Digital Commons Network^™

Electrohydrodynamically Augmented Micro Heat Pipes, Zhiquan Yu

Graduate Theses and Dissertations

No abstract provided.

Improving Quality Of Service For Next Generation Networks With Active Buffer Management, Bing Zheng

Graduate Theses and Dissertations

No abstract provided.

The Synthesis Form Of The Constraint Manifold In The Design Of Planar Parallel Manipulators, Jon Michael Stevens

Graduate Theses and Dissertations

No abstract provided.

Improving The Performance Of Future Differentiated Service Network, Hongjun Su

Graduate Theses and Dissertations

No abstract provided.

Active Control Of Sound: Using A Feedback Control Technique, Asim Syed Mohammed

Graduate Theses and Dissertations

No abstract provided.

Application Of Piezoelectric Actuators For Vibration Reduction In The F-15, Juan Ramon Martinez Ortiz

Graduate Theses and Dissertations

No abstract provided.

An Examination Of Relationships Between Alternative Teaming Arrangements, Academic Achievement, And Self Esteem For Disadvantaged Middle School Students, Lloyd D. Martin

Graduate Theses and Dissertations

No abstract provided.

Characterization Of Accumulated Fatigue Damage In Ti-6al-4v Plate Material Using Transmission Electron Microscopy And Nonlinear Acoustics, Julia Lynn Stojak Maurer

Graduate Theses and Dissertations

No abstract provided.

A Study Of The Relationship Between Student Attitudes Toward School And Achievement On The Ohio Proficiency Tests, Gary M. Mcdowell

Graduate Theses and Dissertations

No abstract provided.

Effects Of Aging On Working Memory And Workload, Starr Lynn Mcgettigan

Graduate Theses and Dissertations

No abstract provided.

Development Of A Mathematical Model To Predict Particle Damping, Steven Eric Olson

Graduate Theses and Dissertations

No abstract provided.

Teachers' Opinions About Half-Day And Full-Day Kindergarten, Jacqueline Elizabeth Drees Thase

Graduate Theses and Dissertations

No abstract provided.

A Kalman-Filtering Approach For Non-Uniformity Correction In Infrared Focal-Plane Array Sensors, Sergio N. Torres

Graduate Theses and Dissertations

No abstract provided.

Students' Perceptions Regarding Their Teachers' Instructional Qualities And Practices, Blair Andrew Riggle

Graduate Theses and Dissertations

No abstract provided.

Support Appraisals And Interpersonal Attraction: How Are They Different?, Jason Charles Roush

Graduate Theses and Dissertations

No abstract provided.

Acoustical Linear And Nonlinear Behavior Of Fatigued Titanium Alloys, Jérôme Frouin

Graduate Theses and Dissertations

No abstract provided.

Non-Uniform Electric Field Partial Discharge Endurance And Degradation Of Polymer Insulation With And Without Additives, John Charles Horwath

Graduate Theses and Dissertations

No abstract provided.

High School Science Teacher Perceptions Of The Science Proficiency Testing As Mandated By The State Of Ohio Board Of Education, Samuel S. Jeffery

Graduate Theses and Dissertations

No abstract provided.

Feedforwardfeedback Forging Process Control Using Neural Networks, Ibrahim Hammad

Graduate Theses and Dissertations

No abstract provided.

Avian Use Of Various Bait Mixtures Offered In Harvested Cornfields During Spring Migration In South Dakota, George M. Linz, H. Jeffrey Homan, Ryan L. Wimberly

United States Department of Agriculture Wildlife Services: Staff Publications

The avicide, DRC-1339, is used to cull populations of spring-migrating blackbirds in eastern South Dakota to reduce damage to ripening sunflower in late summer. We investigated non-target bird hazards associated with using various grain mixtures to attract blackbirds (Icteridae), especially red-winged blackbirds (Agelaius phoeniceus), to avicide-treated bait broadcast in harvested cornfields. During spring 1997 and 1998, we recorded the species and numbers of birds attracted to 0.2-ha plots baited with cracked corn and brown rice, fine-chipped sunflower meats and brown rice (1997 only), and unsupplemented brown rice. Unbaited plots were used as reference sites. In 1997 and 1998, …

Pathology Of Brucellosis In Bison From Yellowstone National Park, Jack C. Rhyan, Thomas Gidlewski, Thomas J. Roffe, Keith Aune, L. Michael Philo, Darla R. Ewalt

United States Department of Agriculture Wildlife Services: Staff Publications

Between February 1995 and June 1999, specimens from seven aborted bison (Bison bison) fetuses or stillborn calves and their placentas, two additional placentas, three dead neonates, one 2-wk-old calf, and 35 juvenile and adult female bison from Yellowstone National Park (USA) were submitted for bacteriologic and histopathologic examination. One adult animal with a retained placenta had recently aborted. Serum samples from the 35 juvenile and adult bison were tested for Brucella spp. antibodies. Twenty-six bison, including the cow with the retained placenta, were seropositive, one was suspect, and eight were seronegative. Brucella abortus biovar 1 was isolated from …

Factors Associated With Occurrence And Density Of Wetland Birds In The Prairie Pothole Region Of Iowa, Steve E. Fairbairn, James J. Dinsmore

