cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Relaxation processes in harmonic glasses?
Creators: name: Ruocco, G.
name: Sette, F.
name: Di Leonardo, R.
name: Monaco, G.
name: Sampoli, M.
name: Scopigno, T.
name: Viliani, G.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: A relaxation process, with the associated phenomenology of sound attenuation and sound velocity dispersion, is found in a simulated harmonic Lennard-Jones glass. We propose to identify this process with the so called microscopic (or instantaneous) relaxation process observed in real glasses and supercooled liquids. A model based on the memory function approach accounts for the observation, and allows to relate to each others: 1) the characteristic time and strength of this process, 2) the low frequency limit of the dynamic structure factor of the glass, and 3) the high frequency sound attenuation coefficient, with its observed quadratic dependence on the momentum transfer.
description: 11 pages, 3 figures
On the construction of a quantum channel corresponding to non-commutative graph for a qubit interacting with quantum oscillator
Creators: name: Amosov, G. G.
name: Mokeev, A. S.
name: Pechen, A. N.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider error correction, based on the theory of non-commutative graphs, for a model of a qubit interacting with quantum oscillator. The dynamics of the composite system is governed by the Schrödinger equation which generates positive operator-valued measure (POVM) for the system dynamics. We construct a quantum channel generating the non-commutative graph as a linear envelope of the POVM. The idea is based on applying a generalized version of a quantum channel using the apparatus of von Neumann algebras. The results are analyzes for a non-commutative graph generated by a qubit interacting with quantum oscillator. For this model the quantum anticlique which determines the error correcting subspace has an explicit expression.
description: 6 pages
Structure of the Fulde-Ferrell-Larkin-Ovchinnikov state in two-dimensional superconductors
Creators: name: Shimahara, Hiroshi
Publisher: name: arXiv
Year: 1997
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Nonuniform superconducting state due to strong spin magnetism is studied in two-dimensional type-II superconductors near the second order phase transition line between the normal and the superconducting states. The optimum spatial structure of the orderparameter is examined in systems with cylindrical symmetric Fermi surfaces. It is found that states with two-dimensional structures have lower free energies than the traditional one-dimensional solutions, at low temperatures and high magnetic fields. For s-wave pairing, triangular, square, hexagonal states are favored depending on the temperature, while square states are favored at low temperatures for d-wave pairing. In these states, orderparameters have two-dimensional structures such as square and triangular lattices.
description: 11 pages (LaTeX, revtex.sty), 3 figures; added references
Empirical Game-Theoretic Analysis: A Survey
Creators: name: Wellman, Michael P.
name: Tuyls, Karl
name: Greenwald, Amy
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: In the empirical approach to game-theoretic analysis (EGTA), the model of the game comes not from declarative representation, but is derived by interrogation of a procedural description of the game environment. The motivation for developing this approach was to enable game-theoretic reasoning about strategic situations too complex for analytic specification and solution. Since its introduction over twenty years ago, EGTA has been applied to a wide range of multiagent domains, from auctions and markets to recreational games to cyber-security. We survey the extensive methodology developed for EGTA over the years, organized by the elemental subproblems comprising the EGTA process. We describe key EGTA concepts and techniques, and the questions at the frontier of EGTA research. Recent advances in machine learning have accelerated progress in EGTA, and promise to significantly expand our capacities for reasoning about complex game situations.
description: 60 pages, 16 figures
title: The Relationship Between Response Variability and Interview Contrast Effects
Creators: name: Cesare, Salvatore John
Publisher: name: Old Dominion University
publisherIdentifier: https://ror.org/04zjtrb98
publisherIdentifierScheme: ROR
Year: 1985

description: The low reliability and validity of the interview has lead to research aimed at improving its effectiveness. One such strategy is the microanalytic approach developed by Mayfield (1964). This approach centers on the decision—making processes errors made by the interviewer. One type of error is the contrast effect. A contrast effect is that situation where the rating given to an applicant is contingent upon the quality of preceeding applicants. This study used a 3 X 3 (Induced Set X Target Applicant) factorial design to assess how different amounts of response variability by an average applicant can influence contrast effects. Subjects were asked to rate a series of interview transcripts. The last transcript (target applicant) was always of average quality. An Induced Set main effect was found. Average applicants received higher ratings when they followed low quality applicants, and lower ratings when they followed high quality applicants. In addition, there was a significant Induced Set by Target Applicant interaction, though it was not in the hypothesized direction. The main implication of the results is that the probability that. an interviewee will be selected is in part determined by those applicants who precede him/her in the interviewing process. Suggestions for future research are discussed.
