cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hidden-charm pentaquark states through the current algebra: From their productions to decays
Creators: name: Chen, Hua-Xing
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: There may exist seven $\bar D^{(*)} Σ_c^{(*)}$ hadronic molecular states. We construct their corresponding interpolating currents, and calculate their masses and decay constants using QCD sum rules. Based on these results, we calculate their relative production rates in $Λ_b^0$ decays through the current algebra, i.e., $\mathcal{B}(Λ_b^0 \to P_c K^-):\mathcal{B}(Λ_b^0 \to P_c^\prime K^-)$ with $P_c$ and $P_c^\prime$ two different states. We also study their decay properties through the Fierz rearrangement, and further calculate these ratios in the $J/ψp$ mass spectrum, i.e., $\mathcal{B}(Λ_b^0 \to P_c K^- \to J/ψp K^-):\mathcal{B}(Λ_b^0 \to P_c^\prime K^- \to J/ψp K^-)$. Our results suggest that the $\bar D^{*} Σ_c^{*}$ molecular states of $J^P = 1/2^-$ and $3/2^-$ are possible to be observed in future experiments.
description: 32 pages, 5 figures, 5 tables, revised version to be published in Chin. Phys. C
Evolution of electron Fermi surface with doping in cobaltates
Creators: name: Ma, Xixiao
name: Lan, Yu
name: Qin, Ling
name: Kuang, Lulin
name: Feng, Shiping
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The notion of the electron Fermi surface is one of the characteristic concepts in the field of condensed matter physics, and it plays a crucial role in the understanding of the physical properties of doped Mott insulators. Based on the t-J model, we study the nature of the electron Fermi surface in the cobaltates, and qualitatively reproduce the essential feature of the evolution of the electron Fermi surface with doping. It is shown that the underlying hexagonal electron Fermi surface obeys Luttinger's theorem. The theory also predicts a Fermi-arc phenomenon at the low-doped regime, where the region of the hexagonal electron Fermi surface along the Γ-K direction is suppressed by the electron self-energy, and then six disconnected Fermi arcs located at the region of the hexagonal electron Fermi surface along the Γ-M direction emerge. However, this Fermi-arc phenomenon at the low-doped regime weakens with the increase of doping.
description: 8 pages, 4 figures, added references and discussions, accepted for publication in J. Phys. Condens. Matter. arXiv admin note: text overlap with arXiv:1510.05384
title: NATSUSHIMA/Hyper-Dolphin NT08-15
Creators: name: Takemura, Akihiro
Publisher: name: JAMSTEC
Year: 2008
Subjects: subject: oceans
subject: Cruise report
subject: R/V NATSUSHIMA

description: [CRUISE REPORT] This document is a preliminary report of NT08-15 on R/V NATSUSHIMA from 2008-07-19 to 2008-07-23.
Galactic runaway O and Be stars found using Gaia DR3
Creators: name: Carretero-Castrillo, M.
name: Ribó, M.
name: Paredes, J. M.
Publisher: name: Zenodo
Year: 2023
Subjects: runaway stars, O stars, Be stars

description: A relevant fraction of massive stars are runaway stars, moving with a significant peculiar velocity with respect to their environment. The runaway origin can be explained by kicks produced in supernova explosions or by dynamical ejection of stars from clusters. Runaway stars can be detected using accurate proper motions and parallaxes such as the ones provided by Gaia. We present here a 2-dimensional method in the velocity space to discover runaway stars among GOSC and BeSS catalogs using Gaia DR3 data. We found 106 O runaway stars, 42 of them with no previous identification as runaways, and 69 Be runaway stars, 47 of them with no previous identification as runaways. We further characterize their velocity dispersion, spatial distribution and runaway percentage as a function of the spectral type. The percentage of runaways is 25.4% for O-type stars and decreases to 5.2% for Be-type stars. The higher percentages and larger velocities found for O-type runaways compared to Be-type ones reinforce the dominance of the dynamical ejection scenario versus the binary supernova one. Our results open the door to identify new high-energy systems or stellar bow shocks among our runaways by conducting detailed studies.
An explicit bound for the least prime ideal in the Chebotarev density theorem
Creators: name: Thorner, Jesse
name: Zaman, Asif
Publisher: name: arXiv
Year: 2016
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We prove an explicit version of Weiss' bound on the least norm of a prime ideal in the Chebotarev density theorem, which is itself a significant improvement on the work of Lagarias, Montgomery, and Odlyzko. In order to accomplish this, we prove an explicit log-free zero density estimate and an explicit version of the zero-repulsion phenomenon for Hecke $L$-functions. As an application, we prove the first explicit nontrivial upper bound for the least prime represented by a positive-definite primitive binary quadratic form. We also present applications to the group of $\mathbb{F}_p$-rational points of an elliptic curve and congruences for the Fourier coefficients of holomorphic cuspidal modular forms.
description: 45 pages. v1 subsumes arXiv:1510.08086 but adds too much new material to be considered a revised version; v2 exposition tightened, minor corrections, slight improvement in Theorem 1.1
title: PRELIMINARY REPORT OF NT08-14 CRUISE
Creators: name: Matsumoto, Takeshi
Publisher: name: JAMSTEC
Year: 2008
Subjects: subject: oceans
subject: Cruise report
subject: R/V NATSUSHIMA

