cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Loop quantum cosmology and the fate of cosmological singularities
Creators: name: Singh, Parampreet
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Singularities in general relativity such as the big bang and big crunch, and exotic singularities such as the big rip are the boundaries of the classical spacetimes. These events are marked by a divergence in the curvature invariants and the breakdown of the geodesic evolution. Recent progress on implementing techniques of loop quantum gravity to cosmological models reveals that such singularities may be generically resolved because of the quantum gravitational effects. Due to the quantum geometry, which replaces the classical differential geometry at the Planck scale, the big bang is replaced by a big bounce without any assumptions on the matter content or any fine tuning. In this manuscript, we discuss some of the main features of this approach and the results on the generic resolution of singularities for the isotropic as well as anisotropic models. Using effective spacetime description of the quantum theory, we show the way quantum gravitational effects lead to the universal bounds on the energy density, the Hubble rate and the anisotropic shear. We discuss the geodesic completeness in the effective spacetime and the resolution of all of the strong singularities. It turns out that despite the bounds on energy density and the Hubble rate, there can be divergences in the curvature invariants. However such events are geodesically extendible, with tidal forces not strong enough to cause inevitable destruction of the in-falling objects.
description: 26 pages, 1 figure. Invited review based on M K Vainu Bappu gold medal award lecture. Published in Bulletin of Astronomical Society of India
Electric control of superconducting transition through a spin-orbit coupled interface
Creators: name: Ouassou, Jabir Ali
name: Di Bernardo, Angelo
name: Robinson, Jason W. A.
name: Linder, Jacob
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We demonstrate theoretically all-electric control of the superconducting transition temperature using a device comprised of a conventional superconductor, a ferromagnetic insulator, and semiconducting layers with intrinsic spin-orbit coupling. By using analytical calculations and numerical simulations, we show that the transition temperature of such a device can be controlled by electric gating which alters the ratio of Rashba to Dresselhaus spin-orbit coupling. The results offer a new pathway to control superconductivity in spintronic devices.
description: 9 pages, 5 figures; added a new Methods section, and added references
title: Added value of one-view digital breast tomosynthesis combined with digital mammography according to readers concordance: changing in BIRADS rate and follow-up management - a preliminary study
Creators: name: Pediconi, Federica
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Breast
subject: Mammography
subject: Diagnostic procedure

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To evaluate the added value of one-view Digital Breast Tomosynthesis (DBT) when combined with two-view Digital Mammography (DM) in modification of BIRADS assessment and follow-up...
On Multiplicative Fractional Calculus
Creators: name: Abdeljawad, Thabet
Publisher: name: arXiv
Year: 2015
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: We set the main concepts for multiplicative fractional calculus. We define Caputo, Riemann and Letnikov multiplicative fractional derivatives and multiplicative fractional integrals and study some of their properties. Finally, the multiplicative analogue of the local conformable fractional derivative and integral is studied.
Tableau sequences, open diagrams, and Baxter families
Creators: name: Burrill, Sophie
name: Courtiel, Julien
name: Fusy, Eric
name: Melczer, Stephen
name: Mishna, Marni
Publisher: name: arXiv
Year: 2015
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05A19

description: Walks on Young's lattice of integer partitions encode many objects of algebraic and combinatorial interest. Chen et al. established connections between such walks and arc diagrams. We show that walks that start at $\varnothing$, end at a row shape, and only visit partitions of bounded height are in bijection with a new type of arc diagram -- open diagrams. Remarkably two subclasses of open diagrams are equinumerous with well known objects: standard Young tableaux of bounded height, and Baxter permutations. We give an explicit combinatorial bijection in the former case.
description: 20 pages; Text overlap with arXiv:1411.6606. This is the full version of that extended abstract. Conjectures from that work are proved in this work
DataFolha Survey: Expectations for 1989/Evaluation of Mayor
Creators: name: DataFolha Institute Of Research
Publisher: name: Roper Center for Public Opinion Research
Year: 1992

