Digital Commons Network^™

Pressure Control Of High-Pressure Oil Pipe, Wenrui Qu, Lei Liu, Qun Zhao

Faculty Publications

In this paper, to realize the pressure stability control of high-pressure oil pipe, the dynamic differential equation of fuel oil inlet and outlet is established based on the theory of mass conservation. According to the change of the pressure in the high-pressure tubing, an optimization model is established to achieve precise control of the working time of each part of the high-pressure oil pipe.

Interpretability Of Api Call Topic Models: An Exploratory Study, Puntitra Glendowne, Dae Glendowne

Faculty Publications

Topic modeling is an unsupervised method for discovering semantically coherent combinations of words, called topics, in unstructured text. However, the human interpretability of topics discovered from non-natural language corpora, specifically Windows API call logs, is unknown. Our objective is to explore the coherence of topics and their ability to represent the themes of API calls from malware analysts’ perspective. Three Latent Dirichlet Allocation (LDA) models were fit to a collection of dynamic API call logs. Topics, or behavioral themes, were manually evaluated by malware analysts. The results were compared to existing automated quality measures. Participants were able to accurately determine …

Holistic Review In Race-Conscious University Admissions, Hal Arkes, George W. Dent Jr.

Faculty Publications

The Supreme Court has held that race may be considered as “a factor of a factor of a factor” within a “holistic” program of university admissions if the university can satisfy a heavy burden of proving that the program is “narrowly tailored” to achieve the educational benefits of diversity. The Court has listed the desired benefits of racial diversity, but it has not discussed what evidence a university needs to prove that its program is “narrowly tailored” to achieve those benefits.

This article addresses that issue. The field of psychology offers abundant research about the process of judgment and decision-making …

Spectroscopic Study On Pseudomonas Aeruginosa Biofilm In The Presence Of The Aptamer-Dna Scaffolded Silver Nanoclusters, Bidisha Sengupta, Prakash Adhikari, Esther Mallet, Ronald Havner, Prabhakar Pradhan

Faculty Publications

We report the effectiveness of silver nanocluster (Ag-NC) against the biofilm of Pseudomonas aeruginosa (PA). Two DNA aptamers specific for PA and part of their sequences were chosen as templates for growing the Ag-NC. While circular dichroism (CD) studies determined the presence of secondary structures, UV/Vis absorption, and fluorescence spectroscopic studies confirmed the formation of the fluorescent Ag-NC on the DNA templates. Furthermore, mesoscopic physics-based partial wave spectroscopy (PWS) was used to analyze the backscattered light signal that can detect the degree of nanoscale mass density/refractive index fluctuations to identify the biofilm formation, comparatively among the different aptamers with respect …

Data On Gc/Ms Elution Profile, 1h And 13c Nmr Spectra Of 1-, 3-, And 6-Nitrobenzo[A]Pyrenes, Kefa Karimu Onchoke

Faculty Publications

The data presented in this article is related to the research article entitled, “¹³C NMR Chemical Shift Assignments of Nitrated Benzo[a]pyrenes based on Two-dimensional Techniques and DFT/GIAO Calculations”, Kefa K. Onchoke, PeerJ., . The NMR spectral profiles of nitrated benzo[a]pyrenes is presented. Further, the article describes elution profiles of 1-, 3- and 6-NBaP, the acquisition of ¹H and ¹³C NMR data and the J-Coupling constants (which are useful for the assignment of peaks via 2D HMQC and HMBC techniques). The data presented is useful for developing structure-activity relationships for other nitrated polycyclic aromatic hydrocarbons (NPAHs)

Patent Law’S Purposeful Ambiguity, Craig Allen Nard

Faculty Publications

The ambiguity of language is an unremarkable, yet persistent force within our legal system. In the context of patent law, ambiguity presents a particularly acute dilemma; namely, while describing technological innovations is a salient feature of the patent system, affecting the validity and scope of one’s property right, the blunt nature of language makes this task particularly difficult. This paper argues to address this vexing fixture, patent doctrine purposely embraces ambiguity as a linguistic accommodation that provides measured flexibility for actors to claim and describe their innovations. It should not be surprising, therefore, that some of patent law’s most venerable …

Big Data And Its Visualization With Fog Computing, Richard S. Segall, Gao Niu

Faculty Publications

Big Data is data sets that are so voluminous and complex that traditional data processing application software are inadequate to deal with them. This article discusses what is Big Data, and its characteristics, and how this information revolution of Big Data is transforming our lives and the new technology and methodologies that have been developed to process data of these huge dimensionalities. Big Data can be discrete or a continuous stream of data, and can be accessed using many types and kinds of computing devices ranging from supercomputers, personal work stations, to mobile devices and tablets. Discussion is presented of …

Open Source Software (Oss) For Big Data, Richard S. Segall

Faculty Publications

This chapter discusses Open Source Software and associated technologies for the processing of Big Data. This includes discussions of Hadoop-related projects, the current top open source data tools and frameworks such as SMACK that is acronym for open source technologies Spark, Mesos, Akka, Cassandra, and Kafka that together compose the ingestion, aggregation, analysis, and storage layers for Big Data processing. Tabular summaries and categories for 38 Open Source Statistical Software (OSSS) are provided that include for each listing of features and URLs for free downloads. The current challenges of Big Data and Open Source Software are also discussed.

