cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The rotating Morse potential model for diatomic molecules in the tridiagonal J-matrix representation: I. Bound states
Creators: name: Nasser, I.
name: Abdelmonem, M. S.
name: Bahlouli, H.
name: Alhaidari, A. D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: This is the first in a series of articles in which we study the rotating Morse potential model for diatomic molecules in the tridiagonal J-matrix representation. Here, we compute the bound states energy spectrum by diagonalizing the finite dimensional Hamiltonian matrix of H2, LiH, HCl and CO molecules for arbitrary angular momentum. The calculation was performed using the J-matrix basis that supports a tridiagonal matrix representation for the reference Hamiltonian. Our results for these diatomic molecules have been compared with available numerical data satisfactorily. The proposed method is handy, very efficient, and it enhances accuracy by combining analytic power with a convergent and stable numerical technique.
description: 18 Pages, 6 Tables, 4 Figures
Prosthechea bohnkiana Castro-Neto & Carr 2005
Creators: name: Vieira, Tiago Luiz
name: Berg, Cássio Van Den
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Prosthechea
Prosthechea bohnkiana

description: Prosthechea bohnkiana Castro-Neto & Carr (2005: 53).
Type:— BRAZIL. Bahia: municipality of São José da Vitória, elevation approximately 700–1000 m, s.d., Castro Neto 7 (holotype: SP, not found). Lectotype (here designated): Line drawing reproduced in Castro-Neto & Carr (2005: 53). Epitype (here designated):— BRAZIL. Bahia: Buerarema, 700–1000 m, February–March 2004, E. Bohnk s.n. (SP 369769!, barcode SP 010354).
description: Published as part of Vieira, Tiago Luiz & Berg, Cássio Van Den, 2020, Typification of three names of Brazilian Prosthechea (Orchidaceae: Laeliinae), pp. 213-220 in Phytotaxa 438 (3) on page 217, DOI: 10.11646/phytotaxa.438.3.6, http://zenodo.org/record/13872934
Skein Theory and Topological Quantum Registers: Braiding Matrices and Topological Entanglement Entropy of Non-Abelian Quantum Hall States
Creators: name: Hikami, Kazuhiro
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study topological properties of quasi-particle states in the non-Abelian quantum Hall states. We apply a skein-theoretic method to the Read--Rezayi state whose effective theory is the SU(2)_K Chern--Simons theory. As a generalization of the Pfaffian (K=2) and the Fibonacci (K=3) anyon states, we compute the braiding matrices of quasi-particle states with arbitrary spins. Furthermore we propose a method to compute the entanglement entropy skein-theoretically. We find that the entanglement entropy has a nontrivial contribution called the topological entanglement entropy which depends on the quantum dimension of non-Abelian quasi-particle intertwining two subsystems.
description: 42 pages, many eps files
Direct measurement of topological invariants through temporal adiabatic evolution of bulk states in the synthetic Brillouin zone
Creators: name: Chen, Zhao-Xian
name: Zhang, Yuan-hong
name: Sun, Xiao-Chen
name: Zhang, Ruo-Yang
name: Tang, Jiang-Shan
name: Yang, Xin
name: Zhu, Xue-Feng
name: Lu, Yan-Qing
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Mathematically, topological invariants arise from the parallel transport of eigenstates on the energy bands, which, in physics, correspond to the adiabatic dynamical evolution of transient states. It determines the presence of boundary states, while lacking direct measurements. Here, we develop time-varying programmable coupling circuits between acoustic cavities to mimic the Hamiltonians in the Brillouin zone, with which excitation and adiabatic evolution of bulk states are realized in a unit cell. By extracting the Berry phases of the bulk band, topological invariants, including the Zak phase for the SSH model and the Chern number for the AAH model, are obtained convincingly. The bulk state evolution also provides insight into the topological charges of our newly developed non-Abelian models, which are also verified by observing the adiabatic eigenframe rotation. Our work not only provides a general recipe for telling various topological invariants but also sheds light on transient acoustic wave manipulations.
description: 16 pages, 4 figures
Prym varieties and applications
Creators: name: Lesfari, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Geometry (math.AG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 14Q05,14H40,70H06.

description: The classical definition of Prym varieties deals with the unramified covers of curves. The aim of the present paper is to give explicit algebraic descriptions of the Prym varieties associated to ramified double covers of algebraic curves. We make a careful study of the connection with the concept of algebraic completely integrable systems and we apply the methods to some problems of Mathematical Physics.
description: 30 Pages
Application and testing of modern critical theory of architecture at the Sedgewick Library
Creators: name: Martinson, Thomas
Publisher: name: University of British Columbia
Year: 2010