description: General evaluation of 1988(1); expectations for 1989(2); vote for Mayor, 1988(1); evaluation of Mayor Braga's job performance(3 expectations for next mayor(2); party ID(1).
A Micro-Level Approach to Recommendations for Combating a Potential Outbreak of a Chloroquine-Resistant Malaria (CRM) Strain in the Country of Haiti
Creators: name: Rutland, Brent
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: Malaria is a worldwide public health burden that has been reported by the World Health Organization (WHO) to cause roughly 219 million cases of disease in 2010 with an estimated 660,000 deaths (2013). In the Caribbean nation of Haiti, malaria remains endemic. Confirmed malaria cases reported in Haiti increased from 10,802 in 2004 to 49,535 in 2009 (WHO, 2009a). Currently, P. falciparum is the predominant species to cause disease in Haiti, and unfortunately, the same species that is most likely to cause severe malaria; responsible for most malarial deaths globally (WHO, 2009a). Fortunately though, if treated early, a readily available drug, chloroquine phosphate, can effectively treat this strain. However, although chloroquine has proved to be an effective cure for nearly 40 years, the emergence and spread of chloroquine-resistant parasites are occurring both worldwide and in Haiti. The impact of these resistant cases on this already impoverished nation could be devastating. This document will outline three recommendations to serve as practical public health strategies on how to lower the risks associated with malaria, thus combating a potential outbreak of chloroquine-resistant malaria (CRM) in Haiti.
title: Applying the geometrical distance formula on MRIs to identify positional changes of anteriorly displaced TMJ discs treated by BOTOX injection in the lateral pterygoid
Creators: name: Emara, Aala'a
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Head and neck
subject: Computer applications
subject: MR
subject: Surgery

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The temporomandibular joint (TMJ) is a complex articulation of a series of complicated osseous and soft tissue structures. Early knowledge of TMJ pathologies relied mainly on clinical presentationsandthe use of basicorinvasive imaging...
Low Noise, tunable Ho:fiber Soliton Oscillator for Ho:YLF Amplifier Seeding
Creators: name: Li, Peng
name: Ruehl, Axel
name: Bransley, Colleen
name: Hartl, Ingmar
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a passively mode-locked, tunable soliton Ho:fiber ring oscillator, optimized for seeding of Ho:YLF amplifiers. The oscillator is independently tunable in central wavelength and spectral width from 2040 nm to 2070 nm and from 5 nm to 10 nm, respectively. At all settings the pulse energy within the soliton is around 800 pJ. The soliton oscillator was optimized to fully meets the spectral requirements for seeding Ho:YLF amplifiers. Its Kelly sidebands are located outside the amplifier gain spectrum, resulting in a train of about 1 ps long pedestal-free pulses with relative intensity noise (RIN) of only 0.13 % RMS when integrated from 1 Hz to Nyquist frequency.
title: Novel x-ray detector technology for improved materials contrast
Creators: name: White, Phil
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Radiation physics
subject: Computer applications
subject: Digital radiography
subject: Computer Applications-General
subject: Physics

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Dual energy and multi-spectral X-ray imaging [1-3] are a growing part of medical imaging and can be used to obtain valuable diagnostic information such asbone density, bone subtracted images, detection of liquid/fat or calcified regions. Recent...
An Instrument to Assess Occupational Health Hazards of Veterinary Health Workers
Creators: name: Malak, Joel
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: There are many hazards faced by veterinary health care workers. In this paper, the worker population was identified and defined, the economic and legislative context impacting this workforce was explored, and a literature review was conducted to outline the current state of occupational health and safety practices in organizations employing veterinary health workers. The literature review considered the five categories of occupational hazards (biological, chemical, enviromechanical, physical, and psychosocial), and identified the many occupational environments including work practices, work tasks, and common materials. The purpose of this research was to explore the occupational hazards in the veterinary workplace and develop a survey tool to further expand knowledge related to these hazards, as well as identify the characteristics and attitudes of this worker population regarding work-related hazards.
Dynamic Feedback in Ferromagnet/Spin Hall Metal Heterostructures
Creators: name: Cheng, Ran
name: Zhu, Jian-Gang
name: Xiao, Di
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In ferromagnet/normal metal heterostructures, spin pumping and spin-transfer torques are two reciprocal processes that occur concomitantly. Their interplay introduces a dynamic feedback effect interconnecting energy dissipation channels of both magnetization and current. By solving the spin diffusion process in the presence of the spin Hall effect in the normal metal, we show that the dynamic feedback gives rise to: (i) a nonlinear magnetic damping that is crucial to sustain uniform steady-state oscillations of a spin Hall oscillator at large angles. (ii) a frequency dependent spin Hall magnetoimpedance that reduces to the spin Hall magnetoresistance in the dc limit.
description: 4.5 pages, 2 figures
First Millimeter Flares Detected from Epsilon Eridani with ALMA
Creators: name: Burton, Kiana
name: MacGregor, Meredith A.
name: Osten, Rachel A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report the detection of three large millimeter flaring events from the nearby Sun-like, $ε$ Eridani, found in archival ALMA 12m and ACA observations at 1.33 mm taken from 2015 January 17-18 and 2016 October 24-November 23, respectively. This is the first time that flares have been detected from a Sun-like star at millimeter wavelengths. The largest flare among our data was detected in the ALMA observations on 2015 January 17 from 20:09:10.4-21:02:49.3 (UTC) with a peak flux density of 28 $\pm$ 7 mJy and a duration of 9 sec. The peak brightness of the largest flare is $ 3.4 \pm 0.9 \times 10^{14}$ erg s$^{-1}$Hz$^{-1}$, a factor of $>50\times$ times brighter than the star's quiescent luminosity and $>10\times$ brighter than solar flares observed at comparable wavelengths. We find changes in the spectral index (F$_ν\proptoν^α$) at the flare peak, with $α$ = 1.81 $\pm$ 1.94 and a lower limit on the fractional linear polarization $|Q/I| = $ 0.08 $\pm$ 0.12. This positive spectral index is more similar to millimeter solar flares, differing from M dwarf flares also detected at millimeter wavelengths that exhibit steeply negative spectral indices.
description: 9 pages, 4 figures, 1 table, accepted for publication in ApJL
The Origin of Fluorine: Abundances in AGB Carbon Stars Revisited
Creators: name: Abia, C.
name: Cunha, K.
name: Cristallo, S.
name: de Laverny, P.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Revised spectroscopic parameters for the HF molecule and a new CN line list in the 2.3 mu region have been recently available, allowing a revision of the F content in AGB stars. AGB carbon stars are the only observationally confirmed sources of fluorine. Nowadays there is not a consensus on the relevance of AGB stars in its Galactic chemical evolution. The aim of this article is to better constrain the contribution of these stars with a more accurate estimate of their fluorine abundances. Using new spectroscopic tools and LTE spectral synthesis, we redetermine fluorine abundances from several HF lines in the K-band in a sample of Galactic and extragalactic AGB carbon stars of spectral types N, J and SC spanning a wide range of metallicities. On average, the new derived fluorine abundances are systematically lower by 0.33 dex with respect to previous determinations. This may derive from a combination of the lower excitation energies of the HF lines and the larger macroturbulence parameters used here as well as from the new adopted CN line list. Yet, theoretical nucleosynthesis models in AGB stars agree with the new fluorine determinations at solar metallicities. At low metallicities, an agreement between theory and observations can be found by handling in a different way the radiative/convective interface at the base of the convective envelope. New fluorine spectroscopic measurements agree with theoretical models at low and at solar metallicity. Despite this, complementary sources are needed to explain its observed abundance in the solar neighbourhood.
description: 9 pages, 4 figures, accepted in A&A
There’s no cure for brain injury: work-related stress in brain injury rehabilitation professionals
Creators: name: Murray, Gillian
name: Hart, Tessa
name: Doyle, Andrea
name: Bohrman, Casey
name: Toth, Chelsea
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Mental Health

