Farm size and productivity growth in the United States Corn Belt

In recent decades, agricultural production in the U.S. has continued to shift to large-scale operations, raising concerns about the economic viability of small and midsized farms. To understand whether economies of size provided an incentive for the consolidation of production, the study estimates the total factor productivity (TFP) of five size classes of grain-producing farms in the U.S. Heartland (Corn Belt) region. Using quinquennial Agricultural Census data from 1982 to 2012 the study also compares TFP growth rates across farm sizes to gain insight into whether observed productivity differences are likely to persist. The finding of a strong positive relationship between farm size and TFP suggests that consolidation of production has contributed to recent aggregate productivity growth in the crop sector. The study estimates the extent to which sectoral productivity growth can be attributed to structural change versus other factors including technological change. The study also explores some tradeoffs associated with policies that raise the productivity of small versus large farms.     

Early Experience and Later Outcomes of Education: Schooling Transition Evidence from Indonesia

This paper investigates the effect of early school experience on later educational attainment. Using the Indonesia Family Life Survey (IFLS), we find that students who repeat a grade at primary school are less likely to progress to junior high school. We also find that grade retention is associated with lower rates of transition from junior high school to senior high school. The relationship persists across years and samples. Meanwhile, the age of students when starting school and the hours they spend there have limited effects on whether they continue their schooling. We also observe that the effects of parental education and household income on the transition of students from primary school to junior high school are weakening. Given the long-term impact of grade retention, policymakers should be cautious when recommending it for underachieving children and should look for alternatives.     

小学生体型特征及其随年龄变化规律

该文对嘉兴市6个年级共600个小学生的人体测量数据，进行了统计分析，探讨了男女小学生体型随年龄变化的规律。     

高等职业技术教育专科学制改为二年的探讨

高等职业技术教育专科学制由三年改为二年是教育部根据市场需要、提高高等教育毛入学率的要求以及从减轻家长负担的角度考虑所做出的综合发展战略。我们要紧紧把握高等职业技术教育培养高技能型紧缺人才这一目标，重新定位，坚持以服务为宗旨、以就业为导向，进行广泛的校企合作。通过课程调整，实现与岗位的高匹配、零接轨，提高高等职业技术专科学生的就业率。     

Incentives and Performance in Real Estate Brokerage

This article has two objectives. One is to offer a theoretical model to study how the difference in commission structures affects the performance of agents at full-commission firms (e.g., RE/MAX agents) relative to other agents. The other is to provide an empirical test of the relative performance of full-commission agents. We predict that in equilibrium the selling price and the expected time it takes to sell a listing through a full-commission agent are the same as they are with a traditional agent. Our theoretical predictions are supported by our empirical results.     

对科学发展观指导下的高校思想政治教育工作的探讨

科学发展观是推进我国经济社会全面发展的指导思想,也是加强和改进大学生思想政治教育的指导方针。本文通过分析高校思想政治教育存在的普遍问题,提出了在科学发展观指导下的思想政治教育工作的新思路,新途径。     

《技术制图》新旧标准对照

以对照方法介绍了《技术制图》与《机械制图》中三个基础标准的适用范围、采标情况及基本内容。     

试论生态林业系统的时空观

生态林业系统具有时间、空间两个序列的开发前景。长周期,大跨度的生态林业生产可以分解为复合的短周期方式,使生态意识与经济效益有机结合。空间组合的多层次立体开发有效地利用了光、热、水、土资源,并获得最大生物量;地域组合着眼宏观,注重研究大型骨干及网络性生态工程问题。     

随机生产前沿方法的发展及其在中国的应用

本文对随机前沿生产函数模型的发展及其在中国生产率分析中的应用进行了评述。文章首先介绍随机前沿方法的基本原理、估计方法和在面板数据下对全要素生产率增长的分解,随后评述随机前沿生产函数模型的最新进展和在经验分析中的优势与作用,最后总结了在中国行业和地区经济增长研究中随机前沿方法的成果和不足,并探讨今后研究的发展方向。     

以人为本 管理的灵魂

企业要想在激烈的市场竞争中立于不败之地，必须加强管理，而管理的灵魂是以人为本。人本管理是指对管理者对象在自觉地遵守规章制度的基础上，所进行的一种高层次的管理方式。