Generic spherically symmetric thin-shell wormholes with equilibrium throat at the innermost photonsphere are unstable
Creators: name: Mazharimousavi, S. Habib
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this research, we prove analytically that a generic spherically symmetric thin-shell wormhole (TSW) with its throat located at the innermost photonsphere of the bulk asymptotically flat black hole and supported by a generic surface barotropic perfect fluid is unstable against a radial linear perturbation. This is the generalization of the instability of the Schwarzschild TSW (STSW) with the throat's radius located at $a_{0}=3M$ that was revealed by Poisson and Visser in their seminal work \cite{Poisson1995} where they studied the mechanical stability of STSW. Our proof provides a link between the instability of the null circular geodesics on the innermost photonsphere of a generic static spherically symmetric asymptotically black hole and the TSW constructed in the same bulk with $a_{0}=r_{c}$ where $% a_{0} $ and $r_{c}$ are the radius of the TSW and the innermost photonsphere, respectively. For asymptotically flat spherically symmetric black holes possessing more than one photonspheres, the number of the photonspheres is odd and at least one photonsphere is stable which implies the corresponding TSW with its throat identical with the stable photonsphere is also stable.
description: Final version, 7 pages, no figures accepted for publication in EPJC
Protium subserratum Engl.
Creators: name: Molino, Jean-François
name: Sabatier, Daniel
name: Grenand, Pierre
name: Engel, Julien
name: Frame, Dawn
name: Delprete, Piero G.
name: Fleury, Marie
name: Odonne, Guillaume
name: Davy, Damien
name: Lucas, Eve J.
name: Martin, Claire A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Sapindales
Burseraceae
Protium
Protium subserratum

description: [213] Protium subserratum (Engl.) Engl.
 Monogr. Phan. [A.DC. & C.DC.] 4: 89 [Mar. 1883] (Engler 1883). — Icicopsis subserrata Engl., Fl. Bras. [Martius] 12 (2): 259 [1 Sep. 1874] (Engler 1874). — Tingulonga subserrata (Engl.) Kuntze, Revis. Gen. Pl. 1: 108 [5 Nov. 1891] (Kuntze 1891).
VERNACULAR NAMES. — Pa: sirasira, sirasra.
 HERBARIUM DATA (FG). — 37 collections at CAY. Sel. exs.: D. Sabatier & M.-F. Prévost 2927.
INVENTORY DATA (FG). — 167 trees in 82 plots; Fmax = 1 %; dbhinv = 50.5 cm.
description: Published as part of Molino, Jean-François, Sabatier, Daniel, Grenand, Pierre, Engel, Julien, Frame, Dawn, Delprete, Piero G., Fleury, Marie, Odonne, Guillaume, Davy, Damien, Lucas, Eve J. & Martin, Claire A., 2022, An annotated checklist of the tree species of French Guiana, including vernacular nomenclature, pp. 345-903 in Adansonia (3) (3) 44 (26) on page 405, DOI: 10.5252/adansonia2022v44a26, http://zenodo.org/record/7458777
On the Simulation of Polynomial NARMAX Models
Creators: name: Khandelwal, Dhruv
name: Schoukens, Maarten
name: Tóth, Roland
Publisher: name: arXiv
Year: 2018
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, we show that the common approach for simulation non-linear stochastic models, commonly used in system identification, via setting the noise contributions to zero results in a biased response. We also demonstrate that to achieve unbiased simulation of finite order NARMAX models, in general, we require infinite order simulation models. The main contributions of the paper are two-fold. Firstly, an alternate representation of polynomial NARMAX models, based on Hermite polynomials, is proposed. The proposed representation provides a convenient way to translate a polynomial NARMAX model to a corresponding simulation model by simply setting certain terms to zero. This translation is exact when the simulation model can be written as an NFIR model. Secondly, a parameterized approximation method is proposed to curtail infinite order simulation models to a finite order. The proposed approximation can be viewed as a trade-off between the conventional approach of setting noise contributions to zero and the approach of incorporating the bias introduced by higher-order moments of the noise distribution. Simulation studies are provided to illustrate the utility of the proposed representation and approximation method.
description: Accepted in IEEE CDC 2018
Monte Carlo algorithms based on the number of potential moves
Creators: name: Wang, Jian-Sheng
name: Lee, Lik Wee
Publisher: name: arXiv
Year: 1999
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We discuss Monte Carlo dynamics based on _E, the (microcanonical) average number of potential moves which increase the energy by Delta E in a single spin flip. The microcanonical average can be sampled using Monte Carlo dynamics of a single spin flip with a transition rate min(1, _E' / _E) from energy E to E'. A cumulative average (over Monte Carlo steps) can be used as a first approximation to the exact microcanonical average in the flip rate. The associated histogram is a constant independent of the energy. The canonical distribution of energy can be obtained from the transition matrix Monte Carlo dynamics. This second dynamics has fast relaxation time - at the critical temperature the relaxation time is proportional to specific heat. The dynamics are useful in connection with reweighting methods for computing thermodynamic quantities.
description: 8 pages, 4 figures, invited talk on CCP99 conference, 20-27 May 99, Atlanta, GA
Entanglement Entropy and Phase Portrait of f(R)-AdS Black Holes in the Grand Canonical Ensemble
Creators: name: Belhaj, A.
name: Moumni, H. El
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work, we investigate the thermodynamical behavior of charged AdS black holes from $f(R)$ gravity corrections with a constant Ricci scalar curvature in the grand-canonical ensemble. Using the holographic entanglement entropy, we show that the physical observables behave as in the case of the thermal entropy. By performing numerical computations associated with the thermodynamical quantities versus the entanglement entropy, we confirm that the same phase portrait persists in the holographic framework. In the grand-canonical ensemble, the present result supports the former finding which reveals that the charged $f(R)$ AdS black holes behave much like RN-AdS black holes.
