全文获取类型
收费全文 | 3761篇 |
免费 | 86篇 |
国内免费 | 21篇 |
专业分类
管理学 | 65篇 |
劳动科学 | 1篇 |
民族学 | 43篇 |
人口学 | 26篇 |
丛书文集 | 541篇 |
理论方法论 | 127篇 |
综合类 | 2859篇 |
社会学 | 53篇 |
统计学 | 153篇 |
出版年
2024年 | 2篇 |
2023年 | 7篇 |
2022年 | 18篇 |
2021年 | 25篇 |
2020年 | 34篇 |
2019年 | 32篇 |
2018年 | 36篇 |
2017年 | 28篇 |
2016年 | 37篇 |
2015年 | 65篇 |
2014年 | 131篇 |
2013年 | 127篇 |
2012年 | 165篇 |
2011年 | 228篇 |
2010年 | 208篇 |
2009年 | 193篇 |
2008年 | 221篇 |
2007年 | 288篇 |
2006年 | 278篇 |
2005年 | 329篇 |
2004年 | 311篇 |
2003年 | 324篇 |
2002年 | 268篇 |
2001年 | 259篇 |
2000年 | 118篇 |
1999年 | 49篇 |
1998年 | 15篇 |
1997年 | 9篇 |
1996年 | 15篇 |
1995年 | 13篇 |
1994年 | 4篇 |
1993年 | 7篇 |
1992年 | 2篇 |
1991年 | 5篇 |
1990年 | 3篇 |
1989年 | 5篇 |
1988年 | 2篇 |
1987年 | 1篇 |
1985年 | 1篇 |
1983年 | 3篇 |
1981年 | 1篇 |
1979年 | 1篇 |
排序方式: 共有3868条查询结果,搜索用时 15 毫秒
81.
82.
Designing and integrating composite networks for monitoring multivariate gaussian pollution fields 总被引:2,自引:0,他引:2
J. V. Zidek W. Sun & N. D. Le 《Journal of the Royal Statistical Society. Series C, Applied statistics》2000,49(1):63-79
Networks of ambient monitoring stations are used to monitor environmental pollution fields such as those for acid rain and air pollution. Such stations provide regular measurements of pollutant concentrations. The networks are established for a variety of purposes at various times so often several stations measuring different subsets of pollutant concentrations can be found in compact geographical regions. The problem of statistically combining these disparate information sources into a single 'network' then arises. Capitalizing on the efficiencies so achieved can then lead to the secondary problem of extending this network. The subject of this paper is a set of 31 air pollution monitoring stations in southern Ontario. Each of these regularly measures a particular subset of ionic sulphate, sulphite, nitrite and ozone. However, this subset varies from station to station. For example only two stations measure all four. Some measure just one. We describe a Bayesian framework for integrating the measurements of these stations to yield a spatial predictive distribution for unmonitored sites and unmeasured concentrations at existing stations. Furthermore we show how this network can be extended by using an entropy maximization criterion. The methods assume that the multivariate response field being measured has a joint Gaussian distribution conditional on its mean and covariance function. A conjugate prior is used for these parameters, some of its hyperparameters being fitted empirically. 相似文献
83.
Paul Clist 《Development policy review : the journal of the Overseas Development Institute》2019,37(6):719-734
Payment by results is a relatively new way of giving development aid, where a recipient's performance against pre‐agreed measures determines the amount of aid they receive. Advocates for the mechanism argue it provides donors with both a ready justification for maintaining aid budgets and better results through innovation and autonomy. It has proved popular, with most bilateral aid donors having at least experimented with the mechanism and the variety of measures stretching from individual health workers being paid for each procedure, to national governments being paid for students' test scores. However, there has not been a robust assessment of whether Payment By Results (PbR) achieves its aims for greater effectiveness. I synthesize the evidence from eight projects fully or partially funded by DFID, the recognized world leader on PbR. This represents the best evidence currently available, and is critically analysed using the leading theoretical framework that breaks each agreement into its constituent parts. I find no evidence that PbR leads to fundamentally more innovation or autonomy, with the overall range of success and failure broadly similar to other aid projects. This may partly be due to the current use of Payment by Results, with no readily identifiable examples of projects that truly meet the idealized PbR designs. Advocates of PbR may thus conclude the idea is yet to be tested. I argue PbR does not deal with the fundamental constraints that donors face, and so it is unsurprising that PbR is subject to the normal pressures that affect all aid spending. 相似文献
84.