Geometry And Topology Of Estuary And Braided River Channel Networks Automatically Extracted From Topographic Data, Matthew Hiatt

Faculty Publications

No abstract provided.

Gain The Upper Hand With Good Typography, Melissa Love Koenig, Joseph S. Diedrich

Faculty Publications

No abstract provided.

Inclusion & Marginalization: How Perceptions Of Design Thinking Pedagogy Influence Computer, Electrical, And Software Engineering Identity, Sarah L. Rodriguez, Erin E. Doran, Rachel E. Friedensen, Elizabeth Martínez-Podolsky, Paul S. Hengesteg

Faculty Publications

Engineering identity plays a vital role in the persistence of engineering students, yet limited research exists on how particular pedagogical approaches influence engineering identity at the college level. This qualitative case study explored how undergraduate student perceptions of design thinking pedagogy influence computer, electrical, and software engineering identity. The study found that design thinking pedagogy reinforces the recognition of an engineering identity, particularly for those from historically marginalized groups (i.e., women, people of color). Intentional implementation, including organization and framing of design thinking pedagogy, was an essential foundation for fostering student interest in the course and connecting to their role …

The Lengthening Transition To Adulthood: Financial Parenting And Recentering During The College-To-Career Transition, Joyce Serido, Ashley B. Lebaron, Lijun Li, Emily Parrot, Soyeon Shim

Faculty Publications

Using longitudinal data collected from a college cohort in the United States (N = 922), we examined the associations between systemic and structural factors (gender, race/ethnicity, family SES, and first-generation college status), financial parenting (teaching, and modeling behavior), and emerging adults’ financial behavior. We conducted a series of one-way repeated measure ANOVA analyses (GLM) to assess patterns of average change in financial parenting and financial behavior in the first year in college, fourth year in college, and two years after college and found evidence suggestive of recentering—a gradual transfer of responsibility during emerging adulthood from parent-directed behavior to self-directed behavior; …

Historical Milestones In Astronomy: As Shown Through The Byu Special Collections Archives, Dan Broadbent

Faculty Publications

Science Research: The “Long Conversation”

• Ideas in science can take a long time to develop.
• How do they develop?

• These books document a part of a conversation that began 447 years ago and spanned a 153 year period… documenting:
• how the overall nature of the universe was worked out,
• the establishment of the scientific method, and the boundaries of religious authority,
• and culminated in Isaac Newton’s book that presented his three laws of motion that allow us to explore the universe to this day.

Modeling The Effects Of Trait-Mediated Dispersal On Coexistence Of Mutualists, James T. Cronin, Jerome Goddard, Amila Muthunayake, Ratnasingham Shivaji

Faculty Publications

© 2020 the Author(s), licensee AIMS Press. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0) Even though mutualistic interactions are ubiquitous in nature, we are still far from making good predictions about the fate of mutualistic communities under threats such as habitat fragmentation and climate change. Fragmentation often causes declines in abundance of a species due to increased susceptibility to edge effects between remnant habitat patches and lower quality “matrix” surrounding these focal patches. It has been argued that ecological communities are replete with trait-mediated indirect effects, and that these effects …

Modeling The Effects Of Density Dependent Emigration, Weak Allee Effects, And Matrix Hostility On Patch-Level Population Persistence, James T. Cronin, Nalin Fonseka, Jerome Goddard, Jackson Leonard, Ratnasingham Shivaji

Faculty Publications

© 2020 the Author(s), licensee AIMS Press. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0) The relationship between conspecific density and the probability of emigrating from a patch can play an essential role in determining the population-dynamic consequences of an Allee effect. In this paper, we model a population that inside a patch is diffusing and growing according to a weak Allee effect per-capita growth rate, but the emigration probability is dependent on conspecific density. The habitat patch is one-dimensional and is surrounded by a tuneable hostile matrix. We consider five …

Rotation And Spin And Position Operators In Relativistic Gravity And Quantum Electrodynamics, Robert F. O’Connell

Faculty Publications

First, we examine how spin is treated in special relativity and the necessity of introducing spin supplementary conditions (SSC) and how they are related to the choice of a center-of-mass of a spinning particle. Next, we discuss quantum electrodynamics and the Foldy–Wouthuysen transformation which we note is a position operator identical to the Pryce–Newton–Wigner position operator. The classical version of the operators are shown to be essential for the treatment of classical relativistic particles in general relativity, of special interest being the case of binary systems (black holes/neutron stars) which emit gravitational radiation.