description: The thesis deals with the application and testing of modern critical theory of architecture at the Sedgewick Library. Through the works of John Ruskin, Ludwig Mies van der Rohe and Robert Venturi, selected as prototypes of modern architectural thought from the extensive literature their formula or code for good architecture was determined. These formulas or codes were then applied to an assessment of the design of the Sedgewick Library, an award winning design representative of the best architectural work in Canada during the contemporary architectural period.
Distributed Decision Through Self-Synchronizing Sensor Networks in the Presence of Propagation Delays and Asymmetric Channels
Creators: name: Scutari, Gesualdo
name: Barbarossa, Sergio
name: Pescosolido, Loreto
Publisher: name: arXiv
Year: 2007
Subjects: subject: Multiagent Systems (cs.MA)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: In this paper we propose and analyze a distributed algorithm for achieving globally optimal decisions, either estimation or detection, through a self-synchronization mechanism among linearly coupled integrators initialized with local measurements. We model the interaction among the nodes as a directed graph with weights (possibly) dependent on the radio channels and we pose special attention to the effect of the propagation delay occurring in the exchange of data among sensors, as a function of the network geometry. We derive necessary and sufficient conditions for the proposed system to reach a consensus on globally optimal decision statistics. One of the major results proved in this work is that a consensus is reached with exponential convergence speed for any bounded delay condition if and only if the directed graph is quasi-strongly connected. We provide a closed form expression for the global consensus, showing that the effect of delays is, in general, the introduction of a bias in the final decision. Finally, we exploit our closed form expression to devise a double-step consensus mechanism able to provide an unbiased estimate with minimum extra complexity, without the need to know or estimate the channel parameters.
description: To be published on IEEE Transactions on Signal Processing
Prosthechea carrii Castro-Neto & Campacci 2001
Creators: name: Vieira, Tiago Luiz
name: Berg, Cássio Van Den
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Prosthechea
Prosthechea carrii

description: Prosthechea carrii Castro-Neto & Campacci (2001: 74).
Type:— BRAZIL. Bahia: Serra do Sincorá, 1200–1600 m, March 2000, V. P. Castro s.n. (holotype: SP, lost). Lectotype (here designated): Line drawing reproduced in Castro-Neto & Campacci (2001: 76). Epitype (here designated):— BRAZIL. Bahia: Barra da Estiva, Morro do Ouro, 1500 m, 30 September 2017, T. L. Vieira & P. G. Ribeiro 319 (epitype: HUEFS 254342; isoepitypes: ALCB, SP).
description: Published as part of Vieira, Tiago Luiz & Berg, Cássio Van Den, 2020, Typification of three names of Brazilian Prosthechea (Orchidaceae: Laeliinae), pp. 213-220 in Phytotaxa 438 (3) on page 217, DOI: 10.11646/phytotaxa.438.3.6, http://zenodo.org/record/13872934
A Finite Element Analysis Model for Magnetomotive Ultrasound Elastometry Magnet Design with Experimental Validation
Creators: name: Nyakunu, Jacquelline
name: Piatnichouk, Christopher T.
name: Russell, Henry C.
name: van Duijnhoven, Niels J.
name: Levy, Benjamin E.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Magnetomotive ultrasound (MMUS) using magnetic nanoparticle contrast agents has shown promise for thrombosis imaging and quantitative elastometry via magnetomotive resonant acoustic spectroscopy (MRAS). Young's modulus measurements of smaller, stiffer thrombi require an MRAS system capable of generating forces at higher temporal frequencies. Solenoids with fewer turns, and thus less inductance, could improve high frequency performance, but the reduced force may compromise results. In this work, a computational model capable of assessing the effectiveness of MRAS elastometry magnet configurations is presented and validated. Finite element analysis (FEA) was used to model the force and inductance of MRAS systems. The simulations incorporated both solenoid electromagnets and permanent magnets in three-dimensional steady-state, frequency domain, and time domain studies. The model successfully predicted that a configuration in which permanent magnets were added to an existing MRAS system could be used to increase the force supplied. Accordingly, the displacement measured in a magnetically labeled validation phantom increased by a factor of $2.2 \pm 0.3$ when the force was predicted to increase by a factor of $2.2 \pm 0.2$. The model additionally identified a new solenoid configuration consisting of four smaller coils capable of providing sufficient force at higher driving frequencies. These results indicate two methods by which MRAS systems could be designed to deliver higher frequency magnetic forces without the need for experimental trial and error. Either the number of turns within each solenoid could be reduced while permanent magnets are added at precise locations, or a larger number of smaller solenoids could be used. These findings overcome a key challenge toward the goal of MMUS thrombosis elastometry, and simulation files are provided online for broader experimentation.
description: 12 pages, 8 figures. This manuscript has been revised from version v1 via the peer review process. It has been accepted in its current form and is awaiting publication at Biomedical Physics and Engineering Express
Slow-roll, acceleration, the Big Rip and WKB approximation in NLS-type formulation of scalar field cosmology
Creators: name: Gumjudpai, Burin
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Aspects of non-linear Schrödinger-type (NLS) formulation of scalar (phantom) field cosmology on slow-roll, acceleration, WKB approximation and Big Rip singularity are presented. Slow-roll parameters for the curvature and barotropic density terms are introduced. We reexpress all slow-roll parameters, slow-roll conditions and acceleration condition in NLS form. WKB approximation in the NLS formulation is also discussed when simplifying to linear case. Most of the Schrödinger potentials in NLS formulation are very slowly-varying, hence WKB approximation is valid in the ranges. In the NLS form of Big Rip singularity, two quantities are infinity in stead of three. We also found that approaching the Big Rip, $w_{\rm eff}\to -1 + {2}/{3q}$, $(q<0)$ which is the same as effective phantom equation of state in the flat case.
description: [7 pages, no figure, more reference added, accepted by JCAP]
Prosthechea elisae Chiron & Castro-Neto 2003
Creators: name: Vieira, Tiago Luiz
name: Berg, Cássio Van Den
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Prosthechea
Prosthechea elisae

