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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 ...


Securecoin: A Robust Secure And Effi#14;Cient Protocol For Anonymous Bitcoin Ecosystem, Maged H. Ibrahim Mar 2017

Securecoin: A Robust Secure And Effi#14;Cient Protocol For Anonymous Bitcoin Ecosystem, Maged H. Ibrahim

Maged Ibrahim

Bitcoin is the #12;rst decentralized peer-to-peer electronic
virtual asset and payment cryptocurrency, through which,
users can transact digital currency directly, without the
need for an intermediary (or authority), using a hashed
version of cryptographic public keys, as pseudonyms
called addresses. The Bitcoin ecosystem was supposed
to be anonymous and untraceable. However, transactions
from input to output addresses of the Bitcoin users are
observed to be linkable, therefore, missing unlinkability
as an important requirement of anonymity. Several pro-
tocols appeared to enhance Bitcoin users' anonymity and
to ensure unlinkability of input-output addresses, to make
input and output addresses of transactions ...


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.


Penalized Nonparametric Scalar-On-Function Regression Via Principal Coordinates, Philip T. Reiss, David L. Miller, Pei-Shien Wu, Wen-Yu Hua Dec 2016

Penalized Nonparametric Scalar-On-Function Regression Via Principal Coordinates, Philip T. Reiss, David L. Miller, Pei-Shien Wu, Wen-Yu Hua

Philip T. Reiss

A number of classical approaches to nonparametric regression have recently been extended to the case of functional predictors. This paper introduces a new method of this type, which extends intermediate-rank penalized smoothing to scalar-on-function regression. The core idea is to regress the response on leading principal coordinates defined by a relevant distance among the functional predictors, while applying a ridge penalty. Our publicly available implementation, based on generalized additive modeling software, allows for fast optimal tuning parameter selection and for extensions to multiple functional predictors, exponential family-valued responses, and mixed-effects models. In an application to signature verification data, the proposed ...


What Will Happen Here?, Sidney Fourteen Dec 2016

What Will Happen Here?, Sidney Fourteen

Sidney Fourteen

Ut nisl justo, suscipit et sem vel, consequat euismod leo. Fusce in ultrices dui, at suscipit odio. Pellentesque consequat, diam maximus convallis molestie, est ipsum sagittis sem, sit amet vestibulum tortor ligula in lectus. Sed congue ipsum nulla, nec pharetra diam aliquet non. Aenean interdum augue diam, ac tristique elit blandit non. Etiam rhoncus in sapien sed suscipit. Quisque ac est eu justo sodales ornare. Duis tempor congue orci vitae ornare. Proin eu tellus lacus. Proin luctus ante at iaculis feugiat. In eget erat ac lacus iaculis interdum eget vel massa.


The Creation Of A Video Review Guide For The Free-Response Section Of The Advanced Placement Calculus Exam, Jeffrey Brown Dec 2016

The Creation Of A Video Review Guide For The Free-Response Section Of The Advanced Placement Calculus Exam, Jeffrey Brown

Honors Theses

The Creation of a Video Review Guide for the Free-Response Section of the Advanced Placement Calculus Exam follows the creation of a resource to help students prepare for the College Board’s Advanced Placement Calculus Exam. This project originated out of the authors personal experiences in preparing for this exam. The goal of the project was to create an accessible resource that reviews content, provides insights into the Advanced Placement exam, and creates successful habits in student responses. This paper, chronologically, details the development of the resource and a reflection on the final product and future uses.


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 ...


Diazonium 4-(Trifluorovinyloxy) Perfluorobutanesulfonyl Benzenesulfonimide Zwitterionic Monomer Synthesis, Isaac D. Addo Dec 2016

Diazonium 4-(Trifluorovinyloxy) Perfluorobutanesulfonyl Benzenesulfonimide Zwitterionic Monomer Synthesis, Isaac D. Addo

Electronic Theses and Dissertations

3-Diazonium- 4-(trifluorovinyloxy) - perfluorobutanesulfonyl benzenesulfonimide zwitterionic monomer (see figure 1) is proposed to be polymerized and further act as a new electrolyte for Polymer exchange membrane fuel cells (PEMFCs). One reason is that, the aromatic trifluorovinyl aryl ether (TFVE) group can easily be homopolymerized to aromatic perfluorocyclobutane (PFCB) polymer. Furthermore, the diazonium moiety in the monomer is expected to covalently attach the electrolyte to the carbon electrodes support. The perfluoroalkyl(aryl) sulfonimide (PFSI) pendant provides good chemical and mechanical stability as well as better proton conductivity. Several multi-step synthetic schemes are designed to obtain such monomer from perfluoroalkyl(aryl) sulfonimide ...


