Digital Commons Network^™

Peer-To-Peer Grids, Geoffrey C. Fox, Dennis Gannon, Sung-Hoon Ko, Shrideep Pallickara, Xiaohong Qiu, Ahmet Uyar

Electrical Engineering and Computer Science - All Scholarship

We describe Peer-to-Peer Grids built around Integration of technologies from the peer-to-peer and Grid fields. We focus on the role of Web services linked by a powerful event service using uniform XML interfaces and application level routing. We describe how a rich synchronous and asynchronous collaboration environment can support virtual communities built on top of such infrastructure. Universal access mechanisms are discussed.

Digitization In An Archival Environment, Sally Mckay

E-JASL: Electronic Journal of Academic and Special Librarianship (1999-2009, Volumes 1-10)

Introduction

Cultural institutions such as museums, libraries, archives, and historical societies house remarkable collections of cultural artifacts. It is the responsibility of the staff working for those institutions to preserve, protect and provide responsible stewardship for the materials, and to the best of their ability, provide continued long-term access (Russell, 2000).

Advances in technology allow institutions to provide expanded access and education; however, there are important priorities that must be addressed prior to embarking on a digital conversion project.

Digitization in an archival environment includes taking a physical object or analog item, such as an art object, a tape recording, …

Semantic Web Processes, Jorge Cardoso, Amit P. Sheth

Kno.e.sis Publications

No abstract provided.

An Integrated, Secured, Open-Source Medical Prototype For Collaborative Patient Management On The Internet, Joseph Dabre Ramsey

CCAC Theses and Dissertations

Conventional approaches to building critical and secured systems are based on the use of commercial tools for development and maintenance. Changes in the marketplace and the acceptance of the open-source model have brought this assumption into question. The combination of open-source's rapid rise and the introduction of pervasive computing has made the computing industry more receptive to open-source tools and products. The open-source model allows systems to be controlled by a single individual or a small developer group that reduces dependence on individual experts. The availability of free system source codes, an expanding commercial support market, and increasing global collaborative …

Master Of Science Degree Programs 2003-2005, Nova Southeastern University

College of Engineering and Computing Course Catalogs

No abstract provided.

An Integrated Videoconferencing System For Heterogeneous Multimedia Collaboration, Ahmet Uyar, Wenjun Wu, Hasan Bulut, Geoffrey C. Fox

Electrical Engineering and Computer Science - All Scholarship

We have developed an integrated conferencing system, Global Multimedia Collaboration System, which enables heterogeneous multimedia clients to join the same real-time sessions. Our system provides support for a variety of protocols and applications, including H.323 clients, SIP clients and Access Grid rooms. In this paper, we would like to show the features and design principles of our conferencing server which facilitates audio and video communications among participating clients in a real-time conference.

Formal Concept Analysis And Resolution On Algebraic Domains - Preliminary Report, Matthias Wendt, Pascal Hitzler

Computer Science and Engineering Faculty Publications

We relate two formerly independent areas: Formal concept analysis and logic of domains. We will establish a correspondence between contextual attribute logic on formal contexts resp. concept lattices and a clausal logic on coherent algebraic cpos. We show how to identify the notion of formal concept in the domain theoretic setting. In particular, we show that a special instance of the resolution rule from the domain logic coincides with the concept closure operator from formal concept analysis. The results shed light on the use of contexts and domains for knowledge representation and reasoning purposes.

Learning Continuous Latent Variable Models With Bregman Divergences, Shaojun Wang, Dale Schuurmans

Kno.e.sis Publications

We present a class of unsupervised statistical learning algorithms that are formulated in terms of minimizing Bregman divergences— a family of generalized entropy measures defined by convex functions. We obtain novel training algorithms that extract hidden latent structure by minimizing a Bregman divergence on training data, subject to a set of non-linear constraints which consider hidden variables. An alternating minimization procedure with nested iterative scaling is proposed to find feasible solutions for the resulting constrained optimization problem. The convergence of this algorithm along with its information geometric properties are characterized.

