全文获取类型
收费全文 | 5194篇 |
免费 | 103篇 |
专业分类
管理学 | 687篇 |
民族学 | 26篇 |
人口学 | 528篇 |
丛书文集 | 20篇 |
教育普及 | 1篇 |
理论方法论 | 495篇 |
综合类 | 60篇 |
社会学 | 2414篇 |
统计学 | 1066篇 |
出版年
2023年 | 32篇 |
2021年 | 51篇 |
2020年 | 91篇 |
2019年 | 117篇 |
2018年 | 130篇 |
2017年 | 198篇 |
2016年 | 145篇 |
2015年 | 82篇 |
2014年 | 133篇 |
2013年 | 794篇 |
2012年 | 162篇 |
2011年 | 146篇 |
2010年 | 124篇 |
2009年 | 109篇 |
2008年 | 140篇 |
2007年 | 129篇 |
2006年 | 149篇 |
2005年 | 113篇 |
2004年 | 112篇 |
2003年 | 77篇 |
2002年 | 98篇 |
2001年 | 131篇 |
2000年 | 123篇 |
1999年 | 132篇 |
1998年 | 101篇 |
1997年 | 86篇 |
1996年 | 94篇 |
1995年 | 68篇 |
1994年 | 61篇 |
1993年 | 87篇 |
1992年 | 89篇 |
1991年 | 99篇 |
1990年 | 79篇 |
1989年 | 78篇 |
1988年 | 61篇 |
1987年 | 68篇 |
1986年 | 63篇 |
1985年 | 75篇 |
1984年 | 66篇 |
1983年 | 69篇 |
1982年 | 44篇 |
1981年 | 41篇 |
1980年 | 37篇 |
1979年 | 48篇 |
1978年 | 38篇 |
1977年 | 35篇 |
1976年 | 35篇 |
1975年 | 32篇 |
1974年 | 41篇 |
1973年 | 29篇 |
排序方式: 共有5297条查询结果,搜索用时 15 毫秒
61.
The impact of immigration on unemployment in Canada is examined for the period 1983-1985. The authors attempt to construct a balance sheet of immigration in terms of labor supply and demand. They conclude that immigrants create more jobs than they fill, and that their net effect on the employment situation is positive. (SUMMARY IN FRE AND SPA) 相似文献
62.
Saignes T 《Latin American population history newsletter》1987,(13):16-21
The author describes and evaluates some little-known sources of data on the Southern Andes for the period from the sixteenth to the eighteenth century. 相似文献
63.
64.
65.
McGivney WT 《Physician executive》1991,17(5):41-43
Technologies with significant implications for expenditures continue to reach the health care system. These technologies range from orphan drugs/biologicals used to treat rare diseases to balloons used to treat the common occurrence of benign prostatic hyperplasia (BPH) in aging men. Because payment for these technologies can represent a serious financial drain on third-party payers, utilization has to be carefully evaluated, monitored, and controlled. 相似文献
66.
McGivney WT 《Physician executive》1991,17(2):30-31
The term "investigational" has become the fulcrum upon which coverage decisions turn. All third-party payers, including the federal government, use varying definitions of the term for the purpose of excluding treatments from coverage for payment. Unfortunately, no consistent definition of the term is available to payers to guide them in their coverage decisions. 相似文献
67.
McGivney WT 《Physician executive》1991,17(1):36-38
Coverage decisions by third-party payers are relying more and more heavily on the conclusions of technology assessment programs about the safety and effectiveness of technologies applied in specific clinical situations. Assessment programs vary markedly in the sophistication and rigor of their methodology. Payers differ as to how such assessment information is integrated into their decision-making processes. Finally, coverage decisions about a specific technology can vary widely across the country. 相似文献
68.
Assaultive behavior. Does provocation begin in the front office? 总被引:3,自引:0,他引:3
1. Provocation is an important risk predictor because these issues can be recognized, assessed, and appropriate interventions can be implemented to reduce the associated risks. It is only by the reduction of such "non-fixed" risk factors that any reduction of assaults can be accomplished. 2. Involuntary admission, patients with dementia or organic brain disorder, physical or verbal limits, staff attitude, denial of the possibility of assaults, and the educational level and clinical experience of the staff may help provoke an assaultive episode. 3. An important step is assessing the assault to identify provocation due to certain medical causes, and to document the extent of degeneration in patients with dementia or organic brain disorder. Medical intervention would be indicated and would appropriately address the causes of some violent episodes. 相似文献
69.
"The aim of this paper is to examine the effects of the work permit today [in the United Kingdom], using official data. It first reviews the operation of the [labor migration] system and describes the main schemes incorporated. Then, it uses data for 1984-88 to describe the general characteristics of labor immigration through the schemes. Finally, by means of a small random sample of applications and issues, it presents details on particular aspects of the immigration. It demonstrates that current labour immigration through the system is selective: most of those entering with long-term permits are highly skilled, well paid, and moving within the internal labor markets of large transnational corporations." (SUMMARY IN FRE AND SPA) 相似文献
70.