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Hydrologic Connectivity And Dynamics Of Solute Transport In A Mountain Stream: Insights From A Long-Term Tracer Test And Multiscale Transport Modeling Informed By Machine Learning, Phong V.V. Le, Saubhagya S. Rathore, Ethan T. Coon, Adam Ward, Roy Haggerty, Scott L. Painter Aug 2024

Hydrologic Connectivity And Dynamics Of Solute Transport In A Mountain Stream: Insights From A Long-Term Tracer Test And Multiscale Transport Modeling Informed By Machine Learning, Phong V.V. Le, Saubhagya S. Rathore, Ethan T. Coon, Adam Ward, Roy Haggerty, Scott L. Painter

Faculty Publications

The movement of solutes in a watershed is a complex process with multiple interactions and feedbacks across spatial and temporal scales. Modeling the dynamics of solute transport along diverse hydrologic pathways within watersheds – from hillslopes to stream channels and in and out of the hyporheic zones – is challenging but critically important, as these processes integrate and contribute to the biogeochemical functioning of the river corridor up to the river network scale. Here we use results from a long-term network-scale tracer test at the H.J. Andrews experimental forest in western Cascade Mountains, Oregon, USA to inform a multiscale framework …


Discovery Of A Strong Rotation Of The X-Ray Polarization Angle In The Galactic Burster Gx 13+1, Anna Bobrikova, Sofia V. Forsblom, Alessandro Di Marco, Fabio La Monaca, Juri Poutanen, Mason Ng, Swati Ravi, Vladislav Loktev, Jari J.E. Kajava, Francesco Ursini, Alexandra Veledina, Daniele Rogantini, Tuomo Salmi, Stefano Bianchi, Fiamma Capitanio, Chris Done, Sergio Fabiani, Andrea Gnarini, Jeremy Heyl, Philip Kaaret, Giorgio Matt, Fabio Muleri, Anagha P. Nitindala, John Rankin, Martin C. Weisskopf, Iván Agudo, Lucio A. Antonelli, Matteo Bachetti, Luca Baldini, Wayne H. Baumgartner, Ronaldo Bellazzini, Stephen D. Bongiorno, Raffaella Bonino Aug 2024

Discovery Of A Strong Rotation Of The X-Ray Polarization Angle In The Galactic Burster Gx 13+1, Anna Bobrikova, Sofia V. Forsblom, Alessandro Di Marco, Fabio La Monaca, Juri Poutanen, Mason Ng, Swati Ravi, Vladislav Loktev, Jari J.E. Kajava, Francesco Ursini, Alexandra Veledina, Daniele Rogantini, Tuomo Salmi, Stefano Bianchi, Fiamma Capitanio, Chris Done, Sergio Fabiani, Andrea Gnarini, Jeremy Heyl, Philip Kaaret, Giorgio Matt, Fabio Muleri, Anagha P. Nitindala, John Rankin, Martin C. Weisskopf, Iván Agudo, Lucio A. Antonelli, Matteo Bachetti, Luca Baldini, Wayne H. Baumgartner, Ronaldo Bellazzini, Stephen D. Bongiorno, Raffaella Bonino

Faculty Publications

Weakly magnetized neutron stars in X-ray binaries show a complex phenomenology with several spectral components that can be associated with the accretion disk, the boundary, and/or a spreading layer, a corona, and a wind. Spectroscopic information alone, however, is not enough to distinguish these components. The analysis of the timing data revealed that most of the variability, and in particular, kilohertz quasi-period oscillations, are associated with the high-energy component that corresponds to the boundary and/or spreading layer. Additional information about the nature of the spectral components, and in particular, about the geometry of the emission region, can be provided by …


New Procedure For Evaluation Of U(3) Coupling And Recoupling Coefficients, Phong Dang, Jerry P. Draayer, Feng Pan, Kevin S. Becker Aug 2024

New Procedure For Evaluation Of U(3) Coupling And Recoupling Coefficients, Phong Dang, Jerry P. Draayer, Feng Pan, Kevin S. Becker

