Digital Commons Network^™

Three Dimensional Localization Of Lesions From Digitized Mammograms, Amy L. Magnus

Theses and Dissertations

This thesis describes new algorithms to localize regions-of-interests (ROIs) three dimensionally from a pair of digitized mammograms. This work is intended to add a layer of sophistication to computer aided diagnosis by putting to use the fixed and measurable parameters of mammographic imaging. The fixed parameters are the source to film orientation and the podium-image distance. Measurable parameters are the rotation angle of the x-ray tube from the horizontal and the compression depth (the distance from compression paddle to contact podium distance) at the time of imaging. As an additional benefit, three dimensional localization algorithms alleviate the confusion radiologists may …

The Effects Of Risk Management Program Implementation On Worker Safety Knowledge, John C. Donnelly

Community & Environmental Health Theses & Dissertations

This study examined the effect of the implementation of a risk management program tool on worker safety knowledge in a composite building material fabrication facility whose workers suffered from an increasingly high injury (incidence) rate in recent years. Risk assessment codes (RACs) and job safety analyses (JSAs) were the primary tools used to introduce workers to the concept of risk. Because employee involvement is a crucial element in JSA development. employee input was frequently solicited throughout JSA development.

The study instrument consisted of a pre-test and post-test survey, to which an experimental and control group were subjected. The instrument was …

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 11, Number 9, November 1995, 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.

Acuta Enews November 1995, Vol. 24, No. 11

ACUTA Newsletters

In This Issue

From the President

Voice Cellular Services at CMU

CTI for Universities Network 2000 at UTMB

From ACUTA Headquarters

Photovoltaic Applications For Disaster Relief, Florida Solar Energy Center, William Young

FSEC Energy Research Center®

Hurricanes, floods, tornadoes, and earthquakes are natural disasters that can happen at any time destroying homes, businesses, and natural surroundings. One such disaster, Hurricane Andrew, devastated South Florida leaving several hundred-thousand people homeless. Many people were without electrical service, functioning water and sewage systems, communications, and medical services for days, even weeks in the aftermath of the storm. Emergency management teams, the military and countless public and private organizations staged a massive relief effort. Dependency on electrical utility power became a pronounced problem as emergency services were rendered to survivors and the rebuilding process started.

Many of the energy needs …

Fertigation Techniques For Different Irrigation Methods, Charles M. Burt

BioResource and Agricultural Engineering

- The irrigation method influences whether or not chemicals must be injected at a constant rate.
- The irrigation method influences the optimum duration of chemical injection.
- Chemical injection rates may inadvertently vary during an irrigation set for many reasons: improper mixing, system flow rate fluctuations, and system pressure fluctuations
- Drip systems must account for the disposal of filter flush water.

A Feasibility Study On The Automation Of Domestic Airline Passenger Customer Service Check-In Procedures For Far Part 121 Carriers, Don Michael Trevor Bennett

Master's Theses - Daytona Beach

This study was conducted in an attempt to determine whether airlines can benefit from a fully automated customer service system which will be used by major, Part 121, operators for domestic travel purposes only. The proposed system will be designed to alleviate airport terminals check-in counter congestion and improve customer service personnel effectiveness and efficiency.

Domestic traffic is expected to increase by 50 percent by the year 2004. An Automatic Ticketing and Baggage (ATB) system will allow passengers to process all flight related transactions only once. A self checking-in system allows a passenger to obtain boarding passes and destination bag …

Fatigue Behavior Of The Equine Third Metacarpus: Mechanical Property Analysis, V.A. Gibson, S.M. Stover, R.B. Martin, J.C. Gibeling, N. H. Willits, M.B. Gustafson, L.V. Griffin

Biomedical Engineering

This is the first in a series of experiments to study the fatigue properties of equine cannon (third metacarpal) bone specimens from Throughbred racehorses. Monotonic and fatigue tests to failure were performed in four-point bending on diaphyseal specimens in a 37°C saline bath to answer three initial questions. (a) Will a linear variable differential transducer yield the same elastic modulus as strain gauges? (b) Will fatigue results depend on whether the periosteal or endosteal side of the beam is in tension? (c) Are there regional variations in the monotonic and fatigue properties of the cannon bone midshaft? Eighteen left-right pairs …

Removal Of Vocs From Air By Absorption And Stripping In Hollow Fiber Devices, Tarun K. Poddar

Dissertations

Large volumes of exhaust air streams contaminated with volatile organic compounds (VOCs) such as toluene, xylene, acetone etc. are discharged into the atmosphere by various industrial facilities. Common technologies for VOC emission abatement e.g., activated carbon adsorption, absorption in a liquid, incineration and catalytic oxidation, have many strengths as well as considerable limitations. In this study, a regenerative absorption-based removal of VOCs from N₂ in an inert, nonvolatile, organic liquid flowing in compact hollow fiber devices has been developed. The process eliminates flooding, loading and entrainment encountered in conventional absorption devices.

Contaminated air/N₂ stream was fed through the …

Computer-Aided Process Design For Waste Minimization, Konstadinos Abeliotis

Dissertations

Problems related to process design with environmental considerations have been studied in this dissertation. A new heuristic design methodology has been formulated with the objective of minimizing the adverse environmental impact of chemical processes.

