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Cardiovascular reactivity to video game and mental arithmetic stressors was compared among three groups of men: aerobically trained mild hypertensives, untrained mild hypertensives, and a comparison group of untrained normotensives. Relative to the untrained hypertensives, the trained hypertensives reacted to the video game with marginally smaller systolic blood pressure and diastolic blood pressure, but there were no significant differences between these groups in reactivity during the mental arithmetic task. Comparisons between each hypertensive group and the normotensive group showed that blood pressure (BP) reactivity of normotensives during the video game was generally similar to that of trained hypertensives but smaller than that of untrained hypertensives. These results indicate that aerobic training, which has been found to reduce resting BP in mild hypertensives, may also exert a favorable impact in reducing cardiovascular reactivity of hypertensives during some stressful situations. 相似文献
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Switching points of view in spatial mental models 总被引:2,自引:0,他引:2
In six experiments, subjects read narratives describing varying spatial scenes with more than one point of view. They were probed with questions about objects located in six directions from each character's point of view. Subjects' response times were consistent with a one place-one perspective rule. They seemed to form separate mental models for separate places and to take a character's perspective when there was only one relevant character in a scene, but they seemed to take a neutral perspective when there was more than one probed point of view, rather than switch perspectives. 相似文献
4.
Perkins HS 《The Journal of clinical ethics》1992,3(2):133-137
[The author identifies] five problems familiar to clinical ethicists. (1) Physicians often do not recognize important ethical issues. (2) Debate exists over whether such consultations should give specific management recommendations. (3) Principles of medical ethics cannot, by themselves, resolve real ethical issues. (4) The patient's interests sometimes conflict with the interests of the family, the health professionals, and the hospital. (5) Clinical ethics consultations take a toll on the consultant....[He] discuss[es] the implications of each problem for clinical ethics consultations and offer[s] a solution to it. 相似文献
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Keith J. Perkins 《Journal of School Psychology》1984,22(1):1-15
As an example of the development of an early school psychology program in the Southwest, the beginning of Child Study and Consultation Service is described. The unique aspect of this program undoubtedly had to do with its relationship to a demonstration mental health center and a consultation program started in several elementary school districts in the area. Beginning with a consortium of five school districts, it was later expanded to include 16 school districts with a staff of 15 doctoral-level school psychologists. This account also describes the author's involvement with the Division of School Psychology and some of the major issues facing the division in the late 1950s and 1960s. An attempt is made to show how the author's educational and work experiences contributed to the philosophy, policies, and practices of school psychology. 相似文献
7.
Franklin Tanner Capps 《International Journal of Systematic Theology》2023,25(2):186-189
This article offers a reading of a feature of John Calvin's theology that has received little attention – the role of visuality in his writings on the sacraments as developed between the years of 1536 and 1561. As an intervention into longstanding debates over the legacy of his sacramental theology, I argue that Calvin's use of visual categories to describe the sacramental event is best understood in terms of what I will call the ‘apoiconic’: a vision of divinity had through visual negation. I suggest that for Calvin the sacramental elements signal a divine absence that, in turn, redirects the gaze upward to Christ, whose spiritual presence constitutes the sacraments' substance. To make this argument, I trace the trinitarian dynamics of this ‘apoiconic vision’, where the Spirit unveils the living Christ by illumining the eyes of faith to comprehend the power of God that dwells therein. I close by reflecting on ‘apoiconicity’ as a strategy for moving beyond anxieties over materiality's idolatrous entanglements and for developing a sacramental theology that is cosmic in scope. 相似文献
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David N. Perkins 《Attention, perception & psychophysics》1972,12(5):396-400
Twenty-seven university students judged whether each of 128 drawings of parallelopipeds appeared to represent three-dimensional rectangular boxes. Half the pictures could not geometrically have been projections of rectangular boxes. The null hypothesis that Ss’ judgments were unrelated to geometry was rejected at the .001 level of significance, and the correlation between Ss’ judgments and perfect discrimination averaged .86 over three variations of the experiment. The results support a general hypothesis about the perception of simple space forms according to which viewers impose geometric constraints, such as rectangularity and symmetry, but only when the constraints are projectively possible. 相似文献
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Subjects named alphabetic characters that had been rotated, reflected, or inverted. Inversions induce more errors than mirror reflections and reflections induce more than rotations. In a significant number of mistakes a transformed character was assumed to be normally oriented, but in most a transformed character was confused with the mirror image of the original. The data suggest the existence of an “orientation set” in which the identiflcation of ambiguous characters depends largely on their anticipated orientation. The individuality of the data for the different orientations suggests that different transformations are compensated for in part by different mechanisms. 相似文献
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