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Articles 1 - 30 of 141735

Full-Text Articles in Physical Sciences and Mathematics

Real Analysis I, Ismail Nikoufar Dec 2105

Real Analysis I, Ismail Nikoufar

Ismail Nikoufar

Real Analysis slides for my graduate students.


Effect Of Head Group Size On The Photoswitching Applications Of Azobenzene Disperse Red 1 Analogues, Chris Corkery, Alexis Goulet-Hanssens, Arri Priimagi, Christopher Barrett Dec 2103

Effect Of Head Group Size On The Photoswitching Applications Of Azobenzene Disperse Red 1 Analogues, Chris Corkery, Alexis Goulet-Hanssens, Arri Priimagi, Christopher Barrett

Chris Corkery

No abstract provided.


Analysis Of Nonequilibrium Hcp Precipitate Growth In Fcc Matrices: Application To Al–Ag, Daniel Finkenstadt, Duane Johnson Nov 2029

Analysis Of Nonequilibrium Hcp Precipitate Growth In Fcc Matrices: Application To Al–Ag, Daniel Finkenstadt, Duane Johnson

Duane D. Johnson

Hexagonal-close-packed (hcp) γ-precipitates with large aspect ratios form rapidly in some face-centered cubic (fcc) solid-solutions. No model explains the observed time-dependent increase in aspect ratio, nor irregular intermediate growth shapes. We propose a nonequilibrium process involving trapezoidal offshoots (controlled only by energetics) that governs the growth behavior (kinetics) and yields nonequilibrium structures in agreement with observation. Then, combining nucleation theory and diffusion-limited growth both of secondary nuclei and ledges, we derive a general growth equation for γ-precipitates due to solute-segregation to precipitate–matrix interfaces that includes our modification of the Jones–Trivedi model for thickening to account for the slow ...


Ryan Caylor, Ryan Caylor Dec 2016

Ryan Caylor, Ryan Caylor

Matthew E. Wise

Ryan is a senior majoring in chemistry at Concordia University. He plans on graduating in the spring of 2017. After graduation Ryan plans on attending graduate school in the field of meteorology with an interest in becoming a weather man. Ryan is returning to the Pacific Northwest National Laboratory in the summer of 2015 to study the chemical composition of secondary organic aerosol particles. He is also a pitcher on the Concordia University baseball team.


Elasticity Of Cylindrical Black Holes, Conrad Pearson Dec 2016

Elasticity Of Cylindrical Black Holes, Conrad Pearson

Physics

Black holes are regions of strong gravity, and are often regarded as behaving like drops of fluid. When this line of thought is applied to cylindrical black holes (black cylinders), a mapping can be made between known instabilities for black cylinders and ordinary fluid cylinders. However, this known correlation is increasingly less accurate for lower spatial dimensions, and I seek to correct this discrepancy in this thesis. By considering soft solids instead of pure fluids, elastic energy can be included, which brings us closer to a direct comparison. In improving this mapping, it becomes possible to better understand the behavior ...


Common Core In Tennessee: An Analysis Of Eighth Grade Mathematics Standards, Hayley Little Dec 2016

Common Core In Tennessee: An Analysis Of Eighth Grade Mathematics Standards, Hayley Little

Honors Theses

Since their introduction in 2010, the Common Core State Standards (CCSS) have been a highly controversial topic in educational reform. Though the standards are not a product of the federal government and are not federally mandated, they do represent a push towards national academic standards in America. For states such as Tennessee, educational policies of the past pushed them to lower their academic standards in order to create the illusion of success. Those states are now some of the places that have seen the most change with the adoption of the CCSS. It still remains somewhat unclear, however, which changes ...


Mathematical Analysis Ii, Ismail Nikoufar Nov 2016

Mathematical Analysis Ii, Ismail Nikoufar

Ismail Nikoufar

No abstract provided.


