Would Professor Moriarity Make a Credible Sherlock Holmes?

My three year old daughter, Hannah, has spent a considerable amount of thinking time speculating on the why and wherefore of fairies. It has transpired that not all fairies are good. Miss Flora, Miss Fauna and Miss Merryweather are definitely good. Tinker Bell, though, is another brand of fairy. Didn’t she almost kill Wendy in Peter Pan? But she did have some redeeming features. In tandem with Hannah’s ruminations on the fairy world, I have been thinking about hackers of the black, grey and white hat varieties. Are black hats all bad? Are white hats all good? Are grey hats a devastating combination of both?     

Building Bridges,Standing Guard

A major challenge facing the ‘white hats’ — those whose job it is to create ands sustain a stable and secure E-commerce environment — is to forge a global strategy to combat global cybercrime. Becasue the nature and extent of crimes directed against E-commerce sites are increasing daily, this task becomes more urgent and more critical.     

eNVyMyCar: A Multiplayer Car Racing Game for Teaching Computer Graphics

The development of a computer game is widely used as a way of conveying concepts regarding Computer Science. There are several reasons for this: it stimulates creativity, it provides an immediate sense of achievement (when the code works), it typically covers all the aspects of an introductory course, and it is easy to find ideas just by looking around and finding stimulation from one's environment and from fellow students. In this paper we present eNVyMyCar, a framework for the collaborative/competitive development of a computer game, and report the experience of its use in two Computer Graphics courses held in 2007. We developed a multiplayer car racing game where the student's task is just to implement the rendering of the scene, while all the other aspects, communication and synchronization are implemented in the framework and are transparent to the developer. The innovative feature of our framework is that all on‐line users can see the views produced by their fellow students. This motivates students to improve their work by comparing it with other students and picking up ideas from them. It also gives students an opportunity to show off to their classmates.     

计算机技术在机械制造与管理中的应用

在我国,计算机技术在机械制造企业的应用刚刚开始起步,虽然取得了一定的效果,但在应用规模、范围上与发达国家相比还存在较大的距离。为了加快我国机械企业信息化的步伐,本文具体探讨了计算机技术在我国机械制造与管理中应用特点与现状,列举了一些实例,探讨了计算机技术在机械制造与管理中的应用发展。     

To install an Access Control System,activities and checklists

As the computer terminals continue to march into more and more offices and as more and more of our work becomes impossible to perform without the support of computers, the need to safeguard the computer systems becomes very obvious. And since the information systems have become more complex than the computer systems that handle them, the need to guard the information against unauthorized usage, alteration and deletion has grown to be even more important than to safeguard the computers themselves.To secure a modern information system with all its physical and logical components is not an easy task. And without the support of a high quality Access Control System, the required security level could not just be reached.There are quite a few activities that will have to be performed before you have reached the point where you have an established and functioning Access Control System.     

Computer Processing of Biomedical Images

The 1970's have witnessed two dramatic innovations in the application of computers to image processing in medicine: computerized tomography (CT), a system where data gathered from an x-ray scanner are fed into a computer to produce cross-sectional images of the human body, and white blood cell differentiation (WBCD), a system that uses a television camera and a computer to replace the human eye and brain in the sophisticated task of visually observing and classifying human white blood cells through the microscope.     

一种改进的基于区间树的等值线提取算法

从DEM中提取等值线是计算机制图和地理信息系统的基本功能之一。本文提出一种基于区间树索引的等值线提取算法。借鉴在平衡二又排序树中插入元素的算法来建立区间讨结点;在查找等值线经过的网格时,仅对搜索路径上区间树结点的网格队列排序,避免对区间树全部结点的网格队列排序。实验表明,此算法较以往算法在时间上具有优势。     

用易语言编写数字黑洞猜想检验程序

数字黑洞是数学中的一种奇妙现象,采用计算机编程的方法可有效解决诸多此类猜想的检验问题,而且这种检验是在计算机所容许的最大数值范围内作出的,这无疑使得该类猜想离百分之百真命题的距离仅差一步之遥,其探究意义尤为深远.所给出的被动式与主动式两个易语言程序,都是在易语言软件环境中运行通过的,将其拷贝下来便可直接使用.     

Iconic Interfacing

Icons are not just religious images from Czarist Russia? they are also pictures used by computer graphics designers to help improve the man-machine interface.     

基于循环减法加速的多像素Bresenham直线绘制算法

直线生成算法是图形的基本元素,也是计算机图形学基础理论的重要内容.Bresenham算法是直线生成算法中最经典的算法,但是它一次计算只能生成一个像素点,效率低下.为了提高直线生成效率,充分利用待生成线段的起点和终点坐标及线段自身的对称性,对Bresenham 算法进行改进,一次计算生成一个像素行.讨论硬件实现该算法的加...     

