Digital Commons Network^™

Film Growth Of Novel Frequency Agile Complex-Oxide Piezoelectric Material, Bindu Sreeramakavacham

Electronic Theses and Dissertations

Piezoelectric materials are well known for their applications in surface (SAW) and bulk acoustic wave (BAW) devices such as oscillators, resonators and sensors. Quartz has been the main material used in such applications. Ternary calcium gallium germanate (CGG) structure-type materials, so-called langasites, recently emerged as very promising because of their piezoelectric properties superior to quartz. This thesis discusses the growth of langasite-type La3Ga5.5Ta0.5O14 (LGT) films by liquid phase epitaxy (LPE) technique and their chemical and structural characterization. In addition, the different techniques suitable for the growth of LGT are discussed and compared. To adjust the materials properties for given applications, …

Investigation Of Pn Junction Delineation Resolution Using Electron Beam Induced Current, Christopher Hayden Hontgas

Electronic Theses and Dissertations

This dissertation will investigate electron beam induced current (EBIC) for determining semiconductor material and device parameters. While previous experimental work on PN junction delineation using EBIC with the scanning electron microscope has resulted in resolution to approximately 10 nm, theoretical study shows the potential use of EBIC for higher resolution (nanometer) PN junction and FET channel length delineation using the transmission electron microscope. Theoretical arguments using computer simulations of electron beam generation volume, collection probability and EBIC were performed and are presented for the purpose of determining EBIC use in a 300 keV transmission electron microscope (TEM) for PN junction …

Mac Layer And Routing Protocols For Wireless Ad Hoc Networks With Asymmetric Links And Performance Evaluation Studies, Guoqiang Wang

Electronic Theses and Dissertations

In a heterogeneous mobile ad hoc network (MANET), assorted devices with different computation and communication capabilities co-exist. In this thesis, we consider the case when the nodes of a MANET have various degrees of mobility and range, and the communication links are asymmetric. Many routing protocols for ad hoc networks routinely assume that all communication links are symmetric, if node A can hear node B and node B can also hear node A. Most current MAC layer protocols are unable to exploit the asymmetric links present in a network, thus leading to an inefficient overall bandwidth utilization, or, in the …

Supersonic Crossflow Visualization Using The University Of Central Florida Supersonic Wind Tunnel, Peter Himmerich

Electronic Theses and Dissertations

The next generation air breathing engine that would enable an alternative to conventional air travel or suborbital flight is the supersonic ramjet engine (SCRAM) which requires a highly accelerated rate of fuel mixing and combustion. For this type of engine, one of the improvement opportunities lies in the injection of the fuel into the supersonic flow inside the combustor. In order to determine the flow field that develops when a sonic jet of secondary gas is injected into a supersonic free stream, a dedicated test section was developed which was attached to the existing supersonic wind tunnel at the University …

Multi-View Geometric Constraints For Human Action Recognition And Tracking, Alexei Gritai

Electronic Theses and Dissertations

Human actions are the essence of a human life and a natural product of the human mind. Analysis of human activities by a machine has attracted the attention of many researchers. This analysis is very important in a variety of domains including surveillance, video retrieval, human-computer interaction, athlete performance investigation, etc. This dissertation makes three major contributions to automatic analysis of human actions. First, we conjecture that the relationship between body joints of two actors in the same posture can be described by a 3D rigid transformation. This transformation simultaneously captures different poses and various sizes and proportions. As a …

Management Systems Fit For Organizational Performance, Rey Diaz

Electronic Theses and Dissertations

The present study identifies the dimensions and variables using prior research within each of the constructs under the management systems, fit and, organizational strategy, structure, lifecycle and performance. The constructs from the research model were defined with a combination of direct, calculated and coded measures. Context analysis for each case categorized management systems design into either prescriptive or descriptive. The selected performance measures have been extensively investigated in the research fields associated with organizational management. The study uses the multiple case study design with cross-sectional data spanning from 1991 to 2005 and involving 19 aerospace companies in the United States. …

Using Electrochemical Monitoring To Predict Metal Release In Drinking Water Distribution Systems, Rajendra D. Vaidya

Electronic Theses and Dissertations

Corrosion of distribution system piping and home plumbing materials is a major concern in the water community. Iron release adverse affects aesthetic water quality and the release of copper and lead is regulated by the Lead and Copper rule (LCR) and can adversely affect consumer health. Corrosion control is typically done by pH regulation and/or addition of corrosion inhibitors. Monitoring of corrosion control is typically done after the fact by monitoring metal release, functional group concentration of the selected chemical species or water quality. Hence, the associated laboratory analyses create a significant delay prior to the assessment of corrosion in …

Dordt College 2007-2008 Catalog, Dordt College. Registrar's Office

Academic Catalogs

Academic Catalog for 2007-2008

The False Claims Act And Corporate Criminal Liability: Qui Tam Actions, Corporate Integrity Agreements And The Overlap Of Criminal And Civil Law, Sharon Finegan

Dickinson Law Review (1908-2003)

No abstract provided.

