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Articles 1741 - 1770 of 45702
Full-Text Articles in Entire DC Network
A Temperature Tipping Point In Hypoxic Zone Size, R. Eugene Turner, Nancy N. Rabalais, Cassandra N. Glaspie
A Temperature Tipping Point In Hypoxic Zone Size, R. Eugene Turner, Nancy N. Rabalais, Cassandra N. Glaspie
Faculty Publications
Temperature increases will have ubiquitous effects on aquatic food webs, from microbes to consumers, and affect the quality and quantity of carbon flows within and between water layers. A decline in the biological pump moving carbon from surface to lower layers is anticipated. We reviewed 37 years of data on hypoxic zone size and water quality in the northern Gulf of Mexico to determine if air and bottom water temperature increases (0.5°C decade−1) are significantly related to variations in its areal size. There was no significant decline in important river water quality in the 24 years since the …
Detecting, Attributing, And Projecting Global Marine Ecosystem And Fisheries Change: Fishmip 2.0, Julia L. Blanchard, Camilla Novaglio, Olivier Maury, Cheryl S. Harrison, Colleen M. Petrik, Denisse Fierro-Arcos, Kelly Ortega-Cisneros, Andrea Bryndum-Buchholz, Tyler D. Eddy, Ryan Heneghan, Kelsey Roberts, Jacob Schewe, Daniele Bianchi, Jerome Guiet, P. Daniel Van Denderen, Juliano Palacios-Abrantes, Xiao Liu, Charles A. Stock, Yannick Rousseau, Matthias Büchner, Ezekiel O. Adekoya, Cathy Bulman, William Cheung, Villy Christensen, Marta Coll, Leonardo Capitani, Samik Datta, Elizabeth A. Fulton, Alba Fuster, Victoria Garza, Matthieu Lengaigne, Max Lindmark, Kieran Murphy
Detecting, Attributing, And Projecting Global Marine Ecosystem And Fisheries Change: Fishmip 2.0, Julia L. Blanchard, Camilla Novaglio, Olivier Maury, Cheryl S. Harrison, Colleen M. Petrik, Denisse Fierro-Arcos, Kelly Ortega-Cisneros, Andrea Bryndum-Buchholz, Tyler D. Eddy, Ryan Heneghan, Kelsey Roberts, Jacob Schewe, Daniele Bianchi, Jerome Guiet, P. Daniel Van Denderen, Juliano Palacios-Abrantes, Xiao Liu, Charles A. Stock, Yannick Rousseau, Matthias Büchner, Ezekiel O. Adekoya, Cathy Bulman, William Cheung, Villy Christensen, Marta Coll, Leonardo Capitani, Samik Datta, Elizabeth A. Fulton, Alba Fuster, Victoria Garza, Matthieu Lengaigne, Max Lindmark, Kieran Murphy
Faculty Publications
There is an urgent need for models that can robustly detect past and project future ecosystem changes and risks to the services that they provide to people. The Fisheries and Marine Ecosystem Model Intercomparison Project (FishMIP) was established to develop model ensembles for projecting long-term impacts of climate change on fisheries and marine ecosystems while informing policy at spatio-temporal scales relevant to the Inter-Sectoral Impact Model Intercomparison Project (ISIMIP) framework. While contributing FishMIP models have improved over time, large uncertainties in projections remain, particularly in coastal and shelf seas where most of the world's fisheries occur. Furthermore, previous FishMIP climate …
Qacdes: Qos-Aware Context-Sensitive Design Of Cyber-Physical Systems, Subhajit Sidhanta, Chanachok Chokwitthaya, Yimin Zhu, Supratik Mukhopadhyay
Qacdes: Qos-Aware Context-Sensitive Design Of Cyber-Physical Systems, Subhajit Sidhanta, Chanachok Chokwitthaya, Yimin Zhu, Supratik Mukhopadhyay
Faculty Publications
There is a lot of confusion and ambiguity regarding the quantification of the Quality of Service (QoS) of a system, especially for cyber-physical systems (CPS) involved in automating or controlling the operations in built environments and critical urban infrastructures, such as office buildings, factories, transportation systems, smart cities, etc. In these cases, the QoS, as experienced by human users, depends on the context in which they (i.e., humans) interact with these systems. Traditionally, the QoS of a CPS has been defined in terms of absolute metrics. Such measures are unable to take into account the variations in performance due to …
Food At Sea On The Late Antique Mediterranean, Andrew Donnelly, Justin Leidwanger
Food At Sea On The Late Antique Mediterranean, Andrew Donnelly, Justin Leidwanger
Faculty Publications
No abstract provided.
