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2018

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A Technique For The Optimization Of Actuation Characteristics Of Ionic Polymer-Metal Composites, Vaughn Varma Dec 2018

A Technique For The Optimization Of Actuation Characteristics Of Ionic Polymer-Metal Composites, Vaughn Varma

Theses

Ionic-Polymer-Metal Composites (IPMCs) are a subset of Electroactive Polymers (EAPs), which are an actively-researched class of electromechanical actuators. IPMCs are similar in function to piezoelectric actuators, however require substantially lower input voltage, requiring as little as 1V to actuate, and with a very high maximum no-load strain of over 300%. IPMCs can be built from biocompatible materials, and do not require the use of any permanent magnets, making them suitable for medical applications, or for use in environments subject to strong or fluctuating magnetic fields. IPMCs are additionally soft and flexible, and are suitable for wet environments, further improving their …


Evaluation Of Alternative Valorization Options For Institutional And Industrial Food Wastes, Swati Hegde Dec 2018

Evaluation Of Alternative Valorization Options For Institutional And Industrial Food Wastes, Swati Hegde

Theses

In recent years many countries and several regions in the United States have passed legislation on banning landfilling of organic waste. It is a well-known fact that organic wastes, including food scraps, generate methane under anaerobic landfill environments and contribute significantly to global warming. As more regions are mandated to follow the landfill ban, there is an increasing demand for alternative technologies for the disposal, treatment and upcycling of food wastes. Disposal and treatment may not result in any value-added products and hence are not the most efficient ways to manage food waste. As food waste has a high energy …


Glimmer, Cody Barron Dec 2018

Glimmer, Cody Barron

Theses

Glimmer is a 3D animated graduate thesis film that is 4 minutes long. The film is a gag-based comedy that sets out to emulate the style of early Warner Brothers shorts as well as other slapstick-style comedies.

The story itself follows a bumbling treasure hunter as he explores a set of newly discovered ancient ruins in the hopes of finding untold riches. His fumbling missteps wake the inhabitant of the ruins, who turns out to be a mischievous and clever monkey. This monkey does not take kindly to the treasure hunter’s theft of his possessions and so sets about the …


Creating Sustainable Industrial Building In China By Lowering Energy Use And Improving The Working Environment, Wenjie Hu Dec 2018

Creating Sustainable Industrial Building In China By Lowering Energy Use And Improving The Working Environment, Wenjie Hu

Theses

Over 70% of energy in China is consumed by industrial buildings and related support activities. In order to reduce production costs, owners of factories tend to pay little attention to protecting the environment or workers’ health, causing many serious consequences. Poorly designed buildings require more energy to operate and are less energy efficient to maintain. A lack of natural lighting results in more energy consumption for interior illumination, and improper fenestration design requires more energy to keep buildings cool. An uncomfortable working environment will affect the working efficiency and physical health of the labor force. In this thesis, two simple, …


The Design And Verification Of A Synchronous First-In First-Out (Fifo) Module Using System Verilog Based Universal Verification Methodology (Uvm), Vinoth Nagarajan Dec 2018

The Design And Verification Of A Synchronous First-In First-Out (Fifo) Module Using System Verilog Based Universal Verification Methodology (Uvm), Vinoth Nagarajan

Theses

With the conventional directed testbench, it is highly improbably to handle verification of current complex Integrated Circuit (IC) designs, because a person has to manually create every test case. The greater the complexity of the designs, the higher the probability of bugs appearing in the code. Increasing complexity of ICs has created a necessity for performing verification on designs with an advanced, automated verification environment. Ideally this would eliminate chip re-spins, minimizing the time required to enable checking of all the design specifications, ensuring 100% functional coverage. This paper deals with the design of Synchronous FIFO using Verilog. A FIFO …


Research & Development Of A Sensory Exploration System, Surabhi Vijay Rajandekar Dec 2018

