cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
EFFECTS OF ACTION OBSERVATION TRAINING IN PATIENTS WITH PARKINSON DISEASE - A SYSTEMATIC REVIEW AND META-ANALYSIS
Creators: name: Amaravadi, Sampath kumar
name: SALEH, SUMAIYA
name: JOSEPH, SARAH
name: NAGOGO, RUFAIDA
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Physiotherapy
subject: Medicine and Health Sciences
subject: Rehabilitation and Therapy
subject: Action observation treatment
subject: Parkinsons disease
subject: physiotherapy

description: Parkinson's disease (PD) is one of the conditions known as motor system disorders caused by the loss of dopamine-producing brain cells. It is the second most common age-related neurodegenerative condition following Alzheimer's disease. Action Observation Training (AOT) is a rehabilitative approach grounded in the recent discovery of mirror neuron systems. This approach helps to promote functional re-organization within the brain via the activation of mirror neurons by facilitating neuroplasticity and motor recovery. According to various studies, AOT improved motor recovery in Parkinson's disease.
Adaptive Sliding Mode Controller and Observer for Altitude and Attitude Control of a Quadrotor
Creators: name: telli, khaled
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 400705
subject: Control engineering

description: This paper introduces an adaptive sliding mode control approach for stabilizing and tracking trajectories with a quadrotor. The closed-loop control system comprises three main components: the first addresses altitude and attitude stabilization as well as trajectory tracking. The second component is dedicated to parameter estimation, particularly mass estimation. The third part focuses on observing full states. The control method considers disturbances, sensor noise, and parameter uncertainties, with sliding mode control laws and observer adaptation designed based on the Lyapunov stability principle. Numerical simulations demonstrate the efficacy of the proposed control technique.
title: Normative values for volume and fat content of the gluteus muscles and their dependence on side, age and gender: preliminary results in a healthy population
Creators: name: Marcon, Magda
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Musculoskeletal system
subject: Extremities
subject: MR
subject: Segmentation
subject: Epidemiology

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Abductor muscles, gluteus medius (GMed) and minimus (GMin) have a crucial role in providing stability and mobility of the hips. Gluteal muscles atrophy and fatty infiltration have been often described in association with pathological conditions such...
Uninsured Children in the United States: An Investigation of lnpatient Mortality
Creators: name: VanScoyoc, Erin
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2004

description: Objective: We examined whether uninsured children in the United States have an increased risk of inpatient mortality compared to children with private or Medicaid insurance. Methods: The entire sample of pediatric discharges <=18 years excluding neonates from the National Inpatient Sample (NIS) database from 1997 to 2001 was used for this study. We calculated the inpatient mortality rate by dividing the weighted number of deaths over the five years of the study by the total weighted encounters, and used the Student t test to statistically compare the inpatient mortality rate of uninsured children to children with private or Medicaid insurance. We also examined the inpatient mortality rate of children with two catastrophic diseases of childhood, congenital heart disease and cancer, and tested whether uninsured children with these conditions have an increased risk of inpatient mortality. Results: Uninsured children have a significantly higher inpatient mortality rate than children with either Medicaid or private insurance. The all-cause inpatient mortality rate for uninsured children was 0.61, compared with an inpatient mortality rate of 0.39 for children with Medicaid insurance, and 0.36 for children with private insurance. This disparity in inpatient mortality rate was also observed in children with catastrophic diseases of childhood. Among children with congenital heart disease as the primary ICD-9 diagnosis at discharge, uninsured children had an inpatient mortality rate of 3.23, compared to an inpatient mortality rate of 2.65 in children with Medicaid insurance, and 2.02 among children with private insurance. Among children with malignant neoplasm as any ICD-9 diagnosis at discharge, uninsured children had an inpatient mortality rate of 1.69 compared to an inpatient mortality rate of 1.2 in children with private insurance. Children with Medicaid insurance had an inpatient mortality rate of 1.77. Conclusions: Despite the progress made by the Medicaid expansion and the SCRIP program towards insuring children in the late 1990s, more than one in ten children in the United States remain uninsured. These children have an increased risk of inpatient mortality compared to children with private or Medicaid insurance. Whether the increased mortality rate among uninsured children is due to lower access to care, a less safe environment, or poorer inpatient care, in light of our results it is important to continue the progress we have made toward insuring all children in the United States.
Inheritance in Object-Oriented Knowledge Representation
Creators: name: Terletskyi, Dmytro
Publisher: name: arXiv
Year: 2015
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: I.2.4; D.1.5; D.3.3

