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Power, Performance, And Perception (P3): Integrating Usability Metrics And Technology Acceptance Determinants To Validate A New Model For Predicting System Usage, Alan P. Fiorello Dec 1999

Power, Performance, And Perception (P3): Integrating Usability Metrics And Technology Acceptance Determinants To Validate A New Model For Predicting System Usage, Alan P. Fiorello

Theses and Dissertations

Currently, there are two distinct approaches to assist information technology managers in the successful implementation of office automation software. The first approach resides within the field of usability engineering, while the second approach is derived from the discipline of management information systems (MIS). However, neither approach has successfully produced conclusive evidence that explains what characteristics facilitate system use as well as influence user acceptance of the system. This study reports on the validity of a new model, entitled the Power, Performance, Perception (P3) model, that links the constructs of usability engineering to user acceptance. Additionally, speech recognition software (SRS) was …

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Information System Incidents: The Development Of A Damage Assessment Model, Mark D. Horony Dec 1999

Information System Incidents: The Development Of A Damage Assessment Model, Mark D. Horony

Theses and Dissertations

Information system (IS) incidents are on the rise. With low manning and undertrained information security specialists it is difficult for organizations to stop IS incidents from occurring. Once an incident has occurred it is the IS manager's responsibility to ensure that a full and accurate damage assessment has been accomplished. However, most IS managers lack the necessary tools to assess the damage from an incident. This exploratory thesis developed an IS incident damage assessment model (DAM) that can be part of the IS manager's tool kit. During the development of the model, it became apparent that the model was supported …

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Computational Geometry Column 36, Joseph O'Rourke Dec 1999

Computational Geometry Column 36, Joseph O'Rourke

Computer Science: Faculty Publications

Two results in "computational origami" are illustrated.

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Mining Multiple-Level Association Rules In Large Databases, Jiawei Han, Yongjian Fu Dec 1999

Mining Multiple-Level Association Rules In Large Databases, Jiawei Han, Yongjian Fu

Computer Science Faculty Research & Creative Works

A top-down progressive deepening method is developed for efficient mining of multiple-level association rules from large transaction databases based on the Apriori principle. A group of variant algorithms is proposed based on the ways of sharing intermediate results, with the relative performance tested and analyzed. The enforcement of different interestingness measurements to find more interesting rules, and the relaxation of rule conditions for finding `level-crossing' association rules, are also investigated in the paper. Our study shows that efficient algorithms can be developed from large databases for the discovery of interesting and strong multiple-level association rules.

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Off-Line Compression By Greedy Textual Substitution, Alberto Apostolico, Stefano Lonardi Dec 1999

Off-Line Compression By Greedy Textual Substitution, Alberto Apostolico, Stefano Lonardi

Department of Computer Science Technical Reports

No abstract provided.

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A Model For Active Techniques For Compressed Video Transmission, Sheng-Yih Wang, Bharat Bhargava Dec 1999

A Model For Active Techniques For Compressed Video Transmission, Sheng-Yih Wang, Bharat Bhargava

Department of Computer Science Technical Reports

No abstract provided.

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Towards The Evaluation Of Netcentric Scientific Applications, Shanhani Markus, Elias N. Houstis Dec 1999

Towards The Evaluation Of Netcentric Scientific Applications, Shanhani Markus, Elias N. Houstis

Department of Computer Science Technical Reports

No abstract provided.

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An Adaptable Network Architecture For Multimedia Traffic Management And Control, Sheng-Yih Wang, Bharat Bhargava Dec 1999

An Adaptable Network Architecture For Multimedia Traffic Management And Control, Sheng-Yih Wang, Bharat Bhargava

Department of Computer Science Technical Reports

No abstract provided.

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String Pattern Matching For A Deluge Survival Kit, Alberto Apostolico, Maxime Crochemore Dec 1999

String Pattern Matching For A Deluge Survival Kit, Alberto Apostolico, Maxime Crochemore

Department of Computer Science Technical Reports

No abstract provided.

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Experimental Evaluation Of Design Tradeoff In Specialized Virtual Machine For Multimedia Traffic In Active Networks, Sheng-Yih Wang, Bharat Bhargava Dec 1999

Experimental Evaluation Of Design Tradeoff In Specialized Virtual Machine For Multimedia Traffic In Active Networks, Sheng-Yih Wang, Bharat Bhargava

Department of Computer Science Technical Reports

No abstract provided.

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Implementing Sap R/3 At The University Of Nebraska, T. Sieber, Keng Siau, Fiona Fui-Hoon Nah, M. Sieber Dec 1999

Implementing Sap R/3 At The University Of Nebraska, T. Sieber, Keng Siau, Fiona Fui-Hoon Nah, M. Sieber

Research Collection School Of Computing and Information Systems

In April 1995, I asked four Nebraskans from the private sector and four senior people of the University to review the administrative processes of the University of Nebraska. In the appointment letter for this Task Force, I noted that many current administrative processes need to be examined to improve quality and productivity.

