Digital Commons Network^™

Aerodynamics Of Low-Rise Buildings: Large-Scale Open-Jet Testing To Address Reynolds Number Effects, Aly Mousaad Aly

Faculty Publications

Wind flow over low-rise buildings in the atmospheric boundary layer (ABL) is accompanied by some complex flow physics such as flow separation and generation of vortices in the shear layer. The uncertainties associated with such complex flow mechanisms make the case-by-case experimental or numerical investigation of buildings’ aerodynamic behavior fundamental. Engineers have aspired to replicate the full-scale real wind behavior in wind-tunnels to create more resilient infrastructures. Traditional wind-tunnel experiments struggle to accurately predict surface pressures despite being widely embraced by the structural engineering community. This limitation is attributed to the lack of large-scale turbulence and low Reynolds numbers in …

On The Computational Efficiency Of Les And Hybrid Rans-Les Models In Building Aerodynamics, Faiaz Khaled, Aly Mousaad Aly

Faculty Publications

No abstract provided.

Mobile App Privacy In Software Engineering Research: A Systematic Mapping Study, Fahimeh Ebrahimi, Miroslav Tushev, Anas Mahmoud

Faculty Publications

Context: Mobile applications (apps) have become deeply personal, constantly demanding access to privacy-sensitive information in exchange for more personalized user experiences. Such privacy-invading practices have generated major multidimensional privacy concerns among app users. Objective: The research on mobile app privacy has experienced rapid growth over the past decade. This line of research is aimed at systematically exposing the privacy practices of apps and proposing solutions to protect the privacy of mobile app users. In this paper, we conduct a systematic mapping study of this body of research. Our objectives are to a) explore trends in SE app privacy research, b) …

Mild Upgrading Of Biomass Pyrolysis Vapors Via Ex-Situ Catalytic Pyrolysis Over An Iron-Montmorillonite Catalyst, Candice R. Ellison, Dorin Boldor

Faculty Publications

Pyrolysis vapor upgrading can improve the stability of pyrolysis liquids to facilitate storage, transport, and drop in use as fuels and chemical feedstocks in existing refining infrastructure. This study investigates a low cost iron based catalyst for mild in-situ upgrading of fast pyrolysis vapors to increase the stability of pyrolysis liquid. Iron-doped montmorillonite K10 catalysts were characterized by ICP-OES, BET porosimetry, XRD, XPS, and NH3-TPD. The effect of three upgrading process parameters are evaluated by Box-Behnken experimental design using a fixed catalyst bed. Predictive model equations are developed based on response surface methodology to describe the effect of iron loading, …

Real-Time Motion Tracking Of Cognitive Baxter Robot Based On Differential Inverse Kinematics, Shaobo Li, Xingxing Zhang, Jing Yang, Qiang Bai, Jianjun Hu, Qisong Song, Zhiang Li

Faculty Publications

The tracking motion of the robot is realized based on a specific robot or relying on an expensive movement acquisition system. It has the problems of complex control procedures, lack of real-time performance, and difficulty in achieving secondary development. We propose a robot real-time tracking control method based on the control principle of differential inverse kinematics, which fuses the position and joint angle information of the robot’s actuators to realize the real-time estimation of the user’s movement during the tracking process. The motion coordinates of each joint of the robot are calculated and the coordinate conversion between man and machine …

Single-Shot Positron Annihilation Lifetime Spectroscopy Using A Liquid Scintillator, Joshua R. Machacek, Shawn Mctaggart, Larry W. Burggraf

Faculty Publications

Liquid scintillators provide a fast, single component response. However, they traditionally have a low flashpoint and high vapor pressure. We demonstrate the use of an EJ-309 scintillator (high flashpoint and low vapor pressure variant) to acquire single-shot positron annihilation lifetime spectroscopy spectra using a trap-based positron beam.

Scholarsarchive Urc Presentation May 2021, Ellen Amatangelo

Faculty Publications

Managed by the Harold B. Lee Library, ScholarsArchive is Brigham Young University’s open access institutional repository for scholarly and creative content produced by BYU faculty, staff, and students. The repository is intended to make material such as research, publications, data, and historical documents openly available to a global audience.

