Designing for communication at work: A case for technology-enhanced boundary objects

In this article we conceptualise the challenges of communication between a mortgage company and its customers in terms of crossing boundaries between communities. Through an ethnographic study we first address the question: what are the challenges of communication between sales agents and customers of a mortgage company around mathematical artefacts? Insight into these challenges formed the basis for an intervention in which we designed technology-enhanced boundary objects (TEBOs) that were reconfigurations of problematic symbolic artefacts. Secondly, we ask what the sales agents learned from the intervention. The data suggest that the intervention with the TEBOs helped employees to develop a better understanding of the mathematics behind the mortgages they sold, and to improve communication with their customers.     

兰州市城区稳定边界层变化规律的初步研究

兰州市城区空气污染严重与其特殊的大气边界层密切相关。利用兰州市城区现有大气边界层探测资料 ,采用多种稳定度参数计算方法 ,统计分析了该市大气层结稳定度的时空分布规律及其与天气形势的关系 ,发现兰州市城区冬季大气稳定边界层日间存在发生或发展的特有现象 ,并探寻了其形成机制 ,从而为兰州市开展空气污染预报提供可靠的理论依据     

基于抽象协调性质层次的应急网络组织治理中的协调机制构建

针对应急网络组织治理的特征、协调方式的有效性等方面综合考虑,从试图达到较为理想的协调效果的目标出发,从治理基础和治理手段两方面分析,强调应急网络组织治理中协调机制的重要性,并从新的视角科学地构建出应急网络组织治理七层次协调机制,即:混合层、激励层、协商层、交易层、规约层、技术层、自治层。这7个层次对应说明了其协调问题的难易程度:混合层应当解决的是最难协调的问题,其次是激励层等,自治层应当解决的是最易协调的问题。协调问题的难易程度不同,协调目标的理想程度也不同,分别从协调问题的相对难易程度、协调目标的相对理想程度、协调问题的相对显性程度三方面展开论述。     

球磨工艺对活性炭孔结构及电化学性能的影响

The effects of particle size of activated carbon （AC） on its wettability, electrode coating technology and electric chemical performance were studied to assemble nonaqueous electric double layer capacitors （EDLCs） for high power requirements. The results show that the specific surface area and total pore volume of AC decrease from 2 137 m^2/g to 1 683 m^2/g, and 0.95 cm^3/g to 0.78 cm^3/g, respectively, if it is ball-milled for 8 h. The pore size distributions are similar in the range of 0.7 nm to 3.5 nm for different ball-milling time. There exists oxidation on the surface of AC during the ball-milling process and the ratios of O-C=O oxygen compositions increase whereas those of C-O, C=O decrease. The peeling strength of AC coated on current collector is almost inverse proportion with the particle size of AC as well as the resistance of EDLCs, and its capacitance decreases about 6%.     

现行人工合成材料面层田径场的设计、施工、监理与验收规范

针对目前《体育设施建设标准》只列出设计等级的原则、要求等不足,通过近年来上海市多个新建或改建体育场的实践总结,对人工合成材料面层田径场的设计、施工、监理及验收等具体实施过程,提出了明确的规范要求。     

Early stages in building hybrid activity between school and work: the case of PénArt

This formative intervention documents the emergence of a hybrid activity aiming at student engagement and academic achievement. In this context-bound study, early stages of this activity consisted in establishing PénArt meant to enable high school students with difficulties to start up their own business at school. It involved reaching agreements between a high school and a youth centre so that high school students engage in the production and selling of their branded t-shirt. At the frontiers of their respective activity system, students, youth workers, special education teachers and members of the school board took actions to cross boundaries and redefine their interrelations. Cultural historical activity theory was fruitful to document the development of a new object-oriented activity. Tensions and contradictions revelaled to be the key moments in the emergence of the hybrid activity. Expansive learning led us to understand that, in a conflicting situation, a collective’s agentive actions create an expansive form of learning and leads to a successful entrepreneurship experience. Change laboratory capacity to foster change for cooperative education in Quebec was successful. The students enrolled in a regional entrepreneurship contest and won it. That was a significant event for students with low self-esteem linked with their performance at school.     

高耸结构的风荷载试验研究

南京奥体中心的观光塔为一高耸结构,其风荷载是必须考虑的问题之一.由于观光平台及观光塔本身形状的复杂性,建筑规范无法准确给出其风荷载,因此需要在风洞中进行测压测力试验,以测定观光塔整体及局部风载,获得风场数据.文章介绍了整个试验过程,并对试验结果进行分析,根据各风向角下的风压分布特征给出了结构抗风设计和考虑载人时的最不利风向角与最大风压值,可为观光塔结构强度设计、电梯间及观光平台的玻璃幕墙设计提供风荷载依据.     

铝合金等离子体电解着色工艺的研究

通过对不同电解液成分和浓度的选取，制备氧化和着色兼容的微弧氧化膜。不同种类的电解液所得到的微弧氧化膜层颜色也不同，同种体系中的主要成分浓度的不同是影响生成微弧氧化膜速率和颜色的原因之一。     

一个基于数据仓库的通用情报处理系统模型

情报处理是情报学研究的重要组成部分。依据数据仓库的特性,对数据仓库在情报资源处理中的应用进行了可行性分析。利用情报处理主题的层次结构,建立了情报处理实例的多维概念模型,进而提出了一个通用的情报处理系统的实现模型。在数据仓库的基础上,整合了独立分散的信息资源并引入反馈机制,增强了情报搜集、处理、分析和服务能力,较好地发挥情报处理系统的作用,提高了情报处理的效率。