cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spontaneously vectorized Einstein-Gauss-Bonnet black holes
Creators: name: Barton, Simon
name: Hartmann, Betti
name: Kleihaus, Burkhard
name: Kunz, Jutta
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct spontaneously vectorized black holes where a real vector field is coupled to the Gauss-Bonnet invariant. We employ three coupling functions for the vector field, and determine the respective domains of existence of the vectorized black holes. These domains of existence are bounded by the marginally stable Schwarzschild black holes and the critical vectorized black holes. We also address the effects of a mass term. For a given black hole mass the horizon radius is smaller for the vectorized black holes than for the Schwarzschild black holes. Since the vector field vanishes at the horizon, there is no contribution from the Gauss-Bonnet term to the entropy of the vectorized black holes.
description: 12 pages, 8 figures
'Oumuamua as a light sail -- evidence against artificial origin
Creators: name: Curran, S. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Applied Physics (physics.app-ph)
subject: Popular Physics (physics.pop-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: `Oumuamua, the first detected interstellar visitor to the solar system, exhibits non-gravitational acceleration in its trajectory. Ruling out other means of propulsion, such as the evaporation of material via a cometary tail, it has been argued that radiation pressure is responsible for this acceleration. From this, the mass of the object must be approximately 40 tonnes, and given its dimensions, `Oumuamua must have a thickness of ~1 mm if of a similar rock/iron composition as the Earth. This raises the much publicised possibility that `Oumuamua is artificial in origin, sent intentionally across interstellar space by an alien civilisation, This conclusion, however, relies upon the common misapprehension that light (solar) sails can accelerate to a considerable fraction of the speed of light, permitting rapid interstellar travel. We show that such speeds are unattainable for conceptual man-made sails and that, based upon its observed parameters, `Oumuamua would require half a billion years just to travel to our solar system from its closest likely system of origin. These cosmological time-scales make it very unlikely that this is a probe sent by an alien civilisation.
description: Accepted by A&A Letters
Tamarida Taiti & Ferrara 2004
Creators: name: Taiti, Stefano
name: Checcucci, Ilaria
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Isopoda
Trachelipodidae
Tamarida

description: Genus Tamarida Taiti & Ferrara, 2004 Type-species: Tamarida setigera Taiti & Ferrara, 2004 by original designation.
description: Published as part of Taiti, Stefano & Checcucci, Ilaria, 2009, New species and records of terrestrial Isopoda (Crustacea, Oniscidea) from Socotra Island, Yemen, pp. 73-103 in ZooKeys 31 (3) on page 94, DOI: 10.3897/zookeys.31.140, http://zenodo.org/record/576582
description: {"references": ["Taiti S, Ferrara F (2004) The terrestrial Isopoda (Crustacea: Oniscidea) of the Socotra Archipelago. Fauna of Arabia 20: 211 - 325."]}
IMPACT OF CIRCUIT TRAINING ON MUSCULAR STRENGTH AND LEG EXPLOSIVE POWER AMONG VOLLEYBALL PLAYERS
Creators: name: Dr. K. Shanmugasundaram
Publisher: name: Zenodo
Year: 2023

description: The Circuit training may have significant improvement on physical fitness of human beings. So the researcher aims to study the impact of Circuit Training on Muscular Strength and Leg Explosive Power among Volleyball players. For this purpose, 30 men players from different Colleges in Namakkal in the age group of 18 to 25 years were selected at random. They were divided into two groups, group I was treated as, experimental group and group II was treated as control group. Experimental group was given six weeks Circuit Training and the control group was not given any treatment. Physical Fitness variables on Muscular Strength and leg explosive power it was assessed through Sit-ups, Standing broad jump test. The data were collected before and after the training period and collected data was computed by dependent ‘t’ test in all cases level of significance was fixed at 0.05 level. . The result concluded that there was significant improvement on Muscular Strength and leg explosive power level due to the influence of Circuit Training than the control group among volleyball players.
Voltage-Gate Assisted Spin-Orbit Torque Magnetic Random Access Memory for High-Density and Low-Power Embedded Application
Creators: name: Wu, Y. C.
name: Garello, K.
name: Kim, W.
name: Gupta, M.
name: Perumkunnil, M.
name: Kateel, V.
name: Couet, S.
name: Carpenter, R.
name: Rao, S.
name: Van Beek, S.
name: Sethu, K. K. Vudya
name: Yasin, F.
name: Crotti, D.