Evaluation Of Physical And Structural Properties Of Biofield Energy Treated Barium Calcium Tungsten Oxide, Mahendra Trivedi Oct 2016

Evaluation Of Physical And Structural Properties Of Biofield Energy Treated Barium Calcium Tungsten Oxide, Mahendra Trivedi

Mahendra Kumar Trivedi

Barium calcium tungsten oxide (Ba2CaWO6) is known for its double perovskite-type crystal structure. The present study was designed to see the effect of biofield energy treatment on physical, atomic, and structural properties of Ba2CaWO6. In this study, Ba2CaWO6 powder sample was divided into two parts, one part was remained as untreated, denoted as control, while the other part was subjected to Mr. Trivedi’s biofield energy treatment and coded as treated. After that, the control and treated samples were analyzed using X-ray diffraction (XRD), surface area analyzer, Fourier transform infrared (FT-IR), and electron spin resonance (ESR) spectroscopy. The XRD data ...


Prospective Doctoral Statement For The University Of Southern California's School Of Cinematic Arts Media Arts + Practice Program, Gabriel Leiner Aug 2016

Prospective Doctoral Statement For The University Of Southern California's School Of Cinematic Arts Media Arts + Practice Program, Gabriel Leiner

Gabriel Leiner

After visiting L.A. again and seeing the beautiful fountains on the University of Southern California's campus I am filled with all kinds of ideas about the future and brimming with energy. To all those at the University of Southern California's Cinematic Arts Department, thanks for reading my ideas over the past couple years and helping me to evolve and become a better person and a better writer. Starting a position as a doctoral student in the Media Arts + Practice Program in 2016 is an exciting opportunity. I've got a really positive outlook about Kiss The Water.


Silver-Polymer Nanocomposites, Anita N. Paul Aug 2016

Silver-Polymer Nanocomposites, Anita N. Paul

Electronic Theses and Dissertations

The objective of this research was the development of an efficient method for the preparation of silver-polymer nanocomposites containing finely dispersed silver nanoparticles. The surface of nanosilver was functionalized by thiolation with 2-aminoethanethiol. Amino-modified nanosilver was covalently bonded to polyacrylic acid, biodegradable polymers like acid terminated polylactic acid, ester terminated poly(DL-lactide-co-glycolide) and acid terminated poly(DL lactide-co-glycolide) in the presence of diisopropylcarbodiimide by carbodiimide method. Esterification of the carboxyl groups of Ag-polyacrylic acid by hydrochloric acid in methanol resulted in the formation of a stable colloidal dispersion of Ag nanoparticles in the polymer matrix. It was observed that not ...


Molecular Docking, Synthesis And Evaluation Of Pyrrolo[2,1-C][1,4]Benzodiazepines Derivatives As Non-Β-Lactam Β-Lactamases Inhibitors, Joseph Osamudiamen Osazee Aug 2016

Molecular Docking, Synthesis And Evaluation Of Pyrrolo[2,1-C][1,4]Benzodiazepines Derivatives As Non-Β-Lactam Β-Lactamases Inhibitors, Joseph Osamudiamen Osazee

Electronic Theses and Dissertations

Our research aim was to design, synthesize, and study the competitive enzyme inhibition kinetics of pyrrolo[2,1-c][1,4]benzodiazepine (PBD) derivatives as potential non-²-lactam ²-lactamase inhibitors. All compounds (1-13) passed the Lipinski’s rule of 5 test and were docked into the active site of TEM-1 ²-lactamase. PBD derivatives 1-7 were synthesized in high yields and tested for their potency against TEM-1 and P99 ²-lactamases. Kinetic data showed that compounds 1, 4, 5, and 7 possessed inhibitory activity against TEM-1 ranging from 4-34 %. Docking results revealed significant interactive spanning of the active site of TEM-1 by ...


Synthesis, Characterization And Biological Evaluation Of Pyrrolo[2,1-C][1,4]Benzodiazepines For Cytotoxicity And Serine Β-Lactamases Inhibition, Joel K. Annor-Gyamfi Aug 2016

Synthesis, Characterization And Biological Evaluation Of Pyrrolo[2,1-C][1,4]Benzodiazepines For Cytotoxicity And Serine Β-Lactamases Inhibition, Joel K. Annor-Gyamfi

Electronic Theses and Dissertations

Pyrrolo[2,1-c][1,4]benzodiazepine (PBD) derivatives possess cancerostatic and anti-infective properties thus making them candidates of possible antibacterial agents. ²-lactam antibiotics are vital weapons for the treatment of bacterial infections, but their existence and effectiveness has been faced with resistance from ²-lactamases. Therefore, the need for new effective antimicrobial drugs is very crucial. In this work, we synthesized in high yields, PBD analogs 13, 5 and 79 in three to four synthetic steps from commercially available L-proline and isatoic anhydride. MTT Assay was employed to test the in vitro cytotoxicity of PBD analogs 1, 2, 5 ...


