Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2007

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 3091 - 3120 of 12232

Full-Text Articles in Entire DC Network

Increased Resistance Of Escherichia Coli O157:H7 To Electron Beam Following Repetitive Irradiation At Sub-Lethal Doses And An Analysis Of Genes Of Escherichia Coli Resistance, Leah Levanduski Aug 2007

Increased Resistance Of Escherichia Coli O157:H7 To Electron Beam Following Repetitive Irradiation At Sub-Lethal Doses And An Analysis Of Genes Of Escherichia Coli Resistance, Leah Levanduski

Graduate Theses, Dissertations, and Problem Reports (ETD)

One way that food processors in the United States control food-borne pathogens in a non-thermal manner is with the application of electron beam (e-beam) radiation. Increased resistance of Escherichia coli O157:H7 to various stressors such as pH, temperature, ionic strength, and antibiotics has been demonstrated; therefore, the objective of this study was to determine if the D10-value for E. coli O157:H7 ( E. coli) in ground beef increases due to repetitive exposure to e-beam at sub-lethal levels. Ground beef samples were inoculated with an ATCC strain of E. coli and incubated to approximately 109 CFU/g followed by e-beam processing. Survivors …

Go to article

Biolayer Modeling And Optimization For The Sparrow Biosensor, Ke Feng Aug 2007

Biolayer Modeling And Optimization For The Sparrow Biosensor, Ke Feng

Graduate Theses, Dissertations, and Problem Reports (ETD)

Biosensor direct detection of molecular binding events is of significant interest in applications from molecular screening for cancer drug design to bioagent detection for homeland security and defense. The Stacked Planar Affinity Regulated Resonant Optical Waveguide (SPARROW) structure based on coupled waveguides was recently developed to achieve increased sensitivity within a fieldable biosensor device configuration. Under ideal operating conditions, modification of the effective propagation constant of the structure's sensing waveguide through selective attachment of specific targets to probes on the waveguide surface results in a change in the coupling characteristics of the guide over a specifically designed interaction length with …

Go to article

Reflecting On Teaching Practices Using Digital Video Representation In Teacher Education, C Paul Newhouse, Jenny Lane, Claire Brown Aug 2007

Reflecting On Teaching Practices Using Digital Video Representation In Teacher Education, C Paul Newhouse, Jenny Lane, Claire Brown

Australian Journal of Teacher Education

This paper reports on the perceptions of teacher education student of the value of using digital tools to analyse video-based information on the practice of teachers in classrooms. This strategy was employed to address a dilemma in providing sufficient exposure to real examples of good classroom teaching to link theory with practice. The use of video of teachers in action could augment their practicum experience in schools but this required efficient and effective access to appropriate video material. For this purpose, the use of digital tools in a system called LessonLab was successfully implemented in an introductory unit focussed on …

Go to article

Parametric Design Of A Coal Mine Refuge Chamber, Michael A. Fasouletos Aug 2007

Parametric Design Of A Coal Mine Refuge Chamber, Michael A. Fasouletos

Graduate Theses, Dissertations, and Problem Reports (ETD)

In 2006 several coal mine tragedies led to safety legislation to provide post accident protection to coal miners. One of the key aspects of this legislation was providing refuge areas where miners could await rescue if they could not escape the mine. These refuge areas were to be designed to sustain life for four days, providing the miners with adequate oxygen, carbon dioxide scrubbing, food, water, and reasonable temperature control. A parametric study has been performed to provide further definition of the requirements in order to design an optimal portable refuge chamber with little or no electricity to enhance the …

Go to article

Segmentation Of Images With Low-Contrast Edges, Matthew J. Madden Aug 2007

Segmentation Of Images With Low-Contrast Edges, Matthew J. Madden

Graduate Theses, Dissertations, and Problem Reports (ETD)

A vast amount of the current research in medical image analysis has aimed to develop improved techniques of image segmentation. Of the existing approaches, active contour methods have proven effective by incorporating edge or region information from the image into a level set formulation. However, complications arise in images containing regions of low-contrast due to noise, occlusions, or partial volume effects, which are often unavoidable in practical applications. Incorporating prior shape information into the segmentation framework provides a more accurate and robust solution by constraining the evolving contour to resemble a target shape. Two methods are presented to incorporate a …

