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Full-Text Articles in Physical Sciences and Mathematics

Does Spelling Count? Reflections On Writing In The Mathematics Classroom, Christopher D. Goff Jul 2017

Does Spelling Count? Reflections On Writing In The Mathematics Classroom, Christopher D. Goff

Christopher Goff

The written word is scarce in the stereotypical mathematics course, which instead emphasizes the routine solving of problems. But having students explain their solutions in writing can pave the way to more critical mathematical thinking. This talk will examine the use of writing as a tool to learn mathematics. We will reflect on: reasons to incorporate writing in a mathematics class; which courses lend themselves to writing assignments; what types of assignments to use; samples of student work; and whether using writing can actually improve student learning. Depending on the assignments, writing can also incorporate several “Basic Principles” of AMATYC’s …


Diophantine Geometry, Eulerian Number Theory, And Undergraduates, Christopher D. Goff Jul 2017

Diophantine Geometry, Eulerian Number Theory, And Undergraduates, Christopher D. Goff

Christopher Goff

This talk will tell the story of how a geometry problem of Diophantus led all the way to a paper of Euler on number theory. Then we will describe how translating this work of Euler led ultimately to an undergraduate project in a History of Mathematics course last spring.


Euler's Multiple Solutions To A Diophantine Problem, Christopher D. Goff Jul 2017

Euler's Multiple Solutions To A Diophantine Problem, Christopher D. Goff

Christopher Goff

No abstract provided.


Dynkin Diagrams And Fusion Algebras, Christopher D. Goff Jul 2017

Dynkin Diagrams And Fusion Algebras, Christopher D. Goff

Christopher Goff

No abstract provided.


Is Hollywood Good For Mathematics? (A Brief Discussion)., Christopher D. Goff Jul 2017

Is Hollywood Good For Mathematics? (A Brief Discussion)., Christopher D. Goff

Christopher Goff

Mathematics has played a role in many recent films, such as Good Will Hunting, A Beautiful Mind, and Proof. But how exactly is mathematics being portrayed? What ramifications does this portrayal have on our ”students,” broadly defined? In Good Will Hunting, mathematics is Will’s ticket out of his lower-class life and into a prestigious existence. In A Beautiful Mind, mathematical talent and schizophrenia are identified, at least in part. In Proof, mathematics not only links a daughter to her late father, but it also provides a backdrop for much of the story’s conflict. In this discussion, we will begin by …


Euler’S Algebraic Creativity And Undergraduate Math, Christopher D. Goff Jul 2017

Euler’S Algebraic Creativity And Undergraduate Math, Christopher D. Goff

Christopher Goff

This talk will describe the author’s work translating a paper of Euler on number theory, and how researching the history of this paper led back to Lagrange, Fermat, and ultimately to a geometry problem of Diophantus. We will investigate Euler’s algebraic creativity and Lagrange’s explanation of his own method, inspired by Fermat. Moreover, we will demonstrate one way in which this paper of Euler’s has been used as part of a project in an undergraduate history of mathematics course. We will even investigate the continuation of Euler’s work.


Movie Math: Mathematical Talent = Mental Illness, Christopher D. Goff Jul 2017

Movie Math: Mathematical Talent = Mental Illness, Christopher D. Goff

Christopher Goff

No abstract provided.


Fusion Algebras & Accidental Trigonometry, Christopher D. Goff Jul 2017

Fusion Algebras & Accidental Trigonometry, Christopher D. Goff

Christopher Goff

Have you ever been working in one area of math, and another area arises unexpectedly? While working on a problem in 2008, we inadvertently discovered some trigonometric identities. This talk will explain fusion algebras, which are relatively simple algebraic objects that demonstrate nice algebraic applications of linear algebra. Then we will see how trigonometry can arise in even this most algebraic of settings.


How (West) Hollywood Adds Up: A Queer Theoretical View Of Mathematics And Mathematicians In Film, Christopher D. Goff Jul 2017

How (West) Hollywood Adds Up: A Queer Theoretical View Of Mathematics And Mathematicians In Film, Christopher D. Goff

Christopher Goff

No abstract provided.


Fusion Algebras & Accidental Trigonometry, Christopher D. Goff Jul 2017

Fusion Algebras & Accidental Trigonometry, Christopher D. Goff

Christopher Goff

No abstract provided.


Ethnomathematics: Challenging Traditional Notions Of Mathematical Authority, Christopher D. Goff Jul 2017

Ethnomathematics: Challenging Traditional Notions Of Mathematical Authority, Christopher D. Goff

Christopher Goff

No abstract provided.


