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111.
In this article, we focus on the estimation of outpatient expenditures with panel data. We model the logarithm of expenditures and consider five different models. The first two are two-part and sample selection cross-section models. Two-part panel data models turn out to be inappropriate for dealing with expenditures. We thus estimate sample selection models with panel data: one without a lagged dependent variable and two with a lagged dependent variable. These two latter models differ in their assumptions on the variance of the residuals. Modelling heteroscedasticity may indeed be important to avoid the bias due to the retransformation problem. We show that lagged dependent variables are important factors for heteroscedasticity. For the models with state dependence, we provide a new solution to the initial conditions problem by controlling for generalised residuals. We establish that panel data models highly improve the correlation explained by the model in the time-series dimension without damaging the fit in the cross-section dimension. For all indicators of fit, the model with state dependence and heteroscedasticity seems to dominate the others. 相似文献
112.
P Sabatier 《Administrative science quarterly》1978,23(3):396-417
Through a review and integration of the heretofore rather distinct literatures dealing with (1) policy making in administrative agencies, (2) the use of scientific and technical information in public policy, and (3) the utilization of policy research, this paper develops preliminary conceptual frameworks of the variables affecting the acquisition and the utilization of technical information by administrative agencies. Although previous research, based largely upon case studies of a few decisions within a single agency, has resulted in numerous bivariate hypotheses, the number of variables involved and recognized problems of generalizing the results suggest that future research be oriented toward a number of strategies capable of simultaneously examining the effect of numerous variables over large numbers of cases. 相似文献
113.
114.
Proof of concept processes in UK university technology transfer: an absorptive capacity perspective 总被引:1,自引:0,他引:1
Successful research commercialisation within the university domain is predicated upon basic research being developed into technology that will attract funding, ultimately resulting in entities such as University spin-out companies or licensing arrangements. This development process involves considerable risk and uncertainty and may require substantial resources to fund early stage operations while returns are uncertain. Hence there is a need to explore risk-minimisation approaches relating to proving the potential for development while concurrently allocating resources in an incremental manner. This paper focuses on the development of the Northern Ireland Proof of Concept (PoC) process within a University Science Park Incubator (USI) as a particular approach to addressing these challenges inherent in the United Kingdom University technology transfer. Furthermore, Absorptive Capacity has emerged in the literature as an appropriate theoretical framework or lens for exploring the development and application of new technology. Therefore, the aim of this paper is to explore the PoC process within a USI as a means for improving the commercialisation of University technology transfer using an Absorptive Capacity perspective. A multiple case analysis of PoC applications within a UK university is described. From the findings it emerges that Absorptive Capacity influencing factors such as levels of R&D investment, prior knowledge base and integration of stakeholder and technology planning all impact on PoC outcomes. In addition a number of process improvement areas for PoC are identified in relation to the influencing factors within the Absorptive Capacity framework. 相似文献
115.
This research tests a model of the effects of personalized product placements on consumer preference, both for the embedded brand and the digital entertainment product in which that brand is embedded. The latter has yet to be examined in the traditional product placements literature. The results of two studies conducted in the domain of eBooks are presented. Evidence suggests that when pre-existing rankings of brands were systematically collected and used to design personalized product embeds, participants were willing to pay more for the eBook when it contained a favourably (vs. unfavourably) ranked brand, but only when the brand embed was subtle (as opposed to obvious). Study 2 also finds that personalized product placements enhanced consumers’ recall of, and probability of choosing the embedded brand. Results suggest that both the digital entertainment product and the embedded brand can benefit from the strategic use of personalized product placements. 相似文献
116.
Valerie Cerra 《Journal of International Economics》2010,81(2):184-196
We revisit the dramatic failure of monetary models in explaining exchange rate movements. Using the information content from 98 countries, we find strong evidence for cointegration between nominal exchange rates and monetary fundamentals. We also find fundamentals-based models very successful in beating a random walk in out-of-sample prediction. 相似文献
117.
The importance of the institutional environment on multifunctional farming systems in the peri-urban area of Brussels 总被引:6,自引:1,他引:5
Valerie Vandermeulen Ann Verspecht Guido Van Huylenbroeck Henk Meert Ankatrien Boulanger Etienne Van Hecke 《Land use policy》2006,23(4):486-501
The influence of local and regional policies on the uptake of multifunctional farming systems is analysed. The conceptual framework of how regional and local policies can influence farmers’ behaviour is empirically verified by analysing data on uptake of diversification and environmental management by farmers located in the Brussels’ peri-urban area. In a two-stage model, farmers’ participation and behaviour to influence local policy-makers is also examined. It has been found among other things that, in a municipality that attaches greater importance to environmental issues, the uptake of agri-environmental measures is higher and that promotion of local agriculture will encourage farmers to start processing or selling products on their farms. 相似文献
118.
Valerie Møller 《Development Southern Africa》2001,18(2):217-238
South Africans were promised a better life for all in the run-up to the first democratic elections in 1994. Local governments throughout South Africa are seeking to improve service delivery to underdeveloped areas in line with the new policy. The seven councils of the Durban Metropolitan Area have a vision for the city, to be realised by the year 2015, that residents will live in acceptably serviced housing and will enjoy a generally high quality of life that can be sustained. To monitor performance towards achieving this vision, the Urban Strategy Department of the Durban Metropolitan Council initiated a project to guide budget allocations and measure the impact of local government actions on residents' perceptions of quality of life. This article reports on results from the pilot study for the project, which included a sample survey of 300 residents and in-depth interviews with a cross-section of 60 residents. The baseline study revealed vast differences in living conditions, access to services and life satisfaction across neighbourhoods. Satisfaction with housing and the neighbourhood, as indicated by disinclination to move, were major factors contributing to life satisfaction of Durban residents. 相似文献