cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Accelerating and Compressing Deep Neural Networks for Massive MIMO CSI Feedback
Creators: name: Erak, Omar
name: Abou-Zeid, Hatem
Publisher: name: arXiv
Year: 2023
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Information Theory (cs.IT)
subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The recent advances in machine learning and deep neural networks have made them attractive candidates for wireless communications functions such as channel estimation, decoding, and downlink channel state information (CSI) compression. However, most of these neural networks are large and inefficient making it a barrier for deployment in practical wireless systems that require low-latency and low memory footprints for individual network functions. To mitigate these limitations, we propose accelerated and compressed efficient neural networks for massive MIMO CSI feedback. Specifically, we have thoroughly investigated the adoption of network pruning, post-training dynamic range quantization, and weight clustering to optimize CSI feedback compression for massive MIMO systems. Furthermore, we have deployed the proposed model compression techniques on commodity hardware and demonstrated that in order to achieve inference gains, specialized libraries that accelerate computations for sparse neural networks are required. Our findings indicate that there is remarkable value in applying these model compression techniques and the proposed joint pruning and quantization approach reduced model size by 86.5% and inference time by 76.2% with minimal impact to model accuracy. These compression methods are crucial to pave the way for practical adoption and deployments of deep learning-based techniques in commercial wireless systems.
description: IEEE ICC 2023 Conference
Dual field structure-preserving discretization of port-Hamiltonian systems using finite element exterior calculus
Creators: name: Brugnoli, Andrea
name: Rashad, Ramy
name: Stramigioli, Stefano
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper we propose a novel approach to discretize linear port-Hamiltonian systems while preserving the underlying structure. We present a finite element exterior calculus formulation that is able to mimetically represent conservation laws and cope with mixed open boundary conditions using a single computational mesh. The possibility of including open boundary conditions allows for modular composition of complex multi-physical systems whereas the exterior calculus formulation provides a coordinate-free treatment. Our approach relies on a dual-field representation of the physical system that is redundant at the continuous level but eliminates the need of mimicking the Hodge star operator at the discrete level. By considering the Stokes-Dirac structure representing the system together with its adjoint, which embeds the metric information directly in the codifferential, the need for an explicit discrete Hodge star is avoided altogether. By imposing the boundary conditions in a strong manner, the power balance characterizing the Stokes-Dirac structure is then retrieved at the discrete level via symplectic Runge-Kutta integrators based on Gauss-Legendre collocation points. Numerical experiments validate the convergence of the method and the conservation properties in terms of energy balance both for the wave and Maxwell equations in a three dimensional domain. For the latter example, the magnetic and electric fields preserve their divergence free nature at the discrete level.
description: 44 pages, 15 figures
Photophoresis boosts giant planet formation
Creators: name: Teiser, Jens
name: Dodson-Robinson, Sarah E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In the core accretion model of giant planet formation, a solid protoplanetary core begins to accrete gas directly from the nebula when its mass reaches about 5 earth masses. The protoplanet has at most a few million years to reach runaway gas accretion, as young stars lose their gas disks after 10 million years at the latest. Yet gas accretion also brings small dust grains entrained in the gas into the planetary atmosphere. Dust accretion creates an optically thick protoplanetary atmosphere that cannot efficiently radiate away the kinetic energy deposited by incoming planetesimals. A dust-rich atmosphere severely slows down atmospheric cooling, contraction, and inflow of new gas, in contradiction to the observed timescales of planet formation. Here we show that photophoresis is a strong mechanism for pushing dust out of the planetary atmosphere due to the momentum exchange between gas and dust grains. The thermal radiation from the heated inner atmosphere and core is sufficient to levitate dust grains and to push them outward. Photophoresis can significantly accelerate the formation of giant planets.
description: accepted in Astronomy and Astrophysics, 2013
Additional file 3 of Conducting school-based health surveys with secondary schools in England: advice and recommendations from school staff, local authority professionals, and wider key stakeholders, a qualitative study
Creators: name: Hatch, Lorna M.
name: Widnall, Emily C.
name: Albers, Patricia N.
name: Hopkins, Georgina L.
name: Kidger, Judi
name: de Vocht, Frank
name: Kaner, Eileen
name: van Sluijs, Esther M. F.
name: Fairbrother, Hannah
name: Jago, Russell
name: Campbell, Rona M.
Publisher: name: figshare
Year: 2023
Subjects: subject: Sociology
subject: FOS: Sociology

description: Additional file 3: Supplementary file 3. The Framework Method – additional information on the analysis approach utilised.