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Towards A Game Theory Model Of Information Warfare, David A. Burke Dec 1999

Towards A Game Theory Model Of Information Warfare, David A. Burke

Theses and Dissertations

The repeated game of incomplete information model, a subclass of game theory models, was modified to include aspects of information warfare. The repeated game of incomplete information model was first developed to analyze nuclear weapons disarmament negotiations. The central role of information in this model suggested its applicability to IW, which focuses on the defense and acquisition of information. A randomized experimental design was utilized to determine how people behave in a laboratory IW setting and to test the IW game model's basic predictions. The impact of experience and learning on IW performance was also assessed during the experiment. IW …

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The Window Distribution Of Multiple Tcps With Random Loss Queues, Archan Misra, Teunis Ott, John Baras Dec 1999

The Window Distribution Of Multiple Tcps With Random Loss Queues, Archan Misra, Teunis Ott, John Baras

Research Collection School Of Computing and Information Systems

Two approximate techniques for analyzing the window size distribution of TCP flows sharing a RED-like bottleneck queue are presented. Both methods presented first use a fixed point algorithm to obtain the mean window sizes of the flows, and the mean queue length in the bottleneck buffer. The simpler of the two methods then uses the ‘square root formula’ for TCP; the other method is more complicated. More often than not, the simpler method is slightly more accurate; this is probably due to the fact that window sizes of the different flows are negatively correlated.

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Measuring Information Quality Of Web Site: Development Of Instrument, P. Katerattanakul, Keng Siau Dec 1999

Measuring Information Quality Of Web Site: Development Of Instrument, P. Katerattanakul, Keng Siau

Research Collection School Of Computing and Information Systems

Web sites have been extensively used to provide information to consumers. While practitioners and researchers have proposed different criteria for effective Web site design based on common sense, intuition, and rules-ofthumb, effective Web site design focusing on the quality of the information it provides has rarely been studied. In this research, we propose a framework and develop an instrument to measure the information quality of individual or personal Web sites. The theoretical foundation of this research is the information quality framework. The proposed framework and instrument were tested in an individual or personal Web site context.

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Pushpush Is Np-Hard In 3d, Joseph O'Rourke, The Smith Problem Solving Group Nov 1999

Pushpush Is Np-Hard In 3d, Joseph O'Rourke, The Smith Problem Solving Group

Computer Science: Faculty Publications

We prove that a particular pushing-blocks puzzle is intractable in 3D. The puzzle, inspired by the game PushPush, consists of unit square blocks on an integer lattice. An agent may push blocks (but never pull them) in attempting to move between given start and goal positions. In the PushPush version, the agent can only push one block at a time, and moreover, each block, when pushed, slides the maximal extent of its free range. We prove this version is NP-hard in 3D by reduction from SAT. The corresponding problem in 2D remains open.

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Immaccs: A Military Decision-Support System, Jens G. Pohl, Anthony A. Wood, Kym Jason Pohl, Arthur J. Chapman Nov 1999

Immaccs: A Military Decision-Support System, Jens G. Pohl, Anthony A. Wood, Kym Jason Pohl, Arthur J. Chapman

Collaborative Agent Design (CAD) Research Center

The Integrated Marine Multi-Agent Command and Control System (IMMACCS) is a multi-agent, distributed system, designed to provide a ‘common tactical picture’ with integrated and meaningful decision-support facilities to authorized operators at any access node. IMMACCS has been implemented as a three-tier architecture that distinguishes between information, logic and presentation. It utilizes an object-serving communication facility with subscription and multi-casting capabilities that is based on the Common Object Request Broker Architecture (CORBA). With an emphasis on application, IMMACCS was designed and implemented in concert with its military users as an integral component of experiments conceived by the Marine Corps Warfighting Laboratory …

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Evaluating Maximum Likelihood Estimation Methods To Determine The Hurst Coefficient, Christina Marie Kendziorski, J. B. Bassingthwaighte, Peter J. Tonellato Nov 1999

Evaluating Maximum Likelihood Estimation Methods To Determine The Hurst Coefficient, Christina Marie Kendziorski, J. B. Bassingthwaighte, Peter J. Tonellato

Mathematics, Statistics and Computer Science Faculty Research and Publications

A maximum likelihood estimation method implemented in S-PLUS (S-MLE) to estimate the Hurst coefficient (H) is evaluated. The Hurst coefficient, with 0.5<HS-MLE was developed to estimate H for fractionally differenced (fd) processes. However, in practice it is difficult to distinguish between fd processes and fractional Gaussian noise (fGn) processes. Thus, the method is evaluated for estimating H for both fd and fGn processes. S-MLE gave biased results of H for fGn processes of any length and for fd processes of lengths less than 210. A modified method is proposed to correct for …

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Mental Models For Introductory Csc Concepts, Jennifer J. Wheeler, Erika Rogers Nov 1999

Mental Models For Introductory Csc Concepts, Jennifer J. Wheeler, Erika Rogers

Computer Science and Software Engineering

If is hypothesized that the development of mental models for a concept can lead to improved learning. The purpose of this paper is to identify, quantify, and analyze the mental models of students beginning to program in the UNIX environment. By focusing on 4 basic concept, this study abstracts current mental models from students and hypothesizes ways of improving these models. Ultimately, the results of the study will be incorporated into the design and implementation of a multimedia tutor. This tutor will attempt to teach people how to develop mental models in order to improve their learning.

