Digital Commons Network^™

Development Of Object-Oriented Components For Atm Network Simulation With Emphasis On Schedule Policies In Traffic Shaping, Chee Sum Wong

Student Works (2000-2009)

Asynchronous Transfer Mode (ATM) is considered to be the ground which B-ISDN is to be built. The traffic control of ATM network is important to provide Quality of Service (QoS) for network applications Therefore, different traffic management procedures have been introduced to achieve network performance objectives. Traffic shaping is one of the traffic management mechanisms that able to protect the network and the end-system from congestion probleam. This project focuses on the development for simulation of different scheduling policies in traffic shaping with object-oriented approach. The simulator is designed and implemented to ensure the correctness of scheduling within the network …

Web Based Agent For Promotion Of Mercantile - Company Management, Hean Giap Tan

Student Works (2000-2009)

This is an e-commerce project that suitable for medium-scaled company. It allows companies to register as retailer and sell their product online. Customer can choose and compare products' price from different retailer in this system and pay for their products online using credit cards. Before developing this system, surveys on several development tools are carried on. After the literature surveys, appropriate software tools are chosen. Besides, some existing Malaysia e-commerce website also investigated and their weaknesses are identified. Strength of foreign e-commerce is reviewed, hopes that it will help in developing the system. Furthermore, correct methodology of the project is …

To Explore Agent Technology In E-Commerce Mighty House Agent, Thirumalai Phiyadharshini

Student Works (2000-2009)

Agent technology is becoming more popular among system designers who want their system to be more personalized, continuously running and semi-autonomous. These properties make agents useful for a wide variety of information and process management tasks. It should come as no surprise that these same qualities are particularly useful for the information-rich and process-rich environment of electronic commerce. As such agent technology in electronic commerce (e-commerce) would be essential to improve on-line shopping which is becoming more and more popular these days. It is in these roles that agent system designers have the challenge to accurately identify and the opportunity …

A Model To Evaluate The Effect Of Organizational Adaptation, Holly A. H. Handley, Alexander H. Levis

Engineering Management & Systems Engineering Faculty Publications

When an organization’s output declines due to either internal changes or changes in its external environment, it needs to adapt. In order to evaluate the effectiveness of different adaptation strategies on organizational per- formance, an organizational model composed of individual models of a five stage interacting decision maker was designed using an object oriented design approach and implemented as a Colored Petri net. The concept of entropy is used to calculate the total activity value, a surrogate for decision maker workload, based on the functional partition and the adaptation strategy being implemented. The individual decision maker’s total activity is monitored, …

Design Verification And Functional Testing Of Finite State Machines, Mark W. Weiss, Sharad C. Seth, Shashank K. Mehta, Kent L. Einspahr

School of Computing: Conference and Workshop Papers

The design of a finite state machine can be verified by simulating all its state transitions. Typically, state transitions involve many don’t care inputs that must be fully expanded for an exhaustive functional verification. However, by exploiting the knowledge about the design structure it is shown that only a few vectors from the fully expanded set suffice for both design verification and testing for manufacturing defects. The main contributions of the paper include a unified fault model for design errors and manufacturing faults and a function-based analysis of the circuit structure for the purpose of generating tests under the unified …

Multi -Mission Attitude Determination System For Balloon Flight, Liping Mo

Doctoral Dissertations

MADS (Multi-mission Attitude Determination System) is a new software package used to determine the attitude of instruments on a high-altitude balloon employed for scientific experiments. There is no existing system for the automated determination of the attitude of instruments in balloon experiments, so we have developed MADS to do the data analysis for balloon experiments to find the location of astrophysical sources such as gamma-ray or x-ray sources.

The two areas that required most work were modeling star trackers and modeling the motion of the balloon. Star trackers are used on satellites, but are far too expensive and sophisticated to …

Towards Comparative Profiling Of Parallel Applications With Pperfdb, Christian Leland Hansen

Dissertations and Theses

Due to the complex nature of parallel programming, it is difficult to diagnose and solve performance related problems. Knowledge of program behavior is obtained experimentally, with repeated runs of a slightly modified version of the application or the same code in different environments. In these circumstances, comparative performance analysis can provide meaningful insights into the subtle effects of system and code changes on parallel program behavior by highlighting the difference in performance results across executions.

I have designed and implemented modules which extend the PPerfDB performance tool to allow access to existing performance data generated by several commonly used tracing …

An Approach To Networking In Irish Primary Schools, Donal A. O'Connor

Theses

In this Thesis, I hope to develop an approach to networking in the Irish Primary school which will provide practical as well as theoretical advice to Primary Teachers. In the pages that follow, I will detail a general outline of the principles of computer networking and detail models appropriate to the primary school.