Research & Development Of A Sensory Exploration System, Surabhi Vijay Rajandekar

Theses

Learning Disabilities affect individuals in all age groups and affect how one comprehends the information they receive. Individuals with learning disabilities are often distracted by their surroundings and face difficulties to follow paths in surroundings. Learning disabilities can be addressed with proper support, feedback, and assistive technology. Schools provide children a favorable environment to learn and can support overcoming such difficulties with the help of different activities. This paper discusses the design of a sensory exploration system for individuals with Autism Spectrum to help them learn how to follow paths and not get distracted. The sensory exploration system is called …


Multi‐Modal Analysis Of Deciduous Tree Stands Toward Ash Tree Inventory: Biomass Estimation And Genus‐Level Discrimination In A Mixed Deciduous Forest, Timothy D. Rupright Dec 2018

Multi‐Modal Analysis Of Deciduous Tree Stands Toward Ash Tree Inventory: Biomass Estimation And Genus‐Level Discrimination In A Mixed Deciduous Forest, Timothy D. Rupright

Theses

The invasive species Agrilus planipennis (Emerald Ash Borer or EAB) is currently impacting ash trees in a large part of the continental United States. One way of measuring the effect of this infestation on the US markets is to determine the spread of the species and the biomass destruction/loss due to this invasive pest. In order to assess such impacts, it is necessary to determine how and where ash trees are located toward accurately measuring the relevant ash species biomass and tree count.

This study utilizes data captured over the campus of Rochester Institute of Technology in Rochester, NY. Hyperspectral …


On Interpixel Capacitive Coupling In Hybridized Hgcdte Arrays: Theory, Characterization And Correction, Kevan Donlon Dec 2018

On Interpixel Capacitive Coupling In Hybridized Hgcdte Arrays: Theory, Characterization And Correction, Kevan Donlon

Theses

Hybridization is a process by which detector arrays and read out circuitry can be independently fabricated and then bonded together, typically using indium bumps. This technique allows for the use of exotic detector materials such as HgCdTe for the desired spectral response while benefiting from established and proven silicon CMOS readout structures. However, the introduction of an intermediate layer composed of conductors (indium) and insulators (epoxy) results in a capacitive interconnect between adjacent pixels.

This interpixel capacitance (IPC) results in charge collected on one pixel, giving rise to a change in voltage on the output node of adjacent pixels. In …


The Development Of An Advanced Low Profile Retractor For Neurosurgery, Mike Allen Dec 2018

The Development Of An Advanced Low Profile Retractor For Neurosurgery, Mike Allen

Theses

This thesis presents the design and development of a skull mounted retractor system for neurosurgical applications. It was hypothesized that a low profile retractor platform could be developed with a multi-point skull mount and a surrounding attached perimeter to better meet the needs of surgeons when invasive retraction is required. Attachment points adjoined around the edge of the craniotomy did not require additional drilling and were intended to provide a more stable, low profile, non-cluttered platform from which spatulas or flexible arms could easily leverage lobe retraction. This improved system is expected to improve operating times and reduce incidence rates …


A Qualitative Description Of Millennial Nurse Administrators' Perspectives On Leadership And Their Practice Environment, John Ian Lamasan, Ryan Michael F. Oducado Dec 2018

A Qualitative Description Of Millennial Nurse Administrators' Perspectives On Leadership And Their Practice Environment, John Ian Lamasan, Ryan Michael F. Oducado

Individual Open Access Articles

Introduction: Millennial nurses are beginning to accept leadership roles and will soon take over governance in the nursing profession and healthcare industry. This study aimed to describe the perspectives on leadership and their practice environment of millennial nurse administrators working in tertiary hospitals in Iloilo City, Philippines. Methods: Eight (8) millennial nurse administrators were purposively chosen. Through a qualitative descriptive inquiry by Sandelowski (2000), data were gathered using semi-structured interviews and analyzed employing qualitative content analysis. Results: Twelve (12) meaningful categories were derived directly from the interview transcripts. Millennial nurse administrators perceive leadership by way of (1) directing, (2) guiding, …


