Digital Commons Network^™

Economic Contribution Of The Agricultural Sector To The Arkansas Economy In 1997-2014, Leah English, Jennie Popp, Wayne Miller

AAES Research Reports and Research Bulletins

Agricultural production, processing, and retail industries are major contributors to the Arkansas economy in terms of GDP. Agriculture contributes to the economy through direct agricultural production, value-added processing, and agricultural retail activities.

Corn Yield Loss Estimates Due To Diseases In The United States And Ontario, Canada From 2012 To 2015, Daren S. Mueller, Kiersten A. Wise, Adam J. Sisson, Tom W. Allen, Gary C. Bergstrom, D. Bruce Bosley, Carl A. Bradley, Kirk D. Broders, Emmanuel Byamukama, Martin I. Chilvers, Alyssa Collins, Travis R. Faske, Andrew J. Friskop, Ron W. Heiniger, Clayton A. Hollier, David C. Hooker, Tom Isakeit, Tamra A. Jackson-Ziems, Douglas J. Jardine, Heather M. Kelly, Kasia Kinzer, Steve R. Koenning, Dean K. Malvick, Marcia Mcmullen, Ron F. Meyer, Pierce A. Paul, Alison E. Robertson, Gregory W. Roth, Damon L. Smith, Connie A. Tande, Albert U. Tenuta, Paul Vincelli, Fred Warner

Department of Plant Pathology: Faculty Publications

Annual decreases in corn yield caused by diseases were estimated by surveying members of the Corn Disease Working Group in 22 corn-producing states in the United States and in Ontario, Canada, from 2012 through 2015. Estimated loss from each disease varied greatly by state and year. In general, foliar diseases such as northern corn leaf blight, gray leaf spot, and Goss’s wilt commonly caused the largest estimated yield loss in the northern United States and Ontario during nondrought years. Fusarium stalk rot and plant-parasitic nematodes caused the most estimated loss in the southern-most United States. The estimated mean economic loss …

A Note On The Log-Alpha-Skew-Normal Model With Geochemical Applications., Osvaldo Venegas, Heleno Bolfarine, Diego I. Gallardo, Alberto Vergara-Fernandez, Hector W. Gomez

Applied Mathematics & Information Sciences

In this paper we introduce an extension of the log-normal distribution, based on the alpha-skew-normal distribution introduced by Elal-Olivero [10]. Basic properties, moments, moment estimators, maximum likelihood estimators and a simulation study are discussed. We apply the approach developed in this paper to data sets related to neodymium and nickel concentrations in soil samples. Model fit indicates good performance of the proposed model when compared with less flexible models.

Stability Analysis Of Extended One-Step Schemes For Stiff And Non-Stiff Delay Differential Equations, F. Ibrahim, F. A. Rihan, S. Turek

Applied Mathematics & Information Sciences

Herein, we provide a reliable and stable computational technique, based on a class of extended one-step methods for solving delay differential equations with constant and variable delays. Numerical stability properties of the schemes are investigated. The schemes are suitable for stiff and non-stiff problems. Numerical results and simulations are presented to demonstrate the effectiveness of the methodology.

Dynamics Of A Worm Propagation Model With Quarantine In Wireless Sensor Networks, Nguyen Huu Khanh

Applied Mathematics & Information Sciences

We study the attacking behavior of possible worms inWireless Sensor Network (WSNs). Using epidemic theory, we propose a susceptible-infectious-quarantine-recovered (SIQR)model to describe dynamics of worms propagation with quarantine in the wireless sensor network. Mathematical analysis shows that dynamics of the spread of worms are determined by the threshold R0. If R0 ≤ 1, the worm-free equilibrium is globally asymptotically stable, and if R0 > 1, the worm-endemic equilibrium is globally asymptotically stable. Lyapunov functional method as well as geometric approach are used for proving the global stability of equilibria. A numerical investigation is carried out to confirm the analytical results. As …

Online Rotating Pi Controller For Ncs Over Communication Constraints, Pooya Hajebi, Seyed Mohammad Taghi Almodarresi