description: This paper contains the consideration of inheritance mechanism in such knowledge representation models as object-oriented programming, frames and object-oriented dynamic networks. In addition, inheritance within representation of vague and imprecise knowledge are also discussed. New types of inheritance, general classification of all known inheritance types and approach, which allows avoiding in many cases problems with exceptions, redundancy and ambiguity within object-oriented dynamic networks and their fuzzy extension, are introduced in the paper. The proposed approach bases on conception of homogeneous and inhomogeneous or heterogeneous class of objects, which allow building of inheritance hierarchy more flexibly and efficiently.
description: in Information and Software Technologies, Communications in Computer and Information Science, Springer, 2015
Thermodynamics of modulation of interaction of α-helix inducer 2, 2, 2-trifluoroethanol with lysozyme in presence of cationic, anionic and non-ionic surfactants
Creators: name: Arya, Anju
name: Jain, Anu
name: Kishore, Nand
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
classificationCode: 29999
subject: Physical Sciences not elsewhere classified
subject: Medicine
classificationCode: 39999
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
classificationCode: 69999
subject: Biological Sciences not elsewhere classified
classificationCode: 60506
subject: Virology
subject: Computational Biology

description: The interactions of anionic sodium dodecyl sulphate (SDS), cationic cetyltrimethylammonium bromide (CTAB) and nonionic triton X-100 (TX-100) surfactants with lysozyme at pH = 2.4 have been studied individually as well as in combination with 2,2,2-trifluoroetanol (TFE). Urea has also been used in combination with surfactants. By using these combinations, efforts have been made to obtain partially folded conformations of the protein in the presence of surfactants and effect of α-helix inducer 2,2,2-trifluoroethanol on these intermediate states. Thermodynamic analysis of all these interactions has been done employing a combination of UV-visible, fluorescence and circular dichroism spectroscopies. The results have been correlated with each other and characterized qualitatively as well as quantitatively. At lower concentration of surfactant, the thermodynamic parameters indicated the destabilizing effect of SDS, stabilizing effect of CTAB and unappreciable destabilizing impact of TX-100 on lysozyme. The enhancement in destabilization effect or reduction in stabilization effect of surfactants on lysozyme in the presence of TFE and urea has also been indicated. Communicated by Ramaswamy H. Sarma
Statistical Study of the Star Formation Efficiency in Bars: Is Star Formation Suppressed in Gas-Rich Bars?
Creators: name: Maeda, Fumiya
name: Egusa, Fumi
name: Ohta, Kouji
name: Fujimoto, Yusuke
name: Habe, Asao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The dependence of star formation efficiency (SFE) on galactic structures, especially whether the SFE in the bar region is lower than those in the other regions, has recently been debated. We report the SFEs of 18 nearby gas-rich massive star-forming barred galaxies with a large apparent bar major axis ($\geqq 75^{\prime\prime}$). We statistically measure the SFE by distinguishing the center, bar-end, and bar regions for the first time. The molecular gas surface density is derived from archival CO(1-0) and/or CO(2-1) data by assuming a constant CO-to-H$_2$ conversion factor ($α_{\rm CO}$), and the star formation rate surface density is derived from a linear combination of far-ultraviolet and mid-infrared intensities. The angular resolution is $15^{\prime\prime}$, which corresponds to $0.3 - 1.8~\rm kpc$. We find that the ratio of the SFE in the bar to that in the disk was systematically lower than unity (typically $0.6-0.8$), which means that the star formation in the bar is systematically suppressed. Our results are inconsistent with similar recent statistical studies that reported that SFE tends to be independent of galactic structures. This inconsistency can be attributed to the differences in the definition of the bar region, spatial resolution, $α_{\rm CO}$, and sample galaxies. Furthermore, we find a negative correlation between SFE and velocity width of the CO spectrum, which is consistent with the idea that the large dynamical effects, such as strong shocks, large shear, and fast cloud-cloud collisions caused by the noncircular motion of the bar, result in a low SFE.
description: 27 pages, 11 figures, accepted for publication in ApJ
Simultaneous gas accretion onto a pair of giant planets: Impact on their final mass and on the protoplanetary disk structure
Creators: name: Bergez-Casalou, Camille
name: Bitsch, Bertram
name: Raymond, Sean N.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Several planetary systems are known to host multiple giant planets. However, when two giant planets are accreting from the same disk, it is unclear what effect the presence of the second planet has on the gas accretion process of both planets. In this paper we perform long-term 2D isothermal hydrodynamical simulations (over more than 0.5 Myrs) with the FARGO-2D1D code, considering two non-migrating planets accreting from the same gaseous disk. We find that the evolution of the planets' mass ratio depends on gap formation. However, in all cases, when the planets start accreting at the same time, they end up with very similar masses (0.9 $
description: Accepted to A&A
TROM: A Testing-based Method for Finding Transcriptomic Similarity of Biological Samples
Creators: name: Li, Wei Vivian
name: Chen, Yiling
name: Li, Jingyi Jessica
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Genomics (q-bio.GN)
subject: FOS: Biological sciences

