《白虎通义》声训的价值与不足

《白虎通义》的声训在训诂学史上有一定的地位和影响。其声训有助于音韵学研究，有助于推求语源，有助于系联同源词，有助于破假借；但也存在很多不足。文章对《白虎通义》声训的学术价值和不足之处作了简要的分析。     

谈客滚船发生事故时的应急措施

客滚船发生事故时,采取合理的措施以减少人员伤亡和财产损失非常重要。文中针对客滚船的结构特征和常见事故的特点,分析事故原因,提出合理处置措施,以期更好地应对事故的发生。     

钩打系统远程管理软件的研究与开发

钩计划传输打印控制系统是编组站综合自动化系统的一个重要组成部分，其主要功能是实现钩计划及相关信息在异型网络上的传输。着重分析的是钩计划传输打印控制系统远程管理软件。此软件按其实现功能主要包含系统IP地址设置和探测、逻辑端口和物理端口的映射管理、各端口独立的打印机配置、初始化参数4大模块。在此对4大功能模块进行详细的分析和说明。     

金融危机下客车行业形势及应对策略分析

通过分析金融危机下我国客车行业的形势，阐述我国客车企业应采取的对策。     

Research and application of non-clay low damage temporary bridging drilling/ completion fluids system

Following the basic theory of protecting gas-reservoirs from damage with the temporary bridging technology, inert calcium carbonate (CaCO3) particles, whose diameter is consistent with the size of pores or apertures in the reservoir, were selected as the bridging agent, and modified resolvable starch was selected as filtration loss reducing particles to form the non-clay low damage temporary bridging drilling/completion fluids system (NLTDFS). Under the simulated condition of the well bottom during real drilling, NLTDFS was used to conduct dynamic and static damage experiments of cores for 48 hours, respectively, and then the experimented cores were permeated with pure nitrogen from the undamaged end to the damaged one to measure their recovery of permeability. The results showed that the permeability recovery rate of the core reached 90% or so, and the damaged depth was less than 1 cm, which demonstrates that NL TDFS has higher temporary bridging effectiveness and lower damage to the gas-reservoir than other drilling fluids system. NLTDFS has been used to drill many horizontal wells, and four of them have obtained high yield of natural gas. The yield of natural gas of LPl well reached 85 X 104 m3/day after completion with the rump pipe. The formation of the stable well wall and smooth drilling led to an API loss less than 4 mL and an HTHP loss less than 15 mL.     

基于工业以太网和PROFIBUS总线的分布式综合控制系统的设计

多台套相关船舶设备复杂作业的综合控制技术是实现船舶自动化的一个重要手段.文中介绍了一种以工业以太网和PROFIBUS总线为通讯平台,以SIEMENS公司S7-300PLC为控制单元的舰船设备综合控制自动化系统.通过对自动化控制领域现状的分析,介绍了基于工业以太网和PROFIBUS总线通讯协议的自动化系统的底层硬件,包括数字量输入输出节点、控制模块、通讯功能等组件的组成方式和系统配置方案;通过规划通讯协议以及采用STEP7编程工具和WinCC组态软件进行标准化编程,实现了系统功能,有效地协调控制了系统内各台套设备的关联工作.该系统采用了工程控制领域中的先进技术,并已在试验室通过各种试验,完善了功能,验证了可靠性.     

Co-simulation and experimental study for wingspan of flapping wing micro aerial vehicle

The 3D model of flapping wing mechanism and veins is constructed in 3D computer aided design (CAD) software UG. Then the co-simulation model is established by using multibody dynamics software ADAMS and MATLAB. The validation of this co-simulation model is verified by comparing the simulation results with final experiments. The simulation results and experiments reveal that the relation between flapping frequency and driving voltage of motor is approximately linear under various wingspans. The variance of flapping frequency among different wingspans augments gradually with increasing voltage. Furthermore, the simulation results sug-gest that flapping frequency is sensitive to wingspan and decreases with increasing wingspan of veins, and the relation between flapping frequency and moment of inertia of veins is also approximately linear for various volt-ages.     

240／275系列机车柴油机传动机构中间齿轮装配破损故障的技术对策

根据沈阳铁路局近年240／275系列机车柴油机传动机构中间齿轮装配破损的数据统计，分析了故障发生的原因，提出了解决问题的技术措施。     

骨膦治疗骨转移癌25例疗效分析

对１９９３～１９９６年住院治疗的２５例骨转移癌患者采用单用骨膦治疗的方法，观察其对骨转移癌患者的止痛效果、骨病灶变化和不良反应。结果∶疼痛完全缓解５例（２０％），部分缓解１１例（４４％），无效９例（３６％），总有效率为６４％；骨病灶控制率为１２％（３／２５）；不良反应仅有轻微恶心。提示∶骨膦是治疗骨转移癌较理想的药物。     

有源滤波器改进控制方法的仿真研究

有源滤波器通常采用常规的三角载波调制PWM控制方法，具有开关频率固定、输出波形谐波分量较少的优点，但响应速度比较慢、精度低。通过增加输入电压补偿来改进三角载波调制的PWM控制方法，可以提高有源滤波器的补偿精度和实时性，减少开关损耗。MATLAB/Simulink仿真验证了改进方案的可行性。