Art Imitating Life: How A Biology Student Uses Embroidery To Learn In Her Own Way, Haley Herfurth

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No abstract provided.

An Examination Of Leadership Needs, Preparation, And Expectations In Rural Indigenous Communities, Roselyn Carroll-Trujillo

Teacher Education, Educational Leadership & Policy ETDs

ABSTRACT Every single person has leadership ability. Some step up and take them. Some don't. My answer was to step up and lead. ̴Wilma Mankiller ̴ How well prepared are New Mexico school leaders to serve in leadership positions in rural communities with high ratios of Indigenous populations? In this study, I utilized an Indigenous research paradigm to explore policy, reciprocal relationships, licensure requirements in one state, and perceptions from a variety of individuals in rural communities to develop an understanding of what is necessary to create and sustain successful school leadership in an Indigenous community. An Indigenous paradigm of …

Rapid Source To Sink Transition In A Mixed-Conifer Forest Following Stand-Replacing Fire, Ryan Matthew Schulze

Biology ETDs

Mixed-conifer forests play an important role in the Southwestern USA’s regional carbon cycle by sequestering and storing large amounts of atmospheric carbon onto the landscape. Despite this, little is known about how large, stand-replacing fire alters ecosystem carbon sink-source dynamics. In this study, we used eddy covariance to quantify how stand-replacing fire altered forest sink strength, and the sensitivity of carbon uptake to soil and atmospheric drought in a mixed-conifer forest located in The Valles Caldera National Preserve, NM. We found that the post-burn ecosystem returned to an annual net sink of carbon in the year immediately following the fire, …

Subject Disintegration: Identity And Alterity In The Age Of The Hyperreal, Sophie Ell

American Studies ETDs

What do the signs “identity” and “alterity” point to within the economy of representation and the logic of simulation that govern the present era? How does the visual saturation of a screen-mediated life affect the study of identity? Where does the information overload within which we operate leave the production of knowledge about otherness? My goal in this project is not to resolve these questions, but rather to linger in them. Focusing on various portrayals of categorical identities in film, photography, and digital media, I utilize a semiotic analysis to examine the formulaic, repetitive maneuvers of signification practices that reproduce …

A Banner Gift, Uab Heersink School Of Medicine News

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No abstract provided.

Footprint For New Genomic Medicine Building Takes Shape, Uab Heersink School Of Medicine News

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Uab Steps Into The Spotlight, Uab Heersink School Of Medicine News

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No abstract provided.

Curriculum Changes Reflect Modern Medical Landscape, Uab Heersink School Of Medicine News

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Live Healthsmart Alabama And Bl Harbert Kick Off Revitalization Efforts In Bush Hills, Adam Pope

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No abstract provided.

Chen Recognized By Association For Computing Machinery For 'Outstanding Scientific Contributions To Computing', Matt Windsor

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An Examination Of Nurses' Schedule Characteristics, Recovery From Work, And Well-Being, Sarah Elizabeth Van Dyck

Dissertations and Theses

Recovery from work refers to the replenishment of energetic and affective resources depleted while meeting job demands, predominately conceptualized as a process that unfolds throughout the day. This study examined the shift work schedule demands presented by round-the-clock patient care needs on health care providers, and potential recovery opportunities during mid-shift meal and rest breaks. The cross-sectional data were collected via electronic questionnaire among registered nurses (N = 134) working in direct patient care roles in 24-hour healthcare organizations in the Northwestern United States (91.0% female-identified; mean age = 45.3 years). The main effects of adverse scheduling characteristics common …

Robotic Olfactory-Based Navigation With Mobile Robots, Lingxiao Wang

Doctoral Dissertations and Master's Theses

Robotic odor source localization (OSL) is a technology that enables mobile robots or autonomous vehicles to find an odor source in unknown environments. It has been viewed as challenging due to the turbulent nature of airflows and the resulting odor plume characteristics. The key to correctly finding an odor source is designing an effective olfactory-based navigation algorithm, which guides the robot to detect emitted odor plumes as cues in finding the source. This dissertation proposes three kinds of olfactory-based navigation methods to improve search efficiency while maintaining a low computational cost, incorporating different machine learning and artificial intelligence methods.

