全文获取类型
收费全文 | 28811篇 |
免费 | 768篇 |
国内免费 | 1篇 |
专业分类
管理学 | 3955篇 |
民族学 | 116篇 |
人才学 | 1篇 |
人口学 | 2639篇 |
丛书文集 | 135篇 |
教育普及 | 5篇 |
理论方法论 | 2583篇 |
现状及发展 | 1篇 |
综合类 | 353篇 |
社会学 | 14582篇 |
统计学 | 5210篇 |
出版年
2021年 | 169篇 |
2020年 | 396篇 |
2019年 | 547篇 |
2018年 | 633篇 |
2017年 | 888篇 |
2016年 | 686篇 |
2015年 | 515篇 |
2014年 | 684篇 |
2013年 | 5012篇 |
2012年 | 884篇 |
2011年 | 881篇 |
2010年 | 640篇 |
2009年 | 562篇 |
2008年 | 644篇 |
2007年 | 655篇 |
2006年 | 689篇 |
2005年 | 636篇 |
2004年 | 563篇 |
2003年 | 527篇 |
2002年 | 576篇 |
2001年 | 740篇 |
2000年 | 726篇 |
1999年 | 664篇 |
1998年 | 484篇 |
1997年 | 429篇 |
1996年 | 484篇 |
1995年 | 466篇 |
1994年 | 467篇 |
1993年 | 482篇 |
1992年 | 537篇 |
1991年 | 498篇 |
1990年 | 496篇 |
1989年 | 463篇 |
1988年 | 456篇 |
1987年 | 393篇 |
1986年 | 379篇 |
1985年 | 426篇 |
1984年 | 413篇 |
1983年 | 359篇 |
1982年 | 327篇 |
1981年 | 265篇 |
1980年 | 259篇 |
1979年 | 286篇 |
1978年 | 253篇 |
1977年 | 230篇 |
1976年 | 205篇 |
1975年 | 222篇 |
1974年 | 167篇 |
1973年 | 157篇 |
1972年 | 134篇 |
排序方式: 共有10000条查询结果,搜索用时 703 毫秒
291.
Papademetriou DG 《International migration (Geneva, Switzerland)》1989,27(1):5-26
The Immigration Reform and Control Act (IRCA) of 1986 made 4 types of aliens eligible to receive legalization benefits: 1) those who resided "continuously" in the US since January 1, 1982; 2) those who had worked in the US perishable-crop agriculture for 90 "man-days" in specified time periods (Special Agricultural Workers [SAWS]); 3) those who were in the US since before January 1, 1972; and 4) those classified as Cuban/Haitian entrants and who had been in the US since January 1, 1982. Estimates of the number of aliens eligible for legalization, not including SAWS, ranges from 1.834 million to 2.56 million. Estimates of undercounts of undocumented aliens are 10% for those who entered before 1975 and 37.5% for those who arrived after 1975. Other refinements in the estimates of undocumented aliens include adjustments for 1) ethnic group and location, 2) the growth of the undocumented population between the census date and the legalization eligibility date under IRCA, and 3) emigration and deportation rates. Out of the 1,581,800 applicants entered into the Immigration and Naturalization Service (INS) computers (from a total of 2.15 million applicants) as of May 20, 1988, 73.7% were Mexican nationals. Only 5 other countries contributed more than 1%: El Salvador (6.5%), Haiti (2.3%), Guatemala (2.2%), the Philippines (1%), and Colombia (1%). The Mexican percentage was unexpectedly high, perhaps because the legalization had been much more successful in the Southwest than anywhere else in the country. Reasons that Mexicans have a higher legalization participation rate than other nationalities include 1) the distant eligibility date; 2) ethnic differences among non-Mexican nationalities; 3) particularly in the northeast, fears of exposing one's illegal status to INS; 4) the difficulty of information reaching ethnic communities, 5) the reluctance of those already undergoing the naturalization process to risk the legalization process; and 6) the reluctance of employees to admit employment of undocumented aliens. In the end, more than 90% of applicants are expected to be granted temporary resident alien status (and about 70% of agricultural workers), for a total of more than 2 million people. Researchers estimate that 2.5 - 3 million more persons remain in an undocumented status in the US. 相似文献
292.
The authors develop an econometric model to examine the impact of migration on fertility in Greece in the period 1968-1986. In the model, the fertility equation is considered within a simultaneous equation system, and international migration is included as an explanatory factor of both fertility and per capita income. (SUMMARY IN FRE AND SPA) 相似文献
293.
294.
To assess the validity and clinical utility of the marital inventory ENRICH, a discriminant validity study was conducted using a national sample of 5039 married couples. The sample was randomly split in order to form a cross-validation group. ENRICH is a multidimensional scale and two types of analysis were conducted to assess the value of these various scales. Results from discriminant analysis indicated that using either the individual scores or couples' scores, happily married couples could be discriminated from unhappily married couples with 85–95% accuracy. These results were cross-validated with a second sample. Using regression analysis, it was clearly demonstrated that background factors account for little of the variance in discriminating happy from unhappily married couples compared to their relationship dynamics, i.e., scale scores. All ENRICH scales except equalitarian roles proved significant, indicating the validity of a multidimensional inventory. 相似文献
295.
296.
297.
Haley J 《Journal of marital and family therapy》1989,15(2):127-132
According to long-term follow-up studies of people diagnosed schizophrenic, one half to two thirds will become normal and be back in the community after a period of years. With evidence that schizophrenia is reversible, professions involved in social control and those doing therapy face new responsibilities. Therapists can approach psychotic symptoms expecting the person to become normal. The goal is to help people past periods of acute disturbance without doing them long-term harm. 相似文献
298.
Compliments are often viewed primarily as a linear event in which one person expresses approval or admiration of another. Far less attention has been given to the circular nature of compliments and the manner in which they enhance the positions of both the giver and the receiver of the compliment. Therapeutic compliments have proven to be highly effective means of motivating clients, while at the same time increasing therapeutic leverage. This article proposes that compliments should be purposefully given, and that the type of compliment should vary with the stage of therapy and the intended response of the client to the compliment. 相似文献
299.
Breunlin DC Schwartz RC Krause MS Kochalka J Puetz RA Dyke J 《Journal of marital and family therapy》1989,15(4):387-395
Research on family therapy training has produced very little data regarding the kinds of trainees that do best in family therapy training programs. This study attempts to provide some rough and preliminary data on that issue. One hundred and seventy trainees, drawn from seven different structural!strategic training experiences, were evaluated as to how much they learned by taking the Family Therapy Assessment Exercise pre- and posttraining. Their performance was correlated using a hierarchical regression analysis with a number of trainee variables such as amount of conjugal family experience, amount of experience doing family or individual therapy, or prior knowledge of family therapy. The results indicate that, as predicted, conjugal family experience was positively related, and prior knowledge was negatively related to performance. Prior experience doing individual therapy was also positively related to performance. 相似文献
300.
Roberts J Matthews WJ Bodin NA Cohen D Lewandowski L Novo J Pumilia J Willis C 《Journal of marital and family therapy》1989,15(4):397-410
Working with a treatment and observing team at the same time, behind the oneway mirror, offers a variety of ways to: (a) generate multiple realities; (b) work with two different models of family therapy simultaneously; and (c) provide feedback on the teams' own roles, rules and group process. The process that 6 trainees and two supervisors used with T and O teams to examine their own coevolution as a therapeutic system using the Milan model of family therapy and Ericksonian hypnotherapy is described. The article concludes with a discussion of the advantages and pitfalls of this type of dual supervision. 相似文献