name: Kar, G. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Voltage-gate assisted spin-orbit torque (VGSOT) writing scheme combines the advantages from voltage control of magnetic anisotropy (VCMA) and spin-orbit torque (SOT) effects, enabling multiple benefits for magnetic random access memory (MRAM) applications. In this work, we give a complete description of VGSOT writing properties on perpendicular magnetic tunnel junction (pMTJ) devices, and we propose a detailed methodology for its electrical characterization. The impact of gate assistance on the SOT switching characteristics are investigated using electrical pulses down to 400ps. The VCMA coefficient (ξ) extracted from current switching scheme is found to be the same as that from the magnetic field switch method, which is in the order of 15fJ/Vm for the 80nm to 150nm devices. Moreover, as expected from the pure electronic VCMA effect, ξ is revealed to be independent of the writing speed and gate length. We observe that SOT switching current characteristics are modified linearly with gate voltage (V_g), similar as for the magnetic properties. We interpret this linear behavior as the direct modification of perpendicular magnetic anisotropy (PMA) and nucleation energy induced by VCMA. At V_g = 1V, the SOT write current is decreased by 25%, corresponding to a 45% reduction in total energy down to 30fJ/bit at 400ps speed for the 80nm devices used in this study. Further, the device-scaling criteria are proposed, and we reveal that VGSOT scheme is of great interest as it can mitigate the complex material requirements of achieving high SOT and VCMA parameters for scaled MTJs. Finally, how that VGSOT-MRAM can enable high-density arrays close to two terminal geometries, with high-speed performance and low-power operation, showing great potential for embedded memories as well as in-memory computing applications at advanced technology nodes.
Non--Localizability of Electric Coupling and Gravitational Binding of Charged Objects
Creators: name: Corne, Matthew
name: Kheyfets, Arkady
name: Miller, Warner
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The energy--momentum tensor in general relativity contains only localized contributions to the total energy--momentum. Here, we consider a static, spherically symmetric object consisting of a charged perfect fluid. For this object, the total gravitational mass contains a non--localizable contribution of electric coupling (ordinarily associated with electromagnetic mass). We derive an explicit expression for the total mass which implies that the non--localizable contribution of electric coupling is not bound together by gravity, thus ruling out existence of the objects with pure Lorentz electromagnetic mass in general relativity.
description: 7 pages, no figures
Coulomb correlation effects in LaOFeAs: LDA+DMFT(QMC) study
Creators: name: Shorikov, A. O.
name: Korotin, M. A.
name: Streltsov, S. V.
name: Skornyakov, S. L.
name: Korotin, D. M.
name: Anisimov, V. I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Effects of Coulomb correlation on LaOFeAs electronic structure have been investigated by LDA+DMFT(QMC) method. The calculation results show that LaOFeAs is in the regime of intermediate correlation strength with significant part of the spectral density moved from the Fermi energy to Hubbard bands. However the system is not on the edge of metal insulator-transition because increase of the Coulomb interaction parameter value from $U$=4.0 eV to $U$=5.0 eV did not result in insulator state. Correlations affect different d-orbitals not in the same way. $t_{2g}$ states ($xz,yz$ and $x^2-y^2$ orbitals) have higher energy due to crystal filed splitting and are nearly half-filled. Their spectral functions have pseudogap with Fermi energy position on the higher sub-band slope. Lower energy $e_g$ set of d-orbitals ($3z^2-r^2$ and $xy$) have significantly larger occupancy values with typically metallic spectral functions.
description: 4 pages, 4 figures
Additional file 1 of Socioeconomic disadvantage and ethnicity are associated with large differences in children’s working memory ability: analysis of a prospective birth cohort study following 13,500 children
Creators: name: Mooney, Kate E.
name: Pickett, Kate E.
name: Shire, Katy
name: Allen, Richard J.
name: Waterman, Amanda H.
Publisher: name: figshare
Year: 2022
Subjects: subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1. Working memory scores by age (regression analysis).
pH sensitive peptide functionalized nanoparticles for co-delivery of erlotinib and DAPT to restrict the progress of triple negative breast cancer
Creators: name: Wan, Xu
name: Liu, Chaoqian
name: Lin, Yinan
name: Fu, Jie
name: Lu, Guohong
name: Lu, Zhengmao
Publisher: name: Taylor & Francis
Year: 2019
Subjects: Biophysics
Biochemistry
Space Science
Medicine
Cell Biology
Molecular Biology
Pharmacology
Biotechnology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Cancer

description: Although a variety of drug delivery strategies have been designed for enhancing the treatment of Triple negative breast cancer (TNBC), combating with TNBCs is still dramatically challenged by the selection of appropriate therapeutic targets and insufficient tumor accumulation or inner penetration of chemotherapeutics. To address these issues, the classical EGFR-inhibitor, erlotinib (EB), was selected as the model drug here and PLA-based nano-platform (NP-EB) was prepared for tumor site drug delivery. Given the significant role of Notch-EGFR interplay in raising severe resistance to EGFR inhibition of EB, gamma secretase inhibitor (GSI)-DAPT was further entrapped into the core of nanoparticles to inhibit the activation of Notch signaling (NP-EB/DART). For achieving the goal of tumor targeting drug delivery, we developed a new peptide CF and decorating it on the surface of EB/DART-dual loaded nanoparticles (CF-NP-EB/DART). Such CF peptide was designed by conjugating two separated peptide CREKA, tumor-homing peptide, and F3, cell penetrating peptide, to together via a pH-sensitive hydrazone bond. By this way, the tumor unspecific property of F3 was sealed and significantly reduced the site effects. However, after the nanoparticles reach the tumor site, the pH-sensitive linkage can be broken down by the unique acidic environment of tumor, and subsequently discovered the F3 peptide to penetrate into tumor cells.
