工件坐标系编程的译码程序设计

数控系统对零件加工程序段中的坐标值译码最为复杂,采用C语言开发了数控系统中的译码程序,实现了工件坐标系下的编程译码,为今后实现更多编程方法提供了方便。     

关于P5P问题的研究

PnP问题是计算机视觉、摄影测量学乃至数学领域的一个经典问题.系统地研究了P5P问题,用代数方法证明了下述结论:当5个控制点中任意3点不共线时,P5P问题最多有两个解,并且解的上限可以达到.同时给出了有惟一解和有两个解的代数条件以及求解P5P问题的具体算法.在物体定位、机器人导航等领域具有比较重要的应用价值.     

“=”在C语言中的性质分析

各种高级程序设计语言的运算符均有“=”这一基本的运算符,但C语言的“=”运算符在功能特点上和其它语言有很大的区别。本文详细介绍了C语言赋值运算“=”的性质,并对常见的问题进行了归纳分析。     

Quadtree-based eigendecomposition for pose estimation in the presence of occlusion and background clutter

Eigendecomposition-based techniques are popular for a number of computer vision problems, e.g., object and pose estimation, because they are purely appearance based and they require few on-line computations. Unfortunately, they also typically require an unobstructed view of the object whose pose is being detected. The presence of occlusion and background clutter precludes the use of the normalizations that are typically applied and significantly alters the appearance of the object under detection. This work presents an algorithm that is based on applying eigendecomposition to a quadtree representation of the image dataset used to describe the appearance of an object. This allows decisions concerning the pose of an object to be based on only those portions of the image in which the algorithm has determined that the object is not occluded. The accuracy and computational efficiency of the proposed approach is evaluated on 16 different objects with up to 50% of the object being occluded and on images of ships in a dockyard.

Making the ‘MOST’ out of RFID technology: a research agenda for the study of the adoption,usage and impact of RFID

Radio frequency identification (RFID) technology dramatically increases the ability of the organization to acquire a vast array of data about the location and properties of any entity that can be physically tagged and wirelessly scanned within certain technical limitations. RFID can be applied to a variety of tasks, structures, work systems and contexts along the value chain, including business-to-business logistics, internal operations, business-to-consumer marketing, and after-sales service applications. As industry adoption of RFID increases there is an emerging interest by academic researchers to engage in scholarly investigation to understand how RFID relates to mobility, organizational and systems technologies (MOST). In this paper, we explore RFID and propose a research agenda to address a series of broad research questions related to how RFID technology: (1) is developed, adopted, and implemented by organizations; (2) is used, supported, and evolved within organizations and alliances; and (3) impacts individuals, business processes, organizations, and markets. As with many technological innovations, as the technical problems associated with implementing and using RFID are addressed and resolved, the managerial and organizational issues will emerge as critical areas for IS research.

无线传感器网络中瓶颈节点的研究

无线传感器网络中的"瓶颈节点"是指那些由于随机部署的原因而不得不成为连接两个或多个区域的孤立的节点.相对于其他节点,这类节点对网络的生存期有着更大的影响.如何找出这些"瓶颈节点"在图论中是一个找到最小割集的问题.基于实际部署的可行性,提出了一个新的"准瓶颈节点"的概念,它对网络具有与"瓶颈节点"类似的影响,但是可以很容易地通过分布式算法找出来.通过分析和仿真,证明了"准瓶颈节点"对网络行为(包括能量消耗速率、丢包率)的巨大影响.最后,提出了一种分布式算法来发现这些节点,并提出了两种有效的解决思路来减小它们的不利影响.     

煤气混合流量配比及热值串级模糊控制系统

文中将模糊控制技术运用到煤气混合串级调节系统中,介绍了系统的构成、原理及控制算法,有效地实现了混合煤气热值的检测和控制。     

用电营销管理信息系统的建设

分析供电部门用电营销管理信息系统的发展和建设,阐述该系统建设应当注意的问题。指出系统建设关键是要提高各级领导和管理人员的现代意识、信息意识,同时提高对用电营销管理信息系统建设重要性的认识。     

车用汽油辛烷值浅论

本文简要地介绍了汽油辛烷值的基本概念以及辛烷值测量的意义。