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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.

Polysilicon Emitter Bipolar Transistors, Todd C. Sieger

Journal of the Microelectronic Engineering Conference

Polysilicon emitter vertical NPN transistors were fabricated in an attempt to create devices with very high current gains and high forward Early voltages. TMA SUPREM-3 simulations were used to optimize the process to obtain emitter junction depths of 0.05 and 0.08um. Final emitter junction depths of 0.1um, or less, were measured. High current gains were not achieved, due to high base doping.

Bipolar Device Fabrication Using Rit's Cmos Technology To Develop A Bicmos Process, Luigi Ternullo Jr

Journal of the Microelectronic Engineering Conference

An NPN bipolar transistor process was designed and fabricated for incorporation with RIT’s N well CMOS technology to develop BiCMOS devices. The only additions to the CMOS process were the base masking step, base implant, and drive. Base dose was varied to achieve current gains of 50, 100, and 200 using SUPREM-3. Unfortunately, do to an incomplete etch of the collector region, a rework had to be performed, whose added temperature steps pushed the emitter through the base.

Santa Clara Magazine, Volume 33 Number 2, Winter 1991, Santa Clara University

Santa Clara Magazine

10 - GROWING UP ADOPTED Santa Clarans who have adopted children or are adopted discuss their experiences with interracial adoption and talk about the identity crisis years most adoptees face. By Susan Frey

16 - WHAT YOUR DOCTOR DOESN'T KNOW CAN KILL YOU A small but growing number of doctors around the world are turning to biological medicine to treat their patients with cancer and other serious diseases. By Michael Sheehan '77

20 - SCU's FATHER GOOSE When John Drahrnann shepherds undergraduates through the academic maze, he often counsels their parents as well. By Thomas F. Black and Maureen Mclnaney …

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 …

Deposition And Resorption Of Calcified Matrix In Vitro By Rat Marrow Cells, J. E. Davies, R. Chernecky, B. Lowenberg, A. Shiga

Cells and Materials

Rat bone marrow derived cells were cultured using a-Minimal Essential Medium supplemented with antibiotics, ascorbic acid and !3-glycerphosphate in the presence of 10-8M dexamethasone, on polystyrene and hydrophilic fluorocarbon substrata for periods of 2 - 4 weeks. During this time, a large yield of bone nodules was achieved and the elaborated tissue was examined by both scanning and transmission electron microscopy. The matrix produced by the cells contacting the underlying substratum was an afibrillar, globular, calcified material which formed a layer approximately 0.5μm thick. The calcium and phosphorus content of this material was confirmed by energy dispersive X-ray dot mapping …

The Development Of A Concrete Interlocking Partition Walling Unit, Haldane L. Johnson

Graduate Student Work

This research aimed to develop a better method of erecting internal partition walls for the Jamaican housing industry. An interlocking concrete block wall unit was considered appropriate because it used local materials and required semi-skilled labor to erect.

A timber mold was made to manually produce the 4 x 4 x 8 inch block. The concrete mix used had a cement to aggregate ratio of 1:7.5 and a sand to gravel ratio of 1:2 and a water cement ratio of 0.753. The average compressive strength of the block determined after three days was 351.56 psi. This translates into an expected …

Content And Strategies For Teaching Computer-Aided Drafting, Kurt Henry Becker

Engineering Education Faculty Publications

No abstract provided.

State Of Maine Rail Transportation Plan, Maine Department Of Transportation

Maine Collection

State of Maine Rail Transportation Plan

Revised Update - Prepared by the Department of Transportation, Bureau of Transportation Services, Augusta, Maine, 1991.

"The revised update of the State of Maine Rail Transportation Plan has been developed by the Rail Transportation Division. Bureau of Transportation Services of the Maine Department of Transportation pursuant to rules and regulations promulgated in Part 266 of Title 49 of the Code of Federal Regulation."

A Simple Method For Ultrastructural Evaluation Of Fragile Collagenous Biomaterials, Arthur J. Wasserman, Yasushi P. Kato, Frederick H. Silver

Cells and Materials

No abstract provided.

