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Articles 31  60 of 209463
FullText Articles in Physical Sciences and Mathematics
Get The News Out Loudly And Quickly: Modeling The Influence Of The Media On Limiting Infectious Disease, Anna Mummert, Howard Weiss
Get The News Out Loudly And Quickly: Modeling The Influence Of The Media On Limiting Infectious Disease, Anna Mummert, Howard Weiss
Mathematics Faculty Research
During outbreaks of infectious diseases with high morbidity and mortality, individuals closely follow media reports of the outbreak. Many will attempt to minimize contacts with other individuals in order to protect themselves from infection and possibly death. This process is called social distancing. Social distancing strategies include restricting socializing and travel, and using barrier protections. We use modeling to show that for shortterm outbreaks, social distancing can have a large influence on reducing outbreak morbidity and mortality. In particular, public health agencies working together with the media can significantly reduce the severity of an outbreak by providing timely accounts of ...
Some Examples Of The Liouville Integrability Of The Banded Toda Flows, Zachary Youmans
Some Examples Of The Liouville Integrability Of The Banded Toda Flows, Zachary Youmans
All Graduate Theses and Dissertations
The Toda lattice is a famous integrable system studied by Toda in the 1960s. One can study the Toda lattice using a matrix representation of the system. Previous results have shown that this matrix of dimension n with 1 band and n−1 bands is Liouville integrable. In this paper, we lay the foundation for proving the general case of the Toda lattice, where we consider the matrix representation with dimension n and a partially filled lower triangular part. We call this the banded Toda flow. The main theorem is that the banded Toda flow up to dimension 10 is ...
Boron In The Pariette Wetlands, Uinta Basin, Ut, Palak Vasudeva
Boron In The Pariette Wetlands, Uinta Basin, Ut, Palak Vasudeva
All Graduate Theses and Dissertations
Boron is a naturally occurring mineral in shale and coal beds formed in marine environments, as found in the Uinta Basin. Mining activity and the application of excess irrigation water on agricultural lands in the Pariette watershed lead to mobilization of B via surface run off. Water quality monitoring records from 2006 2009 reported violations of Utah B standard for irrigation water 43100% of the time, for water flowing through the Pariette Wetlands. This study aims to determine B distribution in abiotic (water, sediments) and biotic samples (macroinvertebrates, aquatic vegetation, fish, bird eggs), and to establish correlations between B concentrations ...
Numerical Approximations Of Phase Field Equations With Physics Informed Neural Networks, Colby Wight
Numerical Approximations Of Phase Field Equations With Physics Informed Neural Networks, Colby Wight
All Graduate Plan B and other Reports
Designing numerical algorithms for solving partial differential equations (PDEs) is one of the major research branches in applied and computational mathematics. Recently there has been some seminal work on solving PDEs using the deep neural networks. In particular, the Physics Informed Neural Network (PINN) has been shown to be effective in solving some classical partial differential equations. However, we find that this method is not sufficient in solving all types of equations and falls short in solving phasefield equations. In this thesis, we propose various techniques that add to the power of these networks. Mainly, we propose to embrace the ...
Effect Of Plant Derived Tannins On Nitrogen And Carbon Cycling In Pasture Soils, Kathryn A. Slebodnik
Effect Of Plant Derived Tannins On Nitrogen And Carbon Cycling In Pasture Soils, Kathryn A. Slebodnik
All Graduate Theses and Dissertations
Pasturefinished beef has become increasingly popular, but nitrogen losses from these pastures are of concern. Legumes containing condensed tannins such as birdsfoot trefoil (Lotus corniculatus) and sainfoin (Onobrychis viciifolia) may serve as environmentally and economically viable alternative forages in pasture finishing systems while reducing soil nitrogen loss. The goal of this project was to understand how tannin type and concentration affects soil nitrogen cycling both in the lab and the field. This thesis: 1) compared the physical, chemical, and biological characteristics of soil samples obtained from grazed grass and tannin and nontannin containing legume pastures, 2) assessed how feces from ...
