Muscular Activation Pattern of Bilateral Extensors Response to Asymmetric Hand Lifting During Trunk Flexion–extension Performance

The authors' purpose was to test the effect of asymmetric hand lifting on muscular activation patterns of 3 bilateral extensors. Eighteen male university students without back pain were volunteered. Each performed flexion–extension randomly with conditions of right lifting, left lifting, and nonlifting. Surface electromyography from bilateral thoracic, lumbar erector spinae, and hamstring was recorded. The cross-correlation and relative intensity in paired muscles of bilateral extensors was calculated in flexion as well as extension period. The results showed that the cross-correlation coefficient was decreased and the phase lag as well as the relative intensity of bilateral extensors was increased significantly in thoracic level. The phase lag as well as the relative intensity of bilateral extensors was increased significantly in lumbar level. It was concluded that asymmetric lifting has a significant effect on muscular activation of bilateral extensors in thorax level, which causes the ipsilateral extensor to activate larger and longer. Asymmetric lifting also has some effect on muscular activation of bilateral extensors in lumbar level but with less extent than in thorax level, which causes contralateral extensor to activate larger and longer. Asymmetric lifting seems to have no significant effect on muscular activation of bilateral hamstring.     

Collective Action Meets Prospect Theory: An Application to Coalition Building in Chile, 1973–75

Expected utility theory explains collective action as an attempt by individuals to maximize their gains. In contrast, my application of prospect theory to collective action suggests that people are motivated to participate in collective action by a fear of loss. These alternative rationalities are considered in the context of the successful cooperative effort of four economic groups in Chile during 1973–75, the first years of the Pinochet military regime. In this case, the logic of prospect theory better captures how actors made decisions about whether or not to engage in collective action. Of the four groups that did join the 1973–75 economic coalition, only one (the mineowners) appears to have maximized its net asset level, as expected utility theory predicts. All four groups seem to have been motivated to cooperate because they found themselves in the domain of losses and expected that cooperation with other, even rival, economic groups might help them recoup their recent losses.     

四参数模型对被试作答异常现象的拟合与纠正

心理与教育测验中存在着被试作答异常现象(能力测验中的猜测现象和睡眠现象, 人格测验中的非0下渐近线现象和非1上渐近线现象), 会导致被试能力或人格特征的测量偏差。在能力测验中, 研究者已提出了多种方法来纠正猜测现象和睡眠现象, 这些方法往往需要调整或删除被试作答信息, 而四参数模型不需要改变被试作答信息而能有效纠正被试能力高估或低估现象。在人格测验中存在着非0下渐近线和非1上渐近线现象, 四参数模型能增强测验项目拟合性能, 提高人格测验的准确性。     

On the “Theological Turn” in French henomenology

In this paper, I show that the claim for a “theological turn” in French phenomenology is not tenable by analyzing the relation between transcendencies and the modes of givenness in Husserl, the relation between the ethical transcendence and its mode of givenness in Levinas, and the question of the self of phenomenon and giveness in Marion. I argue that the inner motive of phenomenology requires it to go beyond the horizon of objectness and the question about God or theological issues are determined as part of its essential task in phenomenology. The principle of “go to the thing itself” does not predetermine or presuppose what phenomenology should deal with; it is always the thing itself that imposes itself on phenomenology.     

摆在现代外科医师面前的若干矛盾现象

随着自然和社会科学的进步,现代外科在得到了空前发展的同时,许多矛盾现象也摆在外科医师的面前,例如手术和非手术、手术扩大与缩小、手工操作和器械使用、手术实施和手术风险、经验主义和循证、临床治愈和健康之间的矛盾,如何正视和解决这些矛盾问题,关系到到现代外科学长远发展。     

腔内泌尿外科技术应用中的若干思考

近年来腔内泌尿外科迅速发展,在泌尿外科领域广泛应用.回顾历史,腔内泌尿外科器械是在与多种学科相互交叉和渗透的过程中发展的,学科交叉促进了腔内泌尿外科器械的发展和应用;腔内泌尿外科技术是医学人文关怀的体现,符合现代医学模式的要求.我们应加强医学与其它学科的交叉,促进腔内泌尿外科的发展,使疾病诊治更具人文精神.     

内隐学习和外显学习关系评述

文章从内隐学习与外显学习的区别、联系以及相互作用三方面,对这两个概念集合间的关系进行了辨析。最初,内隐学习这一概念的提出,是源于其与外显学习在现象学、实验操作、神经生理学以及学习机制等方面的诸多不同。近年来,虽然内隐学习的独立地位已被充分确立,但是,也有越来越多的证据表明,内隐学习和外显学习之间的独立性是相对的,它们之间存在紧密的联系和相互作用,任何一个学习任务都是内隐和外显学习的结合物。最后,作者结合自己的实验研究进一步提出了,内隐学习和外显学习之间相互权衡的动态关系。     

Self-relevance increases the irrelevant sound effect: Attentional disruption by one's own name

Memory performance is severely disrupted when task-irrelevant sound is played during item presentation or in a retention interval. Working memory models make contrasting assumptions on whether the semantic content of the auditory distractors modulates the irrelevant sound effect. In the present study, participants made more errors in serial recall when they had to ignore sentences containing their own name as opposed to that of a yoked-control partner. These results are only consistent with working memory models that allow for attentional processes to play a role in the explanation of the irrelevant sound effect. With repeated presentation the disruptive effect of one's own name decreased, whereas the disruptive effect of the auditory distractors in the control condition remained constant. The latter finding is most consistent with the duplex model of auditory attention, which assumes that the irrelevant sound effect is primarily caused by automatic interference of acoustic distractor features, but at the same time allows for a disruption of encoding due to attentional capture by unexpected deviants. However, to explain the present results, the mechanism responsible for the attentional capture has to be extended to highly (self-)relevant auditory distractors.     

从"相"到"象"——熊十力哲学的易学归向

佛学中的“相”是纯粹形式,是无实质的空架子,“缘生说”将物我剖割为这些空架子,因而,物我之“现相”空、生命空、世界空。《易》之“象”是有生命意味、有实质的形式,它之生命意味源于物我本身固有的对立统一元素之间的相反相成。“象”有自体,因而,它不可还原为其他存在。物我所现之“象”皆真实不虚。熊十力由援“象”人“相”,到将“相”“象化”,展示了他出入佛老,彻底皈依儒宗的思想历程。     

大学生地域歧视现象态度量表的编制及信效度检验

地域歧视现象的存在是违背和谐社会理念的,人们对此现象是什么态度?研究以费施贝因和阿扎吉提出的理性行为模型理论为基础,选取网络上最活跃的大学生为样本,编制了大学生地域歧视现象态度量表,构建了对地域歧视现象态度、对地域歧视者态度和对被歧视者态度3个维度。通过整理访谈资料、参考相关量表、专家讨论等方法编制条目。选取358名被试进行预测试,617名被试正式测试。研究结果表明,大学生地域歧视现象态度量表建构的3个维度结构合理,量表的项目分析、探索性分析和验证性分析符合心理测量学要求,是测量中国大学生地域歧视现象态度的有效工具。