Faculty Publications

A simple method to calculate Wigner coupling coefficients and Racah recoupling coefficients for U(3) in two group–subgroup chains is presented. While the canonical U(3)⊃U(2)⊃U(1) coupling and recoupling coefficients are applicable to any system that respects U(3) symmetry, the U(3)⊃SO(3) coupling coefficients are more specific to nuclear structure studies. This new procedure precludes the use of binomial coefficients and alternating sums which were used in the 1973 formulation of Draayer and Akiyama, and in so doing provides a faster and more accurate determination of any and all required results. The resolution of the outer multiplicity is based on the null space …


Triaxial Rotor Modes In Finite- N Boson Systems, Yu Zhang, Sheng Nan Wang, Feng Pan, Chong Qi, J. P. Draayer Aug 2024

Triaxial Rotor Modes In Finite- N Boson Systems, Yu Zhang, Sheng Nan Wang, Feng Pan, Chong Qi, J. P. Draayer

Faculty Publications

We propose an algebraic approach to elucidate the dynamic characteristics of triaxial rotor modes in nuclei by mapping a triaxial rotor Hamiltonian to the interacting boson model one within a finite-N framework. Our method unveils striking features not observed in conventional modes, exemplified by the B(E2) anomaly, characterized by B(E2;41+→21+)/B(E2;21+→01+)< 1. Using specific examples, we demonstrate that the peculiar properties of low-lying states in both neutron-rich and neutron-deficient Os nuclei can be comprehensively understood through the proposed Hamiltonian, which incorporates both rigid and soft triaxial rotor modes. This algebraic method not only offers fresh insights into triaxial dynamics but also showcases its capability in uncovering emergent exotic collective modes in nuclear structure.


Effects Of Exercise Or Metformin On Myokine Concentrations In Patients With Breast And Colorectal Cancer: A Phase Ii Multi-Centre Factorial Randomized Trial, Justin C. Brown, Guillaume Spielmann, Shengping Yang, Stephanie L.E. Compton, Lee W. Jones, Melinda L. Irwin, Jennifer A. Ligibel, Jeffrey A. Meyerhardt Aug 2024

Effects Of Exercise Or Metformin On Myokine Concentrations In Patients With Breast And Colorectal Cancer: A Phase Ii Multi-Centre Factorial Randomized Trial, Justin C. Brown, Guillaume Spielmann, Shengping Yang, Stephanie L.E. Compton, Lee W. Jones, Melinda L. Irwin, Jennifer A. Ligibel, Jeffrey A. Meyerhardt

Faculty Publications

Background: Physical activity and metformin pharmacotherapy are associated with improved clinical outcomes in breast and colorectal cancer survivors. Myokines are cytokines secreted from skeletal muscle that may mediate these associations. Methods: This hypothesis-generating analysis used biospecimens collected from a multi-centre 2 × 2 factorial randomized design of 116 patients with stage I–III breast and colorectal cancer who were randomized to 12 weeks of (1) aerobic exercise (moderate intensity titrated to 220 min/week); (2) metformin (850 mg daily for 2 weeks and then titrated to 850 mg twice per day); (3) aerobic exercise and metformin; or (4) control. Fourteen myokines were …


An Adaptive Nonlinear Least-Squares Finite Element Method For A Pucci Equation In Two Dimensions, Susanne C. Brenner, Li Yeng Sung, Zhiyu Tan Aug 2024

An Adaptive Nonlinear Least-Squares Finite Element Method For A Pucci Equation In Two Dimensions, Susanne C. Brenner, Li Yeng Sung, Zhiyu Tan

Faculty Publications

We present an adaptive nonlinear least-squares finite element method for a two dimensional Pucci equation. The efficiency of the method is demonstrated by a numerical experiment.


Boron Neutron Capture Therapy Of Cancer: Where Do We Stand Now?, Rolf F. Barth, Gong Wu, Maria Da Graca H. Vicente, John C. Grecula, Nilendu Gupta Aug 2024

Boron Neutron Capture Therapy Of Cancer: Where Do We Stand Now?, Rolf F. Barth, Gong Wu, Maria Da Graca H. Vicente, John C. Grecula, Nilendu Gupta

Faculty Publications

No abstract provided.


Anderson Localization For The Unitary Almost Mathieu Operator, Fan Yang Aug 2024

Anderson Localization For The Unitary Almost Mathieu Operator, Fan Yang

Faculty Publications

We prove Anderson localization for all Diophantine frequencies and all non-resonant phases for a model that arises from a 2D quantum walk model subject to an external magnetic field, also known as the unitary almost Mathieu operator. Our work provides the first localization results for all Diophantine frequencies in quasi-periodic quantum walk and CMV matrix setting. We also obtain sharp asymptotics of the localized eigenfunctions.


