全文获取类型
收费全文 | 4816篇 |
免费 | 215篇 |
国内免费 | 45篇 |
专业分类
管理学 | 151篇 |
劳动科学 | 2篇 |
民族学 | 65篇 |
人口学 | 31篇 |
丛书文集 | 530篇 |
理论方法论 | 236篇 |
综合类 | 3488篇 |
社会学 | 183篇 |
统计学 | 390篇 |
出版年
2024年 | 13篇 |
2023年 | 38篇 |
2022年 | 61篇 |
2021年 | 50篇 |
2020年 | 87篇 |
2019年 | 111篇 |
2018年 | 93篇 |
2017年 | 108篇 |
2016年 | 126篇 |
2015年 | 128篇 |
2014年 | 295篇 |
2013年 | 306篇 |
2012年 | 378篇 |
2011年 | 392篇 |
2010年 | 287篇 |
2009年 | 307篇 |
2008年 | 276篇 |
2007年 | 379篇 |
2006年 | 325篇 |
2005年 | 256篇 |
2004年 | 245篇 |
2003年 | 229篇 |
2002年 | 183篇 |
2001年 | 168篇 |
2000年 | 91篇 |
1999年 | 40篇 |
1998年 | 22篇 |
1997年 | 14篇 |
1996年 | 13篇 |
1995年 | 10篇 |
1994年 | 12篇 |
1993年 | 12篇 |
1992年 | 8篇 |
1991年 | 2篇 |
1989年 | 2篇 |
1988年 | 4篇 |
1987年 | 2篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1983年 | 1篇 |
排序方式: 共有5076条查询结果,搜索用时 15 毫秒
81.
建设河北特色文化大省,实现文化大发展、大繁荣,是时代的课题。高校和地方文化各自独立发展,缺乏竞合的现状是制约河北文化发展的一个难题。高校周边文化圈建设是解决这一难题、建设文化特色大省的有效途径,河北省政府牵头,协调高校,以地方文化为主体,采取以点带面的形式,逐步实现文化圈的建设。 相似文献
82.
Different tax systems, and their impact on work motivation and tax compliance are significant issues in contemporary political and economic debates. The proportional feature of a flat tax system is assumed to lead to higher performance, while the fairness of the redistributive progressive tax system is assumed to result in higher tax compliance. However, empirical findings on the topic are inconclusive. Both work performance and tax compliance under different tax systems were examined in an experiment, with special attention devoted to the effect of a change in tax systems. A flat tax system was supposed to induce greater work performance, whereas a progressive tax system was expected to increase tax compliance based on fairness perceptions, allowing for the opposite effect due to higher complexity. Furthermore, it was assumed that performance and tax payments would be influenced by motives of self-interest. The design included 20 rounds with a real-effort task in each round, determining participants’ experimental income. Participants (N = 191) made decisions about their tax payments from round-to-round in four different experimental conditions: (1) a flat tax system, (2) a progressive tax system, (3) starting with a flat and changing to a progressive, and (4) starting with a progressive and changing to a flat tax system. Results indicate higher work performance in a progressive system. However, a change from a progressive tax system to a flat system led to increased tax compliance. 相似文献
83.
马景卫 《中南林业科技大学学报(社会科学版)》2012,6(6):174-176
散打之力量是散打运动中除运动技术等要素外,非常重要的另一要素,散打之力量在运动中表现出两个方面的应用,即散打之局部力量和整体力量;散打之局部力量和整体力量在比赛中交替展现,正是由于散打之局部力量和整体力量的不停变换使用及不同情况下各种力量共同作用,运动员才能在比赛中赢得胜利。散打之局部力量与整体力量的科学应用与训练不仅塑造了练习者完美的运动身形,而且培养了个人不凡的运动气质,是一项完美的体育运动。 相似文献
84.
