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排序方式: 共有342条查询结果,搜索用时 15 毫秒
21.
This paper provides comparative theoretical and numerical results on risks, values, and hedging strategies for local risk-minimization versus mean-variance hedging in a class of stochastic volatility models. We explain the theory for both hedging approaches in a general framework, specialize to a Markovian situation, and analyze in detail variants of the well-known Heston (1993) and Stein and Stein (1991) stochastic volatility models. Numerical results are obtained mainly by PDE and simulation methods. In addition, we take special care to check that all of our examples do satisfy the conditions required by the general theory. 相似文献
22.
Margaret Ann Bock Marsha Read Christine Bruhn Garry Auld Kathe Gabel Georgia Lauritzen Y. Lee Judiann McNulty Denis Medeiros Rosemary Newman Susan Nitzke Melchor Ortiz Howard Schutz Edward Sheehan 《International Journal of Consumer Studies》1998,22(1):25-37
Abstract The objective of this research was to ascertain the gender-and ethnic-related factors that influence what one eats. This survey was conducted using a validated, pilot-tested questionnaire in 11 states and the District of Columbia, which were participating in the W-182 Western Regional Research project. The results indicated that the factors that influence what one eats differ by gender and ethnicity. Men were very much influenced by likes and dislikes, and by their spouse or significant other. Women were influenced by likes and dislikes, and health. Food likes/dislikes and concerns about health and weight were among the leading four factors for all ethnic groups. Food likes/dislikes were the top factor influencing what is eaten by 51% or more of Asians, Pacific Islanders, Caucasians and Hispanics. Concern about health was the top factor for 62% and 58%, respectively, of African Americans and Native Americans. 相似文献
23.
Corporate Environmental Disclosure: Contrasting Management's Perceptions with Reality 总被引:2,自引:0,他引:2
This paper's purpose is to assess how management's perceptions regarding certain aspects of environmental reporting relate to the firm's actual reporting strategy. Toward that end, we propose a model where a firm's environmental disclosure is conditional upon executive assessments of corporate concerns. The study relies on a survey that was sent to environmental management executives from European and North American multinational firms enquiring about the determinants of corporate environmental disclosure. Responses from these executives were then contrasted with their firms' actual environmental reporting practices, which was measured using a comprehensive multi-criteria grid. Results show that there is a relationship between environmental managers' attitudes toward various stakeholder groups and how those managers respond to the stakeholders via the decision to disclose and the actual disclosures made. Our model provides a perspective as to how a firm responds to the numerous stakeholders to whom it must be accountable. This accountability in turn relates to how the company communicates its actions to society in order to achieve or maintain its social legitimacy. 相似文献
24.
Modeling Methods for Discrete Choice Analysis 总被引:2,自引:3,他引:2
Ben-Akiva Moshe Mcfadden Daniel Abe Makoto Böckenholt Ulf Bolduc Denis Gopinath Dinesh Morikawa Takayuki Ramaswamy Venkatram Rao Vithala Revelt David Steinberg Dan 《Marketing Letters》1997,8(3):273-286
This paper introduces new forms, sampling and estimation approaches fordiscrete choice models. The new models include behavioral specifications oflatent class choice models, multinomial probit, hybrid logit, andnon-parametric methods. Recent contributions also include new specializedchoice based sample designs that permit greater efficiency in datacollection. Finally, the paper describes recent developments in the use ofsimulation methods for model estimation. These developments are designed toallow the applications of discrete choice models to a wider variety ofdiscrete choice problems. 相似文献
25.
Denis Nadolnyak 《Applied economics》2013,45(33):4331-4342
Governments around the world are forced to react to disasters caused by weather. The agricultural sector is particularly susceptible to weather extremes and adverse climate conditions. In the US, agricultural disaster payments account for a significant part of total agricultural subsidies. The payments, and their distribution, are more important in the areas most affected by disastrous weather events, usually coinciding with areas of pronounced impact of the El Nino Southern Oscillation (ENSO). In this article, the impact of weather and climate, as well as some economic variables, on disaster payments is analysed using county level data from four states in the southeastern United States. The results suggest that weather and climate variables explain most of the crop disaster payments at the county level while socioeconomic variables do not, suggesting that advancements in weather and climate forecasts could be helpful in planning for disaster compensation. 相似文献
26.
27.
Using a panel from the Russian Longitudinal Monitoring Survey (1994–2004), this paper investigates to what extent Russian households have been able to maintain their living standards while suffering income shocks. Consumption smoothing is modelled by means of an equilibrium correction mechanism, which disentangles short‐run dynamics and long‐run equilibrium adjustments. GMM estimation is used to control for individual household effects in the presence of dynamics. Additionally, we differentiate between food and non‐food consumption, positive and negative shocks, rural and urban areas, and several levels of poverty risk. We find that dynamics are important in the consumption equation, and that estimates are sensitive to imputation errors in home food production. No strong claims can be made regarding heterogeneity in smoothing behaviour. 相似文献
28.
Andy Denis 《Review of Political Economy》2017,29(3):432-439
Following Mises’s foundational paper, ‘Economic Calculation in the Socialist Commonwealth’, first published in 1920, writers in the Austrian tradition have argued that socialism is impossible, because under socialism there would be no private property in the means of production, and without that private property economic calculation could not take place. In the article ‘Economic Calculation: Private Property or Several Control?’, published in this journal in 2015, I argued that this was mistaken. Not private property, but several control, was required for economic calculation, and since several control is consistent with public ownership, this argument for the impossibility of socialism fails. Another article, ‘Private Property and Economic Calculation: A Reply to Andy Denis’, by Bylund and Manish, published in this issue of the Review of Political Economy, defends the traditional interpretation of Austrian reasoning, contending that my argument fails. My rejoinder re-states the issues, addressing, and, ultimately rejecting, the Bylund and Manish critique. 相似文献
29.
Denis Larocque 《International Journal of Technology and Design Education》2002,12(3):271-271
Other Index
Index 相似文献30.
The strategic importance of quality management has grown in importance in recent years. However, although the competitive implications of adhering to a quality agenda have been much alluded to within the literature, the evidence from a review of published studies suggests that service quality and strategy issues have been addressed as separate concerns by researchers. This study examines the components which facilitate the quality implementation process. The factor analysis of data emphasises the importance of ‘senior managerial commitment’ and ‘employee resourcefulness’ in quality implementation initiatives and offers support to the growing implementation initiatives and offers support to the growing literature arguing for a greater consideration of the human dimension in quality implementation programmes. It is proposed that further research needs to be carried out to examine mangerial attiudes towards the service quality implementation process and to assess some of the practical issues involved in introducing quality initiatives in hotel organisations. 相似文献