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151.
Conditioned reinforcement value and resistance to change 总被引:1,自引:0,他引:1
Three experiments examined the effects of conditioned reinforcement value and primary reinforcement rate on resistance to change using a multiple schedule of observing-response procedures with pigeons. In the absence of observing responses in both components, unsignaled periods of variable-interval (VI) schedule food reinforcement alternated with extinction. Observing responses in both components intermittently produced 15 s of a stimulus associated with the VI schedule (i.e., S+). In the first experiment, a lower-valued conditioned reinforcer and a higher rate of primary reinforcement were arranged in one component by adding response-independent food deliveries uncorrelated with S+. In the second experiment, one component arranged a lower valued conditioned reinforcer but a higher rate of primary reinforcement by increasing the probability of VI schedule periods relative to extinction periods. In the third experiment, the two observing-response components provided similar rates of primary reinforcement but arranged different valued conditioned reinforcers. Across the three experiments, observing-response rates were typically higher in the component associated with the higher valued conditioned reinforcer. Resistance to change was not affected by conditioned reinforcement value, but was an orderly function of the rate of primary reinforcement obtained in the two components. One interpretation of these results is that S+ value does not affect response strength and that S+ deliveries increase response rates through a mechanism other than reinforcement. Alternatively, because resistance to change depends on the discriminative stimulus-reinforcer relation, the failure of S+ value to impact resistance to change could have resulted from a lack of transfer of S+ value to the broader discriminative context. 相似文献
152.
只有从研究个体的先天体质入手,剖析个体生命特征,根据生命体自身的变化规律,预测生命各阶段将出现的各种问题,才能针对性地对个体生命的全过程进行全面地分析、评估、监测、预防、干预和维护。四元生命管理即为凸显个体独特性的、从测评先天体质入手、强调四元平衡互动的、对生命全过程进行的管理。 相似文献
153.
问诊作为临床诊断的开始和方法,具有促进医患良性沟通、明确诊断、减少医疗纠纷和贯彻新医学模式的重要价值。问诊过程中,医生除了注重其技术性和程序性内容以外,更要坚持哲学的普遍联系、辨证发展、病人个体差异和巧用过渡性语言等思维方法。 相似文献
154.
趋利避害是生物的本能。《管子·禁藏》云:夫凡人之情, 见利莫能勿就, 见害莫能勿避。“两利相权取其重, 两害相权取其轻”是规范性决策理论的一基本原则。本研究以金钱作为奖赏或惩罚刺激, 检验人们能否理性地遵循“价值最大化”原则。在实验中, 主试以检查硬币生产年代的数目为由, 让被试逐枚地感受两个金钱序列:10元硬币序列(由20枚五角硬币组成)和10.3元硬币序列(由20枚五角硬币和3枚一角硬币组成),随后评定获得(或损失)各金钱序列的高兴(或不高兴)程度, 并从中选择一金钱序列(与硬币等值的金钱)作为其奖赏(或惩罚)。实验为2 (3枚一角硬币在序列首vs. 3枚一角硬币在序列尾)´2(先检查10元硬币序列vs. 先检查10.3元硬币序列)´2(损失vs. 获得)三因素设计, 每种条件随机分配15名商学院学生被试。结果表明, 被试倾向选择获益少(10元)和损失多(-10.3元)的金钱序列; 且获益大(10.3元)时高兴程度小, 损失小(-10元)时不高兴程度大。这一结果意味着:“聊”并不胜于“无”,反而是“无”胜于“聊”。其中, 伴随着违背价值最大化原则所产生的情感亦有悖逻辑。负性情感的引发一般有其“逻辑正确”的原因(如, 无惠而不乐); 而引发本研究负性情感的原因实属“逻辑错误”(如, 惠多而不乐)。这种不曾被定义而类似于“冤”的情感不仅见于个人,也见于民族、国家间的持续交往, 值得进一步研究。 相似文献
155.
Elimination-by-aspects and generalised extreme value offer competing paradigms for the representation of a common behaviour, that of individual discrete choice. Observing certain consistencies in their mathematical structure, several eminent authors have commented on the degree of equivalence between the two paradigms. Most contributions to this debate have, however, been less than definitive. More fundamentally, the contributions lack consensus. We advance the debate by establishing formal mathematical conditions under which three-alternative tree models from the two paradigms are exactly equivalent. We then extend our analysis to consider more general models, showing that equivalence can be established for general tree models, but not for cross-nested models. 相似文献
156.
NORMAN MOORADIAN 《Metaphilosophy》2006,37(5):673-690
Abstract: This article raises the question of how the ontological status of virtual objects bears on their intrinsic value. If virtual objects are unreal or less real than physical objects, does it mean that they will have less intrinsic value? If they have intrinsic value, what are the explanations for this value, and how do they relate to the ontological status of the virtual objects? First, the article reviews recent work concerning the ontological status of virtual reality and virtual objects. Second, it argues that in some cases the ontological status of virtual objects does undermine the value placed in them, in that the objects can fail to have the properties that ground the value attributions made to them, while in other cases their ontological status is not important. Finally, the article relates the grounding of value attributions to philosophical theories of value, in particular, perfectionism and hedonism. 相似文献
157.
Taxicab Correspondence Analysis 总被引:1,自引:0,他引:1
V. Choulakian 《Psychometrika》2006,71(2):333-345
Taxicab correspondence analysis is based on the taxicab singular value decomposition of a contingency table, and it shares
some similar properties with correspondence analysis. It is more robust than the ordinary correspondence analysis, because
it gives uniform weights to all the points. The visual map constructed by taxicab correspondence analysis has a larger sweep
and clearer perspective than the map obtained by correspondence analysis. Two examples are provided.
This research was financed by the Natural Sciences and Engineering Research Council of Canada. The author thanks Serge Vienneau
for his help regarding the graphical displays, and also thanks the editor, associate editor, and two reviewers for their constructive
comments. 相似文献
158.
关于医学人文教学几个问题的认识 总被引:30,自引:7,他引:23
杜治政 《医学与哲学(人文社会医学版)》2006,27(5):5-9
文化素质教育与人文教育有联系,但也有区别;对人文精神的理解,存在东方与西方、传统与现在的差异;人文精神的核心是人是一切的根本,人的生命、思想、理想应当受到关爱和尊重;人文精神或人文主义包括理念层次和实践层次;人文精神是一种普世价值而主要不是意识形态;人文知识不等于人文素养,医学人文教育的目标是提升学生对生命的尊重与关爱;医学人文教育应当渗透到医学专业教育之中。 相似文献
159.
医学高新技术在现代医患关系中扮演的角色 总被引:11,自引:4,他引:7
医学高新技术在现代医患关系中扮演着重要的角色,然而在缺乏有效的政府监管、医院与医生逐利行为及社会不良导向等因素下,其自身的角色发生了异化。通过对异化现象、产生原因及采取措施等方面的分析,明确其正确的价值取向,以促进医患关系的健康、和谐发展。 相似文献
160.
Michael Smith 《The Journal of Ethics》2006,10(1-2):75-106
I take issue with two suggestions of Joel Feinberg's: first, that it is incoherent to suppose that human life as such is absurd,
and, second, that a particular human life may be absurd and yet saved from being tragic by being fulfilled. I also argue that
human life as such may well be absurd and I consider various responses to this. 相似文献