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Theses/Dissertations

2002

Articles 1 - 7 of 7

Full-Text Articles in Management Information Systems

Knowledge Discovery And Modeling In Genomic Databases, Michael M. Yin Aug 2002

Knowledge Discovery And Modeling In Genomic Databases, Michael M. Yin

Dissertations

This dissertation research is targeted toward developing effective and accurate methods for identifying gene structures in the genomes of high eukaryotes, such as vertebrate organisms. Several effective hidden Markov models (HMMs) are developed to represent the consensus and degeneracy features of the functional sites including protein-translation start sites, mRNA splicing junction donor and acceptor sites in vertebrate genes. The HMM system based on the developed models is fully trained using an expectation maximization (EM) algorithm and the system performance is evaluated using a 10-way cross-validation method. Experimental results show that the proposed HMM system achieves high sensitivity and specificity in …

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Intramural, Collaborative Learning Systems, Robert S. Friedman Aug 2002

Intramural, Collaborative Learning Systems, Robert S. Friedman

Theses

This thesis focuses on three related concepts: problem-based collaborative learning; the use of multimedia tools in learning systems; and participatory design as a software engineering methodology to create multimedia tools to be used in learning systems. A literature review of the three areas is followed by an overview of the pedagogical, technological, and business trends that affect the direction of innovation in education, including problem-based learning. A discussion of a software engineering project to develop a multimedia application that enhances the learning of geography skills and puts the programming, interface design and multimedia systems capabilities of college students into action …

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Development And Characterization Of Methodology And Technology For The Alignment Of Fmri Time Series, Carlo Ciulla May 2002

Development And Characterization Of Methodology And Technology For The Alignment Of Fmri Time Series, Carlo Ciulla

Dissertations

This dissertation has developed, implemented and tested a novel computer based system (AUTOALIGN) that incorporates an algorithm for the alignment of functional Magnetic Resonance Image (fMRI) time series. The algorithm assumes the human brain to be a rigid body and computes a head coordinate system on the basis of three reference points that lie on the directions correspondent to two of the eigenvectors of inertia of the volume, at the intersections with the head boundary. The eigenvectors are found weighting the inertia components with the voxel's intensity values assumed as mass. The three reference points are found in the same …

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Collaborative Problem Solving And Program Development Model, Joanna Defranco-Tommarello May 2002

Collaborative Problem Solving And Program Development Model, Joanna Defranco-Tommarello

Dissertations

A model to enhance collaborative problem solving and program development is presented. The collaborative model is a detailed cognitive model that takes into consideration the cognitive and social activities that occur during collaborative problem solving and program development. The cognitive activities required for collaborative problem solving and program development are identified and integrated into a six-stage model. An extensive literature review in the associated fields is presented to show the need for the model described in this dissertation. In addition, a comprehensive study of tools to support collaboration during problem solving and program development was also performed as well as …

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An Investigation Of Environmental Factors That Influence Knowledge Transfer In The Air Force, Darin A. Ladd Mar 2002

An Investigation Of Environmental Factors That Influence Knowledge Transfer In The Air Force, Darin A. Ladd

Theses and Dissertations

The Air Force presently spends more than $4.9 billion annually on information technology (IT). However, the IT infrastructure has been identified as inappropriate for supporting the Air Force mission. To improve this situation the Air Force has identified infrastructure flexibility as key to future success. To find the level of flexibility, this study measured the perception of Air Force communications, computer, and information career field members (33SX and 3COX2 career fields) on the level of IT infrastructure modularity (data modularity and application modularity) and integration (platform compatibility and network connectivity). This thesis looked at two constructs that indicate IT infrastructure …

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An Exploratory Study Of The Air Force's Technical It Infrastructure Flexibility, Yashua W. Gustafson Mar 2002

An Exploratory Study Of The Air Force's Technical It Infrastructure Flexibility, Yashua W. Gustafson

Theses and Dissertations

Over the past decade, a considerable amount of attention has been given to federal legislation in making the federal government operate more efficiently and effectively by concentrating on Information Resource Management and Information Technology. In 1996, the Clinger-Cohen Act (CCA) was passed, creating the role of Chief Information Officer (CIO) in each agency of the Federal Government. This study assesses the impacts of the CCA on the USAF, with an emphasis on the Federal CIO Council Core Competencies. Given that this law and supporting policies have been in place for nearly six year, it would be valuable to assess USAF …

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Analyzing Differences Between Public And Private Sector Information Resource Management: Chief Information Officer Challenges And Critical Technologies, Scott M. Mitchell Feb 2002

Analyzing Differences Between Public And Private Sector Information Resource Management: Chief Information Officer Challenges And Critical Technologies, Scott M. Mitchell

Theses and Dissertations

The United States Air Force (AF) has experienced a downward trend in retention of information systems (IS) workers over the past five years. This research draws on the employee turnover model proposed by Mobley et al. (1979) and the work of Schein (1987) to measure the career anchors, job satisfaction, and turnover intention of AF IS workers to determine if those whose job type and career anchor match report higher satisfaction and lower turnover intention than those with a mismatch. A portion of the AF IS workforce (AFSCs 3C0X1, 3C0X2, and 3C2X1; N = 10,133) was surveyed through an online …

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