cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Globular Cluster Population of NGC 1052-DF2: Evidence for Rotation
Creators: name: Lewis, Geraint F.
name: Brewer, Brendon J.
name: Wan, Zhen
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Based upon the kinematics of ten globular clusters, it has recently been claimed that the ultra-diffuse galaxy, NCD 1052-DF2, lacks a significant quantity of dark matter. Dynamical analyses have generally assumed that this galaxy is pressure supported, with the relatively small velocity dispersion of the globular cluster population indicating the deficit of dark matter. However, the presence of a significant rotation of the globular cluster population could substantially modify this conclusion. Here we present the discovery of such a signature of rotation in the kinematics of NGC 1052-DF2's globular clusters, with a velocity amplitude of $\sim12.44^{+4.40}_{-5.16}$ km/s, which, through Bayesian model comparison, represents a marginally better fit to the available kinematic data; note that this rotation is distinct from, and approximately perpendicular to, the recently identified rotation of the stellar component of NGC 1052-DF2. Assuming this truly represents an underlying rotation, it is shown that the determined mass depends upon the inclination of the rotational component and, with a moderate inclination, the resultant mass to light ratio can exceed $M/L\sim10$.
description: 5 pages, 4 figures, accepted for publication in MNRAS Letters
Model for Breakdown of Laminar Flow of a Quantum Hall Fluid Around a Charged Impurity: Comparison with Experiment
Creators: name: Martin, A. M.
name: Benedict, K. A.
name: Sheard, F. W.
name: Eaves, L.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In samples used to maintain the US resistance standard the breakdown of the dissipationless integer quantum Hall effect occurs as a series of dissipative voltage steps. A mechanism for this type of breakdown is proposed, based on the generation of magneto-excitons when the quantum Hall fluid flows past an ionised impurity above a critical velocity. The calculated generation rate gives a voltage step height in good agreement with measurements. We also compare this model to a hydrodynamic description of breakdown.
description: 4 pages, 3 figures, submitted for proceedings of EP2DS
Use of endogenous knowledge in treating pests and diseases of small ruminants in Obokun government area of Osun State
Creators: name: Omotara, O. A.
name: Olutegbe, N. S.
name: Omotara, O. A.
name: Olutegbe, N. S.
Publisher: name: Unknown
Year: 2015
Subjects: subject: Livestock Production/Industries
subject: Endogenous knowledge
subject: small ruminants
subject: ectoparasite and endoparasite
subject: animal diseases
subject: animal pests

description: This paper examined the use of endogenous knowledge in treating pests and diseases of goats and sheep in Obokun Local Government Area of Osun State. Multi stage sampling technique was used to select one hundred and twenty rearers of small ruminants in the study area. Data were collected through a structured interview schedule and analysed using frequency counts and chi-square. Majority (88.3%) of the respondents were female, while 60.0% had one form of education or the other. The mean age was 50.7±16.5years. The most used method in treating pests of small ruminants were adding shea butter oil and salt in treating mange̅ 1.23 ± 0.67 , hand picking of tick ̅ 1.08 ± 0.76 and rubbing the body of animal with palm kernel oil and salt for lice 0.45 ± 0.77 , while those of diseases include treating helminthiasis with lime orange and grinded pawpaw seed ̅ 1.51 ± 0.63 , using solution of charcoal and bitter leaf for diarrhoea̅ 1.30 ± 0.64 , and treating catarrh with tobacco snuff and pepper ̅ 1.26 ± 0.63 . Larger proportion (71.7%) of the respondents were categorized as high level users of endogenous methods. Educational level, marital status and sex do not significantly affect the level of use of endogenous knowledge. Endogenous knowledge is still relevant in managing common pest and diseases of small ruminants in the rural areas. It is therefore recommended that the knowledge be documented and incorporated in preventive and curative medicine for ease of passage from generation to generation so as to prevent it from extinction.
Evolution and Color-Dependence of the Galaxy Angular Correlation Function: 350,000 Galaxies in 5 Square Degrees
Creators: name: Coil, Alison L.
name: Newman, Jeffrey A.
name: Kaiser, Nick
name: Davis, Marc
name: Ma, Chung-Pei
name: Kocevski, Dale D.
name: Koo, David C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: When applied to deep photometric catalogs, the two-point angular correlation function, w(theta), is a sensitive probe of the evolution of galaxy clustering properties. Here we present measurements of w(theta) as a function of I_AB magnitude and (R-I) color to a depth of I_AB=24, using a sample of ~350,000 galaxies covering 5 degrees^2 in total over 5 separate fields. Using redshifts of 3319 galaxies in early DEEP2 Galaxy Redshift Survey data, we construct robust galaxy redshift distributions as a function of I_AB and R_AB magnitude and (R-I) color for galaxies between 01 to z=0. A model in which the comoving scale-length, x_0, evolves linearly with redshift, x_0(z)=x_0(0)(1-Bz), fits the data better than the 'epsilon' model proposed by Groth and Peebles (1977). The clustering properties depend strongly on observed (R-I) color, with both the reddest and bluest galaxies exhibiting large clustering amplitudes and steeper slopes. Different observed (R-I) color ranges are sensitive to very disparate redshift regimes. Red galaxies with (R-I)~1.5 lie in a narrow redshift range centered at z~0.85 and have a comoving scale length of clustering at z=0.85 of x_0=5.0 +/-0.3 Mpc/h. These galaxies have early-type spectra and are likely progenitors of massive local ellipticals. The bluest galaxies with (R-I)~0 appear to be a mix of star-forming galaxies, both relatively local (z~0.3-0.6) dwarfs and bright z>1.4 galaxies, and broad-line AGN. We find that local blue dwarfs are relatively unclustered, with x_0=1.6 +/-0.2 Mpc/h. The z>1.4 blue galaxies have a larger clustering scale-length, x_0>5 Mpc/h.
description: 23 pages, 17 figures, accepted for publication in ApJ
How to make a traversable wormhole from a Schwarzschild black hole
Creators: name: Hayward, Sean A.
name: Koyama, Hiroko
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The theoretical construction of a traversable wormhole from a Schwarzschild black hole is described, using analytic solutions in Einstein gravity. The matter model is pure phantom radiation (pure radiation with negative energy density) and the idealization of impulsive radiation is employed.
description: 4 pages, 4 figures
Productivity Losses and Costs in the Less-Common Systemic Autoimmune Rheumatic Diseases
Creators: name: McCormick, Natalie
name: Marra, Carlo A.
name: Aviña-Zubieta, J. Antonio
Publisher: name: Current Rheumatology Reports
Year: 2019

