Physical Sciences and Mathematics Commons^™

Development Of Organocatalytic Reactions For The Assembly Of Complex Molecules, Chenguang Yu

Chemistry and Chemical Biology ETDs

Development of efficient organocatalytic reactions for the facile assembly of synthetically and medicinally useful molecules is an important task in modern organic synthesis. Towards this end, my Ph. D. study focuses on the development of novel organocatalytic reactions for the construction of structurally diverse molecular architectures. A chiral bifunctional amine thiourea as promoter has been developed as an efficient solution to a long standing challenging issue in atropo-enantioselective transesterification of the Bringmann lactones. This organocatalytic approach delivers the first highly enantioselective, high yielding dynamic kinetic resolution process for the preparation of axially chiral biaryl compounds with a broad substrate scope …

Stratospheric Gravity Wave Fluxes And Scales During Deepwave, Ronald B. Smith, Allison D. Nugent, Christopher G. Kruse, David C. Fritts, James D. Doyle, Steven D. Eckermann, Michael J. Taylor, Andreas Dornbrack, M. Uddstrom, William Cooper, Jorgen Jensen, Stuart Beaton

All Physics Faculty Publications

During the Deep Propagating Gravity Wave Experiment (DEEPWAVE) project in June and July 2014, the Gulfstream V research aircraft flew 97 legs over the Southern Alps of New Zealand and 150 legs over the Tasman Sea and Southern Ocean, mostly in the low stratosphere at 12.1-km altitude. Improved instrument calibration, redundant sensors, longer flight legs, energy flux estimation, and scale analysis revealed several new gravity wave properties. Over the sea, flight-level wave fluxes mostly fell below the detection threshold. Over terrain, disturbances had characteristic mountain wave attributes of positive vertical energy flux (EF_z), negative zonal momentum flux, and …

Beach Nourishment: Effects On The Hatching & Emergence Success Rates Of Leatherback (Dermochelys Coriacea), Loggerhead (Caretta Caretta), And Green (Chelonia Mydas) Sea Turtles, Jenna Caderas

HCNSO Student Theses and Dissertations

Broward County, Florida is a popular tourism destination. Due to its popularity, much of the shoreline has been modified and natural habitats were replaced with infrastructure such as houses, condominiums, resorts, and restaurants. The same Broward County beaches utilized by tourists and residents are important for three species of nesting sea turtles, including the Leatherback, Dermochelys coriacea, Loggerhead, Caretta caretta, and Green, Chelonia mydas, Turtles. The Broward County Sea Turtle Conservation Program (BCSTCP) collects yearly data in order to study these endangered reptiles. Increased anthropogenic effects including further coastal development (public & private), public beach events, public beach access, as …

Decrypting The Link Between Elliptic Primes And Twin Primes, John M. Elizarraras, Devin N. Ferri, Javier M. Hernandez Jr., Anthony Luo, Isabel F. Swafford, Liljana Babinkostova (Mentor), Robin M. Betcher (Mentor), Spencer Nelson (Mentor), Marion Scheepers (Mentor)

Idaho Conference on Undergraduate Research

From Caesar’s cipher to Germany’s enigma machine to modern day cryptosytems, cryptography spans throughout history. Methods of encryption have evolved over hundreds of years and continue to evolve as computational efficiency increases. Over 2.5 quintillion bytes of data are generated per day through online networks such as banking, shopping, and social media. More than 90% of the total data in the world has been generated in the past two years, thereby requiring more sophisticated cybersecurity systems and an increasing demand for research in the field of cryptography. A curve of the form y² = x³ + Ax + …

Steady State Configurations Of Cells Connected By Cadherin Sites, Jared Adam Mcbride

Theses and Dissertations

Many cells employ cadherin complexes (c-sites) on the cell membrane to attach to neighboring cells, as well as integrin complexes (i-sites) to attach to a substrate in order to accomplish cell migration. This paper analyzes a model for the motion of a group of cells connected by c-sites. We begin with two cells connected by a single c-site and analyze the resultant motion of the system. We find that the system is irrotational. We present a result for reducing the number of c-sites in a system with c-sites between pairs of cells. This greatly simplifies the general system, and provides …

The Derivation Of Sea Surface Velocities From Satellite Imagery Using Maximum Cross Correlation (Mcc), Philip Lawrence

