全文获取类型
收费全文 | 13430篇 |
免费 | 278篇 |
国内免费 | 15篇 |
专业分类
管理学 | 1607篇 |
民族学 | 80篇 |
人才学 | 1篇 |
人口学 | 1173篇 |
丛书文集 | 150篇 |
理论方法论 | 1240篇 |
综合类 | 695篇 |
社会学 | 7111篇 |
统计学 | 1666篇 |
出版年
2023年 | 74篇 |
2022年 | 63篇 |
2021年 | 107篇 |
2020年 | 213篇 |
2019年 | 262篇 |
2018年 | 341篇 |
2017年 | 494篇 |
2016年 | 334篇 |
2015年 | 272篇 |
2014年 | 327篇 |
2013年 | 2093篇 |
2012年 | 492篇 |
2011年 | 475篇 |
2010年 | 404篇 |
2009年 | 335篇 |
2008年 | 404篇 |
2007年 | 427篇 |
2006年 | 427篇 |
2005年 | 365篇 |
2004年 | 288篇 |
2003年 | 255篇 |
2002年 | 269篇 |
2001年 | 338篇 |
2000年 | 283篇 |
1999年 | 276篇 |
1998年 | 200篇 |
1997年 | 170篇 |
1996年 | 160篇 |
1995年 | 172篇 |
1994年 | 158篇 |
1993年 | 162篇 |
1992年 | 185篇 |
1991年 | 186篇 |
1990年 | 183篇 |
1989年 | 159篇 |
1988年 | 167篇 |
1987年 | 191篇 |
1986年 | 147篇 |
1985年 | 157篇 |
1984年 | 175篇 |
1983年 | 151篇 |
1982年 | 151篇 |
1981年 | 121篇 |
1980年 | 111篇 |
1979年 | 122篇 |
1978年 | 95篇 |
1977年 | 79篇 |
1976年 | 93篇 |
1975年 | 109篇 |
1974年 | 84篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
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
102.
David L. Weakliem 《Sociological Forum》1989,4(2):203-226
This paper tests some predictions derived from Williamson's transaction cost theory of the organization of work, which holds that the form of the employment relationship is determined largely by the idiosyncrasy of work—that is, the nature of skills and knowledge used in production. It examines the occurrence of theoretically relevant provisions in collective bargaining agreements in the United States and finds they are related to a contract-level proxy for idiosyncrasy (based on bargaining structure) as predicted by the theory. An analysis of an individual-level variable, the difficulty of finding a comparable job, provides some additional support. Finally, several alternative explanations of the results are considered, and it is argued that none are consistent with the evidence. The analysis thus finds strong, if necessarily provisional, support for the theory. 相似文献
103.
C. L. Sheng 《Theory and Decision》1989,26(2):175-195
This paper clarifies and interprets some basic quantitative concepts of value, utility and utility function from a utilitarian point of view. First, I discuss the question as to whether value is objective or subjective. I hold that value is subjective and statistical in nature (although from the various subjective values of a certain object a norm can usually be obtained). Second, I emphasize the distinction between use value and exchange value in relation to utility. Third, I propose a law of diminishing incremental interest, which refers to the incremental (marginal) utility of money. Fourth, I identify the utility of money with the von Neumann-Morgenstern utility. Fifth, I question the necessity of the usual normalization of utility functions and the restricted linear transformation (and the consequent concept of strategic equivalence). Sixth, I discuss in detail the terminal values and utilities of a utility function from a philosophical rather than mathematical point of view, particularly the boundedness of a utility function and the magnitudes of V
0 and U
0. Finally, I conclude that, in order to be able to have interpersonal comparisons of utility, utility should have the same dimension as value rather than no dimension, and the normalization problem should be reconsidered in the light of terminal values and utilities. 相似文献
104.
105.
From making to being the excuse: An analysis of deception and verbal/nonverbal issues 总被引:1,自引:0,他引:1
Excuse-making is defined, and the issues of deception and verbal/nonverbal presentations are discussed in regard to the excuse process. Subsequently, the deception and verbal/nonverbal issues are described in greater detail in the context of whether the excuse occurs temporally after a negative outcome (retrospective), before a negative outcome (anticipatory), or as part of the characterological makeup of the person (incorporated). Going from retrospective to anticipatory to incorporated excuses, it is concluded that the role of nonverbal factors increases. Likewise, in the progression from making to being the excuse, it is argued that self- and other-deception also become more pervasive. 相似文献
106.