Review Of Bad Nature, Michael F. Russo
How Attorneys Can Be Quasi-Mediators, John Lande
How Attorneys Can Be Quasi-Mediators, John Lande
Faculty Publications
This distills insights from a forthcoming article, How Can You Turn Adversarial Attorneys into Quasi-Mediators? The article is a Theory Meets Practice column in CPR’s Alternatives magazine that summarizes a discussion with members of the Association of Attorney-Mediators.
Attorneys acting as quasi-mediators prefer to be cooperative and use mediation techniques but they aren’t neutral. They tailor their actions based on their clients’ preferences and the other side’s approach. Another term for quasi-mediators is “good lawyers.”
Based on the forthcoming article and the Real Practice Systems Project Menu of Mediation Checklists, this two-page article lists things that mediators can do to …
Truth In Advertising For Environmental Sustainability, Robin M. Rotman, Aidan David-Pennington
Truth In Advertising For Environmental Sustainability, Robin M. Rotman, Aidan David-Pennington
Faculty Publications
“Sustainability” is in—but what does that term mean, when applied to products, services or brands? This article explores existing Federal Trade Commission (“FTC”) oversight of “sustainable” claims in marketing, centering on the FTC’s Guidelines for the Use of Environmental Marketing Claims (often referred to as the “Green Guides”). It analyzes thousands of public comments filed in a recent FTC quasi-rulemaking docket to inform proposed revisions to the Green Guides. The article suggests that the FTC include guidance on “sustainable” claims in its next revision to the Green Guides, and further recommends that the FTC formally extend the Green Guides to …
Lethal And Sublethal Heat-Exposure Of Bed Bugs (Cimex Lectularius L.) Causes Alarm Pheromone Emission And Elicits A Movement Response In Nearby Recipients, Aaron R. Ashbrook, Jeffrey L. Feder, Gary W. Bennett, Matthew D. Ginzel, Ameya D. Gondhalekar
Lethal And Sublethal Heat-Exposure Of Bed Bugs (Cimex Lectularius L.) Causes Alarm Pheromone Emission And Elicits A Movement Response In Nearby Recipients, Aaron R. Ashbrook, Jeffrey L. Feder, Gary W. Bennett, Matthew D. Ginzel, Ameya D. Gondhalekar
Faculty Publications
Many gregarious insect species use aggregation and alarm pheromones. The bed bug, Cimex lectularius L., emits an alarm pheromone (AP), a 70/30 blend of (E)-2-hexenal and (E)-2-octenal, when threatened. Bed bugs avoid temperatures above 43 °C, which are lethal to bugs and used commercially as spatial heat treatments to manage infestations. However, the interaction of bed bug AP in heat avoidance has not been investigated. The goal of this research was to: 1) determine if bed bugs emit AP as an alarm response to heat exposure, and 2) quantify the behavioral responses of conspecifics to AP emitted by heat-exposed bed …
Tailoring Ipm Plans To Fight A Cloaked Pest: Helping Smallholder Farmers Combat The Sweetpotato Weevil In Sub-Saharan Africa, Chad A. Keyser, Frederick S. Walters, Haley Turner, Elka Armstrong, Jeff Davis, Brooke Bissinger, Brant Johnson, Agnes Alajo, Paul Musana, Joseph Odongo, Benard Yada, Milton A. Otema
Tailoring Ipm Plans To Fight A Cloaked Pest: Helping Smallholder Farmers Combat The Sweetpotato Weevil In Sub-Saharan Africa, Chad A. Keyser, Frederick S. Walters, Haley Turner, Elka Armstrong, Jeff Davis, Brooke Bissinger, Brant Johnson, Agnes Alajo, Paul Musana, Joseph Odongo, Benard Yada, Milton A. Otema
Faculty Publications
Africa accounts for a significant portion of the world’s sweetpotato production where it is widely grown as a staple crop. In sub-Saharan Africa (SSA), sweetpotato serves as an important year-round source of calories and nutrition, a form of income for smallholder and pre-commercial farmers, and is increasingly used as silage for animal feed. However, yield per hectare is considerably lower in SSA than from other regions primarily due to sweetpotato weevils (SPW, Cylas spp., Coleoptera: Brentidae). Weevil feeding causes physical damage to the root and can induce chemical responses that give the storage root a bitter taste, both of which …
Vegetation Dieback In The Mississippi River Delta Triggered By Acute Drought And Chronic Relative Sea-Level Rise, Tracy Elsey-Quirk, Austin Lynn, Michael Derek Jacobs, Rodrigo Diaz, James T. Cronin, Lixia Wang, Haosheng Huang, Dubravko Justic
Vegetation Dieback In The Mississippi River Delta Triggered By Acute Drought And Chronic Relative Sea-Level Rise, Tracy Elsey-Quirk, Austin Lynn, Michael Derek Jacobs, Rodrigo Diaz, James T. Cronin, Lixia Wang, Haosheng Huang, Dubravko Justic
Faculty Publications
Coastal wetlands are vulnerable to sea-level rise. Here, the authors use 16 years of data to correlate vegetation dieback in the Mississippi River Delta to drought-induced salt water intrusion in the summer of 2012.
