Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics Commons™

Open Access. Powered by Scholars. Published by Universities.®

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 74941 - 74970 of 297090

Full-Text Articles in Physical Sciences and Mathematics

The Influence Network In 1+1 Dimensions, James Lyons Walsh Jan 2020

The Influence Network In 1+1 Dimensions, James Lyons Walsh

Legacy Theses & Dissertations (2009 - 2024)

The Influence Network research program [1] [2] [3] [4] starts with a very simple model

Go to article

The Significance Of The Nontraditional Coriolis Terms In Tropical Large-Scale Dynamics, Heng Wang Jan 2020

The Significance Of The Nontraditional Coriolis Terms In Tropical Large-Scale Dynamics, Heng Wang

Legacy Theses & Dissertations (2009 - 2024)

The nontraditional Coriolis terms (NCTs) turn eastward motion upward and upward motion westward, and vice versa. NCTs are omitted in most of the current global atmospheric models. However, NCTs are significant in tropical large-scale dynamics in at least three aspects. 1) Using an idealized model that can switch NCTs on or off, omitting NCTs biases large-scale flow response to prescribed diabatic forcing mimicking the intertropical convergence zone (ITCZ). The omission yields a westerly wind bias in the heating region ~ 10% of the westerly jet stream. This bias is due to lack of westward NCT when heating-induced upward motion is …

Go to article

Permutation Orbifolds Of Fermionic Vertex Algebras, Joshua Andrew Wauchope Jan 2020

Permutation Orbifolds Of Fermionic Vertex Algebras, Joshua Andrew Wauchope

Legacy Theses & Dissertations (2009 - 2024)

We investigate the structure of the permuation orbifolds for the rank three free fermion vertex superalgebra $\mathcal{F}(3)$ (of central charge $\frac{3}{2}$) and the rank three symplectic fermion vertex superalgebra $\mathcal{SF}(3)$ (of central charge -6). We give minimal strong generating sets for the orbifolds $\mathcal{F}(3)^{S_3}$, $\mathcal{F}(3)^{\mathbb{Z}_3}$, $\mathcal{SF}(3)^{S_3}$ and $\mathcal{SF}(3)^{\mathbb{Z}_3}$. In particular, we show the orbifold $\mathcal{F}(3)^{S_3}$ is isomorphic to $\mathcal{F}(1) \otimes W$, where $W$ is $W$-superalgebra of type $(2,4,\frac{9}{2})$. Additionally, we give a bosonic description of the orbifold $\mathcal{F}(3)^{S_3}$. We find analogous isomorphisms for the orbifolds $\mathcal{F}(3)^{\mathbb{Z}_3}$, $\mathcal{SF}(3)^{S_3}$ and $\mathcal{SF}(3)^{\mathbb{Z}_3}$, where the $W$-algebras are type $(1,\frac{9}{2}, \frac{9}{2})$, $(2,3^3,4^3,5^5,6^4)$ and $(2^4,3^4,4^4,5^4)$, respectively. …

Go to article

Increasing Performance Of Classifiers For Ssvep-Based Brain-Computer Interfaces Using Extension Methods, Ethan Douglas Webster Jan 2020

Increasing Performance Of Classifiers For Ssvep-Based Brain-Computer Interfaces Using Extension Methods, Ethan Douglas Webster

Legacy Theses & Dissertations (2009 - 2024)

Brain-computer interfaces (BCI) provide an alternative communication method that does not require standard physical mediums (speech, typing, etc.). These systems have been implemented to provide additional communication and control options for people with certain motor disabilities. Classification is an important part of BCI systems and consists of inferring user commands from brain activity. Supervised classification methods often achieve higher accuracy, but unsupervised classification methods are useful when training is not practical for the user. This thesis focuses on unsupervised classification algorithms used for a BCI speller application and presents extensions for two existing classifiers that improve classification accuracy and thus …

Go to article

Towards Practical Modulation Recognition For Future Spectrum-Sharing Applications, Wei Xiong Jan 2020

Towards Practical Modulation Recognition For Future Spectrum-Sharing Applications, Wei Xiong