Price Discrimination In The Textbook Market: An Analysis Of The Post-Quality King Proposals To Prevent And Disincentivize Reimportation And Arbitrage, Christine Ongchin

Cardozo Journal of International and Comparative Law

The note examines how the rise of the internet and legal developments, particularly the Supreme Court's decision in Quality King Distributors v. Lanza, have disrupted traditional price discrimination practices in the textbook industry. Historically, publishers engaged in third-degree price discrimination, charging higher prices in the U.S. market due to geographic isolation and limited arbitrage opportunities. However, the internet has facilitated reimportation and arbitrage, undermining this practice. The first sale doctrine under 17 U.S.C. § 109(a) further complicates efforts to prevent resale of cheaper, internationally purchased textbooks in the U.S. market. Publishers must now consider alternative strategies, such as contractual …

Winning The Battle, But Perhaps Losing The War: Endorsing Deregulation Of Emergency Contraception At The Expense Of Derogating Abortion, Melissa Bond

Cardozo Journal of International and Comparative Law

No abstract provided.

E-Mail To Rebecca, Dale D. Goble

University of Colorado Law Review

H.L.A. Hart is probably the most important legal theorist in the modern English-speaking world. The intriguing subtitle of Nicola Lacey's intimate biography, "The Nightmare and the Noble Dream, " echoes the name of Hart's 1997 Georgia Law Review paper, in which he identifies two warring, equally inadequate, visions of law in American jurisprudence: the "nightmare" of complete indeterminacy and unbridled judicial discretion and the "noble dream " of a closed, deterministic legal system of judicial restraint. Lacey implies that Hart's life itself was both a nightmare and a noble dream. This book review expands on Lacey's work and suggests how …

Results Of The Chemical Analyses Produced At The Irsst For 2001-2005, Claude Ostiguy, Mathieu Fournier, Thierry Petitjean-Roget, Jacques Lesage, Alain Lajoie

Rapports de recherche scientifique

Cliquez ici pour la version française de ce rapport

Le réseau québécois de prévention compte plusieurs centaines de personnes qui interviennent régulièrement dans les entreprises afin d’y prélever des échantillons permettant d’évaluer la qualité de l’air. Ces échantillons sont analysés à l’IRSST.

De 2001 à 2005, dans le cadre de l’entente de service avec la CSST et son réseau et les ASP, des rapports annuels ont permis d’identifier certaines substances retrouvées en fortes concentrations dans les grands groupes industriels de la Classification des activités économiques du Québec (CAEQ) de 1984 (classification à deux chiffres). Le présent rapport dresse un portrait …

Bilan Et Perspectives De Recherche Sur La Sst Des Jeunes Travailleurs, Élise Ledoux, Marie Laberge

Rapports de recherche scientifique

Depuis une vingtaine d’années, plusieurs études ont mis en évidence le fait que les jeunes de moins de 25 ans se blessent suffisamment fréquemment au travail pour que cette situation devienne une préoccupation de santé publique tant au Canada, aux États-Unis qu’en Europe (Brooks et coll., 1993; Layne et coll., 1994; Hendricks et Layne, 1999; Millar, 1995; Dupre, 2001). Au Québec, ce constat incite de plus en plus les partenaires du réseau de la SST et la CSST à élaborer un plan d’action s’adressant spécifiquement à cette population (CSST, 2003).

Dans cette foulée, l’IRSST a entrepris une réflexion et mis …

Résultats Des Analyses De Substances Chimiques Produites À L'Irsst Pour La Période 2001-2005, Claude Ostiguy, Mathieu Fournier, Thierry Petitjean-Roget, Jacques Lesage, Alain Lajoie

Rapports de recherche scientifique

Click here for the English version of this report

Le réseau québécois de prévention compte plusieurs centaines de personnes qui interviennent régulièrement dans les entreprises afin d’y prélever des échantillons permettant d’évaluer la qualité de l’air. Ces échantillons sont analysés à l’IRSST.

