首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   131篇
  免费   2篇
管理学   29篇
人口学   12篇
理论方法论   15篇
综合类   6篇
社会学   46篇
统计学   25篇
  2023年   1篇
  2022年   4篇
  2021年   2篇
  2020年   3篇
  2019年   4篇
  2018年   8篇
  2017年   5篇
  2016年   11篇
  2015年   8篇
  2014年   5篇
  2013年   14篇
  2012年   5篇
  2011年   5篇
  2010年   12篇
  2009年   2篇
  2008年   6篇
  2007年   3篇
  2006年   7篇
  2005年   5篇
  2004年   4篇
  2003年   6篇
  2002年   2篇
  2001年   1篇
  1999年   2篇
  1998年   1篇
  1997年   1篇
  1996年   1篇
  1995年   1篇
  1989年   1篇
  1987年   1篇
  1982年   1篇
  1974年   1篇
排序方式: 共有133条查询结果,搜索用时 9 毫秒
41.
In recent years, European countries have witnessed a number of food crises such as dioxin-contaminated chicken, foot-and-mouth disease, and BSE. In such cases, food might be contaminated by microorganisms or chemicals that could pose a risk to the consumer. These cases attract media attention and might instigate the consumer to reduce the consumption of the allegedly contaminated products. Although a decline in consumption of (potentially) contaminated products has been observed, it is not yet clear what determines the individual's reaction to food risk messages. To study the psychological determinants of the reaction to food risk messages, a survey was conducted in the Netherlands (n= 280). Subjects had to imagine two situations involving chicken contamination and report how they would react behaviorally if this situation occurred. Risk perception, affective response, perceived susceptibility to foodborne disease, self-efficacy, outcome expectation, trust, experience with foodborne disease, and need for information were also assessed. It was found that 60% of the subjects would allegedly avoid the risks by not consuming chicken for a while and approximately 60% would seek additional information. Risk avoidance was significantly related to information seeking and the psychological determinants, especially risk perception, affective response, need for information, perceived susceptibility to foodborne disease, and trust. Seeking information was also significantly related to risk perception, affective response, need for information, susceptibility to foodborne disease, and trust, but to a lesser degree. A model describing the relationships between the variables was tested using AMOS. Results are presented and implications are discussed.  相似文献   
42.
The paper argues that the current emerging international development policies of the Visegrád (V4) countries are heavily influenced by the certain aspects of the Communist past and the transition process. Due to these influences, the V4 countries have difficulties in adapting the foreign aid practices of Western donors and this leads to the emergence of a unique Central and Eastern European development cooperation model. As an analytical background, the paper builds on the path dependency theory of transition. A certain degree of path dependence is clearly visible in V4 foreign aid policies, and the paper analyses some aspects of this phenomenon: how these new emerging foreign aid donors select their partner countries, how much they spend on aid, how they formulate their aid delivery policies and institutions and what role the non-state actors play. The main conclusions of the paper are that the legacies of the Communist past have a clear influence and the V4 countries still have a long way to go in adapting their aid policies to international requirements.
András TétényiEmail:
  相似文献   
43.
This article deals with the general form of the hat matrix and the DFBETA measure to detect the influential observations and the leverages in the linear regression model with more than one regressor when the errors are from AR(1) and AR(2) processes. Previous studies dealing with the influential observations and the leverages in the constant mean model and regression through the origin model are obtained as special cases. To demonstrate the utility of the hat matrix and the DFBETA measure, two numerical examples based on the ice cream consumption data with AR(1) errors and the Fox-Hartnagel data with AR(2) errors are analyzed. The results show that the parameter of the autoregressive process affects the influential and leverage points.  相似文献   
44.
以博雅传统为根基的博雅教育,与通识教育和素质教育相比较,更注重知识的学习对于心智自身的启迪与扩大所能产生的作用。结合国内外高校博雅教育形势和高校专业课程设置,进行对比分析和国内高校未来博雅教育的必要性分析,认为我国高校应建立基于博雅理念的教育体制、有中国传统的博雅教育内容设计等要素为主体的博雅教育体系。  相似文献   
45.
Spontaneous and organized population movements have long been used as a means of promoting a country's goals of development and national integration. At the local level, on the other hand, these movements have frequently done the opposite, fueling local grievances, sharpening group distinctions, and at times creating ‘sons-of-the-soil’ conflicts. In this paper, I explore this apparent tension between the national political rationale for internal migration and the political impact such migration has had locally, in four minority regions of China and Indonesia. I argue that the specific manner in which migration affects local politics is influenced by a country's political regime. In Indonesia, the impact of migration is observed in electoral politics, where ‘politics of place’ have been allowed to emerge. In China, it is perceived in the curbing of national minorities’ territorial autonomy. The role played by local elites and group competition between indigenous people and migrants are also reviewed.  相似文献   
46.
We study methods to estimate regression and variance parameters for over-dispersed and correlated count data from highly stratified surveys. Our application involves counts of fish catches from stratified research surveys and we propose a novel model in fisheries science to address changes in survey protocols. A challenge with this model is the large number of nuisance parameters which leads to computational issues and biased statistical inferences. We use a computationally efficient profile generalized estimating equation method and compare it to marginal maximum likelihood (MLE) and restricted MLE (REML) methods. We use REML to address bias and inaccurate confidence intervals because of many nuisance parameters. The marginal MLE and REML approaches involve intractable integrals and we used a new R package that is designed for estimating complex nonlinear models that may include random effects. We conclude from simulation analyses that the REML method provides more reliable statistical inferences among the three methods we investigated.  相似文献   
47.
Public Organization Review - COVID-19 has demonstrated the importance of data for scientific policy advice. Mechanisms by which data is generated, shared, and ultimately lead to policy responses...  相似文献   
48.
49.
上个世纪之交,一种新的文化现象出现在中国东部沿海城市——即中文的现代西式百科全书问世。这些新式教育工具以简洁的语言为现代社会文化中的众多问题提供了简明而有序的信息,其创新意义,远非彼时中国所使用的“工具书”一词所能概括。本文考察了黄摩西1911年出版的《普通百科新大辞典》,它被视为1903-1911年间中国出版的同类著作中最先进的一部。我们特别关注这部著作之成为“现代”工具书的那些特征,以此勾勒出这部辞书的现代的、世界主义的特质,同时也展示出学者黄摩西的学术成就;并从一个特定角度,呈现已成为晚清社会风格标志的西学东渐的过程。  相似文献   
50.
Nowadays, reverse logistics is gaining importance for many companies in different industries. This importance is rooted in the fact that it generates profit and decreases the environmental impacts of products. Even though the decrease of environmental impacts is an indispensable requisite, reverse logistics design is only driven by cost indicators. The main reason behind this high cost is access to environmental information is difficult and is directly linked to data all along the lifecycle of the product. This paper presents a method by which reverse logistics design integrates environmental impacts based on the management of closed-loop product lifecycle. This method is divided into two processes: from beginning of life to end of life and from end of life to beginning of life. The first process integrates product data in order to calculate environmental impacts of the potential reverse logistics networks, whereas the second process selects the most appropriate reverse logistics network before optimising the product based on this particular network. The proposition is illustrated by a case study on a recycled aluminium automotive part.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号