The topic we have tackled are as the following , ( 1 ) numerical simulation for light propagation and visualization of light - field distribution of fresnal diffraction and fraunhofer diffraction with ( 2 ) computation and display of hologram by method of simulation - anneal ( 3 ) hologram computation of a point source based on method of interference hologram computation 论文中具体完成了以下工作: 1 、对光的传播特性进行了数值模拟,以可视化方式表现了菲涅耳衍射和夫琅禾费衍射的光场分布。 2 、用模拟退火算法实现了全息图的计算及显示。 3 、在基于干涉全息图的计算方法上,计算了一个点光源的干涉全息图和相位分布。
Abstract : according to the realities of existing engineering structures , the logostic normal distribution is used to described the common variables in the analysis of structural reliability . the checking point method of simulation logistic normal distribution is proposed . the appliation of the logistic normal distribution is demonstrated by the reliability analysis of durability for corrosion of steel reinforcement 文摘:根据在役工程结构的实际情况,采用对数正态分布来描述可靠度分析中常遇到的随机变量;讨论了拟对正态分布的验算点法;通过对钢筋混凝土钢筋锈蚀的耐久性可靠度分析,说明了拟对数正态分布法的应用。
Finally , the method of simulation of disperse systems is analyzed , the object - oriented event activity scanning is given , the timed - a research method is given based on the traditional control algorithms , this method have the advantage of both a research and the time research . the process of the simulated software is introduced . the simulated result is analyzed 最后分析了离散事件系统的仿真设计方法,提出了面向事件活动扫描仿真模型,分析了传统的仿真调度算法,在传统仿真调度算法的基础上提出一种新的时间- a仿真算法,这种算法结合了a搜索算法与时间最短算法的优点。
Relative research is done in three ways : development pattern of simulation system , design method of simulation software and software quality managing method based on considering characteristic of simulation software system . thirdly , a set of simulation algorithm classes are designed and implemented using object - oriented programming ( oop ) technology 结合仿真软件系统的特点,在仿真系统开发模式、仿真软件设计方法、软件的质量管理方法三方面进行了研究,在面向对象模型的基础上,发展了一套完整的仿真系统开发模式,提出了仿真系统的对象建模方法、仿真系统的软件编码原则和质量管理方法。
Other methods aiming at culture learning - to learn the salient feature of the host culture and proper behaviors - include such intercultural training techniques as information - giving , the method of simulations , the critical incident technique , the method of culture assimilators and experiential learning by doing 文化休克也可以通过适当的跨文化培训得以减轻,比如向人们提供不同文化的信息来增强人们对其它文化的认识,或者让人们参与典型实例分析来提高人们的文化敏感性等。
However , the movement and transformation of n in soil under fertigation remains unclear . the methods of simulation experiment and culture experiment were used to study the movement and transformation of n in soil under fertigation by drip irrigation . the main experimental results were shown as folio wings : ( 1 ) the water infiltration under drop irrigation is a point infiltration ; and the soil moisture in vertical and horizontal directions was increased with the irrigation time , and the movement rate were decreased with the irrigation time 本研究采用室内模拟试验和生物培养试验相结合的方法,研究了在滴灌施肥条件下,化学氮肥施入土壤后的迁移、转化规律以及对作物生长的效应,获得了以下主要结论: ( 1 )滴灌条件下水分以点源入渗土壤,水平和垂向的湿润锋均随入渗时间的增加而逐渐变大,在入渗开始阶段湿润锋的推进速率较大,随入渗时间的延长,湿润锋的推进速率逐渐变慢。
Based on the simulation of the power systems and the aircraft epgs at home and aboard , the research on simulation of aircraft electrical power generating system ( epgs ) is performed by using matlab in this paper , and the analysis of system modeling and a new method of simulation is described , simulating the synchronous generators is the key to the aircraft epgs simulation 本文在总结国内外电力系统和飞机电源系统数字仿真研究的基础上,开展了利用matlab对飞机电源系统数字仿真技术的研究,对系统的建模和仿真方法进行了分析。
In the first section , the typical signal environments of electronic warfare are discussed , and the traditional methods of simulation on signal environments are introduced . then , a kind of new model of signal environments simulation is illuminated in this paper , and the simulation results based on this model are expressed 首先,对现代雷达电子战的典型信号环境作了分析,对已有的一些信号环境仿真方法作了介绍,并针对当前的复杂信号环境提出了一种改进的信号环境仿真模型? ?参数法信号环境仿真模型。
Thus , the general laws of changing stress and strain or settlement at these two different states ( unloading increasingly and reloading increasingly ) were obtained and offered objectively . so , the field of stress and displacement obtained through this method of simulation was real and objective for the analysis and design of culvert structure . the simulation of the whole procedure of construction was very vital in construction practice 整个施工过程的有限元模拟分析,真实反映场内各点的应力、应变(内力和位移) ,为涵洞的结构分析计算提供了客观、合理的结果,具有重要的实际意义,为涵洞这类构(建)筑物的施工提供参考、为设计提供科学依据。