cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Investigation on Active Axial Thrust Balancing for a Turbopump
Creators: name:  SEONG MIN JEON
Publisher: name: Proceedings of the Aerospace Europe Conference - EUCASS - CEAS - 2023
Year: 2023
Subjects: ROCKET ENGINE
TURBOPUMP
AXIAL THRUST
ACTIVE BALANCING

description: A 10 ton class closed cycle engine of staged combustion using liquid oxygen and kerosene is being developed as the upper stage engine of the next KSL V(Korea Space Launch Vehicle) following model to increase thrust and specific impulse. Since turbopurnp pressure in a staged combustion closed cycle engine is largely increased, an active thrust balancing system has to be needed to control the turbopump axial force. Two types of active thrust balancing systems with one axial control gap and two axial control gaps were investigated through pressure and leakage flow analysis to improve the axial thrust control capability.
AARP Survey of Small Business Owners in Texas, Wave 2
Creators: name: AARP
Publisher: name: Roper Center for Public Opinion Research
Year: 2024

description: Concern that employee(s) will not have enough money in retirement (1); currently saving for own retirement (1); offer employee retirement savings plan (11); concerns about operating/managing an employee retirement savings plan (3); main reason for offering employee retirement savings plan (1); concerns about non-savers being reliant on public assistance (1); support establishment of a state-private partnership in retirement savings program (5).
title: Neuroendocrine tumours of the gastro-entero-pancreatic system
Creators: name: Salvador, Joao Carlos
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Cancer
subject: Diagnostic procedure
subject: MR
subject: CT
subject: Oncology
subject: Abdomen

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: - Review the spectrum of appearances of the gastro-entero-pancreatic neuroendocrine tumours. - Review the WHO 2010 classification system for gastro-entero-pancreatic neuroendocrine tumours. - Understand the clinical, pathological and laboratorial...
Vibration test of upper stage engine for KSLV-II
Creators: name:  JINHYUK KIM
name:   JONG YOUN PARK
name:   SOON-YOUNG PARK
name:   INDEUK KANG
name:   IKSUNG CHOI
Publisher: name: Proceedings of the Aerospace Europe Conference - EUCASS - CEAS - 2023
Year: 2023
Subjects: VIBRATION TEST
UPPER STAGE ENGINE
LIQUID ROCKET ENGINE
KSLV-II
FREQUENCY RESPONSE FUNCTION

description: An upper stage engine is mounted on a launch vehicle and is exposed to severe dynamic loads during flight. The dynamic loads are generated by the combustion of the first stage engines until the upper stage separation. Therefore, it is crucial to ensure the structural integrity of the upper stage engine against these dynamic loads prior to the actual flight test. In this regard, the vibration test is one of the important tasks in the upper stage engine development process and its qualification test. This paper presents the overall process of the vibration test conducted on the upper stage engine for KSL V-II.
Theoretical corrections and world data for the superallowed ft values in the beta decays of 42Ti, 46Cr, 50Fe and 54Ni
Creators: name: Towner, I. S.
name: Hardy, J. C.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Prompted by recent measurements, we have surveyed world data and calculated radiative and isospin-symmetry breaking corrections for the superallowed 0+ -to- 0+ Fermi transitions from 42Ti, 46Cr, 50Fe and 54Ni. This increases the number of such transition with a complete set of calculated corrections from 20 to 23. The results are compared with their equivalents for the mirror superallowed transitions from 42Sc, 46V, 50Mn and 54Co. The predicted ft-value asymmetries of these mirror pairs are sensitive to the correction terms and provide motivation for improving measurement precision so as to be able to test the corrections. To aid in that endeavor, we present a parameterization for calculating the f values for the new transitions to plus/minus 0.01%.
description: 10 pages
title: Dynamic contrast-enhanced MRI parameters correlate with angiopoietin-1/angiopoietin-2 ratio and high-risk features in patients with multiple myeloma
Creators: name: Koutoulidis, Vassilis
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Haematologic
subject: Oncology
subject: MR-Diffusion/Perfusion
subject: MR
subject: Diagnostic procedure
subject: Contrast agent-intravenous
subject: Haematologic diseases

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) studies the kinetics of the distribution of paramagnetic contrast in the microvessels and in the interstitial space of the imaged tissue. It has been previously reported that DCE-MRI...
Separating the Mouth from the Body: A Growing Concern for Overall Health
Creators: name: Goodman, Lori A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2005

description: Over the past few decades we have seen an improvement in the oral health of Americans. Advances in technology and science have provided a greater understanding of the etiologic factors involved in dental disease and the preventive measures necessary and available to improve oral health. In spite of the improvements in dentistry, there continues to be a disproportionately low utilization of dental services ~- for poor children and children of some ethnic/racial communities. There is a strong correlation between dental insurance and utilization. Children from families without dental insurance are 3 times more likelyto have dental needs than children with insurance. Among low-income children, almost 50% of tooth decay remains untreated with devastating effects. Oral diseases are progressive and cumulative and become more complex over time. Because dental disease starts early in life and has health consequences across our life span, prevention needs to start early as well. Integrating primary care medicine and dentistry would increase opportunities to improving access to dental care for underserved children.
title: The value of FDG-PET/CT for the diagnosis of Rheumatoid arthritis on patients with malignancies
Creators: name: Suga, Tsuyoshi
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Inflammation
subject: Screening
subject: PET-CT
subject: Nuclear medicine
subject: Musculoskeletal joint