Legacy Theses & Dissertations (2009 - 2024)

With recent advances in emerging Dynamic Spectrum Access (DSA) and Cognitive Radio technologies, modulation recognition (ModRec) has emerged as a critical problem with importance to spectrum-sharing applications. Existing approaches, target modulation recognition as if a packet will be decoded in full and thus, pose stringent requirements on spectrum sensing and transmitter behavior: (i) a transmitter's bandwidth should be scanned alone and in full, (ii) for MIMO ModRec, the sensor should have at least same as many antennas as the transmitter, (iii) modulation symbol representation should be uniform and (iv) prior knowledge of the transmitter's technology should be available. These stringent …

Go to article

Sequentially-Closed And Forward-Closed String Rewriting Systems, Yu Zhang Jan 2020

Sequentially-Closed And Forward-Closed String Rewriting Systems, Yu Zhang

Legacy Theses & Dissertations (2009 - 2024)

In this dissertation we introduce the new concept of sequentially-closed string rewriting systems which generalizes forward-closed string rewriting systems and monadic string rewriting systems. We also investigate subclasses and properties of finite and regular sequentially-closed systems and forward-closed systems.

Go to article

Stepwise Reduction Of Non-Planar Molecular Nanocarbons : From Functionalized Bowls To Helicenes And Nanohoops, Zheng Zhou Jan 2020

Stepwise Reduction Of Non-Planar Molecular Nanocarbons : From Functionalized Bowls To Helicenes And Nanohoops, Zheng Zhou

Legacy Theses & Dissertations (2009 - 2024)

Molecular nanocarbons, which can be considered as fragments of fullerenes, carbon nanotubes, or graphene, have stimulated the rapid development of carbon chemistry at the molecular level in recent decades. Molecular nanocarbons possess not only outstanding chemical and physical properties stemming from their parent carbon allotropes, but also present such unique features as controllable and scalable synthetic conditions, defined molecular compositions, uniform size, and relatively good solubility. These advances of molecular nanocarbons over conventional carbonaceous materials give rise to the development of such applications as electron transfer, energy transport and storage. However, future progress of these technologically-important fields requires a superior …

Go to article

Preparation And Characterization Of Light Sensitive Tetrafluoro-Lambda6-Sulfanyl-Containing Polymers, Kelly A. Bonetti Jan 2020

Preparation And Characterization Of Light Sensitive Tetrafluoro-Lambda6-Sulfanyl-Containing Polymers, Kelly A. Bonetti

Legacy Theses & Dissertations (2009 - 2024)

The addition of the pentafluorosulfanyl (SF5) group to an unsaturated organic starting material became popular in the 1960s, following the widening commercial availability of SF5Cl and SF5Br. However, the free radical reaction conditions required limited a broader appreciation of this critical advance. Moreover, while important thermal, photochemical and free-radical initiated addition reactions were reported, the unique photosensitivity of these compounds was not well understood. In 2012, a scalable synthetic route was developed affording aryl-SF5-containing derivatives via a novel aryl-SF4Cl intermediate. As a result, a heightened interest in hypervalent fluorinated sulfur containing materials was renewed. In 2014, the visible light addition …

Go to article

Uncertainty Learning In Subjective Logic And Pattern Discovery In Network Data, Adilijiang Alimu Jan 2020

Uncertainty Learning In Subjective Logic And Pattern Discovery In Network Data, Adilijiang Alimu

Legacy Theses & Dissertations (2009 - 2024)

Uncertainty caused by unreliable or insufficient data and vulnerable machine learning models

Go to article

Numerical Study Of Klebanov-Tarnopolsky Models, Nathaniel Avish Jan 2020

Numerical Study Of Klebanov-Tarnopolsky Models, Nathaniel Avish

Legacy Theses & Dissertations (2009 - 2024)

