全文获取类型
收费全文 | 23041篇 |
免费 | 595篇 |
国内免费 | 1篇 |
专业分类
管理学 | 3300篇 |
民族学 | 115篇 |
人才学 | 3篇 |
人口学 | 2338篇 |
丛书文集 | 125篇 |
教育普及 | 1篇 |
理论方法论 | 2221篇 |
现状及发展 | 1篇 |
综合类 | 261篇 |
社会学 | 11238篇 |
统计学 | 4034篇 |
出版年
2023年 | 132篇 |
2021年 | 108篇 |
2020年 | 330篇 |
2019年 | 443篇 |
2018年 | 502篇 |
2017年 | 714篇 |
2016年 | 579篇 |
2015年 | 390篇 |
2014年 | 517篇 |
2013年 | 3986篇 |
2012年 | 742篇 |
2011年 | 634篇 |
2010年 | 506篇 |
2009年 | 506篇 |
2008年 | 555篇 |
2007年 | 546篇 |
2006年 | 548篇 |
2005年 | 568篇 |
2004年 | 564篇 |
2003年 | 503篇 |
2002年 | 555篇 |
2001年 | 570篇 |
2000年 | 542篇 |
1999年 | 540篇 |
1998年 | 421篇 |
1997年 | 391篇 |
1996年 | 357篇 |
1995年 | 348篇 |
1994年 | 313篇 |
1993年 | 338篇 |
1992年 | 345篇 |
1991年 | 348篇 |
1990年 | 327篇 |
1989年 | 354篇 |
1988年 | 288篇 |
1987年 | 280篇 |
1986年 | 274篇 |
1985年 | 329篇 |
1984年 | 303篇 |
1983年 | 295篇 |
1982年 | 245篇 |
1981年 | 221篇 |
1980年 | 211篇 |
1979年 | 253篇 |
1978年 | 207篇 |
1977年 | 184篇 |
1976年 | 184篇 |
1975年 | 178篇 |
1974年 | 160篇 |
1973年 | 142篇 |
排序方式: 共有10000条查询结果,搜索用时 343 毫秒
191.
This study examines the relationships among personal coping resources, social support, external coping resources, job stressors and job strains in a sample of 110 American Telephone and Telegraph employees undergoing a major organizational restructuring. The study expanded on a model suggested by Ashford (1988) by defining another category of coping resources that employees may draw upon to deal with the stressors and strains which occur during major organizational changes. External coping resources were defined as those which provided employees with a sense of 'vicarious control' in stressful situations. Results indicated that personal coping resources, social support and external coping resources had a direct effect upon job stressor and strain levels. No 'buffering' effect of these coplng resources was found. Hierarchical regression analyses indicated that external coping resources added to the prediction of job stressors and strains even when pertonal coping resources and social support were entered first into the prediction questions. 相似文献
192.
The effects of question order on respondents' ratings of general and specific aspects of community life were assessed using data from separate mail surveys in Montana and Pennsylvania, The samples differed in locale, composition, and size and the relevant questions varied in number, format, and specific focus. Nevertheless, for both data sets the general question was more likely to be answered and more likely to receive positive responses when it was asked after—rather than before—the specific questions. There was some indication that carryover from the specific items to the general question responses were somewhat greater for those questions asked most recently and less for those asked earlier. Implications of these findings are discussed. 相似文献
193.
194.
Thomas Dietz Ann Stirling Frisch Linda Kalof Paul C. Stern Gregory A. Guagnano 《Rural sociology》1995,60(3):533-542
The American diet has changed substantially over the last few decades. These changes provide a test for social theory and have substantial effects on the demand for various food products, thus impacting U.S. agriculture. In this paper a rapidly growing dietary choice—vegetarianism—is explored. Prevalence of various forms of vegetarianism is estimated in a representative sample of a suburban population and factors that influence choice of a vegetarian diet are examined. About 7 percent of the sample report they are vegetarians. The prevalence of vegetarianism is not influenced by age, gender, or education, but individuals holding traditional values are less likely to be vegetarian than others. There also is some evidence mat individuals holding altruistic values are more likely than others to be vegetarians. 相似文献
195.
Making ends meet: perceptions of poverty in Sweden 总被引:1,自引:0,他引:1
B. Halleröd 《International Journal of Social Welfare》1995,4(3):174-189
During the era after the Second World War, Sweden has built a welfare system based on labor market participation and income maintenance. Low unemployment and decent wages are supposed to guarantee people a labor market income or income maintenance, which in turn should provide a proper standard for everyone. However, a rapid increase in unemployment and economic problems have made the future of the Swedish welfare state more uncertain than ever. These circumstances have, among other things, led to the suggestion that Sweden should abandon the income maintenance policy and create a social policy system with the more limited ambition of guaranteeing everyone a minimum income. In that case, one central question must be answered: what constitutes a decent minimum income in today's Sweden? Where should we draw the poverty line under which people will not be forced to live? These questions are central in the current debate. The consensual poverty line method is used in this article to derive a poverty line relevant for today's Sweden. The results shows that more than every fifth household has an income below the consensual poverty line. That is, they have an income that most Swedes would argue is too low to make ends meet. The level of the consensual poverty line was compared with the National Board of Health and Welfare's guidelines for social assistance. The consensual poverty line was shown to be more generous to small households and the norm for social assistance was more generous to larger households. Finally, the expenditure for guaranteeing all Swedish household a minimum income equal to the consensual poverty line was estimated: more than SEK 25 billion per year. The results in the article casts serious doubt on the ability of the Swedish welfare state to secure a decent income to all citizens. 相似文献
196.
Regina Thompson Paul H. Templet John K. Gamman Scott T. McCleary Margaret A. Reams 《Risk analysis》1994,14(5):857-861
The goal of Louisiana's 1990–1991 comparative risk project, also called the Louisiana Environmental Action Plan (LEAP), was to incorporate risk assessment into state environmental planning and policymaking. Scientists, government officials, and citizens were brought together to estimate the relative risk to human health, natural resources, and quality of life posed by 33 selected environmental issues. The issues were then ranked according to their relative estimated risks. It was hoped that this ranking of "comparative risks" would enable state policymakers to target the most important environmental problems and allocate scarce public resources more rationally and efficiently. As a result of the project, the governor issued an Executive Order forming a permanent Public Advisory Committee to continue this type of comparative risk assessment in Louisiana. 相似文献
197.
198.
The problem of determining the number of multi-type protection devices and their locations on electrical supply tree networks with subtree dependency is investigated. The aim is to reduce the amount of inconvenience caused to customers that are affected by any given fault on the networks. An appropriate implementation of tabu search is proposed. We exploit a variable neighborhood and a soft aspiration level, and we embed a data structure and reduction tests into the search to speed up the process. Computational tests are performed on randomly generated electrical tree networks varying in size and branch complexity with encouraging results. 相似文献
199.
Since children, particularly daughters, are among the most important sources of help and support for older Americans, it has been suggested that women's increasing employment will affect filial relations. Empirical evidence on this issue is inconsistent, in part due to the use of nonprobability samples. Few studies have measured effects for men. We attempt to broaden the scope of this question beyond help to the frail elderly by asking whether employment affects filial relations in general. We examine effects of hours employed on telephone contact, visiting, feelings of closeness, filial attitudes, and assistance to biological parents, for an area probability sample of men and women over 40. There are no effects of employment for men or women on contact, closeness, or assistance. For the vast majority of this population sample, contact and assistance involve few hours per week, and thus do not seem to conflict with employment. 相似文献
200.