全文获取类型
收费全文 | 1473篇 |
免费 | 42篇 |
国内免费 | 1篇 |
专业分类
1516篇 |
出版年
2023年 | 9篇 |
2020年 | 14篇 |
2019年 | 23篇 |
2018年 | 19篇 |
2017年 | 28篇 |
2016年 | 31篇 |
2015年 | 17篇 |
2014年 | 34篇 |
2013年 | 145篇 |
2012年 | 50篇 |
2011年 | 56篇 |
2010年 | 37篇 |
2009年 | 31篇 |
2008年 | 58篇 |
2007年 | 48篇 |
2006年 | 42篇 |
2005年 | 38篇 |
2004年 | 48篇 |
2003年 | 52篇 |
2002年 | 41篇 |
2001年 | 22篇 |
2000年 | 33篇 |
1999年 | 25篇 |
1998年 | 21篇 |
1997年 | 26篇 |
1996年 | 24篇 |
1995年 | 21篇 |
1994年 | 23篇 |
1993年 | 20篇 |
1992年 | 25篇 |
1991年 | 15篇 |
1990年 | 17篇 |
1989年 | 13篇 |
1988年 | 11篇 |
1987年 | 15篇 |
1986年 | 17篇 |
1985年 | 20篇 |
1984年 | 30篇 |
1983年 | 29篇 |
1982年 | 12篇 |
1981年 | 26篇 |
1980年 | 12篇 |
1979年 | 14篇 |
1978年 | 12篇 |
1977年 | 27篇 |
1976年 | 18篇 |
1975年 | 30篇 |
1974年 | 16篇 |
1973年 | 19篇 |
1972年 | 14篇 |
排序方式: 共有1516条查询结果,搜索用时 0 毫秒
171.
172.
Harvey J Langholtz Christopher Ball Barron Sopchak Jacqueline Auble 《Organizational behavior and human decision processes》1997,70(3):249-266
We all face resource-allocation tasks, yet little is known about how people make resource-allocation decisions. Three earlier papers (Langholtz, Gettys, & Foote, 1993, 1994, 1995) established that people can intuitively solve technical two-dimensional resource-allocation problems, where allocations are made on a continuous scale, reaching solutions that approach the optimum solution determined with Linear Programming (LP). In this research we expand our understanding of how people make resource-allocation decisions by examining how people perform complex but commonplace problems using a discrete scale where optimal solutions are determined with Integer Programming. We also contrast performance under conditions where progressively unequal scheduling is required to reach the optimum solution. The data show people can achieve solutions that provide most of the payoffs found with LP, even when they are faced with a complicated three-dimensional problem, but there is a tendency toward equal scheduling under all conditions. 相似文献
173.
Mary Gallagher Rob Millar Owen Hargie Roger Ellis 《British Journal of Guidance & Counselling》1992,20(3):274-290
The aim of this study was to ascertain the self-perceived social and personal concerns of adolescents attending educational institutions in Northern Ireland. 446 questionnaires from 15-18-year-old students at ten institutions were analysed in order to determine the frequency with which respondents reported worrying about the following broad areas: school, choosing a job, finding a job, home, starting work, opposite-sex relationships, personal issues, and relating to others. The effects of variables such as gender, age and nature of educational institution attended were also examined. The results indicated that most frequent worry was reported about finding and choosing employment, personal issues and opposite-sex relationships. Gender, age and religious affiliation of school attended exerted major effects. Implications for those involved in working with adolescents within educational contexts are discussed. 相似文献
174.
Arthur J. Reynolds Roger P. Weissberg Wesley J. Kasprow 《American journal of community psychology》1992,20(5):599-624
Investigated predictors of five measures of early school adjustment for an ethnically diverse cohort of 683 inner-city kindergartners and first graders. Data from 2 consecutive years were collected from teachers, school records, and children. A multiple-regression preduction model significantly explained children's competence behavior, problem behavior, reading achievement, mathematics achievement, and school absences. Prior adjustment and sociodemographic factors explained a majority of the variance in adjustment. Perceived quality of parent involvement was signifcantly related (in the expected direction) to all five outcomes. Exposure to life events was significantly associated in the expected direction with competence behavior, problem behavior, and school absences but not with reading and mathematics achievement. Together, parent involvement and life-event variables explained as much as 12% of the variance in adjustment independent of sociodemographic and prior adjustment factors. The role of family and school factors in the adjustment of children at risk is discussed [corrected]. 相似文献
175.
Roger Schmit 《Husserl Studies》1992,9(1):31-49
Ohne ZusammenfassungZu danken habe ich den Herren Ernst Wolfgang Orth und Riccardo Pozzo für die freundliche Durchsicht des Manuskripts und wertvolle Hinweise. 相似文献
176.
A study of six Broca's aphasics is reported. The task was to complete sentence frames with a missing word whose type was systematically varied by syntactic form class (nouns, verbs, prepositions, and particles) and the number of lexical options appropriate to any given instance. The primary aim was to contrast syntactic type (content vs. function words) and level of sentential constraint as ways of determining whether there was a central syntactic component to the language deficit. There was a significant effect for word type and an interaction between word type and level of constraint. These results are discussed as supporting a syntactic interpretation of the deficit. 相似文献
177.
The contents of 800 singles ads were examined. They were compared by the gender of the advertiser, the year of appearance (1991 and 1986), and the SES of the target readership (affluent and general). There were very few advertisers who listed themselves as black, so these ads were not included in the study. Gender differences were most important. Men were more likely to offer financial security and seek attractiveness. Women were more likely to offer attractiveness and seek financial security. The gender differences were in agreement with those reported for over a decade and from many geographical areas, although less than half of the advertisers mentioned either finances or attractiveness. Contrary to our hypotheses, the contents of mens' and womens' ads were more different in 1991 than they had been in 1986 and more in conformity with sexual stereotypes. Ads in a paper with an affluent readership were more likely to mention educational and financial status while ads in a paper with a readership throughout the metropolitan area were more likely to mention physical characteristics. 相似文献
178.
179.
For this experiment a visual illusion was created in which the participant's finger looked and felt as though it was being stretched to twice its normal length until it snapped and the tip came off. It was then stabbed with virtual weapons while skin conductance was measured. Sometimes the fingertip moved under the participant's own control and sometimes it moved independently. Curiously, detaching the tip of the finger destroyed the underlying ownership for the remaining stump as well as for the tip itself, even when the tip was under participants' control. These results have implications for theories of agency, embodiment, and tool-use. 相似文献
180.
Ankle inversion injuries are common, yet little is known about the error associated with different positions as inversion depth increases. In this study, absolute judgments made without feedback were used to measure discrimination of different extents of ankle inversion which arose from active movements made to physical stops by 20 self-reported right side-dominant participants. Testing was conducted over three sets of five inversion depths that were within a range of 1.4 degrees and centered around mean depths of 8,11, and 14 degrees. Discrimination of ankle inversion movements decreased linearly with depths of movement further into inversion, both within and across the sets of inversion depths. Thus, error in assessing movement position increased with inversion depth. Inversion movements that were made with the left foot were significantly better discriminated at all depths than those made with the right foot. 相似文献