cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Universal conductance fluctuations in three dimensional metallic single crystals of Si
Creators: name: Ghosh, Arindam
name: Raychaudhuri, A. K.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: In this paper we report the measurement of conductance fluctuations in single crystals of Si made metallic by heavy doping (n \approx 2-2.5n_c, n_c being critical composition at Metal-Insulator transition). Since all dimensions (L) of the samples are much larger than the electron phase coherent length L_ϕ(L/L_ϕ\sim 10^3), our system is truly three dimensional. Temperature and magnetic field dependence of noise strongly indicate the universal conductance fluctuations (UCF) as predominant source of the observed magnitude of noise. Conductance fluctuations within a single phase coherent region of L_ϕ^3 was found to be saturated at \approx (e^2/h)^2. An accurate knowledge of the level of disorder, enables us to calculate the change in conductance δG_1 due to movement of a single scatterer as δG_1 \sim e^2/h, which is \sim 2 orders of magnitude higher than its theoretically expected value in 3D systems.
description: Text revised version. 4 eps figs unchanged
Theoretical analysis of screened many-body electrostatic interactions between charged polarizable particles
Creators: name: Lindgren, Eric B.
name: Quan, Chaoyu
name: Stamm, Benjamin
Publisher: name: arXiv
Year: 2018
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: This paper builds on two previous works, Lindgren et al. J. Comp. Phys. 371, 712-731 (2018) and Quan et al. arXiv:1807.05384 (2018), to devise a new method to solve the problem of calculating electrostatic interactions in a system composed by many dielectric particles, embedded in a homogeneous dielectric medium, which in turn can also be permeated by charge carriers. The system is defined by the charge, size, position and dielectric constant of each particle, as well as the dielectric constant and Debye length of the medium. The effects of taking into account the dielectric nature of the particles is explored in selected scenarios where the presence of electrolytes in the medium can significantly influence the total undergoing interactions. Description of the mutual interactions between all particles in the system as being truly of many-body nature reveals how such effects can effectively influence the magnitudes and even directions of the resulting forces, especially those acting on particles that have a null net charge. Particular attention is given to a situation that can be related to colloidal particles in an electrolyte solution, where it's shown that polarization effects alone can substantially raise or lower---depending on the dielectric contrast between the particles and the medium---the energy barrier that divides particle coagulation and flocculation regions, when an interplay between electrostatic and additional van der Waals forces is considered. Overall, the results suggest that for an accurate description of the type of system in question, it is essential to consider particle polarization if the separation between the interacting particles are comparable to or smaller than the Debye length of the medium.
description: 26 pages, 6 figures
How to renormalize coupled cluster theory
Creators: name: Sun, Z. H.
name: Bell, C. A.
name: Hagen, G.
name: Papenbrock, T.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Coupled cluster theory is an attractive tool to solve the quantum many-body problem because its singles and doubles (CCSD) approximation is computationally affordable and yields about 90% of the correlation energy. Capturing the remaining 10%, e.g. via including triples, is numerically expensive. Here we assume that short-range three-body correlations dominate and - following Lepage [How to renormalize the Schrödinger equation, arXiv:nucl-th/9706029] - that their effects can be included within CCSD by renormalizing the three-body contact interaction. We renormalize this contact in $^{16}$O and obtain accurate CCSD results for $^{24}$O, $^{20-34}$Ne, $^{40,48}$Ca, $^{78}$Ni, $^{90}$Zr, and $^{100}$Sn.
description: 7 pages, 4 figures
Detecting hyperbolic geometry in networks: why triangles are not enough
Creators: name: Michielan, Riccardo
name: Litvak, Nelly
name: Stegehuis, Clara
Publisher: name: arXiv
Year: 2022
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: In the past decade, geometric network models have received vast attention in the literature. These models formalize the natural idea that similar vertices are likely to connect. Because of that, these models are able to adequately capture many common structural properties of real-world networks, such as self-invariance and high clustering. Indeed, many real-world networks can be accurately modeled by positioning vertices of a network graph in hyperbolic spaces. Nevertheless, if one observes only the network connections, the presence of geometry is not always evident. Currently, triangle counts and clustering coefficients are the standard statistics to signal the presence of geometry. In this paper we show that triangle counts or clustering coefficients are insufficient because they fail to detect geometry induced by hyperbolic spaces. We therefore introduce a novel triangle-based statistic, which weighs triangles based on their strength of evidence for geometry. We show analytically, as well as on synthetic and real-world data, that this is a powerful statistic to detect hyperbolic geometry in networks.
description: 11 pages, 2 figures, 1 table
OILA, MAHALLA VA TA'LIM MASSASALARINING TA'LIM JARAYONIDAGI HAMKORLIKLARI
Creators: name: Turopova, Nigora
name: Ochildiyev, Qaxramon
Publisher: name: Zenodo
Year: 2024

description: Barchaga ma'lumki, ta'lim-tarbiya jarayonida oilaning, ota-onaning o‘rni, mahalla hamda ta'lim muassasalari o‘rni va ahamiyati beqiyos. Ayniqsa tarbiya sohasida oila o‘rni juda muhim. Ya'niki yoritmoqchi bo‘lgan ushbu maqolada aynan shu ta'lim va tarbiya borasida oila, mahalla hamda ta'lim muassasalari o‘rni hamda hamkorligi o‘rganilgan va yoritilgan.
