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1.
通过对AutoCAD的二次开发,实现AutoCAD与自动编程应用软件交换数据,最终实现基于AutoCAD图形的NC程序,并用OpenGL图形开发软件,绘制刀具轨迹。  相似文献   

2.
利用 3dsmax软件制作建设效果图 ,在绘制三维图形时 ,应用AutoCAD绘制三维实体 ;光源进行模拟以达到逼真效果 ;玻璃制作 ,前面应用玻璃材质 ,在玻璃后面做一个形同此墙的物体贴上反射图片 ;背景处理 ,在Photoshop中处理效果更加逼真。  相似文献   

3.
设计了系统的基本思路,在Visual Studio 2008数据库的基础上,利用OpenGL对矿山巷道,硐室设计等进行三维可视化虚拟,并通过数学模型,对矿井设计进行分析与纠错处理,用C#实现系统的功能。  相似文献   

4.
周春燕 《内蒙古煤炭经济》2012,(10):14+16-14,16
随着现代化信息技术的迅猛发展,对三维实体图形软件的需求越来越高。CAD图形软件性能对环境艺术设计、平面设计、动漫设计等均具有重大影响。本文首先介绍了图形软件和设计之间的关系,之后对几种图形软件性能进行介绍和对比分析,并总结了其中存在的不足。  相似文献   

5.
针对二维拱坝设计中存在的非常繁杂的参数计算和图形绘制,以及目前GC在水利工程三维设计中研究较少的状况,介绍了GC建模的优点,总结了GC建模的技术路线,以典型双曲拱坝为例介绍了坝体分区建模以及坝上部建筑物建模的关键技术。结合李仙江石门坎拱坝三维建模的应用表明,GC可以完成复杂异形结构体建模,方便进行设计变更,支持设计方案重用,能够极大提高设计人员的工作效率。  相似文献   

6.
介绍建立化工设备三维可视化管理系统的总体构架,分析了设备管理系统的数据流程。利用VB编程语言在AutoCAD平台上开发了虚拟工厂快速建模系统,将构成设备的各个单独的实体建成了图块,从而确定了其ID号的唯一性。通过ID号来识别设备图形,并将其作为数据库中字段,并据此来建立索引,实现了AutoCAD中三维图形与外部数据库的连接,从而实现了设备的可视化管理。  相似文献   

7.
对商标近似判断标准的认识   总被引:1,自引:0,他引:1  
商标近似是指商标文字的字形、读音、含义近似,商标图形的构图、着色、外观近似,或者文字和图形组合的整体排列组合方式和外观近似,立体商标的三维标志的形状  相似文献   

8.
本文通过对三维包装CAD系统泻染功能进行研究,提出将渲染理论应用到包装CAD系统,目的是借助计算机图形有力地帮助我们进行包装产品的设计、包装商品和宣传。  相似文献   

9.
基于鄂尔多斯石岩沟井田的地质信息和矿井设计方案,通过3Dmine矿业工程软件建立井田的地质信息数据库,生成矿井地表及煤层的表面模型,成功将二维设计空间转换为真实的三维矿井系统,直观反应矿井地表、煤层以及井下系统的布置情况,应用过程中研究提出软件在三维建模中所体现的优点,研究成果不仅为全面掌握矿井的全貌提供重要的图形支持,而且为进一步发挥该软件在矿井设计中的作用提供一定的参考及见解。  相似文献   

10.
物料抓取机器人运动机械臂三维图形自由度分析和机器人的运动过程,给出物料抓取机器人的运动学分析数值算例。  相似文献   

11.
Spatial ability has been confirmed to be of particular importance for successful engineering graphics education and to be a component of human intelligence that can be improved through instruction and training. Consequently, the creation and communication by means of graphics demand careful development of spatial skills provided by the balanced curricula based on the research results in multi disciplinary area. The approach to engineering graphics education had been transformed to meet spatial skills improvement even before significant and fast changes arose from the development of computer technology enabling the engineer powerful tools and techniques. The correlation and interference between new technologies widely introduced in engineering graphics education and spatial ability/skills, have initiated new studies to establish the basis of holistic engineering graphics education. This paper presents the overview of some efforts and possible answers resulting from intensive research into spatial ability and skills and their implementation in the conception of graphics education in engineering environment.  相似文献   

12.
依据山东省地理信息中心已有1/10000比例尺的DOM(数字正射影像图,Digital Orthophoto Map)和DEM(数字高程模型,Digital Elevation Model)数据,通过核线共线方程恢复生成大场景三维立体模型,然后进行架空输电线路路径优选、测量平断面图,再进行外业采集交叉跨越和重要断面数据,并用外业实际测量数据对原数据进行拟合修正,最后生成三维漫游。研究将标准测量4D数据应用到架空输电工程勘测设计全过程,通过工程实际应用,提出了应用方法及注意事项等。  相似文献   

13.
This paper proposes a modeling framework to estimate the economic impacts of R&D output of public research institutes. The framework models the process of R&D output generating the economic impacts. The authors collect case data of market‐creation economic impacts originating from R&D output of the National Institute of Advanced Industrial Science and Technology, Japan. On the basis of the case studies, the process of R&D output generating economic impacts is modeled in the following four stages: (1) R&D output, (2) technology transfer, (3) commercialization, and (4) market impacts. The model describes these stages using six parameters. This paper presents the model and case studies, and discusses the application of the model.  相似文献   

