cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Bloch-Wilson Hamiltonian and a Generalization of the Gell-Mann-Low Theorem
Creators: name: Weber, Axel
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The effective Hamiltonian introduced many years ago by Bloch and generalized later by Wilson, appears to be the ideal starting point for Hamiltonian perturbation theory in quantum field theory. The present contribution derives the Bloch-Wilson Hamiltonian from a generalization of the Gell-Mann-Low theorem, thereby enabling a diagrammatic analysis of Hamiltonian perturbation theory in this approach.
description: 5 pages, LaTeX, uses aipproc.sty. Talk delivered at the VII Mexican Workshop on Particles and Fields, Merida, Yucatan, November 10-17, 1999; to be published in the proceedings
Additional file 1 of Herbicidal secondary metabolites from Bacillus velezensis JTB8-2 against Orobanche aegyptiaca
Creators: name: He, Wei
name: Li, Yan
name: Luo, Wenfang
name: Zhou, Junhui
name: Zhao, Sifeng
name: Xu, Jianjun
Publisher: name: figshare
Year: 2022
Subjects: subject: Plant Biology
subject: FOS: Biological sciences

description: Additional file 1: Figure S1. (+)-ESI-MS spectrum of compound 1, Figure S2. (+)-ESI-MS spectrum of compound 2, Figure S3. (+)-ESI-MS spectrum of compound 3, Figure S4. (+)-ESI-MS spectrum of compound 4
A superconducting absolute spin valve
Creators: name: De Simoni, G.
name: Strambini, E.
name: Moodera, J. S.
name: Bergeret, F. S.
name: Giazotto, F.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A superconductor with a spin-split excitation spectrum behaves as an ideal ferromagnetic spin-injector in a tunneling junction. It was theoretical predicted that the combination of two such spin-split superconductors with independently tunable magnetizations, may be used as an ideal $absolute$ spin-valve. Here we report on the first switchable superconducting spin-valve based on two EuS/Al bilayers coupled through an aluminum oxide tunnel barrier. The spin-valve shows a relative resistance change between the parallel and antiparallel configuration of the EuS layers up to 900% that demonstrates a highly spin-polarized currents through the junction. Our device may be pivotal for realization of thermoelectric radiation detectors, logical element for a memory cell in cryogenics superconductor-based computers and superconducting spintronics in general.
description: 6 pages, 4 color figures, 1 table
The massive star population of the Virgo Cluster galaxy NGC 4535
Creators: name: Spetsieri, Z. T.
name: Bonanos, A. Z.
name: Kourniotis, M.
name: Yang, M.
name: Lianou, S.
name: Bellas-Velidis, I.
name: Gavras, P.
name: Hatzidimitriou, D.
name: Kopsacheili, M.
name: Moretti, M. I.
name: Nota, A.
name: Pouliasis, E.
name: Sokolovsky, K. V.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We analyzed the massive star population of the Virgo Cluster galaxy NGC 4535 using archival Hubble Space Telescope Wide Field Planetary Camera 2 images in filters F555W and F814W, equivalent to Johnson V and Kron-Cousins I. We performed high precision point spread function fitting photometry of 24353 sources including 3762 candidate blue supergiants, 841 candidate yellow supergiants and 370 candidate red supergiants. We estimated the ratio of blue to red supergiants as a decreasing function of galactocentric radius. Using Modules for Experiments in Stellar Astrophysics isochrones at solar metallicity, we defined the luminosity function and estimated the star formation history of the galaxy over the last 60 Myrs. We conducted a variability search in the V and I filters using three variability indexes: the median absolute deviation, the interquartile range and the inverse von-Neumann ratio. This analysis yielded 120 new variable candidates with absolute magnitudes ranging from M$_{V}$ = $-$4 to $-$11 mag. We used the MESA evolutionary tracks at solar metallicity, to classify the variables based on their absolute magnitude and their position on the color-magnitude diagram. Among the new candidate variable sources are eight candidate variable red supergiants, three candidate variable yellow supergiants and one candidate luminous blue variable, which we suggest for follow-up observations.
description: Accepted by A&A, 7 pages, 7 Tables, 53 figures
Tree Ring Specimens / Original Timbers in Casa Grande Ruins
Creators: name: Wilcox, David
name: Howard, Richard
name: Vivian, Gordon
name: A. H. Schroeder
name: Houston, Aubrey F.
Year: 1964
Subjects: subject: Classic Period
valueUri: https://core.tdar.org/browse/temporal-keyword/125/classic-period
subject: Hohokam
valueUri: https://core.tdar.org/browse/culture-keyword/21/hohokam
subject: Casa Grande Ruins National Monument
valueUri: https://core.tdar.org/browse/site-name/1435/casa-grande-ruins-national-monument
subject: Ancient Structure
valueUri: https://core.tdar.org/browse/site-type/335/ancient-structure
subject: Trash Midden
valueUri: https://core.tdar.org/browse/site-type/351/trash-midden
subject: Domestic Structures
valueUri: https://core.tdar.org/browse/site-type/256/domestic-structures
subject: Historic Structure
valueUri: https://core.tdar.org/browse/site-type/336/historic-structure
subject: Agricultural or Herding
valueUri: https://core.tdar.org/browse/site-type/273/agricultural-or-herding
subject: Ball Court
valueUri: https://core.tdar.org/browse/site-type/310/ball-court
subject: Plaza
valueUri: https://core.tdar.org/browse/site-type/331/plaza
subject: Settlements
valueUri: https://core.tdar.org/browse/site-type/252/settlements
subject: Ceramic
valueUri: https://core.tdar.org/browse/material-type/1/ceramic
subject: Environment Research
valueUri: https://core.tdar.org/browse/investigation-type/13/environment-research
subject: Historic Background Research
valueUri: https://core.tdar.org/browse/investigation-type/18/historic-background-research
subject: Site Stewardship Monitoring
valueUri: https://core.tdar.org/browse/investigation-type/19/site-stewardship-monitoring
subject: Records Search / Inventory Checking
valueUri: https://core.tdar.org/browse/investigation-type/8/records-search-inventory-checking

