翻转教学在算法设计与分析中的应用研究

"算法设计与分析"是计算机科学与技术专业的一门核心课程,是一门理论与实践相结合的课程。传统教学中,该课程主要以教师课堂授课,学生听讲为主,对于基础参差不齐的学生,其授课效果大打折扣。为此提出在算法设计与分析课程的教学过程中,采用翻转课堂代替传统课堂,强调以学生为主体,调动学生的学习积极性,不搞一刀切模式,以问题为导向,引导学生自主学习,课堂互动解疑。文章就教学目标、教学内容、翻转课堂、考核形式四个方面提出了策略。教学实践证明,该教学方法可以明显提高教学效果。     

职业技能考证项目培训课程的网络教学融合应用与创新

以Moodle平台为依托,为职业技能考证实训教学环节构建了一个引领学生在线自主学习的网络模式,其主要特色是以课程理论为基础,以校企参与制定的人才培养计划作为主要课程内容,以合作企业作为教学的组织形式,并且将三者有机融合形成体系,以此进行理论与实际的一体化教学;同时融合网上异步教学理念形成一套崭新的教学模式。     

基于Agent的网络教学系统设计

应用智能Agent技术,针对现有网络教学系统的弱点与不足,结合其原有的优点,进行了网络教学系统的设计。阐述了此系统的总体结构设计和系统设计,总体结构引用三层模型,包括用户层、中间通信层和服务层;在系统设计中给出了用户Agent设计、教学站点设计、移动Agent设计,构造了一个基于Agent技术的网络教学系统模型。     

一个网站信息发布系统的设计与实现

分析并实现了基于PHP技术构建的政府信息发布系统设计模式,包括信息发布类网站系统的开发设计、总体结构、功能实现等。采用了盒式模型和MVC模式作为系统实现的核心技术。这种基于服务器储存模型的系统在响应速度上具有一定的高效性。网站设计实现后,简化了管理员对网站的更新维护工作,加快了网络信息的传播速度。     

将软件设计师考试融入计算机专业教学的方法

软件设计师考试是计算机技术与软件技术考试的中级资格考试,把软件设计师考试与计算机专业教学灵活地结合起来可以拓宽在校大学生的发展空间。基于参加2013年下半年软件设计师考试的经历,总结出了一些应对软件设计师考试的方法,并将这些方法融入计算机专业课程的教学。将软件设计师考试的知识点,特别是常见的设计模式引入实际的教学中取得了一定的成果。     

基于CloudStack的旅行社电子商务解决方案

对国内旅行社开展电子商务面临的问题进行分析,提出一种基于开源云平台的旅行社电子商务创新模式。该模式并不是云计算加电子商务的简单叠加,而是在成熟度最高的开源云平台CloudStack的基础上,设计出能对异构云平台进行整合的整合开发云,进而构建出旅行社电子商务公共服务平台,实现对平台内外的旅行社上游产品资源以及下游的客户信息的整合,旅行社可以根据自身的需求选择不同的商业模式,从而获取到高质量、低成本的电子商务服务,达到改进整个旅游产业运行体系和生态环境的目的。     

试谈中职游戏动漫专业对美工设计课程的能力要求

阐述了中职学校美工设计课程在教学设置中存在的问题,提出了相应的观点,论述了在中职学校美工设计课程的定位,培养具有一定综合素质和一技之长的中职学生。同时指出了传统的的教学课程结构已经不适应当今社会对人才培养目标的需要,必须进行课程改革,以适应社会发展的需求。     

Integrated Game Based Guidance with Nonlinear Autopilot Design for Maneuvering Target Interception

The integrated game theory based guidance law with nonlinear autopilot (GGNA) system is presented in this paper. The guidance law is designed based on linear differential game theory while considering the motion of the target in 3‐D space such that the distance between the missile and the target is minimized faster than before. The autopilot system based on quaternion representation is developed using sliding mode control method to generate the attitude command. The stability of the integrated guidance and nonlinear autopilot system is analyzed with Lyapunov stability theory. In addition, this research assumes wingless missiles in our context in order to reduce the nonlinear effect from the aerodynamics. Furthermore, in order to extend the operation range of missiles from endo‐atmosphere to exo‐atmosphere, the missiles are equipped with Thrust Vector Control (TVC) mechanisms and Divert Control System (DCS). Finally, extensive simulations incorporating aerodynamic models are demonstrated to verify the validity of the proposed integrated guidance/autopilot systems. Moreover, the simulation results reveal that the mission of intercepting a maneuvering target is successfully accomplished.     

Online double auction mechanism for perishable goods

One-sided auctions are used for market clearing in the spot markets for perishable goods because production cost in spot markets is already “sunk.” Moreover, the promptness and simplicity of one-sided auctions are beneficial for trading in perishable goods. However, sellers cannot participate in the price-making process in these auctions. A standard double auction market collects bids from traders and matches the higher bids of buyers and lower bids of sellers to find the most efficient allocation, assuming that the value of unsold items remains unchanged. Nevertheless, in the market for perishable goods, sellers suffer a loss when they fail to sell their goods, because their salvage values are lost when the goods perish. To solve this problem, we investigate the suitable design of an online double auction for perishable goods, where bids arrive dynamically with their time limits. Our market mechanism aims at improving the profitability of traders by reducing trade failures in the face of uncertainty of incoming/departing bids. We develop a heuristic market mechanism with an allocation policy that prioritizes bids of traders based on their time-criticality, and evaluate its performance experimentally using multi-agent simulation. We find out that our market mechanism realizes efficient and fair allocations among traders with approximately truthful behavior in different market situations.     

回归正交设计在PEK-C增韧酚醛树脂研究中的应用

采用计算机辅助回归正交设计的方法对酚酞型聚醚酮(PEK-C)增韧酚醛树脂进行研究，通过回归正交设计，对共混体系的组分配比和成型工艺参数进行优化，预测出最佳配比和工艺参数，并通过试验得到验证。