description: 15 pages, 5figures, accepted in NPB
Simple model for the linear temperature dependence of the electrical resistivity of layered cuprates
Creators: name: Mishonov, Todor M.
name: Mishonov, Mihail T.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The thermal fluctuations of the electric field between the CuO_2 planes of layered cuprates are considered as an origin of the electrical resistivity. The model evaluation employs a set of separate plane capacitors each having area equal to the squared in-plane lattice constant a_0^2. It is shown that the scattering of charge carriers by the fluctuation of electric charge in the conducting CuO_2 planes gives rise to the in-plane electrical resistivity rho_ab. Such a mechanism can be viewed as an analog of the Rayleigh's blue-sky law---the charge carriers are scattered by thermal fluctuations of electron density.
description: 10 pages, 1 figure, to appear in Physica A
Protium surinamense Byng & Christenh.
Creators: name: Molino, Jean-François
name: Sabatier, Daniel
name: Grenand, Pierre
name: Engel, Julien
name: Frame, Dawn
name: Delprete, Piero G.
name: Fleury, Marie
name: Odonne, Guillaume
name: Davy, Damien
name: Lucas, Eve J.
name: Martin, Claire A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Sapindales
Burseraceae
Protium
Protium surinamense

description: [214] Protium surinamense Byng & Christenh.
 Global Fl. 4: 134 [9 Feb. 2018] (Byng & Christenhusz 2018). — Hedwigia hostmannii Engl., Monogr. Phan. [A.DC. & C.DC.] 4: 97 [Mar. 1883] (Engler 1883). — Tetragastris hostmannii (Engl.) Kuntze, Revis. Gen. Pl. 1: 106 [5 Nov. 1891] (Kuntze 1891).
 NOTES. — Known only from the Guiana Shield. One of five species whose relative density in tree communities likely indicative of preColumbian archeological sites in French Guiana (Molino et al. 2021).
VERNACULAR NAMES. — Pa: ahuwahu, auwau • Ka: pɨlɨka, wɨpɨtano pɨlɨka • Wp: yaya’ɨ, yaya’ɨsĩ• Cr: bois-yaya, yaya.
 HERBARIUM DATA (FG). — 25 collections at CAY. Sel. exs.: D. Sabatier & M.-F. Prévost 1354.
INVENTORY DATA (FG). — 67 trees in 38 plots; Fmax <1 %; dbhinv = 59 cm.
description: Published as part of Molino, Jean-François, Sabatier, Daniel, Grenand, Pierre, Engel, Julien, Frame, Dawn, Delprete, Piero G., Fleury, Marie, Odonne, Guillaume, Davy, Damien, Lucas, Eve J. & Martin, Claire A., 2022, An annotated checklist of the tree species of French Guiana, including vernacular nomenclature, pp. 345-903 in Adansonia (3) (3) 44 (26) on page 405, DOI: 10.5252/adansonia2022v44a26, http://zenodo.org/record/7458777
An Area Efficient 2D Fourier Transform Architecture for FPGA Implementation
Creators: name: Mukherjee, Atin
name: Choudhury, Debesh
Publisher: name: arXiv
Year: 2018
Subjects: subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: Two-dimensional Fourier transform plays a significant role in a variety of image processing problems, such as medical image processing, digital holography, correlation pattern recognition, hybrid digital optical processing, optical computing etc. 2D spatial Fourier transformation involves large number of image samples and hence it requires huge hardware resources of field programmable gate arrays (FPGA). In this paper, we present an area efficient architecture of 2D FFT processor that reuses the butterfly units multiple times. This is achieved by using a control unit that sends back the previous computed data of N/2 butterfly units to itself for {log_2(N) - 1} times. A RAM controller is used to synchronize the flow of data samples between the functional blocks.The 2D FFT processor is simulated by VHDL and the results are verified on a Virtex-6 FPGA. The proposed method outperforms the conventional NxN point 2D FFT in terms of area which is reduced by a factor of log_N(2) with negligible increase in computation time.
description: 7 pages, 8 figures, 6 tables
title: Development of a canopy stress method for large eddy simulation over complex terrain
Creators: name: Bhuiyan, Md Abdus Samad
Publisher: name: Memorial University of Newofundland
Year: 2020

description: High-fidelity Large-Eddy Simulation (LES) of fluid flow over complex terrain has long been a challenging computational problem. Complex terrain leads to increased velocity gradients, turbulence production, and complex turbulent wakes. Body-fitted grids need a high resolution to deal with additional effects of highly skewed cells that follow a terrain of steep slope. Immersed boundary methods need special techniques like wall models to numerically resolve the associated drag force. In flow over complex terrain, the characteristic scale decreases locally which makes it a challenging endeavour for LES to mimic the turbulent energy cascade, particularly when steep terrain produce vortices and streaky structures that sustain turbulence away from the surface. This thesis presents the canopy stress method in which the terrain is immersed into the fluid, cutting the cells of a Cartesian grid, where the effects of terrain are treated by the form drag and the skin friction drag. Heat transfer analysis of flow in pipes and porous media is considered to study the sensitivity of canopy drag coefficients. A scale-adaptive methodology is proposed to model the subgrid-scale terrain effects. The analysis of wind tunnel measurements over mountains and forests shows that the scale-adaptive model dynamically adjusts the dissipation rate by the scale of energetic eddies near complex terrain. In regions without terrain effects, where subgrid turbulence is locally isotropic, the model also provides accurate dissipation rate. These results suggest that combining the rotation tensor and the vortex stretching vector with the strain tensor through the second-invariant of the square of the velocity gradient tensor is a novel approach to improve the fidelity of LES over complex terrain in which the dissipation becomes scale-aware; i.e. the rate of turbulence dissipation is adjusted with the changes in the characteristic scales. The numerical analysis of four distinct flow regimes (e.g., Chapters 3-6) illustrates the accuracy, simplicity, and cost-effectiveness of the proposed LES methodology.