description: These documents are a series of memorandums from both 1964 and 1976 regarding wooden timbers found in the Great House at Casa Grande Ruins National Monument. The memos discuss the removal of the timbers and shipment for the purpose of dendrochronology. The condition of the timbers is discussed regarding the possible difficulting in dating them due to burning.
title: Проектирование насосных установок
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2024

description: Учебное пособие содержит необходимые материалы для расчета различных насосных установок при выполнении курсового проекта по дисциплинам «Стационарные машины», «Горные машины и оборудования», «Насосы и компрессоры», для выполнения расчетных, курсовых и выпускных квалификационных работ. Подготовлено в соответствии с требованиями Федерального государственного образовательного стандарта высшего образования. Учебное пособие предназначено для студентов, обучающихся по укрупненной группе специальностей и направлений подготовки высшего образования «Прикладная геология, горное дело, нефтегазовое дело и геодезия». Кроме того, может быть полезно студентам других специальностей очного и заочного обучения при выполнении аналогичных разделов курсового и дипломного проектирования.
Cosmological Gamma-Ray Bursts and Evolution of Galaxies
Creators: name: Totani, Tomonori
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Evolution of the rate density of cosmological gamma-ray bursts (GRBs) is calculated and compared to the BATSE brightness distribution in the context of binary neutron-star mergers as the source of GRBs, taking account of the realistic star formation history in the universe and evolution of compact binary systems. We tried two models of the evolution of cosmic star formation rate (SFR): one is based on recent observations of SFRs at high redshifts, while the other is based on a galaxy evolution model of stellar population synthesis that reproduces the present-day colors of galaxies. It is shown that the binary merger scenario of GRBs naturally results in the comoving rate-density evolution of \propto (1+z)^{2-2.5} up to z ~ 1, that has been suggested independently from the compatibility between the number-brightness distribution and duration-brightness correlation. If the cosmic SFR has its peak at z ~ 1--2 as suggested by recent observations, the effective power-index of GRB photon spectrum, α>~ 1.5$ is favored, that is softer than the recent observational determination of α= 1.1 \pm 0.3. However, high redshift starbursts (z >~ 5) in elliptical galaxies, that have not yet been detected, can alleviate this discrepancy. The redshift of GRB970508 is likely about 2, just below the upper limit that is recently determined, and the absorption system at z = 0.835 seems not to be the site of the GRB.
description: ApJ Lett. in press, very minor change just making clear that the predicted rate-density evolution is in a comoving sense. (Received 1997 May 15; Accepted 1997 July 2)
Search for long-lived particles with displaced vertices in multijet events in proton-proton collisions at $\sqrt{s} =$ 13 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Results are reported from a search for long-lived particles in proton-proton collisions at $\sqrt{s} =$ 13 TeV delivered by the CERN LHC and collected by the CMS experiment. The data sample, which was recorded during 2015 and 2016, corresponds to an integrated luminosity of 38.5 fb$^{-1}$. This search uses benchmark signal models in which long-lived particles are pair-produced and each decays into two or more quarks, leading to a signal with multiple jets and two displaced vertices composed of many tracks. No events with two well-separated high-track-multiplicity vertices are observed. Upper limits are placed on models of $R$-parity violating supersymmetry in which the long-lived particles are neutralinos or gluinos decaying solely into multijet final states or top squarks decaying solely into dijet final states. For neutralino, gluino, or top squark masses between 800 and 2600 GeV and mean proper decay lengths between 1 and 40 mm, the analysis excludes cross sections above 0.3 fb at 95% confidence level. Gluino and top squark masses are excluded below 2200 and 1400 GeV, respectively, for mean proper decay lengths between 0.6 and 80 mm. A method is provided for extending the results to other models with pair-produced long-lived particles.
description: Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/EXO-17-018 (CMS Public Pages)
Phthiracarus subglobosus Berlese
Creators: name: Parry, B. W.
Publisher: name: Zenodo
Year: 1979
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Phthiracaridae
Phthiracarus
Phthiracarus subglobosus