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The usefulness of positron emission tomography (PET) using fluorine-18-labeled fluorodeoxyglucose (FDG) (FDG-PET) has been well established for various types of cancer. It has been also reported that FDG-PET could detect the active lesions of...
Chern--Simons--Yang--Mills system in presence of Gribov horizon with fundamental Higgs matter
Creators: name: Gomez, Arturo J.
name: Gonzalez, Sebastian
name: Sorella, Silvio P.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work we study the behaviour of Yang--Mills--Chern--Simons theory coupled to a Higgs field in the fundamental representation by taking into account the effects of the presence of the Gribov horizon. By analyzing the infrared structure of the gauge field propagator, both confined and de-confined regions can be detected. The confined region corresponds to the appearance of complex poles in the propagators, while the de-confined one to the presence of real poles. One can move from one region to another by changing the parameters of the theory.
description: 10 pages, 2 figures
Counting the Massive Vacua of N=1* Super Yang-Mills Theory
Creators: name: Bourget, Antoine
name: Troost, Jan
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the number of massive vacua of N=4 supersymmetric Yang-Mills theory mass-deformed to preserve N=1 supersymmetry, for any gauge group G. We use semi-classical techniques and efficiently reproduce the known counting for A,B and C-type gauge groups, present the generating function for both O(2n) and SO(2n), and compute the supersymmetric index for gauge groups of exceptional type. A crucial role is played by the classification of nilpotent orbits, as well as global properties of their centralizers. We give illustrative examples of new features of our analysis for the D-type algebras.
description: 21 pages, 4 figures
Determining the Minimal Clinically Important Difference of the UNC Dry Eye Management Scale
Creators: name: Hwang, Christopher
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: BACKGROUND: Dry eye disease (DED) is a common, chronic ocular surface disease affecting millions of Americans; it can severely diminish quality of life (QOL). Many patient-reported outcomes (PRO) questionnaires have been developed to assess DED, but few have established a minimal clinically important difference (MCID) in accordance with FDA guidelines. OBJECTIVE: To establish an initial estimation of the MCID of the UNC Dry Eye Management Scale (DEMS) and assess patient perceptions of symptom change versus score change. METHODS: I recruited 33 patients who had a prior DEMS score from a UNC ophthalmology cornea clinic in Chapel Hill, NC for study in the months of May and June 2014. I compared patients' change in the DEMS scores from the most recent prior visit to patient-reported assessments of change in symptoms at the time of this study. Using anchor-based methods to determine an MCID, I obtained linear regression coefficients from the comparison to be my estimation of the MCID. I also recorded clinical assessments of the patients' disease severity, and I administered another questionnaire to assess patient perceptions of score change as it relates to symptom change. RESULTS: All 33 patients in this first attempt to establish MCID were included in analysis (33.3% male, 67.7% female, mean age 60.5 years). Anchors were correlated with DEMS score changes. The MCID ranged from ½ point using linear regression analysis to 1 point using descriptive statistics. Patients felt that a change of approximately 2 points was needed to represent an improvement/worsening of symptoms. The UNC DEMS had modest correlations with clinical tests. CONCLUSIONS: The UNC DEMS is a valid, responsive PRO instrument that can be used easily in the clinic to aid in the management of dry eye disease over time.
Theory of antiferroelectric phase transitions
Creators: name: Tolédano, Pierre
name: Guennou, Mael
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: At variance with structural ferroic phase transitions which give rise to macroscopic tensors coupled to macroscopic fields, criteria defining antiferroelectric (AFE) phase transitions are still under discussion due to the absence of specific symmetry properties characterizing their existence. They are recognized by the proximity of a ferroelectric (FE) phase induced under applied electric field, with a double hysteresis loop relating the induced polarization to the electric field and a typical anomaly of the dielectric permittivity. Here, we show that there exist indeed symmetry criteria defining AFE transitions. They relate the local symmetry of the polar crystallographic sites emerging at an AFE phase transition with the macroscopic symmetry of the AFE phase. The dielectric properties of AFE transitions are deduced from a Landau theoretical model in which ferroelectric and ferrielectric phases are shown to stabilize as the result of specific symmetry-allowed couplings of the AFE order- parameter with the field-induced polarization.
description: 7 pages, 5 figures, 1 table
title: Educational computed tomography image quality web application
Creators: name: Mäkelä, Teemu
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Education and training
subject: Education
subject: CT
subject: Computer applications

