Digital Commons Network^™

Effects Of Foreign Object Damage From Small Hard Particles On The High-Cycle Fatigue Life Of Ti-6a1-4v, Joseph L. Hamrick Ii

Theses and Dissertations

Thin rectangular samples of Ti-6Al-4V were damaged by four methods to represent foreign object damage found in turbine engine blades: 1) impact with 2 mm and 5 mm diameter glass spheres at 305 m/s, 2) impact with 2 mm and 4 mm diameter steel spheres at 305 m/s, 3) quasi-static displacement controlled indentation using steel chisels with 1 mm, 2 mm and 5 mm diameter tips and 4) shearing notches with a 2 mm diameter chisel point under a quasi-static loading condition. Finite element analysis was used to study the relationship between the stress state created by the plastic damage …

Impact Of Actual Facilitator Alignment, Co-Location, And Video Intervention On The Efficacy Of Distributed Group Support Systems, Brian J. Heberlie, Mary O. Tolbert

Theses and Dissertations

The growth of distributed group support systems (GSS) suggests that organizations will continue to bring dispersed groups of people together to make decisions over computer networks. In many instances those groups are temporarily assembled to address a task and then summarily disbanded never to work together again. In order for users to effectively use the GSS issues of trust and control need to be addressed within the GSS design. Users have perceptions about the fairness of structural and social determinants of the GSS design. These perceptions influence both the decision making process and process outcomes. This article shows the negative …

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 …

Why Didn’T You Tell Me?: Toward Building A Model Of Why Information Is Not Shared Well In Organizations, Robert C. Kitchen

Theses and Dissertations

The effective use of information in an organization is vital to its success. One of the biggest investments being made today by companies is in their information infrastructures. However, with all of the resources being dedicated to improving information flows, evidence shows that organizations still do not share information as widely as they could or should be. Many studies have been conducted to learn the reasons why people in organizations do not share information as well as would be good. However, no study was found that reported the relative frequency of reported reasons for not sharing information. This paper gathers …

Approximation And Optimization Of An Auditory Model For Realization In Vlsi Hardware, Samuel L. Sangregory

Theses and Dissertations

The Auditory Image Model (AIM) is a software tool set developed to functionally model the role of the ear in the human hearing process. AIM includes detailed filter equations for the major functional portions of the ear. Currently, AIM is run on a workstation and requires 10 to 100 times real-time to process audio information and produce an auditory image. An all-digital approximation of the AIM which is suitable for implementation in very large scale integrated circuits is presented. This document details the mathematical models of AIM and the approximations and optimizations used to simplify the filtering and signal processing …

Electrical And Optical Characterization Of Intrinsic And Ion-Implantation Induced Defects In 6h- And 4h-Sic, Michael B. Scott

Theses and Dissertations

Deep level transient spectroscopy (DLTS), Hall effect, and cathodolummescence (CL) measurements are used to characterize the intrinsic and ion-implantation induced defects in high-temperature (475 and 500 °C) ion-implanted epitaxial n-type 6H- and 4H-SiC, ion-implanted with Cr, Mg, Ar, N, and P atoms. Comparison of room-temperature and high-temperature ion-implanted 6H-SiC:Mg and :Cr indicate the significance of high-temperature ion implantation on the activation of the ion-implanted atoms and damage-recovery of the crystalline lattice. The effects of high-temperature annealing on both damage-recovery and implanted ion activation are detected and analyzed, from 1200 to 1800 °C. Trap parameters of both damage-related and species-related defects …

An Assessment Of Mentoring Functions And Barriers To Mentoring, Kristopher A. Singer

Theses and Dissertations

A study of 91 Coast Guard junior officers and their mentors established the construct validity for mentoring functions and barriers to mentoring. The Air Force relies on supervisors to provide mentoring to their subordinates. The key predictors of whether junior officers report their supervisors as mentors were similarity between mentor and mentee and the quality of the supervisory relationship in terms of LMX and psychosocial and career development mentoring functions. The results demonstrated evidence for a compensatory theory of mentoring. Multiple mentors do not have a synergistic effect on mentoring relationships. The key predictors of reporting an additional mentor (other …

Reverse Engineering Of Foreign Missiles Via Genetic Algorithm, Jon D. Wollam

Theses and Dissertations

One mission of the National Air Intelligence Center (NAIC) is the reverse engineering of foreign missile weapon systems from incomplete observational data. In the past, intuition and repeated runs of a missile performance model were required to converge to a solution compatible with observed flight characteristics. This approach can be cumbersome and time consuming, as well as being subject to undesirable influences from the analyst's preconceptions and biases. An alternative approach has been created to apply genetic algorithm (GA) techniques to allow automation of the process, wider exploration of the design space, and more optimal solutions matching the observational data. …