Go to article

Payment In Credit: Copyright Law And Subcultural Creativity, Rebecca Tushnet Aug 2007

Payment In Credit: Copyright Law And Subcultural Creativity, Rebecca Tushnet

Georgetown Law Faculty Publications and Other Works

Copyright lawyers talk and write a lot about the uncertainties of fair use and the deterrent effects of a clearance culture on publishers, teachers, filmmakers, and the like, but we know less about the choices people make about copyright on a daily basis, especially when they are not at work. Thus, this article examines one subcultural group that engages in a variety of practices, from pure copying and distribution of others' works to creation of new stories, art, and audiovisual works: the media-fan community. Fans justify their unauthorized derivative works as legitimate, no matter what formal copyright law says, with …

Go to article

Idiopathic Epilepsy Of Childhood And Potassium Ion Channels, Alper I. Dai, Mohammad Wasay Aug 2007

Idiopathic Epilepsy Of Childhood And Potassium Ion Channels, Alper I. Dai, Mohammad Wasay

Department of Medicine

Potassium can affect the development of common seizure type and can be defined seizure susceptibility allele. The existence of inward-rectifying potassium (Kir) channels was first recognized half a century ago. The biophysical fingerprint of Kir channels is inward rectification in the current-voltage relationship , which limits potassium efflux at depolarizing membrane potentials. Kir channels are essential in the control of resting membrane potential, coupling of the metabolic cellular state with membrane excitability, and maintenance of potassium homeostasis. The critical interval contains several candidate genes, one of which, KCNJ10, exhibits a potentially important polymorphism with regard to fundamental aspects of seizure …

Go to article

Delayed Angiogenesis And Vegf Production In Ccr2−/− Mice During Impaired Skeletal Muscle Regeneration, Oscar Ochoa, Dongxu Sun, Sara M. Reyna, Lindsay L. Waite, Joel E. Michalek, Linda M. Mcmanus, Paula K. Shireman Aug 2007

Delayed Angiogenesis And Vegf Production In Ccr2−/− Mice During Impaired Skeletal Muscle Regeneration, Oscar Ochoa, Dongxu Sun, Sara M. Reyna, Lindsay L. Waite, Joel E. Michalek, Linda M. Mcmanus, Paula K. Shireman

School of Medicine Publications

The regulation of vascular endothelial growth factor (VEGF) levels and angiogenic events during skeletal muscle regeneration remains largely unknown. This study examined angiogenesis, VEGF levels, and muscle regeneration after cardiotoxin (CT)-induced injury in mice lacking the CC chemokine receptor 2 (CCR2). Muscle regeneration was significantly decreased in CCR2−/− mice as was the early accumulation of macrophages after injury. In both mouse strains, tissue VEGF was similar at baseline (no injections) and significantly decreased at day 3 post-CT. Tissue VEGF in wild-type (WT) mice was restored within 7 days postinjury but remained significantly reduced in CCR2−/− mice until day 21. …

Go to article

Land Use And Settlement Patterns In Michigan, 1763-1837, Ray De Bruler Jr. Aug 2007

Land Use And Settlement Patterns In Michigan, 1763-1837, Ray De Bruler Jr.

Dissertations

This dissertation examines various types of land use practices and settlement patterns from the end of the French era through statehood at Detroit, the Straits of Mackinac and the St. Joseph River Valley. In addition, this work describes a series of land ordinances, treaties, land office practices and acts and demonstrates how they shaped, or tried to shape, the ways people viewed the land and what they did with it. Michigan is an excellent case study for analyzing land use because it was the point of interaction among three distinct cultural and political groups, French, British and American, and each …

Go to article

The Nature Of Japan's Official Development Assistance: Japan's Bilateral Oda And Its National Interests, 1981-2001, Seiki Muratani Aug 2007

The Nature Of Japan's Official Development Assistance: Japan's Bilateral Oda And Its National Interests, 1981-2001, Seiki Muratani

