全文获取类型
收费全文 | 3170篇 |
免费 | 229篇 |
出版年
2023年 | 55篇 |
2022年 | 46篇 |
2021年 | 83篇 |
2020年 | 123篇 |
2019年 | 126篇 |
2018年 | 173篇 |
2017年 | 153篇 |
2016年 | 164篇 |
2015年 | 128篇 |
2014年 | 136篇 |
2013年 | 464篇 |
2012年 | 211篇 |
2011年 | 204篇 |
2010年 | 110篇 |
2009年 | 123篇 |
2008年 | 168篇 |
2007年 | 143篇 |
2006年 | 104篇 |
2005年 | 92篇 |
2004年 | 74篇 |
2003年 | 91篇 |
2002年 | 77篇 |
2001年 | 54篇 |
2000年 | 38篇 |
1999年 | 27篇 |
1998年 | 25篇 |
1997年 | 20篇 |
1996年 | 23篇 |
1995年 | 12篇 |
1994年 | 8篇 |
1993年 | 7篇 |
1992年 | 5篇 |
1991年 | 10篇 |
1990年 | 7篇 |
1989年 | 6篇 |
1988年 | 5篇 |
1986年 | 6篇 |
1985年 | 6篇 |
1984年 | 4篇 |
1983年 | 6篇 |
1982年 | 18篇 |
1981年 | 5篇 |
1980年 | 4篇 |
1979年 | 4篇 |
1978年 | 6篇 |
1975年 | 6篇 |
1973年 | 5篇 |
1971年 | 3篇 |
1938年 | 3篇 |
1937年 | 3篇 |
排序方式: 共有3399条查询结果,搜索用时 15 毫秒
31.
Matti Häyry 《Theoretical medicine and bioethics》1991,12(2):97-116
In this paper three questions concerning quality of life in medicine and health care are analysed and discussed: the motives for measuring the quality of life, the methods used in assessing it, and the definition of the concept. The purposes of the study are to find an ethically acceptable motive for measuring the quality of life; to identify the methodological advantages and disadvantages of the most prevalent current methods of measurement; and to present an approach towards measuring and defining the quality of life which evades the difficulties encountered and discussed. The analysis comprises measurements both in the clinical situation concerning individual patients and in research concerning whole populations. Three motives are found for evaluating the quality of human life: allocation of scarce medical resources, facilitating clinical decision making, and assisting patients towards autonomous decision making. It is argued that the third alternative is the only one which does not evoke ethical problems. As for the methods of evaluation, several prevalent alternatives are presented, ranging from scales of physical performance to more subtle psychological questionnaires. Clinical questionnaires are found to fail to provide a scientific foundation for universally measuring the quality of life. Finally, the question of definition is tackled. The classical distinction between need-based and want-based theories of human happiness is presented and discussed. The view is introduced and defended that neither of these approaches can be universally preferred to the other. The difficulty with the need approach is that it denies the subjective aspects of human life; whereas the problem of the want approach is that it tends to ignore some of the objective realities of the human existence. In conclusion, it is argued that the choice of methods as well as definitions should be left to the competent patients themselves — who are entitled, if they so wish, to surrender the judgement to the medical personnel. Technical factors as well as the requirements of respect for autonomy and informed consent support this conclusion. 相似文献
32.
Using the method of paired comparisons, pairs of simultaneous horizontal or vertical lines, with one line above and one below or one on the left and one on the right of a fixation point, respectively, were presented tachistoscopically for length comparison. Space errors were found to have a pattern similar to that of time errors. The tendency to guess the comparative response from the absolute magnitude of stimuli is proposed as a basis for time and space errors. Manipulation of attentional scanning, which implies a more frequent usage of this guessing strategy for one of the two lines in a pair, was shown to affect space errors. 相似文献
33.
Unreliable probabilities,risk taking,and decision making 总被引:7,自引:0,他引:7
34.
Two naive human observers were conditioned to report on the slant of a 3.8-cpd sinusoidal grating viewed monocularly with a light-adapted eye and presented at various orientations extending from ?45 to +135 deg. The procedures used yielded a baseline measure of performance and measures obtained during conditioning, extinction, and reconditioning of the tilt-naming response. Both subjects learned rapidly, achieving a level of performance that permits efficient measurement of meridional differences in perceived orientation Ithe oblique effect) at a large number of angles. 相似文献
35.
36.
Dr. Käthe Steinhardt 《Synthese》1938,3(1):118-127
Ohne Zusammenfassung 相似文献
37.
ABSTRACT This article examines how non-religious children experience acts of collective worship and prayer in primary school settings and analyses how they negotiate religion and their non-religious identities in these events. Drawing on ethnographic fieldwork examining non-religious childhoods and collective worship in three English primary schools, the authors explore how non-religious children demonstrate their agency when confronted with particular boundaries and concepts related to religion and non-religion in school contexts. Attending to the experiences, perspectives, and practices of non-religious children adds to our understanding of the varieties of non-religion, which has to date largely focused on elite, adult populations. Focusing on non-religious children’s experiences of prayer reveals how these children did not experience tensions between praying to God and their non-religious identities and articulated their own interpretations of these practices, deepening understanding of the lived realities of non-religious cultures and identities. 相似文献
38.
Dr. Josef Schächter 《Synthese》1938,3(1):223-233
Ohne Zusammenfassung 相似文献
39.
40.
Andreas Mojzisch Johanna Ute Frisch Malte Doehne Maren Reder Jan Alexander Häusser 《British journal of psychology (London, England : 1953)》2021,112(1):144-162
The present study aimed to integrate the social identity approach to health and well-being with social network analysis. Previous research on the effects of social network centrality on stress has yielded mixed results. Building on the social identity approach, we argued that these mixed results can be explained, in part, by taking into account the degree to which individuals identify with the social network. We hence hypothesized that the effects of social network centrality on stress are moderated by social identification. Using a full roster method, we assessed the social network of first-year psychology students right after the start of their study programme and three months later. The effects of network centrality (betweenness, closeness, eigenvector centrality) and social identification on stress were examined using structural equation models. As predicted, our results revealed a significant interaction between network centrality and social identification on stress: For weakly or moderately identified students, network centrality was positively related to stress. By contrast, for strongly identified students, network centrality was unrelated to stress. In conclusion, our results point to the perils of being well-connected yet not feeling like one belongs to a group. 相似文献