This hierarchical methodology starts with the definition and analysis of a process flowsheet followed by quantification of the process environmental loads. The quantification of environmental loads is an essential aspect of this methodology, because it serves as the comparative measure for environmental performance.

If the calculated environmental loads do not satisfy the environmental constraints (e.g., regulatory limits), waste minimization is investigated in the following order:

• Pollution …

A Theoretical Analysis Of Volatile Contaminant Removal By The Pneumatic Fracturing Process, Yuan Ding

Dissertations

A mathematical model that simulates the process of contaminant removal from a pneumatically induced fracture within a porous medium is presented. It includes: (1) model development; (2) parameter evaluation; (3) statistical sensitivity analysis; and (4) model validation.

Based on the dual porosity approach, a mathematical model for a fractured porous formation is developed for both two dimensional and axial symmetrical cases. This model constitutes a pair of coupled partial differential equations for the porous medium and discrete fracture, respectively. The initial and boundary conditions have been determined based on field considerations of a soil vapor extraction system. By means of …

Particle Deposition On Surfaces In A Divergent Channal Flow, Ding Sun

Dissertations

Particle trajectory and deposition of two phase gas-solid flows in a convergent or divergent two-dimensional channel are investigated numerically in a wide range of parameters. For the fluid phase, a two dimensional, incompressible laminar fluid flow is considered in the analysis. The particle phase is a diluted suspension. The effects of inertia, gravity, viscous force and electrostatic image force are included in the computational model.

Both convergent and divergent channel flow are solved by the finite element method based on the software FIDAP. The flow separations will appear in a divergent channel and their separation positions are obtained in the …

The Effect Of Liquid Gallium On Plastics, Vivek P. Dwivedi

Theses

As part of a joint effort by Cornell University and NJIT to find a replacement for mercury as a pressuring medium for P-V-T devices, we investigated the effect of liquid gallium on four thermoplastics: two semi-crystalline ( high density polyethylene and polypropylene ) and two amorphous ( polystyrene and polymethylmethacrylate ). Test specimens were covered with liquid gallium and held in vacuum oven at temperatures close to their melting points for up to two weeks. Change in weight after treatment with gallium was measured, along with tensile testing and particle analysis using dispersion x-ray spectroscopy. The results are compared with …

Congestion Management Systems Development And Implementation : Four Case Studies, Arlene Rose-Marie Willis

Theses

To address concerns of poor air quality, congested highways and the need to manage and plan for transportation within budgetary constraints, the Intermodal Surface Transportation Efficiency Act of 1991 (ISTEA) mandated the development and implementation of a Congestion Management System (CMS). Primarily, a CMS will fuel transportation decision making with information on system performance and alternate strategies to alleviate congestion and enhance mobility. Efforts through ISTEA are expected to produce a more efficient American transportation system -- this thesis takes a look at the preparatory activities.

It is based on a federally funded project with metropolitan planning organizations (MPOs) in …

The Future Of Federal Funding, Harold Rogers, Steven O. Palmer

Kentucky's Annual Forum on Transportation

No abstract provided.

Kentucky Transportation Hall Of Fame [1995], Kentucky Transportation Center

Kentucky's Annual Forum on Transportation

No abstract provided.

Acuta Enews October 1995, Vol. 24, No. 10

ACUTA Newsletters

In This Issue

From the President

Disaster Recovery: Part ll

PBX Call Processing Basics

Cal State lnstalls Intelligent Payphones

From ACUTA Headquarters

Santa Clara Magazine, Volume 37 Number 4, Fall 1995, Santa Clara University

Santa Clara Magazine

8 - OF QUARKS, OBJECT IDENTIFICATION, AND PORPHYRIN MOLECULES SCU undergraduates get a taste of scientific research. By Miriam Schulman

14 - WHAT'S YOUR BOTTOM LINE? By investing in mutual funds that reflect their values, an increasing number of shareholders hope to put their money where their morals are. But can socially responsible investing really change the world? By Jeff Brazil ' 85

22 - A BIG ENOUGH UMBRELLA Tens of thousands of women from around the world gather for a unifying-albeit rainy- conference in China. Photographs By Kim Johnson ' 87

26 - THE ART OF MATHEMATICS For every …

Civilizing The Civil Engineer: How A History Course Can Serve As A Curriculum Capstone, John Alfred Heitmann

History Faculty Publications

Beginning in 1989 and then every other year thereafter, a unique course dealing specifically with the history of civil engineering has been taught to all civil engineering majors at the University of Dayton. What has evolved over time -- in response to student feedback, ongoing reform in the curriculum, and a maturing of faculty expertise -- is a course in the history of civilization that has as its major focus the discipline of civil engineering.

In reality, what happens in the classroom is a far broader learning experience than either the disciplines of history or civil engineering could provide standing …

Bulletin - October, 1995, Civil Aviation Medical Association

Browse all Civil Aviation Medical Association Newsletters

A sixteen page newsletter of the Civil Aviation Medical Association. The newsletter provided news about civil aviation medicine and information related to the organization.

