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2019

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Schools As Providing Transformational Goods, Sasha Barab Dec 2019

Schools As Providing Transformational Goods, Sasha Barab

The Emerging Learning Design Journal

In an age of radical innovation, transforming societies, and globalized relationships, our opportunity to unlock human potential has never been more salient. While a variety of approaches have shown promise in this area, achieving this goal at scale has been hampered by thinking and designs that position learning as a process of knowledge transmission and content acquisition. Clearly content has a significant role in increase people potential, but many designs treat context acquisition as necessary and sufficient, neglecting meaningful engagement with one’s life possibilities as an integral part of the learning process. Instead, herein I posit that relevance, use, and …

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Three Square Food Bank, Jordan Hazeur Dec 2019

Three Square Food Bank, Jordan Hazeur

Second-Year Seminar Posters (COE 202)

No abstract provided.

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Tubes And Androgyny: Comment On "Thinking Through Tubes", Françoise Barbira Freedman Dec 2019

Tubes And Androgyny: Comment On "Thinking Through Tubes", Françoise Barbira Freedman

Tipití: Journal of the Society for the Anthropology of Lowland South America

In this comment on Stephen Hugh-Jones’s "Thinking Through Tubes" Françoise Barbira Freedman offers a feminist meditation on the semiotics of androgyny in Northwest Amazonian shamanism, ritual life and mythology. By focusing on processes of detotalization and retotalization that move beings from an androgynous state to a single-sex identity and back again, Barbira Freedman reveals a dynamic "one sex, two genders model of androgyny" that could not be further from a concept of androgyny as blurred gender. These movements in and out of a one sex state are largely the preserve of men so that androgynous features of the cosmos are …

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Analyzing Sentiments To Improve Transportation Services Using Nlp, Abdulnasser Ahli Dec 2019

Analyzing Sentiments To Improve Transportation Services Using Nlp, Abdulnasser Ahli

Theses

In the 21st century, social media apps like Twitter, Facebook, YouTube, Waze, Instagram, etc. are used by people to post their activities, sentiments, and feedback. Likewise, people are posting their experiences either positive or negative feedback or recommendation to improve the existing services of public transportation such as Buses, Tram, Metro, Taxis, Marines. Moreover, people are also posting about traffic conditions and accidents on the social media. However, at present most of the authorities depend on surveys and customer complaints to improve to knew people sentiments. This has very limited information because they cannot reach to all customers. Therefore, in …

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Um To Host First Internship Management Workshop, Stella Connell Dec 2019

Um To Host First Internship Management Workshop, Stella Connell

University of Mississippi News

Local and regional companies invited to learn about new internship initiatives

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Analysing Service Desk Incidents, Maryam Ali Salmin Dec 2019

Analysing Service Desk Incidents, Maryam Ali Salmin

Theses

The technical support department is one of the most crucial departments within an organization. Primarily, the role of this department is to provide technical assistance and maintenance to all computer systems and hardware. Besides, it undertakes other duties including installing, configuring, and updating hardware and software, as well as fixing any issue related to the equipment daily. The department can provide this service through onsite visits, remote actions or third-party assistance. Surveys have categorized the General Directorate of Residency and Foreigners Affair in Dubai (GDRFA) as a silo organization because it has several departments with various sections and sub-sections. Therefore, …

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Pretreatment Of Waste Biomass In Deep Eutectic Solvents: Conductive Heating Versus Microwave Heating, Narendra Kumar, Pranjali D. Muley, Dorin Boldor, Gary G. Coty, Joan G. Lynam Dec 2019

Pretreatment Of Waste Biomass In Deep Eutectic Solvents: Conductive Heating Versus Microwave Heating, Narendra Kumar, Pranjali D. Muley, Dorin Boldor, Gary G. Coty, Joan G. Lynam