Employee Engagement Through The Instructional Leadership Team, Stephen Juracka Dec 2018

Employee Engagement Through The Instructional Leadership Team, Stephen Juracka

Dissertations

ABSTRACT

The Instructional Leadership Team (ILT) is an organizational structure designed to improve employee engagement, which for this project is defined as employee collaboration, autonomy, ownership and shared purpose, in the curriculum development process (Farris-Berg, 2013). This program evaluation, grounded in organizational theory, self-determination theory, and social exchange theory; it is aimed at validating the importance of creating an organizational structure designed to shape a cultural environment that supports employee ownership and autonomy while creating a social exchange economy that supports employee motivation. The Instructional Leadership Team created and initiated the ILT Engagement Survey to K-5 grade level teachers in …


Good Agricultural Practices Training For Limited-Resource Produce Growers And Extension Educators, Agnes Kilonzo-Nthenge, John C. Ricketts, Dharma Pitchay Dec 2018

Good Agricultural Practices Training For Limited-Resource Produce Growers And Extension Educators, Agnes Kilonzo-Nthenge, John C. Ricketts, Dharma Pitchay

Journal of Extension

We delivered to growers and Extension educators a workshop addressing good agricultural practices (GAP) for produce safety. To assess the workshop's effects as applicable to behavioral intervention theory, we studied past behaviors, behavioral intentions, and changes in knowledge. Workshop participants had been aware of but did not fully understand certain GAP, such as implementing written food safety plans; after the workshop, both groups reported improved understanding of various concepts. Producers were mixed regarding intent to make GAP-related changes after workshop participation, whereas the educators overall were likely to make changes related to teaching GAP. We concluded that producers need more …


Business Sustainability: Moving From Thought To Action, Emily Skill, Roslynn Mccann Dec 2018

Business Sustainability: Moving From Thought To Action, Emily Skill, Roslynn Mccann

All Current Publications

This guide will help businesses develop a sustainability goal, understand the behavior changes necessary to meet goals, understand the behavior changes necessary to meet goals, provide successful techniques to achieve those behavior changes, and outline the implementation of a successful plan to reach those goals.


Business Sustainability: Moving From Thought To Action, Emily Skill, Roslynn Mccann Dec 2018

Business Sustainability: Moving From Thought To Action, Emily Skill, Roslynn Mccann

All Current Publications

This fact sheet describes what a sustainable business is and will help businesses develop a sustainability goal, understand the behavior changes necessary to meet that goal, provide techniques to achieve those behavior changes, and outline the implementation of a successful plan.


Palm Trees For Southern Utah, Rick Heflebower Dec 2018

Palm Trees For Southern Utah, Rick Heflebower

All Current Publications

This fact sheet gives information on selecting and growing the palm tree species recommended for the St. George area.


The Impact Of Pulmonary Hypertension In Preterm Infants With Severe Bronchopulmonary Dysplasia Through 1 Year., Joanne M. Lagatta, Erik B. Hysinger, Isabella Zaniletti, Erica M. Wymore, Shilpa Vyas-Read, Sushmita Yallapragada, Leif D. Nelin, William E. Truog, Michael A. Padula, Nicolas F M Porta, Rashmin C. Savani, Karin P. Potoka, Steven M. Kawut, Robert Digeronimo, Girija Natarajan, Huayan Zhang, Theresa R. Grover, William A. Engle, Karna Murthy, Children's Hospital Neonatal Consortium Severe Bpd Focus Group Dec 2018

The Impact Of Pulmonary Hypertension In Preterm Infants With Severe Bronchopulmonary Dysplasia Through 1 Year., Joanne M. Lagatta, Erik B. Hysinger, Isabella Zaniletti, Erica M. Wymore, Shilpa Vyas-Read, Sushmita Yallapragada, Leif D. Nelin, William E. Truog, Michael A. Padula, Nicolas F M Porta, Rashmin C. Savani, Karin P. Potoka, Steven M. Kawut, Robert Digeronimo, Girija Natarajan, Huayan Zhang, Theresa R. Grover, William A. Engle, Karna Murthy, Children's Hospital Neonatal Consortium Severe Bpd Focus Group

Manuscripts, Articles, Book Chapters and Other Papers

OBJECTIVES: To assess the effect of pulmonary hypertension on neonatal intensive care unit mortality and hospital readmission through 1 year of corrected age in a large multicenter cohort of infants with severe bronchopulmonary dysplasia.

