在万能工具显微镜上测量齿轮截面整体误差的研究

本文论述在万能工具显微镜上测量渐开圆柱齿轮截面整体误差的测量原理、测量方法和数据处理过程,并给出了测量实例。     

土族女性非农就业中的社会资本研究--以青海互助XZ村为例

本文通过对青海某村的调查,研究社会资本在土族女性非农就业过程中的作用、社会资本产生与维持方式,以及在对社会资本的运用过程中所体现出来的一种不同于传统社会的社会关系,分析了在从传统的农业向第三产业转变过程中乡村社会的变化。     

水书文字“酉、鸡”字形书写特色初探

水族古文字是一种发展不成熟的文字,在从“酉、鸡”字形书写特色,探索水族古文字的一般规律以及与甲骨文的联系。     

大功率晶体管的保护及应用

本文介绍了大功率晶体管的保护原理,大功率晶体管驱动保护集成电路ＵＡＡ４００２和霍尔传感器ＬＡ５０的功能和用法。     

交错的历史：1950年代的中国农村妇女——《村庄视野中的阶级、性别与家庭结构：以1950年代湘北塘村为中心的考察》

李斌《村庄视野中的阶级、性别与家庭结构：以1950年代湘北塘村为中心的考察》一书,以湘北塘村为个案,通过大量的口述资料和地方文献,质疑和深化了前人关于妇女解放和男女平等的经典论述。不同于以往革命史叙事下以国家为主体的论述,作者紧紧围绕性别、家庭和阶级三个维度,从女性视角出发,展现了农村妇女在解放前、土地改革时期、农业合作化时期和“大跃进”运动时期中切实的出境和生命体验,揭示了不同时期男女平等与不平等、妇女解放与未解放的复杂性,因而也刷新了我们对1950年代中国农村妇女的认识。     

Contents of heavy metals in arable soils and birth defect risks in Shanxi, China: a small area level geographic study

The burgeoning demands of China’s urbanization and industrial development put pressure on the resources of the entire country and have direct and indirect effects on the health of individuals, at times in areas far removed from cities themselves. Current evidence suggests that heavy metal pollution in soil, a common by-product of coal mining and other industrial activities, may be linked to risk of birth defects. We examine this hypothesis using small area level data including soil samples and detailed birth records from 2002 to 2004 from 97 villages in Shanxi province, a heavy coal-mining region. We find that soils containing arsenic, lead, and nickel are significantly correlated with the incidence of birth defects. In particular, we find a strong positive dose-dependent association of birth defects with lead, a moderate positive effect with arsenic, and a dose-dependent negative association with nickel. These results are consistent with the postulated link between arsenic and lead and human birth defects, but raise questions about the effects of nickel in this context. China’s rapid urbanization underscores the need for closer attention to the relationship between the health and the environment.     

论“受众研究”方法对视觉文化研究的启发

在视觉文化研究的推进过程中,针对受众及其意义生产行为的探讨无疑提供了有益的启发.首先,受众研究立足于主体的接受活动,不仅改变了接受者在视觉文化研究中长期缺席的困境,更促使主体内涵得到了全面而充实的辩证演绎.其次,受众研究从社会文化状况和技术性条件切入,打破了机械、僵化的观看格局,呈现出个体在不同情境下多元、动态的观看状况；第三,受众研究通过对真实、生动的视觉经验的询唤,突出了研究的“自反性”,从而有力地挑战了传统研究中“观念先行”的刻板模式.     

中国与印度尼西亚政治关系的历史发展

新中国与印度尼西亚的政治关系,经历55年的曲折发展,最终形成战略伙伴关系,这是两国人民智慧和友谊的结晶.中国印尼两国的战略伙伴关系,是建立在双方的共同利益和共同关心的重大问题达成高度共识的基础之上.     

Custom Epoch Estimation for Surveys

The paper provides a method for generating epoch estimates for time series survey data, allowing for different periods of time (or even point estimates) according to user demand. The method uses a modified kriging estimator, which suppresses the contribution of sampling error variability in order to guarantee that custom epoch estimates have an interpolation property. For the veteran population variable of the American Community Survey, we utilize a simple Brownian Motion model of the population process and derive the modified kriging estimator for this case. The tuning parameters of this population model can be calibrated to the data via simple formulas. We illustrate the application of this method to the generation of point estimates of veteran population, an important objective for Veterans Affairs.