Faculty Publications

Deep Eutectic Solvents (DESs) have recently emerged as an environmentally-friendly way to separate lignin from cellulose and hemicellulose in recalcitrant biomass prior to enzymatic hydrolysis to enhance glucose yields. Rice hulls, a widely-available secondary agricultural residue was pretreated with FA: CC (formic acid and choline chloride in a 2:1 mol ratio) using conductive heating and microwave heating. Pretreated biomass using either heating technique gave glucose titers 100 times higher than raw rice hulls after enzymatic hydrolysis. FTIR analysis shows similar findings for both heating techniques. For biomass pretreatment using DESs, microwave heating requires less than half of the energy (0.10 …

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Perceptual Precedence Or Increased Effort?: On The Mechanism Of The Small-Picture-Size Advantage In Category Learning, Toshiya Miyatsu Dec 2019

Perceptual Precedence Or Increased Effort?: On The Mechanism Of The Small-Picture-Size Advantage In Category Learning, Toshiya Miyatsu

Arts & Sciences Graduate Student Theses and Dissertations

I have previously identified a novel perceptual manipulation that enhances learning of some complex natural categories, and the current dissertation aims to uncover its mechanism. Specifically, learning of categories of tropical fish was enhanced when learned through small pictures (about 2º) compared to large pictures (about 19º). Through analyzing the previous results and extant theories in various domains, I identified two potential mechanisms through which this small-picture-size advantage manifested. The perceptual precedence hypothesis postulates that the processing of local dimensions is prioritized in large pictures and the processing of global dimensions is prioritized in small pictures. Therefore, small picture size …

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Sideromycin Pathway Elucidation: Insights Into Salmycin Biosynthesis, Transport Paradigms, And Drug Release, Gerry Sann Macaraeg Rivera Dec 2019

Sideromycin Pathway Elucidation: Insights Into Salmycin Biosynthesis, Transport Paradigms, And Drug Release, Gerry Sann Macaraeg Rivera

Arts & Sciences Graduate Student Theses and Dissertations

Antibiotic resistance is an increasing threat in today’s society. In order to overcome resistant bacteria, it is necessary to discover new drugs with novel mechanisms of action. This work focuses on the sideromycin pathway, encompassing the biosynthetic production, mechanism of entry and hydrolysis-mediated drug release. Sideromycins are an interesting approach to combat the rise of antibiotic resistance since they provide a different avenue that overcomes problems that arise when entering the cell. The dissertation is separated into distinct sections dealing with the various areas of interest in the sideromycin pathway, particularly for the sideromycin, salmycin, produced by Streptomyces violaceus. The …

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Cyclotron Resonance In Graphene Heterostructurescyclotron Resonance In Graphene Heterostructures, Billy Jordan Russell Dec 2019

Cyclotron Resonance In Graphene Heterostructurescyclotron Resonance In Graphene Heterostructures, Billy Jordan Russell

Arts & Sciences Graduate Student Theses and Dissertations

We present observations of cyclotron resonance in graphene Van der Waals heterostructure devices. Such devices provide dramatic improvements in sample quality and allow for ad- vanced electronic control, opening windows on previously inaccessible physics. The design and construction of a dedicated system for the measurement of electronic transport and infrared magnetospectroscopy in microscopic samples of atomically thin materials at cryogenic temperatures is presented. In high-mobility encapsulated monolayer graphene, electron- electron interaction effects are unambiguously observed to impact the interband cyclotron resonance as the Landau level filling factor is varied in a quantizing magnetic field. Additionally, a splitting of transitions involving …

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Time Share Contract, Shahd Mazen Hekmat Al-Dahhan, Dhamir Hussein Nasser Al-Mamouri Dec 2019

Time Share Contract, Shahd Mazen Hekmat Al-Dahhan, Dhamir Hussein Nasser Al-Mamouri

