Physical Sciences and Mathematics Commons^™

2017: Himcm International Mathematics Modeling Contest: Meritorious Rating, Spoorthi Jakka, Claire Wang, Amy Wang, Claudia Zhu '18

Distinguished Student Work

Restatement of the Problem:

The integration of drones for light shows, alongside modes of delivery, have seen soaring popularity with modernity: both literally and physically. With the employment of drones in events like the Superbowl, and Intel light shows, drones’ uses have widespread implications that are quickly gaining momentum. In an order to implement these drones in light shows, adherence to regulations alongside quantifying and monitoring the path for a set number of drones is crucial.

For an outdoor aerial light show that will display a Ferris wheel, a dragon, and another unique image, various factors need to be taken …

2017: "The Wasatch Range Ski-Matic", Andy Liu, Bert Cao, Joshua Eberhardt, Allen Chen

Distinguished Student Work

Ski resorts are very popular among both avid skiers and families who are looking to have fun. In fact, winter resorts account for over 3 billion dollars in revenue, with an annual growth of 2.6% [IBI]. In addition to their use as recreational areas, ski resorts are also used for various winter competitions, most famously the Olympics. Our job was to design and create a suitable ski resort for both the Olympics and for recreational use in the Wasatch Peaks Range property. In addition, we were advised to create over 160km of trails and maintain a 20%- 40%-40% balance between …

Ginkgo Biloba (Ginkgo/Maidenhair) Id# 44, Christopher J. Mazulis

BIO 140 Arboretum Project

Location: Walgreen Hall lawn

Height: 19 m

Diameter at Breast Height: 66 cm

Radius of Crown: 4.5 m

Condition: Middle condition

Indexable Bayesian Personalized Ranking For Efficient Top-K Recommendation, Dung D. Le, Hady W. Lauw

Research Collection School Of Computing and Information Systems

Top-k recommendation seeks to deliver a personalized recommendation list of k items to a user. The dual objectives are (1) accuracy in identifying the items a user is likely to prefer, and (2) efficiency in constructing the recommendation list in real time. One direction towards retrieval efficiency is to formulate retrieval as approximate k nearest neighbor (kNN) search aided by indexing schemes, such as locality-sensitive hashing, spatial trees, and inverted index. These schemes, applied on the output representations of recommendation algorithms, speed up the retrieval process by automatically discarding a large number of potentially irrelevant items when given a user …

The Impact Of Coverage On Bug Density In A Large Industrial Software Project, Thomas Bach, Artur Andrzejak, Ralf Pannemans, David Lo

Research Collection School Of Computing and Information Systems

Measuring quality of test suites is one of the major challenges of software testing. Code coverage identifies tested and untested parts of code and is frequently used to approximate test suite quality. Multiple previous studies have investigated the relationship between coverage ratio and test suite quality, without a clear consent in the results. In this work we study whether covered code contains a smaller number of future bugs than uncovered code (assuming appropriate scaling). If this correlation holds and bug density is lower in covered code, coverage can be regarded as a meaningful metric to estimate the adequacy of testing. …

Deciphering The Enigma Of Undetected Species, Phylogenetic, And Functional Diversity Based On Good-Turing Theory, Anne Chao, Chun Huo Chiu, Robert K. Colwell, Luiz Fernando S. Magnago, Robin L. Chazdon, Nicholas J. Gotelli

College of Arts and Sciences Faculty Publications

Estimating the species, phylogenetic, and functional diversity of a community is challenging because rare species are often undetected, even with intensive sampling. The Good-Turing frequency formula, originally developed for cryptography, estimates in an ecological context the true frequencies of rare species in a single assemblage based on an incomplete sample of individuals. Until now, this formula has never been used to estimate undetected species, phylogenetic, and functional diversity. Here, we first generalize the Good-Turing formula to incomplete sampling of two assemblages. The original formula and its two-assemblage generalization provide a novel and unified approach to notation, terminology, and estimation of …

