Digital Commons Network^™

The Martian Boulder Automatic Recognition System, Mbars, Don R. Hood, S. F. Sholes, S. Karunatillake, C. I. Fassett, R. C. Ewing, J. Levy

Faculty Publications

Boulder-sized clasts are common on the surface of Mars, and many are sufficiently large to be resolved by the high resolution imaging science experiment (HiRISE) camera aboard the Mars reconnaissance orbiter. The size, number, and location of boulders on the surface and their spatial distribution can reveal the processes that have operated on the surface, including boulder erosion, burial, impact excavation, and other mechanisms of boulder transport and generation. However, quantitative analysis of statistically significant boulder populations, which could inform these processes, entails prohibitively laborious manual segmentation, granulometry, and morphometry measurements over large areas. Here, we develop, describe, and validate …

Validity Of An Abbreviated Individual Water Insecurity Experiences (Iwise-4) Scale For Measuring The Prevalence Of Water Insecurity In Low- And Middle-Income Countries, Hilary J. Bethanancourt, Edward A. Frongillo Jr. Ph.D., Sera L. Young

Faculty Publications

The 12-item Water Insecurity Experiences Scales provide high resolution, cross-context equivalent data on household and individual water insecurity. A 4-item, 1-minute version of the Household Water Insecurity Experiences (HWISE-4) Scale has proven useful for understanding the prevalence of household water insecurity experiences when limited resources preclude the use of the HWISE-12 Scale. Herein, we tested the validity of an analogous four-item version of the Individual Water Insecurity Experiences Scale (IWISE-4) for measuring the prevalence of individual water insecurity when limited resources prevent implementation of the IWISE-12 Scale. We used data from adults in 31 low- and middle-income countries (n …

Sensitivity Analysis, Uncertainty Quantification And Predictive Modeling Of Nuclear Energy Systems, Dan Gabriel Cacuci

Faculty Publications

No abstract provided.

Common Correlated Effects Estimation For Dynamic Heterogeneous Panels With Non-Stationary Multi-Factor Error Structures, Shiyun Cao, Qiankun Zhou

Faculty Publications

In this paper, we consider the estimation of a dynamic panel data model with non-stationary multi-factor error structures. We adopted the common correlated effect (CCE) estimation and established the asymptotic properties of the CCE and common correlated effects mean group (CCEMG) estimators, as N and T tend to infinity. The results show that both the CCE and CCEMG estimators are consistent and the CCEMG estimator is asymptotically normally distributed. The theoretical findings were supported for small samples by an extensive simulation study, showing that the CCE estimators are robust to a wide variety of data generation processes. Empirical findings suggest …

Worldviews Transformed: How God And His People Can Change Worldview, S. Joseph Kidder, Katelyn Campbell Weakley

Faculty Publications

No abstract provided.

Demonstrate Values: Behavioral Displays Of Moral Outrage As A Cue To Long-Term Mate Potential, Mitch Brown, Lucas A. Keefer, Donald F. Sacco, Faith L. Brown

Faculty Publications

Recent findings suggest that moral outrage signals trustworthiness to others, and such perceptions play a uniquely important role in identifying social opportunities. We conducted four studies (N = 870) investigating how displays of moral outrage are perceived in the specific context of mating. Results indicated participants, particularly women, found prospective mates describing outrage-signaling activism to be more desirable for long-term mating (Study 1), and this perception of desirability was similarly inferred among same-sex raters (Study 2). We further replicated findings in Study 1, while additionally considering the basis of women’s attraction toward outraged behavior through candidate mediators (Studies 3). Although …

Modelling Of Cohesive Expandable Lcms For Fractures With Large Apertures, Lu Lee, Musaab Magzoub, Arash Dahi Taleghani, Saeed Salehi, Guoqiang Li

