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121.
Student-led clubs that seek to enhance entrepreneurial learning can be found in many universities. Yet, like many areas of extra-curricular activity in entrepreneurship education, their role in supporting learning has not been researched widely. The paper introduces research that addresses this gap and investigates the nature of the learning process student's encounter when they take part in clubs. The study explores the literature on entrepreneurial learning; it examines the different concepts and considers their contribution to understanding student learning experiences. From the literature, a conceptual framework is presented, highlighting the key aspects of entrepreneurial learning relevant for the field research. The methodology is introduced, including a series of qualitative studies and a survey of students. The study focuses on two types of student-led clubs ‘entrepreneurship clubs’ and ‘Enactus clubs’ and provides a comparative analysis. The findings reported show a range of student learning benefits that simulate important aspects of entrepreneurial learning, such as learning by doing, learning through mistakes and learning from entrepreneurs. More nuanced findings are also presented showing differences in learning benefits between club forms and heighten benefits for students taking leadership roles. Ultimately, the paper contributes to research in entrepreneurship by illustrating how student clubs support entrepreneurial learning.  相似文献   
122.
We use a three‐equation model to estimate a health production function for Australia using population data for 1996. Working at the level of the Statistical Local Area (n= 1335) we match (i) data on private practice medical services (derived from the Medicare scheme), (ii) mortality data derived from the de‐identified unit records produced by the Australian Bureau of Statistics (ABS), and (Hi) social and economic data from the Australian Census of Population and Housing (ABS 1997). We detect strong and statistically significant positive marginal effects of medical expenditure on health status as well as increasing returns. These findings are remarkably different from those of US health production studies, which have tended to lend support to the hypothesis of ‘flat‐of‐the‐curve (that is, zero marginal product) medicine’. Moreover, our conclusions are in stark contrast to those produced by Richardson and Peacock (2003, p. 6), who have argued that their econometric work indicates that ‘an increase in the [Australian] doctor supply is associated with increasing mortality’.  相似文献   
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This paper measures market dynamics within the U.S. grocery industry (defined as supermarket, supercenter, and club retailers). We find that despite being a mature industry, the grocery industry is remarkably dynamic. Each year retailers open or close roughly 7% of U.S. stores. We also find significant changes in the size of firms’ operations within markets over time. These changes in relative size are largely the result of expansion or contraction by incumbents rather than the result of firm entry or exit. In fact, entry and exit are quite rare, except by small firms. Moreover, only in small markets do new entrants gain substantial market share.  相似文献   
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Abstract

With Statement of Financial Accounting Standards 115 (FASB 1993), insurers are now in the awkward situation that almost half of the balance sheet is marked to market. This has created a material inconsistency with the way liabilities are reported, thus diminishing the usefulness of financial reporting to shareholders and potential new investors. Discussion has emerged in the industry about the process of market valuing liabilities. The American Academy of Actuaries has formed a “Fair Valuation of Liabilities” task force to compare and review various alternative methodologies. During 1995 the Society of Actuaries and New York University jointly sponsored a conference on “Fair Value of Insurance Liabilities.” Motivated by the conference, this paper attempts to bridge the gap between option pricing and actuarial appraisal methodologies. The author suggests we refocus attention toward the assumption-setting process, which is the key driver of a fair valuation. In this regard, this paper attempts to advance practice and methodology with respect to life insurance company valuation.  相似文献   
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A scenario-based integrated approach for modeling carbon price risk   总被引:1,自引:0,他引:1  
Carbon prices are highly dependent on government emission policies and local industrial compositions. When historical data does not exist or limited price data can only be sourced from another country, scenario analysis becomes the only tool for the modelling of future carbon prices. However, various plausible but equally possible scenarios can produce large variations in forecast carbon prices. In a traditional approach of scenario analysis, investment decisions or risk management strategies are proposed and analysed for each given scenario, optimal solutions are determined. However, when the number of scenarios becomes large, it often becomes too complex and intractable to have a clear view on the selection of investment decisions or risk-management strategies because these decisions and strategies are closely linked with each of the many scenarios. In this paper, it is proposed to use a stochastic mean-reversion model to represent future carbon price movements, but this model is calibrated to the forecast carbon prices of all the scenarios. In this approach, a single model is used to capture the underlying uncertainty and expectation of the stochastic carbon prices as projected by all the scenarios, carbon price risk can thus be modeled and analysed without the need for direct references to any specific scenarios. The modelling and management of long-term carbon-price risk are therefore purely dependent on future carbon price levels and volatilities of these scenarios, instead of on the scenarios themselves. Through such an approach, the optimization of investment decisions and risk management solutions can be much simpler because the forecasted carbon prices are the only input data.   相似文献   
127.
This paper investigates how HIV/AIDS has impacted the labor market in South Africa, focusing on its effect on wages and employment. This is done by matching individual level data with group specific cumulative AIDS mortality rates. Exploiting the panel nature of the data, I remove individuals whose productivity is most likely impacted by HIV/AIDS, and find evidence that cumulative AIDS mortality has led to reductions in wages of between 3 and 6% for the African population group (Black South Africans). Furthermore, I also find evidence that the epidemic has lowered employment in South Africa. This result is concentrated among those with the lowest levels of education and employment. Although not large in magnitude, these effects are widespread across a significant portion of the population, contributing to a substantial loss of income throughout the South African economy.  相似文献   
128.
We analyze the bias from predicting merger effects using structural models of price competition when firms actually compete using both price and promotion. We extend the standard merger simulation framework to allow for competition over both price and promotion and ask what happens if we ignore promotional competition. This model is applied to the super-premium ice cream industry, where a merger between Nestlé and Dreyer's was challenged by the Federal Trade Commission. We find that ignoring promotional competition significantly biases the predicted price effects of a merger to monopoly (5% instead of 12%). About three-fourths of the difference can be attributed to estimation bias (estimated demand is too elastic), with the remainder due to extrapolation bias from assuming post-merger promotional activity stays constant (instead it declines by 31%).  相似文献   
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