Effect Of Mitigation Measures On The Spreading Of Covid-19 In Hard-Hit States In The Us, K M. Tam, N Walker, J Moreno

Faculty Publications

State government-mandated social distancing measures have helped to slow the growth of the COVID-19 pandemic in the United States. Many of the current predictive models of the development of COVID-19, especially after mitigation efforts, partially rely on extrapolations from data collected in other countries. Since most states enacted stay-at-home orders towards the end of March, the resulting effects of social distancing should be reflected in the death and infection counts by the end of April. Using the data available through April 25(th), we investigate the change in the infection rate due to the mitigation efforts and project death and infection …

First Person: The Pandemic's Silver Lining: Real Talk For Future Teachers, J Hipp

Faculty Publications

When the COVID-19 pandemic closed her university campus, Jamie Hipp had to move her popular arts integration class for preservice teachers to a virtual format. She was surprised to learn that her students wanted more than regular sessions during their scheduled class times; they wanted additional opportunities for real teacher talk about going on interviews, setting up a classroom, and other practical matters that weren't being covered in their preservice program. Hipp set up a series of virtual sessions on topics of interest to students, in addition to regular class sessions. The sessions went so well that Hipp intends to …

Review Of Particle Physics, P. A. Zyla, R. M. Barnett, J. Beringer, O. Dahl, D. A. Dwyer, D. E. Groom, C. J. Lin, K. S. Lugovsky, E. Pianori, D. J. Robinson, C. G. Wohl, W. M. Yao, K. Agashe, G. Aielli, B. C. Allanach, C. Amsler, M. Antonelli, E. C. Aschenauer, D. M. Asner, H. Baer, Sw Banerjee, L. Baudis, C. W. Bauer, J. J. Beatty, V. I. Belousov, S. Bethke, A. Bettini, O. Biebel, K. M. Black, E. Blucher, O. Buchmuller, V. Burkert, M. A. Bychkov

Faculty Publications

The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 3,324 new measurements from 878 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle properties and search limits are listed in Summary Tables. We give numerous tables, figures, formulae, and reviews of topics such as Higgs Boson Physics, Supersymmetry, Grand Unified Theories, Neutrino Mixing, Dark Energy, Dark Matter, Cosmology, Particle Detectors, Colliders, Probability and Statistics. …

Evaluation Of Gene Flow In Structured And Seed Blend Refuge Systems Of Non-Bt And Bt Corn, Galen P. Dively, Fangneng Huang, Isaac Oyediran, Tony Burd, Shannon Morsello

Faculty Publications

Gene flow between Bt and non-Bt plants can have implications for resistance management. In 2013 and 2014, field trials in Maryland and Louisiana measured gene flow in three refuge systems: (1) structured refuge stand of purple-seeded corn flanked on both sides by stands of yellow corn; (2) seed blend of yellow corn containing purple corn as refuges; and (3) seed blend of purple-seeded corn containing yellow corn as refuges. The presence of cross-pollinated purple kernels was used as a marker to quantify gene flow. In the structured refuge, cross-pollination between Bt and structured refuge plants averaged 5.4% on adjacent rows …

Early Detection Of Parkinson's Disease Using Deep Learning And Machine Learning, Wu Wang, Junho Lee, Fouzi Harrou, Ying Sun

Faculty Publications

Accurately detecting Parkinson's disease (PD) at an early stage is certainly indispensable for slowing down its progress and providing patients the possibility of accessing to disease-modifying therapy. Towards this end, the premotor stage in PD should be carefully monitored. An innovative deep-learning technique is introduced to early uncover whether an individual is affected with PD or not based on premotor features. Specifically, to uncover PD at an early stage, several indicators have been considered in this study, including Rapid Eye Movement and olfactory loss, Cerebrospinal fluid data, and dopaminergic imaging markers. A comparison between the proposed deep learning model and …

Wind Power Prediction Using Ensemble Learning-Based Models, Junho Lee, Wu Wang, Fouzi Harrou, Ying Sun

Faculty Publications

Wind power is one of the most potential energies and the major available renewable energy sources. Precisely predicting wind power production is essential for the management and the integration of wind power in a smart grid. The goal of this study is to predict wind power production with sufficient accuracy based on various factors using ensemble learning-based methods that consider the time-dependent nature of the wind power measurements. Essentially, the ensemble learning methods combine multiple learners to obtain an enhanced prediction performance in comparison to conventional standalone learners. In addition, they reduce the overall prediction error and have the capacity …

Averages Along The Primes: Improving And Sparse Bounds, Rui Han, Ben Krause, Michael T. Lacey, Fan Yang

