Digital Commons Network^™

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 . …

Mixing Flow Structures Of Scalloped, Forced Lobed Mixers Using Piv And Plif Measuring Techniques, Nathan J. Cooper

Masters Theses

An Experimental study of internal forced lobed mixers similar to those used in jet aircraft engines is performed using whole field species concentration and velocity measuring techniques. Planar temperature and velocity measurements using Planar Laser Induced Fluorescence (PLIF) and 2D Particle Image Velocimetry (PIV) are performed for lobed, lobed scalloped and splitter mixers in aqueous solution. Specific emphasis is given to study scallops or notches cut into the mixer trailing edge and their role in mixing enhancement. Mixing is compared through velocity and species concentration measurements on axial and streamwise planes for the three dimensional, forced mixers in a confined …

Lone Mothers And Welfare-To-Work Policies In Japan And The United States: Towards An Alternative Perspective, Aya Ezawa, Chisa Fujiwara

The Journal of Sociology & Social Welfare

This paper compares recent efforts to reduce lone mothers' reliance on cash assistance and support their increased participation in the workforce and economic independence in Japan and the United States. Similar to reforms introduced in the U.S. in 1996, lone mother policies in Japan have been subject to a series of cuts leading to the introduction of time limits and work-related programs in 2002. In this paper, we examine the character of recent welfare reforms in both countries and their implications for lone mothers' welfare and economic independence. Based on Japan's experience and recent lessons from the U.S., we show …

Cooperative Diversity For The Cellular Uplink: Sharing Strategies, Performance Analysis, And Receiver Design, Kanchan G. Vardhe

Graduate Theses, Dissertations, and Problem Reports (ETD)

In this thesis, we propose data sharing schemes for the cooperative diversity in a cellular uplink to exploit diversity and enhance throughput performance of the system. Particularly, we consider new two and three-or-more user decode and forward (DF) protocols using space time block codes. We discuss two-user and three-user amplify and forward (AF) protocols and evaluate the performance of the above mentioned data sharing protocols in terms of the bit error rate and the throughput in an asynchronous code division multiple access (CDMA) cellular uplink. We develop a linear receiver for joint space-time decoding and multiuser detection that provides full …

An Integrated Computer-Based Timber Cruising System For Appalachian Hardwoods, Jingxin Wang

Graduate Theses, Dissertations, and Problem Reports (ETD)

In order to facilitate resource data collection and processing, an integrated computer-based timber cruising system was modeled and developed based on Microsoft Component Object Model (COM) and Objected-Oriented Programming (OOP) techniques. The system consists of three components - handheld data collection system, data transfer, and data analysis, all of which are stand-alone objects. The handheld system, which is Windows CE based, was used to collect overstory and understory tree data in the field. Data transfer and analysis components reside on a desktop PC and were used to synchronize cruising data from handheld PCs, analyze data and generate reports. A relational …

Exploring Career Satisfaction, Burnout, And Compassion Fatigue As Indicators Of The Quality Of Career Engagement Of Public School Educators, Beth Colleen Robinson

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study explored the experiences of career satisfaction, burnout, and compassion fatigue in public school educators working with students in Primary/Kindergarten through grade 12 in schools in Nova Scotia and West Virginia. The research participants included 184 teachers, counselors, and administrators employed by the Annapolis Valley Regional School Board in Nova Scotia and Monongalia County Board of Education in West Virginia. Participants completed a questionnaire assessing the constructs of compassion satisfaction, burnout, and compassion fatigue that have been conceptualized in this study as indicators of healthy career engagement, career disengagement, and career overengagement, respectively. Participants also responded to a demographic …

Economic Evaluation Of Prophylactic Antiemetic Regimens For Prevention Of Chemotherapy -Induced Nausea And Vomiting (Cinv), Reema R. Mody

Graduate Theses, Dissertations, and Problem Reports (ETD)

New antiemetic agents, aprepitant and palonosetron have been approved for prevention of chemotherapy-induced nausea and vomiting (CINV). The objectives of the two phases of the study were: (1) to conduct cost-effectiveness analysis of antiemetic regimens for prevention of CINV in patients receiving highly emetogenic chemotherapy (HEC) and in patients receiving moderately emetogenic chemotherapy (MEC) using decision models, and (2) to determine the monetary value of improved emesis control and conduct cost-benefit analysis of the new antiemetic regimens. Regimen A, one of the four antiemetic strategies included in the HEC decision model was a combination of aprepitant and the standard regimen …

The Use Of Charge -Charge Correlation In Impedance Measurements: A Test Of The Epet Method, Christopher W. Gregory

Graduate Theses, Dissertations, and Problem Reports (ETD)

It is well known that biological tissues possess impedance properties that might be useful in medical diagnostics and treatment. Electrical Impedance Tomography (EIT) images internal electrical properties by using numerical methods to solve Laplace's differential equation. The indirect reconstruction method (IRM), a common method in application, predicts internal electrical property distribution by iteratively computing a forward and inverse solution. This approach reduces the non-linear Laplace's equation into a poorly conditioned series of linear equations, which are solved simultaneously. This method suffers from high computational effort and is susceptible to prediction errors that stem from measurement noise.;As an alternative to Laplace's …