Additional file 9: of Structure and function of class III pistil-specific extensin-like protein in interspecific reproductive barriers
Creators: name: Alves, Camila
name: Noyszewski, Andrzej
name: Smith, Alan
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Gene blocks used to generate the TTS NTD and the TTS CTD. Gene block 1 contains start codon ATG (green shading), NcoI restriction enzyme site (black rectangle) and part of the TTS-S NTD; Gene block 2 contains part of the TTS-S NTD, the TTS-S CTD, the stop codon TAA (gray shading) and the NcoI restriction enzyme site (black rectangle). The gene blocks have overlapping regions designed for Gibson assembly (bold). The TTS-S sequence used for gene constructs is NCBI accession Z16403.1. (DOCX 14 kb)
Resonant Raman scattering of quantum wire in strong magnetic field
Creators: name: Lee, H. C.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The resonant Raman scattering of a quantum wire in a strong magnetic field is studied, focused on the effect of long range Coulomb interaction and the spin-charge separation. The energy-momentum dispersions of charge and spin excitation obtained from Raman cross-section show the characteristc cross-over behaviour induced by inter-edge Coulomb interaction. The "SPE" peak near resonance in polarized spectra becomes broad due to the momentum dependence of charge velocity. The broad peak in the depolarized spectra is shown to originate from the disparity between charge and spin excitation velocity.
description: RevTex file, 6 pages, no figure: To appear in Int. Jour. Mod. Phys. B
Optimal control in large open quantum systems: the case of transmon readout and reset
Creators: name: Gautier, Ronan
name: Genois, Élie
name: Blais, Alexandre
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a framework that combines the adjoint-state method together with reverse-time backpropagation to solve prohibitively large open-system quantum control problems. Our approach enables the optimization of arbitrary cost functions with fully general controls applied on large open quantum systems described by a Lindblad master equation. It is scalable, computationally efficient, and has a low-memory footprint. We apply this framework to optimize two inherently dissipative operations in superconducting qubits which lag behind in terms of fidelity and duration compared to other unitary operations: the dispersive readout and all-microwave reset of a transmon qubit. Our results show that while standard pulses for dispersive readout are nearly optimal, adding a transmon drive during the protocol can yield 2x improvements in fidelity and duration. We further demonstrate a 2x improvement in reset fidelity and duration through pulse shaping, indicating significant potential for enhancement in reset protocols. Our approach can readily be applied to optimize quantum controls in a vast range of applications such as reservoir engineering, autonomous quantum error correction, and leakage-reduction units.
description: 5 pages, 3 figures
A procedure for forecasting MoPAC's freight car utilization and car hire expense
Creators: name: Godfrey, Michael B.
name: Warnebold, Glenn J.
name: Godfrey, Michael B.
name: Warnebold, Glenn J.
Publisher: name: Unknown
Year: 1981
Subjects: Research and Development/Tech Change/Emerging Technologies

description: Proceedings of the Transportation Research Forum - 22nd - 1981
Spontaneous emission of a sodium Rydberg atom close to an optical nanofibre
Creators: name: Stourm, E
name: Zhang, Y
name: Lepers, M
name: Guérout, R
name: Robert, J
name: Chormaic, S Nic
name: Mølmer, K.
name: Brion, E.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report on numerical calculations of the spontaneous emission rate of a Rydberg-excited sodium atom in the vicinity of an optical nanofibre. In particular, we study how this rate varies with the distance of the atom to the fibre, the fibre's radius, the symmetry s or p of the Rydberg state as well as its principal quantum number. We find that a fraction of the spontaneously emitted light can be captured and guided along the fibre. This suggests that such a setup could be used for networking atomic ensembles, manipulated in a collective way due to the Rydberg blockade phenomenon.
Nonextensive triplets in stock market indices
Creators: name: Stosic, Dusan
name: Stosic, Darko
name: Stosic, Tatijana
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Finance (q-fin.ST)
subject: FOS: Economics and business

description: Stock market indices are one of the most investigated complex systems in econophysics. Here we extend the existing literature on stock markets in connection with nonextensive statistical mechanics. We explore the nonextensivity of price volatilities for 34 major stock market indices between 2010 and 2019. We discover that stock markets follow nonextensive statistics regarding equilibrium, relaxation and sensitivity. We find nonextensive behavior in stock markets for developed countries, but not for developing countries. Distances between nonextensive triplets suggest that some stock markets might share similar nonextensive dynamics, while others are widely different. The current findings strongly indicate that the stock market represents a system whose physics is properly described by nonextensive statistical mechanics. Our results shed light on the complex nature of stock market indices, and establish another formal link with the nonextensive theory.