description: Comparative transcriptomics has gained increasing popularity in genomic research thanks to the development of high-throughput technologies including microarray and next-generation RNA sequencing that have generated numerous transcriptomic data. An important question is to understand the conservation and differentiation of biological processes in different species. We propose a testing-based method TROM (Transcriptome Overlap Measure) for comparing transcriptomes within or between different species, and provide a different perspective to interpret transcriptomic similarity in contrast to traditional correlation analyses. Specifically, the TROM method focuses on identifying associated genes that capture molecular characteristics of biological samples, and subsequently comparing the biological samples by testing the overlap of their associated genes. We use simulation and real data studies to demonstrate that TROM is more powerful in identifying similar transcriptomes and more robust to stochastic gene expression noise than Pearson and Spearman correlations. We apply TROM to compare the developmental stages of six Drosophila species, C. elegans, S. purpuratus, D. rerio and mouse liver, and find interesting correspondence patterns that imply conserved gene expression programs in the development of these species. The TROM method is available as an R package on CRAN (http://cran.r-project.org/) with manuals and source codes available at http://www.stat.ucla.edu/ jingyi.li/software-and-data/trom.html.
The H$α$ and [O III] $λ5007$ Luminosity Functions of $1.2
Creators: name: Nagaraj, Gautam
name: Ciardullo, Robin
name: Bowman, William P.
name: Lawson, Alex
name: Gronwall, Caryl
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Euclid and the Roman Space Telescope (Roman) will soon use grism spectroscopy to detect millions of galaxies via H$α$ and [O III] $λ5007$ emission. To better constrain the expected galaxy counts from these instruments, we use a vetted sample of 4,239 emission-line galaxies from the 3D-HST survey to measure the H$α$ and [O III] $λ5007$ luminosity functions between $1.16
description: 21 pages, 10 figures; Accepted for publication in ApJ
Using conjoint analysis to assess pediatric gastroenterologists' preferences regarding the management of pediatric Crohn's Disease
Creators: name: McManus, Shilpa Saxena
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: Background: Difficulties in diagnosis, treatment, and chronic management of Crohn's Disease (CD) may explain the variation in diagnostic evaluation and treatment therapies seen among providers. Our systematic literature review shows that published guidelines do not fully address management of pediatric CD. Therefore, using the Quality Improvement Model, we can systematically gather data from experts on the best way to change current CD management. Objective: To determine if conjoint analysis can summarize current beliefs among pediatric gastroenterologists on the relative importance of implementing evidence-based changes to improve outcomes of children with CD. Methods: We administered an online survey, Physicians Beliefs on Crohn's Management, to a convenience sample of 12 members of the Pediatric Inflammatory Bowel Disease (PIBD) Network. We asked participants to rank 16 different clinic scenarios based on which ones were most likely to improve patient outcomes and analyzed the ranking through conjoint analysis. Results: One physician completed the survey for a response rate of 8.3%. Results suggest that decreasing steroid use is most likely to improve outcomes while planned care and optimizing nutrition are least likely to improve outcomes. We found the largest effect of interaction to be between standardizing diagnostic evaluation and planned care. Conclusion: Conjoint analysis has the potential to summarize current beliefs among pediatric gastroenterologists regarding CD management, but before it can be used reliably, it needs to be tested on a larger sample.
Effects of the Central Mass Concentration on Bar Formation in Disk Galaxies
Creators: name: Jang, Dajeong
name: Kim, Woong-Tae
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: While bars are common in disk galaxies, their formation conditions are not well understood. We use $N$-body simulations to study bar formation and evolution in isolated galaxies consisting of a stellar disk, a classical bulge, and a dark halo. We consider 24 galaxy models that are similar to the Milky Way but differ in the mass and compactness of the classical bulge and halo concentration. We find that the bar formation requires $(Q_{T,\text{min}}/1.2)^2 + (\text{CMC}/0.05)^2\lesssim 1$, where $Q_{T,\text{min}}$ and CMC refers to the minimum value of the Toomre stability parameter and the central mass concentration, respectively. Bars tend to be stronger, longer, and rotate slower in galaxies with a less massive and less compact bulge and halo. All bars formed in our models correspond to slow bars. A model with the bulge mass of $\sim10$--$20$\% of the disk under a concentrated halo produces a bar similar to the Milky-Way bar. We discuss our findings in relation to other bar formation criteria suggested by previous studies.
description: Accepted for publication in ApJ
Quadrature-based Lattice Boltzmann model for non-equilibrium dense gas flows
Creators: name: Busuioc, S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The Boltzmann equation becomes invalid as the size of gas molecules is comparable with the average intermolecular distance. A better description is provided by the Enskog collision operator, which takes into account the finite size of gas molecules. This extension implies non-local collisions as well as an increase in collision frequency, making it computationally expensive to solve. An approximation of the Enskog collision operator, denoted the simplified Enskog collision operator, is used in this work to develop a quadrature-based Lattice Boltzmann model for non-ideal monatomic dense gases. The Shakhov collision term is implemented in order to fine-tune the Prandtl number. This kinetic model is shown to be able to tackle non-equilibrium flow problems of dense gases, namely the sound wave and the shock wave propagation. The results are compared systematically with the results of the more accurate but computationally intensive particle method of solving the Enskog equation. The model introduced in this paper is shown to have good accuracy for small to moderate denseness of the fluid (defined as the ratio of the molecular diameter to the mean free path) and, due to the efficiency in terms of the computational time, it is suitable for practical applications.
description: 16 pages, 8 figures
title: Evaluation of correlations among apparent diffusion coefficient and permeability parameters from dynamic contrast-enhanced MR in brain tumour parenchyma and peritumoral area
Creators: name: Zhao, Jing
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: CNS
subject: Oncology
subject: MR
subject: MR-Diffusion/Perfusion
subject: Contrast agent-intravenous
subject: Imaging sequences
subject: Cancer
subject: Haemodynamics / Flow dynamics