Uruk Journal of Human Sciences

That the modern era has become the cradle of many modern and diverse transactions Which was not before its age, in view of the activity of economic movement at the local and global level, so this aspect is the main engine of States in all directions in the spects of civil and cultural life, and within this economic activity emerged new transactions It has taken upon itself a wide space among the members of society. The most important feature of this new system is that it combines the element of location, the real estate unit and the element of time …

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Fabrication Of Paraffin Wax Particles With Diameter 100 Um, Sida Xue, Patricia Weisensee Dec 2019

Fabrication Of Paraffin Wax Particles With Diameter 100 Um, Sida Xue, Patricia Weisensee

Mechanical Engineering and Materials Science Independent Study

This independent study project is a preparatory work for the research- paraffin wax particle impacting dynamics and phase change behavior on quiescent paraffin wax liquid surface. The purpose for this independent study project is to produce paraffin wax particles with diameter 100 um both in their original color and dyed color.

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Group E: Improved Greens Harvester, Paige Grittner, Paul Harding, Ned Curran, Jennifer Mata Dec 2019

Group E: Improved Greens Harvester, Paige Grittner, Paul Harding, Ned Curran, Jennifer Mata

Mechanical Engineering Design Project Class

The Improved Greens Harvester is a project designing an improved machine that will be used to harvest crops by our client, EarthDance Organic Farm School in Ferguson, MO. The goal of our design was to provide a simple, easy-to-use, and easyto-fix machine that would cut and collect baby green leaves as the user walks along the plant bed. We first sought to address issue with the client’s current machine including low cutting accuracy, strain on the user’s body, frequent jamming, and low efficiency. Our initial design was a cart design that included: an oscillating blade for cutting, a rotating rope-shaft …

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Group S- Arliss Project, Preston Bailey, Zach Stelwagon, Cal Reynolds, James Hardy Dec 2019

Group S- Arliss Project, Preston Bailey, Zach Stelwagon, Cal Reynolds, James Hardy

Mechanical Engineering Design Project Class

Our project was the ARLISS competition project, more specifically the second part of the project where the vehicle must survive a drop and drive to a known location over rough desert terrain. We interviewed our professor, Dr. Potter, who had previous experience with the project to understand what was required in our design. The project started with creating concept ideas and deciding on one, which initially was an airplane to avoid designing a landing mechanism and having to drive over rough terrain. However, this design proved to have too many flaws and was scrapped. The new design was a small …

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Asme Design Challenge: The Jenga Stacker, Zachary Lin, Alex Chernauskas, Mitch Dorsey, Alex Remmers Dec 2019

Asme Design Challenge: The Jenga Stacker, Zachary Lin, Alex Chernauskas, Mitch Dorsey, Alex Remmers

Mechanical Engineering Design Project Class

The 2020 ASME Design Challenge requires teams to build a compact engineering system capable of manufacturing a tower made exclusively from standard-sized sheets of paper. The validation of the design will include testing for manufacturing speed, height of tower, and ability to support a load. Our senior design project focuses on the stacking mechanism and is designed to stack a 4 in x 4 in tower out of prepared 4 in x 1.5 in x 1.75 in paper boxes from the ground up.

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Improved Greens Harvester, Sharon Park, Khalil Clark, Millyn Brieschke Dec 2019

Improved Greens Harvester, Sharon Park, Khalil Clark, Millyn Brieschke

Mechanical Engineering Design Project Class

This paper attempts to provide a prototype of the improved greens harvester. Some inconveniences of the users, including not able to cut greens at a constant length, greens getting clogged in between the brush and the basket, and the need to empty the basket a lot of times. This paper describes problem understanding, concept generation, concept selection, concept embodiment, working prototype, and design refinement. Through these analyses and processes, an improved greens harvester solving the inconveniences is designed. The improved greens harvester has a higher greens harvester with wheels that makes using the harvester less troublesome. Band saw is stuck …

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Group A: Asme Student Design Challenge, Dakshi Jindal, Ashley Perry, Ben Liao Dec 2019

Group A: Asme Student Design Challenge, Dakshi Jindal, Ashley Perry, Ben Liao

Mechanical Engineering Design Project Class

This year's student design competition is termed "Building to the Sky." Student teams are required to build a compact engineering system capable of manufacturing a tower made of only standard-sized sheets of paper.

