全文获取类型
收费全文 | 20340篇 |
免费 | 333篇 |
国内免费 | 2篇 |
专业分类
管理学 | 2758篇 |
民族学 | 84篇 |
人口学 | 1699篇 |
丛书文集 | 94篇 |
教育普及 | 3篇 |
理论方法论 | 1742篇 |
综合类 | 306篇 |
社会学 | 9894篇 |
统计学 | 4095篇 |
出版年
2023年 | 125篇 |
2020年 | 268篇 |
2019年 | 408篇 |
2018年 | 462篇 |
2017年 | 661篇 |
2016年 | 492篇 |
2015年 | 370篇 |
2014年 | 476篇 |
2013年 | 3828篇 |
2012年 | 617篇 |
2011年 | 547篇 |
2010年 | 446篇 |
2009年 | 402篇 |
2008年 | 483篇 |
2007年 | 479篇 |
2006年 | 479篇 |
2005年 | 427篇 |
2004年 | 358篇 |
2003年 | 313篇 |
2002年 | 357篇 |
2001年 | 460篇 |
2000年 | 431篇 |
1999年 | 413篇 |
1998年 | 292篇 |
1997年 | 268篇 |
1996年 | 330篇 |
1995年 | 318篇 |
1994年 | 299篇 |
1993年 | 342篇 |
1992年 | 351篇 |
1991年 | 329篇 |
1990年 | 361篇 |
1989年 | 311篇 |
1988年 | 298篇 |
1987年 | 278篇 |
1986年 | 262篇 |
1985年 | 253篇 |
1984年 | 280篇 |
1983年 | 219篇 |
1982年 | 212篇 |
1981年 | 165篇 |
1980年 | 199篇 |
1979年 | 214篇 |
1978年 | 168篇 |
1977年 | 162篇 |
1976年 | 155篇 |
1975年 | 170篇 |
1974年 | 121篇 |
1973年 | 110篇 |
1972年 | 108篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
291.
Papademetriou DG 《International migration (Geneva, Switzerland)》1984,22(4):265-279
This article reviews the background of the proposed Immigration and Reform Act (also known as the Simpson-Mazzoli bill), which seeks to overhaul US immigration law for the first time since 1952. This bill is consistent with President Reagan's hard line on border enforcement and mandates stiff penalties for those who transport illegal aliens for commercial advantage or private profit. It further offers Mexico preferential treatment in immigration (40,000 additional visas/year). It includes an amnesty program to offer legal status to qualified illegal residents. The bill directs the President to develop a secure national worker identification system and would create a large-scale temporary foreign agricultural program for perishable commodities. Agricultural workers' families would not be eligible to accompany them unless they also obtain temporary visas. Foreign temporary workers, employable only in cases where local domestic workers are not available, must be provided with wages and working conditions equal to those prevailing among domestic workers. Stiff penalties are stipulated for employers who fail to abide with the terms of the program. In the author's opinion, this bill fails to appreciate the global character of international migration and its complexity. It relects a fundamental ambivalence about a strictly controlled main gate versus a back door approach to immigration as well as the conflicting images of the US as a nation of immigrants versus the historical reality of American nativism and xenophobia. Needed are comprehensive initiatives whose mutually reinforcing components can address the multiple dimensions of the immigration problem within a framework that does not ignore workers who have contributed to the economic well-being of the US, regardless of their legal status. 相似文献
292.
