Digital Commons Network^™

Automated Identification Of The Operational Modes Of Switched Electric Circuits, J. Jatskevich, O. Wasynczuk, E. A. Walters, C. E. Lucas, Steven Pekarek, P. T. Lamm

Electrical and Computer Engineering Faculty Research & Creative Works

In the analysis of power-electronic-based energy conversion systems, it is important to identify the operational modes of the associated converters and inverters. However, as the number of switching elements increases, it becomes more difficult to analytically establish all possible modes of operation. In this paper, a modelling technique is described wherein a state-space representation of the overall system is generated automatically and updated dynamically as each new topology is encountered. Utilizing this approach, it becomes possible to identify the operational modes of converters and inverters based upon the cyclically repeated sequences of topologies that can be observed during steady-state operation. …

Editorial, Ahmed Noor, Victor Birman

Mechanical and Aerospace Engineering Faculty Research & Creative Works

No abstract provided.

Development Of A Functional Basis For Design, Robert B. Stone, Kristin L. Wood

Mechanical and Aerospace Engineering Faculty Research & Creative Works

Functional models represent a form independent blueprint of a product. As with any blueprint or schematic, a consistent language or coding system is required to ensure others can read it. This paper introduces such a design language, called a functional basis, where product function is characterized in a verb-object (function-flow) format. The set of functions and flows is intended to comprehensively describe the mechanical design space. Clear definitions are provided for each function and flow. The functional basis is compared to previous functional representations and is shown to subsume these attempts as well as offer a more consistent classification scheme. …

Family Structure And Children's Academic Achievement : The Role Of Income And Parental Control, Jean M. Hoth

Dissertations and Theses @ UNI

The purpose of this quantitative study is to examine the relationship between family structure and children's academic achievement, and to assess the roles of income and parental control in this relationship. The present study involves secondary analysis of data from the National Survey of Families and Households (Sweet & Bumpass, 1996) The National Survey of Families and Households (NSFH) is a national random sample survey conducted in two waves that covers a wide variety of issues on American family life. This study examines data gathered from the second wave of this data set. The total sample for the present research …

The Training Environment Of The Irish Defence Forces:Integrated Training, Bullying And Sexual Harassment, Tom Clonan

Books/Book chapters

The training environment of the Irish Defence Forces: integrated training and bullying in the workplace In this chapter I will refer to recruit and cadet training within the defence forces in light of international trends in integrated training. Following the consideration of ‘commitment’ in terms of numbers of women recruited to the organisation in chapter five, this chapter assesses the “education” component of the setting (Reskin and Padavic, 1994). Through an examination of archival data (syllabi of training, training policy etc) and the data obtained at interview, an assessment of the PDF’s equality of opportunity agenda as it applies to …

Challenges In Delivering Library Services For Distance Learning, Cynthia Wright Swaine

Libraries Faculty & Staff Publications

The first section of this paper on library services for distance education discusses the status of distance learning in higher education. What distance learning means for libraries is addressed in the second section, including considerations related to diverse locations, agreements with participating institutions, delivery limitations, librarian commitment, and awareness of new ways to deliver services. The third section summarizes requirements for libraries and provides World Wide Web addresses for American Library Association and Canadian Library Association guidelines. The fourth section describes the challenges and impact of distance learning on library service units related to administration, collection management, acquisitions, cataloging, collection …

The Victimization Of Juvenile Prostitutes In Ethiopia, Kevin Lalor

Articles

This paper quantifies the victimisation experienced by 30 juvenile prostitutes in Addis Ababa, Ethiopia. Seventy three per cent had been raped at least once and ninety three per cent had been beaten in the course of their work. Only 50% used contraception, resulting in a pregnancy rate of 37%. Findings indicate that prostitution is a highly victimogenic lifestyle, fostered by conditions of extreme deprivation. Policy and practice implications are discussed.

Title Page

Constructing the Past

No abstract provided.

Judith Sargent Murray: The "So-Called" Feminist, Sara Scobell

Constructing the Past

This article discusses the writings of Judith Murray, and critiques the notion that she was an early feminist and supporter of women's right to move outside of the domestic sphere.

