全文获取类型
收费全文 | 2178篇 |
免费 | 62篇 |
国内免费 | 16篇 |
专业分类
管理学 | 227篇 |
民族学 | 10篇 |
人口学 | 11篇 |
丛书文集 | 110篇 |
理论方法论 | 94篇 |
综合类 | 656篇 |
社会学 | 129篇 |
统计学 | 1019篇 |
出版年
2024年 | 2篇 |
2023年 | 14篇 |
2022年 | 11篇 |
2021年 | 31篇 |
2020年 | 50篇 |
2019年 | 64篇 |
2018年 | 84篇 |
2017年 | 144篇 |
2016年 | 73篇 |
2015年 | 74篇 |
2014年 | 116篇 |
2013年 | 433篇 |
2012年 | 137篇 |
2011年 | 111篇 |
2010年 | 110篇 |
2009年 | 104篇 |
2008年 | 93篇 |
2007年 | 101篇 |
2006年 | 101篇 |
2005年 | 80篇 |
2004年 | 69篇 |
2003年 | 55篇 |
2002年 | 39篇 |
2001年 | 32篇 |
2000年 | 24篇 |
1999年 | 15篇 |
1998年 | 20篇 |
1997年 | 14篇 |
1996年 | 6篇 |
1995年 | 9篇 |
1994年 | 6篇 |
1993年 | 5篇 |
1992年 | 2篇 |
1991年 | 3篇 |
1990年 | 1篇 |
1989年 | 3篇 |
1987年 | 2篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1984年 | 2篇 |
1983年 | 3篇 |
1982年 | 3篇 |
1981年 | 2篇 |
1980年 | 2篇 |
1979年 | 1篇 |
1978年 | 2篇 |
1975年 | 1篇 |
排序方式: 共有2256条查询结果,搜索用时 156 毫秒
71.
Uniform designs are widely used in various scientific investigations and industrial applications. By considering all possible level permutation of the factors, a connection between average centered L2-discrepancy and generalized wordlength pattern for asymmetrical fractional factorial designs is derived. Moreover, we present new lower bounds to the average centered L2-discrepancy for symmetrical and asymmetrical U-type designs. For illustration of the theoretical results, the lower bounds for symmetrical and asymmetrical U-type designs are tabulated, and numerical results indicate that our lower bounds behave well and can be recommended for use in practice. 相似文献
72.
Jiting Huang 《统计学通讯:模拟与计算》2019,48(6):1891-1900
We study the variable selection problem for a class of generalized linear models with endogenous covariates. Based on the instrumental variable adjustment technology and the smooth-threshold estimating equation (SEE) method, we propose an instrumental variable based variable selection procedure. The proposed variable selection method can attenuate the effect of endogeneity in covariates, and is easy for application in practice. Some theoretical results are also derived such as the consistency of the proposed variable selection procedure and the convergence rate of the resulting estimator. Further, some simulation studies and a real data analysis are conducted to evaluate the performance of the proposed method, and simulation results show that the proposed method is workable. 相似文献
73.
In this article, we propose a new class of semiparametric instrumental variable models with partially varying coefficients, in which the structural function has a partially linear form and the impact of endogenous structural variables can vary over different levels of some exogenous variables. We propose a three-step estimation procedure to estimate both functional and constant coefficients. The consistency and asymptotic normality of these proposed estimators are established. Moreover, a generalized F-test is developed to test whether the functional coefficients are of particular parametric forms with some underlying economic intuitions, and furthermore, the limiting distribution of the proposed generalized F-test statistic under the null hypothesis is established. Finally, we illustrate the finite sample performance of our approach with simulations and two real data examples in economics. 相似文献
74.
Joshua R. Knapp Therese A. Sprinkle Michael J. Urick Kelly A. Delaney‐Klinger 《Nonprofit management & leadership》2019,30(1):133-153
Although we know that high‐quality employee–organization relationships are beneficial, these relationships are complex and not fully understood, especially among employees of nonprofit organizations. In particular, we know little about how these employees perceive trust, which may overlook an important contributor to effective management. We begin to address this issue by testing a new theoretical model that conceptualizes perceived insider status, psychological ownership, and organizational identification as foundations for the perception of justice and subsequent trust. Our results indicate that psychological ownership and perceived insider status relate to trust through procedural and interpersonal justice. These results contrast those typically found in for‐profit contexts in that organizational identification did not predict justice and that distributive and informational justice did not predict trust. 相似文献
75.