description: Prosthechea elisae Chiron & Castro-Neto (2003: 176).
Type:— BRAZIL. Espírito Santo: Domingos Martins, 500 m, 20º21.7’S 40º39.6’W, May 2003, Castro Neto s.n. (SP, not found). Lectotype (here designated): BRAZIL. Espírito Santo: Domingos Martins, 500–600 m, 20º22’S 40º40’W, May 2003, Chiron 3415 (LY barcode LY0027809!).
description: Published as part of Vieira, Tiago Luiz & Berg, Cássio Van Den, 2020, Typification of three names of Brazilian Prosthechea (Orchidaceae: Laeliinae), pp. 213-220 in Phytotaxa 438 (3) on page 217, DOI: 10.11646/phytotaxa.438.3.6, http://zenodo.org/record/13872934
A widely tunable parametric amplifier based on a SQUID array resonator
Creators: name: Castellanos-Beltran, M. A.
name: Lehnert, K. W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We create a Josephson parametric amplifier from a transmission line resonator whose inner conductor is made from a series SQUID array. By changing the magnetic flux through the SQUID loops, we are able to adjust the circuit's resonance frequency and, consenquently, the center of the amplified band, between 4 and 7.8 GHz. We observe that the amplifier has gains as large as 28 dB and infer that it adds less than twice the input vacuum noise.
description: 9 pages, 4 figures, submitted to Applied Physics Letters
The ILC Energy Requirements from the Constraints on New Boson Production at the Tevatron
Creators: name: Chizhov, Mihail V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Direct constraints on the masses of new heavy bosons by the Tevatron data are discussed. Some excesses in the experimental data are interpreted as a resonance production of new charged and `leptophobic' neutral chiral bosons with masses around 500 GeV and 700 GeV, respectively. The interpretation was provided on the basis of the theoretical model, proposed by the author about 15 years ago. New Tevatron data and the LHC results will definitely confirm or reject this interpretation. The ILC with an energy above 1 TeV would be an ideal place to produce and to study the properties of these particles.
description: 6 pages, 5 figures, talk given at the LCWS/ILC 2007 workshop
Cataclysta peribocalis , Walker 1859
Creators: name: Chen, Fuqiang
name: Wu, Chunsheng
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Pyralidae
Cataclysta
Cataclysta peribocalis

description: 3.1 The peribocalis group
Diagnosis (Table 1). The species group can be easily diagnosed by its four eyespots present on the outer margin of hindwing. These eyespots are distinct and larger than those in gibbosalis group.
description: Published as part of Chen, Fuqiang & Wu, Chunsheng, 2019, A taxonomic review of the genus Eoophyla Swinhoe, 1900 (Lepidoptera: Crambidae: Acentropinae) from China, pp. 212-239 in Zoological Systematics 44 (3) on page 215, DOI: 10.11865/zs.201925, http://zenodo.org/record/4617778
Faraday spectroscopy of atoms confined in a dark optical trap
Creators: name: Terraciano, Matthew L.
name: Bashkansky, Mark
name: Fatemi, Fredrik
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate Faraday spectroscopy with high duty cycle and sampling rate using atoms confined to a blue-detuned optical trap. Our trap consists of a crossed pair of high-charge-number hollow laser beams, which forms a dark, box-like potential. We have used this to measure transient magnetic fields in a 500-micron-diameter spot over a 400 ms time window with nearly unit duty cycle at a 500 Hz sampling rate. We use these measurements to quantify and compensate time-varying magnetic fields to ~10 nT per time sample.
description: 6 pages, 8 figures Accepted in Phys. Rev. A
Ambrose Monell Cryp Collection, American Museum of Natural History, Sackler Institute for Comparative Genomics Central Park West at 79th Street New York, NY 10024-5192
Creators: name: Heed, Collection.
Publisher: name: Collection content.
Year: 2018
Subjects: Biodiversity
Taxonomy
fruit flies
flies
Animalia
Arthropoda
Insecta
Diptera

description: Uploaded by Plazi for TaxoDros. We do not have abstracts.
Some variables affecting belief in a pro-food additive message
Creators: name: Campbell, Shelagh Ann
Publisher: name: University of British Columbia
Year: 2010