Review Of Fourth-Order Predictive Modeling And Illustrative Application To A Nuclear Reactor Benchmark. I. Typical High-Order Sensitivity And Uncertainty Analysis, Dan Gabriel Cacuci, Ruixian Fang Aug 2024

Review Of Fourth-Order Predictive Modeling And Illustrative Application To A Nuclear Reactor Benchmark. I. Typical High-Order Sensitivity And Uncertainty Analysis, Dan Gabriel Cacuci, Ruixian Fang

Faculty Publications

This work (in two parts) will review the recently developed predictive modeling methodology called “4th-BERRU-PM” and its applicability to nuclear energy systems as exemplified by an illustrative application to the Polyethylene-Reflected Plutonium (acronym: PERP) OECD/NEA reactor physics benchmark. The acronym 4th-BERRU-PM designates the “Fourth-Order Best-Estimate Results with Reduced Uncertainties Predictive Modeling” methodology, which uses the Maximum Entropy (MaxEnt) principle to incorporate fourth-order experimental and computational information, including fourth (and higher) order sensitivities of computed model responses to model parameters, while yielding best-estimate results with reduced uncertainties for the first fourth-order moments (mean values, covariance, skewness, and kurtosis) of the optimally …


Acute Pancreatitis In Individuals With Sickle Cell Disease: A Systematic Review, Chinenye R. Dike, Adefunke Dadematthews, Oluwagbemiga Dadematthews, Maisam Abu-El-Haija, Jeffrey Lebensburger, Abigail Smith, Aamer Imdad Aug 2024

Acute Pancreatitis In Individuals With Sickle Cell Disease: A Systematic Review, Chinenye R. Dike, Adefunke Dadematthews, Oluwagbemiga Dadematthews, Maisam Abu-El-Haija, Jeffrey Lebensburger, Abigail Smith, Aamer Imdad

Faculty Publications

Background/Objectives: Sickle cell disease (SCD) impacts about 100,000 people in the US. SCD increases the risk of cholelithiasis and microvascular ischemia, which could increase the risk of acute pancreatitis (AP). Abdominal pain is a common presenting symptom of AP and sickle cell vaso-occlusive crisis. The purpose of our systematic review is to estimate the prevalence and determine the severity of AP in individuals with SCD compared to the general population. Methods: Multiple electronic databases were searched. We included studies that included children and adults (population) and addressed the association of SCD (exposure) with AP (outcome) compared to the same population …


The Risk Management Of Covid-19: Lessons From Financial Economics And Financial Risk Management, Don M. Chance Aug 2024

The Risk Management Of Covid-19: Lessons From Financial Economics And Financial Risk Management, Don M. Chance

Faculty Publications

The United States had one of the worst outcomes in the management of COVID-19 risk, with a death rate in the 94th percentile of all countries. Setting aside the obvious politicized nature of COVID-19 public health recommendations and mandates, we argue that best practices in financial risk management provide parallels that could have served as valuable guidance. We demonstrate here that considerable signals were missed that would have required very little effort and would have been consistent with sound risk management. We also identify examples of misleading information such as that COVID-19 was particularly hard on the elderly. The data …


Editorial Introduction: Unveiling New Dimensions In Policy Process Theory Research, Geoboo Song, Saba Siddiki, Melissa K. Merry, Davor Mondom, Ben Galloway, Gwen Arnold, Aaron Smith-Walter, Holly L. Peterson, Creed Tumlison, Briana Huett, Heasun Choi, Nataliia Borozdina Aug 2024

Editorial Introduction: Unveiling New Dimensions In Policy Process Theory Research, Geoboo Song, Saba Siddiki, Melissa K. Merry, Davor Mondom, Ben Galloway, Gwen Arnold, Aaron Smith-Walter, Holly L. Peterson, Creed Tumlison, Briana Huett, Heasun Choi, Nataliia Borozdina

Faculty Publications

No abstract provided.


