000). The French missionary, Raymond
Breton estimated a population of 4,000 to 5,000 in the mid-seventeenth century. There thus was considerable depopulation from contact with European sailors, who liked the island for its wood, fresh water, and geothermal springs. - (SLD)
The empirical relation between sunshine and radiation and its use in estimating evaporation in North East England
(1965-1974) ; Cycle de l'eau ; Durée d'insolation ; England ; Estimation ; Evaporation ; Evapotranspiration ; Evapotranspiration potentielle ; Formule de Penman ; Géographie physique ; Insolation ; North East England ; Radiation ; Rayonnement
formules établissant la relation entre les deux séries de données. Il paraît opportun de retenir deux formules différentes, l'une pour l'hiver, l'autre pour le reste de l'année. La première, surtout, améliore sensiblement l'estimation de
Estimating viability and competitiveness of farms in transformation countries. - Concepts, indicators, and difficulties
The intention of this article is just to expose the main problems of an analysis of farms in TC and to sketch some general approaches for a solution. In so far the results should be regarded as preliminary and much (empirical) work remains
British planning policy and access to housing : some empiricalestimates
Estimation des effets réducteurs du système de planification (en termes d'offre foncière) sur les coûts du logement, les densités résidentielles, l'accession à la propriété. Analyse des résultats d'une étude des conséquences économiques de ce