Shear band evolution during large plastic deformation of brittle and ductile metallic glasses

Four monolithic metallic glasses (MMGs) with different plasticities varying from brittle to ductile behavior under unconstrained loading were subjected to small punch testing. All specimens undergo large plastic deformation with multiple cobweb-like shear bands under these conditions. The process of shear band evolution was carefully controlled and investigated. Plasticity of MMGs is characterized by equivalent plastic strain ε* (product of shear band density and critical shear offset). Thus, this article provides an experimental basis for a better understanding of the shear band evolution during plastic deformation of MMGs.     

Right Hemispheric Dominance of Creative Insight: An Event-Related Potential Study

The purpose of this study was to investigate the hemispheric effect of creative insight. This study used high-density ERPs to record participants' brain activity while they performed an insight task. Results showed that both insight solutions and incomprehension solutions elicited a more negative ERP deflection (N320～550) than noninsight solutions in the time window of 320～550 msec. Scalp ERPs and topographical maps revealed that the insight N320～550 exhibited a relative RH dominance, whereas the incomprehension N320～550 exhibited a relative midline dominance. Dipole source analysis showed that the generator of N320～550 elicited by insight and incomprehension solutions was localized in the right middle frontal gyrus and the right parahippocampus gyrus, respectively. These distinct spatiotemporal patterns involved in insight processing and incomprehension processing suggest that the observed N320～550 might reflect the processing of set-shift and the formation of novel associations. Moreover, the spatiotemporal pattern of brain activation associated with insight solutions supported the idea that the right hemispheric dominance theory of creative thinking also applies to creative insight.     

历史性转折与公共性吁求——马克思主义哲学的视域转换

马克思致力于"确立此岸世界的真理"[1],但他并不是让现存的哲学去趋近现实世界或让现实世界去趋近现存哲学,而是"双刃地对待现实世界和现存哲学"[2],其哲学思想围绕着"人的解放"直接地形成了形而上学批判与社会现实批判两大交互的主题.在我看来,马克思哲学的两大主题又是基于哲学的历史性转折和人类社会的公共性吁求而得以可能的.但到目前为止,这两者的关系并没有在马克思主义哲学中得到很好的阐释.当代哲学的形而上学批判任务已经基本完成,在一个哲学本可以"终结"的后形而上学时代,公共性成为突出的问题,马克思主义哲学的视域也正因之转换.近年来,随着我们研究的深入,这一转换已逐渐明晰了.     

Why more can be less: An inference-based explanation for hyper-subadditivity in bundle valuation

We conceptualize, develop, and test a multiple-item bundle valuation model through which decision makers are able to make inferences about the value of uncertain items based on the value of certain items. Results of four experiments indicate that bundling a low-value certain item with a high-value uncertain item, which are not substitutes, results in a bundle valuation lower than the value of the uncertain item alone. We refer to this highly unexpected and previously unexplained phenomenon as “hyper-subadditivity.” In addition we find that bundling a high-value certain item with a low-value uncertain item leads to superadditivity, even though the items are not complements. Hence, we find that when two objects are bundled together, and one has a more certain value, decision makers use the value of the certain item to infer the value of the less certain item. They might infer that the other (less certain) object must be worth an amount similar to the item with which they are paired. We further demonstrate that reducing uncertainty eliminates these effects, and that direct value inferencing (not simple numeric priming, nor inferences about quality) is the most likely mechanism driving these effects.     

论孟子哲学及其贡献

孟子认为,仁义价值等是人的本性。价值是人的标志。它具有首先性、主体性。诚是善良的人性本体的现实化。可是性善说显然无法自圆其说。这便是人性悖论。义内说表明,陈述同样具有主体性。主体对对象的把握方式是推恩。推恩是一种感应方式。被感应的对象,有时候被称为神。     

现象的本质

物、现象是主体运用自己的先验感知模式整理纯粹本体的结果。它具有现实确定性、质量性、合理性、时间性、空间性、生灭性、特殊性、有用、有利等属性。拥有这些属性的现象是人类知识的对象。现象是相对的,因此它的这些属性也都是相对的。同时,存在不仅仅有生生不息的纯粹本体,而且它的必然伴随物即现象也是存在的真谛。现象与纯粹本体一起共同构成存在的事实本体。纯粹本体、现象的分与合即一三三一圆融构成了存在的综合本体。纯粹本体论、事实本体论和综合本体论构成了中国古代形而上学史上三个不同的发展阶段。     

材料类型和任务可预测性在任务转换中的作用

以阿拉伯数字和汉字数字为材料,采用奇偶判断和大小判断任务交替呈现范式,考察材料类型和任务可预测性在任务转换中的作用。结果发现:(1)对阿拉伯数字和汉字数字的反应时无显著差异,转换代价差异不显著;(2)不可预测任务反应时显著长于可预测任务,转换任务和重复任务都显示了基于可预测性的准备效应。表明材料类型对任务转换无影响,重复和转换任务都存在一般的任务控制更新过程。     

关于初中学业不良者学业求助特征及相关研究

本研究通过问卷与学业测验方法对165名初中生进行了学业不良者学业求助特征及相关研究,其研究结果表明:初中学业不良者在学业求助对象选择上倾向于向同学求助;在求助态度衡量上,他们对求助益处的考虑较少;更能知觉到来自同学的自尊威胁;在求助方式的选择上更倾向于执行性求助。成绩-回避目标、低下的自尊与自我效能感等是学业不良者学业求助特征的影响因素。     

创造性测验的性别与材料差异效应

以415名中学生为对象,采用修订后的《青少年科学创造性测验》考察了创造力的性别差异,并分析了不同测验材料对创造性表现的影响。结果发现：（1）在创造性总体上高中生显著优于初中生,但不存在显著的性别差异;（2）在流畅性与灵活性方面不存在显著性别、年级差异,在独特性上性别和年级的交互作用显著,表现为高中男生得分显著优于女生,而初中性别差异不显著;（3）不同性质的测验材料对创造性的影响不同,言语任务方面不存在显著的年级、性别差异,而图形任务方面则是高中生显著优于初中生,男生显著优于女生。     

儿童返回抑制的研究进展

返回抑制是视觉选择性注意中的一种抑制现象,是人的一个重要的信息加工机制,是当前认知心理学研究的热点之一,本文主要介绍了近年来婴幼儿和儿童的返回抑制研究的内容和成果。