智能汽车专业校企合作模式及人才培养方式的探究

智能汽车已经成为未来汽车领域的发展方向,且高校逐渐与企业合作,建立智能汽车人才培养模式。但是现阶段,校企合作深度以及人才培养方式仍然存在一定的不足,不利于为智能汽车领域输送更多的人才。基于此,本文主要探究智能汽车专业校企合作模式以及人才培养模式,详细阐述智能汽车专业校企合作模式及人才培养模式中存在的问题,进而提出针对性的建议。     

城市轨道交通停车换乘设施选址研究

从选址和规模2方面考虑新建和扩建城市轨道交通停车换乘设施,采用基于路径的用户平衡配流模型和多方式配流方法,建立了基于投资最小化的城市外围停车换乘设施选址模型。     

某运动器材公司建设项目职业病危害控制效果评价

目的识别生产过程中产生的职业病危害因素,评价其控制效果。方法通过职业卫生现场调查、工作场所职业病危害因素检测等方法,进行评价。结果该建设项目存在的主要职业病危害因素为二氧化氮、一氧化碳、臭氧、二氧化锡、噪声等。除电动葫芦机噪声点强度超过国家标准外,其余职业病危害因素检测结果均符合国家标准。结论该项目为严重危害项目,其控制措施是有效的。     

Hub location with flow economies of scale

A characteristic feature of hub and spoke networks is the bundling of flows on the interhub links. This agglomeration of flows leads to reduced travel costs across the interhub links. Current models of hub location do not adequately model the scale economies of flow that accrue due to the agglomeration of flows. This paper shows that current hub location models, by assuming flow-independent costs, not only miscalculate total network cost, but may also erroneously select optimal hub locations and allocations. The model presented in this paper more explicitly models the scale economies that are generated on the interhub links and in doing so provides a more reliable model representation of the reality of hub and spoke networks.     

Congestion and pollution consequences of driving-to-school trips: A case study in Beijing

Parents compete for high-quality education for their children by enrolling them in good schools. However, in a Chinese mega-city like Beijing, three factors jointly lead to the spatial separation between schools and homes: the centralized public goods provision mechanism, the historical dependency in school location, and the constrained supply of housing in downtown. Without an adequate number of school buses, this spatial separation of schools and homes triggers the numerous long-distance driving-to-school trips by private vehicle during workday morning rush hours in Beijing. We use the start and end dates of “school holiday” as exogenous repeated shocks to the aggregate traffic congestion, and employ the two-stage least squares (2SLS) regression approach to examine the congestion and pollution consequences of such driving-to-school trips in Beijing. We find that, all else being equal, workdays during school holidays have a traffic congestion index 20% lower than that of non-school-holiday workdays. Such a sharp reduction in congestion leads to a significant decrease in PM₁₀ concentration. Policymakers should lower such “extra” congestion and environmental costs via optimizing the spatial balance between school supply and demand.     

谈港口国船舶污染物接收设施问题报告的处置

文中探讨了一起国际航行船舶关于港口国船舶污染物接收设施问题报告的调查情况,介绍了此次船舶污染物接收设施问题报告的原因分析及采取的措施,并向接收设施的提供者和使用者给出了优化建议,明确了各有关部门在港口国船舶污染物接收设施履约工作上的重点。     

A multi-objective optimization model for sustainable logistics facility location

This paper offers an exploratory study of sustainable facility location. The methodology, based on the classical uncapacitated facility location problem, provides decision makers with a multi-objective optimization model to determine the trade-off among economic, service and environmental considerations. Our results indicate that it may be desirable to open more facilities than optimal from a narrow economic perspective to reduce the carbon dioxide emissions of transport and to improve service reliability.     

脑弥漫性轴索损伤实验装置的研制及动物模型的建立

目的 自制一种脑弥漫性轴索损伤(DAI)装置并成功建立DAI动物模型.方法 自制头颅瞬间旋转损伤装置,使大鼠头颅在瞬间(<3ms)旋转90°造成剪切损伤.观察损伤后大鼠的生命体征及行为学改变;于伤后2、6、12、24、36、72h及10d分别处死损伤组动物,制备脑石蜡切片,行镀银及HE染色,光镜下观察神经轴索变化.结果 伤后大鼠均即刻出现原发昏迷,其中2只于损伤后20min内死亡,余持续时间1-30min不等;伤后大鼠呼吸节律紊乱,瞳孔对光反射减弱或消失,醒后均有程度不等的反应性下降,肢体活动迟缓;肉眼可见广泛蛛网膜下腔出血或脑室出血;光镜下可见皮髓交界区、胼胝体区、脑干、小脑白质等部位的神经轴索有不同程度的肿胀、断裂、轴索球形成,后期有小胶质细胞增生,局部呈巢样聚集.结论 本装置能造成大鼠脑DAI,且具有简便、可控、确切的特点,适合进行中、小型动物DAI模型的实验研究.     

华东交通大学学生体育消费状况的调查与分析

采用文献资料法、问卷调查法、数理统计法等研究方法,对华东交通大学学生体育消费水平、结构、制约因素等进行分析研究,发现该校学生的体育消费水平低下,并且以实物消费为主,但对体育运动具有相当的兴趣;该校学生已形成一定的体育消费价值观体系,但仍需在体育教育中进一步引导;经济拮据因素是学生体育消费的主要制约因素,对校园公共体育设施存在较强的依赖性.该调查结果对高校体育设施建设及体育教学改革具有一定的借鉴意义.