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Based on summarizations of system simulation technology and visual simulation technology, this thesis makes a deep research on system design technology and visual environment design technology with the back ground of two avion simulation systems.

因此，军机仿真系统在系统功能、总体设计以及关键技术方面亦发生了较大的变化，以满足飞行作战仿真训练的需要。

Based on summarizations of system simulation technology and visual simulation technology, this thesis makes a deep research on system design technology and visual environment design technology with the back ground of two avion simulation systems. This thesis mainly studies the followings

本论文在全面综述系统仿真技术、军机仿真技术和视景仿真技术理论的基础上，以两种型号的现代军机仿真系统为背景，对系统顶层设计技术和视景环境设计技术进行了深入的研究，主要研究内容如下

For this sign of Fuyun Compound Stone Co., Ltd, the letter "F" generates visual effect by form of masonry after being cut, the straight lines combined with bights give a special visual feeling, the color changes from purple to yellow gradually symbolizing masonry culture of corporation.

富云岗石公司标志设计其视觉载体为&石材切割后的造型&变化为公司英文名称中的首写字母&F&，标志主体的直线理性设计与下面的曲线标准字体形成有趣的视觉感受，标志采用富贵烂漫的紫色到黄色过渡，象征了公司的石材文化。。。。。。

Firstly,two chaotic maps are suggested and their statistic characteristics are also analyzed.Secondly,to accomplish a controllable visual effect of encrypted image,a visual quality control model is presented,and on the basis of which,a chaotic image encryption scheme is constructed by chaotically adjusting the randomly selected approximate coefficients at the coarsest level in wavelet domain.Then,the security and efficiency of the algorithm are analyzed.

首先给出了两个混沌映射，并分析了其统计特性；为实现基于质量可控的图像加密，构建了加密的视觉质量控制模型；在此基础上，通过对随机选取的最粗级小波近似系数进行深度可控的混沌调节，实现了图像加密；最后，对加密算法进行了有效性分析。

GA often uses C or Visual C++ to compile codes, so the program is not only long and cockamamie but also the efficiency is low and the velocity is slow. This paper uses software Matlab powerful calculating ability and many functions to compile programs, then encapsulate and link those programs to run without Matlab environment. At last use Visual C++ friendly alternate function to compile in-out interface.

针对遗传算法常用C或Visual C++编写源代码，程序庸长繁琐，效率不高，运行缓慢的特点，本文采用Matlab强大的数值计算能力和众多的库函数编写算法；然后封装和链接程序，使Matlab编写的算法能够完全脱离Matlab的编程环境；利用Visual C++良好的人机交互功能，用Visual C++编写算法的输入输出接口界面。

In allusion to the above-mentioned problems, considering the self-adaptive regulative ability of the visual system to natural perceptive information and the feedback between visual cortexes, a bidirectional NNSC model is proposed, which is based on the robust principal component analysis and the priors of receptive fields of simple cells in V1. And using the (Polak-Ribiere-Polyak) PRP conjugate gradient descent algorithm, the minimum optimization problem of the objective function can be realized.

针对上述问题，考虑视觉系统对外界感知信息的自适应调整机制和视皮层之间的反馈连接，本文提出了一种基于稳健 PCA 和 V1区简单细胞感受野先验知识的反馈非负稀疏编码模型，并且使用 Polak-Ribiere-Polyak共轭梯度下降优化算法实现了目标函数的最小化问题。

In this model, when analyzing complex visual field or pattern, visual attention mechanism is used to detect saliency features in the image and drive the fixation point to scan the saliency features sequentially.

其基本想法是：在进行复杂的场景分析或目标识别时，首先通过注视控制机制，获得视景中的关键特征区域，并将注视点按照一定的顺序对这些关键特征区域进行串行扫描。

When analyze complex visual field or pattern,visual attention mechanism is used to detect saliency features in the image and drive the fixation point to scan the saliency features sequentially.

其基本想法是：在进行复杂的场景分析或目标识别时，首先通过注视控制机制，获得视景中的关键特征区域，并将注视点按照一定的顺序对这些关键特征区域进行串行扫描。

English Syllable, Latticed Square, and Gestalt Closure, were tachistoscopically exposed in the LVF and the RVF of 71 college students, through visual half-field presentation, with visual angle of 2to 6 from fixation point, and with exposure time of 40 msec.

在第一部分有关脑侧化功能的实验裹，研究者利用视野控制法呈现「中文词」、「英文字」、「黑方块」、和「完形图」於受试者的「右视野－左脑」及「左视野－右脑」，以考验「左脑处理分析性、系列性语文讯息，而右脑处理整体性、同时性图形空间讯息」的说法是否为真。

Simulation is a simulation model of fruit decorations,The recent development of a visual display of expressions, Instead of using real fruit need to display fruit in a number of visual effects access to the display of occasions, Simulation of fruit placed a long time to overcome the fruit will rot, eradicating corruption, Fachou animals Diao and easy to follow, eat and so on, Fruit is the alternative to display the best choice.

仿真水果模型是一种仿真装饰品，是最近发展起来的一种视觉展示表现形式，代替真水果用在一些需要摆设水果获得视觉效果的展示场合，仿真水果克服了水果长时间放置会腐烂、变质、发臭以及容易被动物叼走、吃掉等问题，是替代水果用来摆设的最佳选择。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。