All-Inclusive List of Electronic Theses and Dissertations

The concept of national interests has always been a key for studies of foreign policy. Japan's foreign aid, known as Official Development Assistance (ODA), is the single most significant political and diplomatic tool in the arena of Japanese foreign policy due to Japan's war-renouncing Article 9. However, the argument of the relationship between Japan's ODA policy and national interests is unclear. Although there are various qualitative arguments about the study of Japan's ODA, a systematic quantitative aid allocation study is rarely done. The central question of this thesis is what interests is Japan pursuing when it allocates its bilateral ODA, …

Go to article

2007 August, Office Of Communications & Marketing, Morehead State University. Aug 2007

2007 August, Office Of Communications & Marketing, Morehead State University.

Morehead State Press Release Archive, 1961 to the Present

Press releases for August of 2007.

Go to article

The Sensitivity And Psychometric Properties Of A Brief Computer-Based Cognitive Screening Battery In A Depression Clinic, Scott Aaron Langenecker, Angela F. Caveney, Bruno Giordani, Elizabeth A. Young, Kristy A. Nielson, Lisa J. Rapport, Linas A. Bieliauskas, Matthew J. Mordhorst, Sheila Marcus, Naomi Yodkovik, Kevin Kerber, Stanley Berent, Jon-Kar Zubieta Aug 2007

The Sensitivity And Psychometric Properties Of A Brief Computer-Based Cognitive Screening Battery In A Depression Clinic, Scott Aaron Langenecker, Angela F. Caveney, Bruno Giordani, Elizabeth A. Young, Kristy A. Nielson, Lisa J. Rapport, Linas A. Bieliauskas, Matthew J. Mordhorst, Sheila Marcus, Naomi Yodkovik, Kevin Kerber, Stanley Berent, Jon-Kar Zubieta

Psychology Faculty Research and Publications

At present, there is poor accuracy in assessing cognitive and vegetative symptoms in depression using clinician or self-rated measures, suggesting the need for development of standardized tasks to assess these functions. The current study assessed the psychometric properties and diagnostic specificity of a brief neuropsychological screening battery designed to assess core signs of depression; psychomotor retardation, attention and executive functioning difficulties, and impaired emotion perception within an outpatient psychiatry setting. Three hundred eighty-four patients with mood disorders and 77 healthy volunteers participated. A large percentage of patients met diagnostic criteria for Major Depressive Disorder alone (49%) or with another comorbid …

Go to article

Feasibility And Performance Analysis Of Sensor Modeling In Opnet, Niranjan Krishnamurthi Aug 2007

Feasibility And Performance Analysis Of Sensor Modeling In Opnet, Niranjan Krishnamurthi

Theses

The current surge in wireless sensor network research has led to the extensive use of network simulation software to simulate new and novel protocols. Analysis via simulation allows for the validation of protocols before being fully deployed in physical networks. Though superior in modeling RF signals and network operations, current wireless network simulation software lack fully functional sensor models that replicate a sensor’s interaction with the environment. Realistic and specific sensor models do exist, however very little has been incorporated into commonly used network simulators. It is questionable whether the typical approach of modeling sensed data as random processes offers …

Go to article

Using Multispectral Sensor Wasp-Lite To Analyze Harmful Algal Blooms, Shari J. Mcnamara Aug 2007

Using Multispectral Sensor Wasp-Lite To Analyze Harmful Algal Blooms, Shari J. Mcnamara

Theses

Developing methods to monitor harmful algae is a current research “hot-topic.” One type of algae, the blue-green algae or Cyanobacteria, cause blooms that can lead to a health threat to humans and animals. This research will test the use of a cost effective and temporally efficient method using multispectral remote sensing system, WASPLITE, as a monitor of algal blooms. This airborne system will be optimized to the specific application of detecting Cyanobacteria on optically complex waters. Attempts have been made in the past using existing instruments, e.g., SeaWiFS and Landsat, to provide these data, but our solution can provide more …

Go to article

Simulation, Visualization And Self-Assessment Tools For Enhanced Engineering Education The Stiffness Matrix Method Module For Structural Analysis, Ahmed Ali Mohammed Aug 2007