A Comprehensive Framework For The Study Of Species Co-Occurrences, Nestedness And Turnover, Werner Ulrich, Wojciech Kryszewski, Piotr Sewerniak, Radosław Puchałka, Giovanni Strona, Nicholas J. Gotelli

College of Arts and Sciences Faculty Publications

Binary presence–absence matrices (rows = species, columns = sites) are often used to quantify patterns of species co-occurrence, and to infer possible biotic interactions from these patterns. Previous classifications of co-occurrence patterns as nested, segregated, or modular have led to contradictory results and conclusions. These analyses usually do not incorporate the functional traits of the species or the environmental characteristics of the sites, even though the outcomes of species interactions often depend on trait expression and site quality. Here we address this shortcoming by developing a method that incorporates realized functional and environmental niches, and relates them to species co-occurrence …

A Colorimetric Competitive Displacement Assay For The Evaluation Of Catalytic Peptides, Anneliese Gest, Erika M. Aguiluz, Malik T. Mays, Xinyu Liu, Eliza K. Neidhart, Leah S. Witus

Faculty Publications

No abstract provided.

Iowa Waste Reduction Center Newsletter, November 2017, University Of Northern Iowa. Iowa Waste Reduction Center.

Iowa Waste Reduction Center Newsletter

Inside this Issue:

--- 2017 RCRA Changes - Are You Still in Compliance?
--- Does Your Facility Have an Air Quality Construction Permit?
--- STAR4D Program Featured in UNI Panther Caucus
--- Iowa Rural Communities Food Waste Reduction Project: Postville and Chariton
--- Industry News

Air-Oxidation Of Phenolic Resin Aerogels: Backbone Reorganization, Formation Of Ring-Fused Pyrylium Cations, And The Effect On Microporous Carbons With Enhanced Surface Areas, Hojat Majedi Far, Suraj Donthula, Tahereh Taghvaee, Adnan Malik Saeed, Zachary Garr, Chariklia Sotiriou-Leventis, Nicholas Leventis

Chemistry Faculty Research & Creative Works

This paper is a thorough investigation of the chemical transformations during pyrolytic conversion of phenolic resins to carbons, and reports that all carbons obtained from main-stream phenolic resins including phloroglucinol-formaldehyde (FPOL), phloroglucinol-terephthalaldehyde (TPOL), resorcinol-formaldehyde (RF), and phenol-formaldehyde (PF) contain fused pyrylium rings and charge-compensating phenoxides. Those four phenolic resins were prepared via a fast HCl-catalyzed process as low-density nanostructured solids classified as aerogels, which, owing to their open porosity, allowed air circulation through their bulk. In that regard, the first step of this study was the air-oxidation of those phenolic resin aerogels at 240 °C. In FPOL and TPOL aerogels, …

Design The Capacity Of Onsite Generation System With Renewable Sources For Manufacturing Plant, Xiao Zhong, Md Monirul Islam, Haoyi Xiong, Zeyi Sun

Computer Science Faculty Research & Creative Works

The utilization of onsite generation system with renewable sources in manufacturing plants plays a critical role in improving the resilience, enhancing the sustainability, and bettering the cost effectiveness for manufacturers. When designing the capacity of onsite generation system, the manufacturing energy load needs to be met and the cost for building and operating such onsite system with renewable sources are two critical factors need to be carefully quantified. Due to the randomness of machine failures and the variation of local weather, it is challenging to determine the energy load and onsite generation supply at different time periods. In this paper, …

Learning Curve Analysis Using Intensive Longitudinal And Cluster-Correlated Data, Xiao Zhong, Zeyi Sun, Haoyi Xiong, Neil Heffernan, Md Monirul Islam

Engineering Management and Systems Engineering Faculty Research & Creative Works

Intensive longitudinal and cluster-correlated data (ILCCD) can be generated in any situation where numerical or categorical characteristics of multiple individuals or study units are observed and measured at tens, hundreds, or thousands of occasions. The spacing of measurements in time for each individual can be regular or irregular, fixed or random, and the number of characteristics measured at each occasion may be few or many. Such data can also arise in situations involving continuous-time measurements of recurrent events. Generalized linear models (GLMs) are usually considered for the analysis of correlated non-normal data, while multivariate analysis of variance (MANOVA) is another …

