Physical Sciences and Mathematics Commons^™

Tenth Kenneth C. Schraut Memorial Lecture (Poster), University Of Dayton. Department Of Mathematics

Kenneth C. Schraut Memorial Lectures

No abstract provided.

Nuclear Resonances: The Quest For Large Column Densities And A New Tool, J. Greiner, S. Boggs, G. Dicocco, K. T. Freese, N. Gehrels, Dieter H. Hartmann, A. Iyudin, G. Kanbach, A. A. Zdziarski

Publications

Nuclear physics offers us a powerful tool: using nuclear resonance absorption lines to infer the physical conditions in astrophysical settings which are otherwise diffcult to deduce. Present-day technology provides an increase in sensitivity over previous gamma-ray missions large enough to utilize this tool for the first time. The most exciting promise is to measure gamma-ray bursts from the first star(s) at redshifts 20–60, but also active galactic nuclei are promising targets.

Investigation Of The Light Induced Redistribution Of Beta Nanoparticles In An Acrylamide-Based Photopolymer, Elsa Leite, Izabela Naydenova, Nitesh Pandey, Tzvetanka Babeva, G. Majano, Svetlana Mintova

Articles

We report the redistribution of colloidal zeolite Beta nanoparticles during holographic recording in acrylamide-based photopolymers. Using the techniques of confocal Raman spectroscopy and scanning electron microscopy coupled with energy dispersive x-ray analysis (SEM–EDX), we have observed a periodic pattern, whose spacing agrees with the fringe spacing of the recorded holographic diffraction grating. It was estimated that the fraction of nanoparticles redistributed as a result of the holographic recording is 40%. The effect of the nanoparticles on the average refractive index of the nanocomposite layers was studied by UV–visible spectroscopy. It was observed that the addition of zeolite nanoparticles leads to …

Imaging Reconstruction For Light Scattering From A Tenuous Random Medium, Jonathan Blackledge

Conference papers

We consider the basis for describing strong scattering in terms of diffusive processes based on the diffusion equation. Intermediate strength scattering is then considered in terms of a fractional diffusion equation which is studied using results from fractional calculus. This approach is justified in terms of the generalization of a random walk model with no statistical bias in the phase to a random walk that has a phase bias and is thus, only `partially' or `fractionally' diffusive. A Green's function solution to the fractional diffusion equation is studied and a result derived that provides a model for an incoherent image …

Extraction Of Hydrocarbons And Minimizing Organic Deposits From Crude Oil Using Carbon Dioxide, Adel Adib Azzam

Theses

Supercritical fluid extraction (SFE) technology is a new and powerful separation process, which has several applications in environmental and petroleum industry fields. Supercritical carbon dioxide (SC CO₂) extraction process can be applied as a remediation technique for sediments contaminated with crude oil. On the other hand, SC CO₂ can be applied as an Enhanced Oil Recovery (EOR) technique in the petroleum industry to increase the ultimate recovery factor of crude oil from reservoirs. Therefore, utilization of SC CO₂ for the extraction applications can result both in environmental and economic benefits.

In this study, SC CO_{2 …}

Utilizing Available Residual Pressure In Fujairah Lines In Bypassing Al Ain Reception Station Considering Transients And Water Hammer Conditions, Hazem Bakri Al Naser

Theses

The objective of this study is to utilize the available residual pressure at Fujairah Transmission lines in order to save energy, operation and maintenance costs, and still deliver the required water to the end users of the distribution network. This has been achieved by bypassing the existing pumping stations (i.e. AARS Reservoir and pumping stations in addition to the local reservoirs and pumping stations of each area). The possibility of transients, surge, and cavitation occurrence was studied via a comprehensive transient simulation to make sure that the proposed bypassing will not have any impact on the upstream transmission system by …

Evaluation Of Management Options For Groundwater Resources In Khatt Basin Area, Uae Using Gis And Modflow, Nada Buti Khalifa Buthiana Alsuwaidi