The Plymouth Student Scientist

An investigation into the use of cross-correlation statistics to resolve surface velocities from satellite imagery was conducted for the region characterised by the Benguela current at approximately 24oS - 28oS and 9oE - 17oE for July 14th and 15th 2011. Colour images depicting concentrations for chlorophyll_a taken by the MODIS sensor and provided by NASA’s Ocean Color Browser, were used to conduct the statistical analysis using distinguishable surface colour features as tracers. Three runs using different parameter values for the cross correlation were carried out and the output vector fields examined. The first run produced 126 vectors with mean u …

Determining Groundwater Sources And Ages Via Isotope Geochemistry In Big Sky, Montana, Thomson Connie

Graduate Theses & Non-Theses

The Big Sky ski resort area in southwestern Montana is experiencing exponential growth in both development and population. Concerns have arisen over the quantity of good-quality groundwater in the region, and whether there is a large enough reserve to support the growing demand. In light of already-documented water-level decreases, and domestic wells needing to be deepened or replaced, the Montana Department of Natural Resources and Conservation (DNRC) enlisted the Montana Bureau of Mines and Geology's Ground Water Investigation Program to perform an assessment of groundwater availability and quality in the region, and define groundwater supply sources.

The geology in the …

Reexamination Of Ore-Forming Processes In The Emery Mining District, Powell Co., Montana, Jarred Zimmerman

Graduate Theses & Non-Theses

The present investigation was undertaken in collaboration with the Montana Bureau of Mines and Geology to re-evaluate the Emery district using modern methods of ore deposit study including fluid inclusions, stable isotopes, and mineral geochemistry. Results from this thesis will be an aid in reassessing the potential of the Boulder Batholith and surrounding geologic units to host large, undiscovered precious and/or base metal deposits. The Emery (aka Zosell) district was mined from the late 1800s until the early 1950s. Mineralized quartz veins are hosted by basaltic andesite flows of the late Cretaceous Elkhorn Mountain Volcanics (EMV). Two sets of veins …

Lawn Establishment In Kentucky [2016], Gregg Munshaw

Agriculture and Natural Resources Publications

The methods you use, the grass you select and the time of year that you plant your lawn will often determine the quality and ease of maintenance. A quality lawn will increase the value and appeal of your property, and maintaining it can be satisfying work. When it comes to establishing a new lawn, the key is to do everything properly from the start so you will not have to try to fix the lawn once it is established.

Providing Water For Beef Cattle In Rotational Grazing Systems, Stephen F. Higgins, Lee Moser, Kevin Laurent

Agriculture and Natural Resources Publications

Water is the most essential nutrient for cattle production. Water is used in almost every bodily function, including digestion, milk production, and excretion. Given the role and function of water in relation to animal production, health, and welfare, it is critical that abundant, clean water is available in any livestock production operation. Livestock must have immediate access to water within every paddock of a rotational grazing system to realize maximum efficiency and production.

Low-Cost Quartz Crystal Microbalance System Platform Designed For Chemical Nanoparticle, Danming Wei

Masters Theses & Specialist Projects

QCM sensor is a response to a kind of broad spectrum, high sensitivity, and simple structure, low-cost detection device, and particularly its quality as a type of gas sensor is widely used. With the successful oscillation in liquid phase, QCM sensor has been involved in the application analytical chemistry, surface chemistry, biochemistry and environmental monitoring side and many other scientific fields. With sensitive surface film as the sensitive element, AT-cut quartz crystal as energy transducer components by changes of the relationship between mass of surface film and frequency of QCM sensor transduces signals of mass or concentration into output frequency …

Synthetic Investigation On The Biomimetic Metal-Catalyzed Sulfoxidations And Photochemical Generation Of A Highly Reactive Ruthenium(V)-Oxo Porphyrin, Weilong Luo

Masters Theses & Specialist Projects

Catalytic oxidation plays a crucial role in current chemical and pharmaceutical industries which is also a leading technology for green chemical processes. In Nature, the ubiquitous cytochrome P450 enzymes can catalyze a wide variety of oxidation reactions with high efficiency and selectivity. Many transition metal catalysts are designed as the biomimetic model of cytochrome P450 enzymes. In this work, series of metalloporphyrins and metallocorroles have been successfully synthesized to investigate and develop catalytic selective oxidation of sulfides to sulfoxides.

