Digital Commons Network^™

Cfd Modeling Of Smoke Movement In An Atrium, Robin Wu

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this paper is to better understand the behavior of smoke movement in an atrium. Thus gives first responders and civilians in and out of building a better understanding

With the advancements of modern technology, computers and softwares make simulation models possible such as fire models to simulate fire and smoke movements. In this paper, a computational fluid dynamic (CFD) software Fire Dynamic Simulator (FDS) is used to conduct a series of atrium tests to investigate the effectiveness of smoke exhaust systems. FDS solves the Navier-Stokes equations appropriate for low speed flows (Ma < 0.3) with an emphasis on smoke, heat transport and CO2 concentrations from fires. The default turbulence model used in FDS simulation is the Large Eddy Simulation (LES), which is the solution of Navier-Stokes equations at low speed.

The compartment tested was 9 …

Uas-Based Object Tracking Via Deep Learning, Marc Dinh

UNLV Theses, Dissertations, Professional Papers, and Capstones

Tracking is the task of identifying an object of interest and detect its position over time, and has numerous applications like surveillance, security and traffic control. In present times, unmanned aerial vehicles (UAV) have been more and more common which provides us with a new and less explored domain, with an ideal vantage point for surveillance and monitoring applications.. Aerial tracking is a particularly challenging task as it introduces new environmental variables such as rapid motion in 3D space. We propose a new deep learned tracker architecture catered to aerial tracking.

First, a study of six state-of-the-art deep learned trackers …

Comparison Of Cervical Angle During Different Equipment Removal Techniques Used In Ice Hockey For Suspected Cervical Injuries, Kendell Sarah Galor

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of the study was to compare cervical movement between two different methods of removal of the helmet and shoulder pads. Seven college age male subjects (height: 172.54 ± 7.98 cm; weight: 85.70 ± 15.75 kg) with hockey experience volunteered to participate in the study. Each subject agreed to and signed the institutional review board approved informed consent before articipation. Subjects used their own game fit hockey helmet and were fitted with a pair of shoulder pads (CCM Tacks 1052 Sr Shoulder Pads). Cervical spine motion was measured using 3D kinematics (Vicon Motion Systems Ltd., UK). Reflective markers affixed …

Calculation Of Access Charge For High Speed Rail Xpresswest Of Nevada, Sameeksha Sapkota

UNLV Theses, Dissertations, Professional Papers, and Capstones

XpressWest is a High Speed Rail (HSR) system that plans to connect Las Vegas with California at Palmdale. It will utilize the railway network of the California High Speed Rail (CAHSR) to connect Las Vegas with California destinations that include Los Angeles and San Francisco. For sharing the railway network of CAHSR, XpressWest will pay certain charge known as an access charge. The access charge is the fee paid by the train operator to the infrastructure owner for the addition of trains in a track. There are several access charge systems in the world. However, there is no study that …

The Effect Of Instructors Training On Technology Adoption, Course Design, And Student Experiences: A Multiple Case Study Of Training Based On Tpack Or Quality Matters, Yvette Aqui

UNLV Theses, Dissertations, Professional Papers, and Capstones

The use of a Learning Management System (LMS) such as Blackboard Learn (Blackboard Learn, 2009) is a ubiquitous feature of the undergraduate experience. Despite its rapid increase in popularity and student demand for anytime, anywhere access to course materials, adoption of the LMS is slow and uneven. Some instructors also do not take advantage of some of the interactive tools in the LMS because it is complex in nature or they are unaware of the pedagogical affordances of the technology.

The purpose of this study was to explore the best ways to train faculty on how to use the LMS. …

A Phenomenological Study On The Professional Development Of African American Male Administrators At Predominately White Post-~Secondary Institutions, Arnold Shmorn Bell

UNLV Theses, Dissertations, Professional Papers, and Capstones

As of today, African Americans continue to face a daunting endeavor when seeking to become executive administrative leaders at predominately White post-secondary institutions, even though, according to Tillman (2001), “Mentoring was identified as a technique to assist the professional advancement of African American faculty. In doing so, their numbers will increase at predominantly White institutions” (p. 295). Literature steadily indicates that mentorship contributes to one’s career development in the post-secondary environment. The influential aspects of mentorship on one’s professional development is supported by numerous studies that examines mentoring relationships across various academic disciplines and businesses in corporate America (Brown, 2005). …