This article discusses the role of migration in relieving population pressures, thus making continuing development possible, using small nations in the Caribbean and the South Pacific as examples. The Caribbean islands and many Pacific islands have used out-migration to ease population pressures in this century. Surplus labor has been emerging in various Caribbean nations, independent of the international marketing problems of plantation agriculture. Rural populations alienated from plantations have had to make do on questionable and/or remote land. Population surpluses appear to originate in rural areas, but little evidence exists to suggest that those surpluses are the basis for the emigration patterns of the Caribbean islands. Emigration does not solve population problems because when ambitious, skilled workers leave their country, their actions have little to do with the existence of domestic surplus labor and their leaving may do little to facilitate domestic labor absorption. Thus, if mini-states wish to sustain their hopes of economic expansion, they must find the means to employ their surplus labor. Since mainly skilled migrants leave, their going may actually slow development and retard opportunities for labor absorption. Population movements internal to the Caribbean region may further complicate surplus labor and/or population problems. If protective entry requirements impede normal inter-island relations, they may interfere with developmental processes. In general, migration is not a feasible strategy for population control for small island nations. While temporary migration has a more positive impact than other forms of migration, problems do exist. For example, temporary migration 1) can impose significant economic costs on the source-country, and 2) may result in the source country being unable to capitalize on its initial investment in training and education of temporary migrants. In conclusion, import substitution through cooperation between small island nations, production for export where feasible, and more attention to more sophisticated international service linkages hold a better prospect for material progress than relying on the export of surplus populations. 相似文献
107.
A face-to-face survey conducted in 1984 with a sample of 1491residents of the Detroit metropolitan area (including an oversampleof older adults) and a reinterview of a random subset of theserespondents by telephone were used to compare the two modesof data collection across two age levels. Except for a tendencytoward a disproportionately large number of DK answers and adisproportionately large amount of interviewer assistance onthe telephone, respondents 60 years of age and older did notexhibit larger mode differences than did respondents under 60.For both age groups, response distributions were rather similar,suggesting little effect of mode. Likewise, response style differedlittle by mode, while a higher proportion of missing data (i.e.,"I don't know" answers) was given on the telephone. The responserate for the telephone reinterview was 90%, somewhat lower forolder than younger persons. The findings support the feasibilityof using the telephone for reinterviewing older adults. 相似文献
108.
"Net undercount rates in the U.S. decennial census have been steadily declining over the last several censuses. Differential undercounts among race groups and geographic areas, however, appear to persist. In the following, we examine and compare several methodologies for providing small area estimates of census coverage by constructing artificial populations. Measures of performance are also introduced to assess the various small area estimates. Synthetic estimation in combination with regression modelling provide the best results over the methods considered. Sampling error effects are also simulated. The results form the basis for determining coverage evaluation survey small area estimates of the 1900 decennial census." 相似文献
109.
Hunt CL 《Sojourn (Singapore)》1992,7(2):208-222
"The Philippines has two characteristics which differentiate if from other countries in Southeast Asia. It is the only predominantly Christian country in the region and it has one of the highest rates of population growth. Non-Catholic Christians make up only about 9 per cent of the population compared with around 82 per cent for Roman Catholics. Given the Catholic Church objections to both contraception and abortion, it is not illogical to hypothesize a relation between the religious composition of the population and its rate of population growth." 相似文献
110.
Continued economic stagnation, civil unrest, rural-urban migration, and a series of natural disasters have impeded efforts in the Sudan to integrate women into the development process. Although the Four-Year (1988-1989 to 1991-92) Salvation, Recovery, and Development Programs Plan does not explicitly addresses women's issues, its emphasis on food security, appropriate technology for the agricultural sector, small-scale industries and handicrafts, balanced regional development, and the needs of the poorest 20% of the population guarantees that women will be major recipients. There remains a need, however, to increase women's participation in the development planning process and to base projects on reliable data on women's economic activities. More successful in defining women's needs have been community development projects--Western Savannah Development Corporation, Blue Nile Integrated Rural Development Project, Nuba Mountain Project, and Jebel Marra Rural Development Project--that combine income generation, social welfare, and agricultural research. It is recommended that all such large integrated rural development or agricultural projects allot funds specifically for women's activities and ensure coordination with women's organizations to avoid duplication and identify areas of greatest need. Also urged is the development of appropriate technologies that will alleviate women's double burden of poverty and household chores and address the inequitable distribution of income. Establishment of a women's bureau for women's affairs and development within the National Planning Department would facilitate project formulation and evaluation. In need of change if women in development projects in the Sudan are to be successful are laws that limit female land ownership and practices that deny women loans and credit. 相似文献