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   1704篇
  免费   56篇
  国内免费   17篇
管理学   343篇
民族学   14篇
人口学   32篇
丛书文集   100篇
理论方法论   90篇
综合类   715篇
社会学   297篇
统计学   186篇
  2024年   3篇
  2023年   19篇
  2022年   9篇
  2021年   17篇
  2020年   35篇
  2019年   48篇
  2018年   39篇
  2017年   62篇
  2016年   35篇
  2015年   48篇
  2014年   75篇
  2013年   261篇
  2012年   84篇
  2011年   91篇
  2010年   79篇
  2009年   69篇
  2008年   69篇
  2007年   74篇
  2006年   81篇
  2005年   72篇
  2004年   71篇
  2003年   67篇
  2002年   61篇
  2001年   57篇
  2000年   48篇
  1999年   25篇
  1998年   19篇
  1997年   14篇
  1996年   17篇
  1995年   26篇
  1994年   13篇
  1993年   16篇
  1992年   16篇
  1991年   6篇
  1990年   4篇
  1989年   11篇
  1988年   11篇
  1987年   10篇
  1986年   5篇
  1985年   4篇
  1984年   4篇
  1982年   1篇
  1981年   1篇
排序方式: 共有1777条查询结果,搜索用时 234 毫秒
101.
Abstract

This article traces the history of one community's efforts to coordinate services to address family violence. The current mazeof organizations in communities is overwhelming to the professionals who work in them, the political leaders who authorize them, the foundations and United Ways who fund them, and, most assuredly, to the persons for whom the various organizations were established. A review of the literature on coordination and collaboration is included as well as a discussion of leadership challenges during the various stages in the evolutionary process to provide confidential, culturally sensitive, comprehensive, accountable, and user-friendly community social service systems.  相似文献   
102.
Abstract

There is no doubt that knowledge management is now a very dominant theme in modern enterprises. To survive and compete in a knowledge-based economy, companies must learn to manage and sustain their intellectual assets. As a number of practitioners have noted, human resources play an important role in the transition process to the knowledge-based economy. This transition process is characterized by participant-driven integrative teamwork for dealing with various tasks and issues in organizations. This article presents a case study of the development of human resources in the context of knowledge management, which is based on systems thinking, exploring the process of problematization. It is based on a Foucauldian approach to expose the social relationship of power, knowledge and subjectivization in the problem-solving practice.  相似文献   
103.
Fei Xu 《Serials Review》2013,39(4):235-241
Abstract

During 2009, the Hilton M. Briggs Library, South Dakota State University, went live with MetaLib, a federated search engine from Ex Libris. This paper presents the implementation process, addresses resource accessibility issues, and suggests a number of resources that can be consulted about these issues. Readers can apply similar strategies to projects involving federated search systems, as many implementation projects involve the same basic considerations presented here. The author did not find any studies specifically focused on configurations of MetaLib resources, so this content should be singularly useful.  相似文献   
104.
ABSTRACT

In this paper we study the classification of the generalized mixtures of two or three exponential distributions, in the ILR and DLR classes, and consequently in the IFR and DFR classes. We apply these results to classify the aging of the series and parallel systems, in accord with some common bivariate exponential models of their components.  相似文献   
105.
106.
Data from two Maryland AFDC quality control samples (n=2376) are joined with data from two surveys of local administrative practices to examine administrative correlates of error. Less error exists among cases processed by agencies that: 1) use checklists to simplify agency procedures, 2) use follow-up controls in conjunction with tickler files, 3) have in-house training to deal with earned income procedures, 4) provide training on reducing earned income errors, and 5) have less staff turnover. Surprisingly, the findings show client error to be more influenced by administrative practices than agency error, suggesting the distinction between the two may be misleading.  相似文献   
107.
Large initial investment in advanced manufacturing systems (AMS) makes it imperative to develop economic justification methods. Once the new system has been properly justified, a critical issue facing the firm is the optimal timing of the installation in an industry. In this paper we use a game-theoretic model by which the optimal timing of the investments in AMSs is analysed. The existence of timing equilibria is demonstrated and simple decision rules of optimal strategy are provided. Economic interpretations of the decision rules are subsequently made clear. Finally, illustrative examples are used to demonstrate the correctness and usefulness of the analysis.  相似文献   
108.
为增强安全关键系统的高可信能力,在分析高可信保障机制现状的基础上,提出了一种多层次的高可信软件架构。该架构采用时空分离思想、虚拟机技术,为基于MLS的嵌入式安全关键系统提供了一种整体解决方案。基于该架构,研究了多层次的安全和防危策略管理方法、信息流控制机制、可信软件的评估和认证方法,为安全关键嵌入式系统提供可认证的安全服务。  相似文献   
109.
Fire Risks in Oil Refineries: Economic Analysis of Camera Monitoring   总被引:1,自引:0,他引:1  
A probabilistic method is presented to evaluate the economic value of fire monitoring by closed circuit TV camera in petroleum refineries. The proposed model is restricted to the analysis of risk reduction in an area where fires can be caused either by pump failure or by failure of valves and lines. The benefits come from reducing the time during which the fire grows undetected. Fire growth and expected values of losses are analyzed by a Markov model that includes five phases: (1) active undetected growth, (2) detection, (3) fire growth at the beginning of the firemen's intervention, (4) fire control, and (5) fire extinction. The results (e.g., the expected net present value of the investment) show that the proposed monitoring investment is attractive for an illustrative example.  相似文献   
110.
智能体建模和资本市场复杂性   总被引:3,自引:0,他引:3       下载免费PDF全文
以复杂适应系统的思想和智能体建模的方法研究资本市场复杂性是新兴的有价值的研究领域,阐述了资本市场作为复杂适应系统的动力机制,介绍了这一领域一个重要模型———少数派博弈(minority game,MG)模型.仿真发现,处于拥挤阶段的MG具有和实际市场相近的收益率分布.进一步扩展标准MG,提出了快速适应的少数派博弈模型,仿真结果显示,新的模型有着和真实市场相同的特征:收益率分布的尖峰和肥尾现象,揭示了资本市场复杂性的内部动力学机理.  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