C/S基础上的声像档案管理信息系统设计

综合分析了当今档案软件现状及发展趋势,根据需求的分析确定了基于Client／Server体系结构的应用模型,建立了以数据库管理系统为核心的声像档案信息管理系统,并详细介绍了通用模块、文书与声像档案模块的开发．     

师源性心理因素对外语学习者语言焦虑的影响

语言焦虑是影响学生外语学习效果的一个重要情感因素。通过对师源性心理因素引起的语言焦虑的判断与分析,我们不难发现语言学习中的情感因素不可忽视,教师对语言焦虑的觉察和调控在组织教学中不可或缺。事实上教师的行为既可以造就“焦虑诱导情境”,也可以以良性的情感信息刺激学生,对已经存在的语言焦虑进行有效的调控。     

试析张学良发动西安事变的原因

张学良发动西安事变,原因有三:一是强烈的息争御侮爱国思想和自我牺牲精神的促使;二是对蒋介石“攘外必先安内”政策认识上质的变化和他与蒋介石矛盾激化的结果;三是中国共产党统战政策的感召和全国抗日救亡运动的推动。一、二是内因,三是外因。     

Categories as Rhetorical Barriers and the Federal Response to Hurricane Katrina

I explore the role of categories as rhetorical barriers in organizations responding to crisis (Veil, 2011 Veil, S. R. (2011). Mindful learning in crisis management. Journal of Business Communication, 48(2), 116–147. doi:10.1177/0021943610382294[Crossref] , [Google Scholar]). I analyze some problematic categories of the Department of Homeland Security (DHS) and the Federal Emergency Management Agency (FEMA) and the categories’ impact on the organizations’ response to Hurricane Katrina. My analysis shows that unintended and perverse consequences (Giddens, 1984 Giddens, A. (1984). The constitution of society: Outline of the theory of structuration. Cambridge, UK: Polity Press. [Google Scholar], 1987 Giddens, A. (1987). Social theory and modern sociology. Stanford, CA: Stanford University Press. [Google Scholar]) reversed the power of a key legitimated category (Orlikowski, 1995 Orlikowski, W. J. (1995). Categories: Concept, content, and context. Computer Supported Cooperative Work, 3, 73–78.[Crossref] , [Google Scholar]; Giddens, 1984 Giddens, A. (1984). The constitution of society: Outline of the theory of structuration. Cambridge, UK: Polity Press. [Google Scholar]) and exposed a set of reified categories (Giddens, 1984 Giddens, A. (1984). The constitution of society: Outline of the theory of structuration. Cambridge, UK: Polity Press. [Google Scholar]).     

Dynamic analysis of a high-speed train operating on a curved track with failed fasteners

A high-speed train-track coupling dynamic model is used to investigate the dynamic behavior of a high-speed train operating on a curved track with failed fasteners. The model considers a high-speed train consisting of eight vehicles coupled with a ballasted track. The vehicle is modeled as a multi-body system, and the rail is modeled with a Timoshenko beam resting on the discrete sleepers. The vehicle model considers the effect of the end connections of the neighboring vehicles on the dynamic behavior. The track model takes into account the lateral, vertical, and torsional deformations of the rails and the effect of the discrete sleeper support on the coupling dynamics of the vehicles and the track. The sleepers are assumed to move backward at a constant speed to simulate the vehicle running along the track at the same speed. The train model couples with the track model by using a Hertzian contact model for the wheel/rail normal force calculation, and the nonlinear creep theory by Shen et al. (1984) is used for wheel/rail tangent force calculation. In the analysis, a curved track of 7000-m radius with failed fasteners is selected, and the effects of train operational speed and the number of failed fasteners on the dynamic behaviors of the train and the track are investigated in detail. Furthermore, the wheel/rail forces and derailment coefficient and the wheelset loading reduction are analyzed when the high-speed train passes over the curved track with the different number of continuously failed fasteners at different operational speeds. Through the detailed numerical analysis, it is found that the high-speed train can operate normally on the curved track of 7000-m radius at the speeds of 200 km/h to 350 km/h.     

女书歌谣中的女性形象

女书是一种独特的女性文字,女书作品大多是诗体唱本。在这些作品中,出现了个性鲜明的女子形象,众多的女性形象构成了女书中江永女性的整体风貌。这些女性性格特点的形成与江永长期受到儒家文化的浸润及其瑶汉杂居的环境有关。     

概率布尔网络的动态行为研究

概率布尔网络是布尔网络的拓展。布尔网络和概率布尔网络已经广泛应用于生物系统模拟中。运用马尔科夫链模拟概率布尔网络的动态行为及采用消除趋势波动分析（DFA）方法,分析概率布尔网络的长程相关性特性发现,概率布尔网络的动态行为具有长程相关性,大部分概率布尔网络能呈现1/f波动,且产生1/f波动的噪声值和范围比布尔网络的大。     

理性本体论视域下的环境影响评价公众参与

发挥哲学的解释和批判功能,依靠哈贝马斯交往行动理论,发现理性的丰富内涵和多重维度,阐释交往理性的规范意义和批判功能;论证生活世界的社会意义产生功能和对系统的矫正作用。发生在生活世界中的公众参与是对环评技术活动的规范和约束,是保证环评行政决策具备合法性的唯一条件,是道德实践意识在环评活动中的表现。     

复方丹参片早期干预对APP/PS1转基因小鼠学习记忆的影响

目的：探讨复方丹参片早期干预对APP/PS1转基因小鼠学习记忆的影响及作用机制。方法：4月龄野生型小鼠和APP/PS1转基因小鼠分别灌胃给予溶剂或药物8周后,采用新物体识别实验和跳台实验评价复方丹参片对小鼠行为学表现的影响;应用ELISA检测小鼠海马β淀粉样蛋白（β-amyloid protein,Aβ）Aβ40、Aβ42的含量;采用Real time PCR和Western blot分别检测胰岛素分解酶（insulin degrading enzyme,IDE）/脑啡肽酶（neprilysin,NEP）m RNA和蛋白水平的变化。结果：新物体识别实验结果显示,复方丹参片720 mg·kg-1显著性增加APP/PS1转基因小鼠对新物体的识别指数。跳台实验结果显示,复方丹参片720、360 mg·kg-1显著性减少APP/PS1转基因小鼠学习次数,此外,复方丹参片720 mg·kg-1明显增加小鼠在平台的停留时间。ELISA结果显示,复方丹参片720、360 mg·kg-1显著性降低APP/PS1转基因小鼠海马Aβ40、Aβ42水平。Real-time PCR结果显示,复方丹参片720 mg·kg-1显著性上调APP/PS1转基因小鼠海马IDE和NEP m RNA的表达。Western blot结果显示,复方丹参片720 mg·kg-1显著性增加小鼠海马IDE蛋白表达。结论：复方丹参片可改善APP/PS1转基因小鼠学习记忆能力,可能与减少海马Aβ水平和增加IDE的表达有关。     

Positive Effects of Bilingualism: Divergent Thinking and Its Implications for Language Education

The issue of bilingualism has been widely explored in the past decades,showing that there are multiple positive effects of"additive bilingualism".Such positive factors are closely linked with children’s cognitive development and intelligence.This paper gives a detailed review on how bilingualism plays a role in children’s divergent thinking ability.Fully taking advantage of such positive effects in language education should be a significant part for bilingual education and foreign language programs.Thus,this paper further discusses the educational implications of these theoretic findings,suggesting that an additive bilingual environment should be cultivated through multiple ways of curriculum and program planning.