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2001

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Full-Text Articles in Computer Sciences

A Proposal For A Scalable Internet Multicast Architecture, Sherlia Shi Jan 2001

A Proposal For A Scalable Internet Multicast Architecture, Sherlia Shi

All Computer Science and Engineering Research

We propose a new network and system architecture for multicast in the Internet. Our main objectives are to find a cost-effective way to scale to a large number of multicast groups whose members are geographically dispersed, and to enable small and less capable devices to participate in group communications. In order to preserve the efficiency of data distribution gained by multicast, while avoiding the control complexity previously exhibited by IP multicast, we propose the use of an overlay network for multicast services. We construct "virtual" multicast trees, which consist of unicast connections joining multicast servers in the network. These servers …

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Indra: A Distributed Approach To Network Intrusion Detection And Prevention, Qi Zhang, Ramaprabhu Janakiraman Jan 2001

Indra: A Distributed Approach To Network Intrusion Detection And Prevention, Qi Zhang, Ramaprabhu Janakiraman

All Computer Science and Engineering Research

While advances in computer and communications technology have made the network ubiquitous, they ahve also rendered networked systems vulnerable to malicious attacks orchestrated from a distance. These attacks, usually called cracker attacks or intrusions, start with crackers infiltrating a network through a vulnerable host and then going on to launch further attacks. Crackers depend on increasingly sophisticated techniques like using distributed attack sources. On the other hand, software that guards against them remains rooted in traditional centralized techniques, presenting an easily-targetable single point of failure. Scalable, distributed network intrusion prevention software is sorely needed. We propose Indra - a distributed …

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Formal Specification And Design Of Mobile Systems, Gruia-Catalin Roman, Christine Julien, Qingfeng Huang Jan 2001

Formal Specification And Design Of Mobile Systems, Gruia-Catalin Roman, Christine Julien, Qingfeng Huang

All Computer Science and Engineering Research

Termination detection, a classical problem in distributed computing, is revisited in the new setting provided by the emerging mobile computing technology. A simple solution tailored for use in ad hoc networks is employed as a vehicle for demonstrating the applicability of formal requirements and design strategies to the new field of mobile computing. The approach is based on well understood techniquest in specification refinement, but the methodology is tailored to mobile applications and helps designers address novel concerns such as the mobility of hosts, transient interactions, and specific coordination constructs. The proof logic and programming notation of Mobile UNITY provide …

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Rad Module Infrastructure Of The Field-Programmable Port Extender (Fpx) Version 2.0, David E. Taylor, John W. Lockwood, Naji Naufel Jan 2001

Rad Module Infrastructure Of The Field-Programmable Port Extender (Fpx) Version 2.0, David E. Taylor, John W. Lockwood, Naji Naufel

All Computer Science and Engineering Research

The Field-programmable Port eXtender (FPX) provides dynamic, fast, and flexible mechanisms to process data streams at the ports of the Washington University Gigabit Switch (WUGS-20). In order to facilitate the design and implementation of portable hardware modules for the Reprogrammable Application Device (RAD) on the FPX board, infrastructure components have been developed. These components abstract application module designers from device-specific timing specifications of off-chip memory devices, as well as processing system-level control cells. This document describes the design and internal functionality of the infrastructure components and is intended as a reference for future component revisions and additions. Application module designers …

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Relationship Between Two Generalized Images For Discrete And Differential Camera Motions, Robert Pless Jan 2001

Relationship Between Two Generalized Images For Discrete And Differential Camera Motions, Robert Pless

All Computer Science and Engineering Research

The recent popularity of catadioptic and multi-camera imaging systems indicates a need to create formal models for general, non-perspective camera geometries. Development of algorithmic tools for interpreting images from a generalized camera model will lead to a better understanding of how to design camera systems for particular tasks. Here we define the corollary to epi-polar constraints for standard cameras - the relationship between two images of a scene taken by generalized cameras from viewpoints related by discrete or differential motions.

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Legends As A Device For Interacting With Visualizations, Mihail E. Tudoreanu, Eileen Kraemer Jan 2001

Legends As A Device For Interacting With Visualizations, Mihail E. Tudoreanu, Eileen Kraemer

All Computer Science and Engineering Research

Users and developers of visualization tools must deal with the problem of specifying what information to show and how to represent it. Typically, the user's focus of interest will change over time, and the specifications must change with the user's interests. Techniques for the simple, direct, and intuitive creation and refinement of these specifications can be useful. In this paper we show how legends, a natural element of graphical displays, may be used as a direct and unobstrusive interaction device through which users may interactively specify new visualizations and animations.

