cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The impact of recombination energy on simulations of the common envelope binary interaction
Creators: name: Reichardt, Thomas
name: De Marco, Orsola
name: Iaconi, Roberto
name: Price, Daniel
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: During the common envelope binary interaction, the expanding layers of the gaseous common envelope recombine and the resulting recombination energy has been suggested as a contributing factor to the ejection of the envelope. In this paper we perform a comparative study between simulations with and without the inclusion of recombination energy. We use two distinct setups, comprising 0.88-M$_{\odot}$ and 1.8-M$_{\odot}$ giants, that have been studied before and can serve as benchmarks. In so doing we conclude that (i) the final orbital separation is not affected by the choice of equation of state. In other words, simulations that unbind but a small fraction of the envelope result in similar final separations to those that, thanks to recombination energy, unbind a far larger fractions. (ii) The adoption of a tabulated equation of state results in a much greater fraction of unbound envelope and we demonstrate the cause of this to be the release of recombination energy. (iii) The fraction of hydrogen recombination energy that is allowed to do work should be about half of that which our adiabatic simulations use. (iv) However, for the heavier star simulation we conclude that it is helium and not hydrogen recombination energy that unbinds the gas and we determine that all helium recombination energy is thermalised in the envelope and does work. (v)~The outer regions of the expanding common envelope are likely to see the formation of dust. This dust would promote additional unbinding and shaping of the ejected envelope into axisymmetric morphologies.
description: 18 pages, 11 figures. We welcome any comments or questions
title: Feasiblity of performing limited ultrasound assessment for girls with abnormal appendix on ultrasound
Creators: name: Tang, Phua Hwee
Publisher: name: European Congress of Radiology
Year: 2021
Subjects: subject: Tissue characterisation
subject: Health policy and practice
subject: Ultrasound
subject: Paediatric

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To determine the additional abnormalities seen in girls with abnormal appendix diagnosed on pediatric ultrasound cases performed so as to ascertain the coverage required for a limited ultrasound...
Ferromagnetic Ising Spin Chains Emerging from the Spin Ice under Magnetic Field
Creators: name: Hiroi, Zenji
name: Matsuhira, Kazuyuki
name: Ogata, Masao
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A spin-ice compound dysprosium titanate, Dy2Ti2O7, is studied by specific heat measurements in magnetic fields applied along the [110] direction of the cubic unit cell. Above a magnetic field of 0.4 T a relatively sharp peak at T = 1.1 K in the specific heat appears from a broad peak associated with spin-ice freezing at low fields. This new peak is almost independent of field up to 1.5 T, while another broad, field-dependent peak is detected at higher temperature. Under magnetic field along [110] Ising spins on the pyrochlore lattice can be considered to form two orthogonal sets of chains; parallel and perpendicular to the field direction. It is suggested that these perpendicular chains behave as unique ferromagnetic Ising spin chains without long-range order.
description: 4 pages, 5 figures
Development Situations and Recommendations for Zanthoxylum schinifolium Industry in Zhaoyang District of Yunnan Province
Creators: name: ZHANG, Ning
name: WEN, Lianming
name: LI, Zhanghua
name: ZHANG, Ning
name: WEN, Lianming
name: LI, Zhanghua
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agribusiness
subject: Zanthoxylum schinifolium, Industry development, Development status, Recommendations, Zhaoyang District

description: Zhaoyang District is an important Zanthoxylum schinifolium planting area in Zhaotong City and even Yunnan Province, and it has a long history of cultivation. Through the survey and analysis of the status and problems of the development of Z. schinifolium industry, it came up with the recommendations for improving the Z. schinifolium industry, including introducing foreign capital to increase the added value of the products, and strengthening selection and breeding of fine seeds and research of high-yield technologies.
The Role of Education Consulting in the Internationalization of Higher Education
Creators: name: Tian, Jie
Publisher: name: The University of British Columbia
Year: 2017

description: With the internationalization of higher education, the significant role education agents play has been increasingly recognized by educational institutions. A majority of education agents related research discussed the role of education agents in international recruitment from the perspective of educational institutions. Little research is conducted to examine the broader role education consulting plays and the contribution education consulting could make to students’ experience from the perspective of education consultants. Thus, this study examined education consultants’ perspectives regarding the changes in the consulting services provided by education consulting companies (ECCs) to Chinese students wishing to study in the U.S. higher education since 2010 and the concrete feedback education consultants receive from students. The purpose of this study is to better understand the role of education consulting and their impact on students’ post-enrolment experience in U.S. higher education institutions from the perspectives of education consultants. Qualitative interviews are used as the primary method to collect the insights of experienced consultants and managers of ECCs. The official websites of 15 ECCs are also investigated in order to find the current consulting services ECCs provide. This study finds ECCs are extending their traditional services that focus on applications and visas to a longer-term and wider range of services. More prestige institutions graduates and native English-speakers are entering the education consulting industry of China and greater stratification among education consultants is occurring. According to the students’ feedback education consultants have received, the consultants of ECCs have a positive impact on students’ post-enrolment experience in U.S. educational institutions. This study suggests the role ECCs play in the internationalization of higher education should be reconceptualised in a broader context. Recommendations for ECCs and educational institutions are provided to prompt students’ post-enrolment experience and to address the issue of inequality.
Applications of Nijenhuis geometry: Nondegenerate singular points of Poisson-Nijenhuis structures
Creators: name: Bolsinov, Alexey V.
name: Konyaev, Andrey Yu.
name: Matveev, Vladimir S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We study and completely describe pairs of compatible Poisson structures near singular points of the recursion operator satisfying natural non-degeneracy condition.
Planning and Design of Rural Land Renovation in Arid Area of Northwest China——A case study of Lanjiabao, Shaanxi
Creators: name: JIANG, Jiong
name: JIANG, Jiong
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agribusiness
subject: Drought, Land renovation, Soil erosion, Land leveling