description: Phthiracarus subglobosus Berlese
1923
Vallombrosa, Italy
ISZA, Florence
description: Published as part of Parry, B. W., 1979, A revision of the British species of the genus Phthiracarus Perty 1841 (Cryptostigmata: Euptyctima), pp. 323-363 in Bull. British Mus. nat. Hist., Zool. ser. 35 on page 358
A Stealth CME Bracketed between Slow and Fast Wind Producing Unexpected Geo-effectiveness
Creators: name: He, Wen
name: Liu, Ying D.
name: Hu, Huidong
name: Wang, Rui
name: Zhao, Xiaowei
Publisher: name: arXiv
Year: 2018
Subjects: subject: Space Physics (physics.space-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We investigate how a weak coronal mass ejection (CME) launched on 2016 October 8 without obvious signatures in the low corona produced a relatively intense geomagnetic storm. Remote sensing observations from SDO, STEREO and SOHO and in situ measurements from WIND are employed to track the CME from the Sun to the Earth. Using a graduated cylindrical shell (GCS) model, we estimate the propagation direction and the morphology of the CME near the Sun. CME kinematics are determined from the wide-angle imaging observations of STEREO A and are used to predict the CME arrival time and speed at the Earth. We compare ENLIL MHD simulation results with in situ measurements to illustrate the background solar wind where the CME was propagating. We also apply a Grad--Shafranov technique to reconstruct the flux rope structure from in situ measurements in order to understand the geo-effectiveness associated with the CME magnetic field structure. Key results are obtained concerning how a weak CME can generate a relatively intense geomagnetic storm: (1) there were coronal holes at low latitudes, which could produce high speed streams (HSSs) to interact with the CME in interplanetary space; (2) the CME was bracketed between a slow wind ahead and a HSS behind, which enhanced the southward magnetic field inside the CME and gave rise to the unexpected geomagnetic storm.
description: 8 figures; accepted by ApJ
Phthiracarus tardus Forsslund
Creators: name: Parry, B. W.
Publisher: name: Zenodo
Year: 1979
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Phthiracaridae
Phthiracarus
Phthiracarus tardus
Plantae
Tracheophyta
Magnoliopsida
Ericales
Ericaceae
Vaccinium

description: Phthiracarus tardus Forsslund
1956
Humus under Vaccinium in coniferous forest, Degerfors, Västerbotten, Sweden
NR (Naturhistoriska Riksmuseet), Stockholm & BMNH, London [Paratype]
description: Published as part of Parry, B. W., 1979, A revision of the British species of the genus Phthiracarus Perty 1841 (Cryptostigmata: Euptyctima), pp. 323-363 in Bull. British Mus. nat. Hist., Zool. ser. 35 on page 358
Exclusive Hadronic D Decays to $η'$ or $η$: Addendum on Resonant Final-State Interactions
Creators: name: Cheng, Hai-Yang
name: Tseng, B.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: For hadronic two-body decays of charmed mesons involving $η$ or $η'$, resonance-induced final-state interactions (FSI) that mimic the W-exchange or the W-annihilation topology can play an essential role. In particular, the decays $D^0\to\bar K^0η'$ and $D^+\toπ^+η$, which are largely suppressed in the absence of FSI, are enhanced dramatically by resonant FSI. It is stressed that the effect of resonant FSI is negligible for $ρ^+(η,η')$ final states because of the mismatch of the G parity of $ρ^+(η,η')$ and the J=0, I=1 meson resonance. We argue that a possible gluon-mediated process in which two gluons couple directly to the gluonic component of the $η'$, e.g. the gluonium, rather than to the flavor-singlet $η_0$, can enhance both modes $D_s^+\toρ^+η'$ and $D_s^+\toρ^+η$, especially the former; that is, this new mechanism can account for the unexpectedly large branching ratio of $ρ^+η'$ without suppressing $ρ^+η$.
description: 13 pages
Política de incentivo de la investigación y publicación de producción científica en la Universidad Nacional Mayor de San Marcos - UNMSM (2000 – 2018)
Creators: name: Veria, Elizabeth Huisa
Publisher: name: figshare
Year: 2018
Subjects: subject: 160808 Sociology and Social Studies of Science and Technology
subject: FOS: Sociology