STUDY DESIGN: This was a multicenter, retrospective cohort study of 1677 infants bornChildren's Hospital Neonatal Consortium with records linked to the Pediatric Health Information System.

RESULTS: Pulmonary hypertension occurred in 370 out of 1677 (22%) infants. During the neonatal admission, pulmonary hypertension was associated with mortality (OR 3.15, 95% CI 2.10-4.73, P < .001), ventilator support at 36 weeks of postmenstrual age (60% vs 40%, P < .001), duration of ventilation (72 IQR 30-124 vs 41 IQR 17-74 days, P < .001), and higher respiratory severity score (3.6 IQR 0.4-7.0 vs 0.8 IQR 0.3-3.3, P < .001). At discharge, pulmonary hypertension was associated with tracheostomy (27% vs 9%, P < .001), supplemental oxygen use (84% vs 61%, P < .001), and tube feeds (80% vs 46%, P < .001). Through 1 year of corrected age, pulmonary hypertension was associated with increased frequency of readmission (incidence rate ratio [IRR] = 1.38, 95% CI 1.18-1.63, P < .001).

CONCLUSIONS: Infants with severe bronchopulmonary dysplasia-associated pulmonary hypertension have increased morbidity and mortality through …


Risk Stratification Of Febrile Infants ≤60 Days Old Without Routine Lumbar Puncture., Paul L. Aronson, Marie E. Wang, Eugene D. Shapiro, Samir S. Shah, Adrienne G. Deporre, Russell J Mcculloh, Christopher M. Pruitt, Sanyukta Desai, Lise E. Nigrovic, Richard D. Marble, Rianna C. Leazer, Sahar N. Rooholamini, Laura F. Sartori, Fran Balamuth, Christopher Woll, Mark I. Neuman, Febrile Young Infant Research Collaborative Dec 2018

Risk Stratification Of Febrile Infants ≤60 Days Old Without Routine Lumbar Puncture., Paul L. Aronson, Marie E. Wang, Eugene D. Shapiro, Samir S. Shah, Adrienne G. Deporre, Russell J Mcculloh, Christopher M. Pruitt, Sanyukta Desai, Lise E. Nigrovic, Richard D. Marble, Rianna C. Leazer, Sahar N. Rooholamini, Laura F. Sartori, Fran Balamuth, Christopher Woll, Mark I. Neuman, Febrile Young Infant Research Collaborative

Manuscripts, Articles, Book Chapters and Other Papers

Video Abstract: media-1vid110.1542/5840460609001PEDS-VA_2018-1879

OBJECTIVES: To evaluate the Rochester and modified Philadelphia criteria for the risk stratification of febrile infants with invasive bacterial infection (IBI) who do not appear ill without routine cerebrospinal fluid (CSF) testing.

METHODS: We performed a case-control study of febrile infants ≤60 days old presenting to 1 of 9 emergency departments from 2011 to 2016. For each infant with IBI (defined as a blood [bacteremia] and/or CSF [bacterial meningitis] culture with growth of a pathogen), controls without IBI were matched by site and date of visit. Infants were excluded if they appeared ill or had a …


Genetic Predisposition To Necrotizing Enterocolitis In Premature Infants: Current Knowledge, Challenges, And Future Directions., Alain Cuna, Lovya George, Venkatesh Sampath Dec 2018

Genetic Predisposition To Necrotizing Enterocolitis In Premature Infants: Current Knowledge, Challenges, And Future Directions., Alain Cuna, Lovya George, Venkatesh Sampath