Retrogression forming and reaging of two high strength aluminum alloys
Creators: name: Rader, Katherine Elizabeth
name: 0000-0002-5260-7598
Publisher: name: The University of Texas at Austin
Year: 2021
Subjects: Retrogression
Warm-forming
Aluminum
AA7075
AA6013

description: Retrogression forming and reaging is a new scientific approach to warm forming high strength aluminum alloys designed to produce automotive components with tensile strengths equivalent or superior to those of the T6 temper. Retrogression forming and reaging is investigated for two high strength aluminum alloys, AA7075-T6 and AA6013-T6. A retrogression and reaging response is identified in AA6013-T6. Retrogression and reaging behaviors are characterized in AA7075-T6 and AA6013-T6. The activation energies for retrogression are measured as 97 kJ/mol for AA7075-T6 and 160 kJ/mol for AA6013-T6. These data are used to develop a method for predicting appropriate times and temperatures for retrogression. The tensile behaviors of AA7075 and AA6013 are fully characterized across conditions appropriate for retrogression forming. Plastic flow of both materials at the warm temperatures examined is determined to be thermally activated. The activation energies of plastic flow are measured as 221 kJ/mol for AA7075 and 253 kJ/mol for AA6013. Ductility improves at elevated temperatures because fracture is delayed until after necking. Retrogression forming conditions are recommended that provide enhanced ductility and allow a single reaging heat treatment to restore strength to that of the T6 condition after forming. Forming experiments implement retrogression forming to produce parts with a geometry representative of automotive structural components. In-plane major strains of up to 22 % are measured in these parts. Accumulated reduced retrogression time is used to successfully design retrogression forming processes and enable a single reaging heat treatment to restore T6 strength. Retrogression forming followed by a single reaging heat treatment produced strengths equivalent or superior to those of the original T6 condition. Simultaneous plastic deformation during a retrogression heat treatment does not impede the ability of the recommended reaging heat treatment or the automotive paint-bake to restore T6 strength in AA7075. Reaging with the automotive paint-bake, a heat treatment process applied to the vehicle body-in-white, might be effective for restoring T6 strength in retrogression formed automotive components.
Gauge-Boson Pair Production at the LHC: Anomalous Couplings and Vector-Boson Scattering
Creators: name: Kuss, I.
name: Nuss, E.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compare vector boson fusion and quark antiquark annihilation production of vector boson pairs at the LHC and include the effects of anomalous couplings. Results are given for confidence intervals for anomalous couplings at the LHC assuming that measurements will be in agreement with the standard model. We consider all couplings of the general triple vector boson vertex and their correlations. In addition we consider a gauge invariant dimension-six extension of the standard model. Analytical results for the cross sections for quark antiquark annihilation and vector boson fusion with anomalous couplings are given.
description: 39 pages, LaTeX, including 11 postscript figures
Sensitivity of the intensity frontier experiments for neutrino and scalar portals: analytic estimates
Creators: name: Bondarenko, Kyrylo
name: Boyarsky, Alexey
name: Ovchynnikov, Maksym
name: Ruchayskiy, Oleg
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In recent years, a number of intensity-frontier experiments have been proposed to search for feebly interacting particles with a mass in the GeV range. We show analytically how the characteristic shape of the sensitivity regions of such experiments - upper and lower boundaries of the probed region, the maximal mass reach - depends on the parameters of the experiments, taking the SHiP and the MATHUSLA experiments as an example. We find a good agreement of our estimates with the results of the Monte Carlo simulations.