Dieback And Dredge Soils Of Phragmites Australis In The Mississippi River Delta Negatively Impact Plant Biomass, Herie Lee, Rodrigo Diaz, James T. Cronin
Dieback And Dredge Soils Of Phragmites Australis In The Mississippi River Delta Negatively Impact Plant Biomass, Herie Lee, Rodrigo Diaz, James T. Cronin
Faculty Publications
Phragmites australis is exhibiting extensive dieback in the Lower Mississippi River Delta (MRD). We explored the potential for restoration of these marshes by (1) characterizing the chemical profiles of soils collected from healthy and dieback stands of P. australis and from sites recently created from dredge-disposal soils that were expected to be colonized by P. australis and (2) experimentally testing the effects of these soil types on the growth of three common P. australis lineages, Delta, Gulf and European. Soil chemical properties included Al, Ca, Cu, Fe, K, Mg, Mn, Na, P, S, Zn, % organic matter, % carbon, % …
Resilient, Environment Tolerant And Biocompatible Electroluminescent Devices With Enhanced Luminance Based On Compliant And Self-Adhesive Electrodes, Ya Lu, Yuanyuan Chen, Haoyu Sun, Fang Deng, Changtong Mei, Xinwu Xu, Qinglin Wu, Huining Xiao, Yiying Yue, Jingquan Han
Resilient, Environment Tolerant And Biocompatible Electroluminescent Devices With Enhanced Luminance Based On Compliant And Self-Adhesive Electrodes, Ya Lu, Yuanyuan Chen, Haoyu Sun, Fang Deng, Changtong Mei, Xinwu Xu, Qinglin Wu, Huining Xiao, Yiying Yue, Jingquan Han
Faculty Publications
Electroluminescent (EL) devices are of great significance for expanding the application range of optoelectronics. However, the realization of EL devices with environment-tolerance, stretchability, mechanical cycling stability, self-adhesion, biocompatibility, and high dielectric constant still remains a challenge. Herein, a type of EL device with enhanced comprehensive performances composing of a chlorinated barium titanate/phosphor/polydimethylsiloxane (Cl-BT/phosphor/PDMS) luminescent layer sandwiched between two silver nanowire-cellulose nanocrystal with II crystalline allomorph/Triton X-100 modified polydimethylsiloxane (AgNW-CNC II/TX-PDMS) electrodes fabricated through a full solution-processing strategy is proposed. Environmentally-friendly CNC II with high transmittance acts as an antioxidant, dispersant and film-former for AgNWs. The hydrophilic modification of TX to …
Prospecting During Egg Laying Informs Incubation Recess Movements Of Eastern Wild Turkeys, Nicholas W. Bakner, Erin E. Ulrey, Bret A. Collier, Michael J. Chamberlain
Prospecting During Egg Laying Informs Incubation Recess Movements Of Eastern Wild Turkeys, Nicholas W. Bakner, Erin E. Ulrey, Bret A. Collier, Michael J. Chamberlain
Faculty Publications
Background: Central place foragers must acquire resources and return to a central location after foraging bouts. During the egg laying (hereafter laying) period, females are constrained to a nest location, thus they must familiarize themselves with resources available within their incubation ranges after nest site selection. Use of prospecting behaviors by individuals to obtain knowledge and identify profitable (e.g., resource rich) locations on the landscape can impact demographic outcomes. As such, prospecting has been used to evaluate nest site quality both before and during the reproductive period for a variety of species. Methods: Using GPS data collected from female eastern …
Covid, Elite Rhetoric, And Americans’ Attitudes Toward U.S. Trade Practices With China, Dmitriy Nurullayev, Ping Xu, James Garand
Covid, Elite Rhetoric, And Americans’ Attitudes Toward U.S. Trade Practices With China, Dmitriy Nurullayev, Ping Xu, James Garand
Faculty Publications
Objectives: In this article, we consider how the COVID-19 pandemic and evaluations of Donald Trump combined to influence Americans' attitudes toward U.S. trade practices with China. We suggest that psychological factors—such as confirmation bias and transfer of grievances—influence how individuals evaluate the costs and benefits of trade. Specifically, we argue that the severity of the pandemic (reflected by both cumulative deaths and news coverage of the pandemic) and the rhetoric of (then) President Trump came together to influence Americans’ attitudes toward trade with China. Methods: To assess the COVID effect, the Trump effect, and their interaction effect on trade opinion, …
Trajectories Of Offending Over 9 Years After Youths' First Arrest: What Predicts Who Desists And Who Continues To Offend?, Elizabeth Cauffman, Jordan Beardslee, Colleen Sbeglia, Paul J. Frick, Laurence Steinberg