description: Purpose of Review: We synthesized the literature on productivity losses and costs in the less-common systemic autoimmune rheumatic diseases: Sjogren’s syndrome (SjS), systemic sclerosis (SSc), poly/dermatomyositis (PM/DM), and systemic vasculitides (SV). Recent Findings: Of 29 studies located, 12 were published 2012-onwards (SSc=6, SjS=2, PM/DM=2, SV=2). In these, 25% of PM/DM, and 21%-26% of SV, were work disabled, 22% of SSc stopped work within three years of diagnosis, and annual costs of absenteeism in SSc averaged $12,024 2017 USD. Very few studies reported on costs, presenteeism (working at reduced levels), or unpaid productivity loss. Across multiple SARDs, major drivers of lost productivity were generalised items like pain, depression, and fatigue, rather than disease-specific factors. Summary: Evidence suggests that work disability is common in SSc and strikes quickly. However in SSc and other SARDs, more comprehensive estimates are needed, which include absenteeism and presenteeism from paid and unpaid work, costs, and drivers of productivity loss.
title: Knowing the extrahepatic vessels dependent on the hepatic artery: assuring a successful hepatic endovascular treatment.
Creators: name: Soriano Aguadero, Ignacio
Publisher: name: European Congress of Radiology
Year: 2021
Subjects: subject: Ischaemia / Infarction
subject: Education and training
subject: Embolisation
subject: Chemoembolisation
subject: Arthrography
subject: Percutaneous
subject: CT-Angiography
subject: CT
subject: Interventional vascular
subject: Arteries / Aorta
subject: Anatomy

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: *Describe the extrahepatic vessels (EHV) dependent on hepatic artery anatomy. *The importance of EHV dependent on the hepatic artery in hepatic interventional radiology treatment...
Oscillatory wave fronts in chains of coupled nonlinear oscillators
Creators: name: Carpio, A.
name: Bonilla, L. L.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Wave front pinning and propagation in damped chains of coupled oscillators are studied. There are two important thresholds for an applied constant stress $F$: for $|F| F_{cs}$ (static Peierls stress) there are only stable moving wave fronts. For piecewise linear models, extending an exact method of Atkinson and Cabrera's to chains with damped dynamics corroborates this description. For smooth nonlinearities, an approximate analytical description is found by means of the active point theory. Generically for small or zero damping, stable wave front profiles are non-monotone and become wavy (oscillatory) in one of their tails.
description: 18 pages, 21 figures, 2 column revtex. To appear in Phys. Rev. E
Utilisation of access to global online research in agriculture (agora) by final year undergraduate students of the faculty of agriculture and forestry, university of Ibadan, Nigeria
Creators: name: Badiru, I. O.
name: Fawole, O. P.
name: Nkwocha, C. A.
name: Badiru, I. O.
name: Fawole, O. P.
name: Nkwocha, C. A.
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agricultural and Food Policy
subject: Research Methods/ Statistical Methods
subject: AGORA
subject: online research
subject: utilisation of AGORA

