2,941 results on '"J. Benson"'
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2. Exploring the Perspectives of Black Male Students at an HBCU in Rural Mississippi and the Role Non-Cognitive Factors within a First-Year Experience Program Play in Their Continued Enrollment
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Billy J. Benson
- Abstract
Retention and graduation rates are declining nationwide but are exceptionally low for Black men. Extant research substantiates that various influences contribute to a student's ability to persist to graduation. Apart from the positive impact of HBCUs on educational outcomes for Black students, empirical research highlights that enrollment, campus engagement, retention, success, and graduation are problematic (Palmer et al., 2013). Many factors--academic and non-cognitive--affect a student's ability to persist to graduation (Bosco, 2021). This problem of practice (PoP) explores the perspectives of Black male students at an HBCU in rural Mississippi and the role non-cognitive factors within a first-year experience program play in their continued enrollment. Institutions of higher learning, not only HBCUs, should focus on the student experience, including non-cognitive experiences, to capitalize on their ability to increase student retention and persistence (Shorette & Palmer, 2015). This dissertation concentrates on non-cognitive tenets and how Black males use these traits to reach educational goals. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]
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- 2024
3. Cranial osteology and neuroanatomy of the late Permian reptile Milleropsis pricei and implications for early reptile evolution
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Xavier A. Jenkins, Roger B. J. Benson, David P. Ford, Claire Browning, Vincent Fernandez, Elizabeth Griffiths, Jonah Choiniere, and Brandon R. Peecook
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osteology ,neuroanatomy ,late Permian ,Reptilia ,Science - Abstract
Millerettidae are a group of superficially lizard-like Permian stem reptiles originally hypothesized as relevant to the ancestry of the reptile crown group, and particularly to lepidosaurs and archosaurs. Since the advent of cladistics, millerettids have typically been considered to be more distant relatives of crown reptiles as the earliest-diverging parareptiles and therefore outside of ‘Eureptilia’. Despite this cladistic consensus, some conspicuous features of millerettid anatomy invite reconsideration of their relationships. We provide a detailed description of the late Permian millerettid Milleropsis pricei using synchrotron X-ray phase-contrast micro-computed tomography focusing on the cranial anatomy of three individuals known from a burrow aggregation. Our data reveal a suite of neuroanatomical features Milleropsis shares with neodiapsids that are absent both in other ‘parareptiles’ and in early diverging groups of ‘eureptiles’. Traits shared between Milleropsis and neodiapsids include: the presence of a tympanic emargination on the quadrate, quadratojugal and squamosal, the loss of epipterygoid contribution to the basicranial articulation suggesting a more kinetic palatoquadrate, the absence of a sphenethmoid and the pathway of the abducens nerve through the braincase. Our findings suggest that the early reptile neurocranium, a region poorly sampled in phylogenetic analyses due to relative visual inaccessibility and poor preservation, has the potential to inform the phylogenetic relationships of early reptiles.
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- 2025
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4. Embryonic heart rate is higher in species that experience greater nest predation risk during incubation
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Alexander J. Di Giovanni, Todd M. Jones, Thomas J. Benson, and Michael P. Ward
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developmental rate ,embryonic development ,embryonic heart rate ,incubation behavior ,nest predation risk ,reproductive success ,Ecology ,QH540-549.5 - Abstract
Abstract Avian eggs develop outside of the female body, and therefore embryonic development is subject to multiple internal (physiological) and external (ecological) factors. Embryonic developmental rate has important consequences for survival. Within species, embryos that develop too quickly often experience deformities, disorders, or mortality, while embryos that develop slowly risk inviability and increase the time they are exposed to various sources of mortality in the nest. These contrasting forces may lead to interspecific variation in developmental rates. We investigated potential factors affecting embryonic heart rate (EHR), a proxy of development, across 14 passerine species in the field. More specifically, we investigated if nest predation risk, clutch size, seasonality, and egg volume influenced EHR. From previous research, we expected, and found, that EHR was positively associated with embryonic age and egg temperature. Species with greater nest predation risk had higher EHR, shorter incubation periods, and lower nest temperature variance. EHR increased as the season progressed and with egg volume, while EHR declined with clutch size. Bird species exhibit varying strategies to increase nestling and fledgling survival in response to predation risk, and these results suggest that variation in embryonic development may be related to species‐specific differences in nest predation risk.
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- 2024
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5. Accessibility, Relevance, and Impact of a Symptom Monitoring Tool for Home Hospice Care: Theory Elaboration and Qualitative Assessment
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Karla T Washington, Debra Parker Oliver, Allison K Donehower, Patrick White, Jacquelyn J Benson, Patrick G Lyons, and George Demiris
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Medical technology ,R855-855.5 - Abstract
BackgroundEarly users found Engagement and Visualization to Improve Symptoms in Oncology Care (ENVISION), a web-based application designed to improve home management of hospice patients’ symptoms and support patients’ and family caregivers’ well-being, to be generally useful and easy to use. However, they also raised concerns about potential challenges users with limited technological proficiency might experience. ObjectiveWe sought to concurrently accomplish two interrelated study aims: (1) to develop a conceptual framework of digital inclusivity for health information systems and (2) to apply the framework in evaluating the digital inclusivity of the ENVISION application. MethodsWe engaged ENVISION users (N=34) in a qualitative study in which data were collected via direct observation, think-aloud techniques, and responses to open-ended queries. Data were analyzed via theory elaboration and basic qualitative description. ResultsAccessibility, relevance, and impact were identified as 3 essential considerations in evaluating a health system’s digital inclusivity. Study findings generally supported ENVISION’s digital inclusivity, particularly concerning its perceived relevance to the work of family caregivers and hospice clinicians and its potentially positive impact on symptom management and quality of life. Limitations to ENVISION’s digital inclusivity centered around issues of accessibility, particularly operability among individuals with limited technological knowledge and skills. ConclusionsThe Accessibility, Relevance, and Impact conceptual framework of digital inclusivity for health information systems can help identify opportunities to strengthen the digital inclusivity of tools, such as ENVISION, intended for use by a broad and diverse range of users.