Applied Mathematics & Information Sciences

A new method for controlling the plant in networked control systems (NCSs) is proposed. Network time delay and packet loss are two major drawbacks in data communication networks which make NCSs unstable. Unlike previous related research works, this new proposed rotating PI controller based method has the advantage of considering time delay and packet loss effects simultaneously. Time delay is estimated online and then used for tuning the PI controller by rotating the phase plane, while packet loss sequences are modeled by Markov chain. This novel method improves the performance compared to other methods, especially when packets are dropped consecutively …

Stability Analysis Of Implicit-Explicit Class For Solving Odes And Ddes, Iman H. Ibrahim, Fatma M. Yousry

Applied Mathematics & Information Sciences

Implicit-Explicit schemes have been widely used, it reduces the computational work for solving differential equations which have both stiff and non-stiff parts . In this paper an implicit-explicit linear multistep method for solving ordinary and delay differential equations is introduced. In both cases we are going to study the stability of the method using two approaches and the stability regions will be ploted. Numerical tests are introduced.

Annular Regions Containing All The Zeros Of A Polynomial Via Special Numbers, Eze R. Nwaeze

Applied Mathematics & Information Sciences

In this paper, we obtain some results concerning annular regions containing all the zeros of a given polynomial. These annular regions have radii in terms of the Bell numbers, Pell numbers, Stirling numbers, Fibonacci numbers, Motzkin numbers, Catalan numbers, and/or the Schr¨oder numbers. Also, we show, by means of examples, that for some polynomials our results sharpen some of the known results in this direction.

Algebraic Iterative Reconstruction-Reprojection (Airr) Method For High Performance Sparse-View Ct Reconstruction, Ali Pour Yazdanpanah, Emma E. Regentova, George Bebis

Applied Mathematics & Information Sciences

The reconstruction from sparse- or few-view projections is one of important problems in computed tomography limited by the availability or feasibility of a large number of projections. Working with a small number of projections provides a lower radiation dose and a fast scan time, however an error associated with the sparse-view reconstruction increases significantly as the space sparsity increases that may cause the reconstruction process to diverge. The iterative reconstruction-re-projection (IRR) algorithm which uses filtered back projection (FBP) reconstruction has been used for the sparse-view computed tomography applications for several years. The IRR-TV method has been developed as a higher …

A Gpgpu Physarum Cellular Automaton Model, Nikolaos I. Dourvas, Georgios Ch. Sirakoulis, Philippos Tsalides

Applied Mathematics & Information Sciences

Scientists have been gaining inspiration from several natural processes and systems to find fine solutions in many complex hard to solve engineering problems for many years now. Nevertheless, most of these natural systems suffer from great amount of time to perform; thus, scientists are seeking for computational tools and methods that could encapsulate in a conscious way nature’s genius, dealing at the same moment with time complexity. In this conquest, Cellular Automata (CA) proposed long time ago by John von Neumann, can be considered as a promising candidate. CA have the ability to capture the essential features of systems in …

Ikeda Map And Phase Conjugated Ring Resonator Chaotic Dynamics, V. Aboites, D. Liceaga, A. Kiryanov, M. Wilson

Applied Mathematics & Information Sciences

The dynamical behavior of a laser beam confined within a ring-phase-conjugated resonator modeled with a chaos generating element based on the Ikeda map is presented. Using the matrix ray optics, explicit expressions are obtained for the elements of the 2x2 dynamical matrix, which is found in terms of the specific map parameters, state variables and resonator parameters. The phase diagrams obtained show that the so called Ikeda map beams present complex dynamics, including critical points and metastability.