Additional file 2 of Socioeconomic disadvantage and ethnicity are associated with large differences in children’s working memory ability: analysis of a prospective birth cohort study following 13,500 children
Creators: name: Mooney, Kate E.
name: Pickett, Kate E.
name: Shire, Katy
name: Allen, Richard J.
name: Waterman, Amanda H.
Publisher: name: figshare
Year: 2022
Subjects: subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 2. Working memory scores by subjective financial status within White British and Pakistani groups.
Tamarida differens Taiti & Ferrara 2004
Creators: name: Taiti, Stefano
name: Checcucci, Ilaria
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Isopoda
Trachelipodidae
Tamarida
Tamarida differens

description: Tamarida differens Taiti & Ferrara, 2004 Tamarida differens Taiti & Ferrara, 2004: 277, figs 44, 45, pl. 15. Material examined. Socotra: 3 ♀♀, 1 juv., Qeysoh, 12°39'32"N 53°28'12"E, under palm logs in meadow, 20.I.2003, leg. S.Taiti, MZUF-9244; 2 ♁♁, 4 ♀♀, same locality, in palm grove, 20.I.2003, leg. S. Taiti, MZUF-9246; 5 ♀♀, same data, NHCY (MZUF); 1 ♁, 1 ♀, Wadi Ayhaft, 12°36'14.7"N 53°59'31.1"E, ca. 240 m, under stones near wadi, 21.I.2003, leg. S. Taiti, MZUF-9247; 2 ♁♁, 5 ♀♀, Lem-chegeranit, 12°35'04.5"N 53°30'49.3"E, under stones in meadow near pond, 12.I.2003, leg. S. Taiti, MZUF-9245; 3 ♁♁, 5 ♀♀, same data, NHCY (MZUF). Distribution. Species endemic to Socotra Island. Family Agnaridae Genus Pseudoagnara Taiti & Ferrara, 2004 Type-species: Pseudoagnara wraniki Taiti & Ferrara, 2004 by original designation.
description: Published as part of Taiti, Stefano & Checcucci, Ilaria, 2009, New species and records of terrestrial Isopoda (Crustacea, Oniscidea) from Socotra Island, Yemen, pp. 73-103 in ZooKeys 31 (3) on page 95, DOI: 10.3897/zookeys.31.140, http://zenodo.org/record/576582
description: {"references": ["Taiti S, Ferrara F (2004) The terrestrial Isopoda (Crustacea: Oniscidea) of the Socotra Archipelago. Fauna of Arabia 20: 211 - 325."]}
Deciphering the Origin of Ionized Gas in IC 1459 with VLT/MUSE
Creators: name: Mulcahey, Celia R.
name: Prichard, Laura J.
name: Krajnovic, Davor
name: Jorgenson, Regina A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: IC 1459 is an early-type galaxy (ETG) with a rapidly counter-rotating stellar core, and is the central galaxy in a gas-rich group of spirals. In this work, we investigate the abundant ionized gas in IC 1459 and present new stellar orbital models to connect its complex array of observed properties and build a more complete picture of its evolution. Using the Multi-Unit Spectroscopic Explorer (MUSE), the optical integral field unit (IFU) on the Very Large Telescope (VLT), we examine the gas and stellar properties of IC 1459 to decipher the origin and powering mechanism of the galaxy's ionized gas. We detect ionized gas in a non-disk-like structure rotating in the opposite sense to the central stars. Using emission-line flux ratios and velocity dispersion from full-spectral fitting, we find two kinematically distinct regions of shocked emission-line gas in IC 1459, which we distinguished using narrow ($σ$ $\leq$ 155 km s$^{-1}$) and broad ($σ$ $>$ 155 km s$^{-1}$) profiles. Our results imply that the emission-line gas in IC 1459 has a different origin than that of its counter-rotating stellar component. We propose that the ionized gas is from late-stage accretion of gas from the group environment, which occurred long after the formation of the central stellar component. We find that shock heating and AGN activity are both ionizing mechanisms in IC 1459 but that the dominant excitation mechanism is by post-asymptotic giant branch stars from its old stellar population.
description: Accepted for publication in MNRAS. 12 pages, 10 figures
NET4Age-Friendly - User centred design on Age-Friendly Environments
Creators: name: Dantas, Carina
Publisher: name: Zenodo
Year: 2024

description: This report presents a summary of the existing knowledge and a critical assessment of practices in inclusive design of innovative solutions for the implementation of Smart Healthy Age-Friendly Environments (SHAFE), as well as recommendations for the future, in line with the objectives defined for the Working Group 3 of NET4Age-Friendly.

In this document, the process of creation, development and mapping of a Matrix to synthesize existing knowledge and critically assess practices of inclusive design of innovative solutions for SHAFE is detailed. The Matrix was open to all WG1 members and gathered information on methods, definitions, examples of use, and initiatives that align with user-centred design principles of inclusion, accessibility, usability, and engagement.
