Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Computer Sciences

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 28231 - 28260 of 30120

Full-Text Articles in Entire DC Network

Laman Web E-Dagang Sistem Tempahan Dalam Talian (Stdt), Wan Abdul Majid Wan Amirah Jan 2001

Laman Web E-Dagang Sistem Tempahan Dalam Talian (Stdt), Wan Abdul Majid Wan Amirah

Student Works (2000-2009)

Sistem Tempahan Dalam Talian (STDT) ialah sebuah sistem berasaskan web yang dibangunkan dengan objektif untuk melaksaakan keperluan pembelian produk dalam talian melalui internet. Objektif sistem adalah untuk membolehkan pengguna yang melayari internet membuat tempahan produk pada satu masa supaya ianya ringkas dan mudah serta tidak perlu menggunakan banyak boring. Aplikasi-aplikasi yang dapat dilakukan oleh sistem ini ialah menerima tempahan daripada pengguna, menghapuskan atau menambah produk dan memaparkan jumlah harga kesemua tempahan yang dibuat. Sistem yang akan dibangunkan ini menggunakan Active Server Pages, Visual InterDev 6.0, Internet Explorer 4.0, Personal Web Server dan Microsoft Access 2000 pada platform Windows 98. Dibangunkan …


Smart Learning Environment System: E-Commerce Module, Yuen Meng Saw @ Chua Yuen Meng Jan 2001

Smart Learning Environment System: E-Commerce Module, Yuen Meng Saw @ Chua Yuen Meng

Student Works (2000-2009)

Smart learning environment system is a system that allows the maintaining and distribution of course materials via the web, administering and grading test for web-based courses, facilitates multilavel threaded discussions among student to student or student to lecture, manages the system and databases for the web-based courses and streamlines the ordering and purchasing of learning materials for web-based courses. This proposal is fully concentrated on building a system for the ordering and purchasing of learning materials for web-based courses. The main objective and significant of the system is to be easily integrated in the smart learning environment system. The learning …


Financial Information System (Fis), Chien Wee Kuan Jan 2001

Financial Information System (Fis), Chien Wee Kuan

Student Works (2000-2009)

Financial Information System for the Faculty of Computer Science and Information Technology (FCSIT-FIS) is a clien/server system introduced as a sub-system in the e-Faculty project. Its main purpose is to create a paperless, web-based system by providing on-line functions that allow users to access to FCSIT financial information. The main functions of FCSIT-FIS are: on-line spending request, financial information retrieval and account maintenance. FCSIT -FIS will be developing using ASP technology, VBScript, JavaScript and HTML language. Microsoft SQL Server will be use as the database server of the system.


Online Counselling Assistant (Oca Ver 1.0), Mohd Zaini Hana Salwani Jan 2001

Online Counselling Assistant (Oca Ver 1.0), Mohd Zaini Hana Salwani

Student Works (2000-2009)

OCA ver 1.0 adalah sistem pengurusdan pangkalan data berasaskan web yang dibangunkan untuk membantu komunikasi di FSKTM, Universiti Malaya. Ia direka untuk menjanakan interaksi antara pelajar, pensyarah dan tutor melalui web. OCA mempunyai 4 bahagian iaitu Bahagian Pensyarah, Bahagian Pelajar, Bahagian Tutor dan Bahagian Am. OCA yang berdaftar menghanar tugasan jika tutor atau lecture telah ,emdaftarkan matapelajaran atau tugasan tersebut memuat turun (download) nota jika nota telah dimuat naik (upload) oleh pensyarah dan melihat markah tugasan jika dibenarkan oleh tutor atau pensyarah. OCA membenarkan pensyarah mengadakan pengurusan mata pelajaran dan tugasan supaya dengan ini nota dapat dimuat naik oleh pensyarah …


Agent For Exam Processing, Foh Peng Chong Jan 2001

Agent For Exam Processing, Foh Peng Chong

Student Works (2000-2009)

Exam Processing System is a necessity to every Institution of higher learning and universities, due to the amount of students taking exams every year, the blooming of information technology era and achieving the paperless environment goal. It has been implemented to handle student's records or more widely recognized as the Student Information System (SIS). However, based on the current system, it can only keep records and do very little with it, which requires the administrators more time to generate the summary manually. Agent for Exam Processing is proposed to overcome these shortcomings. The Agent for Exam Processing is an intelligent …