Cassava Farming Practices And Their Agricultural And Environmental Impacts: A Systematic Map Protocol, Gorm E. Shackelford, Neal R. Haddaway, Hope O. Usieta, Pieter Pypers, Silviu O. Petrovan, William J. Sutherland

All Peer-Reviewed Publications

Background: Cassava (Manihot esculenta) is a staple crop that is important for food security in the tropics. However, cassava farming can have severe environmental impacts, such as habitat destruction and soil degradation, if it is not carefully managed. Therefore, a wide range of agricultural and environmental outcomes should be considered when cassava farming practices are recommended as "good agricultural practices". We propose a systematic map of research on cassava farming practices and their impacts on yield, quality, profitability, soil, water, wildlife, pathogens, pests, weeds, and other agricultural and environmental outcomes. This map will improve our knowledge of the multifunctionality of …

Triple Bottom Line As A Method To Increase Business Value And Foster Positive Social And Environmental Change, Jayleene West

Master's Theses

The Triple Bottom Line (TBL) business model has transformed the business world by changing the way businesses operate. By focusing on the people and the environment, businesses have grown to see substantial profit and avoid risks along the way. Companies are using the TBL to build their brand and customer loyalty by enhancing the environment and society. This paper analyzes four companies that are leaders in their industry and are founded on the TBL; Seventh Generation, New Belgium Brewing, Patagonia, and Ben & Jerry’s. Recommendations have been made by performing a literature review on the advantages and disadvantages of the …

Effect Of Curing Conditions On Mechanical Properties And Durability Of Concrete, Edgar Lazaro Salas-Borrero

UNLV Theses, Dissertations, Professional Papers, and Capstones

This thesis presents the results for three different concrete mix designs with compression strengths of 4500 psi. The experiment was conducted in the Las Vegas area during the summer, from August 16th to October 12th, 2018, where temperatures and relative humidity was recorded daily, three times a day. In total, 135 concrete specimens (4” x 8”) were taken on site and were subjected to five different curing conditions.

For each concrete mix design, three concrete samples (4” x 8”) were taken and submitted for each curing condition, resulting in 45 cylinders for each concrete mix design. The same number of …

Supranational Identity Politics: Sovereignism In The Eu, Emilio Jacintho

UNLV Theses, Dissertations, Professional Papers, and Capstones

The implementation of identity politics policies conceived at a supranational level appears to motivate the coordination of populist movements, the radicalization of their discourses, and an increasing resentment towards minority groups. I investigate the reaction of populist sovereignist political movements, among recently admitted EU member states, to the implementation of European Union policies that involve the positive discrimination of minority groups and mandated refugee relocations. The implementation of such policies seems to have contributed to the resentment toward policy-favored minorities, the increase of anti-immigration values, the success of extremist political expressions, and the mistrust of political institutions and traditional parties. …

Combining Footprinting Mass Spectrometry And Molecular Dynamics Simulation For Structural Studies In Membrane Proteins, Fengbo Zhou

Arts & Sciences Graduate Student Theses and Dissertations

Membrane proteins are essential in many cellular processes and represent ~60% of all current drug targets. Due to technical limits, membrane proteins of various types were not studied extensively in the past and the biochemistry and functionality of them remain unclear. The structural biology methodologies require pure isolated protein samples for us to resolve their structure and study their biochemical functions. For such in vitro studies, however, membrane proteins often become unstable when isolated from their native lipid bilayer environment. To overcome the challenge, I employed a novel methodology of solubilizing membrane proteins in solution without detergent. I reconstituted ferroportin, …

2018 Fall Commencement, Harding University

Commencement Programs

Program for the Harding University Commencement on December 15.

