全文获取类型
收费全文 | 4918篇 |
免费 | 133篇 |
专业分类
管理学 | 698篇 |
民族学 | 30篇 |
人才学 | 1篇 |
人口学 | 464篇 |
丛书文集 | 39篇 |
教育普及 | 1篇 |
理论方法论 | 568篇 |
综合类 | 55篇 |
社会学 | 2584篇 |
统计学 | 611篇 |
出版年
2021年 | 30篇 |
2020年 | 68篇 |
2019年 | 85篇 |
2018年 | 86篇 |
2017年 | 136篇 |
2016年 | 108篇 |
2015年 | 80篇 |
2014年 | 92篇 |
2013年 | 950篇 |
2012年 | 149篇 |
2011年 | 176篇 |
2010年 | 114篇 |
2009年 | 142篇 |
2008年 | 151篇 |
2007年 | 151篇 |
2006年 | 169篇 |
2005年 | 149篇 |
2004年 | 141篇 |
2003年 | 131篇 |
2002年 | 136篇 |
2001年 | 93篇 |
2000年 | 103篇 |
1999年 | 87篇 |
1998年 | 69篇 |
1997年 | 74篇 |
1996年 | 92篇 |
1995年 | 70篇 |
1994年 | 68篇 |
1993年 | 63篇 |
1992年 | 66篇 |
1991年 | 60篇 |
1990年 | 54篇 |
1989年 | 66篇 |
1988年 | 50篇 |
1987年 | 42篇 |
1986年 | 60篇 |
1985年 | 60篇 |
1984年 | 61篇 |
1983年 | 49篇 |
1982年 | 40篇 |
1981年 | 45篇 |
1980年 | 41篇 |
1979年 | 48篇 |
1978年 | 44篇 |
1977年 | 35篇 |
1976年 | 40篇 |
1975年 | 40篇 |
1974年 | 28篇 |
1973年 | 18篇 |
1971年 | 26篇 |
排序方式: 共有5051条查询结果,搜索用时 187 毫秒
161.
162.
Basic characteristics of an assemble-to-order environment make effective master scheduling extremely difficult. Limited resource capacities and dynamic customer end-item demand contribute to the complexity of the master production scheduling problem. To gain flexibility and responsiveness within this system, the master production schedule (MPS) focuses at the component level. This research proposes a master scheduling technique for manufactured components which combines a multiobjective capacitated multi-item/multi-stage lot-sizing model with an interactive multiple objective optimization solution procedure. To evaluate the model's performance as a realistic and practical master scheduling tool, this study focuses on the National Cash Register (NCR) electronics manufacturing facility in Columbia, South Carolina. 相似文献
163.
Morris RJ 《Journal of homosexuality》2006,51(3):225-247
In the long history of the West's encounter with Hawaiian culture, which began in the late 1700s with Captain Cook, translators and translations have often been the tools of intentional falsehood, thus demonstrating the truth of the Italian proverb, Traduttore, traditore ("the translator is a traitor")--particularly with regard to same-sex texts. The standards of truth have often been subverted in translation by the demands of foreign religion, hegemony, business, and academe. This subversion continues to this day in the form of the "missionary mentality" in politics and law. The way out of this situation is a brutally honest cleaning-off of the besmirched Hawaiian texts. 相似文献
164.
Klitzman R 《Journal of homosexuality》2006,51(3):7-32
Use of MDMA and other club drugs has increased among gay men, but questions remain concerning the use, context, and popularity of these drugs; and views of their side effects. We interviewed in-depth 12 gay MDMA users in New York. MDMA had specific appeals to gay men, who often described isolation and stigmatization. Users underwent a period of initiation and social networks often became comprised of greater numbers of other users. Club environments fostered drug use and vice versa. Awareness of potential adverse effects varied and was minimized. Appropriate educational and prevention programs are needed to address these issues, and must take into account the specific contexts of these gay men's lives. 相似文献
165.