Simulation, Visualization And Self-Assessment Tools For Enhanced Engineering Education The Stiffness Matrix Method Module For Structural Analysis, Ahmed Ali Mohammed

Civil & Environmental Engineering Theses & Dissertations

Existing macromedia FLASH software which has extensive and exciting simulation and visualization capabilities is utilized to develop the "Stiffness Matrix Method" (SMM) module, which is one of the new topics ( offered for the first time in Spring 2007 semester) covered in a Structural Analysis I course, offered at the junior level at Old Dominion University. The developed software (under the FLASH environment), including tutorial lectures to explain all necessary theoretical backgrounds, formulas, step-by-step computerized procedures and numerical examples are presented in simple, user friendly, visualized, interactive fashion to enhance the student's learning capabilities. Through numerous graphical visualization and simulation …

Go to article

Treating Water Contamination Using Ultraviolet Radiation To Control Cryptosporidium And E.Coli, Michael O'Hehir, David Kennedy, Thomas Dunphy Aug 2007

Treating Water Contamination Using Ultraviolet Radiation To Control Cryptosporidium And E.Coli, Michael O'Hehir, David Kennedy, Thomas Dunphy

Articles

Concerns about the quality of drinking water in Ireland have come into sharp focus with the recent Cryptosporidium outbreak in Galway City. This article looks at how ultraviolet radiation can offer a potential solution in the control of Cryptosporidium contamination.

Go to article

Pparα Is A Key Regulator Of Hepatic Fgf21, Thomas Lundasen, Mary Hunt, Lisa-Marie Nilsson, Sabysashi Sanyal, Bo Angelin, Stefan Alexson, Mats Rudling Aug 2007

Pparα Is A Key Regulator Of Hepatic Fgf21, Thomas Lundasen, Mary Hunt, Lisa-Marie Nilsson, Sabysashi Sanyal, Bo Angelin, Stefan Alexson, Mats Rudling

Articles

The metabolic regulator fibroblast growth factor 21 (FGF21) has antidiabetic properties in animal models of diabetes and obesity. Using quantitative RT-PCR, we here show that the hepatic gene expression of FGF21 is regulated by the peroxisome proliferator-activated receptor alpha (PPARalpha). Fasting or treatment of mice with the PPARalpha agonist Wy-14,643 induced FGF21 mRNA by 10-fold and 8-fold, respectively. In contrast, FGF21 mRNA was low in PPARalpha deficient mice, and fasting or treatment with Wy-14,643 did not induce FGF21. Obese ob/ob mice, known to have increased PPARalpha levels, displayed 12-fold increased hepatic FGF21 mRNA levels. The potential importance of PPARalpha for …

Go to article

Hay Quality Sensory Evaluation Guidelines, T. C. Griggs, S. C. Franson, M. G. Bohle Aug 2007

Hay Quality Sensory Evaluation Guidelines, T. C. Griggs, S. C. Franson, M. G. Bohle

All Current Publications

Grass, legume, and mixed hays contribute to natural resource conservation, diversity in crop rotations, livestock health and performance, and economic returns from sustainable agriculture.

Go to article

Truth, Justice, And The American Dilemma, Robert Batey Aug 2007

Truth, Justice, And The American Dilemma, Robert Batey

San Diego Law Review

McCleskey v. Kemp is without doubt a memorable case. Professor David C. Baldus and his colleagues, Charles A. Pulaski and George Woodworth, had produced a detailed statistical study of the operation of the death penalty in Georgia showing, in the words of the Supreme Court, that "black defendants, such as McCleskey, who kill white victims have the greatest likelihood of receiving the death penalty." McCleskey used this study to challenge his capital sentence under both the Equal Protection and Cruel and Unusual Punishment Clauses. Like any statistical proof, the Baldus study had been challenged on methodological grounds. The Supreme Court …

Go to article

International Criminal Jurisdiction In The Twenty First Century: Rediscovering United States V. Bowman, Ellen S. Podgor, Daniel M. Filler Aug 2007

International Criminal Jurisdiction In The Twenty First Century: Rediscovering United States V. Bowman, Ellen S. Podgor, Daniel M. Filler