A Generalization Of The Graham-Pollak Tree Theorem To Even-Order Steiner Distance, Joshua N. Cooper, Gabrielle Tauscheck Aug 2024

A Generalization Of The Graham-Pollak Tree Theorem To Even-Order Steiner Distance, Joshua N. Cooper, Gabrielle Tauscheck

Faculty Publications

Graham and Pollak showed in 1971 that the determinant of a tree’s distance matrix depends only on its number of vertices, and, in particular, it is always nonzero. The Steiner distance of a collection of 𝑘 vertices in a graph is the fewest number of edges in any connected subgraph containing those vertices; for 𝑘 =2 , this reduces to the ordinary definition of graphical distance. Here we show that the hyperdeterminant of the 𝑘 th order Steiner distance hypermatrix is always nonzero if 𝑘 is even, extending their result beyond 𝑘 =2 . Previously, the authors showed that the …


Promoting Evidence-Based Academic And Behavioral Interventions, Joseph B. Ryan, Paul Mooney Aug 2024

Promoting Evidence-Based Academic And Behavioral Interventions, Joseph B. Ryan, Paul Mooney

Faculty Publications

No abstract provided.


Learning Nonlinear Dynamics In Synchronization Of Knowledge-Based Leader-Following Networks, Shimin Wang, Xiangyu Meng, Hongwei Zhang, Frank L. Lewis Aug 2024

Learning Nonlinear Dynamics In Synchronization Of Knowledge-Based Leader-Following Networks, Shimin Wang, Xiangyu Meng, Hongwei Zhang, Frank L. Lewis

Faculty Publications

Knowledge-based leader-following synchronization of heterogeneous nonlinear multi-agent systems is a challenging problem since the leader's dynamic information is unknown to any follower node. This paper proposes a learning-based fully distributed observer for a class of nonlinear leader systems, which can simultaneously learn the leader's dynamics and states. This class of leader dynamics is rather general and does not require a bounded Jacobian matrix. Based on this learning-based distributed observer, we further synthesize an adaptive distributed control law for solving the leader-following synchronization problem of multiple Euler–Lagrange systems subject to an uncertain nonlinear leader system. The results are illustrated by a …


Lipids To The Rescue In Pulmonary Fibrosis: Biosynthesis, Bioenergetics, Or Epigenetics?, Manas Ranjan Gartia, Victor J. Thannickal Aug 2024

Lipids To The Rescue In Pulmonary Fibrosis: Biosynthesis, Bioenergetics, Or Epigenetics?, Manas Ranjan Gartia, Victor J. Thannickal

Faculty Publications

No abstract provided.


Storm Surge Modeling In The Ai Era: Using Lstm-Based Machine Learning For Enhancing Forecasting Accuracy, Stefanos Giaremis, Noujoud Nader, Clint Dawson, Carola Kaiser, Efstratios Nikidis, Hartmut Kaiser Aug 2024

Storm Surge Modeling In The Ai Era: Using Lstm-Based Machine Learning For Enhancing Forecasting Accuracy, Stefanos Giaremis, Noujoud Nader, Clint Dawson, Carola Kaiser, Efstratios Nikidis, Hartmut Kaiser

Faculty Publications

Physics simulation results of natural processes usually do not fully capture the real world. This is caused for instance by limits in what physical processes are simulated and to what accuracy. In this work we propose and analyze the use of an LSTM-based deep learning network machine learning (ML) architecture for capturing and predicting the behavior of the systemic error for storm tide forecast models with respect to real-world water elevation observations from gauge stations during hurricane events. The overall goal of this work is to predict the systemic error of the physics model and use it to improve the …


Hyperpolarized Magnetic Resonance Imaging, Nuclear Magnetic Resonance Metabolomics, And Artificial Intelligence To Interrogate The Metabolic Evolution Of Glioblastoma, Kang Lin Hsieh, Qing Chen, Travis C. Salzillo, Jian Zhang, Xiaoqian Jiang, Pratip K. Bhattacharya, Shyan Shams Aug 2024

Hyperpolarized Magnetic Resonance Imaging, Nuclear Magnetic Resonance Metabolomics, And Artificial Intelligence To Interrogate The Metabolic Evolution Of Glioblastoma, Kang Lin Hsieh, Qing Chen, Travis C. Salzillo, Jian Zhang, Xiaoqian Jiang, Pratip K. Bhattacharya, Shyan Shams

