全文获取类型
收费全文 | 15120篇 |
免费 | 309篇 |
国内免费 | 15篇 |
专业分类
管理学 | 1878篇 |
民族学 | 93篇 |
人才学 | 2篇 |
人口学 | 1318篇 |
丛书文集 | 147篇 |
理论方法论 | 1456篇 |
综合类 | 714篇 |
社会学 | 7924篇 |
统计学 | 1912篇 |
出版年
2023年 | 88篇 |
2022年 | 68篇 |
2021年 | 125篇 |
2020年 | 241篇 |
2019年 | 309篇 |
2018年 | 372篇 |
2017年 | 545篇 |
2016年 | 403篇 |
2015年 | 313篇 |
2014年 | 360篇 |
2013年 | 2303篇 |
2012年 | 572篇 |
2011年 | 541篇 |
2010年 | 451篇 |
2009年 | 389篇 |
2008年 | 461篇 |
2007年 | 502篇 |
2006年 | 490篇 |
2005年 | 428篇 |
2004年 | 350篇 |
2003年 | 309篇 |
2002年 | 316篇 |
2001年 | 390篇 |
2000年 | 321篇 |
1999年 | 317篇 |
1998年 | 230篇 |
1997年 | 186篇 |
1996年 | 185篇 |
1995年 | 192篇 |
1994年 | 184篇 |
1993年 | 174篇 |
1992年 | 210篇 |
1991年 | 204篇 |
1990年 | 199篇 |
1989年 | 174篇 |
1988年 | 181篇 |
1987年 | 200篇 |
1986年 | 164篇 |
1985年 | 168篇 |
1984年 | 183篇 |
1983年 | 165篇 |
1982年 | 166篇 |
1981年 | 127篇 |
1980年 | 122篇 |
1979年 | 140篇 |
1978年 | 106篇 |
1977年 | 82篇 |
1976年 | 97篇 |
1975年 | 112篇 |
1974年 | 90篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
绿党是西方兴起的一种新的政治力量,其哲学观是把生态环境利益上升为人类最高利益,并以自然生态环境为国家社会中心的生态中心主义,它的出现带来的是对传统价值观念、经济发展模式的变革性的挑战,对宪法基本原则的挑战也不容忽视。其生态权利之上的价值观对宪法基本原则的挑战表现为人民主权原则的动摇、基本人权原则的错位、权力制约原则的变异和法治原则的化。 相似文献
52.
Projecting losses associated with hurricanes is a complex and difficult undertaking that is wrought with uncertainties. Hurricane Charley, which struck southwest Florida on August 13, 2004, illustrates the uncertainty of forecasting damages from these storms. Due to shifts in the track and the rapid intensification of the storm, real-time estimates grew from 2 to 3 billion dollars in losses late on August 12 to a peak of 50 billion dollars for a brief time as the storm appeared to be headed for the Tampa Bay area. The storm hit the resort areas of Charlotte Harbor near Punta Gorda and then went on to Orlando in the central part of the state, with early poststorm estimates converging on a damage estimate in the 28 to 31 billion dollars range. Comparable damage to central Florida had not been seen since Hurricane Donna in 1960. The Florida Commission on Hurricane Loss Projection Methodology (FCHLPM) has recognized the role of computer models in projecting losses from hurricanes. The FCHLPM established a professional team to perform onsite (confidential) audits of computer models developed by several different companies in the United States that seek to have their models approved for use in insurance rate filings in Florida. The team's members represent the fields of actuarial science, computer science, meteorology, statistics, and wind and structural engineering. An important part of the auditing process requires uncertainty and sensitivity analyses to be performed with the applicant's proprietary model. To influence future such analyses, an uncertainty and sensitivity analysis has been completed for loss projections arising from use of a Holland B parameter hurricane wind field model. Uncertainty analysis quantifies the expected percentage reduction in the uncertainty of wind speed and loss that is attributable to each of the input variables. 相似文献
53.
