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Dynamics Of A Two-Dimensional Competitive System Of Rational Difference Equations With Quadratic Terms, Vahidin Hadžiabdić, Mustafa Kulenovic, Esmir Pilav

Mathematics Faculty Publications

We investigate global dynamics of the following systems of difference equations:

[Mathematical equations cannot be displayed here, refer to PDF]

where the parameters b₁, a₂, A₁, c₂, are positive numbers and the initial condition y₀ is an arbitrary nonnegative number and x₀ is a positive number. We show that this system has rich dynamics which depends on the part of the parametric space. We find precisely the basins of attraction of all attractors including the points at ∞.

Scholarworks Usage Report, 12-2014, Scholarworks

ScholarWorks Reports

This report contains download and page view statistics for ScholarWorks, December 2014.

Year In Review 2014, El Centro De La Raza

Newsletters

No abstract provided.

Capital Punishment Reforms In Illinois: Comparing The Views Of Police, Prosecutors, And Public Defenders, Robert M. Lombardo, David Olson

Criminal Justice & Criminology: Faculty Publications & Other Works

On 9 March 2011, Governor Patrick Quinn abolished capital punishment in Illinois stating that the state’s system of imposing the death penalty was inherently flawed. Quinn’s announcement followed an eleven-year effort to end the death penalty that began with a 2000 moratorium on executions imposed by then Governor George Ryan. This moratorium was the direct result of the appellate reversal of a series of death-row convictions. Prompted by these reversals, Ryan also created the Governor’s Commission on Capital Punishment to study the use of the death penalty in Illinois. As a result of this effort, comprehensive legislation was enacted to …

Cole Train | V.11, No.2 (Fall 2014), Houston Cole Library

Library Annual Reports & Newsletters

No abstract provided.

Examine The Role Of Social Media And Volunteered Geographic Information In 2014’S California Drought, Ligang Zhang

Community and Regional Planning Program: Theses

Abstract

Social media encompasses online communication platforms. Presently, it has been involved in the management and mitigation of crises and disasters. The paper discusses the use of social meida and Volunteered Geographic Information (VGI) in the management of the 2014’s California drought. The significance of social media and volunteered geographic information is emphasized in the study. As well as factors that influence the suitability of the two, social media and voluntary geographic information in the whole process of managing the California drought are also explored. The SWOT (Strengths, Weaknesses, Opportunities, Threats) analysis of one-way info-sharing, two-way info-sharing, rumor control, reconnection, …

Comparing Mississippi's Public University Graduation Rates For Community College Completers And Non-Completers, Andrew Clark Dale

Dissertations

This study is based on the notion that in Mississippi, a large number of Mississippi community college academic students transfer to 4-year universities in-state, as is the case in Alabama (Sacksteder LaClair, 2010). Mississippi community colleges have had a hard time tracking students who leave the institution without graduating. This study sought to document the most accurate numbers in community college completers and discover how many of Mississippi’s community college students are successful at the university level. Data were collected on former community college students at five of the state’s eight public four-year universities. The study revealed that 82% of …

Lister Hill Letter - December 2014, Lister Hill Library

Lister Hill Letter (2011-2015)

No abstract provided.

Use Of Social Media By Indiana Principals And Superintendents, Robert Stephen Griffin Jr.

All-Inclusive List of Electronic Theses and Dissertations

The purpose of this study was to examine the use of social media by Indiana K-12 principals and superintendents. The use of social media has become prevalent both as a social and professional tool. The social media movement has evolved quickly over the past five years; however, schools and school districts have been slow to effectively utilize this tool out of fear, apprehension, and ignorance. The opportunity to explore social media as a professional tool by educational leaders was opportune and timely as this tool becomes a multi-purpose tool in today’s society. Descriptive statistics, independent sample t test, and one-way …

Adults With Intellectual Disability Or Autism Spectrum Disorder. Executive Summary, Kimberly I. Snow Mhsa, Ba, Stuart Bratesman Mpp, Taryn Bowe, Julie T. Fralich Mba

Disability & Aging

This chartbook describes Maine’s historical trends in meeting the needs of adults with ID/ASD through institutional and community based services in comparison to other states; a detailed analysis of the population’s utilization of different types of services and their costs in SFY 2010; the implementation of the Supports Intensity Scale (SIS) as a means of identifying the supports needs of the adults with ID/ASD; and the complement of providers serving this population in Maine.

