全文获取类型
收费全文 | 16592篇 |
免费 | 1363篇 |
国内免费 | 982篇 |
出版年
2023年 | 209篇 |
2022年 | 190篇 |
2021年 | 268篇 |
2020年 | 501篇 |
2019年 | 585篇 |
2018年 | 547篇 |
2017年 | 655篇 |
2016年 | 665篇 |
2015年 | 422篇 |
2014年 | 533篇 |
2013年 | 1771篇 |
2012年 | 347篇 |
2011年 | 437篇 |
2010年 | 365篇 |
2009年 | 562篇 |
2008年 | 744篇 |
2007年 | 786篇 |
2006年 | 743篇 |
2005年 | 633篇 |
2004年 | 551篇 |
2003年 | 455篇 |
2002年 | 424篇 |
2001年 | 263篇 |
2000年 | 249篇 |
1999年 | 215篇 |
1998年 | 172篇 |
1997年 | 143篇 |
1996年 | 119篇 |
1995年 | 110篇 |
1994年 | 105篇 |
1993年 | 81篇 |
1992年 | 64篇 |
1991年 | 45篇 |
1990年 | 49篇 |
1989年 | 27篇 |
1988年 | 39篇 |
1987年 | 26篇 |
1985年 | 369篇 |
1984年 | 417篇 |
1983年 | 344篇 |
1982年 | 449篇 |
1981年 | 441篇 |
1980年 | 443篇 |
1979年 | 396篇 |
1978年 | 445篇 |
1977年 | 351篇 |
1976年 | 353篇 |
1975年 | 272篇 |
1974年 | 278篇 |
1973年 | 236篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
MATS FREDRIKSON 《Scandinavian journal of psychology》1992,33(1):68-73
Blood pressure reactivity and passive behavioral tasks was studied in patients with mild essential hypertension and normotensive controls. The passive condition included 10 presentations of a 6 sec, 78 dB, 1000 Hz tone without any response requirements. In the active condition subjects were given an additional 10 tone presentations and asked to press a push-button at tone termination. The absolute and percent increase in systolic blood pressure from rest was greater in hypertensives than normotensives in response to the active condition but similar to the passive condition. It is concluded that patients with hypertension compared to normotensive controls show exaggerated blood pressure reactivity to tasks involving active but not passive coping efforts. Since the tasks used to induce active and passive coping in the present study were identical apart from coping requirements, the notion that the activity dimension in and of itself modulates reactivity differences between patients and controls is supported. 相似文献
22.
ROLAND GUSTAFSON 《Scandinavian journal of psychology》1992,33(1):80-85
Thirty-six women participated in an experiment exploring whether alcohol intoxication facilitates yielding to social persuasive information. Subjects were randomly assigned to either an Alcohol, a Placebo, or a Control Group. The alcohol dose was 1.0 ml of 100% alcohol/kg body weight. Subjects first estimated the length of a line and were then given faked feedback from either a male or a female peer reference group. This procedure was repeated 60 times. Analyses indicated that the Placebo group yielded more often than the Alcohol group irrespective of type of feedback. A measure of locus of control indicated no significant mean differences as a function of alcohol group but correlations between externality and yielding were strong for placebo subjects, that is, externally oriented placebo subjects yielded more than internally oriented placebo subjects. This was discussed in terms of feelings uneasiness caused by the discrepancy between feelings of intoxication and information about drink content. 相似文献
23.
本研究通过两个实验探讨了刺激呈现频度、刺激的形式及其性质、加工深度、操作难度、意向性诸因素对频度记忆的影响,结果表明频度编码并不是一个独立、自动的加工系统,对其它识记过程有影响的因素同时也能改变被试的频度估计水平;意向的作用主要体现在当识记任务有一定难度且又缺乏有效的回忆线索时,能够在有限的范围内提高频度估计的水平;记忆痕迹的深度和广度对于频度信息的提取来说是两个彼此关联的线索。此外,本文还就频度记忆领域几个主要理论观点作了简要评述。 相似文献
24.