LargeEA: Aligning Entities for Large-scale Knowledge Graphs
Creators: name: Ge, Congcong
name: Liu, Xiaoze
name: Chen, Lu
name: Zheng, Baihua
name: Gao, Yunjun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Entity alignment (EA) aims to find equivalent entities in different knowledge graphs (KGs). Current EA approaches suffer from scalability issues, limiting their usage in real-world EA scenarios. To tackle this challenge, we propose LargeEA to align entities between large-scale KGs. LargeEA consists of two channels, i.e., structure channel and name channel. For the structure channel, we present METIS-CPS, a memory-saving mini-batch generation strategy, to partition large KGs into smaller mini-batches. LargeEA, designed as a general tool, can adopt any existing EA approach to learn entities' structural features within each mini-batch independently. For the name channel, we first introduce NFF, a name feature fusion method, to capture rich name features of entities without involving any complex training process. Then, we exploit a name-based data augmentation to generate seed alignment without any human intervention. Such design fits common real-world scenarios much better, as seed alignment is not always available. Finally, LargeEA derives the EA results by fusing the structural features and name features of entities. Since no widely-acknowledged benchmark is available for large-scale EA evaluation, we also develop a large-scale EA benchmark called DBP1M extracted from real-world KGs. Extensive experiments confirm the superiority of LargeEA against state-of-the-art competitors.
description: To appear in VLDB 2022
Observation of chi_cJ radiative decays to light vector mesons
Creators: name: CLEO Collaboration
name: Bennett, J. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using a total of 2.74 x 10^7 decays of the psi(2S) collected with the CLEO-c detector, we present a study of chi_cJ -> gamma V, where V = rho^0, omega, phi. The transitions chi_c1 -> gamma rho^0 and chi_c1 -> gamma omega are observed with B(chi_c1 -> gamma rho^0) = (2.43 +- 0.19 +- 0.22) x 10^-4 and B(chi_c1 -> gamma omega) = (8.3 +- 1.5 +- 1.2) x 10^-5. In the chi_c1 -> gamma rho^0 transition, the final state meson is dominantly longitudinally polarized. Upper limits on the branching fractions of other chi_cJ states to light vector mesons are presented.
description: 10 pages, available through http://www.lns.cornell.edu/public/CLNS/
A survey of IRAS young stellar object candidates. Searching for large-scale Herbig-Haro objects
Creators: name: López, Rosario
name: Riera, Angels
name: Estalella, Robert
name: Gómez, Gabriel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Jets and outflows are associated with young stellar objects across the stellar mass spectrum, from brown dwarf protostars to massive, Ae/Be stars. Frequently, the jet morphology is spatially discontinuous because of the temporal variability of the ejection from the driving source. Images covering a wide field of view around the jet driving-source are useful to map the large-scale jet emission and to explore the mass ejection history. The aim of this work was to search for large-scale optical Herbig-Haro (HH) objects lying in a wide field around a sample of IRAS sources, candidates to trace young stellar objects. Deep, narrow-band images through the H$α$ and [SII] emission lines, and through an off-line continuum filter, covering a wide ($\sim15'$) field around the IRAS targets were acquired. The images in the three filters were analyzed to identify shock-excited line emission (i.e., HH) in contrast to scattered line emission. New images of a sample of fifteen IRAS sources, obtained in an homogeneous way are presented. HH emission was detected in six fields, and the astrometry of the knot features is given. The nature of the extended emission as scattered emission around nine of the IRAS targets is confirmed. For seven IRAS sources, with unclear optical counterpart, a more plausible counterpart is proposed. A refined value of the source distance is reported for seven targets. An update of the main data available for each of the sampled fields, including images from public data archives, is also presented.
description: 20 pages. 49 figures Accepted to be published in A&A
Study in a beam test of the resolution of a Micromegas TPC with standard readout pads
Creators: name: Arogancia, D. C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The results of a beam test performed at the KEK PS in June 2005 are presented. Drift properties of an argon-isobutane mixture have been accurately measured and compared with predictions at magnetic fields between 0 and 1 Tesla. The r.m.s. point resolution of a padrow is compared with simulation and with an analytical calculation. The fundamental limitations due to detector geometry and gas properties are reviewed and the measured performances of the detector are found to be close to this limit. A numerical application to the case of a Linear Collider TPC is presented.
description: To be submitted to NIM A, 25 pages
Genome landscapes and bacteriophage codon usage
Creators: name: Lucks, Julius B.
name: Nelson, David R.
name: Kudla, Grzegorz
name: Plotkin, Joshua B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Genomics (q-bio.GN)
subject: FOS: Biological sciences

description: Across all kingdoms of biological life, protein-coding genes exhibit unequal usage of synonmous codons. Although alternative theories abound, translational selection has been accepted as an important mechanism that shapes the patterns of codon usage in prokaryotes and simple eukaryotes. Here we analyze patterns of codon usage across 74 diverse bacteriophages that infect E. coli, P. aeruginosa and L. lactis as their primary host. We introduce the concept of a `genome landscape,' which helps reveal non-trivial, long-range patterns in codon usage across a genome. We develop a series of randomization tests that allow us to interrogate the significance of one aspect of codon usage, such a GC content, while controlling for another aspect, such as adaptation to host-preferred codons. We find that 33 phage genomes exhibit highly non-random patterns in their GC3-content, use of host-preferred codons, or both. We show that the head and tail proteins of these phages exhibit significant bias towards host-preferred codons, relative to the non-structural phage proteins. Our results support the hypothesis of translational selection on viral genes for host-preferred codons, over a broad range of bacteriophages.