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Performance Modeling Of Supercritical Carbon Dioxide Zigzag-Channel Printed Circuit Heat Exchangers, Katrine Birgitte Bennett Dec 2019

Performance Modeling Of Supercritical Carbon Dioxide Zigzag-Channel Printed Circuit Heat Exchangers, Katrine Birgitte Bennett

UNLV Theses, Dissertations, Professional Papers, and Capstones

Supercritical carbon dioxide (sCO2) is currently being studied as the working fluid in power producing Brayton cycles due to its excellent physical and thermodynamic properties, especially near the critical point. Printed circuit heat exchangers (PCHEs) are being considered for use as condensers and recuperators for this purpose due to their high strength and compact designs. Many experimental and numerical studies are being conducted to characterize and optimize sCO2 PCHE operation and develop correlations to describe their thermal-hydraulic performance. Additionally, a few experimental and numerical structural assessments of these PCHEs have been conducted, but all have been somewhat limited due to …

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Ethical Dilemmas Surrounding Manufacturing Offshoring: Assessing The Morality Of Offshoring Decisions Through A Utilitarian Viewpoint, Luis Encinas Dec 2019

Ethical Dilemmas Surrounding Manufacturing Offshoring: Assessing The Morality Of Offshoring Decisions Through A Utilitarian Viewpoint, Luis Encinas

Honors Scholar Theses

The purpose of this paper to assess the ethical dilemmas that exist when American companies offshore manufacturing work to cheaper labor markets abroad through a utilitarian perspective. The paper will explain what offshoring is and what has driven American companies into engaging in this practice. Next, the criteria for the utilitarian assessment will be explained. After, I will examine the effects on the U.S labor force, U.S economy, and the foreign labor force through two case studies: the Bangladeshi apparel industry and the Mexican maquiladoras industry. Finally, the paper will offer some suggestions for making this practice more ethical in …

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Finding A Viable Neural Network Architecture For Use With Upper Limb Prosthetics, Maxwell Lavin Dec 2019

Finding A Viable Neural Network Architecture For Use With Upper Limb Prosthetics, Maxwell Lavin

Master of Science in Computer Science Theses

This paper attempts to answer the question of if it’s possible to produce a simple, quick, and accurate neural network for the use in upper-limb prosthetics. Through the implementation of convolutional and artificial neural networks and feature extraction on electromyographic data different possible architectures are examined with regards to processing time, complexity, and accuracy. It is found that the most accurate architecture is a multi-entry categorical cross entropy convolutional neural network with 100% accuracy. The issue is that it is also the slowest method requiring 9 minutes to run. The next best method found was a single-entry binary cross entropy …

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Corrosion-Resistant Non-Carbon Electrocatalyst Supports For Proton Exchange Membrane Fuel Cells, Cheng He Dec 2019

Corrosion-Resistant Non-Carbon Electrocatalyst Supports For Proton Exchange Membrane Fuel Cells, Cheng He

McKelvey School of Engineering Graduate Student Theses & Dissertations

Proton exchange membrane fuel cells (PEMFCs) are a promising portable power source due to their low operating temperature, minimal pollutant generation and fast startup. However, several challenges remain concerning lifetime, reliability, and cost. A critical issue is PEMFC component durability. Platinum supported on high surface area carbon has been one of the most widely used electrocatalysts in PEMFCs. However, carbon corrosion over the course of normal PEMFC operation occurs due to the relatively low standard electrode potential for the carbon dioxide/carbon redox couple (0.207V vs. standard hydrogen electrode). Considering this challenge, it is imperative to identify alternative support materials to …

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Gender Differences In Early Communication, Language Acquisition And Development: A Descriptive Study, رشا عبد الرضا سعيد, رشا عبد المنعم عزيز Dec 2019

