Primary-school class composition and the development of social capital

We study the development of social capital through adult civic engagement, in relation to social capital exposure having occurred during childhood based on experiences outside the family at primary school. We assume that the types of classmates in attendance at a child's school would have influenced her/his social capital. To identify the types of classmates, we take advantage of the heterogeneity in the ability levels of British primary-school classes during the 1960s. At that time, some schools were practicing a method of streaming, whereas others were not. Using British National Child Development data, we construct a single score of civic engagement and evaluate the effect on adult civic engagement of attending homogeneous-ability classes versus nonhomogeneous-ability classes and being in high-, average- or low-ability classes when enrolled in streamed schools. Our results show that children who were grouped in homogeneous-ability classes developed a lower interest in civic engagement than their peers who attended mixed-ability classes (nonstreamed schools). Moreover, among children who attended streamed schools, a lower attitude toward civic engagement was observed among low-ability students. Thus, streaming appears to be detrimental to social capital development, especially for low-ability individuals.     

中央企业A股+H股整体上市及其对中国资本市场的影响

在分拆上市和单独境外上市对中国资本市场的不利影响日益凸显的情况下,中央企业A股+H股整体上市是兼顾企业利益和国家利益的现实选择。本文利用实证的研究方法,分析了中央企业先H股后A股、A股+H股同步和先A股后H股三种整体上市路径以及中央企业A股+H股整体上市对中国资本市场的影响,得出的结论是,三种中央企业A股+H股整体上市路径都能对我国资本市场的发展产生或多或少的积极影响;同时,中央企业A股+H股整体上市对包括中国香港在内的中国资本市场将产生多方面的积极影响。     

基于S3C2410A的μC/OS-Ⅱ和μC/GUI的整合移植

文章以Samsung公司的S3C 2410A为嵌入式硬件开发平台,提出一种将实时操作系统μC/OS-Ⅱ与图形用户界面μC/GUI整合构建成一个嵌入式应用系统的设计方案。该方案通过移植μC/OS-Ⅱ,初始化S3C 2410A内部LCD控制器,配置μC/GUI的相关文件和宏定义,总结出一套在S3C 2410A上具体的整合方法和移植步骤。最终测试表明该整合移植方法可行,系统平台运行稳定可靠。     

一种分层A~*路径搜索算法及性能

基于层次道路网提出了一种分层A*路径搜索算法,其特点是在同一层路网中采用A*算法,而在层次切换时采用一种启发式定向搜索入口节点的方法。既顾及了道路等级性和朝着目标行进等驾驶员的心理因素,又可以获得比传统算法更快的求解速度。实验表明,该算法是可行的、高效的。     

基于CD4052的温度采样系统的设计

在温度采样系统中,经常遇到单片机A/D引脚不够的情况,现以CD4052为基础,把软件操作系统分时复用的思想应用到单片机编程中,结合CD4052选通不同的通道,实现较少A/D引脚采样多处温度点的功能。     

上市公司收购境内企业外资股权的财务绩效研究

以我国上市公司收购海外资本持有内地企业股权的案例为研究对象,采用因子分析法对并购的财务绩效进行分析,结果显示:从样本总体来看,上市公司收购海外资本所持内地企业的股权后财务绩效得到了明显的改善;企业性质、规模和行业类别不同的上市公司样本并购后的财务绩效表现差别很大。     

A2/O工艺处理焦化废水

本文介绍了采用厌氧-缺氧-好氧生物脱氮工艺(简称A2/O工艺)处理焦化废水的工艺流程及原理,和主要构筑物及运行基本情况,并进行了分析总结。     

Teaching teenagers in finance: Does it work?

Many initiatives worldwide aim at improving financial literacy through targeted education programs, yet there is little evidence regarding their effectiveness. We examine the impact of a short financial education program on teenagers in German high schools. Our findings reveal that the training program significantly increases teenagers’ interest in financial matters and their financial knowledge, especially their ability to properly assess the riskiness of assets. Behaviorally, we observe a decrease in the prevalence of self-reported impulse purchases, but at the same time find no evidence of a significant increase in savings.     

发达国家中小企业税收政策对我国的启示

发达国家非常重视中小企业,采取种种税收鼓励措施扶持其发展。我国没有建立起规范的中小企业税收制度,政策优惠力度不足,增值税制不完善,需要进一步建立与完善有利于中小企业发展的税收政策体系,提高税法级次,调整现行政策,加大对中小企业的税收支持力度,促进中小企业的快速发展。     

企业并购溢价对企业绩效的影响研究——基于我国沪深A股的实证检验

近年来,我国并购市场如火如荼,越来越多的企业选择通过并购来实现自己的战略目标,迅速占据市场地位,进入新兴行业。在并购交易热潮下,高溢价似乎也成为并购重组的"标配",高溢价并购屡见不鲜。可是企业支付高溢价换来的是否为优质资产,其是否能给企业带来价值的提升,这些都是值得研究的议题。因此,文章基于我国并购交易市场,研究了国内上市公司并购溢价的绩效反应。运用相关性分析、多元回归分析等研究方法探讨了并购支付溢价对并购绩效的影响。最后,根据实证研究结果阐述本文的结论,给出相应的建议。研究结果表明:并购溢价在一定程度上代表了并购后协同效应的大小,支付的溢价越高表明预期达成的协同效应越大,企业后期的绩效表现会越好。