Faculty Publications

The problem of loss circulation in geothermal wells is inherently challenging due to high temperatures, brittle rocks, and presence of abundant fractures. Because of the inherent challenges in geothermal environments, there are limitations in selecting proper lost circulation materials (LCMs). Traditional LCMs such as calcium carbonates that are commonly used in the oil and gas drilling may be softened and prone to failure during geothermal drilling. Moreover, evaluating the performance of different LCMs for geothermal drilling requires unique testing setups, which is expensive, and complicated to run due to harsh environmental conditions of geothermal systems. Herein, we present a numerical …

Li-Ion Electrode Microstructure Evolution During Drying And Calendering, Mojdeh Nikpour, Baichuan Liu, Paul Minson, Zachary Hillman, Brian A. Mazzeo, Dean R. Wheeler

Faculty Publications

The drying process of electrodes might seem to be a simple operation, but it has profound effects on the microstructure. Some unexpected changes can happen depending on the drying conditions. In prior work, we developed the multiphase-smoothed-particle (MPSP) model, which predicted a relative increase in the carbon additive and binder adjacent to the current collector during drying. This motivated us to undertake the present experimental investigation of the relationship between the drying rate and microstructure and transport properties for a typical anode and cathode. Specifically, the drying rate was controlled by means of temperature for both an NMC532 cathode and …

Effects Of Rotor-Airframe Interaction On The Aeromechanics And Wake Of A Quadcopter In Forward Flight, Denis-Gabriel Caprace, Andrew Ning, Philippe Chatelain, Grégoire Winckelmans

Faculty Publications

From small drones to large Urban Air Mobility vehicles, the market of vertical take-off and landing (VTOL) aircraft is currently booming. Modern VTOL designs feature a variety of configurations involving rotors, lifting surfaces and bluff bodies. The resulting aerodynamics are highly impacted by the interactions between those components and their wakes. This has consequences on the aircraft performance and on the downstream wake. Studying the effects of those interactions through CFD can inform the development of cheaper numerical models. In this work, we focus on the interaction between rotors and bluff bodies based on the example of a generic quadcopter …

New Equations For Hydrostatic Weighing Without Head Submersion, Jeff C. Tesch, Panayiotis Papadopoulos, Forrest Dolgener, Grant M. Tinsley

Faculty Publications

New equations were derived to predict the density of the body (DB) by hydrostatic weighing with the head above water (HWHAW). Hydrostatic weighing with the head below water (HWHBW) was the criterion for DB measurement in 90 subjects (44 M, 46 F). Head volume by immersion (HVIMM) was determined by subtracting the mass in water with the head below water (MWHBW) from the mass in water with the head above water (MWHAW), with subjects at residual lung volume. Equations were derived for head volume prediction (HVPRED) from head measurements and used to correct DB by HWHAW. Equations were also derived …

Everything I Know About The Bond Market I Learned From Litwin V.Allen An Essay (In Two Parts) For Ralph Winter, Richard A. Booth

Faculty Publications

This essay focuses on the classic 1940 case Litwin v. Allen, 25 N.Y.S.2d 667 (N.Y. Sup. Ct. 1940), in which the court ruled that directors and officers of a bank were liable for losses suffered by the bank from a transaction in which the bank bought a bond at a discounted price subject to an option permitting the seller to buy it back at the same price (up to) six months later. The price of the bond fell dramatically during the option period, the seller declined to buy it back, and the bank was left with the loss. The court …

The Boy Of Summer: The Art And Anger Of Roger Kahn, Mitchell Nathanson

Faculty Publications

No abstract provided.

Impact Of Operational And Restoration Interdependencies On Cost And Disruptive Effect In Multilayered Infrastructure Networks, Brigham A. Moore, Steven J. Schuldt, Ramana V. Grandhi, David R. Jacques

Faculty Publications

Network-based modeling and simulation of interdependent infrastructure systems has traditionally modeled 1 to 2 interdependency subtypes within a given model. Typically, different interdependency subtypes are modeled with special sets, variables, and parameters rather than integrated into the model as a standard feature. The most thorough current modeling efforts have modeled only four of the nine interdependency subtypes identified throughout academic literature. This paper presents the first model to incorporate all nine of the identified interdependency subtypes in a multiobjective mixed-integer program. The model is tested using a simulated flood event and a modified interdependent infrastructure dataset representing a medium- to …

