统计技术在冶金企业质量管理体系中的应用

对安钢第四轧钢厂在建立IS090012000版质量管理体系中如何确定、实施、控制和评审统计技术的问题,进行了研究和探讨.     

关于R—积分的区问可列可加性

本文将数学分析中R—积分(即黎曼积分)的区间可加性加以推广,给出了R—积分区间可列可加性.     

用Powell法求颗粒尺寸分布

本文用最优化理论中的Powell直接法求激光粒度仪中的颗粒尺寸分布。数值模拟及对标准颗粒的实测表明,该算法的计算精度高,能较好地解决粒度仪通常存在的计算结果随初始设定值变化的多值性问题。     

基于虚拟仪器的土壤水分测试系统开发

采用PCl-812PG数据采集卡,基于虚拟仪器技术,以Delphi作为平台开发了土壤含水量测试系统,对AZS -2土壤水分传感器的功能进行了扩展。标定结果及实际应用表明,此系统性能稳定,精度较高。     

Partner Choice and the Differential Retreat From Marriage

The contemporary retreat from marriage in the United States has had a differential impact across socioeconomic and racial groups. Here, 1990 marriage rates and propensities for Virginia, North Carolina, and Wisconsin are analyzed regarding (a) the likelihood that persons in different groups ever marry and (b) patterns of partner choice with respect to race and educational level. Marriage remains strong in most race‐education groups but is substantially lower among Blacks and among those with less than 12 years of education. Patterns of partner choice have shifted to show greater symmetry between the educational levels of brides and grooms. Changes have been modest with regard to the level and pattern of interracial (Black‐White) marriage. Marriage is increasingly a union of equals, but a union chosen more by Whites than by Blacks and more by the well educated than by the poorly educated.     

论“组织性学习”与“学习型组织”

在当今世界,如果任何学校或组织要想兴旺发达并始终处于领先地位,就必须具有高度的适应性和持续不断改进与变革的潜能。只有通过“组织性学习”以期达到和逐渐成为“学习型组织”。然而,许多学生、学者都不能正确区分“组织性学习”、“学习型组织”与“一个学习型组织”之间的区别。为此,有必要澄清这三个术语在使用上的模糊性,进而揭示它们的主要区别、深层含意、宽泛影响及其应用价值。     

英汉思维差异对英汉句子修饰语位置的影响

英语民族和汉语民族在思维上的差异对英语和汉语语言的结构形态产生了不同的影响。外语教学的难点和翻译中容易出现错误的地方也正是这些差异之处。本文在对英汉句子重心及修饰语位置的异同进行对比的基础上,探讨英汉句子结构的异同,并对产生句子结构差异的英汉民族思维方式进行对比,有助于我们更加深刻地理解英汉语言差异所产生的原因,掌握这些差异的规律,解决外语教学中的难点,提高运用英语语言的能力。     

三种渠道断面结构形式的适用及经济性分析

通过对常见的田间三种渠道特性夏适应性分析,反应出推广U型砼槽的必要性。给我们今后在水利工程田间渠道结构形式的选用上,提供了帮助。     

The Division of Household Labor in Germany and Israel

We compare the patterns of household division of labor in Germany and Israel—two countries that share key elements of the corporatist welfare regime but differ in their gender regimes—and evaluate several hypotheses using data from the 2002 International Social Survey Program. Although time constraints and relative resources affect the division of household labor and women’s housework in both societies, we find that in Germany the gender order of household labor is more rigid, whereas in Israel the spouses’ linked labor market status exerts distinctive effects. We also find significant relationships between gender ideology and the division of household labor. We discuss the theoretical advantages of approaching the comparative study of gender inequality from the vantage point of family and gender regimes.