description: Estudio de caso sobre la relación de la política de incentivo a la investigación con la producción científica en la Facultad de Letras y Ciencias Humanas de la Universidad Nacional Mayor de San Marcos (UNMSM), durante el periodo 2000 – 2018.
The SKA as a prebiotic molecule detector
Creators: name: Jimenez-Serra, Izaskun
name: Martin-Pintado, Jesus
name: Insausti, Aran
name: Alonso, Elena R.
name: Cocinero, Emilio J.
name: Bourke, Tyler L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: One of the theories for the origin of life proposes that a significant fraction of prebiotic material could have arrived to Earth from outer space between 4.1 and 3.8 billion years ago. This suggests that those prebiotic compounds could have originated in interstellar space, to be later on incorporated to small Solar-system bodies and planetesimals. The recent discovery of prebiotic molecules such as hydroxylamine and ethanolamine in the interstellar medium, strongly supports this hypothesis. However, some species such as sugars, key for the synthesis of ribonucleotides and for metabolic processes, remain to be discovered in space. The unmatched sensitivity of the Square Kilometer Array (SKA) at centimeter wavelengths will be able to detect even more complex and heavier prebiotic molecules than existing instrumentation. In this contribution, we illustrate the potential of the SKA to detect simple sugars with three and four carbon atoms, using a moderate investment of observing time.
description: 12 pages, 1 figure, 1 table, accepted for Frontiers in Astronomy and Space Sciences, section Astrochemistry
Lived PhD Experiences: Critical Reflections from the Students’ Point of View
Creators: name: Jones, Angele
Publisher: name: Torrens University Australia
Year: 2018
Subjects: subject: 130399 Specialist Studies in Education not elsewhere classified
subject: FOS: Educational sciences

description: There is a growing number of PhD students enrolled in Australian universities and yet there are high attrition rates and a decreasing number of permanent or tenured academic roles. Considerable discourse surrounds the purpose of the PhD (Group of Eight, 2013; McAlpine & Norton, 2006) and much less on the PhD experience from current student perspectives. Most research looks at ‘discrete’ aspects, such as supervision, gender or completion (Seagram, Gould & Pyke, 1998; Carter, Blumenstein, Cook, 2012; Green & Bowden, 2012; Jiranek, 2010). Of the research that focuses on the PhD experience, much is conducted upon completion of PhD study and is reflective—not adequately representing the PhD student, their circumstances or their personal experiences. Furthermore, research during the PhD experience mostly consists of one-off interviews and does not capture the longitudinal experience. This thesis reveals how a diverse cohort of PhD students reported their lived PhD experiences – critical reflections from the students’ point of view. This research did not presume or predetermine a framework. Instead, over a period of three-to-12 months, using a variety of introspective methods, 23 participants reported on their lived experience of being a PhD student. Following an initial thematic analysis, the findings were further analysed using Bandura’s (1986) social cognitive and self-efficacy theories. The findings are presented through an adaptation of Bandura’s (1997) reciprocal determinism theory model: to first, demonstrate from the students’ perspectives the bidirectional effects of the environmental, relational and behavioural dimensions; and second, identify the critical incidents that supported and reduced individual self-efficacy. This thesis presents the adventure park as a conceptual framework for the participants reported experiences of navigating the challenges encountered, which tested participants’ self-efficacy and sense of belonging, towards completion and ontological shift. The thesis concludes by introducing a telescopic lens to view the lived PhD experience as process aimed at developing new knowledge that shifts the individual’s way of being. The originality and contribution to knowledge of the outcomes of this research relate to: • the methodology adopted in this research • the process of the PhD • the outcomes of the PhD. vii The PhD experience is individual, based on the perceptions of PhD research and the expectations the individual brings with them. It is the process of being a PhD student and doing the research. It is not about the thesis or the knowledge they are creating; it is the process.
On the relativity of stream restoration and the need for reproducible research: comment
Creators: name: Murray-Stoker, David
Publisher: name: figshare
Year: 2019
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Limnology
subject: 60202 Community Ecology (excl. Invasive Species Ecology)
subject: 60204 Freshwater Ecology

description: All R code and data have been moved to a separate project. Two folders for the same project were created on accident.
Particle Production in Very High-Energy Cosmic-Ray Emulsion Chamber Events: Usual and Unusual Events
Creators: name: Costa, C. G. S.
name: Halzen, F.
name: Salles, C.
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We show that a simple scaling model of very forward particle production, consistent with accelerator and air shower data, can describe all features of the very high-energy interactions recorded with emulsion chambers. This is somewhat surprising after numerous claims that the same data implied large scaling violations or new dynamics. Interestingly, we cannot describe some of the Centauro events, suggesting that these events are anomalous independently of their well-advertised unusual features such as the absence of neutral secondaries.
description: 10 pages, Revtex 3.0. Four figures (6 postscript files) included. Compressed postscript file with figures available at ftp://phenom.physics.wisc.edu/pub/preprints/1995/madph-95-886.ps.Z or at http://phenom.physics.wisc.edu/pub/preprints/1995/madph-95-886.ps.Z
Hoplophora testudinea Koch
Creators: name: Parry, B. W.
Publisher: name: Zenodo
Year: 1979
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Euphthiracaridae
Hoplophora
Hoplophora testudinea

