全文获取类型
收费全文 | 13236篇 |
免费 | 226篇 |
国内免费 | 11篇 |
专业分类
管理学 | 1708篇 |
民族学 | 66篇 |
人才学 | 3篇 |
人口学 | 1248篇 |
丛书文集 | 65篇 |
理论方法论 | 1114篇 |
综合类 | 149篇 |
社会学 | 6083篇 |
统计学 | 3037篇 |
出版年
2023年 | 72篇 |
2022年 | 77篇 |
2021年 | 75篇 |
2020年 | 202篇 |
2019年 | 253篇 |
2018年 | 357篇 |
2017年 | 496篇 |
2016年 | 317篇 |
2015年 | 264篇 |
2014年 | 322篇 |
2013年 | 2436篇 |
2012年 | 469篇 |
2011年 | 361篇 |
2010年 | 315篇 |
2009年 | 237篇 |
2008年 | 284篇 |
2007年 | 286篇 |
2006年 | 287篇 |
2005年 | 280篇 |
2004年 | 224篇 |
2003年 | 227篇 |
2002年 | 239篇 |
2001年 | 353篇 |
2000年 | 315篇 |
1999年 | 295篇 |
1998年 | 221篇 |
1997年 | 189篇 |
1996年 | 240篇 |
1995年 | 203篇 |
1994年 | 219篇 |
1993年 | 184篇 |
1992年 | 214篇 |
1991年 | 220篇 |
1990年 | 209篇 |
1989年 | 191篇 |
1988年 | 212篇 |
1987年 | 195篇 |
1986年 | 158篇 |
1985年 | 196篇 |
1984年 | 194篇 |
1983年 | 173篇 |
1982年 | 136篇 |
1981年 | 114篇 |
1980年 | 107篇 |
1979年 | 124篇 |
1978年 | 97篇 |
1977年 | 85篇 |
1976年 | 64篇 |
1975年 | 65篇 |
1974年 | 68篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
This article examines the origins of physicians and nurses who were admitted as permanent immigrants to the US from 1962-1979. Data are mainly from the Immigration and Naturalization Service. Countries used in the developmental analysis are only those whose population was estimated at 1 million or more as of mid-1979, encompassing 99% of the physicians and 97% of the nurses. Life expectancy at birth is the criterion used to differentiate origin countries by developmental dimension of health status. During the study period, health workers constituted about 30% of immigrants admitted to the US; of these, nurses and physicians constituted 72-82% throughout the study period. The period 1962-1979 has 4 distinct phases, marked by important legislative and/or policy changes; 1) 1962-1965, when the McCarran-Walter Act prevailed; 2) ending in 1968, the 2nd phase covers the transition mandated under the 1965 Immigration Act, which encouraged physician immigration; 3) the 3rd phase, 1969-1976, covers the transition to the 1976 Immigration and Nationality Act amendments; and 4) the 4th stage is 1977-1979. Results show that 1) under the McCarran-Walter Act, North America became the dominant physician source; 2) from 1966-1968, Asia attained dominance as the physician source and became even more predominant after 1968; 3) North America produced relatively few physicians in the early 1970s; 4) Europe produced substantially fewer physicians in the 1970s than in the 1960s; 5) South America, Africa, and Oceania were the lowest contributors of physicians; 6) during the McCarran-Walter years, North America and Europe produced almost 90% of nurses admitted into the US; 7) the 1965 Immigration Act and its aftermath resulted in Asia becoming the dominant source of nurses; 8) prior to the 1965 Immigration Act, Canada generated 20% of the aggregate number of physicians; 9) the Philippines surpassed Canada during the transition and India led after the transition; and 10) Canada supplied 30% of the nurses up through the transition, with the Philippines in the lead 1969-1979. Low health status countries were a relatively minor nurse source. Health status at the origin was a far less significant determinant of physician immigration than that of nurses. English language high and low health status country groups produced substantially more physician and nurse immigrants that their corresponding non-English language counterparts. The US attracted more physicians and nurses from less developed countries than more developed countries after 1968. 相似文献
72.