Hadiah Sastera Melayu Berasas Web, Shamsuddin Mohamed Zakie Jan 2001

Hadiah Sastera Melayu Berasas Web, Shamsuddin Mohamed Zakie

Student Works (2000-2009)

Projek Hadiah Sastera Melayu berasas web ini berkisar tentang sumber kesusasteraan Melayu. Projek ini amat bermatlamatkan untuk memartabatkan dunia kesusasteraan Melayu supaya dikenali dan memotivasikan para karyawan di Malaysia Supaya terus bergiat dalam bidang ini. Bermotifkan dengan gabungan 2 bidang berbeza iaitu sastera dan teknologi komputer diharap dapat memberi kesan kepada pengguna dan pembangunan sistem agar kedua-dua bidang dapat bergabung untuk kepentingan masyarakat di Malaysia. Teknologi komputer terus berkembang mengikut peredaran zaman. Peranannya yang meluas banyak memberi manfaat kepada berbagai bidang termasuklah bidang kesusasteraan. Tugasan yang dipikul adalah untuk mewujudkan satu sistem pengkalan data didalam persekitaran Internet dan diberi nama …


Online Whiteboard, Bing Suang Chong Jan 2001

Online Whiteboard, Bing Suang Chong

Student Works (2000-2009)

The Network Integrated Whiteboard System is a audio integrated, graphics and network related application. This application creates a new pace on real-time presentation integrated with voice conferencing through networks, which are suitable for lecture presentation and Computer Based Education (CBE). This huge system will divide into three subsystems, or modules, and our team, which are constructed with three members, assign each subsystem to every member. The three subsystem mentioned are the whiteboard module, voice communication module and the server module. Mr. Wong Chan Weng will in charge in the voice communication module while Mr. Lee Chee Ching will cover the …


A Generator Of Random Instances Of Binary Finite Constraint Satisfaction Problems With Controllable Levels Of Interchangeability, Hui Zou, Amy Beckwith, Berthe Y. Choueiry Jan 2001

A Generator Of Random Instances Of Binary Finite Constraint Satisfaction Problems With Controllable Levels Of Interchangeability, Hui Zou, Amy Beckwith, Berthe Y. Choueiry

School of Computing: Technical Reports

In order to test the performance of algorithms for solving Constraint Satisfaction Problems (CSPs), we must establish a large collection of CSP instances that meet a given set of specifications, such as the number of variables, domain size, constraint density, tightness, etc. The goal of this report is to describe a generator of instances that have a specified degree of interchangeability. An example of such a generator is described in (Freuder and Sabin 1997), which generates non-reflexive constraints and does not allow us to control concurrently the degree of interchangeability and tightness. We have developed a technique and written a …


Infrastructure Support For Controlled Experimentation With Software Testing And Regression Testing Techniques, Hyunsook Do, Sebastian Elbaum, Gregg Rothermel Jan 2001

Infrastructure Support For Controlled Experimentation With Software Testing And Regression Testing Techniques, Hyunsook Do, Sebastian Elbaum, Gregg Rothermel

School of Computing: Technical Reports

Where the creation, understanding, and assessment of software testing and regression testing techniques are concerned, controlled experimentation is an indispensable research methodology. Obtaining the infrastructure necessary to support such experimentation, however, is difficult and expensive. As a result, progress in experimentation with testing techniques has been slow, and empirical data on the costs and effectiveness of techniques remains relatively scarce. To help address this problem, we have been designing and constructing infrastructure to support controlled experimentation with testing and regression testing techniques. This paper reports on the challenges faced by researchers experimenting with testing techniques, including those that inform the …


Hierarchy-Based Access Control In Distributed Environments, Jean-Camille Birget, Xukai Zou, Guevara Noubir, Byrav Ramamurthy Jan 2001

Hierarchy-Based Access Control In Distributed Environments, Jean-Camille Birget, Xukai Zou, Guevara Noubir, Byrav Ramamurthy

School of Computing: Conference and Workshop Papers

Access control is a fundamental concern in any system that manages resources, e.g., operating systems, file systems, databases and communications systems. The problem we address is how to specify, enforce, and implement access control in distributed environments. This problem occurs in many applications such as management of distributed project resources, e-newspaper and payTV subscription services.