Trajectories Of Offending Over 9 Years After Youths' First Arrest: What Predicts Who Desists And Who Continues To Offend?, Elizabeth Cauffman, Jordan Beardslee, Colleen Sbeglia, Paul J. Frick, Laurence Steinberg
Faculty Publications
Antisocial and illegal behavior generally declines as youth approach adulthood, but there is significant individual variation in the timing of the peak and decline of offending from adolescence to young adulthood. There are two primary research questions in the present study. First, are there subgroups of youth who follow similar patterns of offending over the nine years after their first arrest? Second, what baseline factors predict which youth will follow each pattern of offending? Data were drawn from the Crossroads study, which includes a sample of racially and ethnically diverse boys who were interviewed regularly for 9 years following their …
Warming Waters Lead To Increased Habitat Suitability For Juvenile Bull Sharks (Carcharhinus Leucas), Lindsay Mullins, John Cartwright, Steven L. Dykstra, Kristine Evans, John Mareska, Philip Matich, Jeffrey D. Plumlee, Eric Sparks, J. Marcus Drymon
Warming Waters Lead To Increased Habitat Suitability For Juvenile Bull Sharks (Carcharhinus Leucas), Lindsay Mullins, John Cartwright, Steven L. Dykstra, Kristine Evans, John Mareska, Philip Matich, Jeffrey D. Plumlee, Eric Sparks, J. Marcus Drymon
Faculty Publications
Coastal ecosystems are highly vulnerable to the impacts of climate change and other stressors, including urbanization and overfishing. Consequently, distributions of coastal fish have begun to change, particularly in response to increasing temperatures linked to climate change. However, few studies have evaluated how natural and anthropogenic disturbances can alter species distributions in conjunction with geophysical habitat alterations, such as changes to land use and land cover (LU/LC). Here, we examine the spatiotemporal changes in the distribution of juvenile bull sharks (Carcharhinus leucas) using a multi-decadal fishery-independent survey of coastal Alabama. Using a boosted regression tree (BRT) modeling framework, we assess …
Nest Box-Mounted Pit Tag Readers Reveal Cryptic Recruits Of Cavity-Nesting Waterfowl In South Louisiana, Katie E. Miranda, Kevin M. Ringelman, Dylan L. Bakner
Nest Box-Mounted Pit Tag Readers Reveal Cryptic Recruits Of Cavity-Nesting Waterfowl In South Louisiana, Katie E. Miranda, Kevin M. Ringelman, Dylan L. Bakner
Faculty Publications
Black-bellied Whistling-Ducks (Dendrocygna autumnalis; BBWD) are rapidly expanding northward into the core range of the eastern Wood Duck (Aix sponsa; WODU), yet little is known about BBWD nesting ecology. Typical field methods to study cavity-nesting waterfowl (i.e., weekly nest monitoring) preclude a full understanding of important breeding information, including nest prospecting and parasitic egg laying. To address this, we used subcutaneous passive integrated transponder (PIT) tags embedded in adults and PIT tag readers mounted on nest boxes with the objective to (1) identify individuals that used nest boxes but were not physically captured on a nest, (2) quantify box visitation, …
Deep Learning Based Approaches From Semantic Point Clouds To Semantic Bim Models For Heritage Digital Twin, Xiang Pan, Qing Lin, Siyi Ye, Li Li, Li Guo, Brendan Harmon
Deep Learning Based Approaches From Semantic Point Clouds To Semantic Bim Models For Heritage Digital Twin, Xiang Pan, Qing Lin, Siyi Ye, Li Li, Li Guo, Brendan Harmon
Faculty Publications
This study focuses on the application of deep learning for transforming semantic point clouds into semantic Building Information Models (BIM) to create a Heritage Digital Twin, centering on Taoping Village, a site of historical and cultural significance in Sichuan, China. Utilizing advanced technologies such as unmanned aerial vehicles and terrestrial laser scanning, we capture detailed point cloud data of the village. A pivotal element of our methodology is the KP-SG neural network, which exhibits outstanding overall performance, particularly excelling in accurately identifying 11 categories. Among those categories, buildings and vegetation, achieves recognition rates of 81% and 83% respectively, and a …
Information Sources And Vaccination In The Covid-19 Pandemic, Nana Osei Asiamah, Paige B. Miller, Xiaoxu Yang, Wesley Shrum
Information Sources And Vaccination In The Covid-19 Pandemic, Nana Osei Asiamah, Paige B. Miller, Xiaoxu Yang, Wesley Shrum
Faculty Publications
