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71.
72.
目的是了解中国未婚青少年性与生殖健康的知识、态度和行为现状,评价青少年性与生殖健康服务的可得性与可及性,为改善青少年的性与生殖健康可及性提供政策支持。利用分层和概率比例规模抽样相结合的四阶段混合的抽样方法,用结构化问卷对15-24岁未婚青少年的三类子总体进行匿名一对一面访式调查。青少年整体缺乏全面正确的生殖健康知识,22.4%的青少年具有性经历。首次和最近一次性行为中,未采取任何避孕措施的比例分别为51.2%和21.4%。在有性经历的女性青少年中,怀孕率为21.3%,多次怀孕率为4.9%。书/杂志、同学/朋友、学校老师、网络以及电影/电视是青少年生殖健康知识的五大来源。学校课程对青少年的性与生殖健康知识具有积极作用,但青少年参加相关课程/讲座的比例不足40%。50%以上的咨询和治疗需求未实现。分析了原因,提出了对策和建议。 相似文献
73.
This article investigates the duration-dependent feature of five Pacific Rim economies. The duration-dependent Markov Switching model is employed to achieve this objective. The Savage–Dickey density ratio is also computed in support of the duration-dependent Markov switching model. The possible bull and bear market dates for each stock market are also identified by the posterior probability from the empirical model. It is unambiguous that Japan, South Korea and Hong Kong are all characterized by duration-dependence in a bear market but no duration-dependence in a bull market. In the case of Taiwan and Singapore, the duration-dependence feature holds for both the bear and bull markets. 相似文献
74.
L. Martin 《Applied economics》2013,45(6):623-638
Several studies of innovative work practices show a positive link with firm performance and employees’ task involvement, organizational commitment and citizenship behaviours. One of the recent changes faced by firms is the introduction of Information and Communication Technologies (ICTs). Although several empirical studies analyse the links between ICT use, innovative work practices and firm performance, employee-level analyses are scarce. Using data from the European Working Condition Survey (EWCS), this article investigates the relationships between use of the Internet and computers and positive attitudes among employees (social support, job satisfaction, extra effort) in the European context. Our empirical results are based on data for more than 9500 employees from 16 European countries in 2005, and more than 14 000 in 2010. Among the different effects of ICT use, based on the results for the 2005, 2010 and the pooled 2005–2010 sample, and in a within-cohorts change analysis, we find that Internet use is positively related to employees’ job satisfaction and extra effort. We find that computer use is not related to employees’ behaviours. We find also that most of the innovative work practices considered are positively related to employees’ positive attitudes. 相似文献
75.
This article investigates the impact of social capital and institutions on innovation outcome in Russian regions in 1997–2011. The novelty of the article also lies in the use of two metrics of innovation: the number of new technologies developed and patents filed. The findings provide strong support for the argument that social capital (proxied by social tension) and institutions (proxied by institutional potential) influence innovation activity. Furthermore, different types of innovation outcome are affected differently: the effect of social tension on technology development is significantly negative but insignificant with patenting, while institutional potential affects patenting negatively but its effect on technology development is insignificant. 相似文献
76.
Tracking emerging technologies in energy research: Toward a roadmap for sustainable energy 总被引:1,自引:0,他引:1
Yuya Kajikawa Author Vitae Junta Yoshikawa Author VitaeAuthor Vitae Katsumori Matsushima Author Vitae 《Technological Forecasting and Social Change》2008,75(6):771-782
Science and technology for renewable and sustainable energy are indispensable for our future society and economics. To meet the goal of sustainable energy development, there is a growing body of research efforts world wide. The planner of energy research has to grasp the broader coverage of scientific and technological research, and make decisions on effective investment in promising and emerging technologies especially under circumstances of limited resources. In this paper, we track emerging research domains in energy research by using citation network analysis. Our analysis confirms that the fuel cell and solar cell are rapidly growing domains in energy research. We further investigate the detailed structure of these two domains by clustering publications in these domains. Each citation cluster has characteristic research topics, and there is a variety of growth trends among the clusters. By using citation network analysis, we can track emerging research domains among a pile of publications efficiently and effectively. 相似文献
77.
ABSTRACTThis paper reviews the literature on tourism destination competitiveness from different aspects, focusing on comparative and competitive advantages. Also, the paper highlights the importance of information and communication technologies (ICTs) in tourism destinations and their increasing impact on the achievement of destination competitiveness. Thanks to the wider application of ICTs in tourism, tourists nowadays are well informed and have access to global market which creates a new dynamic environment by creating a smart demand. Since smartness emphasizes on ICT-based tools, including smartness integration for value co-creation, it can increase and enhance destination competitiveness. In this regard, special emphasis is placed on exploring the core components of smartness and smart tourism destination. 相似文献
78.
社区是实现育龄群众普遍享有基本生殖保健服务的阵地和依托。以上海市曹杨街道为例 ,从工作实践和理论探索出发 ,制定男性生殖健康社区工作规划 ,实证分析社区男性生殖健康教育与咨询服务的途径 ,探讨转轨时期传统性别角色、性别结构蜕变后的计划生育工作新格局。 相似文献
79.
Andreas Keller Author Vitae Stefan Hüsig Author Vitae 《Technological Forecasting and Social Change》2009,76(8):1044-1054
This paper analyzes the question whether web applications pose a disruptive threat to incumbents or a disruptive growth opportunity for entrants in the application software industry using a novel method for ex ante identification of disruptive innovations in the software industry. Building on the theory of disruptive innovations, network effects and existing frameworks for the ex ante identification of disruptive innovations a new method of analysis is deduced. The analysis is based on a list of criteria that indicate a disruptive innovation and trajectory maps of the technologies' performance attributes. This method is applied to study the potential disruption of Microsoft's desktop office applications by Google's web-based office applications.The chosen method of analysis indicates a small likelihood for web applications to pose a disruptive threat to Microsoft, and by extension, to incumbents in the software industry. While web applications show a potential to satisfy market demand in established performance attributes, strong network effects in existing software products should give incumbents enough time to co-opt the innovation. The case illustrates how our new method to analyze disruptive potential in the software industry ex ante can help to apply the theory of disruptive innovation better for forecasting purposes and to provide novel strategic insights for the players involved. 相似文献
80.
Chun-Yao Tseng Author Vitae 《Technological Forecasting and Social Change》2009,76(5):654-663
South Korea, Taiwan, Singapore, Hong Kong, China and India have become much larger force in the world economy. Due to the enormous contribution of the use of information and communication technologies (ICT) in economic growth, this study investigates four main issues related to technological innovation and knowledge network in ICT among six countries. First, indicators of technological innovation were evaluated and used to compare capability of technological innovation in ICT between the six countries. Secondly, differences in innovation configurations among six countries were manifested. Thirdly, relative innovation strengths of these six countries were examined in five sub-technological fields. Finally, this study consists of analyzing the interactions into knowledge network among them; moreover, this study manifests the difference of knowledge network in five sub-technological field of ICT. The empirical findings of this study, based on analysis of a patent and citation dataset comprised of all patents granted by the U.S. Patents and Trademark Office (USPTO) to assignees in six countries from 1976 to 2006, are helpful to understand the comparative development of technological innovation of ICT in six countries. 相似文献