Speech Sound Disorders Syllabus And Unit Plan: Mini-Unit, Basic Ssd Assessment., Jenica Joseph

Faculty Publications

No abstract provided.

Association Between Dietary Inflammatory Index, Dietary Patterns, Plant-Based Dietary Index And The Risk Of Obesity, Yoko B. Wang, Nitin Shivappa, James R. Hébert Scd, Amanda J. Page, Yohannes Adama Melaku

Faculty Publications

Evidence on the association between various dietary constructs and obesity risk is limited. This study aims to investigate the longitudinal relationship between different diet indices and dietary patterns with the risk of obesity. Non-obese participants (n = 787) in the North West Adelaide Health Study were followed from 2010 to 2015. The dietary inflammatory index (DII®), plant-based dietary index (PDI) and factor-derived dietary pattern scores were computed based on food frequency questionnaire data. We found the incidence of obesity was 7.62% at the 5-year follow up. In the adjusted model, results from multivariable log-binomial logistic regression showed that a prudent …

Diet Quality And Risk Of Lung Cancer In The Multiethnic Cohort Study, Song-Yi Park, Carol J. Boushey, Yurii B. Shvetsov, Michael David Wirth Msph,Ph.D., Nitin Shivappa Ph.D., James R. Hébert Sc.D., Christopher A. Haiman, Lynee R. Wilkens, Loic Le Marchand

Faculty Publications

Diet quality, assessed by the Healthy Eating Index-2015 (HEI-2015), the Alternative Healthy Eating Index-2010 (AHEI-2010), the alternate Mediterranean Diet (aMED) score, the Dietary Approaches to Stop Hypertension (DASH) score, and the Dietary Inflammatory Index (DII®), was examined in relation to risk of lung cancer in the Multiethnic Cohort Study. The analysis included 179,318 African Americans, Native Hawaiians, Japanese Americans, Latinos, and Whites aged 45–75 years, with 5350 incident lung cancer cases during an average follow-up of 17.5 ± 5.4 years. In multivariable Cox models comprehensively adjusted for cigarette smoking, the hazard ratios (95% confidence intervals) for the highest vs. lowest …

Association Between Appendicular Skeletal Muscle Index And Leukocyte Telomere Length In Adults: A Study From National Health And Nutrition Examination Survey (Nhanes) 1999-2002, Lingzhi Chen, Nitin Shivappa Mbbs, Mph, Ph.D., Xiuxun Dong, Jinjing Ming

Faculty Publications

Background

A higher body mass index (BMI) is associated with shorter telomeres. The loss of muscle mass with aging is associated with adverse outcomes. The appendicular skeletal muscle index (ASMI) is currently used to quantify muscle mass.

Objective

We investigated the association of the ASMI with leukocyte telomere length in adult Americans.

Methods

This cross-sectional study used the National Health and Nutrition Examination Survey (NHANES) 1999–2002 dataset. Body composition was measured by dual-energy X-ray absorptiometry. Low muscle mass was defined using sex-specific thresholds of the appendicular skeletal muscle mass index (ASMI). The telomere-to-single-copy gene ratio (T/S ratio) was converted to …

Relationship Among Combat Experience, Veteran Pathology, And Pathology Of Veterans’ Intimate Partners: Factors Predicting The Pathology Of Veterans And Their Intimate Partners, Edwin A. Brennan, Nancy Carbonell, Jimmy Kijai, Dennis Waite

Faculty Publications

Introduction: Military members and their families have been part of the Global War on Terrorism since the September 11, 2001, terrorist attacks on the United States. As a result, higher levels of pathology — such as posttraumatic stress disorder, generalized anxiety disorder, and depression — are being seen. No known studies have addressed the concept of resonating pathology between combat Veterans and their intimate partners. Resonating pathology, for the purpose of this study, is when the combat Veteran and their intimate partner demonstrate the same pathology at similar levels. Methods: Veterans and their intimate partners from across the United States …

A Scapegoat Theory Of Bivens, Katherine Mims Crocker

Faculty Publications

Some scapegoats are innocent. Some warrant blame, but not the amount they are made to bear. Either way, scapegoating can allow in-groups to sidestep social problems by casting blame onto out-groups instead of confronting such problems--and the in-groups' complicity in perpetuating them--directly.