Corruption And Productivity, Chris Kelly

All Theses

Corruption is suggested to have a negative impact on productivity and thus growth. Several studies have studied the relationship closely, including Hall and Jones (1999) and Lambsdorff (2003). This paper seeks to build on their foundation and specify a new and robust model by looking at the effect of corruption controls on total factor productivity through a two-stage least squares regression. Since it is through public institutions that corruption manifests, also examined are differences between `inclusive' and `extractive' institutions. Also important is the degree to which a state is centralized. Extraction by way of corrupt institutions differs in highly centralized …

Hand Hygiene Promotion: An Essential Strategy For Preventing Foodborne Disease In Elementary Schools, Zhangqi Wang

All Theses

Student absenteeism is a pervasive problem in the United States, causing a number of educational, economic, and institutional problems. Hand-hygiene interventions have been reported to be a method for reducing illness-associated student absenteeism. As an increasing number of schools offer self-service, including salad bars and bowls of whole fresh fruit, opportunities for the transmission of foodborne pathogens via hands could possibly increase illness-associated student absenteeism. To address this problem, we conducted a two-phase study. First, we conducted a systematic literature review to evaluate peer-reviewed studies (N=24) that reported an association between hand hygiene interventions and illness-associated absenteeism reduction in elementary …

Anthropology Students Collaborate With Alum At Hollaback, Ohio University College Of Arts & Sciences

All Forum Articles

No abstract provided.

Reliability-Based Design And Acceptance Protocol For Driven Piles, Joseph Jabo

Graduate Theses and Dissertations

The current use of the Arkansas Standard Specifications for Highway Construction Manuals (2003, 2014) for driven pile foundations faces various limitations which result in designs of questionable reliability. These specifications are based on the Allowable Stress Design method (ASD), cover a wide range of uncertainties, do not take into account pile and soil types, and were developed for general use. To overcome these challenges it is deemed necessary to develop a new design and acceptance protocol for driven piles. This new protocol incorporates locally calibrated RLFD resistance factors for accounting for local design and construction experiences and practices, as well …

Modeling Scenarios Of Sea-Level Rise And Human Migration: Rita Village, The Republic Of The Marshall Islands, Donna Davis

Graduate Theses and Dissertations

This study explores the relationship between sea-level rise and human migration from Rita Village in the Republic of the Marshall Islands (RMI). As one of only four low-lying atoll countries at the forefront of risks associated with climate change, examining the extent to which sea level will rise and displace residents in the Marshall Islands is of timely importance. The approach to this research is a scenario-based, case study and it examines loss of home, human displacement and subsequent migration in Rita Village as a result of varying levels of sea level rise. The scenario-based approach is based on the …

Utilizing Failure Information For Mission Assessment And Optimization For Complex Systems, Charlie Destefano

Graduate Theses and Dissertations

This paper presents a new failure analysis method, Failure Identification for Mission Analysis (FIMA), which performs a general failure analysis for the overall state of a system, as well as a mission-specific analysis that identifies how failures may have differing effects on the various mission tasks that a system must complete. The FIMA method is capable of being implemented at any point in the design process. During early design stages, the FIMA method will identify various qualitative failure scenarios based on programmed functional relationships and any number of initial failures wished to be simulated. The functional relationships for this method …

Characterization Of A Novel Fungal-Specific Gene, Fug1, In Fusarium Verticillioides, John Byron Ridenour

Graduate Theses and Dissertations

Filamentous fungi are responsible for numerous plant and animal diseases. The filamentous ascomycete Fusarium verticillioides is a globally important pathogen of maize, capable of causing severe yield reductions and economic losses. Also of substantial concern is the contamination of infected kernels with fumonisins, toxic secondary metabolites linked to toxicoses in humans and livestock. The number of sequenced fungal genomes is rapidly increasing. However, functional characterization of fungal genes has not progressed at a comparable rate. In pathogenic fungi, uncharacterized genes represent a source for novel virulence factors or anti-fungal targets. Therefore, to fully understand the genetic mechanisms underlying fungal pathogenesis, …

Microbial Community Shifts Caused By Changes In The Primary Oxidant At A Drinking Water Treatment Plant, Connie Marie Moloney

Graduate Theses and Dissertations

Microbial communities resistant to common oxidants can cause concerns for water treatment plants (WTPs). If a bacterium is not fully oxidized during disinfection, these species can impede upon filtration processes or seed biofilms in the distribution system. In an effort to minimize disinfection by-products (DBP's) that result from the reaction of chlorine (Cl2) with natural organic matter, water treatment plants have the option to change their primary oxidant to chlorine dioxide (ClO2). The following study examines the change in microbial communities during the sedimentation process under differing oxidation regimes, specifically chlorine (Cl2) and ClO2 at the local water treatment plant …

Calibration Of Resistance Factors For Driven Piles Using Static And Dynamic Tests, Deshinka A. Bostwick

Graduate Theses and Dissertations

The field of geotechnical engineering has evolved from Allowable Stress Design (ASD) to Load Factor and Resistance Design (LRFD) which has led to a need to quantify the measures of uncertainty and the level of reliability associated with a project. The measures of uncertainty are quantified by load and resistance factors, while the level of reliability is driven by the amount of risk an owner is willing to take and is quantified by the reliability index. The load factors are defined through structural design codes, but the resistance factors have uncertainties that can be mitigated through reliability based design. The …

Development Of A Hydrologic Model For An Urban Headwater Stream: The Influence Of Pervious Surface Properties On Runoff Dynamics, Dawn A. Farver