description: [CRUISE REPORT] This document is a preliminary report of NT08-14 on R/V NATSUSHIMA from 2008-07-14 to 2008-07-17.
title: Fettstoffwechselstörungen bei Patienten mit Offenwinkelglaukom
Creators: name: Jasper, Carolin
name: Pillunat, K. R.
name: Spörl, E.
name: Hermann, C.
name: Eulitz, P.
name: Thomaschewski, G.
name: Pillunat, L. E.
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund: Ziel dieser Studie war es zu untersuchen, wie häufig eine Hyperlipidämie bei Hochdruckglaukom (HDG) und Normaldruckglaukom (NDG) vorliegt. Methoden: In dieser Querschnittsstudie wurden 179 Patienten mit HDG (n=87; 65.3±9.5 Jahre) und NDG (n=92; 67.2±8.9[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Jahrestagung 2016 der Sächsischen Augenärztlichen Gesellschaft
Neural graph embeddings as explicit low-rank matrix factorization for link prediction
Creators: name: Agibetov, Asan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Social and Information Networks (cs.SI)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: I.2

description: Learning good quality neural graph embeddings has long been achieved by minimizing the point-wise mutual information (PMI) for co-occurring nodes in simulated random walks. This design choice has been mostly popularized by the direct application of the highly-successful word embedding algorithm word2vec to predicting the formation of new links in social, co-citation, and biological networks. However, such a skeuomorphic design of graph embedding methods entails a truncation of information coming from pairs of nodes with low PMI. To circumvent this issue, we propose an improved approach to learning low-rank factorization embeddings that incorporate information from such unlikely pairs of nodes and show that it can improve the link prediction performance of baseline methods from 1.2% to 24.2%. Based on our results and observations we outline further steps that could improve the design of next graph embedding algorithms that are based on matrix factorization.
title: Natsushima Cruise Report NT08-13
Creators: name: Toki, Tomohiro
Publisher: name: JAMSTEC
Year: 2008
Subjects: subject: oceans
subject: Cruise report
subject: R/V NATSUSHIMA

description: [CRUISE REPORT] This document is a preliminary report of NT08-13 on R/V NATSUSHIMA from 2008-07-06 to 2008-07-12.
The build-up of the red sequence in the Hercules cluster
Creators: name: Agulli, I.
name: Aguerri, J. A. L.
name: Palmero, L. Dominguez
name: Diaferio, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the study of the colour-magnitude diagram of the cluster Abell 2151 (A2151), with a particular focus on the low-mass end. The deep spectroscopy with AF2/WYFFOS@WHT and the caustic method enable us to obtain 360 members within 1.3 R_200 and absolute magnitude M_r < M*_r+6. This nearby cluster shows a well defined red sequence up to M_r ~ - 18.5; at fainter magnitudes only 36% of the galaxies lie on the extrapolation of the red sequence. We compare the red sequences of A2151 and Abell 85, which is another nearby cluster with similar spectroscopic data, but with different mass and dynamical state. Both clusters show similar red sequences at the bright end (M_r < -19.5), whereas large differences appear at the faint end. This result suggests that the reddening of bright galaxies is independent of environment, unlike the dwarf population (M_r > -18.0).
description: 5 pages, 4 figures, accepted for publication as a letter in MNRAS
title: Pilzkeratitis und exogene Pilzendophthalmitis
Creators: name: Viestenz, Arne
name: Daas, L.
name: Bischoff-Jung, M.
name: Seitz, B.
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Die Pilzkreatitis ist eine diagnostische Herausforderung. Die Zeichen BB1 und BB2 können den Pilzverdacht erhärten. Die Frühdiagnostik ist entscheidend für die richtige antimykotische Therapie, welche zeitnah und konsequent eingeleitet werden muss. Die Hornhautabrasio ermöglicht[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Jahrestagung 2016 der Sächsischen Augenärztlichen Gesellschaft
title: Yokosuka Cruise Report YK09-11 Production of the TV program with "SHINKAI6500" dive
Creators: name: Tashiro, Shozo
Publisher: name: JAMSTEC
Year: 2009
Subjects: subject: oceans
subject: Cruise report
subject: S/V YOKOSUKA

description: [CRUISE REPORT] This document is a preliminary report of YK09-11 Leg2 on S/V YOKOSUKA from 2009-08-24 to 2009-08-27.
Assets in Software Engineering: What are they after all?
Creators: name: Zabardast, Ehsan
name: Frattini, Julian
name: Gonzalez-Huerta, Javier
name: Mendez, Daniel
name: Gorschek, Tony
name: Wnuk, Krzysztof
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: During the development and maintenance of software-intensive products or services, we depend on various artefacts. Some of those artefacts, we deem central to the feasibility of a project and the product's final quality. Typically, these central artefacts are referred to as assets. However, despite their central role in the software development process, little thought is yet invested into what eventually characterises as an asset, often resulting in many terms and underlying concepts being mixed and used inconsistently. A precise terminology of assets and related concepts, such as asset degradation, are crucial for setting up a new generation of cost-effective software engineering practices. In this position paper, we critically reflect upon the notion of assets in software engineering. As a starting point, we define the terminology and concepts of assets and extend the reasoning behind them. We explore assets' characteristics and discuss what asset degradation is as well as its various types and the implications that asset degradation might bring for the planning, realisation, and evolution of software-intensive products and services over time. We aspire to contribute to a more standardised definition of assets in software engineering and foster research endeavours and their practical dissemination in a common, more unified direction.
description: Manuscript submitted to the Journal of Systems and Software
title: PRELIMINARY REPORT OF NT08-12 CRUISE
Creators: name: Kimura, Satoshi
Publisher: name: JAMSTEC
Year: 2008
Subjects: subject: oceans
subject: Cruise report
subject: R/V NATSUSHIMA

