全文获取类型
收费全文 | 25572篇 |
免费 | 434篇 |
国内免费 | 1篇 |
专业分类
管理学 | 3150篇 |
民族学 | 128篇 |
人才学 | 6篇 |
人口学 | 2370篇 |
丛书文集 | 135篇 |
教育普及 | 2篇 |
理论方法论 | 2296篇 |
现状及发展 | 1篇 |
综合类 | 355篇 |
社会学 | 12373篇 |
统计学 | 5191篇 |
出版年
2023年 | 130篇 |
2021年 | 128篇 |
2020年 | 378篇 |
2019年 | 592篇 |
2018年 | 600篇 |
2017年 | 861篇 |
2016年 | 601篇 |
2015年 | 488篇 |
2014年 | 584篇 |
2013年 | 4424篇 |
2012年 | 841篇 |
2011年 | 753篇 |
2010年 | 614篇 |
2009年 | 568篇 |
2008年 | 686篇 |
2007年 | 688篇 |
2006年 | 616篇 |
2005年 | 557篇 |
2004年 | 540篇 |
2003年 | 496篇 |
2002年 | 517篇 |
2001年 | 607篇 |
2000年 | 518篇 |
1999年 | 497篇 |
1998年 | 424篇 |
1997年 | 386篇 |
1996年 | 394篇 |
1995年 | 369篇 |
1994年 | 332篇 |
1993年 | 362篇 |
1992年 | 415篇 |
1991年 | 397篇 |
1990年 | 376篇 |
1989年 | 352篇 |
1988年 | 336篇 |
1987年 | 318篇 |
1986年 | 309篇 |
1985年 | 326篇 |
1984年 | 337篇 |
1983年 | 309篇 |
1982年 | 266篇 |
1981年 | 214篇 |
1980年 | 258篇 |
1979年 | 263篇 |
1978年 | 206篇 |
1977年 | 211篇 |
1976年 | 188篇 |
1975年 | 194篇 |
1974年 | 158篇 |
1972年 | 125篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
32.
Judith A. Elwood 《The Career development quarterly》1992,41(1):51-54
Often university students are faced with career decisions and seek help from the university counseling center. The pyramid model is a useful tool to assist the counselor and the student in the decision-making process. The metaphor enables the student to understand the tasks that lie ahead in the career counseling process. It is holistic. A case study is included to illustrate the three-dimensional model of career counseling of university students. 相似文献
33.
Abstract Nonmetropolitan (nonmetro) inequality patterns are contrasted with those of metropolitan (metro) areas to assess the utility of neoclassical and restructuring theoretical frameworks. Inequality measures are constructed from March Current Population Surveys for the years 1968–1991. Results indicate that inequality is greater in nonmetro areas than in metro areas. Results of decomposition procedures suggest that the observed inequality is due to a mix of neoclassical and restructuring factors that account for more inequality in metro than nonmetro areas. National policies must take account of metro/nonmetro differences in patterns and sources of inequality. 相似文献
34.
35.
The study reported describes Efe (pygmy) forager one-, two-, and three-year-olds' involvement with males. The Efe of northeastern Zaïre were chosen because their social organization allows us to examine hypotheses based on studies in Western, technologically complex societies about the distinctive role fathers play in the lives of their young children. Behavioral observations of Efe children's day-to-day activities with fathers, men and boys were recorded using a focal subject sampling technique (Altmann, 1974). Two behavioral measures were created to capture the extent to which males were involved with children: Social engagement describes males' involvement with children and social attention describes eavesdropping by children on males' everyday activities. Eight one-year-olds, 7 two-year-olds and 8 three-year-olds were each observed for six, one-hour observation sessions that were distributed evenly over the daylight hours. Data were analyzed using the traditional measure of involvement (e.g., adult males) and using a newly developed measure of the involvement of the average individual (e.g., average adult mate). Comparisons at each of the ages showed that fathers were consistently like other men in the extent to which children participated in social activities with them and watched their activities. Only fathers' level of social engagement declined significantly as children grew older. Boys' role relative to other males became increasingly distinctive as children aged. The findings suggest that Efe fathers may not be unique in the same sense assumed by Western study ideals, and raise questions about the special status given to fathers in Western theory and data. The patterning of mate involvement with children is discussed in terms of Efe community life, and in terms of Efe children's developing understanding of their relationship with fathers and other males. 相似文献
36.
37.
A. F. Bissell 《Journal of applied statistics》1992,19(2):193-210
The fitting of a straight line that must pass through (0, 0) is a frequently encountered application of linear regression. Many computer packages provide a least-squares option sometimes identified as NO INT, or even NOINT, or as ‘suppressing the intercept’. Often these procedures are invalid or do not correspond to the most suitable model. This paper questions the least-squares-line approach and suggests some alternatives. Two measures are proposed for comparing the fit of alternative models. 相似文献
38.
Michael H. LeRoy 《Journal of Labor Research》1992,13(4):371-379
One hundred and sixty-four elite union leaders in the United States completed a survey to assess the condition of the American
labor movement and the factors affecting it. The respondents included high-level international union and state federation
officers, central labor presidents, and 58 shop stewards. This study compares the responses of these labor officials and finds
that they have similar, negative assessments of the condition of the American labor movement. The study also finds that these
leaders agree that the most important factors affecting the labor movement are collective bargaining rights, union leadership,
union member solidarity, and the NLRB. 相似文献
39.
A. R. Tricker 《Journal of applied statistics》1992,19(4):465-471
This paper is concerned with how standard estimation procedures perform in terms of eficiency for non-normal rounded data. Previous research has shown that the loss in eficiency due to rounding normal data is small. However, evidence from the non-normal distribution considered in this paper suggests, if rounding is coarse or the distribution is very skewed the loss in efficiency due to rounding can be considerable. 相似文献
40.