Boundary Control For Automated Sweeping Of Finite Element Meshes, Robert A. Kerr

Theses and Dissertations

Finite element analysis depends greatly upon a high-quality mesh to be able to provide reasonably accurate answers to engineering problems. Models that need to be analyzed using finite element analysis are becoming increasingly more complex, and correspondingly harder to mesh with good quality. Skew is one quality metric which can cause problems with finite element analyses. This thesis explains how skew is calculated, discusses two common sources of skew: multiply-linked surfaces with interval constraints, and biased edge meshes. Two methods of lessening skew in surface meshes are then presented: the skew control algorithm, and the curve morphing algorithm. These algorithms …

Théophile Gautier And The Orient, F. Elizabeth Dahab

CLCWeb: Comparative Literature and Culture

In her article, "Théophile Gautier and the Orient," F. Elizabeth Dahab discusses the function of the Orient in general, and in particular, the function of Ancient Egypt in some of Gautier's contes fantastiques written between 1835 and 1857. Gautier and many of his contemporaries including Baudelaire wanted to escape from a society dominated by the idea of progress. They expressed deep doubt in many of their texts and strived to find solace in the notion of permanence in art characteristic of Ancient Egyptian architecture and mortuary customs. They also believed that Ancient Egypt may provide an answer to humanity's quest …

Clash Of The Titans: Regulating The Competition Between Established And Emerging Electronic Payment Systems, Jane Kaufman Winn

Articles

This article equates the providers of traditional electronic payment services with the Titans of Greek mythology, and the providers of new electronic payment technologies with the Olympians. Professor Winn concludes, however, that unlike the Titans of Greek mythology, these modern Titans appear to be winning in their battle with the upstart Olympians. This article describes the fundamental characteristics of payment systems, reviews the applicable law, and describes the new technologies that were, until quite recently, expected to displace older electronic payment systems. Professor Winn finds that consumers and merchants, by and large, are happy with the existing regulatory structure. And, …

Introduction: The Body, Economic Power And Social Control: Introduction, Dorothy Nelkin, Lori B. Andrews

Chicago-Kent Law Review

No abstract provided.

Melanoma Chondroitin Sulphate Proteoglycan Regulates Cell Spreading Through Cdc42, Ack-1 And P130Cas, Kathryn M. Eisenmann, James B. Mccarthy, Melanie A. Simpson, Patricia J. Keely, Jun-Lin Guan, Kouichi Tachibana, Louis Lim, Ed Manser, Leo T. Furcht, Joji Iida

Department of Biochemistry: Faculty Publications

Melanoma chondroitin sulphate proteoglycan (MCSP) is a cell-surface antigen that has been implicated in the growth and invasion of melanoma tumors. Although this antigen is expressed early in melanoma progression, its biological function is unknown. MCSP can stimulate the integrin-α4β1-mediated adhesion and spreading of melanoma cells. Here we show that stimulated MCSP recruits tyrosine- phosphorylated p130cas, an adaptor protein important in tumor cell motility and invasion. MCSP stimulation also results in a pronounced activation and recruitment of the Rho-family GTPase Cdc42. MCSP-induced spreading of melanoma cells is dependent upon active Cdc42, a Cdc42-associated tyrosine kinase (Ack-1) and tyrosine phosphorylation of …

The Daily Egyptian, December 01, 1999, Daily Egyptian Staff

December 1999

No abstract provided.

December 1, 1999 Faculty Senate Minutes, University Of South Carolina

Faculty Senate

No abstract provided.

Strategy And Circumstance: The Response Of American Firms To Japanese Competition In Semiconductors, 1980-1995, Richard N. Langlois, W. Edward Steinmueller

Economics Working Papers

The transistor was an American invention, and American firms led the world in semiconductor production and innovation for the first three decades of that industry's existence. In the 1980s, however, Japanese producers began to challenge American dominance. Shrill cries arose from the literature of public policy, warning that the American semiconductor industry would soon share the fate of the lamented American consumer electronics business. Few dissented from the implications: the only hope for salvation would be to adopt Japanese-style public policies and imitate the kinds of capabilities Japanese firms possessed. But the predicted extinction never occurred. Instead, American firms surged …

Technological Standards, Innovation, And Essential Facilities: Toward A Schumpeterian Post-Chicago Approach, Richard N. Langlois

Economics Working Papers

In this essay, I attempt to take seriously Schumpeter's perspective on competition as fundamentally about innovation. Drawing on literatures that concern themselves centrally with the patterns and processes of technological change, I focus on a set of issues very much on the present-day agenda: antitrust policy toward network industries in which technological standards are important. As both scholars and legal cases have suggested, one might logically view a set of standards as an "essential facility" - a technological bottleneck - for those who wish to connect to the network.. I attempt to define the limits of the standard price-theoretic account …

The Dayton Its Demonstration Project: Simulating Existing Conditions, Jill A. Swaynos, Nikiforos Stamatiadis

Kentucky Transportation Center Research Report

The Miami Valley Regional Planning Commission is incorporating an Advanced Traveler Information System to alleviate real-time traffic problems associated with special events at the Ervin J. Nutter Center of the Wright State University. This study of the existing conditions is part of the evaluation plan and addresses two tasks: 1) documentation of the existing conditions; and 2) definition of measures of effectiveness. The existing conditions were depicted with the use of a computer simulation software package, Traffic Software Integrated System and separate scenarios were modeled for three existing conditions: ingress and egress for a special event and a major shopping …

A Primer For The First-Time Law Dean Candidate, Robert H. Jerry Ii

Faculty Publications

This article identifies fourteen principles of which the first-time dean candidate should be mindful. The prescriptions are aspirational in nature, and the article suggests the reader engage in some introspection about which of the fourteen items are most applicable on a personal level.

