cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Relationships between above-average preschool children’s transfer in classification learning and their cognitive abilities
Creators: name: Von Wittgenstein, Holly E.
Publisher: name: University of British Columbia
Year: 2010

description: The relationship between a preschool child's level of intelligence, as measured by the Stanford-Binet Intelligence Test (Form L-M), and his ability to perform classification tasks is investigated. The child's ability to generalize or to spontaneously apply previously learned concepts to similar but not identical tasks is assessed. The sample is composed of 43 three and four year old children who range from average to superior intelligence. It was originally hypothesized that those children having superior I.Q. scores would spontaneously apply learned concepts to new situations with or without the aid of prompting. Those children having the lower I.Q. scores were expected to require prompting before learned concepts would be applied in novel situations. The results were not completely as predicted. While the four year old groups generally followed the predicted pattern, the three year old groups showed some variation from the pattern predicted. The higher I.Q. three-year-olds made strong gains when prompted, whereas the lower I.Q. level group exhibited only losses when prompted. With the four-year-olds, there was little difference between the prompted and the non-prompted higher I.Q. group, whereas the lower I.Q. group receiving prompting did as well as or better than the non-prompted group. In either instance, age was found to be a major limiting factor. While not allowing for a parsimonious interpretation the results do indicate the usefulness of two hypotheses, spontaneity and optimal use, in accounting for differences in the transfer abilities of the preschool children.
รูปแบบความสัมพันธ์เชิงสาเหตุของปัจจัยที่ส่งผลต่อผลสัมฤทธิ์ทางการเรียนวิชาคณิตศาสตร์ ชั้นมัธยมศึกษาปีที่ 3 สังกัดสำนักงานเขตพื้นที่การศึกษากาฬสินธุ์ เขต 2
Creators: name: สมควร จำเริญพัฒน์
name: ไพศาล วรคำ
name: อรัญ ซุยกระเดื่อง
name: ไพศาล เอกะกุล
Publisher: name: มหาวิทยาลัยราชภัฏมหาสารคาม
Year: 2009
Subjects: ความสัมพันธ์เชิงสาเหตุ, ผลสัมฤทธิ์ทางการเรียนวิชาคณิตศาสตร์

description: 3, 3, วารสารมหาวิทยาลัยราชภัฏมหาสารคามมนุษยศาสตร์และสังคมศาสตร์
เปรียบเทียบผลสัมฤทธิ์และความคงทนทางการเรียนสาระการเรียนรู้หน่วยธรรมชาติรอบตัวของเด็กปฐมวัยที่ได้รับการจัดกิจกรรมเสริมประสบการณ์ระหว่างการเล่านิทานจากหนังสือภาพและการเล่านิทานโดยสื่อการ์ตูนแอนิเมชั่น 2 มิต
Creators: name: วาสนา บัวศรี
name: อลงกต ภูมิสายดร
name: ประวิทย์ สิมมาทัน
name: ขุนเพชร ใจปันทา
Publisher: name: มหาวิทยาลัยราชภัฏมหาสารคาม
Year: 2009
Subjects: ผลสัมฤทธิ์, ความคงทน, สื่อการ์ตูนแอนิเมชั่น 2 มิติ, เด็กปฐมวัย

description: 3, 3, วารสารมหาวิทยาลัยราชภัฏมหาสารคามมนุษยศาสตร์และสังคมศาสตร์
การดำเนินงานตามระบบการดูแลช่วยเหลือนักเรียนในการป้องกันปัญหายาเสพติดในโรงเรียนสังกัดองค์การบริหารส่วนจังหวัดมหาสารคาม
Creators: name: ชูชาติ สิทธิสาร
name: ศักดิ์พงศ์ หอมหวล
name: เอนก ศิลปนิลมาลย์
name: ธีระวัฒน์ เยี่ยมแสง
Publisher: name: มหาวิทยาลัยราชภัฏมหาสารคาม
Year: 2009
Subjects: ระบบดูแลช่วยเหลือนักเรียน, ยาเสพติด

