After expounding vr concept and its characters , the necessity and rationality of vr existence and its application in cad / cam , several other aspects are studied : first , the three kinds of stereoscopic display theory are set forth and the research is focused on the theory which is based on parallax and discussed from the aspects such as the physical basis of the third dimension production , the influencing factors of third dimension , the theory and arithmetic of drawing stereoscopic figures etc ; second , the difference among vr , other interaction methods and vr ' s status are studied from the perspective of human computer interaction development , the cognitive psychology model of vr interaction is analyzed and a classification study on vr is done according to different operation missions and metaphors ; third , the concept of virtual design is given out based on the research on its other concepts , then the difference among vr , cad and the realization of virtual design are studied 在阐述虚拟现实的基本概念与特性、存在的必要性与合理性,以及在cad / cam方面的应用的基础上,本文深入研究了: 1 .虚拟现实的三种立体显示原理,着重于基于视差方式的立体显示,从以下几个方面进行了多角度的探讨:产生立体感的生理基础,立体感影响因素,立体图绘制原理与算法等。 2 .虚拟现实的交互原理,从人机交互的发展角度研究了虚拟现实与其它交互方式的异同以及它所处的地位,分析了虚拟现实交互的认知心理学模型,并按作用于对象的任务不同和交互隐喻方式的不同对虚拟现实的交互方式进行了分类研究。 3 .虚拟设计,在研究虚拟设计的各种定义方式的基础上定义了本文中虚拟设计的概念,研究了它相对于传统cad的不同之处,以及虚拟设计的实现规划。
Medical scientists have studied the structure of human brains and the aesthetic reactions and offered physiological basis for people ' s artistic appreciation : namely , the essence of people ' s aesthetic experience is a physiologically instinct reaction , and different brain structures determines different aesthetic perception 医学科学家对人的大脑结构与审美反应的深入探究为人们现实生活中的艺术现象提供了生理基础，即人的审美经验的本质是生理性的本能反映，不同的大脑结构决定了不同的审美感受能力。
We analyze their answers and get that mental qualities for college students have 5 dimensions , such as self - control ability , reaction ability , adaption ability , self - adaption ability , and intelligence . and it includs 8 factors , such as resist frustration , self - confidence , psychokinesis , environment adaption , etc . we select several questions for each factors , add 5 test questions and 1 guide question , a 54 - questions " questionnaire produced 本研究得出以下结论：大学生心理素质的概念为：心理素质是建立在生理基础上，在个体成长过程中，在外界环境、教育的影响下逐渐形成的，表现在个体的一切活动中，影响个体的活动方式、水平的一种具有个体特征的能力。
This article include three part , in the first part , we clarify the principle of the stereopsis developing , including the physiological element of stereopsis , its developing process and classification . and point out that binocular parallax is the necessary element of stereopsis . review the equipment or method that have been or deing used in the stereopsis test , and the suitable people to use them , analyze all kind of problem or disadvantage of them 在第一部分中阐述了立体视觉的形成机制，包括产生立体视觉需具备的生理基础、立体视觉的形成过程以及立体视的分类，并指出双眼视差是产生立体视的必要条件；简单回顾了在立体视的心理物理检查中曾被使用或正在使用的仪器和方法，各种仪器的适用人群，分析其中存在的各种问题。
Students are required first to take fundamental courses on human physiology , genetics , microbiology , cellular basis of biochemistry , and fundamentals of biochemistry , etc . , to prepare for the study of food and nutritional sciences . they can then choose from a range of more specialized courses directly related to food and nutritional sciences , and conduct directed research on a relevant topic under the supervision of a lecturing staff 课程设计方面，学生须先修读人体生理基础、遗传学、微生物学、生物化学细胞基础、基础生物化学等课程，以增强修读食品科学及营养学的能力及兴趣；其后，学生选读与食品科学及营养学有关之专门科目，及可在老师指导下进行有关之专题研究项目，以进一步加强对食品科学及营养学的专业知识。
So their creative personality has possibility developed on a large scale and perfecting very much and the potentiality of creativity that can be excavated is enormous . for promote creation performance fine transformation of student , we can considers from nutrition , pedagogy , sociology , educational angle of sociology and in physiological foundation , home education , school education and social culture . several respect structure and train student ' s comparatively perfect creative tactics of personality : ( 1 ) balanced sufficient nutrition whether brute force support student creative full play and impel relevant personal trait form and physiological foundation 为了促进学生的创造性能更好的转化，我们从营养学、教育学、社会学、教育社会学的角度，在生理基础、家庭教育、学校教育及社会文化等几方面构建培养学生较为完善的创造性人格的策略： （ 1 ）均衡充足的营养是强力支撑学生创造性发挥以及促使相关的人格特质顺利形成和发展的生理基础，为此，学校、教师、家长必须树立正确全面的营养意识，积极响应国家的“营养行动计划” ，尽力为学生提供良好的膳食营养。