Among the issues that remained contentious throughout the pandemic was vaccination: its efficacy, side effects, and the general reluctance of a substantial segment of the population to get vaccinated. The aim of this paper is to understand the role of health information sources in anti-vaccination sentiment and the decision to vaccinate. Regression models were used to analyze data from an online survey of adults in the United States in late 2021 (n = 10,221). The results of the study showed that: (a) information from local and national health experts had a significant positive association with getting the COVID-19 vaccine and …
On The Identification And Use Of Social Versus Nonsocial Reinforcers: A Review Of Research Practices, Samuel L. Morris, Katherine G. Bridges
On The Identification And Use Of Social Versus Nonsocial Reinforcers: A Review Of Research Practices, Samuel L. Morris, Katherine G. Bridges
Faculty Publications
Recent research has developed efficacious methods for identifying individualized social reinforcers and utilizing social reinforcers may be beneficial for several reasons. However, the relative likelihood of utilizing social versus nonsocial reinforcers in behavior-analytic research remains unclear. The aim of this study was to evaluate how likely behavior analysts are to employ social versus nonsocial reinforcers in the context of research. We pursued this aim by evaluating the types of reinforcers utilized in research published during the past 9 years in five applied behavior-analytic journals. Results suggest that researchers in applied behavior analysis have been more likely to use individualized nonsocial …
Microrna (Mirna) Profiling Of Maize Genotypes With Differential Response To Aspergillus Flavus Implies Zma-Mir156–Squamosa Promoter Binding Protein (Sbp) And Zma-Mir398/Zma-Mir394–F -Box Combinations Involved In Resistance Mechanisms, Prasad Gandham, Kanniah Rajasekaran, Christine Sickler, Harikrishnan Mohan, Matthew Gilbert, Niranjan Baisakh
Microrna (Mirna) Profiling Of Maize Genotypes With Differential Response To Aspergillus Flavus Implies Zma-Mir156–Squamosa Promoter Binding Protein (Sbp) And Zma-Mir398/Zma-Mir394–F -Box Combinations Involved In Resistance Mechanisms, Prasad Gandham, Kanniah Rajasekaran, Christine Sickler, Harikrishnan Mohan, Matthew Gilbert, Niranjan Baisakh
Faculty Publications
Maize (Zea mays), a major food crop worldwide, is susceptible to infection by the saprophytic fungus Aspergillus flavus that can produce the carcinogenic metabolite aflatoxin (AF) especially under climate change induced abiotic stressors that favor mold growth. Several studies have used “-omics” approaches to identify genetic elements with potential roles in AF resistance, but there is a lack of research identifying the involvement of small RNAs such as microRNAs (miRNAs) in maize-A. flavus interaction. In this study, we compared the miRNA profiles of three maize lines (resistant TZAR102, moderately resistant MI82, and susceptible Va35) at 8 h, 3 d, and …
Many-Body Enhancement Of High-Harmonic Generation In Monolayer Mos2, Victor Chang Lee, Lun Yue, Mette B. Gaarde, Yang Hao Chan, Diana Y. Qiu
Many-Body Enhancement Of High-Harmonic Generation In Monolayer Mos2, Victor Chang Lee, Lun Yue, Mette B. Gaarde, Yang Hao Chan, Diana Y. Qiu
Faculty Publications
Many-body effects play an important role in enhancing and modifying optical absorption and other excited-state properties of solids in the perturbative regime, but their role in high harmonic generation (HHG) and other nonlinear response beyond the perturbative regime is not well-understood. We develop here an ab initio many-body method to study nonperturbative HHG based on the real-time propagation of the non-equilibrium Green’s function with the GW self energy. We calculate the HHG of monolayer MoS2 and obtain good agreement with experiment, including the reproduction of characteristic patterns of monotonic and nonmonotonic harmonic yield in the parallel and perpendicular responses, respectively. …
Qmol-Grid : A Matlab Package For Quantum-Mechanical Simulations In Atomic And Molecular Systems, François Mauger, Cristel Chandre
Qmol-Grid : A Matlab Package For Quantum-Mechanical Simulations In Atomic And Molecular Systems, François Mauger, Cristel Chandre
Faculty Publications
The QMol-grid package provides a suite of routines for performing quantum-mechanical simulations in atomic and molecular systems, currently implemented in one spatial dimension. It supports ground- and excited-state calculations for the Schrödinger equation, density-functional theory, and Hartree–Fock levels of theory as well as propagators for field-free and field-driven time-dependent Schrödinger equation (TDSE) and real-time time-dependent density-functional theory (TDDFT), using symplectic-split schemes. The package is written using MATLAB's object-oriented features and handle classes. It is designed to facilitate access to the wave function(s) (TDSE) and the Kohn–Sham orbitals (TDDFT) within MATLAB's environment.