A Beautiful Mind, Christopher D. Goff Jul 2017

A Beautiful Mind, Christopher D. Goff

Christopher Goff

No abstract provided.


Alan Turing: The Man Behind The Machine, Christopher D. Goff Jul 2017

Alan Turing: The Man Behind The Machine, Christopher D. Goff

Christopher Goff

No abstract provided.


Alan Turing: The Man Behind The Machine, Christopher D. Goff Jul 2017

Alan Turing: The Man Behind The Machine, Christopher D. Goff

Christopher Goff

No abstract provided.


Alan Turing: The Man Behind The Machine, Christopher D. Goff Jul 2017

Alan Turing: The Man Behind The Machine, Christopher D. Goff

Christopher Goff

No abstract provided.


An Isomorphism Between The Fusion Algebras Of Vl+ And Type D(1) Level 2, Michael Cuntz, Christopher D. Goff Jul 2017

An Isomorphism Between The Fusion Algebras Of Vl+ And Type D(1) Level 2, Michael Cuntz, Christopher D. Goff

Christopher Goff

This talk will show that the fusion algebra of the vertex operator algebra VL+ (where L is a rank 1 even lattice) is isomorphic to the fusion algebra of the affine Kac-Moody Lie algebra of type D(1) at level 2.


Adoption Of Switchgrass Cultivation For Biofuel Under Uncertainty: A Discrete-Time Modeling Approach, Pralhad Burli, Eric Forgoston, Pankaj Lal, Lora Billings, Bernabas Wolde Jul 2017

Adoption Of Switchgrass Cultivation For Biofuel Under Uncertainty: A Discrete-Time Modeling Approach, Pralhad Burli, Eric Forgoston, Pankaj Lal, Lora Billings, Bernabas Wolde

Lora Billings

Production of biofuels from cellulosic sources, such as switchgrass, is being encouraged through mandates, incentives, and subsidies. However, uncertainty in future prices coupled with large establishment costs often inhibit their cultivation. Owing to their inability to incorporate uncertainty and dynamic decision-making, standard discounted cash flow techniques are ineffective for analyzing such investments. We formulate a discrete-time binomial framework to model output prices, allowing us to incorporate price uncertainty, stand age, and variable crop yields into the analytical framework. We analyze the feasibility of investments in switchgrass cultivation under varying price transition paths, evaluate the relationship between risk …


Adoption Of Switchgrass Cultivation For Biofuel Under Uncertainty: A Discrete-Time Modeling Approach, Pralhad Burli, Eric Forgoston, Pankaj Lal, Lora Billings, Bernabas Wolde Jul 2017

Adoption Of Switchgrass Cultivation For Biofuel Under Uncertainty: A Discrete-Time Modeling Approach, Pralhad Burli, Eric Forgoston, Pankaj Lal, Lora Billings, Bernabas Wolde

Eric Forgoston

Production of biofuels from cellulosic sources, such as switchgrass, is being encouraged through mandates, incentives, and subsidies. However, uncertainty in future prices coupled with large establishment costs often inhibit their cultivation. Owing to their inability to incorporate uncertainty and dynamic decision-making, standard discounted cash flow techniques are ineffective for analyzing such investments. We formulate a discrete-time binomial framework to model output prices, allowing us to incorporate price uncertainty, stand age, and variable crop yields into the analytical framework. We analyze the feasibility of investments in switchgrass cultivation under varying price transition paths, evaluate the relationship between risk …


Adoption Of Switchgrass Cultivation For Biofuel Under Uncertainty: A Discrete-Time Modeling Approach, Pralhad Burli, Eric Forgoston, Pankaj Lal, Lora Billings, Bernabas Wolde Jul 2017

Adoption Of Switchgrass Cultivation For Biofuel Under Uncertainty: A Discrete-Time Modeling Approach, Pralhad Burli, Eric Forgoston, Pankaj Lal, Lora Billings, Bernabas Wolde

Pankaj Lal

Production of biofuels from cellulosic sources, such as switchgrass, is being encouraged through mandates, incentives, and subsidies. However, uncertainty in future prices coupled with large establishment costs often inhibit their cultivation. Owing to their inability to incorporate uncertainty and dynamic decision-making, standard discounted cash flow techniques are ineffective for analyzing such investments. We formulate a discrete-time binomial framework to model output prices, allowing us to incorporate price uncertainty, stand age, and variable crop yields into the analytical framework. We analyze the feasibility of investments in switchgrass cultivation under varying price transition paths, evaluate the relationship between risk …