description: Journal version
Additional file 2: of Streamlined computational pipeline for genetic background characterization of genetically engineered mice based on next generation sequencing data
Creators: name: C. Farkas
name: F. Fuentes-Villalobos
name: B. Rebolledo-Jaramillo
name: F. Benavides
name: A. Castro
name: R. Pincheira
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Space Science
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 69999 Biological Sciences not elsewhere classified

description: Whole genome histogram of novel/existing variants in Gtf2ird1, Mecp2, Stc1, Itch, Sall2 and Hnrnpd/AUF-1 KO (RNA-Seq). RNA-Seq samples from Gtf2ird1, Mecp2, Stc1, Itch, Sall2 and Hnrnpd/AUF-1 WT and KO embryos were plotted, including WES samples from GSE115017 (GEO datasets) and E-MTAB-4181 (ArrayExpress). We binned the genomic coordinates of each chromosome every 10 million bases, and plotted the variants of each genotype/condition as frequency histograms according to these positions. In the case of RNA-Seq samples, blue bars represent average variants from WT embryos, and red bars represent the average variants from KO embryos in each case. The biological replicates were as follows: In the Sall2 KO, WT = 1 and KO = 3, in the Itch KO, WT = 2 and KO = 2 and in the four other studies, WT = 3 and KO = 3. (PDF 76 kb)
Dynamic Positioning System for low-cost ROV
Creators: name: Bartlett, Ben
name: Trslic, Petar
name: Santos, Matheus
name: Penica, Mihai
name: Riordan, James
name: DOOLY, GERARD
Publisher: name: University of Limerick
Year: 2024
Subjects: classificationCode: 40
subject: Engineering

description: This paper examines the use of low-cost sensors and systems for automated underwater navigation and control. A low-cost dynamic positioning system is developed and utilised as critical component for remotely operated vehicle (ROV) tasks such as general visual inspection and photogrammetric survey. Unlike unmanned aerial vehicles (UAVs) that can rely on costeffective and widely available GNSS sensors, this is not available to the subsea vehicle domain as these signals do not penetrate through water. In absence of GNSS capability, GPS-denied solutions such as dead-reckoning systems are required. This usually requires advanced motion and angle sensors with an array of aiding sensors. In this paper we use one of the world’s most affordable and high-performance ROVs, the BlueROV2, and with the integration of a waterlinked DVL we report on the development of a low-cost dynamic positioning system for BlueROV2. The paper showcases a low-cost solution for advanced function control subsea and demonstrates the capability and use of such ROVs in a wider range of underwater applications.
Comment on "Experimentally adjudicating between different causal accounts of Bell-inequality violations via statistical model selection"
Creators: name: Hance, Jonte R.
name: Hossenfelder, Sabine
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: In a recent paper (Phys. Rev. A 105, 042220 (2022)), Daley et al claim that some superdeterministic models are disfavoured against standard quantum mechanics, because such models overfit the statistics of a Bell-type experiment which the authors conducted. We add to the discussion by providing additional context about how few superdeterministic models fall into the category they analyse, and by emphasising that overfitting, while better as a measure of finetuning than other measures given in the literature, does not necessarily indicate a model is universally bad.
description: 4 pages, no figures. Published in Phys Rev A; matches published version
Assessment of permeability from well logs based on core calibration and simulation of mud-filtrate invasion
Creators: name: Salazar Luna, Jesus Maurcio
Publisher: name: The University of Texas at Austin
Year: 2004
Subjects: Permeability in wells
East Texas Bossier formation
Tight-gas sands
Mud-filtrate invasion

description: This thesis describes the application of a novel methodology to estimate permeability of clastic rock formations based on the physics of mud-filtrate invasion. The methodology assumes a key well with a complete suite of well logs and laboratory measurements of porosity, permeability, capillary pressure, and relative permeability. For additional wells in the same field, absolute permeability is estimated by matching the shallow resistivity well log with the electrical resistivity in the flushed zone yielded by the simulation of mud-filtrate invasion. We show the successful application of this methodology for the estimation of permeability in three wells penetrating the same over-pressured tight-gas sands of the East Texas Bossier formation. Conventional core porosity and permeability, along with capillary pressure, are used to determine rock types and flow units in the cored key well. Estimates of permeability based on a modified version of Winland’s equation agree with the measured permeability of the available rock-core samples. Simulations of mud-filtrate invasion account for the process of immiscible flow between mud-filtrate and in-situ gas as well as for salt mixing between mud-filtrate and connate water. Moreover, the simulations properly reproduce the effect of mudcake buildup along the borehole wall. Two-dimensional cross-sections of water saturation and salt concentration obtained from the simulations are used to calculate cross-sections of electrical resistivity. The latter are checked against the measured shallow, medium, and deep resistivity logs to calibrate time of invasion and Archie’s saturation and cementation exponents Based on the analysis in the key well (Well 1), a petrophysical assessment of flow units is performed in two nearby wells (Wells 2 and 3) within the same gas field. Initial Winland permeability values are progressively adjusted until the calculated cross-sections of electrical resistivity agree with the shallow array induction resistivity readings. For Well 2, the estimated permeability is equal to the initial guess, whereas for Well 3 the estimated permeability is approximately 50-80% higher than the initial guess. The permeability values estimated with the methodology described in this thesis are consistent not only with the petrophysical properties of the near-borehole region but also with the length of investigation and vertical resolution of wireline induction logs
Large Momentum Transfer Measurements of the Deuteron Elastic Structure Function A(Q^2) at Jefferson Laboratory
Creators: name: The Jefferson Lab Hall A Collaboration
name: Alexa, L. C
Publisher: name: arXiv
Year: 1998
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The deuteron elastic structure function A(Q^2) has been extracted in the Q^2 range 0.7 to 6.0 (GeV/c)^2 from cross section measurements of elastic electron-deuteron scattering in coincidence using the Hall A Facility of Jefferson Laboratory. The data are compared to theoretical models based on the impulse approximation with inclusion of meson-exchange currents, and to predictions of quark dimensional scaling and perturbative quantum chromodynamics
description: Submitted to Physical Review Letters
Optimized Decoding-Energy-Aware Encoding in Practical VVC Implementations
Creators: name: Kränzler, Matthias
name: Wieckowski, Adam
name: Ramasubbu, Geetha
name: Bross, Benjamin
name: Kaup, André
name: Marpe, Detlev
name: Herglotz, Christian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Image and Video Processing (eess.IV)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The optimization of the energy demand is crucial for modern video codecs. Previous studies show that the energy demand of VVC decoders can be improved by more than 50% if specific coding tools are disabled in the encoder. However, those approaches increase the bit rate by over 20% if the concept is applied to practical encoder implementations such as VVenC. Therefore, in this work, we investigate VVenC and study possibilities to reduce the additional bit rate, while still achieving low-energy decoding at reasonable encoding times. We show that encoding using our proposed coding tool profiles, the decoding energy efficiency is improved by over 25% with a bit rate increase of less than 5% with respect to standard encoding. Furthermore, we propose a second coding tool profile targeting maximum energy savings, which achieves 34% of energy savings at bitrate increases below 15%.