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Services Provision In Ad Hoc Networks, Radu Handorean, Gruia-Catalin Roman Jan 2001

Services Provision In Ad Hoc Networks, Radu Handorean, Gruia-Catalin Roman

All Computer Science and Engineering Research

The client-server model continues to dominate distributed computing with increasingly more flexible variants being deployed. Many are centered on the notion of discovering services at run time and on allowing any system component to act as a service provider. The result is a growing reliance on the service registration and discovery mechanisms. This paper addresses the issue of facilitating such service provision capabilities in the presence of (logical and physical) mobility exhibited by applications executing over ad hoc networks. The solution being discussed entailes a new kind of service model, which we were able to build as an adaption layer …

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Secure Multi-Party Computation Problems And Their Applications: A Review And Open Problems, Wenliang Du, Mikhail J. Atallah Jan 2001

Secure Multi-Party Computation Problems And Their Applications: A Review And Open Problems, Wenliang Du, Mikhail J. Atallah

Electrical Engineering and Computer Science - All Scholarship

The growth of the Internet has triggered tremendous opportunities for cooperative computation, where people are jointly conducting computation tasks based on the private inputs they each supplies. These computations could occur between mutually untrusted parties, or even between competitors. For example, customers might send to a remote database queries that contain private information; two competing financial organizations might jointly invest in a project that must satisfy both organizations' private and valuable constraints, and so on. Today, to conduct such computations, one entity must usually know the inputs from all the participants; however if nobody can be trusted enough to know …

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Time-Domain Electric-Field Integral Equation With Central Finite Difference, Baek Ho Jung, Tapan Kumar Sarkar Jan 2001

Time-Domain Electric-Field Integral Equation With Central Finite Difference, Baek Ho Jung, Tapan Kumar Sarkar

Electrical Engineering and Computer Science - All Scholarship

In this paper, we present a new formulation using the time-domain electric-field integral equation (TD-EFIE) to obtain a transient scattering response from arbitrarily shaped conducting bodies. The time derivative of the magnetic vector potential is approximated with a central finite difference, and the scalar potential is time averaged by dividing it into two terms. This approach with an implicit method using central-difference results in accurate and stable transient scattering responses from conducting objects. Detailed mathematical steps are included, and several numerical results are presented.

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Entropy Generation Method To Quantify Thermal Comfort, S. C. Boregowda, S. N. Tiwari, S. K. Chaturvedi Jan 2001

Entropy Generation Method To Quantify Thermal Comfort, S. C. Boregowda, S. N. Tiwari, S. K. Chaturvedi

Mechanical & Aerospace Engineering Faculty Publications

The present paper presents a thermodynamic approach to assess the quality of human-thermal environment interaction and quantify thermal comfort. The approach involves development of entropy generation term by applying second law of thermodynamics to the combined human-environment system. The entropy generation term combines both human thermal physiological responses and thermal environmental variables to provide an objective measure of thermal comfort. The original concepts and definitions form the basis for establishing the mathematical relationship between thermal comfort and entropy generation term. As a result of logic and deterministic approach, an Objective Thermal Comfort Index (OTCI) is defined and established as a …

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Learning Recursive Functions Refutably, Sanjay Jain, Efim Kinber, Rolf Wiehagen, Thomas Zeugmann Jan 2001

Learning Recursive Functions Refutably, Sanjay Jain, Efim Kinber, Rolf Wiehagen, Thomas Zeugmann

School of Computer Science & Engineering Faculty Publications

Learning of recursive functions refutably means that for every recursive function, the learning machine has either to learn this function or to refute it, i.e., to signal that it is not able to learn it. Three modi of making precise the notion of refuting are considered. We show that the corresponding types of learning refutably are of strictly increasing power, where already the most stringent of them turns out to be of remarkable topological and algorithmical richness. All these types are closed under union, though in different strengths. Also, these types are shown to be different with respect to their …

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Wholes And Parts In General Systems Methodology, Martin Zwick Jan 2001

Wholes And Parts In General Systems Methodology, Martin Zwick

Complex Systems Faculty Publications and Presentations

Reconstructability analysis (RA) decomposes wholes, namely data in the form either of set-theoretic relations or multivariate probability distributions, into parts, namely relations or distributions involving subsets of variables. Data is modeled and compressed by variablebased decomposition, by more general state-based decomposition, or by the use of latent variables. Models, which specify the interdependencies among the variables, are selected to minimize error and complexity.

