全文获取类型
收费全文 | 9811篇 |
免费 | 762篇 |
国内免费 | 393篇 |
专业分类
10966篇 |
出版年
2024年 | 18篇 |
2023年 | 95篇 |
2022年 | 84篇 |
2021年 | 155篇 |
2020年 | 238篇 |
2019年 | 290篇 |
2018年 | 313篇 |
2017年 | 334篇 |
2016年 | 293篇 |
2015年 | 214篇 |
2014年 | 206篇 |
2013年 | 630篇 |
2012年 | 171篇 |
2011年 | 198篇 |
2010年 | 133篇 |
2009年 | 209篇 |
2008年 | 190篇 |
2007年 | 207篇 |
2006年 | 188篇 |
2005年 | 173篇 |
2004年 | 157篇 |
2003年 | 133篇 |
2002年 | 107篇 |
2001年 | 99篇 |
2000年 | 86篇 |
1999年 | 72篇 |
1998年 | 59篇 |
1997年 | 48篇 |
1996年 | 52篇 |
1995年 | 57篇 |
1994年 | 33篇 |
1993年 | 17篇 |
1992年 | 32篇 |
1991年 | 26篇 |
1990年 | 21篇 |
1989年 | 25篇 |
1987年 | 17篇 |
1985年 | 455篇 |
1984年 | 517篇 |
1983年 | 431篇 |
1982年 | 530篇 |
1981年 | 501篇 |
1980年 | 519篇 |
1979年 | 474篇 |
1978年 | 498篇 |
1977年 | 379篇 |
1976年 | 373篇 |
1975年 | 317篇 |
1974年 | 310篇 |
1973年 | 257篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
91.
Though many studies have examined the predictive power of expressed choices versus that of measured interests, fewer have been concerned with the relationship between the degree to which choices and interests agree and later persistence in an expressed choice. This study explored that relationship, using longitudinal data for 7706 college students and 1372 employed persons. Four levels of congruence between expressed choice and measured interests were identified. Results indicated that persistence in an expressed choice increases systematically as congruence between choice and interests increases. Implications for counselors are noted. 相似文献
92.
Jennifer M Kidd 《Journal of Vocational Behavior》1984,24(1):48-65
This study tested aspects of Super's self-concept theory of career development with a sample of British schoolchildren. Findings suggested that self-concepts and concepts of occupational preferences do have a role in career development, though there were some indications that the theory is more applicable to more able youngsters and to those high in self-esteem, than to others. Agreement between ideal-self-concepts and occupational preference concepts was significantly greater than that between actual-self-concepts and occupational preference concepts. This finding was interpreted as reflecting the youngsters' greater concern for the future and the possible, rather than the present and the given, and it suggested that refinements are needed in Super's theory. 相似文献
93.
Three pigeons were trained on a modified six-key matching-to-sample procedure. The third peck on the figure-sample key (which presented a bird, hand, face, beetle, rabbit, fish, flower, or red hue, as the sample) lighted only one comparison key. Every three additional pecks on the sample lighted another comparison key, up to a maximum of five keys. Pecks on keys of matching figures produced grain. Pecks on nonmatching keys (mismatches) turned off all lights on the comparison keys and repeated the trial. Three figures were used during acquisition. The birds learned to peck each sample until the matching comparison stimulus appeared on one of three comparison stimulus keys, and then to peck that key. Later, five novel stimuli, employed as both sample and comparison stimuli, and two additional matching keys were added. Each bird showed matching transfer to the novel samples. The data suggest that the birds may have learned the concept of figure matching rather than a series of two-component chains or discrete five-key discriminations. 相似文献
94.
95.
96.
97.
98.
99.
100.