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Our goal was to create an easy-to-use educational tool forcomputed tomography (CT) image quality demonstrations. The application couldbe employedduring presentations or in self-learning to demonstrate how various scanning and...
Influence of tetragonal platelets on the dielectric permittivity of 0.964Na$_{1/2}$Bi$_{1/2}$TiO$_3$-0.036BaTiO$_3$
Creators: name: Pforr, Florian
name: Major, Márton
name: Donner, Wolfgang
name: Stuhr, Uwe
name: Roessli, Bertrand
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the temperature-dependent evolution of the octahedral tilt order in a lead-free relaxor ferroelectric and its impact on the ferroelectric properties. Using diffuse neutron scattering on a 0.964Na$_{1/2}$Bi$_{1/2}$TiO$_3$-0.036BaTiO$_3$ single crystal, we suggest a model for the temperature-dependent nanostructure of this perovskite that features chemically pinned tetragonal platelets embedded in the rhombohedral matrix, often separated by a cubic intermediate phase. Our results show a clear correlation between the squared thickness of the tetragonal platelets and the dielectric permittivity. This is interpreted as a sign for increased polarizability of the strained and distorted lattice at the center of the tetragonal platelets.
description: 25 pages, 12 figures
Functionally Graded Materials designed for thrusters : resistance in combustion environment and under laser thermal flux
Creators: name:  LISA AUDOUARD
name:   AURELIE JULIAN-JANKOWIAK
name:   JEAN-FRANCOIS JUSTIN
name:   PIERRE BERTRAND
name:   CECILE LANGLADE
name:   MATTHIEU GARCIA
name:   LUCIEN VINGERT
name:   THIBAUT ARCHER
Publisher: name: Proceedings of the Aerospace Europe Conference - EUCASS - CEAS - 2023
Year: 2023
Subjects: FUNCTIONALLY GRADED MATERIALS
SATELLITES
ULTRA-REFRACTORIES

description: Functionally Graded Materials (FGM) are developed by ONERA, CNES and ICB to withstand harsh thermal and environmental conditions induced by new green propellants in satellite thrusters. In this study, different types ofFGM are elaborated through Atmospheric Plasma Spraying (APS) and tested in representative environments to assess the influence of the FGM composition profile. In particular, the resistance of FGM facing thermal shock tests is evaluated with a laser test bench, and its resistance in oxidative flow in a combustion chamber with a Hz/O2 flame. FGM with thin ceramic layer exhibit very good behavior under these conditions.
Comparison of Patient versus Physician Reporting of Comorbidities, Results from a Population-Based Cohort of Prostate Cancer Patients
Creators: name: Ye, Fan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Prostate cancer is the most common malignancy and the second leading cause of cancer mortality in men in the United States, with 240,000 cases diagnosed and 30,000 deaths annually. It is a significant burden for the United States population and health care system due to the disease prevalence, mortality, effects on health related quality of life, as well as cost of treatment. Many different treatment options are available for localized, non-metastatic prostate cancer, such as active surveillance, radical prostatectomy, and radiation therapy, with newer and costlier treatment options being developed. Comparative effectiveness research between these forms of treatment is imperative to determine differences in survival outcomes, health related quality of life, and costs. Here, we reviewed the literature for the frequency of repeat biopsy in prostate cancer patients receiving active surveillance and effects on rate of disease progression, and found insufficient evidence regarding this. Additionally, due to the importance of baseline comorbid conditions in men with prostate cancer in terms of treatment decision making, health related quality of life, and survival outcomes, we conducted a prospective study of 881 men in North Carolina with localized prostate cancer to compare patient versus physician reporting of comorbidities. We calculated percent agreement and its kappa statistic between patient and physician-report for 20 commonly used comorbidities in cancer research. We found that overall, agreement between patient and physician reporting of common comorbidities in newly-diagnosed prostate cancer patients is moderate. In research studies, whether physician reporting, patient reporting, or both should be used to inform treatment decision making and predict survival outcomes is unclear.
Licuala caespitosa Henderson & Nguyen Quoc Dung 2017, sp. nov.
Creators: name: Henderson, Andrew
name: Dung, Nguyen Quoc
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Arecales
Arecaceae
Licuala
Licuala caespitosa

