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Physical Sciences and Mathematics Commons

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Virginia Commonwealth University

2020

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Articles 31 - 60 of 104

Full-Text Articles in Physical Sciences and Mathematics

Eco-Evolutionary Dynamics Of Microbial Communities, Lihong Zhao May 2020

Eco-Evolutionary Dynamics Of Microbial Communities, Lihong Zhao

Biology and Medicine Through Mathematics Conference

No abstract provided.


Parameter Identifiability And Estimation In A 1d Cardiovascular Fluid Dynamics Model, Mitchel J. Colebank May 2020

Parameter Identifiability And Estimation In A 1d Cardiovascular Fluid Dynamics Model, Mitchel J. Colebank

Biology and Medicine Through Mathematics Conference

No abstract provided.


Effects Of Slip On Highly Viscous Thin-Film Flows Inside A Vertical Tube, Mark S. Schwitzerlett May 2020

Effects Of Slip On Highly Viscous Thin-Film Flows Inside A Vertical Tube, Mark S. Schwitzerlett

Biology and Medicine Through Mathematics Conference

No abstract provided.


Emergence, Mechanics, And Development: How Behavior And Geometry Underlie Cowrie Seashell Form, Michael G. Levy, Michael R. Deweese May 2020

Emergence, Mechanics, And Development: How Behavior And Geometry Underlie Cowrie Seashell Form, Michael G. Levy, Michael R. Deweese

Biology and Medicine Through Mathematics Conference

No abstract provided.


Mathematical Modeling Of The Car T-Cell Therapy, Emek Kose, Elizabeth Zollinger, Samantha Elliott May 2020

Mathematical Modeling Of The Car T-Cell Therapy, Emek Kose, Elizabeth Zollinger, Samantha Elliott

Biology and Medicine Through Mathematics Conference

No abstract provided.


In Silico Mouse Model Of Infection And Immunity, Daniel Jonas, Michael Kirby, Alan R. Schenkel May 2020

In Silico Mouse Model Of Infection And Immunity, Daniel Jonas, Michael Kirby, Alan R. Schenkel

Biology and Medicine Through Mathematics Conference

No abstract provided.


Tympanal Asymmetry In A Parasitoid Fly: Small Asymmetries Produce Big Gains, Max Mikel-Stites, Anne E. Staples May 2020

Tympanal Asymmetry In A Parasitoid Fly: Small Asymmetries Produce Big Gains, Max Mikel-Stites, Anne E. Staples

Biology and Medicine Through Mathematics Conference

No abstract provided.


Estimation Of Insulin Sensitivity From Continuous Glucose Monitoring Data During An Intravenous Glucose Tolerance Test, Rachel Jennings, Jonathan Rolfs, Joseph Roxas, James Okusa, Jacqueline Virtudes May 2020

Estimation Of Insulin Sensitivity From Continuous Glucose Monitoring Data During An Intravenous Glucose Tolerance Test, Rachel Jennings, Jonathan Rolfs, Joseph Roxas, James Okusa, Jacqueline Virtudes

Biology and Medicine Through Mathematics Conference

No abstract provided.


Modeling Angiogenesis In Cutaneous Wound Healing, Ephraim Agyingi May 2020

Modeling Angiogenesis In Cutaneous Wound Healing, Ephraim Agyingi

Biology and Medicine Through Mathematics Conference

No abstract provided.


A Mathematical Model To Study The Crime Dynamics Spread Within Minority Communities, Maila Brucal-Hallare, Beatriz Cuartas, Anne Fernando, Ana Vivas-Barber May 2020

A Mathematical Model To Study The Crime Dynamics Spread Within Minority Communities, Maila Brucal-Hallare, Beatriz Cuartas, Anne Fernando, Ana Vivas-Barber

Biology and Medicine Through Mathematics Conference

No abstract provided.


Performance Of Phenomenological Models For Real-Time Forecasting The Covid-19 Epidemic, Kimberlyn Roosa, Gerardo Chowell May 2020

Performance Of Phenomenological Models For Real-Time Forecasting The Covid-19 Epidemic, Kimberlyn Roosa, Gerardo Chowell

Biology and Medicine Through Mathematics Conference

No abstract provided.