Alltagskulturen in den Slums von Nairobi : eine geographiedidaktische Studie zum kritisch-reflexiven Umgang mit Raumbildern
Creators: name: Eberth, Andreas
Publisher: name: Bielefeld : transcript
Year: 2019
Subjects: subject: Kenia
subject: Slum
subject: Geographiedidaktik
subject: Raumbilder
subject: Raumkonstruktionen
subject: Sozialgeographie
subject: Nairobi
subject: Dewey Decimal Classification::900 | Geschichte und Geografie

description: Mittels der Methode »reflexive Fotografie« stellt Andreas Eberth Alltagskulturen von Jugendlichen dar, die in den Slums von Nairobi geboren wurden, dort aufgewachsen sind und noch immer dort leben. Darauf basierend entwickelt er ein Konzept für den Geographieunterricht, das durch die Schulung einer kritisch-reflexiven Bildkompetenz dazu beiträgt, die Perspektiven auf das Leben im kenianischen Slum zu differenzieren. Mit diesem exemplarischen Raumbeispiel werden Ansätze aufgezeigt, wie es gelingen kann, im Schulunterricht ein differenzierteres »Afrika«-Bild zu vermitteln und Vorurteile abzubauen.
Unconditionally secure digital signatures implemented in an 8-user quantum network
Creators: name: Pelet, Yoann
name: Puthoor, Ittoop Vergheese
name: Venkatachalam, Natarajan
name: Wengerowsky, Sören
name: Lončarić, Martin
name: Neumann, Sebastian Philipp
name: Liu, Bo
name: Samec, Željko
name: Stipčević, Mario
name: Ursin, Rupert
name: Andersson, Erika
name: Rarity, John G.
name: Aktas, Djeylan
name: Joshi, Siddarth Koduru
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Cryptography and Security (cs.CR)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The ability to know and verifiably demonstrate the origins of messages can often be as important as encrypting the message itself. Here we present an experimental demonstration of an unconditionally secure digital signature (USS) protocol implemented for the first time, to the best of our knowledge, on a fully connected quantum network without trusted nodes. Our USS protocol is secure against forging, repudiation and messages are transferrable. We show the feasibility of unconditionally secure signatures using only bi-partite entangled states distributed throughout the network and experimentally evaluate the performance of the protocol in real world scenarios with varying message lengths.
description: Preprint, 9 pages, 7 figures, 1 table
Rosa jundzillii Besser
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: R. Jundzillii Besser (J?. trachyphylla Rau) Cat. XLIV und 103. Nicht im Wallis.
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Robust and efficient CMB lensing power spectrum from polarization surveys
Creators: name: Legrand, Louis
name: Carron, Julien
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Deep surveys of the CMB polarization have more information on the lensing signal than the quadratic estimators (QE) can capture. We showed in a recent work that a CMB lensing power spectrum built from a single optimized CMB lensing mass map, working in close analogy to state-of-the-art QE techniques, can result in an essentially optimal spectrum estimator at reasonable numerical cost. We extend this analysis here to account for real-life non-idealities including masking and realistic instrumental noise maps. As in the QE case, it is necessary to include small corrections to account for the estimator response to these anisotropies, which we demonstrate can be estimated easily from simulations. The realization-dependent debiasing of the spectrum remains robust, allowing unbiased recovery of the band powers even in cases where the statistical model used for the lensing map reconstruction is grossly wrong. This allows now robust and at the same time optimal CMB lensing constraints from CMB data, on all scales relevant for the inference of the neutrino mass, or other parameters of our cosmological model.
description: 12 pages, 9 figures
García López, Jesús, El conocimiento de Dios em Descartes. Ed. EUNSA. 1 vol. de 147 ps. 145x215. Pamplona. 1976
Creators: name: Marques, José A.
Publisher: name: Theologica
Year: 1977

description: Theologica, v. 12 n. 1-4 (1977)
Weighted 1-dimensional Orlicz-Poincaré inequalities
Creators: name: Korobenko, Lyudmila
name: Milshstein, Olly
name: Yong, Lucas
Publisher: name: arXiv
Year: 2023
Subjects: subject: Functional Analysis (math.FA)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this paper we establish necessary and sufficient conditions for weighted Orlicz-Poincaré inequalities in dimension one. Our theorems generalize the main results of Chua and Wheeden, who established necessary and sufficient conditions for weighted $(q,p)$ Poincaré inequalities. We give an example of a weight satisfying sufficient conditions for a $(Φ, p)$ Orlicz-Poincaré inequality where the gauge norm with respect to $Φ$ is a bump on the Lebesgue $L^p$ norm. This weight, on the other hand, does not satisfy a $(q,p)$ Poincaré inequality for any $q > p$.
Falgueras, Ignacio, La «res cogitans» en Espinosa. Ed. EUNSA. 1 vol. de 307 ps. 145x215. Pamplona. 1976
Creators: name: Marques, José A.
Publisher: name: Theologica
Year: 1977

description: Theologica, v. 12 n. 1-4 (1977)
Ill-posedness for subcritical hyperdissipative Navier-Stokes equations in the largest critical spaces
Creators: name: Cheskidov, Alexey
name: Shvydkoy, Roman
Publisher: name: arXiv
Year: 2012
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 76D03, 35Q30

description: We study the incompressible Navier-Stokes equations with a fractional Laplacian and prove the existence of discontinuous Leray-Hopf solutions in the largest critical space with arbitrarily small initial data.
Solutions to Yang-Mills Equations on Four-Dimensional de Sitter Space
Creators: name: Ivanova, T.A.
name: Lechtenfeld, Olaf
name: Popov, Alexander D.