Homological Characterizations Of Quasi-Complete Intersections, Jason M. Lutz Aug 2016

Homological Characterizations Of Quasi-Complete Intersections, Jason M. Lutz

Dissertations, Theses, and Student Research Papers in Mathematics

Let R be a commutative ring, (f) an ideal of R, and E = K(f; R) the Koszul complex. We investigate the structure of the Tate construction T associated with E. In particular, we study the relationship between the homology of T, the quasi-complete intersection property of ideals, and the complete intersection property of (local) rings.

Advisers: Luchezar L. Avramov and Srikanth B. Iyengar


The Influence Of The Electric Supply Industry On Economic Growth In Less Developed Countries, Edward Richard Bee Aug 2016

The Influence Of The Electric Supply Industry On Economic Growth In Less Developed Countries, Edward Richard Bee

Dissertations

This study measures the impact that electrical outages have on manufacturing production in 135 less developed countries using stochastic frontier analysis and data from World Bank’s Investment Climate surveys. Outages of electricity, for firms with and without backup power sources, are the most frequently cited constraint on manufacturing growth in these surveys.

Outages are shown to reduce output below the production frontier by almost five percent in Africa and by a lower percentage in South Asia, Southeast Asia and the Middle East and North Africa. Production response to outages is quadratic in form. Outages also increase labor cost, reduce ...


Hybrid Chebyshev Polynomial Scheme For The Numerical Solution Of Partial Differential Equations, Balaram Khatri Ghimire Aug 2016

Hybrid Chebyshev Polynomial Scheme For The Numerical Solution Of Partial Differential Equations, Balaram Khatri Ghimire

Dissertations

In the numerical solution of partial differential equations (PDEs), it is common to find situations where the best choice is to use more than one method to arrive at an accurate solution. In this dissertation, hybrid Chebyshev polynomial scheme (HCPS) is proposed which is applied in two-step approach and one-step approach. In the two-step approach, first, Chebyshev polynomials are used to approximate a particular solution of a PDE. Chebyshev nodes which are the roots of Chebyshev polynomials are used in the polynomial interpolation due to its spectral convergence. Then, the resulting homogeneous equation is solved by boundary type methods including ...


Kelt-10b: The First Transiting Exoplanet From The Kelt-South Survey - A Hot Sub-Jupiter Transiting A V=10.7 Early G-Star, R. B. Kuhn, J. E. Rodriguez, K. A. Collins, M. B. Lund, R. J. Siverd, K. D. Colón, J. Pepper, K. G. Stassun, P. A. Cargile, D. J. James, K. Penev, G. Zhou, D. Bayliss, T. G. Tan, I. A. Curtis, S. Udry, D. Segransan, D. Mawet, S. Dhital, J. Soutter, R. Hart, B. Carter, B. S. Gaudi, G. Myers, T. G. Beatty, J. D. Eastman, D. E. Reichart, J. B. Haislip, J. F. Kielkopf, A. Bieryla, D. W. Latham, Eric L.N. Jensen, T. E. Oberst, D. J. Stevens Jul 2016

Kelt-10b: The First Transiting Exoplanet From The Kelt-South Survey - A Hot Sub-Jupiter Transiting A V=10.7 Early G-Star, R. B. Kuhn, J. E. Rodriguez, K. A. Collins, M. B. Lund, R. J. Siverd, K. D. Colón, J. Pepper, K. G. Stassun, P. A. Cargile, D. J. James, K. Penev, G. Zhou, D. Bayliss, T. G. Tan, I. A. Curtis, S. Udry, D. Segransan, D. Mawet, S. Dhital, J. Soutter, R. Hart, B. Carter, B. S. Gaudi, G. Myers, T. G. Beatty, J. D. Eastman, D. E. Reichart, J. B. Haislip, J. F. Kielkopf, A. Bieryla, D. W. Latham, Eric L.N. Jensen, T. E. Oberst, D. J. Stevens