Manganese(III) porphyrin complexes (2) and manganese(III) corrole complexes (6) with iodobenzene diacetate [PhI(OAc)2] as a mild oxygen source exhibited remarkable catalytic …

Vertical Implementation Of Cloud For Education (V.I.C.E.), Travis S. Brummett

Masters Theses & Specialist Projects

There are several different implementations of open source cloud software that organizations can utilize when deploying their own private cloud. Some possible solutions are OpenNebula, Nimbus, and Eucalyptus. These are Infrastructure-as-a-Service (IaaS) cloud implementations that ultimately gives users virtual machines to undefined job types. A typical IaaS cloud is composed of a front-end cloud controller node, a cluster controller node for controlling compute nodes, a virtual machine image repository node, and many persistent storage nodes and compute nodes. These architectures are built for ease of scalability and availability.

Interestingly, the potential of such architectures could have in the educational field …

Augmented Reality Vs Virtual Reality, Atdhe Mahmuti

Theses and Dissertations

Në këtë punim diplome janë shpjeguar shume koncepte të realitetit virtual (VR) dhe realitetit të shtuar (AR), janë analizuar dy teknologjitë që edhe pse janë gjysme shekulli të vjetra kohëve të fundit kanë marr vëmendje dhe përmasa të gjera të zhvillimit dhe aplikimit në jetën reale dhe në përmasimin e produktivitetit të njerëzve, edhe pse këto dy teknologji janë të ngjashme njëra me tjetrën ato kanë edhe dallime. Si pika kryesore që janë shtjelluar në ketë punim diplome janë duke filluar nga një historik për realitetin virtual dhe realitetin e shtuar, duke u nisur që nga shekulli XX-të e deri …

Mekanizmat E Siguris Në Voip Dhe Efekti I Tyre, Bajram Quka

Theses and Dissertations

Voice over Internet Protocol (VoIP) është duke u bërë një mënyrë më e vlefshme dhe më e popullarizuar e komunikimit të përdorur në internet.VoIP është një teknologji me një rritje të shpejtë që mundëson transportin e zërit mbi rrjetin e të dhënave. Kjo rritje rezulton edhe në fokusin e integrimit të zërit dhe të trafikut të të dhënave, mbi infrastrukturen ekzistuese të rrjetave me një kosto të ultë, dhe menagjim të rrjetit të ofruar nga kjo teknologji.

Megjithat me suksesin e VoIP, kërcnimet dhe sfidat qëndrojnë mbrapa kësaj teknologjie, ku nevoja për një siguri me të lartë, disponushmeri me te …

Intelligent Systems For Industry Using Reinforcement Learning Technique, Lirandë Pira

Theses and Dissertations

The rise of Intelligent Systems has happened gradually, then suddenly. They are gradual because we are aware that this field of computing has come a long way along with the history of computers. Yet, the sudden astonishing changes that affect mankind seem to take everyone in surprise. Their occurrence is reshaping the real world and our interaction with our digital life is changing in profound ways. Can computers think? We don’t have evidence on that, whatever the answer to that question is. But what we know is that computers do learn. Indeed, the whole process of computer evolution revolves around …

Bootstrap Vs Foundation, Leandrit Ferizi

Theses and Dissertations

Në kohën tonë teknologjia po ecën me hapa shumë të shpejtë, sidomos në fushën e paisjeve elektronike si: kompjuterë, telefona të menqur, televizorë të menqur, etj. Numri i përdorueseve të internetit dhe këtyre paisjeve ështe në rritje të vazhdueshme. Platformat dhe madhësit e ndryshme të këtyre paisjeve na deyrojnë që gjatë zhvillimit të web faqeve të mendojmë për secilin përdorues duke orientuar zhvillimin që të jetë kompatibil me shfletuesit dhe të gjitha paisjet. Pamja e web faqeve dallon varësisht nga paisja e përdorur. Web faqeve, tek të cilat ky ndryshim ndodh varësisht nga paisja, ju referohemi si “Responsive Websites”. Krijimi …