description: This study investigated the utilisation of Access to Global On-line Research in Agriculture (AGORA) by final year undergraduate students of the Faculty of Agriculture and Forestry, University of Ibadan. A total of 140 respondents were selected from the eight departments in the faculty using simple random sampling technique. Data collection was done using a structured questionnaire and the data were analysed using both descriptive (frequency, percentage, means) and inferential statistics (Chi-square and PPMC) at P=0.05. The results revealed that 52.1% of the respondents were female, 90% were single, 97.1% were computer literate and the mean age of the respondents was 24 years. About 67.1% had high level of awareness on AGORA. Constraints to the use of AGORA identified included irregular power supply (64.3%), limited access to AGORA password (52.8%), and lack of awareness (49.3%). Significant relationship existed between level of awareness and use of AGORA (r= 0.334; p = 0.05). There was no significant relationship between constraint and utilisation of AGORA (χ2 = 3.334; p > 0.05). Hence, there is a need for increased publicity in order to encourage attitudinal change and improve the utilisation of AGORA by the students.
H^+_2$ in a strong magnetic field described via a solvable model
Creators: name: Benguria, R. D.
name: Brummelhuis, R.
name: Duclos, P.
name: Perez-Oyarzun, S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 46N50

description: We consider the hydrogen molecular ion $H^+_2$ in the presence of a strong homogeneous magnetic field. In this regime, the effective Hamiltonian is almost one dimensional with a potential energy which looks like a sum of two Dirac delta functions. This model is solvable, but not close enough to our exact Hamiltonian for relevant strenght of the magnnetic field. However we show that the correct values of the equilibrium distance as well as the binding energy of the ground state of the ion, can be obtained when incorporating perturbative corrections up to second order. Finally, we show that $ He_2^{3+}$ exists for sufficiently large magnetic fields.
LIDAR-based remote sensing for archaeological applications
Creators: name: Masini, Nicola
name: Coluzzi, Rossella
name: Lasaponara, Rosa
Publisher: name: Geographisches Institut der Universität zu Köln - Kölner Geographische Arbeiten
Year: 2011
Subjects: LIDAR
Remote Sensing

description: The Airborne Laser Scanning (ALS) technology, also referred to as LIDAR (Light Detection And Ranging), represents the most relevant advancement of Earth Observation (EO) techniques applied to archaeological research in the last decade. It allows us to overcome some limits of satellite optical remote sensing in detecting archaeological remains covered by dense vegetation as well as microrelief of cultural interest in bare-ground sites. Currently, a LIDAR survey can be carried out by using two different types of ALS sensor systems: (i) conventional scanners or discrete echo scanners, and (ii) Full-Waveform (FW) scanners. The first one generally delivers only the first and last echo, thus losing many other reflections. The second one is able to detect the entire echo waveform for each emitted laser beam, thus offering improved capabilities especially in areas with complex morphology and/or dense vegetation cover. This paper shows the results obtained by processing point clouds taken from FW scanners for two emblematic study cases in Southern Italy. The first one is the abandoned medieval village of Monte Serico, located on a bare-ground hilly plateau, the second one is the Bosco dellIncoronata. By using an approach based on the use and processing of different shaded Digital Terrain Models (DTMs), the study allowed us to improve the reconstruction of the urban fabric and the paleoenvironmental setting, respectively.
description: Proceedings on the Workshop of Remote Sensing Methods for Change Detection and Process Modelling, 18-19 November 2010, University of Cologne, Germany, Kölner Geographische Arbeiten, 92, pp. 79-91
Active virological surveillance in backyard ducks in Bangladesh: detection of avian influenza and gammacoronaviruses
Creators: name: Rokshana Parvin
name: Congriev Kumar Kabiraj
name: Tanjin Tamanna Mumu
name: Emdadul Haque Chowdhury
name: Islam, Mohammad Rafiqul
name: Beer, Martin
name: Harder, Timm
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: Computational Biology

description: Domestic waterfowl play an important role in the perpetuation and transmission of avian pathogens including avian influenza viruses (AIV) of low and high pathogenicity, which pose severe economic and public health concerns in Bangladesh. This study focused on active surveillance of several avian viral pathogens with a special reference to AIV in selected backyard duck populations in Bangladesh. A total of 500 pooled oropharyngeal and cloacal samples from individual ducks of four districts were tested by real time PCRs for the presence of AIV, avian avulavirus-1, anatid herpesvirus-1, avian parvovirus, avian bornavirus and avian coronavirus. The investigation identified 27 (5.4%) ducks positive for AIV and 12 (2.4%) positive for avian coronavirus. In 13 samples, RNA specific for AIV H4N6 was detected. Phylogenetic analysis of the AIV haemagglutinin H4 and neuraminidase N6 genes suggested a clustering of Bangladeshi AIV H4N6 in Eurasian lineage group 2. Other AIV positive samples had very low virus loads (Cq > 36) and were not subtyped. Coronaviral sequences of a fragment of the polymerase gene were related to Eurasian-Australian duck gamma-coronaviruses. Our current active surveillance in free-range domestic backyard ducks in Bangladesh failed to detect highly pathogenic (HP) AIV in contrast to our previous passive monitoring study. Nevertheless, active monitoring of domestic duck populations may be important to highlight presence and transmission dynamics of economically less important AIV that still may serve as reassortment partners for the generation of new HP and zoonotic AIV. RESEARCH HIGHLIGHTSActive surveillance for viral pathogens in domestic free-range backyard ducks.Detection of avian influenza virus subtype H4N6.First identification of avian gammacoronavirus in ducks in Bangladesh. Active surveillance for viral pathogens in domestic free-range backyard ducks. Detection of avian influenza virus subtype H4N6. First identification of avian gammacoronavirus in ducks in Bangladesh.
MULTIWALL CARBON NANOTUBE, GRAPHENE AND JUTE MAT FIBRE REINFORCED EPOXY NANOCOMPOSITES
Creators: name: Sharma, Arun Kumar
name: Sharma, Sarika
name: Bhandari, Rakesh
name: .Shri Krishna Dhakad
name: Camelia Pinca – Bretotean
Publisher: name: Zenodo
Year: 2022
Subjects: MULTIWALL CARBON NANOTUBE, GRAPHENE , JUTE MAT FIBRE , EPOXY, NANOCOMPOSITE