How to Constrain Your M dwarf II: the mass-luminosity-metallicity relation from 0.075 to 0.70$M_\odot$
Creators: name: Mann, Andrew W.
name: Dupuy, Trent
name: Kraus, Adam L.
name: Gaidos, Eric
name: Ansdell, Megan
name: Ireland, Michael
name: Rizzuto, Aaron C.
name: Hung, Chao-Ling
name: Dittmann, Jason
name: Factor, Samuel
name: Feiden, Gregory
name: Martinez, Raquel A.
name: Ruiz-Rodriguez, Dary
name: Thao, Pa Chia
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The mass-luminosity relation for late-type stars has long been a critical tool for estimating stellar masses. However, there is growing need for both a higher-precision relation and a better understanding of systematic effects (e.g., metallicity). Here we present an empirical relationship between Mks and mass spanning $0.075M_\odot
description: Published in ApJ/AAS Journals. Comments welcome. Code for computing mass posteriors from Ks+distance at https://github.com/awmann/M_-M_K-
TRIDENT – Technology based impact assessment tool foR sustaInable, transparent Deep sEa miNing exploraTion and exploitation: A project overview
Creators: name: Silva, E.
name: Viegas, D.
name: Martins, A.
name: Almeida, J.
name: Almeida, C.
name: Neves, B.
name: Madureira, P.
name: Wheeler, A.J.
name: Salavasidis, G.
name: Phillips, A.
name: Schaap, A.
name: Murton, B
name: Berry, A.
name: WEIR, ANTHONY
name: DOOLY, GERARD
name: OMERDIC, EDIN
name: TOAL, DANIEL
name: Collins, P. C.
name: Miranda, M.
name: Petrioli, C.
name: Barrera Rodríguez, C.
name: Demoor, D.
name: Drouet, C.
name: El Serafy, G.
name: Jesus, S.M.
name: Dañobeitia, J.
name: Tegas, V.
name: Cusi, S.
name: Lopes, L.
name: Bodo, B.
name: Beguery, L.
name: VanDam, S.
name: Dumortier, J.
name: Neves, L.
name: Srivastava, V.
name: Dahlgren, T.G.
name: Thomassen Hestetun, J.
name: Eiras, R.
name: Caldeira, R.
name: Rossi, C.
name: Spearman, J.
name: Somoza, L.
name: González, F.J.
name: Bartolomé, R.
name: Bahurel, P.
Publisher: name: University of Limerick
Year: 2024
Subjects: classificationCode: 40
subject: Engineering

description: By creating a dependable, transparent, and costeffective system for forecasting and ongoing environmental impact monitoring of exploration and exploitation activities in the deep sea, TRIDENT seeks to contribute to the sustainable exploitation of seabed mineral resources. In order to operate autonomously in remote locations under harsh conditions and send real-time data to authorities in charge of granting licenses and providing oversight, this system will create and integrate new technology and innovative solutions. The efficient monitoring and inspection system that will be created will abide by national and international legal frameworks. At the sea surface, mid-water, and the bottom, TRIDENT will identify all pertinent physical, chemical, geological, and biological characteristics that must be monitored. It will also look for data gaps and suggest procedures for addressing them. These are crucial actions to take in order to produce accurate indicators of excellent environmental status, statistically robust environmental baselines, and thresholds for significant impact, allowing for the standardization of methods and tools. In order to monitor environmental parameters on mining and reference areas at representative spatial and temporal scales, the project consortium will thereafter develop and test an integrated system of stationary and mobile observatory platforms outfitted with the most recent automatic sensors and samplers. The system will incorporate high-capacity data processing pipelines able to gather, transmit, process, and display monitoring data in close to real-time to facilitate prompt actions for preventing major harm to the environment. Last but not least, it will offer systemic and technological solutions for predicting probable impacts of applying the developed monitoring and mitigation techniques.