Manuscripts, Articles, Book Chapters and Other Papers

The role of genetics in the pathogenesis of necrotizing enterocolitis (NEC) was initially informed by epidemiological data indicating differences in prevalence among different ethnic groups as well as concordance in twins. These early observations, together with major advances in genomic research, paved the way for studies that begin to reveal the contribution of genetics to NEC. Using the candidate gene or pathway approach, several potential pathogenic variants for NEC in premature infants have already been identified. More recently, genome-wide association studies and exome-sequencing based studies for NEC have been reported. These advances, however, are tempered by the lack of adequately …


Application Of Nuclear Techniques To Environmental Plastics Research, Cm Lanctot, M Al-Sid-Cheikh, Ai Catarino, T Cresswell, Et Al Dec 2018

Application Of Nuclear Techniques To Environmental Plastics Research, Cm Lanctot, M Al-Sid-Cheikh, Ai Catarino, T Cresswell, Et Al

School of Biological and Marine Sciences

Plastic pollution is ubiquitous in aquatic environments and its potential impacts to wildlife and humans present a growing global concern. Despite recent efforts in understanding environmental impacts associated with plastic pollution, considerable uncertainties still exist regarding the true risks of nano- and micro-sized plastics (<5 mm). The challenges faced in this field largely relate to the methodological and analytical limitations associated with studying plastic debris at low (environmentally relevant) concentrations. The present paper highlights how radiotracing techniques that are commonly applied to trace the fate and behaviour of chemicals and particles in various systems, can contribute towards addressing several important and outstanding questions in environmental plastic pollution research. Specifically, we discuss the use of radiolabeled microplastics and/or chemicals for 1) determining sorption/desorption kinetics of a range of contaminants to different types of plastics under varying conditions, 2) understanding the influence of microplastics on contaminant and nutrient bioaccumulation in aquatic organisms, and 3) assessing biokinetics, biodistribution, trophic transfer and potential biological impacts of microplastic at realistic concentrations. Radiotracer techniques are uniquely suited for this research because of their sensitivity, accuracy and capacity to measure relevant parameters over time. Obtaining precise and timely information on the fate of plastic particles and co-contaminants in wildlife has widespread applications towards effective monitoring programmes and environmental management strategies.


The Role Of Response To Intervention In Michigan High Poverty Elementary Schools That Are Beating The Odds, Alina J. Fortenberry Dec 2018

The Role Of Response To Intervention In Michigan High Poverty Elementary Schools That Are Beating The Odds, Alina J. Fortenberry

Dissertations

The Michigan Department of Education has identified schools that are beating the odds as either schools that perform better than expected based on risk factors of race, ethnicity, low socioeconomics or/and English Language Learner populations, and/or also as schools performing above their comparison group of the most demographically similar schools in the state. Many districts in the state are attempting to incorporate multi-tiered systems of support with a Response to Intervention (RTI) Framework, as the academic component for assisting students in accomplishing skills needed to help them meet grade level expectations.

The purpose of this study is to describe and …


Relationships Between Social Network Characteristics, Alcohol Use, And Alcohol-Related Consequences In A Large Network Of First-Year College Students: How Do Peer Drinking Norms Fit In?, Graham T. Diguiseppi, Matthew K. Meisel, Sara G. Balestrieri, Miles Q. Ott, Melissa A. Clark, Nancy P. Barnett Dec 2018

Relationships Between Social Network Characteristics, Alcohol Use, And Alcohol-Related Consequences In A Large Network Of First-Year College Students: How Do Peer Drinking Norms Fit In?, Graham T. Diguiseppi, Matthew K. Meisel, Sara G. Balestrieri, Miles Q. Ott, Melissa A. Clark, Nancy P. Barnett