Gender Differences In Early Communication, Language Acquisition And Development: A Descriptive Study, رشا عبد الرضا سعيد, رشا عبد المنعم عزيز

Alustath Journal for Human and Social Sciences

Parents pay a significant attention to the first words children utter. However, first words are not the actual beginning of communication. Much earlier, babies begin to communicate their feeling via making eye contact, pointing, crying, squealing, and other gestures. Furthermore, they perceive language earlier than making others understand them. The aim of this paper is to tackle the variations between the two sexes starting from the stages of language acquisition in normal children, the differences between the two genders in language vocalization within each stage. Next, the distinctions in acquiring a particular communicative competence and the causes behind this difference …

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Seasonal And Annual Changes Of Rainfall In Iraq During The Period From 1992 To 2010, عبد السلام محمد مايل الجغيفي Dec 2019

Seasonal And Annual Changes Of Rainfall In Iraq During The Period From 1992 To 2010, عبد السلام محمد مايل الجغيفي

Alustath Journal for Human and Social Sciences

Iraq is suffering from severe drought, a feature inherent in its changing climatic conditions. Water shortage has a negative impact on agricultural land and is associated with high desertification risk. Thus, the determination of moisture conditions over a multi-year period represents a difficult issue. In this paper, monthly and annual precipitation figures from 20 meteorological stations in Iraq were analyzed to provide insight into the seasonal and annual variations of annual changes and time trends in rainfall during the period 1992-2010. The Mann-Kendall non-ranking test was applied to trend detection in the annual series and the Kendall-Theil line was used …

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Development Of High-Speed Photoacoustic Imaging Technology And Its Applications In Biomedical Research, Yun He Dec 2019

Development Of High-Speed Photoacoustic Imaging Technology And Its Applications In Biomedical Research, Yun He

McKelvey School of Engineering Graduate Student Theses & Dissertations

Photoacoustic (PA) tomography (PAT) is a novel imaging modality that combines the fine lateral resolution from optical imaging and the deep penetration from ultrasonic imaging, and provides rich optical-absorption–based images. PAT has been widely used in extracting structural and functional information from both ex vivo tissue samples to in vivo animals and humans with different length scales by imaging various endogenous and exogenous contrasts at the ultraviolet to infrared spectrum. For example, hemoglobin in red blood cells is of particular interest in PAT since it is one of the dominant absorbers in tissue at the visible wavelength.The main focus of …

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Longitudinal Acoustic Traps: Design, Fabrication, And Evaluation For Biological Applications, Michael Moore Binkley Dec 2019

Longitudinal Acoustic Traps: Design, Fabrication, And Evaluation For Biological Applications, Michael Moore Binkley

McKelvey School of Engineering Graduate Student Theses & Dissertations

Acoustofluidics combine ultrasonic actuation with small-volume microfluidic channels to enable precise, contactless object manipulation for a range of applications from serial chemical processing to blood component separation and single-cell analysis. Micron- to millimeter-scale vibrational waves generate reproducible pressure fields within the microfluidic channels and chambers. By exploiting the material property mismatch between a particle (polymeric and silica beads, cells, etc.) and a suspending fluid, the acoustic radiation force is used to move particles toward regions of low (nodes) or high pressure (antinodes). An understanding of these field-particle interactions is applied to design and implement complicated channel architectures for preferential segregation …

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Towards Interpretable Machine Learning With Applications To Clinical Decision Support, Zhicheng Cui Dec 2019

Towards Interpretable Machine Learning With Applications To Clinical Decision Support, Zhicheng Cui

McKelvey School of Engineering Graduate Student Theses & Dissertations

Machine learning models have achieved impressive predictive performance in various applications such as image classification and object recognition. However, understanding how machine learning models make decisions is essential when deploying those models in critical areas such as clinical prediction and market analysis, where prediction accuracy is not the only concern. For example, in the clinical prediction of ICU transfers, in addition to accurate predictions, doctors need to know the contributing factors that triggered the alert, which factors can be quickly altered to prevent the ICU transfer. While interpretable machine learning has been extensively studied for years, challenges remain as among …