At the outset, I wish to acknowledge that there are as many solutions to the primary school’s networking requirements as there are individual schools. This document is intended as a general set of guidelines for the average Primary school in this country. By this, I mean schools …

A Fresh Look At The Provision Of Bandwidth To A Health Agency, James G. Leahy

Theses

This thesis describes development of a networking infrastructure to support a Regional Health Service in Ireland. It covers:-

• The design, building, commissioning and delivery of a Forward Emergency Control Vehicle to provide the video, voice and data communications needed to enhance delivery of patient care in Disaster Situations. The main focus here is on the integration of satellite and terrestrial communications.

• By studying the history of telecommunications provision over copper, the best use is made of the legacy copper cabling in and between existing buildings on a campus to provide both voice and data services.

• A financial …

Ambiguity-Directed Sampling For Qualitative Analysis Of Sparse Data From Spatially-Distributed Physical Systems, Chris Bailey-Kellogg, Naren Ramakrishnan

Computer Science Technical Reports

A number of important scientific and engineering applications, such as fluid dynamics simulation and aircraft design, require analysis of spatially-distributed data from expensive experiments and complex simulations. In such data-scarce applications, it is advantageous to use models of given sparse data to identify promising regions for additional data collection. This paper presents a principled mechanism for applying domain-specific knowledge to design focused sampling strategies. In particular, our approach uses ambiguities identified in a multi-level qualitative analysis of sparse data to guide iterative data collection. Two case studies demonstrate that this approach leads to highly effective sampling decisions that are also …

The Partial Evaluation Approach To Information Personalization, Naren Ramakrishnan, Saverio Perugini

Computer Science Faculty Publications

Information personalization refers to the automatic adjustment of information content, structure, and presentation tailored to an individual user. By reducing information overload and customizing information access, personalization systems have emerged as an important segment of the Internet economy. This paper presents a systematic modeling methodology— PIPE (‘Personalization is Partial Evaluation’) — for personalization. Personalization systems are designed and implemented in PIPE by modeling an information-seeking interaction in a programmatic representation. The representation supports the description of information-seeking activities as partial information and their subsequent realization by partial evaluation, a technique for specializing programs. We describe the modeling methodology at a …

A Robot Team That Can Search, Rescue, And Serve Cookies: Experiments In Multi-Modal Person Identification And Multi-Robot Sound Localization., Doug Blank, G. Beavers

Computer Science Faculty Research and Scholarship

A team of three robots placed second in both the Urban Search and Rescue and Hors d’Oeuvres Anyone? events at the 2000 American Association of Artificial Intelligence au- tonomous robot competitions. This paper describes the multi- robot, low-cost sound localization technique, and the multi- sensor, person recognition system used in the AAAI contests by the robot team.

The Extraction Of Classification Rules And Decision Trees From Independence Diagrams, Robert W. Kerbs

CCAC Theses and Dissertations

Databases are growing exponentially in many application domains. Timely construction of models that represent identified patterns and regularities in the data facilitate the prediction of future events based upon past performance. Data mining can promote this process through various model building techniques. The goal is to create models that intuitively represent the data and perhaps aid in the discovery of new knowledge.

Most data mining methods rely upon either fully-automated information-theoretic or statistical algorithms. Typically, these algorithms are non-interactive, hide the model derivation process from the user, require the assistance of a domain expert, are application-specific, and may not clearly …

Dynamic Update Techniques For Online Maps And Attributes Data, Thanh H. Pham

CCAC Theses and Dissertations

Online databases containing geographic and related tabular data for maps and attributes often require continuous updates from widely distributed sources afield. For some applications, these data are dynamic, and thus are of little value if they do not reflect the latest information or changes. A status map that depicts graphically temporal data affecting accountability is an example of this type of data. How can accommodations be made collectively for the perpetual data updates in the database and the need to deliver online information in real time without making concessions? The goal of the dissertation was to analyze and evaluate techniques …

Combining Multiple Representations For Pen-Based Handwritten Digit Recognition, Fevzi̇ Ali̇moğlu, Ethem Alpaydin

Turkish Journal of Electrical Engineering and Computer Sciences

We investigate techniques to combine multiple representations of a handwritten digit to increase classification accuracy without significantly increasing system complexity or recognition time. In pen-based recognition, the input is the dynamic movement of the pentip over the pressure sensitive tablet. There is also the image formed as a result of this movement. On a real-world database of handwritten digits containing more than 11,000 handwritten digits, we notice that the two multi-layer perceptron (MLP) based classifiers using these representations make errors on different patterns implying that a suitable combination of the two would lead to higher accuracy. We implement and compare …

Graduate School Of Computer And Information Sciences--Master Of Science Degree Programs 2001-2003, Nova Southeastern University

College of Engineering and Computing Course Catalogs

No abstract provided.