Publisher: name: College Park, MD : American Physical Society
Year: 2017
Subjects: subject: Differential equations
subject: Magnetism
subject: Double-well potential
subject: Electric magnetic
subject: Magnetic solutions
subject: Newtonian dynamics
subject: Ordinary matrix
subject: Spatially homogeneous
subject: SU(2) yang-mills theory
subject: Yang-Mills equation
subject: Ordinary differential equations
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We consider pure SU(2) Yang-Mills theory on four-dimensional de Sitter space dS4 and construct a smooth and spatially homogeneous magnetic solution to the Yang-Mills equations. Slicing dS4 as R×S3, via an SU(2)-equivariant ansatz, we reduce the Yang-Mills equations to ordinary matrix differential equations and further to Newtonian dynamics in a double-well potential. Its local maximum yields a Yang-Mills solution whose color-magnetic field at time τ∈R is given by ˜Ba=−12Ia/(R2cosh2τ), where Ia for a=1, 2, 3 are the SU(2) generators and R is the de Sitter radius. At any moment, this spatially homogeneous configuration has finite energy, but its action is also finite and of the value −12j(j+1)(2j+1)π3 in a spin-j representation. Similarly, the double-well bounce produces a family of homogeneous finite-action electric-magnetic solutions with the same energy. There is a continuum of other solutions whose energy and action extend down to zero. © 2017 American Physical Society.
Characterization of Multianode Photomultiplier Tubes for use in the CLAS12 RICH Detector
Creators: name: Degtiarenko, Pavel
name: Kim, Andrey
name: Kubarovsky, Valery
name: Raydo, Ben
name: Smith, Andrew
name: Benmokhtar, Fatiha
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present results of the detailed study of several hundred Hamamatsu H12700 Multianode Photomultiplier Tubes (MaPMTs), characterizing their response to the Cherenkov light photons in the second Ring Imaging Cherenkov detector, a part of the CLAS12 upgrade at Jefferson Lab. The total number of pixels studied was 25536. The single photoelectron spectra were measured for each pixel at different high voltages and light intensities of the laser test setup. Using the same dedicated front-end electronics as in the first RICH detector, the setup allowed us to characterize each pixel's properties such as gain, quantum efficiency, signal crosstalk between neighboring pixels, and determine the signal threshold values to optimize their efficiency to detect Cherenkov photons. A recently published state-of-the-art mathematical model, describing photon detector response functions measured in low light conditions, was extended to include the description of the crosstalk contributions to the spectra. The database of extracted parameters will be used for the final selection of the MaPMTs, their arrangement in the new RICH detector, and the optimization of the operational settings of the front-end electronics. The results show that the characteristics of the H12700 MaPMTs satisfy our requirements for the position-sensitive single photoelectron detectors.
Mixed oxygen ionic and electron conducting perovskite oxides : issues and possible solutions
Creators: name: Efimov, Konstantin
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2011
Subjects: subject: Mixed ionic and electron conductor
subject: oxygen transporting membrane
subject: perovskite
subject: Gemischt Ionen- und Elektronenleiter
subject: Sauerstofftransportierende Membran
subject: Perowskit
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Gómez Pérez, Rafael, Gramsci. El Comunismo latino. Ed. EUNSA (Colección Cultural de Bolsillo «Temas NT», n.° 31). 1 vol. de 216 ps. 110x180. Pamplona. 1976
Creators: name: Marques, José A.
Publisher: name: Theologica
Year: 1977

description: Theologica, v. 12 n. 1-4 (1977)
The Nature of gamma-ray Loud Narrow Line Seyfert I Galaxies PKS 1502+036 and PKS 2004-447
Creators: name: Paliya, Vaidehi S.
name: Stalin, C. S.
name: Shukla, Amit
name: Sahayanathan, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Variable gamma-ray emission has been discovered in five Radio-loud Narrow Line Seyfert 1 (NLSy1) galaxies by the Large Area Telescope (LAT) onboard the Fermi Gamma-Ray Space Telescope. This has clearly demonstrated that these NLSy1 galaxies do have relativistic jets similar to two other cases of gamma-ray emitting Active Galactic Nuclei (AGN), namely blazars and radio galaxies. We present here our results on the multi-band analysis of two gamma-ray emitting NLSy1 galaxies namely PKS 1502+036 (z = 0.409) and PKS 2004-447 (z = 0.240) using archival data. We generate multi-band long term light curves of these sources, build their spectral energy distribution (SED) and model them using an one zone leptonic model. They resemble more to the SEDs of the flat spectrum radio quasar (FSRQ) class of AGN. We then compare the SEDs of these two sources with two other Fermi detected AGN along the traditional blazar sequence, namely the BL Lac Mrk 421 (z = 0.03) and the FSRQ 3C 454.3 (z = 0.86). The SEDs of both PKS 1502+036 and PKS 2004-447 are found to be intermediate to the SEDs of Mrk 421 and 3C 454.3. In the gamma-ray spectral index v/s gamma-ray luminosity plane, both these NLSy1 galaxies occupy a distinct position, wherein, they have luminosity between Mrk 421 and 3C 454.3, however steep gamma-ray spectra similar to 3C 454.3. Their Compton dominance as well as their X-ray spectral slope also lie between Mrk 421 and 3C 454.3. We argue that the physical properties of both PKS 1502+036 and PKS 2004$-$447 are in general similar to blazars and intermediate between FSRQs and BL Lac objects and these sources thus could fit into the traditional blazar sequence.