Physics & Astronomy Faculty Works

We report the discovery of KELT-10b, the first transiting exoplanet discovered using the KELT-South telescope. KELT-10b is a highly inflated sub-Jupiter mass planet transiting a relatively bright V = 10.7 star (TYC 8378-64-1), with Teff = 5948 ± 74 K, log g = 4.319_{-0.030}^{+0.020} and [Fe/H] = 0.09_{-0.10}^{+0.11}, an inferred mass M = 1.112_{-0.061}^{+0.055} M and radius R = 1.209_{-0.035}^{+0.047} R. The planet has a radius Rp = 1.399_{-0.049}^{+0.069} RJ and mass Mp = 0.679_{-0.038 ...


On Fixed Points, Diagonalization, And Self-Reference, Bernd Buldt Jul 2016

On Fixed Points, Diagonalization, And Self-Reference, Bernd Buldt

Philosophy Faculty Publications

We clarify the respective roles fixed points, diagonalization, and self- reference play in proofs of Gödel’s first incompleteness theorem.


Ogden College Of Science & Engineering Newsletter (Summer 2016), Cheryl Stevens, Dean Jul 2016

Ogden College Of Science & Engineering Newsletter (Summer 2016), Cheryl Stevens, Dean

Ogden College of Science & Engineering Publications

No abstract provided.


On Abstract Modular Inference Systems And Solvers, Yuliya Lierler, Miroslaw Truszczyński Jul 2016

On Abstract Modular Inference Systems And Solvers, Yuliya Lierler, Miroslaw Truszczyński

Computer Science Faculty Publications

Integrating diverse formalisms into modular knowledge representation systems offers increased expressivity, modeling convenience, and computational benefits. We introduce the concepts of abstract inference modules and abstract modular inference systems to study general principles behind the design and analysis of model generating programs, or solvers, for integrated multi-logic systems. We show how modules and modular systems give rise to transition graphs, which are a natural and convenient representation of solvers, an idea pioneered by the SAT community. These graphs lend themselves well to extensions that capture such important solver design features as learning. In the paper, we consider two flavors of ...


Effects Of Surface Charge On The Anomalous Light Extinction From Metallic Nanoparticles, Andres H. La Rosa, Edin Sijercic Jun 2016

Effects Of Surface Charge On The Anomalous Light Extinction From Metallic Nanoparticles, Andres H. La Rosa, Edin Sijercic

Andres H. La Rosa

The effects of extraneous surface charges on the anomalous extinction from metallic nanoparticles are studied via an application of the extended Mie theory by Bohren and Hunt. Due to the sensitivity of the higher multipolar resonance on the surface charges, it is found that quenching of the anomalous resonance can be observed with presence of only a modest amount of charges on these particles. The observed effects thus provide a rather sensitive mechanism for the monitoring of the neutrality of these nanoparticles using far field scattering approaches.


Energy Consumption Prediction With Big Data: Balancing Prediction Accuracy And Computational Resources, Katarina Grolinger, Miriam Am Capretz, Luke Seewald Jun 2016

Energy Consumption Prediction With Big Data: Balancing Prediction Accuracy And Computational Resources, Katarina Grolinger, Miriam Am Capretz, Luke Seewald

Electrical and Computer Engineering Publications

In recent years, advances in sensor technologies and expansion of smart meters have resulted in massive growth of energy data sets. These Big Data have created new opportunities for energy prediction, but at the same time, they impose new challenges for traditional technologies. On the other hand, new approaches for handling and processing these Big Data have emerged, such as MapReduce, Spark, Storm, and Oxdata H2O. This paper explores how findings from machine learning with Big Data can benefit energy consumption prediction. An approach based on local learning with support vector regression (SVR) is presented. Although local learning itself is ...


Topological Data Analysis Of Biological Aggregation Models, Chad M. Topaz, Lori B. Ziegelmeir, Tom Halverson Jun 2016

Topological Data Analysis Of Biological Aggregation Models, Chad M. Topaz, Lori B. Ziegelmeir, Tom Halverson

Lori Beth Ziegelmeier

No abstract provided.