Dengue Virus Ns2b/Ns3 Protease Inhibitors Exploiting The Prime Side, Kuan-Hung Lin, Akbar Ali, Linah Rusere, Djade I. Soumana, Nese Kurt Yilmaz, Celia A. Schiffer Jul 2017

Dengue Virus Ns2b/Ns3 Protease Inhibitors Exploiting The Prime Side, Kuan-Hung Lin, Akbar Ali, Linah Rusere, Djade I. Soumana, Nese Kurt Yilmaz, Celia A. Schiffer

Celia A. Schiffer

The mosquito-transmitted dengue virus (DENV) infects millions of people in tropical and subtropical regions. Maturation of DENV particles requires proper cleavage of the viral polyprotein, including processing of 8 of the 13 substrate cleavage sites by dengue virus NS2B/NS3 protease. With no available direct-acting antiviral targeting DENV, NS2/NS3 protease is a promising target for inhibitor design. Current design efforts focus on the nonprime side of the DENV protease active site, resulting in highly hydrophilic and nonspecific scaffolds. However, the prime side also significantly modulates DENV protease binding affinity, as revealed by engineering the binding loop of aprotinin, a small protein …


A Pilot Study Of Computerized, Tailored Intervention To Promote Hpv Vaccination In Mexican-Heritage Adolescents, Angaela Chia-Chen Chen, Michael Todd, Ashish Amresh, Usha Menon, Laura Szalacha Jun 2017

A Pilot Study Of Computerized, Tailored Intervention To Promote Hpv Vaccination In Mexican-Heritage Adolescents, Angaela Chia-Chen Chen, Michael Todd, Ashish Amresh, Usha Menon, Laura Szalacha

Ashish Amresh

This study examined feasibility, acceptability, and preliminary effect of a computer-tailored intervention aimed at promoting HPV vaccination in Mexican-heritage adolescents aged 11-17. Among 46 Mexican-heritage parents who had one or more eligible children who had not received HPV vaccines, 91% (n = 42) completed the intervention and assessments via tablets in a vaccine clinic. Mean knowledge scores increased significantly from pre- to post-intervention. After the intervention, 95% (n = 40) of parents intended to get their children vaccinated; 50% (n = 21) of them consented to vaccination immediately, resulting in 24 adolescents being vaccinated at that time. All parents reported …


Answer Set Programming Paradigm, Yuliya Lierler Jun 2017

Answer Set Programming Paradigm, Yuliya Lierler

Yuliya Lierler

No abstract provided.


Mhealth Games As Rewards: Incentive Or Distraction?, Kevin Gary, Ryan Stoll, Pooja Rallabhandi, Mandar Patwardhan, Derek Hamel, Ashish Amresh, Armando Pina, Kevin Cleary, Zenaide Quezado Jun 2017

Mhealth Games As Rewards: Incentive Or Distraction?, Kevin Gary, Ryan Stoll, Pooja Rallabhandi, Mandar Patwardhan, Derek Hamel, Ashish Amresh, Armando Pina, Kevin Cleary, Zenaide Quezado

Ashish Amresh

Games may be employed for delivery of a clinical protocol, or as an incentive for protocol tasks. We focus on serious games in mHealth apps for pediatric patients with a chronic disease as an incentive for behavior modification. A patient is rewarded with enhanced gameplay in proportion to her/his compliance with a clinical protocol. The game-as-reward prevents fatigue and sustains patient engagement as the mHealth apps are used on a frequent basis when the affliction is a chronic disease. However, our experience shows a fine line between games that encourage engagement and ones that distract patients from protocol tasks.


Image-Based Identification Of Cell Cultures By Machine Learning, Oluleye Hezekiah Babatunde Jun 2017

Image-Based Identification Of Cell Cultures By Machine Learning, Oluleye Hezekiah Babatunde

Oluleye Babatunde

Biomedical laboratories often use different cell types in the same assay or the same cell type in different
assays. One cell type can become contaminated by another, or cells can be mis-identified, giving poor
results. Addressing these issues by DNA analyses can be time-consuming, labor intensive or costly to
implement. Here we uniquely employ Legendre moments (LM), Zernike moments (ZM), circularity and
a genetic algorithm (GA) to advance a computer-based vision system, and we task it to identify four cell
types used in virology: HeLa, Vero, BHK and PC3. By employing a k-nearest neighbor (kNN), multilayer
perceptron (MLP), Convolutional Neural …