San Diego Law Review

In Part I of this Article, we provide a description of the facts and holding of United States v. Bowman. In Part II, we describe the ways in which lower courts have interpreted this decision. We point to various cases citing Bowman and show how these courts give exceedingly broad application to the holding - far broader application than the opinion warrants. Finally, in Part III, we discuss the ways in which the courts should read Bowman and demonstrate how this more accurate reading of the Court's decision is consistent with the realities of twenty-first century global economies. In doing …

Go to article

Striking A Balance In Unlawfully Obtained Confession Cases: United Kingdom Pragmatism Against Principle, Jenny Mcewan Aug 2007

Striking A Balance In Unlawfully Obtained Confession Cases: United Kingdom Pragmatism Against Principle, Jenny Mcewan

San Diego Law Review

In Part I of this Article, we provide a description of the facts and holding of United States v. Bowman. In Part II, we describe the ways in which lower courts have interpreted this decision. We point to various cases citing Bowman and show how these courts give exceedingly broad application to the holding - broader application than the opinion warrants. Finally, in Part III, we discuss the ways in which the courts should read Bowman and demonstrate how this more accurate reading of the Court's decision is consistent with the realities of twenty-first century global economies. In doing so, …

Go to article

Re-Engineering Xid Technologies - From Enterprise To Consumer Markets, Arcot Desai Narasimhalu Aug 2007

Re-Engineering Xid Technologies - From Enterprise To Consumer Markets, Arcot Desai Narasimhalu

Research Collection School Of Computing and Information Systems

Several studies have addressed the process of taking ideas to markets but few have shared the experiences of start up companies that have reexamined their product strategies and repositioned their products and services for better revenues and profits. This paper reports the efforts related to repositioning of XID technologies, a start up company, into new markets while continuing to exploit its core technical competencies.

Go to article

On Their Own Ground: Strategies Of Resistance For Sunni Muslim Women, Theresa W. Tobin Aug 2007

On Their Own Ground: Strategies Of Resistance For Sunni Muslim Women, Theresa W. Tobin

Philosophy Faculty Research and Publications

Drawing from work in feminist moral philosophy, Tobin argues that the most common methodology used in practical ethics is a questionable methodology for addressing practical problems across diverse cultural contexts because the kind of impartiality it requires is neither feasible nor desirable. She then defends an alternative methodology for practical ethics in a global context and uses her proposed methodology to evaluate a problem that confronts many Sunni Muslim women around the world.

Go to article

Landscape Ecology Of Crayfish (Decapoda: Cambaridae) In West-Central Indiana, Jacob L. Burskey Aug 2007

Landscape Ecology Of Crayfish (Decapoda: Cambaridae) In West-Central Indiana, Jacob L. Burskey

All-Inclusive List of Electronic Theses and Dissertations

I investigated the distribution, zoogeography, and habitat associations of crayfish (Decapoda: Cambaridae) in an area of west central Indiana containing glaciated and unglaciated regions. I first sampled 180 streams within Vigo, Clay, Owen, Sullivan, Greene, and Knox counties to establish spatial distributions of crayfish species and gather information on natural history and site specific habitat conditions. Ten species were found; Cambarus (Tubericambarus) polychromatus, Cambarus (Lacunicambarus) sp.A, Cambarus (Erebicambarus) laevis, Fallicambarus (Creaserinus)fodiens, Procambarus (Girardiella) gracilis, Procambarus (Ortmannicus) acutus, Orconectes (Triscellescens) immunis, Orconectes ( Gremicambarus) virilis, Orconectes ( Crockerinus) propinquus, - Orconectes (Faxinous) indianensis. The two rarest species were 0. indianensis (collected …

Go to article

Cattle Corral Design- Learning By Doing, Stephen Boyles Aug 2007

Cattle Corral Design- Learning By Doing, Stephen Boyles

Journal of Extension

Quality Assurance training for adults has placed little emphasis on human injury and carcass defects such as bruising. To reduce the incidence of human injury and carcass defects, people need to understand corral design and animal behavior. An interactive curricula was developed using fence panels big enough to be placed on a tabletop. Participants were able to use the panels to make corral designs. There have been 2,304 people who have participated in the corral design and animal handling programs offered by the author. Evaluations averaged a 9.2 ± 0.58 on a 10-point scale (1=terrible idea, 10=great idea).