description: PATENT APPLICATION PUBLICATION (INDIA), Application No.202221044728, Date of filing of Application :05/08/2022 , Publication Date : 19/08/2022 Abstract : The growth of a civilization that is pollution-free and good for the environment has been made possible by the contemporary world and the shifting demands it places on society. In this scenario, one of the most viable solutions is the use of natural fibre polymer composites. When it comes to the processing of materials, natural fibres have a number of advantages over synthetic materials, low cost, easily available and provide high-quality characteristics. In this research Jute mat fibre with multi-wall carbon nanotube (MWCNT) and Graphene (Gr) are used as reinforcing material in the epoxy matrix and investigate the best possible combination of reinforcement which have the best impact properties. No. of Pages : 15 No. of Claims : 8
31275: Machine Gunner in Baghdad
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: Graham Fallon knows very little about his grandfather, William. He worked as a tram driver before and after his time in the Army. This item has been handed down through the family over the past 100 years.
Rural Fish Marketing in Africa: Some Empirical Considerations from Nigeria
Creators: name: Adekanye, Tomilayo O.
name: Adekanye, Tomilayo O.
Publisher: name: Unknown
Year: 1983
Subjects: Resource /Energy Economics and Policy

description: This paper focuses on rural marketing in Africa. A case study of fish mar­keting was undertaken in Nigeria in I 982. An analysis of the socio-economic profile of the respondents studied indicated that women rather than men were involved in marketing. However, there was a family linkage in the fishery industry in that the women often obtained supplies of fresh fish from their husbands who were often fishermen. This reduced possible collusive activities on the part of the middlemen, implying that the system was relatively efficient, particularly in economic terms. An analysis of marketing margins indicated that frozen fish marketing, which had refrigerated facilities at the producer and wholesale levels, was technically more efficient than fresh fish marketing which did not have these facilities and was less well organized. The main implication of the Nigerian case study for Africa is that rural market development centres on adequate provision of infrastructural facilities for storage, processing, transportation etc
Solving Advanced Argumentation Problems with Answer Set Programming
Creators: name: Brewka, Gerhard
name: Diller, Martin
name: Heissenberger, Georg
name: Linsbichler, Thomas
name: Woltran, Stefan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Powerful formalisms for abstract argumentation have been proposed, among them abstract dialectical frameworks (ADFs) that allow for a succinct and flexible specification of the relationship between arguments, and the GRAPPA framework which allows argumentation scenarios to be represented as arbitrary edge-labelled graphs. The complexity of ADFs and GRAPPA is located beyond NP and ranges up to the third level of the polynomial hierarchy. The combined complexity of Answer Set Programming (ASP) exactly matches this complexity when programs are restricted to predicates of bounded arity. In this paper, we exploit this coincidence and present novel efficient translations from ADFs and GRAPPA to ASP. More specifically, we provide reductions for the five main ADF semantics of admissible, complete, preferred, grounded, and stable interpretations, and exemplify how these reductions need to be adapted for GRAPPA for the admissible, complete and preferred semantics. Under consideration in Theory and Practice of Logic Programming (TPLP).
description: Under consideration in Theory and Practice of Logic Programming (TPLP)
title: Artificial intelligence development for detecting microcalcification within mammography
Creators: name: Aphinives, Chalida
Publisher: name: European Congress of Radiology
Year: 2021
Subjects: subject: Calcifications / Calculi
subject: Computer Applications-Detection, diagnosis
subject: Mammography
subject: Artificial Intelligence

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: To test the possibility of developing AI for detecting microcalcification within mammography under "Custom Vision" which is one of the free-trial services from Microsoft...
31256: Wolverhampton Airman
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: This collection of items relate to Jack Hughes' service in the RFC/RAF. He was not related to Malcolm Hill, but they knew each other because they both lived in Bruford Rd, Penn Fields, Wolverhampton. Jack was a carpenter before enlisting - a vital job in early aircraft maintenance.