description: Licuala caespitosa Henderson & Nguyen Quoc Dung sp. nov. (Fig. 5)
 Type:— VIETNAM. Da Nang City, Hoa Vang District, Ba Na-Nui Chua Nature Reserve, road to summit, 16°00’N, 108°02’E, ca. 350 m elevation, 20th April 2017, A. Henderson & Nguyen Quoc Dung 4211 (holotype VFM!, isotype NY!).
 It differs from the similar Licuala glaberrima in its clustered (versus solitary) stems, solitary or paired flowers (versus solitary), and tubular calyces (versus calyces with pedicellate base).
Stems clustered, to 3.0 m tall, 5.0 cm diameter. Leaf number not recorded; sheaths not recorded; ligules prominent, to 55.0 cm long; petioles to 165.0 cm long, thorny for only about 30.0 cm proximally with short thorns to 0.5 cm long; blades to 95.0 cm across, split into 28-32 segments, these with straight sides; costa continuous into central segment, forming a petiolulate base to segment; middle segment 52.0 cm long, 4.5 cm wide at apex; lateral segment 35.0 cm long, 0.5 cm wide at apex; segments briefly indented at the apex, and with minute, brown scales abaxially. Inflorescences erect amongst the leaves, to 120.0 cm long, branched to 2 orders; prophylls not recorded; rachis bracts elongate, tubular, ca. 20.0 cm long; partial inflorescences 3; rachillae glabrous, to 19.0 cm long; flowers 3.0 mm long, mostly solitary, a few paired on proximal parts of rachillae, distantly and spirally arranged, yellow at anthesis; calyx 2.0 mm long, glabrous, tubular, scarcely lobed at the apex; corolla 3.0 mm long, glabrous, split for ca. two thirds its length into 3, valvate petals; stamens 6; staminal ring 0.5 mm high; filaments free for 0.7 mm; anthers rounded, 0.5 mm long; pistil 1.5 mm long including a 0.7 mm long style, glabrous; fruits not recorded.
 Distribution and habitat:—Central Vietnam in Ba Na-Nui Chua Nature Reserve in lowland rainforest on steep slopes at 350 m elevation.
 Taxonomic notes:— Licuala caespitosa is known from only a single specimen from Ba Na-Nui Chua Nature Reserve. It is similar to L. glaberrima, differing in its larger size, clustered stems, solitary or paired flowers, and tubular calyces. Licuala glaberrima occurs over 400 km further to the south in Khanh Hoa province.
description: Published as part of Henderson, Andrew & Dung, Nguyen Quoc, 2017, New species of Lanonia, Licuala, and Pinanga (Arecaceae) from Vietnam, pp. 159-172 in Phytotaxa 323 (2) on page 164, DOI: 10.11646/phytotaxa.323.2.4, http://zenodo.org/record/13696684
title: Low dose chest CT correlates well with physiologic measures of interstitial lung disease
Creators: name: Teh, Joelin
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Quality assurance
subject: Occupational / Environmental hazards
subject: Observer performance
subject: Efficacy studies
subject: CT
subject: Thorax

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Inhalation of asbestos fibers has numerous benign and malignant pathologic consequences, including interstitial lung disease (ILD) [1]. The latent nature of the pathophysiological response of the body to inhaled asbestos fibers necessitates ongoing...
Experimental analysis of the flow field over an aeroelastic wind tunnel model for tail buffeting analysis
Creators: name:  JULIUS STEGMULLER
name:   ANDREAS MOLZ
name:   CHRISTIAN BREITSAMTER
Publisher: name: Proceedings of the Aerospace Europe Conference - EUCASS - CEAS - 2023
Year: 2023
Subjects: FLEXIBLE WIND TUNNEL MODEL
AEROELASTICITY
TAIL BUFFETING

description: Modem high-agility aircraft are often affected by the consequences of tail buffeting effects at medium to high angles of attack. High pressure fluctuations with distinct frequency contents characterize the flow field downstream of the vortex breakdown and are responsible for the dynamic structural response. For analyzing the flow field and the frequency content of the pressure fluctuations over a modular full-span wind tunnel model with either rigid or flexible double-delta wings and horizontal and vertical tailplanes, stereoscopic particle image velocimetry measurements and measurements with a fast-response aerodynamic pressure probe are performed. When comparing the rigid and flexible configurations, significant differences in the axial vortex core velocities in some measurement planes can be detected, while the power spectral densities of the pressure fluctuations show similar characteristics with slight differences in the amplitudes.
Direct and quasi-direct band gap silicon allotropes with remarkable stability
Creators: name: He, Chaoyu
name: Li, Jin
name: Peng, xiangyang
name: Meng, Lijun
name: Tang, Chao
name: Zhong, Jianxin
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In our present work, five previously proposed sp$^3$ carbon crystals were suggested as silicon allotropes and their stabilities, electronic and optical properties were investigated by first-principles method. We find that these allotropes with direct or quasi-direct band gaps in range of 1.2-1.6 eV are very suitable for applications in thin-film solar cells. They display strong adsorption coefficients in the visible range of the sunlight in comparison with diamond silicon. These five silicon allotropes are confirmed possessing positive dynamical stability and remarkable themodynamical stability close to that of diamond silicon. Especially, the direct band gap M585-silicon possessing energy higher than diamond silicon only 25 meV per atom is expected to be experimentally produced for thin-film solar cells.
description: 5 pages, 5 figures and 1 table
North Carolina First Step Program: Improving Provider Assessment of Childhood Obesity
Creators: name: Peaker, Brandy L., M.D.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: The United States' worsening prevalence of childhood overweight/obesity has stimulated substantial attention from the medical community. Several medical organizations have acknowledged that one of the most important steps in addressing the problem is early detection. Yearly overweight/obesity screening with Body Mass Index (BMI) for all children is standard of care, however, many practitioners are non-compliant with these guidelines. As a result, overweight/obese children are being underdiagnosed, causing missed opportunities for secondary prevention and early treatment. The North Carolina (N.C.) First Step Program is an intervention aimed at helping providers assess pediatric weight status more accurately and consistently. The program incorporates changes in multiple levels of the patient encounter and is designed to be both cost-effective and time-efficient. This Master's paper describes the planning and evaluation of the N.C. First Step Program.
One health framework landscape analysis
Creators: name: Kavya Niranjan
name: Asa, Nicole
name: Krause, Ana
name: Guthrie, Brandon
name: START Center
Publisher: name: Gates Open Research
Year: 2023