description: Taking Lanjiabao, Shaanxi as an example, the land renovation methods for areas with severe drought, water loss and soil erosion were discussed from the planning and design of land leveling, irrigation and drainage engineering, field road engineering, soil and water conservation and other aspects to fundamentally improve the production conditions of local agriculture, thereby effectively inhibiting soil erosion, reducing the impact of wind and sand, greatly enhancing the ability to withstand natural disasters, improving the natural productivity of farmland, and enhancing adjustment capacity. The planning and design of this case project can provide reference for land renovation activities in similar areas.
TECHNOLOGICAL CHANGE AND LABOR'S RELATIVE SHARE: THE MECHANIZATION OF U.S. COTTON PRODUCTION
Creators: name: Martin, Marshall A.
name: Havlicek, Joseph
name: Martin, Marshall A.
name: Havlicek, Joseph
Publisher: name: Unknown
Year: 1977
Subjects: Crop Production/Industries

description: In the pre-war period labor's share in the U.S. manufacturing and agricultural sectors was relatively constant. Keynes called this "a bit of a miracle". Several studies (Kravis, and Ferguson and Moroney) have shown that labor's share in the U.S. manufacturing sector has increased in the post-war period. The opposite appears to have been the case for U.S. agriculture. Two recent studies (Ruttan and Stout, and Lianos) indicate that labor's relative share in the U.S. agricultural sector has declined in the post-war period.
The Case for a Misaligned Relativistic Jet from SN 2001em
Creators: name: Granot, Jonathan
name: Ramirez-Ruiz, Enrico
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: SN 2001em, identified as a Type Ic supernova, has recently been detected in the radio and X-rays, $\gtrsim$ 2 yr after the explosion. The high luminosities at such late times might arise from a relativistic jet viewed substantially off-axis that becomes visible only when it turns mildly relativistic and its emission is no longer strongly beamed away from us. Alternatively, the emission might originate from the interaction of the SN shell with the circumstellar medium. We find that the latter scenario is hard to reconcile with the observed rapid rise in the radio flux and optically thin spectrum, $F_ν\proptoν^{-0.36\pm 0.16}t^{1.9\pm 0.4}$, while these features arise naturally from a misaligned relativistic jet. The high X-ray luminosity provides an independent and more robust constraint -- it requires $\sim 10^{51}$ erg in mildly relativistic ejecta. The source should therefore currently have a large angular size ($\sim$ 2 mas) which could be resolved in the radio with VLBA. It is also expected to be bipolar and is thus likely to exhibit a large degree of linear polarization ($\sim 10%-20%$). The presence of a relativistic outflow in SN 2001em would have interesting implications. It would suggest that several percent of SNe Ib/c produce mildly relativistic jets, with an initial Lorentz factor $Γ_0\gtrsim 2$, while the fraction that produce GRB jets (with $Γ_0\gtrsim 100$) is $\sim 100$ times smaller. This could considerably increase the expected number of transients similar to orphan GRB afterglows in the radio, and to a lesser extent in the optical and X-rays, if there is a continuous distribution in $Γ_0$. Furthermore, this may give further credence to the idea that core collapse SNe, and in particular SNe Type Ib/c, are triggered by bipolar jets.
description: recent X-ray detection of SN 2001em by Chandra strengthens our conclusions
Quasi-linear buildup of Coulomb integrals via the coupling strength parameter in the non-relativistic electronic Schrodinger equation
Creators: name: Kristyan, Sandor
Publisher: name: arXiv
Year: 2019
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The non-relativistic electronic Hamiltonian, Hkin + Hne + aHee, is linear in coupling strength parameter (a), but its eigenvalues (electronic energies) have only quasi-linear dependence on it. Detailed analysis is given on the participation of electron-electron repulsion energy (Vee) in total electronic energy (Etotal electr,k) in addition to the well-known virial theorem and standard algorithm for vee(a=1)=Vee calculated during the standard- and post HF-SCF routines. Using a particular modification in the SCF part of the Gaussian package, we have analyzed the ground state solutions via the parameter a. Technically, with a single line in the SCF algorithm, operator was changed as 1/rij-> a/rij with input a. The most important findings are, 1, vee(a) is quasi-linear function of a, 2, the extension of 1st Hohenberg-Kohn theorem (PSI0(a=1)<=>Hne<=>Y0(a=0)) and its consequences in relation to a. The latter allows an algebraic transfer from the simpler solution of case a=0 (where the single Slater determinant Y0 is the accurate form) to the physical case a=1. Moreover, we have generalized the emblematic Hund rule, virial-, Hohenberg-Kohn- and Koopmans theorems in relation to the coupling strength parameter.
description: 9 pages, 2 figures, 1 table. arXiv admin note: substantial text overlap with arXiv:1709.07352
title: Pontocerebellar angle (PCA) blood vessels segmentation made easy
Creators: name: Gil Martinez, Lidia
Publisher: name: European Congress of Radiology
Year: 2021
Subjects: subject: Education and training
subject: Computer Applications-Virtual imaging
subject: Image manipulation / Reconstruction
subject: Radiographers
subject: Computer applications