Comparison Of Two Methods For Developing Aggregate Population-Based Models, Oyebola E. Oyero Dec 2016

Comparison Of Two Methods For Developing Aggregate Population-Based Models, Oyebola E. Oyero

Electronic Theses and Dissertations

Aggregate models incorporate the variation between individual parameters of individualbased models to construct a population-based model. This thesis focuses on the comparison of two different methods for creating these population-based models. The first method, the individual parameter distribution technique (IPD) focuses on the similarities and variation of parameters in an individual-based model as calculated using individual data sets [4]. The second method we consider is the nonlinear mixed effect method (NLME), which is primarily used in modeling repeated measurement data. In the NLME approach, both the fixed effects and random effects of the parameter values are estimated in the model ...


A Multi-Indexed Logistic Model For Time Series, Xiang Liu Dec 2016

A Multi-Indexed Logistic Model For Time Series, Xiang Liu

Electronic Theses and Dissertations

In this thesis, we explore a multi-indexed logistic regression (MILR) model, with particular emphasis given to its application to time series. MILR includes simple logistic regression (SLR) as a special case, and the hope is that it will in some instances also produce significantly better results. To motivate the development of MILR, we consider its application to the analysis of both simulated sine wave data and stock data. We looked at well-studied SLR and its application in the analysis of time series data. Using a more sophisticated representation of sequential data, we then detail the implementation of MILR. We compare ...


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 ...


Photonic Crystals With Alternate Arrays Of Rods And Holes In A Low Dielectric-Index Material, Dimitar L. Dimitrov Sep 2016

Photonic Crystals With Alternate Arrays Of Rods And Holes In A Low Dielectric-Index Material, Dimitar L. Dimitrov

All Graduate Works by Year: Dissertations, Theses, and Capstone Projects

This thesis theoretically deals with the propagation of electromagnetic waves (light beams) in periodically modulated dielectric material structures based on Maxwell’s equations. We are interested in novel light propagation characteristics in these man-made dielectric material structures for practical applications, especially on optical communications and computations. Since the wavelength range of light is on the same order of magnitude as the modulation periods of dielectric materials, an analogy of the light propagation in dielectric-constant modulated structures with the electron transport in solid-state crystals is used throughout my thesis by using a term “photonic crystals (PhCs)” referring to these dielectric structures ...


Transmission Of Focused Picosecond Light Pulse Through Multimode Fibers, Yin Cen Sep 2016

Transmission Of Focused Picosecond Light Pulse Through Multimode Fibers, Yin Cen

All Graduate Works by Year: Dissertations, Theses, and Capstone Projects

This thesis focuses on a technique of delivering spatially focused and temporally compressed picosecond laser pulses through multimode fibers. This study was inspired by recent success in focusing light through optically diffusive media of which multimode fibers were a special case in terms of causing scrambled phase distribution in the transmitted light. The approach involved controlling the phase distribution of incoming beam using a deformable mirror prior to its entry into the multimode fiber in order to achieve constructive interference at selected spots in the output. With phase control, the intensity of the focused light at the output can be ...


Some 2-Categorical Aspects In Physics, Arthur Parzygnat Sep 2016

Some 2-Categorical Aspects In Physics, Arthur Parzygnat

All Graduate Works by Year: Dissertations, Theses, and Capstone Projects

2-categories provide a useful transition point between ordinary category theory and infinity-category theory where one can perform concrete computations for applications in physics and at the same time provide rigorous formalism for mathematical structures appearing in physics. We survey three such broad instances. First, we describe two-dimensional algebra as a means of constructing non-abelian parallel transport along surfaces which can be used to describe strings charged under non-abelian gauge groups in string theory. Second, we formalize the notion of convex and cone categories, provide a preliminary categorical definition of entropy, and exhibit several examples. Thirdly, we provide a universal description ...