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- 2024
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6. LATIS: Constraints on the Galaxy–Halo Connection at z ∼ 2.5 from Galaxy–Galaxy and Galaxy–Lyα Clustering
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Andrew B. Newman, Mahdi Qezlou, Nima Chartab, Gwen C. Rudie, Guillermo A. Blanc, Simeon Bird, Andrew J. Benson, Daniel D. Kelson, and Brian C. Lemaux
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- 2024
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7. Dynamic, multi‐scale analyses indicate site‐ and landscape‐level forest cover drive Yellow‐billed and Black‐billed Cuckoo interannual turnover
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Claire A. Johnson and Thomas J. Benson
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Black‐billed Cuckoo ,habitat use ,multi‐scale ,occupancy dynamics ,turnover ,Yellow‐billed Cuckoo ,Ecology ,QH540-549.5 - Abstract
Abstract Studies of habitat use in breeding birds often assume species have relatively stable breeding distributions. Some species, however, display considerable year‐to‐year variability, complicating efforts to determine suitable or preferred habitats. After returning to their breeding range, Black‐billed Cuckoos (Coccyzus erythropthalmus) and Yellow‐billed Cuckoos (C. americanus) are thought to range widely before nesting, resulting in high rates of interannual breeding‐site turnover, potentially contributing to conflicting habitat associations found in past studies. However, difficulty detecting these rare and declining species could lead to overinflated estimates of interannual turnover. Using broadcast surveys to increase detection probability, we collected detection/non‐detection data in 2019 and 2020 at 41 publicly owned sites in Illinois and performed a dynamic, multi‐scale occupancy analysis for each species to separate detection probability from potential interannual turnover and determine landscape and small‐scale variables driving habitat use and occupancy dynamics. We found strong support for interannual turnover for both species based on poor performance of non‐dynamic models and variation in estimated annual occupancy (20% and 21% increase between years for Black‐billed and Yellow‐billed Cuckoos, respectively). Black‐billed Cuckoos persisted at sites with less forest in the surrounding landscape and used areas with denser understory vegetation. Yellow‐billed Cuckoos colonized sites with greater canopy cover, avoided developed landscapes, and used areas with a shorter subcanopy layer. The dynamic nature of habitat use in these two cuckoo species suggests the importance of coordinating management and conservation across a broader spatial scale. Managing for larger patches of dense shrubs in less forested landscapes would benefit Black‐billed Cuckoos while Yellow‐billed cuckoos would benefit from management creating forested areas with open understories in less‐developed landscapes.
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- 2024
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8. Chassis-based fiber-coupled optical probe design for reproducible quantitative diffuse optical spectroscopy measurements.
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Giselle C Matlis, Qihuang Zhang, Emilie J Benson, M Katie Weeks, Kristen Andersen, Jharna Jahnavi, Alec Lafontant, Jake Breimann, Thomas Hallowell, Yuxi Lin, Daniel J Licht, Arjun G Yodh, Todd J Kilbaugh, Rodrigo M Forti, Brian R White, Wesley B Baker, Rui Xiao, and Tiffany S Ko
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Medicine ,Science - Abstract
Advanced optical neuromonitoring of cerebral hemodynamics with hybrid diffuse optical spectroscopy (DOS) and diffuse correlation spectroscopy (DCS) methods holds promise for non-invasive characterization of brain health in critically ill patients. However, the methods' fiber-coupled patient interfaces (probes) are challenging to apply in emergent clinical scenarios that require rapid and reproducible attachment to the head. To address this challenge, we developed a novel chassis-based optical probe design for DOS/DCS measurements and validated its measurement accuracy and reproducibility against conventional, manually held measurements of cerebral hemodynamics in pediatric swine (n = 20). The chassis-based probe design comprises a detachable fiber housing which snaps into a 3D-printed, circumferential chassis piece that is secured to the skin. To validate its reproducibility, eight measurement repetitions of cerebral tissue blood flow index (BFI), oxygen saturation (StO2), and oxy-, deoxy- and total hemoglobin concentration were acquired at the same demarcated measurement location for each pig. The probe was detached after each measurement. Of the eight measurements, four were acquired by placing the probe into a secured chassis, and four were visually aligned and manually held. We compared the absolute value and intra-subject coefficient of variation (CV) of chassis versus manual measurements. No significant differences were observed in either absolute value or CV between chassis and manual measurements (p > 0.05). However, the CV for BFI (mean ± SD: manual, 19.5% ± 9.6; chassis, 19.0% ± 10.8) was significantly higher than StO2 (manual, 5.8% ± 6.7; chassis, 6.6% ± 7.1) regardless of measurement methodology (p
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- 2024
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9. Water depth influences survival and predator‐specific patterns of nest loss in three secretive marsh bird species
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Stephanie M. Schmidt, Auriel M. V. Fournier, Joshua M. Osborn, and Thomas J. Benson
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marsh bird ,nest predation ,nest survival ,water depth ,wetland management ,Ecology ,QH540-549.5 - Abstract
Abstract Wetlands have become increasingly rare in the United States, negatively influencing wetland‐dependent birds, and many remaining wetlands are intensively managed through seasonal dewatering mimicking historic flood pulses during spring and summer. However, water around nests may provide protection from terrestrial predators, and lowering water levels during the breeding season of wetland birds may increase predation risk and exacerbate marsh bird population declines. Understanding interactions between water depth, nesting marsh birds, and nest predators is critical to aid managers in developing a multi‐species management approach in emergent wetlands. During the 2020 and 2021 breeding seasons, we examined nest survival of 148 marsh bird nests (American Coot, Fulica americana, n = 1; Common Gallinule, Gallinula galeata, n = 64; and Least Bittern; Ixobrychus exilis, n = 83) and installed cameras at 78 nests to identify predators at a large, restored floodplain wetland in Illinois where the primary management technique is seasonal water removal to stimulate germination of moist soil plants. We found nest predation of, and abandonment by, Least Bittern and Common Gallinule were related to shallower water, and early season, high volume dewatering. Least Bitterns nested more commonly along wetland edges and nests farther from the shore were more likely to survive. Similarly, we found mammalian depredation of nests and nest abandonment decreased when deeper water was present around nests. Alternatively, snake predation was observed earlier in the year prior to water removal from inundated emergent vegetation. Our results demonstrate water depth may be an important deterrent of nest predators, especially mammals, during the breeding season. Further, we recommend managers delay dewatering until after the nesting season at sites where management for conservation‐priority marsh birds is a focus.
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- 2023
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10. The Treasury and when-issued markets
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Durham, J. Benson, primary and Perli, Roberto, additional
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- 2023
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11. A simulation-based model studying monoethanolamine and aprotic heterocyclic anion ionic liquid (AHA-IL) mixtures for carbon capture.
