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排序方式: 共有182条查询结果,搜索用时 8 毫秒
91.
This paper focuses on how a firm's characteristics affect the market valuation of its research and development (R&D) spending. We derive a valuation model based on the capital market arbitrage condition. Using the generalized method of moments and data from the Eurozone countries to estimate this model yields interesting results. Several firm characteristics (size, firm growth, and market share) positively affect the relationship between firm value and R&D spending, while others (free cash flow, dependence on external finance, labor intensity, and capital intensity) exert a negative effect. Therefore, we conclude that the effectiveness of R&D spending depends on firm characteristics. 相似文献
92.
Much Ado About Nothing: the Mixed Models Controversy Revisited 总被引:2,自引:2,他引:0
Viviana B. Lencina Julio M. Singer Edward J. Stanek III 《Revue internationale de statistique》2005,73(1):9-20
We consider a well-known controversy that stems from the use of two mixed models for the analysis of balanced experimental data with a fixed and a random factor. It essentially originates in the different statistics developed from such models for testing that the variance parameter associated to the random factor is null. The corresponding hypotheses are interpreted as that of null random factor main effects in the presence of interaction. The controversy is further complicated by different opinions regarding the appropriateness of such hypothesis. Assuming that this is a sensible option, we show that the standard test statistics obtained under both models are really directed at different hypotheses and conclude that the problem lies in the definition of the main effects and interactions. We use expected values as in the fixed effects case to resolve the controversy showing that under the most commonly used model, the test usually associated to the inexistence of the random factor main effects addresses a different hypothesis. We discuss the choice of models, and some further problems that occur in the presence of unbalanced data. 相似文献
93.
A diagrammatic analysis of the market for cruising taxis 总被引:2,自引:0,他引:2
J. Enrique Fernndez L. Joaquín De Cea Ch Julio Briones M. 《Transportation Research Part E: Logistics and Transportation Review》2006,42(6):498-526
A diagrammatic approach is used to study the characteristics of the cruising taxi market. For cost modeling, both taxi operator and passenger are taken as service producers. The former provides his vehicle operation and the latter, his waiting and travel time. Market demand is defined as a function of generalized price. It is shown that under short and long run conditions a unique equilibrium exists for a deregulated industry and it corresponds to a monopolistic competition. The relations among the free market equilibrium, social optimum and second best solution are analyzed. Regulations are studied in order to find their social convenience. 相似文献
94.
Revisiting the Impact of Order Effects on Sensitivity to Scope: A Contingent Valuation of a Common‐Pool Resource 下载免费PDF全文
Julia Martin‐Ortega M. Azahara Mesa‐Jurado Julio Berbel 《Journal of Agricultural Economics》2015,66(3):705-726
While many studies have employed stated preferences methods to estimate the value of non‐market ecosystem goods and services, contingent valuation (CV) still generates a significant amount of criticism. Besides ethical concerns, two of the key criticisms relate to insensitivity to scope and order effects. We examine the expectation that the presence of order effects in stepwise disclosure procedures affects the degree of scope sensitivity. We use data from a CV exercise asking farmers in Southern Spain to value two different levels of guarantee of water supply for irrigation in a context of water scarcity. We find that despite order effects being present, they do not affect the existence or the degree of sensitivity to scope. We conclude that, in the light of the mixed evidence found in the literature and the results of our study, it does not seem justified to ascribe order effects and their connection with sensitivity to scope to study design alone (e.g. step‐wise versus advanced disclosure, top‐down versus bottom‐up). The nature of the environmental good under valuation also matters. Our study of irrigation water as a common‐pool resource suggests that, when clear private benefits also exist, these appear to override any ‘good cause dumping effect’ that might arise from the public good component. 相似文献
95.
This article focuses on the rapid development of the “modernizing wholesale” channel, with a study of guava traders and farmers in Mexico. This adds to a literature on modernization of food markets that has focused primarily on exports, supermarkets, and large processors and addressed less wholesale in general and rarely modernizing wholesale per se. We find that participation in the modernizing wholesale channel, relative to the traditional broker channel, requires greater land, regional, and nonland assets, as well as confers a premium controlling for quality, and spurs employment in harvesting and handling locally. 相似文献
96.
Wagner A. Kamakura María A. Ramón-Jerónimo Julio D. Vecino Gravel 《Journal of the Academy of Marketing Science》2012,40(2):236-251
Despite the fact that the dominant theories of the internationalization of small-medium enterprises (SMEs) prescribe a dynamic
and evolutionary process for the firm, most of the empirical research on this topic has been based on in-depth studies of
a few cases, or cross-sectional surveys, which cannot capture the dynamic nature of exporting decisions that occur over many
years. In this study we propose an empirical framework for studying the internationalization of SMEs that: (a) identifies
latent internationalization stages based on multiple indicators of the firms’ engagement and strategies in foreign markets
over multiple years, and (b) analyses the firms’ movements among these latent states over time, as a function of main characteristics
of the firms and their markets at each point in time. 相似文献
97.
Julio Abad-González Cristina Gutiérrez-López Ana Salvador 《Applied economics letters》2018,25(18):1296-1300
Using a multilevel regression model, this article aims to find determinants of banking solvency in the European Union. The endogenous variable is defined as the capital ratio determined by stress tests. Both internal (financial ratios and sovereign debt exposures) and external (macroeconomic indicators) variables are proposed as covariates. The results reveal that capitalization, earnings, assets structure and exposure to PIIGS (Portugal, Italy, Ireland, Greece and Spain) sovereign debt are significant among the former, and economic growth, interest and exchange rates, and real estate prices among the latter. 相似文献
98.
99.
The aim of this paper is to evaluate the long‐term impact on Spanish individual income tax (IRPF) compliance of the amnesty measures granted in 1991 within the framework of the 1988–91 income tax reform programme. To that end, we combine time‐series techniques with outlier detection methods and the Bai and Perron (1998) test for the endogenous estimation of structural breaks. On the basis of the analysis of the monthly IRPF tax collection series from 1979 to 1998, we find that the amnesty had no effect on tax collection in either the short or the long term. By contrast, we find evidence of the permanent positive impact caused by the legislative and administrative measures linked to the IRPF reform process begun in 1988. 相似文献
100.
One of the most difficult administrative problems in implementing broad-based environmental taxes concerns the tax treatment of imports, particularly imports of final goods that are producedusing intermediate goods that are taxed domestically. Provided there is no joint production, taxing imported final goods based on the amount of intermediate goods consumed in their domestic production will raise marginal costs by the same amount for domestic and foreign producers. This rule is impossible to implement when final goods are produced as joint products, however, as in the petroleum refining and petrochemical industries. In such cases arbitrary assignments of intermediate good inputs to final goods-for example, on the basis of relative output weight or value-are likely to change the relative marginal costs of domestic and foreign producers. 相似文献