description: 3, 3, วารสารมหาวิทยาลัยราชภัฏมหาสารคามมนุษยศาสตร์และสังคมศาสตร์
ODT FLOW: A Scalable Platform for Extracting, Analyzing, and Sharing Multi-source Multi-scale Human Mobility
Creators: name: Li, Zhenlong
name: Huang, Xiao
name: Hu, Tao
name: Ning, Huan
name: Ye, Xinyue
name: Li, Xiaoming
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Databases (cs.DB)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: In response to the soaring needs of human mobility data, especially during disaster events such as the COVID-19 pandemic, and the associated big data challenges, we develop a scalable online platform for extracting, analyzing, and sharing multi-source multi-scale human mobility flows. Within the platform, an origin-destination-time (ODT) data model is proposed to work with scalable query engines to handle heterogenous mobility data in large volumes with extensive spatial coverage, which allows for efficient extraction, query, and aggregation of billion-level origin-destination (OD) flows in parallel at the server-side. An interactive spatial web portal, ODT Flow Explorer, is developed to allow users to explore multi-source mobility datasets with user-defined spatiotemporal scales. To promote reproducibility and replicability, we further develop ODT Flow REST APIs that provide researchers with the flexibility to access the data programmatically via workflows, codes, and programs. Demonstrations are provided to illustrate the potential of the APIs integrating with scientific workflows and with the Jupyter Notebook environment. We believe the platform coupled with the derived multi-scale mobility data can assist human mobility monitoring and analysis during disaster events such as the ongoing COVID-19 pandemic and benefit both scientific communities and the general public in understanding human mobility dynamics.
Primitively divergent diagrams in $κ$-deformed scalar field with quartic self-interaction
Creators: name: Neves, M. J.
name: de Carvalho, C. A. A.
name: Farina, C.
name: Cougo-Pinto, M. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We obtain the primitively divergent diagrams in $κ$-deformed scalar field in four-dimensional spacetime with quartic self-interaction in order to investigate the effect of the fundamental length $q=1/(2κ)$ on such diagrams. Thanks to $κ$-deformation, we find that the dimensionally regularized forms of the diagrams lead to finite results in the limit of space-time dimension four. The effect of the deformation appears as a displacement of the poles in the complex plane.
Wide therapeutic time window for nimesulide neuroprotection in a model of transient focal cerebral ischemia in the rat
Creators: name: Candelario-Jalil, E.
name: Gonzalez-Falcon, A.
name: Garcia-Cabrera, M.
name: Leon, O. S.
name: Fiebich, B. L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Tissues and Organs (q-bio.TO)
subject: FOS: Biological sciences

description: Results from several studies indicate that cyclooxygenase-2 (COX-2) is involved in ischemic brain injury. The purpose of this study was to evaluate the neuroprotective effects of the selective COX-2 inhibitor nimesulide on cerebral infarction and neurological deficits in a standardized model of transient focal cerebral ischemia in rats. Three doses of nimesulide (3, 6 and 12 mg/kg; i.p.) or vehicle were administered immediately after stroke and additional doses were given at 6, 12, 24, 36 and 48 h after ischemia. In other set of experiments, the effect of nimesulide was studied in a situation in which its first administration was delayed for 3-24 h after ischemia. Total, cortical and subcortical infarct volumes and functional outcome (assessed by neurological deficit score and rotarod performance) were determined 3 days after ischemia. The effect of nimesulide on prostaglandin E(2) (PGE(2)) levels in the injured brain was also investigated. Nimesulide dose-dependently reduced infarct volume and improved functional recovery when compared to vehicle. Of interest is the finding that neuroprotection conferred by nimesulide (reduction of infarct size and neurological deficits and improvement of rotarod performance) was also observed when treatment was delayed until 24 h after ischemia. Further, administration of nimesulide in a delayed treatment paradigm completely abolished PGE(2) accumulation in the postischemic brain, suggesting that COX-2 inhibition is a promising therapeutic strategy for cerebral ischemia to target the late-occurring inflammatory events which amplify initial damage.
A Lorentz invariant formulation of the Yang-Mills theory with gauge invariant ghost field Lagrangian
Creators: name: Slavnov, A. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A new formulation of the Yang-Mills theory which allows a manifestly covariant gauge fixing accompanied by a gauge invariant ghost field interaction is proposed. The gauge condition selects a unique representative in the class of gauge equivalent configurations.
description: 9 pages
Supplementary document for Automated Assembly of Hybrid-Integrated, Chip-Scale Laser Systems - 7456546.pdf
Creators: name: Levaur, Taylor
name: Zhao, Xiao-Lei
name: Sweatt, Lance
name: Ghimire, Mohan
name: Zhu, Lin
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: Assembly Process in Detail
title: Biblioteche private nella Sardegna del Seicento
Creators: name: Usalla, Laura
Publisher: name: UNICApress
Year: 2020

description: Frutto di una lunga ricerca d’archivio, il volume contiene l’edizione e lo studio di 120 documenti notarili utili per la ricostruzione delle biblioteche private nella Sardegna del Seicento. Si tratta principalmente di inventari post mortem attraverso i quali è possibile rilevare la consistenza e le caratteristiche dei fondi librari in uso a personaggi diversi per estrazione sociale e ruolo professionale. I materiali raccolti fanno del repertorio uno strumento prezioso per gli studiosi di storia del libro e di storia della cultura.
Detailed Abundances for 28 Metal-poor Stars: Stellar Relics in the Milky Way
Creators: name: Lai, David K.
name: Bolte, Michael
name: Johnson, Jennifer A.
name: Lucatello, Sara
name: Heger, Alexander
name: Woosley, S. E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of an abundance analysis for a sample of stars with $-4
description: 48 pages, 30 figures, 17 tables. Updated to ApJ version. Multiple typos and errors fixed
A Unified View on Geometric Phases and Exceptional Points in Adiabatic Quantum Mechanics
Creators: name: Pap, Eric J.
name: Boer, Daniël
name: Waalkens, Holger
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 81Q70, 81Q12, 55R99

