全文获取类型
收费全文 | 7494篇 |
免费 | 170篇 |
国内免费 | 71篇 |
专业分类
管理学 | 624篇 |
民族学 | 46篇 |
人才学 | 1篇 |
人口学 | 73篇 |
丛书文集 | 544篇 |
理论方法论 | 244篇 |
综合类 | 3354篇 |
社会学 | 319篇 |
统计学 | 2530篇 |
出版年
2024年 | 6篇 |
2023年 | 35篇 |
2022年 | 50篇 |
2021年 | 75篇 |
2020年 | 113篇 |
2019年 | 157篇 |
2018年 | 188篇 |
2017年 | 316篇 |
2016年 | 179篇 |
2015年 | 188篇 |
2014年 | 358篇 |
2013年 | 1223篇 |
2012年 | 485篇 |
2011年 | 424篇 |
2010年 | 342篇 |
2009年 | 374篇 |
2008年 | 382篇 |
2007年 | 409篇 |
2006年 | 355篇 |
2005年 | 405篇 |
2004年 | 327篇 |
2003年 | 289篇 |
2002年 | 215篇 |
2001年 | 217篇 |
2000年 | 163篇 |
1999年 | 87篇 |
1998年 | 63篇 |
1997年 | 52篇 |
1996年 | 44篇 |
1995年 | 27篇 |
1994年 | 17篇 |
1993年 | 25篇 |
1992年 | 32篇 |
1991年 | 17篇 |
1990年 | 13篇 |
1989年 | 12篇 |
1988年 | 9篇 |
1987年 | 6篇 |
1986年 | 5篇 |
1985年 | 8篇 |
1984年 | 2篇 |
1983年 | 12篇 |
1982年 | 9篇 |
1981年 | 3篇 |
1980年 | 5篇 |
1979年 | 4篇 |
1978年 | 4篇 |
1977年 | 1篇 |
1976年 | 1篇 |
1975年 | 2篇 |
排序方式: 共有7735条查询结果,搜索用时 15 毫秒
1.
CHIN-TSANG CHIANG MEI-CHENG WANG CHIUNG-YU HUANG 《Scandinavian Journal of Statistics》2005,32(1):77-91
Abstract. Recurrent event data are largely characterized by the rate function but smoothing techniques for estimating the rate function have never been rigorously developed or studied in statistical literature. This paper considers the moment and least squares methods for estimating the rate function from recurrent event data. With an independent censoring assumption on the recurrent event process, we study statistical properties of the proposed estimators and propose bootstrap procedures for the bandwidth selection and for the approximation of confidence intervals in the estimation of the occurrence rate function. It is identified that the moment method without resmoothing via a smaller bandwidth will produce a curve with nicks occurring at the censoring times, whereas there is no such problem with the least squares method. Furthermore, the asymptotic variance of the least squares estimator is shown to be smaller under regularity conditions. However, in the implementation of the bootstrap procedures, the moment method is computationally more efficient than the least squares method because the former approach uses condensed bootstrap data. The performance of the proposed procedures is studied through Monte Carlo simulations and an epidemiological example on intravenous drug users. 相似文献
2.
Let ( Xk ) k be a sequence of i.i.d. random variables taking values in a set , and consider the problem of estimating the law of X1 in a Bayesian framework. We prove, under mild conditions on the prior, that the sequence of posterior distributions satisfies a moderate deviation principle. 相似文献
3.
Kimmo Eriksson 《Scandinavian Journal of Statistics》2004,31(2):203-216
Abstract. This document presents a survey of the statistical and combinatorial aspects of four areas of comparative genomics: gene order based measures of evolutionary distances between species, construction of phylogenetic trees, detection of horizontal transfer of genes, and detection of ancient whole genome duplications. 相似文献
4.
翻译:意识形态的建构、解构、重建与解读 总被引:1,自引:0,他引:1
徐国柱 《湖南大学学报(社会科学版)》2008,22(2):107-112
翻译不仅是语言之间信息转换的文化活动,而且是一系列复杂的思维活动。意识形态以不同的语言形式隐藏在语篇之中,以各种隐蔽方式潜移默化地影响着作者写作、译者翻译以及读者解读文本。本文拟以批评语言学为主要方法论,强调翻译中语言分析和社会分析相结合的重要性,同时主张翻译研究应以语篇为单位,特别注意考察作者、译者、读者在翻译过程中的三元关系及其在意识形态的建构、解构、重建和解读过程中的作用,以便弄清翻译的本质并有效地解释那些"不忠"的现象。 相似文献
5.
6.
For testing the fit of the inverse Gaussian distribution with unknown parameters, the empirical distribution-function statistic A2 is studied. Two procedures are followed in constructing the test statistic; they yield the same asymptotic distribution. In the first procedure the parameters in the distribution function are directly estimated, and in the second the distribution function is estimated by its Rao-Blackwell distribution estimator. A table is given for the asymptotic critical points of A2. These are shown to depend only on the ratio of the unknown parameters. An analysis is provided of the effect of estimating the ratio to enter the table for A2. This analysis enables the proposal of the complete operating procedure, which is sustained by a Monte Carlo study. 相似文献
7.
The plant ‘Heat Rate’ (HR) is a measure of overall efficiency of a thermal power generating system. It depends on a large number of factors, some of which are non-measurable, while data relating to others are seldom available and recorded. However, coal quality (expressed in terms of ‘effective heat value’ (EHV) as kcal/kg) transpires to be one of the important factors that influences HR values and data on EHV are available in any thermal power generating system. In the present work, we propose a prediction interval of the HR values on the basis of only EHV, keeping in mind that coal quality is one of the important (but not the only) factors that have a pronounced effect on the combustion process and hence on HR. The underlying theory borrows the idea of providing simultaneous confidence interval (SCI) to the coefficients of a p-th p(≥1) order autoregressive model (AR(p)). The theory has been substantiated with the help of real life data from a power utility (after suitable base and scale transformation of the data to maintain the confidentiality of the classified document). Scope for formulating strategies to enhance the economy of a thermal power generating system has also been explored. 相似文献
8.
从MDnte Carlo模拟的实现过程入手,首先通过对Monte Carlo方法原理的阐述来介绍该种方法。进一步结合具体的实例通过计算机进行模拟来解释Monte Carlo方法的具体实现过程。重点讨论在选择合理的数据生成过程的前提下,如何在Monte Carlo方法中减少模拟方差,从而提高估计精度,更好地应用这种方法来进行经济预测。 相似文献
9.
10.
全球范围内殖民主义体系的崩溃,使现代性具有了多义性和混乱性。这证明了西方现代性本身存在着矛盾性和含混性,也说明了西方现代性的对立面——反殖民主义和现代性的效颦者——更加深了现代性本身的矛盾性和含混性,表现出对资本主义工业(或后工业)社会所设想的现代文明的质疑与抗议。 相似文献