De 2001 à 2005, dans le cadre de l’entente de service avec la CSST et son réseau et les ASP, des rapports annuels ont permis d’identifier certaines substances retrouvées en fortes concentrations dans les grands groupes industriels de la Classification des activités économiques du Québec (CAEQ) de 1984 (classification à deux chiffres). Le présent rapport dresse un portrait …

Démarche Stratégique De Prévention Des Problèmes De Santé Mentale Au Travail, Jean-Pierre Brun, Caroline Biron, Hans Ivers

Rapports de recherche scientifique

Click here for the English version of this report

Malgré une quantité impressionnante de données empiriques démontrant les conséquences néfastes du stress au travail sur la santé des individus et des organisations, il existe peu d’évidences scientifiques sur le processus d’implantation et l’efficacité des interventions visant à prévenir le stress au travail. Plusieurs revues de la littérature scientifique sur les programmes de prévention du stress au travail montrent la dominance des programmes de prévention centrés sur l’individu (DeFrank & Cooper, 1987; Van Der Hek & Plomp, 1997). Les effets associés à ce type d’intervention sont généralement limités et de durée …

Cedar Falls Civil War, Cynthia Rae Huffman Sweet

Dissertations and Theses @ UNI

A catalog for an exhibit about the Civil War, shown at the Cedar Falls Historical Society from February to August 2007. The exhibit included items demonstrating the impact of the war on the Cedar Falls area.

Eliminative Materialism And The Distinction Between Common Sense And Science, Nada Gligorov

Dissertations, Theses, and Capstone Projects

It is one of the premises of eliminative materialism that commonsense psychology constitutes a theory. There is agreement that mental states can be construed as posited entities for the explanation and prediction of behavior, and that the nature of those states is dependent on the theory that features them. Disputes arise when it comes to the range of the commonsense theory of mental states. In chapter one, I review major arguments concerning the span and nature of folk psychology. In chapter two, relying on arguments by Quine and Sellars, I argue that the precise scope of commonsense psychology cannot be …

Sexual Minority Youth In The Research Literature: The Invisible Students, Kelly J. Beck

Dissertations and Theses @ UNI

This research examines the topics addressed in the School Psychology literature and specifically looks at the amount of coverage the topic of sexual minority youth has received in the research literature in the last 15 years. A content analysis of research articles published in two prominent school psychology journals, School Psychology Review and School Psychology Quarterly, from 1990 to 2005 was conducted. The topics that received the most coverage included: (1) intervention, (2) assessment, and (3) ethical, legal and professional issues. Nine articles out of 901, less than 1 %, included the topic of sexual minority youth. The sub-groups, such …

A Case Study Using Guided Reading And Teacher Read-Alouds While Monitoring English Language Learners' And Native English Speakers' Reading Achievement, Kelsey M. Baker

Dissertations and Theses @ UNI

The number of English Language Learners (ELLs) in the United States continues to increase (U.S. Census Bureau, 2002); therefore, schools and educators are affected by the growing differences in students' language skills, prior experiences, and progress. This research addresses the need for understanding ELLs and how ELLs benefit from adults effectively reading aloud to them. Further research is needed on effective reading instruction for ELLs for several reasons. First, teachers are becoming ELL teachers by default and feel overwhelmed because of the responsibility to teach both language and content (Gersten, 2002). Second, an achievement gap exists between ELLs and native …

High School Dropout : Educators' Knowledge Of And Perceived Role In Dropout Prevention, Dustin Reese

Dissertations and Theses @ UNI

The reasons behind high school dropout have been examined for years. Previous research has focused primarily on understanding student characteristics in relation to high school dropout. However, teachers play an important role in preventing school dropout. Their beliefs about dropout may influence the way in which they interact with students, especially those they believe are at risk for dropout. Because of the critical influence teachers can have on students' educational decisions, this research sought to answer the following questions: (1) What factors do educators believe contribute to students' decision to drop out of school? and (2) What type of influence …

The Effects Of The Nutriactive Healthy Experience Intervention On Nutrition Knowledge In Kindergarten And First Grade Students, Jennifer Marie Bruss

Dissertations and Theses @ UNI

Over the past 30 years obesity in elementary school age children has gone from almost non-existence to common place. With obesity on the rise, the occurrence of diseases associated with it such as Type II diabetes, hypertension and dyslipidemia have also risen for children. These diseases are often carried into adulthood since overweight children are more likely to become overweight or obese adults. This will create another generation of obese children, continue to strain a failing health system, and add additional problems to our economy as the current obese generation heads into retirement.

Poor eating habits and insufficient physical activity …

Winter Commencement (Decenber 4, 2012), John David Walt, Donald E. Demaray, James Earl Massey

ATS Chapel Services

No abstract provided.