description: 9 Color Figures, 5 Tables, 53 References
Phase separation in fermionic systems with particle-hole asymmetry
Creators: name: Montorsi, Arianna
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We determine the ground-state phase-diagram of a Hubbard Hamiltonian with correlated hopping, which is asymmetric under particle-hole transform. By lowering the repulsive Coulomb interaction U at appropriate filling and interaction parameters, the ground state separates into a hole and an electron conducting phases: two different wave vectors characterize the system and charge-charge correlations become incommensurate. By further decreasing U another transition occurs at which the hole conducting region becomes insulating, and conventional phase separation takes place. Finally, for negative U the whole system eventually becomes a paired insulator. It is speculated that such behavior could be at the origin of the incommensurate superconducting phase recently discovered in the 1D Hirsch model. The exact phase boundaries are calculated in one dimension.
description: 4 pages, 2 figures
S-Duality of Boundary Conditions In N=4 Super Yang-Mills Theory
Creators: name: Gaiotto, Davide
name: Witten, Edward
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: By analyzing brane configurations in detail, and extracting general lessons, we develop methods for analyzing S-duality of supersymmetric boundary conditions in N=4 super Yang-Mills theory. In the process, we find that S-duality of boundary conditions is closely related to mirror symmetry of three-dimensional gauge theories, and we analyze the IR behavior of large classes of quiver gauge theories.
description: 170 pp
A new method for obtaining a Born cross section using visible cross section data from $e^+e^-$ colliders
Creators: name: Gribanov, S. S.
name: Popov, A. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In this article, we propose a new method for obtaining a Born cross section using visible cross section data. It is assumed that the initial state radiation is taken into account in a visible cross section, while in a Born cross section this effect is ommited. Since the equation that connects Born and visible cross sections is an integral equation of the first kind, the problem of finding its numerical solution is ill-posed. Various regularization-based approaches are often used to solve ill-posed problems, since direct methods usually do not lead to an acceptable result. However, in this article it is shown that a direct method can be successfully used to numerically solve the considered equation under the condition of a small beam energy spread and uncertainty. This naive method is based on finding a numerical solution to the integral equation by reducing it to a system of linear equations. The naive method works well because the kernel of the integral operator is a rapidly decreasing function of the variable $x$. This property of the kernel leads to the fact that the condition number of the matrix of the system of linear equations is of the order of unity, which makes it possible to neglect the ill-posedness of the problem when the above condition is satisfied. The advantages of the naive method are its model independence and the possibility of obtaining the covariance matrix of a Born cross section in a simple way.
Testing modified (Horndeski) gravity by combining intrinsic galaxyalignments with cosmic shear
Creators: name: Reischke, Robert
name: Bosca, Victor
name: Tugendhat, Tim
name: Schäfer, Björn Malte
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the impact of modified gravity of the Horndeski class, on intrinsic shape correlations in cosmic shear surveys. As intrinsic shape correlations (IAs) are caused by tidal gravitational fields acting on galaxies as a collection of massive non-relativistic test particles, they are only sensitive to the gravitational potential, which forms in conjunction with the curvature perturbation. In contrast, the cosmic shear signal probes the sum of these two, i.e. both Bardeen-potentials. Combining these probes therefore constitutes a test of gravity, derived from a single measurement. Focusing on linear scales and alignments of elliptical galaxies, we study the impact on inference of the braiding $\hatα_B$ and the time evolution of the Planck mass $\hatα_M$ by treating IAs as a genuine signal contributing to the overall ellipticity correlation. We find that for \textsc{Euclid}, IAs can help to improve constraints on modified gravity of the Horndeski-class by 10 per cent if the alignment parameter needed for the linear alignment model is provided by simulations. If, however, the IA needs to be self calibrated, all of the sensitivity is put into the inference of the alignment strength $D$ since there is a very strong correlation with the evolution of the Planck mass. Thus diminishing the benefit of IA for probing modified gravitational theories. While the present paper shows results mainly for modified gravity parameters, similar deductions can be drawn for the investigation of anisotropic stresses, parameterised modifications to the Poisson-equation, the phenomenology of gravitational slip and to breaking degeneracies in a standard cosmology.
description: 7 pages, 2 figures
Pseudoagnara wraniki Taiti & Ferrara 2004
Creators: name: Taiti, Stefano
name: Checcucci, Ilaria
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Isopoda
Agnaridae
Pseudoagnara
Pseudoagnara wraniki

description: Pseudoagnara wraniki Taiti & Ferrara, 2004 Pseudoagnara wraniki Taiti & Ferrara, 2004: 280, figs 46–48, pl. 16. Material examined. Socotra: 3 ♁♁, 5 ♀♀, 2 juvs, Arresh, Diehamt, 12°35'26.8"N 53°48'54.6"E, 18 m, 11.I.2003, leg. S. Taiti, MZUF-9248; 2 ♁♁, 10 ♀♀, same data, NHCY (MZUF); 4 ♁♁, 8 ♀♀, ca. 15km E of Qalansiya, 12°37'34"N 53°36'30"E, under stones, 20.I.2003, leg. S. Taiti, MZUF-9249; 5 ♁♁, 5 ♀♀, same data, NHCY (MZUF); 1 ♁, 1 ♀, Wadi Ayhaft, 12°36'54.5"N 53°57'26.5"E, ca. 100 m, left side, limestone, under stones, 19.I.2003, leg. S. Taiti, MZUF-9251; 1 ♁, Wadi Ayhaft, 12°36'38.0"N 53°58'42.9"E, ca. 170 m, limestone, under stones, 21.I.2003, leg. S. Taiti, MZUF-9250; 1 ♁, 3 ♀♀, along path to Hoq Cave, 12°35'40.0"N 54°21'00.6"E, under stones, 170 m, 14.I.2003, leg. S. Taiti, MZUF-9252. Distribution. Species endemic to Socotra Island.