A Phosphoinositide-Based Model Of Actin Waves In Frustrated Phagocytosis, Marco A. Avila Ponce De Leon May 2020

A Phosphoinositide-Based Model Of Actin Waves In Frustrated Phagocytosis, Marco A. Avila Ponce De Leon

Biology and Medicine Through Mathematics Conference

No abstract provided.


Parameter Estimation For Tear Film Thinning, Rayanne Luke May 2020

Parameter Estimation For Tear Film Thinning, Rayanne Luke

Biology and Medicine Through Mathematics Conference

No abstract provided.


Geometry-Based Estimates Of Glutamate Transporter Density In Astrocytes, Anca R. Radulescu, Cassandra Williams, Annalisa Scimemi May 2020

Geometry-Based Estimates Of Glutamate Transporter Density In Astrocytes, Anca R. Radulescu, Cassandra Williams, Annalisa Scimemi

Biology and Medicine Through Mathematics Conference

No abstract provided.


Effects Of Local Mutations In Quadratic Iterations, Abraham Longbotham, Anca R. Radulescu May 2020

Effects Of Local Mutations In Quadratic Iterations, Abraham Longbotham, Anca R. Radulescu

Biology and Medicine Through Mathematics Conference

No abstract provided.


The Role Of Variation In Mate Choice And Wolbachia Infection On Aedes Aegypti Population Dynamics, Bernardo Ameneyro May 2020

The Role Of Variation In Mate Choice And Wolbachia Infection On Aedes Aegypti Population Dynamics, Bernardo Ameneyro

Biology and Medicine Through Mathematics Conference

No abstract provided.


Using Network Modeling To Understand The Relationship Between Sars-Cov-1 And Sars-Cov-2, Elizabeth Brooke Haywood, Nicole A. Bruce May 2020

Using Network Modeling To Understand The Relationship Between Sars-Cov-1 And Sars-Cov-2, Elizabeth Brooke Haywood, Nicole A. Bruce

Biology and Medicine Through Mathematics Conference

No abstract provided.


Exploring The Effect Of The Nestling Recruitment Curve On Enzootic West Nile Virus Transmission, Emily B. Horton May 2020

Exploring The Effect Of The Nestling Recruitment Curve On Enzootic West Nile Virus Transmission, Emily B. Horton

Biology and Medicine Through Mathematics Conference

No abstract provided.


Controlling The Morphology Of Copper-Silica Nanocomposites From Laser Ablation In Liquid, Mallory John, Katharine M. Tibbetts Jan 2020

Controlling The Morphology Of Copper-Silica Nanocomposites From Laser Ablation In Liquid, Mallory John, Katharine M. Tibbetts

Chemistry Publications

No abstract provided.


From Neutral Aniline To Aniline Trication: A Computational And Experimental Study, G. L. Gutsev, H. A. López Peña, S. L. Mcpherson, Derrick Ampadu Boateng, B. R. Ramachandran, L. G. Gutsev, Katharine M. Tibbetts Jan 2020

From Neutral Aniline To Aniline Trication: A Computational And Experimental Study, G. L. Gutsev, H. A. López Peña, S. L. Mcpherson, Derrick Ampadu Boateng, B. R. Ramachandran, L. G. Gutsev, Katharine M. Tibbetts

Chemistry Publications

We report density functional theory computations and photoionization mass spectrometry measurements of aniline and its positively charged ions. The geometrical structures and properties of the neutral, singly, doubly, and triply positively charged aniline are computed using density functional theory with the generalized gradient approximation. At each charge, there are multiple isomers closely spaced in total energy. Whereas the lowest energy states of both neutral and cation have the same topology C6H5–NH2, the dication and trication have the C5NH5–CH2 topology with the nitrogen atom in the meta and para positions, …


Dissociation Of Singly And Multiply Charged Nitromethane Cations: Femtosecond Laser Mass Spectrometry And Theoretical Modeling, G. L. Gutsev, S. L. Mcpherson, Hugo A. López Peña, Derrick Ampadu Boateng, L. G. Gutsev, B. R. Ramachandran, Katharine M. Tibbetts Jan 2020

Dissociation Of Singly And Multiply Charged Nitromethane Cations: Femtosecond Laser Mass Spectrometry And Theoretical Modeling, G. L. Gutsev, S. L. Mcpherson, Hugo A. López Peña, Derrick Ampadu Boateng, L. G. Gutsev, B. R. Ramachandran, Katharine M. Tibbetts

