构建开放教育教材管理与服务新体系--"开放教育教材管理与服务"研究项目中期报告

远程开放教育是电大的发展方向，建立与之相适应的教材管理与服务体系是当务之急。教材管理与服务体系的建立要以学生及其学习为中心，实现方便、快捷、经济的全方位服务，保证教学质量。本文阐述了开放教育教材管理与服务项目研究的重要性和取得的成效，并就开放教育教材管理与服务体系提出了初步的设想。     

Motion characteristics of novel floating foundation for offshore wind turbine

A novel floating foundation to support the NREL offshore 5 MW wind turbine was designed conceptually by combining the characteristics of barge and Spar. The main focus was structural design and hydrodynamic modelling. Based on this novel floating foundation, the hydrodynamic performance was investigated in the frequency domain and time domain by using the wave analysis software HydroD and DeepC from Det Norske Veritas. The frequency domain analysis was conducted to investigate the effects of the incident wave angle and water depth. The time-domain analysis was carried out to evaluate the response of the floating foundation under a selected operational condition. The hydrodynamic performances of this floating foundation with respect to time series and response spectra were also investigated in this study.     

中学英语听力、口语教学初探

外语教学中的“听”与“说”的教学是薄弱环节。如何从中学阶段开始提高学生的听说水平 ,一直是外语教学界的热门话题。要克服“费时多、收效慢”的弊端 ,应从实际出发 ,对听力与口语教学提出具体的操作手段 ,并通过有效的方法来提高学生的学习兴趣 ,从而达到提高听说能力的目的     

新时期韩国教育的重大改革与社会反映

韩国是我国的临国，虽然社会制度不同，但所遇到的社会难题和教育问题，诸如早期留学热、课外辅导热、教育不公、教师评价难、职业教育衰竭等十分相近。韩国与社会制度相同的欧美各国的教育改革也有所不同，每届政府都很重视教育问题，努力通过修订国家相关的教育法律、政策和采取有效的行政措施，积极推进多项教育改革，以解决学业负担重、教育质量下滑、社会不公等诸多社会难题，值得分析与借鉴。     

建设新农村重在培育新农民

建设社会主义新农村需要新型农民。新型农民必须具备较高的思想道德素质，较深的科技文化知识和敏感的市场意识。新型农民的培养一定要强化农村的文化建设、抓好文化知识和职业技术培训以及开展经营素质培训。真正造就有文化、懂技术、会经营的社会主义新型农民。     

Teacher and school characteristics and their influence on curriculum implementation

Reform‐based curriculum materials have been suggested as a mechanism to make inquiry‐based instruction more prevalent in secondary science classrooms, specifically when accompanied by comprehensive professional development (Loucks‐Horsley, Hewson, Love, & Stiles, 1998 ; Powell & Anderson, 2002 ). This research examines the implementation of a reform‐based high school chemistry curriculum in a large, urban school district. We explicitly consider the role of the teachers' knowledge and beliefs in their implementation of the reform‐based chemistry curriculum, as well as school level factors. Qualitative and quantitative data were collected in the form of beliefs interviews and classroom observations from 27 high school chemistry teachers. Analysis of the data revealed that implementation of the curriculum was strongly influenced by the teachers' beliefs about teaching and learning, and the presence of a supportive network at their school sites. © 2007 Wiley Periodicals, Inc. J Res Sci Teach 44: 883–907, 2007     

湖南"双师型"教师队伍建设的问题与对策

制度建设不完善，来源渠道单一，竞争激励机制与培训机制不健全是当前湖南省职业院校“双师型”教师建设的主要问题。建议制定“双师型”师资建设整体规划，构建相关资格认证体系，并从编制政策、来源渠道、培训体系、评审标准等角度进一步完善“双师型”教师培训保障体系。     

单调函数无穷限积分的几个特性

本文首先证明了：若ｆ（ｘ）为［ａ，∞）上的单凋函数，且收敛，则ｌｉｍｆ（ｘ）＝０。然后，利用这一结论，相继推得单调函数无穷限积分的其他一系列结果。     

Multi-objective aerodynamic optimization design of high-speed train head shape

To improve the aerodynamic performance of high-speed trains (HSTs) running in the open air, a multi-objective aerodynamic optimization design method for the head shape of a HST is proposed in this paper. A parametric model of the HST was established and seven design variables of the head shape were extracted. Sample points and their exact values of optimization objectives were obtained by an optimal Latin hypercube sampling (opt. LHS) plan and computational fluid dynamic (CFD) simulations, respectively. A Kriging surrogate model was constructed based on the sample points and their optimization objectives. Taking the total aerodynamic drag force and the aerodynamic lift force of the tail coach as the optimization objectives, the multi-objective aerodynamic optimization design was performed based on a non-dominated sorting genetic algorithm-II (NSGA-II) and the Kriging model. After optimization, a series of Pareto-optimal head shapes were obtained. An optimal head shape was selected from the Pareto-optimal head shapes, and the aerodynamic performance of the HST with the optimal head shape was compared with that of the original train in conditions with and without crosswinds. Compared with the original train, the total aerodynamic drag force is reduced by 2.61% and the lift force of the tail coach is reduced by 9.90% in conditions without crosswind. Moreover, the optimal train benefits from lower fluctuations in aerodynamic loads in crosswind conditions.