description: Several surveys document the misinformation that exists among consumers about the use and safety of food additives. It is in the interests of a well-informed consumer that food scientists attempt to explain controversial food issues in an understandable manner. The objective is for consumers to have the information available in order to make informed choices in the marketplace. Questions have been raised as to the acceptance of information designed to counteract the misinformation. The problem is that much of this counter-misinformation is directly opposite to the current negative societal stereotype about food additives. This research examined the role of the traditional attitude change variable source credibility, as well as receiver attitude towards food additives, as factors influencing belief in a pro-food additive message. An attribute - treatment - interaction (ATI) model was used for the design of the study and results evaluated by linear multiple regression analysis. A questionnaire consisting of a measure of attitude; a measure of belief in food additive statements; a pro-food additive message and a measure of belief in the message was developed. The message was attributed to one of three sources that had been previously rated as credible regarding information about food additives. For the control, the message was attributed to no particular source. Results indicated that none of the sources were able to produce strong belief in the pro-food additive message. The attitude; the belief in statements and the sources accounted for 49.23 % of the variance in belief in the message. An interaction effect between source and attitude was found to be statistically significant. Based on this limited study, it appeared that, for the population tested, the nutritionist had the same effect on belief in the message, regardless of the attitude of the receiver of the message. For receivers who held anti-food additive attitudes, the nutritionist was most effective at influencing belief in the message.
Line and Mean Opacities for Ultracool Dwarfs and Extrasolar Planets
Creators: name: Freedman, Richard S.
name: Marley, Mark S.
name: Lodders, Katharina
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Opacities and chemical abundance data are crucial ingredients of ultracool dwarf and extrasolar giant planet atmosphere models. We report here on the detailed sources of molecular opacity data employed by our group for this application. We also present tables of Rosseland and Planck mean opacities which are of use in some studies of the atmospheres, interiors, and evolution of planets and brown dwarfs. For the tables presented here we have included the opacities of important atomic and molecular species, including the alkali elements, pressure induced absorption by hydrogen, and other significant opacity sources but neglect opacity from condensates. We report for each species how we have assembled molecular line data from a combination of public databases, laboratory data that is not yet in the public databases, and our own numerical calculations. We combine these opacities with abundances computed from a chemical equilibrium model using recently revised solar abundances to compute mean opacities. The chemical equilibrium calculation accounts for the settling of condensates in a gravitational field, and is applicable to ultracool dwarf and extrasolar planetary atmospheres, but not circumstellar disks. We find that the inclusion of alkali atomic opacity substantially increases the mean opacities over those currently in the literature at densities relevant to the atmospheres and interiors of giant planets and brown dwarfs. We provide our opacity tables for public use and discuss their limitations.
description: 32 pages, 6 figures, accepted for publication in Astrphysical Journal Supplement, units revised, now includes on-line only data files (available in "source" package from "other formats" link)
Tensor tree learns hidden relational structures in data to construct generative models
Creators: name: Harada, Kenji
name: Okubo, Tsuyoshi
name: Kawashima, Naoki
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Artificial Intelligence (cs.AI)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Based on the tensor tree network with the Born machine framework, we propose a general method for constructing a generative model by expressing the target distribution function as the amplitude of the quantum wave function represented by a tensor tree. The key idea is dynamically optimizing the tree structure that minimizes the bond mutual information. The proposed method offers enhanced performance and uncovers hidden relational structures in the target data. We illustrate potential practical applications with four examples: (i) random patterns, (ii) QMNIST handwritten digits, (iii) Bayesian networks, and (iv) the pattern of stock price fluctuation pattern in S&P500. In (i) and (ii), the strongly correlated variables were concentrated near the center of the network; in (iii), the causality pattern was identified; and in (iv), a structure corresponding to the eleven sectors emerged.
description: 10 pages, 3 figures
XMM-Newton observation of the deep minimum state of PG 2112+059: A spectrum dominated by reflection from the accretion disk?
Creators: name: Schartel, N.
name: Rodriguez-Pascual, P. M.
name: Santos-Lleo, M.
name: Ballo, L.
name: Clavel, J.
name: Guainazzi, M.
name: Jimenez-Bailon, E.
name: Piconcelli, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyse a 75ks XMM-Newton observation of PG 2112+059 performed in November 2005 and compare it with a 15ks XMM-Newton observation taken in May 2003. PG 2112+059 was found in a deep minimum state as its 0.2-12 keV flux decreased by a factor of 10 in comparison to the May 2003 observation. During the deep minimum state the spectra show strong emission in excess of the continuum in the 3-6 keV region. The excess emission corresponds to an EW = 26.1 keV whereas its shape resembles that of heavily absorbed objects. The spectra of both observations of PG 2112+059 can be explained statistically by a combination of two absorbers where one shows a high column density, $N_{H} \sim 4.5 \times 10^{23} cm^{-2}$, and the other high ionisation parameters. As the ionisation parameter of the high flux state, $ξ\sim 34 erg cm s^{-1}$, is lower than the value found for the deep minimum state, $ξ\sim 110 erg cm s^{-1}$, either the absorbers are physically different or the absorbing material is moving with respect to the X-ray source. The spectra can also be explained by a continuum plus X-ray ionised reflection on the accretion disk, seen behind a warm absorber. The ionisation parameter of the high state ($ξ\sim 5.6 erg cm s^{-1}$) is higher than the ionisation parameter of the deep minimum state ($ξ\sim 0.2 erg cm s^{-1}$), as expected for a stationary absorber. The values found for the ionisation parameters are in the range typical for AGNs. The spectra observed during the deep minimum state are reflection dominated and show no continuum emission. These can be understood in the context of light bending near the supermassive black hole as predicted by Minutti and Fabian.
description: 13 pages, 3 figures, A&A latex, accepted for publication in Astronomy & Astrophysics
Note on the attraction of an ellipsoid in a spherical universe
Creators: name: Albouy, Alain
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 70F15, 31B99