Topological Data Analysis Of Biological Aggregation Models, Chad M. Topaz, Lori B. Ziegelmeir, Tom Halverson Jun 2016

Topological Data Analysis Of Biological Aggregation Models, Chad M. Topaz, Lori B. Ziegelmeir, Tom Halverson

Chad M. Topaz

No abstract provided.


Biological Aggregation Driven By Social And Environmental Factors: A Nonlocal Model And It Degenerate Cahn-Hilliard Approximation, Andrew J. Bernoff, Chad Topaz Jun 2016

Biological Aggregation Driven By Social And Environmental Factors: A Nonlocal Model And It Degenerate Cahn-Hilliard Approximation, Andrew J. Bernoff, Chad Topaz

Chad M. Topaz

No abstract provided.


Flipped Calculus: A Study Of Student Performance And Perceptions, Lori B. Ziegelmeir, Chad M. Topaz Jun 2016

Flipped Calculus: A Study Of Student Performance And Perceptions, Lori B. Ziegelmeir, Chad M. Topaz

Chad M. Topaz

No abstract provided.


Projected Temperature And Precipitation Changes In Central And East Texas Over The Next 50 Years, Katharyn Cotsakis Jun 2016

Projected Temperature And Precipitation Changes In Central And East Texas Over The Next 50 Years, Katharyn Cotsakis

Ursidae: The Undergraduate Research Journal at the University of Northern Colorado

No abstract provided.


Overexpression Of The Bcl11a Transcription Factor In Basal-Like Versus Luminal Breast Cancer Cells, Alexis Cororan, Matthew Deselm Jun 2016

Overexpression Of The Bcl11a Transcription Factor In Basal-Like Versus Luminal Breast Cancer Cells, Alexis Cororan, Matthew Deselm

Ursidae: The Undergraduate Research Journal at the University of Northern Colorado

No abstract provided.


Face-Wise Chromatic Number, Cat Myrant Jun 2016

Face-Wise Chromatic Number, Cat Myrant

Ursidae: The Undergraduate Research Journal at the University of Northern Colorado

The chromatic number is a well-studied graph invariant. This is the smallest number of colors necessary to color all the vertices such that no two vertices adjacent to the same edge are the same color. It has a myriad of applications from scheduling problems to cartography. Here we consider what happens when we color vertices with respect to faces instead of edges. That is, two vertices adjacent to the same face must not be the same color. We call this invariant the face-wise chromatic number (fwcn). We will see how to compute the fwcn for a variety of graphs and ...


Defining The Spatial And Average Intensity Of The Louisville Urban Heat Island, Joshua Clark Jun 2016

Defining The Spatial And Average Intensity Of The Louisville Urban Heat Island, Joshua Clark

Ursidae: The Undergraduate Research Journal at the University of Northern Colorado

The urban heat island (UHI) effect, a phenomenon where the urban area will be warmer than the rural surroundings, may adversely impact human health and energy consumption via heat waves and rolling blackouts. A quantitative assessment of the UHI in Louisville, Kentucky was conducted through climatological analysis of five observation stations over a 5-year period from 2009 –2013. Results indicate the presence of a large UHI extending beyond 40 km, with an average intensity of 4.84°C between the most rural station and the urban control. By analyzing the temperature differences between all stations based on time and meteorological ...


The Safe Bet: An Exploration Of Games Of Chance, Alex Clayton Ellis, Thomas Hicks Jun 2016

The Safe Bet: An Exploration Of Games Of Chance, Alex Clayton Ellis, Thomas Hicks

Ursidae: The Undergraduate Research Journal at the University of Northern Colorado

The purpose of this study is to explore motivations and behaviors related to games of chance. An online snowball sample of 70 gamers completed the 25-item questionnaire consisting of questions measuring intelligence, motivation, amenities, and motivation to learn games of chance. T-test results indicated that males were more motivated by complexity and house odds of games than females. A visual inspection of the crosstab scores of the knowledge test revealed that players who prefer table games scored higher on the knowledge test than players that prefer slot machines. Also, the data suggested that slot players prefer games that require little ...