Working Memory And Human Reasoning : An Individual Differences Approach, Alison Jayne Capon

School of Psychology Theses

Experiments 1-3 investigated the relationship between working memory and syllogistic and five-ten-n series spatial inference. A secondary aim was to replicate the findings of Shah and Miyake (1996) who suggested the use of separate central resources of working memory for spatial and verbal ability. The correlational analysis showed that the complex verbal and spatial working memory span tasks were associated together and consistently predicted reasoning performance in both verbal and visual modalities. The confirmatory factor analysis showed that three factors best accounted for the data -a verbal, a spatial, and a general resource. All the span tasks and most of …

Tgf-Beta And Ifn-Gamma Direct Macrophage Activation By Tnf-Alpha To Osteoclastic Or Cytocidal Phenotype., Sw Fox, K Fuller, Ke Bayley, Tj Chambers

School of Biomedical Sciences

No abstract provided.

Adaptive Information Filtering: Evolutionary Computation And N-Gram Representation, Daniel R. Tauritz, Ida G. Sprinkhuizen-Kuyper

Computer Science Faculty Research & Creative Works

Adaptive Information Filtering (AIF) is concerned with filtering information streams in changing environments. The changes may occur both on the transmission side (the nature of the streams can change) and on the reception side (the interests of a user can change). The research described in this paper details the progress made in a prototype AIF system based on weighted n-gram analysis and evolutionary computation. A major advance is the design and implementation of an n-gram class library allowing experimentation with different values of n instead of solely with 3-grams as in the past. The new prototype system was tested on …

Reducing Cognitive Overheads In A Web Warehouse Using Reverse-Osmosis, Sanjay Kumar Madria, Wee Keong Ng, Ee-Peng Lim, Sourav S. Bhowmick

Computer Science Faculty Research & Creative Works

This paper provides a quantitative analysis of reducing cognitive overheads in a Web warehouse using an important class of operation called reverse osmosis. The analysis is used to examine two different cognitive overheads of locating relevant nodes or information and display time of a Web table. A reverse-osmosis operation enables us to eliminate in relevant information from a collection of Web documents stored in the form of a Web table. We call such an operation reverse-osmosis because it is analogous to the reverse osmosis process in the field of water purification. We discuss a formal algorithm of the reverse-osmosis operation

Ethics Exercises For Civil, Environmental, And Geological Engineers, Paul Michael Santi

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

The practices of civil, environmental, and geological engineering share many common ethical dilemmas. These fields typically require extensive interaction with clients and regulatory agencies, while dealing with unpredictable earth materials for design and uncertain design parameters. Consequently, a capstone design course must address not only technical issues, but also a wide range of ethical and behavioral issues. This study presents a series of exercises used in the classroom to teach these issues through dealing with "gray" ethical areas, concepts of advocacy and the use of compromise, relating specific stories to global concepts, proper behavior in the corporate environment, and the …

Border Detection On Digitized Skin Tumor Images, Z. Zhang, William V. Stoecker, Randy Hays Moss

Chemistry Faculty Research & Creative Works

A radial search technique is presented for detecting skin tumor borders in clinical dermatology images. First, it includes two rounds of radial search based on the same tumor center. The first-round search is independent, and the second-round search is knowledge-based tracking. Then a rescan with a new center is used to solve the blind-spot problem. The algorithm is tested on model images with excellent performance, and on 300 real clinical images with a satisfactory result

Enantiomeric High-Performance Liquid Chromatographic Separation Of Β- Substituted Tryptophan Analogues, G. Török, A. Péter, E. Vékes, J. Sápi, M. Laronze, J. Y. Laronze, Daniel W. Armstrong

Chemistry Faculty Research & Creative Works

The high-performance liquid chromatographic enantioresolution of β- substituted tryptophan analogues by direct and indirect methods is reported. The direct separation was carried out on chiral crown ether-bonded, on the macrocyclic antibiotic teicoplanin-bonded or on different derivatized β- cyclodextrin-bonded phases. The indirect resolution was achieved by applying pre-column derivatization with the chiral reagents 1-fluoro-2,4- dinitrophenyl-5-L-alanine amide (FDAA) and 2,3,4,6-tetra-O-acetyl-β-D- glucopyranosyl isothiocyanate (GITC). In the separation of all four isomers of the analytes, the indirect methods seemed to be more efficient than the direct methods. In most cases, the FDAA derivatives of the stereoisomers could be separated with better selectivity in methanol-containing …