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Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 15, Number 9, November 1999, College Of Engineering And Computer Science, Wright State University Nov 1999

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 15, Number 9, November 1999, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

A fourteen page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

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Teaching Object Technology In Industry Short Courses, David S. Janzen Nov 1999

Teaching Object Technology In Industry Short Courses, David S. Janzen

Computer Science and Software Engineering

No abstract provided.

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Investigation Of Image Feature Extraction By A Genetic Algorithm, Steven P. Brumby, James P. Theiler, Simon J. Perkins, Neal R. Harvey, John J. Szymanski, Jeffrey J. Bloch, Melanie Mitchell Nov 1999

Investigation Of Image Feature Extraction By A Genetic Algorithm, Steven P. Brumby, James P. Theiler, Simon J. Perkins, Neal R. Harvey, John J. Szymanski, Jeffrey J. Bloch, Melanie Mitchell

Computer Science Faculty Publications and Presentations

We describe the implementation and performance of a genetic algorithm which generates image feature extraction algorithms for remote sensing applications. We describe our basis set of primitive image operators and present our chromosomal representation of a complete algorithm. Our initial application has been geospatial feature extraction using publicly available multi-spectral aerial-photography data sets. We present the preliminary results of our analysis of the efficiency of the classic genetic operations of crossover and mutation for our application, and discuss our choice of evolutionary control parameters. We exhibit some of our evolved algorithms, and discuss possible avenues for future progress.

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An Access-Control Calculus For Spanning Administrative Domains, Jon Howell, David Kotz Nov 1999

An Access-Control Calculus For Spanning Administrative Domains, Jon Howell, David Kotz

Computer Science Technical Reports

In our quest to give users uniform access to resources unimpeded by administrative boundaries, we discovered that we needed transitive sharing among users, with the possibility of restricted access along each sharing link. To achieve that goal, we extend Lampson et al.'s calculus for access control to support restricted delegations. We discuss the advantages of our extension, including the simplification of constructs like ACLs and statement expiration. We also apply our extension to model the Simple Public Key Infrastructure and make suggestions about its future development. Our extended calculus exposes some surprising consequences in such systems that use restricted delegation.

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Kinematic Analysis Of Spatial Fixed-Axes Pairs Using Configuration Spaces, Ku-Jin Kim, Elisha Sacks, Leo Joskowicz Nov 1999

Kinematic Analysis Of Spatial Fixed-Axes Pairs Using Configuration Spaces, Ku-Jin Kim, Elisha Sacks, Leo Joskowicz

Department of Computer Science Technical Reports

No abstract provided.

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Compression Of Biological Sequences By Greedy Off-Line Textual Subsitution, Alberto Apostolico, Stefano Lonardi Nov 1999

Compression Of Biological Sequences By Greedy Off-Line Textual Subsitution, Alberto Apostolico, Stefano Lonardi

Department of Computer Science Technical Reports

No abstract provided.

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Optimal Discovery Of Subword Associations In Strings, Alberto Apostolico, Giorgio Satta Nov 1999

Optimal Discovery Of Subword Associations In Strings, Alberto Apostolico, Giorgio Satta

Department of Computer Science Technical Reports

No abstract provided.

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Data Organization Issues For Location-Dependent Queries In Mobile Computing, Sunjay Kumar Madria, Bharat Bhargava, Evaggelia Pitoura, Vijay Kumar Nov 1999

Data Organization Issues For Location-Dependent Queries In Mobile Computing, Sunjay Kumar Madria, Bharat Bhargava, Evaggelia Pitoura, Vijay Kumar

Department of Computer Science Technical Reports

No abstract provided.

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Performance Evaluation Of Multiple Time Scale Tcp Under Self-Similar Traffic Conditions, Tsunyi Tuan, Kihong Park Nov 1999

Performance Evaluation Of Multiple Time Scale Tcp Under Self-Similar Traffic Conditions, Tsunyi Tuan, Kihong Park

Department of Computer Science Technical Reports

No abstract provided.

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On Learning Probabilistic Automata, Alberto Apostolico Nov 1999

On Learning Probabilistic Automata, Alberto Apostolico

Department of Computer Science Technical Reports

No abstract provided.

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Performance Evaluation Of Cpu Isolation Miechanisms In A Multithreaded Os Kernel, David K.Y. Yau Nov 1999

Performance Evaluation Of Cpu Isolation Miechanisms In A Multithreaded Os Kernel, David K.Y. Yau

Department of Computer Science Technical Reports

No abstract provided.

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Leveraging Legacy Scientific Software With Mobile Agent Technology, Shanhani Markus, Elias N. Houstis Nov 1999

Leveraging Legacy Scientific Software With Mobile Agent Technology, Shanhani Markus, Elias N. Houstis

Department of Computer Science Technical Reports

No abstract provided.

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