Faculty Publications

Glioblastoma (GBM) is a malignant Grade VI cancer type with a median survival duration of only 8–16 months. Earlier detection of GBM could enable more effective treatment. Hyperpolarized magnetic resonance spectroscopy (HPMRS) could detect GBM earlier than conventional anatomical MRI in glioblastoma murine models. We further investigated whether artificial intelligence (A.I.) could detect GBM earlier than HPMRS. We developed a deep learning model that combines multiple modalities of cancer data to predict tumor progression, assess treatment effects, and to reconstruct in vivo metabolomic information from ex vivo data. Our model can detect GBM progression two weeks earlier than conventional MRIs …


The Impact Of Lutein-Loaded Poly(Lactic-Coglycolic Acid) Nanoparticles Following Topical Application: An In Vitro And In Vivo Study, Renee T. Carter, Sean Swetledge, Sara Navarro, Chin C. Liu, Nikole Ineck, Andrew C. Lewin, Fabrizio Donnarumma, Ede Bodoki, Rhett W. Stout, Carlos Astete, Jangwook P. Jung, Cristina M. Sabliov Aug 2024

The Impact Of Lutein-Loaded Poly(Lactic-Coglycolic Acid) Nanoparticles Following Topical Application: An In Vitro And In Vivo Study, Renee T. Carter, Sean Swetledge, Sara Navarro, Chin C. Liu, Nikole Ineck, Andrew C. Lewin, Fabrizio Donnarumma, Ede Bodoki, Rhett W. Stout, Carlos Astete, Jangwook P. Jung, Cristina M. Sabliov

Faculty Publications

Antioxidant therapies are of interest in the prevention and management of ocular disorders such as cataracts. Although an active area of interest, topical therapy with antioxidants for the treatment of cataracts is complicated by multiple ocular anatomical barriers, product stability, and solubility. Entrapment and delivery of antioxidants with poly(lactic-co-glycolic acid) nanoparticles is a possible solution to these challenges, however, little is known regarding their effects in vitro or in vivo. Our first aim was to investigate the impact of blank and lutein loaded PLGA nanoparticles on viability and development of reactive oxygen species in lens epithelial cells in vitro. Photo-oxidative …


Barriers And Facilitators To 24-Month Maintenance Of The Faith, Activity, And Nutrition Program In The U.S., Kelsey R. Day, John A. Bernhart Ph.D., Rd, Sara Wilcox Phd Aug 2024

Barriers And Facilitators To 24-Month Maintenance Of The Faith, Activity, And Nutrition Program In The U.S., Kelsey R. Day, John A. Bernhart Ph.D., Rd, Sara Wilcox Phd

Faculty Publications

Little is known about the barriers and facilitators to organizational maintenance of faith-based health promotion programs. This study used qualitative data (collected from 2016–2019) from pastors (n = 81) and program coordinators (n = 103) to identify barriers and facilitators to 24-month maintenance of a faith-based physical activity (PA) and healthy eating (HE) intervention in South Carolina. Barriers differed for PA versus HE: resistance to change impeded HE while church characteristics tended to impede PA. Similar themes emerged for PA and HE facilitators: healthy opportunities, church communication, and consistency. Future research should build upon this study to tailor faith-based health …


Interpregnancy Interval And Adverse Perinatal Outcomes: A Within-Individual Comparative Method, Maria Sevoyan, Marco Geraci, Edward A. Frongillo, Jihong Liu, Nansi S. Boghossian Aug 2024

Interpregnancy Interval And Adverse Perinatal Outcomes: A Within-Individual Comparative Method, Maria Sevoyan, Marco Geraci, Edward A. Frongillo, Jihong Liu, Nansi S. Boghossian