Chemistry Publications

Dissociation pathways of singly- and multiply charged gas-phase nitromethane cations were investigated with strong-field laser photoionization mass spectrometry and density functional theory computations. There are multiple isomers of the singly charged nitromethane radical cation, several of which can be accessed by rearrangement of the parent CH3–NO2 structure with low energy barriers. While direct cleavage of the C–N bond from the parent nitromethane cation produces NO2+ and CH3+, rearrangement prior to dissociation accounts for fragmentation products including NO+, CH2OH+, and CH2NO+. Extensive Coulomb explosion in fragment ions observed at high laser intensity indicates that rapid dissociation of multiply charged nitromethane cations …


Using A Faculty Learning Community To Promote Interdisciplinary Course Reform, Rhonda Bishop, Victor Piercey, Mischelle Stone Jan 2020

Using A Faculty Learning Community To Promote Interdisciplinary Course Reform, Rhonda Bishop, Victor Piercey, Mischelle Stone

Journal of Mathematics and Science: Collaborative Explorations

As part of a multi-institution, National Science Foundation (NSF) grant-funded project, Ferris State University (FSU) joins a national effort to reform mathematics curricula. Researchers from FSU developed and facilitated a faculty learning community (FLC) as one strategy to redesign the traditional approach to the quantitative reasoning skill development of students in the departments of mathematics, nursing, social work, and the College of Business. Over the course of one academic year, the FLC provided an interdisciplinary faculty connection to develop pedagogical approaches that integrated cross-curricular concepts and context from each discipline. The FLC not only produced uniquely designed, learning-centered approaches to …


Mechanism Of Nickel Phyllosilicate Formation By Laser Ablation In Liquid, Mallory G. John, Katharine M. Tibbetts Jan 2020

Mechanism Of Nickel Phyllosilicate Formation By Laser Ablation In Liquid, Mallory G. John, Katharine M. Tibbetts

Chemistry Publications

No abstract provided.


The Effect Of Time And Temperature On The Quality Of Latent Fingerprints On Incandescent Lightbulbs, Varying Donors Age And Sex, Kinaysha M. Collazo Maldonado Jan 2020

The Effect Of Time And Temperature On The Quality Of Latent Fingerprints On Incandescent Lightbulbs, Varying Donors Age And Sex, Kinaysha M. Collazo Maldonado

Theses and Dissertations

Fingerprints are used as a means of identification, but there are no established methodologies to determine time since deposition of latent fingerprints by visual means alone. This research considered the influence of age and sex on the quality of recovered latent prints from lit and unlit lightbulbs from 1 to 10 days, using accumulated degree hours (ADH) to account for both heat and time simultaneously. Two male and two female donors (one of each aged <40 and >40 years) were used. A thermal imaging camera was used to monitor the lightbulbs top and middle regions, which were significantly different (p≤0.05) for the …


Analyzing The Cognitive Demand Of Enacted Examples In Precalculus: A Comparative Case Study Of Graduate Student Instructors, Erica R. Miller Jan 2020

Analyzing The Cognitive Demand Of Enacted Examples In Precalculus: A Comparative Case Study Of Graduate Student Instructors, Erica R. Miller

Journal of Mathematics and Science: Collaborative Explorations

The cognitive demand of mathematical tasks is an important aspect of analyzing the impact of instruction on student learning. The purpose of this study was to examine the instructional examples enacted by graduate student precalculus instructors in order to answer the following questions: What is the cognitive demand of the enacted examples? What does a high cognitive demand example look like when an instructor uses direct instruction? And how are examples drawn from the written curriculum enacted in different ways? Using both random and purposeful sampling of precalculus lessons, I conducted classroom observations as well as pre- and post-observation interviews …


Promoting Partnership, Cultivating Colleagueship: The Summit-P Project At Norfolk State University, Maila Brucal-Hallare, Shahrooz Moosavizadeh, Makarand Deo Jan 2020

Promoting Partnership, Cultivating Colleagueship: The Summit-P Project At Norfolk State University, Maila Brucal-Hallare, Shahrooz Moosavizadeh, Makarand Deo

Journal of Mathematics and Science: Collaborative Explorations

Norfolk State University (NSU) is the only public Historically Black College and University (HBCU) member institution in SUMMIT-P. At NSU, a strong collaboration between the Department of Mathematics and its partner discipline, the Department of Engineering, has been established for the Calculus I and Differential Equations classes as part of the SUMMIT-P project. In this paper, we record a brief history of this collaboration project at NSU, the various structures within the SUMMIT-P Project, the site visit that occurred in Spring 2019, and how recent activities helped guide the direction of the project at NSU.


