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81.
kudayja parker 《The South African journal of economics. Suid-afrikaanse tydskrif vir ekonomie》2007,75(1):118-124
Sample selectivity bias arises in the estimation of education production functions when the process of selecting the sample is not independent of the value of the dependent variable. In this study, the dependent variable was a student's retention of microeconomics knowledge after a period of 6 weeks following the final examination. Potential sampling bias arises from a student's decision to participate or not to participate in the research. Results obtained from the Heckman selection model indicated minor sampling bias. Student ability and the male dominance in economics performance were overestimated in the OLS model. Student effort was underestimated. 相似文献
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《The Journal of economic education》2013,44(4):418-430
Instructors can use a computerized experiment to introduce students to imperfect competition in courses on introductory economics, industrial organization, game theory, and strategy and management. In addition to introducing students to strategic thinking in general, the experiment serves to demonstrate that profits of a firm fall as the number of competitors is increased in a market and that firms enter profitable markets. The authors have used the experiment in undergraduate classes on strategy and management as well as in master of business administration courses with great success. 相似文献
85.
葛家欢 《中国对外贸易(英文版)》2011,(14)
跨国公司在快速兴起的同时也面临着跨国破产问题.作为跨国破产问题的一部分,破产财产的清偿问题已成为业界关注的热点问题.本文首先阐述了跨国破产的定义、破产财产的范围及相关原则,随后以雷曼兄弟的破产案件为例,对跨国破产财产清偿原则作了进一步说明. 相似文献
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福斯特在作品《印度之行》中反映了印度在自然生态、社会生态、精神生态等方面的危机,表达了他良好的生态愿望——人与自然、人与人之间友好相处,进而实现整个生态和谐。 相似文献
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文章探索的是有关发动机性能测试数据方面的技术。对发动机需要测量的数据有转速、扭矩、功率、耗油率、耗油量、机油压力、机油温度、冷却水温等参数。发动机测试数据采集与处理系统由上位机和下位杌组成。下位机主要采用AT89C52单片机,用汇编语言编写相应的程序,用模一数转换器ADC0809把模拟量转换为数字量;而上位机采用PC机,程序语言用VB,存储数据采用Access数据库,最终实现试验数据的显示、存贮与打印等功能。 相似文献
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Abstract A critical objective for many empirical studies is a thorough evaluation of both substantive importance and statistical significance. Feminist economists have critiqued neoclassical economics studies for an excessive focus on statistical machinery at the expense of substantive issues. Drawing from the ongoing debate about the rhetoric of economic inquiry and significance tests, this paper examines approaches for presenting empirical results effectively to ensure that the analysis is accurate, meaningful, and relevant for the conceptual and empirical context. To that end, it demonstrates several measurement issues that affect the interpretation of economic significance and are commonly overlooked in empirical studies. This paper provides guidelines for clearly communicating two distinct aspects of “significance” in empirical research, using prose, tables, and charts based on OLS, logit, and probit regression results. These guidelines are illustrated with samples of ineffective writing annotated to show weaknesses, followed by concrete examples and explanations of improved presentation. 相似文献
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We use data from the 2006 round of the Russian Longitudinal Monitoring Survey to describe perceptions of the Russian population about the transition process and the role of the state compared with that of free markets. We find that about one‐half of the Russian population is disappointed with transition and a large majority is in favour of high state regulation and state provision of goods and services. High demand for government regulation and increased state intervention coexists with a low level of trust in government institutions and recognition of high and rising levels of corruption. The findings are consistent with the theory developed by Aghion et al. (2009) . In an environment with poor social capital, private business imposes negative externalities on the society and society chooses to demand more state regulation and tolerate corruption to reduce these externalities. We also find that individual perceptions of social capital and corruption co‐vary with the demand for regulation, as predicted by the theory. 相似文献