Primordial black holes and gravitational waves from dissipation during inflation
Creators: name: Ballesteros, Guillermo
name: García, Marcos A. G.
name: Rodríguez, Alejandro Pérez
name: Pierre, Mathias
name: Rey, Julián
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the generation of a localized peak in the primordial spectrum of curvature perturbations from a transient dissipative phase during inflation, leading to a large population of primordial black holes. The enhancement of the power spectrum occurs due to stochastic thermal noise sourcing curvature fluctuations. We solve the stochastic system of Einstein equations for many realizations of the noise and obtain the distribution for the curvature power spectrum. We then propose a method to find its expectation value using a deterministic system of differential equations. In addition, we find a single stochastic equation whose analytic solution helps to understand the main features of the spectrum. Finally, we derive a complete expression and a numerical estimate for the energy density of the stochastic background of gravitational waves induced at second order in perturbation theory. This includes the gravitational waves induced during inflation, during the subsequent radiation epoch and their mixing. Our scenario provides a novel way of generating primordial black hole dark matter with a peaked mass distribution and a detectable stochastic background of gravitational waves from inflation.
description: 48 pages, 11 figures; matches published version in JCAP; typo corrected, the rest of the paper is unchanged
Persistence and Nonpersistence as Complementary Models of Identical Quantum Particles
Creators: name: Goyal, Philip
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: According to our understanding of the everyday physical world, observable phenomena are underpinned by persistent objects that can be reidentified (or tracked) across time by observation of their distinctive properties. This understanding is reflected in classical mechanics, which posits that matter consists of persistent, reidentifiable particles. However, the mathematical symmetrization procedures used to describe identical particles within the quantum formalism have led to the widespread belief that identical quantum particles lack either persistence or reidentifiability. However, it has proved difficult to reconcile these assertions with the fact that identical particles are routinely assumed to be reidentifiable in particular circumstances. Moreover, neither of these assertions accounts for the mathematical form of the symmetrization procedures used to describe identical particles within the quantum framework, leaving open theoretical possibilities other than bosonic and fermionic behavior, such as paraparticles, which do not appear to be realized in nature. Here we propose the novel idea that both persistence and nonpersistence models must be employed in order to fully account for the behaviour of identical particles. Thus, identical particles are neither persistent nor nonpersistent. We prove the viability of this viewpoint by showing how Feynman's and Dirac's symmetrization procedures arise through a synthesis of a quantum treatment of these models, and by showing how reidentifiability emerges in a context-dependent manner. We further show that the persistence and nonpersistence models satisfy the key characteristics of Bohr's concept of complementarity, and thereby propose that the behavior of identical particles is a manifestation of a persistence-nonpersistence complementarity, analogous to Bohr's wave-particle complementarity for individual particles.
Quantum Breathers in a Nonlinear Lattice
Creators: name: Wang, W. Z.
name: Gammel, J. Tinka
name: Bishop, A. R.
name: Salkola, M. I.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We study nonlinear phonon excitations in a one-dimensional quantum nonlinear lattice model using numerical exact diagonalization. We find that multi-phonon bound states exist as eigenstates which are natural counterparts of breather solutions of classical nonlinear systems. In a translationally invariant system, these quantum breather states form particle-like bands and are characterized by a finite correlation length. The dynamic structure factor has significant intensity for the breather states, with a corresponding quenching of the neighboring bands of multi-phonon extended states.
description: 4 pages, RevTex, 4 postscript figures, Physical Relview Letters (in press)
Do the solar flares' locations illustrate the boundaries of the solar inner layers?
Creators: name: Mawad, Ramy
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The angular distance of the heliographical or helioprojective coordinates of the solar flares to the projective point of the center of the Sun on the solar disk has been studied during the periods 1975--2021 for GOES events and 2002--2021 for RHESSI events. It gives a specific distribution hereafter Distance. The distribution remains the same without significant changes in the importance value of the solar flare too, with the different coordinate systems, different GOES classifications, and different observational satellites. In addition, it gives the same distribution during each solar cycle. The curvature of the distance distribution has four peaks, which are denoted by the four central rings around the center of the solar disk that look like the solar inner layers in the background. 1) The core circle [0--15$^{\circ}$]: it is a projection of the solar core onto the solar disk. 2) Radiative ring [15$^{\circ}$--45$^{\circ}$]. 3) The convection ring [45$^{\circ}$--55$^{\circ}$]. The limb ring [80$^{\circ}$--90$^{\circ}$]. A large number of solar flares occurred in the radiative and convection rings. While we have a few events in the core and limb rings.