14.
This study examines the tasks, processes, and frameworks central to performance assessment in collaborative research organizations. The domain of the study is the partnered learning approach to research and development (R&D) management. The empirical results highlight relationships between context (center scale) and performance (value perceived by industry sponsors) in such R&D collaborations. Insights from this research are broadly applicable to the maintenance of alliances among firms involved in collaborative R&D and are generalizable to that context. Data gathered from a national population of 58 National Science Foundation (NSF) sponsored centers over a 3-year period reveal significant evolutionary patterns in the development of collaborative relationships. Successful industry university consortia leverage four core process relationships: (1) the creation of research capacity yielding advances in process and product knowledge; (2) technology transfer behaviors within the participants' organizations; (3) participant satisfaction with the outcomes; and (4) the continuity of industry sponsor support, i.e., commitment to the collaboration.  相似文献   

15.
印刷油墨在近红外波长区域的响应是不同的,不能用CIELAB、sRGB或HSB这些基于可见光颜色理论建立的色彩系统参数来描述。用来描述人眼接收图像的RGB加色呈色系统与可以覆盖几乎全部可见光谱内印刷品的C0M0Y0色料减色呈色系统相对应。加入对红外波谱有着极佳响应的黑色油墨,配上CMY减色油墨,就可以使每一种色调有着无数种配比方法。CMYK印刷油墨的特性是得到独立图像两种外观表现响应算法的基础,一种是日光下的图像外观,一种是红外光下的图像外观。预设算法基于两个图像,即原始图像X0和在蒙版F基础上生成的印刷图像X。此举的目的是通过对红外图像检测实现文件防伪。在仪器帮助下,700~1000nm波长范围内的图像元素为可见,使只用原色油墨印刷图像进行信息选择成为可能。每个原色油墨的特性用于向为生成红外图像而进行的RGB/CMYK图像分离过程中引入新的标准。这种图像分离称为CMYKIR图像分离,并用其来设计红外响应图像的油墨用量,这种红外响应包括IR效果的产生和消除。CMYKIR印刷的目的在于,引入可见光谱下无法观察到的红外图像。  相似文献   

16.
本文针对计算机绘图中截面交线法这种图形处理方法,在分析计算及消隐理论的基础上提出改进措施,使之不仅具有运算速度快、占用内存少的特点,而且克服了计算机绘图中常见的消隐不彻底的问题,较好地反映了三维立体曲面的图形。并且从不同方位进行动态观察曲面形体的尝试成为可能。  相似文献   

17.
提出了一种图解法的新思路 ,设计平面曲柄滑块 (摇杆 )机构 ,解决了传统图解法设计中量算结合的问题 ,可直接作图求得曲柄和连杆长度 ,作图简便 ,设计思路清晰 ,简化了设计过程 ,而在图解法设计过程中 ,也能加深理解曲柄滑块 (摇杆 )机构的极位特性。  相似文献   

18.
This paper presents and discusses the contribution of 'mentoring' relationships to organisational learning and knowledge creation in the early stages of research and development (R&D) projects. Our study considers the characteristics of a scientific leader, the nature of the context he creates, and how dialogue contributes to scientific breakthrough. Our study is unusual in as much as research on knowledge creation has developed separately, yet in parallel, with that of mentoring. It is rare to combine these disciplines and yet our research shows there is much to learn from examining the two as a process.
We conducted our research at TECHNO, a high-tech-based European company producing advanced equipment dedicated to particles acceleration. Interviews were carried out in 2002–2003 with the founder of the company, the head of the R&D and engineering department, and team members involved in the low energy cyclotron project.
Our exploratory research enabled us to identify differences in actors' perceptions about the nature and characteristics of these relationships. Our study also suggests that not all sets of relationships can tolerate the degree of intensity provided by the 'mentor'. TECHNO has other 'mentors' who do not manage to generate the same creative context. Complementary mentoring styles based on premises and process reflection allow to support and enhance 'upper levels' learning by junior team members. We examine the nature of the leaders as mentors and catalysts within the learning process and briefly discuss implications for setting up and maintaining learning teams.  相似文献   

19.
This paper develops five alternative structural 'models' for formal efforts aimed at spinning off new companies from universities, government laboratories, and other research and development organizations. In various ways the models combine the roles of the technology originator, the entrepreneur, the R&D organization itself, and the venture investor. The paper also presents the policies and structures of technology commercialization operations from investigations at eight R&D organizations in the United States and the United Kingdom. The data indicate that a R&D organization operating in an environment where venture capital and entrepreneurs are readily available (e.g., MIT and Stanford) can appropriately: (1) exercise a low degree of selectivity in choosing technologies for spin-off creation, and (2) provide a low level of support during the spin-off process. The spin-off process is more difficult in environments where venture capital and entrepreneurs are scarce (e.g., ARCH) and mechanisms for high-selectivity and a high level of support must be in place by the R&D organization to compensate for this scarcity.  相似文献   

20.
This study examines the relationships among entrepreneurial orientation, knowledge creation process, and firm performance using survey data from 165 entrepreneurs. We use LISREL analysis to test the direct and indirect effects of the entrepreneurial orientation on firm performance. Knowledge creation process - operationalized to reflect the dimensions of socialization, externalization, combination, and internalization - is used as the mediating variable for explaining the relationship between entrepreneurial orientation and firm performance. The results indicate that the significance of the direct effect of entrepreneurial orientation on firm performance is reduced when the indirect effect of entrepreneurial orientation through knowledge creation process is included in a total effect model. Consequently, entrepreneurial orientation is positively related to firm performance, and knowledge creation process plays a mediating role in this relationship.  相似文献   

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