In this thesis we perform a numerical study of the $O(N_1)\times O(N_2)\times O(N_3)$ Klebanov-Tarnopolsky (KT) model, whose large-$N$ limit is expected to admit a simple gravitational dual under the AdS/CFT correspondence. We study the $25$ special cases of the KT model which have fewer than $2^{13}$ states. For all such systems we diagonalize the Hamiltonian matrices, identify sectors which have specific charges, and compute the number of singlet states. Our findings support prior evidence that the KT model can be exactly diagonalized and therefore may have an exact analytic solution, which would be helpful in learning more about the AdS/CFT …

Go to article

Nmr Based Studies Of Interactions Between Ribosomes And Glycolytic Enzymes, Devin Bryan Busch Jan 2020

Nmr Based Studies Of Interactions Between Ribosomes And Glycolytic Enzymes, Devin Bryan Busch

Legacy Theses & Dissertations (2009 - 2024)

Recent research has been performed to better understand what implications ribosome-mediated quinary interactions have on cellular growth. These studies demonstrated that ribosomal binding to enzymes, and their cofactors, can cause significant changes in their enzymatic activity leading to a proposal that ribosome surfaces play a greater regulatory in cellular growth than thought of in the past. To widen the scope of investigations performed on these ribosomal-mediated quinary interactions, the regulatory enzymes associated in glycolysis (hexokinase, phosphofructokinase, and pyruvate kinase) were titrated into a solution of 70S E. coli ribosome and analyzed via 1H-15N-HSQC NMR. The perturbations of the peaks associated …

Go to article

Novel Bioreactor Technology For Real Time In-Cell Nmr, Leonard Breindel Jan 2020

Novel Bioreactor Technology For Real Time In-Cell Nmr, Leonard Breindel

Legacy Theses & Dissertations (2009 - 2024)

Long has it been the goal of biochemists to observe a protein within the cellular environment allowing the true nature of a protein function to be determined within a cell. To understand the nature of a protein within a cell, the role of the cellular environment must be considered when determining the function as a protein. The cellular environment is a crowded place filled with macromolecules such as DNA, RNA and proteins that all interact with one another affecting the function of a protein. Intracellular macromolecules can reach concentrations of 300 g/L and occupy 30% of the available space in …

Go to article

Mixed-Valent Heterometallic Molecular Precursors : Expansion Into 4d Transition Metals, Jesse Caleb Carozza Jan 2020

Mixed-Valent Heterometallic Molecular Precursors : Expansion Into 4d Transition Metals, Jesse Caleb Carozza

Legacy Theses & Dissertations (2009 - 2024)

Hydrogen fuel can provide an ideal carbon-free energy carrier wherever water is available, be that on Earth or throughout the solar system. The use of water electrolysis to split water molecules into contaminant-free hydrogen gas, suitable for use in fuel cells, and oxygen gas allows also for storage of excess electrical energy during periods of high production and low demand, and an easy path to release that stored energy when demand is high and active supply is low. However, liberating hydrogen from water is an energy-intensive process, and effective electrocatalysts that reduce the amount of energy wasted by the reaction …

Go to article

Towards Machine Learning In Chemical Sensing : Milk Differentiation And Quality Control Through Two-Dimensional Nano-Sensor Array, Yu Sheng Chen Jan 2020

Towards Machine Learning In Chemical Sensing : Milk Differentiation And Quality Control Through Two-Dimensional Nano-Sensor Array, Yu Sheng Chen

Legacy Theses & Dissertations (2009 - 2024)

Herein, we developed a novel artificial tongue using machine learning and 12 nanoassemblies (2D-NAs) to identify and analyzed different kinds of milk beverages for quality control. This biomimetic sensor array was trained to “taste” different milk types as an “artificial tongue” which is the first time we demonstrated that this sensor array can be implemented to complex systems. Two-dimensional nanoparticles (2D-nps) and nine fluorescently labeled single stranded oligonucleotides (ssDNA) with different length and nucleobases were assembled to create 12 2D-NAs. The artificial tongue was deployed to identify and analyze five milk types. All five milk types were discriminated with 95% …

Go to article

Invariant-Based Online Software Anomaly Detection And Selective Regression Testing, Yizhen Chen Jan 2020

Invariant-Based Online Software Anomaly Detection And Selective Regression Testing, Yizhen Chen