Modeling Radiation Belt Electrons With Information Theory Informed Neural Networks, Simon Wing, Drew L. Turner, Aleksandr Y. Ukhorskiy, Jay R. Johnson, Thomas Sotirelis, Romina Nikoukar, Giuseppe Romeo

Faculty Publications

An empirical model of radiation belt relativistic electrons (μ = 560–875 MeV G−1 and I = 0.088–0.14 RE G0.5) with average energy ∼1.3 MeV is developed. The model inputs solar wind parameters (velocity, density, interplanetary magnetic field (IMF) |B|, Bz, and By), magnetospheric state parameters (SYM-H and AL), and L*. The model outputs the radiation belt electron phase space density (PSD). The model is operational from L* = 3 to 6.5. The model is constructed with neural networks assisted by information theory. Information theory is used to select the most effective and relevant solar …

The Marine Gastropod Conomurex Luhuanus (Strombidae) Has High-Resolution Spatial Vision And Eyes With Complex Retinas, Allison R. Irwin, Suzanne T. Williams, Daniel Isaac Speiser, Nicholas W. Roberts

Faculty Publications

All species within the conch snail family Strombidae possess large camera-type eyes that are surprisingly well-developed compared with those found in most other gastropods. Although these eyes are known to be structurally complex, very little research on their visual function has been conducted. Here, we use isoluminant expanding visual stimuli to measure the spatial resolution and contrast sensitivity of a strombid, Conomurex luhuanus. Using these stimuli, we show that this species responds to objects as small as 1.06 deg in its visual field. We also show that C. luhuanus responds to Michelson contrasts of 0.07, a low contrast sensitivity …

Addressing Food Insecurity: A Qualitative Study Of Undergraduate Students' Perceptions Of Food Access Resources., Amanda G. Conrad, Terezie Tolar-Peterson, Antonio J. Gardner, Tianlan Wei, Marion W. Evans

Faculty Publications

Food insecurity has emerged as a leading health care problem in the United States, impacting college students’ health, well-being, and academic performance. The aims of this study were: (1) to assess the prevalence of food insecurity, (2) to identify college students’ perceptions about food access resources, and (3) to explore students’ expressed needs from the university in improving food security status. A mixed-methods approach was used to assess the quantitative and qualitative aspects of the study aims. An online survey to gather demographic information and assess food security status using the 6-item version of the US Household Food Security Scale …

Author Correction: Comparative And Demographic Analysis Of Orang-Utan Genomes (Nature, (2011), 469, 7331, (529-533), 10.1038/Nature09687), Devin P. Locke, La Deana W. Hillier, Wesley C. Warren, Kim C. Worley, Lynne V. Nazareth, Donna M. Muzny, Shiaw Pyng Yang, Zhengyuan Wang, Asif T. Chinwalla, Pat Minx, Makedonka Mitreva, Lisa Cook, Kim D. Delehaunty, Catrina Fronick, Heather Schmidt, Lucinda A. Fulton, Robert S. Fulton, Joanne O. Nelson, Vincent Magrini, Craig Pohl, Tina A. Graves, Chris Markovic, Andy Cree, Huyen H. Dinh, Jennifer Hume, Christie L. Kovar, Gerald R. Fowler, Gerton Lunter, Stephen Meader, Andreas Heger, Chris P. Ponting, Tomas Marques-Bonet, Can Alkan

Faculty Publications

In this Article, we reported genome sequencing data from five Sumatran and five Bornean orang-utans. In re-analysing these data, Banes et al.1 found that eight of the ten samples were mislabelled, and we wish to correct the original publication according to their findings. In addition, Banes et al.1 find that one of the orang-utans that we had labelled as a male Sumatran is in fact a female Tapanuli orang-utan (an orang-utan species that was unknown at the time of publication of our original Article and that was first reported in 2017 (ref. 2)). While we here correct the original tables …

Mercury Biomagnification In A Coastal Louisiana Food Web Following The 2010 Deepwater Horizon Oil Spill, Katelyn J. Lamb, Stephen R. Midway, Rebecka L. Brasso, Paola C. López-Duarte, Matthew E. Kimball, Michael J. Polito