Stacey E. McElroy-Heltzel Tera R. Jordan Ted G. Futris Allen W. Barton Antoinette K. Landor Kameron J. Sheats 《Journal of youth studies》2019,22(1):124-137
Much of the literature on interpersonal trust is quantitative in nature, using scales developed primarily with White middle-class and upper-class adults. To understand how another racial group of a different socioeconomic background and age views interpersonal trust, we considered the experiences of 22 low-income Black adolescents. The adolescents participated in a relationship education program and were interviewed about their interpersonal trust experiences. Results of a qualitative data analysis revealed that most adolescents defined interpersonal trust based on honesty and fidelity, with a particular emphasis on monogamy in romantic relationships. Adolescents identified direct messages from family members and personal relationship experiences as sources of socialization for interpersonal trust. Although some adolescents reported that the relationship education program enhanced their understanding of and willingness to trust, others maintained that trust can only be learned through personal experiences. Though the adolescents generally trusted family members, they experienced challenges trusting friends and romantic partners. Despite this, adolescents considered interpersonal trust a vital and a necessary part of romantic relationships. We discuss implications of the findings for relationship stability and satisfaction. 相似文献
76.
程永文 《合肥学院学报(社会科学版)》2007,24(2):34-37
我国的房地产融资完全依赖商业银行,致使银行承担很高的信用风险,积聚经营风险。阐明为了减少银行信用风险,解决房地产融资问题,大力发展房地产信托投资的可行性;还运用经济学原理解释目前房地产信托投资的总体规模偏小的原因,并提出改善的方法。 相似文献
77.
公众科学知识素养的缺乏,社会功能的分工及科技民主价值观念的形成,决定了专家参与危机管理的必要性。中国危机管理面临着突出的专家信任失灵问题。公众对专家知识期望的理想化、专家自身知识的价值偏向、专家参与机制有效性无法保证、信息公开透明度不够等,从知识论层面与现实层面构成了信任失灵的根源。构建专家信息库、提高言论被“收买”的风险成本、完善良好的沟通机制是重获专家信任权威的有效策略。 相似文献
78.
气候资源不是《宪法》、《物权法》上明确列举的国家所有权客体,也不具有权利客体的特征。气候资源与国家所有权客体在权利归属、表现形态、使用方式、存在目的上存在较大差异,乃是一种公共财产。基于公共信托理论,国家是公共财产的受托人,对气候资源行使诸如气候资源规划权、保护区设立权、纠纷裁决权及开发利用行政许可权等管理权。因为气候资源不是国家所有权客体,源自气候资源国家管理权的民事主体对气候资源开发利用的权利乃是特许物权。气候资源特许物权具有公私兼容的性质,既具有公法性,又具有私法性。 相似文献
79.
在增进政府与公民社会的合作过程中,应开发利用信任资源。信任的秩序功能随着人类社会的发展而增强,到后工业社会发展为人类合作的主导模式,合作型信任为合理社会秩序的构建提供了充分的社会支持。以后工业化与全球化时代的政府治理模式作为研究立足点,良性善治的社会治理模式需要合作信任作为其文化建设体系与社会整合机制。 相似文献
80.
以消费者购买决策理论为基础,探讨消费升级下在线信任及其对在线消费行为的影响,选取商家声誉、物流服务质量、平台功能和促销活动四个维度进行分析.研究表明:在线信任、物流服务质量、平台功能以及促销活动对在线购买意愿的正向影响显著;此外,在线信任在物流服务质量、平台功能以及促销活动对在线购买意愿的影响中起到部分中介作用,在商家声誉对在线购买意愿的影响中起到完全中介作用.当前,在消费升级环境下,线上零售商应注重声誉的打造,通过提高在线信任来降低减轻消费者风险,同时在运营中优化线上购买流程和商品陈列设置,精准匹配促销信息,保持顾客感知优势. 相似文献