高职机械类专业电工电子教学的探索与思考

本文简述了目前高职机械类专业电工电子教学所存在的问题,围绕如何改善教学方法、提高教学质量提出自己的一些方案。     

The lived experiences of orphaned learners in South Africa: implications for the provision of quality education

Learners living in impoverished communities and subjected to the kind of disadvantage in operation in their home environment are at risk of receiving education of an inferior quality. The situation is worse for orphans, especially those residing in poor communities in that they bring to school peculiar attributes which poses challenges for the South African government in its endeavour to provide quality education for all. This paper presents constructed narratives of four primary-school learners living in a poor community in South Africa. The narratives are presented from the perspectives of the learners themselves, teachers and caregivers. These narratives reveal that following the death of parents, orphaned learners experience emotional changes, increased responsibilities, safety concerns as well as absence of learning support in the case of sibling-headed households. We argue that the challenges they experience in their home environment impact negatively on learning at school. We, therefore, propose that the extended family and the community serve as resources in providing needed support for promoting positive educational experiences to these learners.     

基于物联网和ZigBee的智能家居系统设计

利用物联网和ZigBee技术设计了一个智能家居系统,使家居常用的分立设备通过无线网络进行组网、通信,构成一个相互联系、协同操作的整体,实现家居环境参数监控、防盗自动报警、火灾自动报警、燃气泄漏报警等,给用户带来最大程度的高效、便利、舒适与安全。     

电机学的教学改革与实践

针对电机学课程理论性强、难学以及课时压缩等特点,精炼教学内容,优化教学手段,改进教学方法;针对实验设备套数少、陈旧、维修滞后以及使用实际设备实验的局限性,引用仿真实验,激发学生的学习兴趣。     

郑州市机动车新车入户量预测研究

对郑州市2009～2012年机动车新车入户量的数据进行一阶弱化算子处理,然后建立新车入户量的灰色模型GM(1,1),并预测了未来5年郑州市机动车新车入户量.     

基于概率神经网络的SF6电气设备故障诊断

SF6电气设备存在放电故障时,内部的sF6气体会分解成诸多衍生物,对设备的安全运行造成隐患．因此,通过SF6衍生物的状态可以推断设备的放电故障．在已有实验数据的基础上,将SF6衍生物的状态作为神经网络的输入,放电故障作为神经网络的输出,构建了基于概率神经网络的SF6电气设备故障诊断模型．实验表明,构建的模型对放电故障的预测达到88．23％,并与BP神经网络模型的预测结果进行了比较,证实了在SF6电气设备故障诊断的研究中,概率神经网络要优于BP神经网络．     

新生代农民工面临的困境与对策研究

新生代农民工问题是我国经济社会发展中必须面对的一大难题。本文对新生代农民工的概念及特点加以阐述,分析了新生代农民工面临的主要困境及其成因,并提出了问题解决的相应对策。     

基于Modelica的机电传动接触器控制系统

采用Modelica语言在MWorks平台中建立了接触器模型,实现了接触器控制系统并进行了点动和长动仿真。仿真结果表明,电动机制动和启动的不同特点。不采取任何制动措施时,电动机停转是一个较长的过程,电动机启动过程很短并有一定波动。建立的仿真模型可以弥补实验室硬件之不足。     

电气信息专业实验教学改革研究与实践

按照我国建设创新型国家、走新型工业化道路的战略要求,结合东华大学电气信息专业学生的实际情况,开展电气信息专业实验教学改革研究与实践。旨在加强学生在校期间实践能力培养,尤其是学生实践创新能力和创新精神的培养,逐步形成一个突出实践和创新精神培养的电气信息专业实验教学体系,形成理论实践结合、课内课外结合、校内校外结合、产学研结合的系列化实践教学模式,为国家和社会提供德才兼备、基础宽厚、实践能力强、具有创新精神的电气信息专业工程型人才。     

UNDERSTANDING ORDINARY WOMEN

The paper reflects on the ways market research in Britain helped produce understandings of and information about the ‘mass housewife’ in the 1950s and 1960s. The paper does this through a case study of the market research used and generated by the London subsidiary office of J. Walter Thompson advertising. The paper focuses on key client accounts, as well as the agency's non-product specific research, as a way of exploring how it sought to understand the ordinary housewife and her consumption habits. In exploring JWT London's approach to the ‘mass market’ housewife, the paper draws on recent sociological arguments about advertising and market research that have conceptualized these commercial practices as technologies or socio-technical devices for ‘making-up’ the consumer. However, the paper also seeks to revise certain aspects of this sociological approach. It does this by proposing a more differentiated sense of the various marketing and market research paradigms that were used by advertising agencies in order to contest the claim that post-war market research was subject to growing sophistication under the influence of the psychological sciences. Secondly, the paper seeks to bring a more international and specifically trans-Atlantic dimension to the understanding of post-war market research. US-derived techniques formed a visible presence within post-war British market research and constituted a key point of reference for British-based practitioners. This influence was neither totalizing nor did it go unchallenged, but even as they rejected elements of ‘American’ approaches to the consumer, British practitioners still had to reckon with their intellectual authority and commercial force in this period.