description: [CRUISE REPORT] This document is a preliminary report of NT08-12 on R/V NATSUSHIMA from 2008-06-23 to 2008-07-04.
Path Loss Modeling and Measurements for Reconfigurable Intelligent Surfaces in the Millimeter-Wave Frequency Band
Creators: name: Tang, Wankai
name: Chen, Xiangyu
name: Chen, Ming Zheng
name: Dai, Jun Yan
name: Han, Yu
name: Di Renzo, Marco
name: Jin, Shi
name: Cheng, Qiang
name: Cui, Tie Jun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: Information Theory (cs.IT)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Reconfigurable intelligent surfaces (RISs) provide an interface between the electromagnetic world of wireless propagation environments and the digital world of information science. Simple yet sufficiently accurate path loss models for RISs are an important basis for theoretical analysis and optimization of RIS-assisted wireless communication systems. In this paper, we refine our previously proposed free-space path loss model for RISs to make it simpler, more applicable, and easier to use. The impact of the antenna's directivity of the transmitter, receiver, and the unit cells of the RIS on the path loss is explicitly formulated as an angle-dependent loss factor. The refined model gives more accurate estimates of the path loss of RISs comprised of unit cells with a deep sub-wavelength size. Based on the proposed model, the properties of a single unit cell are evaluated in terms of scattering performance, power consumption, and area, which allows us to unveil fundamental considerations for deploying RISs in high frequency bands. Two fabricated RISs operating in the millimeter-wave (mmWave) band are utilized to carry out a measurement campaign. The measurement results are shown to be in good agreement with the proposed path loss model. In addition, the experimental results suggest an effective form to characterize the power radiation pattern of the unit cell for path loss modeling.
description: Model refinements are introduced to previously proposed free-space path loss model for RISs in order to make it simpler and easier to use. The properties of a single unit cell are evaluated in terms of scattering performance, power, and area, as it is the basic element of an RIS. We report the world's first measurement campaign in the mmWave frequency band to validate the path loss model for RISs
title: NATSUSHIMA Cruise Report NT08-11
Creators: name: Fujii, Teruo
Publisher: name: JAMSTEC
Year: 2008
Subjects: subject: oceans
subject: Cruise report
subject: R/V NATSUSHIMA

description: [CRUISE REPORT] This document is a preliminary report of NT08-11 on R/V NATSUSHIMA from 2008-06-07 to 2008-06-20.
Separable metamaterials: analytical ab-initio homogenization and chirality
Creators: name: Ciattoni, Alessandro
name: Rago, Domenico
name: Rizza, Carlo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We investigate the ab-initio homogenization of separable metamaterials with factorized dielectric permittivity profile which can be achieved through suitable grey-scale permittivity design techniques. Separability allows such metamaterials to be physically regarded as the superposition of three fictitious 1D generating media. We prove that, in the long-wavelength limit, separable metamaterials admit simple and analytical description of their electromagnetic bi-anisotropic response which can be reconstructed from the properties of the 1D generating media. Our approach provides a strategy which allows the full ab-initio and flexible design of a complex bianisotropic response by using 1D metamaterials as basic building blocks.
description: 5 pages, 2 fgures
title: NT08-10 R/V Natsushima-ROV Hyperdolphin Sagami bay cruise
Creators: name: Oguri, Kazumasa
Publisher: name: JAMSTEC
Year: 2008
Subjects: subject: oceans
subject: Cruise report
subject: R/V NATSUSHIMA

description: [CRUISE REPORT] This document is a preliminary report of NT08-10 on R/V NATSUSHIMA from 2008-05-29 to 2008-06-01.
Effect of strain and many-body corrections on the band inversions and topology of bismuth
Creators: name: König, Christian
name: Greer, James C.
name: Fahy, Stephen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The electronic band structure of Bi is calculated using state of the art electronic structure methods, including density functional theory and G$_0$W$_0$ quasiparticle approximations. The delicate ordering of states at the L point of the Brillouin zone, which determines the topological character of the electronic bands, is investigated in detail. The effect on the bands of strain, changing the structural parameters of the rhombohedral crystal structure, is shown to be important in determining this ordering and the resulting topological character.
Geppert, Th. (S. J.), Teleologie der menschlichen Gemeinschaft
Creators: name: Nell-Breuning, Oswald Von
Publisher: name: Scholastik
Year: 1970