Starting from an access relation between users and resources, we derive a user hierarchy, a resource hierarchy, and a unified hierarchy. The unified hierarchy is then used to specify the access relation in a way that is compact and that allows efficient queries. It is …


Optimization Of Amplifier Placements In Switch-Based Optical Networks, Ling Zong, Byrav Ramamurthy Jan 2001

Optimization Of Amplifier Placements In Switch-Based Optical Networks, Ling Zong, Byrav Ramamurthy

School of Computing: Conference and Workshop Papers

Wavelength division multiplexing (WDM) offers a solution to the problem of exploiting the large bandwidth on optical links; it is the current favorite multiplexing technology for optical communication networks. Due to the high cost of an optical amplifier, it is desirable to strategically place the amplifiers throughout the network in a way that guarantees that all the signals are adequately amplified while minimizing the total number amplifiers being used. Previous studies all consider a star-based network. This paper demonstrates an original approach for solving the problem in switch-based WDM optical network assuming the traffic matrix is always the permutation of …


The Impact Of Software Evolution On Code Coverage Information, Sebastian Elbaum, David Gable, Gregg Rothermel Jan 2001

The Impact Of Software Evolution On Code Coverage Information, Sebastian Elbaum, David Gable, Gregg Rothermel

School of Computing: Conference and Workshop Papers

Many tools and techniques for addressing software maintenance problems rely on code coverage information. Often, this coverage information is gathered for a specific version of a software system, and then used to perform analyses on subsequent versions of that system without being recalculated. As a software system evolves, however, modifications to the software alter the software’s behavior on particular inputs, and code coverage information gathered on earlier versions of a program may not accurately reflect the coverage that would be obtained on later versions. This discrepancy may affect the success of analyses dependent on code coverage information. Despite the importance …


Herba Online, Dol Bakri Zen Akmal Jan 2001

Herba Online, Dol Bakri Zen Akmal

Student Works (2000-2009)

Sistem Herba Online merupakan satu sistem informasi dengan pangkalan data berasaskan web yang dibangunkan untuk membantu memperkembangkan pengetahuan rakyat Malaysia amnya tentang herba di Malaysia serta kepentingannya dalam kehidupan. Objektif utama sistem dibangunkan ialah selaku pemangkin meningkatkan pengetahuan pengguna dalam topik herba dengan memudahkan cara mencapai maklumat yang mereka inginkan. Sasaran pengguna bagu sistem ini ialah individu atau organisasi yang terlibat dalam pembelajaran, kajian, penghasilan, pemprosesan atau pemasaran tumbuhan-tumbuhan herba atau produk-produk yang dihasilkannya. Bab pertama laporan ini menceritakan secara ringkas pengenalan, objektif dan skop projek. Bab kedua merupakan hasil daripada kajian literasi yang telah dilakukan berkaitan dengan topik. Secara …


Scalar Wave Diffraction By A Perfectly Soft Infinitely Thin Circular Ring, Fati̇h Di̇kmen, Ertuğrul Karaçuha, Yury Alexanderovich Tuchkin Jan 2001

Scalar Wave Diffraction By A Perfectly Soft Infinitely Thin Circular Ring, Fati̇h Di̇kmen, Ertuğrul Karaçuha, Yury Alexanderovich Tuchkin

Turkish Journal of Electrical Engineering and Computer Sciences

A new strong mathematically rigorous and numerically effective method for solving the boundary value problem of scalar (for example acoustic) wave diffraction by a perfectly soft (Dirichlet boundary condition) infinitely thin circular ring is proposed. The method is based on the combination of the Orthogonal Polynomials Approach, and on the ideas of the methods of analytical regularization. As a result of the suggested regularization procedure, the initial boundary value problem is equivalently reduced to the infinite system of the linear algebraic equations of the second kind, i.e., to an equation of the type ( (I + H) x = b …


