PVC双壁电缆波纹管全自动扩口机PC自控系统

该自控系统成功地运用台湾MEKON M28P型PC机,实现对长6米直径0.14米波纹管的加热、扩口及成型加工自动控制。具有扩口加工自动循环、翻管自动循环和点动调整三种工作方式;具有自动诊断、故障报警并显示故障部位、监控八处工作等多种功能;“加热时间”和“扩口时间”,可由指拨器在现场随时调节。自动工作循环周期为一分钟。     

世界优秀男子自由体操运动员成套动作编排特征研究

为世界男子自由体操成套动作的编排趋向及变化规律,优化我国运动员成套动作结构,。运用录像资料、文献资料等资料搜集方法和视频观察、数理统计等分析方法。发现单个E组以上难度动作比重增大,技巧连接以向前的＂挂串＂连接和向后的＂回笼＂连接为主,＂D＋D＂链接数量稀少,四种难度价值编排模式的特征各异。建议我国运动员应着重采用第三种编排模式,同时增加成套动作中单个E组动作数量及链接串数,注重开发＂D＋D＂难度链接。     

浅论低温地板辐射采暖系统的节能经济性

低温地板辐射采暖系统由于其热舒适性高，卫生条件好，热媒参数应用范围广等优点，近几年发展势头迅猛，本文通过外网热损耗的计算，将低温地板辐射采暖系统和普通散热器采暖系统进行了比较，结合采用分户热计量实际工程实测数据比较。得出低温地板辐射采暖系统的经济性。     

Discourse analysis in classrooms: approaches to language and literacy research

This study reports the results of an innovative assignment in which preservice teachers’ mental representations were examined through drawing floor plans of an “ideal middle-level mathematics classroom.” The 41 middle-level mathematics preservice teachers created two floor plans, one at the beginning of the semester and the other for the course final. An essay was also submitted describing how the final floor plan addressed the National Council of Teachers of Mathematics principle of Teaching. Participants designed and described floor plans that encouraged the use of inquiry and hands-on activities and technology as instructional strategies, focused on student learning styles and individual needs, established a comfortable, organized and safe learning environment, demonstrated flexibility in grouping strategies, and encouraged communication between peers and with the teacher. The essays also suggest that the preservice teachers’ emerging teacher identity was influenced by professional experiences such as field placements and peer lessons.     

住宅供热计量热价的研究

城镇供热体制制度改革的目标是逐步推进供热商品化、货币化，核心问题是完善供热价格形成机制。供热价格必须实行两部热价制，本文提出固定热价与计量热价的计算依据，两部热价比应以建筑节能为目标，鼓励供热用户行为节能。供热计量收费的热量表计量热量应考虑位置及户间传热量的综合修正。