Adaptive Critic Based Neurocontroller For Turbogenerators With Global Dual Heuristic Programming, Ganesh K. Venayagamoorthy, Donald C. Wunsch, Ronald G. Harley

Electrical and Computer Engineering Faculty Research & Creative Works

Turbogenerators are nonlinear time varying systems. This paper presents the design of a neurocontroller for such a turbogenerator that augments/replaces the traditional automatic voltage regulator (AVR) and the turbine governor using a novel technique based on the adaptive critic designs (ACDs) with emphasis on global dual heuristic programming (GDHP). Simulation results are presented to show that the neurocontroller derived with the GDHP approach is robust and its performance is better when compared with that derived with other neural network technique, especially when system conditions and configuration changes.

Analysis Of A Novel Four-Level Dc/Dc Boost Converter, Keith Corzine, Sonal K. Majeethia

Electrical and Computer Engineering Faculty Research & Creative Works

In this paper, novel two-quadrant buck/boost and one-quadrant boost four-level DC/DC power converters are introduced. The primary application for these converters is that of interfacing a low-voltage DC source, such as a fuel cell or battery, to a high-voltage four-level inverter. One important feature of the four-level DC/DC power converters proposed is the ability to perform the power conversion and balance the inverter capacitor voltages simultaneously. With the capacitor voltage balancing, it is possible to obtain the full voltage from the inverter. For the boost converter, the steady-state and nonlinear average-value (NLAM) models are developed. The NLAM is verified against …

Claiming The Victim: Tokenism, Mourning, And The Future Of German Holocaust Poetry, Kathrin M. Bower

Languages, Literatures, and Cultures Faculty Publications

This excerpt from Nelly Sachs's poem "You Onlookers" could be read as support for the contention, reportedly made by Adolf Hitler during a table talk, that "The Jews invented conscience." This statement, although fascinating in itself for what it implies about Hitler's psyche and moral sense, becomes even more provocative if read in association with Marina Zwetajewa's puzzling proclamation, made famous by its appearance as an epigram to a poem by Paul Celan, that "all poets are Jews." The connection of Jews to both conscience and poetry has significant repercussions for the genre of so-called Holocaust lyric, so-called because it …

Principal Succession: Realities Encountered By Successor Principals During The Succession Process, Kenneth Lester Rigdon

Dissertations and Theses @ UNI

In order to better understand the realities of principal succession (an interactive sequencing process for changing school administrators) it was the purpose of this study to examine the relationship between four organizational frames (structural, human resource, political, and symbolic) delineated by Bolman and Deal (1997) and three traits noted in the literature as evident during school principal succession (predecessor leave-taking, succession source, and experience). There is little research regarding school principal succession, and concern exists regarding the adequacy of transition practices within organizations. A questionnaire was employed to survey all school principals in the state of Kansas who succeeded during …

An Analysis Of Manufacturing Facility Characteristics And Four-Year Manufacturing Engineering Technology Competencies For Abet Accredited Programs In North Carolina, Richard Eugene Temple

Dissertations and Theses @ UNI

The purpose of this study was to determine the degree of correlation between four-year ABET/MET competencies and company demographics of plant location and plant size and usage of manufacturing technologies, and to determine the overall rating per SIC classification of validated MET competencies. This purpose is reflective of the literature, which indicated that there is a need for further development of manufacturing engineering technology competencies to meet the industry needs of a region or state.