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Sistem Kiosk Perkahwinan Islam Versi 1.0 (Sipkom), Muftahuddin Nor Shafina Jan 2001

Sistem Kiosk Perkahwinan Islam Versi 1.0 (Sipkom), Muftahuddin Nor Shafina

Student Works (2000-2009)

Projek tahun akhir ini merupakan laporan teknikal bagi menyempurnakan sistem yang bertajuk "Sistem Kiosk Perkahwinan Islam versi 1.0" atau SIPKOM. la merupakan satu sistem yang memudahkan pengguna untuk mendapatkan maklumat-maklumat yang berkaitan dengan Perkahwinan Islam serta istilah-istilah yang berlaitan dengannya dengan lebih mudah dan cepat. SIPKOM dibangunkan dengan menggunakan bahasa pengaturcaraan Visual Basic Enterprise Edition versi 5.0 bagi kemudahan persekitaran pengguna tunggal yang berkonsepkan ramah pengguna serta mudah digunakan. Di dalam penyempurnaan projek ini, perbincangan terlebih dahulu dibuat bersama dengan penyelia projek bagi mendapatkan gambaran awal bagi ciri-ciri yang akan dibangunkan serta menghubungi pihak Jabatan Kemajuan Agama Islam Malaysia (JAKIM) …

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Visualizing Staff Information System (Vsis), Mook Lan Wong Jan 2001

Visualizing Staff Information System (Vsis), Mook Lan Wong

Student Works (2000-2009)

The Visualizing Staff Information System also known as VSIS is a system to keep track the personal record of the staff in a company and with effective visual displays which concerned with exploring data and information to gain insight and understanding of the data. The software development tool used are Visual Basic 6.0, Seagate Crystal Report 7.0 and Microsoft SQL Server 7.0 is used as a database management system. Prototype model is conducted in the system development. Before an interview was conducted, a set of interview questions were prepared and sent to the respective company. Global Soft Manufacturing was one …

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Sistem Electronic Theses Postgraduate, Abdul Majid Mariana Jan 2001

Sistem Electronic Theses Postgraduate, Abdul Majid Mariana

Student Works (2000-2009)

The technology improvement nowdays, has been supported a system development with the existence of various software forms. The competitive exists to fill up the user needs together with the development of information technology in this century. A software which will be developed is appropiate with a current development and user needs that always wishing for the innovation and also to reduce the usage of time. This research report will explain the phases of the system development, from the earlier research to the implementation process and test made. This system is call "Electronic Theses_PostGraduate". The main objective of this Electronic Theses …

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Fingerprint Recognition Using Neural Networks, Eng Hoe Kennie Yeoh Jan 2001

Fingerprint Recognition Using Neural Networks, Eng Hoe Kennie Yeoh

Student Works (2000-2009)

Traditional methods of fingerprint verification uses either complicated feature detection algorithms that are not specific to each fingerprint, or compare two fingerprint images directly using image processing toots. The former involves very complicated calculations and tedious algorithms, and the latter tend to work poorly. In this paper it is described a new method which takes the middle ground. This paper studies the implementation of the Fast Fourier Transform and Artificial Neural Networks into the recognition of fingerprints. With tests conducted on the implementation of the Fourier Transform as a method of fingerprint feature extraction, the use of the Fourier Transform …

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Web Based Agent For Transaction Of Mercantile-Security Measures, Wee Jing Yan Jan 2001

Web Based Agent For Transaction Of Mercantile-Security Measures, Wee Jing Yan

Student Works (2000-2009)

Malaysia is a nation whose growth has been carefully shaped and guided by strategic five-year development master plans. Providing the ultimate backdrop to these programs is a Vision 2020, a national agenda that sets out specific goals and objectives for long-term development. As a strategy to achieve the vision, Malaysia has embarked on an ambitious plan to leapfrog into the Information Age by providing intellectual and strategic leadership. Electronic Commerce has shown its potential power to revolutionize industry processes, structures and redefine the competitive landscape for businesses around the world. It aims to shape an electronic business environment competitive with …

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Bookshop Inventory Management System (Bims) /, Loong Po Chang Jan 2001

Bookshop Inventory Management System (Bims) /, Loong Po Chang

Student Works (2000-2009)

All undergraduates of the Faculty of Computer Science and Information Technology, University of Malaya are required to carry out a final year thesis project in computer or information technology related topic during their 3 years course in the university. This subject is one of the conditions must be fulfilled before they graduate. This final year thesis project takes 2 semesters and brings out 9 credit hours of total 120 credit hours. I, one of the students in the faculty, propose Bookshop Inventory Management System (BIMS) as my thesis title. I was assigned to and placed under the supervision of Prof …

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[Introduction To] Basic Java Programming: A Laboratory Approach, Lewis Barnett Jan 2001

[Introduction To] Basic Java Programming: A Laboratory Approach, Lewis Barnett

Bookshelf

For first- and second-year undergraduates, an introduction to programming with Java, an object-oriented programming language that is a popular choice for Web applications. Kent and Barnett (U. of Richmond) introduce algorithms and problem-solving approaches that are important to programming general.