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Adhish Chandra Saketh Madugula, Clayton Jeffryes, James Henry, John Gossage, and Tracy J. Benson
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- 2024
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12. Devouring the Centaurus A Satellites: Modeling Dwarf Galaxies with Galacticus
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Sachi Weerasooriya, Mia Sauda Bovill, Matthew A. Taylor, Andrew J. Benson, and Cameron Leahy
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Galaxy evolution ,N-body simulations ,Dwarf galaxies ,Galaxy formation ,Astrophysics ,QB460-466 - Abstract
For the first time, systematic studies of dwarf galaxies are being conducted throughout the Local Volume, including the dwarf satellites of the nearby giant elliptical galaxy Centaurus A (NGC 5128). Given Centaurus A's mass (roughly 10 times larger than that of the Milky Way), AGN activity, and recent major mergers, investigating the dwarf galaxies of Centaurus A and their star formation physics is imperative. However, simulating the faintest dwarfs around a galaxy of Centaurus A's mass with sufficient resolution in a hydrodynamic simulation is computationally expensive and currently infeasible. In this study, we seek to reproduce the properties of Centaurus A dwarfs using the semianalytic model Galacticus to model dwarfs within a 700 kpc region around Centaurus A, corresponding approximately to its splashback radius. We investigate the effects of host halo mass and environment and predict observable properties of Centaurus A dwarfs using astrophysical prescriptions and parameters previously tuned to match properties of the Milky Way’s satellite galaxies. This approach allows us to approximately replicate cumulative luminosity functions, and luminosity–metallicity and luminosity–half-light-radii relations observed in the Centaurus A satellites. We provide predictions for the velocity dispersions, and star formation histories of Centaurus A dwarfs. The agreement between our predicted star formation histories for Centaurus A dwarfs and those of the Milky Way dwarfs implies the presence of universal processes governing star formation in dwarf galaxies. Overall, our findings shed light on the star formation physics of dwarf galaxies in the Centaurus A system, revealing insights into their properties and dependence on the host environment.
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- 2024
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13. Reconstructed evolutionary patterns for crocodile-line archosaurs demonstrate impact of failure to log-transform body size data
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Roger B. J. Benson, Pedro Godoy, Mario Bronzati, Richard J. Butler, and William Gearty
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Biology (General) ,QH301-705.5 - Published
- 2022
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14. Mitral Valve Echodensities in a Young-Adult Female with Relapsing Polychondritis, Transiently Positive Lupus Anticoagulant, and Systemic Embolism
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Michael C. Sauer, Vikram Sharma, Jennifer L. M. Strouse, Ramzi El Accaoui, and Christopher J. Benson
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Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background. Valvular strands seen on echocardiography carry a wide differential diagnosis and may not always have a clear etiology despite taking clinical context into account. The decision of whether to provide anticoagulation for these lesions can be challenging. Case Presentation. A young adult female with an extensive rheumatologic history involving relapsing polychondritis and positive lupus anticoagulant presents to the emergency department with a discolored and painful right toe, as well as right auricular pain and swelling. Initial work-up revealed a possible splenic infarct, vasculitis of the right lower extremity, and mitral valve echodensities on echocardiography, without evidence of infective endocarditis. Due to concern that nonbacterial thrombotic endocarditis may be the cause of the patient’s thromboembolic event, her valvular lesions were treated with low molecular weight heparin while awaiting serial imaging. When follow-up echocardiography showed no change in the size of her mitral valve lesions, which would be most consistent with Lambl’s excrescences, the care team still faced a decision about which long-term anticoagulation to prescribe. This patient of childbearing age wished to avoid the teratogenicity and long-term monitoring associated with warfarin therapy. Although warfarin was the preferred agent for the patient’s rheumatologic comorbidities, she elected to receive enoxaparin therapy for long-term thromboembolism prophylaxis. Conclusions. Even when accounting for clinical context, valvular lesions seen on echocardiography often have uncertain etiology and may require time and serial imaging to determine which treatment to pursue. When long-term anticoagulation is provided for females of childbearing age, shared decision-making with consideration of the patient’s personal priorities and comorbidities is essential.
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- 2023
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15. Diffuse Optical Monitoring of Cerebral Hemodynamics and Oxygen Metabolism during and after Cardiopulmonary Bypass: Hematocrit Correction and Neurological Vulnerability
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Emilie J. Benson, Danielle I. Aronowitz, Rodrigo M. Forti, Alec Lafontant, Nicolina R. Ranieri, Jonathan P. Starr, Richard W. Melchior, Alistair Lewis, Jharna Jahnavi, Jake Breimann, Bohyun Yun, Gerard H. Laurent, Jennifer M. Lynch, Brian R. White, J. William Gaynor, Daniel J. Licht, Arjun G. Yodh, Todd J. Kilbaugh, Constantine D. Mavroudis, Wesley B. Baker, and Tiffany S. Ko
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hemoconcentration ,cardiopulmonary bypass ,cerebral hemodynamics ,mild hypothermia ,diffuse optics ,Microbiology ,QR1-502 - Abstract
Cardiopulmonary bypass (CPB) provides cerebral oxygenation and blood flow (CBF) during neonatal congenital heart surgery, but the impacts of CPB on brain oxygen supply and metabolic demands are generally unknown. To elucidate this physiology, we used diffuse correlation spectroscopy and frequency-domain diffuse optical spectroscopy to continuously measure CBF, oxygen extraction fraction (OEF), and oxygen metabolism (CMRO2) in 27 neonatal swine before, during, and up to 24 h after CPB. Concurrently, we sampled cerebral microdialysis biomarkers of metabolic distress (lactate–pyruvate ratio) and injury (glycerol). We applied a novel theoretical approach to correct for hematocrit variation during optical quantification of CBF in vivo. Without correction, a mean (95% CI) +53% (42, 63) increase in hematocrit resulted in a physiologically improbable +58% (27, 90) increase in CMRO2 relative to baseline at CPB initiation; following correction, CMRO2 did not differ from baseline at this timepoint. After CPB initiation, OEF increased but CBF and CMRO2 decreased with CPB time; these temporal trends persisted for 0–8 h following CPB and coincided with a 48% (7, 90) elevation of glycerol. The temporal trends and glycerol elevation resolved by 8–24 h. The hematocrit correction improved quantification of cerebral physiologic trends that precede and coincide with neurological injury following CPB.
