Digital Commons Network^™

Long-Term Trophic Shifts Among Fishes After Extensive Modification Of A Southeastern U.S. River System, Matthew E. Roberts

Theses and Dissertations

Regulation of the Upper Tombigbee River and its incorporation into the Tennessee-Tombigbee Waterway has resulted in main-channel flows that differ from the pre-regulation condition. Flows differ in (1) magnitude: higher base flows, damped peak flows, and (2) variability: the river rises and falls faster and the number of reversals has increased. A shift in the trophic ecology of the resident fish assemblage corresponded with the altered hydrology. Assemblage-level trophic plasticity manifested through dietary shifts in species present during both time periods are coupled with changes to the taxonomic structure observed previously. Species representing the contemporary assemblage feed on fewer taxa …

Model Development Of A Polymer Electrolyte Membrane Fuel Cell To Predict Steady And Unsteady Behavior, Bikash Mishra

Theses and Dissertations

Fuel cells are promising technology to meet the energy need of the future. This alternative energy source is clean and efficient, and with the continuous decrease in fossil fuel resources, one of the best bets towards sustaining our power needs. Fuel cells are being used in automobiles as well as to fulfill portable power needs. In this work a computational model has been developed for fuel cells which can be used to simulate traditional as well as passive proton exchange membrane fuel cell behavior. The model is unsteady, two phase, nonisothermal in nature, and also capable of handling natural convection …

Nitrogen Doping In Low Temperature Halo-Carbon Homoepitaxial Growth Of 4h-Silicon Carbide, Kritsa Chindanon

Theses and Dissertations

With the low-temperature halo-carbon epitaxial growth technique developed at MSU prior to this work, use of a halo-carbon growth precursor enabled low-temperature homoepitaxial process for 4H-SiC at temperatures below 1300 °C with good quality. Investigations of the nitrogen doping dependence are reported. It has been demonstrated that the efficiency of the nitrogen incorporation may be different for different substrate orientations, with the Cace showing the higher value of doping. The Si/C ratio is known to influence the doping during the epitaxial growth due to the site-competition mechanism. The doping on the Cace showed weak dependence on the Si/C ratio. On …

Nmr Backbone Chemical Shift Assignments Of The Hvdhfr1:Nadph Binary Complex, Karthikeshwar Vangala

Theses and Dissertations

Extremophiles are the organisms that survive in environments which are inhospitable to other creatures. This thesis made an attempt to understand the enviromental effects, in particular saline, on enzyme structure by using three dimensional NMR. The enzyme DHFR1 from halophile Haloferaxi volcanii is complexed with its coactor NADPH, and the saline effects on the complex are studied by comparison with its apoenzyme, hvDHFR1. Backbone chemical shift assignments of the hvDHFR1:NADPH complex were attained which can be functional (along with future work) in understanding the effect of salts on enzyme structure, function, and flexibility. A total of 27 amino acids were …

Product Formulation And Consumer Acceptability Of Processed Cheese Made With Different Types Of Cocoas And Chocolates & Product Formulation And Quantitative Descriptive Analysis Of Aged Cheddar Cheese With Different Types Of Chocolate Inclusions, Vishal Kumar Royyala

Theses and Dissertations

The objectives of this research were to compare different types of cocoa and chocolates in the formulation of processed chocolate cheese and aged Cheddar cheese, and to evaluate sensory, physical, chemical and quality parameters of each. Four different varieties of chocolates were utilized along with other ingredients to prepare processed chocolate cheeses and were tested for consumer acceptability for their basic and critical attributes. Chocolate chips of four different types and proportions were incorporated into Cheddar cheese curd, ripened for 105 days, and a trained panel evaluated the sensory parameters. Results indicated that processed chocolate cheese made with Bordeaux chocolate …

Professional School Counselor Perception Of Preparedness In Stabilizing A Student In Specific Crisis Situations: A Random Sample Of American School Counselor Association Members, Thomas Allen Fonseca

Theses and Dissertations

This study is an examination of the predictor variables, as measured by a Demographics Questionnaire (DQ) and the Professional School Counselor Perception of Preparedness/Frequency of Specific Crisis Situations Survey (PSCPPFSCSS). The researcher determined the combination of predictor variables that accounted for the greatest amount of variance in professional school counselors’ overall perceptions of preparedness in stabilizing a student in specific crisis situations. Members of the American School Counseling Association were contacted through e-mail and encouraged to access a Web site to complete the DQ and PSCPPFSCSS. A total of 210 participants responded (response rate 23.5%). A stepwise regression analysis was …

