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Full-Text Articles in Engineering

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, January 1991, College Of Engineering And Computer Science, Wright State University Jan 1991

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, January 1991, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

A twelve 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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Pthomas: An Adaptive Information Retrieval System On The Connection Machine., Robert Oddy, Bhaskaran Balakrishnan Jan 1991

Pthomas: An Adaptive Information Retrieval System On The Connection Machine., Robert Oddy, Bhaskaran Balakrishnan

School of Information Studies - Faculty Scholarship

This paper reports the state of development of PThomas, a network based document retrieval system implemented on a massively parallel fine-grained computer, the Connection Machine. The program is written in C*, an enhancement of the C programming language which exploits the parallelism of the Connection Machine. The system is based on Oddy’s original Thomas program, which was highly parallel in concept, and makes use of the Connection Machine’s single instruction multiple data (SIMD) processing capabilities. After an introduction to systems like Thomas, and their relationship to spreading activation and neural network models, the current state of PThomas is described, including …

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Forming Fine Particles, Dennis R. Alexander Jan 1991

Forming Fine Particles, Dennis R. Alexander

Department of Electrical and Computer Engineering: Faculty Publications

To alter feedstock material, the material is exposed to laser radiation applied at a selected angle of incidence, intensity and wavelength related to the refractive index of the feedstock material. Fine uniform particles may be formed through vapor explosion and/or plasma formation and used by this method to coat surfaces, such as with paint or adhesive or to suply uniform small particles to a heat engine. Moreover, moving materials such as a column of liquid may be subjected to high internal pressure and temperature for creating physical and chemical changes.

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Transportation Synthetic Modeling For New Villages In Northeast Florida Using Fsutms, Yazan Kamal Haddad Jan 1991

Transportation Synthetic Modeling For New Villages In Northeast Florida Using Fsutms, Yazan Kamal Haddad

Retrospective Theses and Dissertations

The Villages of Seminole Forest is a fifty-eight-thousand acre developnent located between Clay arrl Putnam Counties in Northeast Florida and is proposed to have a build-out year in 2043. As required by the Florida Deparbnent of Conmunity Affairs (OCA) , a Developnent of Regional Irn:Pact {DRI) was prepared to study the impact that this developnent might exert on nunerous elements, such as wetlands, wildlife, water, soils, flood-plains, air, and transportation. The Florida Standard Urban Transportation M::>del Structure {FSU'IMS) was utilized in preparing the transportation elanent of the DRI. A roadway network for the project was developed, and FSU'IMS was …

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Center For Computer And Information Sciences Master Of Science In Computer Information Systems Fall Courses 1991, Nova Southeastern University Jan 1991

Center For Computer And Information Sciences Master Of Science In Computer Information Systems Fall Courses 1991, Nova Southeastern University

College of Engineering and Computing Course Catalogs

No abstract provided.

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Simple Synchronous Detector For Spectroscopic Studies, Mokhtar Mofidi, M. Keith Hudson, Reagan Cole, James D. Wilson Jan 1991

Simple Synchronous Detector For Spectroscopic Studies, Mokhtar Mofidi, M. Keith Hudson, Reagan Cole, James D. Wilson

Journal of the Arkansas Academy of Science

Lock-in-amplifiers are used in many applications for signal processing and offer the ability to discriminate high levels of noise. While these instruments are very powerful and offer many features, they are not portable and are expensive. An economical and easy to use alternative circuit is presented which incorporates pre-amplification, reference, and synchronous detection on one circuit board. The design can be used in laboratory or process control situations where its small size and low cost are advantageous. The circuit was successfully applied to moderate and high level signals as seen in flame infrared emission detection and in a portable radiometer …

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Transforming A Rule-Based Program, Rose F. Gamble Jan 1991

Transforming A Rule-Based Program, Rose F. Gamble

All Computer Science and Engineering Research

Conflict resolution is a form of global control used in production systems to achieve an efficient sequential execution of a rule-based program. This type of control is not used to parallel production system models [6,13]. Instead, only those programs that make no assumptions regarding conflict resolution are executed in parallel. Therefore, the initial sequential rule-based programs are either executed in parallel without their conflict resolution strategy, which normally results in incorrect behavior, or the programs are transformed in an ad hoc manner to execute on an particular parallel production system model. As a result, these programs do not exhibit the …

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Master Of Science, Computer Science 1991, Nova Southeastern University Jan 1991

Master Of Science, Computer Science 1991, Nova Southeastern University

College of Engineering and Computing Course Catalogs

No abstract provided.

