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121.
Accurate timing performance during auditory–motor synchronization has been well documented for finger tapping tasks. It is believed that information pertaining to an event in movement production aids in detecting and correcting for errors between movement cycle completion and the metronome tone. Tasks with minimal event-related information exhibit more variable synchronization and less rapid error correction. Recent work from our laboratory has indicated that a task purportedly lacking an event structure (circle drawing) did not exhibit accurate synchronization or error correction (Studenka & Zelaznik, in press). In the present paper we report on two experiments examining synchronization in tapping and circle drawing tasks. In Experiment 1, error correction processes of an event-timed tapping timing task and an emergently timed circle drawing timing task were examined. Rapid and complete error correction was seen for the tapping, but not for the circle drawing task. In Experiment 2, a perceptual event was added to delineate a cycle in circle drawing, and the perceptual event of table contact was removed from the tapping task. The inclusion of an event produced a marked improvement in synchronization error correction for circle drawing, and the removal of tactile feedback (taking away an event) slightly reduced the error correction response of tapping. Furthermore, the task kinematics of circle drawing remained smooth providing evidence that event structure can be kinematic or perceptual in nature. Thus, synchronization and error correction, characteristic of event timing (Ivry, Spencer, Zelaznik, & Diedrichsen, 2002; Repp, 2005), depends upon the presence of a distinguishable source of sensory information at the timing goal. 相似文献
122.
We observed 11 undergraduates in an experiment designed to simulate infant caregiving. In negative reinforcement conditions experienced by all participants, a targeted caregiving response (e.g., rocking a baby doll) produced escape from, and avoidance of, a recorded infant cry. Nine participants' caregiving was shown to be controlled by this negative reinforcement contingency. Nine participants experienced an extinction condition that consisted of an inescapable cry, and the previously reinforced caregiving responses of 2 of these participants were resistant to extinction. For both of these participants, the previously reinforced response was eliminated when an alternative form of caregiving was reinforced. These results highlight the role of negative reinforcement in infant caregiving and suggest the need for additional research on the effects of crying on caregivers as well as the development of effective strategies for minimizing infant crying. 相似文献
123.
We used a new method to assess how people can infer unobserved causal structure from patterns of observed events. Participants were taught to draw causal graphs, and then shown a pattern of associations and interventions on a novel causal system. Given minimal training and no feedback, participants in Experiment 1 used causal graph notation to spontaneously draw structures containing one observed cause, one unobserved common cause, and two unobserved independent causes, depending on the pattern of associations and interventions they saw. We replicated these findings with less-informative training (Experiments 2 and 3) and a new apparatus (Experiment 3) to show that the pattern of data leads to hidden causal inferences across a range of prior constraints on causal knowledge. 相似文献
124.
本研究选取了影响员工创新行为的组织(人力资源管理实践)、个体(对心理契约破裂的感知)及领导因素(上下级沟通),通过402名企业员工的问卷调查,采用有调节的中介研究设计,对人力资源实践影响员工创新行为的机制进行研究。结果发现:(1)人力资源管理实践水平与员工创新行为正相关;(2)心理契约破裂在人力资源管理实践与创新行为关系间起部分中介作用;(3)上下级沟通水平调节了心理契约破裂与创新行为的关系,也调节了心理契约破裂对人力资源实践与创新行为关系的中介作用。 相似文献
125.
当前新技术、人机交互的新特征、社会和人的新需求给中国人因学(Human Factors)的进一步发展创造了一个有利时机。本文首先讨论和分析了一些具有代表性的开拓了人因学科研究深度和广度的新技术和新途径, 包括神经人因学, 认知工程, 协同认知系统, 社会技术系统; 以及人因学科应用中的一些挑战和策略。然后, 就进一步发展我国的人因学科, 本文提出首先要解决的问题是建立多学科交叉的人因学科的科研教育体制, 并在此基础上, 注重理论创新, 以创新设计为突破点, 在智能系统、用户体验、航天航空和医疗健康等领域中优先发展和应用。当前迫切需要解决的是, 建立完善的人因学科高校教育体系, 建立完善的人因学科多学科交叉的科研体系, 以及建立人因学科行业资质标准和设计标准体系。 相似文献
126.