Reconfiguration Of Distribution System Using Survivability Index, Bidur Raj Gautam

Theses and Dissertations

Electrical power systems are vulnerable to contingencies due to the possibility of fault or damage. When a serious fault (which cannot be removed immediately) occurs in the power system, the fault needs to be isolated, and the remaining system should be reconfigured to make efficient use of available energy. Reconfiguring the system by making an island can be one of the strategies to continue the energy supply using the remaining generation capacity. By analyzing the effect of contingencies on power systems in terms of voltage support, reliability and stability, survivability of the system can be predicted. A survivability index of …

Experiments And Modeling Of Fatigue And Fracture Of Aluminum Alloys, J Brian Jordon

Theses and Dissertations

In this work, understanding the microstructural effects of monotonic and cyclic failure of wrought 7075-T651 and cast A356 aluminum alloys were examined. In particular, the structure-property relations were quantified for the plasticity/damage model and two fatigue crack models. Several types of experiments were employed to adapt an internal state variable plasticity and damage model to the wrought alloy. The damage model was originally developed for cast alloys and thus, the model was modified to account for void nucleation, growth, and coalescence for a wrought alloy. In addition, fatigue experiments were employed to determine structure-property relations for the cast alloy. Based …

Elucidating The Role Of The Α7 Nicotinic Receptor In The Etiology Of Schizophrenia., Michelle Johnson Chandley

Electronic Theses and Dissertations

The α7 subunit of the nicotinic receptor, a ligand gated ion channel with an affinity for nicotine, has long been implicated in the pathophysiology of schizophrenia due to the extremely high rate of smoking within the patient population. However, the exact role of the receptor has never fully been determined. In the following studies, various functions the receptor may assume in disease state are evaluated. There is a strong relationship between the immune system and schizophrenia, with the α7 subunit possibly serving as the link between the two. One of the following studies looks at the possibility of the receptor …

The State Of Information And Communication Technology (Ict) In Nigerian University Libraries: The Experience Of Ibrahim Babangida Library, Federal University Of Technology, Yola, Benki S.H. Womboh, Tukur Abba

Library Philosophy and Practice (e-journal)

This paper gives an overview of the state of the ICT in Nigerian university libraries and traces the development and management of ICT facilities in the Federal University of Technology of Technology Yola library. Some problems militating against proper functioning of such facilities are highlighted and suggestion for possible solutions proffered.

“Viva El Peru” Take Two Cal Poly Wheelchair Foundation’S Art Show On Display At Pac Jan 8, Public Affairs Office

Press Releases

No abstract provided.

Volume 44 - Issue 10 - Friday, December 12, 2008, Rose Thorn Staff

The Rose Thorn Archive

The Rose Thorn, Rose-Hulman's independent student newspaper.

Reporter - December 12th 2008, Rit Reporter Staff

University Publications

No abstract provided.

The New Hampshire, Vol. 98 [99], No. 24 (Dec. 12, 2008), The New Hampshire

The New Hampshire Print Edition

An independent student produced newspaper from the University of New Hampshire. This volume was printed as 98, but it is the 99th volume in the series. This was corrected in pencil.

2008 Fall Commencement Program: Winona State University, Winona State University

WSU Commencement Programs

This is the Winona State University Fall 2008 commencement program. Commencement was on Friday December 12, 2008.

Order On Motions To Dismiss (Rlp Holdings, Lp), Alice D. Bonner

Superior Court of Fulton County: Metro Atlanta Business Case Division Opinions

No abstract provided.

Newscope - December 12, 2008

Newscope

No abstract provided.

Fall 2008 Commencement Program, University Of Alabama In Huntsville

Commencement Programs

No abstract provided.

Search For Third Generation Scalar Leptoquarks Decaying Into ΤB, V. M. Abazov, Kenneth A. Bloom, Gregory Snow, D0 Collaboration

Kenneth Bloom Publications

We have searched for third generation leptoquarks (LQ₃) using 1.05 fb^-1 of data collected with the D0 detector at the Fermilab Tevatron Collider operating at √s = 1.96 TeV. We set a 95% C.L. lower limit of 210 GeV on the mass of a scalar LQ₃ state decaying solely to a b quark and a τ lepton.