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Aplikasi Wayarles Menggunakan Telefon Bimbit Dengan-Wap, Wan Osman Wan Maria Jan 2001

Aplikasi Wayarles Menggunakan Telefon Bimbit Dengan-Wap, Wan Osman Wan Maria

Student Works (2000-2009)

“Wireless Site Solution using WAP-enabled Mobile Phone” is an application developed based on WAP technology. It makes use of the N-tier Client/Server Architecture to provide users especially those who are still new in this technology. With wireless access to manage their daily task and get latest information as well. The main purpose of this project is to provide an alternative for users in managing their daily tasks in some simple clicks and also to allow users to access information in a very interesting way. There are two major modules in this application which are the user module and administrator module. …

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Sistem Pembelian Kereta Baru Dalam Talian, Jaafar Muhammad Hanif Jan 2001

Sistem Pembelian Kereta Baru Dalam Talian, Jaafar Muhammad Hanif

Student Works (2000-2009)

Latihan ilmiah merupakan salah satu kursus wajib yang mesti diambil bagi memenuhi keperluan pengijazahan dalam pengajian Sarjana Muda Sains Komputer Universiti Malaya. Bagi memenuhi tujuan ini, saya telah memilih tajuk sistem pembelian kereta baru sebagai tajuk tesis dan penyelia ialah En. Mustaffa Kamal b. Mohd Nor. Dalam membangunakan sesuatu sistem, cadangan projek diperlukan bagi menjelaskan kefahaman pelajar terhadap sistem yang akan dibangunkan. Dalam cadangan projek ini saya akan menerangkan secara ringkas tentang sistem yang akan dibangunkan, bagaimana sistem akan dibangunkan, objektif pembangunan sistem, apakah kelemahan dan kebaikan sistem yang akan dibangunkan, siapakah pengguna-pengguna sistem, peralatan-peralatan yang digunakan dalam pembangunan sistem, …

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Web Site And Information System For Idaman Realty, Gopal Krishnan Lavania Jan 2001

Web Site And Information System For Idaman Realty, Gopal Krishnan Lavania

Student Works (2000-2009)

I have chosen this topic of designing a web site for a real estate company as my project. This system which will be developed will give idaman realty an opportunity to have their own web site, whereby they can conduct business and attract customer to their company. This project is done in 2 part, WXET 3181 and WXET 3182. WXET 3181 will involve the system's proposal and documentation. While WXET 3182 will involve designing, implementing, testing and evaluating the system. This project is done as part of fulfilling the requirements for a Bachelor's Degree in Information Technology. I hope this …

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Vpn-Data Center System Database, Thai Hwan Gan Jan 2001

Vpn-Data Center System Database, Thai Hwan Gan

Student Works (2000-2009)

Computer has advanced from high technology equipment that only by large company in the old days to office equipment that is essential in an office. In the world of computer, improvement on service provided and lock out competition is very important The quantity of service, speed of processing, productivity, efficiency and effectiveness is very vital. The purpose of this project is to create a database system to a company that provides services and selling computer product. Beside that, we also provide VPNVirtual Private Network for the company's branch to access and to update the database. This is to provide more …

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E. Help Desk: A Natural Language Processing For Answering Query, Mohd. Nor Norwin Shariman Jan 2001

E. Help Desk: A Natural Language Processing For Answering Query, Mohd. Nor Norwin Shariman

Student Works (2000-2009)

This report is about a search engine, E. Help Desk that is to be deployed in a location where usually the users have a brief contact with the search engine. Thus it is designed to be very easy to use as it is designed to be intuitive, so as the learning curve for the search engine is very shallow. The system is divided into two modules, the user interface and the administrator module. The user interface provide· a basic search engine capability to the user to enable them to search for relevant article. In regard to place like a shopping …

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Fsktm Rooms Reservation System, Sheau Yun Voon Jan 2001

Fsktm Rooms Reservation System, Sheau Yun Voon

Student Works (2000-2009)