Commencement Speaker: Joel Anderson

Radiolabeled Nanohydroxyapatite As A Platform For The Development Of New Pet Imaging Agents, Stacy Lee Queern

Arts & Sciences Graduate Student Theses and Dissertations

Positron emission tomography (PET) imaging utilizes drugs labeled with positron emitters to target and evaluate different biological processes occurring in the body. Tailoring medicine to the individual allows for higher quality of care with better diagnosis and treatment and is a key purpose for advancing research into developing new platforms for PET imaging agents. A PET nuclide of high interest for the development of these agents is 89Zr. This can be attributed to the long half-life of 3.27 days and low positron energy of 89Zr.In this work, we developed a production method for 89Zr using Y sputtered coins that is …

Anodic Cyclization Reaction: Manipulation Of Reaction Pathway And Efforts To Radical Cation And Radical Intermediate, Ruozhu Feng

Arts & Sciences Graduate Student Theses and Dissertations

In recent years, synthetic chemists have been expressing significant interest in electro-organic synthetic methods. This interest is being fueled by the existence of an increasing number of successful methods in the literature and the availability of new electrochemical equipment that removes the barrier to attempting an electrolysis reaction for the first time. Yet while these developments have fueled growth in some areas of electro-organic synthesis (the recycling of chemical catalysts for example), other areas remain underdeveloped. One such area is the exploration of reactions that can be triggered directly as an electrode surface without the use of any chemical reagent. …

Linking Structure And Dynamics In Metallic Liquids: A Combined Experimental And Molecular Dynamics Approach, Robert Ashcraft

Arts & Sciences Graduate Student Theses and Dissertations

A major outstanding problem in condensed matter physics is the nature of the glass transition, in which a rapidly cooled liquid can bypass the transition into a crystalline state and the liquid structure is "frozen-in" due to kinetic arrest. To characterize the fundamental features behind this transition the liquid, both in the high temperature (equilibrium) and supercooled state, needs to be better understood. By examining the relationship between structure and dynamics a better characterization of the liquid state and a determination of the mechanisms that are ultimately important for the formation of the glass can be gained. In this dissertation, …

Singing As A Therapeutic Technique To Improve Gait For People With Parkinson Disease, Elinor Harrison

Arts & Sciences Graduate Student Theses and Dissertations

Abstract of the DissertationSinging as a Therapeutic Technique toImprove Gait for People with Parkinson DiseasebyElinor Clare HarrisonDoctor of Philosophy in Movement ScienceNeurosciencesWashington University in St. Louis, 2018Professor Gammon Earhart, ChairGait impairment is common in older adults and even more prevalent for people with Parkinson disease (PD). Gait dysfunction is often characterized by reductions in speed, step frequency, and step length. In addition, decreased ability to regulate step length and step frequency may contribute to increased gait variability, making walking less stable and increasing risk for falls. As gait deficits are often resistant to drug therapy, there is a need to …

Stability Of A Spinning Triangle Tethered Spacecraft System In A Circular Orbit, Matthew James Heitstuman

Mechanical Engineering ETDs

Equations of motion are derived for a spinning triangle tethered spacecraft system and are used to analyze the stability of such systems. Floquet theory is applied to the linearized, periodic coefficient, equations of motion to analyze spin stability as a function of triangle geometry and the average spin rate of the satellite relative to the angular velocity of the spacecraft orbiting around a central body. The results of the Floquet analysis show that spin stability is achievable for many combinations of spacecraft geometry and spin rate. Spacecraft engineers or operators for a triangle-shaped tethered spacecraft can use this information for …

Application Of Ict To Cataloguing And Classification For Effective Bibliographic Control In The National Library Of Nigeria: Issues And Challenges, Juliana Obiageri Akidi Phd, Cln, Chinyere A. Okezie Phd, Cln

Library Philosophy and Practice (e-journal)

The study examines the application of information and communication technology (ICT) to cataloguing and classification for effective bibliographic control, with a focus on the National Library of Nigeria as the bibliographic control agency of the nation. The study was guided by six objectives. The research design adopted was survey research method. Population of study was 33 cataloguers, while the sampling technique was complete census of cataloguers in the National Library of Nigeria (NLN), as the population was manageable. The instrument for data collection was structured questionnaire, comprising forty-two item statements in six clusters. Method of data analysis involved the use …

The Role Of Information Literacy In The Actualization Of Healthy Living: A Case Study Of Abia State, Juliana Obiageri Akidi Phd, Cln

Library Philosophy and Practice (e-journal)