How the geometry makes the criticality in two - component spreading phenomena?
Creators: name: Lebovka, N. I.
name: Vygornitskii, N. V.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study numerically a two-component A-B spreading model (SMK model) for concave and convex radial growth of 2d-geometries. The seed is chosen to be an occupied circle line, and growth spreads inside the circle (concave geometry) or outside the circle (convex geometry). On the basis of generalised diffusion-annihilation equation for domain evolution, we derive the mean field relations describing quite well the results of numerical investigations. We conclude that the intrinsic universality of the SMK does not depend on the geometry and the dependence of criticality versus the curvature observed in numerical experiments is only an apparent effect. We discuss the dependence of the apparent critical exponent $χ_{a}$ upon the spreading geometry and initial conditions.
description: Uses iopart.cls, 11 pages with 8 postscript figures embedded
Applications of a freight network model to the analysis of competitive situations
Creators: name: Bushnell, Robert C.
name: Pearsall, Edward S.
name: Bushnell, Robert C.
name: Pearsall, Edward S.
Publisher: name: Unknown
Year: 1981
Subjects: Research and Development/Tech Change/Emerging Technologies

description: Proceedings of the Transportation Research Forum - 22nd - 1981
Density distributions and depth in flocks
Creators: name: Lewis, Jason M.
name: Turner, Matthew S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: Recent experimental evidence suggests that interactions in flocks of birds do not involve a characteristic length scale. Bird flocks have also been revealed to have an inhomogeneous density distribution, with the density of birds near the border greater than near the centre. We introduce a strictly metric-free model for collective behaviour that incorporates a distributed motional bias, providing control of the density distribution. A simple version of this model is then able to provide a good fit to published data for the density variation across flocks of Starlings. We find that it is necessary for individuals on the edge of the flock to have an inward motional bias but that birds in the interior of the flock instead must have an outward bias. We discuss the ability of individuals to determine their depth within a flock and show how this might be achieved by relatively simple analysis of their visual environment.
description: Accepted version; Main text: 9 pages, 6 figures. Supplementary materials: 6 pages, 5 figures
Protium tenuifolium Engl.
Creators: name: Molino, Jean-François
name: Sabatier, Daniel
name: Grenand, Pierre
name: Engel, Julien
name: Frame, Dawn
name: Delprete, Piero G.
name: Fleury, Marie
name: Odonne, Guillaume
name: Davy, Damien
name: Lucas, Eve J.
name: Martin, Claire A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Sapindales
Burseraceae
Protium
Protium tenuifolium

description: [215] Protium tenuifolium (Engl.) Engl.
(Fig. 13A)
 Monogr. Phan. [A.DC. & C.DC.] 4: 76 [Mar. 1883] (Engler 1883). — Icicopsis tenuifolia Engl., Fl. Bras. [Martius] 12 (2): 255 [1 Sep. 1874] (Engler 1874). — Tingulonga tenuifolia (Engl.) Kuntze, Revis. Gen. Pl. 1: 108 [5 Nov. 1891] (Kuntze 1891).
 Protium neglectum Swart, Recueil Trav. Bot. Néerl. 39: 203 (Swart 1942).
 NOTE. — Hyperdominant in Amazonia (ter Steege et al. 2020).
VERNACULAR NAMES. — Pa: ahuwahu, auwau, auwau-seinõ • Wp: waluwaɨ, waluwaɨpilã • Wn: awa.
 HERBARIUM DATA (FG). — 30 collections at CAY. Sel. exs.: D. Sabatier & M.-F. Prévost 4072.
INVENTORY DATA (FG). — 195 trees in 95 plots; Fmax = 1.9 %; dbhinv = 72.5 cm.
description: Published as part of Molino, Jean-François, Sabatier, Daniel, Grenand, Pierre, Engel, Julien, Frame, Dawn, Delprete, Piero G., Fleury, Marie, Odonne, Guillaume, Davy, Damien, Lucas, Eve J. & Martin, Claire A., 2022, An annotated checklist of the tree species of French Guiana, including vernacular nomenclature, pp. 345-903 in Adansonia (3) (3) 44 (26) on page 405, DOI: 10.5252/adansonia2022v44a26, http://zenodo.org/record/7458777
Quantum valley Hall states in low-buckled counterparts of graphene bilayer
Creators: name: Shen, Yu-Hao
name: Zheng, Jun-Ding
name: Tong, Wen-Yi
name: Bao, Zhi-Qiang
name: Wan, Xian-Gang
name: Duan, Chun-Gang
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: With low-buckled structure for each layer in graphene bilayer system, there breaks inversion symmetry (P-symmetry) for one stacking when both A and B sublattices in top layer are aligned with those in bottom layer. In consideration of spin-orbit coupling (SOC), there opens nontrivial topological gap in each monolayer system to achieve quantum spin Hall effect (QSHE). As long as time-reversal symmetry (T-symmetry) is preserved the gapless edge states is robust in each individual layer even for the bilayer absent of PT symmetry. Based on this platform and through tight-binding (TB) model calculations we find it becomes a typical system that can exhibit quantum valley Hall effect (QVHE) when introduced a layer-resolved Rashba SOC that leads to band inversion at each K valley in the hexagonal Brillion zone (BZ). The topological transition comes from that the valley Chern number Cv = CK - CK' switches from 0 to 2, which characterizes the nontrivial QVHE phase transited from two coupled Z2 topological insulators. We also point that the layer-resolved Rashba SOC can be introduced equivalently by twisting two van der Waals touched layers. And through TB calculations, it is shown that the K bands inverts in its corresponding mini BZ when the two layers twisted by a small angle. Our findings advance potential applications for the devices design in topological valleytronics and twistronics.