Faculty Publications

The estuarine environments surrounding coastal Louisiana create favorable conditions for microbially mediated mercury (Hg) methylation and subsequent bioaccumulation by biota. In 2010, the Deepwater Horizon (DWH) oil spill released large amounts of oil which, despite having low Hg concentrations, had the potential to influence methylmercury (MeHg) bioavailability in the coastal zone. To explore this possibility, we assessed Hg concentrations and trophodynamics in the coastal Louisiana food web prior to and immediately following the DWH oil spill and compared these metrics with an adjacent coastal ecosystem in the northern Gulf of Mexico. We found no differences in MeHg concentrations between oysters …

Whole Genome Association Study Of The Plasma Metabolome Identifies Metabolites Linked To Cardiometabolic Disease In Black Individuals, Usman A. Tahir, Daniel H. Katz, Julian Avila-Pachecho, Alexander G. Bick, Akhil Pampana, Jeremy M. Robbins, Zhi Yu, Zsu-Zsu Chen, Mark D. Benson, Daniel E. Cruz, Debby Ngo, Shuliang Deng, Xu Shi, Shuning Zheng, Aaron S. Eisman, Laurie Farrell, Michael E. Hall, Adolfo Correa, Russell P. Tracy, Peter Durda, Mark A. Sarzynski Ph.D., Faha, Facsm, Et. Al.

Faculty Publications

Integrating genetic information with metabolomics has provided new insights into genes affecting human metabolism. However, gene-metabolite integration has been primarily studied in individuals of European Ancestry, limiting the opportunity to leverage genomic diversity for discovery. In addition, these analyses have principally involved known metabolites, with the majority of the profiled peaks left unannotated. Here, we perform a whole genome association study of 2,291 metabolite peaks (known and unknown features) in 2,466 Black individuals from the Jackson Heart Study. We identify 519 locus-metabolite associations for 427 metabolite peaks and validate our findings in two multi-ethnic cohorts. A significant proportion of these …

Adsorption Of Helium And Hydrogen On Triphenylene And 1,3,5-Triphenylbenzene, Bergmeister Bergmeister, Kollotzek Kollotzek, Florent Calvo, Elisabeth Gruber, Fabio Zappa, Paul Scheier, Olof E. Echt

Faculty Publications

The adsorption of helium or hydrogen on cationic triphenylene (TPL, C₁₈H₁₂), a planar polycyclic aromatic hydrocarbon (PAH) molecule, and of helium on cationic 1,3,5-triphenylbenzene (TPB, C₂₄H₁₈), a propeller-shaped PAH, is studied by a combination of high-resolution mass spectrometry and classical and quantum computational methods. Mass spectra indicate that He_nTPL⁺ complexes are particularly stable if n = 2 or 6, in good agreement with the quantum calculations which show that for these sizes the helium atoms are strongly localized on either side of the central carbon ring for n = …

Improving Data-Driven Infrastructure Degradation Forecast Skill With Stepwise Asset Condition Prediction Models, Kurt R. Lamm, Justin D. Delorit, Michael N. Grussing, Steven J. Schuldt

Faculty Publications

Organizations with large facility and infrastructure portfolios have used asset management databases for over ten years to collect and standardize asset condition data. Decision makers use these data to predict asset degradation and expected service life, enabling prioritized maintenance, repair, and renovation actions that reduce asset life-cycle costs and achieve organizational objectives. However, these asset condition forecasts are calculated using standardized, self-correcting distribution models that rely on poorly-fit, continuous functions. This research presents four stepwise asset condition forecast models that utilize historical asset inspection data to improve prediction accuracy: (1) Slope, (2) Weighted Slope, (3) Condition-Intelligent Weighted Slope, and (4) …

