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   1447篇
  免费   49篇
  国内免费   12篇
管理学   102篇
民族学   4篇
人口学   9篇
丛书文集   73篇
理论方法论   21篇
综合类   695篇
社会学   5篇
统计学   599篇
  2024年   3篇
  2023年   9篇
  2022年   13篇
  2021年   13篇
  2020年   23篇
  2019年   33篇
  2018年   39篇
  2017年   68篇
  2016年   42篇
  2015年   39篇
  2014年   61篇
  2013年   225篇
  2012年   106篇
  2011年   78篇
  2010年   73篇
  2009年   65篇
  2008年   70篇
  2007年   88篇
  2006年   76篇
  2005年   62篇
  2004年   58篇
  2003年   54篇
  2002年   47篇
  2001年   39篇
  2000年   37篇
  1999年   15篇
  1998年   12篇
  1997年   12篇
  1996年   8篇
  1995年   9篇
  1994年   5篇
  1993年   8篇
  1992年   3篇
  1991年   3篇
  1990年   5篇
  1988年   2篇
  1985年   1篇
  1984年   1篇
  1982年   1篇
  1977年   1篇
  1975年   1篇
排序方式: 共有1508条查询结果,搜索用时 15 毫秒
101.
论孔子的仁礼合一说   总被引:2,自引:0,他引:2  
仁与礼是孔子学说的两个基本范畴,仁礼关系是孔子学说的基本关系.在传统礼乐文化中发现仁,复引仁入礼,以礼释仁,赋予礼乐文化以真实意义与内在价值是孔子对中国文化的巨大贡献.孔子在中国文化史上创建了以仁为本源,以礼为表征,仁礼合一的思想系统.在这一思想系统中,礼是孔子对传统的继承,仁是孔子的创辟;仁是内在原则,礼是外在规范;仁是绝对的,礼是相对的;仁是常道,礼是变道.从纵向上讲,孔子的仁礼合一是继承与创新的合一;从横向上说,仁礼合一是内在原则与外在表现形式的合一.宋明儒者视礼为理,乾嘉学者以礼代理,都使礼由相对变为绝对,从而使礼由陶冶人性情的缘饰品变而为束缚人性正常发展的桎梏.据仁以成礼,非设礼以限仁,是孔子开出的儒学发展的正途.  相似文献   
102.
The Kulback-Leibler information has been considered for establishing goodness-of-fit test statistics, which have been shown to perform very well (Arizono & Ohta, 1989; Ebrahimi et al., 1992, etc). In this paper, we propose censored Kullback-Leibler information to generalize the discussion of the Kullback-Leibler information to the censored case. Then we establish a goodness-of-fit test statistic based on the censored Kullback-Leibler information with the type 2 censored data, and compare the test statistics with some existing test statistics for the exponential and normal distributions.  相似文献   
103.
Necessary and sufficient conditions for a linear estimator to dominate another linear estimator of a location parameter under the Pitman's criterion of comparison are discussed. Consequently it is demonstrated that a linear biased estimator can not dominate a linear unbiased estimator under Pitman's criterion and that the sample mean is the Closest Linear Unbiased Estimator (CLUE). It is also shown that the ridge regression estimator with a known biasing constant can not dominate the ordinary least squares estimator. If an estimator δdominates an estimator δin the average loss sense then sufficient conditions are obtained under which δis also preferred over δunder Pitman's criterion. Further we obtain sufficient conditions under which preference under the Pitman's criterion will lead to preference under the mean squared error sense.  相似文献   
104.
We demonstrate a multidimensional approach for combining several indicators of well-being, including the traditional money-income indicators. This methodology avoids the difficult and much criticized task of computing imputed incomes for such indicators as net worth and schooling. Inequality in the proposed composite measures is computed using relative inequality indexes that permit simple analysis of both the contribution of each welfare indicator (and its factor components) and within and between components of total inequality when the population is grouped by income levels, age, gender, or any other criteria. The analysis is performed on U.S. data using the Michigan Survey of Income Dynamics.  相似文献   
105.
In analogy with the cumulative residual entropy recently proposed by Wang et al. [2003a. A new and robust information theoretic measure and its application to image alignment. In: Information Processing in Medical Imaging. Lecture Notes in Computer Science, vol. 2732, Springer, Heidelberg, pp. 388–400; 2003b. Cumulative residual entropy, a new measure of information and its application to image alignment. In: Proceedings on the Ninth IEEE International Conference on Computer Vision (ICCV’03), vol. 1, IEEE Computer Society Press, Silver Spring, MD, pp. 548–553], we introduce and study the cumulative entropy, which is a new measure of information alternative to the classical differential entropy. We show that the cumulative entropy of a random lifetime X can be expressed as the expectation of its mean inactivity time evaluated at X. Hence, our measure is particularly suitable to describe the information in problems related to ageing properties of reliability theory based on the past and on the inactivity times. Our results include various bounds to the cumulative entropy, its connection to the proportional reversed hazards model, and the study of its dynamic version that is shown to be increasing if the mean inactivity time is increasing. The empirical cumulative entropy is finally proposed to estimate the new information measure.  相似文献   
106.
This paper examines the choice of critical values for testing both non-sequential and nested sequential sets of constraints in the standard linear regression model. Modest increases in (e.g.) t-ratio critical values relative to their one-off values are often sufficient to maintain proper size. A Bayesian decision-theoretic approach, highlighted by the Schwarz (1978) criterion, provides a framework for deriving consistency and asymptotic local power properties of both forms of testing (data mining) algorithms.  相似文献   
107.
避开求解波动方程的困难,利用量子统计的方法,直接计算轴对称Taub-NUT黑洞背景下玻色场和费米场的配分函数.然后利用改进的砖墙方法——膜模型,计算黑洞背景下的玻色场和费米场的熵.计算表明,黑洞的熵与视界面积成正比的结论只有在薄膜的厚度远小于截断因子或两者为同阶无穷小时成立,当无穷小薄膜的厚度远大于无穷小截断因子时,黑洞的熵有一个对数发散项,黑洞熵不再与视界面积成正比.  相似文献   
108.
This paper considers decision problems where: (1) The exact probability distribution over the states of nature is not precisely known, but certain prior information is available about the possibilities of these outcomes; (2) A prior distribution over the states of nature is known, but new constraint information about the probabilities becomes available. The maximum entropy principle asserts that the probability distribution with maximum entropy, satisfying the prior knowledge, should be used in the decision problem. The minimum cross-entropy principle says that the posterior distribution is the one which minimizes cross-entropy, subject to the new constraint information. The entropy principles have not gone uncriticized, and this literature, together with that justifying the principles, is surveyed. Both principles are illustrated in a number of situations where the distribution is either discrete or continuous. The discrete distribution case with prior interval estimates based on expert opinions is considered in detail.  相似文献   
109.
研究了AlN基片上重掺杂硼的多晶硅膜电阻率温度特性。实验发现,膜电阻率随温度变化呈现出从NTC过渡到PTC的U型特性,转折温度TM的位置依赖工艺条件的变化。理论分析表明:晶界势垒使膜电阻率在温度变化上存在一个极小值,极小值对应的转折温度正比于晶界势垒。  相似文献   
110.
顺应新课程标准的要求,数学思维能力的培养必须在遵循概念、判断、推理等一般规律的基础上,着力改进数学教学评价方式,努力将数学课堂还原为学堂,将数学教学延伸到课外、校外,引领学生在生动的数学学习中生成数学思维能力.  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