《Journal of Policy Modeling》2019,41(4):586-606
Raising employment, in particular employment among older individuals and low educated individuals, stands high on the agenda of policy makers in many OECD countries. Increased sensitivity in recent years to rising inequality has made the challenge only larger. In this paper we evaluate alternative fiscal policy scenarios to face this challenge. We construct and use an overlapping generations model for an open economy where individuals differ not only by age, but also by innate ability and human capital. The model allows us to study effects on aggregate employment, per capita income and welfare, as well as effects for specific age and ability groups. We show that well-considered fiscal policy changes can significantly improve macroeconomic productive efficiency, without increasing intergenerational or intragenerational welfare inequality. Our results strongly prefer a reduction in the labor tax rate on older workers and on all low-wage earners, financed by an overall reduction in non-employment benefits. An alternative financing option is to raise the consumption tax rate. These results are to be seen as long-run effects for economies at potential output. 相似文献
85.
夏民 《河海大学学报(哲学社会科学版)》2007,9(4):22-24
以江泽民同志为核心的第三代领导集体,首次提出了"依法治国,建设社会主义法治国家"的治国方略。准确把握江泽民同志依法治国的科学内涵,德治与法治的相互关联以及建设法治国家的主要途径等法治思想,对于全面建设社会主义小康社会和和谐社会意义深远。 相似文献
86.
杨金彪 《华北电力大学学报(社会科学版)》2006,5(1):65-69
根据共犯处罚的根据论中的修正惹起说,以及对实行行为的实质理解,在司法工作人员参与无身份者实施以司法工作人员身分作为构成要素的真正身份犯时,司法工作人员只能构成间接正犯,而不能构成教唆犯。而无身份者只能构成帮助犯,不能构成实行犯。 相似文献
87.
王育红 《河北工程大学学报(社会科学版)》2006,23(2):101-102
沉默权是刑事诉讼中,犯罪嫌疑人、被告人享有的一项自然权利,是无罪推定原则的延伸。西方大多数国家在刑事诉讼中采取了沉默权制度,中国目前尚未有关于沉默权的明确规定。我国应借鉴国外的经验,加强立法确立沉默权制度,以完善我国刑事司法制度。 相似文献
88.
郑至吾 《湖北民族学院学报(哲学社会科学版)》2006,24(3):143-145,151
依法治国是一项伟大的社会系统工程,依法治理是依法治国的具体化。本文结合西部少数民族地区依法治理工作机构的实际情况,提出应当将工作机构实体化、工作职责法定化、工作程序规范化、法律责任完备化,才能真正促进依法治理工作的进一步发展。 相似文献
89.
大学生素质教育项目化管理体系的构建 总被引:2,自引:0,他引:2
项目化管理本是工程学、管理学中的一个重要概念,被引入高校学生素质拓展中,既可以使校内外的人力、物力、信息、资金等多方面资源达到最优化配置,也可以激发学生的积极性和创造性,提高学生参与校园文化建设的效率和质量,为高校学生素质拓展和校园文化建设提供了一个具有重要意义的体制模式. 相似文献
90.
韦静 《合肥工业大学学报(社会科学版)》2006,20(3):185-188
文章着重探讨了电视成就报道的创新方法,在理念上提出以个性化的受众为中心、结合电视传播特点、贴近工作实际;具体方法上则提出以四个方面为突破口,即:通过个人化的视角,贴近生活;用理性思维诠释热点;用情节化的叙述,加深人们的理解;调动多种电视表现手段,增强视觉冲击力. 相似文献