Theses

Khatt springs area has been chosen in 1979 to be a major recreational site in Ras Al Khaimah. The outflow water from these springs has been used to irrigate the surrounding farms. In the period 1999-2004, there was a severe drought which affected the flow and water temperature from the spring as the flow decreased to almost one tenth of its average value and temperature decreased from 40 to 33 C. This work is an attempt to develop a GIS-based groundwater flow model for the Khatt springs area with the following main objectives: 1) Characterize the general hydrogeological setting of …

Integrating Advanced Facades Intro Sustainable Office Buildings In The Emirate Of Abu Dhabi, Uae, Ahmad Omar Balhamar

Theses

Abu Dhabi emirate consume about 130 millions AED in air conditioning electricity bills, this amount is only for 700 buildings in Abu Dhabi City and 300 buildings in Musafah district. Abu Dhabi city consumes 239.70 Kw/m²/year; however Musafah district consumes 179.92 Kw/m²/year. The difference came from different in total area of glass building facades between Abu Dhabi city and Musafah district buildings. Despite the fact that Abu Dhabi is one of the hottest cities in the Gulf region, its modern office buildings are characterized by glass facades. Such a concept comes with increased air conditioning operational …

Permutation Patterns, Reduced Decompositions With Few Repetitions And The Bruhat Order, Daniel Alan Daly

Electronic Theses and Dissertations

This thesis is concerned with problems involving permutations. The main focus is on connections between permutation patterns and reduced decompositions with few repetitions. Connections between permutation patterns and reduced decompositions were first studied various mathematicians including Stanley, Billey and Tenner. In particular, they studied pattern avoidance conditions on reduced decompositions with no repeated elements. This thesis classifies the pattern avoidance and containment conditions on reduced decompositions with one and two elements repeated. This classification is then used to obtain new enumeration results for pattern classes related to the reduced decompositions and introduces the technique of counting pattern classes via reduced …

Naïve Bayes And Similarity Based Methods For Identifying Computer Users Using Keystroke Patterns, Shrijit S. Joshi

Doctoral Dissertations

In this dissertation, we present two methods for identifying computer users using keystroke patterns. In the first method "Competition between naïve Bayes models for user identification," a naïve Bayes model is created for each user. In the training phase of this method, the model of a user is trained using maximum likelihood estimation on the key press latency values extracted from the texts typed by the user. In the user identification phase of this method, for each user we determine the probabilistic likelihood that the typed text belongs to a user. Finally, the typed text is assigned to the user …

Precession Electron Diffraction And Its Advantages For Structural Fingerprinting In The Transmission Electron Microscope, Peter Moeck, Sergei Rouvimov

Physics Faculty Publications and Presentations

The foundations of precession electron diffraction in a transmission electron microscope are outlined. A brief illustration of the fact that laboratory-based powder X-ray diffraction fingerprinting is not feasible for nanocrystals is given. A procedure for structural fingerprinting of nanocrystals on the basis of structural data that can be extracted from precession electron diffraction spot patterns is proposed.

Administrative Support For Online Teaching Faculty, John David Meyer

CCE Theses and Dissertations

When administrators make decisions about the infrastructure support needs of a current or planned online teaching program, these decisions are often based on external expert advice rather than on the advice of experienced ground level faculty who are living with the dynamic nature of the technology and support needed to develop and maintain an effective online teaching program. Online teaching faculty are the best source of advice and information on what works and what does not.

Faculty at the Medical College of Georgia (MCG) were surveyed to find out what elements are important to the development of an effective online …

Section 508 Adherence By Industry Professionals: Improving Universal Design Through Training, Antonio Rincon

CCE Theses and Dissertations

Section 508 of the Rehabilitation Act Amendments of 1998 took effect in 2001 and provides encouragement for universal design and compliance requirements to the federal sector for purchases that are accessible by people with disabilities. A division of General Dynamics Advanced Information Systems (GDAIS) is located in Pittsfield, Massachusetts and provides electronic and information technology solutions to federal customers in the defense, intelligence, and homeland security communities.