description: We present a formal geometric framework for the study of adiabatic quantum mechanics for arbitrary finite-dimensional non-degenerate Hamiltonians. This framework generalizes earlier holonomy interpretations of the geometric phase to non-cyclic states appearing for non-Hermitian Hamiltonians. We start with an investigation of the space of non-degenerate operators on a finite-dimensional state space. We then show how the energy bands of a Hamiltonian family form a covering space. Likewise, we show that the eigenrays form a bundle, a generalization of a principal bundle, which admits a natural connection yielding the (generalized) geometric phase. This bundle provides in addition a natural generalization of the quantum geometric tensor and derived tensors, and we show how it can incorporate the non-geometric dynamical phase as well. We finish by demonstrating how the bundle can be recast as a principal bundle, so that both the geometric phases and the permutations of eigenstates can be expressed simultaneously by means of standard holonomy theory.
Using Transit Timing Observations to Search for Trojans of Transiting Extrasolar Planets
Creators: name: Ford, Eric B.
name: Holman, Matthew J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Theoretical studies predict that Trojans are likely a frequent byproduct of planet formation and evolution. We examine the sensitivity of transit timing observations for detecting Trojan companions to transiting extrasolar planets. We demonstrate that this method offers the potential to detect terrestrial-mass Trojans using existing ground-based observatories. We compare the transit timing variation (TTV) method with other techniques for detecting extrasolar Trojans and outline the future prospects for this method.
description: submitted to ApJL, 12 pages, 2 figures
Risk-Aware Fine-Grained Access Control in Cyber-Physical Contexts
Creators: name: Liu, Jinxin
name: Simsek, Murat
name: Kantarci, Burak
name: Erol-Kantarci, Melike
name: Malton, Andrew
name: Walenstein, Andrew
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: K.6.5; I.5.3

description: Access to resources by users may need to be granted only upon certain conditions and contexts, perhaps particularly in cyber-physical settings. Unfortunately, creating and modifying context-sensitive access control solutions in dynamic environments creates ongoing challenges to manage the authorization contexts. This paper proposes RASA, a context-sensitive access authorization approach and mechanism leveraging unsupervised machine learning to automatically infer risk-based authorization decision boundaries. We explore RASA in a healthcare usage environment, wherein cyber and physical conditions create context-specific risks for protecting private health information. The risk levels are associated with access control decisions recommended by a security policy. A coupling method is introduced to track coexistence of the objects within context using frequency and duration of coexistence, and these are clustered to reveal sets of actions with common risk levels; these are used to create authorization decision boundaries. In addition, we propose a method for assessing the risk level and labelling the clusters with respect to their corresponding risk levels. We evaluate the promise of RASA-generated policies against a heuristic rule-based policy. By employing three different coupling features (frequency-based, duration-based, and combined features), the decisions of the unsupervised method and that of the policy are more than 99% consistent.
description: ACM Digital Threats: Research and Practice, 2021 30 pages, 14 Figures, 14 Tables
Wide-field X-ray observations of the supernova remnant Puppis A with the SRG/ART-XC telescope
Creators: name: Krivonos, R.
name: Arefiev, V.
name: Lapshov, I.
name: Filippova, E.
name: Burenin, R.
name: Semena, A.
name: Grebenev, S.
name: Sazonov, S.
name: Shtykovsky, A.
name: Tkachenko, A.
name: Lutovinov, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The Spectrum-Roentgen-Gamma (SRG) observatory is currently conducting its 4-year all-sky X-ray survey, started on December 12, 2019. The survey is periodically interrupted for technological operations with the spacecraft. These time intervals are usually used by the Mikhail Pavlinsky ART-XC telescope to perform calibrations. In this context, SRG carried out scanning observations of the Puppis A supernova remnant (SNR) with the aim to check the imaging performance of ART-XC and to optimize the technique of image reconstruction for extended objects. Using the unique imaging capabilities of ART-XC and its uniform coverage of the entire Puppis A region, we attempted to investigate the morphology of this SNR at energies >4 keV, and to search for previously unknown X-ray sources. Puppis A was observed in 2019-2020, conducting 1.5 x 1.5 degrees shallow surveys with an exposure of 36 hours. Additional deep pointed observations of the central part of Puppis A were carried out in 2021 lasted 31 hours to highlight the morphology of the extended emission. The X-ray emission of the Puppis A was significantly detected as an extended structure in the 4-6 keV energy band. The morphology of the emission is in general agreement with that observed in soft X-rays previously. The deep sky image of Puppis A obtained with the ART-XC telescope is characterized by a typical SNR shell rim morphology, an extended emission and a bright emission knot in the north-eastern part of the supernova shell. Also, four point X-ray sources have been detected, including three objects identified in catalogs, and one newly discovered X-ray emitter.
description: 5 pages, 7 figures, accepted for publication in MNRAS
First principles investigations of the electronic, magnetic and chemical bonding properties of CeTSn (T=Rh,Ru)
Creators: name: Matar, S. F.
name: Riecken, J. F.
name: Chevalier, B.
name: Poettgen, R.
name: Eyert, V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The electronic structures of CeRhSn and CeRuSn are self-consistently calculated within density functional theory using the local spin density approximation for exchange and correlation. In agreement with experimental findings, the analyses of the electronic structures and of the chemical bonding properties point to the absence of magnetization within the mixed valent Rh based system while a finite magnetic moment is observed for trivalent cerium within the Ru-based stannide, which contains both trivalent and intermediate valent Ce.
description: 6 pages, 7 figures, for more information see http://www.physik.uni-augsburg.de/~eyert/
AndrewGYork/high_na_single_objective_lightsheet: Work-in-progress
Creators: name: Millett-Sikking, Alfred
name: York, Andrew
Publisher: name: Zenodo
Year: 2019

description: This isn't even a pre-print yet; we just want to get the parts list and build instructions out into the world without delay.

