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Based on the ETA/VPG and LS-DYNA software platform and "vehicle-barrier-curve-road" integrated system dynamics model, in the research, the orthogonal experimental design method and the dynamic explicit finite element method were applied jointedly. The rear wheel elevation was considered as criterion for evaluation and six cross-sectional shape design variables were created. The application of L25 (5^6) orthogonal table for simulation and the use of SPSS statistical package help the variance analysis of simulation results, and the influence levels of various factors were studied to determine the optimal parameters of concrete barrier.

为此，以NJ型混凝土护栏尺寸参数为参考基础，以防撞等级为SS级的护栏为研究目标，以大型客车总质量为18t、碰撞速度为80km/h、碰撞角度为20°的碰撞条件为研究工况，基于eta/VPG及Ls-dyna软件平台及&汽车－护栏－弯道&一体化车－路系统动力学模型，联合应用正交试验设计方法及动态显式有限元方法，以客车后轮抬高量为考核指标，对控制弯道混凝土护栏截面形状的6个设计变量，应用L25(5^6)正交试验表安排仿真试验，借助SPSS统计软件包，对仿真试验结果进行了方差分析，找出了各因素对结果的影响程度，并据此确定了弯道混凝土护栏的最佳尺寸参数。

This paper studys the terrain following for low penetration aircraft ,and establishes the model of ALCM's clobber probability based on the Butterworth terrain model . It simulates much of the computation of its clobber probability under typical cruise conditions and analyzes those simulation results deeply. The control system is designed based on the lobber probability simulation result,and the reasonable control data are given.According to those research,the digital terrain following simulations are given .

文中研究飞行器低空突防的地形跟随问题，基于布特沃斯地形模型，建立了飞行器撞地概率仿真模型，在各典型巡航条件下进行了大量的撞地概率仿真计算，并对仿真结果进行了深入地统计分析和研究，在此基础上，设计了相应的控制系统并确定了合理的控制参数，对飞行器地形跟随进行了飞行仿真。

This thesis presents to a novel and general parallel simulation approach to increasing network simulation speeds on modern multicore systems.

在这篇论文中，我们提出了新颖的平行模拟方法为了加速网路模拟器在多核心架构上的模拟速度。

The main content of the disquisition is studying the Simulation of fractionation process and application in the whole process of the nitrotoluene producting, using the technology of process simulation.

本课题研究的主要内容是运用流程模拟技术进行硝基甲苯生产中硝基甲苯分馏过程的全流程模拟及应用。

But simulation results demonstrate that the accuracy degree of our approximate analysis is acceptable. Both analsis and simulation in this chapter show that the destination correlation between successive packets have strong adverse effect on the performance of nonblocking packet switches.

仿真结果显示这种近似分析的准确程度是可以接受的本章的分析和仿真都表明相邻到达信元的目标地址的相关性对无阻塞交换机的性能产生较大的负面影响。

Numerical simulation for nonuniformly injected SOAs is an important basis for the device characterization, fabrication, and applications. We can conveniently and fleetly obtain the device characters and the effects of each design parameter through numerical simulation.

对非均匀注入SOA的数值仿真是研究其器件特性、器件制作、拓展其应用的重要基础，通过数值仿真我们可以方便快捷地获得器件的特性及各参数对其特性的影响，运用分析的结果来指导器件设计。

By using this method, the memory space is reduced observably while guaranteeing the numerical simulation accuracy through numerical simulation.

仿真结果表明，该方法在保证数值模拟精度的条件下，大幅削减了空间需求。

Based on the national tenth five magnitude project — Suzhou City Water Environment Improvement and Synthesize Demonstration item, we carried out the static simulation test and the dynamic simulation test under the condition of heavy pollution loading rate and low transparency and dissolved oxygen in polluted river of suzhou ancient city district. These investigations were on the base of the formers' work. We analyzed the purification effects and rules of plant floating-bed technology on polluted river water, and also applied the technology to purify the polluted river water in Miaojia River. Conclusions were summed up in the following:The dominance plant option test was carried out among Oenanthe javanica, Lolium mutliflorum and Allium sativum under low temperature condition. The results showed that the Oenanthe javanica was the dominance floating-bed plant under low temperature condition. Its net removal rate of TN、 NH_3-N、 TP、 COD_ were 51.3%、 65.2%、 55.6%、 57.6%, respectively, and inhibition rate of algae reached 92.3%.

本论文以国家863重大科技专项——&苏州市城市水环境质量改善与综合示范&项目为依托，在前人研究的基础上，根据苏州古城区污染河道污染负荷重、透明度及溶解氧低的实际情况，通过静态、动态模拟试验，研究了植物浮床技术对污染河水的净化效果及规律，同时在苏州古城区内的苗家河开展了植物浮床技术净化污染河水的示范应用，得出了以下结论：(1)低温条件下对水芹菜、多花黑麦草、大蒜三种浮床植物筛选的试验表明：水芹菜是低温条件下浮床植物的优势种，其对TN、NH_3-N、TP、COD_的净去除率分别为51.3%、65.2%、55.6%、57.6%，对藻类的抑制率达92.3%。

At the end of this papery simulation is performed on the new algorithm, and the simulation results along with the ex-ample checking computation prove the effectiveness of the new algorithm.

实验结果表明，该算法能够有效的处理遮挡、光照变化和尺度缩放等复杂情况，对目标进行准确有效的跟踪，改善了传统方法在尺度缩放等方面的局限性。

The veracity of the simulation results is validated by experiments and the effect of the size of capillary hole on vacuum degree is analyzed. The parametrical modeling, simulation, and optimization design of vacuum package process of MEMS devices are realized.

通过实验初步验证了模拟结果的准确性，分析了毛细孔尺寸对腔体和烘箱真空度的影响，实现了MEMS器件真空封装工艺的参数化建模与模拟和仿真优化设计。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。