Digital Commons Network^™

Mathematical Model Of Dam Break( Applied Study Of Derna Dam), Mohamed G. Abdalla

Mansoura Engineering Journal

The Dam break is avery complicated proplem and it can‘t be foreseen exactly. Many researchers have studied the oroblem of oroblem of dam break by bredicting the behavior and the propagation of a flood wave using different approximations In the present research, the study of dam break was performed using a mathematical modeling as a tool to predict and simulate the dam break problem. Two major mathematical models were employed namely BREACH and FLDWAv for predicting such failure parameters as well as simulating the flow routing after dam break. Derna dam (northern east coast of of Libya) was taken as …

Professional Leadership Portfolio, Dorothy L. Walter

Digitized Theses and Dissertations (prior to 2008)

My name is Dorothy L. Walter and l am currently employed as a business education teacher at Creekside High School in South Fulton county. As an educator I have enjoyed a progressive six year history of successful teaching in the public school system. In addition to a very successful teaching cafeer, my previous business background includes over 15 years of managerial experience in Accounting and Finance and an MBA degree. While these experiences have provided me a wealth of opportunities to develop outstanding leadership qualities, I feel most appreciative for the opportunity to enhance my educational leadership potential by being …

Virtual Electro-Photographic Printer Model, Sunadi Gunawan

Theses

A halftone image in the computer is a bitmap matrix that contains either 0 or 1 , where 0 means the printer will not deposit any toner onto a paper and 1 means the printer will deposit some amount of toner onto a paper. The amount of toner that is put by the printer onto a paper for a given input signal pattern is characterized. The hypothesis was that the distribution of toner mass on the paper for a given input matrix pattern can be modeled with a toner point spread function, a toner transfer efficiency function, and a noise …

An Economic Analysis Of The Private Securities Litigation Reform Act: Auctions As An Efficient Alternative To Judicial Intervention, Charles H. Gray

William & Mary Law Review

No abstract provided.

The Random Muse: Authorship And Indeterminacy, Alan R. Durham

William & Mary Law Review

No abstract provided.

Quiet Time Variability Of The Geosynchronous Magnetic Field And Its Response To The Solar Wind, Jeff Sanny, J. A. Tapia, D. G. Sibeck, M. B. Moldwin

Physics Faculty Works

We present a survey of the variability of the geosynchronous magnetic field strength on the dayside using observations by the GOES satellites over a period exceeding 4 years. Only intervals of reduced geomagnetic activity, as defined by Dst > −20 nT, were considered in this study. The magnetic field strength data were filtered with a passband of 1.7 mHz to 17 mHz (1–10 minutes), a process that eliminates the diurnal variation of the field strength and the effects of most of the higher frequency (>17 mHz) ultralow-frequency (ULF) waves. The geosynchronous field strength appears to exhibit the greatest variability in …

Effects Of Acid Mine Drainage On Limnological Conditions And Fish Assemblages In The Cumberland Plateau Region Of The North Chickamauga Creek System, Tennessee, Jennifer Copeland Backer

Masters Theses and Doctoral Dissertations

Acid mine drainage (AMD) is the primary water pollution problem in Appalachian streams. The Cumberland Plateau (Southwestern Appalachians ecoregion) portion of North Chickamauga Creek (NCC), a fourth-order tributary to the Tennessee River (Tennessee), has been impacted by decades of AMD from active and abandoned coal mines. I assessed stream characteristics at 19 sites in the Cumberland Plateau region of the NCC system; these data were used to create a GIS database. Limnological conditions and fish assemblage attributes were compared between AMD-impacted and reference sites. Relationships were examined among water quality, habitat, and fish assemblage variables. Stream pH averaged lower at …

Effect Of Riparian Land Use On The Biotic Integrity Of Fish Assemblages In Black Creek, Chattanooga, Tennessee, Jerri Leigh Phillips

Masters Theses and Doctoral Dissertations

Black Creek is a third-order Ridge and Valley stream (Tennessee River drainage) in Chattanooga, Tennessee. Most ofBlack Creek's watershed is forested (ca. 71% in 1991 ). However, increasing urban development, particularly along the riparian landscapes, could impact the stream's ecological health. I assessed fish assemblages (biotic integrity), water quality, instream habitat, and riparian land-use features at eight sites in Black Creek, May-June 2000. Water quality conditions (temperature, dissolved oxygen, pH, conductivity) were favorable for stream fishes, but some level of habitat degradation (bank erosion, sedimentation, loss of riparian vegetation) was observed at all sites. Electrofishing samples yielded a total of29 …

Applying Learner-Centered Pedagogy To An Engineering Circuit-Theory Class At Smith College, Susan E. Voss, Glenn Ellis

Engineering: Faculty Publications

This paper discusses examples of learner-centered activities that have been incorporated into a circuit-theory course at Smith College. The learner-centered activities are organized around the structures of community, knowledge, and assessment. Specific examples include the use and ongoing development of "Concept Tests," frequent assessment of the students and the course, a peer-editing process facilitated by using class time to edit lab reports, and discussions and readings related to the social context within which electrical engineering concepts reside. This course is part of a program-wide effort to integrate learner-centered pedagogy into the entire engineering science curriculum.