Work-in-progress; not yet peer reviewed. Read the publication at:

andrewgyork.github.io/high_na_single_objective_lightsheet
Declaration of Intention of Peter Giess
Creators: name: United States. Bureau Of Naturalization
Publisher: name: No Publisher Supplied
Year: 1916

description: Declaration of Intention to become a citizen of the United States, as filled out and signed by: Peter Giess   Applicant age: 30Occupation: Time KeeperCountry of Origin: GermanyDate of Birth: 28th June 1885Sailed to the US aboard the vessel:  Virginian City of residence at time of declaration: Atlantic City NJDeclaration submitted and sworn on date:18th January 1916
Declaration of Intention of Christoph Riecker
Creators: name: United States. Bureau Of Naturalization
Publisher: name: No Publisher Supplied
Year: 1916

description: Declaration of Intention to become a citizen of the United States, as filled out and signed by: Christoph Riecker   Applicant age:33Occupation: BakerCountry of Origin: GermanyDate of Birth: 28th  April 1883Sailed to the US aboard the vessel: Amerika   City of residence at time of declaration: Atlantic City, NJDeclaration submitted and sworn on date: 17th July 1916
Wavelet analysis of a large sample of AGN at high radio frequencies
Creators: name: Hovatta, T.
name: Lehto, H. J.
name: Tornikoski, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have studied the characteristic timescales of 80 AGNs at 22, 37 and 90 GHz examining the properties of the wavelet method and comparing them to traditional Fourier-based methods commonly used in astronomy. We used the continuous wavelet transform with the Morlet wavelet to study the characteristic timescales. We also gain information when the timescale is present in the flux curve and if it is persistent or not. Our results show that the sources are not periodic and changes in the timescales over a long time are common. The property of wavelets to be able to distinguish when the timescale has been present is superior to the Fourier-based methods. Therefore we consider it appropriate to use wavelets when the quasi-periodicities in AGNs are studied.
description: 14 pages, 10 figures, A&A in press
Ongoing Galactic Accretion: Simulations and Observations of Condensed Gas in Hot Halos
Creators: name: Peek, J. E. G.
name: Putman, M. E.
name: Sommer-Larsen, Jesper
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Ongoing accretion onto galactic disks has been recently theorized to progress via the unstable cooling of the baryonic halo into condensed clouds. These clouds have been identified as analogous to the High-Velocity Clouds (HVCs) observed in HI in our Galaxy. Here we compare the distribution of HVCs observed around our own Galaxy and extra-planar gas around the Andromeda galaxy to these possible HVC analogs in a simulation of galaxy formation that naturally generates these condensed clouds. We find a very good correspondence between these observations and the simulation, in terms of number, angular size, velocity distribution, overall flux and flux distribution of the clouds. We show that condensed cloud accretion only accounts for ~ 0.2 M_solar / year of the current overall Galactic accretion in the simulations. We also find that the simulated halo clouds accelerate and become more massive as they fall toward the disk. The parameter space of the simulated clouds is consistent with all of the observed HVC complexes that have distance constraints, except the Magellanic Stream which is known to have a different origin. We also find that nearly half of these simulated halo clouds would be indistinguishable from lower-velocity gas and that this effect is strongest further from the disk of the galaxy, thus indicating a possible missing population of HVCs. These results indicate that the majority of HVCs are consistent with being infalling, condensed clouds that are a remnant of Galaxy formation.
description: 10 pages, 6 figures, ApJ Accepted. Some changes to technique
Bond stretching phonon softening and angle-resolved photoemission kinks in optimally doped Bi2Sr1.6La0.4Cu2O6 superconductors
Creators: name: Graf, J.
name: d'Astuto, M.
name: Jozwiak, C.
name: Garcia, D. R.
name: Saini, N. L.
name: Krisch, M.
name: Ikeuchi, K.
name: Baron, A. Q. R.
name: Eisaki, H.
name: Lanzara, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report the first measurement of the optical phonon dispersion in optimally doped single layer Bi2Sr1.6La0.4Cu2O6+delta using inelastic x-ray scattering. We found a strong softening of the Cu-O bond stretching phonon at about q=(0.25,0,0) from 76 to 60 meV, similar to the one reported in other cuprates. A direct comparison with angle-resolved photoemission spectroscopy measurements taken on the same sample, revealed an excellent agreement in terms of energy and momentum between the ARPES nodal kink and the soft part of the bond stretching phonon. Indeed, we find that the momentum space where a 63 meV kink is observed can be connected with a vector q=(xi,0,0) with xi~0.22, which corresponds exactly to the soft part of the bond stretching phonon mode. This result supports an interpretation of the ARPES kink in terms of electron-phonon coupling.
description: submited to PRL
Testudo imbricata Linnaeus 1766
Creators: name: Linné, C. Von
Publisher: name: Impensis Direct. Laurentii Salvii
Year: 1766
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Testudines
Reptilia
Testudinidae
Testudo
Testudo imbricata