Contemporary Issues Of Open Data In Information Systems Research: Considerations And Recommendations, Georg J.P. Link, Kevin Lumbard, Kieran Conboy, Michael Feldman, Joseph Feller, Jordana George, Matt Germonprez, Sean Goggins, Debora Jeske, Gaye Kiely, Kristen Schuster, Matt Willis

Information Systems and Quantitative Analysis Faculty Publications

Researchers, governments, and funding agencies are calling on research disciplines to embrace open data - data that is publicly accessible and usable beyond the original authors. The premise is that research efforts can draw and generate several benefits from open data, as such data might provide further insight, enabling the replication and extension of current knowledge in different contexts. These potential benefits, coupled with a global push towards open data policies, brings open data into the agenda of research disciplines – including Information Systems (IS). This paper responds to these developments as follows. We outline themes in the ongoing discussion …

Ordinal Convolutional Neural Networks For Predicting Rdoc Positive Valence Psychiatric Symptom Severity Scores, Anthony Rios, Ramakanth Kavuluru

Computer Science Faculty Publications

Background—The CEGS N-GRID 2016 Shared Task in Clinical Natural Language Processing (NLP) provided a set of 1000 neuropsychiatric notes to participants as part of a competition to predict psychiatric symptom severity scores. This paper summarizes our methods, results, and experiences based on our participation in the second track of the shared task.

Objective—Classical methods of text classification usually fall into one of three problem types: binary, multi-class, and multi-label classification. In this effort, we study ordinal regression problems with text data where misclassifications are penalized differently based on how far apart the ground truth and model predictions are …

Predicting Mental Conditions Based On "History Of Present Illness" In Psychiatric Notes With Deep Neural Networks, Tung Tran, Ramakanth Kavuluru

Computer Science Faculty Publications

Background—Applications of natural language processing to mental health notes are not common given the sensitive nature of the associated narratives. The CEGS N-GRID 2016 Shared Task in Clinical Natural Language Processing (NLP) changed this scenario by providing the first set of neuropsychiatric notes to participants. This study summarizes our efforts and results in proposing a novel data use case for this dataset as part of the third track in this shared task.

Objective—We explore the feasibility and effectiveness of predicting a set of common mental conditions a patient has based on the short textual description of patient’s history …

Entropy Production In A Fluid-Solid System Far From Thermodynamic Equilibrium, Bong Jae Chung, Blas Ortega, Ashuwin Vaidya

Department of Applied Mathematics and Statistics Faculty Scholarship and Creative Works

Abstract.: The terminal orientation of a rigid body in a moving fluid is an example of a dissipative system, out of thermodynamic equilibrium and therefore a perfect testing ground for the validity of the maximum entropy production principle (MaxEP). Thus far, dynamical equations alone have been employed in studying the equilibrium states in fluid-solid interactions, but these are far too complex and become analytically intractable when inertial effects come into play. At that stage, our only recourse is to rely on numerical techniques which can be computationally expensive. In our past work, we have shown that the MaxEP is a …

Angioarchitectures And Hemodynamic Characteristics Of Posterior Communicating Artery Aneurysms And Their Association With Rupture Status, Bong Jae Chung, Ravi Doddasomayajula, Fernando Mut, Felicitas Detmer, Michael Pritz, Farid Hamzei-Sichani, Waleed Brinjikji, David F. Kallmes, Carlos M. Jimenez, Christopher Putman, Juan Cebral

Department of Applied Mathematics and Statistics Faculty Scholarship and Creative Works

BACKGROUND AND PURPOSE: Intracranial aneurysms originating at the posterior communicating artery are known to have high rupture risk compared with other locations. We tested the hypothesis that different angioarchitectures (ie, branch point configuration) of posterior communicating artery aneurysms are associated with aneurysm hemodynamics, which in turn predisposes aneurysms to rupture.