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- 2023
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16. The relationship between sternum variation and mode of locomotion in birds
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Talia M. Lowi-Merri, Roger B. J. Benson, Santiago Claramunt, and David C. Evans
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Ecomorphology ,Geometric morphometrics ,Sternum ,Avian ,Flight ,Biology (General) ,QH301-705.5 - Abstract
Abstract Background The origin of powered avian flight was a locomotor innovation that expanded the ecological potential of maniraptoran dinosaurs, leading to remarkable variation in modern birds (Neornithes). The avian sternum is the anchor for the major flight muscles and, despite varying widely in morphology, has not been extensively studied from evolutionary or functional perspectives. We quantify sternal variation across a broad phylogenetic scope of birds using 3D geometric morphometrics methods. Using this comprehensive dataset, we apply phylogenetically informed regression approaches to test hypotheses of sternum size allometry and the correlation of sternal shape with both size and locomotory capabilities, including flightlessness and the highly varying flight and swimming styles of Neornithes. Results We find evidence for isometry of sternal size relative to body mass and document significant allometry of sternal shape alongside important correlations with locomotory capability, reflecting the effects of both body shape and musculoskeletal variation. Among these, we show that a large sternum with a deep or cranially projected sternal keel is necessary for powered flight in modern birds, that deeper sternal keels are correlated with slower but stronger flight, robust caudal sternal borders are associated with faster flapping styles, and that narrower sterna are associated with running abilities. Correlations between shape and locomotion are significant but show weak explanatory power, indicating that although sternal shape is broadly associated with locomotory ecology, other unexplored factors are also important. Conclusions These results display the ecological importance of the avian sternum for flight and locomotion by providing a novel understanding of sternum form and function in Neornithes. Our study lays the groundwork for estimating the locomotory abilities of paravian dinosaurs, the ancestors to Neornithes, by highlighting the importance of this critical element for avian flight, and will be useful for future work on the origin of flight along the dinosaur-bird lineage.
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- 2021
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17. Serial disparity in the carnivoran backbone unveils a complex adaptive role in metameric evolution
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Borja Figueirido, Alberto Martín-Serra, Alejandro Pérez-Ramos, David Velasco, Francisco J. Pastor, and Roger J. Benson
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Biology (General) ,QH301-705.5 - Abstract
Figueirido et al. use a 3D geometric morphometric approach to study functional among-species disparity in the vertebral column of Carnivora, as well as assessing the effect of different sampling methods on homology. Disparity is generally higher in more caudal regions, compared to more cranial regions, but recruitment for locomotor function is pervasive throughout the whole studied column.
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- 2021
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18. Evaluation of Timely Communications Access Methods Using NASA Space Network.
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Christopher J. Roberts, Jacob C. Burke, Markland J. Benson, Jeffrey T. Lubelczyk, Thomas H. Bradley, Gregory W. Heckler, and John J. Hudiburg
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- 2021
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19. Ecological and biogeographic drivers of biodiversity cannot be resolved using clade age-richness data
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Daniel L. Rabosky and Roger B. J. Benson
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Science - Abstract
Age-richness rate (ARR) estimates of evolutionary diversification are widely used to study factors that influence species richness among clades. Here the authors show that ARR inference is based on problematic assumptions and recommend against its use in comparison of past diversity or diversification rates across clades.
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- 2021
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20. Constraints on Sterile Neutrino Models from Strong Gravitational Lensing, Milky Way Satellites, and the Lyman- α Forest
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Ioana A. Zelko, Tommaso Treu, Kevork N. Abazajian, Daniel Gilman, Andrew J. Benson, Simon Birrer, Anna M. Nierenberg, and Alexander Kusenko
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- 2022
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21. Medical cannabis use in the Australian community following introduction of legal access: the 2018–2019 Online Cross-Sectional Cannabis as Medicine Survey (CAMS-18)
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Nicholas Lintzeris, Llewellyn Mills, Anastasia Suraev, Maria Bravo, Thomas Arkell, Jonathon C. Arnold, Melissa J. Benson, and Iain S. McGregor
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Medical cannabis ,Medical marijuana ,Epidemiology ,Health policy ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background In 2016, the Australian federal government passed legislation enabling a range of cannabis-based products to be prescribed to patients by registered healthcare professionals. An online survey conducted immediately prior to these legislative changes found that the vast majority of respondents at the time were illicitly sourcing cannabis plant matter, smoking was the preferred route of administration and mental health, chronic pain, and sleep conditions were the most frequently cited reasons for medical cannabis use. This manuscript reports the results of a follow-up survey conducted in 2018–2019, the Cannabis As Medicine Survey (CAMS-18). The goal of this second questionnaire was to examine patterns of use and consumer perspectives regarding medical cannabis use in Australia, 2 years after the introduction of legal access pathways. Methods Anonymous online cross-sectional survey with convenience sample, recruited mainly through online media between September 2018 and March 2019. Participants were adults (18 years or over) residing in Australia who reported using a cannabis product for self-identified therapeutic reasons during the preceding 12 months. The survey measured consumer characteristics, indications and patterns of medical cannabis use, routes and frequency of administration, perceived benefits and harms, experiences and preferred models of access to medical cannabis. Results Data were available for 1388 respondents. The main categories of condition being treated with medical cannabis were pain (36.4%), mental health (32.8%), sleep (9.2%), neurological (5.2%) and cancer (3.8%). Respondents reported using medical cannabis on 15.8 (11.2) days in the past 28, by inhaled (71.4%) or oral (26.5%) routes and spending AUD$82.27 ($101.27) per week. There were high levels of self-reported effectiveness, but also high rates of side effects. There was uncertainty regarding the composition of illicit cannabinoid products and concerns regarding their possible contamination. Few respondents (2.7%) had accessed legally prescribed medical cannabis, with the main perceived barriers being cost, disinterest from the medical profession and stigma regarding cannabis use. Conclusions Chronic pain, mental health and sleep remain the main clinical conditions for which consumers report using medical cannabis. Despite 2 years of legal availability, most consumers in Australia reported accessing illicit cannabis products, with uncertainty regarding the quality or composition of cannabis products.