Statistical and Data Sciences: Faculty Publications

A burgeoning area of research is using social network analysis to investigate college students' substance use behaviors. However, little research has incorporated students' perceived peer drinking norms into these analyses. The present study investigated the association between social network characteristics, alcohol use, and alcohol-related consequences among first-year college students (N 1,342; 81% of the first-year class) at one university. The moderating role of descriptive norms was also examined. Network characteristics and descriptive norms were derived from participants' nominations of up to 10 other students who were important to them; individual network characteristics included popularity (indegree), network expansiveness (outdegree), relationship reciprocity, …


Cholesterol Metabolism And Statin Effects On An Fh Class Ii Ldl-Receptor Mutation., Linda Omer Dec 2018

Cholesterol Metabolism And Statin Effects On An Fh Class Ii Ldl-Receptor Mutation., Linda Omer

Electronic Theses and Dissertations

Familial hypercholesterolemia (FH) is a common genetic disease and has been studied with the aim of finding a curative measure for decades. FH is caused by mutations in the low-density lipoprotein receptor (LDLR) resulting in defects in LDL-cholesterol (LDL-C)-receptor mediated endocytosis and development of premature cardiovascular disease (CVD). Here I describe the use of a corrected and non-corrected LDLR FH cell model to investigate receptor-mediated endocytosis and statin effects. For these studies, we reprogrammed FH fibroblast cells to induced pluripotent stem cells (iPSC) and confirmed their pluripotency and ability to differentiate to hepatocyte-like cells (HLC). A clustered regularly interspaced short …


Japanese-English Translation: "Absolute-Contradictory Self-Identity"--Nishida Kitarō, Translated By Christopher Southward, Christopher Southward Dec 2018

Japanese-English Translation: "Absolute-Contradictory Self-Identity"--Nishida Kitarō, Translated By Christopher Southward, Christopher Southward

Comparative Literature Faculty and Student Scholarship

Complete draft translation of Nishida Kitarō’s “Absolute-contradictory Self-identity” (First published in Thought, No. 202, March, 1939, Iwanami Shoten, Tokyo, Japan) [「絶対矛盾的自己同一」、千九百三十九年三月初発、『思想』、岩波書店、東京]. Introduction, conceptual apparatus/glossary, substantive line edits, corrections, revisions, and notes underway. Please contact translator before citing. All rights reserved, Christopher Southward (2018). Source, Aozora Bunko (a digital archive of Japanese-language works in the public domain): Current text: https://www.aozora.gr.jp/cards/000182/files/1755_53374.html; General: https://www.aozora.gr.jp/


Insights Into The Reactivation, Regulation And Essentiality Of Oxidative Protein Folding Pathways In Actinobacteria, Belkys Sanchez Dec 2018

Insights Into The Reactivation, Regulation And Essentiality Of Oxidative Protein Folding Pathways In Actinobacteria, Belkys Sanchez

Dissertations and Theses (Open Access)

Accurate disulfide bond formation is important for proper folding, stability and function of exported proteins. The process of disulfide bond formation, termed oxidative protein folding, is catalyzed by thiol-disulfide oxidoreductase enzymes. Oxidative protein folding pathways influence processes essential for bacterial physiology and pathogenicity. In the Gram-positive actinobacterial pathogens Actinomyces oris and Corynebacterium diphtheriae oxidative protein folding is catalyzed by the primary thiol-disulfide oxidoreductase MdbA. MdbA is required for assembly of adhesive pilus, which mediate receptor-dependent bacterial interactions, or coaggregation, in A. oris. In the first part of this dissertation, I identify components of the electron transport chain (ETC) required for …


Associational Republicanism: Antifederalism In Context, 1790 - 1830, Ashley Jordan Dec 2018

Associational Republicanism: Antifederalism In Context, 1790 - 1830, Ashley Jordan

Masters Theses

No abstract provided.