description: The START team conducted a landscape analysis on current information and literature on the One Health framework, in preparation for a plenary speech to be delivered by a senior BMGF leader.
STRATEGI PENGELOLAAN JURNAL TERAKREDITASI
Creators: name: Suwanto, Insan
Publisher: name: Zenodo
Year: 2023
Subjects: strategi
tata kelola jurnal
istilah jurnal ilmiah
Akreditasi jurnal ilmiah
pengajuan ARJUNA

description: Pengelolaan/tata kelola jurnal ilmiah memang tidak mudah. Banyak tantangan dan hambatan yang ditemukan, seperti kebijakan pimpinan, fasilitas, sumber daya manusia, pengetahuan dan wawasan terkait pengelolaan jurnal hingga masalah keuangan. Strategi sukses pengelolaan jurnal adalah sinergitas antara setiap unsur tata kelola jurnal. Bagi pengelola jurnal sendiri, yang perlu ditingkatkan adalah pengetahuan akan paradigma tata kelola jurnal dan keterampilan pengelolaan jurnal digital terstandar nasional (ARJUNA). Maka, diharapkan melalui materi sederhana ini setiap pengelola jurnal dimana pun berada dapat memahami persyaratan, ketentuan dan mekanisme tata kelola jurnal yang baik sesuai dengan ARJUNA.
title: Audit of computed tomography image quality for patients referred for transcatheter aortic valve implantation
Creators: name: Gibbs, Victoria
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Quality assurance
subject: Audit and standards
subject: CT-Angiography
subject: CT
subject: Cardiac

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Without treatment, severe aortic stenosis has an extremely poor prognosis [1] . Patients who are too unwell to undergo conventional aortic valve replacement (AVR) may be considered for transcatheter aortic valve implantation (TAVI), which is a less...
Direct Measurement of Exciton Valley Coherence in Monolayer WSe$_2$
Creators: name: Hao, Kai
name: Moody, Galan
name: Wu, Fengcheng
name: Dass, Chandriker Kavir
name: Xu, Lixiang
name: Chen, Chang-Hsaio
name: Li, Ming-Yang
name: Li, Lain-Jong
name: MacDonald, Allan H.
name: Li, Xiaoqin
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In crystals, energy band extrema in momentum space can be identified by their valley index. The internal quantum degree of freedom associated with valley pseudospin indices can act as a useful information carrier analogous to electronic charge or spin. Interest in valleytronics has been revived in recent years following the discovery of atomically thin materials such as graphene and transition metal dichalcogenides. However, the valley coherence time, a key quantity for manipulating the valley pseudospin, has never been measured in any material. In this work, we use a sequence of laser pulses to resonantly generate a coherent superposition of excitons (Coulomb-bound electron-hole pairs) in opposite valleys of monolayer WSe$_2$. The imposed valley coherence persists for approximately one hundred femtoseconds. We propose that the electron-hole exchange interaction provides an important decoherence mechanism in addition to exciton population decay. Our work provides critical insight into the requirements and strategies for optical manipulation of the valley pseudospin for future valleytronics applications.
description: 23 pages, 6 figures
Asthma Disparities in Low Socioeconomic Status Urban Latino Children in the United States
Creators: name: Russell, Karen
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: This paper examines health disparities among low income urban Latino children with asthma in the United States and evaluates the role of community asthma management programs in decreasing those disparities. Potential barriers to effective public health policy changes in reducing asthma morbidity and mortality among Latino children in urban environments are also considered. Specific recommendations are made to address these issues. These recommendations span short term specific solutions directed at reducing asthma and longer term recommendations that include addressing educational needs and the development of health policy. It is shown that a multi-factorial approach is needed to address the complex chronic condition of asthma in this population. At the community level, programs involving key stakeholders will be most likely to succeed. The disparity in asthma treatment and outcomes in Hispanic children compared with non-Hispanic children is not only an ethical problem, but also an economic and societal problem. Latinos have now become the largest ethnic minority group in America, surpassing African-Americans, according to the United States Census Bureau. Asthma is the most common chronic childhood disease in the United States and continues to disproportionately affect minority and low-income groups. Latino children living in low socioeconomic status urban environments experience higher asthma prevalence, morbidity and mortality than non-Hispanic Caucasian children (Bryant-Stephens, 2009). Accurate research data on the health status of the diverse Latino population is lacking in comparison to data on non-Hispanic Caucasian children with asthma. Many factors, including health care inequities, environmental issues and social issues, converge to make asthma worse for underrepresented racial and ethnic minority children. Inadequate health care access and poor quality of available health care are factors to be addressed at the national, state, community and neighborhood levels. Exposure to indoor and outdoor pollutants and allergens affect asthma morbidity. Social stressors including discrimination, living in disadvantaged neighborhoods, and exposure to violence contribute to poor outcomes among urban Latino children with asthma.
A MBSE-based framework for aircraft systems design and evaluation
Creators: name:  HAJER SAADA
name:   ANA GARCIA GARRIGA
Publisher: name: Proceedings of the Aerospace Europe Conference - EUCASS - CEAS - 2023
Year: 2023
Subjects: AIRCRAFT SYSTEMS
SYSTEMS DESIGN
MBSE
SYSTEMS EVALUATION
SYSTEMS INTEGRATION
HYBRID ELECTRIC PLATFORM