This Essay suggests that it may be productive to view the Bivens regime's rise as countering various exercises in scapegoating and its retrenchment as constituting an exercise in scapegoating. The earlier cases can be seen as responding to social structures that have scapegoated racial, economic, and other groups through overaggressive policing, mass incarceration, and inequitable government conduct more …

“Did Emmett Till Die In Vain? Organized Labor Says No!”: The United Packinghouse Workers And Civil Rights Unionism In The Mid-1950s, Matthew Nichter

Faculty Publications

Emmett Till’s mangled face is seared into our collective memory, a tragic epitome of the brutal violence that upheld white supremacy in the Jim Crow South. But Till's murder was more than just a tragedy: it also inspired an outpouring of determined protest, in which labor unions played a prominent role. The United Packinghouse Workers of America (UPWA) campaigned energetically on behalf of Emmett Till, from the stockyards of Chicago to the sugar refineries of Louisiana. Packinghouse workers petitioned, marched, and rallied to demand justice; the UPWA organized the first mass meeting addressed by Till’s mother, Mamie Bradley; and an …

An Evaluation Framework For Allied Legal Professional Programs: Assessing Improvements In Access To Justice, Andrea L. Miller, Paula Hannaford-Agor, Kathryn Genthon

Faculty Publications

The American legal system has a civil access-to-justice gap, wherein many people with civil legal issues are unable to obtain legal assistance. People with civil legal issues who cannot afford an attorney frequently must proceed through the legal system on their own. As the number of Self-Represented Litigants (SRLs) grows, several jurisdictions have investigated the creation of an additional tier of legal service providers, who can give limited legal assistance at a lower price than attorneys. For the purposes of this report, we will refer to these service providers as Allied Legal Professionals (ALPs). ALP programs can involve a wide …

Where To Draw The Line: The Endless Search For A Legal Competitive Edge, Andrew Brandt

Faculty Publications

No abstract provided.

Managing Family Stress: Coping, Adapting And Becoming Resilient, Jasmine Fraser

Faculty Publications

No abstract provided.

Roboethics In Covid-19: A Case Study In Dentistry, Wendy C. Birmingham, Yaser Maddahi, Maryam Kalvandi, Sofya Langman, Nicole Capicotto, Kourosh Zareinia

Faculty Publications

The COVID-19 pandemic has caused dramatic effects on the healthcare system, businesses, and education. In many countries, businesses were shut down, universities and schools had to cancel in-person classes, and many workers had to work remotely and socially distance in order to prevent the spread of the virus. These measures opened the door for technologies such as robotics and artificial intelligence to play an important role in minimizing the negative effects of such closures. There have been many efforts in the design and development of robotic systems for applications such as disinfection and eldercare. Healthcare education has seen a lot …

Defect Detection In Atomic Resolution Transmission Electron Microscopy Images Using Machine Learning, Philip Cho, Aihua W. Wood, Krishnamurthy Mahalingam, Kurt Eyink

Faculty Publications

Point defects play a fundamental role in the discovery of new materials due to their strong influence on material properties and behavior. At present, imaging techniques based on transmission electron microscopy (TEM) are widely employed for characterizing point defects in materials. However, current methods for defect detection predominantly involve visual inspection of TEM images, which is laborious and poses difficulties in materials where defect related contrast is weak or ambiguous. Recent efforts to develop machine learning methods for the detection of point defects in TEM images have focused on supervised methods that require labeled training data that is generated via …

Using Blade Element Momentum Methods With Gradient-Based Design Optimization, Andrew Ning

Faculty Publications

Blade element momentum methods are widely used for initial aerodynamic analysis of propellers and wind turbines. A wide variety of correction methods exist, but common to all variations, a pair of residuals are converged to ensure compatibility between the two theories. This paper shows how to rearrange the sequence of calculations reducing to a single residual. This yields the significant advantage that convergence can be guaranteed and to machine precision. Both of these considerations are particularly important for gradient- based optimization where a wide variety of atypical inputs may be explored, and where tight convergence is necessary for accurate derivative …