Periodic Gamma-Ray Modulation Of The Blazar Pg 1553+113 Confirmed By Fermi-Lat And Multiwavelength Observations, S. Abdollahi, L. Baldini, G. Barbiellini, R. Bellazzini, B. Berenji, E. Bissaldi, R. D. Blandford, R. Bonino, P. Bruel, S. Buson, R. A. Cameron, P. A. Caraveo, F. Casaburo, E. Cavazzuti, C. C. Cheung, G. Chiaro, S. Ciprini, G. Cozzolongo, P. Cristarella Orestano, S. Cutini, F. D’Ammando, N. Di Lalla, F. Dirirsa, L. Di Venere, A. Domínguez, S. J. Fegan, E. C. Ferrara, A. Fiori, Y. Fukazawa, S. Funk, P. Fusco, F. Gargano, S. Garrappa
Periodic Gamma-Ray Modulation Of The Blazar Pg 1553+113 Confirmed By Fermi-Lat And Multiwavelength Observations, S. Abdollahi, L. Baldini, G. Barbiellini, R. Bellazzini, B. Berenji, E. Bissaldi, R. D. Blandford, R. Bonino, P. Bruel, S. Buson, R. A. Cameron, P. A. Caraveo, F. Casaburo, E. Cavazzuti, C. C. Cheung, G. Chiaro, S. Ciprini, G. Cozzolongo, P. Cristarella Orestano, S. Cutini, F. D’Ammando, N. Di Lalla, F. Dirirsa, L. Di Venere, A. Domínguez, S. J. Fegan, E. C. Ferrara, A. Fiori, Y. Fukazawa, S. Funk, P. Fusco, F. Gargano, S. Garrappa
Faculty Publications
A 2.1 yr periodic oscillation of the gamma-ray flux from the blazar PG 1553+113 has previously been tentatively identified in ∼7 yr of data from the Fermi Large Area Telescope. After 15 yr of Fermi sky-survey observations, doubling the total time range, we report >7 cycle gamma-ray modulation with an estimated significance of 4σ against stochastic red noise. Independent determinations of oscillation period and phase in the earlier and the new data are in close agreement (chance probability < 0.01). Pulse timing over the full light curve is also consistent with a coherent periodicity. Multiwavelength new data from Swift X-Ray Telescope, Burst Alert Telescope, and UVOT, and from KAIT, Catalina Sky Survey, All-Sky Automated Survey for Supernovae, and Owens Valley Radio Observatory ground-based observatories as well as archival Rossi X-Ray Timing Explorer satellite-All Sky Monitor data, published optical data of Tuorla, and optical historical Harvard plates data are included in our work. Optical and radio light curves show clear correlations with the gamma-ray modulation, possibly with a nonconstant time lag for the radio flux. We interpret the gamma-ray periodicity as possibly arising from a pulsational accretion flow in a sub-parsec binary supermassive black hole system of elevated mass ratio, with orbital modulation of the supplied material and energy in the jet. Other astrophysical scenarios introduced include instabilities, disk and jet precession, rotation or nutation, and perturbations by massive stars or intermediate-mass black holes in polar orbit.
