Digital Commons Network^™

Digital Reconstruction Of A Ceratopsid Pes, Ken Conrad Noriega

Theses Digitization Project

A complete and fully articulated right pes of a centrosaurine ceratopsid from the Dinossaur Park Formation of Alberta, Canada provides important information regarding the structure and function of the pelvic limb in this group. A reconstructed centrosaurine foot with all data coming directly from actual specimens could be accurately modeled in three-dimensional morphospace and provide the basis of a digital atlas of the elements.

Propagation And Generation Of Waves In Solar Atmosphere, Swati Routh

Physics Dissertations - Archive

The fact that the temperature increases with height in the solar atmosphere has been known for many years. To maintain this temperature increase, sources of heating must be present in the atmosphere. One of the most important, and still unsolved, problems in solar physics is to identify the basic physical processes that are responsible for this heating, and explain solar activities caused by the heating. It is also observationally well-established that the solar atmosphere shows a broad range of oscillations that are different in magnetic and non-magnetic regions of the atmosphere.The oscillations are driven by propagating waves, which cause the …

Theoretical Study Of Electronic Properties Of The Cu(001) Surface Under Conditions Of High Coverage Oxidation, Willie Burton Maddox

Physics Theses - Archive

The study of adsorption of oxygen on transition metal surface is important for the understanding of oxidation, heterogeneous catalysis, and metal corrosion. The structures formed on oxidized transition metal surfaces vary from simple adlayers of chemisorbed oxygen to more complex structures which result from the diffusion of oxygen into sub-surface regions. In this thesis, an textit{ab-initio} investigation of stability and associated physical and electronic properties of different adsorption phases of oxygen on Cu(001) as well as of the clean Cu surfaces using density functional theory in the generalized gradient approximation, is presented. All surface geometries are fully optimized. Results of …

Report, Collection Assessment: Education, 2009, University Of South Florida St. Petersburg. Nelson Poynter Memorial Library

All-Library Assessments Reports, Summaries & Misc Reports

A report for the National Council for Accreditation of Teacher Education (NCATE) on library collections and instructional support for College of Education students.

The Effect Of Dielectric Friction On The Rate Of Charge Separation In Type Ii Znse/Cds Semiconductor Nanorods, Alexander N. Tarnovsky, Nishshanka N. Hewa-Kasakarage, Patrick Z. El-Khoury, Nickolas Schmall, Maria Kirsanova, Alexander Nemchinov, Alexey Bezryadin, Mikhail Zamkov

Chemistry Faculty Publications

The effect of dielectric friction on the rate of charge separation in type II ZnSe/CdS semiconductor nanorods has been investigated using picosecond transient absorption spectroscopy. The spatial separation of an excited electron-hole pair was estimated from the redshift in band edge absorption corresponding to the decrease in the exciton binding energy. The present study identifies a considerable effect of the solvent polarity on the rate of charge separation in semiconductor heterostructures, which should be taken into account when selecting nanorod caging media, such as solvents or polymer matrices. © 2009 American Institute of Physics.

On The Sensitivity To Noise Of A Boolean Function, Mihaela Teodora Matache, Valentin Matache

Mathematics Faculty Publications

In this paper we generate upper and lower bounds for the sensitivity to noise of a Boolean function using relaxed assumptions on input choices and noise. The robustness of a Boolean network to noisy inputs is related to the average sensitivity of that function. The average sensitivity measures how sensitive to changes in the inputs the output of the function is. The average sensitivity of Boolean functions can indicate whether a specific random Boolean network constructed from those functions is ordered, chaotic, or in critical phase. We give an exact formula relating the sensitivity to noise and the average sensitivity …

One More Decidable Class Of Finitely Ground Programs, Yuliya Lierler, Vladimir Lifschitz

Computer Science Faculty Proceedings & Presentations

When a logic program is processed by an answer set solver, the first task is to generate its instantiation. In a recent paper, Calimeri et el. made the idea of efficient instantiation precise for the case of disjunctive programs with function symbols, and introduced the class of “finitely ground” programs that can be efficiently instantiated. Since that class is undecidable, it is important to find its large decidable subsets. In this paper, we introduce such a subset—the class of argumentrestricted programs. It includes, in particular, all finite domain programs, ω-restricted programs, and λ-restricted programs.

Knowledge Management And Organizational Learning, William R. King, Sajda Qureshi, Mehruz Kamal, Peter Keen

Faculty Books and Monographs

Editor: William R. King

Chapter, Knowledge Networking to Overcome the Digital Divide, co-authored by Sajda Qureshi, UNO faculty member.