description: Hoplophora testudinea Koch
1841
Moss on trees, Regensburg area, West Germany
[Type series apparently lost]
description: Published as part of Parry, B. W., 1979, A revision of the British species of the genus Phthiracarus Perty 1841 (Cryptostigmata: Euptyctima), pp. 323-363 in Bull. British Mus. nat. Hist., Zool. ser. 35 on page 358
Wrinkles and creases in the bending, unbending and eversion of soft sectors
Creators: name: Sigaeva, Taisiya
name: Mangan, Robert
name: Vergori, Luigi
name: Destrade, Michel
name: Sudak, Les
Publisher: name: arXiv
Year: 2018
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study what is clearly one of the most common modes of deformation found in nature, science and engineering, namely the large elastic bending of curved structures, as well as its inverse, unbending, which can be brought beyond complete straightening to turn into eversion. We find that the suggested mathematical solution to these problems always exists and is unique when the solid is modelled as a homogeneous, isotropic, incompressible hyperelastic material with a strain-energy satisfying the strong ellipticity condition. We also provide explicit asympto-tic solutions for thin sectors. When the deformations are severe enough, the compressed side of the elastic material may buckle and wrinkles could then develop. We analyse in detail the onset of this instability for the Mooney-Rivlin strain energy, which covers the cases of the neo-Hookean model in exact non-linear elasticity and of third-order elastic materials in weakly non-linear elasticity. In particular the associated theoretical and numerical treatment allows us to predict the number and wavelength of the wrinkles. Guided by experimental observations we finally look at the development of creases, which we simulate through advanced finite element computations. In some cases the linearised analysis allows us to predict correctly the number and the wavelength of the creases, which turn out to occur only a few percent of strain earlier than the wrinkles.
title: ADCO, Grènetier de Cîteaux : comptes (1499-1503) (11 H 1173), f. 00458
Creators: name: de la Côte-d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CBMA/CG21/F.PETOT/2019
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: comptes

description: Grènetier de Cîteaux : comptes (1499-1503), Archives départementales de la Côte-d'Or, (11 H 1173). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Grènetier de Cîteaux : comptes (1499-1503), Archives départementales de la Côte-d'Or, (11 H 1173), f. 00458, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
Mass Generation for an Ultralight Axion
Creators: name: Nomura, Yasunori
name: Watari, T.
name: Yanagida, T.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: If a global chiral symmetry is explicitly broken by anomalies in nonabelian gauge theories, a pseudo Nambu-Goldstone boson (axion) associated with a spontaneous breakdown of such a global symmetry acquires a mass through nonperturbative instanton effects. We calculate the axion mass assuming a supersymmetric SU(2) gauge theory and show that the axion obtains an extremely small mass when the SU(2) gauge symmetry is broken down at very high energy, say at the Planck scale. We identify the axion with a hypothetical ultralight boson field proposed to account for a small but nonzero cosmological constant suggested from recent cosmological observations.
description: 11 pages, Latex
title: Basilius Imperatori Theodosio. Codd. Reg. 1379. 2281 Basilius magno Imperatori Theodosio.
Creators: name: :Unkn
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2022

