基于市场微观结构的证券市场分析

本文从市场微观结构角度出发,对我国证券市场进行分析,并与美国经验进行比较,发现中国证券市场引致股票交易的信息量较大、虚假信息多、信息消化快、市场无效等特点。     

换流站内冷水中铝离子的监测

各换流站直流工程内冷水处理系统均存在严重的腐蚀和沉积问题,经多方面分析,铝离子结垢比较严重,需要通过在线监测来进行及时预防.本文主要介绍内冷水中铝离子的在线监测方法.     

塑料异型材挤出模具中内筋的口模流道设计

本文结合数百套塑料异型材挤出模具设计经验,简述了在不同挤出速度下,塑料异型材挤出模具中的支撑型内筋、板材型内筋、突出物加强筋、十字花型内筋的模头流道结构和供料方式的设计和选择。     

Windows线程、窗口与消息内在机制研究

以线程为核心,以消息为主线,剖析了Windows线程、窗口与消息三者之间的内在关系。线程是进程的执行实体;窗口由线程创建,并隶属于线程;通过消息机制,线程、窗口、消息构成了一个有机整体;窗口的一切行为都是由消息为之驱动的。行文同时指出了一些需要关注的问题。该技术主题对于Windows操作系统平台软件的设计、开发具有重要意义。     

江西省都昌县矶山联圩内坡护坡方式选择及应用

滨湖圩堤选择人工草皮护坡，施工速度快，经费投入少，固土护堤效果好，美化改善生态环境，在圩堤工程建设中有较高的推广应用价值。     

Participation in Social Action.

Comments on the M. Krim article (see record 1963-04092-001), which discusses the participation of psychologists in demonstrations and social activism. While it is held to be acceptable for psychologists to participate in these actions as individuals, the author argues that it is not acceptable for psychologists to participate as psychologists, with explicit or implicit indication that psychological science is responsible for the social or political views of the psychologist. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Condensation and evaporation heat transfer of R410A inside internally grooved horizontal tubes

Heat transfer coefficient and pressure drop were measured for condensation and evaporation of R410A and HCFC22 inside internally grooved tubes. The experiments were performed for a conventional spiral groove tube of 8.01 mm o.d. and 7.30 mm mean i.d., and a herring-born groove tube of 8.00 mm o.d. and 7.24 mm mean i.d. To measure the local heat transfer coefficients and pressure drop, the test section was subdivided into four small sections having 2 m working length. The ranges of refrigerant mass flow density was from 200 to 340 kg/(m² s) for both condensation and evaporation of R410A and HCFC22, and the vapour pressure was 2.41 MPa for condensation and 1.09 MPa for the evaporation of R410A. The obtained heat transfer data for R410A and HCFC22 indicate that the values of the local heat transfer coefficients of the herring-bone grooved tube are about twice as large as those of spiral one for condensation and are slightly larger than those of spiral one for the evaporation. The measured local pressure drop in both condensation and evaporation is well correlated with the empirical equation proposed by the authors.     

368Q型发动机曲轴疲劳强度有限元分析

对一个轿车发动机的曲轴进行了符合实际情况的三维建模,校核了曲轴在交变截荷下的疲劳强度,并通过曲轴的疲劳试验对分析和计算结果进行了验证,对忽略惯性力,忽略相邻曲拐影响,忽略扭矩的简化模型分别进行了计算,得出了不同建模方法对计算结果精度的影响,对曲轴圆角形状优化,圆角应力分布和强化工艺等相关问题进行了探讨。     

Object Lessons: The Social Life of Temperance Banners

Banners were the primary textile of choice for Canadian members of the Woman’s Christian Temperance Union (WCTU) in the late nineteenth and early twentieth centuries. Drawing on the methodology proposed by Arjun Appadurai in The Social Life of Things, as well as on feminist scholarship by Rozsika Parker, Lisa Tickner, and Patricia Mainardi, among others, this article traces the various stages in the “social life” of a set of temperance banners that were rediscovered in 1984 at the bottom of a filing cabinet drawer. The primary objective is to illuminate not only the stages of the banners’ biography (Birth, Social Life, Hibernation, and Renaissance), but also the reasons why the banners were created (or born) in the first place, why they were perceived by members of the WCTU as important, even talismanic, objects, why they eventually lost their ostensible power, and why they could experience a Renaissance in the 1980s and 1990s. It is proposed that in order to understand this series of events, we must look closely at intersecting discourses related to gender, alcohol consumption, and textiles.     

Social value creation through digital activism in an online health community

The study explores how online health communities produce social value by uniting individuals under a common purpose, to advance healthcare in post‐conflict states. We selected MedicineAfrica – a digital platform known for creating social value by providing medical education in regions with under‐resourced healthcare systems – and drew on multiple data collection methods. We found that it is through a unique form of digital health activism that social value is created in this context. Drawing on a sociological understanding of digital health activism, we make the following contributions: First, we identify three types of non‐economic, social value: cognitive, professional and epistemic. Second, we indicate that social value creation is enabled by three emergent forms of digital health activism (ie, philanthropic, moral and reciprocal activity). Third, we elicit three enabling mechanisms explaining how these forms of activism are technically and socially afforded through the platform's connective capacity and emerging collective practices in tandem with its members' growing commitment. Our article contributes to the growing IS literature on digital activism by offering a framework that elucidates how digital health activism relates to social value creation. The article provides practical implications as to how platforms can enable sustainable online (health) communities.