As organizations become increasingly extended across global boundaries, their reliance on information and communication technologies (ICTs) to support their processes increases. The use of ICTs to activate dispersed knowledge within complex webs of human networks can enable the gap between the information rich and information poor to be overcome. This paper develops a new concept called knowledge networking and investigates how this process enables the digital divide to be overcome. Following a phenomenological analysis of knowledge networking using a selection of …

Design Of Novel Anticancer Drugs Utilizing Busulfan For Optimizing Pharmacological Properties And Pattern Recognition Techniques For Elucidation Of Clinical Efficacy, Ronald Bartzatt

Chemistry Faculty Publications

Chronic myelogenous leukemia (CML) is a disorder in which an excessive number of blood stem cells develop into the white blood cell group called granulocytes. The anticancer drug Busulfan is a cell cycle non-specific alkylating agent which is utilized to maintain white blood cell counts below 15000 cells/microliter. The side effects induced by busulfan are significant and affirms the intimation for new drug constructs. Fifteen analogous compounds were generated from the molecular structure of busulfan . These compounds retain the double methanesulfonate functional groups descriptive of this class of alkylating anticancer drugs. However, the carbon chain substituent separating the methanesulfonate …

Effects Of Service-Learning On Student Attitudes Toward Academic Engagement And Civic Responsibility, Larry Joseph Moss

Thesis, Dissertations, Student Creative Activity, and Scholarship

This empirical study explored the impact of service-learning participation on high school students' attitudes toward academic engagement and civic responsibility. This study focused whether a group of high school students who participated in a service-learning project had more positive attitudes toward academic engagement and civic responsibility than their high school peers who did not participate in a service learning project.

20 Exemplary Service-Learning Projects, Chicago Public Schools Service-Learning Initiative

Project Summaries

In 1998, Chicago Public Schools became the largest school district in the country to require that students do service to their community as a graduation requirement. Since that time, hundreds of thousands of students have provided millions of hours of service to Chicago's neighborhoods and communities.

The Effects And Perceived Consequences Of Testing Accommodations On Math And Science Performance Assessments, Stephen N. Elliott, Thomas R. Kratochwill, Brian Mckevitt, Christine Kerres Malecki

Psychology Faculty Publications

The present study examined the effect accommodations have on test results of students with and without disabilities and documented experts’ judgments about the appropriateness of testing accommodations. Test score data were collected from 218 fourth-grade students with and without disabilities on mathematics and science performance tasks and from eight testing experts who evaluated the fairness and validity of a sample of testing accommodations used with these students. Results indicated that, for most students with disabilities and some students without disabilities, packages of testing accommodations had a moderate to large effect on performance task scores. Expert reviewers rated most accommodations for …

Completions 2009-10, Uno Office Of Institutional Effectiveness

IPEDS Completions

IPEDS Completions annual report contains the following information:

• Number of awards conferred by program, by level, and by race/ethnicity and gender of recipient
• Number of completers, separately by race/ethnicity, gender, age and level of award

How Can Information And Communication Technology Bring About Development? An Information Architecture For Guiding Interventions In Developing Regions, Mehruz Kamal, Sajda Qureshi

Information Systems and Quantitative Analysis Faculty Proceedings & Presentations

While a great deal is known about how Information and Communication Technologies are used in developing and underserved communities, there are still gaps as to how ICTs may enable development outcomes to be achieved. It appears that the majority of businesses in developing regions are micro-enterprises which employ between 1-5 people and face challenges of limited resources. This research investigates what is known about how ICTs bring about development and uses these insights to develop an information architecture adapted from the Zachman Framework that integrates the different perspectives. In this research, the key stakeholders are the micro-entrepreneurs who adopt technology …

Effective Teaching, Karen Pickles Taylor

Electronic Theses and Dissertations

This study examined the characteristics of nine teachers considered effective by their school administrators. Qualitative methodology was used to examine characteristics of effective teachers in three Colorado public high schools. Data was collected through observations and interviews and examined through the lens of Elliot Eisner's educational criticism and connoisseurship. Through in-depth interviews, these effective teachers identified and interpreted experiences that have contributed to them being considered "effective" teachers: Personal Experiences, Motivational Techniques, Obstacles They Overcame, and Skills They Now Posesss as "Effective Teachers". Conclusions were as follows: The common characteristics the teachers shared were preparedness, caring, collaboration, and reflection.

Nepa And The Dynamics Of Public Participation In The Environmental Review Process: An Analysis Of The Northmet (Polymet) Mining Project Near Hoyt Lakes Minnesota, Amber Neumann

Political Science Theses and Capstones

Hypothesis: That comments collected from agency “experts” during the scoping phase of the National Environmental Policy Act (NEPA) process would be disproportionately represented as changes in subsequent drafts of NorthMet’s Environmental Impact Statement (EIS).