Faculty Publications

Consider averages along the prime integers P given by ANf(x)=N-1 p:p≤N(logp)f(x-p). A N f(x) = {N-1*∑ ∈ P:p ≤ N} (p)f(x-p).} These averages satisfy a uniform scale-free p-improving estimate. For all 1 < p < 2, there is a constant Cp so that for all integer N and functions f supported on [0, N], there holds N-1/p′-ANf-p′≤CpN-1/p-f-p. {N-1/p'ANf |ℓ p'≤ C_p N-1p| f |ℓ p. The maximal function A∗f = supN|AN f | satisfies (p, p) sparse bounds for all 1 < p < 2. The latter are the natural variants of the scale-free bounds. As a corollary, A∗ is bounded on Ap(w), for all weights w in the Muckenhoupt Ap class. No prior weighted inequalities for A∗ were known.

The 2-Factor Polynomial Detects Even Perfect Matchings, Scott Baldridge, Adam M. Lowrance, Ben Mccarty

Faculty Publications

In this paper, we prove that the 2-factor polynomial, an invariant of a planar trivalent graph with a perfect matching, counts the number of 2-factors that contain the perfect matching as a subgraph. Consequently, we show that the polynomial detects even perfect matchings.

Minimal Flag Triangulations Of Lower-Dimensional Manifolds, Christin Bibby, Andrew Odesky, Mengmeng Wang, Shuyang Wang, Ziyi Zhang, Hailun Zheng

Faculty Publications

We prove the following results on flag triangulations of 2-and 3-manifolds. In dimension 2, we prove that the vertex-minimal flag triangulations of ℝP and S × S have 11 and 12 vertices, respectively. In general, we show that 8 + 3k (resp. 8+4k) vertices suffice to obtain a flag triangulation of the connected sum of k copies of ℝP (resp. S × S ). In dimension 3, we describe an algorithm based on the Lutz–Nevo theorem which provides supporting computational evidence for the following generalization of the Charney–Davis conjecture: for any flag 3-manifold, γ := f −5 f +16 ≥ …

Some Numeric Hypergeometric Supercongruences, Ling Long

Faculty Publications

In this article, we list a few hypergeometric supercongruence conjectures based on two evaluation formulas of Whipple and numeric data computed using Magma and Sagemath.

Circuit-Difference Matroids, George Drummond, James Oxley, Kevin Grace, Tara Fife

Faculty Publications

One characterization of binary matroids is that the symmetric difference of every pair of intersecting circuits is a disjoint union of circuits. This paper considers circuit-difference matroids, that is, those matroids in which the symmetric difference of every pair of intersecting circuits is a single circuit. Our main result shows that a connected regular matroid is circuit-difference if and only if it contains no pair of skew circuits. Using a result of Pfeil, this enables us to explicitly determine all regular circuit-difference matroids. The class of circuit-difference matroids is not closed under minors, but it is closed under series minors. …

On Density-Critical Matroids, Rutger Campbell, Kevin Grace, James Oxley, Geoff Whittle

Faculty Publications

For a matroid M having m rank-one flats, the density d(M) isr(M)m unless m = 0, in which case d(M) = 0. A matroid is density-critical if all of its proper minors of non-zero rank have lower density. By a 1965 theorem of Edmonds, a matroid that is minor-minimal among simple matroids that cannot be covered by k independent sets is density-critical. It is straightforward to show that U1,k+1 is the only minor-minimal loopless matroid with no covering by k independent sets. We prove that there are exactly ten minor-minimal simple obstructions to a matroid being able to be covered …

Context-Aware Design Of Cyber-Physical Human Systems (Cphs), Supratik Mukhopadhyay, Subhajit Sidhanta, Arnab Ganguly, Qun Liu, Edward Collier, Yimin Zhu, Ravindra Gudishala, Chanachok Chokwitthaya, Robert Dibiano, Alimire Nabijiang, Sanaz Saeidi

Faculty Publications

Recently, it has been widely accepted by the research community that interactions between humans and cyber-physical infrastructures have played a significant role in determining the performance of the latter. The existing paradigm for designing cyber-physical systems for optimal performance focuses on developing models based on historical data. The impacts of context factors driving human system interaction are challenging and are difficult to capture and replicate in existing design models. As a result, many existing models do not or only partially address those context factors of a new design owing to the lack of capabilities to capture the context factors. This …

Additive Schwarz Preconditioners For A State Constrained Elliptic Distributed Optimal Control Problem Discretized By A Partition Of Unity Method, Susanne C. Brenner, Christopher B. Davis, Li Yeng Sung

Faculty Publications

The minimization problem (2) is discretized in [4] by a partition of unity method (PUM). The goal of this paper is to use the ideas in [5] for an obstacle problem of clamped Kirchhoff plates to develop preconditioners for the discrete problems in [4].