description: A classical theorem states that two confocal ellipsoids, each of them endowed with a surface distribution of mass which is called homeoidal, exert the same Newtonian force on an exterior point if they have the same total mass. We extend this theorem to the spherical geometry by adapting a forgotten proof by Chasles of the classical theorem. Compared to the existing results, this is a slightly stronger statement with a much shorter proof.
description: 9 pages, 2 figures
The Structure of Narrative: the Case of Film Scripts
Creators: name: Murtagh, Fionn
name: Ganz, Adam
name: McKie, Stewart
Publisher: name: arXiv
Year: 2008
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: I.5.4; I.2.7; H.3.1

description: We analyze the style and structure of story narrative using the case of film scripts. The practical importance of this is noted, especially the need to have support tools for television movie writing. We use the Casablanca film script, and scripts from six episodes of CSI (Crime Scene Investigation). For analysis of style and structure, we quantify various central perspectives discussed in McKee's book, "Story: Substance, Structure, Style, and the Principles of Screenwriting". Film scripts offer a useful point of departure for exploration of the analysis of more general narratives. Our methodology, using Correspondence Analysis, and hierarchical clustering, is innovative in a range of areas that we discuss. In particular this work is groundbreaking in taking the qualitative analysis of McKee and grounding this analysis in a quantitative and algorithmic framework.
description: 28 pages, 7 figures, 21 references
Panicum virgatum 1950-2016 Response Curves
Creators: name: Frailey, Anna
Publisher: name: figshare
Year: 2021
Subjects: subject: Plant Biology
subject: FOS: Biological sciences
subject: Atmospheric Sciences
subject: FOS: Earth and related environmental sciences

description: Panicum virgatum 1950-2016 Response Curves
Stochastically bundled dissipators for the quantum master equation
Creators: name: Adhikari, Sayak
name: Baer, Roi
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The Lindblad master equation is a fundamental tool for describing the evolution of open quantum systems, but its computational complexity poses a significant challenge, especially for large systems. This article introduces a stochastic representation of the Lindblad dissipator that addresses this challenge by bundling the Lindblad operators. We demonstrate the effectiveness of this method by considering a Morse oscillator coupled to a spin bath. Our numerical experiments show that a small number of stochastically bundled operators can accurately capture the system's dynamics, even when the Hilbert space dimension is large. This method offers a new perspective on open quantum systems and provides a computationally efficient way to simulate their dynamics.
A Reconstruction Algorithm for Photoacoustic Imaging based on the Nonuniform FFT
Creators: name: Haltmeier, M.
name: Scherzer, O.
name: Zangerl, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 35L05, 65R32, 65T50, 92C55.

description: Fourier reconstruction algorithms significantly outperform conventional back-projection algorithms in terms of computation time. In photoacoustic imaging, these methods require interpolation in the Fourier space domain, which creates artifacts in reconstructed images. We propose a novel reconstruction algorithm that applies the one-dimensional nonuniform fast Fourier transform to photoacoustic imaging. It is shown theoretically and numerically that our algorithm avoids artifacts while preserving the computational effectiveness of Fourier reconstruction.
description: 22 pages, 8 figures
title: Formulaires Mésocentre Clermont-Auvergne
Publisher: name: CNRS Inist-  Institut de l'Information Scientifique et Technique
Year: 2024