Soil Health Assessment On Arid Rangeland Soils Impacted By Oil And Gas Exploration, Development, And Extraction, Justin Allred
Soil Health Assessment On Arid Rangeland Soils Impacted By Oil And Gas Exploration, Development, And Extraction, Justin Allred
All Graduate Theses and Dissertations
Oil and gas well pad reclamation in arid environments such as in the Uinta Basin of Utah, presents unique challenges, including remote locations, limited water, and elevated soil salinity and sodicity. Successfully reclaimed Plugged and Abandoned (P&A) well pads should resemble the surrounding rangeland once fully reclaimed. Revegetation of native species is the primary indicator of successful reclamation, but the lack of water makes it challenging to reseed native plants, while trying to prevent the encroachment of invasive plant species such as Bromus tectorum (cheatgrass), Salsola tragus (Russian thistle), and Halogeton glomeratus (halogeton). Could successful reclamation be reflective of ...
Bonnet Carré Spillway Freshwater Transport And Corresponding Biochemical Properties In The Mississippi Bight, Sabrina M. Parra, Virginie Sanial, Adam D. Boyette, M. Kemal Cambazoglu, Inia M. Soto, Adam T. Greer, Luciano M. Chiaverano, Angie Hoover, Michael S. Dinniman
Bonnet Carré Spillway Freshwater Transport And Corresponding Biochemical Properties In The Mississippi Bight, Sabrina M. Parra, Virginie Sanial, Adam D. Boyette, M. Kemal Cambazoglu, Inia M. Soto, Adam T. Greer, Luciano M. Chiaverano, Angie Hoover, Michael S. Dinniman
CCPO Publications
Large freshwater pulses to coastal ecosystems change local hydrologic regimes and alter biogeochemical processes. The Mississippi Bight coastal ecosystem, located in the northern Gulf of Mexico shelf, is influenced by extensive freshwater inputs: the Mississippi River (MSR) and several smaller rivers to the east. Under river flood conditions, MSR waters flow through the Bonnet Carré Spillway (BCS) to relieve pressure on levees in New Orleans, Louisiana. In 2015, mild wintertime temperatures and heavy rainfall throughout the MSR watershed led to extreme flooding and prompted an unusually early BCS opening on January 10, 2016 for 23 days. This study examines the ...
Children In 2077: Designing Children’S Technologies In The Age Of Transhumanism, Oğuz Oz Buruk, Oğuzhan Özcan, Gökçe Elif Baykal, Tilbe Göksun, Selçuk Acar, Güler Akduman, Mehmet Aydın Baytaş, Ceylan Beşevli, Joe Best, Aykut Coşkun, Hüseyin Uğur Genç, Baki Kocaballi, Samuli Laato, Cássia Mota, Konstantinos Papangelis, Marigo Raftopoulos, Richard Ramchurn, Juan Sádaba, Mattia Thibault, Annika Wolff, Mert Yıldız
Children In 2077: Designing Children’S Technologies In The Age Of Transhumanism, Oğuz Oz Buruk, Oğuzhan Özcan, Gökçe Elif Baykal, Tilbe Göksun, Selçuk Acar, Güler Akduman, Mehmet Aydın Baytaş, Ceylan Beşevli, Joe Best, Aykut Coşkun, Hüseyin Uğur Genç, Baki Kocaballi, Samuli Laato, Cássia Mota, Konstantinos Papangelis, Marigo Raftopoulos, Richard Ramchurn, Juan Sádaba, Mattia Thibault, Annika Wolff, Mert Yıldız
Presentations and other scholarship
What for and how will we design children’s technologies in the transhumanism age, and what stance will we take as designers? This paper aims to answer this question with 13 fictional abstracts from sixteen authors of different countries, institutions and disciplines. Transhumanist thinking envisions enhancing human body and mind by blending human biology with technological augmentations. Fundamentally, it seeks to improve the human species, yet the impacts of such movement are unknown and the implications on children’s lives and technologies were not explored deeply. In an age, where technologies can clearly be defined as transhumanist, such as underskin ...