Varying-coefficient models are very useful for longitudinal data analysis. In this paper, we focus on varying-coefficient models for longitudinal data. We develop a new estimation procedure using Cholesky decomposition and profile least squares techniques. Asymptotic normality for the proposed estimators of varying-coefficient functions has been established. Monte Carlo simulation studies show excellent finite-sample performance. We illustrate our methods with a real data example. 相似文献
85.
David R. Bickel 《统计学通讯:理论与方法》2017,46(21):10788-10799
Empirical Bayes estimates of the local false discovery rate can reflect uncertainty about the estimated prior by supplementing their Bayesian posterior probabilities with confidence levels as posterior probabilities. This use of coherent fiducial inference with hierarchical models generates set estimators that propagate uncertainty to varying degrees. Some of the set estimates approach estimates from plug-in empirical Bayes methods for high numbers of comparisons and can come close to the usual confidence sets given a sufficiently low number of comparisons. 相似文献
欧纯智 《北京工商大学学报(社会科学版)》2017,32(2):74-81
税收征管领域是容易出现寻租行为的领域.文章用模型与图形分析方法识别认知税收征管实践中各种表现形式的寻租,从寻租对社会福利造成的损失和寻租的自我膨胀两个维度,揭示寻租的社会危害并分析论述征纳双方寻租的结盟共谋与自然循环.文章结合寻租理论和征管实践,引出对征管领域寻租行为分类和危害的奈理化认识,并就如何从优化制度供给入手防范和清除税收征管领域的寻租行为,为消解征纳寻租交易的制度建设提出了五个方面的建议. 相似文献
87.
《Journal of Statistical Computation and Simulation》2012,82(9):1367-1382
We consider the problem of modelling a long-memory time series using piecewise fractional autoregressive integrated moving average processes. The number as well as the locations of structural break points (BPs) and the parameters of each regime are assumed to be unknown. A four-step procedure is proposed to find out the BPs and to estimate the parameters of each regime. Its effectiveness is shown by Monte Carlo simulations and an application to real traffic data modelling is considered. 相似文献
88.
张中飞 《浙江海洋学院学报(人文科学版)》2012,29(4):39-44
马克思主义人学思想是一个非常完整、科学的理论体系,其形成和发展主要经历了三个发展阶段:从博士论文到《1844年经济学哲学手稿》是其萌芽时期,提出了以劳动为基础的人学理论框架;从《神圣家族》到《共产党宣言》是其基本形成和发展时期,确立了人学理论的唯物主义立场;从《共产党宣言》到《资本论》是其成熟和完善时期,形成了以人的自由全面发展为最终归宿的完备人学理论体系。马克思主义人学在唯物史观的基础上实现了对以往人学理论的超越,为人和社会的发展开辟了广阔的前景。 相似文献
89.
《Journal of Statistical Computation and Simulation》2012,82(1):35-50
There have been a number of procedures used to analyze non-monotonic binary data to predict the probability of response. Some classical procedures are the Up and Down strategy, the Robbins–Monro procedure, and other sequential optimization designs. Recently, nonparametric procedures such as kernel regression and local linear regression (llogr) have been applied to this type of data. It is a well known fact that kernel regression has problems fitting the data near the boundaries and a drawback with local linear regression is that it may be “too linear” when fitting data from a curvilinear function. The procedure introduced in this paper is called local logistic regression, which fits a logistic regression function at each of the data points. An example is given using United States Army projectile data that supports the use of local logistic regression when analyzing non-monotonic binary data for certain response curves. Properties of local logistic regression will be presented along with simulation results that indicate some of the strengths of the procedure. 相似文献
90.
We investigate the convergence rates of uniform bias-corrected confidence intervals for a smooth curve using local polynomial regression for both the interior and boundary region. We discuss the cases when the degree of the polynomial is odd and even. The uniform confidence intervals are based on the volume-of-tube formula modified for biased estimators. We empirically show that the proposed uniform confidence intervals attain, at least approximately, nominal coverage. Finally, we investigate the performance of the volume-of-tube based confidence intervals for independent non-Gaussian errors. 相似文献