Digital Commons Network^™

Modeling, Parameter Identification, And Validation Of Reactant And Water Dynamics For A Fuel Cell Stack, D. A. Mckay, W. T. Ott, A. G. Stefanopoulou

Engineering: Faculty Publications

This paper describes a simple two-phase flow dynamic model that predicts the experimentally observed temporal behavior of a proton exchange membrane fuel cell stack and a methodology to experimentally identify tunable physical parameters. The model equations allow temporal calculation of the species concentrations across the gas diffusion layers, the vapor transport across the membrane, the degree of flooding in the electrodes, and then predict the resulting decay in cell voltage over time. A nonlinear optimization technique is used for the identification of two critical model parameters, namely the membrane water vapor diffusion coefficient and the thickness of the liquid water …

The Colby Echo (2005-12-01), Colby College

The Colby Echo

Published by the students of Colby College since 1877, The Colby Echo is the weekly, editorially independent student-run newspaper of Colby College in Waterville, Maine. Published monthly, 1877-1886; semi-monthly, 1886-1897; and weekly, during the academic year, 1898-present.

Assessing The Biological Weapons And Bioterrorism Threat, Milton Leitenberg Mr.

Books, Monographs & Collaborative Studies

It is nearly 15 years since biological weapons (BW) have become a significant national security preoccupation. This occurred primarily due to circumstances occurring within a short span of years. First was the official U.S. Government suggestion that proliferation of offensive BW programs among states and even terrorist groups was an increasing trend; second was the discovery, between 1989 and 1992, that the Union USSR had violated the Biological Weapons Convention (BWC) since its ratification in 1975 by building a massive covert biological weapons program; third was the corroboration by the UN Special Commission in 1995 that Iraq had maintained a …

Assessing The Biological Weapons And Bioterrorism Threat, Milton Leitenberg Mr.

Books, Monographs & Collaborative Studies

It is nearly 15 years since biological weapons (BW) have become a significant national security preoccupation. This occurred primarily due to circumstances occurring within a short span of years. First was the official U.S. Government suggestion that proliferation of offensive BW programs among states and even terrorist groups was an increasing trend; second was the discovery, between 1989 and 1992, that the Union USSR had violated the Biological Weapons Convention (BWC) since its ratification in 1975 by building a massive covert biological weapons program; third was the corroboration by the UN Special Commission in 1995 that Iraq had maintained a …

Ethical Guidelines In Genetics And Genomics. An Islamic Perspective, Aida I. Al-Aqeel

Saudi Medical Journal

We are at a time of unprecedented increase in knowledge of rapidly changing technology. Such biotechnology especially when it involves human subjects raises complex ethical, legal, social and religious issues. A World Health Organization expert consultation concluded that "genetics advances will only be acceptable if their application is carried out ethically, with due regard to autonomy, justice, education and the beliefs and resources of each nation and community." Public health authorities are increasingly concerned by the high rate of births with genetic disorders especially in developing countries where Muslims are a majority. Therefore, it is imperative to scrutinize the available …

Assisted Reproductive Technology. What Is Needed In The Kingdom Of Saudi Arabia?, Muhammad A. Majeed-Saidan

Saudi Medical Journal

In 1978, the first in vitro fertilization baby was born. Since then, we have seen the introduction of several new modalities of assisted reproductive technologies ART, and the spread of ART procedures throughout the world. The number of ART units in the Kingdom of Saudi Arabia is increasing rapidly. The associated complications of ART procedures include fetal, maternal and childhood.

Nonalcoholic Fatty Liver Disease. Correlation With Histology And Viral Hepatitis, Gulen Akyol, Ozlem Erdem, Guldal Yilmaz

Saudi Medical Journal

OBJECTIVE: Nonalcoholic fatty liver disease (NAFLD) involves a heterogeneous group of diseases that places some patients at risk of progression to cirrhosis. In this study, our aim was to investigate the relationships between the histopathological features of NAFLD, hepatic stellate cell activation, and capillarization to find a marker related to fibrosis, for NAFLD. METHODS: We studied liver biopsies from 62 patients with NAFLD, 21 patients with hepatitis B, and 19 patients with hepatitis C from the archives of the Department of Pathology, Gazi University Medical School, between 1997 and 2004. We performed immunoperoxidase stains for a-smooth muscle actin (a-SMA) and …