Electronic-Structure Modifications Induced By Surface Segregation In La0.65Pb0.35Mno3 Thin Films, C.N. Borca, B. Xu, T. Komesu, H.-K. Jeong, M.T. Liu, Sy_Hwang Liou, Shane Stadler, Y. Idzerda, Peter A. Dowben

Peter Dowben Publications

Using spin-polarized inverse photoemission and X-ray absorption spectroscopy techniques, we show that the electronic structure of La_0.65Pb_0.35MnO₃ thin films depends on the composition at the surface. With a gentle annealing procedure, the surface provides a maximum of 80% spin asymmetry at 0.5 eV above the Fermi level in spite of extensive Pb segregation. A heavily annealed (restructured) surface exhibits a reduced surface "ordering" temperature of 240 K (compared to the approximately 335 K bulk value) as well as a reduced spin asymmetry value of 40% at 0.5 eV above Fermi energy.

Coexistence Of Ferromagnetic And Glassy States In Mechanically Milled Gdal2, C. Stark, P. M. Shand, T. M. Pekarek, D. Williams, R. Brown, Lanping Yue, Diandra Leslie-Pelecky

Diandra Leslie-Pelecky Publications

Measurements of DC susceptibility, AC susceptibility, and AC susceptibility with an applied DC bias field were performed on mechanically milled GdAl₂. A paramagnetic phase exists above a temperature T ≈ 140 K. However, there are significant deviations from the Curie-Weiss Law in this temperature regime, suggesting multiple magnetic components. Fits to the high temperature data show that two Curie-Weiss terms represent the data quite well. Below 140 K one of these magnetic components becomes ferromagnetic as indicated by a shoulder in the AC susceptibility and DC susceptibility data. This ferromagnetic component is suppressed by the application of sufficiently …

Adaptation Of Project Finance To Small Contractor Financing, Ragunathan Venkateswaran

Masters Theses

One key reason for the poor performance of small construction establishments in securing a higher chunk of the annual project volume is funding. While construction industry does not require a large capital investment it does require a large working capital to start up the project and generate bills so that the resulting cash flow may take over the remaining funding requirements. Unfortunately for small contractors there are very limited options available from the banks or other lending institutions to cover this large working capital requirement in the absence of sufficient collateral. The "Project Finance" method, which has been used in …

Mechanistic Studies On The Antagonistic Effect Of Chromium On Bpde Mutant Frequency In Human Fibroblasts, Felicia Codrea

Masters Theses

The purpose of this study was to investigate the possible mechanisms involved in the decrease in mutant frequency when cells are treated with two different types of carcinogens: chromium (VI) in combination with benzo(a)pyrene diol epoxide (BPDE). Three of our working hypotheses are: Cr alone or Cr and BPDE synergistically activate detoxifying enzyme glutathione-S-transferase (GST), Cr alone or Cr and BPDE act synergistically to inhibit cell cycle at the G₁/S boundary thus allowing more time for DNA repair, and Cr alone or Cr and BPDE synergistically activate DNA repair systems which result in more efficient repair of DNA …

Urinary Excretion Of Dithiocarbamates And Selfreported Cruciferous Vegetable Intake: Application Of The ‘Method Of Triads’ To A Foodspecific Biomarker, Jay H. Fowke, James R. Hébert, Jed W. Fahey

Faculty Publications

Objective: Greater intake of Cruciferous vegetables (e.g. broccoli) may prevent cancer at several sites. Urinary excretion of isothiocyanate conjugates (dithiocarbamates, DTC) provides a specific biomarker of Cruciferous vegetable consumption suitable for epidemiological investigations. However, no gold-standard referent is available for evaluating urinary DTC levels as an estimator of Cruciferous vegetable consumption. We compared urinary DTC levels to intake as measured by two selfreported dietary assessment techniques. Design: Cruciferous vegetable consumption was measured before and after a behavioural dietary intervention using multiple 24-hour recalls (24HR), a foodcounting questionnaire (VFQ) and urinary DTC excretion levels. Analysis included a structural equation approach (Method …