description: Scholastik, Bd. 30 Nr. 2 (1955): Scholastik. Vierteljahresschrift für Theologie und Philosophie, Band 30, Heft 2
Particle creation phenomenology, Dirac sea and the induced Weyl and Einstein-dilaton gravity
Creators: name: Berezin, Victor
name: Dokuchaev, Vyacheslav
name: Eroshenko, Yury
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We constructed the conformally invariant model for scalar particle creation induced by strong gravitational fields. Starting from the "usual" hydrodynamical description of the particle motion written in the Eulerian coordinates we substituted the particle number conservation law (which enters the formalism) by "the particle creation law", proportional to the square of the Weyl tensor (following the famous result by Ya.B.Zel`dovich and A. A.Starobinsky). Then, demanding the conformal invariance of the whole dynamical system, we have got both the (Weyl)-conformal gravity and the Einstein--Hilbert gravity action integral with dilaton field. Thus, we obtained something like the induced gravity suggested first by A. D.Sakharov. It is shown that the resulting system is self-consistent. We considered also the vacuum equations. It is shown that, beside the "empty vacuum", there may exist the "dynamical vacuum", which is nothing more but the Dirac sea.
description: 12 pages, advanced version
title: NATSUSHIMA Cruise Report NT08-09 LEG1,2
Creators: name: Matsumoto, Ryo
Publisher: name: JAMSTEC
Year: 2008
Subjects: subject: oceans
subject: Cruise report
subject: R/V NATSUSHIMA

description: [CRUISE REPORT] This document is a preliminary report of NT08-09 Leg1 on R/V NATSUSHIMA from 2008-04-29 to 2008-05-10 and NT08-09 Leg2 on R/V NATSUSHIMA from 2008-05-11 to 2008-05-23.
Localization of four-dimensional super Yang-Mills theories compactified on Riemann surface
Creators: name: Nagasaki, Koichi
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the partition function of super Yang-Mills theories defined on $T^2 \times Σ_g$. This path integral can be computed by the localization. The one-loop determinant is evaluated by the elliptic genus. This elliptic genus gives trivial result in our calculation. As a result, we obtain a theory defined on the Riemann surface.
description: 11 pages, some typos are corrected
title: Cruise Report Natsushima/Hyper-Dolphin NT08-07 LEG2
Creators: name: Inoue, Koji
Publisher: name: JAMSTEC
Year: 2008
Subjects: subject: oceans
subject: Cruise report
subject: R/V NATSUSHIMA

description: [CRUISE REPORT] This document is a preliminary report of NT08-07 Leg2 on R/V NATSUSHIMA from 2008-04-11 to 2008-04-16.
Statics and field-driven dynamics of transverse domain walls in biaxial nanowires under uniform transverse magnetic fields
Creators: name: Lu, Jie
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this work, we report analytical results on transverse domain wall (TDW) statics and field-driven dynamics in quasi one-dimensional biaxial nanowires under arbitrary uniform transverse magnetic fields (TMFs) based on the Landau-Lifshitz-Gilbert equation. Without axial driving fields, the static TDW should be symmetric about its center meanwhile twisted in its azimuthal angle distribution. By decoupling of polar and azimuthal degrees of freedom, an approximate solution is provided which reproduces these features to a great extent. When an axial driving field is applied, the dynamical behavior of a TDW is viewed as the response of its static profile to external excitations. By means of the asymptotic expansion method, the TDW velocity in traveling-wave mode is obtained, which provides the extent and boundary of the "velocity-enhancement" effect of TMFs to TDWs in biaxial nanowires. Finally numerical simulations are performed and strongly support our analytics.
description: 10 pages, 5 figures
title: NT08-07 Cruise Dynamics of submarine eruption of felsic magmas at Myojinsho caldera
Creators: name: Shimano, Taketo
Publisher: name: JAMSTEC
Year: 2008
Subjects: subject: oceans
subject: Cruise report
subject: R/V NATSUSHIMA

description: [CRUISE REPORT] This document is a preliminary report of NT08-07 Leg1 on R/V NATSUSHIMA from 2008-04-03 to 2008-04-10.
title: Cruise Report of JAMSTEC R/V Natsushima NT0801
Creators: name: Sugioka, Hiroko
Publisher: name: JAMSTEC
Year: 2008
Subjects: subject: oceans
subject: Cruise report
subject: R/V NATSUSHIMA

description: [CRUISE REPORT] This document is a preliminary report of NT08-01 on R/V NATSUSHIMA from 2008-01-07 to 2008-01-10.
Höllenbach, J. M., S. J., Sein und Gewissen
Creators: name: Ogiermann, Helmut
Publisher: name: Scholastik
Year: 1970