On The Folkman-Lawrence Topological Representation Theorem For Oriented Matroids Of Rank 3, Jürgen Bokowski, Susanne Mock, Ileana Streinu

Computer Science: Faculty Publications

We present a new direct proof of the Folkman-Lawrence topological representation theorem for oriented matroids of rank 3. © 2001 Academic Press.

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.

Guidelines For Development Of Courses For Delivery Over The Iowa Communications Network, Gary F. Hasman

CCAC Theses and Dissertations

This paper examines the quality of education as it relates to the Iowa Communications Network (ICN). It reviews the literature to determine a working definition of quality that was used to create a list of characteristics desirable in teachers who use technology. A list of such teachers was solicited from three administrative committees of the ICN and from the directors of the state's 15 area education agencies. Four teachers were selected from the list and their approach to creating programs for delivery over the ICN was examined. Personal interviews were used to discover commonalities among the four teachers' approaches to …

Design And Implementation Of An Intranet-Solution Especially With Workflow Aspects, Robert Loew

Theses

An Intranet support a new or simply an easier information system for all the workers within a company using internet technology. On the one hand, employees can use Web technology and very simple tools to provide and navigate information. On the other hand, the costly and time-consuming business of installing and maintaining software on local PCs can be avoided by using Browser-based Intranet applications. Ideally, it would be possible to access all forms of information processing using one and the same Web browser. This is the aim of the Intranet Project upon which this thesis is based.

Various technologies for …

B-Nodes: A New Scalable High Level Abstraction Model, Stanislaw P. Maj, Craig William Caulfield

Research outputs pre 2011

This paper proposes a new modeling technique called B-Nodes. B-Nodes represent a new, high-level abstraction that allows technical detail to be controlled using top-down recursive decomposition. This abstraction. is independent of architectural detail and can therefore accommodate rapid changes in technology. The use of recursive decomposition allows B-Nodes to be used not only for entire e-commerce system but also sub-modules within this system. The use of fundamental units allows the performance of heterogeneous technologies to be compared and other units to be derived. Results to date indicate no comparable model exists. Should further work validate this technique the authors recommend …

Educating Professional Software Engineers: Pathways And Progress In The Australian Experience, Rick Duley, David Veal, Stanislaw P. Maj

Research outputs pre 2011

Australia has seized the international initiative in the recognition of software engineers as professionals. Of the 37 universities in Australia offering undergraduate courses in computing, eleven offer courses in software engineering which are accredited by the Institute of Engineers, Australia (IEAust) and which may lead the graduate to membership of the Institute. In this way, the Institute has plausible claim to being the first national professional engineering body in the world to have accredited four-year undergraduate software engineering degrees as professional qualifications. The paper traces the development of the relationship between the Institute of Engineers and the computing industry and …

Inference Of Regular Languages Using Model Simplicity, Philip Hingston

Research outputs pre 2011

We describe an approach that is related to a number of existing algorithms for the inference of a regular language from a set of positive (and optionally also negative) examples. Variations on this approach provide a family of algorithms that attempt to minimise the complexity of a description of the example data in terms of a finite state automaton model. Experiments using a standard set of small problems show that this approach produces satisfactory results when positive examples only are given, and can be helpful when only a limited number of negative examples is available. The results also suggest that …

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

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.

Searching For A Quantum Algorithm To Solve The Traveling Salesman Problem, Buckley Hopper

Honors Capstone Projects and Theses

No abstract provided.

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 …

Accurate Parameter Estimation For An Articulatory Speech Synthesizer With An Improved Neural Network Mapping, Hali̇s Altun, Tankut Yalçinöz, K. Mervyn Curtis

Turkish Journal of Electrical Engineering and Computer Sciences

Neural network (NN) applications have recently been employed to extract the parameters of an articulatory speech synthesizer from a given speech signal. Results from these attempts showed that a single NN is insufficient to cover all of the possible configurations uniquely. Moreover, apart from their computational advantages, NN mapping is so far not superior to the other mapping techniques [1]. Thus there is a clear need to improve NN solution to the inverse problem. Results from our earlier experiments with an articulatory speech synthesizer have shown that the statistical characteristic of the articulatory target pattern vectors can be exploited for …

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

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 …