description: created: -
Off-shell amplitudes for nonoriented closed strings
Creators: name: Cappiello, L.
name: Marotta, R.
name: Pettorino, R.
name: Pezzella, F.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the context of the bosonic closed string theory, by using the operatorial formalism, we give a simple expression of the off-shell amplitude with an arbitrary number of external massless states inserted on the Klein bottle.
description: 12 pages, LaTeX
Antimatter Regions in the Early Universe and Big Bang Nucleosynthesis
Creators: name: Kurki-Suonio, Hannu
name: Sihvola, Elina
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We have studied big bang nucleosynthesis in the presence of regions of antimatter. Depending on the distance scale of the antimatter region, and thus the epoch of their annihilation, the amount of antimatter in the early universe is constrained by the observed abundances. Small regions, which annihilate after weak freezeout but before nucleosynthesis, lead to a reduction in the 4He yield, because of neutron annihilation. Large regions, which annihilate after nucleosynthesis, lead to an increased 3He yield. Deuterium production is also affected but not as much. The three most important production mechanisms of 3He are 1) photodisintegration of 4He by the annihilation radiation, 2) pbar-4He annihilation, and 3) nbar-4He annihilation by "secondary" antineutrons produced in anti-4He annihilation. Although pbar-4He annihilation produces more 3He than the secondary nbar-4He annihilation, the products of the latter survive later annihilation much better, since they are distributed further away from the annihilation zone.
description: 15 pages, 9 figures. Minor changes to match the PRD version
The influence of tensor force on the microscopic heavy-ion interaction potential
Creators: name: Guo, Lu
name: Godbey, K.
name: Umar, A. S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Background: The tensor interaction is known to play an important role in the nuclear structure studies of exotic nuclei. However, most microscopic studies of low-energy nuclear reactions neglect the tensor force, resulting in a lack of knowledge concerning the effect of the tensor force on HIC...... Purpose: The theoretical study of the influence of the tensor force on heavy-ion interaction potentials is required to further our understanding of the microscopic mechanisms entailed in fusion dynamics. Method: The full Skyrme tensor force is implemented into the static Hartree-Fock and dynamic density-constrained time-dependent Hartree-Fock (DC-TDHF) theory to calculate both static (frozen density) and dynamic microscopic interaction potentials for reactions involving exotic and stable nuclei. Results: The static potentials are found to be systematically higher than the dynamical results, which are attributed to the microscopic dynamical effects included in TDHF. We also show that the dynamical potential barriers vary more significantly by the inclusion of tensor force than the static barriers. The influence of isoscalar and isovector tensor terms is also investigated with the TIJ set of forces. For light systems, the tensor force is found to have an imperceptible effect on the nucleus-nucleus potential. However, for medium and heavy spin-unsaturated reactions, the potentials may change from a fraction of an MeV to almost 2 MeV by the inclusion of tensor force, indicating a strong impact of the tensor force on sub-barrier fusion. Conclusions: The tensor force could indeed play a large role in the fusion of nuclei, with spin-unsaturated systems seeing a systematic increase in ion-ion barrier height and width. This fusion hindrance is partly due to static, ground state effects from the inclusion of the tensor force, though additional hindrance appears when studying nuclear dynamics.
description: accepted for publication in Phys. Rev. C
Phthiracarus torosus Willmann
Creators: name: Parry, B. W.
Publisher: name: Zenodo
Year: 1979
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Phthiracaridae
Phthiracarus
Phthiracarus torosus

description: Phthiracarus torosus Willmann
1939
Leaves, Levado do Inferno, Madeira
[Type series apparently lost]
description: Published as part of Parry, B. W., 1979, A revision of the British species of the genus Phthiracarus Perty 1841 (Cryptostigmata: Euptyctima), pp. 323-363 in Bull. British Mus. nat. Hist., Zool. ser. 35 on page 358
On estimating the atomic hydrogen column density from the H I 21 cm emission spectra
Creators: name: Saha, Preetha
name: Roy, Nirupam
name: Bhattacharya, Mukul
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The 21 cm hyperfine transition of the atomic hydrogen (HI) in ground state is a powerful probe of the neutral gas content of the universe. This radio frequency transition has been used routinely for decades to observe, both in emission and absorption, HI in the Galactic interstellar medium as well as in extragalactic sources. In general, however, it is not trivial to derive the physically relevant parameters like temperature, density or column density from these observations. Here, we have considered the issue of column density estimation from the HI 21 cm emission spectrum for sightlines with a non-negligible optical depth and a mix of gas at different temperatures. The complicated radiative transfer and a lack of knowledge about the relative position of gas clouds along the sightline often make it impossible to uniquely separate the components, and hinders reliable estimation of column densities in such cases. Based on the observed correlation between the 21 cm brightness temperature and optical depth, we propose a method to get an unbiased estimate of the HI column density using only the 21 cm emission spectrum. This formalism is further used for a large sample to study the spin temperature of the neutral interstellar medium.
description: 5 pages, 5 figures. Accepted for publication in MNRAS Letters. The definitive version will be available at https://academic.oup.com/mnrasl/
Predictions of gamma-ray emission from classical novae and their detectability by CGRO
Creators: name: Hernanz, M.
name: Gomez-Gomar, J.
name: Jose, J.
name: Isern, J.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: An implicit hydrodynamic code following the explosion of classical novae, from the accretion phase up to the final ejection of the envelope, has been coupled to a MonteCarlo code able to simulate their gamma-ray emission. Carbon-oxygen (CO) and oxygen-neon (ONe) novae have been studied and their gamma-ray spectra have been obtained, as well as the gamma-ray light curves for the important lines (e$^{-}$--e$^{+}$ annihilation line at 511 keV, $^{7}$Be decay-line at 478 keV and $^{22}$Na decay-line at 1275 keV). The detectability of the emission by CGRO instruments has been analyzed. It is worth noticing that the $γ$-ray signature of a CO nova is different from that of an ONe one. In the CO case, the 478 keV line is very important, but lasts only for $\sim$2 months. In the ONe case, the 1275 keV line is the dominant one, lasting for $\sim$ 4 years. In both cases, the 511 keV line is the most intense line at the beginning, but its short duration ($\sim$ 2 days) makes it very difficult to be detected. It is shown that the negative results from the observations made by COMPTEL up to now are consistent with the theoretical predictions. Predictions of the future detectability by the INTEGRAL mission are also made.
description: 5 pages, 2 figures, Latex (aipproc.sty), to appear in proceedings of the 4th COMPTON Symposium, held in Williamsburg, VA
Dilute Instanton Gas of an O(3) Skyrme Model
Creators: name: Mueller-Kirsten, H. J. W.
name: Tamarian, S. -N.
name: Tchrakian, D. H.
name: Zimmerschied, F.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The pure-Skyrme limit of a scale-breaking Skyrmed O(3) sigma model in 1+1 dimensions is employed to study the effect of the Skyrme term on the semiclassical analysis of a field theory with instantons. The instantons of this model are self-dual and can be evaluated explicitly. They are also localised to an absolute scale, and their fluctuation action can be reduced to a scalar subsystem. This permits the explicit calculation of the fluctuation determinant and the shift in vacuum energy due to instantons. The model also illustrates the semiclassical quantisation of a Skyrmed field theory.
description: 17 pages, LaTeX
Execution Technique Ontology
Creators: name: Liuzzo, Pietro Maria
Publisher: name: Universität Hamburg
Year: 2019

