全文获取类型
收费全文 | 23627篇 |
免费 | 474篇 |
国内免费 | 88篇 |
专业分类
管理学 | 2090篇 |
劳动科学 | 36篇 |
民族学 | 514篇 |
人才学 | 9篇 |
人口学 | 2608篇 |
丛书文集 | 3760篇 |
理论方法论 | 1189篇 |
综合类 | 6673篇 |
社会学 | 5244篇 |
统计学 | 2066篇 |
出版年
2024年 | 7篇 |
2023年 | 48篇 |
2022年 | 196篇 |
2021年 | 210篇 |
2020年 | 202篇 |
2019年 | 131篇 |
2018年 | 1831篇 |
2017年 | 1938篇 |
2016年 | 1268篇 |
2015年 | 406篇 |
2014年 | 529篇 |
2013年 | 737篇 |
2012年 | 998篇 |
2011年 | 2053篇 |
2010年 | 2053篇 |
2009年 | 1854篇 |
2008年 | 1761篇 |
2007年 | 2119篇 |
2006年 | 1098篇 |
2005年 | 1154篇 |
2004年 | 721篇 |
2003年 | 589篇 |
2002年 | 505篇 |
2001年 | 397篇 |
2000年 | 246篇 |
1999年 | 232篇 |
1998年 | 112篇 |
1997年 | 128篇 |
1996年 | 172篇 |
1995年 | 100篇 |
1994年 | 81篇 |
1993年 | 67篇 |
1992年 | 57篇 |
1991年 | 56篇 |
1990年 | 30篇 |
1989年 | 26篇 |
1988年 | 35篇 |
1987年 | 6篇 |
1986年 | 12篇 |
1985年 | 5篇 |
1984年 | 3篇 |
1983年 | 2篇 |
1982年 | 4篇 |
1981年 | 4篇 |
1980年 | 1篇 |
1976年 | 1篇 |
1974年 | 1篇 |
1972年 | 1篇 |
1971年 | 1篇 |
1967年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
52.
白兰 《辽宁工程技术大学学报(社会科学版)》2003,5(3):102-103
在科学技术迅猛发展的今天,创新尤为重要。教育是培养创新精神和创新人才的重要摇篮,为此我们必须更新教育观念、摒弃旧的传统教学模式,开展创新教育,培养学生的创造性思维能力、获胜知识的能力,及进行个性化教育,使学生具有更强的自信心、独立的独特的思维方式,使其探求问题有更多的兴趣和毅力。积极开展创新活动,使学生在创新活动中拓宽自己的知识面,在实践中脚踏实地提高自己的各种能力,打破对创新的神秘感,树立创新信念。 相似文献
53.
Gayane Novikova 《Transition Studies Review》2004,11(3):213-223
The collapse of the USSR was accompanied by transformation of the South Caucasian latent ethnopolitical conflicts into local wars. Today the situation in the area of the conflicts is “neither war, nor peace”. Three unresolved conflicts of the South Caucasus can be considered as one of the most serious obstacles for establishing a regional security system.The article gives the general characteristics of these conflicts, the trends of their development, taking into account the time factor, and analyzes the behavioral models of the main players – de jure recognized and unrecognized de facto states of the South Caucasus. The basic objective of the main players should be to keep the situation on a level preventing the resumption of the armed conflicts. The attempts of forced resolution of the conflicts are fraught with destabilization of the situation not only in the area of any of these conflicts but in the whole region. 相似文献
54.
多平台CAI课件的开发技术 总被引:1,自引:0,他引:1
简要介绍了多媒体CAI课件的开发工具,阐述了基于多平台开发CAI课件的方法,针对微机测控技术、现代仪表技术、电工技术等不同的授课内容,选择不同的CAI开发平台,文章介绍了POWERPOINT中嵌入PSPICE仿真工具、用FLASH进行课堂演示实验的经验,并以POWERPOINT为例,说明了多平台开发CAI课件的具体应用. 相似文献
55.