description: Objective: To explore the experience of work-related stress in brain injury professionals and to identify the contributing factors to work-related stress. Methods: 17 brain injury professionals participated in one-time interviews conducted either in person or utilising video conferencing. The data were analysed utilising a Grounded Theory approach. Results: Participants reported that working in brain injury rehabilitation is difficult due to the complex and unpredictable nature of brain injury. The impact of limited funding and resources was endorsed by all participants as the most stressful aspect of working in this field. Emotional experiences associated with treating survivors and organisational factors increase the risk for work-related stress. Brain injury professionals rely on support provided by coworkers and supervisors. Conclusion: This study provides a deeper understanding of work-related stress and challenges of working in the brain injury rehabilitation field, as well as appreciation for the personal and organisational strategies that may help to offset stress. The unpredictable nature of working in brain injury rehabilitation impacted professionals at the micro, mezzo, and macro levels of practice. Overall, it was apparent that the participants interviewed were highly resilient individuals, demonstrating acceptance and flexibility in the limitations they face working in the field of brain injury rehabilitation.
High-resolution isotope-shift spectroscopy of Cd I
Creators: name: Hofsäss, Simon
name: Padilla-Castillo, J. Eduardo
name: Wright, Sid C.
name: Kray, Sebastian
name: Thomas, Russell
name: Sartakov, Boris G.
name: Ohayon, Ben
name: Meijer, Gerard
name: Truppe, Stefan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present absolute frequency measurements of the ${}^{1}\text{P}_1 \leftarrow {}^{1}\text{S}_0$ ($229$nm) and ${}^{3}\text{P}_1 \leftarrow {}^{1}\text{S}_0$ ($326$nm) transitions for all naturally occurring isotopes of cadmium. The isotope shifts and hyperfine intervals of the fermionic isotopes are determined with an accuracy of 3.3MHz. We find that quantum interference in the laser-induced fluorescence spectra of the ${}^{1}\text{P}_1 \leftarrow {}^{1}\text{S}_0$ transition causes an error of up to 29(5)MHz in determining the hyperfine splitting, when not accounted for with an appropriate model. Using a King-plot analysis, we extract the field- and mass-shift parameters and determine nuclear charge radius differences for the fermions. The lifetime of the $^1\text{P}_1$ state is determined to be 1.60(5)ns by measuring the natural linewidth of the ${}^{1}\text{P}_1 \leftarrow {}^{1}\text{S}_0$ transition. These results resolve significant discrepancies among previous measurements.
DataFolha Survey: Expectations for 1989/Evaluation of Mayor
Creators: name: DataFolha Institute Of Research
Publisher: name: Roper Center for Public Opinion Research
Year: 1992

