全文获取类型
收费全文 | 24823篇 |
免费 | 744篇 |
国内免费 | 292篇 |
专业分类
管理学 | 690篇 |
劳动科学 | 9篇 |
民族学 | 240篇 |
人才学 | 6篇 |
人口学 | 309篇 |
丛书文集 | 2955篇 |
理论方法论 | 861篇 |
综合类 | 19849篇 |
社会学 | 400篇 |
统计学 | 540篇 |
出版年
2024年 | 36篇 |
2023年 | 103篇 |
2022年 | 162篇 |
2021年 | 182篇 |
2020年 | 232篇 |
2019年 | 214篇 |
2018年 | 216篇 |
2017年 | 250篇 |
2016年 | 354篇 |
2015年 | 460篇 |
2014年 | 1248篇 |
2013年 | 1046篇 |
2012年 | 1412篇 |
2011年 | 1804篇 |
2010年 | 1500篇 |
2009年 | 1564篇 |
2008年 | 1645篇 |
2007年 | 2044篇 |
2006年 | 1987篇 |
2005年 | 1899篇 |
2004年 | 1782篇 |
2003年 | 1667篇 |
2002年 | 1360篇 |
2001年 | 1117篇 |
2000年 | 629篇 |
1999年 | 238篇 |
1998年 | 116篇 |
1997年 | 117篇 |
1996年 | 89篇 |
1995年 | 96篇 |
1994年 | 76篇 |
1993年 | 43篇 |
1992年 | 50篇 |
1991年 | 31篇 |
1990年 | 25篇 |
1989年 | 28篇 |
1988年 | 15篇 |
1987年 | 10篇 |
1986年 | 5篇 |
1985年 | 2篇 |
1984年 | 2篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1981年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
791.
透析实施生育保险制度的局势 总被引:1,自引:1,他引:0
从社会学视角对实施生育保险制度的必要性进行探讨,分别从宏观(包括人口转变规律、经济体制改革、提高人口素质的需求三个方面)、中观(包括社会支持网络的变迁、保障女性群体地位、保障企业平等竞争三个方面)和微观层面(包括生育观念的转变、生育的风险性、体现女性的生育价值三个方面)进行层层剖析,说明实施和拓宽生育保险制度势在必行。 相似文献
792.
青藏高原特色农业国际竞争力评价指标体系的构建 总被引:2,自引:0,他引:2
基于农业国际竞争力评价指标体系相关文献回顾的基础上,从国内比较优势指标、显示性指标、解释性指标和实体性指标四个方面提出了青藏高原特色农业国际竞争力的评价标准,建立了包括4个一级指标、12个二级指标和24个三级指标的特色农业国际竞争力的评价指标体系,以期为进一步研究青藏高原特色农业发展提供参考. 相似文献
793.
传统节日文化生存发展策略——写在传统节日法定化之后 总被引:2,自引:0,他引:2
当前,中国传统节日文化要得以生存与发展,有三个方面的工作是紧迫和重要的:提升对传统节日的"文化自觉",这是中国传统节日文化的生存之本,这方面媒体、学校教育、家庭、社区均有着重要的责任;重建传统节日的符号体系,在这方面,企业、商家和政府肩负着重要的使命;转换传统节日的参与模式,将封闭型的"血缘共同体参与模式"转换为适应现代生活的开放型的"业缘共同体参与模式",这对中国传统节日文化的生存与发展有着现实而又长远的意义,这方面,各类社会组织起着重要的作用. 相似文献
794.
T.V. Ignatova V.A. Ivichev F.F. Khusnoiarov 《Russian social science review : a journal of translations》2017,58(1):69-73
It is impossible to imagine the contemporary Internet without social media. Government agents, commercial, state, and social organizations, the opposition, and other citizens use social media as a giant turbine. Unfortunately, this turbine can also be used to spread disinformation as well as hostile propaganda on a mass scale. In this article we show how vulnerable social media are to infiltration by botnets with the goal of launching information attacks. 相似文献
795.