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: The aim of this presentation is to explain an easy method of segmentation, registration and contrasting of the vascular structures of the PCA to see the blood vessels and their relationship with the cranial nerves as a support tool in the diagnosis...
On the interplay between astrophysical and laboratory probes of MeV-scale axion-like particles
Creators: name: Ertas, Fatih
name: Kahlhoefer, Felix
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Studies of axion-like particles (ALPs) commonly focus on a single type of interaction, for example couplings only to photons. Most ALP models however predict correlations between different couplings, which change the phenomenology in important ways. For example, an MeV-scale ALP coupled to Standard Model gauge bosons at high energies will in general interact with photons, $W^\pm$ and $Z$ bosons as well as mesons and nucleons at low energies. We study the implications of such scenarios and point out that astrophysical constraints, in particular from SN1987A, may be substantially relaxed, opening up new regions of parameter space that may be explored with laboratory experiments such as NA62.
description: 20 pages, 4 figures + appendices; v2: matches published version
Large-scale structural organization of social networks
Creators: name: Motter, Adilson E.
name: Nishikawa, Takashi
name: Lai, Ying-Cheng
Publisher: name: arXiv
Year: 2003
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The characterization of large-scale structural organization of social networks is an important interdisciplinary problem. We show, by using scaling analysis and numerical computation, that the following factors are relevant for models of social networks: the correlation between friendship ties among people and the position of their social groups, as well as the correlation between the positions of different social groups to which a person belongs.
description: 5 pages, 3 figures, Revtex
Energy in the U.S. Food System in 2000; Structural and Technological Changes
Creators: name: VanArsdall, R. Thomas
name: VanArsdall, R. Thomas
Publisher: name: Unknown
Year: 1977
Subjects: Resource /Energy Economics and Policy

description: Energy saving technologies which currently are undergoing adoption normally are successful for non-energy reasons. New technologies still are using energy to increase production, replace labor and other inputs and reduce risk. Similar motivational forces likely will continue to underlie technological and structural changes for some time.
title: Take care of the penis! A review of the commonest penile emergencies imaged with ultrasound
Creators: name: Cokkinos, Demosthenes
Publisher: name: European Congress of Radiology
Year: 2021
Subjects: subject: Acute
subject: Diagnostic procedure
subject: Ultrasound
subject: Genital / Reproductive system male

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To present the commonest emergency situations in the penis requiring imminent diagnosis, which is usually set by...
Kondo effect in complex mesoscopic structures
Creators: name: Entin-Wohlman, O.
name: Aharony, A.
name: Meir, Y.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the Kondo effect of a quantum dot placed in a complex mesoscopic structure. Assuming that electronic interactions are taking place solely on the dot, and focusing on the infinite Hubbard interaction limit, we use a decoupling scheme to obtain an explicit analytic approximate expression for the dot Green function, which fulfills certain Fermi-liquid relations at zero temperature. The details of the complex structure enter into this expression only via the self-energy for the non-interacting case. The effectiveness of the expression is demonstrated for the single impurity Anderson model and for the T-shaped network.
description: 12 pages 6 figures
title: Small bowel obstruction: should plain radiograph still be the first imaging?
Creators: name: Ayeni, Adewale
Publisher: name: European Congress of Radiology
Year: 2021
Subjects: subject: Obstruction / Occlusion
subject: Education and training
subject: Audit and standards
subject: Plain radiographic studies
subject: CT
subject: Small bowel
subject: Gastrointestinal tract
subject: Abdomen