description: imbricata.
2. T pedibus pinniformibus, testa cordata subcarinata serrata scutellis imbricatis, cauda squamata. Gron. zoopb. 7 2. Bont. ¡sav 82..
Testudo squamata. Caretta. Tetre antill 2 p. 229n. 24. Caret.
Raj. quadr 258. Testudo
Habitat in Mari Americano, Asiatico.
Lamella artiﬁcum ex hac desumuntur.
description: Published as part of Linné, C. Von, 1766, Regnum Animale - Reptiles, pp. 1-45 in Systema naturæ per regna tria naturæ, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis., Holmiae :Impensis Direct. Laurentii Salvii on page 38, DOI: 10.5281/zenodo.14443611
Flexible plasma multi-jet source operated in radial discharge configuration
Creators: name: Corbella, Carles
name: Portal, Sabine
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Following up a recent study describing a flexible plasma source operated in planar geometry, the performance of a cold atmospheric plasma jet (CAPJ) matrix emanating radially from a soft cylindrical surface in the open air is presented. The plasma device, which has a set of small outlets produced in its side surface, has a length of 12 cm and an outer diameter of 5.4 cm. The dielectric barrier discharge (DBD) sustaining the plasma jets is generated in helium flowing between two coaxial electrodes, which are separated by both an insulating tape and a cylindrical wall made of polymer foam. Two operation modes are considered: four equidistant CAPJs at the same axial position (brush mode) and three aligned CAPJs at constant azimuthal angle (comb mode). All discharges, excited by 15 kHz-AC voltages at 3.8 kV in amplitude, have resulted in uniform lengths and intensities of the jets. Consumed discharge powers of between 0.1 and 1 W have been estimated from current-voltage measurements. Optical emission spectroscopy (OES) has shown the preponderance of hydroxyl groups, nitrogen molecules and helium atoms in the active DBD region and the jet afterglow zone. This new design of CAPJ anticipates promising applications for treating the inner surface of hollow and delicate components for activation or healing purposes.
Mock catalogues of emission line galaxies based on the local mass density in dark-matter only simulations
Creators: name: Osato, Ken
name: Nishimichi, Takahiro
name: Takada, Masahiro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The high-precision measurement of spatial clustering of emission line galaxies (ELGs) is a primary objective for upcoming cosmological spectroscopic surveys. The source of strong emission of ELGs is nebular emission from surrounding ionized gas irradiated by massive short-lived stars in star-forming galaxies. As a result, ELGs are more likely to reside in newly-formed halos and this leads to a nonlinear relation between ELG number density and matter density fields. In order to estimate the covariance matrix of cosmological observables, it is essential to produce many independent realisations to simulate ELG distributions for large survey volumes. To this end, we present a novel and fast scheme to populate ELGs in dark-matter only $N$-body simulations based on local density field. This method enables fast production of mock ELG catalogues suitable for verifying analysis methods and quantifying observational systematics in upcoming spectroscopic surveys and can populate ELGs in moderately high-density regions even though the halo structure cannot be resolved due to low resolution. The power spectrum of simulated ELGs is consistent with results of hydrodynamical simulations up to fairly small scales ($\lesssim 1 h \, \mathrm{Mpc}^{-1}$), and the simulated ELGs are more likely to be found in filamentary structures, which is consistent with results of semi-analytic and hydrodynamical simulations. Furthermore, we address the redshift-space power spectrum of simulated ELGs. The measured multipole moments of simulated ELGs clearly exhibit a weaker Finger-of-God effect than those of matter due to infalling motions towards halo centre, rather than random virial motions inside halos.
description: 10 pages, 9 figures, MNRAS in press
Asteroseismic analysis of 15 solar-like oscillating evolved stars
Creators: name: Orhan, Z. Çelik
name: Yıldız, M.
name: Kayhan, C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Asteroseismology using space-based telescopes is vital to our understanding of stellar structure and evolution. {\textit{CoRoT}}, {\textit{Kepler}}, and {\textit{TESS}} space telescopes have detected large numbers of solar-like oscillating evolved stars. %(kaynaklar, Kallinger, vb ). Solar-like oscillation frequencies have an important role in the determination of fundamental stellar parameters; in the literature, the relations between the two is established by the so-called scaling relations. % These scaling relations are in better agreement with mass and radius of main-sequence stars with large separation ($Δν$) and frequency of maximum amplitude (${ν_{\rm max}}$). In this study, we analyse data obtained from the observation of 15 evolved solar-like oscillating stars using the {\textit{Kepler}} and ground-based %\textit{CoRoT} telescopes. The