Legacy Theses & Dissertations (2009 - 2024)

Software has been extensively used in various domains to provide online services. With the growing popularity of these types of applications, the quality of the software has a great impact on many of our daily activities [1]. Reliable software executions that deliver expected outcomes are essential for quality services. Software is considered abnormal when its behavior deviates from what is expected at any point during its execution. When anomalous behavior propagates to an exit point of the software and produces an incorrect output or an unexpected termination of the execution, it is considered a software failure. An anomaly may or …

Go to article

The Unrolled Quantum Group Of Sl(2) With Connections To Topological Quantum Field Theory And Vertex Operator Algebras, James F. Clark Jan 2020

The Unrolled Quantum Group Of Sl(2) With Connections To Topological Quantum Field Theory And Vertex Operator Algebras, James F. Clark

Legacy Theses & Dissertations (2009 - 2024)

This dissertation expands on the work of Constantino, Geer, and Patureau-Mirand \cite{CGP}, as well as Creutzig, Milas, and Rupert \cite{CMR} on exploring the unrolled quantum group of $\mathfrak{sl}(2)$ (denoted by $\overline{U_q}^H(\mathfrak{sl}_2)$) and the category of finite dimensional weight $\overline{U_q}^H(\mathfrak{sl}_2)$-modules (denoted by $\mathscr{C}$) for any $p$\textsuperscript{th} root of unity where $p>2$. This unrolled quantum group and category has connections to topological quantum field theory (TQFT) and to vertex operator algebras (VOAs). Significant results of this dissertation include proving that the $\mathscr{C}$ is a ribbon category, finding all simple and projective modules of $\mathscr{C}$ and proving that they form a full …

Go to article

Assessment Of The Status And Alignment Of Practitioners' Leadership In The Environmental Sector, Marie Veronique Couttee Jan 2020

Assessment Of The Status And Alignment Of Practitioners' Leadership In The Environmental Sector, Marie Veronique Couttee

Legacy Theses & Dissertations (2009 - 2024)

The scientific and technological achievements of the 21st century have failed to tackle the

Go to article

Parsimonious Covariate Selection For Interval Censored Data, Yi Cui Jan 2020

Parsimonious Covariate Selection For Interval Censored Data, Yi Cui

Legacy Theses & Dissertations (2009 - 2024)

Interval censored outcomes widely arise in many clinical trials and observational studies. In many cases, subjects are only followed-up periodically. As a result, the event of interest is known only to occur within a certain interval. We provided a method to select the parsimonious set of covariates associated with the interval censored outcome. First, the iterative sure independence screening (ISIS) method was applied to all interval censored time points across subjects to simultaneously select a set of potentially important covariates; then multiple testing approaches were used to improve the selection accuracy through refining the selection criteria, i.e. determining a refined …

Go to article

Dynamical Downscaling Of Near-Term Climate Variability And Change For The Main Hawaiian Islands Using Wrf, Katrina Marie Fandrich Jan 2020

Dynamical Downscaling Of Near-Term Climate Variability And Change For The Main Hawaiian Islands Using Wrf, Katrina Marie Fandrich

Legacy Theses & Dissertations (2009 - 2024)

As climate models continue to improve, the demand from resource managers and decision-makers for more accurate climate projections is increasing. However, natural climate variability poses a limit to the confidence in regional climate change projections, particularly for the mid-21st century. The unique geographic location of the Hawaiian Islands and its regional climate provide a challenging opportunity for climate modelers. The goal of this project is to examine both the Pacific Decadal Oscillation (PDO) and anthropogenic climate change for their impacts on near-term rainfall and temperature projections for the Hawaiian Islands. Of primary interest are the questions 1) is there a …

Go to article

Bioaffinity-Based Methods For Forensic, Biometric, And Clinical Purposes, Mindy Elizabeth Hair Jan 2020

Bioaffinity-Based Methods For Forensic, Biometric, And Clinical Purposes, Mindy Elizabeth Hair

Legacy Theses & Dissertations (2009 - 2024)

