浅谈教师如何将课堂育人落到实处

如何将课堂育人工作落到实处是每一位教师都要思考和解决的问题,教师自身素质的提高和完善非常重要。文章从人格魅力、教学方法以及提高学生整体素质等方面来讨论教师如何将课堂育人落实到实处。     

Numerical simulation and optimization design of the EGR cooler in vehicle

The EGR （exhaust gas recirculation） technique can greatly reduce the NOx emission of diesel engines, especially when an EGR cooler is employed. Numerical simulations are applied to study the flow field and temperature distributions inside the EGR cooler. Three different models of EGR cooler are investigated, among which model A is a traditional one, and models B and C are improved by adding a helical baffle in the cooling area. In models B and C the entry directions of cooling water are different, which mostly influences the flow resistance. The results show that the improved structures not only lengthen the flow path of the cooling water, but also enhance the heat exchange rate between the cool and hot media. In conclusion we suggest that the improved structures are more powerful than the traditional one.     

Microstructure of ferrospheres in fly ashes: SEM, EDX and ESEM analysis

Ferrospheres in fly ashes from a coal-fired power plant were extracted by a magnetic separation technique and their microstructure was studied by scanning electron microscopy （SEM）, energy dispersive X-ray analysis （EDX） and environmental scanning electron microscopy （ESEM）. Ferrospheres in fly ashes show significant iron enrichment compared to their respective fly ashes. Iron oxides in ferrospheres mainly occur as minerals magnetite （Fe3O4） and hematite （α-Fe2O3）, which are derived mainly from the decomposition and oxidation of iron-bearing minerals in coal during combustion. EDX data indicate that ferrospheres also contain Si, S, Al and Ca resulting from quartz, mullite, anhydrite and amorphous materials. A large percentage of ferrospheres are commonly 5-50 μm in size. The microstructure of ferrospheres includes smooth, polygonal, dendritic, granular and molten drop characteristics. SEM coupled with EDX provided fast and accurate results of the microstructure and chemical composition of ferrospheres, and helped us to assess environmental issues related to the disposal and utilization of fly ashes.     

Time-domain training sequences design for MIMO OFDM channel estimation

This paper describes a Least Squares （LS） channel estimation scheme for MIMO OFDM systems based on time-domain training sequence. We first compute the minimum mean square error （MSE） of the LS channel estimation, and then derive the optimal criteria of the training sequence with respect to the minimum MSE. It is shown that optimal time-domain training sequence should satisfy two criteria. First, the autocorrelation of the sequence transmitted from the same antenna is an impulse function in a region longer than the channel maximum delay. Second, the cross-correlation between sequences transmitted from different antennas is zero in this region. Simulation results show that the estimator using optimal time-domain training sequences has better performance than that using optimal frequency training sequence at low signal-to-noise ratio （SNR）. To reduce the training overhead, a suboptimal training sequence is also proposed. Comparing with optimal training sequence, it has low computation complexity and high transmission efficiency at the expense of little performance degradation.     

排球课堂教学中踝关节损伤的防与治研究

如何防治排球课堂教学中发生的踝关节损伤,是多年来排球教育者非常关心的问题。本文通过对排球课堂教学中踝关节的损伤机理、预防措施和治疗方法探究,提出了一套较为科学完善的防治排球课堂教学中踝关节损伤的实施方案,以期为今后的排球课堂教学和训练及运动创伤的防治提供有益参考。     

对规范施工项目管理的思考

工程项目是施工企业的“窗口”、生产和管理的基点、经济效益的源泉．以工程项目管理为中心,提高项目的运作质量,是施工企业生存和发展永恒的主题。当前施工企业工程项目管理仍然存在诸多问题,不能适应形势发展的需要。结合近些年来工程项目管理的实践经验,探讨加强工程项目管理的一些问题。     

“一带一路”背景下我国高职院校海外办学路径探索研究——以联合申办海外大学模式为例

我国高职院校在"走出去"进行海外办学方面具有独特优势和地位,其办学目的:一是服务国家"一带一路"倡议,二是推动职业教育国际化深入发展,三是解决高职院校人才培养供需矛盾。在面对本科院校海外办学竞争压力大,高职院校海外办学时间短等困难的情况下,我国高职院校探索出校企联合和"政行校企"多方联合申办海外大学这一极具中国特色的办学路径。这种模式的优势在于整合资源,合力办学,集中优势,彰显特色,拓展了我国高职院校海外办学的思路。     

由四种生物大分子代谢联络图分析物质代谢的特点

介绍一张适用于总结四种生物大分子分解代谢的联络图,并从物质代谢的开放性、统一性与特异性、整体性、阶段性、区域性、组织器官特异性、调节性和有序性方面总结归纳了代谢的特点。     

内蒙古软件产业发展对策研究 ——基于宁夏、内蒙古软件产业发展数据对比分析

本文通过对宁夏和内蒙古两个自治区七年软件与信息技术服务产业发展数据的对比分析,发现内蒙古软件及信息技术服务产业正逐步被宁夏赶超,从产业政策、研究与试验发展(R&D)经费投入、产业人才支撑环境、政策落地执行力、高等教育投入等多个维度分析了制约内蒙古软件与信息技术服务产业发展的诸多因素,基于总书记在内蒙古系列讲话精神指导下,提出了内蒙古发展软件及信息技术服务产业的对策建议,并在内蒙古软件及信息服务产业发展路径上提出了较为系统的整体化解决方案.     

企业知识整合研究

本文首先定义了企业知识整合的概念并探讨对企业知识整合的必要性和重要性，在此基础上提出了知识整合可以通过建立知识整合平台、重视知识挖掘、强调知识分享、建立基于对等知识联网的柔性组织等来实现。