description: General evaluation of 1988(1); expectations for 1989(2); vote for Mayor, 1988(1); evaluation of Mayor Ferrara's job performance(3); expectations for next Mayor(2); party ID(1).
title: Brain atrophy and neurological deficit in relapsing remitting multiple sclerosis: a 1-year follow-up study
Creators: name: Krotenkova, Irina
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Neuroradiology brain
subject: MR
subject: Education
subject: Education and training

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: BACKGROUND: Multiple sclerosis (MS)is widely known to be not only a chronic inflammatory disease, but also a degenerative process. MS has traditionally been viewed as a disease affecting white matter (WM), but pathological studies from the beginning...
Two-photon imaging through a multimode fiber
Creators: name: Morales-Delgado, Edgar E.
name: Psaltis, Demetri
name: Moser, Christophe
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this work we demonstrate 3D imaging using two-photon excitation through a 20 cm long multimode optical fiber (MMF) of 350 micrometers diameter. The imaging principle is similar to single photon fluorescence through a MMF, except that a focused femtosecond pulse is delivered and scanned over the sample. In our approach, focusing and scanning through the fiber is accomplished by digital phase conjugation using mode selection by time gating with an ultra-fast reference pulse. The excited two-photon emission is collected through the same fiber. We demonstrate depth sectioning by scanning the focused pulse in a 3D volume over a sample consisting of fluorescent beads suspended in a polymer. The achieved resolution is 1 micrometer laterally and 15 micrometers axially. Scanning is performed over an 80x80 micrometers field of view. To our knowledge, this is the first demonstration of high-resolution three-dimensional imaging using two-photon fluorescence through a multimode fiber.
Interface instabilities in hydrodynamic relativistic jets
Creators: name: Abolmasov, Pavel
name: Bromberg, Omer
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Both the dynamics and the observational properties of relativistic jets are determined by their interaction with the ambient medium. A crucial role is played by the contact discontinuity at the jet boundary, which in the presence of jet collimation may become subject to Rayleigh-Taylor instability (RTI) and Richtmyer-Meshkov instability (RMI). Here, we study the evolution of these instabilities in non-magnetized relativistic jets using special relativistic three-dimensional hydrodynamic simulations. We show that the growth of initial perturbations is consistent with relativistic RTI operating in the jet collimation region. The contribution of RMI becomes important downstream from the collimation shock in agreement with theoretical expectations. Both instabilities reach non-linear scales above the shock convergence point and trigger strong turbulence, mixing jet with ambient matter. We devise an analytic solution for the mixing rate and show that it is sensitive to the external density gradients. Our results may be applied to different types of astrophysical objects. In particular, different contribution of interface instabilities is a natural explanation for the observed dichotomy between FR-I and FR-II radiogalaxies. The rapid slow-down in the jet of M87 is consistent with baryon entrainment from the circumnuclear matter with the observed density distribution. In microquasars, baryon loading triggered by interface instabilities is a probable reason for the low observed Lorentz factors. We show that the observed variability in gamma-ray bursts cannot come from mixing driven by interface instabilities and likely originates from the engine, suggesting the presence of magnetic fields in the jet.
description: accepted for publication to MNRAS; 18 pages, 10 figures
British Gallup Poll CQ 987A
Creators: name: Social Surveys (Gallup Poll) Limited
Publisher: name: Roper Center for Public Opinion Research
Year: 2013