Lu Lin 《Statistical Papers》2004,45(4):529-544
The quasi-score function, as defined by Wedderburn (1974) and McCullagh (1983) and so on, is a linear function of observations.
The generalized quasi-score function introduced in this paper is a linear function of some unbiased basis functions, where
the unbiased basis functions may be some linear functions of the observations or not, and can be easily constructed by the
meaning of the parameters such as mean and median and so on. The generalized quasi-likelihood estimate obtained by such a
generalized quasi-score function is consistent and has an asymptotically normal distribution. As a result, the optimum generalized
quasi-score is obtained and a method to construct the optimum unbiased basis function is introduced. In order to construct
the potential function, a conservative generalized estimating function is defined. By conservative, a potential function for
the projected score has many properties of a log-likelihood function. Finally, some examples are given to illustrate the theoretical
results.
This paper is supported by NNSF project (10371059) of China and Youth Teacher Foundation of Nankai University. 相似文献
56.
Starting with its early twentieth century origins, the development of Labor Economics is traced to the present. We describe
an intellectual revolution in which an earlier tra-dition that focused primarily on the institution of the labor union has
been replaced by a perspective that emphasizes the various roles played by labor markets in an eco-nomic system. That earlier
tradition contained very significant ideological elements, whereas its successor deals much more with the world of ideas.
In the course of the debate, which still continues, ideas triumphed over ideology and created modern Labor Economics. 相似文献
57.
58.
We show that Bayesian ex post aggregation is unstable with respect to refinements. Suppose a group of Bayesians use ex post
aggregation. Since it is a joint problem, each agent's problem is captured by the same model, but probabilities and utilities
may vary. If they analyze the same situation in more detail, their refined analysis should preserve their preferences among
acts. However, ex post aggregation could bring about a preference reversal on the group level. Ex post aggregation thus depends
on how much information is used and may keep oscillating (“flipping”) as one keeps adding more information.
Received: 16 April 2002/Accepted: 27 May 2002 相似文献
59.
Koji Takamiya 《Social Choice and Welfare》2003,20(1):77-83
In a general model of indivisible good allocation, S?nmez (1999) established that, whenever the core is nonempty for each
preference profile, if an allocation rule is strategy-proof, individually rational and Pareto optimal, then the rule is a
selection from the core correspondence, and the core correspondence must be essentially single-valued. This paper studies
the converse claim of this result. I demonstrate that whenever the preference domain satisfies a certain condition of `richness',
if the core correspondence is essentially single-valued, then any selection from the core correspondence is strategy-proof
(even weakly coalition strategy-proof, in fact). In particular, on the domain of preferences in which each individual has
strict preferences over his own assignments and there is no consumption externality, such an allocation rule is coalition
strategy-proof. And on this domain, coalition strategy-proofness is equivalent to Maskin monotonicity, an important property
in implementation theory.
Received: 22 February 2000/Accepted: 22 January 2002
I am grateful to Ryo-ichi Nagahisa, Shinji Ohseto, Hiroshi Ono, Tomoichi Shinotsuka and Shigehiro Serizawa for valuable comments.
And I am indebted to two anonymous referees for useful suggestions. Especially, I owe the present proof of Lemma 2 to one
referee. I also thank Yukihiko Funaki, Atsushi Kajii, Mamoru Kaneko, Eiichi Miyagawa, Tatsuyoshi Saijo, Manimay Sengupta,
Yves Sprumont, Yoshikatsu Tatamitani, Manabu Toda, Takashi Ui, Takehiko Yamato, Naoki Yoshihara and the participants of the
seminars in Hokkaido University, Kansai University, ISER (Osaka University), Otaru University of Commerce and Tsukuba University.
All errors are my own responsiblity. 相似文献
60.
本文论述在万能工具显微镜上测量渐开圆柱齿轮截面整体误差的测量原理、测量方法和数据处理过程,并给出了测量实例。 相似文献