Go to article

Steps To Bolster Your Dairy Farm's Biosecurity: An Introductory Video, Julia M. Smith Aug 2007

Steps To Bolster Your Dairy Farm's Biosecurity: An Introductory Video, Julia M. Smith

Journal of Extension

The Healthy Farms--Healthy Agriculture video overview of dairy farm biosecurity serves as a stand-alone teaching tool or an introduction to additional resources. The narrated video takes the viewer through the steps needed to build a sound biosecurity program. These steps form the acronym "STAIRS," standing for sanitation, traffic control, assessment, isolation, resistance, and security. Bringing biosecurity to life in pictures makes it easier to teach or reemphasize basic concepts.

Go to article

Does 4-H Camp Influence Life Skill And Leadership Development?, Martha S. Garton, Margaret Miltenberger, Brenda Pruett Aug 2007

Does 4-H Camp Influence Life Skill And Leadership Development?, Martha S. Garton, Margaret Miltenberger, Brenda Pruett

Journal of Extension

WV conducted a two-phase study involving over 2,000 campers to learn how 4-H camp affects life skills and leadership development. Camp is at the heart of many states' 4-H programs; however, there is limited research to document the impact. Fifteen counties with 28 individual camps participated in the study, which measured (1) camp experience, (2) targeted Life Skills, and (3) leadership skills. The study found that 4-H experiential learning activities at camp positively affect campers' life skills and leadership skills. Results should be used to guide the future measurement of 4 H camp impact and to strengthen camping curriculums.

Go to article

Consumer Interest In Food Systems Topics: Implications For Educators, Jan Perez, Phil Howard Aug 2007

Consumer Interest In Food Systems Topics: Implications For Educators, Jan Perez, Phil Howard

Journal of Extension

To assist consumers in understanding food system issues and to help them make informed choices, educators first need to engage their interests. To identify widely held consumer interests, focus groups informed a random sample survey conducted in the Central Coast region of California. Survey respondents reported the most interest in the safety and nutrition of their food, as well as in the external impacts of how their food was produced. Correlational analysis was used to explore characteristics and behaviors associated with these interests. The results offer strategies for public issues educators to target or structure food system related education initiatives.

Go to article

Ultrasound Technology Helps Youth Raise Industry-Acceptable Market Animals, Scott A. Nash Aug 2007

Ultrasound Technology Helps Youth Raise Industry-Acceptable Market Animals, Scott A. Nash

Journal of Extension

Ultrasound estimates of carcass data have been collected on over 1,900 4-H market hogs, lambs, and steers at fairs in southeast Idaho from 1999 to 2005. The data were collected as part of an educational program to help youth raising animals for the food chain to understand industry acceptability. The results of the data indicate that market hog loin-eye size increased 1.14 inches while backfat thickness decreased by 27%; market lamb ribeye area increased almost 15%; and the number of steers with adequate IMF to reach the USDA Choice quality grade increased 130%.

Go to article

Re-Analysis Of "Plutonium In Autopsy Tissue": A Case/Control Examination Of Nuclear Weapons Sites And Civilian Lung Burden, Carolina Peace Resource Center, Rita A. Fellers Jul 2007

Re-Analysis Of "Plutonium In Autopsy Tissue": A Case/Control Examination Of Nuclear Weapons Sites And Civilian Lung Burden, Carolina Peace Resource Center, Rita A. Fellers

Carolina Peace Resource Center

This research uses advanced statistical techniques to re-analyse the plutonium burden in lung tissue data from “Plutonium in Autopsy Tissue: A Revision and Updating of Data Reported in LA-4875” by McInroy et al. (1979).1 The use of a general linear model has produced new preliminary findings whose potential was not apparent in the findings of the earlier work. Regions surveyed included Los Alamos National Laboratory (NM), Nevada Test Site (NV), Rocky Flats Plant (CO), and Savannah River Site (SC). This model specified a gamma distribution and linked an exponential function to the dependent variable, plutonium burden in lung, controlling for …

Go to article

First Prev Next Last