Aplikimi I Decision Tree Në Kompanitë E Sigurimeve, Shpend Sadiku

Theses and Dissertations

Data mining është lëmi ku shkencat kompjuterike bashkëveprojnë fuqishëm me shkencat statistikore dhe qëllimi kryesor është identifikimi i marrëdhënieve dhe trendëve të fshehura në të dhënat e mbledhura dhe parashikimi i trendëve/ngjarjeve te ardhshme. Duke e ditur se sot shumica e aktiviteteve tona janë të lidhura ngushtë me përdorim të teknologjisë informative, sasia e të dhënave të mbledhura nga ana e kompanive dhe institucioneve të ndryshme është e jashtëzakonisht e madhe. Prandaj, edhe dobitë që mund të përfitohen nga këto të dhëna janë të mëdha dhe atë në të gjitha segmentet e jetës. Duke përdorur metoda të ndryshme për analizimin …

Wordpress Vs. Joomla, Rinor Bivolaku

Theses and Dissertations

Ekzistojnë probleme të ndryshme të asociuara me një uebsajt statik, si për shembull përditësimi i menaxhimit dhe përmbajtjes(management and content update). Për të adresuar këto probleme, një alternativë është përdorimi i Content Management Systems(CMS), siç janë WordPress dhe Joomla. Ky punim përshkruan procesin e përdorimit të këtyre CMS-ëve në një uebsajt statik (proces i njohur si migrimi i sajtit statik në CMS), duke shtuar funksionalitetet të cilat vijnë duke i adresuar kërkesat që vijnë nga një kompani apo klient i caktuar. Në ndërkohë, themes përdoren për të kustomizuar uebsajtin bazuar në po ato kërkesa; pluginsat specifik të WordPress apo …

The Prairie Post Quarterly Newsletter Of The High Plains Regional Climate Center- July 2016, Natalie Umphlett, Bill Sorensen, Jamie Lahowetz, Crystal J. Stiles

Prairie Post: Quarterly Newsletter of the High Plains Regional Climate Center

Inside this issue:

Message from the interim director........................................1

Staff spotlight...........................1

Research update......................2

Product highlight....................3

Partnership spotlight.............3

AWDN information.................4

Update on regional climate conditions..................................4

Outreach/engagement.........5

Recent and upcoming travel and activities.............................6

Experimental Investigation And Numerical Simulation Of A Copper Micro-Channel Heat Exchanger With Hfe-7200 Working Fluid, Eric Borquist

Doctoral Dissertations

Ever increasing cost and consumption of global energy resources has inspired the development of energy harvesting techniques which increase system efficiency, sustainability, and environmental impact by using waste energy otherwise lost to the surroundings. As part of a larger effort to produce a multi-energy source prototype, this study focused on the fabrication and testing of a waste heat recovery micro-channel heat exchanger. Reducing cost and facility requirements were a priority for potential industry and commercial adoption of such energy harvesting devices. During development of the micro-channel heat exchanger, a new fabrication process using mature technologies was created that reduced cost, …

Wildlife Benefits Of Switchgrass Production In Kentucky, S. Ray Smith, Krista Lea, Thomas Clarkson Keene, Laura Mary Jane Schwer

Agriculture and Natural Resources Publications

Switchgrass (Panicum virgatum) is a warm-season perennial grass native to much of the United States including Kentucky (USDA). Switchgrass can be grown on marginal soils and regularly produces high biomass yields (4 to 8 tons of dry matter per acre) in Kentucky. Switchgrass varieties are broadly classified into two ecotypes: lowland and upland. Lowland varieties, such as ‘Alamo,’ typically produce higher yields, while upland varieties, such as ‘Cave-in-Rock’ and ‘Kanlow,’ generally have higher forage quality.

An Ipm Scouting Guide For Common Problems Of High Tunnel And Greenhouse Vegetable Crops In Kentucky, Shubin Saha, Emily Pfeufer, Ricardo Bessin, Shawn Wright, Cheryl A. Kaiser

Agriculture and Natural Resources Publications

Long before the term “sustainable” became a household word, farmers were implementing sustainable practices in the form of Integrated Pest Management (IPM) strategies. IPM uses a combination of biological, cultural, physical, and chemical methods to reduce and/or manage pest populations. These strategies are used to minimize environmental risks, economic costs, and health hazards. Pests are managed (although rarely eliminated) to reduce their negative impact on the crop.