description: Approval of government's record (1); satisfaction with Mrs. Margaret Thatcher as Prime Minister (1); Mr. Neil Kinnock as leader of the Labor Party (1); Mr. David Steel as leader of the Liberal party (1); Dr. David Owen as leader of the Social Democratic Party (1); voting in General Election (4); affiliation with political party (1); type of people you would not like to have as neighbors (1); serious social problems in Britain (1); possible cause for increase in crime and violence (14).
Impact of Clinical Pharmacists on Pneumococcal Vaccination Rates in a Military Medical Center
Creators: name: Carrillo, Jorge
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: Pneumococcal infections continue to be a significant cause of morbidity and mortality in the elderly and high risk population in the United States (US) (Plotkin, Orenstein, & Offit, 2012). Despite the fact that a pneumococcal vaccine has been available since the 1970s, vaccination rates for pneumococcus remain lower than desired. The Centers for Disease Control and Prevention’s Immunization Practices Advisory Group recommends a vaccine series of PCV13 and PPSV23 for all persons over 65 years of age and adults 19 to 64 years of age with high risks conditions (Tomczyk et al., 2014). A review of pneumococcal vaccination rates at Womack Army Medical Center (WAMC) showed opportunities for improvement, with pneumococcal vaccination rates for ORYX® (The Joint Commission performance measure) at 41% and Healthcare Effectiveness Data and Information Set (HEDIS) (National Committee for Quality Assurance performance measure) at 20%. A pilot immunization initiative at WAMC demonstrated that clinical pharmacists were able to increase pneumococcal vaccination rates. Opportunities to improve pneumococcal vaccination rates in the WAMC patient population are identified. The Department of Defense (DoD) implemented the Patient Centered Medical Home (PCMH) concept, which recognizes the importance of pharmacists to conduct comprehensive medication therapy management services. Military clinical pharmacists are considered healthcare extenders and are credentialed providers with prescribing privileges. They are in the optimal position to influence public health and improve utilization of pneumococcal vaccines in PCMH settings. Barriers that keep high-risk beneficiaries from obtaining pneumococcal vaccinations and healthcare providers from recommending and administering the vaccines are identified. Clinical pharmacists can work with multidisciplinary healthcare teams and hospital leaders to address most of the identified barriers. Despite the positive trends, more work is needed to standardize the way clinical pharmacists order and document the pneumococcal vaccines, and to spread clinical pharmacists’ immunization efforts to other PCMHs at WAMC.
Gap-opening Planets Make Dust Rings Wider
Creators: name: Bi, Jiaqing
name: Lin, Min-Kai
name: Dong, Ruobing
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: As one of the most commonly observed disk substructures, dust rings from high-resolution disk surveys appear to have different radial widths. Recent observations on PDS 70 and AB Aur reveal not only planets in the disk, but also the accompanying wide dust rings. We use three-dimensional dust-and-gas disk simulations to study whether gap-opening planets are responsible for the large ring width in disk observations. We find that gap-opening planets can widen rings of dust trapped at the pressure bump via planetary perturbations, even with the mid-plane dust-to-gas ratio approaching order unity and with the dust back-reaction accounted for. We show that the planet-related widening effect of dust rings can be quantified using diffusion-advection theory, and provide a generalized criterion for an equilibrated dust ring width in three-dimensional disk models. We also suggest that the ring width can be estimated using the gas turbulent viscosity $α_{\rm turb}$, but with cautions about the Schmidt number greater than order unity.
description: 17 pages, 6+3 figures, 2 tables, accepted in ApJ
title: Baseline diagnostics in patients with hepatocellular carcinoma: does total tumour burden measured by 3D quantitative tumour enhancement analysis on MRI predict overall survival?
Creators: name: Fleckenstein, Florian
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Liver
subject: Oncology
subject: Computer applications
subject: MR
subject: Image manipulation / Reconstruction
subject: Staging
subject: Computer Applications-3D
subject: Segmentation
subject: Cancer
subject: Outcomes
subject: Multidisciplinary cancer care

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Hepatocellular carcinoma (HCC) is the most common primary liver cancer and due to growing incidences, it represents a major global public health problem[1]. The initial evaluation of tumor characteristics at baseline imaging is a crucial step to...
Case report: neuroimaging analysis of pediatric ADHD-related symptoms secondary to hypoxic brain injury
Creators: name: Tran, Kevin
name: Wu, Joseph
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
subject: Mental Health

description: A 2-year-old male pediatric patient experienced a partial occlusion of the internal carotid and subsequent asphyxiation resulting in hypoxic brain injury that was later misdiagnosed as primary attention deficient hyperactivity disorder (ADHD). Imaging analyses using diffusion tensor imaging (DTI), positron emission tomography (PET), and magnetic resonance imaging (MRI) quantitative volumetrics (QV) were used nine years following the incident to identify whether his development of ADHD is of a primary heritability or secondary hypoxic brain injury sequelae. The patient’s DTI analysis generated decreases in fractional anisotropy (FA) values in the anterior corpus callosum, bilateral internal capsule, and hippocampus. Decreases in FA are seen in ADHD patients, but the degree of FA decrease in the patient under study is several orders of magnitude greater than in ADHD patients. Also, not normally observed in ADHD patients were decreases in the metabolism of the orbitofrontal cortex, anterior cingulate, left anterior insular cortex, and left striatum. Additionally, QV showed enlargements of various regions of the brain including the amygdala which is often cited in the literature to be reduced in ADHD patients. The diagnosis of this patient despite having non-characteristic neuroimaging data suggests a unique specificity of the hypoxic injury to the development of a secondary hypoxic brain injury caused ADHD.
Coupled Harmonic Systems as Quantum Buses in Thermal Environments
Creators: name: Nicacio, F.
name: Semião, F. L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work, we perform a careful study of an special arrangement of coupled systems that consists of two external harmonic oscillators weakly coupled to an arbitrary network (data bus) of strongly interacting oscillators. Our aim is to establish simple effective Hamiltonians and Liouvillians allowing an accurate description of the dynamics of the external oscillators regardless the topology of the network. By simple we mean an effective description using just a few degrees of freedom. In order to do that, we employed the machinery of symplectic formalism to generalize and expand the ideas presented in [1], where the specific case of an isolated (no thermal baths) chain is treated. With the methodology developed here, we are able to treat general topologies and, under certain structural conditions, to also include the interaction with external environments. In order to illustrate the predictability of the simplified dynamics, we present a comparative study with the predictions of the numerically obtained exact description in the context of propagation of energy through the network.
description: 15 pages, 13 figures, Published Version
ABC News/Washington Post Poll: War with Iraq Poll 3
Creators: name: ABC News
name: Washington Post
Publisher: name: Roper Center for Public Opinion Research
Year: 2003

