适用于电力推进船舶的高升压比Z源逆变器

为克服电力推进船舶变换器的不足,结合Z源逆变器的原理,提出一种新式高升压比Z源逆变器。对该新式Z源逆变器工作原理进行详细分析,并与普通高升压比Z源逆变器和传统Z源逆变器的各项稳态数据进行对比。与传统的Z源逆变器相比,该新式Z源逆变器升压能力强,能适应负载大范围的变化。仿真结果证实了新式Z源逆变器具有较高的性能,适合在电力推进船舶上应用。     

基于Z39.50和XML技术的数字图书馆分布系统构建

以Z39．50和XML技术为基点，着意构建网络环境下数字图书馆的分布体系结构模型，阐明如何以Z39．50为中间件进行文献数据库之间的通信，并结合XML发展新一代Z39．50技术，同时提出以XML为数据库结构语言，构建新的分布体系。     

具有Z2-等变性质的平面七次哈密顿向量场的相图分类（Ⅲ）

应用微分方程定性分析的方法,本文研究了一类具有Z2-等变性质的七次平面哈密顿向量场的相图,得到了一些新的相图并对参数空间进行了划分。     

Z世代高职大学生马克思主义信仰现状探析

在中国特色社会主义事业建设中,Z世代高职大学生作为一个重要的组成部分,其政治行为在一定程度上与其政治信仰状况有着密不可分的联系。因此,选择5所高职院校的在校大学生为研究对象,通过深度访谈和问卷调查的方法,对Z世代高职大学生进行抽样调查研究,发现在他们中存在对马克思主义信仰认识模糊、情感不足等问题。在新时代,在给予高职院校Z世代大学生马克思主义信仰教育时,应该彰显时代性,强调情感性,重视实践性,以此坚定Z世代高职大学生的马克思主义信仰,推动现代化强国建设。     

国外文献传递理论研究进展：2000-2008

主要选取Interlending &; Document Supply 2000-2008年间发表的文献传递方面的论文进行归纳分析,以反映国外图书馆文献传递领域近年的理论研究进展。国外过度严格的知识产权与数字版权管理、图书馆经费短缺及全球化服务标准缺位成为文献传递活动主要障碍;信息通信技术、web2.0技术及文献电子化与网络化技术改变文献传递的工作流程、服务平台及文献传递的市场;图书馆与其他信息机构的合作将成为图书馆文献传递服务的新模式和新内容,文献传递工作人员的职责也将随之发生变化。     

Z39.50协议及其在联合编目中的应用

随着互联网络以及图书馆自动化技术的发展,联合编目已在图书馆界得到了广泛的应用。本文正是基于联合编目的应用,详细描述了联合编目中的关键技术——Z39．50协议,包括Z39.50的发展由来、工作原理、内容机制、适用范围及在当今图书馆界的具体应用案例描述。参考文献6。     

Social trust and the growth of schooling

The paper develops a simple model to examine how social trust might affect the growth of schooling through lowering transaction costs associated with employing educated individuals. In a sample of 52 countries, the paper thereafter provides empirical evidence that trust has led to faster growth of schooling in the period 1960–2000. The findings are robust to the inclusion of a set of control variables and being estimated using an instrumental variables approach.     

A meta-analysis of the effect of education on social capital

To assess the empirical estimates of the effect of education on social trust and social participation – the basic dimensions of individual social capital – a meta-analysis is applied, synthesizing 154 evaluations on social trust, and 286 evaluations on social participation. The publication bias problem is given special emphasis in the meta-analysis. Our statistical synthesis confirms that education is a strong and robust correlate of individual social capital. The meta-analysis provides support for the existence of a relative effect of education on social participation, and of a reciprocity mechanism between the dimensions of social capital. The analysis also suggests that the erosion of social participation during the past decades has coincided with a decrease of the marginal return to education on social capital. Finally, we find differences in the return to education between genders, between US and other nations, and variations for different education attainments.     

Advancing innovation in the public sector: Aligning innovation measurement with policy goals

There is sufficient evidence, drawn from surveys of innovation in the public sector and cognitive testing interviews with public sector managers, to develop a framework for measuring public sector innovation. Although many questions that are covered in the Oslo Manual guidelines for measuring innovation in the private sector can be applied with some modifications to the public sector, public sector innovation surveys need to meet policy needs that require collecting additional types of data. Policy to support public sector innovation requires data on how public sector organizations innovate and how a strategic management approach to innovation can influence the types of innovations that are developed. Both issues require innovations surveys to delve deeply into the innovation processes and strategies that are used by public sector managers. Implementation of the measurement framework proposed in this paper would open up opportunities for a new, policy-relevant research program on public sector innovation.     

Retraction statements and research malpractice in economics

We draw on rational crime theory to help analyse 55 articles that have been retracted from 734 peer-reviewed journals in the field of economics. We highlight and discuss what these findings indicate regarding the nature and pattern of research malpractice in that discipline. Particular attention is given to exploring “no reason” retractions and the policy guidelines of publishers regarding retracted papers. We conclude that the frequent vagueness of retraction statements, and a reluctance to signal research malpractice, generally results in little damage to the reputation of caught, and known, offenders. Thus, a key deterrent to engaging in research malpractice is lacking. To reduce the incidence of research malpractice, we offer several recommendations for publishers and journal editors.