description: Published as part of Taiti, Stefano & Checcucci, Ilaria, 2009, New species and records of terrestrial Isopoda (Crustacea, Oniscidea) from Socotra Island, Yemen, pp. 73-103 in ZooKeys 31 (3) on page 95, DOI: 10.3897/zookeys.31.140, http://zenodo.org/record/576582
description: {"references": ["Taiti S, Ferrara F (2004) The terrestrial Isopoda (Crustacea: Oniscidea) of the Socotra Archipelago. Fauna of Arabia 20: 211 - 325."]}
Kleiner Sprachatlas des Landkreises Böblingen
Creators: name: Bühler, Rudolf
name: Klausmann, Hubert
Publisher: name: Universität Tübingen
Year: 2019
Subjects: subject: Dialekt , Schwäbisch , Böblingen , Landkreis Böblingen , Mundart
subject: 400
subject: 430

description: Ziel dieses „Kleinen Sprachatlas des Landkreises Böblingen“ ist es, die Forschungsergebnisse für eine breite, interessierte Öffentlichkeit zu präsentieren. In ihm sind nicht nur die heute im Landkreis Böblingen gesprochenen Dialekte erfasst und in zahlreichen anschaulichen Sprachkarten dargestellt. Auch viele Einwohnerinnen und Einwohner der einzelnen Gemeinden selbst kommen zu Wort und zeigen, dass unsere Mundarten nicht nur Thema einer vergangenen Zeit sind, sondern selbstverständlicher Teil einer lebendigen regionalen Kultur.
Quantum critical scaling of the geometric tensors
Creators: name: Venuti, Lorenzo Campos
name: Zanardi, Paolo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Berry phases and the quantum-information theoretic notion of fidelity have been recently used to analyze quantum phase transitions from a geometrical perspective. In this paper we unify these two approaches showing that the underlying mechanism is the critical singular behavior of a complex tensor over the Hamiltonian parameter space. This is achieved by performing a scaling analysis of this quantum geometric tensor in the vicinity of the critical points. In this way most of the previous results are understood on general grounds and new ones are found. We show that criticality is not a sufficient condition to ensure superextensive divergence of the geometric tensor, and state the conditions under which this is possible. The validity of this analysis is further checked by exact diagonalization of the spin-1/2 XXZ Heisenberg chain.
description: Typos corrected
A survey of the Wolf-Rayet population of the barred, spiral galaxy NGC 1313
Creators: name: Hadfield, L. J.
name: Crowther, P. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a VLT/FORS1 survey of Wolf-Rayet (WR) stars in the spiral galaxy NGC 1313. In total, 94 WR candidate sources have been identified from narrow-band imaging. Of these, 82 have been spectroscopically observed, for which WR emission features are confirmed in 70 cases, one of which also exhibits strong nebular HeII 4686 emission. We also detect strong nebular HeII 4686 emission within two other regions of NGC 1313, one of which is a possible supernova remnant. Nebular properties confirm that NGC 1313 has a metal-content log(O/H)+12=8.23+/-0.06, in good agreement with previous studies. From continuum subtracted Halpha images we infer a global star formation rate of 0.6 Msun/yr. Using template LMC WR stars, spectroscopy reveals that NGC 1313 hosts a minimum of 84 WR stars. Our census comprises 51 WN stars, including a rare WN/C transition star plus 32 WC stars. In addition, we identify one WO star which represents the first such case identified beyond the Local Group. The bright giant HII region PES 1, comparable in Halpha luminosity to NGC 595 in M 33, is found to host a minimum of 17 WR stars. The remaining photometric candidates generally display photometric properties consistent with WN stars, such that we expect a global WR population of ~115 stars with N(WR)/N(O)~0.01 and N(WC)/N(WN)~0.4.
description: Accepted for publication in MNRAS. Finding charts omitted, full version available by anonymous ftp (ftp: hydra.shef.ac.uk/pub/lh/ngc1313-fullversion.pdf
Charged Dilaton, Energy, Momentum and Angular-Momentum in Teleparallel Theory Equivalent to General Relativity
Creators: name: Nashed, Gamal Gergess Lamee
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We apply the energy-momentum tensor to calculate energy, momentum and angular-momentum of two different tetrad fields. This tensor is coordinate independent of the gravitational field established in the Hamiltonian structure of the teleparallel equivalent of general relativity (TEGR). The spacetime of these tetrad fields is the charged dilaton. Our results show that the energy associated with one of these tetrad fields is consistent, while the other one does not show this consistency. Therefore, we use the regularized expression of the gravitational energy-momentum tensor of the TEGR. We investigate the energy within the external event horizon using the definition of the gravitational energy-momentum.