description: Scholastik, Bd. 30 Nr. 2 (1955): Scholastik. Vierteljahresschrift für Theologie und Philosophie, Band 30, Heft 2
uFLIM -- Unsupervised analysis of FLIM-FRET microscopy data
Creators: name: Masia, Francesco
name: Dewitte, Walter
name: Borri, Paola
name: Langbein, Wolfgang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Despite their widespread use in cell biology, fluorescence lifetime imaging microscopy (FLIM) data-sets are challenging to analyse, because each spatial position can contain a superposition of multiple fluorescent components. Here, we present a data analysis method employing all information in the available photon budget, as well as being fast. The method, called uFLIM, determines spatial distributions and temporal dynamics of multiple fluorescent components with no prior knowledge. It goes significantly beyond current approaches which either assume the functional dependence of the dynamics, e.g. an exponential decay, or require dynamics to be known, or calibrated. Its efficient non-negative matrix factorization algorithm allows for real-time data processing. We validate in silico that uFLIM is capable to disentangle the spatial distribution and spectral properties of five fluorescing probes, from only two excitation and detection channels and a photon budget of 100 detected photons per pixel. By adapting the method to data exhibiting Forster resonant energy transfer (FRET), we retrieve the spatial and transfer rate distribution of the bound species, without constrains on donor and acceptor dynamics.
title: KAIYO Cruise Report KY08-E04
Creators: name: Ochi, Hiroshi
Publisher: name: JAMSTEC
Year: 2008
Subjects: subject: oceans
subject: Cruise report
subject: R/V KAIYO

description: [CRUISE REPORT] This document is a preliminary report of KY08-E04 on R/V KAIYO from 2008-12-05 to 2008-12-24.
title: R/V Kaiyo Cruise Report KY08-E03
Creators: name: Kodaira, Shuichi
Publisher: name: JAMSTEC
Year: 2008
Subjects: subject: oceans
subject: Cruise report
subject: R/V KAIYO

description: [CRUISE REPORT] This document is a preliminary report of KY08-E03 on R/V KAIYO from 2008-11-06 to 2008-11-21.
DBI action of real linear superfield in 4D ${\cal N}=1$ conformal supergravity
Creators: name: Aoki, Shuntaro
name: Yamada, Yusuke
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct the Dirac-Born-Infeld (DBI) action of a real linear multiplet in 4D $\mathcal{N}=1$ supergravity. Based on conformal supergravity, we derive the general condition under which the DBI action can be realized, and show that it can be constructed in the new minimal supergravity. We also generalize it to the matter coupled system.
description: 25pages,v2:references added,v3:comments added
Enhanced diffusivity in microscopically reversible active matter
Creators: name: Ryabov, Artem
name: Tasinkevych, Mykola
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Physics of self-propelled objects at the nanoscale is a rapidly developing research field where recent experiments focused on motion of individual catalytic enzymes. Contrary to the experimental advancements, theoretical understanding of possible self-propulsion mechanisms at these scales is limited. A particularly puzzling question concerns origins of reportedly high diffusivities of the individual enzymes. Here we start with the fundamental principle of microscopic reversibility (MR) of chemical reactions powering the self-propulsion and demonstrate that MR can lead to increase of the particle mobility and of short- and long-time diffusion coefficients as compared to dynamics where MR is neglected. Moreover, the diffusion coefficients can be enhanced by a constant external force. We propose a way to use these effects in experimental investigations of active propulsion mechanisms at the nanoscale. Our results can shed new light on interpretation of the measured diffusivities and help to test and to evaluate relevance of MR for the active motion of individual nanoswimmers.
description: Supporting information is included as an ancillary file
A coupling model for quasi-normal modes of photonic resonators
Creators: name: Vial, Benjamin
name: Hao, Yang
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We develop a model for the coupling of quasi-normal modes in open photonic systems consisting of two resonators. By expressing the modes of the coupled system as a linear combination of the modes of the individual particles, we obtain a generalized eigenvalue problem involving small size dense matrices. We apply this technique to dielectric rod dimmer of rectangular cross section for Transverse Electric (TE) polarization in a two-dimensional (2D) setup. The results of our model show excellent agreement with full-wave finite element simulations. We provide a convergence analysis, and a simplified model with a few modes to study the influence of the relative position of the two resonators. This model provides interesting physical insights on the coupling scheme at stake in such systems and pave the way for systematic and efficient design and optimization of resonances in more complicated systems, for applications including sensing, antennae and spectral filtering.
title: KAIYO Cruise Report KY08-09 Kuroshio Extension Region
Creators: name: Ichikawa, Hiroshi
Publisher: name: JAMSTEC
Year: 2008
Subjects: subject: oceans
subject: Cruise report
subject: R/V KAIYO

description: [CRUISE REPORT] This document is a preliminary report of KY08-09 on R/V KAIYO from 2008-09-02 to 2008-09-17.
On the number of hyperedges in the hypergraph of lines and pseudo-discs
Creators: name: Keller, Chaya
name: Keszegh, Balázs
name: Pálvölgyi, Dömötör
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: Computational Geometry (cs.CG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 05C15, 05C10

