Digital Commons Network^™

Effects Of Ultraviolet Radiation On Attached Diatom Growth And Distribution, Heather Lynn Emsley Hatsell

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.

Service-Learning And Evaluation: A Brief Review Of Issues And The Literature, Madeleine S. Hengel, Robert D. Shumer

Bibliographies

One of the most frequently requested topics for information at the National Service-Learning Cooperative Clearinghouse is evaluation. Practitioners want to know what to do and how to do it. Graduate students want to know what has been done and how they can do evaluation. Program administrators want to know how evaluation can assist them in making the case for and expanding service programs.

The good news is there is more than enough information available to answer all these requests. There are literally volumes of work on almost every conceivable aspect of evaluation. The bad news: There is too much information …

University Of Central Florida Graduate Catalog, 1997 - 1998, University Of Central Florida

UCF Catalogs

No abstract provided.

Annual Report Of Research And Creative Productions By Faculty And Staff From January To December, 1997., Office Of Research And Sponsored Programs. Morehead State University.

Office of Research and Sponsored Programs Reports and Publications

Annual Report Of Research and Creative Productions by Faculty and Staff from January to December, 1997.

The Probability Density Function Of Ocean Surface Slopes And Its Effects On Radar Backscatter, Y. Liu, Xh Yan, W.T. Liu, P.A. Hwang

Faculty Publications

Based on Longuet-Higgins's theory of the probability distribution of wave amplitude and wave period and on some observations, a new probability density function (PDF) of ocean surface slopes is derived. It is f(zeta(x), zeta(y)) = n/2 pi(n - 1)sigma(u) sigma(c) x [1 + zeta(x)(2)/(n - 1)sigma(n)(2) + zeta(y)(2)/(n - 1)sigma(c)(2)](-(n + 2)/2) + skewness, where zeta(x) and zeta(y) are the slope components in upwind and crosswind directions, respectively; sigma(u)(2) and sigma(c)(2) are the corresponding mean-square slopes. The peakedness of slopes is generated by nonlinear wave-wave interactions in the range of gravity waves. The skewness of slopes is generated by nonlinear …

Dephasing In Hyper-Rayleigh Scattering From Organic Materials, S. F. Hubbard, Rolfe G. Petschek, Kenneth D. Singer

Faculty Scholarship

The spectral content of hyper-Rayleigh scattering (HRS) was studied with solutions of disperse red-1 (DR1) in acetone at a specific fundamental wavelength. Dephasing can occur when the effective lifetime of the virtual state approaches a two-photon resonance. Experiments were developed that will measure all six observables in HRS by observing the scattering at 45°, continuously varying the phase of the fundamental by rotating a quarter-waveplate, and using another quarter-waveplate with a linear polarizer to analyze the harmonic. These experiments proved the validity of Kleinmann symmetry in near-resonant and far off-resonant regimes.

A Robust Unit Commitment Algorithm For Hydro-Thermal Optimization, Chao-An Li, Chung-Li Tseng, E. Hsu, R. B. Johnson, A. J. Svoboda

Engineering Management and Systems Engineering Faculty Research & Creative Works

This paper presents a unit commitment algorithm which combines the Lagrangian relaxation (LR), sequential unit commitment (SUC), and optimal unit decommitment (UD) methods to solve a general hydro-thermal optimization (HTO) problem. The authors argue that this approach retains the advantages of the LR method while addressing the method''s observed weaknesses to improve overall algorithm performance and quality of solution. The proposed approach has been implemented in a version of PG&E''s HTO program, and test results are presented.

Homework Behavior Interventions Used With Learning Disabled Junior High School Students: A Comparative Study, Naomi M. Cressman

Theses and Dissertations

A three phase integrated intervention of study skills and work habits direct instruction, use of a self-monitoring device where all homework information and its completion was recorded, and a modified behavior management using self-selected extrinsic rewards was implemented. The sample for this study was three sixth grade learning disabled students serviced in a resource center. The purpose of this study was to determine which, if any, of these interventions would produce a positive effect in the ability of these students to complete independent tasks. While each of the interventions did bring about an improved homework completion rate, it was determine …

Putting The Pieces Together: Understanding Robinson’S Nonperiodic Tilings, Aimee S. A. Johnson, K. M. Madden

Mathematics & Statistics Faculty Works

A discussion of Robinson's nonperiodic tilings and nonperiodic tilings with nonsquare tiles (Penrose and pinwheel).