Automating Tolerance Synthesis: A Framework And Tools, Stephen C.-Y. Lu, Robert G. Wilhelm

Department of Mechanical and Materials Engineering: Faculty Publications

This paper describes CASCADE-T—a new approach to tolerance synthesis that uses a complete representation of the conditional tolerance relations that exist between features of a part under design. Conditional tolerances are automatically determined from functional requirements and shape information. Tolerance primitives based on the virtual boundary requirements approach to tolerance representation are composed to form more complex tolerance relationships. Artificial intelligence techniques, including a constraint network, frame-based system, and dependency tracking are used to support flexible and detailed computation for tolerance analysis and synthesis.

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.

What To Look For And Why When Buying A Telecommunications Switch

ACUTA: Other Publications

There are three characteristics of institutions of higher education that have a strong

impact on telecommunications:

. Campus Environment

. Multiple Service Populations

. Limited Budgets

Each characteristic translates into requirements for an effective telecommunication

system.

To Serve the Campus Environment

A campus is usually the first image associated with the word "college" or "university." Typically, institutions of higher education are housed in several buildings which may be fairly close together, or spread over some distance, perhaps reaching across a city or even a state.

To serve the campus user, a system must provide feature transparency, regardless of location. Small …

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 …

Application Of A Six-State Passive Track Filter Within A Weapon-Delivery System For A Lock-On-After-Launch Missile, Lynda Jeanne Ciaponi

Retrospective Theses and Dissertations

Knowing the benefits that a passive air target tracking system gives the host aircraft attempting to conceal its own presence on the battlefield, it is desired to determine whether the aircraft can also deliver one of its own lock-on-after-launch air-to-air missiles to the target via use of the same passive system. The objective of this thesis is to demonstrate that a passive six-state track filter can be successfully used within such a weapon delivery system. The role of the filter within the system is to track the enemy target in cartesian space utilizing only line-of-sight measurements and to track the …

Rs170 Image Processing Interface, Charlotte Christou

Retrospective Theses and Dissertations

This thesis deals with the hardware design and implementation of an image processing board that digitizes RS-170 video, passes it thru a sobel filter and sends the results to a high-resolution color printer. Most sobels deal with black and white images, but this thesis uses a static color image. The hardware design will allow direct printing from a RGB separate channel RSl 70 video source to a Tektronix 4693DX Color Printer through a Centronics port. It will also allow the red, blue and green video channels to pass through a sobel filter, with the resulting image being sent out to …

Impulse, Carey Crouse, Dee Feickert

Impulse (Jerome J. Lohr College of Engineering Publication)

Features:
[Page 2] EROS and SDSU join hands in international research
[Page 3] New aerospace project begins at SDSU
[Page 4] Energy Watch - Energy awareness committee's goal
[Page 5] Chamber gets message to alumni
[Page 5] New Agricultural Extension Network installed at SDSU
[Page 6] EED: Light up your future
[Page 7] Entrepreneur Award
[Page 8] John Kappenman - Alumnus leads effort to deploy 'watchdog' satellite
[Page 8] Russ Christiansen - A caring approach to management, engineering
College of Engineering Research and Outreach: 1-16 Center Section
Departments:
Students:
[Page 25] Pi Tau Sigma elects officers, welcomes members
[Page 25] …

Knowledge-Based Support For Management Of Concurrent, Multidisciplinary Design, Raymond E. Levitt, Yan Jin, Clive L. Dym

All HMC Faculty Publications and Research

Artificial intelligence (AI) applications to design have tended to focus on modeling and automating aspects of single discipline design tasks. Relatively little attention has thus far been devoted to representing the kinds of design 'metaknowledge' needed to manage the important interface issues that arise in concurrent design, that is, multidisciplinary design decision-making. This paper provides a view of the process and management of concurrent design and evaluates the potential of two AI approaches—blackboard architectures and co-operative distributed problem-solving (CDPS)—to model and support the concurrent design of complex artifacts. A discussion of the process of multidisciplinary design highlights elements of both …