A New Technique To Avoid Losing The Strains Of Echinococcus Multilocularis During Passaging, Tonay Inceboz, Metin Korkmaz, Ahmet Uner

Saudi Medical Journal

OBJECTIVE: To examine the survival of Echinococcus multilocularis (E. multilocularis) and the formation of protoscoleces, under refrigerated conditions over a 43-day observation period. METHODS: We conducted this study in Ege University, School of Medicine, from May-December, 2004. We included 4 healthy females and 2 males, 8-12 week old M. unguiculatus species (approximately 60-70 gr) for the study, as they are known to be susceptible to E. multilocularis. In this experimental study, we aimed to define a technique to keep the strains during these passages. RESULTS: We found preserved viability and virulence of E. multilocularis stored in RPMI 1640 plus 10% …

Anesthesia Management In Kabuki Make-Up Syndrome, Remziye Sivaci, Orhan K. Kahveci, Muge Celik, Ali Altuntas, Mustafa Solak

Saudi Medical Journal

Kabuki make-up syndrome KMS is a rare condition with a number of characteristic congenital abnormalities. The syndrome is characterized by peculiar facial appearance resembling the make-up of actors in Kabuki, the traditional Japanese theater, skeletal anomalies, dermatoglyphic abnormalities, postnatal growth deficiency, and mental retardation. These are rare reports of central nervous system dysfunctions, other than mental retardation, and no previously described congenital talipes calcaneo-valgus in this syndrome. We report the case of a 22-month-old girl having Kabuki make-up. At presentation, she had an adenoid hypertrophy and a history of recurrent otitis media. She had also delay in motor development, and …

Developing Culturally Sensitive Skills In Health And Social Care With A Focus On Conducting Research With African Caribbean Communities In England, Gina Marie Awoko Higginbottom, Laura Serrant-Green

The Qualitative Report

Researchers may not feel equipped to conduct qualitative research with ethnic minority communities in England because they may lack of culturally sensitive research skills. The aim of this paper is to explore how researchers might integrate culturally sensitive research skills into their work. This paper draws on our own experiences of conducting research with African Caribbean communities in England, and from workshops we facilitated with researchers and community representatives. The purpose of the workshops was to establish the most pertinent issues in conducting research with ethnic minority communities in England. We gathered data from the participants and created themes based …

An Ethnographic-Case Study Of Beliefs, Context Factors, And Practices Of Teachers Integrating Technology, Julie Angers, Krisanna L. Machtmes

The Qualitative Report

This ethnographic-case study explored the beliefs, context factors, and practices of three middle school exemplary teachers that led to a technology-enriched curriculum. Findings suggest that these middle school teachers believe technology is a tool that adds value to lessons and to students learning and motivation. Due to a personal interest in technology, these teachers are self-taught and apply for grants to acquire new hardware and software. They receive support for release time to continue with ongoing professional development, which has helped to change their teaching strategies from teacher-centered to student-centered. They are not afraid to take risk using trial and …

Hispanic Political Power: A Case Study Of Southwest Michigan, Jason Glatz

Masters Theses

This thesis examines the relationship between rising Hispanic immigration and its influence on voting patterns. It examines thirteen Southwestern Michigan counties and compares averaged Republican voting percentages from past elections for the U.S. House of Representatives with the 2000 election. Previous research has established that Hispanics, with the exception of Cubans, predominantly vote for Democratic candidates. If this relationship is true for Southwest Michigan, areas with increasing Hispanic populations should display diminishing Republican voting percentages.

A normal Republican vote was computed for 284 minor civil divisions from the period immediately preceding significant Hispanic immigration and was compared to the 2000 …

The Journey Of A Social Movement: A Glimpse Into Hizb 'Allah And Its Integration Into The Lebanese Landscape, Lisa L. Peters

Masters Theses

Historically, research in Social Movement Theories has been limited to only certain aspects of a social movement, whether it was the impetus of the movement, explaining the reasons for its mobilization, how they recruit members and money, how social movements are able to function as an organization, or why groups suffer demise after flourishing for a period of time. This research attempts to build a framework of a particular social movement, Hizb'allah, a Shi'a Islamic movement based in Lebanon. This framework is built by extracting various elements from several social movement theories to explain and illustrate this movement's life course …

Systems For Predicting Pitzer’S Ion-Interaction Model Parameters, Theresa Balderas Obias

Masters Theses

Pitzer's Ion-interaction Model had been widely used in predicting the non-ideal behavior of solution over a wide range of conditions for natural water systems. The model is successful only when there are sufficient parameters available. However, generating these needed parameters requires a great quantity of work and it would be advantageous to be able to predict the Pitzer's parameters for salt systems when there is no data available.

