全文获取类型
收费全文 | 15093篇 |
免费 | 202篇 |
国内免费 | 58篇 |
专业分类
管理学 | 1701篇 |
劳动科学 | 26篇 |
民族学 | 216篇 |
人才学 | 1篇 |
人口学 | 2466篇 |
丛书文集 | 1076篇 |
理论方法论 | 693篇 |
综合类 | 3096篇 |
社会学 | 4630篇 |
统计学 | 1448篇 |
出版年
2024年 | 6篇 |
2023年 | 20篇 |
2022年 | 69篇 |
2021年 | 75篇 |
2020年 | 49篇 |
2019年 | 61篇 |
2018年 | 1715篇 |
2017年 | 1730篇 |
2016年 | 1151篇 |
2015年 | 176篇 |
2014年 | 200篇 |
2013年 | 273篇 |
2012年 | 588篇 |
2011年 | 1454篇 |
2010年 | 1345篇 |
2009年 | 1188篇 |
2008年 | 1184篇 |
2007年 | 1370篇 |
2006年 | 417篇 |
2005年 | 528篇 |
2004年 | 459篇 |
2003年 | 397篇 |
2002年 | 296篇 |
2001年 | 160篇 |
2000年 | 108篇 |
1999年 | 61篇 |
1998年 | 26篇 |
1997年 | 38篇 |
1996年 | 67篇 |
1995年 | 25篇 |
1994年 | 26篇 |
1993年 | 13篇 |
1992年 | 20篇 |
1991年 | 14篇 |
1990年 | 12篇 |
1989年 | 9篇 |
1988年 | 13篇 |
1987年 | 6篇 |
1986年 | 2篇 |
1985年 | 1篇 |
1983年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
61.
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
62.
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
63.
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been replaced by a perspective that emphasizes the various roles played by labor markets in an eco-nomic system.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
64.
65.
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
66.
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
67.
研究了以扩充Jacobi多项式(1+x)Vn(x)的零点为基点的Lagrange插值多项式Ln(f,x)逼近/k)的一些问题. 相似文献
68.
69.
供应链管理模式下的企业外包设计研究 总被引:3,自引:0,他引:3
供应链管理是近年来在国内外逐渐受到重视的一种新的管理理念与模式,其管理思想是使企业将主要精力放在核心业务上,充分发挥优势,企业中的非核心业务外包给合作企业来完成。因此,企业外包设计成为供应链管理思想的一个重要方面。基于这一背景,首先探讨了企业外包的含义及其构成元素;并根据威廉姆森的新制度经济学中经济业务交易的规制结构对企业外包的规制层次进行划分;最后,构建了在供应链管理模式下基于交易成本和核心竞争力相结合的企业外包设计模型。 相似文献
70.