Graduate Theses and Dissertations

A hydrologic model was developed for the Mullins Creek (MC) catchment located on the University of Arkansas campus in Fayetteville, Arkansas. The MC catchment is a small, dynamic urban stream system with a range of land use/land cover (LULC), an extensive and well-developed stormwater drainage network, and extensive urbanization (over 90% developed, and almost 50% impervious surface area (ISA)). Selected datasets provided information on the stormwater drainage network, the physical attributes of the catchment and receiving waterway (i.e. drainage area, slope, etc.), infiltration potential of soil map units, LULC, and percent ISA. These datasets were analyzed to provide input parameters …

Identification Of Root-Knot Nematodes (Meloidogyne Spp.) Of Arkansas Using Molecular Diagnostics, Churamani Khanal

Graduate Theses and Dissertations

Root-knot nematodes (Meloidogyne spp.) are highly-adaptable, obligate plant parasites distributed worldwide. In addition, root-knot nematodes are an economically important genus of plant-parasitic nematodes. Meloidogyne incognita, M. arenaria, M. javanica, M. hapla and M. graminis have been reported from Arkansas during 1964 to 1994. Previous identifications were based primarily on morphological characters and host differentials. In this study, identification using molecular diagnostics methods was performed to identify Meloidogyne species present in Arkansas. A total of 106 soil and root samples from 36 of the 75 counties were collected and processed to obtain root-knot nematodes. Polymerase chain reaction (PCR) was performed …

Dissection Of Gray Leaf Spot Of Maize Through Functional Genomics, Robert Louis Hirsch

Graduate Theses and Dissertations

Gray leaf spot, caused by Cercospora zeae-maydis, is a devastating disease of maize that reduces yields and increases management costs. C. zeae-maydis penetrates maize leaves through stomata, but the biological and molecular bases of this process are poorly understood. The goal of this research was to elucidate the biological parameters of stomatal infection in C. zeae-maydis, and to identify and characterize novel genetic pathways involved in stomatal sensing and pathogenesis. Histopathological observations of a GFP-expressing strain of C. zeae-maydis during infection of maize indicated that the fungus responded to host-derived stomatal cues during the infection process. C. zeae-maydis was observed …

Structure, Aboveground Biomass, And Soil Characterization Of Avicennia Marina In Eastern Mangrove Lagoon National Park, Abu Dhabi, Tareefa Alsumaiti

Graduate Theses and Dissertations

Mangrove forests are national treasures of the United Arab Emirates (UAE) and other arid countries with limited forested areas. Mangroves form a crucial part of the coastal ecosystem and provide numerous benefits to society, economy, and especially the environment. Mangrove trees, specifically Avicennia marina, are studied in their native habitat in order to characterize their population structure, aboveground biomass, and soil properties. This study focused on Eastern Mangrove Lagoon National Park in Abu Dhabi, which was the first mangrove protected area to be designated in UAE. In situ measurements were collected to estimate Avicennia marina status, mortality rate (%), …

Evaluation Of Medicago Truncatula Accessions For Triterpene Saponins And Their Potential Impacts On Plant Pests, Samantha Roberson

Graduate Theses and Dissertations

Plants have developed numerous ways to protect themselves from microbes and insects, including producing secondary metabolites that negatively impact an invading pathogen or pest. Saponins are specialized metabolites found in many plant species and may play a role in protecting the plant. Though saponins are found in many plant species, triterpene saponins are found primarily in dicotyledons, including legumes. Medicago truncatula is a model system for studying legume biology and some accessions accumulate high concentrations of saponins. Accessions of M. truncatula known to have differing levels of saponins in both foliar and root tissues were tested for their suitability as …

The Phenotypic Effects And Transcript Response Of Salt Stress, The Impact Of Viral Infection On Salt Stress Symptoms, And The Effect Of Salt Stress On Soybean Virus Vector Activity In Soybean Varieties That Vary In Chloride Uptake, Alma Glenn Laney

Graduate Theses and Dissertations

With the increase in saline soils worldwide, understanding the mechanisms for salt tolerance in plants is important to reduce yield loss due to salt stress. Soybean, Glycine max (L.) Merr., genotypes differ in chloride uptake with genotypes that take up chloride into foliar tissues tending to be salt-sensitive whereas those that partially exclude chloride from the leaves are more salt-tolerant. Transcriptional and physiological responses were measured in two soybean cultivars, Clark and Manokin, which differ in chloride uptake in response to salt stress and in combination with Soybean mosaic virus (SMV) and its aphid vector, Aphis glycines . The interaction …

Metropolis Chic, Aaron Leverenz

The Prairie Light Review

No abstract provided.

Fingersnaps & Saxophones, Aaron Leverenz

The Prairie Light Review

No abstract provided.

The Bunny & The Toy, Anya Koala

The Prairie Light Review

No abstract provided.

Mismatched, Adam Schweitzer

The Prairie Light Review

No abstract provided.

Open Book, Thania Hernandez

The Prairie Light Review

No abstract provided.