Methods: Tabular analysis of data collected from the Minnesota DNR publication of Response to the Public Scoping Projects PolyMet Mining Inc.; NorthMet Project. 2005

Results: There is an excellent cross section of comment sources represented in changes to subsequent drafts of NorthMet’s EIS. A lot of overlap exists between various types of participants and their concerns, resulting in many of the successful comments stemming from …

“Yet More Spacious Space”: Higher-Dimensional Imagination From Flatland To Lilith, Jeffrey Bilbro

North Wind: A Journal of George MacDonald Studies

No abstract provided.

Modeling Of The Interior Electric Field In Photovoltaic Cells, Tara Jeatran

The Journal of Undergraduate Research

With the emergence of photovoltaic technologies, there is a strong technological demand for high-performance photovoltaic devices. One of the most promising device concepts developed at SDSU is organic-based photovoltaic cells. The performance of the PV cells is controlled by charge generation and charge separation, and charge transportation processes. Extraordinary control over the properties of the organic photovoltaic materials will be needed in order for this research to succeed. Therefore, the interior electric field and the macro electric properties of the system are the foundation behind these facts and are critical properties on their performance. In this paper, the fundamentals of …

A Longitudinal Analysis Of The Vocalic Nucleus In Modern Russian, Brett Alan Benham

Linguistics & TESOL Dissertations - Archive

This instrumental acoustic study investigates coarticulation as the source of palatalization in Modern Standard Russian. This study posits that the nucleus is bifurcated, with nodes for a pre-kernel and a kernel. At the initial edge of a stressed vowel, coarticulation between the pre-kernel and the kernel creates the distinctive onset, attributed to preceding palatalized environments. At the terminal edge of a stressed vowel, coarticulation between the kernel and the next vocalic segment (the offglide, or the pre-kernel of the following syllable) creates the distinctive offset, attributed to following palatalized environments. In unstressed syllables, the kernel vowel is deleted, and the …

Analysis And Simulation In Neuron And Fibrosis Models, Humberto D. Perez Gonzalez

Mathematics Dissertations - Archive

In this work, we use analysis and numerical simulations to study the change of collective behaviorof two synaptically coupled square bursting systems, the effect of noise inan elliptic bursting system and foreign body reactions.For the square bursters we study its synchronization process as the strength ofcoupling increases. The two cells present chaotic bursting behaviorwhen there is no coupling. As the strength increases and past a certain value,the behavior of two cells, which are uncoupled, becomes synchronized regular burstingmotions. For the elliptic bursting phenomenon we study the distribution of the noise and its effects in the dynamics and the reliability of …

Testing The Equality Of Regression Coefficients And A Pooling Methodology From Multiple Samples When The Data Is Multicollinear, Fransell Riley

Mathematics Dissertations - Archive

Testing the equality of regression coefficients between two regression equations is a common practice in statistics today. The theory and methods are sufficiently developed under ordinary least squares (OLS) estimation. However, there is no method for conducting such tests when OLS estimation is not an appropriate method. For example, when multicollinearity exists in the data.Therefore, there is a need for a method to test the equality of regression coefficients when the data is multicollinear. In this research, we will present methods for conducting such a test using ridge regression coefficient estimators and principal component estimators. We will also present a …

A Globally Convergent Numerical Method For Coefficient Inverse Problems, Natee Pantong

Mathematics Dissertations - Archive

In our terminology "globally convergent numerical method" means a numerical method, whose convergence to a good approximation for the correct solution is independent of the initial approximation. A new numerical imaging algorithm of reconstruction of optical absorption coefficients from near infrared light data with a continuous-wave has been purposed to solves a coefficient inverse problem for an elliptic equation with the data generated by the source running along a straight line. A regularization process, so-called "exterior forward problem", for preprocessing data with noise on the boundary has also been purpose for the problem related to matching fluid in experiment. A …

2009 Legislative Briefing Book, Nevada Institute For Children’S Research And Policy, Unlv, School Of Public Health, The Children’S Advocacy Alliance, Southern Nevada Area Health Education Center, Denise Tanata Ashby, Amanda Haboush, Tara Phebus, Jennifer Waddoups

Nevada Institute for Children's Research and Policy Reports

The purpose of the Nevada Institute for Children’s Research and Policy (NICRP) Legislative Briefing Book is to provide a quick snapshot of some of the most pressing issues facing Nevada’s children in order to provide advocates and policymakers with a stepping stone in creating positive changes to improve the lives of Nevada’s children. While this book will not cover every issue facing our children, it is intended to highlight those of greatest concern, covering issues in education, health, safety and security, and the juvenile justice system. Diligent efforts need to be made during the 2009 Legislative Session to improve policies, …

Reduction Of Model Order Based On Proper Orthogonal Decomposition For Lithium-Ion Battery Simulations, Long Cai, Ralph E. White

Faculty Publications

A reduced-order model (ROM) is developed using proper orthogonal decomposition (POD) for a physics-based lithium-ion battery model. The methodology to obtain the proper orthogonal modes and to analyze their optimality is included. The POD-based ROM for a lithium-ion battery is used to simulate a charge/discharge process and the behavior of a battery pack. Compared to the physics-based model, the computational time to solve the ROM is significantly less, and the two models show excellent agreement.