This research entailed the development of ionic radii dependent equations for Pitzer's binary ion-interaction parameters β_MX⁽⁰⁾, β_MX⁽¹⁾, β_MX⁽²⁾, and C^ϕ_MX . …

Ductile Regime Nano-Machining Of Silicon Carbide, Biswarup Bhattacharya

Masters Theses

This thesis describes experimental work carried out to study the ability to ductile . single point diamond turn both polycrystal Silicon Carbide (SiC) and chemically vapor deposited (CVD) SiC. A Precitech diamond turning machine was used for ductile regime machining of polycrystal SiC at depths of 10 and 25 nm. The possibility of machining SiC in the ductile mode was substantiated by post process analysis of the chips collected during machining and the surface profiles. The force data obtained during machining was recorded and compared later with the different depth of cuts. An investigation into the ability to single point …

Perceptions Of High Risk Behaviors Among Culturally Diverse Adolescents And The Role Of Parental Influence And Parent Communication, Sharlene E. Junio

Master's Projects

Eighty seven ethnically diverse 9th and 1oth graders from an urban high school in Northern California were studied. Students were mostly female, between 14 and 16 years of age, and reported to be mostly Asian and Filipino. Students completed an 18-item Likert scale questionnaire requesting information about their overall relationship with their parents and their communication with their parents about drugs, sex, alcohol, birth control, and personal problems. Results of this study showed that participants rated their overall relationship with their parents as "good" or "very good." Despite this, communication was lacking among parents and adolescents in all topics of …

Effects Of Common Forage Phenolic Acids On Escherichia Coli O157:H7 Viability In Bovine Feces, J. E. Wells, E. D. Berry, V.H. Varel

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Ruminant animals are carriers of Escherichia coli O157:H7, and the transmission of E. coli O157:H7 from cattle to the environment and to humans is a concern. It is unclear if diet can influence the survivability of E. coliO157:H7 in the gastrointestinal system or in feces in the environment. Feces from cattle fed bromegrass hay or corn silage diets were inoculated with E. coliO157:H7, and the survival of this pathogen was analyzed. When animals consumed bromegrass hay for <1 month, viable E. coliO157:H7 was not recovered after 28 days postinoculation, but when animals consumed the diet for >1 month, E. coli …

Duck, Duck, Goose: Hunting For Better Recusal Practices In The United States Supreme Court In Light Of Cheney V. United States District Court, Timothy J. Goodson

North Carolina Law Review

No abstract provided.

Giving Users The Steering Wheel For Guiding Resource-Adaptive Systems, Joao Sousa, Rajesh Krishna Balan, Vahe Poladian, David Garlan, Mahadev Satyanarayanan

Research Collection School Of Computing and Information Systems

Addressing resource variation plays an increasingly important role in engineering today's software systems. Research in resource-adaptive applications takes an important step towards addressing this problem. However, existing solutions stop short of addressing the fact that different user tasks often have specific goals of quality of service, and that such goals often entail multiple aspects of quality of service. This paper presents a framework for engineering software systems capable of adapting to resource variations in ways that are specific to the quality goals of each user task. For that, users are empowered to specify their task-specific preferences with respect to multiple …

Financial Security In Later Life: A National Initiative And Model For Extension, Nancy M. Porter, Sharon Devaney, Richard L. Poling, Marlene S. Stum

Journal of Extension

A national Extension initiative on Financial Security in Later Life was established to strengthen the Cooperative Extension System's capacity to deliver personal finance education leading to financial security in later life. The initiative articulates the research that provides the foundation for Extension programs and models the use of the Internet for program design, delivery, and evaluation. The contributions of the initiative are enhanced capacity of Extension educators, shared resources, and aggregated evaluations. The development of the initiative provides insights for eXtension.