Power Scaling Feasibility Of Chromium-Doped Ii-Vi Laser Sources And The Demonstration Of A Chromium-Doped Zinc Selenide Face-Cooled Disk Laser, Jason B. Mckay

Theses and Dissertations

Tunable lasers in the 2-4 µm wavelength range are needed for Air Force sensor applications. Chromium-doped II-VI materials are a promising class of laser material for tunable operation in this wavelength range, but until recently had not produced enough output power to meet application requirements. This dissertation investigates Cr²⁺:II-VI material properties and potential laser designs, then experimentally demonstrates and analyzes the performance of a Cr²⁺:ZnSe disk laser design that can produce sufficient output power. Cr²⁺:II-VI laser materials are found to be susceptible to overheating and thermal lensing, but are otherwise satisfactory laser materials. The …

Texas School Finance Equalization And Student Performance, Christopher Duque

Theses and Dissertations - UTB/UTPA

The thesis examines which factors or school district inputs, i.e., financial, socio-economic, and administrative have a significant effect on student performance in Texas' school districts. The thesis is divided into five chapters, the introduction and the legal history of school finance reform, the history of Texas school finance policies and the current school finance policy, the literature review, the hypothesis and methodology, and the findings and conclusion of the thesis. The percentage of economically disadvantaged students was found to be significantly related to student performance in the thesis. And the thesis concludes that the state's school finance equalization policy has …

Wildlife Habitat Gis Modeling Study, Society For The Protection Of New Hampshire Forests

PREP Reports & Publications

This technical report is part of a larger study entitled Protecting Wildlife and Significant Habitat in Coastal New Hampshire, an initiative of the Great Bay Resource Protection Partnership (GBRPP), funded by the New Hampshire Estuaries Project. The fieldwork component of the study was implemented by the Audubon Society of New Hampshire (ASNH) and the N.H. Fish & Game Department Non-game and Endangered Wildlife Program (NHF&G) in 2002, in cooperation with The Nature Conservancy of New Hampshire (TNC). This report focuses on the GIS mapping and predictive habitat modeling developed by the Society for the Protection of N.H. Forests (SPNHF) in …

On Clustering And Retrieval Of Video Shots Through Temporal Slices Analysis, Chong-Wah Ngo, Ting-Chuen Pong, Hong-Jiang Zhang

Research Collection School Of Computing and Information Systems

Based on the analysis of temporal slices, we propose novel approaches for clustering and retrieval of video shots. Temporal slices are a set of two-dimensional (2-D) images extracted along the time dimension of an image volume. They encode rich set of visual patterns for similarity measure. In this paper, we first demonstrate that tensor histogram features extracted from temporal slices are suitable for motion retrieval. Subsequently, we integrate both tensor and color histograms for constructing a two-level hierarchical clustering structure. Each cluster in the top level contains shots with similar color while each cluster in bottom level consists of shots …

Resource Annotation Framework In A Georeferenced And Geospatial Digital Library, Zehua Liu, Ee Peng Lim, Dion Hoe-Lian Goh

Research Collection School Of Computing and Information Systems

G-Portal is a georeferenced and geospatial digital library that aims to identify, classify and organize geospatial and georeferenced resources on the web and to provide digital library services for these resources. Annotation service is supported in G-Portal to enable users to contribute content to the digital library. In this paper, we present a resource annotation framework for georeferenced and geospatial digital libraries and discuss its application in G-Portal. The framework is fiexible for managing annotations of heterogeneous web resources. It allows users to contribute not only the annotation content but also the schema of the annotations. Meanwhile, other digital library …

Crystalclear: Active Visualization Of Association Rules, Hian-Huat Ong, Kok-Leong Ong, Wee-Keong Ng, Ee Peng Lim

Research Collection School Of Computing and Information Systems

Effective visualization is an important aspect of active data mining. In the context of association rules, this need has been driven by the large amount of rules produced from a run of the algorithm. To be able to address real user needs, the rules need to be summarized and organized so that it can be interpreted and applied in a timely manner. In this paper, we propose two visualization techniques that is an improvement over those used by existing data mining packages. In particular, we address the visualization of "differences" in the set of rules due to incremental changes in …

Vdl: A Language For Active Mining Variants Of Association Rules, Kok-Leong Ong, Wee-Keong Ng, Ee Peng Lim