Y. K. Ng 《Social Choice and Welfare》1989,6(2):87-101
Individual preferences inconsistent with personal welfare caused neither by ignorance nor by a positive consideration for the welfare of others are defined as (welfare) irrational. Sources of irrationality (rigid adherence to moral principles, excessive fear of danger, excessive tempetation of pleasure, revenge, inertia, faulty telescopic faculty, the fallacy of diminishing marginal utility of utility, etc.) are discussed. An evolutionary explanation of irrationality is suggested and some implications for individual decision and social policy indicated.I am grateful to two anonymous referees for comments. 相似文献
73.
74.
The expanding knowledge and skill bases within the interdisciplinary family therapy profession pose a significant challenge for evolving practitioners, at whatever stage along the professional development process they find themselves. This challenge raises a basic question regarding whether there are any constraining forces to the level of eclecticism in practice towards which one can aspire. This paper empirically explores the role played by the personality attributes of the family therapist in facilitating and/or inhibiting one's adherence to a variety of approaches to family practice. 相似文献
75.
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
76.
77.
L S Beeber 《Journal of psychosocial nursing and mental health services》1989,27(10):42-43
It is interesting to note that antidepressants are widely represented in the medications used to treat the anxiety disorders. This has led to speculation about the role of depression, particularly subclinical forms being manifested as anxiety disorders. The specificity of diagnostic categories suggests that, at least for the moment, medications have a very specific and circumscribed role in the treatment of anxiety. This suggests that the difficulties of many anxious patients are not effectively treated with medication or that medication has only a short-term role at best. The next column will review health problems associated with psychotropic treatments for anxiety and discuss strategies for creating a "wedge," ie, introducing adjunct learning experiences along the anxiety gradient in conjunction with pharmacotherapy. 相似文献
78.
Oheneba-sakyi Y 《Sociological perspectives : SP : official publication of the Pacific Sociological Association》1989,32(4):485-500
A comparison of cohorts of ever-married Chanaian women suggests evidence of a fertility transition beginning among younger women and select subgroups. Ghana's crude birth rate declined from a high of 50/1000 population in 1970 to 38.8/1000 in 1985. To ascertain whether marital fertility is now being controlled through conscious attempts to lengthen birth intervals, World Fertility Survey data from 1979-80 on the timing of births among different birth cohorts were analyzed. It was hypothesized that, as a result of the influence of Western values that stress independence from parents and the introduction of compulsory education, cohorts of the mid-1950s and 1960s would be more likely to postpone childbearing, more active in the modern sector of the economy, and more accepting of modern contraceptive usage for birth spacing than women in the 1930-39, 1940-49, and 1950-59 cohorts. For the 1940-49 cohort, it took 10.8 months for 25% to have a birth following 1st marriage, 18.7 months for 50% to have a 1st birth, and 27.4 months for 75% to complete this step. By comparison, these figures for the 1955-64 birth cohort were 9.9, 16.7, and 20.5 months, respectively. The significantly shorter (p 0.01) interval between marriage and 1st birth found among younger women in part reflects rising age at marriage; mean age at 1st marriage was 17.9 years for the 1940 cohort and 21.6 years for the most recent cohort. After the birth of the 1st child, recent cohorts were more likely to wait longer for the 2nd birth. For women born in 1950-64, it took 21.8, 36.7, and 44.6 months for 25%, 50%, and 75%, respectively, to reach parity 2. This pattern of lengthened birth interval beyond the 1st birth was apparent at all parities in the youngest cohort and indicates increasing acceptance of contraception among those who have come of age during a period of rapid social change. 相似文献
79.
Goodwin-gill GS 《The International migration review》1989,23(3):526-546
Not with standing human rights linkages, migrants and refugees are often on the periphery of effective international protection. State sovereignty and self-regarding notions of community are used to deny or dilute substantive and procedural guarantees. Recently, even non- discrimination as a fundamental principle has been questioned, as has the system of refugee protection. This article located both migrants and refugees squarely within the human rights context, contrasting both inalienable rights with the demands of sovereignty, and juxtaposing the 2 in a context of existing and developing international standards. Migration and refugee flows will go on, and the developed world, in particular, must address the consequences - legal, humanitarian, socioeconomic, and cultural. Racism and institutional denials of basic rights daily challenge the common interest. This article shows how the law must evolve, responding coherently to contemporary problems, if the structure of rights and freedoms is to be maintained. 相似文献
80.