Isolating Retrograde And Prograde Rayleigh-Wave Modes Using A Polarity Mute, Gabriel Gribler, Lee M. Liberty, T. Dylan Mikesell, Paul Michaels Sep 2016

Isolating Retrograde And Prograde Rayleigh-Wave Modes Using A Polarity Mute, Gabriel Gribler, Lee M. Liberty, T. Dylan Mikesell, Paul Michaels

Geosciences Faculty Publications and Presentations

Estimates of S-wave velocity with depth from Rayleigh-wave dispersion data are limited by the accuracy of fundamental and/or higher mode signal identification. In many scenarios, the fundamental mode propagates in retrograde motion, whereas higher modes propagate in prograde motion. This difference in particle motion (or polarity) can be used by joint analysis of vertical and horizontal inline recordings. We have developed a novel method that isolates modes by separating prograde and retrograde motions; we call this a polarity mute. Applying this polarity mute prior to traditional multichannel analysis of surface wave (MASW) analysis improves phase velocity estimation for fundamental ...


Probabilistic Methods In Information Theory, Erik W. Pachas Sep 2016

Probabilistic Methods In Information Theory, Erik W. Pachas

Electronic Theses, Projects, and Dissertations

Given a probability space, we analyze the uncertainty, that is, the amount of information of a finite system, by studying the entropy of the system. We also extend the concept of entropy to a dynamical system by introducing a measure preserving transformation on a probability space. After showing some theorems and applications of entropy theory, we study the concept of ergodicity, which helps us to further analyze the information of the system.


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.


Pagi World: A Physically Realistic, General-Purpose Simulation Environment For Developmental Ai Systems, John Licato, Selmer Bringsjord Aug 2016

Pagi World: A Physically Realistic, General-Purpose Simulation Environment For Developmental Ai Systems, John Licato, Selmer Bringsjord

Computer Science Faculty Presentations

There has long been a need for a simulation environment rich enough to support the development of an AI system sufficiently knowledgeable about physical causality to pass certain tests of Psychometric Artificial Intelligence (PAI) and Psychometric Artificial General Intelligence (PAGI). In this article, we present a simulation environment, PAGI World, which is: cross-platform (as it can be run on all major operating systems); open-source (and thus completely free of charge to use); able to work with AI systems written in almost any programming language; as agnostic as possible regarding which AI approach is used; and easy to set up and ...


Creating A Better World With Information And Communication Technologies: Health Equity, Sajda Qureshi Aug 2016

Creating A Better World With Information And Communication Technologies: Health Equity, Sajda Qureshi

Sajda Qureshi

When news broke on 23rd July 2014, that a case of the deadly virus Ebola had been confirmed in Lagos, home to about 21 million people and a major transportation hub, the World held its breath. If not contained, this virus could spread quickly killing a multitude of people around the World. By 15th October, cases of Ebola had been recorded around the World: Liberia reported 4249 cases with 2458 deaths, Sierra Leone reported 3252 cases with 1183 deaths, Guinea 1472 cases with 843 deaths, Nigeria reported 20 cases with 8 deaths, the USA reported 3 cases and 1 death ...


Are We Making A Better World With Information And Communication Technology For Development (Ict4d) Research? Findings From The Field And Theory Building, Sajda Qureshi Aug 2016

Are We Making A Better World With Information And Communication Technology For Development (Ict4d) Research? Findings From The Field And Theory Building, Sajda Qureshi

Sajda Qureshi

As Information and Communication Technologies (ICTs) continue to penetrate people’s lives the world over, there is a sense that understanding the role of ICTs in the context of development needs to be conceptualized theoretically while making empirical contributions that add to what we know (Avgerou, 2008; Davison, 2012; Sein and Harindranath, 2004; Sahay and Walsham, 1995). Other scholars have pointed to the importance of this research for the field of Information Systems (ISs) in offering broader contributions. Avgerou (2008) suggests that in the era of globalization such research offers contributions in ISs beyond “organizational organizational and national boundaries and ...