Developing And Validating A Scale To Measure Youth Voice, Jessica Bartak Dec 2018

Developing And Validating A Scale To Measure Youth Voice, Jessica Bartak

Department of Agricultural Leadership, Education, and Communication: Dissertations, Theses, and Student Research

The purpose of this study is to develop and validate a scale to measure the level of engagement of youth in their community or organization using the construct of youth voice. Youth voice consists of three levels: being heard, collaborating with adults, and building leadership capacity. An initial list of 40 items were developed (13 being heard, 13 collaborating with adults, and 14 building leadership capacity). Youth development experts and youth leadership experts were invited to complete a survey to assess the content validity of the items developed for the youth voice scale. The data collected from 50 participants were …


Relationships Among Biodiversity Dimensions Of Birds In Nebraska, Nadejda Mirochnitchenko Dec 2018

Relationships Among Biodiversity Dimensions Of Birds In Nebraska, Nadejda Mirochnitchenko

School of Natural Resources: Dissertations, Theses, and Student Research

Biological diversity, or biodiversity, is a multi-dimensional concept that can be decomposed to measure information about taxonomic, phylogenetic, and functional variation within communities. Although the dimensions of biodiversity are interrelated, the assumption that measuring one dimension of diversity can inform about patterns in another dimension does not necessarily follow from theory or empirical study. The relationships among biodiversity dimensions is not well understood, nor how differences among dimensions could influence conservation decision making. Using the avian community as a study system, we explored the relationships of breadth metrics from the taxonomic, phylogenetic, and functional dimensions among each other and across …


The Biological Significance And Utility Of Feeding By Dermestes Maculatus, Braymond Adams Dec 2018

The Biological Significance And Utility Of Feeding By Dermestes Maculatus, Braymond Adams

School of Natural Resources: Dissertations, Theses, and Student Research

With their efficient feeding habits and tolerance to very low moisture and humidity, beetles in the Family Dermestidae are especially adapted to variable environments and habitats. Dermestid cultures have been in use since 1922 in cleaning tissue and flesh from bones, and proven benefit in multiple fields, including zoology, ornithology, and forensics. Dermestid feeding behaviors when coupled with known life stage and insect succession information aids in providing significant entomological evidence. However, the feeding activities of insects, like those of vertebrate scavengers and predators, change remains and may leave artifacts that can be sometimes be difficult to assign to a …


Role Of Misclassification Estimates In Estimating Disease Prevalence And A Non-Linear Approach To Study Synchrony Using Heart Rate Variability In Chickens, Dola Pathak Dec 2018

Role Of Misclassification Estimates In Estimating Disease Prevalence And A Non-Linear Approach To Study Synchrony Using Heart Rate Variability In Chickens, Dola Pathak

Department of Statistics: Dissertations, Theses, and Student Research

Infectious disease assays can be imperfect. When estimating disease prevalence, these imperfections are accounted for by incorporating assay sensitivity and specificity into point and variance estimates. Unfortunately, these accuracy measures are often treated as fixed constants, rather than acknowledging that they are estimates from an assay validation process. The purpose of this study is to show the detrimental effect of not taking into account this sampling variability when samples are obtained through group testing (aka, pooled testing). We show that confidence interval coverage can dramatically decline as the sample size increases for the main sample of interest. As a remedy …


Variable Rate Irrigation Using A Spatial Evapotranspiration Model With Remote Sensing Imagery And Soil Water Content Measurements, Sandeep Bhatti Dec 2018

Variable Rate Irrigation Using A Spatial Evapotranspiration Model With Remote Sensing Imagery And Soil Water Content Measurements, Sandeep Bhatti

Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research

Variable rate irrigation may help in intensification of agriculture by producing more yield per unit inputs. Real time spatial information about water balance components is important for designing VRI prescription maps. This work involved use of a spatial evapotranspiration model for studying spatial variability in an agricultural field at the Eastern Nebraska Research and Extension Center near Mead, Nebraska. Imagery from unmanned aerial systems and Landsat were used as input for the spatial evapotranspiration model. Other inputs into the model were soil water content measurements from neutron probes, weather data, crop data, previous irrigation prescriptions, and soil properties for the …