A Linux-Based Graphical User Interface For The Creation And Reading Of The Frame Format: Version 2.4, Muhammed Aoun

Theses : Honours

To gain further knowledge of how the universe began, a new international co-operated project wishes not only to "see" stars exploding, but also to "hear" the explosion. It is theorised that the ability to "listen" to an explosion is possible by detecting gravitational waves. Gravitational waves are omitted when a star explodes, travelling through the cosmos at an exceptional speed. It is estimated that a gravity wave takes only 40 milliseconds to pass through the earth. Thus the aim of this international collaboration is to detect a gravitational wave. To accurately detect such waves, there needs to be several global …

On Query Processing And Optimality Using Spectral Locality-Preserving Mappings, Mohamed F. Mokbel, Walid G. Aref

Department of Computer Science Technical Reports

No abstract provided.

Interactive Multimedia In The Teaching Of The Irish Language In Primary School : Design, Implementation And Development., Máire Lynch

Theses

This thesis focuses on interactive multimedia use specifically in the area of vocabulary acquisition in a second language. It addresses the language learning requirements of third class (nine year olds) language learners, in Primary school. The study is based on existing second language acquisition research, computer - assisted language learning and the design and development of educational multimedia and it delivers an interactive application based on them. The study is firmly rooted in the foundations of the Revised Curriculum for Irish Primary Schools most especially in the language teaching methods it recommends and its emphasis on the use of information …

Sip Message Compression Technique For Efficient Multimedia Services In 3g Wireless Communications, Valerie Kenneally

Theses

The direction of the global cellular industry is primarily determined by two standardisation bodies, the 3rd Generation Partnership Project (3GPP) (in Europe and Asia) and 3GPP2 (in North America). Both of these standardisation bodies are currently specifying a core network to deliver IP based multimedia services over 3G wireless networks. One of the fundamental building blocks of this IP based multimedia core network is the use of SIP (Session Initiation Protocol) as the control protocol. The radio resource, that is the available frequency spectrum, in wireless communication systems remains a limiting factor in terms of the bandwidth available to an …

A Literature Review On Learner Control Strategies In Software Tutoring Systems, Xin Li, Leen-Kiat Soh

School of Computing: Technical Reports

This paper is a comprehensive research review on the learner control strategies in software tutoring systems. With the application of more computer techniques in education and the involvement of more adults in software tutoring systems, the learner control strategy has become more appreciated than tutor control or program control. In this paper, the efficiency and necessity of learner control in software tutoring systems is discussed through the description of learning mechanism. Some typical applications of learner control strategies in software tutoring systems are presented. The available learner control strategies are classified from two perspectives: educational theory, and software mechanism. Finally, …

Enterprise-Wide Strategic Information Systems Planning For Shanghai Bell Corporation, Y. Long, Fiona Fui-Hoon Nah, Z. Zhu

Research Collection School Of Computing and Information Systems

In response to increasing competition and technological advancement, Shanghai Bell Co., Ltd., a leading telecommunications enterprise located in Shanghai, China, carried out a major initiative to develop its next generation Information Technology/Information Systems (IT/IS) strategic plan. The initiative was prompted by limitations of its current enterprise application systems where the systems were neither able to keep up with the evolving needs due to organizational change nor satisfy the increasing demands for information sharing and data analysis. This case describes the environmental and organizational context of Shanghai Bell Corporation, and the problems and challenges it encountered in developing an enterprise-wide strategic …

Mobile Communications And Mobile Services, Keng Siau, Z. Shen

Research Collection School Of Computing and Information Systems

As wireless technologies evolve, the coming mobile revolution will bring dramatic and fundamental changes to the world. This revolution has already begun and is gaining momentum. The revolution will impact numerous facets of our daily lives and the way business is conducted. It will provide important data in real time to assist decision makers, exert great influence on communications between businesses and their customers, and transform the way we live our lives. This paper examines issues in providing services via wireless technologies, i.e. mobile services. The paper discusses the challenges facing mobile services, such as changes in business strategies, investment …

A Multi-Platform Application Suite For Enhancing South Asian Language Pedagogy, Tao Bai, Christopher K. Chung, Konstantin Läufer, Daisy Rockwell, George K. Thiruvathukal

Computer Science: Faculty Publications and Other Works

This interdisciplinary project explores the potential for handheld/wireless (H/W) technology in the context of language education within and beyond the classroom. Specifically, we have designed and implemented a suite of multi-platform (desktop/laptop, handheld, and browser) applications to enhance the teaching of South Asian languages such as Hindi-Urdu. Such languages are very difficult to learn, let alone write, and H/W devices (with their handwriting/drawing capabilities) can play a significant role in overcoming the learning curve. The initial application suite includes a character/word tracer, a word splitter/joiner, a smart flashcard with audio, contextual augmented stories for reading comprehension, and a poetic metronome. …

