全文获取类型
收费全文 | 5869篇 |
免费 | 79篇 |
国内免费 | 2篇 |
出版年
2020年 | 22篇 |
2019年 | 35篇 |
2018年 | 152篇 |
2017年 | 129篇 |
2016年 | 229篇 |
2015年 | 109篇 |
2014年 | 56篇 |
2013年 | 181篇 |
2012年 | 313篇 |
2011年 | 297篇 |
2010年 | 46篇 |
2009年 | 55篇 |
2008年 | 91篇 |
2007年 | 77篇 |
2006年 | 79篇 |
2005年 | 1356篇 |
2004年 | 705篇 |
2003年 | 472篇 |
2002年 | 161篇 |
2001年 | 58篇 |
2000年 | 33篇 |
1999年 | 48篇 |
1997年 | 29篇 |
1995年 | 19篇 |
1994年 | 27篇 |
1992年 | 45篇 |
1991年 | 57篇 |
1990年 | 72篇 |
1989年 | 58篇 |
1988年 | 39篇 |
1987年 | 63篇 |
1986年 | 47篇 |
1985年 | 44篇 |
1984年 | 44篇 |
1983年 | 35篇 |
1981年 | 19篇 |
1979年 | 45篇 |
1978年 | 27篇 |
1976年 | 26篇 |
1975年 | 46篇 |
1974年 | 48篇 |
1973年 | 50篇 |
1972年 | 43篇 |
1971年 | 47篇 |
1970年 | 27篇 |
1969年 | 29篇 |
1968年 | 29篇 |
1967年 | 27篇 |
1966年 | 26篇 |
1965年 | 19篇 |
排序方式: 共有5950条查询结果,搜索用时 15 毫秒
101.
Michael Davis 《Science and engineering ethics》1995,1(1):33-48
This article attempts to distinguish between science and technology, on the one hand, and engineering, on the other, offering
a brief introduction to engineering values and engineering ethics. The method is (roughly) a philosophical examination of
history. Engineering turns out to be a relatively recent enterprise, barely three hundred years old, to have distinctive commitments
both technical and moral, and to have changed a good deal both technically and morally during that period. What motivates
the paper is the belief that a too-easy equation of engineering with technology tends to obscure the special contribution
of engineers to technology and to their own professional standards and so, to obscure as well both the origin and content
of engineering ethics. 相似文献
102.
103.
This paper addresses a problem in reporting scientific research. The problem is how to distinguish between justifiable and unjustifiable data selection. Robert Millikan is notorious for an infamous remark that he used all his data when in fact he had used a selection. On this basis he has been accused of fraud. There is a tension here — historians and his defenders see his selection as understandable and legitimate, while current statements about the Responsible Conduct of Research imply his selection was illegitimate. This paper discusses two main issues that arise in assessing his conduct, whether he was intentionally misleading and whether he actually did mislead the scientific community about some facts of nature. It is argued that he was not intentionally misleading, and that it is unlikely that he misled the scientific community. 相似文献
104.
Myths and stereotypes about sexual assault reflect a society which excuses perpetrators of assault and blames victims for failing to control men's sexuality. Such views are well-established by early adulthood, but there is little research with adolescents. This study surveyed two hundred forty-four 14–16 year old Australian high school students (105 male, 139 female), of Anglo-European descent. Males were significantly more likely to endorse sexual assault myths, to agree that forced sex was acceptable in some situations, and to hold false stereotypes about sexual assault. Males also held more restrictive attitudes toward women's roles and endorsed a greater level of sexism in dating relationships. This suggests that male and female adolescents have differing expectations of dating relationships, which may underlie sexual assault within relationships. Assault-supportive attitudes are apparent at a young age, supporting the need for educational and social interventions targeting young people. 相似文献
105.
Britta Davis Dinsmore Brent Mallinckrodt 《Journal of multicultural counseling and development》1996,24(4):267-277
Certain racial identity attitudes may involve diminished internal emotional awareness, features of a syndrome known as “alexithymia,” which has been observed in survivors of extreme trauma. This study found that levels of alexithymia, but not eating disorders, were related to attitudes characteristic of early stages of racial identity development among African American women. 相似文献
106.
Inhibition of protein synthesis by anisomycin for a short duration impairs memory of a one-trial inhibitory avoidance task in rats. Memory of escape conditioning involving eight trials is disrupted only if the duration of protein synthesis is prolonged by repeated injections. In marked contrast, olfactory memory of rats trained on two odor discriminations is not affected by anisomycin even if the duration of inhibition is prolonged and the number of trials is reduced to a minimum. In previous work, leupeptin, a thiol proteinase inhibitor, was shown to impair olfactory discrimination learning, but left inhibitory and avoidance conditioning intact. Together, these results provide a pharmacological double dissociation of memory, and suggest that the same chemistries, or mixtures of chemistries, may not be involved in all types of memory. 相似文献
107.
T Werka J Sk?r H Ursin 《Journal of comparative psychology (Washington, D.C. : 1983)》1978,92(4):672-681
Lesions localized to specific areas of the amygdala and overlying cortex in rats produced differential effects in several behavioral tasks. Three different types of lesions were tested: central, basolateral, and cortex lateral to the amygdala. Lesions restricted to the central nucleus produced increased activity on all parameters studied in an open-field test, but the other two groups were not changed. In one-way active avoidance all three groups with lesions showed deficits. The most pronounced change was observed in the central group. All groups showed the same degree of retention loss, but in forced extinction of one-way active avoidance after retraining, the cortical and basolateral groups were most defective. A fear-reduction hypothesis is proposed for the central lesion. The basolateral and cortical areas may be more specifically involved in passive avoidance behavior. 相似文献
108.
G E Kühne J U Grünes W Knorr L Perina H Richter U Rommel R Sorger H St?ck N Waldow 《Psychiatrie, Neurologie, und medizinische Psychologie》1978,30(2):104-115
The antidepressants desipramine and imipramine were compared within the framework of a multiclinical study performed under the conditions of a controlled clinical experiment. There has been found a time-different remission of affective symptoms, which was not detectable for the inhibition of drive. The tachythymoleptic action of desipramine is discussed with reference to these results. Evaluation of the possibility of controlling affects shows different ranges of activity of desipramine and imipramine, with desipramine influencing especially negative psychoenergetic symptoms in the area of drives and emotions and imipramine, restrictive symptoms in addition to differential phenomena of the psychomotor expression. 相似文献
109.
G G?llnitz 《Psychiatrie, Neurologie, und medizinische Psychologie》1978,30(5):270-276
The author gives a brief survey of the development of Child-Neuropsychiatry in the G.D.R. and subsequently gives reasons for the decision in favor of the unity of neurology and psychiatry as applied to children and juveniles, which is in contrast to developments in other countries. In addition to hygienic, economic, organizational, and medical considerations, this decision was also determined by the fact that a Child-Neuropsychiatrist must, in his practical work as a subspecialist, be able to head a multiprofessional team and, thus, help assure optimum development of a child's personality. 相似文献
110.