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1.
Entrepreneurship has a leading role in economic development worldwide and, although it has usually been considered as a male dominated activity, recent studies emphasize how significant the contribution of women today is: in 2010, almost 42% of entrepreneurs in the world were, indeed, women (GEM, 2010).  相似文献   

2.
《Risk analysis》2018,38(6):1128-1142
Lumber Liquidators (LL) Chinese‐manufactured laminate flooring (CLF) has been installed in >400,000 U.S. homes over the last decade. To characterize potential associated formaldehyde exposures and cancer risks, chamber emissions data were collected from 399 new LL CLF, and from LL CLF installed in 899 homes in which measured aggregate indoor formaldehyde concentrations exceeded 100 μg/m3 from a total of 17,867 homes screened. Data from both sources were combined to characterize LL CLF flooring‐associated formaldehyde emissions from new boards and installed boards. New flooring had an average (±SD ) emission rate of 61.3 ± 52.1 μg/m2‐hour; >one‐year installed boards had ∼threefold lower emission rates. Estimated emission rates for the 899 homes and corresponding data from questionnaires were used as inputs to a single‐compartment, steady‐state mass‐balance model to estimate corresponding residence‐specific TWA formaldehyde concentrations and potential resident exposures. Only ∼0.7% of those homes had estimated acute formaldehyde concentrations >100 μg/m3 immediately after LL CLF installation. The TWA daily formaldehyde inhalation exposure within the 899 homes was estimated to be 17 μg/day using California Proposition 65 default methods to extrapolate cancer risk (below the regulation “no significant risk level” of 40 μg/day). Using a U.S. Environmental Protection Agency linear cancer risk model, 50th and 95th percentile values of expected lifetime cancer risk for residents of these homes were estimated to be 0.33 and 1.2 per 100,000 exposed, respectively. Based on more recent data and verified nonlinear cancer risk assessment models, LL CLF formaldehyde emissions pose virtually no cancer risk to affected consumers.  相似文献   

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Public Organization Review - Using the fire and rescue service (FRS) sector in Sweden as a case, this paper examines actors who engage in tasks that go beyond their traditional policy areas, and...  相似文献   

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准确追踪并度量东道国国家风险状况,对于跨国资本运作风险决策是不可或缺的.对国家风险度量的研究分为基于多属性决策的国家风险评估和基于资本资产定价理论的系统性风险建模两大类.研究选取金砖五国作为研究对象,对各国系统性风险的动态性进行建模,并通过考察系统性风险与基于多属性的ICRG国家风险评级的相关性,剖析两类国家风险度量的差异性.研究发现金砖五国的系统性风险波动较大,但近年波动在减缓;虽然受美国次贷危机冲击较大,但很快恢复平稳,抵抗外界风险能力增强.与反映一国的整体国家风险状况的ICRG国家风险评级相比,系统性风险更多是反映金融风险状况,能提供更高频的风险收益信息,二者互为补充,可提高跨国资本投资决策的合理性与准确性.  相似文献   

5.
Urbain Thierry Yogo 《LABOUR》2011,25(4):528-543
Using Cameroonian data, this paper investigates the effects of social network on wage. Social network is measured in terms of using friends and relatives while looking for a job. In order to evaluate the effectiveness of social network with regard to wage, we make use of Heckman selection model. Our findings contrast with previous studies. After factoring the endogeneity and sample selection, we find that Job seekers who make use of social network exhibit a wage premium of 1.53 per cent of average wage. We also find that social network contributes to explain wage differential according to gender and institutional sectors (formal versus informal).  相似文献   

6.
Beryllium is the strongest of the lightweight metals. Used primarily in military applications prior to the end of the Cold War, beryllium is finding new applications in many commercial products, including computers, telecommunication equipment, and consumer and automotive electronics. The use of beryllium in nondefense consumer applications is of concern because beryllium is toxic. Inhalation of beryllium dust or vapor causes a chronic lung disease in some individuals at concentrations as low as 0.01 microg/m3 in air. As beryllium enters wider commerce, it is prudent to ask what risks this might present to the general public and to workers downstream of the beryllium materials industry. We address this question by evaluating the potential for beryllium exposure from the manufacturing, use, recycle, and disposal of beryllium-containing products. Combining a market study with a qualitative exposure analysis, we determine which beryllium applications and life cycle phases have the largest exposure potential. Our analysis suggests that use and maintenance of the most common types of beryllium-containing products do not result in any obvious exposures of concern, and that maintenance activities result in greater exposures than product use. Product disposal has potential to present significant individual risks, but uncertainties concerning current and future routes of product disposal make it difficult to be definitive. Overall, additional exposure and dose-response data are needed to evaluate both the health significance of many exposure scenarios, and the adequacy of existing regulations to protect workers and the public. Although public exposures to beryllium and public awareness and concern regarding beryllium risks are currently low, beryllium risks have psychometric qualities that may lead to rapidly heightened public concern.  相似文献   

