Parental substance abuse as a predictor of child maltreatment re-reports

This longitudinal study of child abuse and neglect cases closed after investigation examined the impact of parental substance abuse on family functioning and on subsequent referrals to child protective services. The findings support the hypothesis that parental substance abuse would have a negative impact on family functioning, which, in turn, would result in a higher rate of re-reports. As expected, substance abuse also had a direct impact on re-reports. It is critical that the child welfare system recognize and respond to parental substance abuse problems in these families through expanded and improved voluntary, and perhaps, mandatory services.     

全球化背景下高职教育的大文化意义

从理念、制度和物质三个方面对全球化背景下高等职业教育大文化的意义进行探究.认为,理念文化是高等职业教育的精神内核,制度文化是高等职业教育良性发展的保障,物质文化是高等职业教育生存壮大的基础.     

加快发展海南流通现代化的思考

现代流通业是整个国民经济中一个跨所有制,跨地区,跨行业的重要部分,是社会主义市场经济体制下经济运行的“中枢神经”和纽带。大力推进流通现代化,对优化资源配置,促进经济增长,降低流通成本,提高经济综合效益,繁荣商品市场,满足社会消费需求,规范市场经济秩序,优化海南省投资环境都具有重要而深远的意义。     

Developing creativity and problem-solving skills of engineering students: a comparison of web- and pen-and-paper-based approaches

Problem-solving is a key engineering skill, yet is an area in which engineering graduates underperform. This paper investigates the potential of using web-based tools to teach students problem-solving techniques without the need to make use of class time. An idea generation experiment involving 90 students was designed. Students were surveyed about their study habits and reported they use electronic-based materials more than paper-based materials while studying, suggesting students may engage with web-based tools. Students then generated solutions to a problem task using either a paper-based template or an equivalent web interface. Students who used the web-based approach performed as well as students who used the paper-based approach, suggesting the technique can be successfully adopted and taught online. Web-based tools may therefore be adopted as supplementary material in a range of engineering courses as a way to increase students’ options for enhancing problem-solving skills.     

人·虫·社会的悲哀——《变形记》和《促织》中“人变虫”的比较

《变形记》和《促织》,两部作品中都蕴含着作者设计的怪诞而荒谬的故事情节———"人变虫"。卡夫卡和蒲松林,两个不同年代不同国度的伟大作家,在构思上竟会有如此相类似的契合点,作者在表现对社会和现实强烈的控诉之外,还揭示了一个普遍存在着的深刻的社会现实:人的异化。而同时,异化后的"人"与现实生活中的社会人之间的冷漠,值得人深思。     

实验室一种改进的蒸发浓缩装置

介绍了有机合成实验室一种改进的蒸发浓缩装置的设计、组装及应用。应用所述降膜蒸发器,含热敏性化合物和溶剂的料液自加料器连续加入,溶剂在预先设定温度的降膜蒸发器中,在真空下快速蒸发,进入冷凝管被冷凝回收,被浓缩的物料连续进入收集瓶收集,整个过程溶剂蒸发迅速,料液停留时间短;蒸发器所设定的温度可通过发生水蒸气或循环水浴来实现。该装置缩短了蒸发或浓缩等单元操作的时间,降低了热敏性化合物的分解率。     

有机电还原反应

介绍了影响有机电还原的因素。     

国家公务员激励模式分析

随着人类社会知识经济的到来，人力资源开发与管理已成为现代管理的一个重要课题：在行政管理中．合科客观规律和实际情况的激励模式可以规范和引导公务员的行为方式和价值观念，有利于政府树立良好的形象和政风本文主要从物质激励、精神激励和公务员的自我激励三个方面分析了国家公务员的激励模式。     

关于《数学分析》教学内容改革的研究综述

20世纪90年代中期以来,在《数学分析》教学内容(包括教材)改革方面的一些重大问题上有着不同的意见和观点.这些意见和观点主要有:关于改革《数学分析》现有的内容体系和框架结构,是否应该用勒贝格积分理论改革目前《数学分析》的内容和体系,怎样处理好“初、高等微积分”与“大头分析”两种不同的内容体系;如何处理好数学知识的继承性与现代化的关系;关于极限理论的ε-语言和D-语言;如何解决好初学者学习极限理论的ε-语言等.     

The permanence and global attractivity of a competitive system with feedback controls and toxic substance

In this paper, we consider a nonautonomous competitive system with feedback controls and toxic substance. Some average couditions for the permanence and global attractivity of the system are obtained. It is shown that our results are generalization or improvement of those of Zhao, Jiang and Lazer E Nonlinear Analysis ： Real World Applications, 5 （ 4 ） （ 2004 ）, 265 - 276 1, Xia, Cao, Zhang and Chen Journal of Mathematical Analysis and Applications ,294 （ 2 ） （ 2004 ）, 503 - 5221 and Chen [ Nonlinear Analysis ： Real World Applications, in press ].