MATERIALS AND METHODS: A total of 313 posterior communicating artery aneurysms (145 ruptured, 168 unruptured) were studied with image-based computational fluid dynamics. Aneurysms were classified into different angioarchitecture types depending on the location of the aneurysm with respect to parent artery bifurcation. Hemodynamic characteristics were compared between ruptured and unruptured …

Geochemical Characteristics And Storm Dynamics Of Surface Waters And Groundwater At Eastern Kentucky University’S Meadowbrook Farm, Madison County, Kentucky, Reid E. Buskirk, Walter S. Borowski, Jonathan M. Malzone

EKU Faculty and Staff Scholarship

Agricultural activities often contaminate watersheds with excess nutrients leading to poor water quality and eutrophication. Eastern Kentucky University’s Meadowbrook Farm raises crops and livestock, contributing dissolved nutrients to the neighboring Muddy Creek watershed. Consequently, the Farm is developing methods to sequester and limit nutrient contamination.

Before phosphorous sequestration methods can be tested, the geochemistry of surface water and groundwater on the Farm need to be better understood to determine hydrological pathways. We use naturally-occurring, dissolved cations as tracers to identify the contribution of different water sources and interpret storm events.

Water samples taken from springs (groundwater), surface water, and storm …

A Brief Guide To Striped Bass Ecology & Management In Chesapeake Bay, Mary C. Fabrizio, Troy D. Tuckey, Susanna Musick

Reports

Chesapeake Bay striped bass support important recreational fisheries along the US Atlantic coast; in the late 1970s, the population of striped bass collapsed as a result of overfishing and poor water quality in rivers used for spawning and rear-ing of young. Informed by stock assessments, strict management regulations were enacted in the mid-1980s and early 1990s; these highly effective regulations resulted in the recovery of the population in 1995. A key to the successful recov-ery of the Atlantic coast striped bass was the wide range of ages of spawning females and the associated differences in spawning behavior among ages. Age …

The Future Perspective: Metabolomics In Laboratory Medicine For Inborn Errors Of Metabolism, Yana Sandlers

Chemistry Faculty Publications

Metabolomics can be described as a simultaneous and comprehensive analysis of small molecules in a biological sample. Recent technological and bioinformatics advances have facilitated large-scale metabolomic studies in many areas, including inborn errors of metabolism (IEMs). Despite significant improvements in the diagnosis and treatment of some IEMs, it is still challenging to understand how genetic variation affects disease progression and susceptibility. In addition, a search for new more personalized therapies and a growing demand for tools to monitor the long-term metabolic effects of existing therapies set the stage for metabolomics integration in preclinical and clinical studies. While targeted metabolomics approach …

Isolated Character Forms From Dated Syriac Manuscripts, Nicholas Howe, Minyue Dai, Michael Penn

Computer Science: Faculty Publications

This paper describes a set of hand-isolated character samples selected from securely dated manuscripts written in Syriac between 300 and 1300 C.E., which are being made available for research purposes. The collection can be used for a number of applications, including ground truth for character segmentation and form analysis for paleographical dating. Several applications based upon convolutional neural networks demonstrate the possibilities of the data set.

Ion Transport Across Biological Membranes By Carborane-Capped Gold Nanoparticles, Marcin P. Grzelczak, Stephen P. Danks, Robert C. Klipp, Domagoj Belic, Adnana Zaulet, Casper Kunstmann-Olsen, Dan F. Bradley, Tatsuya Tsukuda, Clara ViñAs, Francesc Teixidor, Jonathan J. Abramson, Mathias Brust

Physics Faculty Publications and Presentations

Carborane-capped gold nanoparticles (Au/carborane NPs, 2–3 nm) can act as artificial ion transporters across biological membranes. The particles themselves are large hydrophobic anions that have the ability to disperse in aqueous media and to partition over both sides of a phospholipid bilayer membrane. Their presence therefore causes a membrane potential that is determined by the relative concentrations of particles on each side of the membrane according to the Nernst equation. The particles tend to adsorb to both sides of the membrane and can flip across if changes in membrane potential require their repartitioning. Such changes can be made either with …