A Study To Determine The Effects Of Nild Educational Therapy On Standardized Test Results And Classroom Performance, Deborah A. Dower

Theses and Dissertations

The purpose of this study is to determine if the gains evidenced on standardized tests as a result of intensive intervention using the NILD educational therapy model are reflected in functional classroom performance. Twenty-two students who had been diagnosed as learning disabled and enrolled in the NILD educational therapy program participated in this study. Pre- and post-test measures on standardized tests were compared to determine progress of the students in the NILD program. Report cards were analyzed to determine progress in grade point averages in language and mathematics. In addition, information was gathered through initial test reports and anecdotal records …

Preferred Lightness And Chromatic Image Contrast Reproduction, Mihai Cuciurean-Zapan

Theses

In this study, the image preference as a function of lightness and chromatic contrast of images produced on an ink-jet printer is examined. The purpose is to develop image manipulation rules, useful in the development of printer algorithms to produce images that are preferred by viewers over images that have been printed without application of these rules. Five images are used during the psychophysical experiment, two business graphics and three pictorial, processed in three different ways in RLAB color space, once having only the tightness contrast varied, then only the chromatic contrast, and finally both lightness and chromatic contrast varied. …

The Relationship Of Learning Modality And The Use Of Mathematical Manipulatives In Adult Beginning Algebra., Pamela J. Mooney

Student Work

The purpose of this study was to determine the relationship of learning modality and the use of manipulatives in adult beginning algebra. Four elementary algebra classes were involved in an eleven week quarter study that used a modified A-B-A-B research design. All subjects were tested in a series of research phases where manipulative based instruction was alternately implemented and withdrawn. All instruction focused on meeting regular class objectives with the addition of manipulatives to treatment phases of the study. During both the treatment and non treatment phases, student questions were answered as asked. The learning modality preferences of the students …

Edison Communicator Volume Two; Number Ten, Edison Community College

Edison Communicator

Edison Communicator: A Publication for the Faculty, Staff and Friends of Edison Community College.

Bulletin 4328 - Soil Testing For Vegetable Production On The Coastal Plain, Ian Mcpharlin, Murray Hegney

Bulletins 4000 -

Vegetable growers need to use fertiliser efficiently. Under-fertilising can reduce yield, which results in economic losses. Over-fertilising can reduce yield and contribute to nitrogen and phosphorus pollution of ground and surface waters. Concerns have been expressed that fertilisers applied to horticultural crops contribute to the phosphorus pollution of the rivers and estuaries of the west and south coast of Western Australia.

Soil testing is a technique that can be used by growers to make better fertiliser decisions. When soil tests show high levels of nutrients, growers can reduce fertiliser application for the current crop. This should enable growers to maintain …

Valve Train Natural Frequency Measurement And Analysis, Cynthia Greene

Theses

Natural frequencies are very important characteristics of a valve train system. From the measured natural frequencies of a valve train the following can be determined: will the system have acceptable dynamic behavior, is one valve train system design superior to another, and is a dynamic model of the system properly setup. The three most important modes of vibration of a valve train system are the fundamental mode of vibration of the entire linkage (system natural frequency), translation of the valve spring, and torsion of the camshaft. Valve trains are nonlinear systems due to varying system geometry throughout the lift event. …

Microevolution In Island Water Snakes, Richard B. King, R. Lawson

Faculty Articles, Papers, and Other Scholarship

Examples presented demonstrate that evolutionary outcomes depend not only on those processes that operate within populations(e,g.,selection) but also on interactions (via gene flow) among populations. Factors affecting rates of gene flow are likely to produce evolutionary change even when within-population processes remain constant. These examples also illustrate that the combined effects of selection and gene flow are not restricted to organisms found on islands like those in western Lake Erie but may be important in any organism whose distribution spans a range of habitat types. As human activities produce changes in habitat characteristics and distribution (e.g., by fragmenting formerly continuous …

Depiction Of Portraiture, Likeness Vs. Representation, Mario Guarriello

Theses

So the dreaded 'Thesis Paper' begins. I hope this paper can help you, the reader, understand the thought process behind this body of work. I have always felt that my artwork should stand on its own legs, unsupported by flowery, artspeak. This body of work is completely different from anything I have attempted before. This paper is as much an experiment as the work itself. I have divided this paper into three major sections; Looking Back, The Thesis Itself & Looking Ahead. I have found that this thesis has not only become about the last year, but my career as …

Native Vegetation On Farms Survey 1996 : A Survey Of Farmers Attitudes To Native Vegetation And Landcare In The Wheatbelt Of Western Australia, Suzanne Jenkins

Resource management technical reports

The Native Vegetation on Farms survey 1996 was performed to assess the attitudes of farmers to a number of issues related to existing native vegetation on farmland, the replanting of vegetation on farms and land degradation. Research has shown that it is important for a proportion of all farmland to have some native vegetation for ecological stability, to regulate hydrological processes and for long-term sustainability of farm production.

Parallel Ellpack 3-D Problem Solving Environment, Vassilios Verykios, Elias N. Houstis

Department of Computer Science Technical Reports

No abstract provided.