Faculty Publications

Background and Aim: Previously observed associations between interpregnancy interval (IPI) and perinatal outcomes using a between-individual method may be confounded by unmeasured maternal factors. This study aims to examine the association between IPI and adverse perinatal outcomes using within-individual comparative analyses. Methods: We studied 10,647 individuals from the National Institute of Child Health and Human Development Consecutive Pregnancies Study in Utah with ≥3 liveborn singleton pregnancies. We matched two IPIs per individual and used conditional logistic regression to examine the association between IPI and adverse perinatal outcomes, including preterm birth (PTB, < 37 weeks’ gestation), small-for-gestational-age (SGA, < 10th percentile of sex-specific birthweight for gestational age), low birthweight (LBW, < 2,500 g), and neonatal intensive care unit (NICU) admission. Point and 95% confidence interval (CI) estimates were adjusted for factors that vary across pregnancies within individuals. Results: CIs did not unequivocally support either an increase or a decrease in the odds of PTB (adjusted odds ratio [aOR]: 1.31, 95% CI: 0.87, 1.96), SGA (aOR: 0.81, 95% CI: 0.51, 1.28), LBW (aOR: 1.59, 95% CI: 0.90, 2.80), or NICU admission (aOR: 0.96, 95% CI: 0.66, 1.40) for an IPI < 6 months compared to 18–23-months IPI (reference), and neither did the CIs for the aOR of IPIs of 6–11 and 12–18 months compared to the reference. In contrast, an IPI ≥24 months was associated with increased odds of LBW (aOR: 1.66, 95% CI: 1.03, 2.66 for 24–29 months; aOR: 2.27, 95% CI: 1.21, 4.29 for 30–35 months; and aOR: 2.09, 95% CI: 1.17, 3.72 for ≥36 months). Conclusions: Using a within-individual comparative method, we did not find evidence that a short IPI compared to the recommended IPI of 18–23 months was associated with increased odds of PTB, SGA, LBW, and NICU admission. IPI ≥ 24 months was associated with increased odds of delivering an LBW infant.


Transient Heat Transfer To Rolling Or Sliding Drops On Inclined Heated Superhydrophobic Surfaces, Joseph Furner, Daniel Maynes, Brian D. Iverson, Julie Crockett Aug 2024

Transient Heat Transfer To Rolling Or Sliding Drops On Inclined Heated Superhydrophobic Surfaces, Joseph Furner, Daniel Maynes, Brian D. Iverson, Julie Crockett

Faculty Publications

The thermal transport to drops that roll or slide down heated superhydrophobic surfaces is explored. High-speed infrared imaging is performed to provide time-resolved measurement of the heat transfer to the drop. Data are obtained for drops moving along smooth hydrophobic and structured superhydrophobic surfaces. Both post and rib style structures with surface solid fractions ranging from 0.06 to 1.0 are considered. The inclination angle of the surfaces was varied from 10 deg to 25 deg, and the drop volume was varied from 12 to 40 µL. The measurements reveal that the drop speed is a strong function of both the …


Coronal Models And Detection Of The Open Magnetic Field, Eleanna Asvestari, Manuela Temmer, Ronald M. Caplan, Jon A. Linker, Stephan G. Heinemann, Rui F. Pinto, Carl J. Henney, Charles N. Arge, Mathew J. Owens, Maria S. Madjarska, Jens Pomoell, Stefan J. Hofmeister, Camilla Scolini, Evangelia Samara Aug 2024

Coronal Models And Detection Of The Open Magnetic Field, Eleanna Asvestari, Manuela Temmer, Ronald M. Caplan, Jon A. Linker, Stephan G. Heinemann, Rui F. Pinto, Carl J. Henney, Charles N. Arge, Mathew J. Owens, Maria S. Madjarska, Jens Pomoell, Stefan J. Hofmeister, Camilla Scolini, Evangelia Samara

Faculty Publications

A plethora of coronal models, from empirical to more complex magnetohydrodynamic (MHD) ones, are being used for reconstructing the coronal magnetic field topology and estimating the open magnetic flux. However, no individual solution fully agrees with coronal hole observations and in situ measurements of open flux at 1 au, as there is a strong deficit between the model and observations contributing to the known problem of the missing open flux. In this paper, we investigate the possible origin of the discrepancy between modeled and observed magnetic field topology by assessing the effect on the simulation output by the choice of …


Evaluation Of An Experimental Kelp Farm's Structural Behavior Using Regression Modelling And Response Amplitude Operators Derived From In Situ Measurements, Zachary Moscicki, M Robinson Swift, Tobias Dewhurst, Michael Macnicoll, David W. Fredriksson, Michael Chambers, Igor Tsukrov Aug 2024

Evaluation Of An Experimental Kelp Farm's Structural Behavior Using Regression Modelling And Response Amplitude Operators Derived From In Situ Measurements, Zachary Moscicki, M Robinson Swift, Tobias Dewhurst, Michael Macnicoll, David W. Fredriksson, Michael Chambers, Igor Tsukrov