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: To determine the relevance of plain abdominal radiograph in the diagnosis and treatment of small bowel obstruction in today’s practice. To compare the usefullness of plain abdominal xray and abdominal Computer tomography scan in the management of...
Consumer Valuation of Fuel Economy: Findings from Recent Panel Studies
Creators: name: Klemick, Heather
name: Kopits. Elizabeth
name: Wolverton, Ann
name: Klemick, Heather
name: Kopits. Elizabeth
name: Wolverton, Ann
Publisher: name: Unknown
Year: 2019
Subjects: subject: Resource /Energy Economics and Policy
subject: Consumer valuation
subject: fuel economy
subject: vehicle purchase decisions
subject: benefit-cost analysis

description: Engineering-based studies of energy efficiency often find that firms and consumers fail to adopt technologies that appear to provide net private benefits absent regulation. We examine the recent empirical literature on the extent to which expected future fuel costs are reflected in vehicle prices and therefore valued by consumers when making purchase decisions. These studies improve upon the prior literature due to their use of highly disaggregated panel data that allows for defensible identification strategies. These studies found that vehicle purchase prices reflect about 50 to 100 percent of future fuel expenses, assuming static consumer expectations about future gasoline prices and a discount rate of five to six percent. Recent regulatory analyses have estimated the benefits of more stringent vehicle standards implicitly assuming that no improvements in fuel economy will occur in the baseline, absent regulation. This assumption is consistent with consumers placing no value on future fuel costs when making vehicle purchase decision. The recent empirical evidence supports using a range of consumer valuation assumptions and applying this range consistently in the baseline and regulatory scenarios when modeling consumer purchase and firm investment decisions.
title: Abdominal wall bleedings: successful inferior epigastric artery embolization
Creators: name: Borzelli, Antonio
Publisher: name: European Congress of Radiology
Year: 2021
Subjects: subject: Trauma
subject: Haemorrhage
subject: Haemodynamics / Flow dynamics
subject: Embolisation
subject: CT-Angiography
subject: CT
subject: Catheter arteriography
subject: Interventional vascular
subject: Emergency

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: To assess and highlight the role and clinical efficacy of transcatheter endovascular embolization in rectus muscle bleedings after surgery or trauma and spontaneous bleedings in patients in therapy with...
Terahertz topological plasmon polaritons for robust temperature sensing
Creators: name: Wang, B. X.
name: Zhao, C. Y.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We theoretically investigate the application of topological plasmon polaritons (TPPs) to temperature sensing for the first time. Based on an analogy of the topological edge states in the Su-Schrieffer-Heeger model, TPPs are realized in a one-dimensional intrinsic indium antimonide (InSb) microsphere chain. The existence of TPPs is demonstrated by analyzing the topology of the photonic band structures and the eigenmode distribution. By exploiting the temperature dependence of the permittivity of InSb in the terahertz range, the resonance frequency of the TPPs can be largely tuned by the temperature. Moreover, it is shown that the temperature sensitivity of the TPP resonance frequency can be as high as $0.0264~\mathrm{THz/K}$ at room temperature, leading to a figure of merit over 150. By calculating the LDOS near the chain, we further demonstrate that the temperature sensitivity of TPPs is experimentally detectable via near-field probing techniques. This sensitivity is robust since TPPs are highly protected modes immune to disorder and can achieve a strong confinement of radiation. We envisage these TPPs can be utilized as promising candidates for robust and enhanced temperature sensing.
description: 6 pages, 4 figures. comments are welcome
Demographic consequences of invasion by a native, controphic competitor to an insular bird population
Creators: name: Johnson, Kate Marie
name: Germain, Ryan Ross
name: Tarwarter, C. E.
name: Arcese, Peter
Publisher: name: The University of British Columbia
Year: 2019

description: Species invasions and range shifts can lead to novel competitive interactions between historically resident and colonizing species, but the demographic consequences of such interactions remain controversial. We present results from field experiments and 45 yrs of demographic monitoring to test the hypothesis that the colonization of Mandarte Is., BC, Canada, by fox sparrows (Passerella iliaca) caused the long-term decline of the song sparrow (Melospiza melodia) population resident there. Several lines of evidence indicate that competition with fox sparrows for winter food reduced over-winter survival in juvenile song sparrows, enforcing population decline despite an increase in annual reproductive rate in song sparrows over the same period. In contrast, we found no evidence of interspecific competition for resources during the breeding season. Our results indicate that in the absence of a sufficient ecological or evolutionary shift in niche dimension, range expansions by dominant competitors have the potential to cause the extirpation of historically resident species when competitive interactions between them are strong and resources not equitably partitioned.
Determining the current polarization in Al/Co nanostructured point contacts
Creators: name: Perez-Willard, F.
name: Cuevas, J. C.
name: Suergers, C.
name: Pfundstein, P.
name: Kopu, J.
name: Eschrig, M.
name: Loehneysen, H. v.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a study of the Andreev reflections in superconductor/ferromagnet nanostructured point contacts. The experimental data are analyzed in the frame of a model with two spin-dependent transmission coefficients for the majority and minority charge carriers in the ferromagnet. This model consistently describes the whole set of conductance measurements as a function of voltage, temperature, and magnetic field. The ensemble of our results shows that the degree of spin polarization of the current can be unambiguously determined using Andreev physics.
description: 4 pages, RevTeX4, 3 figures, 1 table
ADMINISTERING AN EFFECTIVE AGRICULTURAL ENERGY RESEARCH PROGRAM
Creators: name: McCracken, Ralph J.
name: McCracken, Ralph J.
Publisher: name: Unknown
Year: 1977
Subjects: Resource /Energy Economics and Policy