A. …

Numerical Simulation Of A Cryogenic Spray, Neel Kishorkumar Shah

Doctoral Dissertations and Master's Theses

Cryogenic sprays have many applications in modern engineering. Cooling of electronic equipment subject to high heat flows, surgical ablation of gastrointestinal mucosae or orbital maneuvering are a few examples of their versatility. However, the atomization of a cryogenic liquid is a complex process. During such an event, aerodynamic effects associated with secondary atomization are further affected by thermodynamic flashing. A better understanding of the characteristics of cryogenic sprays is then necessary to allow for improved design and optimization in applications. The overarching objective of this study is to document such characteristics. The numerical simulation was performed over cryogenic nitrogen spray …

In-Situ Monitoring Of Additive Manufacturing Using Digital Image Correlation, Martina Jani

Doctoral Dissertations and Master's Theses

Advances in additive manufacturing over the past decade have led to applications in multiple fields. In particular, additive manufacturing answers the need for high flexibility in designing complex structures, however, the rapid thermal fluctuations during processing lead to numerous defects and processing-induced residual stresses. In this research, an in-situ approach using Digital Image Correlation (DIC) is developed to monitor the deformation during the processing, and thereby analyze the formation of defects and residual stresses. DIC is a visual technique that compares the changes in speckle pattern in consecutive images of a specimen to determine the displacements and strains. This research …

Noise And Time Pressure Effects On Situation Awareness And Aviation Maintenance Tasks, Syaza R. M. Haris

Doctoral Dissertations and Master's Theses

Aircraft maintenance technicians (AMTs) working in a line maintenance work setting are very susceptible to the deafening occupational noise from the airport vicinity or the maintenance machinery itself. Compared to a base maintenance working period, a line maintenance job requires AMTs to complete a task within a short time frame. The current study's objective is to determine if different noise levels and time pressure influence AMTs' performance and situation awareness (SA). Sixteen Embry-Riddle Aeronautical University students majoring in Aviation Maintenance Science participated in a within-subject experimental design. Each participant's performance, SA level, and perceived workload were measured during maintenance tasks …

Contextual Considerations Of Green Stormwater Infrastructure Siting, Dexter H. Locke, Amanda K. Phillips De Lucas, Colleen Murphy-Dunning, Dawn Henning, Giovanni Zinn

Cities and the Environment (CATE)

Green infrastructure increasingly is used to ameliorate water quality and quantity problems caused by runoff in cities. Studies show how the spatial distribution of these Green Stormwater Infrastructure (GSI) sites are unevenly distributed relative to socioeconomic and demographic groups. Often this is described as an indicator of perpetuated environment injustice, given the purported social and environmental benefits of GSI. To assess equity, researchers often examine either who gets what with respect to environmental ‘goods’ such as tree canopy and other green infrastructures, or investigate the procedures, decision making processes, and power structures pertaining to planning processes. This paper uses both …

Civic Environmental Stewardship: Aligning Organizational And Participant Motivations, Kathleen L. Wolf, Weston Brinkley, Dale J. Blahna

Cities and the Environment (CATE)

Natural area management and sustainability in cities is ever more reliant on civic environmental stewardship. Many conservation organizations sponsor stewardship programs that enlist volunteers to care for the land and restore urban ecosystems. Stewardship program success depends on alignment of individuals’ and sponsoring organizations’ goals. We conducted surveys with a sample of 165 volunteers across natural areas stewardship events in metropolitan King County (Washington, U.S.). An adapted Volunteer Functions Inventory framework was used to understand volunteers’ motivations, satisfactions, and volunteering history. Our findings confirmed the multidimensional dynamics of volunteerism, as stewardship volunteers were motivated and expressed satisfaction for practical altruism, …

Risk Factors For Poor Outcomes Among Patients With Extensively Drug-Resistant Tuberculosis (Xdr-Tb): A Scoping Review, Karan Varshney, Beverly Anaele, Matthew Molaei, Rosemary Frasso, Vittorio Maio

College of Population Health Faculty Papers

In recent years, there has been an upsurge in cases of drug-resistant TB, and strains of TB resistant to all forms of treatment have begun to emerge; the highest level of resistance is classified as extensively drug-resistant tuberculosis (XDR-TB). There is an urgent need to prevent poor outcomes (death/default/failed treatment) of XDR-TB, and knowing the risk factors can inform such efforts. The objective of this scoping review was to therefore identify risk factors for poor outcomes among XDR-TB patients. We searched three scientific databases, PubMed, Scopus, and ProQuest, and identified 25 articles that examined relevant risk factors. Across the included …

