2005年上半年我国物流运行情况分析

从社会物流总额，社会物流总费用及其与GDP的比例，配送，流通加工、包装等现代物流业务，物流增加值，物流固定资产投资等5个方面，对2005年上半年我国物流运行总体情况进行了分析。     

2006年上半年我国物流运行情况分析

从社会物流总额,社会物流总费用的构成及其与GDP的比例,物流增加值,物流固定资产投资等4个方面,对2006年上半年我国物流运行总体情况进行了分析。     

对青藏铁路部分路段通风路基温度场的数值分析

青藏铁路穿越部分冻土路段 ,为保护冻土的热稳定性 ,部分路段采用了通风路基。本文焓法处理带相变的瞬态温度场问题 ,推导了其有限元格式。对青藏铁路中年平均气温在 - 4 .3℃ ,地表年平均温度 - 1℃的路段应用通风路基 ,未来 5 0年 ,在气温上升 2 .6℃的条件下 ,对通风路基的三维温度场进行了数值计算。并和普通的填土路基温度场进行了对比分析。认为在青藏铁路部分路段应用通风路基以增强其热稳定性是有效的。     

GIS理论与技术在"铁路调度管理信息网上发布"系统中的应用与研究

应用ComGIS与WebGIS技术解决实现人工绘制调度图到计算机辅助作图,邮递发送到计算机网络发布的问题。利用组件式方法,成功开发出系统中的"数据加工模块"和"网络发布模块",并将二者有机结合到一个整体的系统框架内,使之具有较好的扩展性;制定出铁路调度图纸信息到矢量GIS数据之间转换的规范并得以功能上的实现;通过研究调度信息中变化与不变信息的分布规律,在系统中采用"模板化"方法对图元信息进行高效管理。并可采用两种B/S结构,通过用户注册和权限控制实现矢量信息安全快捷的网上发布。     

三阶边值问题解的存在性与唯一性

本文利用上下解方法研究了三阶边值问题解的存在性和唯一性。     

MODEL AND SIMULATION FOR A BRUSHLESS AC GENERATOR WITH AROTARY RECTIFIER

Objective For a brushless AC generator with a rotary rectifier, it is necessary and significant to model and simulate at normal and fault operation states. Methods Two new concepts, namely, Simulink signals and PSB (Power System Blockset) variables, are proposed, and the difference between the two concepts is clarified. Based on the new model for synchronous machines, a simulation model for a brushless AC generator with a rotary rectifier is constructed by Matlab/Simulink/PSB. This new model, which has a speed input terminal and an exciting voltage input one, can simulate the real electrical characters and direct mechanical connection between two synchronous machines perfectly. The rotary rectifier is a three-phase full-wave bridge rectifier which consists of six diodes. The model for the diodes is a macro-model which possesses much better accuracy than an ideal one of switches. Results Based on the present model, some simulation results such as exciting current waveform, phase current waveform and phase voltbge waveform are afftained at several operation conditions. Conclusion The simulation for a brushless AC generator with a rotary rectifier is demonstrated at normal and fault operation states, respectively. The results confirm the presented method.     

CLASSIFICATIONS OF EEG SIGNALS FOR MENTAL TASKS USING ADAPTIVE RBF NETWORK

Objective This paper presents classifications of mental tasks based on EEG signals using an adaptive Radial Basis Function (RBF) network with optimal centers and widths for the Brain-Computer Interface (BCI) schemes. Methods Initial centers and widths of the network are selected by a cluster estimation method based on the distribution of the training set. Using a conjugate gradient descent method, they are optimized during training phase according to a regularized error function considering the influence of their changes to output values. Results The optimizing process improves the performance of RBF network, and its best cognition rate of three task pairs over four subjects achieves 87.0%. Moreover, this network runs fast due to the fewer hidden layer neurons. Conclusion The adaptive RBF network with optimal centers and widths has high recognition rate and runs fast. It may be a promising classifier for on-line BCI scheme.     

Local Search Algorithm with Hybrid Neighborhood and Its Application to Job Shop Scheduling Problem

A new local search method with hybrid neighborhood for Job shop scheduling problem is developed. The proposed hybrid neighborhood is not only efficient in local search, but also can help overcome entrapments while search procedure get trapped at local optima and carry the search to areas of the feasible set with better prospect. New strategies used for breaking out of entrapments are presented and they are helpful for the procedure to improve local optima. A performance comparison of the proposed method with some best-performing algorithms on all 10-job, 10-machine benchmark problems and the other two problems generated by Fisher and Thompson ( ie. , FT6 and FT20) is made. The experiment results show the better optimal performance of the proposed algorithm.     

电动汽车剩余电量计算方法

根据电池在工作过程中任意时刻的剩余电量理论上应该等于电池的实际容量减去放电电量的原理，推导出了剩余电量的实用计算公式，设计了剩余电量计量系统。通过对一组铅酸电池的实车道路测试，发现其计量误差大约为20％，误差主要由电池的实际放电模式与试验模式的不同所造成。     

2013 Suzuki新车Intruder C1500T发布

Intruder C1500T是铃木2013年的伞新车款，主攻长途巡航。车身内置硬款边箱，但两侧阔度只有990mm，好看又好用。