description: Mr. Gavett presented well the differences perceived between ERDA and USDA approaches to energy research. As he indicated, ERDA concentrates on rapid development and early commercial adoption of research derived technology. USDA and its State agricultural experiment station (SAES) cooperators spend more time researching a topic and solving most technical problems; only then is a project released for information, technology transfer, and commercial adoption.
title: Diagnosis and embolization of Pulmonary AVM : single center experience.
Creators: name: Borzelli, Antonio
Publisher: name: European Congress of Radiology
Year: 2021
Subjects: subject: Arteriovenous malformations
subject: Embolisation
subject: Catheters
subject: Arterial access
subject: CT-Angiography
subject: CT
subject: Interventional vascular
subject: Emergency
subject: Arteries / Aorta

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To determine the role, efficacy and safety of transcatheter endovascular embolization in patients with pulmonary arterio venous malformations and to make a comparison between different embolic agents that can be employed to execute the...
title: Pancreatic Cancer: the Role of MD-CT-guided Percutaneous Celiac Plexus Neurolysis in Drug Uncontrolled Pain
Creators: name: Perissi, Sara
Publisher: name: European Congress of Radiology
Year: 2021
Subjects: subject: Neoplasia
subject: Multidisciplinary cancer care
subject: Ablation procedures
subject: CT
subject: Interventional non-vascular

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: The purpose of this presentation is to illustrate Computed Tomography (CT) guided percutaneous neurolysis of celiac plexus in advanced pancreatic tumours patients unresponsive to conventional analgesic...
TeV Gamma-Ray Observations of the Galactic Center
Creators: name: Kosack, K.
name: Collaboration, the VERITAS
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report a possible detection of TeV gamma-rays from the Galactic Center by the Whipple 10m gamma-ray telescope. Twenty-six hours of data were taken over an extended period from 1995 through 2003 resulting in a total significance of 3.7 standard deviations. The measured excess corresponds to an integral flux of \Flux above an energy of $2.8 \mathrm{TeV}$, roughly 40% of the flux from the Crab Nebula at this energy. The 95% confidence region has an angular extent of about 15 arcmin and includes the position of Sgr A*. The detection is consistent with a point source and shows no evidence for variability.
EPR spectra and magnetization of XY-type rare-earth ions in pyrochlores Y$_2$Ti$_2$O$_7$:RE$^{3+}$ (RE=Yb, Er)
Creators: name: Batulin, R. G.
name: Cherosov, M. A.
name: Gilmutdinov, I. F.
name: Kiiamov, A. G.
name: Klekovkina, V. V.
name: Malkin, B. Z.
name: Rodionov, A. A.
name: Yusupov, R. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The results of studies of Y$_{2}$Ti$_2$O$_7$ single crystals doped with Er$^{3+}$ and Yb$^{3+}$ ions by means of electron paramagnetic resonance (EPR) and dc-magnetometry are reported. EPR signals of the trigonal centers with the characteristic hyperfine structure of Er$^{3+}$ or Yb$^{3+}$ ions were observed. Field dependences of magnetization of single crystals for magnetic fields directed along the crystallographic axes and temperature dependences of magnetic susceptibilities were measured. Spin Hamiltonian parameters ($g$-factors and parameters of the hyperfine interaction) for Er$^{3+}$ and Yb$^{3+}$ ions were obtained from analysis of experimental data. The registered EPR spectra and magnetization curves were successfully reproduced by simulations in framework of the crystal-field approach, in particular, with an account for hybridization of ground 4f$^{13}$ configuration of Yb$^{3+}$ ions with the charge transfer states.
description: 12 pages, 4 figures, 2 tables
Type 0 Strings in a 2-d Black Hole
Creators: name: Giveon, Amit
name: Konechny, Anatoly
name: Pakman, Ari
name: Sever, Amit
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study some aspects of type 0 strings propagating in the two dimensional black hole geometry, corresponding to the exact SL(2)/U(1) SCFT background.
description: 33 pages, harvmac. v2: minor clarification added
El error y el concepto de falseación científica de Popper, en relación con el modelo teórico adaptativo para la adecuación curricular
Creators: name: Rodas, Jhon Jairo Mosquera
Publisher: name: figshare
Year: 2021
Subjects: Education