Biomarker analysis is a well-established discipline that involves the evaluation of biological samples for the presence of various substances indicative of personal attributes or illnesses. Sweat is one example of a biological fluid that is often overlooked for forensic and clinical analyses, even though it can contain DNA, various amino acids, and other low molecular weight compounds.1–3 The work presented in this dissertation focuses on the use of bioaffinity-based assays to quantify biomarkers in sweat for both forensic and clinical applications. The concentration of the biochemical content within an individual’s sweat are controlled by hormone-based metabolic pathways4 that fluctuate daily …

Go to article

Displacement Using Fentanyl And Bullet Analysis Using Atomic Absorption Spectroscopy, Henry Hance Jan 2020

Displacement Using Fentanyl And Bullet Analysis Using Atomic Absorption Spectroscopy, Henry Hance

Legacy Theses & Dissertations (2009 - 2024)

Opioids are substances that bind to opioid receptors in the central nervous system and can be endogenous, naturally occurring opium alkaloids derived from opium poppy or semi-synthetic and or synthetic compounds.1 Fentanyl is a synthetic opioid that has flooded the US market in the last decade. Synthetic opioid deaths increased by 100% from 2015 to 2016.2 The synthetic opioid is still used to treat severe chronic pain and during surgeries as an anesthetic, but has flooded the black market through illegal means. Fentanyl is prescribed in the forms of patches and lozenges, but can be abused and illegal sold in …

Go to article

Optimal Excitation Wavelength For Raman Spectroscopic Analysis Of Organic Gunshot Residue Evidence, Ashley Hull Jan 2020

Optimal Excitation Wavelength For Raman Spectroscopic Analysis Of Organic Gunshot Residue Evidence, Ashley Hull

Legacy Theses & Dissertations (2009 - 2024)

Gunshot residue (GSR) is a type of trace evidence that can often be recovered at violent crime scenes. There are two major types of GSR, organic gunshot residue (OGSR), and inorganic gunshot residue (IGSR). Traditional forensic analysis of GSR focuses on IGSR, although with the movement towards lead-free, or non-toxic ammunition, IGSR analysis has become less informative, as lead is a major component of IGSR analysis. Because of this, OGSR has been investigated to supplement the standard IGSR analysis methods. Previous work has shown Raman spectroscopy to be effective at identifying OGSR as well as a minimally destructive and specific …

Go to article

An Analysis Of Income And Other Associative Demographics To Charity Donation And Volunteerism, Christine Lynn Klotz Jan 2020

An Analysis Of Income And Other Associative Demographics To Charity Donation And Volunteerism, Christine Lynn Klotz

Legacy Theses & Dissertations (2009 - 2024)

Nongovernmental organizations have a vast institutional presence across the United States. Each year, there is an ever-increasing body of charitable organizations which span, enhance and characterize the civil sphere. Overall, charities occupy an important institutional role in society, and the individuals who help to sustain charities encompass a vital social role. This paper is particularly concerned with analyzing charitable donation and volunteering dynamics on the individual level. Using the 2014 General Social Survey data on charitableness, this paper estimates the probability of engaging in volunteerism and charitable donation within the nonprofit sector based on income level. These results suggest that …

Go to article

Test 2218: Kubota M8-201, Nebraska Tractor Test Lab Jan 2020

Test 2218: Kubota M8-201, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Go to article

Test 2222: John Deere 8r 340, Nebraska Tractor Test Lab Jan 2020

Test 2222: John Deere 8r 340, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Go to article

Neutroalgebra Is A Generalization Of Partial Algebra, Florentin Smarandache Jan 2020

Neutroalgebra Is A Generalization Of Partial Algebra, Florentin Smarandache

Branch Mathematics and Statistics Faculty and Staff Publications

In this paper we recall, improve, and extend several definitions, properties and applications of our previous 2019 research referred to NeutroAlgebras and AntiAlgebras (also called NeutroAlgebraic Structures and respectively AntiAlgebraic Structures). Let be an item (concept, attribute, idea, proposition, theory, etc.). Through the process of neutrosphication, we split the nonempty space we work on into three regions {two opposite ones corresponding to and , and one corresponding to neutral (indeterminate) (also denoted ) between the opposites}, which may or may not be disjoint – depending on the application, but they are exhaustive (their union equals the whole space). A NeutroAlgebra …