Agent Chameleons: Agent Minds And Bodies, Brian Duffy, Gregory O'Hare, Alan Martin, John Bradley, Bianca Schoen-Phelan

Conference papers

Agent design has to date concerned itself with the issues pertaining to a single body embedded in a single environment, whether virtual or real. This paper discusses the notion of an agent capable of migrating between information spaces (physical worlds, virtual reality, and digital information spaces). An architecture is presented that facilitates agent migration and mutation within such environments. This will in turn support agent

evolution the ultimate in agent adaptivity

A Deception Based Framework For The Application Of Deceptive Countermeasures In 802.11b Wireless Networks, Suen Yek

Theses : Honours

The advance of 802.11 b wireless networking has been beset by inherent and in-built security problems. Network security tools that are freely available may intercept network transmissions readily and stealthily, making organisations highly vulnerable to attack. Therefore, it is incumbent upon defending organisations to take initiative and implement proactive defences against common network attacks. Deception is an essential element of effective security that has been widely used in networks to understand attack methods and intrusions. However, little thought has been given to the type and the effectiveness of the deception. Deceptions deployed in nature, the military and in cyberspace were …

United States Diplomacy In The Age Of The Internet, Allison S. Greene

Graduate Program in International Studies Theses & Dissertations

The dynamics of international relations are constantly changing, and the origin of an extraordinary amount of that change can be traced to what has been coined the ‘Information Revolution.’ It is a revolution as profound and as significant as Gutenberg's invention of moveable metal type, and may result in social and political consequences of comparable magnitude. One of the most significant and far-reaching implications of this phenomenon is the emergence of the Internet. Since its inception, there have been many claims and assertions about existing and potential repercussions of the Internet within the diplomatic realm.

The purpose of this work …

Report On The Third Acm/Ieee Joint Conference On Digital Libraries (Jcdl), Michael L. Nelson

Computer Science Faculty Publications

The Third ACM/IEEE Joint Conference on Digital Libraries (JCDL 2003) was held on the campus of Rice University in Houston, Texas, May 27 - 31. Regarding the merging of the ACM and IEEE conference series, in the JCDL 2002 conference report published last year in D-Lib Magazine Edie Rasmussen noted, "Perhaps by next year...no one will remember that it wasn't always so" [1]. Judging by the number of participants I met who did not know that the ACM and IEEE used to hold separate digital library conferences, Rasmussen's prediction has come to pass.

Control Of Transport Dynamics In Overlay Networks, Qishi Wu

LSU Doctoral Dissertations

Transport control is an important factor in the performance of Internet protocols, particularly in the next generation network applications involving computational steering, interactive visualization, instrument control, and transfer of large data sets. The widely deployed Transport Control Protocol is inadequate for these tasks due to its performance drawbacks. The purpose of this dissertation is to conduct a rigorous analytical study on the design and performance of transport protocols, and systematically develop a new class of protocols to overcome the limitations of current methods. Various sources of randomness exist in network performance measurements due to the stochastic nature of network traffic. …

Under The Plastic: A Quantitative Look At Dvd Video Encoding And Its Impact On Video Modeling, Wu-Chi Feng, Jin Choi, Wu-Chang Feng, Jonathan Walpole

Computer Science Faculty Publications and Presentations

In this paper, we examine the DVD encoding process and the implications this process has video modeling and network traffic analysis. We have assembled a system that allows us to extract the video data from the DVDs as they were encoded for distribution. Analyzing the resulting video trace data, we describe how DVD encodings have evolved over time. In addition, our findings show that the underlying video content is fundamentally different than those produced by basic consumer video capture boards. We demonstrate how this affects current video modeling proposals and their affect on network traffic characterization. This research is based …

Web Service Technologies And Their Synergy With Simulation, Senthilanand Chandrasekaran, Gregory S. Silver, John A. Miller, Jorge Cardoso, Amit P. Sheth

Kno.e.sis Publications

The World Wide Web has had a huge influence on the computing field in general as well as simulation in particular (e.g., Web-Based Simulation). A new wave of development based upon XML has started. Two of the most interesting aspects of this development are the Semantic Web and Web Services. This paper examines the synergy between Web service technology and simulation. In one direction, Web service processes can be simulated for the purpose of correcting/improving the design. In the other direction, simulation models/components can be built out of Web services. Work on seamlessly using simulation as a part of Web …

On Computing Condensed Frequent Pattern Bases, Jian Pei, Guozhu Dong, Wei Zou, Jiawei Han

Kno.e.sis Publications

Frequent pattern mining has been studied extensively. However, the effectiveness and efficiency of this mining is often limited, since the number of frequent patterns generated is often too large. In many applications it is sufficient to generate and examine only frequent patterns with support frequency in close-enough approximation instead of in full precision. Such a compact but close-enough frequent pattern base is called a condensed frequent patterns-base.