description: Consider the hypergraph whose vertex set is a family of $n$ lines in general position in the plane, and whose hyperedges are induced by intersections with a family of pseudo-discs. We prove that the number of $t$-hyperedges is bounded by $O_t(n^2)$ and that the total number of hyperedges is bounded by $O(n^3)$. Both bounds are tight.
description: Updated version, with minor improvements. 8 pages, 1 figure
Tailoring Rydberg interactions via Förster resonances: state combinations, hopping and angular dependence
Creators: name: Paris-Mandoki, Asaf
name: Gorniaczyk, Hannes
name: Tresp, Christoph
name: Mirgorodskiy, Ivan
name: Hofferberth, Sebastian
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Förster resonances provide a highly flexible tool to tune both the strength and the angular shape of interactions between two Rydberg atoms. We give a detailed explanation about how Förster resonances can be found by searching through a large range of possible quantum number combinations. We apply our search method to $SS$, $SD$ and $DD$ pair states of $^{87}$Rb with principal quantum numbers from 30 to 100, taking into account the fine structure splitting of the Rydberg states. We find various strong resonances between atoms with a large difference in principal quantum numbers. We quantify the strength of these resonances by introducing a figure of merit $\tilde C_3$ which is independent of the magnetic quantum numbers and geometry to classify the resonances by interaction strength. We further predict to what extent excitation exchange is possible on different resonances and point out limitations of the coherent hopping process. Finally, we discuss the angular dependence of the dipole-dipole interaction and its tunability near resonances.
description: 17 pages, 6 figures, fixed notation
Deepened Graph Auto-Encoders Help Stabilize and Enhance Link Prediction
Creators: name: Wu, Xinxing
name: Cheng, Qiang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Graph neural networks have been used for a variety of learning tasks, such as link prediction, node classification, and node clustering. Among them, link prediction is a relatively under-studied graph learning task, with current state-of-the-art models based on one- or two-layer of shallow graph auto-encoder (GAE) architectures. In this paper, we focus on addressing a limitation of current methods for link prediction, which can only use shallow GAEs and variational GAEs, and creating effective methods to deepen (variational) GAE architectures to achieve stable and competitive performance. Our proposed methods innovatively incorporate standard auto-encoders (AEs) into the architectures of GAEs, where standard AEs are leveraged to learn essential, low-dimensional representations via seamlessly integrating the adjacency information and node features, while GAEs further build multi-scaled low-dimensional representations via residual connections to learn a compact overall embedding for link prediction. Empirically, extensive experiments on various benchmarking datasets verify the effectiveness of our methods and demonstrate the competitive performance of our deepened graph models for link prediction. Theoretically, we prove that our deep extensions inclusively express multiple polynomial filters with different orders.
description: 10 pages
An Assessment of the Impact of Credit Risk Management on the financial performance of commercial banks in Sierra Leone
Creators: name: BARRIE, AMBALIEU
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 350204
subject: Financial institutions (incl. banking)
classificationCode: 350208
subject: Investment and risk management

description: Abstract
Credit risk is one of the most significant risks that banks face, considering that granting credit is one of the main sources of income in commercial banks. Therefore, the management of the risk related to that credit affects the profitability of the banks. The purpose of this study was to examine the importance of credit risk management on the financial performance of commercial banks in Sierra Leone. The study used a descriptive cross-sectional design using both qualitative and quantitative approaches to collect data from a sample of 70 respondents. The study uses Access Bank Sierra Leone Limited, Standard Chartered Bank Sierra Leone Limited, and Sierra Leone Commercial Bank, as a case study with particular reference to their Credit Risk and Finance Department.In achieving the objectives assigned by the study, a causal research design was undertaken and was facilitated by the use of secondary data which was obtained from published audited financial statements of the selected banks and the Bank of Sierra Leone Annual Supervision Report over a year from 2016 to 2020. In the research model, ROA is defined as a proxy of profitability while NPLR and CAR are defined as proxies of credit risk management. Questionnaires and interview guides were used to collect the data. Quantitative data were analyzed using frequency, mean, and ratios.The findings reveal that credit risk management plays an important role for commercial banks to record higher financial performance. The study established a positive and significant relationship between credit risk management and the profitability of banks in Sierra Leone. This implies that if the credit risk is well managed, it will have a significant positive effect on the financial performance of the bank and vice versa. Between the two proxies of credit risk management, NPLR has a significant and negative effect on ROA while CAR has a positive effect on ROA. Also, the researcher found support from previous empirical works which confirm that the higher the credit risk the lower the profitability of banks.
Keywords: Credit risk management, Profitability, Commercial banks, CAR, NPLR, ROA.
title: R/V Kaiyo Cruise Report KY08-08 "Seismic study in the Izu-Ogasawara region"
Creators: name: Sato, Takeshi
Publisher: name: JAMSTEC
Year: 2008
Subjects: subject: oceans
subject: Cruise report
subject: R/V KAIYO

description: [CRUISE REPORT] This document is a preliminary report of KY08-08 on R/V KAIYO from 2008-08-13 to 2008-08-28.
Constant congestion brambles in directed graphs
Creators: name: Masařík, Tomáš
name: Pilipczuk, Marcin
name: Rzążewski, Paweł
name: Sorge, Manuel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 05C20

description: The Directed Grid Theorem, stating that there is a function $f$ such that a directed graphs of directed treewidth at least $f(k)$ contains a directed grid of size at least $k$ as a butterfly minor, after being a conjecture for nearly 20 years, has been proven in 2015 by Kawarabayashi and Kreutzer. However, the function $f$ obtained in the proof is very fast growing. In this work, we show that if one relaxes directed grid to bramble of constant congestion, one can obtain a polynomial bound. More precisely, we show that for every $k \geq 1$ there exists $t = \mathcal{O}(k^{48} \log^{13} k)$ such that every directed graph of directed treewidth at least $t$ contains a bramble of congestion at most $8$ and size at least $k$.
description: 16 pages, 5 figures
Fast iterative method with a second order implicit difference scheme for time-space fractional convection-diffusion equations
Creators: name: Gu, Xian-Ming
name: Huang, Ting-Zhu
name: Ji, Cui-Cui
name: Carpentieri, Bruno
name: Alikhanov, Anatoly A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65F15, 65H18, 15A51