description: George W. Bush handling of situation with Iraq and Saddam Hussein (1); Support/Oppose war with Iraq (2); How war is going for US and allies (1); US military aggressiveness (2); Iraqi resistance (1); Length of war with Iraq (2); Casualties (3); US providing humanitarian aid to Iraq (2); Most Iraqi people support US/Saddam Hussein (1); Tax cut plan (2); US/UN should take leading role in rebuilding Iraq (1).
Black Hole - Moving Mirror I: An Exact Correspondence
Creators: name: Anderson, Paul R.
name: Good, Michael R. R.
name: Evans, Charles R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: An exact correspondence is shown between a new moving mirror trajectory in (1+1)D and a spacetime in (1+1)D in which a black hole forms from the collapse of a null shell. It is shown that the Bogolubov coefficients between the "in" and "out" states are identical and the exact Bogolubov coefficients are displayed. Generalization to the (3+1)D black hole case is discussed.
description: Contribution to MG14 Proceedings, 5 pages, 1 figure
ABC News/Washington Post Poll: War with Iraq Poll 4
Creators: name: ABC News
name: Washington Post
Publisher: name: Roper Center for Public Opinion Research
Year: 2003

description: George W. Bush job performance (1); Support/Oppose war with Iraq (1); How war is going for US and allies (1); Iraqi resistance (1); Length of war (2); Casualties (3); Battle for Baghdad (1); Difficulty of war with Iraq underestimated/ not underestimated (2); Justification for war with Iraq (1); SARS (2); Worry more about terrorism/SARS (1).
Twist-dependent intra- and interlayer excitons in moire MoSe2 homobilayers
Creators: name: Villafañe, Viviana
name: Kremser, Malte
name: Hübner, Ruven
name: Petrić, Marko M.
name: Wilson, Nathan P.
name: Stier, Andreas V.
name: Müller, Kai
name: Florian, Matthias
name: Steinhoff, Alexander
name: Finley, Jonathan J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Optoelectronic properties of van der Waals homostructures can be selectively engineered by the relative twist angle between layers. Here, we study the twist-dependent moire coupling in MoSe2 homobilayers. For small angles, we find a pronounced redshift of the K-K and Γ-K excitons accompanied by a transition from K-K to Γ-K emission. Both effects can be traced back to the underlying moire pattern in the MoSe2 homobilayers, as confirmed by our low-energy continuum model for different moire excitons. We identify two distinct intralayer moire excitons for R-stacking, while H-stacking yields two degenerate intralayer excitons due to inversion symmetry. In both cases, bright interlayer excitons are found at higher energies. The performed calculations are in excellent agreement with experiment and allow us to characterize the observed exciton resonances, providing insight about the layer composition and relevant stacking configuration of different moire exciton species.
Are Governments and Aviation Industry Doing Enough to Fight Climate Change?
Creators: name: Poll, Ian
Publisher: name: Zenodo
Year: 2023
Subjects: aviation
aircraft
aeroplane
passenger
freight
climate
CO2
contrail
cirrus
NOX
global
warming
energy
efficiency
ETRW
growth
environment
pollution
economics
car
train
management
government
industry
airline
society
science
aerolectures
aerolectures2023