He eventually became an air-gunner. Nothing is known about Jack's wartime career. However, the rolled map indicates he may have been engaged in flying regularly between the UK and Versailles. This may have been as a mail delivery pilot between London and Paris. After the war Jack worked at the Wolverhampton Express and Star newspaper.
Virtual Photon Correction to the $K^+\toπ^+π^0π^0$ Decay
Creators: name: Nehme, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider electromagnetic corrections to the non-leptonic kaon decay, $K^+\toπ^+π^0π^0$, due to explicit virtual photons only. The decay amplitude is calculated at one-loop level in the framework of Chiral Perturbation Theory. The interest in this process is twofold: It is actually measured by the NA48 collaboration from one side, and, the value of the amplitude at the $ππ$ threshold gives access to $ππ$ scattering lengths from the other side. We found that the present correction is about 5 to 6% the value of the Born amplitude squared. Combined with another piece published recently, this fixes the size of isospin breaking correction to the amplitude squared to 7% its one-loop level value in the absence of isospin breaking and at the center of Dalitz plot.
description: 29 pages, 1 LaTeX file, 1 pdf file including all figures
Verification and Validation of Computer Models for Diagnosing Breast Cancer Based on Machine Learning for Medical Data Analysis
Creators: name: Levshinskii, Vladislav
name: Polyakov, Maxim
name: Losev, Alexander
name: Khoperskov, Alexander
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Machine Learning (cs.LG)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences
subject: 68U20

description: The method of microwave radiometry is one of the areas of medical diagnosis of breast cancer. It is based on analysis of the spatial distribution of internal and surface tissue temperatures, which are measured in the microwave (RTM) and infrared (IR) ranges. Complex mathematical and computer models describing complex physical and biological processes within biotissue increase the efficiency of this method. Physical and biological processes are related to temperature dynamics and microwave electromagnetic radiation. Verification and validation of the numerical model is a key challenge to ensure consistency with medical big data. These data are obtained by medical measurements of patients. We present an original approach to verification and validation of simulation models of physical processes in biological tissues. Our approach is based on deep analysis of medical data and we use machine learning algorithms. We have achieved impressive success for the model of dynamics of thermal processes in a breast with cancer foci. This method allows us to carry out a significant refinement of almost all parameters of the mathematical model in order to achieve the maximum possible adequacy.
description: 15 pages, 9 figures, Creativity in Intelligent Technologies and Data Science (CIT&DS 2019), Volgograd, September, 2019
Excitation of post-AGB Star Binary Eccentricity by Massive Polar-Aligned Circumbinary Disks
Creators: name: Huang, Shunquan
name: Martin, Rebecca G.
name: Lubow, Stephen H.
Publisher: name: arXiv
Year: 2025
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Many post-AGB star binaries are observed to have relatively high orbital eccentricities (up to 0.6). Recently, AC Her was observed to have a polar-aligned circumbinary disk. We perform hydrodynamic simulations to explore the impact of a polar-aligned disk on the eccentricity of a binary. For a binary system with central masses of 0.73 M_sun and 1.4 M_sun, we find that a disk with a total mass of 0.1 M_sun can enhance the binary eccentricity from 0.2 to 0.7 within 5000 years, or from 0.01 to 0.65 within 15000 years. Even if the disk mass is as low as 0.01 M_sun, the binary eccentricity grows within our simulation time while the system remains stable. These eccentricity variations are associated with the variations of the inclination between the disk and the binary orbit due to von Zeipel-Kozai-Lidov oscillations. The oscillations eventually damp and leave the binary eccentricity at a high value. The numerical results are in good agreement with analytical estimates. In addition, we examine the AC-Her system and find that the disk mass should be on the order of 10^(-3)M_sun for the disk to remain polar.
description: Accepted for publication in The Astrophysical Journal. 11 pages, 11 figures
Supersymmetric Calogero models from superfield gauging
Creators: name: Ivanov, E.
name: Lechtenfeld, O.
name: Fedoruk, S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 70F10, 81Q60

description: Using the superfield gauging procedure, we construct new ${\cal N}\,{=}\,2$ and ${\cal N}\,{=}\,4$ superfield systems that generalize Calogero models. In the bosonic limit, these systems yield rational Calogero models and hyperbolic Calogero-Sutherland models in the ${\cal N}\,{=}\,2$ case, and their ${\rm U}(2)$ spin generalization in the ${\cal N}\,{=}\,4$ case.
description: 8 pages, Talk given by E. Ivanov at International Bogolyubov Conference "Problems of Theoretical and Mathematical Physics". September 9-13, 2019; Moscow-Dubna, Russia
Mental Models Enlighten Assumptions about Farmers, Land Tenure and Soil Management
Creators: name: Braito, Michael
name: Flint, Courtney
name: Leonhardt, Heidi
name: Penker, Marianne
name: Braito, Michael
name: Flint, Courtney
name: Leonhardt, Heidi
name: Penker, Marianne
Publisher: name: Unknown
Year: 2019
Subjects: subject: Land Economics/Use
subject: property structure
subject: soil management
subject: socio-psychological factors
subject: questionnaire survey