Increasing The Performance Of The Tangential Vector Finite Element Method By Utilizing A Graphics Processing Unit As A Parallel Coprocessor, Maxwell U. Woolsey

Electronic Theses and Dissertations

No abstract provided.

Combinatorial Genericity And Minimal Rigidity, Ileana Streinu, Louis Theran

Computer Science: Faculty Publications

A well studied geometric problem, with applications ranging from molecular structure determination to sensor networks, asks for the reconstruction of a set P of n unknown points from a finite set of pairwise distances (up to Euclidean isometries). We are concerned here with a related problem: which sets of distances are minimal with the property that they allow for the reconstruction of P, up to a finite set of possibilities? In the planar case, the answer is known generically via the landmark Maxwell-Laman Theorem from Rigidity Theory, and it leads to a combinatorial answer: the underlying structure of such a …

Florida Sentinel Bulletin, December 12, 2008, Gwen Hayes

Florida Sentinel Bulletin Collection

The December 12, 2008, issue of the Florida Sentinel Bulletin.

State, Ex Rel. Wasden V. Maybee Appellant's Reply Brief Dckt. 35200

Idaho Supreme Court Records & Briefs, All

No abstract provided.

State V. Allen Clerk's Record V. 1 Dckt. 35497

Idaho Supreme Court Records & Briefs, All

No abstract provided.

Wmu Board Of Trustees Formal Session December 12, 2008, Wmu Board Of Trustees

WMU Board of Trustees Meetings

Minutes of the WMU Board of Trustees meeting include appendices:

• Remarks by the Chair
• Remarks by the President
• Remarks by the WSA President and the GSAC Chair
• Presidential Evaluation/Compensation Recommendation

Physiological Correlates Of Aggression In Adolescent Females, Ashley Dibble

Theses and Dissertations

Recently, with the development of new technology, researchers have focused on physiological predictors of aggressive behavior, specifically cortisol and alpha amylase. Gordis, Granger, Susman, and Trickett (2006) found the interaction between cortisol and alpha-amylase significantly predicted parent reports of aggression indicating that low levels of physiological reactivity was associated with higher levels of problem behavior. While this research has provided valuable information about aggressive behavior, a major limitation is the majority of research focuses on males, or has not examined gender differences explicitly. This study expanded on work by Gordis et al. (2006) and other researchers on the HPA axis …

Fall 2008 Commencement Ceremonies, University Of North Florida

Commencement Printed Materials

Program for the Fall Commencement ceremonies.

The Role Of Image Resolution To Locomotion Tasks In Virtual Desktop Wayfinding, Lisa Dawn Anderson

USF Tampa Graduate Theses and Dissertations

An experimental study at a large research university evaluated the role of image resolution on 60 participant's locomotion tasks in an interior virtual desktop wayfinding environment. Four virtual environments were developed using different resolutions for wayfinding images including high level 150 ppi, medium high level 100 ppi, medium level 75 and low level 30 ppi images. The environment was designed to accommodate forward, backward, sideways and figure 8 locomotion tasks as defined by the VEPAB. The effects of the different image resolutions on time-on-task performance scores to navigate through the environment, object-based visual attention as recorded by two eye movements …

Sharing The Power Of Words And Changing Lives Through College-Level Instruction In Grammar And Mechanics, Carol Ann Tillema

USF Tampa Graduate Theses and Dissertations

Intrigued by the English language and its far-reaching applications worldwide as a standard means of communication, I begin my disquisition with a focus on the meaning and derivation of grammar and its place in the trivium of ancient and modern study. I stress the need to reemphasize college-level instruction in grammar and mechanics as a complement to rhetoric and logic by studying and teaching editing, which involves semantics, syntax, phonology, morphology, conventions, mechanics (spelling, punctuation and format), in writing centers and classrooms. Noting growing nationwide illiteracy, I research the pedagogies and writing of experts in the field of rhetoric and …

A Cost-Benefit Analysis Of Leak Detection And The Potential Of Real Water Savings For New Mexico Water Systems, Shawn Hardeman

Water Resources Professional Project Reports

Whereas the demand for safe drinking water increases and the availability of fresh drinking water decreases, it becomes evermore important for water systems to make effective use of the drinking water they produce. As populations grow water systems are increasingly in search of new water sources; however, as the competition for new water sources increases, water systems must look at how water is lost in their distribution systems. Water that never makes it to the consumer, or for which no revenue is received is known as water loss,' and is used to represent the water that a water system produces, …