description: 12 pages, 6 figure, 10 plots of figures
Classical Yang-Baxter equation from beta-supergravity
Creators: name: Bakhmatov, Ilya
name: Musaev, Edvard
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Yang-Baxter deformations of superstring sigma-models have recently inspired a supergravity solution generating technique. Using the open/closed string map and a Killing bi-vector as a deformation parameter, new solutions can be built, such that the (generalised) supergravity field equations were conjectured to always reduce to the classical Yang-Baxter equation (CYBE). In this work we provide a proof of this conjecture, using a systematic approach based on the so-called $β$-supergravity, which is a dynamical theory for the field $β^{mn}$ instead of the NSNS 2-form $b_{mn}$.
description: 19 pages; v2: references updated; v3: published version
Pseudo-gap features of intrinsic tunneling in (HgBr_2)-Bi2212 single crystals
Creators: name: Yurgens, A.
name: Winkler, D.
name: Claeson, T.
name: Hwang, Seong-Ju
name: Choy, Jin-Ho
Publisher: name: arXiv
Year: 1999
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The c-axis tunneling properties of both pristine Bi2212 and its HgBr$_2$ intercalate have been measured in the temperature range 4.2 - 250 K. Lithographically patterned 7-10 unit-cell heigh mesa structures on the surfaces of these single crystals were investigated. Clear SIS-like tunneling curves for current applied in the $\it c$-axis direction have been observed. The dynamic conductance d$I/$d$V(V)$ shows both sharp peaks corresponding to a superconducting gap edge and a dip feature beyond the gap, followed by a wide maximum, which persists up to a room temperature. Shape of the temperature dependence of the {\it c}-axis resistance does not change after the intercalation suggesting that a coupling between $\rm CuO_2$-bilayers has little effect on the pseudogap.
description: 6 pages, 5 figures; presented at the Second Int Conf. New3Sc-1999 (Las Vegas, NV)
Advanced Design Space Exploration for Joint Energy and Quality Optimization for VVC
Creators: name: Kränzler, Matthias
name: Herglotz, Christian
name: Kaup, André
Publisher: name: arXiv
Year: 2022
Subjects: subject: Image and Video Processing (eess.IV)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In recent studies, it could be shown that the energy demand of Versatile Video Coding (VVC) decoders can be twice as high as comparable High Efficiency Video Coding (HEVC) decoders. A significant part of this increase in complexity is attributed to the usage of new coding tools. By using a design space exploration algorithm, it was shown that the energy demand of VVC-coded sequences could be reduced if different coding tool profiles were used for the encoding process. This work extends the algorithm with several optimization strategies, methodological adjustments to optimize perceptual quality, and a new minimization criterion. As a result, we significantly improve the Pareto front, and the rate-distortion and energy efficiency of the state-of-the-art design space exploration. Therefore, we show an energy demand reduction of up to 47% with less than 30% additional bit rate, or a reduction of over 35% with approximately 6% additional bit rate.
description: accepted as a conference paper for Picture Coding Symposium (PCS) 2022
Additional file 2: of Does testosterone mediate the relationship between vitamin D and prostate cancer? A systematic review and meta-analysis protocol
Creators: name: Robles, Luke
name: Dawe, Karen
name: Martin, Richard
name: Higgins, Julian
name: Lewis, Sarah
Publisher: name: figshare
Year: 2019
Subjects: Developmental Biology
Cancer

description: MEDLINE search strategy. (DOCX 15Â kb)
title: More Opportunity, More Cooperation?
title: The Behavioral Effects of Birthright Citizenship on Immigrant Youth
titleType: Subtitle
Creators: name: Felfe, Christina
name: Kocher, Martin
name: Rainer, Helmut
name: Saurer, Judith
name: Siedler, Thomas
Publisher: name: Universität Potsdam
Year: 2021
Subjects: subject: 330 Wirtschaft

description: Inequality of opportunity, particularly when overlaid with socioeconomic, ethnic, or cultural differences, may limit the scope of cooperation between individuals. A central question, then, is how to overcome such obstacles to cooperation. We study this question in the context of Germany, by asking whether the propensity of immigrant youth to cooperate with native peers was affected by a major integration reform: the introduction of birthright citizenship. Our unique setup exploits data from a large-scale lab-in-the-field experiment in a quasi-experimental evaluation framework. We find that the policy caused male, but not female, immigrants to significantly increase their cooperativeness toward natives. We show that the increase in out-group cooperation among immigrant boys is an outcome of more trust rather than a reflection of stronger other- regarding preferences towards natives. In exploring factors that may explain these behavioral effects, we present evidence that the policy also led to a near-closure of the educational achievement gap between young immigrant men and their native peers. Our results highlight that, through integration interventions, governments can modify prosocial behavior in a way that generates higher levels of efficiency in the interaction between social groups.
