全文获取类型
收费全文 | 4495篇 |
免费 | 61篇 |
专业分类
管理学 | 634篇 |
民族学 | 20篇 |
人口学 | 447篇 |
丛书文集 | 17篇 |
教育普及 | 1篇 |
理论方法论 | 412篇 |
综合类 | 51篇 |
社会学 | 2074篇 |
统计学 | 900篇 |
出版年
2023年 | 34篇 |
2021年 | 46篇 |
2020年 | 96篇 |
2019年 | 105篇 |
2018年 | 104篇 |
2017年 | 168篇 |
2016年 | 125篇 |
2015年 | 69篇 |
2014年 | 123篇 |
2013年 | 682篇 |
2012年 | 149篇 |
2011年 | 127篇 |
2010年 | 111篇 |
2009年 | 92篇 |
2008年 | 112篇 |
2007年 | 110篇 |
2006年 | 134篇 |
2005年 | 94篇 |
2004年 | 99篇 |
2003年 | 74篇 |
2002年 | 89篇 |
2001年 | 104篇 |
2000年 | 109篇 |
1999年 | 109篇 |
1998年 | 86篇 |
1997年 | 69篇 |
1996年 | 69篇 |
1995年 | 59篇 |
1994年 | 56篇 |
1993年 | 68篇 |
1992年 | 74篇 |
1991年 | 79篇 |
1990年 | 67篇 |
1989年 | 61篇 |
1988年 | 49篇 |
1987年 | 53篇 |
1986年 | 53篇 |
1985年 | 63篇 |
1984年 | 55篇 |
1983年 | 58篇 |
1982年 | 40篇 |
1981年 | 33篇 |
1980年 | 33篇 |
1979年 | 40篇 |
1978年 | 35篇 |
1977年 | 30篇 |
1976年 | 32篇 |
1975年 | 28篇 |
1974年 | 33篇 |
1973年 | 27篇 |
排序方式: 共有4556条查询结果,搜索用时 15 毫秒
1.
2.
An empirical analysis of 3,334 state and local television newsstories in 10 cities clarifies the reluctance of commercialtelevision newscasters to cover state government. Contrary towhat many television news directors assert, television's minimalattention to state government cannot be attributed to an allegednegative relationship between state government and newscastratings. Rather, it appears to stem from the high cost of obtainingfilmed coverage of state government in a timely fashion. 相似文献
3.
4.
Practitioners and researchers have long been interested in achieving the highest response rate within resource constraints on their mailed surveys. Achieving this high response rate typically has required the selection of the right mix of response-facilitating techniques. The selection decisions were generally made under the assumption that the response-facilitating techniques act independently of one another. The authors have examined the validity of this independence assumption by identifying the major response facilitators in use and then analyzing the results of 531 independent mail survey studies. The authors conclude that major facilitators do not function independently. In fact, it was found that significant joint action interactive effects on response rates do exist. Practitioners and researchers who are faced with the survey design decisions of choosing response facilitators can receive assistance by reviewing the results of this diverse collection of reported experiences. 相似文献
5.
Putman Breanna J. Gasca Maria Blumstein Daniel T. Pauly Gregory B. 《Urban Ecosystems》2019,22(6):1071-1081
Urban Ecosystems - Urbanization-induced habitat loss and alteration causes significant challenges for the survival of many species. Identifying how species respond to urbanization can yield... 相似文献
6.
T. H. M. Abouelmagd A. A. E. Ahmed Enayat M. Abd Elrazik Mahmoud M. Mansour A-Hadi N. Ahmed 《统计学通讯:理论与方法》2019,48(12):2904-2916
In this paper, a comparison between the life distribution of a new unit with that of a used unit in the increasing convex order is made leading to a new class of life distributions which we call “new better than used in convex ordering of second order”. This class includes as subclasses the NBU and the NBUC and is a subclass of the NBUCA class. Preservation properties under convolution, random maxima, mixing and formation of coherent structures are established. Stochastic comparisons of the excess lifetime when the inter-arrival times belong to the NBUC(2) class are developed. Some applications of Poisson shock models and a test of exponentiality against NBUC(2) alternative are presented. 相似文献
7.
Brizzi Francesco Birrell Paul J. Plummer Martyn T. Kirwan Peter Brown Alison E. Delpech Valerie C. Gill O. Noel De Angelis Daniela 《Lifetime data analysis》2019,25(4):757-780
Lifetime Data Analysis - CD4-based multi-state back-calculation methods are key for monitoring the HIV epidemic, providing estimates of HIV incidence and diagnosis rates by disentangling their... 相似文献
8.
Kranjac Ashley W. Denney Justin T. Kimbro Rachel T. Moffett Brady S. Lopez Keila N. 《Population research and policy review》2019,38(3):347-369
Population Research and Policy Review - The literature on neighborhoods and child obesity links contextual conditions to risk, assuming that if place matters, it matters in a similar way for... 相似文献
9.
Nicky J. Newton Preet K. Chauhan Shauna T. Spirling Abigail J. Stewart 《Journal of women & aging》2019,31(4):286-303
Retirement is a complex life transition. Women’s retirement, like their work lives, may be further complicated, for example, by family or financial obligations; they may feel forced to retire or to continue working or feel they have the choice to do so. This study examines the role of voluntary versus involuntary retirement or continued work participation among retirement-age women; specifically, the relationships between choice, work status, and well-being. Compared to women forced to retire, women who chose retirement or continuing to work had higher levels of life satisfaction. Findings highlight the importance of examining retirement within the life course context. 相似文献
10.
Social Indicators Research - Income and hours worked are insufficient to measure job quality yet these domains dominate literature aimed at understanding its relationship with wellbeing. More so,... 相似文献