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Brain tumors are a diverse group of neoplasms and the second leading cause of cancer-related deaths in male ages 20-39 (years of age) [1]. Each brain tumor has their own unique tumor microenvironment and it is different from tumor parenchyma (TP) to...
Open versus Endovascular Abdominal Aortic Aneurysm Repair in VA Hospitals
Creators: name: Bush, Ruth L., MD
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2005

description: Background: Endovascular abdominal aortic aneurysm repair (EVAR), when compared to conventional open surgical repair, has been shown to reduce perioperative morbidity and mortality. A retrospective cohort study was performed with data from the Department of Veterans Affairs to examine outcomes in routine daily practice following EVAR and open surgical repair. Methods: In this study, I examined 30-day mortality, 1-year survival, and postoperative complications in 1957 patients who underwent elective AAA repair (EVAR n=717 (36.6%); open n=l240 (63.4%)) at 123 VA hospitals between May 1, 2001 and September 30, 2003. Also, this review investigated the influence of patient, operative, and hospital variables on outcome, and used propensity scoring to adjust for the nonrandom allocation of patients to either EVAR or open procedures. Results: Patients undergoing EVAR had significantly lower 30 day (3.1% vs. 5.7%, p=0.0079) and 1 year mortality (8.4% vs. 12.0%, p=0.0121) than patients having open repair. EVAR was positively and independently associated with a decrease in 30-day postoperative mortality (adjusted OR=0.58; 95% CI=0.35, 0.97; p=0.0367). The risk of any perioperative complication was much less following EVAR (4.5% vs. 14.2%; p<0.0001; unadjusted OR 0.48; 95% CI =0.37, 0.63; p<0.001). Patients operated on at low volume hospitals (25% of entire cohort) were more likely to have had open repair (31.6% compared to 15.9% EVAR; p <0.001) as well as a two-fold increased adjusted 30-day mortality risk (OR=2.06; 95% CI=1.32, 3.26; p=0.0015). Conclusions: In routine daily practice, patients presenting for elective AAA repair who undergo EVAR have substantially lower perioperative mortality and morbidity rates compared to patients having open repair. The benefits of a minimally invasive approach were readily apparent in this cohort; however, caution should be exercised in choosing EVAR for all elective AAA repairs until longer-term data on device durability are available. Furthermore, widely available screening programs may aid in the early detection of AAA, which would further facilitate timely surgical intervention and, ultimately, improve outcomes.
Topological Hall Effect Driven by Short-Range Magnetic Orders in EuZn$_2$As$_2$
Creators: name: Yi, Enkui
name: Zheng, Dong Feng
name: Pan, Feihao
name: Zhang, Hongxia
name: Wang, Bin
name: Chen, Bowen
name: Wu, Detong
name: Liang, Huili
name: Mei, Zeng Xia
name: Wu, Hao
name: Yang, Shengyuan A.
name: Cheng, Peng
name: Wang, Meng
name: Shen, Bing
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Short-range (SR) magnetic orders such as magnetic glass orders or fluctuations in a quantum system usually host exotic states or critical behaviors. As the long-range (LR) magnetic orders, SR magnetic orders can also break time-reversal symmetry and drive the non-zero Berry curvature leading to novel transport properties. In this work, we report that in EuZn$_2$As$_2$ compound, besides the LR A-type antiferromagnetic (AF) order, the SR magnetic order is observed in a wide temperature region. The magnetization measurements and electron spin resonance (ESR) measurements reveal the ferromagnetic (FM) correlations for this SR magnetic order which results in an obvious anomalous Hall effect above the AF transition. Moreover the ESR results reveal that this FM SR order coexists with LR AF order exhibiting anisotropic magnetic correlations below the AF transition. The interactions of LR and SR magnetism evolving with temperature and field can host non-zero spin charility and berry curvature leading the additional topological Hall contribution even in a centrosymmetric simple AF system. Our results indicate that EuZn$_2$As$_2$ is a fertile platform to investigate exotic magnetic and electronic states.
description: 6 pages, 4 figures
Toward Topologically Based Upper Bounds on the Number of Power Flow Solutions
Creators: name: Molzahn, Daniel K
name: Mehta, Dhagash
name: Niemerg, Matthew
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optimization and Control (math.OC)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: The power flow equations, which relate power injections and voltage phasors, are at the heart of many electric power system computations. While Newton-based methods typically find the "high-voltage" solution to the power flow equations, which is of primary interest, there are potentially many "low-voltage" solutions that are useful for certain analyses. This paper addresses the number of solutions to the power flow equations. There exist upper bounds on the number of power flow solutions; however, there is only limited work regarding bounds that are functions of network topology. This paper empirically explores the relationship between the network topology, as characterized by the maximal cliques, and the number of power flow solutions. To facilitate this analysis, we use a numerical polynomial homotopy continuation approach that is guaranteed to find all complex solutions to the power flow equations. The number of solutions obtained from this approach upper bounds the number of real solutions. Testing with many small networks informs the development of upper bounds that are functions of the network topology. Initial results include empirically derived expressions for the maximum number of solutions for certain classes of network topologies.
description: 6 pages, 5 figures. Submitted to special session at the IEEE American Control Conference
title: Development of a prototype quality control process for spectral CT
Creators: name: Cody, Dianna
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Radiation physics
subject: CT-Quantitative
subject: Technology assessment
subject: Image verification