description:
El presente estudio plantea una descripción general sobre, el error y el concepto de falseación científica de Popper, en relación con el modelo teórico adaptativo para la adecuación curricular, planteando en primera instancia a la necesidad de claridad sobre la educación basada en la certeza y la posibilidad del error como fuente de conocimiento, aspecto este que ha sido dejado en un rincón por la pedagogía moderna la cual se sigue centrando en la noción de perfección o certeza deductiva.
THE IMPACT OF IMPORTS OF MANUFACTURED MILK PRODUCTS ON THE U.S. DAIRY INDUSTRY
Creators: name: Novakovic, Andrew M.
name: Thompson, Robert L.
name: Novakovic, Andrew M.
name: Thompson, Robert L.
Publisher: name: Unknown
Year: 1977
Subjects: Livestock Production/Industries

description: The time paths of adjustment of consumption, production, and price of specific dairy products and raw milk are estimated under three alternative levels of manufactured product imports. Much larger than historically "normal" import levels are required to bring about a substantial impact upon the dairy industry in the longer run.
Six Major Turning Points in the Life of F.F. Bosworth: Important factors in his work as a healing evangelist
Creators: name: Barnes, Roscoe
Publisher: name: figshare
Year: 2020
Subjects: subject: 210304 Biography
subject: FOS: History and archaeology
subject: 220401 Christian Studies (incl. Biblical Studies and Church History)
subject: FOS: Philosophy, ethics and religion
subject: 220402 Comparative Religious Studies
subject: History
subject: 210399 Historical Studies not elsewhere classified
subject: 220499 Religion and Religious Studies not elsewhere classified
subject: 220405 Religion and Society
subject: Religious Studies

description: This snippet of research highlights the turning points -- the critical moments and experiences -- that contributed to Bosworth's development as a famous healing evangelist. It features his crises, controversies, milestones, and epiphanies on divine healing and overseas missions.
These turning points in the life of Bosworth are reminders that growth or success in ministry is not necessarily based on an easy path or a life that is free of difficulties. Instead, success often comes with a price. Sometimes it begins with a crisis and it may lead to an understanding or insight that would not have occurred without the crisis experience.
#FFBosworth #BosworthMatters
Incongruent Performance Criteria For Small Farm Economic Development
Creators: name: Andrew, C.O.
name: Andrew, C.O.
Publisher: name: Unknown
Year: 1977
Subjects: Farm Management

description: This paper discusses some of the incongruent performance criteria that surround the process of economic development for small farmers. Performance criteria diverge because of varied interests expressed by institutions and groups involved with assistance to small farmers. Four institutional levels are considered: the government, the industry, the firm, and the research and technical assistance organization. While the opportunities and functions of these institutional levels vary among countries, the conflicts, difficulties and opportunities associated with small farm development have similar origins in the more developed and less developed countries.
A modern guide to quantitative spectroscopy of massive OB stars
Creators: name: Simón-Díaz, S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Quantitative spectroscopy is a powerful technique from which we can extract information about the physical properties and surface chemical composition of stars. In this chapter, I guide the reader through the main ideas required to get initiated in the learning process to become an expert in the application of state-of-the-art quantitative spectroscopic techniques to the study of massive OB stars. NB: This chapter is intended to serve to young students as a first approach to a field which has attracted my attention during the last 20 years. I should note that, despite its importance, at present, the number of real experts in the field around the world is limited to less than 50 people, and about one third of them are close to retirement. Hence, I consider that this is a good moment to write a summary text on the subject to serve as guideline for the next generations of students interested in joining the massive star crew. If you are one of them, please, use this chapter as a first working notebook. Do not stop here. Dig also, for further details, into the literature I quote along the text. And, once there, dig even deeper to find all the original sources explaining in more detail the physical and technical concepts that are presently incorporated into our modern (almost) automatized tools.
description: Accepted for publication in the book "Reviews in Frontiers of Modern Astrophysics: From Space Debris to Cosmology" (eds Kabath, Jones and Skarka; publisher Springer Nature) funded by the European Union Erasmus+ Strategic Partnership grant "Per Aspera Ad Astra Simul" 2017-1-CZ01-KA203-035562
A "SCALE" APPROACH TO COMMUNITY DEVELOPMENT
Creators: name: Simpkins, Norman O.
name: Simpkins, Norman O.
Publisher: name: Unknown
Year: 1977
Subjects: Public Economics