By allowing voters to choose among candidates with competingpolicy orientations and by providing incentives for incumbentsto shape policy in the direction the public desires, electionsare thought to provide the foundation that links governmentpolicy to the preferences of the governed. In this article Iexamine the extent to which the preference/policy link is biasedtoward the preferences of high-income Americans. Using an originaldata set of almost two thousand survey questions on proposedpolicy changes between 1981 and 2002, I find a moderately strongrelationship between what the public wants and what the governmentdoes, albeit with a strong bias toward the status quo. But Ialso find that when Americans with different income levels differin their policy preferences, actual policy outcomes stronglyreflect the preferences of the most affluent but bear virtuallyno relationship to the preferences of poor or middle-incomeAmericans. The vast discrepancy I find in government responsivenessto citizens with different incomes stands in stark contrastto the ideal of political equality that Americans hold dear.Although perfect political equality is an unrealistic goal,representational biases of this magnitude call into questionthe very democratic character of our society. 相似文献
54.
55.
The extent to which 4‐month attentional regulation during an infant‐mother still‐face situation and 12‐month attachment security during the Strange Situation predicted rates of compliance and noncompliance during a cleanup task at 36 months was examined longitudinally in 70 infant‐mother dyads. Hierarchical multiple regression analyses indicated that infants who showed more attentional regulation during the still‐face situation with mothers later showed a higher rate of committed compliance and a lower rate of situational compliance during cleanup with mothers. Furthermore, lower levels of attentional regulation were later associated with higher rates of assertive behavior, but only for infants in an insecure attachment relationship. 相似文献
56.
本文以二甘醇代替其它多元醇与已二酸反应合成聚酯多元醇 ,再以合适的OH/NCO比与二异氰酸酯TDI生产聚氨酯胶粘剂 .成本低 ,各项粘接性能达到或超过同类产品 .同时利用了制备乙二醇时的副产品二甘醇 ,一举数得 相似文献
57.
首先阐述熊彼特的创新理论 ,指出其不足之处 ,继而阐明研究企业创新体系的必要性 ,最终从企业发展的命题出发 ,提出了企业创新与企业发展、企业创新与经营资源、企业创新与企业核心能力等企业创新体系研究的思路框架 相似文献
58.
The physical and psychological effects of Turner's Syndrome, a female sex chromosome abnormality, briefly are described. Principles for helping women master the special challenges posed by the disorder are discussed. The authors argue that women with TS must take control of defining their identities and potential in order to attain full status within society. 相似文献
59.
Martin Schmeiser 《Soziologie》2006,35(2):178-191
The article analyzes the consequences of the marginal status of the Sociology of Professions in Germany during the last decades on the efforts of the new working group “Sociology of Professions.” This new working group has been established in order to make professions an attractive research topic. First it will be demonstrated that a lack of a solid grounding in the international literature influences the new efforts to publish textbooks. Second it will be shown that there is a missing historical perspective in the old and new sociology of professions in Germany. Finally everything seems to indicate that the new working group is more interested in questions of general sociology and occupational sociology than in questions of a sociology of professions. 相似文献
60.
‘The Effect of Social Networks at Origin
Communities on Migrant Remittances: Evidence from Nang Rong District’ 总被引:1,自引:0,他引:1
Martin Piotrowski 《Revue europeenne de demographie》2006,22(1):67-94
The literature on the effect of social networks on migrant remittances has ignored the influence of a household’s embeddedness in social networks in the origin community. This paper, using multilevel statistical modeling and social survey data from Nang Rong district in Thailand, examines how remittances between migrants and origin households are associated with social networks. Social network measures come from data on sibling and rice harvest network ties. Rice harvesting is very important to the rural economy, and households participating in the network are privy to vital sources of news and information that spread through the network. Results support the notion that migrants remit less to households that are isolates in the rice-harvesting network, which is theorized to be associated with access to information about employment options. 相似文献