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 11, Number 8, October 1995, 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.

An Investigation Into The Use Of Expanded Polystyrene Patterns With The Loose-Sand, Vacuum Assisted Counter Gravitational Casting Process, John B. Vandersall

Graduate Research Papers

"Considered for years as a metal casting renegade, Expendable Pattern Casting (EPC) is believed by some to be tomorrows long-term casting future. Others, however, see it as an unproven headache-ridden process that makes the simple art of metal casting unnecessarily complex." (Lessiter, 1994, p. 36). The complexity of this process has been largely due to the lack of knowledge surrounding the interaction of the metal front and the dissipating polystyrene pattern.

Since the discovery of EPS as a pattern material, numerous applied research projects have been performed to gain a better understanding of the thermal breakdown characteristics of the material. …

Text Independent Speaker Verification Using Binary-Pair Partitioned Neural Networks, Claude A. Norton Iii

Electrical & Computer Engineering Theses & Dissertations

A method is presented for the application of binary-pair partitioned neural networks to the task of speaker verification. This technique is based on a previously developed neural network classifier for speaker identification.

The main focus of this research was the development and testing of the algorithms necessary to extend the binary-pair partitioning approach from speaker identification to speaker verification. The method is based on the development of a user profile which is obtained from discriminative data provided by the binary-pair partitioned neural networks.

Experimental results are provided which demonstrate the viability of this approach, using the TIMIT speech corpus for …

Acuta Enews September 1995, Vol. 24, No. 9

ACUTA Newsletters

In This Issue

Awards presented at 24th Annual Conference

New Board of Directors looks forward to 1996

Board Report

Welcome New Members

Host needed for Winter Seminar

President's Message

Driving smart on the Info Highway

Job Satisfaction And Dissatisfaction Factors Of Airport Security Screeners: National Survey Results, Francis X. Goeddeke Jr.

Master's Theses - Daytona Beach

The purpose of this study is to accurately and reliably determine what factors are most important to airport security screeners that effect job satisfaction and excessive employee turnover. Using survey items generating in a previous study, job satisfaction and job dissatisfaction survey scales for this population were developed and validated. A modified version of the Rensis Likert Scale of Organizational Climate was also developed. These surveys, including a demographic questionnaire, were administered to a large nationwide sample of airport security screeners. The results were analyzed using chi-square contingency tables, one-way analysis of variance tests, and the Fisher post-hoc procedure. Post-hoc …

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 11, Number 7, September 1995, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

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

In Vitro Activity Of Levofloxacin, Singly And In Combination With Rifamycin Analogs, Against Mycobacterium Leprae, Arvind Madhav Dhople, Maria Antonia Ibáñez

Biomedical Engineering and Sciences Faculty Publications

The in vitro susceptibility of Mycobacterium leprae to levofloxacin was studied by using two biochemical parameters to measure the metabolic activity of the organism. Levofloxacin consistently exhibited twofold greater bactericidal activity than ofloxacin, with the MIC being 0.75 μg/ml. When combined with one of the three rifamycin analogs, synergism was obtained with KRM-1648 and rifabutin but not with rifampin.

Aggregating Organizational Performance Metrics Using The Analytic Hierarchy Process, Bret L. Indermill

Theses and Dissertations

Measurement provides factual information which is necessary for effective control of business processes. Implementing a Total Quality Management (TQM) philosophy is a common process in many organizations today. The United States Air Force is using the Malcolm Baldrige National Quality Award criteria to measure organizational performance in implementing the Quality Air Force (QAF) initiative. Unfortunately, the Baldrige-based unit self-assessment (USA) process is an inconsistent measure due to its subjectivity, and is also time consuming to use. This study determined that a new USA method based on the analytic hierarchy process (AHP) was not a significant improvement over the existing QAF-USA …

Assisting Defense Conversion Technology Transfer Efforts. A Case Study Of Ohio's Miami Valley, Marissa C. Salvador

Theses and Dissertations

Major changes in the geopolitical environment and the social and economic needs of the United States have resulted in resources being shifted away from national defense. Although the expected decrease in defense spending should not be harmful in macroeconomic terms, it can be devastating locally. To mitigate the effects of the drawdown, individual states and local communities must search for ways to bolster their local economies. One avenue that can be pursued to enhance future economic growth is the transferring of technologies to the commercial sector. Intermediary organizations have emerged to facilitate the process of technology transfer by serving as …

An Evaluation Of Cost Metrics Used Within Aeronautical Systems Center, Kevin M. Byrne

Theses and Dissertations

Aeronautical Systems Center (ASC) system program offices rely on cost metrics to acquire information on program effectiveness and organizational improvement. This study was an attempt to determine the effectiveness of ASC’s cost metrics. The effectiveness of the metrics were determined by the desirability of the behaviors which are exhibited when individuals utilize the specific metrics. Using an expert panel to evaluate the metrics, data was collected using the Group Research Laboratory for Logistics located in Armstrong Laboratory at Wright Patterson AFB, OH. Metric diagnostic charts were utilized to arrange the data into a format which would provide effectiveness information. The …