description: Agricultural tenancy is increasing, as is soil degradation and erosion. Theory suggests that these trends may be correlated, yet empirical findings are ambiguous. This paper broadens the perspective on mental models influencing farmers’ soil management and disentangles assumed relationships with agricultural land tenancy. Results of a survey of farmers (n=344) in Austria reveal that tenure is less important for understanding farmers’ soil management practices than items of mental models. The study sheds new light on the assumption that farmers’ soil management practices depend on ownership status and planning horizons, as often suggested by agricultural economic theory.
Linoleic acid, α-linolenic acid, and monolinolenins as antibacterial substances in the heat-processed soybean fermented with Rhizopus oligosporus
Creators: name: Kusumah, Dewi
name: Wakui, Misaki
name: Murakami, Mai
name: Xiaonan Xie
name: Kabuyama Yukihito
name: Maeda, Isamu
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Hematology

description: Antibacterial activities against Staphylococcus aureus and Bacillus subtilis were found in an ethanol fraction of tempe, an Indonesian fermented soybean produced using Rhizopus oligosporus. The ethanol fraction contained free fatty acids, monoglycerides, and fatty acid ethyl esters. Among these substances, linoleic acid and α-linolenic acid exhibited antibacterial activities against S. aureus and B. subtilis, whereas 1-monolinolenin and 2-monolinolenin exhibited antibacterial activity against B. subtilis. The other free fatty acids, 1-monoolein, monolinoleins, ethyl linoleate, and ethyl linolenate did not exhibit bactericidal activities. These results revealed that R. oligosporus produced the long-chain polyunsaturated fatty acids and monolinolenins as antibacterial substances against the Gram-positive bacteria during the fungal growth and fermentation of heat-processed soybean. Tempe contains linoleic and α-linolenic acids, which are bactericidal against S. aureus and B. subtilis, and monolinolenins, which are bactericidal against B. subtilis.
title: Beyond the Filling Defects - Insights into Interpretation of Dual Energy Computerized Tomography Pulmonary Angiography with Perfusion Maps
Creators: name: Lampner, Aviad
Publisher: name: European Congress of Radiology
Year: 2021
Subjects: subject: Embolism / Thrombosis
subject: Education and training
subject: Education
subject: CT
subject: Lung

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To review dual energy (DE) computerized tomography (CT) processing tools in computerized tomography pulmonary angiography (CTPA). To review the various patterns of lung perfusion abnormalities detected on perfusion maps in acute and chronic...
title: The impact of a monthly health and safety survey on management of preventable risks in 236 diagnostic imaging departments in 15 countries
Creators: name: Papachristodoulou, Athanasia
Publisher: name: European Congress of Radiology
Year: 2021
Subjects: subject: Quality assurance
subject: Safety
subject: Computer Applications-General
subject: MR
subject: CT
subject: Management

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: A key pillar of clinical quality is striving for continuous improvement. Undesirable events may occur in medical care and in majority of cases they are preventable (1). A detailed system of monitoring, categorization, enhanced visibility, mitigation...
The diameter and evolutionary state of Procyon A
Creators: name: Kervella, P.
name: Thevenin, F.
name: Morel, P.
name: Berthomieu, G.
name: Borde, P.
name: Provost, J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the angular diameter measurement obtained with the VINCI/VLTI instrument on the nearby star Procyon A (alpha CMi A, F5IV-V), at a relative precision of +/- 0.9%. We obtain a uniform disk angular diameter in the K band of UD = 5.376 +/- 0.047 mas and a limb darkened value of LD = 5.448 +/- 0.053 mas. Together with the Hipparcos parallax, this gives a linear diameter of 2.048 +/- 0.025 D_sun. We use this result in combination with spectroscopic, photometric and asteroseismic constraints to model this star with the CESAM code. One set of modeling parameters that reproduces the observations within their error bars are an age of 2314 Myr, an initial helium mass fraction Y_i = 0.301 and an initial mass ratio of heavy elements to hydrogen Z/X_i = 0.0314. We also computed the adiabatic oscillation spectrum of our model of Procyon A, giving a mean large frequency separation of Delta nu_0 = 54.7 microHz. This value is in agreement with the seismic observations by Martic et al. (1999, 2001). The interferometric diameter and the asteroseismic large frequency spacing together suggest a mass closer to 1.4 M_sun than to 1.5 M_sun. We conclude that Procyon is currently ending its life on the main sequence, as its luminosity class indicates.
description: 7 pages, 5 figures, accepted for publication in A&A
Athermal photoelectronic effects in non-crystalline chalcogenides: Current status and beyond
Creators: name: Yannopoulos, Spyros N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The current critical review aims to be more than a simple summary and reproduction of previously published work. Many comprehensive reviews and collections can be found in the literature. The main intention is to provide an account of the progress made in selected aspects of photoinduced phenomena in non-crystalline chalcogenides, presenting the current understanding of the mechanisms underlying such effects. An essential motive for the present review article has been to assess critically published experimental work in the field.
description: 56 pages, 19 figures. To appear in "World Scientific Reference of Amorphous Materials: The Structure, Properties, Modeling and Main Applications" (in 3 volumes). Volume 1: Amorphous Chalcogenides: Structure, Properties, Modeling and Applications. Published by World Scientific in 2020
Convex lattice polygons of fixed area with perimeter dependent weights
Creators: name: Rajesh, R.
name: Dhar, Deepak
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study fully convex polygons with a given area, and variable perimeter length on square and hexagonal lattices. We attach a weight t^m to a convex polygon of perimeter m and show that the sum of weights of all polygons with a fixed area s varies as s^{-theta_{conv}} exp[K s^(1/2)] for large s and t less than a critical threshold t_c, where K is a t-dependent constant, and theta_{conv} is a critical exponent which does not change with t. We find theta_{conv} is 1/4 for the square lattice, but -1/4 for the hexagonal lattice. The reason for this unexpected non-universality of theta_{conv} is traced to existence of sharp corners in the asymptotic shape of these polygons.
description: 8 pages, 5 figures, revtex4
Quantum principle of relativity
Creators: name: Dragan, Andrzej
name: Ekert, Artur
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show that the local and deterministic mode of description is not only in conflict with the quantum theory, but also with relativity. We argue that elementary relativistic properties of spacetime lead to the emergence of a non-deterministic quantum-mechanical picture involving quantum superpositions and complex probability amplitudes.
description: 9 pages, 6 figures
Latency characteristics in specific pathogen-free chickens 21 and 35 days after intra-tracheal inoculation with vaccine or field strains of infectious laryngotracheitis virus
Creators: name: Thilakarathne, Dulari S.
name: Hartley, Carol A.
name: Diaz-Méndez, Andrés
name: Quinteros, José A.
name: Fakhri, Omid
name: Coppo, Mauricio J. C.
name: Devlin, Joanne M.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: Computational Biology