Scouting and monitoring diseases, insects, weeds, and abiotic disorders in order to identify potential problems before they result in serious losses is essential to the IPM approach. The key to effective monitoring is …

Non-Traditional Students' Conceptual Scores And Network Centrality In Scale-Up Classrooms, Emily N. Sandt, Adrienne L. Traxler

Physics Faculty Publications

As classrooms transition from traditional to cooperative learning environments, questions about the details of these environments effectiveness are posed. Does this model equally benefit all students? How do nontraditional (NT) students' gains in conceptual knowledge compare to those of traditional (Trad) students in these classrooms? Do NT students' social differences (i.e. age, employment status, family life, etc.) affect the amount of learning they do in the course or their tendency to form collaborative ties with other students? In three sections of SCALE-UP introductory calculus-based physics, we collected social network survey data about student connections and used the Force Concept Inventory …

In-Network Retransmissions In Named Data Networking, Hila Ben Abraham, Patrick Crowley

All Computer Science and Engineering Research

The strategy layer is an important architectural component in both Content-Centric Networking (CCN) and Named Data Networking (NDN). This component introduces a new forwarding model that allows an application to configure its namespace with a forwarding strategy. A core mechanism in every forwarding strategy is the decision of whether to retransmit an unsatisfied Interest or to wait for an application retransmission. While some applications request control of all retransmissions, others rely on the assumption that the strategy will retransmit an Interest when it is not satisfied. Although an application can select the forwarding strategy used in the local host, it …

Growth Of Groups Of Wind Generated Waves, Frederique Drullion, Shahrdad Sajjadi

Publications

In this paper we demonstrate numerical computations of turbulent wind blowing over group of waves that are growing in time. The numerical model adopted for the turbulence model is based on differential second-moment model that was adopted for growing idealized waves by Drullion & Sajjadi (2014). The results obtained here demonstrate the formation of cat's-eye which appear asymmetrically over the waves within a group.

Reactive Flow Modeling Of Small Scale Detonation Failure Experiments For A Baseline Non-Ideal Explosive, David E. Kittell, Nick R. Cummock, Steven F. Son

Purdue Energetics Research Center Articles

Small scale characterization experiments using only 1–5 g of a baseline ammonium nitrate plus fuel oil (ANFO) explosive are discussed and simulated using an ignition and growth reactive flow model. There exists a strong need for the small scale characterization of non-ideal explosives in order to adequately survey the wide parameter space in sample composition, density, and microstructure of these materials. However, it is largely unknown in the scientific community whether any useful or meaningful result may be obtained from detonation failure, and whether a minimum sample size or level of confinement exists for the experiments. In this work, it …

Gsu Event Portal, Syed Fazalullah, Syed Zainullabuddin, Sujith Kumar Thota, Nadeh Ali Shafizadeh

All Capstone Projects

We want to enhance the services we provide at the GSU event portal site. As we know that the current system provides an old fashioned service including the look and feel which is out dated with the current trend. Our solution will bring a great look and feel to the user and easy navigation across the website. Also providing new feature that is the email service where the user will receive emails upon registration and during other activities. This application will not replace the theme of the existing application but will provide rich user interface and additional services to the …

Analysis Of Various Classification Techniques For Computer Aided Detection System Of Pulmonary Nodules In Ct, Barath Narayanan Narayanan, Russell C. Hardie, Temesguen Messay

Electrical and Computer Engineering Faculty Publications

Lung cancer is the leading cause of cancer death in the United States. It usually exhibits its presence with the formation of pulmonary nodules. Nodules are round or oval-shaped growth present in the lung. Computed Tomography (CT) scans are used by radiologists to detect such nodules. Computer Aided Detection (CAD) of such nodules would aid in providing a second opinion to the radiologists and would be of valuable help in lung cancer screening. In this research, we study various feature selection methods for the CAD system framework proposed in FlyerScan. Algorithmic steps of FlyerScan include (i) local contrast enhancement (ii) …

Growth Of Unsteady Wave Groups By Shear Flows, Shahrdad Sajjadi, Julian Hunt, Frederique Drullion

Publications

A weakly nonlinear theory has been proposed and developed for calculating the energy- transfer rate to individual waves in a group. It is shown what portion of total energy- transfer rate, over the envelope of wave group, affects individual waves in the group. From this an expression for complex phase speed of individual waves is calculated. It is deduced that each wave in a group does not grow at the same rate. It is shown that the critical layer is no longer symmetrical compared with the ideal monochromatic waves. This asymmetry causes the critical layer height to be lower over …