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Master Of Science--Computer Information Systems 1991-92, Nova Southeastern University Jan 1991

Master Of Science--Computer Information Systems 1991-92, Nova Southeastern University

College of Engineering and Computing Course Catalogs

No abstract provided.

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Center For Computer And Information Sciences Master Of Science In Computer Information Systems Spring Courses 1991, Nova Southeastern University Jan 1991

Center For Computer And Information Sciences Master Of Science In Computer Information Systems Spring Courses 1991, Nova Southeastern University

College of Engineering and Computing Course Catalogs

No abstract provided.

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Center For Computer And Information Sciences 1991, Nova Southeastern University Jan 1991

Center For Computer And Information Sciences 1991, Nova Southeastern University

College of Engineering and Computing Course Catalogs

No abstract provided.

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Center For Computer And Information Sciences 1991-1992 Catalog, Nova Southeastern University Jan 1991

Center For Computer And Information Sciences 1991-1992 Catalog, Nova Southeastern University

College of Engineering and Computing Course Catalogs

No abstract provided.

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Center For Computer And Information Sciences Doctor Of Science In Computer Science 1991-1992, Nova Southeastern University Jan 1991

Center For Computer And Information Sciences Doctor Of Science In Computer Science 1991-1992, Nova Southeastern University

College of Engineering and Computing Course Catalogs

No abstract provided.

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Itasq : An Ada-Based Interactive Tool For Assessing Software Quality, Ruby Marie Heintze Jan 1991

Itasq : An Ada-Based Interactive Tool For Assessing Software Quality, Ruby Marie Heintze

Retrospective Theses and Dissertations

The goal of producing high quality computer programs brings with it the need for a set of quantitative measures that software engineers can use to measure various aspects of software quality. These quantitative measures, known as software metrics, can measure different aspects of program quality. For example, McCabe's Complexity Metric measures the decision structure of a computer program; Halstead's Software Science measures program "impurities II such as unfactored expressions and unnecessary replacements; and Vitro•s Module Coupling Metric measures data transfer characteristics between modules. Using only one of these metrics would not provide a well rounded measure of overall software quality. …

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Multiple Input Node Dataflow Processor Architecture, Gokhan Kuru Jan 1991

Multiple Input Node Dataflow Processor Architecture, Gokhan Kuru

Theses and Dissertations

A new dataflow concept, Multiple Input Node is introduced to overcome the performance and efficiency degradation problems that exist in the current dataflow computation models where the computation unit, node, accepts 2 tokens at a time. Multiple Input Node is a new computation node which has 4 inputs, hence it can accept up to 4 token packets at a time. It can perform any simple arithmetic operation or combination of operations on these 4 input tokens. It is represented by a single instruction and performs the operations in a single instruction execution. This unique Multiple Input Node architecture reduces the …

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An Evaluation Of A Prototype Osi-Based Communications Architecture For The Distributed Interactive Simulation Application Utilizing The Isode, Margaret Lucas Loper Jan 1991

An Evaluation Of A Prototype Osi-Based Communications Architecture For The Distributed Interactive Simulation Application Utilizing The Isode, Margaret Lucas Loper

Retrospective Theses and Dissertations

The advent of computer networking has spawned a wide variety of applications and technologies. Among the most exiciting and pro1nising of these is Distributed Interactive Sin1ulation (DIS). This technology involves the interconnecting of simulated (virtual) environ men ts which allow participants in one simulation to interact, in real time, with those in another simulation, and observe their interactions by means of out-thewindow views of the individual simulators. The key to the evolution and worldwide acceptance of this DIS technology will be the adoption and integration of standard computer networking methodologies (i.e., Open Systems Interconnection (OSI)) into the overall DIS system …

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Multi-Input Multi-Output Flight Control System Design For The Yf-16 Using Nonlinear Qft And Pilot Compensation, Russell B. Miller Dec 1990