Onshore Wind Speed Modulates Microbial Aerosols Along An Urban Waterfront, M. Elias Drucker, Gregory D. O'Mullan, Joaquín Martínez Martínez, Andrew R. Juhl, Kathleen C. Weathers

Publications and Research

Wind blowing over aquatic and terrestrial surfaces produces aerosols, which include microbial aerosols. We studied the effect of onshore wind speeds on aerosol concentrations as well as total and culturable microbial aerosols (bacterial and viral) at an urban waterfront (New York, NY, USA). We used two distinct methods to characterize microbial aerosol responses to wind speed: A culture-based exposure-plate method measuring viable bacterial deposition near-shore (CFU accumulation rate); and a culture-independent aerosol sampler-based method measuring total bacterial and viral aerosols (cells m−3 air). While ambient coarse (>2 µm) and fine (0.3–2 µm) aerosol particle number concentrations (regulated indicators of …

Tetraquark Operators In Lattice Qcd And Exotic Flavour States In The Charm Sector, Gavin K. C. Cheung, Christopher E. Thomas, Jozef J. Dudek, Robert G. Edwards

Arts & Sciences Articles

We present a general class of operators resembling compact tetraquarks which have a range of colour-flavour-spin structures, transform irreducibly under the symmetries of the lattice and respect other relevant symmetries. These constructions are demonstrated in lattice QCD calculations with light quarks corresponding to m(pi) = 391 MeV. Using the distillation framework, correlation functions involving large bases of meson-meson and tetraquark operators are computed in the isospin-1 hidden-charm and doubly-charmed sectors, and finite-volume spectra are extracted with the variational method. We find the spectra are insensitive to the addition of tetraquark operators to the bases of meson-meson operators. For the first …

Accessing Blue Spaces: Social And Geographic Factors Structuring Familiarity With, Use Of, And Appreciation Of Urban Waterways, Melissa Haeffner, Douglas Jackson-Smith, Martin Buchert, Jordan Risley

Environmental Science and Management Faculty Publications and Presentations

Are urban waterways amenities, and if so, are there inequities in household access? While urban waterways represent a potential site for access to nature within the urban environment, there have been few studies on the accessibility and interactions with water features in particular, what we refer to as “blue spaces." This study drew on a sample of households in Northern Utah living in neighborhoods with a nearby river or canal to ask if local waterways provide positive impacts to households and if proximity to them increased the likelihood of households spending time at them and being familiar with them. We …

H0licow Vii: Cosmic Evolution Of The Correlation Between Black Hole Mass And Host Galaxy Luminosity, Xuheng Ding, Tommaso Treu, Sherry H. Suyu, Kenneth C. Wong, Takahiro Morishita, Daesong Park, Dominique Sluse, Matthew W. Auger, Adriano Agnello, Vardha Nicola Bennert, Thomas E. Collett

Physics

Strongly lensed active galactic nuclei (AGN) provide a unique opportunity to make progress in the study of the evolution of the correlation between the mass of supermassive black holes (M_BH⁠⁠) and their host galaxy luminosity (L_host). We demonstrate the power of lensing by analysing two systems for which state-of-the-art lens modelling techniques have been applied to deep Hubble Space Telescope imaging data. We use (i) the reconstructed images to infer the total and bulge luminosity of the host and (ii) published broad-line spectroscopy to estimate M_BH using the so-called virial method. We then enlarge …

