基于S3C2440的LXI总线高速数据采集模块的设计

为了实现分布式网络自动测试系统的数据采集部分,设计了LXI总线的高速数据采集模块。该设计采用AD9224作为S3C2440的外部A/D转换器,FIFO作为高速缓冲存储区,S3C2440作为主处理器,CPLD作为协处理器实现数据采集的逻辑控制和高速数据传输。完成了基于嵌入式linux的B类LXI高速数据采集模块,实践表明,该模块工作稳定、性能可靠。     

教育的科学发展观与优先发展观

科学发展观是马克思主义中国化最新理论成果,也是中国特色社会主义事业的指导思想。其第一要义是发展,依赖于人的发展,依赖于教育功能对于社会人的塑造。因而贯彻落实科学发展观必须优先发展教育,也需要教育优先发展。教育优先发展需要教育事业内部不断改革创新,需要大力倡导全民素质教育,要求广大干部树立正确的政绩观。     

公交车最佳乘车路径优化算法

公交乘客出行路径选择是公交乘客信息系统的关键技术,而公交车最佳路径算法是路径选择的基础,目前公交车最佳路径的算法有很多种,算法的区别在于数据存储的结构,各个数据存储结构有各自的优点与不足,基于唐山市公交基础信息和实际生活中公交乘客出行的特点,设计了合乎乘客需求的最佳路径查询的算法。提出以换乘次数最少为首要目标,在此基础上以出行距离最短为第二目标的算法。可将其用于公交公司的管理系统中,也可以用于公交公司查询服务系统中。     

落实教育的优先发展地位，为建设科学发展试点市提供智力支持

湛江要建设城乡协调,生态文明的科学发展试点市,必须要把教育摆在优先发展的战略地位,深刻认识和把握湛江教育发展面临的新机遇、新挑战,实现湛江基础教育资源的均衡配置,促进城乡教育的均衡发展,大力发展职业教育,努力构筑产学研合作的市场服务平台,把实施科教兴市、开发人才资源作为发展先进生产力的第一要务,为建设科学发展试点市提供强大的智力支持。     

优先保障:教育优先发展的实践诉求

我们以往对于教育事业优先性的理解总是和发展直接相连的.通过对我国教育系统的现实分析,使得教育系统的生存问题凸现出来.在教育优先性的考量中,教育生存问题是先于教育发展问题的.政府在落实教育优先发展战略过程中,优先保障生存也应先于优先发展.     

当前新农村建设中存在的问题及对策

建设社会主义新农村是一项极其复杂的系统工程和长期任务。对新农村建设存在着许多理解上的偏差。本文拟从建设重点、建设主体、建设的整体协调、建设的长期性等四个方面阐述理解上的偏差,并提出了相应的解决问题的对策及思路。     

钢筋网尺寸参数对配电房母排磁场屏蔽效能的影响研究

住宅小区的配电房内母排会对上层住户空间及邻近建筑物产生电磁干扰,因此需采用一定的屏蔽方案对其进行屏蔽。钢筋混凝土结构常被用来屏蔽母排产生的磁场,而不同尺寸大小的钢筋网其屏蔽效能不同,实际工程屏蔽方案需综合考虑成本与屏蔽效能。文章中以一典型配电房为俐,根据母排实际参数建立其工频磁场计算模型,分别计算了建筑物只采用混凝土（不带钢筋同）、采用不同大小的钢筋网格以及不同型号的钢筋时,母排在上层住户空间产生的磁场,并计算了各种辱蔽措施的屏蔽效能。计算结果显示钢筋网格越小,屏蔽效能越好;钢筋直径增大,屏蔽效能也明显增大。     

Configuration design, energy management and experimental validation of a novel series-parallel hybrid electric transit bus

This paper aims to present the configuration design approach and the energy management strategy （EMS） of a series-parallel hybrid electric transit bus （SPHEB） jointly developed by Shanghai Automotive Industry Co. Ltd. （SAIC） and Shanghai Jiao Tong University （SJTU）, China. A major feature of this SPHEB is that a novel manual transmission is designed to switch the powertrain configuration between series and parallel types. To reduce the fuel consumption as well as sustain the battery state of charge, an EMS including seven energy flow modes is designed and applied to this SPHEB. Governed by this EMS, the engine is maintained to operate in high efficiency regions. The experimental test carded on the transit bus city driving cycle is described and analyzed. The experimental results demonstrate the technical feasibility and fuel economy of this approach.     

车载CAN总线技术及应用

CAN总线作为一种车载网络,因其可实现信息共享、可靠性高、通信速率快等优点,使汽车的结构及其各项性能发生了很大变化,今后汽车普遍采用CAN总线技术,是汽车发展的一个必然趋势。     

School bus travel is associated with bullying victimization among Canadian male,but not female,middle and high school students

Previous research has found a link between active school transportation and bullying victimization among school-aged children. However, the link with other school travel modes (such as car, school bus, and public transportation) and bullying victimization is largely unknown. The purpose of this study was to investigate the association between school travel mode and report of bullying victimization among Canadian middle and high school students. The sample consisted of 5065 students aged 11–20 years (mean age: 15.2 ± 1.9 years; 56% females) who participated in the 2013 Ontario Students Drug Use and Health Survey (OSDUHS). Overall, 24.7% of students reported school bullying victimization in the past year. Females (27.2%) were more likely than males (22.3%) to be victims of school bullying (p < 0.01). After adjustment for age, ethnicity, subjective socioeconomic status and parental education, multivariable logistic regression analyses indicated that, compared to active school transportation, school bus travel to (adjusted odd ratio (OR) = 1.83; 95% confidence interval (CI) = 1.25–2.68) and from (OR = 1.79; 95% CI = 1.70–2.67) school was associated with greater odds of bullying victimization among males, but not females. However, the use of public transportation to get to school was associated with lower odds of bullying victimization compared to active transportation among females only (OR = 0.59; 95% CI = 0.36–0.97). These findings suggest that school travel mode should be considered when considering risks for bullying victimization. Bullying prevention efforts should target school buses to make children's commute a safe and enjoyable experience.