description: 22 Pages Latex
Low-dimensional Supersymmetric Lattice Models
Creators: name: Bergner, Georg
name: Kaestner, Tobias
name: Uhlmann, Sebastian
name: Wipf, Andreas
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study and simulate N=2 supersymmetric Wess-Zumino models in one and two dimensions. For any choice of the lattice derivative, the theories can be made manifestly supersymmetric by adding appropriate improvement terms corresponding to discretizations of surface integrals. In one dimension, our simulations show that a model with the Wilson derivative and the Stratonovitch prescription for this discretization leads to far better results at finite lattice spacing than other models with Wilson fermions considered in the literature. In particular, we check that fermionic and bosonic masses coincide and the unbroken Ward identities are fulfilled to high accuracy. Equally good results for the effective masses can be obtained in a model with the SLAC derivative (even without improvement terms). In two dimensions we introduce a non-standard Wilson term in such a way that the discretization errors of the kinetic terms are only of order O(a^2). Masses extracted from the corresponding manifestly supersymmetric model prove to approach their continuum values much quicker than those from a model containing the standard Wilson term. Again, a comparable enhancement can be achieved in a theory using the SLAC derivative.
description: 54 pages, 19 figures, v2: typos corrected, discussion of O(a^4) corrections improved, two references added, version to appear in Annals of Physics
Radiation Pressure Acceleration of Thin Foils with Circularly Polarized Laser Pulses
Creators: name: Robinson, A. P. L.
name: Zepf, M.
name: Kar, S.
name: Evans, R. G.
name: Bellei, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A new regime is described for Radiation Pressure Acceleration of a thin foil by an intense laser beam of above 10^20 W/cm^2. Highly monoenergetic proton beams extending to GeV energies can be produced with very high efficiency using circularly polarized light. The proton beams have a very small divergence angle (less than 4 degrees). This new method allows the construction of ultra-compact proton and ion accelerators with ultra-short particle bursts.
Polymer-induced microcolony compaction in early biofilms: a computer simulation study
Creators: name: Lobo-Cabrera, Francisco Javier
name: Patti, Alessandro
name: Govantes, Fernando
name: Cuetos, Alejandro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Microscopic organisms, such as bacteria, have the ability of colonizing surfaces and developing biofilms that can determine diseases and infections. Most bacteria secrete a significant amount of extracellular polymer substances that are relevant for biofilm stabilization and growth. In this work, we apply computer simulation and perform experiments to investigate the impact of polymer size and concentration on early biofilm formation and growth. We observe as bacterial cells formed loose, disorganized clusters whenever the effect of diffusion exceeded that of cell growth and division. Addition of model polymeric molecules induced particle self-assembly and aggregation to form compact clusters in a polymer size- and concentration-dependent fashion. We also find that large polymer size or concentration lead to the development of intriguing stripe-like and dendritic colonies. The results obtained by Brownian dynamic simulation closely resemble the morphologies that we experimentally observe in biofilms of a Pseudomonas Putida strain with added polymers. The analysis of the Brownian dynamic simulation results suggests the existence of a threshold polymer concentration that distinguishes between two growth regimes. Below this threshold, the main force driving polymer-induced compaction is hindrance of bacterial cell diffusion, while collective effects play a minor role. Above this threshold, especially for large polymers, polymer-induced compaction is a collective phenomenon driven by depletion forces. Well above this concentration threshold, severely limited diffusion drives the formation of filaments and dendritic colonies.
Higher-order topological Anderson insulators in quasicrystals
Creators: name: Peng, Tan
name: Hua, Chun-Bo
name: Chen, Rui
name: Liu, Zheng-Rong
name: Xu, Dong-Hui
name: Zhou, Bin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The disorder effects on higher-order topological phases in periodic systems have attracted much attention. However, in aperiodic systems, such as quasicrystalline systems, the interplay between disorder and higher-order topology is still unclear. In this paper, we investigate the effects of disorder on two types of second-order topological insulators, including a quasicrystalline quadrupole insulator and a modified quantum spin Hall insulator, in a two-dimensional Amman-Beenker tiling quasicrystalline lattice. We demonstrate that the higher-order topological insulators are robust against weak disorder in both models. More striking, the disorder-induced higher-order topological insulators called higher-order topological Anderson insulators are found at a certain region of disorder strength in both models. Our paper extends the study of the interplay between disorder and higher-order topology to quasicrystalline systems.