Parametric Kinematic Tolerance Analysis Of General Planar Systems, Elisha Sacks, Leo Joskowicz

Department of Computer Science Technical Reports

No abstract provided.

Solving Composite Problems With Interface Relaxation, Mo Mu, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.

Timestamp Based Approach For The Detection And Resolution Of Mutual Conflicts In Real-Time Distributed Systems, Sanjay Kumar Madria

Department of Computer Science Technical Reports

No abstract provided.

The Experiencing Of Democracy And Progressive Education: A Constructivist Approach To Mathematics, A Workshop For Teachers, Preminda Langer

Graduate Student Independent Studies

Chronicles the history of schooling in India, discusses the development of the constructivist classroom, and shares a series of math workshops for teachers for nursery and kindergarten classrooms in India.

Channel Narrowing Of The Green River Near Green River, Utah: History, Rates, And Processes Of Narrowing, Tyler M. Allread

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Previous scientific research has documented channel narrowing on the Green River near Green River, Utah, but the exact timing, rates, and causal mechanisms of that narrowing have been the source of disagreement in the scientific literature. This thesis demonstrates that the Green River has narrowed in two separate periods during the last 100 years. The narrowing is driven primarily by changes in the hydrologic regime and not by the invasion of saltcedar. The channel narrowed between 1930 and 1938, when a shift from wetter than normal conditions to a period of draught led to a reduction in river discharge. Channel …

Role Expectation Of Chief Nurse Executive Officers In Integrated Healthcare Systems Located In Highly Managed Care Markets, Daniel L. Gross Dnsc

Dissertations

The healthcare industry is undergoing radical transformation. Healthcare's transformation is characterized by new patterns of organization, alliance, management, administration, and governance. Traditional fee-for-service reimbursement strategies are rapidly dissolving and managed health care is proliferating. Managed care and managed competition are forcing hospitals and healthcare providers to reduce expenses and identify improved methods for healthcare delivery. Integrated healthcare delivery systems (IDSs) and networks are at the center of healthcare reform. Chief Nurse Executive Officers (CNEOs) are increasingly finding themselves in roles within complex IDSs located within highly managed care markets (HMCMs). This new work environment is altering old and mandating new …

Involving Men In The Church, Dennis Edward Yocum

ATS Dissertations

No abstract provided.

The Synthesis And Evaluation Of Dibromobis[Dihydrobis(Pyrazolyl) Borate]Zirconium(Iv)As A Catalyst In Illinois Number 6 (River King)Coal Liquefaction, Laverne L. Smith

Theses (Pre-2016)

Current interest within the laboratory involves the synthesis and study of transition metal complexes using the poly(pyrazolyl)borates as ligands and to study them further as process catalysts in coal liquefaction. The synthesis of potassium dihydrobis(pyrazolyl)borate with zirconium tetrabromide, in a stoichiometric ratio of 1:2 within a nitrogen filled glove (dry) box, formed the following complex: ZrBr4 + 2 K[H2B(C3H3N2)2] 80mL CH2.Q!2_> ZrBr2[H2B(C3H3N2)2]2 + 2 KBr The dibromobis[dihydrobis(pyrazolyl)borate]zirconium(IV) complex was then characterized using elemental analyses for the percent Carbon, Hydrogen and Nitrogen, Fourier Transform Infrared (FT-IR) and proton (1 H) NMR. This 1 2 complex will be evaluated as a catalyst …

Closed Form Solution Of The Wave Equation For Piles, Don C. Warrington

Masters Theses and Doctoral Dissertations

This thesis details the research into the one-dimensional wave equation as applied to piles used in the support of structures for civil works and driven using impact equipment. Since the 1950's, numerical methods, both finite difference and finite element, have been used extensively for the analysis of piles during driving and are the most accepted method of analysis for the determination of driving stresses, dynamic and static resistance of piles. In this thesis the wave equation is solved in a relatively simple closed form without recourse to numerical methods. A review of past efforts to solve the wave equation in …

University Of Central Florida Undergraduate Catalog, 1997 - 1998, University Of Central Florida

UCF Catalogs

No abstract provided.

Factors Affecting Use Of E-Mail By Public School Principals Of The Central Appalachian Region, Micheal T. Carter

Electronic Theses and Dissertations

The purposes of this study were to determine the factors that influence the use of e-mail by principals, the purposes for which e-mail messages were sent and received, and the impact of experience and training in the areas of computers and e-mail. A survey was sent to a stratified random sample of 620 elementary, middle/junior high, and high school principals of the Central Appalachian Region. Respondents were asked to provide data regarding demographics, accessibility to hardware and software, computer and e-mail experience and training, uses of e-mail, and items that influence e-mail use. Eleven research questions and 10 hypotheses were …