description: Ontology based on Evangelisti, Silvia. 2017. ‘Scrittura Epigrafica, Alcune Riflessioni’. In COLONIE E MUNICIPI NELL’ERA DIGITALE. DOCUMENTAZIONE EPIGRAFICA PER LA CONOSCENZA DELLE CITTÀ ANTICHE ATTI Del Convegno Di Studi (Macerata, 10-12 Dicembre 2015), edited by Simona Antolini, Silvia Maria Marengo, and Gianfranco Paci, 163–78. Tored.
Phthiracarus tubulus Hammer
Creators: name: Parry, B. W.
Publisher: name: Zenodo
Year: 1979
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Phthiracaridae
Phthiracarus
Phthiracarus tubulus
Plantae
Tracheophyta
Liliopsida
Poales
Cyperaceae
Cyperus

description: Phthiracarus tubulus Hammer
(= lapsus calami for Hoplophthiracarus tubulus)
1972
Cyperus litter near coast, Tahiti
UZM, Copenhagen
description: Published as part of Parry, B. W., 1979, A revision of the British species of the genus Phthiracarus Perty 1841 (Cryptostigmata: Euptyctima), pp. 323-363 in Bull. British Mus. nat. Hist., Zool. ser. 35 on page 358
Finite-frequency noise of interacting single-electron emitters: spectroscopy with higher noise harmonics
Creators: name: Dittmann, Niklas
name: Splettstoesser, Janine
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We derive the symmetrized current-noise spectrum of a quantum dot, which is weakly tunnel-coupled to an electron reservoir and driven by a slow time-dependent gate voltage. This setup can be operated as an on-demand emitter of single electrons into a mesoscopic conductor. By extending a real-time diagrammatic technique which is perturbative in the tunnel coupling, we obtain the time-resolved finite-frequency noise as well as its decomposition into noise harmonics in the presence of both strong Coulomb interaction and slow time-dependent driving. We investigate the noise over a large range of frequencies and point out where the interplay of Coulomb interaction and driving leads to unique signatures in finite-frequency noise spectra, in particular in the first harmonic. Besides that, we employ the first noise harmonic as a spectroscopic tool to access individual fluctuation processes. We discuss how the inverse noise frequency sets a time scale for fluctuations, which competes with time scales of the quantum-dot relaxation dynamics as well as the driving.
description: 25 pages, 9 figures
Mixing of the $f_0$ and $a_0$ scalar mesons in threshold photoproduction
Creators: name: Kerbikov, Boris
name: Tabakin, Frank
Publisher: name: arXiv
Year: 2000
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We examine the photoproduction of the light scalar mesons $f_0$-$a_0 (980)$ with emphasis on isospin-violating $f_0$ and $a_0$ mixing due to the mass difference between neutral and charged kaons. General forms for the invariant amplitude for scalar meson photoproduction are derived, which yield expressions for the invariant mass distribution of the final meson pairs. A final state interaction form factor is obtained which incorporates $f_0$ and $a_0$ mesons, $K\bar K$ threshold effects, and $f_0-a_0$ mixing. This form factor is applied to predict the effective mass distribution of the $ππ$ and $K\bar K$ pairs in the vicinity of the $K\bar K$ threshold. An estimate of the role of isospin mixing near threshold is provided. The potential role of polarized photons and protons is also discussed.
description: 20 pages, 5 figures
Phthiracarus undatus Oudemans
Creators: name: Parry, B. W.
Publisher: name: Zenodo
Year: 1979
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Phthiracaridae
Phthiracarus
Phthiracarus undatus