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A Microfluidic Platform To Investigate The Mechanism By Which Gdnf Overexpression In Schwann Cells Causes Neuronal Axon Entrapment, Ze Zhong Wang Dec 2019

A Microfluidic Platform To Investigate The Mechanism By Which Gdnf Overexpression In Schwann Cells Causes Neuronal Axon Entrapment, Ze Zhong Wang

McKelvey School of Engineering Graduate Student Theses & Dissertations

Twenty million Americans suffer from peripheral nerve injury (PNI) caused by trauma and medical disorders, with approximately $150 billion spent in annual health-care dollars in the United States. Even with proper surgical reconstruction, less than 50% of the patients achieve satisfactory functional recovery. The gold standard surgical repair for long gaps (>3cm) is the autologous nerve graft, despite its disadvantages such as donor site morbidity, risk of infection, and increased cost. Alternative methods, such as acellular nerve grafts (ANA), are ineffective for large lesion gaps because of the lack of cells and regeneration factors. Recent efforts have been focused …

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Structural And Tissue-Level Adaptations Of Lumbar Intervertebral Discs In Humans With Inducible Low Back Pain Symptoms, Christian Isaiah Weber Dec 2019

Structural And Tissue-Level Adaptations Of Lumbar Intervertebral Discs In Humans With Inducible Low Back Pain Symptoms, Christian Isaiah Weber

McKelvey School of Engineering Graduate Student Theses & Dissertations

Low back pain (LBP) is a devastating musculoskeletal ailment that impacts majority of the global population. Up to 95% of cases are considered nonspecific where the origin is unclear. Although there is a diagnosis with these cases, there lacks specificity that would help individuals with treatment and pain management. Imaging techniques such as magnetic resonance imaging (MRI) are primarily utilized in the diagnosis of LBP as it illuminates internal structures of the spine. One important structure clearly identified with MRI is the intervertebral disc (IVD) that is susceptible to injury and disease. Further, diagnostic imaging is performed lying down where …

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Graph Deep Learning: Methods And Applications, Muhan Zhang Dec 2019

Graph Deep Learning: Methods And Applications, Muhan Zhang

McKelvey School of Engineering Graduate Student Theses & Dissertations

The past few years have seen the growing prevalence of deep neural networks on various application domains including image processing, computer vision, speech recognition, machine translation, self-driving cars, game playing, social networks, bioinformatics, and healthcare etc. Due to the broad applications and strong performance, deep learning, a subfield of machine learning and artificial intelligence, is changing everyone's life.Graph learning has been another hot field among the machine learning and data mining communities, which learns knowledge from graph-structured data. Examples of graph learning range from social network analysis such as community detection and link prediction, to relational machine learning such as …

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Rhodococcus Opacus Pd630 Genetic Tool Development To Enable The Conversion Of Biomass, Drew Michael Delorenzo Dec 2019

Rhodococcus Opacus Pd630 Genetic Tool Development To Enable The Conversion Of Biomass, Drew Michael Delorenzo

McKelvey School of Engineering Graduate Student Theses & Dissertations

The discovery of fossil fuels facilitated a new era in human history and allowed many firsts, such as the mass production of goods, the ability to travel and communicate long distances, the formation of population dense cities, and unprecedented improvements in quality of life. Alternative sources of energy and chemicals are needed, however, as hydrocarbon reserves continue to deplete and the effects of burning fossils on the planet become better understood. Lignocellulosic biomass is the most abundant raw material in the world and a viable alternative to petroleum-derived products. The pre-treatment of lignocellulose (e.g., thermocatalytic depolymerization, enzymatic hydrolysis, pyrolysis, etc.) …

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