广西罗城仫佬族自治县特色农业现状与发展对策

罗城仫佬族自治县特色农业经济有鲜明的特色,发展罗城仫佬族自治县特色农业经济就必须坚持资源开发与市场需求的统一,找准罗城仫佬族自治县特色地方农业经济与市场对接的着力点,培育罗城仫佬族自治县特色农业经济产业链条,实现以本地农业特色产业带动罗城仫佬族自治县经济的整体发展。     

“十一五”期间地方财政收入结构变化及其可持续增长的路径选择——基于新疆伊犁州直的分析

＂十一五＂期间,我国克服了经济过热、国际金融危机冲击、严重自然灾害、物价持续上涨等多重困难,国民经济保持了平稳较快发展,综合经济实力不断提升,财政收入①结构也发生了相应调整。本文通过对＂十一五＂期间新疆伊犁州直财政收入规模和结构变化的分析,揭示地方财政收入结构存在的深层次问题,并找出解决的途径。     

十堰商用车零部件产业集群区域竞争力研究

本文对十堰市商用车零部件产业布局、产业结构等方面对其竞争力进行分析,据此提出发展的相关路径,希望对增强十堰市商用车零部件产业核心竞争能力起到一定的借鉴作用.     

自动化集中装车系统的应用与改进

本文通过对九矿储装运装车环节进行改造,引进了自动化集中装车系统,结合九矿现有站场的实际状况,对调车环节进行了过道岔改造以及车号识别电子监控的补充,完善了自动化装车系统。改造后,九矿储装运能力大为改观。     

平板车设计要点及技术发展趋势

从过程上介绍非道路用平板车的设计过程,详细介绍了平板车4个主要组成部分的设计要点,它们中既有实践摸索出的经验设计也有很强的理论依据。平板车的发展趋势即以特大型平板车设计开发以及用拉杆来转向且带行车制动平板拖车设计开发的设计制造技术等。     

农产品物流安全应急决策支持系统研究

针对农产品物流安全的特点，围绕运输车辆、农产品腐烂等突发事故，集成Internet GIS、无线数据传输、无线通讯等信息化技术，构建了分布式应急决策支持系统（DDSS）。最后基于GPS／GIS／GSM（3G）技术，以车辆调度为例阐述了典型功能区的远程数据采集与决策管理实现。     

Socio-economic determinants of helmet-wearing behaviour in Pune city,India

This study was an attempt to investigate the socio-economic determinants of helmet wearing in an urban setting of India. A household survey using multistage cluster random sampling was conducted among 9014 individuals in Pune city from March 2008 to February 2009. Among 2259 individuals who reported driving two-wheeled vehicles, 1509 (66.8%) reported possession of a helmet, and among those who had reported possession of a helmet, only 700 (46.0%) reported regular use of helmets. The results of multiple logistic regression analysis showed that residence, type of family, gender and socio-economic status were significantly associated with possession of helmet, and gender, residence and family type were significantly associated with regular helmet use while possessing one. In conclusion, this study showed that helmet-wearing behaviour is mostly influenced by the neighbourhood environment and norms and family and peer influence on behaviour rather than education and economic status.     

海浪干扰条件下的AUV惯性导航初始对准方法研究

分析了系泊在母船上的AUV捷联惯导(SINS)初始对准算法,建立了海浪干扰条件下AUV的姿态摇摆运动方程,对母船静止和母船晃动情况下AUV的SINS初始对准过程进行了仿真实验。仿真结果表明,在母船静止情况下失准角能很快收敛;在海浪干扰条件下失准角误差出现了周期性晃动,但晃动幅度较小,达到了AUV的SINS初始对准精度要求。     

An optimal approach for a set covering version of the refueling-station location problem and its application to a diffusion model

This article deals with the refueling-station location problem for alternative fuel vehicles in a traffic network. Alternative fuel vehicles can be characterized by the vehicle range that limits the travelable distance with fuel at full capacity. I propose an efficient formulation of the refueling-station location problem using an optimal property and prove that the problem is NP(Non-deterministic Polynomial)-complete in the strong sense. I consider a special case of the refueling-station location problem in which the construction costs are equal for all nodes. In this case, the problem is to determine refueling station locations to minimize the total number of stations, while making the possible multiple predetermined origin–destination round-trips. I propose an optimal algorithm applicable when no refueling stations currently exist in a traffic network and a dynamic programming based algorithm applicable when a set of refueling stations already exists. I apply the algorithms to a traffic network to study the diffusion of refueling stations and predict the speed and range of station establishment. The computational experiments show that the speed of diffusion depends on the vehicle range and the sequence of the origin–destination demands considered in the diffusion process.     

唐山市汽车尾气污染控制对策研究

论述了唐山市机动车排放污染对城市空气质量恶化所产生的极大影响,以及机动车尾气排放污染物对人体健康的影响,提出了关于控制和治理机动车污染的建议和应采取的措施。