高校学生普及夜间定向训练研究

通过文献资料调研、问卷调查、专家访谈、案例分析、逻辑归纳等方法,简要综述国内外夜间定向、国内普通高校夜间定向训练现状,研究分析我国普通高校开展的夜间定向训练优势及制约因素,最后结合教学实践提出若干建议。     

宁波市高校开展定向运动的可行性研究

根据定向运动对促进高校体育发展的作用,分析了宁波市高校开展定向运动的可行性,同时也阐述了宁波市高校开展定向运动所面临的一些困难和问题,以期更多的人走向户外、走向大自然去参与这样一种集健身性、趣味性、刺激性、娱乐性与一身的体育项目.     

Online and Offline Algorithms for the Time-Dependent TSP with Time Zones

The time-dependent traveling salesman problem (TDTSP) is a variant of TSP with time-dependent edge costs. We study some restrictions of TDTSP where the number of edge cost changes are limited. We find competitive ratios for online versions of TDTSP. From these we derive polynomial time approximation algorithms for graphs with edge costs one and two. In addition, we present an approximation algorithm for the orienteering problem with edge costs one and two.     

An improved method for the hot strip mill production scheduling problem

In most research on the hot strip mill production scheduling problem (HSMPSP) arising in the steel industry, it is accepted that a schedule with lower penalty caused by jumps of width, hardness, and gauge will result in lower roller wear, so it is regarded as a better schedule. However, based on the analysis of production processes, it is realised that rolling each coil also cause roller wear. In order to assessing the roller wear associated with production scheduling more precisely, it is necessary to consider it as another factor besides those jumps, especially when complicated constraints are involved. In this paper, an improved method is proposed to quantify the expected wear of the rollers done by those jumps and rolling processes. Then the HSMPSP whose objective is to maximise the total length of all scheduled coils is formulated as a team orienteering problem with time windows and additional production constraints. A heuristic method combining an improved Ant Colony Extended algorithm with local search procedures dedicated to HSMPSP is developed. Finally, computational results on instances generated based on production data from an integrated steel mill in China indicate that the proposed algorithm is a promising solution specific to HSMPSP.     

Enjoy the most beautiful scene now: a memetic algorithm to solve two-fold time-dependent arc orienteering problem

Traditional route planners commonly focus on finding the shortest path between two points in terms of travel distance or time over road networks.However,in real cases,especially in the era of smart cities where many kinds of transportation-related data become easily available,recent years have witnessed an increasing demand of route planners that need to optimize for multiple criteria,e.g.,finding the route with the highest accumulated scenic score along(utility)while not exceeding the given travel time budget(cost).Such problem can be viewed as a variant of arc orienteering problem(AOP),which is well-known as an NP-hard problem.In this paper,targeting a more realistic AOP,we allow both scenic score(utility)and travel time(cost)values on each arc of the road network are time-dependent(2TD-AOP),and propose a memetic algorithm to solve it.To be more specific,within the given travel time budget,in the phase of initiation,for each population,we iteratively add suitable arcs with high scenic score and build a path from the origin to the destination via a complicate procedure consisting of search region narrowing,chromosome encoding and decoding.In the phase of the local search,each path is improved via chromosome selection,local-improvement-based mutation and crossover operations.Finally,we evaluate the proposed memetic algorithm in both synthetic and real-life datasets extensively,and the experimental results demonstrate that it outperforms the baselines.     

高校开展校园定向运动的实践研究

定向运动是一项体能与智慧融一体的户外体育运动项目。文献资料及教学实践研究结果表明:定向运动教学能促进学生的心、肺功能及肌体各组织器官的协调发展,有利于提高学生灵敏性、反应能力、耐力素质,对培养和锻炼学生独立思考、应变和判断能力具有促进作用。     

浙江开展学生定向运动竞赛的现状与发展对策研究

采用文献资料法、专家访谈法和数理统计法,对浙江省6届学生定向比赛和3届精英巡回赛进行了统计和调查,分析浙江开展学生定向运动比赛存在的主要问题,并提出解决问题的办法,以期对改进定向比赛的组织工作,提高定向运动竞技水平有所裨益。     

定向运动实践中的拓展训练价值

定向运动能培养锻炼人的勇敢顽强精神、提高人的智力水平,其功能体现拓展训练的价值.基于定向运动的拓展训练研究符合高校课程改革的需要,能充分挖掘学生的潜能和创造力,能培养大学生良好的心理素质和团队意识,对大学生素质的拓展具有重要意义.     

成都市高校开设《定向运动》课程现状分析

本文运用教育学、体育学,以及课程与教学论的知识,以成都市已经开设了《定向运动》课程的7所高校为研究对象,分析成都市高校定向运动教学的现状,探讨定向运动在成都市高校进一步推广与发展的对策及措施。     

Integrating public transportation in personalised electronic tourist guides

Personalised electronic tourist guides (PETs) are mobile hand-held devices able to create tourist routes matching tourists' preferences. Transportation information has been identified as one of the most appreciated functionalities of a PET. We model the tourist planning problem, integrating public transportation, as the time-dependent team orienteering problem with time windows (TD-TOPTW) in order to allow PETs to create personalised tourist routes in real-time. We develop and compare two different approaches to solve the TD-TOPTW. Experimental results for the city of San Sebastian show that both approaches are able to obtain routes in real-time.