The study examines the role of information literacy in the actualization of healthy living in Nigeria, with a special focus on Abia State. Information literacy is viewed as the ability to recognise the need for information, identify and locate appropriate sources of information, access the information, evaluate and use it effectively. Information literacy empowers people to have skills that will assist them to become independent lifelong learners, with better decision making abilities, especially in healthy living. Healthy living is defined as maintaining a state of complete physical, mental, and social well-being, which is not necessarily devoid of disease or infirmity. …

Chemically Modified Monolayer Surfaces Influence Valvular Interstitial Cell Attachment And Differentiation For Heart Valve Tissue Engineering, Matthew N. Rush

Nanoscience and Microsystems ETDs

As a cell mediated-process, valvular heart disease (VHD) results in significant morbidity and mortality world-wide. In the US alone, valvular heart disease VHD is estimated to affect 2.5% of the population with a disproportionate impact on an increasing elderly populous. It is well understood that the primary driver for valvular calcification is the differentiation of valvular interstitial cells (VICs) into an osteoblastic-like phenotype. However, the factors leading to the onset of osteoblastic-like VICs (obVICs) and resulting calcification are not fully understood and a more complete characterization of VIC differentiation and phenotypic change is required before treatment of valve disease or …

Table Of Contents (V. 27, No. 2)

William & Mary Bill of Rights Journal

No abstract provided.

Optimal Placement Of Distributed Energy Storage Systems In Distribution Networks Using Artificial Bee Colony Algorithm, Choton K. Das, Octavian Bass, Ganesh Kothapalli, Thair S. Mahmoud, Daryoush Habibi

Research outputs 2014 to 2021

The deployment of utility-scale energy storage systems (ESSs) can be a significant avenue for improving the performance of distribution networks. An optimally placed ESS can reduce power losses and line loading, mitigate peak network demand, improve voltage profile, and in some cases contribute to the network fault level diagnosis. This paper proposes a strategy for optimal placement of distributed ESSs in distribution networks to minimize voltage deviation, line loading, and power losses. The optimal placement of distributed ESSs is investigated in a medium voltage IEEE-33 bus distribution system, which is influenced by a high penetration of renewable (solar and wind) …

Civil Rights Notes: American Indians And Banishment, Jury Trials, And The Doctrine Of Lenity, Grant Christensen

William & Mary Bill of Rights Journal

No abstract provided.

The Esquire Case: A Lost Free Speech Landmark, Samantha Barbas

William & Mary Bill of Rights Journal

No abstract provided.

The Father Of Modern Constitutional Liberalism, John Lawrence Hill

William & Mary Bill of Rights Journal

No abstract provided.

The Superior Solution To The “Denominator Problem” — Comparing The Majority And Dissent’S Property Benchmark Tests In Murr V. Wisconsin With A Focus On Property Owners’ Reasonable Expectations, Rosemary K. Mcguirk

William & Mary Bill of Rights Journal

No abstract provided.

Who’S Your Sovereign?: The Standing Doctrine Of Parens Patriae & State Lawsuits Defending Sanctuary Policies, Lexi Zerrillo

William & Mary Bill of Rights Journal

No abstract provided.

A Reparative Justice Approach To Assessing Ancestral Classifications Aimed At Colonization’S Harms, Susan K. Serrano

William & Mary Bill of Rights Journal

No abstract provided.

Selected Bibliography For The Study Of Belief In Contemporary Global Capitalism, Fu-Jen Chen, Su-Lin Yu

CLCWeb: Comparative Literature and Culture

No abstract provided.

Decolonizing Adoption Narratives For Transnational Reproductive Justice, Sung Hee Yook, Hosu Kim

CLCWeb: Comparative Literature and Culture

In their article “Decolonizing Adoption Narratives for Transnational Reproductive Justice,” Sung Hee Yook and Hosu Kim examine narratives emerging from transnational adoption practices, focusing on how birth mothers’ narratives—in which a victim-mother makes choices to give a child for adoption in hopes of a better life for the child, and awaits that child’s return—develop alongside and deviate from the normative orders of motherhood. While birth mothers’ self-transformative narrative illuminates their subjectivities—apart from victimhood, simmering in the latent form of agency—Yook and Kim argue that a compelling narrative of self-mastery produces another discursive trap which renders the numerous less-masterful birth mothers …