description: In this paper we want to propose practical numerical methods to solve a class of initial-boundary problem of time-space fractional convection-diffusion equations (TSFCDEs). To start with, an implicit difference method based on two-sided weighted shifted Grünwald formulae is proposed with a discussion of the stability and convergence. We construct an implicit difference scheme (IDS) and show that it converges with second order accuracy in both time and space. Then, we develop fast solution methods for handling the resulting system of linear equation with the Toeplitz matrix. The fast Krylov subspace solvers with suitable circulant preconditioners are designed to deal with the resulting Toeplitz linear systems. Each time level of these methods reduces the memory requirement of the proposed implicit difference scheme from $\mathcal{O}(N^2)$ to $\mathcal{O}(N)$ and the computational complexity from $O(N^3)$ to $O(N\log N)$ in each iterative step, where $N$ is the number of grid nodes. Extensive numerical example runs show the utility of these methods over the traditional direct solvers of the implicit difference methods, in terms of computational cost and memory requirements.
description: 29 pages, 8 tables, 4 figures. Submitted to academic journal for peer-review. arXiv admin note: text overlap with arXiv:1510.05089, arXiv:1503.04886 by other authors
Brecker, O., Grundlagen der Mathematik in geschichtlicher Entwicklung
Creators: name: Ennen, K.
Publisher: name: Scholastik
Year: 1970

description: Scholastik, Bd. 30 Nr. 2 (1955): Scholastik. Vierteljahresschrift für Theologie und Philosophie, Band 30, Heft 2
title: YOKOSUKA Cruise Report YK09-09
Creators: name: Kasaya, Takafumi
Publisher: name: JAMSTEC
Year: 2009
Subjects: subject: oceans
subject: Cruise report
subject: S/V YOKOSUKA

description: [CRUISE REPORT] This document is a preliminary report of YK09-09 on S/V YOKOSUKA from 2009-07-18 to 2009-07-28.
Chiral matrix model of the semi-Quark Gluon Plasma in QCD
Creators: name: Pisarski, Robert D.
name: Skokov, Vladimir V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A chiral matrix model applicable to QCD with 2+1 flavors is developed. This requires adding a SU(3)_L x SU(3)_R x Z(3)_A nonet of scalar fields, with both parities, and coupling these to quarks through a Yukawa coupling, y. Treating the scalar fields in mean field approximation, the effective Lagrangian is computed by integrating out quarks to one loop order. In addition to the usual symmetry breaking term, linear in the current quark mass m_qk, at a nonzero temperature T it is necessary to add a new term, ~ m_qk T^2. The parameters of the gluon part of the matrix model are identical to that for the pure glue theory without quarks. The parameters in the chiral matrix model are fixed by the values, at zero temperature, of the pion decay constant and the masses of the pions, kaons, eta, and eta'. The temperature for the chiral crossover at T_chi = 155 MeV is determined by adjusting the Yukawa coupling y. We find reasonable agreement with the results of numerical simulations on the lattice for the pressure and related quantities. In the chiral limit, besides the divergence in the chiral susceptibility there is also a milder divergence in the susceptibility between the Polyakov loop and the chiral order parameter, with critical exponent beta - 1. We compute derivatives with respect to a quark chemical potential to determine the susceptibilities for baryon number, the chi_2n. Especially sensitive tests are provided by chi_4 - chi_2 and by chi_6, which changes in sign about T_chi. The behavior of the susceptibilities in the chiral matrix model strongly suggests that as the temperature increases from T_chi, that the transition to deconfinement is significantly quicker than indicated by the measurements of the (renormalized) Polyakov loop on the lattice.
description: 69 pages, 22 figures; version published in PRD
Is the remnant of GW190425 a strange quark star?
Creators: name: Sedaghat, J.
name: Zebarjad, S. M.
name: Bordbar, G. H.
name: Panah, B. Eslam
name: Moradi, R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This study investigates the effects of different QCD models on the structure of strange quark stars (SQS). In these models, the running coupling constant has a finite value in the infrared region of energy. By imposing some constraints on the strange quark matter (SQM) and exploiting the analytic and background perturbation theories, the equations of states for the SQM are obtained. Then, the properties of SQSs in general relativity are evaluated. By using component masses of GW190425 \cite{Abbott2020ApJL} as well as some conversion relations between the baryonic mass and the gravitational mass, the remnant mass of GW190425 is obtained. Our results for the maximum gravitational mass of SQS are then compared with the remnant mass of GW190425. The results indicate that the obtained maximum gravitational masses are comparable to the remnant mass of GW190425. Therefore, it is proposed that the remnant mass of GW190425 might be a SQS.
description: 12 pages, 7 figures, 5 tables
title: R/V Kaiyo Cruise Report KY08-06
Creators: name: Obana, Koichiro
Publisher: name: JAMSTEC
Year: 2008
Subjects: subject: oceans
subject: Cruise report
subject: R/V KAIYO