Multi-Input Multi-Output Flight Control System Design For The Yf-16 Using Nonlinear Qft And Pilot Compensation, Russell B. Miller

Theses and Dissertations

Nonlinear Quantitative Feedback Theory (QFT) and pilot compensation techniques are used to design a 2x2 flight control system for the YF-16 aircraft over a large range of plant uncertainty. The design is based on numerical input- output time histories generated with a FORTRAN implemented nonlinear simulation of the YF-16. The first step of the design process is the generation of a set of equivalent linear time-invariant (LTI) plant models to represent the actual nonlinear plant. It has been proven that the solution to the equivalent plant problem is guaranteed to solve the original nonlinear problem. Standard QFT techniques are then …

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A Low-Cost Part-Task Flight Training System: An Application Of A Head Mounted Display, David A. Dahn Dec 1990

A Low-Cost Part-Task Flight Training System: An Application Of A Head Mounted Display, David A. Dahn

Theses and Dissertations

To investigate the feasibility of using head-mounted display(HMD) and Computer Image Generators(CIG) in a low cost part-task trainer, we created a prototype system. Our approach was to build a virtual world interface using a HMD to an existing flight simulator application. This allowed a CIG with only one graphics channel to drive the display. To investigate which class of computing platform was suitable for use as the CIG, a cooperative thesis effort was launched to host the simulator on a mini-computer and micro-computer platform. The appropriate CIG could then be determined through demonstration and comparison between the systems. A software …

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Recursive Optimization Of Digital Circuits, John Knutson Dec 1990

Recursive Optimization Of Digital Circuits, John Knutson

Theses and Dissertations

The goal of this thesis is twofold: first, to identify the advantages and disadvantages of existing optimization systems and second, to develop an optimization system that uses Boolean principles to generate a recursive realization of combinational logic. Current multi-level optimization systems fall into two categories: local optimization which removes redundancy by pattern matching on a local scale and global optimization which works with the equations that specify a circuit rather than with the circuit implementation itself. While global systems are very flexible and can produce near-optimal solutions, they are inherently complex. This research effort demonstrates that an effective global optimization …

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Extraction And Measurement Of Multi-Level Parallelism In Productions Systems, George A. Sawyer Dec 1990

Extraction And Measurement Of Multi-Level Parallelism In Productions Systems, George A. Sawyer

Theses and Dissertations

Productions systems provide a flexible and powerful means for expressing and solving problems using high-level reasoning approaches. Unfortunately applications based on the production system paradigm are very compute intensive and therefore execute very slowly on conventional computer architectures. Lack of execution speed therefore limits the use of production systems in many time sensitive and complex tasks. Researchers have demonstrated that increasing the execution speed of production systems through the use of small scale parallel computer architecture is possible, however demonstrated execution speed is still several orders of magnitude below the desired level of performance. Past research indicates that there exists …

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Sql/Nf Translator For The Triton Nested Relational Database System, Craig W. Schnepf Dec 1990

Sql/Nf Translator For The Triton Nested Relational Database System, Craig W. Schnepf

Theses and Dissertations

The problem addressed in this thesis concerns the design and implementation of a high level data base query language translator based on the nested relational data model. The objective of the model is to increase the performance of the relational model by modeling real-world objects in the problem domain into nested relations. The translator is designed within the EXODUS extensible architectural framework for building application-specific database systems. The SQL/NF query language used for the nested relational model is an extension of the popular relational model query language SQL. The query language is translated into a nested relational algebra (Colby algebra) …

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Graphical Representation Of Parallel Algorithmic Processes, Edward M. Williams Dec 1990

Graphical Representation Of Parallel Algorithmic Processes, Edward M. Williams

Theses and Dissertations

Algorithm animation is a visualization method used to enhance understanding of functioning of an algorithm or program. Visualization is used for many purposes, including education, algorithm research, performance analysis, and program debugging. This research applies algorithm animation techniques to programs developed for parallel architectures, with specific on the Intel iPSC/2 hypercube. While both P-time and NP-time algorithms can potentially benefit from using visualization techniques, the set of NP-complete problems provides fertile ground for developing parallel applications, since the combinatoric nature of the problems makes finding the optimum solution impractical. The primary goals for this visualization system are: Data should be …