description: CEPA Discussion Papers; 32
Stanley character formula for the spin characters of the symmetric groups
Creators: name: Matsumoto, Sho
name: Śniady, Piotr
Publisher: name: arXiv
Year: 2018
Subjects: subject: Combinatorics (math.CO)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 20C25 (Primary) 20C30, 05E05 (Secondary)

description: We give a new formula for the irreducible spin characters of the symmetric groups. This formula is analogous to Stanley's character formula for the usual (linear) characters of the symmetric groups.
description: 12 pages. Initial submission of the extended abstract for FPSAC 2019 conference. A full version of this extended abstract will be available soon as a separate paper
Sweet Streams are Made of This: The System Engineer's View on Energy Efficiency in Video Communications
Creators: name: Herglotz, Christian
name: Kränzler, Matthias
name: Schober, Robert
name: Kaup, André
Publisher: name: arXiv
Year: 2022
Subjects: subject: Image and Video Processing (eess.IV)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In recent years, the global use of online video services has increased rapidly. Today, a manifold of applications, such as video streaming, video conferencing, live broadcasting, and social networks, make use of this technology. A recent study found that the development and the success of these services had as a consequence that, nowadays, more than 1% of the global greenhouse-gas emissions are related to online video, with growth rates close to 10% per year. This article reviews the latest findings concerning energy consumption of online video from the system engineer's perspective, where the system engineer is the designer and operator of a typical online video service. We discuss all relevant energy sinks, highlight dependencies with quality-of-service variables as well as video properties, review energy consumption models for different devices from the literature, and aggregate these existing models into a global model for the overall energy consumption of a generic online video service. Analyzing this model and its implications, we find that end-user devices and video encoding have the largest potential for energy savings. Finally, we provide an overview of recent advances in energy efficiency improvement for video streaming and propose future research directions for energy-efficient video streaming services.
description: 16 pages, 5 figures, accepted for IEEE Circuits and Systems Magazine
Additional file 1: of Does testosterone mediate the relationship between vitamin D and prostate cancer? A systematic review and meta-analysis protocol
Creators: name: Robles, Luke
name: Dawe, Karen
name: Martin, Richard
name: Higgins, Julian
name: Lewis, Sarah
Publisher: name: figshare
Year: 2019
Subjects: subject: Molecular Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: PRISMA-P 2015 Checklist. (DOCX 30Â kb)
Ship Anti-Grounding with a Maritime Autonomous Surface Ship and Digital Twin of Port of Hamburg
Creators: name: Riordan, James
name: Constapel, Manfred
name: Trslic, Petar
name: DOOLY, GERARD
name: Oeffner, Johannes
name: Schneider, Vincent
Publisher: name: University of Limerick
Year: 2024
Subjects: classificationCode: 40
subject: Engineering

description: We present the virtual demonstration of a novel ship Anti-Grounding Service in a digital twinned use case scenario in the Port of Hamburg. The scenario is generated from real bathymetry survey data collected in the Port. The virtual model of a Maritime Autonomous Surface Ship travels the route ahead of merchant ships on approach to the Port and is integrated with a real-time high-resolution Multibeam SONAR Simulator that synthesizes underkeel survey data. The automated data processing workflow detects potential grounding hazards in the synthetic survey data and provides a real-time update of the Port nautical chart, which is presented in the Electronic Chart Display and Information System of a Ship Handling Simulator. Our method is the first to consider Multibeam SONAR equipped Maritime Autonomous Surface Ship platforms for provision of ship Anti-Grounding Services. The results validate the full-scale simulation and automated hazard detection workflow and incorporate tests conducted with certified mariners (N=10) to address human factors of introducing new technologies into safety critical situations. The key contributions of this work are summarized as: 1) Validation of Maritime Autonomous Surface Ships as an Anti-Grounding Service delivery platform; 2) Demonstration of a Digital Twin for hydrography survey and bottom hazard detection; and 3) Experimental validation with certified mariners of the antigrounding service Human-Computer Interface on the ship bridge.
Correlation functions in decorated lattice models
Creators: name: Ispolatov, I.
name: Koga, K.
name: Widom, B.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Occupation probabilities for primary-secondary-primary cell strings and correlation functions for primary sites of a decorated lattice model are expressed through the well-studied partition function and correlation functions of the Ising model. The results are analogous to those found in related lattice models of hydrophobic interactions and are interpreted in similar terms.
description: 9 pages, 7 figures
Stochastic Paleoclimatology: Modeling the EPICA Ice Core Climate Records
Creators: name: Keyes, N. D. B.
name: Giorgini, L. T.