Faculty Publications

An experimental kelp farming system for exposed ocean conditions was designed, deployed, planted with kelp and instrumented for evaluation of its dynamic response to ocean waves, tides, and currents. The farm featured a novel "lattice" mooring design and anchor lines and cultivation lines (horizontal lines used as kelp growth substrate) made of fiberglass rods. The farm was deployed at a site in Saco Bay, Maine with 13 m (MLLW) water depth. There the farm was exposed to waves with heights up to 5.9 m. Anchor line tension, tide and wave height time series were gathered and processed into response amplitude …


Constraining The Dense Matter Equation Of State With New Nicer Mass–Radius Measurements And New Chiral Effective Field Theory Inputs, Nathan Rutherford, Melissa Mendes, Isak Svensson, Achim Schwenk, Anna L. Watts, Kai Hebeler, Jonas Keller, Chanda Prescod-Weinstein, Devarshi Choudhury, Geert Raaijmakers, Tuomo Salmi, Patrick Timmerman, Serena Vinciguerra, Sebastien Guillot, James M. Lattimer Aug 2024

Constraining The Dense Matter Equation Of State With New Nicer Mass–Radius Measurements And New Chiral Effective Field Theory Inputs, Nathan Rutherford, Melissa Mendes, Isak Svensson, Achim Schwenk, Anna L. Watts, Kai Hebeler, Jonas Keller, Chanda Prescod-Weinstein, Devarshi Choudhury, Geert Raaijmakers, Tuomo Salmi, Patrick Timmerman, Serena Vinciguerra, Sebastien Guillot, James M. Lattimer

Faculty Publications

Pulse profile modeling of X-ray data from the Neutron Star Interior Composition Explorer is now enabling precision inference of neutron star mass and radius. Combined with nuclear physics constraints from chiral effective field theory (χEFT), and masses and tidal deformabilities inferred from gravitational-wave detections of binary neutron star mergers, this has led to a steady improvement in our understanding of the dense matter equation of state (EOS). Here, we consider the impact of several new results: the radius measurement for the 1.42 M ⊙ pulsar PSR J0437−4715 presented by Choudhury et al., updates to the masses and radii of PSR …


Covering The Care: Most Prevalent Health Conditions And Their Associated Costs Among Nh’S Insured Population – Behavioral Health And Cardiovascular Disease Top The List, Bethany Swanson, Erica Plante, Deborah Fournier Aug 2024

Covering The Care: Most Prevalent Health Conditions And Their Associated Costs Among Nh’S Insured Population – Behavioral Health And Cardiovascular Disease Top The List, Bethany Swanson, Erica Plante, Deborah Fournier

Faculty Publications

This data brief presents an analysis of available claims data from New Hampshire’s commercial, Medicaid, and Medicare insured populations. Specifically, the study identifies the top ten most prevalent health conditions, the cost of treatment for those conditions, and the overall medical cost for those with one of the identified conditions. The analysis is based on the most recent calendar year of available claims data (January – December 2022).


A Nicer View Of The Nearest And Brightest Millisecond Pulsar: Psr J0437–4715, Devarshi Choudhury, Tuomo Salmi, Serena Vinciguerra, Thomas E. Riley, Yves Kini, Anna L. Watts, Bas Dorsman, Slavko Bogdanov, Sebastien Guillot, Paul S. Ray, Daniel J. Reardon, Ronald A. Remillard, Anna V. Bilous, Daniela Huppenkothen, James M. Lattimer, Nathan Rutherford, Zaven Arzoumanian, Keith C. Gendreau, Sharon M. Morsink, Wynn C G Ho Aug 2024

A Nicer View Of The Nearest And Brightest Millisecond Pulsar: Psr J0437–4715, Devarshi Choudhury, Tuomo Salmi, Serena Vinciguerra, Thomas E. Riley, Yves Kini, Anna L. Watts, Bas Dorsman, Slavko Bogdanov, Sebastien Guillot, Paul S. Ray, Daniel J. Reardon, Ronald A. Remillard, Anna V. Bilous, Daniela Huppenkothen, James M. Lattimer, Nathan Rutherford, Zaven Arzoumanian, Keith C. Gendreau, Sharon M. Morsink, Wynn C G Ho