"A Comparison Of Variable Selection Methods Using Bootstrap Samples From Environmental Metal Mixture Data", PaulYvann Djamen 4785403, PaulYvann Djamen
"A Comparison Of Variable Selection Methods Using Bootstrap Samples From Environmental Metal Mixture Data", PaulYvann Djamen 4785403, PaulYvann Djamen
Mathematics & Statistics ETDs
In this thesis, I studied a newly developed variable selection method SODA, and three customarily used variable selection methods: LASSO, Elastic net, and Random forest for environmental mixture data. The motivating datasets have neurodevelopmental status as responses and metal measurements and demographic variables as covariates. The challenges for variable selections include (1) many measured metal concentrations are highly correlated, (2) there are many possible ways of modeling interactions among the metals, (3) the relationships between the outcomes and explanatory variables are possibly nonlinear, (4) the signal to noise ratio in the real data may be low. To compare these methods ...
A RealTime Feature Indexing System On Live Video Streams, Aditya Chakraborty, Akshay Pawar, Hojoung Jang, Shunqiao Huang, Sripath Mishra, ShuoHan Chen, YuanHao Chang, George K. Thiruvathukal, YungHsiang Lu
A RealTime Feature Indexing System On Live Video Streams, Aditya Chakraborty, Akshay Pawar, Hojoung Jang, Shunqiao Huang, Sripath Mishra, ShuoHan Chen, YuanHao Chang, George K. Thiruvathukal, YungHsiang Lu
Computer Science: Faculty Publications and Other Works
Most of the existing video storage systems rely on offline processing to support the featurebased indexing on video streams. The featurebased indexing technique provides an effec tive way for users to search video content through visual features, such as object categories (e.g., cars and persons). However, due to the reliance on offline processing, video streams along with their captured features cannot be searchable immediately after video streams are recorded. According to our investigation, buffering and storing live video steams are more timeconsuming than the YOLO v3 object detector. Such observation motivates us to propose a realtime feature indexing (RTFI ...
Synthesis And Fabrication Of SelfSustainable Triboelectric, Abu Masa Abdullah, Alejandro Flores, Aminur Rashid Chowdhury, Jianzhi Li, Yuanbing Mao, Jasim Uddin
Synthesis And Fabrication Of SelfSustainable Triboelectric, Abu Masa Abdullah, Alejandro Flores, Aminur Rashid Chowdhury, Jianzhi Li, Yuanbing Mao, Jasim Uddin
Chemistry Faculty Publications and Presentations
In recent times, Triboelectric Nanogenerators (TENG) have attained the focus of the scientific community due to its potential as a medium to harvest mechanical energy from the ambient environment. Human motion has been attributed as a source of mechanical energy to drive electronic devices and sensors through TENG. Based on the principles of single electrode TENG, we have developed a Triboelectricity based Stepping and Tapping Energy Case (TESTEC) which magnifies the prospect to power touch electronic devices by utilizing finger tapping and stepping motion. This novel case was constructed with two single electrode TENG operating through the triboelectric mechanism between ...
LowTemperature Pyrolysis Of Municipal Solid Waste Components And RefuseDerived Fuel—Process Efficiency And Fuel Properties Of Carbonized Solid Fuel, Kacper Swiechowski, Ewa Syguła, Jacek A. Koziel, Paweł Stepien, Szymon Kugler, Piotr Manczarski, Andrzej Białowiec
LowTemperature Pyrolysis Of Municipal Solid Waste Components And RefuseDerived Fuel—Process Efficiency And Fuel Properties Of Carbonized Solid Fuel, Kacper Swiechowski, Ewa Syguła, Jacek A. Koziel, Paweł Stepien, Szymon Kugler, Piotr Manczarski, Andrzej Białowiec
Agricultural and Biosystems Engineering Publications
New technologies to valorize refusederived fuels (RDFs) will be required in the near future due to emerging trends of (1) the cement industry’s demands for highquality alternative fuels and (2) the decreasing calorific value of the fuels derived from municipal solid waste (MSW) and currently used in cement/incineration plants. Lowtemperature pyrolysis can increase the calorific value of processed material, leading to the production of valueadded carbonized solid fuel (CSF). This dataset summarizes the key properties of MSWderived CSF. Pyrolysis experiments were completed using eight types of organic waste and their two RDF mixtures. Organic waste represented common morphological ...
Singapore's Climate Action: It Is Time To Be More Ambitious, Winston T. L. Chow
Singapore's Climate Action: It Is Time To Be More Ambitious, Winston T. L. Chow
Research Collection School of Social Sciences
Some nations have declared netzero carbon emission targets by 2050. Businesses and the people here know Singapore can punch above its weight. The government should lend its support.