description: 10 pages, 6 figures, accepted for publication in the Astrophysical Journal
Analysis of Lithium Driven Electron Density Peaking in FTU Liquid Lithium Limiter Experiments
Creators: name: Szepesi, G.
name: Romanelli, M.
name: Militello, F.
name: Peeters, A. G.
name: Camenen, Y.
name: Casson, F. J.
name: Hornsby, W. A.
name: Snodin, A. P.
name: Wagner, D.
name: team, FTU
Publisher: name: arXiv
Year: 2013
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The impact of lithium impurities on the microstability and turbulent transport characteristics in the core of a typical FTU Liquid Lithium Limiter (LLL)(Mazzitelli et al., Nucl. Fusion, 2011) discharge during the density ramp-up phase is studied. A non-linear gyrokinetic analysis performed with GKW (Peeters et al.,Comp. Phys. Comm., 2009) accompanied by a quasi-linear fluid analysis is presented. We show that a centrally peaked, high concentration lithium profile contributes to the electron peaking by reducing the outward electron flux, and that it leads to inward turbulent deuterium transport through ion flux separation.
description: 23 pages, 12 figures
Accurate measures of regional lung air volumes from chest X-rays of small animals
Creators: name: O'Connell, D. W.
name: Morgan, K. S.
name: Ruben, G.
name: Croton, L. C. P.
name: Pollock, J. A.
name: Croughan, M. K.
name: McGillick, E. V.
name: Wallace, M. J.
name: Crossley, K. J.
name: Pryor, E. J.
name: Lewis, R. A.
name: Hooper, S. B.
name: Kitchen, M. J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: We present a robust technique for calculating regional volume changes within the lung from X-ray radiograph sequences captured during ventilation, without the use of computed tomography (CT). This technique is based on the change in transmitted X-ray intensity that occurs for each lung region as air displaces the attenuating lung tissue. Lung air volumes calculated from X-ray intensity changes showed a strong correlation ($R^2$=0.98) against the true volumes, measured from high-resolution CT. This correlation enables us to accurately convert projected intensity data into relative changes in lung air volume. We have applied this technique to measure changes in regional lung volumes from X-ray image sequences of mechanically ventilated, recently-deceased newborn rabbits, without the use of CT. This method is suitable for biomedical research studies and shows potential for clinical application.
description: 12 Pages, 10 Figures
Graphs with two trivial critical ideals
Creators: name: Alfaro, Carlos A.
name: Valencia, Carlos E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: Primary 05C25, Secondary 05C50, 05E99

description: The critical ideals of a graph are the determinantal ideals of the generalized Laplacian matrix associated to a graph. A basic property of the critical ideals of graphs asserts that the graphs with at most k trivial critical ideals, $Γ_{\leq k}$, are closed under induced subgraphs. In this article we find the set of minimal forbidden subgraphs for $Γ_{\leq 2}$, and we use this forbidden subgraphs to get a classification of the graphs in $Γ_{\leq 2}$. As a consequence we give a classification of the simple graphs whose critical group has two invariant factors equal to one. At the end of this article we give two infinite families of forbidden subgraphs.
description: 15 pages, 2 figures
Gilson, Étienne, De Aristóteles a Darwin. Ed. EUNSA (Colección Cultural de Bolsillo «Temas NT», n.° 30). 1 vol. de 352 ps. 110x180. Pamplona. 1976
Creators: name: Marques, José A.
Publisher: name: Theologica
Year: 1977

description: Theologica, v. 12 n. 1-4 (1977)
Unified treatment of exact and approximate scalar electromagnetic wave scattering
Creators: name: Pang, Subeen
name: Barbastathis, George
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Under conditions of strong scattering, a dilemma often arises regarding the best numerical method to use. Main competitors are the Born series, the Beam Propagation Method, and direct solution of the Lippmann-Schwinger equation. However, analytical relationships between the three methods have not yet, to our knowledge, been explicitly stated. Here, we bridge this gap in the literature. In addition to overall insight about aspects of optical scattering that are best numerically captured by each method, our approach allows us to derive approximate error bounds to be expected under various scattering conditions.