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- 2020
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22. Opportunities and Challenges for Visual Qualitative Intervention Research on Facebook
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Abigail J. Rolbiecki, Michelle Teti, Christine Lero, Jacquelyn J. Benson, and Karla T. Washington
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Social sciences (General) ,H1-99 - Published
- 2022
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23. Validating Synthetic Galaxy Catalogs for Dark Energy Science in the LSST Era
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Eve Kovacs, Yao-Yuan Mao, Michel Aguena, Anita Bahmanyar, Adam Broussard, James Butler, Duncan Campbell, Chihway Chang, Shenming Fu, Katrin Heitmann, Danila Korytov, François Lanusse, Patricia Larsen, Rachel Mandelbaum, Christopher B. Morrison, Constantin Payerne, Marina Ricci, Eli Rykoff, F. Javier Sánchez, Ignacio Sevilla-Noarbe, Melanie Simet, Chun-Hao To, Vinu Vikraman, Rongpu Zhou, Camille Avestruz, Christophe Benoist, Andrew J. Benson, Lindsey Bleem, Aleksandra Ćiprianović, Céline Combet, Eric Gawiser, Shiyuan He, Remy Joseph, Jeffrey A. Newman, Judit Prat, Samuel Schmidt, Anže Slosar, and Joe Zuntz
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Astronomy ,QB1-991 ,Astrophysics ,QB460-466 - Published
- 2022
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24. A new calibration method of sub-halo orbital evolution for semi-analytic models
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Shengqi Yang, Xiaolong Du, Andrew J Benson, Anthony R Pullen, and Annika H G Peter
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- 2020
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25. Estimation of CO₂ emissions from petroleum refineries based on the total operable capacity for carbon capture applications
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Adhish Chandra Saketh Madugula, Darshan Sachde, Susan D. Hovorka, Timothy A. Meckel, and Tracy J. Benson
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Carbon ,Capture ,Compression ,Dehydration ,Regression ,Refinery ,Chemical engineering ,TP155-156 - Abstract
Carbon capture and storage processes are sought to play a major role in reducing carbon emissions from large point sources. Petroleum refineries, in particular, produce several streams that are CO2-rich, including fluidized catalytic cracking, steam methane reforming, and natural gas combustion processes that generate heat for refinery operations. Of these, stationary combustion processes account for nearly two-thirds of all CO2 generated within a refinery. In this work, a regression analysis was performed to correlate the size and power requirements for the combined capture, compression, and dehydration process dependent upon a refinery's operating capacity. Refinery capacity and CO2 generation data from 128 U.S. refineries were normalized, and a linear regression model was developed. A capture, compression, and dehydration process model was developed using Aspen HYSYS for delivery of CO2 (10–15 wt. % in steam) to pipeline specifications (500 ppm H2O, 15.2 MPa). Predicted CO2 emissions were 0.1 to 7.7 % of actual emissions, depending on whether a refinery had a low, medium, or high carbon emission/capacity ratio.
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- 2021
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26. Paradoxical Potentiation of Acid-Sensing Ion Channel 3 (ASIC3) by Amiloride via Multiple Mechanisms and Sites Within the Channel
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Daniel S. Matasic, Nicholas Holland, Mamta Gautam, David D. Gibbons, Nobuyoshi Kusama, Anne M. S. Harding, Viral S. Shah, Peter M. Snyder, and Christopher J. Benson
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acid-sensing ion channels ,channel gating ,proton sensing ,amiloride ,whole-cell patch clamp ,Physiology ,QP1-981 - Abstract
Acid-Sensing Ion Channels (ASICs) are proton-gated sodium-selective cation channels that have emerged as metabolic and pain sensors in peripheral sensory neurons and contribute to neurotransmission in the CNS. These channels and their related degenerin/epithelial sodium channel (DEG/ENaC) family are often characterized by their sensitivity to amiloride inhibition. However, amiloride can also cause paradoxical potentiation of ASIC currents under certain conditions. Here we characterized and investigated the determinants of paradoxical potentiation by amiloride on ASIC3 channels. While inhibiting currents induced by acidic pH, amiloride potentiated sustained currents at neutral pH activation. These effects were accompanied by alterations in gating properties including (1) an alkaline shift of pH-dependent activation, (2) inhibition of pH-dependent steady-state desensitization (SSD), (3) prolongation of desensitization kinetics, and (4) speeding of recovery from desensitization. Interestingly, extracellular Ca2+ was required for paradoxical potentiation and it diminishes the amiloride-induced inhibition of SSD. Site-directed mutagenesis within the extracellular non-proton ligand-sensing domain (E79A, E423A) demonstrated that these residues were critical in mediating the amiloride-induced inhibition of SSD. However, disruption of the purported amiloride binding site (G445C) within the channel pore blunted both the inhibition and potentiation of amiloride. Together, our results suggest that the myriad of modulatory and blocking effects of amiloride are the result of a complex competitive interaction between amiloride, Ca2+, and protons at probably more than one site in the channel.
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- 2021
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27. The dark matter haloes of moderate luminosity X-ray AGN as determined from weak gravitational lensing and host stellar masses
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Leauthaud, Alexie, J. Benson, Andrew, Civano, Francesca, L. Coil, Alison, Bundy, Kevin, Massey, Richard, Schramm, Malte, Schulze, Andreas, Capak, Peter, Elvis, Martin, Kulier, Andrea, and Rhodes, Jason
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galaxies: abundances ,galaxies: active ,galaxies: haloes ,galaxies: Seyfert ,galaxies: stellar content ,Astronomical and Space Sciences ,Astronomy & Astrophysics - Published
- 2015
28. Stopover duration of spring migrating dabbling ducks in the Wabash river valley
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Benjamin R. Williams, Thomas J. Benson, Aaron P. Yetter, Joseph D. Lancaster, and Heath M. Hagy
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Anas ,green‐winged teal ,mallard ,spring migration ,stopover duration ,waterfowl ,General. Including nature conservation, geographical distribution ,QH1-199.5 - Abstract
ABSTRACT Waterfowl use stopover sites during spring migration to rest and replenish nutrient reserves prior to their arrival on breeding grounds. Estimating the extent to which an individual remains at a stopover site before dispersing (i.e., stopover duration) is essential for managers to develop wetland habitat objectives needed to ensure sufficient resources are available to meet the needs of migrating waterfowl. Our objectives were to determine average stopover duration of dabbling ducks in the Wabash River Valley (WRV) of Illinois and Indiana, USA, identify factors that may influence that duration, and evaluate how those duration values compare with those currently used by the Upper Mississippi River and Great Lakes Region Joint Venture (UMRGLRJV). We estimated stopover duration of 39 mallard (Anas platyrhynchos) and 62 green‐winged teal (A. crecca) between January and April 2016–2017 in the WRV. Estimated stopover duration for mallards and green‐winged teal was 17.0 days (95% CI = 12.6–22.9). Our estimate is substantially shorter than current estimates used by the UMRGLRJV for conservation planning and could affect conservation objectives for waterfowl. © 2019 The Wildlife Society.