main purpose of the study is to determine very precisely the fundamental parameters of evolved stars by constructing interior models using asteroseismic parameters. We also fit the reference frequencies of models to the observational reference frequencies caused by the He {\scriptsize II} ionization zone. The 15 evolved stars are found to have masses and radii within ranges of $0.79$-$1.47$ $M_{\rm sun}$ and $1.60$-$3.15$ $R_{\rm sun}$, respectively. Their model ages range from $2.19$ to $12.75$ Gyr. %Using a number of methods based on conventional and modified scaling relations and evolutionary models constructed with using the {\small {MESA}} code, we determine stellar radii, masses and ages. It is revealed that fitting reference frequencies typically increase the accuracy of asteroseismic radius, mass, and age. The typical uncertainties of mass and radius are $\sim$ 3-6 and $\sim$ 1-2 per cent, respectively. Accordingly, the differences between the model and literature ages are generally only a few Gyr.
Viscous Modified Gravity on a RS Brane Embedded in AdS5
Creators: name: Brevik, Iver
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider a modified gravity fluid on a Randall-Sundrum II brane situated at y=0, the action containing a power αof the scalar curvature. As is known from 4D spatially flat modified gravity, the presence of a bulk viscosity may drive the cosmic fluid into the phantom region (w < -1) and thereafter inevitably into the Big Rip singularity, even it is initially nonviscous and lies in the quintessence region (w > -1). The condition for this to occur is that the bulk viscosity contains the power (2α-1) of the scalar expansion. We combine this with the 5D RS II model, and find that the Big Rip, occurring for α> 1/2, carries over to the metric for the bulk metric, |y|>0. Actually, the scale factors on the brane and in the bulk become simply proportional to each other.
description: 12 pages, no figures; to appear in Eur. Phys. J. C
Comparison of weak lensing masses and X-ray properties of galaxy clusters
Creators: name: Hoekstra, Henk
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present measurements of the masses of 20 X-ray luminous clusters of galaxies at intermediate redshifts, determined from a weak lensing analysis of deep archival R-band data obtained using the Canada-France-Hawaii-Telescope. Compared to previous work, our analysis accounts for a number of effects that are typically ignored, but can lead to small biases, or incorrect error estimates. We derive masses that are essentially model independent and find that they agree well with measurements of the velocity dispersion of cluster galaxies and with the results of X-ray studies. Assuming a power law between the lensing mass and the X-ray temperature, M_2500 T^alpha, we find a best fit slope of alpha=1.34^{+0.30}_{-0.28}. This slope agrees with self-similar cluster models and studies based on X-ray data alone. For a cluster with a temperature of kT=5keV we obtain a mass M_{2500}=(1.4+-0.2)\times 10^{14}h^{-1}Msun in fair agreement with recent Chandra and XMM studies.
description: 16 pages, 8 figures. Revised version submitted to MNRAS (after minor corrections suggested by referee)
Anisotropic flow of identified hadrons in Xe-Xe collisions at $\sqrt{s_{\rm NN}}$ = 5.44TeV
Creators: name: ALICE Collaboration
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Measurements of elliptic ($v_2$) and triangular ($v_3$) flow coefficients of $π^{\pm}$, K$^{\pm}$, p+$\rm \overline{p}$, K$^0_{\rm S}$, and $Λ+ \overlineΛ$ obtained with the scalar product method in Xe-Xe collisions at $\sqrt{s_{\rm NN}}$ = 5.44 TeV are presented. The results are obtained in the rapidity range $\left | y \right |<0.5$ and reported as a function of transverse momentum, $p_{\rm T}$, for several collision centrality classes. The flow coefficients exhibit a particle mass dependence for $p_{\rm T}<3$ GeV/$c$, while a grouping according to particle type (i.e., meson and baryon) is found at intermediate transverse momenta (3< $p_{\rm T}$ <8 GeV/$c$). The magnitude of the baryon $v_{2}$ is larger than that of mesons up to $p_{\rm T}$ = 6 GeV/$c$. The centrality dependence of the shape evolution of the $p_{\rm T}$-differential $v_2$ is studied for the various hadron species. The $v_2$ coefficients of $π^{\pm}$, K$^{\pm}$, and p+$\rm \overline{p}$ are reproduced by MUSIC hydrodynamic calculations coupled to a hadronic cascade model (UrQMD) for $p_{\rm T} <1$ GeV/$c$. A comparison with $v_{\rm n}$ measurements in the corresponding centrality intervals in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV yields an enhanced $v_2$ in central collisions and diminished value in semicentral collisions.
description: 32 pages, 14 captioned figures, 2 tables, authors from page 26, published version, figures at http://alice-publications.web.cern.ch/node/7224
Dynamic Modeling of User Preferences for Stable Recommendations
Creators: name: Olaleke, Oluwafemi
name: Oseledets, Ivan
name: Frolov, Evgeny
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: H.3.3