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: While it is understood that quality control (QC) is a vital step in ensuring the satisfactory operating condition of computed tomography (CT) equipment [1], limited attention has been devoted to QC for dual-energy CT (DECT) scanning. A prototype QC...
Beyond the Skin Examination: Public Awareness as a Melanoma Prevention Method
Creators: name: Brooks, Crystal
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: Background: Melanoma incidence is increasing in the US, with 62,190 Americans projected to be diagnosed with some form ofthe skin cancer in 2006-05. Despite its increasing incidence and the assumption that early intervention can lead to a cure, no preventive method is supported by defmitive evidence, and mortality rates remain relatively stable. Most funding has been devoted to education campaigns advocating sun avoidance and sunscreen use (primary prevention) and regular skin examinations (secondary prevention), especially among populations considered to be at highest risk. Recently campaigns encouraging patient awareness and early detection have gained attention as a tertiary prevention method. Objective: This research project will review current methods used in melanoma prevention and propose an education-oriented approach to decreasing morbidity and mortality from melanoma. Methods: The most recent melanoma literature will be reviewed systematically, with an emphasis on prevention methods currently being employed. A manuscript will be drafted of our proposed research project, a 40-question survey evaluating pre-disease awareness in newly diagnosed melanoma patients. Conclusion: There is insufficient evidence to support or disprove any particular melanoma prevention modality currently being used. Based on available information, we believe greater improvement in melanoma statistics will be realized if prevention methods are broader and include greater emphasis on public education campaigns so that patients are aware of what skin lesions warrant medical evaluation. Still, we concede that more research is needed. First, future studies should ascertain the genetic and environmental etiology of melanoma. Next, epidemiologic investigations should better establish which populations have the highest rates of mortality, focusing on the histological classification of highrisk lesions in addition to the demographic characteristics of high-risk patients. Lastly, current prevention plans should be evaluated on a large-population scale with future works addressing the associated costs and estimated effects on both the morbidity and mortality of melanoma.
Two temperate Earth-mass planets orbiting the nearby star GJ1002
Creators: name: Mascareño, A. Suárez
name: González-Álvarez, E.
name: Osorio, M. R. Zapatero
name: Lillo-Box, J.
name: Faria, J. P.
name: Passegger, V. M.
name: Hernández, J. I. González
name: Figueira, P.
name: Sozzetti, A.
name: Rebolo, R.
name: Pepe, F.
name: Santos, N. C.
name: Cristiani, S.
name: Lovis, C.
name: Silva, A. M.
name: Ribas, I.
name: Amado, P. J.
name: Caballero, J. A.
name: Quirrenbach, A.
name: Reiners, A.
name: Zechmeister, M.
name: Adibekyan, V.
name: Alibert, Y.
name: Béjar, V. J. S.
name: Benatti, S.
name: D'Odorico, V.
name: Damasso, M.
name: Delisle, J. -B.
name: Dreizler, P. Di Marcantonio S.
name: Ehrenreich, D.
name: Hatzes, A. P.
name: Hara, N. C.
name: Henning, Th.
name: Kaminski, A.
name: López-González, M. J.
name: Martins, C. J. A. P.
name: Micela, G.
name: Montes, D.
name: Pallé, E.
name: Pedraz, S.
name: Rodríguez, E.
name: Rodríguez-López, C.
name: Tal-Or, L.
name: Sousa, S.
name: Udry, S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the discovery and characterisation of two Earth-mass planets orbiting in the habitable zone of the nearby M-dwarf GJ~1002 based on the analysis of the radial-velocity (RV) time series from the ESPRESSO and CARMENES spectrographs. The host star is the quiet M5.5~V star GJ~1002 (relatively faint in the optical, $V \sim 13.8$ mag, but brighter in the infrared, $J \sim 8.3$ mag), located at 4.84 pc from the Sun. We analyse 139 spectroscopic observations taken between 2017 and 2021. We performed a joint analysis of the time series of the RV and full-width half maximum (FWHM) of the cross-correlation function (CCF) to model the planetary and stellar signals present in the data, applying Gaussian process regression to deal with the stellar activity. We detect the signal of two planets orbiting GJ~1002. GJ~1002~b is a planet with a minimum mass $m_p \sin i $ of 1.08 $\pm$ 0.13 M$_{\oplus}$ with an orbital period of 10.3465 $\pm$ 0.0027 days at a distance of 0.0457 $\pm$ 0.0013 au from its parent star, receiving an estimated stellar flux of 0.67 $F_{\oplus}$. GJ~1002 c is a planet with a minimum mass $m_p \sin i $ of 1.36 $\pm$ 0.17 M$_{\oplus}$ with an orbital period of 21.202 $\pm$ 0.013 days at a distance of 0.0738 $\pm$ 0.0021 au from its parent star, receiving an estimated stellar flux of 0.257 $F_{\oplus}$. We also detect the rotation signature of the star, with a period of 126 $\pm$ 15 days. GJ~1002 is one of the few known nearby systems with planets that could potentially host habitable environments. The closeness of the host star to the Sun makes the angular sizes of the orbits of both planets ($\sim$ 9.7 mas and $\sim$ 15.7 mas, respectively) large enough for their atmosphere to be studied via high-contrast high-resolution spectroscopy with instruments such as the future spectrograph ANDES for the ELT or the LIFE mission.
description: 23 pages, 20 figures, 3 tables ; Replacement to fix some typos
Ionic transport through sub-10 nm diameter hydrophobic high-aspect ratio nanopores: experiment, theory and simulation
Creators: name: Balme, Sébastien
name: Picaud, Fabien
name: Manghi, Manoel
name: Palmeri, John
name: Bechelany, Mikhael
name: Cabello-Aguilar, Simon
name: Abou-Chaaya, Adib
name: Miele, Philippe
name: Balanzat, Emmanuel
name: Janot, Jean Marc
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Fundamental understanding of ionic transport at the nanoscale is essential for developing biosensors based on nanopore technology and new generation high-performance nanofiltration membranes for separation and purification applications. We study here ionic transport through single putatively neutral hydrophobic nanopores with high aspect ratio (of length L=6 μm with diameters ranging from 1 to 10 nm) and with a well controlled cylindrical geometry. We develop a detailed hybrid mesoscopic theoretical approach for the electrolyte conductivity inside nanopores, which considers explicitly ion advection by electro-osmotic flow and possible flow slip at the pore surface. By fitting the experimental conductance data we show that for nanopore diameters greater than 4 nm a constant weak surface charge density of about 10$^{-2}$ C m$^{-2}$ needs to be incorporated in the model to account for conductance plateaus of a few pico-Siemens at low salt concentrations. For tighter nanopores, our analysis leads to a higher surface charge density, which can be attributed to a modification of ion solvation structure close to the pore surface, as observed in the molecular dynamics simulations we performed.
description: 14 pages, Supplementary information available on request
Sleep Disturbance, Affective Symptoms, and their Relationship to Post-Concussion Syndrome: A Systematic Review and Research Proposal
Creators: name: Palm, Robert
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: In the United States each year, there are an estimated 1.6 to 3.8 million sport-related traumatic brain injuries (TBI), which includes concussions. Due to increasing public awareness of concussion, there has been a significant amount of research and policy effort focused on reducing the overall number of concussion events. However, there has been less focus on the sequelae of concussion, including post-concussion syndrome (PCS). PCS can involve a variety of physical, cognitive, and psychiatric symptoms, and these symptoms persist for months or even years in some patients recovering from concussion. However, PCS has traditionally been diagnosed and treated as a single clinical entity. Many of the studies identified in the included systematic review used PCS diagnosis as the principal outcome, rather than tracking individual symptoms. Only one study examined potential interactions between PCS symptoms, finding that the presence of sleep disturbance was associated with concomitant depressive symptoms. Here, we propose a prospective cohort study that will involve using previously-validated survey instruments to track sleep disturbance and affective symptoms in particular, and quality of life and post-concussion symptoms more generally, to identify and describe relationships between predictor-outcome pairs that show potential for statistical significance, as well as determining direction of causality. The patients included in this study will be recruited from a University-based Post-Concussion Clinic. Each subject will undergo specialized measurements such as posturography and neurocognitive assessment, which may also be examined as potential predictors. The predictor-outcome relationships will be described using either summary measures (for pairs with dichotomous inputs) or an as-yet-undetermined regression model (for pairs with continuous inputs). This study comprises a first step towards the creation of targeted treatments for PCS, a strategy that would lower the public health burden of concussion.
Black-Box System Identification for Low-Cost Quadrotor Attitude at Hovering
Creators: name: telli, khaled
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 400705
subject: Control engineering

