全文获取类型
收费全文 | 12007篇 |
免费 | 190篇 |
国内免费 | 1篇 |
专业分类
管理学 | 1477篇 |
民族学 | 55篇 |
人才学 | 3篇 |
人口学 | 1091篇 |
丛书文集 | 57篇 |
理论方法论 | 1028篇 |
综合类 | 103篇 |
社会学 | 5650篇 |
统计学 | 2734篇 |
出版年
2023年 | 58篇 |
2022年 | 65篇 |
2021年 | 65篇 |
2020年 | 174篇 |
2019年 | 220篇 |
2018年 | 324篇 |
2017年 | 434篇 |
2016年 | 279篇 |
2015年 | 235篇 |
2014年 | 287篇 |
2013年 | 2219篇 |
2012年 | 418篇 |
2011年 | 316篇 |
2010年 | 289篇 |
2009年 | 212篇 |
2008年 | 253篇 |
2007年 | 255篇 |
2006年 | 261篇 |
2005年 | 246篇 |
2004年 | 194篇 |
2003年 | 207篇 |
2002年 | 216篇 |
2001年 | 321篇 |
2000年 | 288篇 |
1999年 | 269篇 |
1998年 | 205篇 |
1997年 | 169篇 |
1996年 | 219篇 |
1995年 | 190篇 |
1994年 | 199篇 |
1993年 | 168篇 |
1992年 | 201篇 |
1991年 | 213篇 |
1990年 | 196篇 |
1989年 | 170篇 |
1988年 | 193篇 |
1987年 | 179篇 |
1986年 | 142篇 |
1985年 | 176篇 |
1984年 | 180篇 |
1983年 | 156篇 |
1982年 | 122篇 |
1981年 | 99篇 |
1980年 | 97篇 |
1979年 | 121篇 |
1978年 | 93篇 |
1977年 | 82篇 |
1975年 | 63篇 |
1974年 | 67篇 |
1973年 | 62篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
151.
Uttley S 《Journal of social policy》1984,13(4):447-465
Industrialization, technological change and overall economic development are often cited as important factors in the development of welfare states. This article examines the importance of cycles in economic activity and cycles in technological innovation to enhancing our understanding of welfare. The history of technological change in health-care services is used to illustrate the argument. 相似文献
152.
Using judgments obtained in interviews with 33 Massachusetts physicians, the annual statewide volume of expenditures incurred for defensive medical reasons in 1982 was estimated to be $1.0 billion, 12% of all medical care expenditures. Estimates for the nation were $37 billion, 14% of expenditures. Nationally, 180,000 cesarean deliveries were thought to be performed for defensive motives. In their own institutions, respondents judged 43% of all skull x-rays following injury to be medically justified, 30% to be defensive medicine, 16% to be placebos, and 11% to be physician misjudgments. In considering the economic and noneconomic costs of medical malpractice procedures, the dollar costs of insurance were considered most serious, followed closely by defensive medicine, unfairness, and poorer relations with patients. Thirty-two percent of the responsibility for the negative aspects of malpractice processes was assigned to lawyers, 21% to physicians, 18% to legislatures and courts, 16% to patients, and 13% to insurance companies. 相似文献
153.
"This article presents estimates of the number of undocumented aliens counted in the 1980 [U.S.] census for each state and the District of Columbia. The estimates, which indicate that 2.06 million undocumented aliens were counted in the 1980 census, are not based on individual records, but are aggregate estimates derived by a residual technique. The census count of aliens (modified somewhat to account for deficiencies in the data) is compared with estimates of the legally resident alien population based on data collected by the Immigration and Naturalization Service in January 1980." Estimates are provided "for each of the states for selected countries of birth and for age, sex, and period of entry categories.... The origins of the undocumented alien population [are described], as well as some of their demographic characteristics. Some of the implications of the numbers and distribution of undocumented aliens are also discussed." This paper was originally presented at the 1984 Annual Meeting of the Population Association of America (see Population Index, Vol. 50, No. 3, Fall 1984, p. 435). 相似文献
154.
155.
Abstract Extract In their recent paper in this journal M. and Carol Vlassoff are to be commended for helping to remedy the dearth of empirical studies on the old-age security motive for children (and particularly sons) in rural areas of developing countries.(1) However, while the questionnaire which they applied to 357 ever-married men in a rural village in Maharashtra state in India is potentially useful, several of the conclusions they derive from it are unwarranted and, if left unquestioned, would undoubtedly have the effect of setting back the serious investigation of the effects of this motive rather than furthering it. The invalid or at least questionable inferences are taken up one at a time in the order of their appearance: 相似文献
156.
157.
The attempt is made to estimate fertility levels in Bangladesh on the basis of data collected during the 1974 Census. In the 1st section attention is directed to providing an overall picture of the demographic situation in the country. Comparisons between the 1961 and 1974 data demonstrates that the 1974 Census data provide consistent results. Factors such as the degree of urbanization, literacy and economic participation rates--considered as indicators of development--all seem to show little progress during the intercensal period. The use of child/women ratios (CWRs) provides plausible evidence of the likelihood of a fertility decline. A decline in CWR values is small for "all areas" but a marked decline can be noted for "urban areas." The recorded mean number of children is less in 1974 than in 1961 for women under age 35 whereas for the older groups the 1974 Census shows higher mean numbers. The Bangladesh Fertility Survey (BFS) data result for the total fertility rate of 6.58 is very close to that estimated for the 1974 Census--6.59. The reverse survival method also indicates that birthrates have been lower during the 1969-1974 period. 相似文献
158.
Hapenney S 《Evaluation and program planning》1978,1(1):79-81
Federal legislation regarding health care in the U.S. has increased rapidly in the past few years. A major law with potential far-reaching effects was enacted as a result of increasing legislation and rising health care costs. This law,The National Health Planning and Resources Development Act,has created a network of over 200 local, mostly nongovernment units, called health systems agencies. These agencies are responsible for areawide health planning, plan implementation, review and approval of federal health care expenditures for local programs, and facilities review. They will affect health and mental health programs at the local level. The article is directed to local health and mental health care providers who will, of necessity, deal directly with the local HSA's. 相似文献
159.
The Use of Vignettes in Survey Research 总被引:20,自引:0,他引:20
160.