Sloan DG 《Sociological focus》1984,17(1):77-79
Kelly and Cutright (1983), using regression techniques, conclude that birth control is among the more important determinants of Swedish illegitimacy. To derive this conclusion, they use changes in the marital fertility of wives aged 35-39 as a proxy for birth control. They maintain that annual change in the marital fertility rate of wives aged 35-39 is not likely to be greatly influenced by annual change in factors other than birth control. The "argument" appears to derive from the "desired family size" model of childbearing--a basic assumption of social demography. In it simplest form it states that most couples do not practice birth control until they reach a preconceived goal, or desired family size. It thus implies that a change in family size preferences will most affect the birth control practices of the oldest reproductive age groups. The simple form of the model has been questioned by the failure of Western couples to reproductively compensate for a major proportion of their child deaths, by the proportions of Western couples who say they would have preferred larger families than they actually had, by the predictive inadequacy of family size preferences, and by suggestions that age may be the more important determinant of reproduction. As a result some demographers now concede its inadequacy. Others are trying to relax its assumptions, with as yet problematic success. Essentially every Western fertility decline to date has been characterized by an increasing concentration of childbearing in the youngest age groups. In discussing this pattern social demographers have maintained that it could only have come about by a decline in family size preferences. This then is the standard argument supporting Kelly and Cutright's proxy for birth control. The authorities who offer it generally ignore the difficulties with the desired family size model and simply assert without justification that couples do in fact conform to it. Data on the age patterns of chronic disease and on the reproductive effects of environmental stressors suggest that the modern age pattern of fertility could also be produced by a deteriorating environment. Kelly and Cutright are incorrect in asserting that factors other than voluntary birth control could not be responsible for changes in fertility at ages 35-39. At best they may argue that their proxy is uniquely definitive provided that the desired family size model can be saved and provided the health of Western populations has not been compromised by technological change. At issue is a debate between what Dunlap calls the human exemptionalist and the ecological world views. 相似文献
293.
From time to time during social encounters, people look at one another in the region of the eyes, and sometimes their eyes meet to make eye-contact. According to Argyle and Dean (1965), eye-contact in dyadic encounters signals the intimacy of the interaction and is controlled largely by the competing approach and avoidance forces that motivate the pair. In the present paper, new analyses are reported of three published experiments that were designed originally to test aspects of the intimacy model and it is shown that the duration of eye-contact is no more than a chance product of how long the two subjects look individually. Looking and not eye-contact, it is argued, should be the basis for models of visual interaction, and the intimacy model is ill-founded conceptually; the role of emotion in gaze has been overstressed at the expense of the concept of information; and the most important aspect of vision is in any case not looking and eye-contact but visual access to the whole person. The more cueless the encounter—that is, the fewer the social cues from vision and all the other senses combined—the greater the psychological distance; and the greater the psychological distance, the more task-oriented and depersonalized the content of what people say and, in turn, the less spontaneous their style of speech and the less likely a debate to end in compromise.Research for this article was sponsored by the Social Science Research Council of Great Britain. 相似文献
294.
Serious mental health problems exist within the Chinese population of the United States. This article describes one center's attempt to meet the psychiatric needs of both nonpsychotic and psychotic Chinese patients through bilingual, culturally relevant treatments. 相似文献
295.
296.
Blank RH 《The Cornell journal of social relations》1984,17(2):1-19
The biotechnical "revolution" has fast come upon us. It promises to produce both substantial benefits and difficult dilemmas for individuals and society. Despite the growing attention being paid to biotechnology, a major unanswered question is who shall control the development and use of the powerful array of human genetic and reproductive innovations. Should the decisions be left to individual consumers and private industry or should they be made by the government or other social institutions? After briefly reviewing development in human genetics and reproduction and describing trends toward commercialization of them, this article discusses the dilemmas these trends raise for a democratic society. It argues for the urgent need to delineate societal goals and priorities for the future and for technology assessment as early as possible in the developmental process. The article concludes by presenting some examples of the social policy problems now emerging. 相似文献
297.
298.
The influence of child spacing on child survival 总被引:1,自引:0,他引:1
Sweemer CD 《Population studies》1984,38(1):47-72
Summary This study evaluates the strength of the influence of spacing on child survival. Data related to a traditional culture (Punjab) in which almost all children are breast-fed up to the age of 17 months. An initial pregnancy history survey, subsequent four years updating through continuous monitoring of vital events and a second cross-sectional pregnancy history survey at the mid-point provided a file containing information on pregnancies and survival of children of 5,018 women. The analysis first looks at the correlation between the lengths of the preceding and subsequent intervals of index children, then examines whether this correlation was related to the repeated pattern of child death or survival. Next, the influence of the duration of the preceding interval on the survival of the index child in general and after accounting for the fate of the preceding child were considered. Then the influence of the length of the subsequent interval on the survival of the index child after conception and after the birth of the next child were studied. Lastly, regression analyses with preceding and subsequent intervals as independent variables and age-specific survival or death as the dependent variable were performed. 相似文献
299.
300.