- Published
- 2019
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29. The multi-peak adaptive landscape of crocodylomorph body size evolution
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Pedro L. Godoy, Roger B. J. Benson, Mario Bronzati, and Richard J. Butler
- Subjects
Crocodylomorpha ,Crocodyliformes ,Body size evolution ,Adaptive landscape ,Phylogenetic comparative methods ,Ornstein–Uhlenbeck models ,Evolution ,QH359-425 - Abstract
Abstract Background Little is known about the long-term patterns of body size evolution in Crocodylomorpha, the > 200-million-year-old group that includes living crocodylians and their extinct relatives. Extant crocodylians are mostly large-bodied (3–7 m) predators. However, extinct crocodylomorphs exhibit a wider range of phenotypes, and many of the earliest taxa were much smaller (
- Published
- 2019
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30. Correlation of Cerebral Microdialysis with Non-Invasive Diffuse Optical Cerebral Hemodynamic Monitoring during Deep Hypothermic Cardiopulmonary Bypass
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Tiffany S. Ko, Constantine D. Mavroudis, Emilie J. Benson, Rodrigo M. Forti, Richard W. Melchior, Timothy W. Boorady, Vincent C. Morano, Kobina Mensah-Brown, Yuxi Lin, Danielle Aronowitz, Jonathan P. Starr, Tami M. Rosenthal, Brandon C. Shade, Kellie L. Schiavo, Brian R. White, Jennifer M. Lynch, J. William Gaynor, Daniel J. Licht, Arjun G. Yodh, Wesley B. Baker, and Todd J. Kilbaugh
- Subjects
cardiopulmonary bypass ,deep hypothermic circulatory arrest ,diffuse optics ,neuromonitoring ,cerebral hemodynamics ,cerebral microdialysis ,Microbiology ,QR1-502 - Abstract
Neonates undergoing cardiac surgery involving aortic arch reconstruction are at an increased risk for hypoxic-ischemic brain injury. Deep hypothermia is utilized to help mitigate this risk when periods of circulatory arrest are needed for surgical repair. Here, we investigate correlations between non-invasive optical neuromonitoring of cerebral hemodynamics, which has recently shown promise for the prediction of postoperative white matter injury in this patient population, and invasive cerebral microdialysis biomarkers. We compared cerebral tissue oxygen saturation (StO2), relative total hemoglobin concentration (rTHC), and relative cerebral blood flow (rCBF) measured by optics against the microdialysis biomarkers of metabolic stress and injury (lactate–pyruvate ratio (LPR) and glycerol) in neonatal swine models of deep hypothermic cardiopulmonary bypass (DHCPB), selective antegrade cerebral perfusion (SACP), and deep hypothermic circulatory arrest (DHCA). All three optical parameters were negatively correlated with LPR and glycerol in DHCA animals. Elevation of LPR was found to precede the elevation of glycerol by 30–60 min. From these data, thresholds for the detection of hypoxic-ischemia-associated cerebral metabolic distress and neurological injury are suggested. In total, this work provides insight into the timing and mechanisms of neurological injury following hypoxic-ischemia and reports a quantitative relationship between hypoxic-ischemia severity and neurological injury that may inform DHCA management.
- Published
- 2022
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31. Cancer-Related Fatigue in Hospice: A Nudge to Action?
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Karla T. Washington, Alyssa Knight, Kyle A. Pitzer, Debra Parker Oliver, Shannon M. Devlin, Jacquelyn J. Benson, and Pamela Newland
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Anesthesiology and Pain Medicine ,Neurology (clinical) ,General Nursing - Published
- 2023
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32. What Do TIPS Say about Real Interest Rates and Required Returns?
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J. Benson Durham
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Economics and Econometrics ,Accounting ,Finance - Published
- 2023
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33. Anatomy and relationships of the bizarre Early Cretaceous pliosaurid Luskhan itilensis
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Valentin Fischer, Roger B J Benson, Nikolay G Zverkov, Maxim S Arkhangelsky, Ilya M Stenshin, Gleb N Uspensky, and Natalya E Prilepskaya
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Animal Science and Zoology ,Biodiversity ,Ecology, Evolution, Behavior and Systematics ,Taxonomy - Abstract
Pliosaurid plesiosaurians are iconic marine reptiles that regulated marine trophic chains from the Middle Jurassic to the early Late Cretaceous. However, their evolution during the Cretaceous remains poorly documented. Recent discoveries from the Hauterivian–Aptian interval suggest that the radiation of brachaucheniine pliosaurids produced a wide disparity of forms following the Pliosaurus-dominated assemblages of the Late Jurassic. Among the most bizarre of these early brachaucheniines is Luskhan itilensis, from the Hauterivian of Russia. We describe the osteology of this tusked, longirostrine pliosaurid and discuss its possible behaviour by drawing comparisons with other marine amniotes possessing forward-pointing teeth. We take this opportunity to make extensive anatomical comparisons among Cretaceous pliosaurids, including previously overlooked cranial features. Bayesian inference of phylogenetic relationships of plesiosaurians reveals that the internal branches in Late Jurassic–Late Cretaceous pliosaurids have generally low rates of morphological evolution, indicating that the recently described Early Cretaceous pliosaurids have effectively bisected the long branch leading to the ‘classical’ brachaucheniines of the middle Cretaceous (Brachauchenius, Kronosaurus and Megacephalosaurus). Pliosaurids exhibit low evolutionary rates and a dwindling disparity before their extinction, mirroring the events seen, roughly at the same time, for ichthyosaurians.
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- 2023
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34. Quantifying the power spectrum of small-scale structure in semi-analytic galaxies
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Sean Brennan, Andrew J Benson, Francis-Yan Cyr-Racine, Charles R Keeton, Leonidas A Moustakas, and Anthony R Pullen
- Published
- 2019
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35. More on Monetary Policy and Stock Price Returns
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Durham, J. Benson
- Published
- 2005
36. ACTH and PMX53 recover synaptic transcriptome alterations in a rat model of infantile spasms
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Dumitru A. Iacobaş, Tamar Chachua, Sanda Iacobaş, Melissa J. Benson, Karin Borges, Jana Velíšková, and Libor Velíšek
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Medicine ,Science - Abstract
Abstract We profiled the gene expression in the hypothalamic arcuate nuclei (ARC) of 20 male and 20 female rats to determine the infantile spasms (IS) related transcriptomic alteration of neurotransmission and recovery following two treatments. Rats were prenatally exposed to betamethasone or saline followed by repeated postnatal subjection to NMDA-triggered IS. Rats with spasms were treated with ACTH, PMX53 or saline. Since ACTH, the first line treatment for IS, has inconsistent efficacy and potential harsh side effects, PMX53, a potent complement C5ar1 antagonist, was suggested as a therapeutic alternative given its effects in other epilepsy models. Novel measures that consider all genes and are not affected by arbitrary cut-offs were used, in addition to standard statistical tests, to quantify regulation and recovery of glutamatergic, GABAergic, cholinergic, dopaminergic and serotonergic pathways. Although IS alters expression of ~30% of the ARC genes in both sexes the transcriptomic effects are 3× more severe in males than their female counterparts, as indicated by the Weighted Pathway Regulation measure. Both treatments significantly restored the ARC neurotransmission transcriptome to the non-IS condition with PMX53 performing slightly better, as measured by the Pathway Restoration Efficiency, suggesting these treatments may reduce autistic traits often associated with IS.