Growth of Patterned Surfaces
Creators: name: Kallabis, Harald
name: Wolf, Dietrich E.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: During epitaxial crystal growth a pattern that has initially been imprinted on a surface approximately reproduces itself after the deposition of an integer number of monolayers. Computer simulations of the one-dimensional case show that the quality of reproduction decays exponentially with a characteristic time which is linear in the activation energy of surface diffusion. We argue that this life time of a pattern is optimized, if the characteristic feature size of the pattern is larger than $(D/F)^{1/(d+2)}$, where $D$ is the surface diffusion constant, $F$ the deposition rate and $d$ the surface dimension.
description: 4 pages, 4 figures, uses psfig; to appear in Phys. Rev. Lett
BOSHLANG'ICH SINFLARDAGI O'QUV FANLARI MAZMUNIDA O'QUVCHILARINING IJTIMOIY FAOL FUQAROLIK KOMPETENSIYALARINI SHAKLLANTIRISH MEXANIZMLARI.
Creators: name: Rustambekova, Nigora
Publisher: name: Zenodo
Year: 2024

description: Ushbu maqolada  Boshlang‘ich sinf o‘quvchilarida ijtimoiy faol fuqarolik kompetensiyalarni shakllantirishda ta’lim mazmuni va maqsadi haqida ma’lumotlar berilgan.  Shuningdek maqolada tadbirlar, suhbatlar, intervyular, uchrashuvlar, ko‘rik-tanlovlar, bahs-munozaralar, viktorinalar, davra suhbatlari, muzyelarga ekskursiyalar uyushtirish, vatanparvarlik va baynalminallik mavzularida yaratilgan asarlar mazmuni bilan tanishish boshlang‘ich sinf o‘quvchilarida ijtimoiy faol fuqarolik kompetensiyalarini shakllantirish uchun muhim manba va vosita hisoblanishi batafsil yoritilgan.
Optical conductivity in doped manganites with planar x$^2$-y$^2$ orbital order
Creators: name: Mack, Frank
name: Horsch, Peter
Publisher: name: arXiv
Year: 1999
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate a planar model for the ferromagnetic (FM) phase of manganites, which develops orbital order of $e_g$ electrons with x$^2$-y$^2$-symmetry at low temperature. The dynamic structure factor of orbital excitations and the optical conductivity $σ(ω)$ are studied with help of a finite-temperature diagonalization method. Our calculations provide a theoretical prediction for $σ(ω)$ for the 2D FM state and are of possible relevance for the recently found A-type phase of manganites at high doping which consists of FM layers coupled antiferromagnetically. In the x$^2$-y$^2$ ordered regime $σ(ω)$ shows both a Drude peak and a gapped incoherent absorption due to a gap in the orbital excitations.
description: 5 pages, 5 figures, to appear in Phys. Rev. Lett
Finding the Needle in a Haystack: Detrending Photometric Timeseries Data of Strictly Periodic Astrophysical Objects
Creators: name: Prsa, Andrej
name: Zhang, Moses
name: Wells, Mark
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Light curves of astrophysical objects frequently contain strictly periodic signals. In those cases we can use that property to aid the detrending algorithm to fully disentangle an unknown periodic signal and an unknown baseline signal with no power at that period. The periodic signal is modeled as a discrete probability distribution function (pdf), while the baseline signal is modeled as a residual timeseries. Those two components are disentangled by minimizing the length of the residual timeseries w.r.t. the per-bin pdf fluxes. We demonstrate the use of the algorithm on a synthetic case, on the eclipsing binary KIC 3953981 and on the eccentric ellipsoidal variable KIC 3547874. We further discuss the parameters and the limitations of the algorithm and speculate on the two most common use cases: detrending the periodic signal of interest and measuring the dependence of instrumental response on controlled instrumental variables. A more sophisticated version of the algorithm is released as open source on github and available via pip.
description: 9 pages, 2 figures; code available from https://github.com/aprsa/dips and via pip3
Additional file 8: of Structure and function of class III pistil-specific extensin-like protein in interspecific reproductive barriers
Creators: name: Alves, Camila
name: Noyszewski, Andrzej
name: Smith, Alan
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Amplicon and gene block used to generate the NpCt gene. Amplicon 1 NpCt contains: NcoI restriction enzyme site (black rectangle), a start codon (green shading) and the PELPIII NTD amplified from PIIICtrl (accession Z14019.1); Gene block 1 NpCt contains: the TTS CTD, the stop codon TAA (gray shading) and a NcoI restriction enzyme site (black rectangle). The amplicons have overlapping regions designed for Gibson assembly (bold). Primers used to amplify PELPIII NTD are underlined and italicized. (DOCX 15 kb)
Controlling grain boundaries by magnetic fields
Creators: name: Backofen, R.
