Search results for "Econometric"
showing 10 items of 3780 documents
The timeline of trading frictions in the European carbon market
2012
We evaluate the quality of prices of EU-ETS, the most active European derivative market for greenhouse gas emissions allowances (EUAs). So far, this market has had two phases, a trial phase (from 2005 to 2007) and a commitment phase (from 2008 to 2012). The true value of a trial-phase EUA at the beginning of 2008 was inevitably zero because it could not be used in the commitment phase to cover emission targets. However, continued rumors of over-allocation of EUAs led to an early collapse of the market by May 2007. We study whether this market breakdown and the subsequent outbreak of the international financial crisis had a persistent effect on the quality of the commitment phase. We provide…
Resultados de las Fusiones Empresariales: Una Aproximación Empírica en el Sector Asegurador
2001
ESTE articulo analiza los efectos de las fusiones sobre la rentabili-dad, gestion y situacion financiera en el sector de seguros en Espa-na, siendo este un marco apenas investigado hasta ahora. El estu-dio se centra en todas las sociedades anonimas fusionadas en 1992, y su informacion contable durante el periodo 1991-1995. Para ello hemos rea-lizado un analisis agregado en el que se evalua si el conjunto de socieda-des fusionadas muestra estadisticamente diferencias significativas cuan-do se compara con el conjunto de las sociedades no fusionadas, mediante el estudio de la media de ciertos indicadores desde el ano previo a la fusion. Los resultados indican que no hay diferencias despues de …
Aspetti economici e commerciali dell'arancia di Ribera
2010
The Sicily is the first region for orange cultivation in Italy. This sector, throughout the ages, has been characterized by a decrease of the invested areas and by a reduction of the fresh product’s demand; in the meantime, the competitiveness of the new producer countries is increased for a better commercial organization and for lower production costs. The aim of the paper is to improve the knowledge of orange cultivation in Ribera area, in the province of Agrigento (Sicily). It is carried out a microeconomic analysis on a sample of 20 farms to determine profitability of orange cultivation by means of various economic indicators (production costs, profits, net incomes). The business survey…
Adapting to High Temperatures: Effect of Farm Practices and Their Adoption Duration on Total Value of Crop Production in Uganda
2021
In this article, we use spatially granular climate data merged with four waves of household survey data in Uganda to examine empirically the relationships among high temperatures, total value of crop production, and the adoption and adoption duration of two sustainable agricultural practices (organic fertilizer adoption and maize–legume intercropping). We do this using a fixed-effect model with instrumental variables to address potential endogeneity issues. Our findings indicate that the adoption of these practices has a positive effect on the total value of crop production, and such effect increases monotonically as temperatures increase from long-term averages. Moreover, the number of yea…
Conservation of forest biodiversity using temporal conservation contracts
2012
Abstract Temporal conservation contracts are used to protect biodiversity in privately owned lands worldwide. We examine how stand characteristics and habitat requirements of target species affect the contract length in a boreal forest context. We develop an integrated optimization model and apply the model with data on endangered species occurring in spruce forests in Finland. The results suggest that a cost-effective conservation policy for protecting privately owned forest land involves both short- and long-term contracts between landowners and environmental agencies. The higher the conservation objective, the more intensively long-term contracts should be assigned. Managed stands should…
Les cliniques privées en Algérie : logiques d’émergence et stratégies de développement
2015
Cet article analyse le contexte et les strategies individuelles qui ont prevalu a l’emergence d’un secteur hospitalier prive en Algerie. Il montre que le developpement des cliniques privees en Algerie a eu lieu dans un contexte macroeconomique contraint et dans le cadre d’un systeme de sante dysfonctionnel qui ont interagi avec les attentes et les comportements des fondateurs des cliniques. Ces fondateurs repondent a des motivations financieres, mais aussi a des objectifs d’autonomie professionnelle. Ils combinent diverses strategies afin d’augmenter le volume de leur patientele, notamment la constitution de reseaux formels et informels.
Municipalities’ Decision to Care: At Home or in a Nursing Home
2020
AbstractAn almost ideal demand system for long-term care is estimated using data from Norway, where the split of long-term care between home care and care in nursing homes is determined by municipalities. Previous literature has barely addressed what determines municipalities’ or other organizations’ allocations of resources to the sub-sectors of long-term care. The results show that home care is a luxury, while nursing home care is a necessity with respect to total expenditures on long-term care. Municipalities respond to high unit costs for home care by reducing that type of care. Municipalities are highly responsive to variations in the need for the two types of care and seem to provide …
Survey of organochlorines in Finnish watercourses by caged mussel method
2002
Monitoring organochlorine compounds with caged common lake mussels (Anodonta piscinalis) in the pulp and paper mill recipient watercourses of Finland annually from 1984 produced many statistically significant time trends. A decrease of chlorophenols and chloroguaiacols originating from chlorobleaching were observed in all recipients in parallel with the decreasing discharges from the mills. Metabolites of chlorophenols, chloroanisoles and chloroveratroles were constant. Significantly elevated PCB concentrations were measured in four watercourses. At two of these areas, the PCB concentrations were constant. In contrast, a statistically significant increase of PCB (and DDE) was found at one r…
Regression with imputed covariates: A generalized missing-indicator approach
2011
A common problem in applied regression analysis is that covariate values may be missing for some observations but imputed values may be available. This situation generates a trade-off between bias and precision: the complete cases are often disarmingly few, but replacing the missing observations with the imputed values to gain precision may lead to bias. In this paper, we formalize this trade-off by showing that one can augment the regression model with a set of auxiliary variables so as to obtain, under weak assumptions about the imputations, the same unbiased estimator of the parameters of interest as complete-case analysis. Given this augmented model, the bias-precision trade-off may the…
Stable sharing rules and participation in pools of essential patents
2019
Abstract For pools of essential patents I study whether a pool's sharing rule is stable against arbitrage, so that the pool's members have no incentive to trade patents. I show that the only stable rule is the numeric proportional rule, which gives each member a share of the pool's profit equal to its share of the pool's patents. I study how the stable rule affects firms' incentives to participate, and I show that firms with few patents tend to remain outside the pool. I look at the trade off between stability and participation, and I show that as trade dilutes their shares, members prefer the stable rule. I consider individual licenses, stand-alone patents, integration, and R&D. The result…