Buckets: Smart Objects For Digital Libraries, Michael L. Nelson Jan 2001

Buckets: Smart Objects For Digital Libraries, Michael L. Nelson

Computer Science Faculty Publications

Current discussion of digital libraries (DLs) is often dominated by the merits of the respective storage, search and retrieval functionality of archives, repositories, search engines, search interfaces and database systems. While these technologies are necessary for information management, the information content is more important than the systems used for its storage and retrieval. Digital information should have the same long-term survivability prospects as traditional hardcopy information and should be protected to the extent possible from evolving search engine technologies and vendor vagaries in database management systems. Information content and information retrieval systems should progress on independent paths and make limited …


Dynamic Bandwidth Allocation Using Neural-Fuzzy In Atm Network, Yan Sing Chua Jan 2001

Dynamic Bandwidth Allocation Using Neural-Fuzzy In Atm Network, Yan Sing Chua

Student Works (2000-2009)

Dynamic bandwidth allocation is becoming one of the crucial issues in the design and research in the computer network. This is due to the continuous increasing demand of intensive applications that require more bandwidth while retaining higher quality. Dynamic bandwidth allocation utilises the current network state information to optimise the bandwidth distribution. The state information can be gathered through prediction using past data and measurement on current state. Agility and flexibility of dynamic bandwidth allocation using Neural-Fuzzy has the advantage that it can adapt to the state changes of the network. ATM network carries heterogeneous traffic and this causes the …


Network Simulation And Performance Evalution Of Ip Multicast Using Pim-Dm In Umjanetsim, Jui Hiangh Teoh Jan 2001

Network Simulation And Performance Evalution Of Ip Multicast Using Pim-Dm In Umjanetsim, Jui Hiangh Teoh

Student Works (2000-2009)

The demand for multicast capabilities in IP networks is growing very rapidly. New applications that take advantage of IP Multicast are being introduced constantly. Therefore, IP Multicast is regarded as one of the most important technologies in IP networks today. This dissertation focuses on the simulation and performance evaluation of IP Multicast using Protocol Independent Multicast- Dense Mode (PIM-OM) as the multicast routing protocol. The simulation is executed in a network simulator named UMJaNetSim, where custom components are built in order to simulate IP Multicast. First, the advantages and applications of IP Multicast, multicast addressing, Internet Group Management Protocol (IGMP), …


Mpls Vpn Simulation Using Mp-Ibgp, Tan Fong Ang Jan 2001

Mpls Vpn Simulation Using Mp-Ibgp, Tan Fong Ang

Student Works (2000-2009)

As Internet traffic continues to increase, companies are demanding greater speeds and better services to disseminate information to their customers, partners and employees. In order to provide reliable services and to support a variety of secure communications among a wide range of locations, Multiprotocol Label Switching Virtual Private Network (MPLS VPN) has been introduced. MPLS is an emerging technology that aims to address many of the existing issues associated with packet forwarding in today's internetworking environment. Whereas, VPN provides secure private connections through public infrastructure amongst multiple locations. MPLS­ based VPN provides isolation. security, simplified routing, easier provisioning as well …


Adaptive Web Sites By Web Usage Mining, Mario Rodney Creado Jan 2001

Adaptive Web Sites By Web Usage Mining, Mario Rodney Creado

Masters Theses

The World Wide Web has become a very popular marketing medium during the recent years. Many businesses use it extensively to publicize their products. Initially it began with static web sites. However as web sites got bigger and better, their maintenance became problematic. Just as business strategies change, so also will the orgainization of their web sites change. Hence the need of the hour is an adaptive web site (i.e. a web site that can organize itself based upon its usage). For this purpose, web usage mining techniques are used. The characteristics of the user's activity on the web site …


E-Spatial Technology For Spatial Analysis And Decision Making In Web-Based Land Information Management Systems, James Carswell Jan 2001

E-Spatial Technology For Spatial Analysis And Decision Making In Web-Based Land Information Management Systems, James Carswell