Motor Learning And Its Application To Accent Modification, Lindsey Nicole Clark

Dissertations and Theses @ UNI

As the numbers of immigrants and non-native speakers of English continue to be high in the United States, there will also continue to be those who wish to alter their manner of speaking. Currently, there is little research discussing the effectiveness of traditional therapy techniques (i.e. auditory training, drill, and phonetic placement; Schmidt and Meyers, 1995). However, in recent years, research has shown high success rates in therapies based on motor learning principles ( e.g. Backer, 2003; Mueller, 2004; Nelson, 2004). By definition, motor learning is "a set of processes associated with practice or experience leading to relatively permanent changes …

Manufacturing And Characterization Of Soy-Based Pultruded Polyurethane Composites, Rama Bhadra Raju Vuppalapati

Masters Theses

"In the recent past, composites have been finding various applications in civil infrastructure, marine, transportation, automotive and non-automotive applications by replacing metals in structural components. Pultrusion is considered to be a cost effective method for manufacturing composite materials.

Polyurethane resin systems form a good alternative to the conventional styrene based systems in pultrusion due to their better physical, chemical and mechanical properties. Polyols derived from soybean oil along with isocyanates produce polyurethanes that can match in many aspects with one derived from the petrochemical polyols. Even though, polyurethanes have good properties there are lots of challenges like designing unique material …

Damping Controllers For Power System Oscillations Using A Static Var Compensator, Sandhya R. Jetti

Masters Theses

"Damping of power system plays an important role in not only increasing the transmission capacity but also in stabilizing the power system, especially after critical faults. Static Var Compensator (SVC) is a shunt FACTS device which has capability of fast and continuous capacitive and inductive reactive power supply to the power system. SVCs are widely used for voltage stability but studies show that they are also effective in providing damping to the system. In this thesis, three types of SVC damping controllers are designed. The first damping controller is an optimal linear controller in which the parameters of a damping …

35-45 Giga Hertz Transceiver System For Phase And Magnitude Detection, Aman Aflaki Beni

Masters Theses

"Nondestructive evaluation (NDE) is the science and practice of examining an object in a way that the object's usefulness is not adversely affected. Different types of NDE methods exist but this thesis is based on microwave and millimeter wave NDE using imaging techniques. Microwave NDE is based on illuminating the object under test with a microwave signal and studying the various properties of the reflected signal from the object. This reflected signal contains some information about the inner structure of the object under test. This information may be contained in several parameters including the phase and magnitude of the reflected …

Impact Of Lidar Nominal Post-Spacing On Dem Accuracy And Flood Zone Delineation, George T. Raber, John R. Jensen, Michael E. Hodgson, Jason A. Tullis, Bruce A. Davis, Judith Berglund

Faculty Publications

Lidar data have become a major source of digital terrain information for use in many applications including hydraulic modeling and flood plane mapping. Based on established relationships between sampling intensity and error, nominal post-spacing likely contributes significantly to the error budget. Post-spacing is also a major cost factor during lidar data collection. This research presents methods for establishing a relationship between nominal post-spacing and its effects on hydraulic modeling for flood zone delineation. Lidar data collected at a low post-spacing (approximately 1 to 2 m) over a piedmont study area in North Carolina was systematically decimated to simulate datasets with …

The Double Sunrise : A Novel And An Accompanying Exegesis, Australian National Identity And The Double Sunrise, Lynne Leonhardt

Theses: Doctorates and Masters

This thesis comprises a historical novel entitled 'The Double Sunrise' and an exegesis entitled 'Australian National Identity and "The Double Sunrise'". The novel contains three books. The narrative starts in Book I through the perspective of twelve-year-old, fatherless Virginia. The introductory scene, set in 1957, depicts the girl's consciousness and self-consciousness at the wedding of her mother, Valerie, a former English war-bride and war-widow, to her second husband Noel. When the newly married couple leave for their honeymoon, Virginia is left in the care of her aunt, Attie, (her father's twin sister) who lives on a farm in the south …

Changes In A Chinese Interior Design Firm Due To The Development And Use Of A Blog-Based Reflective Practitioner Knowledge Management System Inspired By Chinese Philosophy: An Autoethnographic Case Study, Chun Kwan Law

Theses: Doctorates and Masters

Dao (Way)

The Way that can be experienced is not true;

The world that can be constructed is not true.

The Way manifests all that happens and may happen;

The world represents all that exists and may exist.

To experience without intention is to sense the world:

To experience with intention is to anticipate the world.

These two experiences are indistinguishable;

Their construction differs but their effect is the same.

Beyond the gate of experience flows the Way'.

Which is ever greater and more subtle than/he world.

Lao-Tzu, TaoDeChing, tr. Peter A. Merel

This thesis is a reflective practitioner autoethnographic …