description: The accuracy of dynamic modelling of unmanned aerial vehicles, specifically quadrotors, is gaining importance since strict conditionalities are imposed on rotorcraft control. The system identification plays a crucial role as an effective approach for the problem of the fine-tuning dynamic models for applications such control system design and as handling quality evaluation. This paper focuses on black-box identification, describing the quadrotor dynamics based on experimental setup through sensor preparation for data collection, modelling, control design, and verification stages.
How useful are patient portals for hospitals in rural areas?
Creators: name: Lorenz, Eva
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: Electronic medical records (EMR) are a relatively new development and the move away from paper records is incentivized by allocating funds to hospitals who undertake this change. In part, the funds are allocated as part of Meaningful Use, which also sets quantitative goals for hospitals in conjunction with the move towards EMR. Hospitals in poor, rural areas of North Carolina with a high percentage of Medicaid patients must meet Meaningful Use requirements in order to receive maximum funding under these federal guidelines. As part of my internship, I focused on the usage of the patient portal at Halifax Regional Medical Center (HRMC), a hospital in one of the poorest counties in North Carolina. The results indicated that the poor and aging population in the area was ill prepared to handle electronic communications with providers through a portal, yet HRMC would still be subject to the requirement under the proposed MU Stage 3 to enroll 25% of patients in the portal. While these numbers seem reasonable for counties with a highly educated workforce and availability of high education institutions, Halifax County is struggling to educate adults about computer usage and use of email as a means of secure communication. In addition, HRMC is competing with primary care practices, where many patients regular visit physicians, for portal usage since some physicians outsource lab testing to HRMC, but will use their own portal to make the results available to patients. HRMC is used as an example of the effort undertaken by rural hospitals in poor counties within North Carolina to meet Meaningful Use Requirements; this effort is not only taking up significant resources in developing and administrating the portal, but also effort in getting patients to enroll in the portal and providing sufficient security for the patient data housed in the portal. This paper attempts to determine how useful resources spent towards enrolling patients in portals are for rural hospitals and whether the funds spent on a portal may not be better used towards getting the population ready for the use of a portal and securing the information in the portal. Using studies about what prerequisites must be met for an effective use of a patient portal, this paper aims at determining whether portal usage should be priority for rural hospitals. Or whether funds should be better spent on securing EMR and delay portal usage in favor of securing electronic records first.
title: Mammographic compression - a need for mechanical standardization
Creators: name: den Heeten, Gerard
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Breast
subject: Mammography
subject: Physics
subject: Screening
subject: Audit and standards
subject: Cancer
subject: Education and training
subject: Quality assurance