name: Elder, K. R.
name: Voigt, A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The ability to use external magnetic fields to influence the microstructure in polycrystalline materials has potential applications in microstructural engineering. To explore this potential and to understand the complex interactions between electromagnetic fields and solid-state matter transport we consider a phase-field-crystal (PFC) model. Together with efficient and scalable numerical algorithms this allows the examination of the role that external magnetic fields play on the evolution of defect structures and grain boundaries, on diffusive time scales. Examples for planar and circular grain boundaries explain the essential atomistic processes and large scale simulations in 2D are used to obtain statistical data on grain growth under the influence of external fields.
description: 5 pages
Protium trifoliolatum Engl.
Creators: name: Molino, Jean-François
name: Sabatier, Daniel
name: Grenand, Pierre
name: Engel, Julien
name: Frame, Dawn
name: Delprete, Piero G.
name: Fleury, Marie
name: Odonne, Guillaume
name: Davy, Damien
name: Lucas, Eve J.
name: Martin, Claire A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Sapindales
Burseraceae
Protium
Protium trifoliolatum

description: [216] Protium trifoliolatum Engl.
(Fig. 12C)
 Fl. Bras. [Martius] 12 (2): 266 [1 Sep. 1874] (Engler 1874). — Tingulonga trifoliolata (Engl.) Kuntze, Revis. Gen. Pl. 1: 108 [5 Nov. 1891] (Kuntze 1891). — Tetragastris trifoliolata (Engl.) Cuatrec., Bol. Mus. Paraense Emílio Goeldi, N.S., Bot. 11: 9 (Cuatrecasas 1961).
 Protium martianum Engl., Fl. Bras. [Martius] 12 (2): 266 [1 Sep. 1874] (Engler 1874). — Tingulonga martiana (Engl.) Kuntze, Revis. Gen. Pl. 1: 108 [5 Nov. 1891] (Kuntze 1891).
 Protium titubans J.F.Macbr., Candollea 5: 379 (Macbride 1934).
 Protium pauciflorum Swart, Recueil Trav.Bot.Néerl. 39: 196 (Swart 1942).
 Protium joannis Cuatrec., Bol. Mus. Paraense Emílio Goeldi, N.S. , Bot. 11: 2 (Cuatrecasas 1961).
 NOTE. — Hyperdominant in Amazonia (ter Steege et al. 2020).
VERNACULAR NAMES. — Pa: marinaiwa • Ka: pakila šipyolɨ • Te: waluwa’ɨ • Wp: ɨɨ, sipɨ lã, sipɨ laãnga, sipɨ sili, sipɨ towi’i • Wn: aimalaje • Nt: sali.
 HERBARIUM DATA (FG). — 80 collections at CAY. Sel. exs.: D. Sabatier & M.-F. Prévost 1836.
INVENTORY DATA (FG). — 133 trees in 37 plots; Fmax = 6.6 %; dbhinv = 32.1 cm.
description: Published as part of Molino, Jean-François, Sabatier, Daniel, Grenand, Pierre, Engel, Julien, Frame, Dawn, Delprete, Piero G., Fleury, Marie, Odonne, Guillaume, Davy, Damien, Lucas, Eve J. & Martin, Claire A., 2022, An annotated checklist of the tree species of French Guiana, including vernacular nomenclature, pp. 345-903 in Adansonia (3) (3) 44 (26) on page 405, DOI: 10.5252/adansonia2022v44a26, http://zenodo.org/record/7458777
Investigating dynamical properties of evolved Galactic open clusters
Creators: name: Angelo, M. S.
name: Santos, J. F. C.
name: Corradi, W. J. B.