Robert Bordone 《经理人》2006,(7):68-70
精明的商业领袖会在冲突中寻找创造价值的时机无论在哪一行,总会有争吵。未按时交货;客户改变主意;合作伙伴不遵守承诺;部门的主管不批准某项预算而且还进行人身攻击。经理们对待这样的冲突和对待其他生意的方式往往是不同的。他们的做法完全不同,就好像解决冲突需要完全不同的方式:要不你获胜,要不我获胜。双 相似文献
166.
The purpose of this study is to examine the reliability of the skin tone measures in the widely used American National Election Studies data collection (AN 相似文献
167.
Colin Thirtle David Hadley Robert Townsend 《Development policy review : the journal of the Overseas Development Institute》1995,13(4):323-348
To meet the [African] crisis one must turn to agricultural-led growth. But, based on historical experience, an agricultural-led strategy must be framed in no less than a twenty-year horizon and must entail a combination of technological innovation, policy reform, and institutional restructuring because each, by itself, is limited. (Eicher, 1989) 相似文献
168.
This study illuminates the association between cigarette smoking and adult mortality in the contemporary United States. Recent studies have estimated smoking-attributable mortality using indirect approaches or with sample data that are not nationally representative and that lack key confounders. We use the 1990–2011 National Health Interview Survey Linked Mortality Files to estimate relative risks of all-cause and cause-specific mortality for current and former smokers compared with never smokers. We examine causes of death established as attributable to smoking as well as additional causes that appear to be linked to smoking but have not yet been declared by the U.S. Surgeon General to be caused by smoking. Mortality risk is substantially elevated among smokers for established causes and moderately elevated for additional causes. We also decompose the mortality disadvantage among smokers by cause of death and estimate the number of smoking-attributable deaths for the U.S. adult population ages 35+, net of sociodemographic and behavioral confounders. The elevated risks translate to 481,887 excess deaths per year among current and former smokers compared with never smokers, 14 % to 15 % of which are due to the additional causes. The additional causes of death contribute to the health burden of smoking and should be considered in future studies of smoking-attributable mortality. This study demonstrates that smoking-attributable mortality must remain a top population health priority in the United States and makes several contributions to further underscore the human costs of this tragedy that has ravaged American society for more than a century. 相似文献
169.
Elizabeth Ackert Robert Ressler Robert Crosnoe 《Journal of marriage and the family》2018,80(5):1210-1224
Integrating family and child data from the Early Childhood Longitudinal Study–Birth Cohort with contextual data from the census, this study examined associations among maternal employment, aspects of communities related to child‐care supply and demand, and the early care and education arrangements of 4 year olds in Mexican‐origin, Black, and White families. Children with employed mothers were more likely to be in informal care arrangements than in early childhood education, regardless of racial/ethnic background. For children in Mexican‐origin families, selection into informal care over early childhood education was more likely in zip codes with greater demand for care as measured by higher female employment. Utilization of parent care versus early childhood education was also more likely for children in Mexican‐origin and Black families in zip codes with higher female employment. Constraints associated with maternal employment thus hindered children from enrolling in early childhood education, and community contexts posed challenges for some groups. 相似文献
170.
In the current investigation, idiosyncratic deals (i-deals; individualized work arrangements) are modeled as differentiated resources that shape leader-member exchange (LMX) relationships in workgroups. We integrate literature on leader-member exchange (LMX) with research on i-deals to argue that employee evaluations of i-deals received from the grantor –typically the leader- enhance employee perceptions of LMX, which in turn become instrumental in generating positive performance outcomes. Furthermore, because workgroup characteristics have potential implications on the relationship between a deal grantor and the deal recipient, drawing upon social identity theory of leadership, we reason that the i-deals-LMX relationship is affected by the overall value congruence among the group members. Cross-level moderated mediation analyses on multi source data obtained from 289 employees nested in 60 workgroups showed that the mediational role of LMX in the i-deals to performance outcomes relationship was weaker in high value congruence groups. 相似文献