The general lack of training is a major factor for low compliance to Section 508. Improving awareness is important at GDAIS in order to increase its federal sales market share, develop new products …

An Investigation Of The Contributions Of Gender, Shopping Orientation, Online Experience, And Website's Interactive Features To Consumers' Intentions To Engage In Apparel E-Commerce Shopping, Amanda Wynn

CCE Theses and Dissertations

E-commerce has experienced exponential growth within the last few years. The rapid growth of e-commerce has created a need to improve consumer acceptance and the consumer's intention to engage in e-commerce. Female consumers have yet to embrace e-commerce as readily as male consumers. Differences between male and female consumer shopping behavior were examined.

This study developed and empirically tested a model to predict the consumer's intention to engage in apparel e-commerce shopping based on the constructs of gender, shopping orientation, online experience, and Website's interactive features. Male and female U.S. consumers age 18 and older were surveyed to determine their …

Parallel Mining Of Association Rules Using A Lattice Based Approach, Wessel Morant Thomas

CCE Theses and Dissertations

The discovery of interesting patterns from database transactions is one of the major problems in knowledge discovery in database. One such interesting pattern is the association rules extracted from these transactions. Parallel algorithms are required for the mining of association rules due to the very large databases used to store the transactions. In this paper we present a parallel algorithm for the mining of association rules. We implemented a parallel algorithm that used a lattice approach for mining association rules. The Dynamic Distributed Rule Mining (DDRM) is a lattice-based algorithm that partitions the lattice into sublattices to be assigned to …

Cyanide Analysis In Wastewater, Heather Marie Lutes

Theses Digitization Project

The purpose of this project was to look at and determine the methods that would best prevent the occurrence of false readings durring testing and analysis of cyanide in wastewater. This project was designed to help those wastewater treatment plants in the Santa Ana Watershed who are in the process of developing a uniform method that minimizes or eliminates interferences currently found. Eastern Municipal District, Inland Empire Utilities agency, Orange County Water District, San Bernardino Valley Municipal, Water District, and Western Municipal Water District all are members of the Santa Ana Watershed Project Authority (SAWPA).

Geometric Theorem Proving Using The Groebner Basis Algorithm, Karla Friné Rivas

Theses Digitization Project

The purpose fo this project is to study ideals in polynomial rings and affine varieties in order to establish a connection between these two different concepts. Doing so will lead to an in depth examination of Groebner bases. Once this has been defined, step will be outlined that will enable the application of the Groebner Basis Algorithm to geometric problems.

The Composition Of Split Inversions On The Hyperbolic Plane, Robert James Amundson

Theses Digitization Project

The purpose of the project is to examine the action of the composition of split inversions on the hyperbolic plane, H². The model that is used is the poincoŕe disk.

A Web Based Grading Assistant System, Nabeel Saeed Alzahrani

Theses Digitization Project

The purpose of this study is the design and development of a web-based tool, Gas, that can automatically, or semi-automatically grade beginner-level programs written in programming language C++. This project aims at a system that is highly customizable so that various grading criteria can be changed and implemented depending on the assignment to be graded.

Design, Development, And Implementation Of A Wireless Local Area Network (Wlan): The Hartford Job Corps Academy Case Study, Tracey Kershner Cooley

CCE Theses and Dissertations

Wireless Local Area Networks (WLANs) offer flexibility, mobility, and scalability to educational institutions. Students are increasingly expecting anywhere, anytime access to online resources. Secondary school administrators, who serve a similar population as the National Job Corps Program (NJCP), realize that student success in the 21st century workplace depends upon the student's ability to use new and emerging technologies, including wireless technology. Computer access anytime and anywhere is crucial to the success of students today.

Wireless technology has been broadly deployed at educational institutions, such as the Hartford Job Corps Academy (HJCA), but little is known about how these networks are …

The Fundamental Group And Van Kampen's Theorem, Aaron Christopher Thomas

Theses Digitization Project

This thesis deals with the field of algebraic topology. Basic topological facts are addressed including open and closed sets, continuity, homeomorphisms, and path connectedness as well as discussing Van Kampen's Theorem in detail.

An Extendable General Platform For Cluster Analysis And Validation, Brandon Troy Edwards

Theses Digitization Project

This thesis implements a general platform which integrates several commonly used cluster analysis algorithms with ease of use and extendability, along with various validation techniques to analyze the results of algorithms.