Go to article

Remark On Lehnert’S Revised Quantum Electrodynamics (Rqed) As An Alternative To Francesco Celani’S Et Al. Maxwell-Clifford Equations: With An Outline Of Chiral Cosmology Model And Its Role To Cmns, Florentin Smarandache, Victor Christianto, Yunita Umniyati Jan 2020

Remark On Lehnert’S Revised Quantum Electrodynamics (Rqed) As An Alternative To Francesco Celani’S Et Al. Maxwell-Clifford Equations: With An Outline Of Chiral Cosmology Model And Its Role To Cmns, Florentin Smarandache, Victor Christianto, Yunita Umniyati

Branch Mathematics and Statistics Faculty and Staff Publications

In a recent paper published in JCMNS in 2017, Francesco Celani, Di Tommaso & Vassalo argued that Maxwell equations rewritten in Clifford algebra are sufficient to describe the electron and also ultra-dense deuterium reaction process proposed by Homlid et al. Apparently, Celani et al. believed that their Maxwell-Clifford equations are an excellent candidate to surpass both Classical Electromagnetic and Zitterbewegung QM. Meanwhile, in a series of papers, Bo Lehnert proposed a novel and revised version of Quantum Electrodynamics (RQED) based on Proca equations. Therefore, in this paper, we gave an outline of Lehnert’s RQED, as an alternative framework to Celani …

Go to article

Quadruple Neutrosophic Theory And Applications Volume I, Florentin Smarandache, Memet Şahin, Vakkas Uluçay, Abdullah Kargin Jan 2020

Quadruple Neutrosophic Theory And Applications Volume I, Florentin Smarandache, Memet Şahin, Vakkas Uluçay, Abdullah Kargin

Branch Mathematics and Statistics Faculty and Staff Publications

Neutrosophic set has been derived from a new branch of philosophy, namely Neutrosophy. Neutrosophic set is capable of dealing with uncertainty, indeterminacy and inconsistent information. Neutrosophic set approaches are suitable to modeling problems with uncertainty, indeterminacy and inconsistent information in which human knowledge is necessary, and human evaluation is needed. Neutrosophic set theory firstly proposed in 1998 by Florentin Smarandache, who also developed the concept of single valued neutrosophic set, oriented towards real world scientific and engineering applications. Since then, the single valued neutrosophic set theory has been extensively studied in books and monographs introducing neutrosophic sets and its applications, …

Go to article

The Neutrosophic Triplet Of ����-Algebras, Florentin Smarandache, Akbar Rezaei Jan 2020

The Neutrosophic Triplet Of ����-Algebras, Florentin Smarandache, Akbar Rezaei

Branch Mathematics and Statistics Faculty and Staff Publications

In this paper, the concepts of a Neutro-����-algebra and Anti-����-algebra are introduced, and some related properties are investigated. We show that the class of Neutro-����-algebra is an alternative of the class of ����-algebras.

Go to article

Neutro-Bck-Algebra, Florentin Smarandache, Mohammad Hamidi Jan 2020

Neutro-Bck-Algebra, Florentin Smarandache, Mohammad Hamidi

Branch Mathematics and Statistics Faculty and Staff Publications

This paper introduces the novel concept of Neutro-BCK-algebra. In Neutro-BCK-algebra, the outcome of any given two elements under an underlying operation (neutro-sophication procedure) has three cases, such as: appurtenance, non-appurtenance, or indeterminate. While for an axiom: equal, non-equal, or indeterminate. This study investigates the Neutro-BCK-algebra and shows that Neutro-BCK-algebra are different from BCK-algebra. The notation of Neutro-BCK-algebra generates a new concept of NeutroPoset and Neutro-Hass-diagram for NeutroPosets. Finally, we consider an instance of applications of the Neutro-BCK-algebra.

Go to article

First Prev Next Last