description: Identifier facilement les services du Mésocentre Clermont-Auvergne, simplifier la saisie dans le PGD et faire une demande de ressources à partir de DMP OPIDoR
Connecting LHC, ILC, and Quintessence
Creators: name: Chung, Daniel J. H.
name: Everett, Lisa L.
name: Kong, Kyoungchul
name: Matchev, Konstantin T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: If the cold dark matter consists of weakly interacting massive particles (WIMPs), anticipated measurements of the WIMP properties at the Large Hadron Collider (LHC) and the International Linear Collider (ILC) will provide an unprecedented experimental probe of cosmology at temperatures of order 1 GeV. It is worth emphasizing that the expected outcome of these tests may or may not be consistent with the picture of standard cosmology. For example, in kination-dominated quintessence models of dark energy, the dark matter relic abundance can be significantly enhanced compared to that obtained from freeze out in a radiation-dominated universe. Collider measurements then will simultaneously probe both dark matter and dark energy. In this article, we investigate the precision to which the LHC and ILC can determine the dark matter and dark energy parameters under those circumstances. We use an illustrative set of four benchmark points in minimal supergravity in analogy with the four LCC benchmark points. The precision achievable together at the LHC and ILC is sufficient to discover kination-dominated quintessence, under the assumption that the WIMPs are the only dark matter component. The LHC and ILC can thus play important roles as alternative probes of both dark matter and dark energy.
description: 38 pages, 9 figures
Three-loop order approach to flat polymerized membranes
Creators: name: Metayer, S.
name: Mouhanna, D.
name: Teber, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive the three-loop order renormalization group equations that describe the flat phase of polymerized membranes within the modified minimal subtraction scheme, following the pioneering one-loop order computation of Aronovitz and Lubensky [Phys. Rev. Lett. 60, 2634 (1988)] and the recent two-loop order one of Coquand, Mouhanna and Teber [Phys. Rev. E 101, 062104 (2020)]. We analyze the fixed points of these equations and compute the associated field anomalous dimension $η$ at three-loop order. Our results display a marked proximity with those obtained using nonperturbative techniques and reexpanded in powers of $ε=4-D$. Moreover, the three-loop order value that we get for $η$ at the stable fixed point, $η=0.8872$, in $D=2$, is compatible with known theoretical results and within the range of accepted numerical values.
description: (v2) Published in PRE Letter, some additions and minor modifications as per referee's comments, slight change in title as per editor's suggestion, no change in results. (v1) 10 pages
Eoophyla gibbosalis
Creators: name: Chen, Fuqiang
name: Wu, Chunsheng
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Crambidae
Eoophyla
Eoophyla gibbosalis

description: 3.2 The gibbosalis group
Diagnosis (Table 1). The species group usually has three eyespots present along the outer margin of hindwing, sometimes the lower one to two eyespots reduced, only with a blurry trace. The eyespots are smaller the peribocalis group.
Remarks. The species group was reported by Mey & Speidel (1999), including 9 species and 1 subspecies, then Speidel, Mey & Schulze (2002) and Li, You & Wang (2003) reported another 3 species. The species group is mostly distributed in Asia continent, except E. gibbosalis distributed in Indonesis and Phillippines.
description: Published as part of Chen, Fuqiang & Wu, Chunsheng, 2019, A taxonomic review of the genus Eoophyla Swinhoe, 1900 (Lepidoptera: Crambidae: Acentropinae) from China, pp. 212-239 in Zoological Systematics 44 (3) on page 224, DOI: 10.11865/zs.201925, http://zenodo.org/record/4617778
Sorghastrum 1950-2016 Response Curves
Creators: name: Frailey, Anna
Publisher: name: figshare
Year: 2021
Subjects: subject: Plant Biology
subject: FOS: Biological sciences
subject: Atmospheric Sciences
subject: FOS: Earth and related environmental sciences