Co-Dynamics Of Trypanosomiasis And Cryptosporidiosis, Kazeem Oare Okosun, Mirirai Mukamuri, Oluwole Daniel Makinde

Applied Mathematics & Information Sciences

In this paper a mathematical model for trypanosomiasis-cryptosporidium co-infection dynamics is investigated to give a theoretical mathematical account of the impact of cryptosporidiosis on trypanosomiasis dynamics. The model steady states are analyzed. The disease-free equilibrium is shown to be locally asymptotically stable when the associated epidemic basic reproduction number for the model is less than unity. The trypanosomiasis only and the cryptosporidiosis only model are each found to exhibit transcritical and backward bifurcation phenomena respectively. While the co-infection model exhibits the possibility of multiple endemic equilibria. From the sensitivity analysis, the trypanosomiasis reproductive number Rlt 0 is more sensitive to …

Hydromagnetic Peristaltic Transport Of Variable Viscosity Fluid With Heat Transfer And Porous Medium, F. M. Abbasi, T. Hayat, B. Ahmad

Applied Mathematics & Information Sciences

This article examines the peristaltic transport of variable viscosity fluid in a planar channel with heat transfer. The fluid viscosity is taken temperature dependent. The fluid is electrically conducting in the presence of a constant applied magnetic field. Both channel and magnetic field possess the inclined considerations. An incompressible fluid saturates the porous space. Heat transfer analysis is carried out in the presence of viscous dissipation and Joule heating. The resulting problems are solved numerically. A parametric study is performed to predict the impact of embedded variables. Results indicate that the fluid with variable viscosity has higher value of pressure …

Numerical Study Of Heat Exchange In Human Body Through Clothes And Thermal Stability Of Biological Tissues, Aijaz A. Najar, M. A. Khanday

Applied Mathematics & Information Sciences

The change in ambient temperature plays a key role in body thermoregulation. The use of protective layer (clothes) has not only ethical values but also acts as a shield to combat with the severe environmental conditions. A mathematical model on bioheat transfer has been formulated with appropriate diffusing and matching conditions at the dermal layers and the protective layer. The finite difference scheme has been employed to solve the model and the conditions for the thermal stability of tissue temperatures were illustrated using MATLAB and FlexPDE software’s. The results obtained are applicable to a wide range of problems to maintain …

A Comparative Study Of A Face Components Based Model Of Ethnic Classification Using Gabor Filters, Hajra Momin, Jules-Raymond Tapamo

Applied Mathematics & Information Sciences

The determination of ethnicity of an individual can be very useful in face recognition and person identification. In this paper, we propose a model of ethnic classification of a person from face images. The proposed model detects facial landmarks such as eyes, nose and mouth in a face image and then applies Gabor filters to each component to extract key facial features. K-Means, Naive Bayesian(NB), Multilayer Perceptron(MLP), SVM(Support Vector Machines) are then used to classify the human face image into different ethnic groups. Classification is performed in 2-class ( Asian and Non- Asian), 3-class (Asian,White and Black) or 4-class (Asian, …

Ranking Occupational Risk Levels Of Emergency Departments Using A New Fuzzy Mcdm Model: A Case Study In Turkey, Elif Kılıc Delice, Salih Zegerek

Applied Mathematics & Information Sciences

Health care personnel, particularly those working in emergency departments (EDs), perform activities involving various occupational risks from diseases to accidents. The identification of these risks are critical to taking effective preventive measures, which would improve the health and life quality of this professional group. However, risk assessment is a Multi-Criteria Decision Making (MCDM) problem involving quantitative and qualitative risk factors; it contains imprecise information from the lack of knowledge of health workers. In the present study, the new Fuzzy MCDM model is proposed incorporating the fuzzy Decision Making Trial and Evaluation Laboratory (DEMATEL) and fuzzy Grey Relational Analysis (GRA) to …

Wall Fellows Newsletter, Volume 4, Issue 5, Fall 2016, Coastal Carolina University

Wall Fellows Newsletter

Newsletter of the Wall Fellows Program in the E. Craig Wall Sr. College of Business Administration.

From The Editor: Caring For Our Common Home - We're Doing Well, Edward W. Schmidt S.J.

Conversations on Jesuit Higher Education

No abstract provided.

Composting, Food Waste, And Trust The Tap, Isabella Kaser, Jake Gilchrest Dudley

Conversations on Jesuit Higher Education

No abstract provided.