Composite vortices in nonlinear circular waveguide arrays
Creators: name: Leykam, Daniel
name: Malomed, Boris
name: Desyatnikov, Anton S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: It is known that, in continuous media, composite solitons with hidden vorticity, which are built of two mutually symmetric vortical components whose total angular momentum is zero, may be stable while their counterparts with explicit vorticity and nonzero total angular momentum are unstable. In this work, we demonstrate that the opposite occurs in discrete media: hidden vortex states in relatively small ring chains become unstable with the increase of the total power, while explicit vortices are stable, provided that the corresponding scalar vortex state is also stable. There are also stable mixed states, in which the components are vortices with different topological charges. Additionally, degeneracies in families of composite vortex modes lead to the existence of long-lived breather states which can exhibit vortex charge fipping in one or both components.
description: 14 pages, 6 figures, to appear in the Journal of Optics special issue "Singular Optics"
Hyperspherical approach to atom--dimer collision with the Jacobi boundary condition
Creators: name: Zhao, Cai-Yun
name: Zhang, Yi
name: Han, Hui-Li
name: Shi, Ting-Yun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: In this study, we investigate atom--dimer scattering within the framework of the hyperspherical method. The coupled channel Schrödinger equation is solved using the R-matrix propagation technique combined with the smooth variable discretization method. In the matching procedure, the asymptotic wave functions are expressed in the rotated Jacobi coordinates. We apply this approach to the elastic scattering $^{3}$He(T$\uparrow$) + $^{4}$He$_{2}$ and H$\uparrow$ + H$\uparrow$Li processes. The convergence of the scattering length as a function of the propagation distance is studied. We find that the method is reliable and can provide considerable savings over previous propagators.
High-resolution Imaging of the Gegenschein and the Geometric Albedo of Interplanetary Dust
Creators: name: Ishiguro, Masateru
name: Yang, Hongu
name: Usui, Fumihiko
name: Pyo, Jeonghyun
name: Ueno, Munetaka
name: Ootsubo, Takafumi
name: Kwon, Suk Minn
name: Mukai, Tadashi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We made optical observations of the Gegenschein using a liquid-nitrogen-cooled wide-field camera, Wide-field Imager of Zodiacal light with ARray Detector (WIZARD), between March 2003 and November 2006. We found a narrow brightness enhancement superimposed on the smooth gradient of the Gegenschein at the exact position of the antisolar point. Whereas the Gegenschein morphology changed according to the orbital motion of the Earth, the maximum brightness coincided with the antisolar direction throughout the year. We compared the observed morphology of the Gegenschein with those of models in which the spatial density of the interplanetary dust cloud was considered and found that the volume scattering phase function had a narrow backscattering enhancement. The morphology was reproducible with a spatial distribution model for infrared zodiacal emission. It is likely that the zero-phase peak (the so-called opposition effect) was caused by coherent backscattering and/or shadow-hiding effects on the rough surfaces of individual dust particles. These results suggest that big particles are responsible for both zodiacal light and zodiacal emission. Finally, we derived the geometric albedo of the smooth component of interplanetary dust, assuming big particles, and obtained a geometric albedo of 0.06+-0.01. The derived albedo is in accordance with collected dark micrometeorites and observed cometary dust particles. We concluded that chondritic particles are dominant near Earth space, supporting the recent theoretical study by dynamical simulation.
description: 34 pages, 14 Figures, 2 Tables, Accepted on February 11, 2013, for the publication of ApJ
Fokker-planck Multi-species Equations In The Adiabatic Asymptotics
Creators: name: Filbet, Francis
name: Negulescu, Claudia
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: The main concern of the present paper is the study of the multi-scale dynamics of thermonuclear fusion plasmas via a multi-species Fokker-Planck kinetic model. One of the goals is the generalization of the standard Fokker-Planck collision operator to a multispecies one, conserving mass, total momentum and energy, as well as satisfying Boltzmann's H-theorem. Secondly, the paper investigates in more details the reduced model used for the electron description in present simulations, and which considers the electrons in a thermodynamic equilibrium (adiabatic regime), whereas the ions are kept kinetic. On the one hand, we perform some mathematical asymptotic limits to obtain in the electron/ion low mass ratio limit the above-mentioned electron adiabatic regime. On the other hand, we develop a numerical scheme , based on a Hermite spectral method, and perfom numerical simulations to illustrate and investigate in more details this asymptotics.
A mechanism for $π$ phase shifts in Little-Parks experiments: application to 4Hb-TaS$_2$ and to 2H-TaS$_2$ intercalated with chiral molecules
Creators: name: Fischer, Mark H.
name: Lee, Patrick A.
name: Ruhman, Jonathan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Recently, unusual $π$ phase shifts in Little-Parks experiments performed on two systems derived from the layered superconductor 2H-TaS$_2$ were reported. These systems share the common feature that additional layers have been inserted between the 1H-TaS$_2$ layers. In both cases, the $π$ phase shift has been interpreted as evidence for the emergence of exotic superconductivity in the 1H layers. Here, we propose an alternative explanation assuming that superconductivity in the individual 1H layers is of conventional $s$-wave nature derived from the parent 2H-TaS$_2$. We show that a negative Josephson coupling between otherwise decoupled neighboring 1H layers can explain the observations. Furthermore, we find that the negative coupling can arise naturally assuming a tunneling barrier containing paramagnetic impurities. An important ingredient is the suppression of non-spin-flip tunneling due to spin-momentum locking of Ising type in a single 1H layer together with the inversion symmetry of the double layer. In the exotic superconductivity scenario, it is challenging to explain why the critical temperature is almost the same as in the parent material and, in the 4Hb case, the superconductivity's robustness to disorder. Both are non-issues in our picture, which also exposes the common features that are special in these two systems.