Proteomic Profiling Platforms Head To Head: Leveraging Genetics And Clinical Traits To Compare Aptamer- And Antibody-Based Methods, Daniel H. Katz, Jeremy M. Robbins, Shuliang Deng, Usman A. Tahir, Alexander G. Bick, Akhil Pampana, Zhi Yu, Debby Ngo, Mark D. Benson, Zsu-Zsu Chen, Daniel E. Cruz, Dongxiao Shen, Yan Gao, Claude Bouchard, Mark A. Sarzynski Facsm, Adolfo Correa, Pradeep Natarajan, James G. Wilson, Robert E. Gerszten

Faculty Publications

High-throughput proteomic profiling using antibody or aptamer-based affinity reagents is used increasingly in human studies. However, direct analyses to address the relative strengths and weaknesses of these platforms are lacking. We assessed findings from the SomaScan1.3K (N = 1301 reagents), the SomaScan5K platform (N = 4979 reagents), and the Olink Explore (N = 1472 reagents) profiling techniques in 568 adults from the Jackson Heart Study and 219 participants in the HERITAGE Family Study across four performance domains: precision, accuracy, analytic breadth, and phenotypic associations leveraging detailed clinical phenotyping and genetic data. Across these studies, we show evidence …

Artificial Neural Networks And Gradient Boosted Machines Used For Regression To Evaluate Gasification Processes: A Review, Owen Sedej, Eric Mbonimpa, Trevor Sleight, Jeremy M. Slagley

Faculty Publications

Waste-to-Energy technologies have the potential to dramatically improve both the natural and human environment. One type of waste-to-energy technology that has been successful is gasification. There are numerous types of gasification processes and in order to drive understanding and the optimization of these systems, traditional approaches like computational fluid dynamics software have been utilized to model these systems. The modern advent of machine learning models has allowed for accurate and computationally efficient predictions for gasification systems that are informed by numerous experimental and numerical solutions. Two types of machine learning models that have been widely used to solve for quantitative …

Understanding Across The Senses: Cross-Modal Studies Of Cognition In Cetaceans, Jason N. Bruck, Adam A. Pack

Faculty Publications

Cross-modal approaches to the study of sensory perception, social recognition, cognition, and mental representation have proved fruitful in humans as well as in a variety of other species including toothed whales in revealing equivalencies that suggest that different sensory stimuli associated with objects or individuals may effectively evoke mental representations that are, respectively, object based or individual based. Building on established findings of structural equivalence in the form of spontaneous recognition of complex shapes across the modalities of echolocation and vision and behavior favoring identity echoic–visual cross-modal relationships over associative echoic–visual cross-modal relationships, examinations of transitive inference equivalencies from initially …

Effects Of Caffeine, Methylliberine, And Theacrine On Vigilance, Marksmanship, And Hemodynamic Responses In Tactical Personnel: A Double-Blind, Randomized, Placebo-Controlled Trial, Harry P. Cintineo, Marissa L. Bello, Alexa J. Chandler, Thomas D. Cardaci, Bridget A. Mcfadden, Shawn M. Arent

Faculty Publications

Background

Tactical athletes require fast reaction times (RT) along with high levels of vigilance and marksmanship performance. Caffeine has been shown to improve these measures but also results in increased blood pressure and jitteriness. Research on other purine alkaloids, such as methylliberine and theacrine, has suggested they do not increase blood pressure or jitteriness to the same extent, but their impact on tactical performance is unknown.

Methods

A between-subjects, randomized, placebo-controlled design was used to test the effects of placebo (PLA), 300 mg caffeine (CAF), and a combination of 150 mg caffeine, 100 mg methylliberine, and 50 mg theacrine (CMT) …

Measurement Of The Branching Fractions Of The B+ → Η′ℓ+Νℓ And B+ → Η′ℓ+Νℓ Decays With Signal-Side Only Reconstruction In The Full Q2 Range, U. Gebauer, C. Beleño, A. Frey, I. Adachi, K. Adamczyk, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, V. Babu, S. Bahinipati, P. Behera, K. Belous, J. Bennett, M. Bessner, V. Bhardwaj, B. Bhuyan, Milind Purohit, Et. Al.

