全文获取类型
收费全文 | 4171篇 |
免费 | 370篇 |
国内免费 | 75篇 |
专业分类
4616篇 |
出版年
2025年 | 9篇 |
2024年 | 66篇 |
2023年 | 90篇 |
2022年 | 73篇 |
2021年 | 97篇 |
2020年 | 209篇 |
2019年 | 231篇 |
2018年 | 216篇 |
2017年 | 202篇 |
2016年 | 211篇 |
2015年 | 141篇 |
2014年 | 215篇 |
2013年 | 607篇 |
2012年 | 166篇 |
2011年 | 146篇 |
2010年 | 125篇 |
2009年 | 176篇 |
2008年 | 197篇 |
2007年 | 220篇 |
2006年 | 151篇 |
2005年 | 175篇 |
2004年 | 146篇 |
2003年 | 117篇 |
2002年 | 93篇 |
2001年 | 52篇 |
2000年 | 69篇 |
1999年 | 38篇 |
1998年 | 29篇 |
1997年 | 26篇 |
1996年 | 24篇 |
1995年 | 23篇 |
1994年 | 16篇 |
1993年 | 18篇 |
1992年 | 9篇 |
1991年 | 9篇 |
1989年 | 6篇 |
1988年 | 9篇 |
1985年 | 20篇 |
1984年 | 15篇 |
1983年 | 14篇 |
1982年 | 13篇 |
1981年 | 23篇 |
1980年 | 13篇 |
1979年 | 15篇 |
1978年 | 18篇 |
1977年 | 19篇 |
1976年 | 9篇 |
1975年 | 19篇 |
1974年 | 8篇 |
1973年 | 12篇 |
排序方式: 共有4616条查询结果,搜索用时 15 毫秒
41.
词频和年级对FOK判断的影响 总被引:6,自引:0,他引:6
本实验以识记材料的词频高低和被试年级为自变量对被试元记忆监测的FOK(feeling of knowing)判断进行研究。实验采用Hart提出的RJR(回忆—FOK判断—标准测验 )的经典范式。结果表明 :被试的年级影响FOK判断等级和准确性 ,大学生的FOK判断等级和准确性均高于高一年级学生 ;识记材料词频影响FOK判断等级的高低 ,不影响FOK判断准确性 ,被试对高频词对的FOK判断等级高于对低频词对的FOK判断等级 ,但FOK判断准确性无明显差异。 相似文献
42.
Xenotransplantation, or the use of animal cells, tissues and organs for humans, has been promoted as an important solution
to the worldwide shortage of organs. While scientific studies continue to be done to address problems of rejection and the
possibility of animal-to-human virus transfer, socio-ethical and legal questions have also been raised around informed consent,
life-long monitoring, animal welfare and animal rights, and appropriate regulatory practices. Many calls have also been made
to consult publics before policy decisions are made. This paper describes the Canadian public consultation process on xenotransplantation
carried out by the Canadian Public Health Association in an arm’s length process from Health Canada, the ministry overseeing
government health policy and regulation. Focusing on six citizen fora conducted around the country patterned after the citizen
jury deliberative approach, the paper describes the citizen panelists’ recommendations to hold off on proceeding with clinical
trials and the rationales behind this recommendation. The consultation process is discussed in the context of constructive
technology assessment, a framework which argues for broader input into earlier stages of technology innovation, particularly
at the technology design stage.
This study was supported by a grant to the first author from the Social Sciences and Humanities Research Council in Canada. 相似文献
43.
Herkert JR 《Science and engineering ethics》2001,7(3):403-414
Three frames of reference for engineering ethics are discussed—individual, professional and social—which can be further broken
down into “microethics” concerned with individuals and the internal relations of the engineering profession and “macroethics”
referring to the collective social responsibility of the engineering profession and to societal decisions about technology.
Few attempts have been made at integrating microethical and macroethical approaches to engineering ethics. The approach suggested
here is to focus on the role of professional engineering societies in linking individual and professional ethics and in linking
professional and social ethics. A research program is outlined using ethics support as an example of the former, and the issuance
of position statements on product liability as an example of the latter.
An earlier version of this paper was presented at the International Symposium on Technology and Society 2000 (ISTAS 2000),
Rome, Italy, 7 September 2000.
Joseph R. Herkert directs a dual-degree program in engineering and humanities/social sciences and is editor of Social, Ethical, and Policy Implications of Engineering (Wiley/IEEE Press). 相似文献
44.
Pritchard MS 《Science and engineering ethics》2001,7(3):391-402
Engineering Ethics literature tends to emphasize wrongdoing, its avoidance, or its prevention. It also tends to focus on identifiable
events, especially those that involve unfortunate, sometimes disastrous consequences. This paper shifts attention to the positive
in engineering practice; and, as a result, the need for addressing questions of character and imagination becomes apparent. 相似文献
45.