A Critical Review On The Development Of Ionic Liquids-Based Nanofluids As Heat Transfer Fluids For Solar Thermal Energy, Titan C. Paul, Amitav Tikadar, Rajib Mahamud, Azzam S. Salman, A.K.M. Monjur Morshed, Jamil A. Khan

Faculty Publications

In recent years, solar thermal energy (STE) has attracted energy researchers because of its higher efficacy compared to the photovoltaic solar cell. STE is one of the forms of solar energy whereby heat is transferred via a secondary medium called heat transfer fluids (HTFs). Therefore, the overall performance of STE depends on the thermophysical properties and thermal performance of the HTFs. Traditional HTFs suffer from low decomposition temperature, high melting point, and higher vapor pressure. To overcome these limitations, researchers have recently begun working on new HTFs for STE. Ionic liquids (ILs) are considered as a potential candidate for the …

“I Think I’M The Bridge”: Exploring Mentored Undergraduate Research Experiences In Critical Multicultural Education, Eric Ruiz Bybee, Erin Feinauer Whiting, Ramona Maile Cutri

Faculty Publications

Although mentored undergraduate research has been shown to deepen student engagement across various disciplines, this type of extended learning opportunity is not a prominent feature of research and practice in teacher education. Our article addresses this gap by analyzing the experiences and growth of a group of five preservice teachers engaged in a mentored undergraduate research experience in introductory critical multicultural education courses. Specifically, we examined how pre-service teachers’ personal, academic, and professional engagement with critical multicultural education is impacted when they are positioned as researchers and receive additional training outside the traditional class format. Our findings indicate that their …

Carbonized Metal-Organic Framework Cathodes For Secondary Lithium-Bromine Batteries, Benjamin B. Peterson, Evan M. Andrews, Francisco Hung, John C. Flake

Faculty Publications

Secondary lithium-bromine (Li–Br2) batteries offer cell potentials near 4 V and storage capacities over 1200 Whkg−1-LiBr. Here, we demonstrate Li–Br2 cells with two types of carbonized metal-organic frameworks (MOFs). Carbonized MIL-53(Al) electrodes show capacities of 224 mAhg−1 LiBr (at 3.4 V) and 72% capacity retention after 100 cycles, while carbonized ZIF-8 electrodes show specific capacities of 273 mAhg−1 LiBr and 88% capacity retention over 100 cycles at 1C (at 3.4 V). Surface characterization (XPS, EDS) and porosimetry indicate that the ZIF-8 derived MOF electrodes are heavily microporous with heteroatom (C–N) doping. The increased capacity and reversibility of ZIF-8 derived carbon …

Who Knew We Had This Stuff?: Collaborating To Expose Decades Of Hidden Collections Through Cataloging Before Processing, Rebecca A. Wiederhold, Matthew Leavitt

Faculty Publications

Unprocessed collections are a barrier to access that many manuscript repositories face. Our goal is to provide at least basic access to collections that have been hidden for decades. Acknowledging that our current workflow might take as long as ten years to catch up on our backlog of unprocessed collections, BYU's Harold B. Lee Library is rethinking workflows to re-emphasize user needs as a top priority. In an effort to better share resources across the library to solve this problem, catalogers are taking the first stab at archival description for backlog collections. We have developed procedures to provide a collection-level …

Implementation Of The Cognitive Apprenticeship Model For Enhancement Of Advanced Searching Skills In A Pharmacy Academia Rotation: Appendices 1-4, Hilary Jasmin Msis, Kenneth Hohmeier Pharmd, Christina Spivey Pharmd, Phd

Faculty Publications

No abstract provided.