description: Latency is an important feature of infectious laryngotracheitis virus (ILTV) yet is poorly understood. This study aimed to compare latency characteristics of vaccine (SA2) and field (CL9) strains of ILTV, establish an in vitro reactivation system and examine ILTV infection in peripheral blood mononuclear cells (PBMC) in specific pathogen-free chickens. Birds were inoculated with SA2 or CL9 ILTV and then bled and culled at 21 or 35 days post-inoculation (dpi). Swabs (conjunctiva, palatine cleft, trachea) and trigeminal ganglia (TG) were examined for ILTV DNA using PCR. Half of the TG, trachea and PBMC were co-cultivated with cell monolayers to assess in vitro reactivation of ILTV infection. ILTV DNA was detected in the trachea of approximately 50% of ILTV‐inoculated birds at both timepoints. At 21 dpi, ILTV was detected in the TG only in 29% and 17% of CL9- and SA2-infected birds, respectively. At 35 dpi, ILTV was detected in the TG only in 30% and 10% of CL9- and SA2-infected birds, respectively. Tracheal organ co-cultures from 30% and 70% of CL9- and SA2-infected birds, respectively, were negative for ILTV DNA at cull but yielded quantifiable DNA within 6 days post-explant (dpe). TG co-cultivation from 30% and 40% of CL9-and SA2-infected birds, respectively, had detectable ILTV DNA within 6 dpe. Latency characteristics did not substantially vary based on the strain of virus inoculated or between sampling timepoints. These results advance our understanding of ILTV latency and reactivation. RESEARCH HIGHLIGHTSFollowing inoculation, latent ILTV infection was detected in a large proportion of chickens, irrespective of whether a field or vaccine strain was inoculated.In vitro reactivation of latent ILTV was readily detected in tracheal and trigeminal ganglia co-cultures using PCR.ILTV latency observed in SPF chickens at 21 days post-infection was not substantially different to 35 days post-infection. Following inoculation, latent ILTV infection was detected in a large proportion of chickens, irrespective of whether a field or vaccine strain was inoculated. In vitro reactivation of latent ILTV was readily detected in tracheal and trigeminal ganglia co-cultures using PCR. ILTV latency observed in SPF chickens at 21 days post-infection was not substantially different to 35 days post-infection.
The Variability of Gamma-Ray Bursts that Create Afterglows
Creators: name: Munoz, Joseph A.
name: Tan, Jonathan C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We consider whether the variability properties of Gamma-Ray Bursts (GRBs) that produce bright optical and longer wavelength transient afterglows (A-GRBs) are the same as a larger, inclusive sample of bright, long-duration GRBs, selected only by their gamma-ray emission. This sample may include a significant population of physically distinct ``dark'' or ``faint-afterglow'' GRBs with different variability properties, or may be composed of a single population, some of which lack afterglows only because of observational selection effects. We argue that the structure function is the most appropriate method for measuring the variability of bursts because of their transient and aperiodic nature. We define a simple statistic: the ratio of the integrated structure function from 0.1 to 1 s compared to that from 0.1 to 10 s, as measured in the observer frame. To avoid instrumental effects we restrict our analysis to GRBs with BATSE data. Comparing 10 A-GRBs to a ``main'' sample of about 500 bursts, we find there is a probability of only 0.03 of the samples being drawn from the same population, with the A-GRBs tending to have relatively less power on sub-second timescales. We conclude that this result is tentative evidence for variations in the properties of GRB progenitors that affect both the gamma-ray and afterglow properties of long-duration GRBs. In addition, our method of analyzing variability identifies a characteristic timescale of ~1 s, below which variability is suppressed, and finds a trend of increased short timescale variability at higher gamma-ray energies. The long-duration GRBs that we identify as having the most sub-second timescale variability, may be relatively bright examples of short-duration GRBs.
description: 9 pages, accepted to ApJ
Development, Adoption, and Management of Drought-Tolerant Corn in the United States
Creators: name: McFadden, Jonathan
name: Smith, David
name: Wechsler, Seth
name: Wallander, Steven
name: McFadden, Jonathan
name: Smith, David
name: Wechsler, Seth
name: Wallander, Steven
Publisher: name: Unknown
Year: 2019
Subjects: subject: Crop Production/Industries
subject: Environmental Economics and Policy
subject: Farm Management
subject: International Development
subject: Land Economics/Use
subject: Production Economics
subject: Resource /Energy Economics and Policy
subject: Risk and Uncertainty
subject: drought
subject: genetically engineered crops
subject: soil moisture conservation
subject: irrigation
subject: corn
subject: corn yields
subject: Agricultural Resource Management Survey