Kelt-20b: A Giant Planet With A Period Of P ~ 3.5 Days Transiting The V ~ 7.6 Early A Star Hd 185603, M. B. Lund, J. E. Rodriguez, G. Zhou, B. S. Gaudi, K. G. Stassun, M. C. Johnson, A. Bieryla, R. J. Oelkers, D. J. Stevens, K. A. Collins, K. Penev, S. N. Quinn, D. W. Latham, S. Villanueva Jr., J. D. Eastman, J. F. Kielkopf, T. E. Oberst, Eric L.N. Jensen, David H. Cohen, M. D. Joner, D. C. Stephens, H. Relles, G. Corfini, J. Gregorio, R. Zambelli, G. A. Esquerdo, M. L. Calkins, P. Berlind, D. R. Ciardi, C. Dressing, R. Patel, P. Gagnon, E. Gonzales, T. G. Beatty, R. J. Siverd, J. Labadie-Bartz, R. B. Kuhn, K. D. Colón, D. James, J. Pepper, B. J. Fulton, K. K. Mcleod, C. Stockdale, S. Calchi Novati, D. L. Depoy, A. Gould, J. L. Marshall, M. Trueblood, P. Trueblood, J. A. Johnson, J. Wright, N. Mccrady, R. A. Wittenmyer, S. A. Johnson, A. Sergi, M. Wilson, D. H. Sliski

Physics & Astronomy Faculty Works

We report the discovery of KELT-20b, a hot Jupiter transiting a early A star, HD 185603, with an orbital period of days. Archival and follow-up photometry, Gaia parallax, radial velocities, Doppler tomography, and AO imaging were used to confirm the planetary nature of KELT-20b and characterize the system. From global modeling we infer that KELT-20 is a rapidly rotating ( ) A2V star with an effective temperature of K, mass of , radius of , surface gravity of , and age of . The planetary companion has a radius of , a semimajor axis of au, and a linear ephemeris …

Krijimi I Shabllonit Për Ndërtimin E Uebsajteve Lisboa Theme, Ardian Lumi

Theses and Dissertations

Numri i përdoruesve dhe i uebfaqeve në internet ka një rritje të madhe çdo ditë e më tepër. Njëra nga arsyet e kësaj rritje është sepse secili individ dëshiron të gjejë një vend dhe të identifikohet në World Wide Web. Ky vend mund të jetë i tipit të ndryshëm sikurse: Një profil në rrjete sociale, një uebfaqe personale apo një blog. Si rrjedhojë e këtyre ngjarjeve platformat si Wordpress kanë një ngritje të vazhdueshme të përdoruesve. Falë këtyre platformave numri i uebfaqeve dhe blogjeve është rritur dukshëm, duke rritur përpjekjet për një teknikë sa më efektive të zhvillimit të uebfaqeve. …

Zhvillimi I Ueb Aplikacionit Për Menaxhimin E Qendrave Të Karrierës: Ubt Campus, Bledar Dakaj

Theses and Dissertations

Ueb aplikacionet janë bërë pjesë e rëndësishme e bizneseve dhe institucioneve në përgjithësi pasi janë duke mundësuar shkëmbim dhe menaxhim të informacionit nga të gjitha vendet ku do që ndodhemi, rëndësia e ueb aplikacioneve responsive është një mundësi e mirë për tu përshtatur pajisjeve të ndryshme. Qëllimi i këtij studimi është të ofrojmë njohuri shtesë rreth praktikimit të këtyre aplikacioneve nga institucionet e arsimit të lartë, më saktësisht se si këto ueb aplikacioneve do të mund t’iu ofrojnë studenteve një ambient më të mirë për komunikim me njeri tjetrin e deri tek menaxhimi më i mirë i qendrave të karrierës …

Analizë E Teknologjisë Worldwide Interoperability For Microwave Access (Wimax) Dhe Long Term Evolution (Lte), Arton Jashari

Theses and Dissertations

Wimax dhe LTE janë dy teknologji që bëjnë transmetimin e të dhënave përmes teknologjisë wireless, siç janë video komunikimet dhe shërbime të videove. Me analizimin dhe krahasimin e këtyre dy teknologjive dhe me vlerësimin e standardeve të WiMAX dhe LTE është treguar se këto dy teknologji kanë qëllime të ngjajshme. Por, edhe pse WiMAX dhe LTE janë dy teknologji të reja për shërbime broadband të paisjeve mobile me shpejtësi të lartë, ato nuk kanë sukses të njejtë në këtë fushë. Përderisa suksesi dhe përdorimi i teknologjisë WiMAX është zbehur brenda viteve, teknologjia LTE po gjen përdorim të madh dhe ka …