Factors affecting classroom participation and how participation leads to a better learning

The purpose of this paper is twofold. First, we analyze various course- and student-related factors that affect participation grades within several college accounting classes. The second purpose is to determine whether in-class participation grades have an effect on exam performance in these classes. We find that, unlike in liberal arts and sciences courses, in accounting courses, participation grades for female students do not differ from participation grades for their male counterparts, regardless of class level. Overall, course level and student major have no direct effect on participation grades; however, the accounting majors and students in the lower level courses have better attendance than do non-accounting majors and students in more advanced courses. We observe that class schedule, in particular class duration and semester, affects students’ participation performance. Lastly, we find that students who participate more in classroom discussions perform 25% better on exams than do those with lower participation grades. This relationship holds for the three elements of participation grading: frequency of participation, consistency of participation, and attendance.     

Effects of Ownership Structure on Capital Structure of Indian Listed Firms: Role of Business Groups vis-à-vis Stand-Alone Firms

The objective of this study was to explore the relationship between promoter ownership and capital structure of firms’ using a sample of Indian publicly listed firms for the period from 2006 to 2013. We find that the relationship between promoter ownership and leverage is inversely U-shaped in group-affiliated firms, whereas in stand-alone firms there is a U-shaped relationship. We argue that a substantial presence of family owners and the selection of managers from within the family play some role for such relationship in group-affiliated firms. On the other hand, the argument for observed relationship in stand-alone firms follows from alignment hypothesis, entrenchment hypothesis, managerial risk aversion hypothesis, and active monitoring hypothesis.     

Event satisfaction,leisure involvement and life satisfaction at a walking event: the mediating role of life domain satisfaction

Given the rising popularity of mass-participant sport, such as walking and running events, research has started to address whether these types of events could promote life satisfaction for participants. Nevertheless, the theoretical link between event participation and life satisfaction has not been fully elaborated. Using bottom-up theory of life satisfaction, this study examined the role of event satisfaction and the three facets of leisure involvement – attraction, centrality and self-expression – in people’s life domain satisfaction and life satisfaction. Participants (N = 236) were recruited from a walking event held in western Japan. The results of the study revealed that event satisfaction had positive, indirect effects on life satisfaction through satisfaction with family life and personal achievement. Attraction in walking also had positive, indirect effects on life satisfaction through satisfaction with family life, personal achievement and social life. In contrast, centrality and self-expression in walking were not associated with satisfaction with any life domains and life satisfaction. Findings from this study highlight the importance of life domain satisfaction in the relationship between event satisfaction, leisure involvement and life satisfaction. These findings also suggest that walking events can promote life satisfaction by providing the enjoyment of walking as physically active leisure.     

黄河中游流域土壤活性调查及其激活研究

研究了氢氧化钠、水玻璃、氢氟酸和磷酸对黄河中游不同地区土壤的侵蚀激活效果,结果表明,磷酸对土有很好的激活作用,掺入磷酸的土做成试件抗压强度较不掺加磷酸的土有很大提高,并且随着磷酸掺量的增多,强度继续增长,耐水性也有很大改善。红外及微观分析表明,磷酸能够改变土粒表面的羟基团,并且磷酸与土中的碳酸盐等生成肉丝状的磷酸钙晶体,分布在土粒的周围,胶结土壤。     

高凝油自动计量技术

沈阳油田是我国最大的高凝油生产基地,原油的凝固点在45～67℃之间。目前主要采用分离器玻璃管计量油井产量,其缺点是流程复杂,工作效率低,工人劳动强度大。随着沈阳油田的高凝油生产进入了高含水时期,原油伴生气急剧减少,采用玻璃管计量十分困难。针对高凝油生产的特点,该油田研究应用了低油气比的油井计量方式—高凝油自动计量技术,能够优化和简化目前的油井计量工艺,对油井产量进行高效、准确、及时的计量。     

基于ARM-Linux的防火墙设计

设计并实现了以ARM11内核S3C6410处理器和2片DM9000网卡控制器为平台的主动防火墙硬件平台,设计了DM9000的Linux驱动,以Linux操作系统的Netfilter防火墙框架为基础加入入侵检测模块和响应模块,形成一个以规则策略集为中心的集检测、防护和响应为一体的主动防御系统.     

供应商网络关系、网络结构与结点活性——美的空调的案例研究

借助于结点活性的概念来描绘供应商的属性与状态，并结合企业网络中网络关系与网络结构的理论划分原则，通过将项目投资组合理论与企业网络理论相结合，尝试从供应商网络关系、网络结构与结点活性三个角度对供应商网络效率进行分析。基于美的空调的案例研究发现，从网络关系视角来看，焦点企业与供应商之间的信息共享程度、企业高层及中基层员工的交流频率将对供应商网络效率产生重要影响；从网络结构视角来看，焦点企业与供应商之间的业务份额对于供应商网络效率的影响作用较为明显；而从结点活性视角来看，焦点企业在供应商客户群体中的排名以及彼此之间的技术合作强度是影响供应商网络效率的重要因素。本文的研究成果对于供应商网络管理实践以及焦点企业供应商选择具有重要的借鉴意义与指导作用。     

矩形压电振子式主动阀压电泵的设计及性能分析

文章从对压电泵的相关概念谈起,然后对矩形压电振子式主动阀压电泵的结构设计和工作原理进行详细的剖析,最后对矩形压电振子式主动阀压电泵的相关性能进行分析和说明。     

浅析太阳能在建筑节能领域中的应用

本文结合目前建筑设计的节能要求,对目前太阳能在建筑节能领域中的应用及发展前景作了比较与分析,谨供大家作参考之用。     

煤炭企业“主动安全型”员工培育研究

阐述了＂主动安全型员工＂培育的作用及内涵,并系统分析了煤炭企业员工安全意识及保安能力上的不足,提出了从＂意识强化、技能升级、行为管控、文化熏陶＂等4种关键环节上培育主动安全型员工的方法。