Does Updating Natural Hazard Maps To Reflect Best Practices Increase Viewer Comprehension Of Risk?, Carson C. MacphersonKrutsky, Brittany D. Brand, Michael K. Lindell
Does Updating Natural Hazard Maps To Reflect Best Practices Increase Viewer Comprehension Of Risk?, Carson C. MacphersonKrutsky, Brittany D. Brand, Michael K. Lindell
Geosciences Faculty Publications and Presentations
In this study, we examine whether updating an interactive hazard map using recommendations from the literature improves user map comprehension. Analyses of experimental data collected from 75 university students revealed that map comprehension scores were not significantly better for those who viewed a “best practices” map compared to those who viewed an existing version. This may be because the existing map was itself better than most other interactive maps. Additionally, we found map comprehension levels to have significant positive relationships with objective tests, but not selfreported measures of spatial ability. Moreover, selfreported spatial ability had statistically significant, but only moderately ...
BubbleIn Digital Testing System, Chaz Hampton
BubbleIn Digital Testing System, Chaz Hampton
Electronic Theses, Projects, and Dissertations
BubbleIn is a cloudbased testtaking system build for students and teachers. The BubbleIn system is a testtaking application that interfaces with a cloud server. The mobile applications have been built for Android and Apple devices and the webserver is hosted on Digital Ocean VPS run with Nginx. The BubbleIn application is equipped with anticheating mechanisms such as questionanswer key scrambling, not allowing screenshots, screen recording, or leaving the application. The tests students take are sent to the webserver to be graded and have statistics calculated and displayed in easy to use format for the test creator. Instructors can use the ...
New Approaches To Frequent And Incremental Frequent Pattern Mining, Mehmet Bicer
New Approaches To Frequent And Incremental Frequent Pattern Mining, Mehmet Bicer
All Dissertations, Theses, and Capstone Projects
Data Mining (DM) is a process for extracting interesting patterns from large volumes of data. It is one of the crucial steps in Knowledge Discovery in Databases (KDD). It involves various data mining methods that mainly fall into predictive and descriptive models. Descriptive models look for patterns, rules, relationships and associations within data. One of the descriptive methods is association rule analysis, which represents cooccurrence of items or events. Association rules are commonly used in market basket analysis. An association rule is in the form of X → Y and it shows that X and Y cooccur with a given level ...
At The Interface Of Algebra And Statistics, TaiDanae Bradley
At The Interface Of Algebra And Statistics, TaiDanae Bradley
All Dissertations, Theses, and Capstone Projects
This thesis takes inspiration from quantum physics to investigate mathematical structure that lies at the interface of algebra and statistics. The starting point is a passage from classical probability theory to quantum probability theory. The quantum version of a probability distribution is a density operator, the quantum version of marginalizing is an operation called the partial trace, and the quantum version of a marginal probability distribution is a reduced density operator. Every joint probability distribution on a finite set can be modeled as a rank one density operator. By applying the partial trace, we obtain reduced density operators whose diagonals ...
A Comparison Of Tribal Sovereignty, SelfDetermination, And Environmental Justice At The Epa’S Onondaga Lake And Tar Creek Superfund Sites, Thomas Clark
All Dissertations, Theses, and Capstone Projects
The Environmental Protection Agency’s Superfund program mandates that Native American tribes are afforded the same treatment as states in the implementation of environmental remediation projects; however, the degree of coordination and consultation between the EPA and sovereign tribal governments varies widely between sites. Two of the Superfund program’s highest profile sites with Native American interest, northeast Oklahoma’s Tar Creek and central New York’s Onondaga Lake, are characterized by such a disparity in tribal participation. While Oklahoma’s Quapaw Tribe would ultimately enter into a number of cooperative agreements with the EPA for direct control over remedial ...