description: In domains where users tend to develop long-term preferences that do not change too frequently, the stability of recommendations is an important factor of the perceived quality of a recommender system. In such cases, unstable recommendations may lead to poor personalization experience and distrust, driving users away from a recommendation service. We propose an incremental learning scheme that mitigates such problems through the dynamic modeling approach. It incorporates a generalized matrix form of a partial differential equation integrator that yields a dynamic low-rank approximation of time-dependent matrices representing user preferences. The scheme allows extending the famous PureSVD approach to time-aware settings and significantly improves its stability without sacrificing the accuracy in standard top-$n$ recommendations tasks.
description: 8 pages, 1 figure, accepted at UMAP'21 conference
Electronic Nature of Charge Density Wave and Electron-Phonon Coupling in Kagome Superconductor KV$_3$Sb$_5$
Creators: name: Luo, Hailan
name: Gao, Qiang
name: Liu, Hongxiong
name: Gu, Yuhao
name: Wu, Dingsong
name: Yi, Changjiang
name: Jia, Junjie
name: Wu, Shilong
name: Luo, Xiangyu
name: Xu, Yu
name: Zhao, Lin
name: Wang, Qingyan
name: Mao, Hanqing
name: Liu, Guodong
name: Zhu, Zhihai
name: Shi, Youguo
name: Jiang, Kun
name: Hu, Jiangping
name: Xu, Zuyan
name: Zhou, X. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The Kagome superconductors AV3Sb5 (A=K, Rb, Cs) have received enormous attention due to their nontrivial topological electronic structure, anomalous physical properties and superconductivity. Unconventional charge density wave (CDW) has been detected in AV3Sb5. High-precision electronic structure determination is essential to understand its origin. Here we unveil electronic nature of the CDW phase in our high-resolution angle-resolved photoemission measurements on KV3Sb5. We have observed CDW-induced Fermi surface reconstruction and the associated band folding. The CDW-induced band splitting and the associated gap opening have been revealed at the boundary of the pristine and reconstructed Brillouin zones. The Fermi surface- and momentum-dependent CDW gap is measured and the strongly anisotropic CDW gap is observed for all the V-derived Fermi surface. In particular, we have observed signatures of the electron-phonon coupling in KV3Sb5. These results provide key insights in understanding the nature of the CDW state and its interplay with superconductivity in AV3Sb5 superconductors.
description: 21 pages, 5 figures
Pulsar model of the high energy phenomenology of LS 5039
Creators: name: Sierpowska-Bartosik, Agnieszka
name: Torres, Diego F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Under the assumption that LS 5039 is a system composed by a pulsar rotating around an O6.5V star in a $\sim 3.9$ day orbit, we present the results of a theoretical modeling of the high energy phenomenology observed by the High Energy Stereoscopy Array (H.E.S.S.). This model (including detailed account of the system geometry, Klein-Nishina inverse Compton, $γ$-$γ$ absorption, and cascading) is able to describe well the rich observed phenomenology found in the system at all timescales, both flux and spectrum-wise.
description: Figures and results are unchanged. Some new text and new references
Quark-Gluon Plasma - New Frontiers
Creators: name: Shuryak, Edward
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: As implied by organizers, this talk is not a conference summary but rather an outline of progress/challenges/``frontiers'' of the theory. Some fundamental questions addressed are: Why is sQGP such a good liquid? Do we understand (de)confinement and what do we know about ``magnetic'' objects creating it? Can we understand the AdS/CFT predictions, from the gauge theory side? Can they be tested experimentally? Can AdS/CFT duality help us understand rapid equilibration/entropy production? Can we work out a complete dynamical ``gravity dual'' to heavy ion collisions?
description: final talk at Quark Matter 2008, Jaipur, India, Feb.2008
Two-Site shift Product Wave Function Renormalization Group Method Applied to Quantum Systems
Creators: name: Ueda, Hiroshi
name: Nishino, Tomotoshi
name: Kusakabe, Koichi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We report a way of wave function estimation for the density matrix renormalization group (DMRG) method applied to quantum systems, which has 2-site modulation, when the system size extension is necessary in both the finite and the infinite algorithms. The estimation is performed by renormalization group (RG) transformation applied to the ground state wave function, which is represented as the matrix product. This RG scheme is known as the product wave function renormalization group (PWFRG) method. In order to treat the 2-site modulation, the operation of the RG transformation is shifted by amount of 2 lattice sites. It turns out that this 2-site shift algorithm provides better wave function estimation in the thermodynamic limit, compared with the previously known PWFRG algorithm.
description: 7 pages, 6figures
Response of atomic spin-based sensors to magnetic and nonmagnetic perturbations
Creators: name: Padniuk, Mikhail
name: Kopciuch, Marek
name: Cipolletti, Riccardo
name: Wickenbrock, Arne
name: Budker, Dmitry
name: Pustelny, Szymon
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Searches for pseudo-magnetic spin couplings require implementation of techniques capable of sensitive detection of such interactions. While Spin-Exchange Relaxation Free (SERF) magnetometry is one of the most powerful approaches enabling the searches, it suffers from a strong magnetic coupling, deteriorating the pseudo-magnetic coupling sensitivity. To address this problem, here, we compare, via numerical simulations, the performance of SERF magnetometer and noble-gas-alkali-metal co-magnetometer, operating in a so-called self-compensating regime. We demonstrate that the co-magnetometer allows reduction of the sensitivity to low-frequency magnetic fields without loss of the sensitivity to nonmagnetic couplings. Based on that we investigate the responses of both systems to the oscillating and transient spin perturbations. Our simulations reveal about five orders of magnitude stronger response to the neutron pseudo-magnetic coupling and about three orders of magnitude stronger response to the proton pseudo-magnetic coupling of the co-magnetometer than those of the SERF magnetometer. Different frequency responses of the co-magnetometer to magnetic and nonmagnetic perturbations enables differentiation between these two types of interactions. This outlines the ability to implement the co-magnetometer as an advanced sensor for the Global Network of Optical Magnetometer for Exotic Physics searches (GNOME), aiming at detection of ultra-light bosons (e.g., axion-like particles).
description: 15 pages, 3 figures
The Tupilaq : image and label : understanding East Greenland carvings
Creators: name: Romalis, Sheila Ruth
Publisher: name: University of British Columbia
Year: 2010