浅析软件界面设计中的色彩运用

随着计算机行业的发展,软件产品层出不穷,人们不再仅仅满足于对于软件的功能要求上,对于软件的使用方便度及舒适度上提出了更高的要求,本文就软件界面设计中的色彩运用这一问题做简要分析,以期以点带面,引起行内人士对此问题的关注。     

远程机架租用服务的机房搭建方案

针对网络技术学习音难以购置昂贵的网络设备的问题,提出了一个提供远程机架租用服务的机房搭建方案-该机房可以为网络技术学习者提供方便实惠的机架租用服务,同时还可以提供文件资源．通过终端访问服务器对所有的实验机架进行管理,只需Telnet终端访问服务器就可以反向Telnet到所有的网络设备,以及FTP服务器为用户提供文件传输服务在用户需要实验资料时直接访问服务器获取,并部署VPN服务为用户提供安全方便的远程接入和使用ACS服务器和防火墙部署安全策略．提供了一个安全稳定,性能良好,功能适用的机房网络,从而向网络技术学习者提供更好的机架租用服务,     

浅析软件界面设计中的色彩运用

随着计算机行业的发展,软件产品层出不穷,人们不再仅仅满足于对于软件的功能要求上,对于软件的使用方便度及舒适度上提出了更高的要求,本文就软件界面设计中的色彩运用这一问题做简要分析,以期以点带面,引起行内人士对此问题的关注。     

A Survey of Computer Animation

A survey on computer animation is presented with three specific goals:

• •

  To clarify what people understand by computer animation.
• •

  To separate the different aspects of computer animation and underline its main problems.
• •

  To present the different solutions given to these problems.

Several classifications for computer animation systems are first made attending to different criteria. The report is subsequently divided into two basic sections according to the historical classification of computer animation systems: computer-assisted animation, where traditional animation is just helped by the use of computers, and modelled animation where the use of computers is essential in different aspects of the animation process. Special emphasis is placed on motion specification and generation.
Finally, special attention is paid to human body animation because of the great interest of this specific field of computer animation and the peculiarity of its problems.
Aspects of hardware aspects and postprocessing has just been taken into account in the classification section but have not been studied.     

搜索:苹果公司和它的产品

<正>我相信,我们都知道全世界最著名的那只苹果,那就是,专属于优秀的苹果电脑公司的那一只。它的标志是一只被咬过的苹果,那表明苹果公司勇于做科学的领军人,并开发未知领域。苹果是智慧的象征,当初亚当和夏娃就是在吃了苹果后才变得有思想的,     

Revisiting the need for formal education in visualization.

Defining visualization education is still a work in progress. Visualization education is not just a subject within computer science. Computer scientists are not always the appropriate choice to teach visualization courses on their own. Visualization is not just mastering a set of concepts but acquiring skills. Student should learn by doing, either using one tool or a variety of tools, depending on the course's focus.     

可穿戴计算机及其应用

一种新奇的可穿戴计算机诞生并开始成长了 ,它使得人们从传统的电脑框框中跳了出来 ,从人围着计算机转改变为计算机围着人转 ,计算机真正成为了人们工作和生活的助手。未来的日子里 ,它可能与你如影随形。     

Computers and Art

The use of computers in art is not new: examples are given of past and present applications. Three categories are mentioned: computer as tool, as origin of concepts and metaphors, and as controller. The use of the computer in art gives rise to the idea of computing as representation- rather than just information-processing. Thus the computer can be said to 'belong' to artists and designers, and can be seen as a qualitative device. It is argued that computing is 'really' an art or design activity, and that this has implications for art, design and computing.     

Visualization and finite element techniques for seismic interpretation

Computational seismic modeling (CSM) is beginning to play an important role in the geophysical industry all over the world. People now realize that CSM can be a new and effective aid to seismic interpreters. One of the most important factors that has accelerated the development of CSM has been the rapid progress of supercomputers. With the increase in data obtained by the CSM research, the importance of visualization of the computed results began to be recognized.

The idea of visualization is not new; because massive amounts of numeric data are far more comprehensible when converted into graphical form, visualization is becoming an intimate part of many areas of research. Techniques for visualization, however, are still being developed, and visualization research is just beginning to be recognized as a cornerstone of future computer science. As scientists bring increasingly complex problems to computer science, visualization will become an even more essential tool for extracting science out of numbers.