Articles

In this paper we describe e-SpatialTM technology, comprising an innovative software solution for deploying integrated web-based spatial applications within Oracle 9i Database environments. The two main components of the solution are the iSMARTTM database development technology and the i-SpatialTM Information Server (iSIS). This technology allows Oracle users to build and deploy both spatially enabled and standard Internet applications without requiring any application-specific GIS source code. It can be deployed on any Oracle supported hardware platform and on any device running a Java Virtual Machine, thus providing full support for wireless, PDAs and other mobile devices. In particular, we describe a …


Mobile Data Management, Sanjay Kumar Madria, Sourav S. Bhowmick Jan 2001

Mobile Data Management, Sanjay Kumar Madria, Sourav S. Bhowmick

Computer Science Faculty Research & Creative Works

The management of data in the mobile computing environment offers new challenging problems. Existing software needs to be upgraded to accommodate this environment. To do so, the critical parameters need to be understood and defined. We have surveyed some problems and existing solutions


Arc - An Oai Service Provider For Digital Library Federation, Xiaoming Liu, Kurt Maly, Mohammad Zubair, Michael L. Nelson Jan 2001

Arc - An Oai Service Provider For Digital Library Federation, Xiaoming Liu, Kurt Maly, Mohammad Zubair, Michael L. Nelson

Computer Science Faculty Publications

The usefulness of the many on-line journals and scientific digital libraries that exist today is limited by the inability to federate these resources through a unified interface. The Open Archive Initiative (OAI) is one major effort to address technical interoperability among distributed archives. The objective of OAI is to develop a framework to facilitate the discovery of content in distributed archives. In this paper, we describe our experience and lessons learned in building Arc, the first federated searching service based on the OAI protocol. Arc harvests metadata from several OAI compliant archives, normalizes them, and stores them in a search …


Smart Objects And Open Archives, Michael L. Nelson, Kurt Maly Jan 2001

Smart Objects And Open Archives, Michael L. Nelson, Kurt Maly

Computer Science Faculty Publications

Within the context of digital libraries (DLs), we are making information objects "first-class citizens". We decouple information objects from the systems used for their storage and retrieval, allowing the technology for both DLs and information content to progress independently. We believe dismantling the stovepipe of "DL-archive-content" is the first step in building richer DL experiences for users and insuring the long-term survivability of digital information. To demonstrate this partitioning between DLs, archives and information content, we introduce "buckets": aggregative, intelligent, object-oriented constructs for publishing in digital libraries. Buckets exist within the "Smart Object, Dumb Archive" (SODA) DL model, which promotes …


The Design Of 3d Cyberspace As User Interface: Advantages And Limitations, Maria Borisovna Quick Jan 2001

The Design Of 3d Cyberspace As User Interface: Advantages And Limitations, Maria Borisovna Quick

Theses : Honours

Virtual reality propagandists, technologists and the Internet community have long debated the issue of the usability of online three-dimensional (3D) environments. A lot of work was published about the benefits of 3D spaces for human-computer interaction and information visualisation due to their realism (Anders, Kalawsky, Crossley, Davies, McGrath, Rejman-Greene, 1998, Hamit, 1993, Heim, 1992, Aukstakalnis, Blatner, Roth, 1992). This topic also receives continuous industry support including standardisation of Virtual Reality Modeling Language ( VRML, VRML Consortium, 1997) and the more recent Macromedia & Intel alliance "to bring web 3D to the mainstream" (200 1, Intel Corporation). The actual implementation …


Ontologies And Electronic Commerce, Dieter Fensel, Deborah L. Mcguinness, Ellen Schulten, Wee-Keong Ng, Ee Peng Lim, Guanghao Yan Jan 2001

Ontologies And Electronic Commerce, Dieter Fensel, Deborah L. Mcguinness, Ellen Schulten, Wee-Keong Ng, Ee Peng Lim, Guanghao Yan

Research Collection School Of Computing and Information Systems

Ontologies are the first step toward realizing the full power of online e-commerce. Ontologies enable machine-understandable semantics of data, and building this data infrastructure will enable completely new kinds of automated services. Software agents can search for products, form buyer and seller coalitions, negotiate about products, or help automatically configure products and services according to specified user requirements. The combination of machine-processable semantics of data based on ontologies and the development of many specialized reasoning services will bring the Web to its full power. The authors discuss: taxonomies; information sources; future issues; business viewpoints; the e-marketplace; and B2B e-commerce standardisation …