Evidence For A Shock-Compressed Magnetic Field In The Northwestern Rim Of Vela Jr. From X-Ray Polarimetry, Dmitry A. Prokhorov, Yi Jung Yang, Riccardo Ferrazzoli, Jacco Vink, Patrick Slane, Enrico Costa, Stefano Silvestri, Ping Zhou, Niccolò Bucciantini, Alessandro Di Marco, Martin C. Weisskopf, Luca Baldini, Victor Doroshenko, Steven R. Ehlert, Jeremy Heyl, Philip Kaaret, Dawoon E. Kim, Frédéric Marin, Tsunefumi Mizuno, Chi Yung Ng, Melissa Pesce-Rollins, Carmelo Sgrò, Paolo Soffitta, Douglas A. Swartz, Toru Tamagawa, Fei Xie, Iván Agudo, Lucio A. Antonelli, Matteo Bachetti, Wayne H. Baumgartner, Ronaldo Bellazzini, Stefano Bianchi, Stephen D. Bongiorno
Evidence For A Shock-Compressed Magnetic Field In The Northwestern Rim Of Vela Jr. From X-Ray Polarimetry, Dmitry A. Prokhorov, Yi Jung Yang, Riccardo Ferrazzoli, Jacco Vink, Patrick Slane, Enrico Costa, Stefano Silvestri, Ping Zhou, Niccolò Bucciantini, Alessandro Di Marco, Martin C. Weisskopf, Luca Baldini, Victor Doroshenko, Steven R. Ehlert, Jeremy Heyl, Philip Kaaret, Dawoon E. Kim, Frédéric Marin, Tsunefumi Mizuno, Chi Yung Ng, Melissa Pesce-Rollins, Carmelo Sgrò, Paolo Soffitta, Douglas A. Swartz, Toru Tamagawa, Fei Xie, Iván Agudo, Lucio A. Antonelli, Matteo Bachetti, Wayne H. Baumgartner, Ronaldo Bellazzini, Stefano Bianchi, Stephen D. Bongiorno
Faculty Publications
Synchrotron X-ray emission has been detected from nearly a dozen young supernova remnants (SNRs). X-rays of synchrotron origin exhibit linear polarization in a regular, non-randomly oriented magnetic field. The significant polarized X-ray emission from four such SNRs has already been reported on the basis of observations with the Imaging X-ray Polarimetry Explorer (IXPE). The magnetic-field structure as derived from IXPE observations is radial for Cassiopeia A, Tycho's SNR, and SN 1006, and tangential for RX J1713.7-3946. The latter together with the recent detection of a tangential magnetic field in SNR 1E 0102.2-7219 by the Australia Telescope Compact Array in the …
-Decay Half-Life Predictions With Support Vector Machine, Amir Jalili, Feng Pan, Jerry P. Draayer, Ai Xi Chen, Zhongzhou Ren
-Decay Half-Life Predictions With Support Vector Machine, Amir Jalili, Feng Pan, Jerry P. Draayer, Ai Xi Chen, Zhongzhou Ren
Faculty Publications
In this study, we investigate the application of support vector machines utilizing a radial basis function kernel for predicting nuclear -decay half-lives. Our approach integrates a comprehensive set of physics-derived features, including characteristics derived from nuclear structure, to systematically evaluate their impact on predictive accuracy. In addition to traditional parameters such as proton and neutron numbers, as well as terms based on the liquid drop model (e.g., volume, surface, Coulomb features), we incorporate decay energies and orbital angular momentum quantum numbers for both parent and daughter nuclei. Our analysis of 2232 nuclear data points demonstrates that the use of the …
Uncertainty Quantification Of Collective Nuclear Observables From The Chiral Potential Parametrization, Kevin S. Becker, Kristina D. Launey, Andreas Ekström, Tomáš Dytrych, Daniel Langr, Grigor H. Sargsyan, Jerry P. Draayer
Uncertainty Quantification Of Collective Nuclear Observables From The Chiral Potential Parametrization, Kevin S. Becker, Kristina D. Launey, Andreas Ekström, Tomáš Dytrych, Daniel Langr, Grigor H. Sargsyan, Jerry P. Draayer
Faculty Publications
We perform an uncertainty estimate of quadrupole moments and B(E2) transition rates that inform nuclear collectivity. In particular, we study the low-lying states of 6Li and 12C using the ab initio symmetry-adapted no-core-shell model. For a narrow standard deviation of approximately 1% on the low-energy constants which parametrize high-precision chiral potentials, we find output standard deviations in the collective observables ranging from approximately 3%-6%. The results mark the first step towards a rigorous uncertainty quantification of collectivity in nuclei that aims to account for all sources of uncertainty in ab initio descriptions of challenging collective and clustering observables.