The mechanisms underlying the right hemisphere's dominance for spatial and attentional functions lacks a comprehensively explanation. For example, perceptual biases, as observed in line bisection and related tasks, might be caused by an attentional asymmetry or by perceptual processes such as a specialization of the left and right hemisphere for high and low spatial frequencies (SFs), respectively. Here we used the gratingscales task to measure perceptual bias in SF judgements, and we cued participants' attention either to high or low SFs. Participants showed a leftward bias when comparing the high SF components of the stimulus, and a rightward bias when comparing the low SF components-opposite to what would be expected from a hemispheric lateralization for SFs. Two control experiments used different strategies to manipulate the width of the attentional window. However, we observed no influence on perceptual bias, thus ruling out the possibility that the results in Experiment 1 were due to differences in attentional window size. These data support the idea of an attentional asymmetry underlying perceptual bias. Our results provide novel support for the role of attentional asymmetry in perceptual biases. 相似文献
127.
Children’s perceptions of the emotional reactions of same- and different-sex characters in stories containing ambiguous and
unambiguous emotional contexts were examined. According to the Parallel-Constraint-Satisfaction Theory (Kunda and Thagard.
Psychological Review, 103, 284–308, 1996), stereotypes are more likely to be utilized in ambiguous contexts, defined here as those likely to elicit
multiple emotional responses. Seventy suburban U.S. preschoolers were read vignettes describing boys or girls in ambiguous
or unambiguous emotion-inducing events and reported how the vignette characters were feeling. Results suggest that the perceptions
of participants were more likely to reflect gender–emotion stereotypes (e.g. perceiving males as angry and females as sad)
in ambiguous contexts than in unambiguous contexts. Results are discussed in terms of children’s emerging understanding of
gender–emotion stereotypes. 相似文献
128.
Fabrice Jotterand 《Nanoethics》2008,2(1):15-23
With the rapid progress and considerable promise of nanobiotechnology/neurosciences there is the potential of transforming
the very nature of human beings and of how humans can conceive of themselves as rational animals through technological innovations.
The interface between humans and machines (neuro-digital interface), can potentially alter what it means to be human, i.e.,
the very idea of human nature and of normal functioning will be changed. In this paper, I argue that we are potentially on
the verge of a paradigm shift in terms of the ends and goals of techno-science and its applications in the biomedical sciences.
In particular, the development of brain-computer interfaces could reconceptualize the very notion of what it means to be human.
Hence, we should not limit our reflections of applications in terms of therapy and enhancement but also include an examination
of applications aiming at the alteration of human nature. To this end I will first delineate the potential paradigm shift
and then map out four distinct clusters of concerns in relation to the brain-computer interface. Finally, I argue that our
moral and philosophical reflections should follow a procedural model based on managed consensus due to our pluralistic context.
相似文献
Fabrice JotterandEmail: |
129.
Nanotechnology, Enhancement, and Human Nature 总被引:1,自引:0,他引:1
Nicole Hassoun 《Nanoethics》2008,2(3):289-304
Is nanotechnology-based human enhancement morally permissible? One reason to question such enhancement stems from a concern for preserving our species. It is harder than one might think, however, to explain what could be wrong with altering our own species. One possibility is to turn to the environmental ethics literature. Perhaps some of the arguments for preserving other species can be applied against nanotechnology-based human enhancements that alter human nature. This paper critically examines the case for using two of the strongest arguments in the environmental ethics literature to show that nanotechnology-based human enhancements are impermissible: 1) Our species, like many other naturally occurring species, has aesthetic value. So, nanotechnology-based human enhancements that alter our species should be prohibited. 2) Our species plays valuable ecological roles. Nanotechnology-based human enhancements that alter our species are likely to interfere with our species playing our ecologically valuable roles. So, such enhancements should be prohibited. Neither argument, ultimately, proves conclusive. The paper concludes, however, that considerations underlying both arguments may show us that some nanotechnology-based human enhancements are impermissible. 相似文献
130.
吸收现代企业的人力资源管理思想是近年来公共行政部门人事管理工作的趋势。公共行政管理部门人力资源培训工作体系如何在先进的现代培训理念框架内实现为公共行政部门服务的针对性和有效性,是一个具有现实意义的问题。本文从培训目标、培训内容、培训方式、培训师资和评估激励5个方面探讨了公共行政管理部门干部教育培训管理工作的标准。 相似文献