全文获取类型
收费全文 | 415篇 |
免费 | 18篇 |
国内免费 | 1篇 |
专业分类
管理学 | 41篇 |
民族学 | 5篇 |
人口学 | 4篇 |
丛书文集 | 37篇 |
理论方法论 | 10篇 |
综合类 | 186篇 |
社会学 | 35篇 |
统计学 | 116篇 |
出版年
2022年 | 4篇 |
2021年 | 3篇 |
2020年 | 13篇 |
2019年 | 9篇 |
2018年 | 9篇 |
2017年 | 19篇 |
2016年 | 12篇 |
2015年 | 11篇 |
2014年 | 25篇 |
2013年 | 53篇 |
2012年 | 32篇 |
2011年 | 25篇 |
2010年 | 25篇 |
2009年 | 26篇 |
2008年 | 21篇 |
2007年 | 26篇 |
2006年 | 15篇 |
2005年 | 13篇 |
2004年 | 19篇 |
2003年 | 18篇 |
2002年 | 14篇 |
2001年 | 12篇 |
2000年 | 8篇 |
1999年 | 5篇 |
1998年 | 1篇 |
1997年 | 1篇 |
1996年 | 2篇 |
1994年 | 2篇 |
1992年 | 3篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1982年 | 2篇 |
1980年 | 1篇 |
1979年 | 1篇 |
排序方式: 共有434条查询结果,搜索用时 625 毫秒
1.
陈跃娟 《吉林工程技术师范学院学报》2020,36(3):31-33,65
农村义务教育在我国义务教育体系中占有重要地位,特别是对于拥有9亿多农村人口的我国来说,农村义务教育关系到每一个农村家庭子女的成长和成才,关系到农村经济振兴战略,更关系到国家和民族的未来。对农村义务教育阶段培育和践行社会主义核心价值观的必要性以及在这一过程中存在的困境进行深入研究,并据此提出相关的应对策略,能够使农村义务教育在社会主义核心价值观的指引下持续、快速、全面、健康地发展。 相似文献
2.
在市场边界瞬息万变的复杂商业环境下 ,只有真正具有核心竞争力的企业才可能驾驭市场 ,实现可持续发展。而核心竞争力来自于不断的创新 ,企业的核心竞争力要从技术、产品、管理和营销的创新中加以创造 相似文献
3.
价值多元化视阈下大学生核心价值认同危机与重构 总被引:2,自引:0,他引:2
中国社会正处于一个急剧转型时期,人们的生活方式发生了极大变化,出现了许多认同危机,特别是核心价值认同危机。然而,核心价值认同是关系到社会安定和发展的一个重要的心理和文化因素。大学生是推动社会前进的重要力量和潜在力量,因此,考察大学生核心价值认同危机的表现形式,分析产生核心价值认同危机的原因,提出以社会主义核心价值体系重塑大学生价值认同对构建社会主义和谐社会具有重要的现实意义。 相似文献
4.
We propose four different GMM estimators that allow almost consistent estimation of the structural parameters of panel probit models with fixed effects for the case of small Tand large N. The moments used are derived for each period from a first order approximation of the mean of the dependent variable conditional on explanatory variables and on the fixed effect. The estimators differ w.r.t. the choice of instruments and whether they use trimming to reduce the bias or not. In a Monte Carlo study, we compare these estimators with pooled probit and conditional logit estimators for different data generating processes. The results show that the proposed estimators outperform these competitors in several situations. 相似文献
5.