Convexity And Curvature In Hierarchically Hyperbolic Spaces, Jacob RussellMadonia
Convexity And Curvature In Hierarchically Hyperbolic Spaces, Jacob RussellMadonia
All Dissertations, Theses, and Capstone Projects
Introduced by Behrstock, Hagen, and Sisto, hierarchically hyperbolic spaces axiomatized Masur and Minsky's powerful hierarchy machinery for the mapping class groups. The class of hierarchically hyperbolic spaces encompasses a number of important and seemingly distinct examples in geometric group theory including the mapping class group and Teichmueller space of a surface, virtually compact special groups, and the fundamental groups of 3manifolds without Nil or Sol components. This generalization allows the geometry of all of these important examples to be studied simultaneously as well as providing a bridge for techniques from one area to be applied to another.
This thesis ...
Averages And Nonvanishing Of Central Values Of Triple Product LFunctions Via The Relative Trace Formula, Bin Guan
All Dissertations, Theses, and Capstone Projects
Harris and Kudla (2004) proved a conjecture of Jacquet, that the central value of a triple product Lfunction does not vanish if and only if there exists a quaternion algebra over which a period integral of three corresponding automorphic forms does not vanish. Moreover, Gross and Kudla (1992) established an explicit identity relating central Lvalues and period integrals (which are finite sums in their case), when the cusp forms are of prime levels and weight 2. Böcherer, SchulzePillot (1996) and Watson (2002) generalized this identity to more general levels and weights, and Ichino (2008) proved an adelic period formula which ...
Symmetric Rigidity For Circle Endomorphisms With Bounded Geometry And Their Dual Maps, John Adamski
Symmetric Rigidity For Circle Endomorphisms With Bounded Geometry And Their Dual Maps, John Adamski
All Dissertations, Theses, and Capstone Projects
Let $f$ be a circle endomorphism of degree $d\geq2$ that generates a sequence of Markov partitions that either has bounded nearby geometry and bounded geometry, or else just has bounded geometry, with respect to normalized Lebesgue measure. We define the dual symbolic space $\S^*$ and the dual circle endomorphism $f^*=\tilde{h}\circ f\circ{h}^{1}$, which is topologically conjugate to $f$. We describe some properties of the topological conjugacy $\tilde{h}$. We also describe an algorithm for generating arbitrary circle endomorphisms $f$ with bounded geometry that preserve Lebesgue measure and their corresponding dual circle endomorphisms $f^*$ as ...
Generalized FourDimensional Effective Hadronic Supersymmetry Based On Quantum Chromodynamics (Qcd), Enxi Yu
Generalized FourDimensional Effective Hadronic Supersymmetry Based On Quantum Chromodynamics (Qcd), Enxi Yu
All Dissertations, Theses, and Capstone Projects
New discovery in multiple laboratories around the globe has shown a supersymmetry between hadrons—baryons and mesons. In order to generalize the phenomenological hadronic supersymmetry, the spinflavor SU(6) symmetry need an extension. This thesis present how we can extend SU(6) symmetry so that hadronic supersymmetry can be included. In the future, this extension can be also applied to pentaquark and tetraquark bags, for which there is an ongoing research in laboratories.
Proton Pumping Mechanism In Cytochrome C Oxidase, Xiuhong Cai
Proton Pumping Mechanism In Cytochrome C Oxidase, Xiuhong Cai
All Dissertations, Theses, and Capstone Projects
Cytochrome c Oxidase (CcO), is the terminal electron acceptor in the membrane bound aerobic respiratory chain. It reduces O_{2} to water. The energy released by this reaction is stored by pumping protons from the high pH, Nside of the membrane to the low pH, Pside. The generated proton gradient provides the motive force for synthesis of ATP by the ATP synthase.
Building a proton gradient across the membrane requires that proton transport must occur along controllable proton pathways to prevent proton leakage to the Nside. It has been suggested that CcO function requires proton transfer channels in both the ...
SmallX Qcd Calculations With A Biased Ensemble, Gary Kapilevich
SmallX Qcd Calculations With A Biased Ensemble, Gary Kapilevich
All Dissertations, Theses, and Capstone Projects
In this dissertation, I will argue that we can study functional fluctuations in unintegrated gluon distributions, in the MV model as well as JIMWLK, using reweighting techniques, which will allow me to calculate QCD observables with "biased ensembles". This technique will enable me to study rare functional configurations of the gluon distributions, that might have been selected for in, for example, the centrality criteria used by the ATLAS and ALICE collaborations. After a review of these techniques, as well as a review of QCD physics at high energy in general, I will use biased ensembles to compute observables in two ...