25.
谈谈个人对智力落后儿童早期干预的看法 总被引:4,自引:0,他引:4
本文作者根据从事智力落后儿童的早期干预教学研究的实践经验对当今在我国开展早期干预的必要性以及早期干预的目的、设置的理由、内容、方式、对象、教师的条件、效果的评价以及开展的步骤等9个问题,提出了自己的看法。 相似文献
26.
量词肯定句和否定句的理解 总被引:6,自引:2,他引:4
本研究试图探索人们对舍有“所有”、“每一个”、“有一些”等量词的肯定句、否定句和双重否定句的理解。要求成人被试尽快判断呈现在计算机屏幕上的句子和哪一幅图画的内容相符。结果表明,影响反应时的因素为(1)句子的表层结构和它的底层意义的一致程度;(2)句子的意义和从图画中得出的命题的一致程度;(3)句子中使用的量词。结果还表明,否定句的判断时间不一定全都比肯定句的长。 相似文献
27.
Eugene Ryan 《Argumentation》1992,6(3):291-296
The first part of this paper contends that argumentation is central and essential to Aristotle's Rhetoric, and recounts a number of arguments in support of that view, particularly the recognition that deliberative rhetoric or the rhetoric of counsel is the primary concern of Aristotle's work. The second part of the paper reviews the work that follows in this present volume to show that the other writers' views fit in perfectly with this thesis. 相似文献
28.
Neven Sesardić 《Journal for General Philosophy of Science》1992,23(1):129-151
In contrast to the opinion of numerous authors (e.g. R. Rudner, P. Kitcher, L. R. Graham, M. Dummett, N. Chomsky, R. Lewontin, etc.) it is argued here that the formation of opinion in science should be greatly insulated from political considerations. Special attention is devoted to the view that methodological standards for evaluation of scientific theories ought to vary according to the envisaged political uses of these theories.I wish to thank the Alexander von Humboldt Foundation for having supported the work on this paper. 相似文献
29.
This study of 20 ‘white-collar’ workers aged 20–30 measured motivation, enjoyment and access to various categories of experience in both work and leisure, and examined their relationship with psychological well-being on a number of dimensions. The method used a short questionnaire, psychological scales and the innovatory ‘experience sampling methodology’ (ESM) where respondents answer questions in a diary on the receipt of a signal from a pre-programmed watch or radio pager eight times a day for 1 week. The results show, in line with other studies, that intrinsic motivation in daily life is correlated with happiness but that, not previously reported, when motivation at work is examined both extrinsic motivation and instances where a person had to do the activity but did not wish to be doing something else, i.e. ‘positive motivational change’, are correlated with positive aspects of psychological well-being, while instances where a person wanted to do the activity but wished to be doing something else, i.e. ‘negative motivational change’, correlated with negative aspects. The results also show that enjoyment in both work and leisure correlates with aspects of psychological wellbeing; and that macro ‘flow’ experiences, where high skills and high challenges are perceived as equal, are enjoyable and interesting and come primarily from work. The study also shows that categories of experience considered important for psychological well-being and deemed to come primarily from work can be obtained in leisure. The results are discussed in the context of person—situation interactions and processes, and it is advocated that these should be studied in a variety of samples. 相似文献
30.
Arthur L. Caplan 《Theoretical medicine and bioethics》1992,13(1):67-77
There has been a great deal of discussion, in this journal and others, about obstacles hindering the evolution of the philosophy of medicine. Such discussions presuppose that there is widespread agreement about what it is that constitutes the philosophy of medicine.Despite the fact that there is, and has been for decades, a great deal of literature, teaching and professional activity carried out explicitly in the name of the philosophy of medicine, this is not enough to establish that consensus exists as to the definition of the field. And even if consensus can be obtained as to what constitutes the philosophy of medicine, this does not mean that it exists as a field. 相似文献