description: A raising number of flights has increased the impact of aviation on the environment. To mitigate these impacts, the Clean Sky 2 initiative has set goals for the aviation industry to reduce fuel consumption, CO2 emissions and perceived noise for the next generation of commercial aircraft. In addition, Clean Sky 2 aims to be a key contributor to accelerate the progress toward the Flightpath 2050 goals set by the Advisory Council for Aeronautics Research for net-zero emissions. As a consequence, there is a huge effort on the development of new greener technologies for aircraft systems. The overall design and integration of an aerospace system today encompasses a varying range of engineering disciplines and models at different levels of abstraction and complexity. The collaborative project Modelling and Simulation tools for Systems Integration on Aircraft (MISSION), developed under the European Union Clean Sky 2 Program, aims to develop and demonstrate an integrated modelling, simulation, design and optimization framework for aircraft systems and subsystems leveraging Model Based System Engineering principles to the aerospace industry. This paper proposes a Model Based System Engineering-based modelling framework supporting the whole aerospace product design workflow from requirements definition to system certification. Several advanced analyses were developed within this framework and can be applied at any stage of the design workflow. This framework enables an optimized aircraft systems design quantified against aircraft key performance indicators. As a case study, we demonstrate the capabilities of the proposed framework to support the design of a modular hybrid electric platform and evaluate its impact at aircraft level.
Causes of Death in North Carolina Tuberculosis Patients, 1993-2004
Creators: name: Boas, Zachary
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: Setting: A cohort of 5,311 patients reported to the North Carolina Tuberculosis Control program from 1993-2003. Objective: To examine the leading causes of death in North Carolina tuberculosis patients and to determine risk factors for death, in particular deaths due to tuberculosis, in this population. Design: This is a retrospective cohort study using data extracted from the North Carolina Tuberculosis Control Program from 1993-2003 linked to data about time and causes of death as recorded on death certificates through the United States National Death Index. Results: A total of 1,616 patients died over the study period, representing 30.1% of our cohort, with 540 (10.5%) of these deaths occurring during tuberculosis treatment. Risk factors for death were increasing age, male sex (OR 1.14 95% CI 1.02-.139), US citizenship (OR 4.7 95% CI 2.6-8.5), known HN seropositivity (7.3 95% CI 5.8-9.4) or unknown HN status (1.53 95% CI 1.30-1.81) and unknown alcohol status (OR 1.84 95% CI 1.52-2.24). Ten percent of deaths in our cohort were due directly to tuberculosis, another 13% were due to HN and 22% were due to other pulmonary diseases. Excessive alcohol use was associated with an increased risk of death by TB (OR 1. 70, 95% CI 1.01-2.85) while male sex had a protective effect (OR 0.69 95% CI 0.49-0.98). Conclusion: The case-fatality rate in this cohort of North Carolina TB patients remains high, with many of these deaths being due either directly to tuberculosis or related diseases such as HN or pulmonary disease.
Understanding perceptions of women who engage in sex and non-sex work: Study 1
Creators: name: Kellie, Dax
name: Blake, Khandis
name: Brooks, Robert
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: Women are typically judged more harshly than men for appearing sexy or behaving suggestively (known as the sexual double standard). One group that receives a lot of negative stigma associated with this double standard is female sex workers. However, there is little understanding of what makes the negativity towards female sex workers so strong. Is it their sexual activity, the voluntary choice by some to commit to a line of work involving sex or nudity, their ability to earn income from work involving sex or nudity, or some combination? We plan to ask people to make judgements of fictional women who perform a wide variety of jobs and hobbies associated with sex and intimacy in order to understand more broadly what drives the strongest negative attitudes towards women who perform sex work or behave sexually.
A Transmission-Filter Coronagraph: Design and Test
Creators: name: Ren, Deqing
name: Dou, Jiangpei
name: Zhu, Yongtian
Publisher: name: arXiv
Year: 2015
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We propose a transmission-filter coronagraph for direct imaging of Jupiter-like exoplanets with ground-based telescopes. The coronagraph is based on a transmission filter that consists of finite number of transmission steps. A discrete optimization algorithm is proposed for the design of the transmission filter that is optimized for ground-based telescopes with central obstructions and spider structures.We discussed the algorithm that is applied for our coronagraph design. To demonstrate the performance of the coronagraph, a filter was manufactured and laboratory tests were conducted. The test results show that the coronagraph can achieve a high contrast of 10 to -6.5 at an inner working angle of 5λ/D, which indicates that our coronagraph can be immediately used for the direct imaging of Jupiter-like exoplanets with ground-based telescopes.
description: 6 pages, 6 figures
Convergence of Machine Learning and Finite Element methods, the smart superelements
Creators: name:  JEAN-DANIEL LECUYER
name:   VICKY TSIANIKA
name:   TONY FAVALORO
name:   BRUCE DE WITT
Publisher: name: Proceedings of the Aerospace Europe Conference - EUCASS - CEAS - 2023
Year: 2023
Subjects: CONVERGENCE
MACHINE
LEARNING
FINITE
ELEMENTS
SUPERELEMENTS