Proposal for a Mesoscopic Optical Berry-Phase Interferometer
Creators: name: Shelykh, I. A.
name: Pavlovic, G.
name: Solnyshkov, D. D.
name: Malpuech, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose a novel spin-optronic device based on the interference of polaritonic waves traveling in opposite directions and gaining topological Berry phase. It is governed by the ratio of the TE-TM and Zeeman splittings, which can be used to control the output intensity. Because of the peculiar orientation of the TE-TM effective magnetic field for polaritons, there is no analogue of the Aharonov- Casher phase shift existing for electrons.
description: 4 pages
Wind measurements with drone-based wind lidars
Creators: name: Vasiljević, Nikola
name: Harris, Michael
name: Pedersen, Anders Tegtmeier
name: Thorsen, Gunhild Rolighed
name: Rassmusen, Michael
name: Pedersen, Claus Brian Munk
name: Hansen, Per
name: Pitter, Mark
name: Harris, Jane
name: Bajpai, Kieran
name: Courtney, Michael
Publisher: name: Zenodo
Year: 2019
Subjects: wind lidar
drone
drone based wind lidar

description: In this talk we present the preliminary results of the proof of concept (POC) stage of a drone-based wind lidar system development. For many years, the wind energy community has been in the quest for cost-effective alternatives to wind measurements from tall masts. A potential solution lays in the application of drones as platforms for wind lidars in which the drone would be used to position the lidar in vicinity of the measurement points and steer the outgoing laser beam. By doing this, the wind lidar can be significantly simplified leading to the overall cost reductions. To put on trial the proposed solution we have built a proof of concept (POC) drone-lidar system. The system consisted of a dual-telescope CW lidar system built by ZX Lidars, and off-the-shelf drone and gimbal system. The selected drone and gimbal system are typically used in the motion picture industry, while the lidar was optimized for wind tunnel measurements or for turbine blade mounting, thus the telescopes are separated from the rest of the lidar. For the POC we mounted only the telescopes to the gimbal which were placed orthogonal to each other (i.e., 90 degrees opening angle). The telescopes were connected to the lidar located on the ground using 100-m long optical fibers. To test the POC drone-lidar system we hovered the drone next to mast-mounted sonic anemometers at the Risø test center. The preliminary results of the intercomparison between the measurements derived from the POC system and one of the sonic anemometers show good agreement. The POC stage results confirmed that the drone-lidar systems could be a potential measurement solution that the community has been looking for.
Raman-scattered O VI features in the symbiotic nova RR Telescopii
Creators: name: Heo, Jeong-Eun
name: Lee, Hee-Won
name: Angeloni, Rodolfo
name: Palma, Tali
name: Di Mille, Francesco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: RR Tel is an interacting binary system in which a hot white dwarf (WD) accretes matter from a Mira-type variable star via gravitational capture of its stellar wind. This symbiotic nova shows intense Raman-scattered O VI 1032Å and 1038Å features at 6825Å and 7082Å. We present high-resolution optical spectra of RR Tel taken in 2016 and 2017 with the Magellan Inamori Kyocera Echelle (MIKE) spectrograph at Magellan-Clay telescope, Chile. We aim to study the stellar wind accretion in RR Tel from the profile analysis of Raman O VI features. With an asymmetric O VI disk model, we derive a representative Keplerian speed of $> 35{\rm km~s^{-1}}$, and the corresponding scale < 0.8 au. The best-fit for the Raman profiles is obtained with a mass loss rate of the Mira ${\dot M}\sim2\times10^{-6}~{\rm M_{\odot}~yr^{-1}}$ and a wind terminal velocity $v_{\infty}\sim 20~{\rm km~s^{-1}}$. We compare the MIKE data with an archival spectrum taken in 2003 with the Fibre-fed Extended Range Optical Spectrograph (FEROS) at the MPG/ESO 2.2m telescope. It allows us to highlight the profile variation of the Raman O VI features, indicative of a change in the density distribution of the O VI disk in the last two decades. We also report the detection of O VI recombination lines at 3811Å and 3834Å, which are blended with other emission lines. Our profile decomposition suggests that the recombination of O VII takes place nearer to the WD than the O VI 1032Å and 1038Å emission region.
description: 13 pages, 9 figures, 6 tables, accepted for publication in ApJ
Structured Light Projection-based single-shot transport of intensity phase imaging for quantitative diagnostics of high-speed flows
Creators: name: Medhi, Biswajit
name: Reddy, K. P. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A method for quantitative estimation of density in a high-speed flow field is presented, which uses a structured-light beam probe to interrogate the region of interest (ROI). Wavefront distortion suffered by the interrogating beam as it passes through the shock-induced flow field is investigated. Dedicate camera optics is used to measure the cross-sectional intensities of the exiting wavefront at two different planes, simultaneously. A technique is proposed that uses the lateral displacement of the structured light pattern on both the planes to estimate the axial intensity derivative, dI/dz, which is the input for the transport-of intensity equation (TIE) for phase estimation. By doing this, the need for small defocused distance, dz is avoided in experiments and hence the demand for a low f/# imaging system is alleviated, and now larger dz is admissible as the intensity derivative is not estimated through the conventional finite difference (FD) approximation. The recovered phase from TIE is used as an input to phase tomography algorithm to obtain the refractive index followed by density distributions in the flow field quantitatively. The proposed technique is verified through experiments conducted in hypersonic shock tunnel for flow Mach No. of 8.5. Estimated cross-sectional densities of the flow field around the aerodynamic test model are presented and compared with the numerically estimated values, which shows good agreement.