Aquilegia Volume 40 No. 2 Annual Conference Issue 2016 Annual Conference 2016; Forty Years Of Change: Plants, People, Places, Jan Loechell Turner, Charlie Turner, Linda Smith, Nan Daniels, Jen Bousselot

Aquilegia - Colorado Native Plant Society

The CoNPS Annual Conference is the primary state gathering and annual fund-raiser for the Colorado Native Plant Society, a non-profit organization. Proceeds from the conference support CoNPS’ wide-ranging projects including education, conservation, native plant gardening, and botanical and horticultural publications and activities.

Timber Talk, Vol. 54, No. 3, September 2016

Timber Talk: Nebraska Forest Industry Newsletter

Lumber Market Reports 1

Hardwood Lumber Prices 2

Green Star Gasifier Seeking Wood Fuel 3

Emerald Ash Borer Discovered in Eastern Nebraska 4

Nebraska Forest Industry Spotlight 5

Timber Sales 7

Trading Post 8

Riparian Fuel Treatments In The Western Usa: Challenges And Considerations, Kathleen A. Dwire, Kristen E. Meyer, Gregg Riegel, Timothy Burton

Joint Fire Science Program Synthesis Reports

Fuel reduction treatments are being conducted throughout watersheds of the western United States to reduce hazardous fuels in efforts to decrease the risk of high-severity fire. The number of fuel reduction projects that include near-stream environments is increasing, bringing new challenges to riparian management. Riparian areas are protected by administrative regulations, some of which are largely custodial and restrict active management. However, riparian areas have also been affected by fire suppression, land use, and human disturbance, so manipulative treatments of vegetation and other fuels may be needed in some locations to maintain riparian biodiversity and restore valued functions. This report …

Resource Guide For Addiction And Mental Health Care Consumers: Answering Questions About Insurance Coverage And Parity For Addiction And Mental Health Care Services, Lucy C. Hodder, Michele D. Merritt, Margaret H. Schmidt, Jacqueline Botchman, Caitlyn Ebert, Marguerite Corvini, Kate Crary, Bridget Drake

Law Faculty Scholarship

Navigating the maze of health insurance coverage can be difficult. For individuals with addiction or mental illness, the process of getting treatment approved and paid for by health insurance can be overwhelming. As a result, many people give up when their health insurance company denies coverage for needed services. This Guide can help people learn how to access health insurance and use their coverage to pay for treatment. This Guide also provides a basic explanation of consumers’ rights under the federal Mental Health Parity and Addiction Equity Act.

Using Photovoice To Understand Climate Change Adaptation In Rural Ontario, Kylie Hissa

Geography and Environmental Studies Major Research Papers

The examination of community adaptation and resilience approaches to address the threats of climate change in rural Ontario is becoming increasingly important in emergency management and preparedness. Community engagement becomes critical in this regard, as local experiences partly influence perceptions of climate change risks within municipalities. Photovoice is a community-based participatory research methodology that empowers participants to document their perceptions and understandings of a particular issue through the use of visual images. This technique was undertaken to understand the impacts of the F3 tornado that hit the community of Goderich, Ontario in 2011 and capture their member’s perceptions on disaster …

Possessing History And American Innocence: James Baldwin, William F. Buckley, Jr., And The 1965 Cambridge Debate, Daniel Mcclure Ph.D.

History Faculty Publications

The 1965 debate at Cambridge University between James Baldwin and William F. Buckley, Jr., posed the question: “Has the American Dream been achieved at the Expense of the American Negro?” Within the contours of the debate, Baldwin and Buckley wrestled with the ghosts of settler colonialism and slavery in a nation founded on freedom and equality. Framing the debate within the longue durée, this essay examines the deep cultural currents related to the American racial paradox at the height of the Civil Rights movement. Underscoring the changing language of white resistance against black civil rights, the essay argues that …

Hell And High Water: Diminished Septic System Performance In Coastal Regions Due To Climate Change, Jennifer A. Cooper, George W. Loomis, José A. Amador

Natural Resources Science Faculty Publications

Climate change may affect the ability of soil-based onsite wastewater treatment systems (OWTS) to treat wastewater in coastal regions of the Northeastern United States. Higher temperatures and water tables can affect treatment by reducing the volume of unsaturated soil and oxygen available for treatment, which may result in greater transport of pathogens, nutrients, and biochemical oxygen demand (BOD₅) to groundwater, jeopardizing public and aquatic ecosystem health. The soil treatment area (STA) of an OWTS removes contaminants as wastewater percolates through the soil. Conventional STAs receive wastewater from the septic tank, with infiltration occurring deeper in the soil profile. …