Attenuating Effect Of Vitamin E Against Silver Nano Particles Toxicity In Submandibular Salivary Glands, Mahmoud Bakr, Mahmoud Al Ankily, Sara M. Shogaa, Mohamed Shamel

Dentistry

Open AccessArticle

Attenuating Effect of Vitamin E against Silver Nano Particles Toxicity in Submandibular Salivary Glands

Design And Development Of A Mobile Health (Mhealth) Platform For Dementia Prevention In The Prevention Of Dementia By Mobile Phone Applications (Prodemos) Project, Melanie Hafdi, Esmé Eggink, Marieke P. Hoevenaar-Blom, M. Patrick Witvliet, Sandrine Andrieu, Linda Barnes, Carol Brayne, Rachael Brooks, Nicola Coley, Jean Georges, Abraham Van Der Groep, Harm Van Marwijk, Mark Van Der Meijden, Libin Song, Manshu Song, Youxin Wang, Wenzhi Wang, Wei Wang, Anders Wimo, Xiaoyan Ye, Eric P. Moll Van Charante, Edo Richard, Prodemos Consortium

Research outputs 2014 to 2021

Background:

Mobile health (mHealth) has the potential to bring preventive healthcare within reach of populations with limited access to preventive services, by delivering personalized support at low cost. Although numerous mHealth interventions are available, very few have been developed following an evidence-based rationale or have been tested for efficacy. This article describes the systematic development of a coach-supported mHealth application to improve healthy lifestyles for the prevention of dementia and cardiovascular disease in the United Kingdom (UK) and China.

Methods:

Development of the Prevention of Dementia by Mobile Phone applications (PRODEMOS) platform built upon the experiences with the Healthy Aging …

Flax/Acrylic Flow Turbine Blade Manufactured By In Situ Polymerisation (Isp) Monomer Infusion Under Flexible Tooling (Mift), Y Qin, R Cullen, John Summerscales, Jasper Graham-Jones, Maozhou Meng, Richard Pemberton

School of Engineering, Computing and Mathematics

A flax fabric reinforced acrylic thermoplastic matrix component has been manufactured as two half blades (front and back respectively) with the parts bonded together with a wood dust acrylic polymer to produce a component with the same thermoplastic polymer used for the composite matrix and the adhesive. The mould profile is for a floating offshore wind (FLOW) turbine blade at scale 1:50. This model represents the NREL 5 MW reference wind turbine. The blades are not scaled geometrically, but instead have been adapted to produce Froude scaled thrust, in spite of much lower Reynolds numbers at reduced scale and when …

Synthetic Aperture Optical Imaging Interferometric Microscopy With Improved Image Quality, Preyom K. Dey

Electrical and Computer Engineering ETDs

The resolution limit of optical microscopy can be extended by using Imaging Interferometric Microscopy (IIM), which uses a low numerical aperture (NA) objective lens to achieve resolution equivalent to that of a high-NA objective lens with multiple sub-images. Along with the resolution enhancement challenge, IIM often suffers from poor image quality. In this dissertation, several image quality improvement methods are proposed and verified with simulation and experimental results. Next, techniques to extend the resolution limit of IIM to ≤ 100nm using a low-NA objective lens are demonstrated. An experimental technique of using a grating coupler on …

Behaviour Of Rotating Field In Slip-Ring Induction Motors With Chopper Control., Hassan Abou-Tabl

Mansoura Engineering Journal

Stator currents of slip-ring induction motor having chopper control in the rotor circuit, are no more sinusoidal. The analysis of the air-gap resultant field , due to such currents , results in a different expression for the established rotating field. The derived expression is examined in order to study the rotating field behavior under chopper control. In addition to some of the well known behaviours , a new one had been distinguished and proved by constructing the geometrical pattern of the air-gap resultant field. An effective winding factor is introduced to give the effect of nonsinusoidal stator currents on the …

Phase 3 Safety And Efficacy Of Azd1222 (Chadox1 Ncov-19) Covid-19 Vaccine, Merlin L Robb, Julie Hunt, Mark J Mulligan, Charlene Mcevoy, Edwin Dejesus, Michael Hassman, Susan J Little, Barbara A Pahud, Anna Durbin, Paul Pickrell, Eric S Daar, Larry Bush, Joel Solis, Quito Osuna Carr, Temitope Oyedele, Susan Buchbinder, Jessica Cowden, Sergio L Vargas, Alfredo Guerreros Benavides, Robert Call, Michael C Keefer, Beth D Kirkpatrick, John Pullman, Tina Tong, Margaret Brewinski Isaacs, David Benkeser, Holly E Janes, Martha C Nason, Justin A Green, Elizabeth J Kelly, Jill Maaske, Nancy Mueller, Kathryn Shoemaker, Therese Takas, Richard P Marshall, Menelas N Pangalos, Tonya Villafana, Antonio Gonzalez-Lopez