description: Drought, a recurring source of crop yield losses and crop failure, often prompts Federal natural disaster and crop insurance payments to U.S. farmers. Few ways exist to substantially reduce yield losses due to drought, although a new tool has recently become available. Drought tolerance produced using conventional breeding methods was first commercially introduced in U.S. corn hybrids in 2011. Genetically engineered (GE) drought tolerance was introduced in hybrids in 2012 but did not become broadly available until 2013. However, the vast majority of drought-tolerant (DT) corn planted in 2016 had one or more GE traits (e.g., herbicide tolerance and/or insect resistance). By 2016, 22 percent of total U.S. planted corn acreage was drought tolerant. Adoption is more concentrated in drought-prone regions of the United States, despite the hybrids’ limited abilities to protect against extreme-or-worse droughts. Significant DT corn acreage is also located in non-drought-prone regions and the broader Corn Belt. This report documents the development, adoption, and management of DT corn in the United States, emphasizing the roles of recent and frequent exposure to drought; moisture-conservation practices; GE seed traits and pricing; and irrigation.
Numerical Verification of Fluctuation Dissipation Theorem for Isolated Quantum Systems
Creators: name: Noh, Jae Dong
name: Sagawa, Takahiro
name: Yeo, Joonhyun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The fluctuation dissipation theorem~(FDT) is a hallmark of thermal equilibrium systems in the Gibbs state. We address the question whether the FDT is obeyed by isolated quantum systems in an energy eigenstate. In the framework of the eigenstate thermalization hypothesis, we derive the formal expression for two-time correlation functions in the energy eigenstates or in the diagonal ensemble. They satisfy the Kubo-Martin-Schwinger condition, which is the sufficient and necessary condition for the FDT, in the infinite system size limit. We also obtain the finite size correction to the FDT for finite-sized systems. With extensive numerical works for the XXZ spin chain model, we confirm our theory for the FDT and the finite size correction. Our results can serve as a guide line for an experimental study of the FDT on a finite-sized system.
description: 12 pages with revised figures
Exact asymptotic form of the exchange interactions between shallow centers in doped semiconductors
Creators: name: Gor'kov, L. P.
name: Krotkov, P. L.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: The method developed in [L. P. Gor'kov and L. P. Pitaevskii, Sov. Phys. Dokl. 8, 788 (1964); C. Herring and M. Flicker, Phys. Rev. 134, A362 (1964)] to calculate the asymptotic form of exchange interactions between hydrogen atoms in the ground state is extended to excited states. The approach is then applied to shallow centers in semiconductors. The problem of the asymptotic dependence of the exchange interactions in semiconductors is complicated by the multiple degeneracy of the ground state of an impurity (donor or acceptor) center in valley or band indices, crystalline anisotropy and strong spin-orbital interactions, especially for acceptor centers in III-V and II-VI groups semiconductors. Properties of two coupled centers in the dilute limit can be accessed experimentally, and the knowledge of the exact asymptotic expressions, in addition to being of fundamental interest, must be very helpful for numerical calculations and for interpolation of exchange forces in the case of intermediate concentrations. Our main conclusion concerns the sign of the magnetic interaction -- the ground state of a pair is always non-magnetic. Behavior of the exchange interactions in applied magnetic fields is also discussed.
title: 1 hour-algorithm for multimodal diagnosis of interstitial changes in the lungs during pandemic of SARS-Cov-2 in intensive care unit
Creators: name: Venidiktova, Darya
Publisher: name: European Congress of Radiology
Year: 2021
Subjects: subject: Pathology
subject: Ethics
subject: Complications
subject: Biopsy
subject: Ultrasound
subject: Teleradiology
subject: CT
subject: Lung
subject: Hybrid Imaging

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Nowadays the main attention is paid to the coronavirus infection. MDCT is the "gold standard" in the instrumental diagnosis of lung lesions, it allows to determine and calculate the percentage of lung tissue damage, even if the patient does not have...