description: Sorghastrum 1950-2016 Response Curves
Mapping the Asymmetric Thick Disk: The Hercules Thick Disk Cloud
Creators: name: Larsen, Jeffrey A.
name: Humphreys, Roberta M.
name: Cabanela, Juan E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The stellar asymmetry of faint thick disk/inner halo stars in the first quadrant first reported by Larsen & Humphreys (1996) and investigated further by Parker et al. (2003, 2004) has been recently confirmed by SDSS (Juric et al. 2008). Their interpretation of the excess in the star counts as a ringlike structure, however, is not supported by critical complimentary data in the fourth quadrant not covered by SDSS. We present stellar density maps from the Minnesota Automated Plate Scanner (MAPS) Catalog of the POSS I showing that the overdensity does not extend into the fourth quadrant. The overdensity is most probably not a ring. It could be due to interaction with the disk bar, evidence for a triaxial thick disk, or a merger remnant/stream. We call this feature the Hercules Thick Disk Cloud.
description: 11 pages, 5 figures, to be published in Astrophysical Journal Letters
Classical string solutions in Non-Relativistic AdS$_5\times$S$^5$: Closed and Twisted sectors
Creators: name: Fontanella, Andrea
name: García, Juan Miguel Nieto
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We find classical closed string solutions to the non-relativistic AdS$_5\times$S$^5$ string theory which are the analogue of the BMN and GKP solutions for the relativistic theory. We show that non-relativistic AdS$_5\times$S$^5$ string theory admits a $\mathbb{Z}_2$ orbifold symmetry which allows us to impose twisted boundary conditions. Among the solutions in the twisted sector, we find the one around which the semiclassical expansion in arXiv:2102.00008 takes place.
description: 41 pages, 5 figures. v2: typos corrected, few comments and references added. Matching the published version
Maxwell equations in Riemannian space-time, geometry effect on material equations in media
Creators: name: Red'kov, V. M.
name: Tokarevskaya, N. G.
name: Bychkouskaya, E. M.
name: Spix, George J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Physics (physics.class-ph)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The known possibility to consider the (vacuum) Maxwell equations in a curved space-time as Maxwell equations in flat space-time(Mandel'stam L.I., Tamm I.E.) taken in an effective media the properties of which are determined by metrical structure of the curved model is studied. Metrical structure of the curved space-time generates effective constitutive equations for electromagnetic fields, the form of four corresponding symmetrical tensors is found explicitly for general case of an arbitrary Riemannian space - time. Four constitutive tensors are not independent and obey some additional constraints between them. Several simple examples are specified in detail:itis given geometrical modeling of the anisotropic media (magnetic crystals) and the geometrical modeling of a uniform media in moving reference frame in the Minkowsky electrodynamics -- the latter is realized trough the use of a non-diagonal metrical tensor determined by 4-vector velocity of the moving uniform media. Also the effective material equations generated by geometry of space of constant curvature (Lobachevsky and Riemann models) are determined.
description: 14 pages, Report to: XIV Annual Seminar Nonlinear Penomena in Complex Systems. Minsk, May 22-25, 2007
ПРЕДПРИНИМАТЕЛЬСТВО И УПРАВЛЕНИЕ В АГРОПРОМЫШЛЕННОМ КОМПЛЕКСЕ В ПЕРИОД И ПОСЛЕ ПАНДЕМИИ
Creators: name: КАРАТАЕВА О. Г.
name: ЗУБКОВА О. В.
Publisher: name: Образование и право
Year: 2020
Subjects: сельское хозяйство
своевременная поддержка
продовольственная безопасность
пандемия коронавируса
внутренние ресурсы
цифровизация
трудовые ресурсы

