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81.
Samuel Cameron 《Journal of Bioeconomics》2002,4(3):195-222
This paper derives a model of participation in what is commonly known as ‘adultery’. Arguably the best sex survey in the world
is used to produce estimates of participation functions. The results show a great deal of support for bioeconomic models and
reveal some interesting similarities and differences between the male and female equations.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
82.
Samuel Sekyi Benjamin Musah Abu Paul Kwame Nkegbe 《Revue africaine de developpement》2020,32(2):150-162
The purpose of this paper is to investigate how farmers' access to credit affects agricultural commercialization in the northern Savannah ecological zone of Ghana. The study uses data from the Ghana Feed the Future baseline survey involving a total sample of 2,962 farm households. The study employs endogenous switching regression for ordered outcomes to account for endogeneity and self‐selection bias in the decision to access credit. The results from the estimations revealed that education, age, nonfarm business equipment, multiple crop production, and group membership are the variables influencing farmers' access to credit. Agricultural commercialization is determined by gender, age, marital status, household size, farm size, nonfarm business equipment, means of transport, group membership, assets index, multiple crop production, and location. In terms of causal effect, the results show that credit access stimulates higher commercialization. Thus policies that enhance farmers' access to credit are more likely to be successful in getting them to commercialize. 相似文献
83.
Modelling the Ecological Comorbidity of Acute Respiratory Infection,Diarrhoea and Stunting among Children Under the Age of 5 Years in Somalia 下载免费PDF全文
Damaris K. Kinyoki Samuel O. Manda Grainne M. Moloney Elijah O. Odundo James A. Berkley Abdisalan M. Noor Ngianga‐Bakwin Kandala 《Revue internationale de statistique》2017,85(1):164-176
The aim of this study was to assess spatial co‐occurrence of acute respiratory infections (ARI), diarrhoea and stunting among children of the age between 6 and 59 months in Somalia. Data were obtained from routine biannual nutrition surveys conducted by the Food and Agriculture Organization 2007–2010. A Bayesian hierarchical geostatistical shared component model was fitted to the residual spatial components of the three health conditions. Risk maps of the common spatial effects at 1×1 km resolution were derived. The empirical correlations of the enumeration area proportion were 0.37, 0.63 and 0.66 for ARI and stunting, diarrhoea and stunting and ARI and diarrhoea, respectively. Spatially, the posterior residual effects ranged 0.03–20.98, 0.16–6.37 and 0.08–9.66 for shared component between ARI and stunting, diarrhoea and stunting and ARI and diarrhoea, respectively. The analysis showed clearly that the spatial shared component between ARI, diarrhoea and stunting was higher in the southern part of the country. Interventions aimed at controlling and mitigating the adverse effects of these three childhood health conditions should focus on their common putative risk factors, particularly in the South in Somalia. 相似文献
84.
In this paper we develop a vintage model to gain a better understanding of the semiconductor industry and its role in recent U.S. productivity gains. Unlike previous work, in our model the observed price declines of individual chips are driven by the introduction of better vintages rather than by learning economies. Dominated chips, nonetheless, continue to be produced, for a time, due to sunk investments in chip‐specific production equipment. The model lends partial support to Jorgenson's hypothesis that an exogenous increase in Moore's Law could have generated the more rapid price declines, and faster productivity growth, seen after 1995. 相似文献
85.
Samuel V. Bruton 《Journal of Business Ethics》2004,49(2):179-187
The Golden Rule is endorsed in oneform or another by most cultures and majorreligions and is still espoused byphilosophers, business ethicists, and popularbusiness authors. Because it also resonateswith undergraduate business majors, it can bean effective teaching tool. This paperdescribes a way of teaching the Golden Rulethrough a series of business-oriented examplesintended to bring out its strengths andweaknesses. The method described alsointroduces students to some basic moralreasoning skills and acquaints them with a widerange of moral issues that arise in business. Kant's Formula of Humanity is discussed in thefinal section as a principle that overcomes atleast some of the Golden Rule's defects. 相似文献
86.
The impact of skewness in the hedger's objective function is tested using a model of hedging derived from a third‐order Taylor Series approximation of expected utility. To determine the effect of price skewness upon hedging and speculation, analytical results are derived using an example of cotton storage. Findings suggest that when forward risk premiums and price skewness in the spot asset have opposite signs, speculation increases relative to the mean‐variance model. When the signs are identical, speculation will decrease, contradicting findings of mean‐variance models. © 2006 Wiley Periodicals, Inc. Jrl Fut Mark 26:503–520, 2006 相似文献
87.
This paper examines whether firms which delay earnings announcements engage in earnings management. The cross–sectional version of the modified Jones 1995 model is used to estimate 'normal' accruals. Prior research has documented that, on average, delayed earnings announcements are associated with negative earnings surprises. Our evidence suggests that the market anticipates unfavorable earnings news when it observes reporting delays. As a consequence, late reporters appear to make the most of a bad situation by employing income–decreasing accruals in big–bath–type earnings management and in contractual renegotiations. We find that the magnitude of income–reducing abnormal accruals is related to the reporting lag. 相似文献
88.
We explore the economic importance of the private and public exercise of power in the execution of contracts and defense of property rights. We define power and represent it in a model of growth in a modern capitalist economy, borrowing themes from the classical economists (unproductive labor, profit-driven investment), Marx (the labor disciplining effect of unemployment), and the contemporary theory of incomplete contracts (the role of monitoring and enforcement rents). We use this model to identify the resources devoted to the exercise of power, which we term guard labor as we measure these in labor units. Data from the United States indicate a significant increase in its extent in the U.S. over the period 1890 to the present. Cross-national comparisons show a significant statistical association between income inequality and the fraction of the labor force that is constituted by guard labor, as well as with measures of political legitimacy (inversely) and political conflict. Some observations on the welfare implications of guard labor conclude the paper. 相似文献
89.
Samuel Hayes 《21世纪商业评论》2006,(3):16-17
授人以渔,非授人以鱼早在哈佛商学院刚刚创建初期,还是一个很小的学院时,我们就开始在商学院里采用法学院所用的案例教学的方法,也是从那时候开始,案例教学慢慢发展成为商学院教育的主流方法。在哈佛商学院的案例课程里,教授们都要求学生在课前认真研读布置的案例,并进行分 相似文献
90.
In this study the role of private placements of debt in the capital acquisition decision of public utilities is investigated. Whereas public offerings are sales of securities through financial intermediaries to the public-at-large, private placements are direct sales of securities by an issuing corporation to a limited number of institutional investors. In contrast to the negative stock price reactions typically found for public security sales, private placements are associated with significant positive abnormal returns in the shares of the issuing public utilities. Also, larger private placements appear to elicit a more favorable market response. Results are consistent with reduced information asymmetries and increased monitoring of the issuing firm resulting from the private placement. 相似文献