In this paper, we propose and examine several alternatives at the design, representation, and implementation of such condensed frequent pattern-bases. A few algorithms for computing such pattern-bases are proposed. Their effectiveness at pattern …

Performance Of Multi-Dimensional Space- Filling Curves, Mohamed F. Mokbel, Walid G. Aref, Ibrahim Kamel

Department of Computer Science Technical Reports

No abstract provided.

Semantic Exploration Of Lecture Videos, Edward Altman, Yu Chen, Wai Chong Low

Research Collection School Of Computing and Information Systems

E-Learning is rapidly changing the way that universities and corporations offer education and training. In recent years, the acquisition and distribution of rich media content has been largely automated, However, existing applications are functionally and visually static and remain organized around the delivery media, rather than the knowledge representation and learning tasks of the student. The innovative approach of this system is the extraction of semantically meaningful structures in the lecture combined with text analysis to support task based queries. In this demonstration we will show this combination of pedagogical and content descriptions leads to novel forms of visualization and …

Load-Sensitive Transmission Power Control In Wireless Ad-Hoc Networks, Seung Jong Park, Raghupathy Sivakumar

Computer Science Faculty Research & Creative Works

Transmission power control in ad-hoc networks has hitherto been used only for achieving connectivity of networks. It has been implicitly assumed that the optimal throughput performance in ad-hoc networks can be achieved when using the minimum transmission power required to keep the network connected. However, in this paper we argue that such an assumption remains valid only under high node densities, which is not the characteristic of typical ad-hoc networks. Using both throughput and throughput per unit energy as the optimization criteria, we demonstrate that the optimal transmission power depends on several network characteristics such as the number of stations, …

On Clustering And Retrieval Of Video Shots Through Temporal Slices Analysis, Chong-Wah Ngo, Ting-Chuen Pong, Hong-Jiang Zhang

Research Collection School Of Computing and Information Systems

Based on the analysis of temporal slices, we propose novel approaches for clustering and retrieval of video shots. Temporal slices are a set of two-dimensional (2-D) images extracted along the time dimension of an image volume. They encode rich set of visual patterns for similarity measure. In this paper, we first demonstrate that tensor histogram features extracted from temporal slices are suitable for motion retrieval. Subsequently, we integrate both tensor and color histograms for constructing a two-level hierarchical clustering structure. Each cluster in the top level contains shots with similar color while each cluster in bottom level consists of shots …

Measuring Packet Reordering, John M. Bellardo, Stefan Savage

Computer Science and Software Engineering

The Internet architecture provides an unsequenced datagram delivery service. Nevertheless, many higher-layer protocols, such as TCP, assume that packets are usually delivered in sequence, and consequently suffer significant degradation when packets are reordered in flight. While there have been several recent proposals to create protocols that adapt to reordering, evaluating their effectiveness requires understanding the dynamics of the reordering processes prevalent in the Internet. Unfortunately, Internet packet sequencing is a poorly characterized and understudied behavior. This failing can be largely attributed to the lack of accurate and universally applicable methods for measuring packet reordering. In this paper, we describe a …

Rf Rendez-Blue: Reducing Power And Inquiry Costs In Bluetooth-Enabled Mobile Systems, Eric S. Hall, Charles D. Knutson, David K. Vawdrey

Faculty Publications

In resource-limited mobile computing devices, Bluetooth wireless technology imposes a weighty burden due to inefficient power utilization and a sluggish device discovery process. Buttressing Bluetooth with Radio Frequency Identification (RFID) technology by performing an operation we call “Rendez-Blue” alleviates these limitations. In the Rendez-Blue process, an RFID signal is used as a cue to “wake-up” a sleeping Bluetooth radio. This ensures that the Bluetooth radio is active only when needed, significantly reducing power consumption. In addition, RFID is used to communicate Bluetooth device information, allowing the user to bypass the traditional 10.24-second discovery process.