A first-principles study of the formation of θ′′ phase in Al–Cu alloys

The θ′′-Al₃Cu phase plays an important role in the precipitation process of Al–Cu alloys. This phase has a sandwich structure—every two {200}_Cu layers are separated by three {200}_Al layers. To analyse the formation mechanism of this structure, the elastic strain energy of the {200}_Cu and {200}_Al layers, and the chemical bonding energy that reflects the interaction between the electrons in Cu and neighbouring Al atoms are calculated and analysed by first-principles calculations, projected density of states and Bader analysis. Our computation results reveal that this sandwich structure is energetically preferred in the competition of elastic strain and chemical bonding energies. To minimise the elastic strain energy of {200}_Al and {200}_Cu layers, the {200}_Cu layers prefer being apart from each other, whereas the chemical bonding energy favours the opposite arrangement because the intermetallic bond between Al and Cu atoms may form through p-d hybridization.     

成功与失败限制性饮食者对食物加工的能量效应：注意偏向的眼动追踪

本研究通过眼动追踪考察两类限制性饮食者对食物注意偏向的成分。在高低能量食物分别和非食物配对时,成功者对高能量存在注意警觉（加速探测）-回避（早期和总体的回避）模式;失败者对高能量存在注意回避（早期定向回避）-维持（早期维持）模式,即在早期注意更少的定向于高能量,但一旦注意到就出现维持偏向。在高低能量配对时,成功者对高能量注意警觉（早期定向）-维持（早期维持）;失败者对高能量注意警觉（早期定向）-维持（早期、总体的维持) 。总体上,我们发现了不同亚类限制性饮食者对食物线索加工的能量效应,即失败者比成功者对高能量食物注意更多的眼动证据。     

意识和无意识活动的脑区能态理论

本文在脑的四个功能系统学说的基础上,提出脑区能态理论,研究有意识、无意识和潜意识。讨论有意识、无意识、潜意识的脑机制,指出有意识、无意识、潜意识的统一性。     

Impulse processing: a dynamical systems model of incremental eye movements in the visual world paradigm

The Visual World Paradigm (VWP) presents listeners with a challenging problem: They must integrate two disparate signals, the spoken language and the visual context, in support of action (e.g., complex movements of the eyes across a scene). We present Impulse Processing, a dynamical systems approach to incremental eye movements in the visual world that suggests a framework for integrating language, vision, and action generally. Our approach assumes that impulses driven by the language and the visual context impinge minutely on a dynamical landscape of attractors corresponding to the potential eye-movement behaviors of the system. We test three unique predictions of our approach in an empirical study in the VWP, and describe an implementation in an artificial neural network. We discuss the Impulse Processing framework in relation to other models of the VWP.     

Religion and the decision to donate organs: Exploring the potential role of religious leaders

The two‐step flow model of communication (Katz, 1957 ) suggests opinion leaders obtain critical information from the mass media and, in turn, communicate this information to interpersonal contacts such as friends, family and co‐workers. It is suggested that religious leaders (RLs) may serve as opinion leaders on the topic of organ donation by debunking donation myths, promoting donation during worship services, or communicating the benefit of donation to families faced with the opportunity to participate in living or cadaveric donation. The current study examined the personal knowledge, experiences, and willingness to communicate about organ donation in a sample of RLs (N = 59) in Rochester, New York. Structured interviews were conducted in summer and fall of 2009 with a random sample of RLs. Results indicate a disparity between RLs' expressed personal support for donation and their engagement in donor registration. Approximately one‐quarter of RLs have spoken about donation during a religious service and many indicate their knowledge is not sufficient to discuss organ donation in detail. Results elaborate on how RLs may be trained to serve as opinion leaders in the promotion of organ donation. Copyright © 2010 John Wiley & Sons, Ltd.     

自我损耗促进冒险行为

基于自我控制资源模型,本研究探讨了自我损耗对冒险行为的影响以及生理能量补充在其中的缓解作用。实验1和实验2分别通过“Stroop”和“非利手写作”任务操纵被试的自我损耗,两个实验均用气球模拟风险决策任务考察被试的冒险行为,并且通过摄入含有或不含有葡萄糖的柠檬水来操纵生理能量水平。结果发现,在排除无关变量后,高损耗者比低损耗者尽可能多地对气球进行充气以寻求奖赏(实验1和实验2),但饮用含葡萄糖的柠檬水能够有效降低这种反应(实验2)。该研究证实了自我损耗促进冒险行为,补充生理能量能有效缓解该效应。     

本土心理资本与职业幸福感的关系

职业幸福感是国内外学者和管理实践者关注的重要问题, 本文综合资源保存理论、工作要求-资源模型和本土心理资本理论, 构建并检验了本土心理资本对职业幸福感的影响模型。研究一通过访谈、问卷调查等方法研制了信效度较好的问卷, 1566名教师的调查结果表明, 本土心理资本包含事务型心理资本(希望、乐观和坚韧)与人际型心理资本(自谦、感恩、利他、情商/情绪智力和信心/自我效能)。研究二使用2280名教师的有效数据, 通过控制了其他变量影响后进行结构方程建模及交叉验证分析, 结果表明：(1)职业幸福感(工作投入、工作倦怠、离职意愿和工作满意度)的积极情感体验(工作投入)与认知评价(工作满意度)存在增益螺旋过程; (2)心理资本通过能量补充和动机激发双过程促进职业幸福感; (3)人际型心理资本通过一级、二级能量补充与动机激发过程影响职业幸福感; 事务型心理资本也通过一级、二级动机激发过程影响职业幸福感, 但是只通过二级能量补充过程影响职业幸福感。在中国文化背景下, 人际型心理资本对职业幸福感的作用更大。     

自我损耗：理论、影响因素及研究走向

自我的活动消耗心理能量后引起执行功能下降的过程称为自我损耗, 自我损耗是生活中诸多的适应不良现象的原因之一。近几年, 自我损耗理论在发生领域、损耗状态的时限和内在机制等方面均有所发展; 对自我损耗影响因素的探究主要集中于认知、情绪及人格特质等领域; 自我损耗后效的研究逐渐呈现出应用化的趋势。未来研究需要进一步探究自我损耗的机制, 对影响因素和损耗后效上存在的争议进行澄清, 并在测量工具上寻找突破以满足理论的发展需求。     

Reflections on the deBroglie–Bohm Quantum Potential

The deBroglie–Bohm quantum potential is the potential energy function of the wave field. The quantum potential facilitates the transference of energy from wave field to particle and back again which accounts for energy conservation in isolated quantum systems. Factors affecting energy exchanges and the form of the quantum potential are discussed together with the related issues of the absence of a source term for the wave field and the lack of a classical back reaction.