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Breast compression is necessary in mammography. It results in multiple benefits, including: More homogeneous thickness Less scatter Better tissue spreading Less dose Less image blurring However, a number of problems are related to breast...
On Structured Sparsity of Phonological Posteriors for Linguistic Parsing
Creators: name: Cernak, Milos
name: Asaei, Afsaneh
name: Bourlard, Hervé
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: The speech signal conveys information on different time scales from short time scale or segmental, associated to phonological and phonetic information to long time scale or supra segmental, associated to syllabic and prosodic information. Linguistic and neurocognitive studies recognize the phonological classes at segmental level as the essential and invariant representations used in speech temporal organization. In the context of speech processing, a deep neural network (DNN) is an effective computational method to infer the probability of individual phonological classes from a short segment of speech signal. A vector of all phonological class probabilities is referred to as phonological posterior. There are only very few classes comprising a short term speech signal; hence, the phonological posterior is a sparse vector. Although the phonological posteriors are estimated at segmental level, we claim that they convey supra-segmental information. Specifically, we demonstrate that phonological posteriors are indicative of syllabic and prosodic events. Building on findings from converging linguistic evidence on the gestural model of Articulatory Phonology as well as the neural basis of speech perception, we hypothesize that phonological posteriors convey properties of linguistic classes at multiple time scales, and this information is embedded in their support (index) of active coefficients. To verify this hypothesis, we obtain a binary representation of phonological posteriors at the segmental level which is referred to as first-order sparsity structure; the high-order structures are obtained by the concatenation of first-order binary vectors. It is then confirmed that the classification of supra-segmental linguistic events, the problem known as linguistic parsing, can be achieved with high accuracy using asimple binary pattern matching of first-order or high-order structures.
title: Beam quality optimisation for coronary angiography procedures in interventional paediatric cardiology: a phantom study
Creators: name: Pace, Eric
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Paediatric
subject: Cardiac
subject: Radioprotection / Radiation dose
subject: Fluoroscopy
subject: Catheter arteriography
subject: Catheter venography
subject: Angioplasty
subject: Balloon occlusion
subject: Contrast agent-intravenous
subject: Education and training
subject: Outcomes

