基于多属性决策的航空兵作战方案选择研究

在对作战方案优选相关问题进行数学描述的基础上,针对优选作战方案中存在的各属性权重信息、决策者权重信息及方案属性值信息不完全的问题,建立了基于离差多属性灰色关联分析的航空兵作战飞机作战方案评估模型,避免了进行作战方案优选时决策者权重信息先验给定不足的缺陷,具有一定的实用性和通用性,为作战方案的优选提供更实用的方法.     

使用氢气作为内陆水路燃料调查研究(英文)

Escalating apprehension about the harmful effects of widespread use of conventional fossil fuels in the marine field and in internal combustion engines in general, has led to a vast amount of efforts and the directing of large capital investment towards research and development of sustainable alternative energy sources. One of the most promising and abundant of these sources is hydrogen. Firstly, the use of current fossil fuels is discussed focusing on the emissions and economic sides to emphasize the need for a new, cleaner and renewable fuel with particular reference to hydrogen as a suitable possible alternative. Hydrogen properties, production and storage methods are then reviewed along with its suitability from the economical point of view. Finally, a cost analysis for the use of hydrogen in internal combustion engines is carried out to illustrate the benefits of its use as a replacement for diesel. The outcome of this cost analysis shows that 98% of the capital expenditure is consumed by the equipment, and 68.3% of the total cost of the equipment is spent on the solar photovoltaic cells. The hydrogen plant is classified as a large investment project because of its high initial cost which is about 1 billion US$; but this is justified because hydrogen is produced in a totally green way. When hydrogen is used as a fuel, no harmful emissions are obtained.     

More robust and better: a multiple kernel support vector machine ensemble approach for traffic incident detection

This paper presents a multiple kernel support vector machine (MKL‐SVM) ensemble algorithm to detect traffic incidents. It uses resampling technology to generate training set, test set, and training subset firstly; then uses different training subsets to train individual MKL‐SVM classifiers; and finally introduces ensemble methods to construct MKL‐SVM ensemble to detect traffic incidents. Extensive experiments have been performed to evaluate the performances of the four algorithms: standard SVM, SVM ensemble, MKL‐SVM, and the proposed algorithm (MKL‐SVM ensemble). The experimental results show that the proposed algorithm has the best comprehensive performances in traffic incidents detection. To achieve better performances, the proposed algorithm needs less individual classifiers to construct the ensemble than SVM ensemble algorithm. Thus, compared with SVM ensemble algorithm, the complexity of the ensemble classifier of the proposed algorithm is reduced greatly. Conveniently, the proposed algorithm also avoids the burden of selecting the appropriate kernel function and parameters. Copyright © 2013 John Wiley & Sons, Ltd.     

双塔式空气干燥装置在城轨车辆上的应用

结合大连快轨3号线城轨车辆的运用经验,介绍了城轨车辆制动系统内水汽的形成原因,分析、探讨了解决降低系统内水汽含量的解决办法.并介绍了制动系统所采用干燥装置的类型、日常维护和常见故障分析,并对故障所带来的危害性进行阐述.     

船舶EEDIweather中系数fw的快速预报方法研究

随着能效设计指数（EEDI）的强制实施,船舶节能减排日益受到重视,对新造船舶的性能提出了更高的要求.IMO相继出台的EEDIweather自愿导则能够更全面地衡量船舶在风浪中的能效指标,其中系数fw对EEDIweather的计算有重要影响.为建立fw的快速预报方法,在设计阶段初步评估了船舶性能,进行了系列耐波性模型试验,并以试验结果为基础,结合ITTC推荐的阻力推力法（RTIM）计算了fw.应用多元回归分析得到fw的经验公式,经验证有良好的工程应用价值.     

地铁车站施工竖井开辟多个工作面工序设计

为缓解地面空间紧张和控制投资,尽可能减少暗挖地铁车站施工竖井的设置,并利用已有竖井开辟更多的工作面,使得各工序统筹合理、稳步推进。以北京地铁10号线某站施工竖井为切入点,突破传统意义上的竖井在单向开设工作面的结构型式,在1个竖井上开辟多个工作面,优化工序设计,使开挖和受力转换相对合理。在没有增加投资的情况下,确保了竖井和风道的施工进度,保证了周围既有建、构筑物的安全。     

基于双层规划的多次运输供应采购模型

同时考虑供应商和订货商的利益,以供应商为主方,订货商为从方,建立了基于双层规划的供应采购模型.供应商依靠产品定价影响下层的决策来获得最大利润,而订货商决定订货批量以及每个订货批量要求的运输次数来使自身成本最低,进而影响供应商的决策.根据模型特点设计了基于遗传算法的求解方法,并用数值算例验证了模型和算法的有效性.     

城市出租汽车保有量预测分析

分析影响出租车分担率的因素,选择出影响分担率的主要因子,把主要因子作为多元线性回归模型中的自变量,得出分担率预测模型,然后基于分担率预测模型得出基于供需平衡的出租车保有量预测模型。最后以重庆市为例,运用SPSS软件作线性回归分析,利用模型预测出2015年重庆主城区出租车的分担率,将分担率代入供需平衡模型,预测出2015年重庆主城区出租车的合理保有量。     

基于多元智能理论的任务型教学法在高职英语教学中的应用

本文探讨了在多元智能理论构架下的英语任务型教学法在高职英语课堂教学中的运用。针对学生的多种智能特点设计教学任务,在学生完成任务的过程中培养学生的智能和提高学生听、说、读、写、译等方面语言综合运用能力。     

海上货物运输权利转让制度之比较研究

海上货物运输的权利转让制度关系到运输方和货方等各方的基本利益,权利主体、内涵、转让程序和效力等构成其主要内容。《鹿特丹规则》采取权利义务转让同步为一般,＂异步转让＂为补充的原则,继承和发展了以往国际货物运输公约,探索、完善海上货物运输的权利转让制度,对未来国际航运业、金融业等经营活动产生多重影响。