Epitaxial Films And Devices Of Transparent Conducting Oxides: La:Basno3, Prosper Ngabonziza, Arnaud P. Nono Tchiomo
Epitaxial Films And Devices Of Transparent Conducting Oxides: La:Basno3, Prosper Ngabonziza, Arnaud P. Nono Tchiomo
Faculty Publications
This paper reviews recent developments in materials science and device physics of high-quality epitaxial films of the transparent perovskite La-doped barium stannate, La:BaSnO3. It presents current efforts in the synthesis science of epitaxial La:BaSnO3 films for achieving reduced defect densities and high electron mobility at room temperature. We discuss the scattering mechanisms and the route toward engineering defect-free epitaxial La:BaSnO3 heterostructures. By combining chemical surface characterization and electronic transport studies, special emphasis is laid on the proper correlation between the transport properties and the electronic band structure of La:BaSnO3 films and heterostructures. For application purposes, interesting optical properties of La:BaSnO3 …
Systematic Improvements In Transmon Qubit Coherence Enabled By Niobium Surface Encapsulation, Mustafa Bal, Akshay A. Murthy, Shaojiang Zhu, Francesco Crisa, Xinyuan You, Ziwen Huang, Tanay Roy, Jaeyel Lee, David Van Zanten, Roman Pilipenko, Ivan Nekrashevich, Andrei Lunin, Daniel Bafia, Yulia Krasnikova, Cameron J. Kopas, Ella O. Lachman, Duncan Miller, Josh Y. Mutus, Matthew J. Reagor, Hilal Cansizoglu, Jayss Marshall, David P. Pappas, Kim Vu, Kameshwar Yadavalli, Jin Su Oh, Lin Zhou, Matthew J. Kramer, Florent Lecocq, Dominic P. Goronzy, Carlos G. Torres-Castanedo, P. Graham Pritchard, Vinayak P. Dravid, James M. Rondinelli
Systematic Improvements In Transmon Qubit Coherence Enabled By Niobium Surface Encapsulation, Mustafa Bal, Akshay A. Murthy, Shaojiang Zhu, Francesco Crisa, Xinyuan You, Ziwen Huang, Tanay Roy, Jaeyel Lee, David Van Zanten, Roman Pilipenko, Ivan Nekrashevich, Andrei Lunin, Daniel Bafia, Yulia Krasnikova, Cameron J. Kopas, Ella O. Lachman, Duncan Miller, Josh Y. Mutus, Matthew J. Reagor, Hilal Cansizoglu, Jayss Marshall, David P. Pappas, Kim Vu, Kameshwar Yadavalli, Jin Su Oh, Lin Zhou, Matthew J. Kramer, Florent Lecocq, Dominic P. Goronzy, Carlos G. Torres-Castanedo, P. Graham Pritchard, Vinayak P. Dravid, James M. Rondinelli
Faculty Publications
We present a transmon qubit fabrication technique that yields systematic improvements in T1 relaxation times. We encapsulate the surface of niobium and prevent the formation of its lossy surface oxide. By maintaining the same superconducting metal and only varying the surface, this comparative investigation examining different capping materials, such as tantalum, aluminum, titanium nitride, and gold, as well as substrates across different qubit foundries demonstrates the detrimental impact that niobium oxides have on coherence times of superconducting qubits, compared to native oxides of tantalum, aluminum or titanium nitride. Our surface-encapsulated niobium qubit devices exhibit T1 relaxation times 2–5 times longer …
Metabarcoding The Arctic Ocean Helps Reveal Its Hidden Microbial Community Composition, Rafet Çağrı Öztürk, Yahya Terzi, Sheila Rodríguez-Machado, Ersan Başar, Ali Muzaffer Feyzioğlu, Dilek Ustaoğlu, Ertuğrul Ağırbaş, Prosanta Chakrabarty
Metabarcoding The Arctic Ocean Helps Reveal Its Hidden Microbial Community Composition, Rafet Çağrı Öztürk, Yahya Terzi, Sheila Rodríguez-Machado, Ersan Başar, Ali Muzaffer Feyzioğlu, Dilek Ustaoğlu, Ertuğrul Ağırbaş, Prosanta Chakrabarty
Faculty Publications
The Arctic Ocean supports a unique and dynamic microbial community, yet its composition, structure, and response to environmental shifts remain incompletely understood. In this study, 16S rRNA gene metabarcoding (targeting the V3-V4 and V4-V5 hypervariable regions) was used to assess surface water microbial diversity across 20 stations in the Barents Sea, focusing on latitudinal variations within two contrasting current systems: the West Spitsbergen Current (WSC) and the East Spitsbergen Current (ESC). Our results showed that the microbial community is dominated by three primary families—Pseudoalteromonadaceae, Moraxellaceae, and Flavobacteriaceae (14.20%). Comparative analysis of the V3-V4 and V4-V5 regions reveals that each region …