Context-Free Petri Net Controlled Grammars Under Parallel Firing Strategy, Gairatzhan Mavlankulov, Laula Zhumabayeva, Mohamed Othman, Tamara Zhukabayeva, Mohd Hasan Selamat, Sherzod Turaev

Applied Mathematics & Information Sciences

Petri nets are becoming one of the most important mathematical tools in Computer Science. In this paper we propose a new firing strategy in Petri Nets called a parallel firing strategy and study some mathematical properties of concurrent grammars which are controlled by Petri nets under parallel firing strategies.We propose some modes on this strategy and a notion of concurrent context-free grammar which is a similar to the context-free Petri nets under parallel firing strategy, where parallel firing modes of context-free Petri nets were converted to rule applications in context-free grammars. Moreover, we investigate some their properties.

Swosu Fact Book Fall 2016, Monica Varner, Diane Fitzsimmons

Fact Books

Southwestern Oklahoma State University Fact Book provides a ready source of information to answer frequently asked questions about the University and its operations. The Fact Book is compiled to assist the university with strategic planning, academic program reviews, grant writing, accreditation, and institutional information to help guide decision-making. The report is designed to help faculty, staff, and administrators better understand the student body and university trends. The data analyzed for this report was collected from 2007 to 2016.

Unless otherwise noted, the information in the Fact Book is collected on the tenth class day of each fall semester from standard …

Microrna-140 Is Elevated And Mitofusin-1 Is Downregulated In The Right Ventricle Of The Sugen5416/Hypoxia/Normoxia Model Of Pulmonary Arterial Hypertension, Sachindra Raj Joshi, Vidhi Dhagia, Salina Gairhe, John G. Edwards, Ivan F. Mcmurtry, Sachin A. Gupte

NYMC Faculty Publications

Heart failure, a major cause of morbidity and mortality in patients with pulmonary arterial hypertension (PAH), is an outcome of complex biochemical processes. In this study, we determined changes in microRNAs (miRs) in the right and left ventricles of normal and PAH rats. Using an unbiased quantitative miR microarray analysis, we found 1) miR-21-5p, miR-31-5 and 3p, miR-140-5 and 3p, miR-208b-3p, miR-221-3p, miR-222-3p, miR-702-3p, and miR-1298 were upregulated (>2-fold; P < 0.05) in the right ventricle (RV) of PAH compared with normal rats; 2) miR-31-5 and 3p, and miR-208b-3p were upregulated (>2-fold; P < 0.05) in the left ventricle plus septum (LV+S) of PAH compared with normal rats; 3) miR-187-5p, miR-208a-3p, and miR-877 were downregulated (>2-fold; P < 0.05) in the RV of PAH compared with normal rats; and 4) no miRs were up- or downregulated with >2-fold in LV+S compared with RV of PAH and normal. Upregulation of miR-140 and miR-31 in the hypertrophic RV was further confirmed by quantitative PCR. …

Mice With A Heterozygous Lrp6 Deletion Have Impaired Fracture Healing, Travis A. Burgers, Juan F. Vivanco, Juraj Zahatnansky, Andrew J. Vander Moren, James J. Mason, Bart O. Williams

Mechanical Engineering Faculty Publications

Bone fracture non-unions, the failure of a fracture to heal, occur in 10%–20% of fractures and are a costly and debilitating clinical problem. The Wnt/β-catenin pathway is critical in bone development and fracture healing. Polymorphisms of linking low-density lipoprotein receptor-related protein 6 (LRP6), a Wnt-binding receptor, have been associated with decreased bone mineral density and fragility fractures, although this remains controversial. Mice with a homozygous deletion of Lrp6 have severe skeletal abnormalities and are not viable, whereas mice with a heterozygous deletion have a combinatory effect with Lrp5 to decrease bone mineral density. As fracture healing closely models embryonic skeletal …