Acuta Enews January 1991, Vol. 20, No. 1

ACUTA Newsletters

In This Issue

ECCI founder honored

Pocket phone test at UGA

Giving pays off for Emory

Digitizing X-rays

Illicall lists rates

Party Line

Freeway Control Via Ramp Metering: Development Of A Basic Building Block For An On-Ramp, Discrete, Stochastic, Mesoscopic, Simulation Model Within A Contextual Systems Approach, Mohamed Yaser Alkadri

Dissertations and Theses

One of the most effective measures of congestion control on freeways has been ramp metering, where vehicle entry to the freeway is regulated by traffic signals (meters). Meters are run with calibrated influx rates to prevent highway saturation. However, recent observations of some metering sites in San Diego, CA indicate that metering, during peak hour demand, is helping freeway flow while sometimes creating considerable traffic back-ups on local streets, transferring congestion problems from the freeway to intersections. Metering problems stem largely from the difficulty of designing an integrated, dynamic metering scheme that responds not only to changing freeway conditions but …

Toward The Development Of Decision Support Tools To Manage The Catis Project Life Cycle, Steven Wayne Mccrary

Doctoral Dissertations

"The American Public Works Administration (1987) states that communities' infrastructures are in need of repair and better management and recommends CATIS (Computer-Assisted Terraspatial Information Systems) as an excellent tool to assist in that endeavor. Small communities have several voids that CATIS technology can fill. This research reports on a life-cycle approach to CATIS adoption that will help small communities to better manage their infrastructure.

It is important for small communities to become aware of the types of systems available and what each system can do. This study presents a straightforward, understandable discussion of CATIS technologies, features, and applications. Justifying the …

Master Of Science, Computer Science 1991, Nova Southeastern University

College of Engineering and Computing Course Catalogs

No abstract provided.

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

College of Engineering and Computing Course Catalogs

No abstract provided.

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.

Center For Computer And Information Sciences 1991, Nova Southeastern University

College of Engineering and Computing Course Catalogs

No abstract provided.

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

College of Engineering and Computing Course Catalogs

No abstract provided.

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.

Compensation Modes In Counterdoped Rutile, M. M. Nasrallah, Harlan U. Anderson

Materials Science and Engineering Faculty Research & Creative Works

Thermogravimetric measurements were conducted on undoped, Nb⁵⁺ or Ta⁵⁺ donor-doped, and Al³⁺ acceptor doped rutile at 1000°C and 105-10-7 Pa oxygen activity. Nb⁵⁺ or Ta⁵⁺ doped rutile was counter doped by Al³⁺ in order to identify the role of Al³⁺ acceptor and its effect on donor doped rutile. Our results show that both dopants enter the lattice substitutionally for Ti⁴⁺, that Al³⁺ is as effective an acceptor as Nb⁵⁺ or that Ta⁵⁺ is effective as a donor, and the compensation occurs on a one-to-one basis. Earlier reports indicate …

A Mathematical Model Of A Sealed Nickel-Cadmium Battery, Deyuan Fan, Ralph E. White

Faculty Publications

A mathematical model for the charge and discharge of a sealed nickel-cadmium (Ni-Cd) battery is presented. The model is used to study the effect of transport properties of the electrolyte and kinetic parameters of the electrode reactions on the cell performance during the charge and discharge period. The model can also be used to demonstrate the changes of cell performance during cycling. Some comparisons between model predictions and experimental results indicate that the model predictions appear to fit the experimental data well. Sensitivity analyses illustrate that the sealed nickel-cadmium battery operates under activation control. It is also shown theoretically that …

A Nuclear Fragmentation Energy Deposition Model, John W. Wilson, D. M. Ngo, T. N. Forgarty, W. W. Buck

Mining Engineering Faculty Research & Creative Works

A formalism for target fragment transport is presented with application to energy loss spectra in thin silicon devices. A nuclear database is recommended that agrees well with the measurements of P.J. McNulty et al. (1980) using surface barrier detectors. High-energy events observed by P.J. McNulty et al. (1981), which are not predicted by intranuclear cascade models, are well represented by this work