For the past few years, the room reservation system at Faculty of Computer Science and Information Technology (FSKTM), University Malaya, has been carried out manually. In order to keep up with fast growing technology, it is worthwhile to develop a computerized room reservation system. With this automated system, the faculty will be able to increase efficiency in management operations and time saving. Following from that, I have decided to develop this FSKTM Rooms Reservation System, or RRS as my final year project. FSKTM Rooms Reservation System is a combination of internet-based system and client-server application system. This system is developed …

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Sistem Tuntutan Kewangan Staf, Abdullah Sajat Muhaini Jan 2001

Sistem Tuntutan Kewangan Staf, Abdullah Sajat Muhaini

Student Works (2000-2009)

Sistem tuntutan kewangan bagi staff di fakulti Sains Komputer dan teknologi maklumat merupakan satu slstem yang bersandarkan aplikasi Intranet. Objektif daripada projek ini adalah untuk mengurangkan masa bagi proses penerimaan wang yang dituntut oleh kakitangan, meningkatkan cara yang konservatif dalam memohon tuntutan kewangan dan mengurangkan penggunaan kertas, Dalam proposal ini juga dicadangkan beberapa rekabentuk untuk memudahkan lagi pemahaman pembaca.

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E-Learning: Introduction To Personal Computers, Ahmad Anwar Jan 2001

E-Learning: Introduction To Personal Computers, Ahmad Anwar

Student Works (2000-2009)

WXES3182 is the final year project which involves doing a thesis. The purpose of doing this thesis is to apply the techniques learned during classes. The Final result of the thesis is to produce complete software. To actually produce the software, a development process will have to be followed through. Here application of the development phases are put to use such as analysis, design and implementation. In the first part of the thesis WXES3182, development in started and carried through up until design phase. WXES3182 will continue the development process until the completed product is produces. Software developmet phases such …

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Electronic Marketing, Sin Yong Choo Jan 2001

Electronic Marketing, Sin Yong Choo

Student Works (2000-2009)

In the world of twenty-first-century business, enterprise resource planning (ERP) and Internet technologies are rapidly coming together. ERP software is used to share accurate information with trading partners. Meanwhile, Internet help to connect people, streamline processes and help reduce costs. Easy-to-use, web-based business environments help companies get to the point, and focus on what they do best. Integrated Business Solutions (IBS) developed under ERP concept, which enables the company for managing their daily business processes systematically. IBS consists eight modules that meet the needs of customers, suppliers, partners and employees. The eight modules are E-Human Resource, E-Supplier, E-Banking, E-Sales, E-Marketing, …

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Lecture On-Line/On-Demand, Siew Ping Foo Jan 2001

Lecture On-Line/On-Demand, Siew Ping Foo

Student Works (2000-2009)

The on-line/on-demand lecture broadcasting is an ideal approach to meet the demand of effective and efficient communication for the fast growing web and multimedia technology. Thus, this project, the development of Lecture On-Line/On-Demand (LOL/LOD) broadcasting system provides the common functional components required for broadcasting both real time and not real time lectures. This will have resolved some existing education delivery bottlenecks such as time inconvenience, location dependence, space and tools limitation in the existing systems.Furthermore, there are viewer and administrator modules proposed for the LOL/LOD system. The viewer section allows the user to view, sort, search on-line or on-demand lectures …

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Sistem Pembelajaran Cerdas Dan Pengatucaraan C (Spc), Ahmad Norzam Yusri Jan 2001

Sistem Pembelajaran Cerdas Dan Pengatucaraan C (Spc), Ahmad Norzam Yusri

Student Works (2000-2009)

Sistem pembelajaran cerdas dan pengatucaraan C (SPC) adalah Intelligent Tutoring system (ITS) yang dibangunkan untuk pelajar-pelajar univsersiti yang mengambil kursus Sains Komputer dan Teknologi Maklumat serta pelajar fakulti kejuruteraan di mana subjek Bahasa Pengatucaraan C merupakan suatu subjek yang wajib. SPC merupakan satu alat perisian untuk memerhatikan serta mengawal pembelajaraan pelajar dan menyelesaikan masalah-masalah subjek yang khusus. Sistem pembelajaran cerdas adalah pakej arahan berasaskan komputer yang menggunakan teknik-teknik yang ditemui dalam penyelidikan-penyelidikan Kepintaran Buatan untuk membantu dalam pengajaran sesuatu subjek atau kepakaran. Tidak seperti sistem konvensional lain, rekabentuk SPC menggunakan pendekatan Cognitivisim dan ia mempunyai tiga bahagian iaitu Model Pelajar, …

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