Research Collection School Of Computing and Information Systems

The popularity of association rules has resulted in several variations being proposed. In each case, additional attributes in the data are considered so as to produce more informative rules. In the context of active mining, different types of rules may be required over a period of time due to knowledge needs or the availability of new attributes. The present approach is the ad-hoc development of algorithms for each variant of rules. This is time consuming and costly, and is a stumping block to the vision of active mining. We argue that knowledge needs and the changing characteristics of the data …

Immobilization Of Fission Iodine By Reaction With A Fullerene Containing Carbon Compound And Insoluble Natural Organic Matrix: Quarterly Report September-December 2002, Spencer M. Steinberg

Separations Campaign (TRP)

The recovery of iodine released during the processing of used nuclear fuel poses a significant challenge to the transmutation of radioactive iodine. This proposal will develop and examine the use of Fullerene Containing Carbon (FCC) compounds as potential sorbents for iodine release from the reprocessing of nuclear fuel. This work will also include the development of bench-scale testing capabilities at UNLV to allow the testing of the FCC material in a simulated process off-gas environment. This experimental capability will also be used to test other potential sorbtion materials and processes, such as natural organic matter (NOM) and other promising alternatives. …

Inside Unlv, Diane Russell, Gian Galassi, Richard Jensen

Inside UNLV

No abstract provided.

Freedom Journey: A Roadmap To Success, Angela Lane Woods

Digitized Theses and Dissertations (prior to 2008)

A thesis submitted in partial fulfillment of the Requirements for the degree of Master of Arts in Professional Writing In the Department of English In the College of Humanities and Social Sciences

Examining The Similarities And Differences In Benefits Of School-To-Work As A Workforce Development Strategy: A Study Of Key Stakeholder Involvement Using A Multiple Case Study Approach, Alton Leon Alford

Dissertations

As we enter the new millennium, there is considerable evidence which indicates that in the 1990's many U.S. business were experiencing rapid growth and expansion resulting from a robust American economy. As a result, business activity in most employment sectors has shown many signs of future growth with projections of continued growth well into the 21st century. This growth in the new economy has resulted in a critical need for highly skilled entrants into the workforce whose working life times will extend toward the mid-twenty-first century (Judy & D'Amico, 1997). With an identified skills shortage looming over many U.S. corporations …

The Prairie Naturalist Volume 34, No. 3/4 September/December 2002

The Prairie Naturalist

SEASONAL FOOD HABITS OF COYOTES IN NORTHEASTERN KANSAS ▪ J. F. Kamler, P. S. Gipson, and C. C. Perchellet

SELECTION OF NESTING HABITAT BY SHARP-TAILED GROUSE IN THE NEBRASKA SANDHILLS ▪ B. L. Prose, B. S. Cade, and D. Hein

PATTERNS OF REPRODUCTION FOR WESTERN HARVEST MICE IN NORTH-CENTRAL KANSAS ▪ J. R. Goheen, G. A. Kaufman, and D. W. Kaufman

THE IMPACT OF RECREATIONAL TRAILS AND GRAZING ON SMALL MAMMALS IN THE COLORADO PIEDMONT ▪ C. A. Meaney, A. K. Ruggles, N. W. Clippinger, and B. C. Lubow

CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA 2001 ▪ R. N. Randall …

The Process Of Parental Choice In Choosing A General Elementary Program Or A District Magnet Program, Nila Jeannette Nielsen

Student Work

The purpose of this study was to explore the process of parental choice when two educational programs were offered at one building site. This qualitative case study sought to determine if patterns exist in the parental choice process. Three main areas of (1) investigation, (2) decision-making and (3) verification were the focus of the study.

Water Resources Year In Review - Winter 2002, Annis Water Resources Institute

AWRI Reviews

No abstract provided.

December 2002 Commencement Program, Bowling Green State University

Commencement Programs

No abstract provided.

Alignment, Mechanical And Thermo-Physical Characterization Of Nanofiber-Reinforced Polyethylene, Veronica M. Diaz-Serrato

Theses and Dissertations - UTB/UTPA

Alignment of vapor grown carbon nano-reinforced polyethylene composites was performed using conventional extrusion processing methods. The alignment of the nanofibers within polyethylene, PE; the matrix, produced a material with anisotropic behavior. Mechanical and thermo-physical properties of the nanocomposite were studied. Enhancements in mechanical properties were investigated for pure PE, misaligned, and aligned specimens for stress versus strain, maximum load, and Young's modulus as high as 185, 273, and 80%, respectively. In fact, toughness was considerably high for the 10 rpm specimen when compared to other samples of different windup speeds. Thermo-physical studies were performed using differential scanning calorimetry (DSC) and …