全文获取类型
收费全文 | 5370篇 |
免费 | 112篇 |
专业分类
管理学 | 703篇 |
民族学 | 24篇 |
人口学 | 534篇 |
丛书文集 | 21篇 |
教育普及 | 1篇 |
理论方法论 | 518篇 |
综合类 | 59篇 |
社会学 | 2553篇 |
统计学 | 1069篇 |
出版年
2023年 | 34篇 |
2021年 | 51篇 |
2020年 | 95篇 |
2019年 | 121篇 |
2018年 | 133篇 |
2017年 | 205篇 |
2016年 | 151篇 |
2015年 | 86篇 |
2014年 | 141篇 |
2013年 | 814篇 |
2012年 | 169篇 |
2011年 | 156篇 |
2010年 | 131篇 |
2009年 | 112篇 |
2008年 | 148篇 |
2007年 | 141篇 |
2006年 | 162篇 |
2005年 | 120篇 |
2004年 | 115篇 |
2003年 | 83篇 |
2002年 | 105篇 |
2001年 | 135篇 |
2000年 | 132篇 |
1999年 | 139篇 |
1998年 | 108篇 |
1997年 | 90篇 |
1996年 | 96篇 |
1995年 | 69篇 |
1994年 | 62篇 |
1993年 | 88篇 |
1992年 | 90篇 |
1991年 | 100篇 |
1990年 | 79篇 |
1989年 | 79篇 |
1988年 | 62篇 |
1987年 | 71篇 |
1986年 | 62篇 |
1985年 | 75篇 |
1984年 | 67篇 |
1983年 | 70篇 |
1982年 | 44篇 |
1981年 | 41篇 |
1980年 | 40篇 |
1979年 | 51篇 |
1978年 | 38篇 |
1977年 | 33篇 |
1976年 | 35篇 |
1975年 | 32篇 |
1974年 | 40篇 |
1973年 | 29篇 |
排序方式: 共有5482条查询结果,搜索用时 15 毫秒
71.
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
72.
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
73.
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
74.
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
75.
"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
76.
77.
78.
Using the 1980 and 1990 Public Use Microdata Samples, we find that labor market outcomes associated with English proficiency vary with respect to gender. For example, a synthetic cohort analysis provides evidence of gender-related differences in Hispanic workers' English skill acquisition. Moreover, we observe that Hispanic women face a lower English deficiency earnings penalty that rises more sharply with education than the penalty obtained by their otherwise similar male peers. Finally, English fluency appears to serve as a stronger occupational sorting mechanism for women than men. ( JEL J3, J1) 相似文献
79.
The Chittagong Healthy City Project was carried out in late 1994 in Chittagong, Bangladesh. This paper presents findings of an evaluation of the project based upon internationally generated process indicators related to the institutional aspects of the project. The following issues are discussed with regard to project implementation: the institutional organization of local authorities, institutions' conceptual understanding of the project, formal insertion of the project into public authorities' activities, institutional leadership of the project, central-local relations, the lack of interministerial coordination, the project's office, international projects, and community organization. Giving consideration to these issues may help program planners detect problems in forthcoming projects prior to their implementation. 相似文献
80.
SupposeL(X) is the law of a positive random variableX, andZ is positive and independent ofX. Admissible solution pairs (L(X),L(Z)) are sought for the in-law equation $\hat X \cong X o Z$ °Z, where $L\left( {\hat X} \right)$ is a weighted law constructed fromL(X), and ° is a binary operation which in some sense is increasing. The class of weights includes length biasing of arbitrary order. When ° is addition and the weighting is ordinary length biasing, the class of admissibleL(X) comprises the positive infinitely divisible laws. Examples are given subsuming all known specific cases. Some extensions for general order of length-biasing are discussed. 相似文献