description: When one looks into the literature on community development one finds a plethora of definitions. For example, Biddle and Biddle list seventeen different definitions, some of which seem to contradict others. Community development is also frequently treated as virtually synonymous with such terms as modernization, urbanization, industrialization, etc . As to theories of development, each social science discipline has tended to go its own way with the result that there is no over~all theory, only partial theories. Anthropologists tend to stress anthropological variables (Goodenough); economists stress mostly economic variables (Rostow); political scientists stress primarily political variables (Apter); sociologists stress sociological variables (Loomis); and psychologists focus on psychological variables (McClelland).
The Correlated Kondo-lattice Model
Creators: name: Kienert, J.
name: Santos, C.
name: Nolting, W.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the ferromagnetic Kondo-lattice model (FKLM) with a correlated conduction band. A moment conserving approach is proposed to determine the electronic self-energy. Mapping the interaction onto an effective Heisenberg model we calculate the ordering of the localized spin system self-consistently. Quasiparticle densities of states (QDOS) and the Curie temperature are calculated. The band interaction leads to an upper Hubbard peak and modifies the magnetic stability of the FKLM.
description: 4 pages, 4 figures
Universal Thermodynamics of Degenerate Quantum Gases in the Unitarity Limit
Creators: name: Ho, Tin-Lun
Publisher: name: arXiv
Year: 2003
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We perform a systematic study of the thermodynamics of quantum gases in the unitarity limit. Our study makes use of a "Universality Hypothesis" for the relevant energy scales of a many-body system at unitarity. This Hypothesis is supported by recent experiments and can be proven in Boltzmann regime. It implies a universal form for the grand potential which is characterized by only a few universal numbers in degenerate limit. This universal form provides a simple way to determine the density profile of a trapped fermion superfluid as well as the second sound velocity of a homogeneous superfluid at unitarity.
description: 4 pages text, 1 figure on a separate page
Viable Supersymmetry and Leptogenesis with Anomaly Mediation
Creators: name: Ibe, Masahiro
name: Kitano, Ryuichiro
name: Murayama, Hitoshi
name: Yanagida, Tsutomu
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The seesaw mechanism that explains the small neutrino masses comes naturally with supersymmetric (SUSY) grand unification and leptogenesis. However, the framework suffers from the SUSY flavor and CP problems, and has a severe cosmological gravitino problem. We propose anomaly mediation as a simple solution to all these problems, which is viable once supplemented by the D-terms for U(1)_Y and U(1)_{B-L}. Even though the right-handed neutrino mass explicitly breaks U(1)_{B-L} and hence reintroduces the flavor problem, we show that it lacks the logarithmic enhancement and poses no threat to the framework. The thermal leptogenesis is then made easily consistent with the gravitino constraint.
description: 5 pages, one figure, uses Revtex4; Discussion on the upper bound on the LSP mass added. The version published in PRD
Kinematics of the M87 jet in the collimation zone: gradual acceleration and velocity stratification
Creators: name: Park, Jongho
name: Hada, Kazuhiro
name: Kino, Motoki
name: Nakamura, Masanori
name: Hodgson, Jeffrey
name: Ro, Hyunwook
name: Cui, Yuzhu
name: Asada, Keiichi
name: Algaba, Juan-Carlos
name: Sawada-Satoh, Satoko
name: Lee, Sang-Sung
name: Cho, Ilje
name: Shen, Zhiqiang
name: Jiang, Wu
name: Trippe, Sascha
name: Niinuma, Kotaro
name: Sohn, Bong Won
name: Jung, Taehyun
name: Zhao, Guang-Yao
name: Wajima, Kiyoaki
name: Tazaki, Fumie
name: Honma, Mareki
name: An, Tao
name: Akiyama, Kazunori
name: Byun, Do-Young
name: Kim, Jongsoo
name: Zhang, Yingkang
name: Cheng, Xiaopeng
name: Kobayashi, Hideyuki
name: Shibata, Katsunori M.
name: Lee, Jee Won
name: Roh, Duk-Gyoo
name: Oh, Se-Jin
name: Yeom, Jae-Hwan
name: Jung, Dong-Kyu
name: Oh, Chungsik
name: Kim, Hyo-Ryoung
name: Hwang, Ju-Yeon
name: Hagiwara, Yoshiaki
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study the kinematics of the M87 jet using the first year data of the KVN and VERA Array (KaVA) large program, which has densely monitored the jet at 22 and 43 GHz since 2016. We find that the apparent jet speeds generally increase from $\approx0.3c$ at $\approx0.5$ mas from the jet base to $\approx2.7c$ at $\approx20$ mas, indicating that the jet is accelerated from subluminal to superluminal speeds on these scales. We perform a complementary jet kinematic analysis by using archival Very Long Baseline Array monitoring data observed in $2005-2009$ at 1.7 GHz and find that the jet is moving at relativistic speeds up to $\approx5.8c$ at distances of $200-410$ mas. We combine the two kinematic results and find that the jet is gradually accelerated over a broad distance range that coincides with the jet collimation zone, implying that conversion of Poynting flux to kinetic energy flux takes place. If the jet emission consists of a single streamline, the observed trend of jet acceleration ($Γ\propto z^{0.16\pm0.01}$) is relatively slow compared to models of a highly magnetized jet. This indicates that Poynting flux conversion through the differential collimation of poloidal magnetic fields may be less efficient than expected. However, we find a non-negligible dispersion in the observed speeds for a given jet distance, making it difficult to describe the jet velocity field with a single power-law acceleration function. We discuss the possibility that the jet emission consists of multiple streamlines following different acceleration profiles, resulting in jet velocity stratification.
description: Accepted for publication in ApJ; This is a new version after updating Figure 11 in the manuscript
title: Pelvic Congestion Syndrome: Imaging, Classification, Planning and Endovascular Treatment Technique.
Creators: name: Perissi, Sara
Publisher: name: European Congress of Radiology
Year: 2021
Subjects: subject: Varices
subject: Embolisation
subject: MR
subject: Fluoroscopy
subject: Interventional vascular
subject: Genital / Reproductive system female