description: The current narrative surrounding aviation and its impact upon the environment is wholly negative. This presents a clear threat to the air transport industry and it has the potential to limit the growth that aviation needs for commercial success and the world needs in order to maintain economic growth and improved social wellbeing. Whilst, in principle at least, there are some technical solutions available for the removal of carbon from the aircraft, e.g. sustainable aviation fuels and electric aircraft, all are high risk, high cost and, above all, long term. However, aviation’s impact on the environment is not limited to CO2, nor is CO2 even the largest contributor. In this lecture, the broader environmental impact of aviation will be considered. It will be shown that the aviation’s overall climate impact is currently estimated to be twice that of its CO2 effect. It will be argued that “contrail management” is a major weapon in the fight against climate change. If it can be supported by the right government policies, it has the potential to make a real positive contribution and, in doing so, could change aviation’s narrative from negative to strongly positive.
description: Hamburg Aerospace Lecture Series --- Collection of Presentations --- http://www.AeroLectures.de
title: 3D printing of CT dataset: validation of an open-source and consumer-available workflow
Creators: name: Bortolotto, Chandra
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Computer applications
subject: CT
subject: Computer Applications-3D
subject: Quality assurance

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: In the last years 3D printing has progressively become available to consumer users thus drawing the attention of medical professionals. 3D printing can help simulating the intervention, simplifies prosthesis design and communication with the...
Dynamo saturation in direct simulations of the multi-phase turbulent interstellar medium
Creators: name: Bendre, A.
name: Gressel, O.
name: Elstner, D.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The ordered magnetic field observed via polarized synchrotron emission in nearby disc galaxies can be explained by a mean-field dynamo operating in the diffuse interstellar medium (ISM). Additionally, vertical-flux initial conditions are potentially able to influence this dynamo via the occurrence of the magneto-rotational instability (MRI). We aim to study the influence of various initial field configurations on the saturated state of the mean-field dynamo. This is motivated by the observation that different saturation behavior was previously obtained for different supernova rates. We perform direct numerical simulations (DNS) of three-dimensional local boxes of the vertically stratified, turbulent interstellar medium, employing shearing-periodic boundary conditions horizontally. Unlike in our previous work, we also impose a vertical seed magnetic field. We run the simulations until the growth of the magnetic energy becomes negligible. We furthermore perform simulations of equivalent 1D dynamo models, with an algebraic quenching mechanism for the dynamo coefficients. We compare the saturation of the magnetic field in the DNS with the algebraic quenching of a mean-field dynamo. The final magnetic field strength found in the direct simulation is in excellent agreement with a quenched $αΩ$~dynamo. For supernova rates representative of the Milky Way, field losses via a Galactic wind are likely responsible for saturation. We conclude that the relative strength of the turbulent and regular magnetic fields in spiral galaxies may depend on the galaxy's star formation rate. We propose that a mean field approach with algebraic quenching may serve as a simple sub-grid scale model for galaxy evolution simulations including a prescribed feedback from magnetic fields.
Gallup Poll # 1243G
Creators: name: Gallup
Publisher: name: Roper Center for Public Opinion Research
Year: 2011

description: Likelihood of voting; 1984 Presidential election; Reagan/ Bush vs. Mondale/Ferraro; favor/oppose: Social Security cost-of-living increases; relaxing pollution controls, nuclear freeze, spending for social programs, ERA, ban on abortions, tuition tax credits, reduced defense spending, school prayer, tax increases to reduce deficit; Congressional election: Republicans/Democrats; Reagan's job performance; complain about: drinking water purity, noise, air pollution, lack of open space, loss of farmland, deterioration of landscape; how often home to watch TV/listen to radio; occupation self/chief wage earner; responsibility for financial decisions; labor union membership; telephone; vegetable garden; concern over: pollution of rivers/lakes, damage by oil tanker spillage/discharge, air pollution, industrial/nuclear waste disposal; protection of environment/economic growth a priority; Reagan/Mondale.
Noncommutative SUSY Black Holes
Creators: name: Crespo-Hernández, A.
name: Mena-Barboza, E. A.
name: Sabido, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we propose a generalization to the Schwarzschild metric and define noncommutative SUSY black holes. We introduce the noncommutative deformation to the minisuperspace variables and derive the noncommutative supersymmetric (SUSY) Wheeler-DeWitt (WDW) equation for the Schwarzschild black hole. We calculate the metric and find that the singularities are not removed.
description: 11 pages, no figures. Accepted for publication in IJMPD
An Analysis of Immigrant Health Resources in the United States
Creators: name: Won, Nae
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: Throughout the ever-changing history of immigrants in the US, one thing has been common—the lack of health resources and structure to provide access to healthcare for immigrants. Recently, there have been some efforts to provide for immigrants’ needs, such as interpreter services and clinics for immigrant farmers; however, these programs have several shortfalls and do not resolve the issue. The illusion of services and lack of support can end up harming immigrants even further by eroding trust and diverting public attention away from immigrants’ health care needs. Despite immigrants having healthier status at the point of entry, their health declines over the time of residing within the United States. Some barriers to health among immigrants include: time and cost, language barrier, discrimination, cultural differences, lack of trust in healthcare providers and local authorities, and location and access. Immigrant health status also varies by age, education, gender, socioeconomic status, acculturation, legal status, and residing community. Immigrant health can impact overall society with high healthcare expenditures due to the need for specialty care. There are potential interventions that can help reduce these barriers like building partnerships, working with religious and cultural associations to build a support system, providing more bilingual staff, and educating immigrant communities on resources available.
title: Implementation of an innovative management strategy of dose and good practices in computed tomography
Creators: name: Gardavaud, Francois
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Radioprotection / Radiation dose
subject: CT
subject: Radiation safety