In Situ Bioremediation Of Perchlorate In Soil And Groundwater, David Christopher Bertolacci

Theses Digitization Project

This project conducted a technology assessment for in-situ bioremediation of perchlorate in soil and groundwater and assessed the suitability of electon donor amendments.

On A Symmetric Presentation Of The Double Cover Of M₂₂: 2, Gabriela Laura Maerean

Theses Digitization Project

The purpose of this project is to construct finite homomorphic images of infinite semi-direct products. We will construct two finite homomorphic images, L₂ (8) and PGL₂ (9) of the infinite semi-direct product 2*³ : S₃. The main part of this project is to construct the double cover 2 - M₂₂ : 2 and the automorphism group M₂₂ : 2 of the Matheiu sporadic group M₂₂ as a homomorphic image of the progenitor 2*⁷ : L₃ (2).

Using Non-Euclidean Geometry In The Euclidean Classroom, Kelli Jean Wasserman

Theses Digitization Project

This study is designed to explore the ramifications of supplementing the basic Euclidean geometry, with spherical geometry, a non-Eugledian geometry curriculum. This project examined different aspects of the impact of spherical geometry on the high school geometry classroom.

The Promotion And Prevention Of Ahwahnee Water Principles For Resource Efficient Land Use In The Cities Of Ontario And San Bernardino, Melissa Danielle Miller

Theses Digitization Project

This project will explore the environmental benefits of sustainable land use practices as defined in the Ahwahnee Water Principles for Resource Efficient Land Use. These principles identify resource efficient land use practices that local communities can implement. City ordinances contain barriers to prevent the implementation of Ahwahnee Water Principles. The city of Ontario's municipal code, New Model Colony General Plan, and several specific area plans as well as San Bernardino's general plan, municipal code, and University Hills Specific Plan were analyzed to identify preventions and promotions of these water principles. It was discovered both cities have high percentages in the …

An Investigation Of Training In Creative Problem Solving And Its Relationship To Affective And Effective Idea Generation Of Entrepreneurial Learners, Charles Edward Leach

CCE Theses and Dissertations

A significant proportion of the population engages in entrepreneurial behavior but many ventures do not survive beyond startup thus decreasing the pool of entrepreneurs available to contribute to the economy. Opportunity recognition is central to entrepreneurial success and the improper delineation of opportunities is cited as a leading cause of venture failure. There is a logical link between creativity, innovation and entrepreneurship. The goal of the researcher in this study was to explore the relationships between CPS training and the generation of entrepreneurial ideas.

The investigation studied the relationship of training in creative problem solving (CPS) to the opportunity identification …

Share World: A Web-Based Reuse Managment System, Raymol Philomina Rappai

Theses Digitization Project

The System Share World Web-Based Reuse Management System (WRMS) is an online website that enables the sharing of items in a web friendly environment. The project is a self-maintained web-based application managed by the community. The application can be easily customized to adapt to various communities, whether non-profit or commercial.

The Wright Message, 2009, University Of Northern Iowa. Department Of Mathematics.

The Wright Message

Inside this issue:

-- Dear Department Alumni and Friends
-- 2009 - 2010 Tenure-Stream Faculty
-- Mathematics Education Program
-- Project and Grants
-- Summer Research for UNI Math Students
-- Student Competitions
-- The Iowa Collegiate Mathematics Competition
-- TEAM News
-- Alliance Program
-- Two Endowment Funds
-- Mathematics Contribution Form
-- Mathematics Scholarship Funds
-- Applause and Congratulations!
-- Math Walk Challenge

Water Evaporation From Atmospheric Aerosols, Patrick Louden, Christopher Lawrence

Student Summer Scholars Manuscripts

With the recent discovery of the ubiquity of organic material in tropospheric aerosols, it has been postulated that the rates of water evaporation and condensation into the aerosols could be affected by thin surfactant films, which could ultimately affect cloud formation. Nathanson et al. have begun to study the effect of water evaporation from sulfuric acid solutions through the short-chain surfactant, butanol. They have found that a nearly full monolayer of butanol fails to reduce water evaporation from the acid. This unexpected result raises many questions about the mechanism of water evaporation. We used molecular modeling to help answer some …