Simulation Of Reduction Of Cr(Vi) By Fe(Ii) Produced Electrochemically In A Parallel-Plate Electrochemical Reactor, Sean Rayman, Ralph E. White

Faculty Publications

A model is presented for the reduction of hexavalent chromium in a parallel-plate electrochemical reactor via a homogenous reaction between Cr(VI) and Fe(II) generated at the iron anode. The effects of the space velocity of the feed solution, the concentration of supporting electrolyte, the distance between the electrodes, and the cell potential on conversion of Cr(VI) to Cr(III), are discussed. This study indicates that for reduction of Cr(VI) using Fe(II), the space velocity must be maintained below 0.02s⁻¹ or the system becomes limited by the rate of reduction of Cr(VI) by Fe(II). Increasing the current density by increasing the …

Effect Of Water Transport On The Production Of Hydrogen And Sulfuric Acid In A Pem Electrolyzer, John A. Staser, John W. Weidner

Faculty Publications

The thermochemical cycle involving the interconversion between sulfur dioxide and sulfuric acid is a promising method for efficient, large-scale production of hydrogen. A key step in the process is the oxidation of sulfur dioxide to sulfuric acid in an electrolyzer. Gaseous SO₂ fed to a proton exchange membrane (PEM) electrolyzer was previously investigated and was shown to be a promising system for the electrolysis step. A critical factor in the performance of this gas-fed electrolyzer is the management of water since it: (i) is needed as a reactant, (ii) determines the product sulfuric acid concentration, …

Atp-Dependent Unwinding Of U4/U6 Snrnas By The Brr2 Helicase Requires The C Terminus Of Prp8, Corina Maeder, A. K. Kutach, C. Guthrie

Chemistry Faculty Research

The spliceosome is a highly dynamic machine requiring multiple RNA-dependent ATPases of the DExD/H-box family. A fundamental unanswered question is how their activities are regulated. Brr2 function is necessary for unwinding the U4/U6 duplex, a step essential for catalytic activation of the spliceosome. Here we show that Brr2-dependent dissociation of U4/U6 snRNAs in vitro is activated by a fragment from the C terminus of the U5 snRNP protein Prp8. In contrast to its helicase-stimulating activity, this fragment inhibits Brr2 U4/U6-dependent ATPase activity. Notably, U4/U6 unwinding activity is not stimulated by fragments carrying alleles of prp8 that in humans confers an …

Promoting Self-Determination For Students With Emotional And Behavioral Disorders, David J. Landers

Education Masters

Students with emotional disturbance (ED) oftentimes feel as though their ideas and opinions are ignored or not taken seriously. Unfortunately, they are often justified in feeling this way. As ED students have some of the highest dropout rates in the United States, it should be our goal as educators to do whatever is necessary to keep them in school and help them to succeed. Using these students' naturally strong will seems the best method of doing this. Allowing them to have some power over their own education may help to assuage their feeling of powerlessness. Yet how do we promote …

Diversity Graphs, P Blain, C Davis, Allen G. Holder, J Silva, C Vinzant

Mathematics Faculty Research

Bipartite graphs have long been used to study and model matching problems, and in this paper we introduce the bipartite graphs that explain a recent matching problem in computational biology. The problem is to match haplotypes to genotypes in a way that minimizes the number of haplotypes, a problem called the Pure Parsimony problem. The goal of this work is not to address the computational or biological issues but rather to explore the mathematical structure through a study of the underlying graph theory.

What Is Diplograptus?, Charles Mitchell, Jörg Maletz, Daniel Goldman

Department of Earth, Environment and Sustainability Faculty Publications

Diplograptus pristis (Hisinger, 1837) is the type species of the genus Diplograptus and name bearer for suborder Diplograptina. This species is primarily known from the Dalarne region of Sweden, where it occurs in the P. linearis Zone. D. pristis exhibits a suite of features (particularly the shape of the proximal end, the configuration of proximal spines, and the gradient in thecal form) that is uniquely shared with a number of other late Katian and earliest Hirnantian species including Glyptograptus nicholsoni Toghill, 1970; Glyptograptus posterus Koren’ & Tzai (in Apollonov et al. 1980); Orthograptus maximus Mu, 1945; and Orthograptus truncatus rarithecatus …