Faculty Publications

The branching fractions of the decays B⁺ → ηl⁺νl and B⁺ → ηl⁺νl are measured, where l is either an electron or a muon, using a data sample of 711 fb⁻¹ containing 772 × 10⁶ BB̅ pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e⁺e⁻ collider. To reduce the dependence of the result on the form factor model, the measurement is performed over the entire q² range. The resulting branching fractions are B(B⁺ → η ℓ + ν ℓ)=(2.83 …

Measurement Of The Branching Fractions Of The B+ → Ηl+ Νl And B+ → Η0l+ Νl Decays With Signal-Side Only Reconstruction In The Full Q2 Range, U. Gebauer, C. Beleño, A. Frey, I. Adachi, K. Adamczyk, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, V. Babu, S. Bahinipati, P. Behera, K. Belous, J. Bennett, M. Bessner, V. Bhardwaj, B. Bhuyan, Milind Purohit, Et. Al.

Faculty Publications

The branching fractions of the decays B⁺ → ηl+νl and B+ → η0 lþνl are measured, where l is either an electron or a muon, using a data sample of 711 fb⁻¹ containing 772 × 10⁶ BB̅ pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e⁺e⁻ collider. To reduce the dependence of the result on the form factor model, the measurement is performed over the entire q² range. The resulting branching fractions are B(B⁺ → ηlþνl)=(2.83 ± 0.55_(stat.) ± 0.34_(syst.) )× 10 …

The Impact Of Dieting Culture Is Different Between Sexes In Endurance Athletes: A Cross-Sectional Analysis, Austin J. Graybeal, Andreas Kreutzer, Jada L. Willis, Robyn Braun-Trocchio, Kamiah Moss, Meena Shah

Faculty Publications

Background: Frequent dieting is common in athletes attempting to achieve a body composition perceived to improve performance. Excessive dieting may indicate disordered eating (DE) behaviors and can result in clinical eating disorders. However, the current nutrition patterns that underly dieting culture are underexplored in endurance athletes. Therefore, the purpose of this study was to identify the sex differences in nutrition patterns among a group of endurance athletes.

Methods: Two-hundred and thirty-one endurance athletes (females = 124) completed a questionnaire regarding their dieting patterns and associated variables.

Results: The majority of athletes did not follow a planned diet …

Perspectives Of African American Women About Barriers To Breast Cancer Prevention And Screening Practices: A Qualitative Study, Abosede F. Obikunle, Bosede Ade-Oshifogun

Faculty Publications

Breast cancer is a severe illness that often has fatal consequences. Adherence to the recommendations for breast cancer surveillance is poorly practiced among African American women. The study aimed to identify barriers to preventative screening for breast cancer among African American women (AAW) using a qualitative research design. We explored the influence of personal barriers, stereotypes, socioeconomic status, culture, attitudes, and beliefs on African American women's behavior regarding breast cancer screening. Fourteen African American women were interviewed. Data analysis was completed with Interpretative Phenomenology Approach (IPA). This study's findings demonstrated that African American women perceived the barriers to breast cancer …

Hexavalent Chromium Increases The Metabolism And Genotoxicity Of Aromatic Amine Carcinogens 4-Aminobiphenyl And Β-Naphthylamine In Immortalized Human Lung Epithelial Cells, James T.F. Wise, Raúl A. Salazar-González, Kennedy M. Walls, Mark A. Doll, Mariam R. Habil, David W. Hein

Faculty Publications

Humans are exposed to carcinogenic chemicals via occupational and environmental exposures. Common chemicals of concern that can occur in exposures together are aromatic amines (e.g., 4-aminobiphenyl [4-ABP] and β-naphthylamine [BNA]) and hexavalent chromium (Cr[VI]). Arylamine N-acetyltransferases 1 and 2 (NAT1 and NAT2) are key to the metabolism of aromatic amines and their genotoxicity. The effects of Cr(VI) on the metabolism of aromatic amines remains unknown as well as how it may affect their ensuing toxicity. The objective of the research presented here is to investigate the effects of Cr(VI) on the metabolism and genotoxicity of 4-ABP and BNA in immortalized …