Paradigms For Creating Activities That Integrate Mathematics And Science Topics, Janet Bowers, Kathy Williams, Antoni Luque, Devon Quick, Mary Beisiegel, Jody Sorensen, Joan Kunz, Diane Smith, Lori Kayes Jan 2020

Paradigms For Creating Activities That Integrate Mathematics And Science Topics, Janet Bowers, Kathy Williams, Antoni Luque, Devon Quick, Mary Beisiegel, Jody Sorensen, Joan Kunz, Diane Smith, Lori Kayes

Journal of Mathematics and Science: Collaborative Explorations

Research has shown that undergraduate students benefit from seeing examples of mathematics applied to real-world situations. This article describes three different paradigms for how math and discipline partner faculty worked together to create mathematical activities that illustrate applications of the topics being studied in precalculus and calculus. All three examples are discussed within the framework of PDSA cycles to describe the process by which the teams collaborated to plan, enact, study, and refine their lessons. Findings discuss both the difficulties of creating integrated activities (differences in terms and definitions between math and science faculty, different foregrounding of math versus science …


Designing A Student Exchange Program: Facilitating Interdisciplinary, Mathematics-Focused Collaboration Among College Students, Bryan D. Poole, Linden Turner, Caroline Maher-Boulis Jan 2020

Designing A Student Exchange Program: Facilitating Interdisciplinary, Mathematics-Focused Collaboration Among College Students, Bryan D. Poole, Linden Turner, Caroline Maher-Boulis

Journal of Mathematics and Science: Collaborative Explorations

Interdisciplinary collaboration is necessary for students’ professional preparation (Laird et al., 2014; Repko, 2014) and may promote effective learning transfer of course content. Such collaborations have resulted in enhanced problem-solving skills and conceptual understanding of statistics content (Dierker et al., 2012; Everett, 2016; Hammersley et al., 2019; Woodzicka et al., 2015). As a result of ongoing collaborations between faculty members in different disciplines and at different universities, we created a “Student Exchange Program” to encourage interdisciplinary collaboration between undergraduate students in mathematics and social sciences. In the current paper, we describe past research that informed the design of this program, …


From Creative Idea To Implementation: Borrowing Practices And Problems From Social Science Disciplines, Anil Venkatesh, Erin Militzer Jan 2020

From Creative Idea To Implementation: Borrowing Practices And Problems From Social Science Disciplines, Anil Venkatesh, Erin Militzer

Journal of Mathematics and Science: Collaborative Explorations

By collaborating with partner disciplines, mathematics educators gain valuable insight into the perspectives and needs of their students. This insight can lead to improved coordination of content and methods between courses in mathematics and the partner disciplines. This curricular coordination not only invites students to apply their mathematical knowledge in their own professional contexts, but also allows students to communicate mathematical mastery in the language of their intended professions. In this paper, we discuss the challenges specific to developing a mathematics course in collaboration with partner disciplines, with particular attention to portability to a wide range of math instructors. We …


Using Site Visits To Strengthen Collaboration, Victor Piercey, Rebecca Segal, Afroditi Filippas, Tao Chen, Soloman Kone, Rosalyn Hargraves, Jack Bookman, John Hearn, Debbie Pike, Kathy Williams Phd Jan 2020

Using Site Visits To Strengthen Collaboration, Victor Piercey, Rebecca Segal, Afroditi Filippas, Tao Chen, Soloman Kone, Rosalyn Hargraves, Jack Bookman, John Hearn, Debbie Pike, Kathy Williams Phd

Journal of Mathematics and Science: Collaborative Explorations

The SUMMIT-P project is a multi-institutional endeavor to leverage interdisciplinary collaboration in order to improve the teaching of undergraduate mathematics courses in the first two years of college. One goal of this work is to establish collaborative communities among the institutions involved. As part of the project, institutions visit one another on site visits that are structured according to a common protocol. The site visits have been valuable to the project. Participating institutions report the exchange of actionable ideas and feedback; members of the grant leadership team have used the site visits to direct the overall project, and evaluators have …