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A Multi-Scale Approach For Recognizing Complex Annotations In Engineering Documents., Andrew Francis Laine, William Ball, Arun Kumar Dec 1990

A Multi-Scale Approach For Recognizing Complex Annotations In Engineering Documents., Andrew Francis Laine, William Ball, Arun Kumar

All Computer Science and Engineering Research

This paper describes a novel method of character recognition targeted for extracting complex annotations found in engineering documents. The results of this work will make it possible to capture the information contained in documents used to support facilities management and manufacturing. The recognition problem is made difficult in part because characters and text may be expressed in arbitrary fonts and orientations. Our approach includes a novel incremental strategy based on the multi-scale representation of wavelet decompositions. Our approach is motivated by biological mechanisms of the human visual systems. Using wavelets as a set of basis functions, we may decompose an …

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Segment Streaming For Efficient Pipelined Televisualization, Fengmin Gong Nov 1990

Segment Streaming For Efficient Pipelined Televisualization, Fengmin Gong

All Computer Science and Engineering Research

The importance of scientific visualization for both science and engineering endeavors has been well recognized. Televisualization becomes necessary because of the physical distribution of data, computation resources, and users involved in the visualization process. However, televisualization poses a number of challenges to the designers of communication protocols. A pipelined televisualization (PTV) model is proposed for efficient implementation of a class of visualization applications. Central to the proposed research is the development of a segment of streaming IPC (interprocess communication) mechanism in support of efficient pipelining across very high speed internetworks. This requires exploration of special issues arising from extending a …

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Specification And Equivalence Verification Of Sequential Circuits Via Vhdl, Richard L. Miller Nov 1990

Specification And Equivalence Verification Of Sequential Circuits Via Vhdl, Richard L. Miller

Theses and Dissertations

This research presents a merger of the specification and design capabilities of the Very High Speed Integrated Circuit (VHSIC) Hardware Description Language (VHDL) with a known verification method (UC Berkeley's verify software) in order to solve the design and verification problem of sequential circuits. The fruits of this research are a behavioral VHDL model for sequential circuit specification, a structural VHDL model for sequential circuit design, and a method for comparing two circuits described using these VHDL models in order to demonstrate circuit equivalence. The behavioral and structural VHDL models were developed and tested within the Intermetric's VHDL software support …

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Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, November 1990, College Of Engineering And Computer Science, Wright State University Nov 1990

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, November 1990, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

A ten 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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Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, October 1990, College Of Engineering And Computer Science, Wright State University Oct 1990

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, October 1990, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

An eight 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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A Software Design Tool For Predictable Performance In Real-Time, Data Flow Architectures, Brij Mohan V. Mandala Oct 1990

A Software Design Tool For Predictable Performance In Real-Time, Data Flow Architectures, Brij Mohan V. Mandala

Electrical & Computer Engineering Theses & Dissertations

A software design tool which aids in the performance evaluation and selection of operating points for an algorithm implemented in ATAMM defined data flow architectures is presented in this thesis. ATAMM (Algorithm To Architecture Mapping Model) is a new graph theoretic model developed by researchers at Old Dominion University and the NASA-Langley Research Center. ATAMM is capable of modeling the execution of large-grained algorithms on distributed data flow architectures. A software tool is required for predicting the performance, determining the resource requirements and for selecting suitable operating points for an ATAMM based system. The ATAMM Design Tool presented in this …

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Highly Concurrent Logically Synchronous Multicast, Kenneth J. Goldman Oct 1990

Highly Concurrent Logically Synchronous Multicast, Kenneth J. Goldman

All Computer Science and Engineering Research

We define the logically synchronous multicast problem, which imposes a natural and useful structure on message delivery order in an asynchronous system. In this problem, a computation proceeds by a sequence of multicasts, in which a process sends a message to some arbitrary subset of the processes, including itself. A logically synchronously multicast protocol must make it appear to every process as if each multicast occurs simultaneously at all participants of that multicast (sender plus receivers). Furthermore, if a process continually wishes to sends a message, it must eventually be permitted to do so. We present a highly concurrent solution …

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Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, September 1990, College Of Engineering And Computer Science, Wright State University Sep 1990

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, September 1990, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

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

Go to article

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