- Published
- 2018
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37. Economic Growth and Institutions: Some Sensitivity Analyses, 1961-2000
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Durham, J. Benson
- Published
- 2004
38. Practical Applications of Value for Equity Index Options: Expected—Not Realized—Volatility and the Distribution of Forecasts
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Durham, J. Benson, primary
- Published
- 2023
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39. Monetary Policy and Stock Price Returns
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Durham, J. Benson
- Published
- 2003
40. An Evaluation of Timely Communications Access Methods Using NASA Space Network
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Christopher J. Roberts, Jacob C Burke, Markland J Benson, Jeffrey T Lubelczyk, Thomas H. Bradley, Gregory W Heckler, and John J Hudiburg
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Space Communications, Spacecraft Communications, Command And Tracking - Abstract
There is a growing interest among scientists to coordinate diverse and temporally responsive measurements from multiple space and ground-based observatories in order to obtain greater insights into transient scientific events than would otherwise be possible. Many transient scientific events of interest occur randomly and the scientific value of follow-up observations decays with time. As a result, transient science operations among distributed observatories require timely access to communications network services. This paper develops two complimentary methods to improve users’ network access timeliness using the NASA Space Network (SN). Descriptive models of each method are developed using Systems Modeling Language. Pathfinder experiments are designed and executed. Suitability of the methods is discussed in light of the experimental results. Innovative applications of the methods are presented. This research establishes that the as-built SN systems have adequate capabilities and capacity to support infusion of the methods to current and future users with emergent time-sensitive service needs. The minimum service access wait time was determined to be approximately 10 min and is achievable 84% of the time. An average access wait time of approximately 14 min is expected when SN resource blocking occurs. A roadmap to improve SN access timeliness is presented.
- Published
- 2021
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41. The rank dynamics of integrating new members: The process of hierarchical crafting
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Alex J. Benson, Alexander J. McGregor, Luc J. Martin, Natalie J. Allen, and Mark W. Bruner
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Social Psychology ,Physical Therapy, Sports Therapy and Rehabilitation ,Applied Psychology - Published
- 2023
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- View/download PDF
42. Sleep, circadian rhythm characteristics, and melatonin levels in later life adults with and without coronary artery disease
- Author
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Chooza Moon, Christopher J. Benson, Alaa Albashayreh, Yelena Perkhounkova, and Helen J. Burgess
- Subjects
Pulmonary and Respiratory Medicine ,Neurology ,Neurology (clinical) - Abstract
The purpose of this study was to conduct a comprehensive assessment of sleep and circadian rhythms in individuals with and without coronary artery disease (CAD).This was a cross-sectional study. Participants were 32 individuals; mean age = 70.9; female 46.9%; 19 with CAD; and 13 without CAD. We assessed sleep quality and 24-hour rest-activity rhythms for 14 days using wrist actigraphy and self-report measures, and circadian rhythm using dim light melatonin onset (DLMO).Melatonin levels prior to habitual bedtime were significantly lower in individuals with CAD than in those without CAD (median AUC = 12.88 vs. 26.33 pg/ml × h, p = .049). The median circadian timing measured by DLMO was the same for the two groups with 20:26 [hh:mm] for individuals with CAD and 19:53 for the control group (p = .64, r = 0.14). Compared to the control group, the CAD group had significantly lower amplitude (p = .03, r = -.48), and lower overall rhythmicity (pseudo-F-statistic p = .004, r = -.65) in their 24-hour rest-activity rhythms.This is one of the first study to comprehensively assess both sleep and circadian rhythm in individuals with CAD. Compared to non-CAD controls, individuals with CAD had lower levels of melatonin prior to habitual bedtime and a lower 24-hour rest-activity rhythm amplitude and overall rhythmicity. Future studies using larger sample sizes should further investigate the possibility of suppressed circadian rhythmicity in individuals with CAD.
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- 2023
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43. Medicinal cannabis for Australian patients with chronic refractory pain including arthritis
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Elise A Schubert, Masego T Johnstone, Melissa J Benson, Johannes C Alffenaar, and Nial J Wheate
- Subjects
Anesthesiology and Pain Medicine - Abstract
Objectives To examine the tolerability and effectiveness of medicinal cannabis prescribed to patients for chronic, refractory pain, with a subset analysis on arthritis. Methods This was an interim analysis of the CA Clinics Observational Study investigating self-reported adverse events (AEs) and changes in health-related quality of life (HRQoL) outcomes over time after commencing medicinal cannabis. Patients were prescribed medicinal cannabis by a medical practitioner, containing various ratios of Δ9-tetrahydrocannabinol (THC) and/or cannabidiol (CBD). Results The overall chronic pain cohort, and specifically the balanced CBD:THC products, were associated with significantly reduced pain intensity scores ( p = 0.003, p = 0.025), with 22% of patients reporting a clinically meaningful reduction in pain intensity. Patients in the arthritis subset ( n = 199) reported significantly reduced pain intensity scores ( p = 0.005) overall, and specifically for those taking CBD-only ( p = 0.018) and balanced products ( p = 0.005). Other HRQoL outcomes, including pain interference and pain impact scores were significantly improved depending on the CBD:THC ratio. Products that contained a balanced ratio of CBD:THC were associated with improvements in the most number of PROMIS-29 domains. Approximately half ( n = 364; 51%) of the chronic pain cohort experienced at least one AE, the most common being dry mouth (24%), somnolence (19%) or fatigue (12%). These findings were similar in the arthritis subset. Discussion Medicinal cannabis was observed to improve pain intensity scores and HRQoL outcomes in patients with chronic, refractory pain, providing real-world insights into medicinal cannabis’ therapeutic potential.