J. E. Kelsall & P. J. Diggle 《Journal of the Royal Statistical Society. Series C, Applied statistics》1998,47(4):559-573
A common problem in environmental epidemiology is the estimation and mapping of spatial variation in disease risk. In this paper we analyse data from the Walsall District Health Authority, UK, concerning the spatial distributions of cancer cases compared with controls sampled from the population register. We formulate the risk estimation problem as a nonparametric binary regression problem and consider two different methods of estimation. The first uses a standard kernel method with a cross-validation criterion for choosing the associated bandwidth parameter. The second uses the framework of the generalized additive model (GAM) which has the advantage that it can allow for additional explanatory variables, but is computationally more demanding. For the Walsall data, we obtain similar results using either the kernel method with controls stratified by age and sex to match the age–sex distribution of the cases or the GAM method with random controls but incorporating age and sex as additional explanatory variables. For cancers of the lung or stomach, the analysis shows highly statistically significant spatial variation in risk. For the less common cancers of the pancreas, the spatial variation in risk is not statistically significant. 相似文献
6.
社会主义核心价值体系已成为学术界研究的热点。如何从新的角度深入理解社会主义核心价值体系,是研究走向纵深的必然要求。通过生态思维方式,基于生态学研究理论与方法,运用开放性、预见性、和谐性的思维视角解读社会主义核心价值体系,领悟普遍联系性、永恒发展性、对立统一性等特征。运用生态思维方式解读社会主义核心价值体系,具有一定的理论价值和实践意义。 相似文献
7.
《Journal of Statistical Computation and Simulation》2012,82(7):565-584
Asymptotic confidence (delta) intervals and intervals based upon the use of Fieller's theorem are alternative methods for constructing intervals for the <$>\gamma<$>% effective doses (ED<$>_\gamma<$>). Sitter and Wu (1993) provided a comparison of the two approaches for the ED<$>_{50}<$>, for the case in which a logistic dose response curve is assumed. They showed that the Fieller intervals are generally superior. In this paper, we introduce two new families of intervals, both of which include the delta and Fieller intervals as special cases. In addition we consider interval estimation of the ED<$>_{90}<$> as well as the ED<$>_{50}<$>. We provide a comparison of the various methods for the problem of constructing a confidence interval for the ED<$>_\gamma<$>. 相似文献
8.
Probabilistic risk assessment (PRA) is a useful tool to assess complex interconnected systems. This article leverages the capabilities of PRA tools developed for industrial and nuclear risk analysis in community resilience evaluations by modeling the food security of a community in terms of its built environment as an integrated system. To this end, we model the performance of Gilroy, CA, a moderate‐size town, with regard to disruptions in its food supply caused by a severe earthquake. The food retailers of Gilroy, along with the electrical power network, water network elements, and bridges are considered as components of a system. Fault and event trees are constructed to model the requirements for continuous food supply to community residents and are analyzed efficiently using binary decision diagrams (BDDs). The study also identifies shortcomings in approximate classical system analysis methods in assessing community resilience. Importance factors are utilized to rank the importance of various factors to the overall risk of food insecurity. Finally, the study considers the impact of various sources of uncertainties in the hazard modeling and performance of infrastructure on food security measures. The methodology can be applicable for any existing critical infrastructure system and has potential extensions to other hazards. 相似文献
9.
Since the 1980s outsourcing has been a major topic in both economic and management literature. Economic literature tends to focus on the transaction cost perspective. In management literature the core competence approach prevails. An emerging alternative view on outsourcing is the power and dependence perspective. Aspects of power and dependence become visible in four case studies involving the maintenance of capital assets. In each instance both the buyer and supplier sides of the dyad are examined. The paper concludes with managerial implications and research opportunities. 相似文献
10.
付晓青 《山东科技大学学报(社会科学版)》2007,9(3):83-87
以"自然"论文学,汉朝<淮南子>已有记载,但只言片语,语焉不详,直到魏晋鸿篇<文心雕龙>才有了真正意义上的"自然"论文学观.刘勰以"自然之道"来阐释文学创作的根本原则,从哲学本体论高度论证"文"之产生与存在的必然性、"文"与"质"的本质统一关系,并以此为核心探讨了文学创作之发生、文学风格之生成、创作自由之实现等一系列重要问题,建立了相当系统化的"文道自然"观. 相似文献