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Introduction Owing to broader indications, CT use is increasing around the world. In 2012, the French Institute for Radiological Protection and Nuclear Safety (Institut de Radioprotection et de Sûreté Nucléaire, IRSN) estimated that 71 % of the...
Gallup Poll # 1247G
Creators: name: Gallup
Publisher: name: Roper Center for Public Opinion Research
Year: 1985

description: Reagan's performance; satisfaction with: U.S., personal life, present housing, standard of living, household income, family life, health, job, free time, nation's governing, democracy, poor/needy; federal budget deficit; distribution of wealth; causes of poverty; percentage below poverty line; Reagan's economic policies and family's financial situation; how often home to watch TV/listen to radio; occupation self/chief wage earner; responsibility for financial decisions; labor union membership.
title: Significant role of ultrasound imaging as biofeedback tool allowing for initial design and further modification of original physiotherapy protocol created for patients who underwent achilles tendon reconstruction
Creators: name: Rosinska, Agnieszka
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Musculoskeletal soft tissue
subject: Musculoskeletal system
subject: Ultrasound
subject: Health policy and practice
subject: Cost-effectiveness
subject: Treatment effects
subject: Tissue characterisation
subject: Quality assurance
subject: Athletic injuries

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The study’s aim was to indicate the significance of ultrasound examination in physiotherapy of patients who underwent the Achilles tendon reconstruction, paying special attention to the occurrence of the procedure’s most common complication:...
Considering Consolidation to Build Stronger Local Health Departments
Creators: name: Berg, Jamie
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: Local public health departments are facing extreme budget cuts, which are forcing departments to eliminate programs, staff, and reduce the level of services they are providing to their communities. This works against the mission of improving the health of communities. The expectations and demands of public health are increasing, yet funding to support programs is decreasing. Consolidation of local health departments is one solution to retaining staff and services, while trying to operate with restricted budgets. Consolidation could help relieve the burden on taxpayers and still provide the services that people want, need, and deserve. There are many potential opportunities associated with consolidation such as: achieving possible cost savings; increasing capacity of services and providing essential services; being better prepared for public health emergencies and future state mandates; and reducing duplication of services. While there are many opportunities linked with consolidation, there are many concerns and hardships as well, such as loss of local control, minimal cost savings, individual community needs not being a priority, negotiating a contract among multiple communities, and the overall feeling that change can be difficult. Consolidation may work for smaller health departments who are geographically close, have similarities in their populations, and are common in per capita wealth. When deciding whether to consolidate, a formal decision process should be followed. Strong leadership must be present, as well as support from elected officials, boards of health, residents of the communities, and staff members.
Boundary and interface methods for energy stable finite difference discretizations of the dynamic beam equation
Creators: name: Eriksson, Gustav
name: Werpers, Jonatan
name: Niemelä, David
name: Wik, Niklas
name: Zethrin, Valter
name: Mattsson, Ken
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: G.1.8
subject: 65M06

description: We consider energy stable summation by parts finite difference methods (SBP-FD) for the homogeneous and piecewise homogeneous dynamic beam equation (DBE). Previously the constant coefficient problem has been solved with SBP-FD together with penalty terms (SBP-SAT) to impose boundary conditions. In this work we revisit this problem and compare SBP-SAT to the projection method (SBP-P). We also consider the DBE with discontinuous coefficients and present novel SBP-SAT, SBP-P and hybrid SBP-SAT-P discretizations for imposing interface conditions. Numerical experiments show that all methods considered are similar in terms of accuracy, but that SBP-P can be more computationally efficient (less restrictive time step requirement for explicit time integration methods) for both the constant and piecewise constant coefficient problems.
description: 28 pages, 5 figures. Submitted to Journal of Computational Physics 26 July 2021
Gallup Poll # 1249G
Creators: name: Gallup
Publisher: name: Roper Center for Public Opinion Research
Year: 2014

description: Reagan's performance, historical status; most important problem; amount for defense/social programs; Star Wars proposal: opinion, effect on arms agreement/world safety; vigilantism; personal assault; religion; how often home to watch TV/listen to radio; occupation self/ chief wage earner; responsibility for financial decisions; labor union membership; women's hair care practices.