全文获取类型
收费全文 | 1119篇 |
免费 | 171篇 |
国内免费 | 51篇 |
专业分类
1341篇 |
出版年
2025年 | 3篇 |
2024年 | 24篇 |
2023年 | 24篇 |
2022年 | 27篇 |
2021年 | 34篇 |
2020年 | 63篇 |
2019年 | 49篇 |
2018年 | 50篇 |
2017年 | 47篇 |
2016年 | 45篇 |
2015年 | 33篇 |
2014年 | 68篇 |
2013年 | 113篇 |
2012年 | 30篇 |
2011年 | 53篇 |
2010年 | 34篇 |
2009年 | 57篇 |
2008年 | 82篇 |
2007年 | 82篇 |
2006年 | 77篇 |
2005年 | 63篇 |
2004年 | 56篇 |
2003年 | 34篇 |
2002年 | 26篇 |
2001年 | 30篇 |
2000年 | 27篇 |
1999年 | 15篇 |
1998年 | 21篇 |
1997年 | 13篇 |
1996年 | 10篇 |
1995年 | 12篇 |
1994年 | 7篇 |
1993年 | 5篇 |
1992年 | 5篇 |
1991年 | 4篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1988年 | 1篇 |
1986年 | 2篇 |
1985年 | 2篇 |
1984年 | 4篇 |
1983年 | 3篇 |
1978年 | 1篇 |
1975年 | 1篇 |
排序方式: 共有1341条查询结果,搜索用时 0 毫秒
161.
ABSTRACT. Predicting behavior has been a main challenge in human movement science. An important step within the theory of coordination dynamics is to find out the rules that govern human behavior by defining order parameters and control parameters that support mathematical models to predict the behavior of a system. Models to describe human coordination have been focused on interlimb coordination and on interpersonal coordination in affiliative tasks but not on competitive tasks. This article aims to present a formal model with two attractors to describe the interactive behavior on a 2v1 system in rugby union. Interpersonal distance and relative velocity critical values were empirically identified and were included as task constraints that define the attractor landscape. It is shown that using relative velocity as a control parameter the model offers reasonable prediction concerning the decision-making process. The model has the plasticity to adapt to other settings where interpersonal distances and relative velocities amongst system components act as significant task constraints. 相似文献
162.
Eva Gilboa‐Schechtman Elisheva Ben‐Artzi Pablo Jeczemien Sofi Marom Haggai Hermesh 《Cognition & emotion》2013,27(2):209-231
We assessed dysphoric and clinically distressed individuals' ability to ignore the emotional aspects of facial expressions using the Garner speeded‐classification task. Garner's paradigm tests the ability to selectively focus on a single relevant dimension while ignoring variations on other, irrelevant, ones. In the present task, the stimuli were faces of men and women expressing happy, angry, and neutral emotions. In Experiments 1 and 2, dysphoric and nondysphoric participants performed the Garner task, focusing on gender and ignoring emotion (Experiment 1) and focusing on emotion and ignoring gender (Experiment 2). Results suggest that dysphoric individuals exhibited more difficulty ignoring the emotional dimension of social stimuli even under specific instructions to do so than nondysphoric individuals. In Experiments 3 and 4, we replicated these results in clinically distressed and nondistressed individuals. The results of Experiment 3 further suggested that depression was more closely associated with the inability to selectively ignore emotion than was social anxiety. Experiment 4 confirmed that this failure of selective attention was specific to processing emotional, and not gender features. The implications of these findings for cognitive and interpersonal theories of depression are discussed. 相似文献
163.
Successfully explaining and replicating the complexity and generality of human and animal learning will require the integration of a variety of learning mechanisms. Here, we introduce a computational model which integrates associative learning (AL) and reinforcement learning (RL). We contrast the integrated model with standalone AL and RL models in three simulation studies. First, a synthetic grid‐navigation task is employed to highlight performance advantages for the integrated model in an environment where the reward structure is both diverse and dynamic. The second and third simulations contrast the performances of the three models in behavioral experiments, demonstrating advantages for the integrated model in accounting for behavioral data. 相似文献
164.