Comparing Multiple Turbulence Restoration Algorithms Performance On Noisy Anisoplanatic Imagery, Michael Armand Rucci, Russell C. Hardie, Alexander J. Dapore Jun 2017

Comparing Multiple Turbulence Restoration Algorithms Performance On Noisy Anisoplanatic Imagery, Michael Armand Rucci, Russell C. Hardie, Alexander J. Dapore

Russell C. Hardie

In this paper, we compare the performance of multiple turbulence mitigation algorithms to restore imagery degraded by atmospheric turbulence and camera noise. In order to quantify and compare algorithm performance, imaging scenes were simulated by applying noise and varying levels of turbulence. For the simulation, a Monte-Carlo wave optics approach is used to simulate the spatially and temporally varying turbulence in an image sequence. A Poisson-Gaussian noise mixture model is then used to add noise to the observed turbulence image set. These degraded image sets are processed with three separate restoration algorithms: Lucky Look imaging, bispectral speckle imaging, and a …


Analysis Of Various Classification Techniques For Computer Aided Detection System Of Pulmonary Nodules In Ct, Barath Narayanan Narayanan, Russell C. Hardie, Temesguen Messay Jun 2017

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

Russell C. Hardie

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) …


On The Simulation And Mitigation Of Anisoplanatic Optical Turbulence For Long Range Imaging, Russell C. Hardie, Daniel A. Lemaster Jun 2017

On The Simulation And Mitigation Of Anisoplanatic Optical Turbulence For Long Range Imaging, Russell C. Hardie, Daniel A. Lemaster

Russell C. Hardie

We describe a numerical wave propagation method for simulating long range imaging of an extended scene under anisoplanatic conditions. Our approach computes an array of point spread functions (PSFs) for a 2D grid on the object plane. The PSFs are then used in a spatially varying weighted sum operation, with an ideal image, to produce a simulated image with realistic optical turbulence degradation. To validate the simulation we compare simulated outputs with the theoretical anisoplanatic tilt correlation and differential tilt variance. This is in addition to comparing the long- and short-exposure PSFs, and isoplanatic angle. Our validation analysis shows an …


Towards Querying And Visualization Of Large Spatio-Temporal Databases, Sugam Sharma Jun 2017

Towards Querying And Visualization Of Large Spatio-Temporal Databases, Sugam Sharma

Sugam Sharma

In any database model, data analysis can be eased by extracting a smaller set of the data of interest, called subset, from the mammoth original dataset. Thus, a subset helps enhance the performance of a system by avoiding the iteration through the huge parental data in further analysis. A subset, its specification, or the formal process for its extraction can be complex. In the database community, subsets are extracted through SQL-like queries and through visualization in the Geographic Information System (GIS) community. Both are iterative processes. An SQL query can be a composition of subqueries. Each subquery can be seen …


A Brief Review On Leading Big Data Models, Sugam Sharma, Udoyara S. Tim, Johnny S. Wong, Shashi Gadia, Subhash Sharma Jun 2017

A Brief Review On Leading Big Data Models, Sugam Sharma, Udoyara S. Tim, Johnny S. Wong, Shashi Gadia, Subhash Sharma

Sugam Sharma

Today, science is passing through an era of transformation, where the inundation of data, dubbed data deluge is influencing the decision making process. The science is driven by the data and is being termed as data science. In this internet age, the volume of the data has grown up to petabytes, and this large, complex, structured or unstructured, and heterogeneous data in the form of “Big Data” has gained significant attention. The rapid pace of data growth through various disparate sources, especially social media such as Facebook, has seriously challenged the data analytic capabilities of traditional relational databases. The velocity …


Contextual Motivation In Physical Activity By Means Of Association Rule Mining, Sugam Sharma, Udoyara Sunday Tim, Marinelle Payton, Hari Cohly, Shashi Gadia, Johnny Wong, Sudharshanam Karakala Jun 2017

Contextual Motivation In Physical Activity By Means Of Association Rule Mining, Sugam Sharma, Udoyara Sunday Tim, Marinelle Payton, Hari Cohly, Shashi Gadia, Johnny Wong, Sudharshanam Karakala

Sugam Sharma

The primary thrust of this work is to demonstrate the applicability of association rule mining in public health domain, focusing on physical activity and exercising. In this paper, the concept of association rule mining is shown assisting to promote the physical exercise as regular human activity. Specifically, similar to the prototypical example of association rule mining, market basket analysis, our proposed novel approach considers two events – exercise (sporadic) and sleep (regular) as the two items of the frequent set; and associating the former, exercise event, with latter, the daily occurring activity sleep at night, helps strengthening the frequency of …