description: В период карантина по коронавирусу правительством принимаются достаточные меры для сельхозпредприятий. Потребовались эти меры по поддержке агропромышленного комплекса из-за распространения коронавируса. АПК ориентирован на базовые потребности человека, и в этом его преимущество. Первые месяцы кризиса прошли менее проблематично, чем у отраслей сервиса. В сегодняшних непростых условиях важно сохранить набранную динамику в агропромышленном комплексе, уверенность аграриев в стабильной работе, устойчивость операционных связей отрасли. Нужно надежно обеспечить собственный внутренний рынок и оценить, использовать те возможности, которые открываются сейчас для отрасли АПК, включая, экспорт продукции. Значимая задача также на момент пандемии для агропромышленного комплекса — сохранить уровень жизни сельхозработников. В целом, пандемия не повлияла на посевную весной 2020 года, она началась и проходит в рабочем режиме. Работодатели многое делают для того, чтобы обеспечить противоэпидемическую гарантию и защиту от коронавируса работников. Рост внутреннего потребления сельхозпродукции поможет решить глобальную задачу продовольственной безопасности. Увеличение производства зерновых обезопасило страну, в том числе с точки зрения обеспечения собственным сырьем. Требуют внимания и вопросы животноводства, потому что появился спрос, изменились рынки сбыта, и в этой части сельхозпроизводителей, также следует поддержать целым комплексом мер.
Quantitative analysis of phase transitions in two-dimensional XY models using persistent homology
Creators: name: Sale, Nicholas
name: Giansiracusa, Jeffrey
name: Lucini, Biagio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Machine Learning (cs.LG)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Topology (math.AT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We use persistent homology and persistence images as an observable of three different variants of the two-dimensional XY model in order to identify and study their phase transitions. We examine models with the classical XY action, a topological lattice action, and an action with an additional nematic term. In particular, we introduce a new way of computing the persistent homology of lattice spin model configurations and, by considering the fluctuations in the output of logistic regression and k-nearest neighbours models trained on persistence images, we develop a methodology to extract estimates of the critical temperature and the critical exponent of the correlation length. We put particular emphasis on finite-size scaling behaviour and producing estimates with quantifiable error. For each model we successfully identify its phase transition(s) and are able to get an accurate determination of the critical temperatures and critical exponents of the correlation length.
description: 20 pages, 29 figures
Photo-detection using Bose-condensed atoms in a micro trap
Creators: name: Wallentowitz, S.
name: Klimov, A. B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A model of photo-detection using a Bose--Einstein condensate in an atom-chip based micro trap is analyzed. Atoms absorb photons from the incident light field, receive part of the photon momentum and leave the trap potential. Upon counting of escaped atoms within predetermined time intervals, the photon statistics of the incident light is mapped onto the atom-count statistics. Whereas traditional photo-detection theory treats the emission centers of photo electrons as distinguishable, here the centers of escaping atoms are condensed and thus indistinguishable atoms. From this an enhancement of the photon-number resolution as compared to the commonly known counting formula is derived.
description: 11 pages, 5 figures; revised version
Dynamical Masses for Pre-Main Sequence Stars: A Preliminary Physical Orbit for V773 Tau A
Creators: name: Boden, A. F.
name: Torres, G.
name: Sargent, A. I.
name: Akeson, R. L.
name: Carpenter, J. M.
name: Boboltz, D. A.
name: Massi, M.
name: Ghez, A. M.
name: Latham, D. W.
name: Johnston, K. J
name: Menten, K. M.
name: Ros, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on interferometric and radial-velocity observations of the double-lined 51-d period binary (A) component of the quadruple pre-main sequence (PMS) system V773 Tau. With these observations we have estimated preliminary visual and physical orbits of the V773 Tau A subsystem. Among other parameters, our orbit model includes an inclination of 66.0 $\pm$ 2.4 deg, and allows us to infer the component dynamical masses and system distance. In particular we find component masses of 1.54 $\pm$ 0.14 and 1.332 $\pm$ 0.097 M$_{\sun}$ for the Aa (primary) and Ab (secondary) components respectively. Our modeling of the subsystem component spectral energy distributions finds temperatures and luminosities consistent with previous studies, and coupled with the component mass estimates allows for comparison with PMS stellar models in the intermediate-mass range. We compare V773 Tau A component properties with several popular solar-composition models for intermediate-mass PMS stars. All models predict masses consistent to within 2-sigma of the dynamically determined values, though some models predict values that are more consistent than others.
description: ApJ in press; 25 pages, 6 figures; data tables available in journal version
Do Graph Neural Networks Work for High Entropy Alloys?
Creators: name: Zhang, Hengrui
name: Huang, Ruishu
name: Chen, Jie
name: Rondinelli, James M.
name: Chen, Wei
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Graph neural networks (GNNs) have excelled in predictive modeling for both crystals and molecules, owing to the expressiveness of graph representations. High-entropy alloys (HEAs), however, lack chemical long-range order, limiting the applicability of current graph representations. To overcome this challenge, we propose a representation of HEAs as a collection of local environment (LE) graphs. Based on this representation, we introduce the LESets machine learning model, an accurate, interpretable GNN for HEA property prediction. We demonstrate the accuracy of LESets in modeling the mechanical properties of quaternary HEAs. Through analyses and interpretation, we further extract insights into the modeling and design of HEAs. In a broader sense, LESets extends the potential applicability of GNNs to disordered materials with combinatorial complexity formed by diverse constituents and their flexible configurations.
Kaon and pion maximal emission times extraction from the femtoscopy analysis of $5.02 A$ TeV LHC collisions within the integrated hydrokinetic model
Creators: name: Shapoval, V. M.
name: Sinyukov, Yu. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A simple method for the extraction of the times of maximal emission for kaons and pions using the combined fitting of their transverse momentum spectra and the longitudinal interferometry radii dependencies on the pair transverse mass $m_T$ is applied to Pb+Pb collisions at the LHC energy $\sqrt{s_{NN}}=5.02$ TeV. The method is based on the analytical formulas, that were earlier successfully utilized in the studies of Pb+Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV. To test the method, the spectra, radii and particle radiation picture are calculated within the integrated hydrokinetic model (iHKM), that includes all the stages of the matter evolution in high-energy A+A collisions: the system's formation, its thermalization, viscous hydrodynamics evolution, particlization and subsequent hadronic cascade. The model describes and predicts well already published LHC data in "soft physics? kinematic region. Thus, the fitting results for maximal emission times of kaons and pions are compared to the approximate maximal emission time values, estimated based on the emission function plots, obtained in iHKM. The developed simple method is intended for use in experimental analysis of femtoscopy data in relativistic A+A collisions.
description: 17 pages, 10 figures
Measurement of double-parton scattering in inclusive production of four jets with low transverse momentum in proton-proton collisions at $\sqrt{s}$ = 13 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A measurement of inclusive four-jet production in proton-proton collisions at a center-of-mass energy of 13 TeV is presented. The transverse momenta of jets within $\lvertη\rvert$ $\lt$ 4.7 reach down to 35, 30, 25, and 20 GeV for the first-, second-, third-, and fourth-leading jet, respectively. Differential cross sections are measured as functions of the jet transverse momentum, jet pseudorapidity, and several other observables that describe the angular correlations between the jets. The measured distributions show sensitivity to different aspects of the underlying event, parton shower, and matrix element calculations. In particular, the interplay between angular correlations caused by parton shower and double-parton scattering contributions is shown to be important. The double-parton scattering contribution is extracted by means of a template fit to the data, using distributions for single-parton scattering obtained from Monte Carlo event generators and a double-parton scattering distribution constructed from inclusive single-jet events in data. The effective double-parton scattering cross section is calculated and discussed in view of previous measurements and of its dependence on the models used to describe the single-parton scattering background.
description: Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/SMP-20-007 (CMS Public Pages)