Generalized Wiedemann-Franz law in a two-site charge Kondo circuit: Lorenz ratio as a manifestation of the orthogonality catastrophe
Creators: name: Kiselev, M. N.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We show that the transport integrals of the two-site charge Kondo circuits connecting various multi-channel Kondo simulators satisfy the generalized Wiedemann-Franz law with the universal Lorenz ratios all greater than one. The magic Lorenz ratios are directly related to the Anderson's orthogonality catastrophe in quantum simulators providing some additional universal measure for the strong electron-electron correlations. We present a full fledged theory for the magic Lorenz ratios and discuss possible routes for the experimental verifications of the theory.
description: 6 pages, 1 figure
Neutron Scattering and Its Application to Strongly Correlated Systems
Creators: name: Zaliznyak, Igor A.
name: Tranquada, John M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Neutron scattering is a powerful probe of strongly correlated systems. It can directly detect common phenomena such as magnetic order, and can be used to determine the coupling between magnetic moments through measurements of the spin-wave dispersions. In the absence of magnetic order, one can detect diffuse scattering and dynamic correlations. Neutrons are also sensitive to the arrangement of atoms in a solid (crystal structure) and lattice dynamics (phonons). In this chapter, we provide an introduction to neutrons and neutron sources. The neutron scattering cross section is described and formulas are given for nuclear diffraction, phonon scattering, magnetic diffraction, and magnon scattering. As an experimental example, we describe measurements of antiferromagnetic order, spin dynamics, and their evolution in the La(2-x)Ba(x)CuO(4) family of high-temperature superconductors.
description: 31 pages, chapter for "Strongly Correlated Systems: Experimental Techniques", edited by A. Avella and F. Mancini
On Borel summability and analytic functionals
Creators: name: Estrada, Ricardo
name: Vindas, Jasson
Publisher: name: arXiv
Year: 2013
Subjects: subject: Complex Variables (math.CV)
subject: Classical Analysis and ODEs (math.CA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 30D15, 40G10, 46F15

description: We show that a formal power series has positive radius of convergence if and only if it is uniformly Borel summable over a circle with center at the origin. Consequently, we obtain that an entire function $f$ is of exponential type if and only if the formal power series $\sum_{n=0}^{\infty}f^{(n)}(0)z^{n}$ is uniformly Borel summable over a circle centered a the origin. We apply these results to obtain a characterization of those Silva tempered ultradistributions which are analytic functionals. We also use Borel summability to represent analytic functionals as Borel sums of their moment Taylor series over the Borel polygon.
description: 8 pages
title: Thomas Fischer, Noricum. Orbis Provinciarum
Creators: name: Scherrer, Peter
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Thomas Fischer, Noricum. Orbis Provinciarum. Zaberns Bildbände zur Archäologie. Philipp von Zabern, Mainz 2002. 157 Seiten, 226 Abbildungen.
Volatile Transport inside Super-Earths by Entrapment in the Water Ice Matrix
Creators: name: Levi, Amit
name: Sasselov, Dimitar
name: Podolak, Morris
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Whether volatiles can be entrapped in a background matrix composing planetary envelopes and be dragged via convection to the surface is a key question in understanding atmospheric fluxes, cycles and composition. In this paper we consider super-Earths with an extensive water mantle (i.e. water planets), and the possibility of entrapment of methane in their extensive water ice envelopes. We adopt the theory developed by van der Waals & Platteeuw (1959) for modelling solid solutions, often used for modelling clathrate hydrates, and modify it in order to estimate the thermodynamic stability field of a new phase, called methane filled ice Ih. We find that in comparison to water ice VII the filled ice Ih structure may be stable not only at the high pressures but also at the high temperatures expected at the core-water mantle transition boundary of water planets.
description: 20 pages, 6 figures, accepted for publication in the astrophysical journal
title: Les tombes celitques situées près d'Heidolsheim
Creators: name: Klein, [?]
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Les tombes celitques situées près d'Heidolsheim, rapport présenté au comité de la soc. pour la conservation des monuments historiques d'Alsace par Max de Ring sécrét. de la soc. Strassbourg 1857. 16 S. 8°. mit 3 Taf.
Single-active-element demultiplexed multi-photon source
Creators: name: Hansen, Lena M.
name: Carosini, Lorenzo
name: Jehle, Lennart
name: Giorgino, Francesco
name: Houvenaghel, Romane
name: Vyvlecka, Michal
name: Loredo, Juan C.
name: Walther, Philip
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Temporal-to-spatial demultiplexing routes non-simultaneous events of the same spatial mode to distinct output trajectories. This technique has now been widely adopted because it gives access to higher-number multi-photon states when exploiting solid-state quantum emitters. However, implementations so far have required an always-increasing number of active elements, rapidly facing resource constraints. Here, we propose and demonstrate a demultiplexing approach that utilizes only a single active element for routing to, in principle, an arbitrary number of outputs. We employ our device in combination with a high-efficiency quantum dot based single-photon source, and measure up to eight demultiplexed highly indistinguishable single photons. We discuss the practical limitations of our approach, and describe in which conditions it can be used to demultiplex, e.g., tens of outputs. Our results thus provides a path for the preparation of resource-efficient larger-scale multi-photon sources.