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: The purpose of this presentation is to illustrate anatomical and pathophysiological features of Pelvic Congestion Syndrome (PCS) and the indications for an endovascular...
Vicious walk with a wall, noncolliding meanders, and chiral and Bogoliubov-deGennes random matrices
Creators: name: Katori, Makoto
name: Tanemura, Hideki
name: Nagao, Taro
name: Komatsuda, Naoaki
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Spatially and temporally inhomogeneous evolution of one-dimensional vicious walkers with wall restriction is studied. We show that its continuum version is equivalent with a noncolliding system of stochastic processes called Brownian meanders. Here the Brownian meander is a temporally inhomogeneous process introduced by Yor as a transform of the Bessel process that is a motion of radial coordinate of the three-dimensional Brownian motion represented in the spherical coordinates. It is proved that the spatial distribution of vicious walkers with a wall at the origin can be described by the eigenvalue-statistics of Gaussian ensembles of Bogoliubov-deGennes Hamiltonians of the mean-field theory of superconductivity, which have the particle-hole symmetry. We report that the time evolution of the present stochastic process is fully characterized by the change of symmetry classes from the type $C$ to the type $C$I in the nonstandard classes of random matrix theory of Altland and Zirnbauer. The relation between the non-colliding systems of the generalized meanders of Yor, which are associated with the even-dimensional Bessel processes, and the chiral random matrix theory is also clarified.
description: REVTeX4, 16 pages, 4 figures. v2: some additions and corrections
title: Abdominal tuberculosis : Imaging finding
Creators: name: Fahl, Amine
Publisher: name: European Congress of Radiology
Year: 2021
Subjects: subject: Infection
subject: Diagnostic procedure
subject: Ultrasound
subject: CT
subject: Abdomen

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: ■ Identify imaging features that are suggestive of abdominal TB.■ Describe the pathophysiology of abdominal TB.■ Compare the imaging features of abdominal TB to those of other infectious and noninfectious...
Eclectic Flavor Groups
Creators: name: Nilles, Hans Peter
name: Ramos-Sanchez, Saul
name: Vaudrevange, Patrick K. S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The simultaneous study of top-down and bottom-up approaches to modular flavor symmetry leads necessarily to the concept of eclectic flavor groups. These are nontrivial products of modular and traditional flavor symmetries that exhibit the phenomenon of local flavor enhancement in moduli space. We develop methods to determine the eclectic flavor groups that can be consistently associated with a given traditional flavor symmetry. Applying these methods to a large family of prominent traditional flavor symmetries, we try to identify potential candidates for realistic eclectic flavor groups and show that they are relatively rare. Model building with finite modular flavor symmetries thus appears to be much more restrictive than previously thought.
description: 23 pages, 2 tables; v2: interpretation of outer automorphisms clarified
Antiviral Activity of Bacterial Extracellular Ribonuclease Against Single-, Double-Stranded RNA and DNA Containing Viruses in Cell Cultures
Creators: name: Mahmud, Raihan Shah
Publisher: name: figshare
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences

description: Antiviral Activity of Bacterial Extracellular Ribonuclease Against Single-, Double-Stranded RNA and DNA Containing Viruses in Cell Cultures (Article)
Raihan Shah Mahmud, Marina Efimova, Ahmed Mostafa, Vera Ulyanova & Olga Ilinskaya
BioNanoScience volume 6, pages561–563 (2016)DOI 10.1007/s12668-016-0279-9
https://link.springer.com/article/10.1007/s12668-016-0279-9
Nonlinear quantum gravity on the constant mean curvature foliation
Creators: name: Wang, Charles H-T
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A new approach to quantum gravity is presented based on a nonlinear quantization scheme for canonical field theories with an implicitly defined Hamiltonian. The constant mean curvature foliation is employed to eliminate the momentum constraints in canonical general relativity. It is, however, argued that the Hamiltonian constraint may be advantageously retained in the reduced classical system to be quantized. This permits the Hamiltonian constraint equation to be consistently turned into an expectation value equation on quantization that describes the scale factor on each spatial hypersurface characterized by a constant mean exterior curvature. This expectation value equation augments the dynamical quantum evolution of the unconstrained conformal three-geometry with a transverse traceless momentum tensor density. The resulting quantum theory is inherently nonlinear. Nonetheless, it is unitary and free from a nonlocal and implicit description of the Hamiltonian operator. Finally, by imposing additional homogeneity symmetries, a broad class of Bianchi cosmological models are analyzed as nonlinear quantum minisuperspaces in the context of the proposed theory.
description: 14 pages. Classical and Quantum Gravity (To appear)