7.
Expert and Public Perception of Risk from Biotechnology   总被引:4,自引:0,他引:4  
Risk perceptions of a series of biotechnology applications were examined in a public (nonexpert) sample and an expert sample. Compared with the experts, the public perceived all biotechnology applications as more risky. Both groups perceived food-related applications to be riskier than medical applications. Compared with the public, experts perceived both food and medical applications as less harmful and more useful. Experts also judged the risks posed from medical biotechnology applications as more familiar and acknowledged by people and science. Lay estimates of the risk of food applications were predicted by potential harm, potential benefits, science knowledge, and familiarity; experts' estimates were predicted only by harm and benefits. Lay estimates of the risk of medical applications were predicted by potential harm; experts' estimates were predicted by potential benefits, number and type of people exposed, and science knowledge. We discuss the implications of the results for risk communication about and management of different types of biotechnologies.  相似文献   

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聚焦创业者从首次创业失败经验中的学习,基于以往文献提出创业新手、新创企业与行业特征对创业失败学习影响的理论假设,通过深度访谈法获取首次创业失败的情景材料,使用内容分析方法来验证理论假设。研究发现,首次创业失败学习内容包括自我学习、内部学习与外部学习3个方面;高科技创业者更倾向内部学习,非高科技创业者更倾向自我学习与外部学习;首次创业经营时间较短的创业者更倾向自我学习和内部学习;创业失败财务成本较高的创业者倾向自我学习,创业失败财务成本较低的创业者倾向内部学习与外部学习。  相似文献   

11.
The purpose of this article is to describe the evaluations involved in the Yale Bereavement Study (YBS), a three-year NIMH and NCI-funded longitudinal study conducted from January 2000 through May 2003. The quantitative and qualitative questions included in the YBS gave the respondents an opportunity to describe their most recent loss, rate and review their past losses, and assess all aspects of their current life situations. In this article, the first author describes, in a qualitative manner, the ways in which this assessment, per se, appeared helpful and not harmful to the respondents. Also, developed here is the implication for potential application of a modified version of the YBS which could be used in both research and clinical practice.  相似文献   

12.
This study examines if Chief Executive Officer (CEO) duality reduces the firms’ agency cost in Bangladesh. The agency costs are measured as two efficiency ratios: ‘expense ratio’ and ‘asset utilization ratio’. The finding is that, there is no significant relationship between CEO duality and agency costs. These findings imply that, duality may have given the CEOs enormous powers; it may have reduced the check and balance or board’s ability to exercise the governance (monitoring) function, which is not helpful to enhance firm efficiency. This study contributes to the global debate on CEO duality and provides a new avenue of knowledge on CEO duality and firm efficiency in the context of an emerging economy.  相似文献   

13.
We study the effect of board size on firm value in Australia. Using a large sample of Australian firms over the period 2001–2011, we find strong evidence of a negative relationship. We show that firms with a large board are associated with CEO compensation that is sensitive to firm size, but not to firm performance. This incentive to accumulate assets is congruent with the fact that firms with a large board also exhibit lower operating performance and higher operating costs. Furthermore, we find that the effect of board size is stronger in small firms. This result might explain why earlier studies, which focused on large Australian firms, found board size to have little impact on firm value.  相似文献   

14.
Cramer[1]指出了一般Logistic违约率模型容易出现的问题并提出了边界Logistic违约率模型.本文采用了不同于Cramer(2004)的Bayes分析方法对边界Logistic模型的后验分布的性质进行了分析,从理论上说明了边界Logistic违约率模型更优越的原因.然后利用中国公司数据展开实证研究,不仅找到了Cramer问题的中国证据,同时还发现Bayes边界Logistic违约率模型不仅能够克服Cramer问题,而且对临界值不敏感,同时预测效率也相对较高.  相似文献   