description: 7 pages, 7 figures
Rüppel, Ernesto, A captação da realidade, segundo S. Tomás de Aquino. Livraria Cruz. Vol. de 150 pgs, 235x165. Braga. 1974
Creators: name: Faria, Manuel Ferreira De
Publisher: name: Theologica
Year: 1977

description: Theologica, v. 12 n. 1-4 (1977)
Stalled phase transition model of high-elastic polymer
Creators: name: Atrazhev, V. V.
name: Burlatsky, S. F.
name: Dmitriev, D. V.
name: Sultanov, V. I.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The microscopic model of semi-crystalline polymer in high-elastic state is proposed. The model is based on the assumption that, below the melting temperature, the semi-crystalline polymer comprises crystal nuclei connected by stretched chain segments (SCS) with random configuration of monomers. The key factor that stalls the phase transition below the melting temperature is the tension of the SCS. External stress applied to the polymer also shifts the equilibrium and causes unfolding of the nuclei, which enables large reversible deformation of the polymer without loss of integrity. The simple 1D model predicts plateau in stress-strain curve of high-elastic polymer above the yield stress, which agrees with experimental observations. The model prediction for the temperature dependence of polytetrafluoroethylene (PTFE) yield stress in high-elastic state is in satisfactory agreement with experiment.
A comprehensive study of the inclusive production of negative pions in p+p collisions for interaction energies from 3 GeV to 13 TeV covering the non-perturbative sector of the Strong Interaction
Creators: name: Fischer, H. G.
name: Makariev, M.
name: Varga, D.
name: Wenig, S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Over the past 60 years a rich sample of experimental results concerning the inclusive production of $π^-$ mesons has been obtained spanning a range from about 3 GeV to 13 TeV in interaction energy. This paper attempts a model-independent overview of these results with the aim at obtaining an internally consistent data description on a dense grid over the three inclusive variables transverse momentum, rapidity or Feynman $x_F$ and interaction energy. The study concentrates on the non-perturbative sector of the strong interaction by limiting the transverse momenta to $p_T <$ 1.3 GeV/c. The three-dimensional interpolation which is mandatory and necessary for this aim is shown to provide a controlled systematic precision of better than 5%. This accuracy allows for a critical inspection of each of the 40 experiments concerned in turn. It also allows precision tests of some of the physics concepts developed around inclusive processes like energy scaling, "thermal" production and the evolution of transverse momenta.
description: 199 pages, 198 figures
Additional file 1 of The translation and psychometrics Persian version of irrational food belief scale
Creators: name: Afsahi, Fatemeh
name: Alimehdi, Mansoor
name: Sharif-Nia, Hamid
Publisher: name: figshare
Year: 2023
Subjects: subject: Space Science
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Supplementary Material 1
title: Edouard Piette, Hiatus et lacune. Vestiges de la période de transition dans la grotte du Mas-d'Azil, Beaugency 1895
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Ed. Piette, Hiatus et lacune. Vestiges de la période de transition dans la grotte du Mas-d'Azil. Beaugency 1895. 8. 44 S.
Entanglement entropy of near-extremal black hole
Creators: name: Aref'eva, I.
name: Rusalev, T.
name: Volovich, I.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study how the entanglement entropy of the Hawking radiation derived using island recipe for the Reissner-Nordström black hole behaves as the black hole mass decreases. A general answer to the question essentially depends not only on the character of decreasing of the mass but also on decreasing of the charge. We assume the specific relationship between the charge and mass $Q^2=GM^2[1-\left(\frac{M}μ\right)^{2ν} ]$, which we call the constraint equation. We discuss whether it is possible to have a constraint so that the entanglement entropy does not have an explosion at the end of evaporation, as happens in the case of thermodynamic entropy and the entanglement entropy for the Schwarzschild black hole. We show that for some special scaling parameters, the entanglement entropy of radiation does not explode as long as the mass of the evaporating black hole exceeds the Planck mass.
description: 25 pages, 13 figures
AGN and Starburst Radio Emission from Optically Selected QSOs
Creators: name: Condon, J. J.
name: Kellermann, K. I.
name: Kimball, Amy E.
name: Ivezic, Zeljko
name: Perley, R. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We used the 1.4 GHz NVSS to study radio sources in two color-selected QSO samples: a volume-limited sample of 1313 QSOs defined by M_i < -23 in the redshift range 0.2 < z < 0.45 and a magnitude-limited sample of 2471 QSOs with m_r < 18.5 and 1.8 < z < 2.5. About 10% were detected above the 2.4 mJy NVSS catalog limit and are powered primarily by AGNs. The space density of the low-redshift QSOs evolves as rho proportional to (1+z)^6. In both redshift ranges the flux-density distributions and luminosity functions of QSOs stronger than 2.4 mJy are power laws, with no features to suggest more than one kind of radio source. Extrapolating the power laws to lower luminosities predicts the remaining QSOs should be extremely radio quiet, but they are not. Most were detected statistically on the NVSS images with median peak flux densities S_p(mJy/beam) ~ 0.3 and 0.05 in the low- and high-redshift samples, corresponding to 1.4 GHz spectral luminosities log[L(W/Hz)] ~ 22.7$ and 24.1, respectively. We suggest that the faint radio sources are powered by star formation at rates ~20 M_sun per year in the moderate luminosity (median M_i ~ -23.4) low-redshift QSOs and ~500 M_sun per year in the very luminous (M_i} ~ -27.5) high-redshift QSOs. Such luminous starbursts [ log(L / L_sun) ~ 11.2 and 12.6, respectively] are consistent with "quasar mode" accretion in which cold gas flows fuel both AGN and starburst.