A Study Of Ion Acceleration, Asymmetric Optical Pumping And Low Frequency Waves In Two Expanding Helicon Plasmas, Xuan Sun

Graduate Theses, Dissertations, and Problem Reports (ETD)

This work concerns measurements of parallel ion flow, optical pumping, and low frequency waves in expanding plasmas generated by two different helicon plasma sources. The measurements confirm numerical predictions of the formation of a current-free double layer in a region of diverging magnetic field. With laser-induced fluorescence (LIF), the double layer structure in both helicon plasma sources was investigated through measurements of the bulk parallel ion flow speed. Both double layers have a total potential drop of 3-4 kTe and length scales smaller than ion-neutral mean-free-path. A stronger double layer, with a potential drop of ∼ 6kTe , was created …

Evaluation Of The Transverse Load Capacity Of Block Stoppings For Mine Ventilation Control, Thomas M. Barczak

Graduate Theses, Dissertations, and Problem Reports (ETD)

The transverse loading requirement for stoppings as specified in the current Code of Federal Regulations is 39 psf. This measure is based on physical testing of a freestanding wall in accordance with ASTM E 72 specifications, where the dominant parameter is the tensile strength of the sealant. A new protocol based on arching has been developed to determine the true transverse load capacity of stoppings. Arching is achieved by the restraint of the stopping against the mine roof and floor, whereby compressive forces are developed within the wall. A laboratory procedure using the NIOSH Mine Roof Simulator (MRS) to simulate …

A Qualitative Study Of Pre -Service Teachers Using Co -Teaching As A Method To Understand Scientific Process Skills To Teach *Inquiry, Jennifer Carter Mccain

Graduate Theses, Dissertations, and Problem Reports (ETD)

The National Science Education Standards (NSES) have established scientific literacy as a goal for all students. The goals advocate scientific inquiry as an instructional strategy to be used in the classroom, and standards of inquiry have even been established. At the same time, co-teaching has become prevalent in classroom as regular education teachers work with special education teachers. The classrooms are inclusive and both teachers are to work together to benefit all the students. Research has shown positive perceptions and negative perceptions of co-teaching. In this study, pre-service teachers are co-taught an elementary science methods course at a medium-sized university. …

The Alaska Health Care Decisions Act, Analyzed, Kenneth C. Kirk

Alaska Law Review

No abstract provided.

Pretrial Publicity, Presumed Prejudice, And Change Of Venue In Alaska: Public Opinion Surveys As A Tool To Measure The Impact Of Prejudicial Pretrial Publicity, Rich Curtner, Melissa Kassier

Alaska Law Review

No abstract provided.

The Place Of God In Modern Cosmology, Fr. Alexander Shimbalev

Faith and Philosophy: Journal of the Society of Christian Philosophers

No abstract provided.

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.

M4@Si28 (M=Al,Ga) Metal-Encapsulated Tetrahedral Silicon Fullerene, Yi Gao, Xiao Cheng Zeng

Xiao Cheng Zeng Publications

It is known that silicon fullerenes cannot maintain perfect cage structures like carbon fullerenes. Previous density-functional theory calculations have shown that even with encapsulated species, nearly all endohedral silicon fullerenes exhibit highly puckered cage structures in comparison with their carbon counterparts. In this work, we present theoretical evidences that the tetrahedral fullerene cage Si₂₈ can be fully stabilized by encapsulating a tetrahedral metallic cluster (Al₄ or Ga₄). To our knowledge, this is the first predicted endohedral silicon fullerene that can retain perfectly the same cage structure (without puckering) as the carbon fullerene counterpart (T_{d …}

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 …

Measles Seroepidemiology In 3 Cities In Turkey, Aysegul Gozalan, Gulay Korukluoglu, Demet Kurtoglu, Kikuko Miyamura, Neziha Yilmaz, Morihiro Morita, Berrin Esen, Levent Akin

Saudi Medical Journal

OBJECTIVE: To evaluate immunity against measles and its relation with some variables among healthy subjects in 3 cities in Turkey. METHODS: We carried out a cross-sectional study on measles antibody titers in the serum samples of 712 people from Antalya, 696 from Diyarbakir and 667 from Samsun, Turkey using particle agglutination test between February 2000 and October 2001. The study groups, informed and asked for their consent by midwives, consisted of randomly selected subjects of all ages older than 6 months. We implemented the study in 3 steps: physical examination, interview and blood collection. RESULTS: We considered titers of >=1:16 …

A Rare Presentation Of Hydatid Cyst, Nuran Sabir, Basak Yildirim, Banu Cetin, Mustafa Sengul, Erkan Alatas

Saudi Medical Journal

Hydatid disease, although known to occur in most body areas, is extremely rare in the female reproductive system. There are different modes of presentation for the disease; however, we report and discuss a case presented with cystic vesicles passing through the vagina, which is considered as a rare presentation for secondary involvement of the uterus and both ovaries. We confirmed diagnosis with radiological examinations and serological tests. We operated on the patient, and studied the excised cysts microscopically. The gynecologist should be aware of hydatid cyst when vaginally passing a grape like vesicle is presented by the patient.