Journal of the Iowa Academy of Science: JIAS

Wetlands within wetland complexes in northwestern, north-central, and central Iowa were surveyed for bird use in 1997 and 1998. Species occurrence, species richness, and density of nesting species were related to wetland habitat variables. A habitat diversity index measuring the evenness of distribution of the different habitats within a wetland was the best predictor of species richness in both years. The habitat diversity index was also the best predictor of the occurrence of individual species in both 1997 and 1998. Eight of 11 species (7 3%) in 1997 and 13 of 18 species (72%) in 1998 had greater densities in …

The Case For Microbicides: A Global Priority, Kathy Attawell

HIV and AIDS

The HIV/AIDS epidemic continues to spread, undermining development, reversing health gains, and exacerbating poverty. It will be some time before a vaccine is available and accessible, thus there is an urgent need to identify additional prevention options, in particular a method that women control, which could save millions of lives. This report from the Population Council and International Family Health presents the case for microbicides—products used vaginally to prevent infection from HIV and other STIs in women and their sexual partners—and discusses recent progress and developments, outstanding challenges, and the action required to ensure that products will be made available …

Spatial Distribution Of Global Runoff And Its Storage In River Channels, Balazs M. Fekete

Doctoral Dissertations

The present dissertation attempts to improve our current understanding of some of the key elements of the surface runoff and its horizontal transfers in rivers. The dissertation presents an intensive analysis of the uncertainties in water balance calculations and the impact of uncertainties in the input data and the formulation of the water balance calculations on the runoff estimate. A simple technique is presented to combine observed river discharge and simulated runoff to derive accurate estimates of the spatially distributed runoff. Such composite runoff estimates are valuable for numerous earth science and water resource studies.

The dissertation also discusses the …

Making Connections: Compartmentalization In Pre -Calculus Students' Understanding Of Functions, Hope H. Gerson

Doctoral Dissertations

Students develop knowledge constructs that they build into concepts through their experiences. Students demonstrate compartmentalization when they understand a construct or concept within one representation, but not another, or when they do not connect mathematically related ideas. For instance, a student may understand f(x) to mean plug x into the function within a symbolic representation, but the same student may understand f(x) to mean f times x within a tabular representation. A student with these understandings has a compartmentalized understanding of function notation.

A two-month study was conducted with a class of pre-calculus students enrolled in a parochial high school. …

The Level Of Teacher Involvement In The Vermont Mathematics Portfolio Assessment Process And Instructional Practices In Grade 4 Classrooms, Carol Anne Fritz

Doctoral Dissertations

The comprehensive assessment system in Vermont includes student mathematics portfolios that are submitted to the state Department of Education for scoring. A student portfolio should include 5--7 pieces of best work selected by the student that can be scored. This alternative assessment process has been in place for ten years, but limited information has been available from classroom teachers about the instructional practices they use when teaching mathematics, or whether or not those practices have been influenced by the portfolio process.

The study was developed to answer questions about the instructional practices used by teachers. Teachers' responses were compared to …

Non-Adiabatic Features In Magnetotail Fast Flows: Orbit Tracing And Data Comparisons, Bryan Michael Boll

Doctoral Dissertations

The purpose of this study is to investigate velocity space distribution functions in space plasmas. Orbit tracing methods are used to generate self-consistent models of several different magnetic and electric field configurations. Fast flows in the magnetotail are selected to be modeled using a relatively thin current sheet compared with quiet times. Four different electric fields are imposed, varying in characteristic thickness and magnitude. Using these four particle based models we were able to generate velocity distribution functions that show clear evidence of non-adiabatic features that depend on the electric field characteristic width. Several years of Geotail Comprehensive Plasma Instrumentation …

Relational Learning For A Sustainable Future: An Eco -Spiritual Model, Mary Elizabeth Westfall

Doctoral Dissertations

We are facing unprecedented environmental challenges as we enter the new millennium as human choices and practices have repeatedly led to environmental degradation. Increasingly there are individuals and groups seeking to address this environmental crisis and move toward more sustainable patterns of living. But in order to make alternative choices it will be essential to draw upon the wealth and variety of human capabilities.

For nearly 350 years Western culture has looked to reason and rationality to provide truth and direction. The affective side of being human, feelings, intuition, love, care, wonder, mystery and hope have largely been devalued. In …

Reflexivity, Elementary Operators And Cohomology, Jiankui Li

Doctoral Dissertations

Let H be a separable complex Hilbert space and let B(H) be the set of all bounded operators on H. In this dissertation, we show that if S is a n-dimensional subspace of B( H), then S is [ 2n ]-reflexive, where [t] denotes the largest integer that is less than or equal to t.

We obtain some lattice-theoretic conditions on a subspace lattice L which imply alg L , is strongly rank decomposable. Let S be either a reflexive subspace or a bimodule of a reflexive algebra. We find some conditions such that T has a rank one summand …

Detection Of Giardia Lamblia And Cryptosporidium Parvum In The Eastern Oyster (Crassostrea Virginica) Harvested From The Great Bay Estuary, Kim Marie Stowell

Doctoral Dissertations

The Great Bay Estuarine system is being impacted by point source and nonpoint source pollution that affect shellfish quality. Many outbreaks of human gastroenteritis are potentially caused by the consumption of raw or undercooked oysters in which the protozoan pathogens, Giardia lamblia and Cryptosporidium parvum are present. The development of a rapid and sensitive technique to detect infectious protozoa in oysters is a necessity.

Immunofluorescence has been employed as a technique for the detection of these organisms in drinking water. Cross reactivity with algae and the production of false positive results limits the usefulness of this technique in environmental studies. …