全文获取类型
收费全文 | 5834篇 |
免费 | 602篇 |
国内免费 | 110篇 |
专业分类
6546篇 |
出版年
2025年 | 13篇 |
2024年 | 123篇 |
2023年 | 147篇 |
2022年 | 97篇 |
2021年 | 193篇 |
2020年 | 296篇 |
2019年 | 319篇 |
2018年 | 248篇 |
2017年 | 291篇 |
2016年 | 292篇 |
2015年 | 201篇 |
2014年 | 224篇 |
2013年 | 658篇 |
2012年 | 165篇 |
2011年 | 199篇 |
2010年 | 138篇 |
2009年 | 207篇 |
2008年 | 202篇 |
2007年 | 203篇 |
2006年 | 187篇 |
2005年 | 180篇 |
2004年 | 152篇 |
2003年 | 132篇 |
2002年 | 134篇 |
2001年 | 131篇 |
2000年 | 105篇 |
1999年 | 106篇 |
1998年 | 97篇 |
1997年 | 71篇 |
1996年 | 82篇 |
1995年 | 78篇 |
1994年 | 72篇 |
1993年 | 80篇 |
1992年 | 57篇 |
1991年 | 62篇 |
1990年 | 57篇 |
1989年 | 47篇 |
1988年 | 44篇 |
1987年 | 45篇 |
1986年 | 30篇 |
1985年 | 40篇 |
1984年 | 30篇 |
1983年 | 30篇 |
1982年 | 36篇 |
1981年 | 30篇 |
1980年 | 37篇 |
1979年 | 36篇 |
1978年 | 48篇 |
1977年 | 40篇 |
1976年 | 42篇 |
排序方式: 共有6546条查询结果,搜索用时 0 毫秒
91.
We evaluated the initial effectiveness, maintenance, and transferability of the results of functional communication training as an intervention for the challenging behaviors exhibited by 3 students. Assessment indicated that escape from academic demands was involved in the maintenance of the challenging behaviors. Social attention was also implicated as controlling the behavior of 1 student. The intervention involved teaching alternative assistance-seeking and attention-getting phrases to the students in an effort to replace challenging behavior with these verbal equivalents. Multiple baseline data collected across the 3 students indicated that not only did the intervention substantially reduce challenging behavior but also that these results transferred across new tasks, environments, and teachers, and were generally maintained from 18 to 24 months following the introduction of functional communication training. These results are discussed in light of recent efforts to develop effective interventions for severe challenging behavior and to understand the processes underlying transfer and maintenance of intervention effects. 相似文献
92.
93.
This article deals with the development of numeracy among young children of the four to seven year age group. The research investigation described had two aims: to see how early numeracy develops in children of different ages; and to see whether there are fixed points which might serve as milestones in the development of infant numeracy. The results of this investigation involving 96 children indicate a strong development of numeracy skills during this period. With reference to the literature, it is also shown that certain items of a test previously developed for this purpose may be taken as core items that do indeed represent milestones in the development of infant numeracy. 相似文献
94.
循证医学的辩证思维 总被引:8,自引:5,他引:8
随着临床医学的发展,临床医生面临着从理论知识加个人经验的医学模式向以科学证据为基础的医学模式转变。越来越多的卫生政策和诊疗指南的制定需要以高质量的研究结果为依据,如随机对照研究的结果,特别是随机对照研究的系统综述结论。循证医学模式要求医生在临床工作中不断提出问题并通过严格的科研设计来回答这些问题,同时强调不断进行知识更新,掌握最新研究证据以指导其临床工作。同时政府部门也鼓励发展循证医疗,因为它可通过研究有效的诊疗手段来提高卫生保健的效率。此外还有迹象表明法律决策过程中要参考是否遵循了研究证据和临床指南。知情的服务对象也促使临床工作者寻求研究证据作为依据,为了提高服务质量并且充分把握特殊专业领域的现状,临床工作者也需要不断了解新的依据信息。在众多的研究信息中,我们应对每项证据的研究方法、研究对象及观察的终点进行认真分析,确定该结论是否真实并适合我们的实际,从而制定有据可查的诊疗方案。 相似文献
95.
大五人格理论与人事测评中的人格结构分析 总被引:11,自引:1,他引:11
本研究以工商企业人事选拔工作中参与实际测评的成人被试为研究对象,采用因素分析方法对中国成人人格的内隐结构进行了分析,并对所获取得主要特质因素与大五人格理论模型的关系和差别进行了探讨。 相似文献
96.
Kimary N. Shahin 《Argumentation》1990,4(3):347-361
Problems with regard to the analysis of argumentative partly discourse arise from definitorial disconformity. In this article, Informal argument is taken as the primary definition to study the basic structure of argument from a fragment of an Agatha Christie novel. Bilmes' account of the notions of Formulation (F) and Decision (D+/D-) are adapted to describe the relations of opposition which are displayed in informal argument. The minimal structure of argument is represented by the formula F/D-/D-, in which F is a speaker's personal composition of a fact, the first D- is the disconfirming uptake of it by another speaker and the second D- is the completing disconfirming uptake by the initial speaker. Some of the speaker's possibilities to initiate an argument by expressing a Formulation are explored, as well as the social and cultural norms which play a role in argument-initiation and the concepts of win and loss. 相似文献
97.
Edward H. Haertel 《Psychometrika》1990,55(3):477-494
Relations are examined between latent trait and latent class models for item response data. Conditions are given for the two-latent class and two-parameter normal ogive models to agree, and relations between their item parameters are presented. Generalizationss are then made to continuous models with more than one latent trait and discrete models with more than two latent classes, and methods are presented for relating latent class models to factor models for dichotomized variables. Results are illustrated using data from the Law School Admission Test, previously analyzed by several authors. 相似文献
98.
Exploring the career-interest profiles of students has both practical and theoretical significance; however, a minimal amount of research has been conducted to address this issue. The present study combined latent profile analysis and differentiation values to investigate the career-interest profiles of 13,853 junior-high-school students. The results indicate that while the students’ interests could be stratified into 25 profiles, 44.6% of students could be classified the as having low-differentiation profiles (such as like or dislike all types of vocational activities) and 24.9% of students could be classified the as having the artistic-social (like both artistic and social types of activities) profile. In addition, the proportions of females and males differed significantly among the profiles, but different grades did not. The proportion of males was higher for all three low-differentiation groups than of female proportions. Implications for career practices and future research are proposed. 相似文献
99.
The present study investigated whether another individual’s gaze direction influences an observer’s affective responses. In Experiment 1, subjective self-ratings and an affective priming paradigm were employed to examine how participants explicitly and implicitly, respectively, evaluated the affective valence of direct gaze, averted gaze, and closed eyes. The explicit self-ratings showed that participants evaluated closed eyes more positively than direct gaze. However, the implicit priming task showed an inverse pattern of results indicating that direct gaze was automatically evaluated more positively than closed eyes were. Experiment 2 confirmed that the opposite patterns of results between the two tasks were not due to differences in presentation times of the gaze stimuli. The results provide evidence for automatic affective reactions to eye gaze and indicate a dissociation between explicit and implicit affective evaluations of eyes and gaze direction. 相似文献
100.