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   7181篇
  免费   293篇
  国内免费   79篇
管理学   140篇
劳动科学   2篇
民族学   48篇
人才学   1篇
人口学   186篇
丛书文集   711篇
理论方法论   461篇
综合类   3808篇
社会学   893篇
统计学   1303篇
  2024年   9篇
  2023年   59篇
  2022年   67篇
  2021年   104篇
  2020年   150篇
  2019年   191篇
  2018年   179篇
  2017年   228篇
  2016年   177篇
  2015年   255篇
  2014年   829篇
  2013年   1356篇
  2012年   927篇
  2011年   611篇
  2010年   612篇
  2009年   479篇
  2008年   411篇
  2007年   120篇
  2006年   84篇
  2005年   106篇
  2004年   109篇
  2003年   136篇
  2002年   116篇
  2001年   57篇
  2000年   46篇
  1999年   15篇
  1998年   15篇
  1997年   10篇
  1996年   6篇
  1995年   13篇
  1994年   8篇
  1993年   6篇
  1992年   2篇
  1991年   2篇
  1990年   4篇
  1989年   5篇
  1988年   5篇
  1986年   4篇
  1985年   5篇
  1984年   8篇
  1983年   3篇
  1982年   4篇
  1981年   9篇
  1980年   3篇
  1979年   4篇
  1978年   2篇
  1977年   1篇
  1976年   1篇
排序方式: 共有7553条查询结果,搜索用时 15 毫秒
91.
This paper discusses the development of a children's rights‐based measure of participation and the findings from its use in a survey of 10‐ to 11‐year‐old children (n = 3773). The measure, which was developed in collaboration with a group of children, had a high reliability (Cronbach's alpha = 0.89). Findings suggest that children's positive experience of their participation rights is higher in school than in community, and higher for girls compared to boys. It is argued that involving children in the ‘measurement’ of their own lives has the potential to generate more authentic data on children's lived experiences.  相似文献   
92.
93.
Recently Beh and Farver investigated and evaluated three non‐iterative procedures for estimating the linear‐by‐linear parameter of an ordinal log‐linear model. The study demonstrated that these non‐iterative techniques provide estimates that are, for most types of contingency tables, statistically indistinguishable from estimates from Newton's unidimensional algorithm. Here we show how two of these techniques are related using the Box–Cox transformation. We also show that by using this transformation, accurate non‐iterative estimates are achievable even when a contingency table contains sampling zeros.  相似文献   
94.
北美汉学界的《沧浪诗话》研究在主体构成上包括华裔族群和本土学者两个群体。华裔族群的代表人物是刘若愚、叶维廉、叶嘉莹、欧阳桢等人,本土学者的代表人物是加拿大的林理彰,美国的宇文所安、费维廉等人。整体上看。华裔族群的研究凸显出如下四个主要特点:一是注重影响研究,包括严羽诗论对前代文论的承传及其对后代文论(文学理论和文学批评)的影响;二是对严羽诗论系统中“以禅喻诗”批评方法及“兴趣”、“妙悟”等概念进行了阐释:三是方法上移西释中和中西对话并用;四是注意吸纳中国和日本“严学”家的研究成果。  相似文献   
95.
基于Kendall’sτ秩相关系数的优越性和定义,本文提出了新的具有明确经济意义的动态条件相关copula模型,将常用的Gaussian、Clayton和Gumbel函数统一根据该演化方程实现动态化,构造出三种Kendall’sτ动态条件相关copula模型,可用于刻画不同的相关模式。这些模型不仅参数少、容易估计,避免了现有动态条件相关copula模型构建方法各异导致的在实证中不利于比较的缺点,而且能够进行多步向前预测,有效地减少了进行样本外预测时的计算量,从而为刻画时变、非线性、非对称性和尾部相关等复杂的动态相关模式提供了新方法。  相似文献   
96.
An outlier is defined as an observation that is significantly different from the others in its dataset. In high-dimensional regression analysis, datasets often contain a portion of outliers. It is important to identify and eliminate the outliers for fitting a model to a dataset. In this paper, a novel outlier detection method is proposed for high-dimensional regression problems. The leave-one-out idea is utilized to construct a novel outlier detection measure based on distance correlation, and then an outlier detection procedure is proposed. The proposed method enjoys several advantages. First, the outlier detection measure can be simply calculated, and the detection procedure works efficiently even for high-dimensional regression data. Moreover, it can deal with a general regression, which does not require specification of a linear regression model. Finally, simulation studies show that the proposed method behaves well for detecting outliers in high-dimensional regression model and performs better than some other competing methods.  相似文献   
97.
Bayesian acceptance sampling plans, which utilize prior information on the process variation, can be employed as an alternative to conventional types of plans for taking decisions on the disposition of submitted lots. A special type of double sampling inspection plans by attributes with small acceptance numbers using Bayesian methodology is presented in this paper emphasizing its significance over small acceptance number single sampling plans. The procedures for designing such sampling plans for specified degree of discrimination which would ensure protection to the producer and consumer are discussed with illustrations under the conditions for the application of gamma-Poisson distribution.  相似文献   
98.
张云 《东方论坛》2014,(2):82-88
清代著名藏书家黄丕烈的藏书题跋于版本学、目录学等方面有很大价值,清潘祖荫、缪荃孙等人都曾搜集黄丕烈的藏书题跋,编纂成书。通过对部分黄氏手书题跋与诸家辑本的校勘,可发现后人在转抄过程中出现的讹、脱、倒、衍等问题,其中不少异文涉及是非问题。在诸家辑本基础上对黄氏藏书题跋的重新纂集校录,可为广大读者提供一个更为完整精善的本子。  相似文献   
99.
The purpose of this article is to obtain the jackknifed ridge predictors in the linear mixed models and to examine the superiorities, the linear combinations of the jackknifed ridge predictors over the ridge, principal components regression, r?k class and Henderson's predictors in terms of bias, covariance matrix and mean square error criteria. Numerical analyses are considered to illustrate the findings and a simulation study is conducted to see the performance of the jackknifed ridge predictors.  相似文献   
100.
Non‐governmental organizations (NGOs) and the government of Nepal have made some effort to reduce poverty in Nepal by creating women's affiliation groups, some of which are micro‐credit organizations. Using capabilities as defined by Amartya Sen (Development as freedom, Oxford University Press, New Delhi, 2000), which includes employment opportunities, women's ownership in productive resources such as land and/or homes, educational opportunities, and women's participation in decision‐making in the family, this study evaluated the extent to which women's ethnic group or caste affiliation affected a woman's likelihood of being empowered by participation in these groups. We analyzed a sample of 8,973 women which was taken from the 2011 Nepal Demographic and Health Survey. Previous research has demonstrated that participation in gender‐based groups is correlated with higher economic status. This study adds to the literature on women's affiliation groups by investigating the impact of structural factors, such as caste and ethnicity, on women's self‐help group participation (women's groups and credit groups).  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