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1.
Despite the enormous impact of food crises on restaurants, limited understanding of their long-term impacts and associated factors has undermined crisis managers’ ability to handle crisis situations effectively. This article investigated the long-term impact of food crises on the financial performance of restaurant firms and identified the factors that influenced this impact. This explanatory study examined the case of Jack in the Box, whose 1993 Escherichia coli scare was the first and largest restaurant-associated food crisis in modern times. An event study method was used to uncover stock price movements of Jack in the Box, in conjunction with 73 unrelated food crises that occurred from 1994 to 2010. Stock prices of Jack in the Box exhibited significantly negative responses to other firms’ food crises, moreover, the negative spillover effect was stronger if the crisis occurred closer in time, was similar in nature, and was accompanied with no recall execution. These findings shed light on the long-term financial impact of food crises and offer insights for crisis managers to develop more effective crisis management strategies.  相似文献   
2.
In premium auctions, the highest losing bidder receives a reward from the seller. This paper studies the private value English premium auction (EPA) for different risk attitudes of bidders. We explicitly derive the symmetric equilibrium for bidders with CARA utilities and conduct an experimental study to test the theoretical predictions. In our experiment, subjects are sorted into risk-averse and risk-loving groups. We find that revenues in the EPA are significantly higher when bidders are risk loving rather than risk averse. These results are partly consistent with theory and confirm the general view that bidders' risk preferences constitute an important factor that affects bidding behavior and consequently also the seller's expected revenue. However, individual subjects rarely follow the equilibrium strategy and revenue in our experiment is lower than in the symmetric equilibrium.  相似文献   
3.
This article introduces two parametric robust diagnostic methods for detecting influential observations in the setting of generalized linear models with continuous responses. The legitimacy of the two proposed methods requires no knowledge of the true underlying distributions so long as their second moments exist. The performance of the two proposed influence diagnostic tools is investigated through limited simulation studies and the analyses of an illustration.  相似文献   
4.
This study tests the validity of using the CAPM beta as a risk control in cross‐sectional accounting and finance research. We recognize that high‐risk stocks should experience either very good or very bad returns more frequently compared to low‐risk stocks, that is, high‐risk stocks should cluster in the tails of the cross‐sectional return distribution. Building on this intuition, we test the risk interpretation of the CAPM's beta by examining if high‐beta stocks are more likely than low‐beta stocks to experience either very high or very low returns. Our empirical results indicate that beta is a strong predictor of large positive and large negative returns, which confirms that beta is a valid empirical risk measure and that researchers should use beta as a risk control in empirical tests. Further, we show that because the relation between beta and returns is U‐shaped, that is, high betas predict both very high and very low returns, linear cross‐sectional regression models, for example, Fama–MacBeth regressions, will fail on average to reject the null hypothesis that beta does not capture risk. This result explains why previous studies find no significant cross‐sectional relation between beta and returns.  相似文献   
5.
陈依   《魅力中国》2014,(2):169-169
"Teaching is for the sake of no needing teaching" is the core ofYe Sheng-tao' s reading teaching approach. Actually, this teaching approach is effective in the teaching ofaU subjects. So a good English learning method depends a lot on teacher' s teaching approach. Therefore, teacher should help students to shape an effective English learning method with a sound learning habit so as to efficiently acquire English.  相似文献   
6.
张立新 《魅力中国》2014,(2):273-274
本文对篮球跳投技术的诸因素进行分析和探讨,旨在改进提高篮球跳投技术,身体素质和心理素质,在训练中“增加对抗性”的跳投训练,提高运动员在比赛实战中的跳投命中率。运用文献资料法,归纳总结法,对影响跳投命中率的三大主要因素进行了分析研究。通过对篮球跳投技术诸因素的分析和论述,提出的“增加对抗性”为主的训练方法。影响跳投命中率的三大主要因素是身体素质、技术因素、心理因素,在训练中,有针对性地对这些因素进行训练,可以达到进一步提高跳投命中率的目的。  相似文献   
7.
区域农村水利保障能力的评价方法及实证研究   总被引:1,自引:0,他引:1  
水利作为农村的经济命脉,不仅关系到”防洪安全、供水安全、粮食安全”,也是”经济安全、 生态安全、国家安全”的重要支撑,但农村水利基础设施建设滞后、水利管理机制弱化、农村水利供给不 足等问题相当突出,一定程度上制约了农村地区经济社会的发展,着力开展区域农村水利保障能力研究尤 为重要。为此,该文在构建了区域农村水利保障能力评价指标体系的基础上,利用层次分析法、极差变换 法和线性评价模型构建了区域农村水利保障能力综合评价方法,并以湖北省为例,选取2000~2010年各项 指标的基础数据对上述评价方法进行了实证检验。  相似文献   
8.
针对安徽省创新方法TRIZ理论推广工作的现状,采用PEST环境分析方法,从政治、经济、社会和技术等因素进行分析,来确定这些要素的变化对推广创新方法TRIZ理论发展过程的影响,对安徽省下一阶段的推广工作如何更好的开展提供一些建议,为提高安徽省自主创新能力提供有效的方法和决策支持。  相似文献   
9.
宋慧勇 《科技和产业》2014,14(10):83-87
结合江苏省高校科技创新成果转化的现状,构建高校科技成果转化效率评价体系,以江苏省39所本科院校为研究对象,采用分类DEA法,将评价指标的选取和成果转化效率的测算有机结合,分别测算39所江苏省高校、28所其他本科院校的科技成果转化的总体效率。研究表明211高校的科技成果转化效率相对较高,18所非DEA有效的其他本科院校中有11所高校的规模报酬递增。  相似文献   
10.
介绍了乳液法合成阳离子聚丙烯酰胺污水絮凝剂的制备方法,合成了性能优良的絮凝剂,对其性能和结构进行了测试和表征,并对其固含量进行了测定,探讨了多个因素对聚合物特性黏数及转化率的影响.  相似文献   
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