Lennart qvist 《Theoria》2014,80(4):319-349
In an earlier paper by the author, Åqvist (1999), I presented an approach to the logic of historical necessity, or inevitability, in the sense of a “two‐dimensional” combination of tense and modal logic for worlds, or histories, with the same time order, known as T × W logic. Distinctive features of that approach were, apart from its two‐dimensionality, its being based on discrete and finite time, and its use of so‐called systematic frame constants in order to enable us to indicate longitudes (x‐values) and latitudes (y‐values) of any points in the co‐ordinate systems under consideration. This led us to study and axiomatize an infinite hierarchy HTWxy of two‐dimensional modal tense logics with the characteristic operators for historical necessity and possibility added to the original basic vocabulary. The main purpose of the present paper is then twofold: (A) to extend the logics HTWxy to the interesting branch of philosophical logic constituted by deontic logic as combined with tense (or temporal) logic; and (B) to deal with a curious puzzle known as the so‐called epistemic obligation paradox – a well known stumbling‐block in this area of research in philosophical logic. We argue for a solution to both these problems, which appeals to a new infinite hierarchy DHTWxym of extensions of the HTWxy in the sense of logics combining dyadic deontic modalities with temporal ones such as those for historical necessity and other two‐dimensional modalities. 相似文献
165.
“新医科”的建设对于加强中国医学学术体系提出了新的要求。研究确立了包含学术训练、学术研究、学术评价的医学学术体系分析框架,检索和梳理了美、英、日、德、法五个国家医学的学术体系建设的历史沿革、显著特征以及发展趋势。发达国家具有教研一体的协同培养机制、严格的教育质量监管体系、多元筹资机制和注重应用的多维评价体系。建议我国医学教育促进学科交叉融合、注重应用为导向的科研经费分配与监管、重视医教产研合作的考核体系,以完善我国医学的学术体系建设。
相似文献166.
传统的以患者为基础的消化内镜医师培养模式已不能适应消化内镜的快速发展和病患对内镜操作技术的高要求,通过多媒体和虚拟现实技术建立的计算机辅助的内镜模拟训练系统相对于传统的消化内镜医师培训方式是一个巨大进步,它能帮助初学者较快掌握消化内镜诊疗操作的基本技能,使各级消化内镜培训中心的规范化教学成为可能.但是,模拟内镜训练必须结合实际病例的操作才能巩固从模拟内镜得到的内镜操作技能.本文总结了目前消化内镜医师培训的现状,重点对消化内镜模拟训练系统在内镜医师培训中的作用和存在的问题进行探讨,并提出了自己的观点. 相似文献
167.
Craig Crabtree 《World Futures: Journal of General Evolution》2013,69(3):213-228
Critical Factor Analysis (CFA) is presented as an exploratory general model for uniting the sciences and the humanities through identification and use of critical factors common to both. Two primary and eight subordinate critical factors, with corresponding principles, are identified and placed in a model that can be used for prediction, analysis, and design of systems. Use of CFA could conceivably raise system IQ, reduce unnecessary variety, and assist with the general acceptance of systems science. 相似文献
168.
Willis W. Harman 《World Futures: Journal of General Evolution》2013,69(4):277-310
Many indicators suggest that modern society is presently in a period of transition. The older order is showing obvious signs of decline, and elements of a new order appear to be forming. Growing numbers of people are coming to recognize that the worsening global dilemmas are best viewed as symptoms of an underlying disorder involving some of the most deeply underlying assumptions of modern society. The ultimate resolution of these dilemmas will come about, not through politically implemented “solutions,” but through our further evolution to a fundamentally different, “trans‐modern” society. The key challenge to individuals and organizations is to understand the necessary evolutionary change well enough to contribute toward its taking place with a minimum of attendant social disruption and human misery. 相似文献
169.
David Loye 《World Futures: Journal of General Evolution》2013,69(4):187-196
This paper reports the discovery of a lost part of Charles Darwin's theory of the origins of “the moral sense,” its apparent corroboration by what are in effect lost findings by brain researcher Paul MacLean, and the implications of these findings for the advancement of General Evolution Theory and humanity. 相似文献
170.
D. Paul Schafer 《World Futures: Journal of General Evolution》2013,69(7):481-510
The present system of politics is based on the centrality of economics. This system is not capable of coming to grips with the problems confronting humanity. A culture-based system of politics is required to do this and prevent ecological disaster. This system would make it possible to reduce the demands human beings are making on the natural environment and situate human welfare, environmental well-being, and the public interest at the core of the political process. The risks of such a system could be reduced through cultural education and improved cultural understanding. 相似文献