description: In finite element analysis for structural simulation, demand for computer resources has always exceeded existing capabilities. Once engineers discovered this method, the size of engineering problems quickly grew to exceed the capacity of the existing systems. This process has repeated itself time and time again. A solution to this problem can be achieved, for many years, by using the long-time known superelements [I]. The principle used here is that the model is divided into a series of components, each of which is processed independently resulting in a set of matrices that are reduced to a boundary and describe the behavior of the component as seen by the rest of the structure. This Reduced Order Modeling approach, with a fully description by a set of stiffness, damping, mass, loads matrices, has proven for a long time to be efficient and robust [2]. Reduced simulation models decrease the computational complexity of high-fidelity engineering models, allowing for data compression and encapsulation of large discretized partial differential equation (PDE) models. In the other hand, those last years, all the Artificial Intelligence and Machine Learning technologies and capabilities have shown dramatic growing interest and great improvements to become mature [3]. The field of computational mechanics is undergoing massive transformation due to the arrival of those various breakthrough Machine Leaming (ML) and Reduced Order Modeling (ROM) technologies [4]. With the new Smart Superelement technology (SSE), MSC Nastran extends the aforementioned superelement methodology by combining it with Machine Leaming to provide parameterized superelements for linear static, linear dynamic, and nonlinear analyses. The parametrized approach enables the analyst to efficiently conduct what-if studies by capturing modeling variations (i.e., material parameters, geometrical parameters, etc.) even during the initial design stages when requirements or material availability may not be finalized. Smart Superelements can be used in assembly structural models with parameters available for optimization and robustness analysis. In this paper, we shall explore the aforementioned new SSE concept after some introductions on the superelements and the machine learning technologies. We will then expose a case study in the aerospace industry using a realistic industrial aircraft finite element model. These new techniques combined with the unprecedented availability of computing resources ( e.g., cloud), provide a unique structural simulation solution, to tackle previously unattainable engineering problems. Copyright 2023 by First Author. Posted online by the EUCASS association with permission.
Embedded Energy State in an Open Semiconductor Heterostructure
Creators: name: Hrebikova, Ivana
name: Jelinek, Lukas
name: Silveirinha, Mário G.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this paper, we show that HgCdTe heterostructures may support bound electronic states embedded in the continuum, such that the discrete energy spectrum overlaps the continuous spectrum. Although the proposed heterostructures are generally penetrable by an incoming electron wave, it is shown that they may support spatially localized trapped stationary states with an infinite lifetime. We discuss the possibility of a free electron being captured by the proposed open resonator, and present a detailed study of the trapping lifetime in the case of a detuned resonator.
Multimodal Pain Protocol After Head and Neck Surgery in the Context of the Current Opioid Crisis
Creators: name: Du, Eugenie
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: Background: The United States is in the midst of a public health crisis of prescription opioid addiction, abuse and overdose. Use of narcotic medication in the post-surgical setting may contribute to the problem. Multimodal analgesic plans have the potential to decrease narcotic requirements in patients after surgery; however, there is little prospective data to show efficacy in Head and Neck (H&N) surgery patients. Methods: An IRB approved, quality improvement initiative was undertaken to implement a multimodal analgesic protocol for all H&N surgery patients at a tertiary referral center. The protocol was implemented November 2017 and post-protocol data from January 2018 to May 2018 were compared to pre-protocol data from May 2017 to October 2017. Data were abstracted from the electronic health records as well as through pre-operative and post-operative surveys. Average pain scores and opioid use in Morphine Milligram Equivalents (MME) before and after protocol implementation were compared.  Results: One-hundred-and-five post-protocol patients were compared to 167 pre-protocol patients. The adjusted median MME in the first 24 hours after surgery decreased significantly from 93.7mg to 58.6mg (p=0.026) with protocol implementation. When averaged over the length of stay (MME/HD), there was no significant change between the pre and post protocol cohort (57.9mg vs 46.8mg, p=0.211) The average pain score immediately after surgery was 3.6 and on the day of discharge was 2.7; neither measure changed with protocol implementation. Conclusion: Our multimodal analgesia plan reduced narcotic use immediately after surgery but not over the course of hospitalization. There was no difference in average reported pain scores. This study shows that implementation of a multimodal narcotic-sparing analgesia plan after H&N surgery is feasible. Future studies will need to further refine the optimal analgesia plan, optimize pain regimens for various patient characteristics and assess the long-term efficacy, safety and cost of such regimens.
Licuala honheoensis Henderson & Nguyen Quoc Dung 2017, sp. nov.
Creators: name: Henderson, Andrew
name: Dung, Nguyen Quoc
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Arecales
Arecaceae
Licuala
Licuala honheoensis