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To observe actual clinical procedures currently used in the catheterisation laboratory and set up a simulated environment using a paediatric anthropomorphic phantom that reflects such procedures more faithfully than those in existing optimisation...
Medical Home for Children with Special Health Care Needs in North Carolina
Creators: name: Nageswaran, Savithri
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2004

description: Background: A medical home is a model of care defined by the American Academy ofPediatrics as medical care for children that is accessible, continuous, comprehensive, family-centered, coordinated and compassionate. North Carolina uses the medical home concept as a model for providing high quality care to children with special health care needs (CSHCN). However, information on characteristics ofCSHCN, predictors of having a medical home and the impact of having a medical home on outcomes ofCSHCN in North Carolina are not available. Methods: This study uses the data from the National Survey of Children with Special Health Care Needs conducted between 2000 and 2002. A random sample of parents or caregivers of CSHCN was surveyed in the United States. Information on health status ofCSHCN, health care experiences and insurance status was obtained. This study is limited to the data obtained from North Carolina. The characteristics of children with special health care needs are described. Bivariate analysis of socio-demographic factors with medical home and its 5 components (family-centered care, effective care coordination, personal doctor or nurse, usual source, referral problems) was carried out. Multivariate analysis was conducted to identif'y the predictors of having a medical home. The impact of having a medical home on the outcomes ofCSHCN and their families was assessed. Results: Fifty six percent ofCSHCN in North Carolina have a medical home. Race/ethnicity and severity of impairment ofCSHCN are independent predictors of having a medical home in this population. White CSHCN have 1. 7 times the odds of not having a medical home compared to non-White CSHCN and those with no limitation of activities due to their condition have 1.6 times the odds of having a medical home compared to those who have limitation of activities. Children who have a medical home are less likely to have unmet health services needs or to have delayed or foregone care, and respondents were more likely to report that the health services were easy to use and to be satisfied with the serv1ces. Conclusions: This study provides comprehensive information about CSHCN in North Carolina which can be used for needs assessment, and implementation and evaluation of programs for CSHCN in North Carolina. Disparities among CSHCN due to race/ethnicity and severity of their condition should be considered in organizing services for CSHCN in North Carolina. Future studies are needed to evaluate the 5 components of medical home and their impact on child health outcomes.
The universal expression for the amplitude square in quantum electrodynamics
Creators: name: Karplyuk, K. S.
name: Zhmudskyy, O. O.
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences
subject: 12.20-m

description: The universal expression for the amplitude square |u_f M u_i|^2 for any matrix of interaction M is derived. It has obvious covariant form. It allows the avoidance of calculation of products of the Dirac's matrices traces and allows easy calculation of cross-sections of any different processes with polarized and unpolarized particles.
description: 4 pages