A questionnaire was used to collect data. It was mailed to 440 randomly selected practicing manufacturing engineers in North Carolina. The sample size was 50. …

Evaluation Of The Effectiveness Of A Sexual Assault Curriculum At The University Of Northern Iowa, Faith Hope Sonksen

Dissertations and Theses @ UNI

The purpose of this study was to assess university students' attitudes toward rape and rape mythology and to measure any impact on these attitudes following exposure to a rape/sexual assault awareness curriculum unit. It was hypothesized that students attending the rape/sexual assault unit would demonstrate a statistically significant difference in their rape/sexual assault awareness attitudes and beliefs after taking a sexual assault program, and there would be a statistically significant difference according to gender.

The study sample consisted of 46 (28 male, 18 female) physical education major students enrolled in sections of 420:016, Self-Defense Class at UNI. The mean age …

The Freshman Connection: Implementing And Assessing A Plan To Increase Student Success, Pamela Downing-Hosten

Abraham S. Fischler College of Education ETD Archive

The purpose of this practicum was to develop, implement, and assess a plan for reducing the number of freshmen at the high school who failed the grade, with failure being defined as the inability to earn 4 credits within 1 year. From the 1993-1994 school year until the 1997-1998 school year, an average of 17.7% of the 9th-grade class had to repeat the grade. Through the year-long implementation of the plan called the Freshman Connection program, the researcher hoped that the failure rate of 21.9% in 1998 would be reduced to 10.0% in 1999.

The Freshman Connection program entailed (a) …

Civilian Conservation Corps Rubble And Masonry Dams And Gully Morphology In Northeastern Iowa, Timothy Robert Beerman

Dissertations and Theses @ UNI

The Civilian Conservation Corps (CCC) was created in 1933 in an effort to help solve the problems associated with the lack of jobs for young men, the nations dwindling natural resources, and problems associated with soil erosion. The CCC's work in Iowa was primarily in the areas of reforestation and erosion control. Company 1749 of Cresco, Iowa stands out as an example of how the CCC worked to halt erosion. As a part of their erosion-control strategy, Company 1749 built a large number of rubble and masonry dams on gullies. These dams were designed to trap sediments and prevent further …

Mcnair Scholars Journal

Georgia Southern University McNair Scholars Journal (Archived)

• Director's Message
• Relationship Between a Precipitate Found in Ethanol Preserved Crustaceans and The Molt Cycle Lacrissa Cook
• Main Influences of Perceived Gender Differences in Middle and High School Students: Unveiling the Curtain of Silence Ebonique Thomas
• The Sagittal Suture in Homo Sapiens: Is It Fractal? Ron Wright
• The Black Elite in Atlanta, Georgia: Perpetuating and Idealistic Society Phyllis M. Hill
• The Quarterman Incident: The Albany Movement Pushed Back to Strength Kameelah L. Martin
• The Effects of Various Materials for the Purpose of Sound Reduction Christopher Johnson
• Maintaining Doctrinal Integrity and Continuity in The Absence of Organizational Structure Among Primitive Baptists …

A Survey Of Iowa High School Band Directors And Their Students On The Occurrences Of Performing On A Musical Instrument While Experiencing Pain, Crystal M. Franzen Halverson

Dissertations and Theses @ UNI

Learning to play a musical instrument is a challenging and exciting venture for many children. Lessons are the primary means for children to learn to play a musical instrument. Some begin studying an instrument through private lessons and others through a Suzuki program. Many other children begin their study of a musical instrument in the public school system with a music teacher in elementary, junior high, or middle school. Regardless of how one begins to learn to play a musical instrument, by the time high school is reached, it is conceivable that he or she will have had at least …

Part 8: The State Of Transportation, Regional Studies Institute, Old Dominion University

State of the Region Reports: Hampton Roads

(First Paragraph) What road do we take- literally and figuratively- to help solve our traffic congestion woes?

Review Of The Digital Library: Challenges And Solutions For The New Millennium; Proceedings Of An International Conference Held In Bologna, Italy, June 1999, Ann Hamilton

University Libraries: Faculty Publications

Work published by College & Research Libraries.

Images Of Justice, Lela P. Love

Articles

No abstract provided.

Review Of Interpreting And Negotiating Licensing Agreements By Arlene Bielefield And Lawrence Cheeseman, W. Bede Mitchell

University Libraries: Faculty Publications

This review was published in College and Research Libraries.