Generating Entanglement With The Dynamical Lamb Effect, Mirko Amico
Generating Entanglement With The Dynamical Lamb Effect, Mirko Amico
All Dissertations, Theses, and Capstone Projects
According to quantum field theory, the vacuum is filled with virtual particles which can be turned into real ones under the influence of external perturbations. Phenomena of this kind are commonly referred to as quantum vacuum phenomena. Several quantum vacuum phenomena related to the peculiar nature of the quantum vacuum have been predicted, some of which, such as the Lamb shift and the Casimir effect, have been experimentally found. Other examples of quantum vacuum phenomena include the Unruh effect, the dynamical Casimir effect and the dynamical Lamb effect. The dynamical Lamb effect was first predicted by considering the situation of ...
Translation Distance And Fibered 3Manifolds, Alexander J. Stas
Translation Distance And Fibered 3Manifolds, Alexander J. Stas
All Dissertations, Theses, and Capstone Projects
A 3manifold is said to be fibered if it is homeomorphic to a surface bundle over the circle. For a cusped, hyperbolic, fibered 3manifold M, we study an invariant of the mapping class of a surface homeomorphism called the translation distance in the arc complex and its relation with essential surfaces in M. We prove that the translation distance of the monodromy of M can be bounded above by the Euler characteristic of an essential surface. For onecusped, hyperbolic, fibered 3manifolds, the monodromy can also be bounded above by a linear function of the genus of an essential surface.
We ...
Quadratic Packing Polynomials On Sectors Of R^{2}, Kaare S. Gjaldbaek
Quadratic Packing Polynomials On Sectors Of R2, Kaare S. Gjaldbaek
All Dissertations, Theses, and Capstone Projects
A result by FueterPólya states that the only quadratic polynomials that bijectively map the integral lattice points of the first quadrant onto the nonnegative integers are the two Cantor polynomials. We study the more general case of bijective mappings of quadratic polynomials from the lattice points of sectors defined as the convex hull of two rays emanating from the origin, one of which falls along the xaxis, the other being defined by some vector. The sector is considered rational or irrational according to whether this vector can be written with rational coordinates or not. We show that the existence of ...
Model Theory Of Groups And Monoids, Laura M. Lopez Cruz
Model Theory Of Groups And Monoids, Laura M. Lopez Cruz
All Dissertations, Theses, and Capstone Projects
We first show that arithmetic is biinterpretable (with parameters) with the free monoid and with partially commutative monoids with trivial center. This biinterpretability implies that these monoids have the QFA property and that finitely generated submonoids of these monoids are definable. Moreover, we show that any recursively enumerable language in a finite alphabet X with two or more generators is definable in the free monoid. We also show that for metabelian BaumslagSolitar groups and for a family of metabelian restricted wreath products, the Diophantine Problem is decidable. That is, we provide an algorithm that decides whether or not a given ...
Integrated Multiple Mediation Analysis: A Robustness–Specificity TradeOff In Causal Structure, AnShun Tai, ShengHsuan Lin
Integrated Multiple Mediation Analysis: A Robustness–Specificity TradeOff In Causal Structure, AnShun Tai, ShengHsuan Lin
Harvard University Biostatistics Working Paper Series
Recent methodological developments in causal mediation analysis have addressed several issues regarding multiple mediators. However, these developed methods differ in their definitions of causal parameters, assumptions for identification, and interpretations of causal effects, making it unclear which method ought to be selected when investigating a given causal effect. Thus, in this study, we construct an integrated framework, which unifies all existing methodologies, as a standard for mediation analysis with multiple mediators. To clarify the relationship between existing methods, we propose four strategies for effect decomposition: twoway, partially forward, partially backward, and complete decompositions. This study reveals how the direct and ...
Modeling The Growth Of Alfalfa (Medicago Sativa) In The Pampas Region, M. Druille, M. F. Garbulsky, V. A. Deregibus
Modeling The Growth Of Alfalfa (Medicago Sativa) In The Pampas Region, M. Druille, M. F. Garbulsky, V. A. Deregibus
International Grassland Congress Proceedings
No abstract provided.