15.
In this paper we address the question whether insider ownership affects corporate performance. Evidence from studies dealing with Anglo-Saxon countries is rather inconclusive, especially because results seem to be significantly affected by endogeneity. Economically, this is due to the fact that in these countries insider ownership seems to be mainly driven by management’s compensation contracts. We argue that Germany is different in this regard, as insider ownership is often related to family control, stock-based compensation is less widespread, and the market for corporate control used to be less developed. Starting from this presumption, our data allows an unbiased observation as to whether insider ownership affects firm performance. Using a pooled data set of 648 firm observations for the years 2003 and 1998, we find evidence for a positive and significant relationship between corporate performance—as measured by stock price performance, market-to-book ratio and return on assets—and insider ownership. This relationship seems to be rather robust, even if we account for potential endogeneity by applying a 2SLS regression approach. Furthermore, the results hold for a sub-sample of firms that did not have a stock-based compensation program in place. Moreover, we find outside block ownership as well as more concentrated insider ownership to have a positive impact on corporate performance. Overall, the results indicate that ownership structure might be an important variable explaining the long term value creation in the corporate sector.
Benjamin MoldenhauerEmail:
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16.
本文采用部分可观测的Bivariate Probit估计方法,对2001年至2009年中国1729家上市公司进行回归检验,发现机构投资者持股比例降低了公司违规行为倾向,同时增加了公司违规行为被稽查的可能性。该结论在控制了机构投资者变量内生性的因素后仍旧稳健。进一步研究表明,相比公司经营违规,机构投资者对信息披露违规倾向的影响更强。另外,相比证券机构投资者,养老保险基金、社保基金、企业年金持股的公司中违规公司比例更低。除此以外,机构投资者对公司违规的抑制与检举作用并不受其它公司治理变量的影响。本文的研究表明中国机构投资者在预防与打击上市公司违规行为方面发挥了重要的作用,并且也为上市公司与监管部门提供了治理和防范企业违规的线索。  相似文献   

17.
Abstract. Increasing impatience reduces search efforts of unemployed job seekers and therefore decreases the exit rate from unemployment. Also, impatience reduces reservation wage and increases the exit rate. To determine the overall effect of impatience on the exit rate from unemployment, we distinguish between exponential and hyperbolic time preferences. Search effort dominates the reservation wage and decreases the exit rate from unemployment if individuals have hyperbolic, rather than exponential, preferences. Using the French sample of the European Household Panel Survey, we found that search effort has a strong effect on the duration of unemployment, whereas the reservation wage is not significant. This result shows that the job seekers have hyperbolic preferences. Hyperbolic preferences affect problems associated with job search and policies aimed at reducing unemployment.  相似文献   

18.
Compensation packages are widely used to motivate top executives. Pay dispersion among a firm's executives, however, can be associated with the antithetic effects of social comparison and individual motivation, with unclear implications for the company. We focus on innovation activities, which represent an important channel through which pay dispersion can affect firm performance, and test our predictions by exploring innovative output as a function of executives’ pay dispersion in a panel of US firms. We find that executive pay dispersion acts as a double‐edged sword. On the one hand, the higher the dispersion in variable pay, the higher the innovation. On the other hand, the larger the dispersion in fixed pay, the lower the innovation. Results are robust to a number of tests, such as restricting the analysis to executives with direct responsibility for innovation projects and considering individual incentives in the form of cash pay.  相似文献   

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One of the most important classical typologies within the organizational learning literature is the distinction between adaptive and generative learning. However, the processes of these types of learning, particularly the latter, have not been widely analyzed and incorporated into the organizational learning process. This paper puts forward a new understanding of adaptive and generative learning within organizations, grounded in some ideas from complexity theories: mainly self‐organization and implicate order. Adaptive learning involves any improvement or development of the explicate order through a process of self‐organization. Self‐organization is a self‐referential process characterized by logical deductive reasoning, concentration, discussion and improvement. Generative learning involves any approach to the implicate order through a process of self‐transcendence. Self‐transcendence is a holo‐organizational process characterized by intuition, attention, dialogue and inquiry. The main implications of the two types of learning for organizational learning are discussed.  相似文献   

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