- Published
- 2022
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- View/download PDF
44. Modeling eighteen years of community science data reveals extensive recolonization of bobcats in Illinois, USA
- Author
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Javan M. Bauder, Kirk W. Stodola, Thomas J. Benson, Craig A. Miller, and Maximilian L. Allen
- Subjects
Ecology ,Geography, Planning and Development ,Nature and Landscape Conservation - Published
- 2022
- Full Text
- View/download PDF
45. Covariances of galaxy stellar mass functions and correlation functions
- Author
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Andrew J Benson
- Published
- 2018
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46. An aerial grid‐based sampling method to estimate nonbreeding duck abundance
- Author
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Jacob D. Hennig, Thomas J. Benson, Joshua D. Stafford, Aaron P. Yetter, Heath M. Hagy, and Kirk W. Stodola
- Subjects
discontinuous habitat ,floodplain ,Illinois ,Indiana ,Wabash River ,waterfowl ,General. Including nature conservation, geographical distribution ,QH1-199.5 - Abstract
ABSTRACT Probability‐based sampling designs for aerial surveys are useful for estimating wintering waterfowl abundances in large areas with contiguous habitat (e.g., Mississippi Alluvial Valley). The effectiveness of these approaches for estimating abundance of nonbreeding waterfowl in small areas with discontinuous habitat has rarely been assessed. Surveys conducted within riverine areas introduce sampling design difficulties because of discontinuous bottomland habitat and irregularity of flooding events. Therefore, we implemented and evaluated a generalizable grid‐based, stratified random sampling design to estimate weekly duck abundance within the Wabash River floodplain in southeastern Illinois and southwestern Indiana, USA, during midwinter and early spring 2012 and 2013. We used aerial and ground‐based counts to generate abundance estimates and evaluate within‐week variation of counts. Peak duck abundance totaled 279,717 (SE = 69,101) in 2012 and 742,027 (SE = 296,563) in 2013. Dabbling ducks were the most abundant duck guild detected and abundance estimates for this group met our precision goal (CV ≤ 0.25) in 4 of 18 surveys (x¯ = 0.33, range = 0.20–0.51). We compared the grid‐based approach with a traditional aerial inventory and found that estimates from the grid‐based approach were on average 75,175 (SE = 46,768) greater than inventory counts. Desired levels of precision were often not met, yet design improvements in 2013 notably increased precision, suggesting that further modifications may allow this method to be useful in riverine areas with discontinuous and ephemeral habitat. © 2017 The Wildlife Society.
- Published
- 2017
- Full Text
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47. Environmental signal in the evolutionary diversification of bird skeletons
- Author
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Guillermo Navalón, Alexander Bjarnason, Elizabeth Griffiths, and Roger B. J. Benson
- Subjects
Birds ,Phenotype ,Multidisciplinary ,Mosaicism ,Beak ,Animals ,Extremities ,Environment ,Biological Evolution ,Locomotion ,Skeleton - Abstract
Characterizing how variation in the tempo and mode of evolution has structured the phenotypic diversity of extant species is a central goal of macroevolution1,2,3. However, studies are typically limited to a handful of traits4,5,6, providing incomplete information. We analyse morphological diversification in living birds, an ecologically diverse group7, documenting structural scales from ‘pan-skeletal’ proportions down to the localized three-dimensional shape changes of individual bones. We find substantial variation in evolutionary modes among avian subgroups and among skeletal parts, indicating widespread mosaicism and possible differences in the structure of the macroevolutionary landscape across Earth’s main environments. Water-linked groups, especially Aequorlitornithes (waterbirds), have repeatedly explored a large portion of their total morphospace, emphasizing variation in body proportions and in the shape of bones close to the body core, which are functionally related to the mechanics of locomotion8. By contrast, landbirds (Inopinaves) evolved distinct, group-specific body forms early in the aftermath of the K-Pg and subsequently emphasized local shape variation, especially in the head and distal limb bones, which interact more directly with the environment. Passerines, which comprise more than half of all bird species, show a conservative evolutionary dynamic that resulted in low disparity across all skeletal parts. Evidence for early establishment of the morphospace of living birds is clear for some skeletal parts, including beaks and the combined skeletal morphology. However, we find little evidence for early partitioning of that morphospace, contrary to more specific predictions of ‘niche-filling’ models1,9. Nevertheless, early divergence among broad environmental types may have caused an early divergence of evolutionary modes, suggesting an important role for environmental divergence in structuring the radiation of crown-group birds.
- Published
- 2022
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48. Cranial osteology and palaeobiology of the Early Cretaceous bird Jeholornis prima (Aves: Jeholornithiformes)
- Author
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Han Hu, Yan Wang, Matteo Fabbri, Jingmai K O’Connor, Paul G McDonald, Stephen Wroe, Xuwei Yin, Xiaoting Zheng, Zhonghe Zhou, and Roger B J Benson
- Subjects
Animal Science and Zoology ,Ecology, Evolution, Behavior and Systematics - Abstract
Jeholornis is a representative of the earliest-diverging bird lineages, providing important evidence of anatomical transitions involved in bird origins. Although ~100 specimens have been reported, its cranial morphology remains poorly documented owing to poor two-dimensional preservation, limiting our understanding of the morphology and ecology of the key avian lineage Jeholornithiformes, in addition to cranial evolution during the origin and early evolution of birds. Here, we provide a detailed description of the cranial osteology of Jeholornis prima, based primarily on high-quality, three-dimensional data of a recently reported specimen. New anatomical information confirms the overall plesiomorphic morphology of the skull, with the exception of the more specialized rostrum. Data from a large sample size of specimens reveal the dental formula of J. prima to be 0–2–3 (premaxillary–maxillary–dentary tooth counts), contrary to previous suggestions that the presence of maxillary teeth is diagnostic of a separate species, Jeholornis palmapenis. We also present evidence of sensory adaptation, including relatively large olfactory bulbs in comparison to other known stem birds, suggesting that olfaction was an important aspect of Jeholornis ecology. The digitally reconstructed scleral ring suggests a strongly diurnal habit, supporting the hypothesis that early-diverging birds were predominantly active during the day.
- Published
- 2022
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- View/download PDF
49. General Tumbling-Averaged Rotational Dynamics for Defunct Satellites
- Author
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Conor J. Benson and Daniel J. Scheeres
- Subjects
Space and Planetary Science ,Control and Systems Engineering ,Applied Mathematics ,Aerospace Engineering ,Electrical and Electronic Engineering - Published
- 2022
- Full Text
- View/download PDF
50. Long-term data reveal equivocal evidence for intraguild suppression among sympatric canids
- Author
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Javan M. Bauder, Maximilian L. Allen, Adam A. Ahlers, Thomas J. Benson, Craig A. Miller, and Kirk W. Stodola
- Subjects
Ecology ,Ecology, Evolution, Behavior and Systematics ,Nature and Landscape Conservation - Published
- 2022
- Full Text
- View/download PDF
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