description: Phthiracarus undatus Oudemans
(regarded as nomen dubium)
1915
Paris area, France
[Type series apparently lost]
description: Published as part of Parry, B. W., 1979, A revision of the British species of the genus Phthiracarus Perty 1841 (Cryptostigmata: Euptyctima), pp. 323-363 in Bull. British Mus. nat. Hist., Zool. ser. 35 on page 358
CBR Anisotropy and the Running of the Scalar Spectral Index
Creators: name: Kosowsky, Arthur
name: Turner, Michael S.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Accurate ($\lesssim 1\% $) predictions for the anisotropy of the Cosmic Background Radiation (CBR) are essential for using future high-resolution ($\lesssim 1^\circ$) CBR maps to test cosmological models. In many inflationary models the variation (``running'') of the spectral index of the spectrum of density perturbations is a significant effect and leads to changes of around 1\% to 10\% in the CBR power spectrum. We propose a general method for taking running into account which uses the derivative of the spectral index ($dn/d\ln k$). Conversely, high-resolution CBR maps may be able to determine $dn/d\ln k$, giving important information about the inflationary potential.
description: Discussion of calculation clarified; error corrected which reduces estimated effect for chaotic inflation
Two-field axion inflation and the swampland constraint in the flux-scaling scenario
Creators: name: Damian, Cesar
name: Loaiza-Brito, Oscar
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Based on the flux-scaling scenario we study a model consisting on Type IIB string theory compactified on a Calabi-Yau manifold with a frozen complex structure in the presence of generic fluxes. The model contains (meta)stable Minkowski and de Sitter vacua as well as inflationary directions driven by two independent linear combination of axions. Due to a numerical control by fluxes, we show that cosmological parameters as the spectral index, tensor-to-scalar ratio and non-Gaussianities can be kept within observed bounds while preserving the desired hierarchies on physical scales. Moreover we compute the deviation of the inflationary trajectories from geodesics on field space in terms of the fluxes showing that for some regions, they fulfill the recent proposed swampland criterion for multi-field scenarios.
description: 24 pages, 6 figures. (v2): Typos corrected, References added. (v3) Some comments, one figure and references added. Version accepted for publication in Fortschritte der Physik
Evaluating CBR Similarity Functions for BAM Switching in Networks with Dynamic Traffic Profile
Creators: name: Oliveira, Eliseu
name: Freitas, Rafael
name: Martins, Joberto
Publisher: name: arXiv
Year: 2018
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: In an increasingly complex scenario for network management, a solution that allows configuration in more autonomous way with less intervention of the network manager is expected. This paper presents an evaluation of similarity functions that are necessary in the context of using a learning strategy for finding solutions. The learning approach considered is based on Case-Based Reasoning (CBR) and is applied to a network scenario where different Bandwidth Allocation Models (BAMs) behaviors are used and must be eventually switched looking for the best possible network operation. In this context, it is required to identify and configure an adequate similarity function that will be used in the learning process to recover similar solutions previously considered. This paper introduces the similarity functions, explains the relevant aspects of the learning process in which the similarity function plays a role and, finally, presents a proof of concept for a specific similarity function adopted. Results show that the similarity function was capable to get similar results from the existing use case database. As such, the use of similarity functions with CBR technique has proved to be potentially satisfactory for supporting BAM switching decisions mostly driven by the dynamics of input traffic profile.
description: https://lrsm.ibisc.univ-evry.fr/Advance2017/
Additional file 1 of Association between physical activity and falls among older adults in rural China: are there gender and age related differences?
Creators: name: Yuan, Yemin
name: Li, Jie
name: Fu, Peipei
name: Jing, Zhengyue
name: Wang, Yi
name: Zhou, Chengchao
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: Additional file 1: Appendix 1. All items in the Chinese version of International Physical Activity Questionnaire Short Form (IPAQ-S)
Neutrino Masses in the Supersymmetric Standard Model with Right-Handed Neutrinos and Spontaneous R-Parity Violation
Creators: name: Kitano, Ryuichiro
name: Oda, Kin-ya
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose an extension of the supersymmetric standard model with right-handed neutrinos and a singlet Higgs field, and study the neutrino masses in this model. The Majorana masses for the right-handed neutrinos are generated around the supersymmetry breaking scale through the vacuum expectation value of the singlet Higgs field. This model may induce spontaneous R-parity violation via the vacuum expectation value of the right-handed sneutrino. In the case, the effective theory is similar to a bilinear R-parity violating model. There are two sources for the neutrino masses: one is this bilinear R-parity breaking effect, and the other is the ordinary seesaw effect between left- and right-handed neutrinos. Combining these two effects, the hierarchical neutrino mass pattern arises even when the neutrino Yukawa matrices are not hierarchical. We acquire appropriate masses and mixings to explain both the solar and atmospheric neutrino oscillations.
description: 22pages, RevTeX, 3 ps figures; a reference added