Kamm FM 《The Journal of Ethics》2001,5(3):221-240
In the first part of this article, I raisequestions about Dworkin's theory of theintrinsic value of life and about the adequacyof his proposal to understand abortion in termsof different ways of valuing life. In thesecond part of the article, I consider hisargument in ``The Philosophers' Brief on AssistedSuicide', which claims that the distinctionbetween killing and letting die is morallyirrelevant, the distinction between intendingand foreseeing death can be morally relevantbut is not always so. I argue that thekilling/letting die distinction can be relevantin the context of assisted suicide, but alsoshow when it is not. Then I consider why theintention/foresight distinction can be morallyirrelevant and conclude by presenting analternative argument for physician-assistedsuicide. 相似文献
46.
Jennifer H. Nolan & Charles E. Wright 《Current directions in psychological science》2001,10(3):102-105
Alzheimer’s disease (AD) and diabetes rarely occur together, a finding that provides a possible clue as to the development of AD. Abnormal glucose metabolism is not limited to diabetes, but also can include impaired glucose tolerance, insulin resistance, and hyperinsulinemia. AD patients have significantly varying insulin levels after drinking sugared sodas and thus may be classified as insulin resistant. After reviewing the literature on impaired glucose tolerance and insulin production in AD, we present several hypotheses as possible explanations for the relationship between insulin resistance and AD. Finally, we suggest future studies, including studies on use of thiazolidinediones (currently used in the treatment of diabetes) in AD. 相似文献
47.
Jessica E. Rohlfing Laura Nota Lea Ferrari Salvatore Soresi Terence J.G. Tracey 《Journal of Vocational Behavior》2012,81(3):330-337
The relations of differential occupational knowledge with interests and competence perceptions in children as well as how these relations were moderated by gender and grade were examined in this study using an Italian sample. Data were collected from samples of elementary school and middle school children (N = 539). The Inventory of Children's Activities—Revised (ICA-R; Tracey & Ward, 1998) was used to assess children's interest and competency perceptions in various activities associated with the Holland's RIASEC types. The Occupational Knowledge Scale (OKS) was created for this study, and consisted of a representative sampling of occupational titles to which children indicated their knowledge. Hierarchical regression results indicated a relationship between knowledge, interests, and competence perceptions in children. With regard to overall knowledge, no relationship was found between general knowledge and either grade or gender. More specific examination of the type of knowledge as it varied across the dimensions of People–Things, and Data–Ideas demonstrated that there appeared to be a specific pattern relating interest, gender, and grade to knowledge of occupations. For knowledge of people relative to things occupations, higher interest, higher grade level, and being female predicts stronger knowledge of people occupations. It was also found that interest in ideas predicts stronger knowledge of ideas occupations, and being male predicts stronger knowledge of high prestige occupations. Generally, competence perceptions did not have a unique relation with one's knowledge of People–Things, Ideas–Data, or Prestige; however, girls who reported higher competence had greater knowledge of ideas occupations. 相似文献
48.
《Philosophical Psychology》2012,25(1):133-141
Wittgenstein once remarked: “nobody can truthfully say of himself that he is filth. Because if I do say it, though it can be true in a sense, this is not a truth by which I myself can be penetrated: otherwise I should either have to go mad or change myself.” This has an immediate corollary, previously unnoted: that it may be true that someone is simply filth—a rotten person through and through—and also true that they don’t believe that they are filth (or, in a certain sense, that they do), but that it is absurd or means nothing to say “I’m filth.” Even considering the possibility seriously already prevents it from being true of one that one is (simply) filth. You just can't say “I'm filth” and mean it. In the act of saying it, it is already untrue. Nor can you even say and mean it: “it may be true that I’m filth,” and it still be true that you are filth. This paper considers cases of delusional belief and of depressive self-loathing in which people may find themselves believing things along the lines of “I’m filth.” 相似文献
49.
FREDDIE R. OBLIGACION 《Journal of community & applied social psychology》1996,6(2):109-126
Adopting a structural-cognitive perspective and path analysis, this study demonstrates that personal powerlessness generates sequelae of maladaptive cognitions, namely, low self-esteem, low success expectancies and a weak motivation for self-improvement. Despite adverse structural and natural forces, Bicolano women exhibited self-efficacy, high self-esteem, and strong propensity for self-improvement, albeit expressing low success expectancies. These constructive cognitions can be attributed to the women's strong achievement ethic, high educational attainment, and supportive kinship system. These factors also compensate for the depressive effects of low success expectancies on the motivation for self-improvement. Implications for empowerment strategies and cognitive literature are discussed. 相似文献
50.
Toni Alimi Elizabeth L. Antus Alda Balthrop-Lewis James F. Childress Shannon Dunn Ronald M. Green Eric Gregory Jennifer A. Herdt Willis Jenkins M. Cathleen Kaveny Vincent W. Lloyd Ping-cheung Lo Jonathan Malesic David Newheiser Irene Oh Aaron Stalnaker 《The Journal of religious ethics》2020,48(3):349-387
The editors of the JRE solicited short essays on the COVID-19 pandemic from a group of scholars of religious ethics that reflected on how the field might help them make sense of the complex religious, cultural, ethical, and political implications of the pandemic, and on how the pandemic might shape the future of religious ethics. 相似文献