Faculty Publications

We report Bayesian inference of the mass, radius, and hot X-ray emitting region properties—using data from the Neutron Star Interior Composition ExploreR (NICER)—for the brightest rotation-powered millisecond X-ray pulsar, PSR J0437−4715. Our modeling is conditional on informative tight priors on mass, distance, and binary inclination obtained from radio pulsar timing using the Parkes Pulsar Timing Array (PPTA Reardon et al.), and we use NICER background models to constrain the nonsource background, cross-checking with data from XMM-Newton. We assume two distinct hot emitting regions and various parameterized hot region geometries that are defined in terms of overlapping circles while simplified, these …


On The Effect Of Driving Turbulent-Like Fluctuations On A Harris Current Sheet Configuration And The Formation Of Plasmoids, Jeffersson A. Agudelo Rueda, Yi-Hsin Liu, Kai Germaschewski, Michael Hesse, Naoki Bessho Aug 2024

On The Effect Of Driving Turbulent-Like Fluctuations On A Harris Current Sheet Configuration And The Formation Of Plasmoids, Jeffersson A. Agudelo Rueda, Yi-Hsin Liu, Kai Germaschewski, Michael Hesse, Naoki Bessho

Faculty Publications

Energy dissipation in collisionless plasmas is one of the most outstanding open questions in plasma physics. Magnetic reconnection and turbulence are two phenomena that can produce the conditions for energy dissipation. These two phenomena are closely related to each other in a wide range of plasmas. Turbulent fluctuations can emerge in critical regions of reconnection events, and magnetic reconnection can occur as a product of the turbulent cascade. In this study, we perform 2D particle-in-cell simulations of a reconnecting Harris current sheet in the presence of turbulent fluctuations to explore the effect of turbulence on the reconnection process in collisionless …


Coronal Models And Detection Of The Open Magnetic Field, Eleanna Asvestari, Manuela Temmer, Ronald M. Caplan, Jon A. Linker, Stephan G. Heinemann, Rui F. Pinto, Carl J. Henney, Charles N. Arge, Mathew J. Owens, Maria S. Madjarska, Jens Pomoell, Stefan J. Hofmeister, Camilla Scolini, Evangelia Samara Aug 2024

Coronal Models And Detection Of The Open Magnetic Field, Eleanna Asvestari, Manuela Temmer, Ronald M. Caplan, Jon A. Linker, Stephan G. Heinemann, Rui F. Pinto, Carl J. Henney, Charles N. Arge, Mathew J. Owens, Maria S. Madjarska, Jens Pomoell, Stefan J. Hofmeister, Camilla Scolini, Evangelia Samara

Faculty Publications

A plethora of coronal models, from empirical to more complex magnetohydrodynamic (MHD) ones, are being used for reconstructing the coronal magnetic field topology and estimating the open magnetic flux. However, no individual solution fully agrees with coronal hole observations and in situ measurements of open flux at 1 au, as there is a strong deficit between the model and observations contributing to the known problem of the missing open flux. In this paper, we investigate the possible origin of the discrepancy between modeled and observed magnetic field topology by assessing the effect on the simulation output by the choice of …


Evaluation Of An Experimental Kelp Farm's Structural Behavior Using Regression Modelling And Response Amplitude Operators Derived From In Situ Measurements, Zachary Moscicki, M Robinson Swift, Tobias Dewhurst, Michael Macnicoll, David W. Fredriksson, Michael Chambers, Igor Tsukrov Aug 2024

Evaluation Of An Experimental Kelp Farm's Structural Behavior Using Regression Modelling And Response Amplitude Operators Derived From In Situ Measurements, Zachary Moscicki, M Robinson Swift, Tobias Dewhurst, Michael Macnicoll, David W. Fredriksson, Michael Chambers, Igor Tsukrov

Faculty Publications

An experimental kelp farming system for exposed ocean conditions was designed, deployed, planted with kelp and instrumented for evaluation of its dynamic response to ocean waves, tides, and currents. The farm featured a novel "lattice" mooring design and anchor lines and cultivation lines (horizontal lines used as kelp growth substrate) made of fiberglass rods. The farm was deployed at a site in Saco Bay, Maine with 13 m (MLLW) water depth. There the farm was exposed to waves with heights up to 5.9 m. Anchor line tension, tide and wave height time series were gathered and processed into response amplitude …