Design Research: The Newsletter Of The Design Research Society No.67, Stephen Little

Design Research Newsletters (1966-1999)

No abstract provided.

Wright State University Libraries Access Newsletter December 1999, Wright State University Libraries

Access Newsletter

A four page newsletter created by Wright State University Libraries that addresses the current affairs of the Libraries.

Faculty Senate Monthly Packet December 1999, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The December 1999 Monthly packet includes the December agenda and appendices and the Faculty Senate minutes and attachments from the meeting held November 1999.

Effect Of Calendering On Flexographic Print Ability Of Linerboard, William P. Woods

Masters Theses

Today's corrugated board end user demands a higher quality than ever. Retailing techniques are moving toward so-called ''value-added packaging," which consists of high quality printed packaging that works to sell the product from the shelf. To preserve'its dominance in the corrugated market, the flexographic printing industry must find new ways to cost effectively satisfy the new demands.

One possibility is the use of an additional calendering step to give the linerboard better printability. This study evaluated two different types of calenders: the shoe (extended nip) calender and the hot/soft nip calender (Appendix A). The test material was commercially produced linerboard, …

Comparison Of One-Dimensional And Two-Dimensional Hydrodynamic Modeling Approaches For Red River Basin, Sajjad Ahmad, Slobodan P. Simonovic

Civil and Environmental Engineering and Construction Faculty Research

EXECUTIVE SUMMARY

A devastating flood in Red River valley in 1997 emphasized the need to study the flood control measures in the Red River basin using state of the art modeling tools. The Red River and its floodplains can be modeled using one-dimensional, quasi two-dimensional or fully two-dimensional hydrodynamic models. Each modeling approach has its own advantages and limitations. The main purpose of this report is a comparison between one-dimensional (or quasi two dimensional) and fully two-dimensional hydrodynamic modeling approaches for modeling floods in the Red River basin.

A two-dimensional hydrodynamic model, MIKE 21, coupled with Geographic Information System (GIS) …

An Analysis Of The Production Flow At Tmi Systems Design Corporation, Loren J. Zavalney

Theses and Dissertations

The purpose of this study was to perform a detailed analysis of the production process flow at TMI Systems Design Corporation that will help improve the overall efficiency of the manufacturing process. The study was sectioned into three phases. Phase one of this study was to collect data on the manufacturing process. Phase two of this study was to incorporate the manufacturing process data into flow process charts and flow diagrams. Phase three of this study was to create an operations process flow chart for the model W2052 wall cabinet.

Phase one was accomplished by collecting data while observing the …

Class Ethos And The Politics Of Inquiry: What The Barroom Can Teach Us About The Classroom, Julie Lindquist

Faculty Publications

No abstract provided.

Values-Based Strategies And Planning For Global Organisations, David Kimber

IIMB Management Review

As social, environmental and economic conditions change over the world, global managers must adopt new strategic planning techniques. Historically two contrasting motivations for global activity can be identified. The first, based on a need to enhance security, has led to aggression and conflict. The other is based on an interest in enhancing peoples' lives and an urge to share this understanding. David Kimber suggests that understanding the second perspective, helps managers maintain a stable and long term orientation to global development. Outlining a framework for considering values, he reviews a values focus to clarify first, how it relates to the …

Unofficial Grapevine, December 1999, University Of South Florida St. Petersburg.

Unofficial Grapevine

The December 1999 issue of the Unofficial Grapevine. Improperly labeled as Vol. 6, No. 11. This issue should be Vol. 6, No. 12.

Cable Internet Unbundling: Local Leadership In The Deployment High Speed Access, Marcus Maher

Federal Communications Law Journal

With the pending merger of TCI and AT&T and their promise of "one-stop" television, Internet, and telephone service, the cable Internet issues move to the forefront. The desire of traditional Internet Service Providers to gain access to new high-speed technologies for Internet access led to requests for unbundling or open access to cable systems. Despite the heated debate on the need for unbundling that has occurred at the federal level, local authorities have taken the lead in requiring open access to cable for competing ISPs. General anticompetitive concerns with cable Internet dominated by the cable company could be alleviated in …

Artimis Telephone Travel Information Service: Overall Public Awareness, Lisa Aultman-Hall

Kentucky Transportation Center Research Report

This report summarizes the results of a random telephone survey of households in the Greater Cincinnati and Northern Kentucky Area. The objective was to determine awareness of the traffic management center and its telephone travel information service. A secondary objective was to determine the public's preference for dialing and recalling phone numbers for travel information. The survey found that 39% were aware of a traffic management center while 55% were aware of a telephone traffic information service. Awareness varied by work location, household characteristics and personal attributes. Some households that could potentially benefit from the service were unaware of its …