description: Licuala honheoensis Henderson & Nguyen Quoc Dung sp. nov. (Fig. 7)
 Type:— VIETNAM. Khanh Hoa Province: Ninh Hoa District, Tien Du commune, Hon Heo mountain, 12.450N, 109.233E, 334 m, 6 July 2010, A. Henderson & Bui Van Thanh 3666 (holotype HN!, isotype NY!).
 It differs from similar species (Licuala parvula, L. robinsoniana) with tubular, slightly swollen rachis bracts, flower clusters borne on short pedicels, densely hairy calyces and corollas, and globose fruits in its solitary stems and longer rachillae.
Stems solitary, to 2 m tall, 4 cm diameter. Leaf number not recorded; sheaths length not recorded, becoming fibrous; ligules fibrous, to 14.0 cm long; petioles 120.0–250.0 cm long, with short thorns to 0.5 cm long; blades split into 20–22 segments, these with straight sides; costa continuous into central segment, forming a brief, petiolulate base to segment; middle segment 39.5–64.0 cm long, 3.2–3.6 cm wide at apex; lateral segment 26.0– 39.5 cm long, 1.0– 1.5 cm wide at apex; segments briefly indented at the apex, and with minute, brown scales abaxially. Inflorescences erect amongst the leaves, to 80.0 cm long, branched to 2 orders; prophylls not recorded; rachis bracts tubular, slightly swollen, 7.5–12.0 cm long, fraying at the apices; partial inflorescences to 6; rachillae to 13.0 cm long, densely covered with short, stiff, golden brown hairs; flowers 4.0 mm long, 3–4 borne on a short pedicel, these closely and irregularly arranged, not seen at anthesis; calyx 3.0 mm long, densely hairy as the rachillae, remaining tubular at base, deeply lobed above; corolla 3.5 mm long, densely hairy as the rachillae, split into 3, valvate petals; fruits globose, with reticulate, prominent fibers on surface, 1.1 cm long, 0.7 cm diameter; seed covered by a locular epidermis; endosperm homogeneous.
 Distribution and habitat:—South Vietnam in Khanh Hoa province, known only from Hon Heo mountain in low, dry forest at 334–500 m elevation.
 Taxonomic notes:— Licuala honheoensis is similar to both L. parvula and L. robinsoniana, differing from these in its solitary stems and longer rachillae.
 Additional specimens examined. VIETNAM. Khanh Hoa: Ninh Hoa District, Tien Du commune, Hon Heo mountain, 12.450N, 109.233E, 334 m, 6 July 2010, Henderson & Bui Van Thanh 3668 (HN, NY); Hon Heo, new road to dam, 12.454N, 109.218E, ca. 500 m, 8 July 2014, Henderson & Nguyen Quoc Dung 3926 (VFM, NY); same locality and date, Henderson & Nguyen Quoc Dung 3933 (VFM, NY). Annam, presque’il de Nui Hon heo, 3 May 1923, Poilane 6182 (P).
description: Published as part of Henderson, Andrew & Dung, Nguyen Quoc, 2017, New species of Lanonia, Licuala, and Pinanga (Arecaceae) from Vietnam, pp. 159-172 in Phytotaxa 323 (2) on page 166, DOI: 10.11646/phytotaxa.323.2.4, http://zenodo.org/record/13696684
Wigner distributions and orbital angular momentum of a proton
Creators: name: Chakrabarti, D.
name: Maji, T.
name: Mondal, C.
name: Mukherjee, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The Wigner distributions for u and d quarks in a proton are calculated using the light front wave functions (LFWFs) of the scalar quark-diquark model for nucleon constructed from the soft-wall AdS/QCD correspondence. We present a detail study of the quark orbital angular momentum(OAM) and its correlation with quark spin and proton spin. The quark density distributions, considering the different polarizations of quarks and proton, in transverse momentum plane as well as in transverse impact parameter plane are presented for both u and d quarks.
description: 25 pages, 12 figures, minor changes, version to appear in EPJ C
Vacuum Persistence in Fierz-Pauli Theory on a Curved Background
Creators: name: Hwang, Sungmin
name: Schimmel, Dennis
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: By explicitly constructing the Hilbert space, Higuchi showed that there is a lower bound on the mass of a minimally-coupled free spin-2 field on a curved background \cite{HiguchiBound}. Using the vacuum persistence amplitude, we show that this bound is modified by taking into account additional terms not prohibited by symmetry in the case of a maximally symmetric spacetime. This result can further be generalized to the maximally symmetric space case, such as the FRW universe, and its corresponding bound of the deformation parameter is discussed.
description: 12 pages, 4 figures