Moiré Superlattice On The Surface Of A Topological Insulator, Jennifer Cano, Shiang Fang, J. H. Pixley, Justin H. Wilson

Faculty Publications

Twisting van der Waals heterostructures to induce correlated many body states provides a novel tuning mechanism in solid state physics. In this work, we theoretically investigate the fate of the surface Dirac cone of a three-dimensional topological insulator subject to a superlattice potential. Using a combination of diagrammatic perturbation theory, lattice model simulations, and ab initio calculations we elucidate the unique aspects of twisting a single Dirac cone with an induced moiré potential and the role of the bulk topology on the reconstructed surface band structure. We report a dramatic renormalization of the surface Dirac cone velocity as well as …

Healthy Eating In Low-Income Rural Louisiana Parishes: Formative Research For Future Social Marketing Campaigns, Linda Fergus, Richie Roberts, Denise Holston

Faculty Publications

No abstract provided.

Author Correction: Dense Sampling Of Bird Diversity Increases Power Of Comparative Genomics (Nature, (2020), 587, 7833, (252-257), 10.1038/S41586-020-2873-9), Shaohong Feng, Josefin Stiller, Yuan Deng, Joel Armstrong, Qi Fang, Andrew Hart Reeve, Duo Xie, Guangji Chen, Chunxue Guo, Brant C. Faircloth, Bent Petersen, Zongji Wang, Qi Zhou, Mark Diekhans, Wanjun Chen, Sergio Andreu-Sánchez, Ashot Margaryan, Jason Travis Howard, Carole Parent, George Pacheco, Mikkel Holger S. Sinding, Lara Puetz, Emily Cavill, Ângela M. Ribeiro, Leopold Eckhart, Jon Fjeldså, Peter A. Hosner, Robb T. Brumfield, Les Christidis, Mads F. Bertelsen, Thomas Sicheritz-Ponten, Dieter Thomas Tietze, Bruce C. Robertson

Faculty Publications

In Supplementary Table 1 of this Article, 23 samples (B10K-DU-029-32, B10K-DU-029-33, B10K-DU-029-36 to B10K-DU-029-44, B10K-DU- 029-46, B10K-DU-029-47, B10K-DU-029-49 to B10K-DU-029-53, B10K-DU- 029-75 to B10K-DU-029-77, B10K-DU-029-80, and B10K-DU-030-03; styled in boldface in the revised table) were assigned to the incorrect institution. Supplementary Table 1 has been amended to reflect the correct source institution for these samples, and associated data (tissue, museum ID/source specimen ID, site, state/province, latitude, longitude, date collected and sex) have been updated accordingly. The original table is provided as Supplementary Information to this Amendment, and the original Article has been corrected online.

Global Hyperorgan: A Platform For Telematic Musicking And Research, Randall Harlow, Mattias Petersson, Robert Ek, Federico Visi, Stefan Östersjö

Faculty Publications

The Global Hyperorgan is an intercontinental, creative space for acoustic musicking. Existing pipe organs around the world are networked for real-time, geographically-distant performance, with performers utilizing instruments and other input devices to collaborate musically through the voices of the pipes in each location. A pilot study was carried out in January 2021, connecting two large pipe organs in Piteå, Sweden, and Amsterdam, the Netherlands. A quartet of performers tested the Global Hyperorgan’s capacities for telematic musicking through a series of pieces. The concept of modularity is useful when considering the artistic challenges and possibilities of the Global Hyperorgan. We observe …

Comparable Response Of Wild Rodent Gut Microbiome To Anthropogenic Habitat Contamination, Anton Lavrinienko, Ann Hämäläinen, Rasmus Hindstrom, Eugene Tukalenko, Zbyszek Boratynski, Kati Kivisaari, Timothy Mousseau, Phillip C. Watts, Tapio Mappes

Faculty Publications

Species identity is thought to dominate over environment in shaping wild rodent gut microbiota, but it remains unknown whether the responses of host gut microbiota to shared anthropogenic habitat impacts are species-specific or if the general gut microbiota response is similar across host species. Here, we compare the influence of exposure to radionuclide contamination on the gut microbiota of four wild mouse species: Apodemus flavicollis, A. sylvaticus, A. speciosus and A. argenteus. Building on the evidence that radiation impacts bank vole (Myodes glareolus) gut microbiota, we hypothesized that radiation exposure has a general impact on rodent gut microbiota. Because we …