description: [CRUISE REPORT] This document is a preliminary report of KY08-06 on R/V KAIYO from 2008-07-23 to 2008-07-31.
title: R/V Kaiyo Cruise Report KY08-04 FY2008 seismic experiments in Izu-Ogasawara area
Creators: name: Kaiho, Yuka
Publisher: name: JAMSTEC
Year: 2008
Subjects: subject: oceans
subject: Cruise report
subject: R/V KAIYO

description: [CRUISE REPORT] This document is a preliminary report of KY08-04 on R/V KAIYO from 2008-05-14 to 2008-06-09.
title: R/V Kairei Cruise Report KR08-16
Creators: name: Fujie, Gou
Publisher: name: JAMSTEC
Year: 2008
Subjects: subject: oceans
subject: Cruise report
subject: R/V KAIREI

description: [CRUISE REPORT] This document is a preliminary report of KR08-16 on R/V KAIREI from 2008-12-07 to 2008-12-25.
title: Kairei Cruise Report KR08-15
Creators: name: Shiobara, Hajime
Publisher: name: JAMSTEC
Year: 2008
Subjects: subject: oceans
subject: Cruise report
subject: R/V KAIREI

description: [CRUISE REPORT] This document is a preliminary report of KR08-15 on R/V KAIREI from 2008-11-15 to 2008-12-02.
title: R/V Kairei Cruise Report KR08-E03
Creators: name: Yamashita, Mikiya
Publisher: name: JAMSTEC
Year: 2008
Subjects: subject: oceans
subject: Cruise report
subject: R/V KAIREI

description: [CRUISE REPORT] This document is a preliminary report of KR08-E03 on R/V KAIREI from 2008-11-02 to 2008-11-11.
$T\bar T$ deformation on multiquantum mechanics and regenesis
Creators: name: He, Song
name: Xian, Zhuo-Yu
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the $T\bar T$ deformation on multiquantum mechanical systems. By introducing dynamical coordinate transformation, we reformulate the one-dimensional $T\bar T$ deformation of generic quantum mechanical systems, which is consistent with the previous proposal in the literature. We further study the thermo-field-double state under the $T\bar T$ deformation on these systems, which include the conformal quantum mechanical system, the Sachdev-Ye-Kitaev model, and the model satisfying eigenstate thermalization hypothesis. We find common regenesis phenomena in which the signal injected into one local system can regenerate from the other local system. From the $AdS_2/CFT_1$ perspective, we study the deformation of Jackiw-Teitelboim gravity governed by Schwarzian action and find that these regenesis phenomena are realized by exchanging boundaries graviton via the nonlocal $T\bar T$ coupling.
description: 21 pages, 5 figures, minor revision, published version
Electronic properties of bismuth nanostructures
Creators: name: König, Christian
name: Greer, James C.
name: Fahy, Stephen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The passivation of thin Bi(1 1 1) films with hydrogen and oxide capping layers is investigated from first principles. Considering termination-related changes of the crystal structure, we show how the bands and density of states are affected. In the context of the much discussed semimetal-to-semiconductor transition and the band topology of the bulk material, we consider the effects of confinement in the whole Brillouin zone and go beyond standard density functional theory by including many-body interactions via the G$_0$W$_0$ approximation. The conductivity of unterminated films is calculated via the Boltzmann transport equation using the simple constant relaxation time approximation and compared to experimental observations that have suggested a two-channel model.
Effective drilling and filling of tame hyperbolic 3-manifolds
Creators: name: Futer, David
name: Purcell, Jessica S.
name: Schleimer, Saul
Publisher: name: arXiv
Year: 2021
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57K32, 30F40

description: We give effective bilipschitz bounds on the change in metric between thick parts of a cusped hyperbolic 3-manifold and its long Dehn fillings. In the thin parts of the manifold, we give effective bounds on the change in complex length of a short closed geodesic. These results quantify the filling theorem of Brock and Bromberg, and extend previous results of the authors from finite volume hyperbolic 3-manifolds to any tame hyperbolic 3-manifold. To prove the main results, we assemble tools from Kleinian group theory into a template for transferring theorems about finite-volume manifolds into theorems about infinite-volume manifolds. We also prove and apply an infinite-volume version of the 6-Theorem.
description: 36 pages, 2 figures. In v3, theorems and definitions were renumbered to align with journal style. To appear in Commentarii Mathematici Helvetici
title: KR08-13 Cruise in the Nankai Trough off Muroto
Creators: name: Kinoshita, Masataka
Publisher: name: JAMSTEC
Year: 2008
Subjects: subject: oceans
subject: Cruise report
subject: R/V KAIREI

description: [CRUISE REPORT] This document is a preliminary report of KR08-13 on R/V KAIREI from 2008-10-05 to 2008-10-12.
title: Cruise Report of KR08-12 R/V KAIREI & ROV KAIKO 7000 II
Creators: name: Sakuma, Atsushi
Publisher: name: JAMSTEC
Year: 2008
Subjects: subject: oceans
subject: Cruise report
subject: R/V KAIREI

description: [CRUISE REPORT] This document is a preliminary report of KR08-12 on R/V KAIREI from 2008-10-01 to 2008-10-04.