Determination of Peierls stress from acoustic harmonic generation

The interaction of acoustic waves with dislocations leads to aperiodic oscillations in the magnitude of the acoustic nonlinearity parameter β as a function of the acoustic drive amplitude σ _ampl. The magnitude and spacing of the oscillations depend on the value of the Peierls stress. A least-square curve fit of the β(σ _ampl) equation to experimental data taken of 99.999% pure aluminum monocrystals oriented for wave propagation along the [1?0?0] crystal axis yields the value 6.2?×?10⁴?Pa for the Peierls stress. The value is consistent with the smallest values reported in the literature for aluminum where for both theoretical and experimental studies the reported values range over three orders of magnitude.     

局部表象产生中行为性别差异的神经基础

行为研究发现女性具有更好的局部表象产生能力, 但其神经基础尚不清楚。研究采用事件相关电位技术以及小世界网络分析方法, 探索局部表象产生中性别差异的大脑信息加工基础。结果显示在局部表象产生中, 女性行为反应较男性更快, 表象产生诱发的P300-650平均波幅更小, 且大脑功能网络的平均路径长度更短。深入分析发现, 反应时与脑网络的平均路径长度之间成正相关。该结果意味着低耗高效的大脑信息加工模式是女性具有更好的局部表象能力的神经基础。     

The Universe as a Saturated Phenomenon: The Christian Concept of Creation in View of Modern Philosophical and Scientific Developments

Abstract

The article develops an argument that the Christian concept of creation of the world, being an issue of the modern dialogue between theology and science, must be rethought and reformulated along the lines of recent advancements in cosmology and philosophy. It is argued that the prevailing natural attitude to the issue of the creation of the universe (whether based on Biblical hermeneutics or scientific theories) is philosophically inadequate because it does not account for the facticity of the articulating consciousness, which itself is the modality of the created. Correspondingly, the issue of creation receives a different interpretation: it is the coming into existence of personal life in the Divine image, capable of recognizing its createdness, and articulating creation as hypostatically distant from the comprehending subjectivity. Creation as inseparable from the life of subjectivity thus acquires the status of a saturated phenomenon to which neither successive quantitative, nor qualitative synthesis, nor temporal synthesis can be applied; it also escapes a rubric of relation. The created world, or the universe as a whole, gives itself to us from its own “self” to such an extent that it affects us, changes us and almost constitutes us, and stages us out of its own giving itself to us. The universe is present in the background of our existence through relationship and communion in such a way that we can express this presence ecstatically—through music, painting, poetry etc.—that presence which cannot be formalized in definitions of physics and mathematics. It is the living humanity that is the only and ultimate manifestation of God through its creation.     

新生代员工自杀意念的产生机理

新生代员工的自杀意念正在引起研究者的关注.本研究立足于职业健康心理学和积极心理学视野,汲取自我决定理论和生命意义理论的思想精髓以构建“动机-生命意义”模型,系统考察社会、组织和个体因素对自杀意念的综合影响,对揭示无精神疾患员工自杀意念产生的影响机制和心理动力机制、促进研究范式从病理取向转向积极取向具有重要的理论价值;此外,还有望开发出一套“社会-组织情境→动机→生命意义”干预方案,引导企业与政府反思其现有管理体系,帮助管理者审视其管理哲学并改善其管理行为,针对尚无自杀意念或意念处于萌芽期的员工,多层次、多途径构建员工自杀的一级防控体系和心理援助机制,促进员工与企业、社会的整体和谐发展.     

基于项目自动生成的认知诊断测验开发

认知诊断、项目自动生成是现代心理测量领域的重要发展领域,二者的结合更是心理测量领域亟待开展的重要课题。本研究以小学数学问题解决认知诊断项目自动生成为例,探讨认知诊断领域的项目生成技术及算法。研究发现：(1)计算机自生成的项目参数与原模板参数具有较高的一致性。(2)同一项目模板下生成的不同试题的测量学特征基本不变。(3)同一批被试在自动生成的两份试卷的前、后测的能力( )值高度相关(r=0.811),前、后两次对被试诊断结果的一致性高达86.5%。这表明本文所设计的认知诊断测验项目的自动生成技术及其算法基本可行,小学数学问题解决认知诊断项目的自动生成效果较好。这也为其它认知诊断领域的项目自动生成提供了技术借鉴和支持。     

新生代知识员工队伍的工作家庭冲突——基于人口特征差异交互效应的视角

本研究以来自高科技企业的500名新生代知识员工为样本,采用单因变量多因素方差分析法揭示了工作家庭冲突的人口特征差异,以及不同人口特征变量之间的交互效应。检验结果表明：（1）新生代知识员工的工作家庭冲突存在显著的性别差异与工龄差异,而职位层次差异并不显著;（2）工作家庭冲突的性别差异分别与工龄差异、职位层次差异之间存在显著的二维交互效应;（3）性别差异与工龄差异、职位层次差异之间存在显著的三维交互效应。     

谋事在人，成事在天——新生代农民工的适应策略及可协商命运观的影响

以珠海及宁波两地439名新生代农民工为对象,使用问卷法考察了他们的适应策略、生活结果（社会文化适应状况和主观幸福感）及命运观对适应策略选择的影响。结果发现：（1）整合策略是被调查者主要使用的适应策略,可协商命运观是被调查者主要持有的命运观;（2）持有可协商命运观的个体更多选择整合策略;（3）使用整合策略的个体具有更积极的社会文化适应状况和更高的主观幸福感;（4）可协商命运观对生活结果的积极影响可通过更多使用整合策略、更少使用分离和边缘化策略完全中介。     

A longitudinal analysis of self-regulation and well-being: avoidance personal goals, avoidance coping, stress generation, and subjective well-being

We conducted 2 longitudinal meditational studies to test an integrative model of goals, stress and coping, and well-being. Study 1 documented avoidance personal goals as an antecedent of life stressors and life stressors as a partial mediator of the relation between avoidance goals and longitudinal change in subjective well-being (SWB). Study 2 fully replicated Study 1 and likewise validated avoidance goals as an antecedent of avoidance coping and avoidance coping as a partial mediator of the relation between avoidance goals and longitudinal change in SWB. It also showed that avoidance coping partially mediates the link between avoidance goals and life stressors and validated a sequential meditational model involving both avoidance coping and life stressors. The aforementioned results held when controlling for social desirability, basic traits, and general motivational dispositions. The findings are discussed with regard to the integration of various strands of research on self-regulation.     

信息量和明显度对规则可获得性的影响

该研究探索了规则的信息量与明显度对规则可获得性的影响。采用改编后的2-4-6任务, 70名大学生参加了两个实验。实验1发现, 规则可获得性除了受到信息量的影响外, 还受到明显度的显著影响; 实验2增加了规则的探测, 发现信息量大、明显度高的规则更容易用语言陈述出来, 而信息量小、明显度低的规则更不容易陈述出来。实验结果启示：信息量大、明显度高的规则可能是一种外显规则, 而信息量小、明显度低的规则可能是一种内隐规则。初步提出了“计算和感知的双加工”模型。     

消化性溃疡中医治疗的思路与方法

消化性溃疡的中医病机为本虚标实,虚、瘀、毒为其最基本的病理特点,治疗应抓住虚、瘀、毒的病理实质,采取健脾和胃补虚、活血通络止痛、解毒导滞和胃的治疗方法,并结合脾胃脏腑的功能特点,灵活运用调达肝木、升清降逆之法以调畅脾胃的功能,从而达到治愈消化性溃疡的目的。