name: Maia, F. F. S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The stellar content of Galactic open clusters is gradually depleted during their evolution as a result of internal relaxation and external interactions. The final residues of the evolution of open clusters are called open cluster remnants, barely distinguishable from the field. We aimed to characterise and compare the dynamical states of a set of 16 such objects. The sample also includes 7 objects that are catalogued as dynamically evolved open clusters. We used photometric data from the 2MASS, astrometric data from the GAIA DR2 and a decontamination algorithm that was applied to the three-dimensional astrometric space of proper motions and parallaxes for stars in the objects' areas. The luminosity and mass functions and total masses for most open cluster remnants are derived here for the first time. Our analysis used predictions of N-body simulations to estimate the initial number of stars of the remnants from their dissolution timescales. The investigated open cluster remnants present masses and velocity dispersions within well-defined ranges: M between ~10-40M_Sun and sigma_v between ~1-7km/s. Some objects in the remnant sample have a limiting radius R_lim
description: Accepted for publication in A&A
Voting Rights of Expatriates and the Australian Constitution
Creators: name: Gray, Anthony
Publisher: name: Monash University
Year: 2024
Subjects: classificationCode: 480702
subject: Constitutional law

description: The Commonwealth Electoral Act 1918 (Cth) limits voting rights of an Australian citizen living overseas. That right will expire after six years’ non-residency(possibly extended). This provision affects hundreds of thousands of Australian citizens. It is potentially at odds with the seriousness with which the High Court takes the universality of the adult franchise, reflected in decisions like Roach v Electoral Commissioner and Rowe v Electoral Commissioner. The Court insisted denial of adult suffrage be for a substantial reason, and be proportionate to a legitimate objective, to be constitutionally valid. This article argues denial of the vote to long-term expatriate Australian citizens may not pass these tests. It then considers an alternative, whether Parliament could pass a law stripping citizenship from long-term expatriates, thus severing their right to vote, which is typically linked with citizenship. It argues there is significant doubt whether a head of power supports such law. There are limits toParliament’s ability to define who is an ‘alien’ for the purposes of s 51(xix), and other heads of power are untested. Further, if the power were exercised by a Minister, it might infringe ch III of the Constitution, given the High Court’s decision in Alexander v Minister for Home Affairs and Benbrika v Minister for Home Affairs.
Trattinnickia boliviana Daly
Creators: name: Molino, Jean-François
name: Sabatier, Daniel
name: Grenand, Pierre
name: Engel, Julien
name: Frame, Dawn
name: Delprete, Piero G.
name: Fleury, Marie
name: Odonne, Guillaume
name: Davy, Damien
name: Lucas, Eve J.
name: Martin, Claire A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Sapindales
Burseraceae
Trattinnickia
Trattinnickia boliviana

description: [217] Trattinnickia boliviana (Swart) Daly
 Kew Bull. 54 (1): 130 (Daly 1999). — Trattinnickia lawrancei Standl. var. boliviana Swart, Acta Bot. Neerl. 1: 249 (Swart 1952 ).
 HERBARIUM DATA (FG). — A single collection, R.A.A. Oldeman 2106.
 SIZE. — Brazil, Acre. D.C. Daly 6912 (MO), 25 m × 35 cm.
description: Published as part of Molino, Jean-François, Sabatier, Daniel, Grenand, Pierre, Engel, Julien, Frame, Dawn, Delprete, Piero G., Fleury, Marie, Odonne, Guillaume, Davy, Damien, Lucas, Eve J. & Martin, Claire A., 2022, An annotated checklist of the tree species of French Guiana, including vernacular nomenclature, pp. 345-903 in Adansonia (3) (3) 44 (26) on page 405, DOI: 10.5252/adansonia2022v44a26, http://zenodo.org/record/7458777
Stable Gaussian Process based Tracking Control of Lagrangian Systems
Creators: name: Beckers, Thomas
name: Umlauft, Jonas
name: Kulić, Dana
name: Hirche, Sandra
Publisher: name: arXiv
Year: 2018
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: High performance tracking control can only be achieved if a good model of the dynamics is available. However, such a model is often difficult to obtain from first order physics only. In this paper, we develop a data-driven control law that ensures closed loop stability of Lagrangian systems. For this purpose, we use Gaussian Process regression for the feed-forward compensation of the unknown dynamics of the system. The gains of the feedback part are adapted based on the uncertainty of the learned model. Thus, the feedback gains are kept low as long as the learned model describes the true system sufficiently precisely. We show how to select a suitable gain adaption law that incorporates the uncertainty of the model to guarantee a globally bounded tracking error. A simulation with a robot manipulator demonstrates the efficacy of the proposed control law.
description: Please cite the conference paper. arXiv admin note: text overlap with arXiv:1806.07190
Sails for universal quadratic forms
Creators: name: Kala, Vítězslav
name: Man, Siu Hang
Publisher: name: arXiv
Year: 2024
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11E12, 11E20, 11H06, 11J70, 11R04, 11R16, 11R80

description: We establish a new connection between sails, a key notion in the geometric theory of generalised continued fractions, and arithmetic of totally real number fields, specifically, universal quadratic forms and additively indecomposable integers. Our main application is to biquadratic fields, for which we show that if their signature rank is at least 3, then ranks of universal forms and numbers of indecomposables grow as a power of the discriminant. We also construct a family in which these numbers grow only logarithmically.
description: Published version, 22 pages
A Generative Model of Textures Using Hierarchical Probabilistic Principal Component Analysis
Creators: name: Suzuki, Aiga
name: Shouno, Hayaru
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Modeling of textures in natural images is an important task to make a microscopic model of natural images. Portilla and Simoncelli proposed a generative texture model, which is based on the mechanism of visual systems in brains, with a set of texture features and a feature matching. On the other hand, the texture features, used in Portillas' model, have redundancy between its components came from typical natural textures. In this paper, we propose a contracted texture model which provides a dimension reduction for the Portillas' feature. This model is based on a hierarchical principal components analysis using known group structure of the feature. In the experiment, we reveal effective dimensions to describe texture is fewer than the original description. Moreover, we also demonstrate how well the textures can be synthesized from the contracted texture representations.
description: 6 pages, 9 figures; A proceeding of PDPTA'17 accepted as an oral presentation