Margarita Frederico Associate Professor Maureen Long Patricia McNamara Lynne McPherson Richard Rose Associate Professor 《Child & Family Social Work》2017,22(2):1064-1074
How best to support children and young people in foster care remains a challenge for child welfare. There has been little Australian research on the outcomes for children and young people placed in therapeutic foster care (TFC). This article aims to address this knowledge gap, presenting the evaluation of a state‐wide model of TFC known as the Circle Program operating in Victoria, Australia. Data sources for the study were case assessment analysis; surveys of foster carers, program workers and other stakeholders in the sector; and both focus groups and individual interviews with foster care workers. The evaluation found that the Circle Program lessened the number of unplanned exits of children from foster placements compared with generalist foster care. Another important finding was that the Circle Program positively influenced foster carers' decisions to stay in the carer role. Key components perceived as contributing to outcomes of the Circle Program included enhanced training of foster carers, intensive carer support, specialist therapeutic support to the child and carer, therapeutic service to family members and a network of services to provide support to the child. 相似文献
796.
M. Hermanns 《Journal of Statistical Computation and Simulation》2017,87(3):607-630
Point and interval estimators for the scale parameter of the component lifetime distribution of a k-component parallel system are obtained when the component lifetimes are assumed to be independently and identically exponentially distributed. We prove that the maximum likelihood estimator of the scale parameter based on progressively Type-II censored system lifetimes is unique and can be obtained by a fixed-point iteration procedure. In particular, we illustrate that the Newton–Raphson method does not converge for any initial value. Furthermore, exact confidence intervals are constructed by a transformation using normalized spacings and other component lifetime distributions including Weibull distribution are discussed. 相似文献
797.
ABSTRACTIn 2013, after nearly two decades of operating in a distributed legacy Integrated Library System (ILS) environment on local servers, the Orbis Cascade Alliance, a consortium of public and private academic libraries in Washington, Oregon, and Idaho, began a two-year-long process to migrate its 37 members to a shared implementation of Ex Libris's cloud-based Alma library management system (LMS) and Primo discovery interface. Although much has been written on electronic resource management (ERM) functionality at an institution level, little has been written on serials and ERM functionality and workflows within a shared consortial environment. This article discusses the challenges and opportunities of implementing a consortial-based LMS, with particular emphasis on serials and ERM functionality. Key migration issues related to serials control, acquisitions, licensing, administration, cataloging, statistics, and interoperability are examined at the institutional and large-scale networked levels. Benefits and limitations of using a shared consortial cloud-based LMS are explored, and the overall capabilities of the Alma LMS for electronic resource management are reviewed. 相似文献
798.
Ahmed N. Albatineh Hafiz M. R. Khan Bashar Zogheib Golam B. M. Kibria 《统计学通讯:模拟与计算》2017,46(5):4018-4034
This article investigates the effects of number of clusters, cluster size, and correction for chance agreement on the distribution of two similarity indices, namely, Jaccard and Rand indices. Skewness and kurtosis are calculated for the two indices and their corrected forms then compared with those of the normal distribution. Three clustering algorithms are implemented: complete linkage, Ward, and K-means. Data were randomly generated from bivariate normal distributions with specified means and variance covariance matrices. Three-way ANOVA is performed to assess the significance of the design factors using skewness and kurtosis of the indices as responses. Test statistics for testing skewness and kurtosis and observed power are calculated. Simulation results showed that independent of the clustering algorithms or the similarity indices used, the interaction effect cluster size x number of clusters and the main effects of cluster size and number of clusters were found always significant for skewness and kurtosis. The three way interaction of cluster size x correction x number of clusters was significant for skewness of Rand and Jaccard indices using all clustering algorithms, but was not significant using Ward's method for both Rand and Jaccard indices, while significant for Jaccard only using complete linkage and K-means algorithms. The correction for chance agreement was significant for skewness and kurtosis using Rand and Jaccard indices when complete linkage method is used. Hence, such design factors must be taken into consideration when studying distribution of such indices. 相似文献
799.
We derive an empirical poverty index containing most of those proposed in the literature. Then, we study its asymptotic behavior by using empirical processes theory. From the results obtained, we derive a Wald-type test for comparing a vector of theoretical poverty indices to a vector of reference indices. We study the test statistic under the null hypothesis of equality, fixed alternatives, and a sequence of local alternatives. A simulation experiment conducted shows that our test performs well for exponential and Pareto data. 相似文献
800.
Copulas have proved to be very successful tools for the flexible modeling of dependence. Bivariate copulas have been deeply researched in recent years, while building higher-dimensional copulas is still recognized to be a difficult task. In this paper, we study the higher-dimensional dependent reliability systems using a type of decomposition called “vine,” by which a multivariate distribution can be decomposed into a cascade of bivariate copulas. Some equations of system reliability for parallel, series, and k-out-of-n systems are obtained and then decomposed based on C-vine and D-vine copulas. Finally, a shutdown system is considered to illustrate the results obtained in the paper. 相似文献