Incorporating Window-Based Passage-Level Evidence In Document Retrieval, Wensi Xi, Richard Xu-Rong, Christopher Soo Guan Khoo, Ee Peng Lim Jan 2001

Incorporating Window-Based Passage-Level Evidence In Document Retrieval, Wensi Xi, Richard Xu-Rong, Christopher Soo Guan Khoo, Ee Peng Lim

Research Collection School Of Computing and Information Systems

This study investigated whether document retrieval can be improved if documents are divided into smaller sub-documents or passages and the retrieval score for these passages are incorporated in the final retrieval score for the whole document. The documents were segmented by sliding a window of a certain size across the document and extracting the words displayed each time the window stopped. A retrieval score was calculated for each of the passages extracted and the highest score obtained by a passage of that size was taken as the document’s passage-level score for that window size. A range of window sizes was …


Depth-First Search Embedded Wavelet Algorithm For Hardware Implementation, Li-Minn Ang Jan 2001

Depth-First Search Embedded Wavelet Algorithm For Hardware Implementation, Li-Minn Ang

Theses: Doctorates and Masters

The emerging technology of image communication over wireless transmission channels requires several new challenges to be simultaneously met at the algorithm and architecture levels. At the algorithm level, desirable features include high coding performance, bit stream scalability, robustness to transmission errors and suitability for content-based coding schemes. At the architecture level, we require efficient architectures for construction of portable devices with small size and low power consumption. An important question is to ask if a single coding algorithm can be designed to meet the diverse requirements. Recently, researchers working on improving different features have converged on a set of coding …


An Investigation Into The Use Of Software Code Metrics In The Industrial Software Development Environment, Tim Littlefair Jan 2001

An Investigation Into The Use Of Software Code Metrics In The Industrial Software Development Environment, Tim Littlefair

Theses: Doctorates and Masters

This work describes a project that investigates the use of software metrics based on measurement of source code in industrial software development. Literature is examined relating to considerations of quality in industry; to software engineering; to emergent technologies in the software industry including the object-oriented paradigm and software patterns; to software product and process metrics; and to cultural factors affecting workplaces in the software industry. It then expounds theoretical and practical work aimed at specifying, designing and implementing a source code analyzer for use in a typical industrial project setting. There is an explanation of the design and outcomes of …


An Efficient And Practical Scheme For Privacy Protection In E-Commerce Of Digital Goods, Feng Bao, Robert H. Deng, Peirong Feng Dec 2000

An Efficient And Practical Scheme For Privacy Protection In E-Commerce Of Digital Goods, Feng Bao, Robert H. Deng, Peirong Feng

Research Collection School Of Computing and Information Systems

It is commonly acknowledged that customers’ privacy in electronic commerce should be well protected. The solutions may come not only from the ethics education and legislation, but also from cryptographic technologies. In this paper we propose and analyze a privacy protection scheme for e-commerce of digital goods. The scheme takes cryptography as its technical means to realize privacy protection for online customers. It is efficient in both computational cost and communication cost. It is very practical for real e-commerce systems compared with previous solutions. The cryptographic technique presented in this paper is rather simple. But the scheme has great application …


Control Challenges In Multi-Level Adaptive Video Streaming, Dylan Mcnamee, Charles Krasic, Kang Li, Ashvin Goel, Erik Walthinsen, David Steere, Jonathan Walpole Dec 2000

Control Challenges In Multi-Level Adaptive Video Streaming, Dylan Mcnamee, Charles Krasic, Kang Li, Ashvin Goel, Erik Walthinsen, David Steere, Jonathan Walpole

Computer Science Faculty Publications and Presentations

Streaming video is one of the fastest-growing applications of the Internet. The Internet’s diversity and dynamism demands that video streams adapt to ensure maximum quality at all times. This paper describes the control challenges we have encountered in the Quasar project’s “multi-level” adaptive streaming video player. We first describe the framework and environment of the player. This framework uses software feedback to control resource allocation as well as the quality of media delivery. We present the control challenges raised by our framework, which include horizontal and vertical feedback composition, difficult to model systems, and unpredictable, non-linear actuators. We describe some …