Arbitrage Between Ethanol And Gasoline: Evidence From Motor Fuel Consumption In Brazil, Sebastien Pouliot Aug 2016

Arbitrage Between Ethanol And Gasoline: Evidence From Motor Fuel Consumption In Brazil, Sebastien Pouliot

Sebastien Pouliot

Unlike regular cars, ex-fuel vehicles (FFVs) allow motorists to fuel on motor blends that contain between zero and one hundred percent of ethanol. This paper investigates how motorists arbitrage between hydrous ethanol and gasoline using aggregate fuel consumption data in Brazil. The ability of FFV motorists to arbitrage between fuel blends shapes of aggregate demands for hydrous ethanol and gasoline. I estimate using nonlinear seemingly unrelated regressions the demands for hydrous ethanol and gasoline in Brazil, and motorists preferences for hydrous ethanol. I find that on average, accounting for the relative energy contents of the two fuels, FFV motorists in ...


Biofuels Development In Maine: Using Trees To Oil The Wheels Of Sustainabilty, Caroline L. Noblet, Mario F. Teisl, Katherine H. Farrow, Jonathan Rubin Aug 2016

Biofuels Development In Maine: Using Trees To Oil The Wheels Of Sustainabilty, Caroline L. Noblet, Mario F. Teisl, Katherine H. Farrow, Jonathan Rubin

Jonathan Rubin

As national standards require increased use of renewable transportation fuels by 2022, Maine is positioned to be a leader in wood-based cellulosic ethanol production and use. Caroline Noblet, Mario Teisl, Katherine Farrow, and Jonathan Rubin consider Mainers’ willingness to accept and use biofuels. They document the current level of consumer knowledge and behavior and identify factors (environmental, economic, and energy security) that may assist or constrain drivers from purchasing biofuels.


Biofuels Development In Maine: Using Trees To Oil The Wheels Of Sustainabilty, Caroline L. Noblet, Mario F. Teisl, Katherine H. Farrow, Jonathan Rubin Aug 2016

Biofuels Development In Maine: Using Trees To Oil The Wheels Of Sustainabilty, Caroline L. Noblet, Mario F. Teisl, Katherine H. Farrow, Jonathan Rubin

Jonathan Rubin

As national standards require increased use of renewable transportation fuels by 2022, Maine is positioned to be a leader in wood-based cellulosic ethanol production and use. Caroline Noblet, Mario Teisl, Katherine Farrow, and Jonathan Rubin consider Mainers’ willingness to accept and use biofuels. They document the current level of consumer knowledge and behavior and identify factors (environmental, economic, and energy security) that may assist or constrain drivers from purchasing biofuels.


Transportation And Climate Change, Jonathan Rubin Aug 2016

Transportation And Climate Change, Jonathan Rubin

Jonathan Rubin

The transportation and residential sectors in Maine use a large proportion of fossil fuels, primarily petroleum products, and are a major contributor to greenhouse gas emissions. Jonathan Rubin’s article on transportation reviews mechanisms by which petroleum demand and greenhouse gas emissions can be reduced, emphasizing state and federal legislation to achieve these goals. He describes ways in which transportation systems will be affected by and have to adapt to climate change.


Gasoline Consumption Attributable To Gasoline Powered Watercraft Use In Maine, Jonathan Rubin, Charles Morrris, Suzanne K. Hart Aug 2016

Gasoline Consumption Attributable To Gasoline Powered Watercraft Use In Maine, Jonathan Rubin, Charles Morrris, Suzanne K. Hart

Jonathan Rubin

No abstract provided.


Biomass And Biofuels In Maine: Estimating Supplies For Expanding The Forest Products Industry, Jonathan Rubin, Kate Dickerson, Jacob Kavkewitz Aug 2016

Biomass And Biofuels In Maine: Estimating Supplies For Expanding The Forest Products Industry, Jonathan Rubin, Kate Dickerson, Jacob Kavkewitz

Jonathan Rubin

This paper estimates the renewable energy potential of Maine’s forest resources, and how much energy these resources could potentially provide the state. Using the most recent state-specific data available, and a methodology similar to the Billion Tons Report, we find that ethanol production from Maine’s forest residues could potentially provide 18% of Maine’s transportation (gasoline) fuels with a fermentation wood to ethanol process. Making Fischer-Tropsch diesel (F-T diesel) using forest residues can replace 39% of Maine’s petro-diesel consumption. Actual levels of biofuels that can be produced will depend on conversion factors and forestry residue removals that ...