不锈钢复合管缺陷概率的事故树分析

运用事故树分析研究不锈钢复合管的缺陷概率重要度和危险重要度。结果表明焊缝裂纹不但发生概率比较大,而且影响比较严重,因此降低复合管缺陷发生概率应优先考虑降低焊缝裂纹的产生。提出了影响质量的主要因素及改善质量的优先顺序,也为其他结构的机电产品提供了风险分析的途径。     

固相萃取——液相色谱分析蔬菜中多种苯甲酰脲类昆虫生长调节剂残留量

[目的]建立一种同时测定蔬菜中多种苯甲酰脲类昆虫生长调节剂残留量的方法。[方法]样品经过乙腈提取,ENVI-18固相萃取小柱净化,以乙腈-甲酸（0.05%）为流动相,配备Symmetry C18柱、紫外检测器（258nm）的高效液相色谱仪对待测组份进行了分离和测定。[结果]空白蔬菜样品中除虫脲、灭幼脲、杀铃脲、氟铃脲、氟丙氧脲和定虫隆添加回收率分别在80.60%～100.80%,75.75%～98.91%,70.20%～98.33%,74.20%～95.00%,75.64%～95.50%和78.62%～97.30%之间,相对标准偏差（RSD,n=6）均小于10%,最低检出浓度（S/N=3）分别为0.013,0.014,0.014,0.013,0.013和0.014mg/kg。[结论]本方法操作过程简单快速,重复性好,能满足蔬菜中除虫脲、灭幼脲、杀铃脲、氟铃脲、氟丙氧脲和定虫隆残留量的检测要求。     

纺织品甲醛检测试剂盒研究

[目的]建立纺织品甲醛含量试剂盒检验方法。[方法]采用纳米TiO2显色络合技术,制作不同甲醛含量显色比对图谱,通过比较颜色深浅可快速确定所检验纺织品是否含有甲醛及是否符合标准限量要求。[结果]该项目研制的便携式快速测试复合试剂盒及配套仪器,灵敏度高,检出限较低。[结论]该方法操作便捷,适用于纺织品生产经营企业、质检部门对纺织品甲醛项目的现场快速检测。     

电视栏目收视率预测的一种方法

<正>电视栏目的收视率是可以预测的。长期以来,由于收视率的受控因素很多,许多流行的预测方法对于收视率的预测几乎是不可行的。笔者通过多年的对收视率的研     

The Effects of Environmental Factors on the Behavior of Chinese Managers in the Information Age in China

This paper examines the effects of environmental factors on the ethical behavior of managers using computers at work in Mainland China. In this study, environmental factors refer to senior management, peer groups, company policies, professional practices, and legal considerations. Ethical behaviors include attitudes to disclosure, protection of privacy, conflict of interest, personal conduct, social responsibility, and integrity. A questionnaire survey was used for data collection, and 125 mainland Chinese managers participated in the study. The results show that peer groups, professional practices, and legal considerations do influence the ethical behavior of mainland Chinese managers in the areas of social responsibility, integrity, and accountability. A discussion of the implications of the results is also provided in this paper.     

Determinants of Bribery in Asian Firms: Evidence from the World Business Environment Survey

While it is widely believed that bribery is ubiquitous among Asian firms, few studies have offered systematic evidence of such activities, and the dynamics of bribery in Asian firms have not been well understood. The research reported here used World Business Environment Survey data to examine some distinct characteristics of bribery in Asian firms and to empirically test 10 hypotheses on determinants of bribery. We find that firm characteristics such as firm size, growth rate, and corporate governance are important determinants of bribery activities at the firm level, and that Asian firms are more likely to bribe when faced with fierce market competition, corrupted court systems, convoluted licensing requirements, nontransparent interpretation of laws and regulations, inefficient government service delivery, and high taxes.     

Fixed Investment and Economic Growth in China

This paper attempts to investigate empirically the investment-growth relationship in China. Using the exogeneity framework pioneered by Engle et al. (1983) and Engle and Hendry (1993), we find that fixed investment is a key determinant of China's economic growth, which, surprisingly, has not been rigorously examined in the literature. The super exogeneity test results suggest that there exists a robust (or structurally invariant) relationship between capital formation and income growth, thereby giving credence to policy evaluation.     

为企业培养忠实“信徒”

<正>最近市场上一个明显的变化是企业不再不分时间、地点、场合高喊"以客户为中心!"和"顾客就是上帝!"。有些经理们开始把自己和客户放在一个平等的关系上去思考客户战略,识别客户中的"优质资产"和"不良资产",不仅要仔细倾听来自客户的赞许和不满,而且要想办法改变客户的自然属性,提高客户资产的质量和回报率。     

电视观众生活形态调研的重要价值及其研究新进展

<正>一、问题的提出电视观众的生活形态调研,至今都没有受到绝大多数电视台应有的重视。原因在于:有的电视台不知道有这样指导频道定位、节目制作和编排的调研,有的电视台虽然知道有这种调研,但对此的认识比较模糊。另外,还有的电视台曾经做过一次,但认为有一次这样的数据就能管上几年,或者是由于在上一次自身或请的调研机构没有做对或做好该调研,导致使用的效果不好,从而退缩而不再坚持。