不正常航班恢复模型的贪婪模拟退火算法研究   总被引：4，自引：0，他引：4  

唐小卫  高强  朱金福 《预测》2010,29(1):66-70

为解决不正常航班恢复对航空公司带来的严重影响,研究了不正常航班恢复模型及其优化算法,对现有不正常航班恢复优化模型提出适当改进,重点设计了一种贪婪模拟退火算法。算法融合了GRASP和模拟退火算法的特点,提高了领域解的选择效率并且降低了陷入局部最优解的概率。实例证明这种算法可以处理大规模的不正常航班恢复问题,并且能够达到时间代价与结果质量的均衡。  相似文献   

航班超售下旅客权益保护问题探讨     

张军 《内江师范学院学报》2009,24(7):27-29

航班超售这项国际惯例引入我国航空客运市场后,民航局、航空公司相关制度建设滞后,大多数旅客对航班超售显得十分陌生。因航班超售致使旅客行程延误,难免会产生纠纷,旅客容易出现过激行为。这就需要民航局等相关部门、航空公司、机场等部门以及旅客自身的共同努力,构建和谐的民航消费环境,才能达到多赢的局面。  相似文献   

Professional knowledge learned and professional knowledge applied: A case study of two trainee English teachers     

Sue Brindley  Fran Riga 《English in Education》2009,43(1):68-85

This article reports on one strand of a collaborative research project undertaken at the Faculty of Education, which sought to explore trainee teachers' development of assessment understandings and practices during their PGCE, and over the following two years. Using two case studies of English trainees, we explore the ways in which they seek to bring together effective assessment principles embedded in the research literatures they encountered in their training with the classroom focused, 'tried and tested' approaches in their placement schools. The resulting demands on professional knowledge 'pure' and 'applied', and some resulting tensions are investigated though interviews with the trainees concerned.  相似文献   

Video Enhanced Reflective Practice (VERP): supporting the development of trainee educational psychologists’ consultation and peer supervision skills     

Sarah Murray  Jane Leadbetter 《Educational Psychology in Practice》2018,34(4):397-411

This article aims to seek trainee educational psychologists’ (TEPs) views about their experiences of using Video Enhanced Reflective Practice (VERP) to support their professional development, with a particular focus on consultation and peer supervision skills for the VERP guider. Participants engaged in three cycles of VERP, reflecting upon their practice using video clips of themselves. An action research design was implemented and views from trainee EPs and the Video Interaction Guidance (VIG) supervisor were sought, using semi-structured interviews. Hybrid Thematic Analysis was used in order to analyse the data. Findings suggest that VERP was generally a positive experience for trainees and their experiences highlighted the impact of observing themselves in practice, as opposed to retrospective reflection. Trainee EPs selected factors to consider within a ‘shared review’ and reflected on their experiences of being filmed, the strengths and the challenges of which are considered.  相似文献   

空中乘务专业教师人格魅力的塑造     

罗欢  贺云 《六盘水师范高等专科学校学报》2013,25(1):75-77

空中乘务专业教师的人格魅力对空中乘务专业学生的成长具有潜移默化的影响,对学生的人格形成和综合素质的提高起着关键作用,文章分析了空中乘务专业师资队伍的发展现状,并提出了人格魅力塑造的路径。  相似文献   

乒乓球飞行速度研究     

王云杰  张瑞勇 《体育科技文献通报》2013,21(2):30+50-30,50

在分析了影响乒乓球飞行速度的基础上,运用动量守恒定律来解释影响乒乓球被击打瞬间所获得初速度的大小的因素。从而提出,要提高乒乓球飞行速度,主要从以下几个方面进行:增强击球的力量、巧妙运用合力、提高击球瞬间的速度、击球点迎前、合理调整击球拍面;提高击球技术的合理性和连续性、保证肌肉工作时的张弛有度。  相似文献   

基于CDIO理念的飞行英语ESL课程改革初探     

崔智安 《科教文汇》2013,(22):123-125

英语听说能力作为飞行学员在国外航校初始飞行训练及生活的工具,其能力的培养和形成,已不能完全依赖和延续传统教学观念和教学方法。随着CDIO工程教育模式的引入和推广,为飞行英语ESL课程改革提供了依据和新的思路。本文拟从民航飞行员培养的实际需求出发,通过对教学实践的反思,在CDIO工程教育模式理论指导下,摸索一条飞行英语ESL系列课程教学的新路。  相似文献   

The effect of periodized resistance training on accelerative sprint performance     

Gavin Moir  Ross Sanders  Chris Button  Mark Glaister 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(3):285-300

The purpose of this study was to assess the effect of periodized resistance training on accelerative sprint performance. Sixteen physically active men participated in a randomized controlled study. An experimental group (n = 10) completed an 8-week periodized resistance training intervention, while a control group (n = 6) did not train. Pre- and post-training measures of 20-m straight-line sprint time, including a 10-m split, maximum strength, and explosive strength, were recorded. Flight time, stance time, stride length, and stride frequency were quantified from digitized video recordings of the first three strides of the 20-m sprint. Resistance training resulted in significant increases in maximum strength (parallel back squat: 19%) and explosive strength (6–10%). However, both groups increased 0–10 m sprint times (experimental group = 6%; control group = 3%) while 10–20 m times were reduced (experimental group = 7%; control group = 4%), highlighting the mechanical differences between the distinct sprint phases. The change during the 0–10 m interval was accompanied by a reduction in stride frequency during the first three strides. Strength coaches should be aware that the potential benefits of increased muscular strength during short sprints are likely to be affected by mechanical specificity and that improvements in sprinting performance may not occur immediately after a period of resistance training.  相似文献   

中美航线飞越北极最短时间     

张占锋  王庆禄 《唐山师范学院学报》2006,28(2):75-77

利用把不定长转化为定长和建立数学模型的方法,借助空间立体图形、函数、控制测量学、计算机编程及物体间相互运动等知识,解决了从北京到底特律飞行航线最短,应用于实际中。  相似文献   

实习教师社会化行为模式探究   总被引：2，自引：0，他引：2  

欧璐莎  吕立杰 《课程.教材.教法》2012,(5):117-122

为了促进实习教师的社会化发展进程,在对以往关于实习教师社会化行为的研究成果进行梳理的基础上,本文以某省属师范院校音乐实习教师为研究对象,根据教育实习具体情境中实习教师的行为特点,归纳出"实习教师社会化行为螺旋嵌套模式",揭示了实习教师社会化行为发展的特殊性。  相似文献