Faculty, Staff and Student Publications

BACKGROUND: The safety and efficacy of the AZD1222 (ChAdOx1 nCoV-19) vaccine in a large, diverse population at increased risk for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in the United States, Chile, and Peru has not been known.

METHODS: In this ongoing, double-blind, randomized, placebo-controlled, phase 3 clinical trial, we investigated the safety, vaccine efficacy, and immunogenicity of two doses of AZD1222 as compared with placebo in preventing the onset of symptomatic and severe coronavirus disease 2019 (Covid-19) 15 days or more after the second dose in adults, including older adults, in the United States, Chile, and Peru.

RESULTS: …

Carrier Systems On Overhead Power Lines., Mohamed Mohamed Tantawy, Reda El-Dewieny

Mansoura Engineering Journal

This paper presents a comprehensive study into the application of carrier systems to overhead power transmission lines. The use of carrier systems for the purpose of telemetering as well as in protection schemes, is discussed. Different coupling methods are illustrated and a comparison is included.

Prediction Of E.M.F. Variation Due To Shifting The Resultant Field In Dwr Synchronous Generator., Hassan Abou-Tabl

Mansoura Engineering Journal

In this paper the e.m.f. equation of an idealized synchronous generator, having a divided-winding-rotor, is derived. The equationis obtained in two alternative forms whereby the effect of shifting the resultant field around the rotor on the sinusoidal induced e.m.f. can be approached. Shifting the resultant field axis from its original diraction results actually in considerable distortion in the resultant no – load m.m.f. distribution. This distortion affects the induced e.m.f. , as exhibited by the measured values on machine model . A comparative study of the results, obtained by applying the method of harmonic analysis to the different m.m.f. waveforms …

Control Of Hvdc Bridges Under Light Load Conditions., E. El-Konyaly, Youssif Abed, Mahmoud Kandil

Mansoura Engineering Journal

The performance of a HVDC transmission system under light load conditions is investigated. Two types of control schemes are used , namely constant igintion delay and constant power factor. The study has been carried out as a digital simulation. An algorithm is designed to arrive at the results. It has been shown that a reactive power is needed to reduce the over voltages induced across the bridges. This reactive power requires more switching operation in case of ignition delay angle however smaller in magnitude than in case of power factor angle. It has been advised that for reliability of operations …

Sensitivity Of System Reliability Indices To Forecasted Load Uncertainty., Mohamed Mohamed Tantawy

Mansoura Engineering Journal

The paper presents a comprehensive analysis for the affect of forecasted peak load uncertainty on power system reliability . The uncertainty is described by a normal distribution and the forecasted load is represented by its mean and standard deviation . Equations for the loss of load expectation and variance in terms of peak load uncertainty are given. These equations are distinguished by simplicity and low computer time required for computations. Senstivity analysis for the reliability indices due to finite changes in system loading is introduced.

Solar Energy Conversion., Youssif Abed, Mohamed Mohamed Tantawy

Mansoura Engineering Journal

The paper presents a survey for the methods of generating the electric energy from the solar energy , These methods are devided according to the influence of incident light on the different materials into direct and indirect methods. In the first , the solar energy is converted directly to electricity by means of solar cells , without any byproducts and without any moving parts. The indirect conversion of solar energy into electricity is done through intermediate stage , such as thermal , mechanical and chemical . Each of these methods is discussed in details and comparison between them is done …

Experimental Investigation Of Leakage Current In Power Cables Under Different Operating Conditions., Youssif Abed

Mansoura Engineering Journal

This paper reports an expermintal investigation into the effect of different factors on the leakage current in power cables. The leakage current of different cables was studied using installed cables under actual operating conditions and also cable samples in HV-laboratory under well-controlled conditions. The results obtained showed that, the leakage current in any power cable depends on many factors, including the value and type of the applied voltage, time of voltage application, cable type and construction, and the type of the surrounding soil and its resistivity. These results showed also that leakage current in power cables can be considered as …