name: Wettlaufer, J. S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: We analyze and model the stochastic behavior of paleoclimate time series and assess the implications for the coupling of climate variables during the Pleistocene glacial cycles. We examine 800 kyr of carbon dioxide, methane, nitrous oxide, and temperature proxy data from the EPICA Dome-C ice core, which are characterized by 100~kyr glacial cycles overlain by fluctuations across a wide range of time scales. We quantify this behavior through multifractal time-weighted detrended fluctuation analysis, which distinguishes near red-noise and white-noise behavior below and above the 100~kyr glacial cycle respectively in all records. This allows us to model each time series as a one-dimensional periodic non-autonomous stochastic dynamical system, and assess the stability of physical processes and the fidelity of model-simulated time series. We extend this approach to a four-variable model with linear coupling terms, which we interpret in terms of the interrelationships between the time series. Methane and nitrous oxide are found to have significant destabilizing influences, while carbon dioxide and temperature have smaller stabilizing influences. We draw conclusions about causal relationships in glacial transitions and the climate processes that may have facilitated these couplings, and highlight opportunities to further develop stochastic modeling approaches.
description: 14 pages, 6 figures
title: The Long-Run Effects of Sports Club Vouchers for Primary School Children
Creators: name: Marcus, Jan
name: Siedler, Thomas
name: Ziebarth, Nicolas R.
Publisher: name: Universität Potsdam
Year: 2021
Subjects: subject: 330 Wirtschaft

description: Starting in 2009, the German state of Saxony distributed sports club membership vouchers among all 33,000 third graders in the state. The policy’s objective was to encourage them to develop a long-term habit of exercising. In 2018, we carried out a large register-based survey among several cohorts in Saxony and two neighboring states. Our difference-in-differences estimations show that, even after a decade, awareness of the voucher program was significantly higher in the treatment group. We also find that youth received and redeemed the vouchers. However, we do not find significant short- or long-term effects on sports club membership, physical activity, overweightness, or motor skills.
description: CEPA Discussion Papers; 34
Additional file 3: of The Oxford study of Calcium channel Antagonism, Cognition, Mood instability and Sleep (OxCaMS): study protocol for a randomised controlled, experimental medicine study
Creators: name: Atkinson, Lauren
name: Colbourne, Lucy
name: Smith, Alexander
name: Harmer, Catherine
name: Nobre, Anna
name: Rendell, Jennifer
name: Jones, Helen
name: Hinds, Christopher
name: Mould, Arne
name: Tunbridge, Elizabeth
name: Cipriani, Andrea
name: Geddes, John
name: Saunders, Kate
name: Harrison, Paul
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Ethical approval letter. (DOCX 846 kb)
Developments in Underwater Robot Capabilities for Offshore Wind
Creators: name: Santos, Phillipe
name: Santos, Matheus
name: Trslic, Petar
name: WEIR, ANTHONY
name: DOOLY, GERARD
name: OMERDIC, EDIN
name: TOAL, DANIEL
Publisher: name: University of Limerick
Year: 2024
Subjects: classificationCode: 40
subject: Engineering

description: Robotic technologies are increasingly used to perform inspection, maintenance, and intervention tasks in offshore wind farms. However, these tasks can be challenging due to the dynamic and harsh environments in which wind farms are typically located. In this paper, we present a set of developments in underwater robot capabilities for offshore wind applications, including a discussion of control systems, garaged ROVs, autodocking solutions, necessary intervention capabilities, and inspection equipment. We also present recent results of field trials for real-time underwater imaging and laser scanning. The paper concludes with a discussion of the importance of robust systems and equipment selection and future directions for research in this area.
Large Rapidity Gap Events in DIS
Creators: name: Wüsthoff, Mark
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Diffractive scattering in DIS is discussed in terms of the perturbative two-gluon model and numerical results for $F_2^D$ are presented.
description: 5 pages with 6 ps-figures in the text. Talk presented at the 5th International Workshop on Deep Inelastic Scattering and QCD, Chicago, IL, USA, April 14-18, 1997
MPEC 2025-D69 : 2025 DY1
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2025
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2025 DY1

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Superposition Formulae for the Geometric Bäcklund Transformations of the Hyperbolic and Elliptic Sine-Gordon and Sinh-Gordon Equations
Creators: name: Kelmer, Filipe
name: Tenenblat, Keti
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 58J72, 35J15, 35L10, 53A35, 53A05

description: We provide superposition formulae for the six cases of Bäcklund transformations corresponding to space-like and time-like surfaces in the 3-dimensional pseudo-Euclidean space. In each case, the surfaces have constant negative or positive Gaussian curvature and they correspond to solutions of one of the following equations: the sine-Gordon, the sinh-Gordon, the elliptic sine-Gordon and the elliptic sinh-Gordon equation. The superposition formulae provide infinitely many solutions algebraically after the first integration of the Bäcklund transformation. Such transformations and the corresponding superposition formulae provide solutions of the same hyperbolic equation, while they show an unusual property for the elliptic equations. The Bäcklund transformation alternates solutions of the elliptic sinh-Gordon equation with those of the elliptic sine-Gordon equation and the superposition formulae provide solutions of the same elliptic equation. Explicit examples and illustrations are given.