The Internet And Civil Society: Environmental And Labour Organizations In Hong Kong, Yin-Wah Chu, James T. H. Tang

Research Collection School of Social Sciences

To what extent has the Internet strengthened civil society? In which ways have civil society organizations (CSOs) used the internet to communicate their missions, enhance the discussion of public issues, extend networks and mobilize collective actions? This article seeks to answer these and related questions by reporting on an empirical study in Hong Kong. The study involves an analysis of the web pages launched by 14 environmental groups and 22 labour organizations on the one hand, and in-depth interviews with representatives of five of these organizations on the other. Due to the lack of resources and low level of e-readiness …

Is Ladies' Night Really Sex Discrimination?: Public Accommodation Laws, De Minimis Exceptions, And Stigmatic Injury, Jessica E. Rank

Seton Hall Law Review

No abstract provided.

Inside Unlv, Lanelda Rolley, Shane Bevell, Carol C. Harter, Lanelda Rolley, Mamie Peers, Diane Russell

Inside UNLV

No abstract provided.

Transforming Our Regional Economy, Ziona Austrian, Ed Morrison, Laszio Kozmon

All Maxine Goodman Levin School of Urban Affairs Publications

This strategic action plan focuses on the future of Cuyahoga County and sets forth a roadmap to build a more prosperous economy. It is not the only road map available to us, and we can certainly improve upon it. But, it is a roadmap that is practical, one that we can begin using today. We have set out initiatives that can and should be implemented.

Advanced Structured Query Language Instruction For Engineers Of The Office Of Information Technology At Brigham Young University, Vincent Brian Rackliffe

Theses and Dissertations

This report describes the purpose, design, development and analysis of SQLTips, an online instructional delivery framework and set of instructional modules relating to advanced features and performance tuning of Oracle's Structured Query Language (SQL). SQLTips was developed using Wiki, server-side software that allows users to edit web pages with almost any browser. The report includes a literature review of existing SQL instructional materials and a review of instructional theory. The report also includes a description of the formative evaluation process and results. These results show that SQLTips is easy and enjoyable to use. Based on a scale of 1 to …

Preliminary Design Approach For Prosthetic Ankle Joints Using Compliant Mechanisms, Jason Matthew Wiersdorf

Theses and Dissertations

The objective of this thesis is to develop design approaches and models for prosthetic ankle joints using kinematic models of the human ankle and compliant mechanisms technology. Compliant mechanisms offer several potential design advantages over traditional rigid-body designs including high reliability and low cost. These design advantages are ideal for use in prosthetics. Some prosthetic ankle/foot systems currently on the market have multiple degrees of freedom yet are expensive. Additionally, even though these systems have multiple degrees of freedom, none of them are designed after the actual movements of the biological ankle. In this thesis a two, single degree-of-freedom hinge …

Regulation By Adaptive Management--Is It Possible?, J.B. Ruhl

Vanderbilt Law School Faculty Publications

Today's voluminous literature on adaptive management traces its roots to Professor C.S. Holling's seminal work, Adaptive Environmental Assessment and Management. Although almost thirty years have passed since he and his colleagues first described the adaptive management methodology, no work on the topic has improved on their core theory. Its essence is an iterative, incremental decisionmaking process built around a continuous process of monitoring the effects of decisions and adjusting decisions accordingly. It is in other words, far more suited to the needs of future regulatory challenges than is prescriptive regulation. My focus, however, is not on what adaptive management should …

Share Price As A Poor Criterion For Good Corporate Law, Lynn A. Stout

Cornell Law Faculty Publications

Academics, reformers, and business leaders all yearn for a single, objective, easy-to-read measure of corporate performance that can be used to judge the quality of public corporation law and practice. This collective desire is so powerful that it has led many commentators to grab onto the first marginally plausible candidate: share price.

Contemporary economic and corporate theory, as well as recent business history, nevertheless warn us against unthinking acceptance of share price as a measure of corporate performance. This Essay offers a brief reminder of some of the many reasons why stock prices often fail to reflect true corporate performance, …

The Election Cycle, And The U.S. Withdrawal From Vietnam, Steven Thomas Stoddard

Undergraduate Honors Capstone Projects

Few events in American history have proved to be as divisive and controversial as U.S. involvement in the Vietnam War. Although U.S. policy in Indochina has its roots in the Truman Administration, the two presidents most closely associated with the conflict are Lyndon B. Johnson, and Richard M. Nixon. These two are particularly important because they both occupied the White House during the highest levels of direct U.S. involvement in the war. In terms of troop deployments to Southeast Asia, the level and intensity of U.S. involvement peaked under the Johnson Administration and it was at this time that the …

White-Collar Plea Bargaining And Sentencing After Booker, Stephanos Bibas

William & Mary Law Review

No abstract provided.