Paper Substrates For Electronic Printing, Laura K. Wood

Masters Theses

Printed Radio Frequency Identification (RFID) labels utilize conductive inks to provide the means for wireless flow of electronic signals. An RFID label is an identification label with an integrated circuit and antenna that transmits data via radio waves to a reader, which sends the data to a computer for processing. RFID labels allow manufacturers and retailers to accurately track their inventory more efficiently than previously possible with bar codes. However, etched metal RFID labels are too expensive for widespread implementation. The key to reducing the cost of RFID technology is replacing etched metal tags with tags printed with conducting ink. …

Agrarian Impressions, Barney M. Durrence

College of Graduate Studies: Theses & Dissertations

The images and words assembled in this thesis describe and relate experiences from my past that seem necessary to understanding my current body of ceramic and mixed media sculptures. As the title Agrarian Impressions implies, the stoneware sculptures are based upon memories from growing up on a self-sufficent farm. In addition to my functional work, my sculptures reference tools and machines used to aid the production and harvest of crops and troughs and animal feeders. Problem solving abilities learned long ago and which sometime appear as humorous make-do solutions, reflect the confidence farming has given me to take chances. In …

Selected Georgia High School Principals' Perceptions Of Student Diversity, Ronald James Wiggins

College of Graduate Studies: Theses & Dissertations

This study was conducted to identify Georgia high school principals' perceptions of student diversity. The student demographics of many Georgia school districts and schools are changing rapidly, while some school districts and schools have not experienced much, if any, demographic change. As a result, it is important for principals to be aware of what other principals perceive as advantages and disadvantages, the types of policies/programs that impact principals in regard to student diversity as well as to be familiar with artifactual evidence that may represent an appreciation or awareness of student diversity. The data displayed in this study was gathered …

Receipt Of Health Information, Body Mass Index, And Physical Activity And Dietary Behaviors Among University Students, Julianne M. Meadows

College of Graduate Studies: Theses & Dissertations

This study examined relationships between receipt of health information, body mass index (BMI), and dietary and physical activity behaviors in a sample of university students (n=1,799). A cross-sectional design assessed health-risk behaviors. Students were placed into dichotomous categories related to receipt of health information, then grouped by risk and non-risk for each dependent behavioral variable; descriptive statistics were then generated. Odds ratios assessed relationships between receipt of health information and activity, diet, and nutrition for normal-weight and overweight students; odds ratios also assessed associations between BMI and diet and activity behaviors. Post-hoc analyses were also conducted. Students who received health …

Controllability, Observability And Realizability, Inna N. Smith

College of Graduate Studies: Theses & Dissertations

In this research project, we analyze three important concepts of the control theory, including controllability, observability and realizability. In particular, we analyze the theory of and solutions to linear time systems, continuous and discrete time systems, time-varying systems, and first-order matrix Sylvester systems. Examples and sample computed calculations are provided for both uncontrolled and controlled systems. We also develop a new method for computing the approximate values of matrix exponentials, and use this to estimate solutions to initial value problems.

Sponge Community Structure And Anti-Predator Defenses On Temperate Reefs Of The South Atlantic Bight, Richard Robert Ruzicka

College of Graduate Studies: Theses & Dissertations

The interaction between predation and anti-predator defenses of prey is important in shaping community structure in all ecosystems. This study examined the relationship between sponge predation and the distribution of sponge anti-predator defenses on temperate reefs in the South Atlantic Bight. Significant differences in the distribution of sponge species, sponge densities, and densities of sponge predators were documented across two adjacent reef habitats. Significant differences also occurred in the distribution of sponge chemical and structural defenses with chemical deterrence significantly greater in sponges associated with the habitat having higher predation intensity. Structural defenses, although effective in some instances, appear to …

Impact Of Labeling, Legislation, And Accommodations On The Academic Achievement Of African American Students With Learning Disabilities, Kimberly Suress Gaiters-Fields

College of Graduate Studies: Theses & Dissertations

During the last three decades, public schools have positively contemplated the concepts of mainstreaming, least restrictive environment and inclusion and have begun to serve more students with disabilities in K-12 general edcuation classes (Hicks-Coolick & Kurtz, 1996). There has been a corresponding increase in the number of students with disabilities who attend college and universities. However, at the postsecondary level, issues of educating students with disabilities are often different than those affecting K-12 education, and the instructional climate is much more challenging. Therefore, this trend calls for a more systematic method of assessing needed accommodations for diverse learning needs. The …

The Federal Computer Commission, Kevin Werbach

North Carolina Law Review

No abstract provided.

Sex Offenders, Unlawful Combatants, And Preventive Detention, Michael Louis Corrado

North Carolina Law Review

No abstract provided.

Deja Vu All Over Again: Transportation Security Regulations - The Emergence Of Re-Regulation And How To Deal With It, Eric L. Zalud

Transportation Law Journal

No abstract provided.

Competition In Air Transport - The Need For A Shift In Focus, Ruwantissa Abeyratne

Transportation Law Journal

No abstract provided.