description: This thesis attempts to understand the nature of the Greenlandic image "Tupilaq" in traditional Kalaadlit culture and in its modern context. The same term is applied today in Greenland to a variety of images carved as small figures for the tourist or art markets. This thesis examines the ways in which the images and the application of the term have changed. This study describes the traditional context of the TUPILAQ image and establishes a time frame for the inception of carvings labelled "Tupilaq". Data used to support this investigation were drawn from ethnographic records, historical accounts, and museum exhibit reports. It becomes clear that the Tupilaq figure exists as a distinct and new category of material culture which stands apart from its mythic image. An analysis of these carvings and interviews with their carvers show that the content of Tupilaq figures is not what their label implies. The analysis is carried a step further, examining the development of this carving production, the market for these carvings as cultural artifacts, and the concerns of their producers and consumers. This investigation demonstrates that the ways in which East Greenlanders modified and continue to modify this carving production relates directly to their necessity to establish their group's identity in a changing cultural environment. This thesis shows that the label -Tupilaq- is the symbolic link between traditional and contemporary society. In conclusion, interpretation of material culture is discussed as it applies to Tupilaq figures; we need to go beyond the label for a more adequate interpretation of the content and the occurrence of cultural images as material objects.
Certifying One-Phase Technology-Assisted Reviews
Creators: name: Lewis, David D.
name: Yang, Eugene
name: Frieder, Ophir
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Technology-assisted review (TAR) workflows based on iterative active learning are widely used in document review applications. Most stopping rules for one-phase TAR workflows lack valid statistical guarantees, which has discouraged their use in some legal contexts. Drawing on the theory of quantile estimation, we provide the first broadly applicable and statistically valid sample-based stopping rules for one-phase TAR. We further show theoretically and empirically that overshooting a recall target, which has been treated as innocuous or desirable in past evaluations of stopping rules, is a major source of excess cost in one-phase TAR workflows. Counterintuitively, incurring a larger sampling cost to reduce excess recall leads to lower total cost in almost all scenarios.
description: 10 pages, 4 figures, accepted at CIKM 2021
A Peculiarly Short-duration Gamma-Ray Burst from Massive Star Core Collapse
Creators: name: Zhang, B. -B.
name: Liu, Z. -K.
name: Peng, Z. -K.
name: Li, Y.
name: Lü, H. -J.
name: Yang, J.
name: Yang, Y. -S.
name: Yang, Y. -H.
name: Meng, Y. -Z.
name: Zou, J. -H.
name: Ye, H. -Y.
name: Wang, X. -G.
name: Mao, J. -R.
name: Zhao, X. -H.
name: Bai, J. -M.
name: Castro-Tirado, A. J.
name: Hu, Y. -D.
name: Dai, Z. -G.
name: Liang, E. -W.
name: Zhang, B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Gamma-ray bursts (GRBs) have been phenomenologically classified into long and short populations based on the observed bimodal distribution of duration. Multi-wavelength and multi-messenger observations in recent years have revealed that in general long GRBs originate from massive star core collapse events, whereas short GRBs originate from binary neutron star mergers. It has been known that the duration criterion is sometimes unreliable, and multi-wavelength criteria are needed to identify the physical origin of a particular GRB. Some apparently long GRBs have been suggested to have a neutron star merger origin, whereas some apparently short GRBs have been attributed to genuinely long GRBs whose short, bright emission is slightly above the detector's sensitivity threshold. Here we report the comprehensive analysis of the multi-wavelength data of a bright short GRB 200826A. Characterized by a sharp pulse, this burst shows a duration of 1 second and no evidence of an underlying longer-duration event. Its other observational properties such as its spectral behaviors, total energy, and host galaxy offset, are, however, inconsistent with those of other short GRBs believed to originate from binary neutron star mergers. Rather, these properties resemble those of long GRBs. This burst confirms the existence of short duration GRBs with stellar core-collapse origin, and presents some challenges to the existing models.
description: Nature Astronomy, the authors' version; 24 pages, 7 figures, 3 tables
Strong and fast rising pressure waves emitted by plasmonic vapor nanobubbles
Creators: name: Lombard, Julien
name: Lam, Julien
name: Detcheverry, Francois
name: Biben, Thierry
name: Merabia, Samy
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Plasmonic vapour nanobubbles are currently considered for a wide variety of applications ranging from solar energy harvesting and photoacoustic imaging to nanoparticle-assisted cancer therapy. Yet, due their small size and unstable nature, their generation and consequences remain difficult to characterize. Here, building on a phase-field model, we report on the existence of strong pressure waves that are emitted when vapor nanobubbles first form around a laser-heated nanoparticle immersed in water, and subsequently after bubble rebound. These effects are strongest when the fluid is locally brought high in its supercritical state, which may be realized with a short laser pulse. Because of the highly out-of-equilibrium nature of nanobubble generation, the waves combine a high pressure peak with a fast pressure rising time, and propagate in water over micron distances, opening the way to induce spatially and temporally localized damage. Discussing the consequences on biological cell membranes, we conclude that acoustic-mediated perforation is more efficient than nanobubble expansion to breach membrane. Our findings should serve as guide for optimizing the thermoacoustic conversion efficiency of plasmonic vapor nanobubbles.