description: 17 pages, 12 figures Accepted for publication in the ApJ
[Items related to the Hudson-Fulton Celebration in Richmond, New York]
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 1909
Subjects: Hudson-Fulton Celebration, 1909.

description: Includes letters from the Richmond Borough Citizens' Committee, a notice about the Hudson-Fulton Celebration, a program from the Hudson-Fulton Celebration in the borough of Richmond, and a view of the Hudson River from West Point
Dynamic aether as a trigger for spontaneous spinorization in early Universe
Creators: name: Balakin, Alexander B.
name: Efremova, Anna O.
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In the framework of the Einstein-Dirac-aether theory we consider a phenomenological model of the spontaneous growth of the fermion number, which is triggered by the dynamic aether. The trigger version of spinorization of the early Universe is associated with two mechanisms: the first one is the aetheric regulation of behavior of the spinor field; the second mechanism can be related to a self-similarity of internal interactions in the spinor field. The dynamic aether is designed to switch on and switch off the self-similar mechanism of the spinor field evolution; from the mathematical point of view, the key of such a guidance is made of the scalar of expansion of the aether flow, proportional to the Hubble function in the isotropic cosmological model. Two phenomenological parameters of the presented model are shown to be considered as factors predetermining the total number of fermions born in the early Universe.
description: 12 pages, 4 figures
title: Bernhard Maier, Die Religion der Germanen. Götter - Mythen - Weltbild
Creators: name: Simek, Rudolf
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Bernhard Maier, Die Religion der Germanen. Götter - Mythen - Weltbild. C. H. Beck Verlag, München 2003. 206 Seiten, 7 Abbildungen.
title: Non-Binary Universities - Vademekum zu geschlechtergerecht(er)en Hochschulen
Creators: name: Akademie der bildenden Künste Wien
Publisher: name: Akademie der bildenden Künste Wien
Year: 2019

description: Die Broschüre befasst sich mit Möglichkeiten von Ungleichbehandlung im Hochschulalltag. Es werden Barrieren aufgezeigt, die es für trans, inter* und nicht-binäre Menschen schwierig machen (können), an Hochschulen zu studieren, zu lehren und/oder zu arbeiten. Sie soll als Orientierungs- und Argumentationshilfe dienen und antidiskriminatorische Handlungsmöglichkeiten aufzeigen sowie Anregungen, Lehr-/ Lernräume und Arbeitsräume an Hochschulen für Menschen aller Geschlechter respektvoll, diskriminierungskritisch und emanzipatorisch zu gestalten, geben.
Dissociation of Pseudotensor Mesons through Critical Temperature
Creators: name: Türkan, A.
name: Süngü, J. Y.
name: Güngör, E.
name: Reisoğlu, H.
name: Veliev, E. Veli
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We have computed the masses and decay constants of isotriplet $π_2(1670)$, the isoscalar $η_2(1645)$ and $η_2(1870)$ states as the ground-state nonet of $1^1D_2$ case within the Thermal QCD sum rules framework. This method is applied to the spectral changes of pseudotensor mesons at high temperatures including quark, gluon, and mixed condensates up to the five dimensions. We found that their masses and decay constants are insensitive to temperature in low-temperature regions. At the near-critical temperature, we observed an exponential decrease of the masses of $π_2$, $η_2(1645)$, and $η_2(1870)$, but while the decay constant of $π_2$ is fallen, that of $η_2(1645)$ and $η_2(1870)$ is increased as a function of temperature. The modification of condensates at $T\neq 0$ is crucial to the change of considered mesons properties in a hot medium. We discuss and interpret the implications of the physical meaning of our results.
description: 13 pages, 7 figures, 3 Table
title: Christer Bruun (Hrsg.), The Roman Middle Republic politics, religion, and historiography
Creators: name: Linke, Bernhard
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Christer Bruun (Hrsg.), The Roman Middle Republic politics, religion, and historiography. Acta Instituti Romani Finlandiae, Band 23. Institutum Romanum Finlandiae, Rom 2000. VIII und 310 Seiten, 31 Abbildungen.
P. O. Faria, Perguntas sobre Fátima e «Fátima Desmascarada». Livraria Cruz. Vol. de 288 pgs. 211x145. Braga. 1975
Creators: name: Faria, Manuel Ferreira De
Publisher: name: Theologica
Year: 1977

description: Theologica, v. 12 n. 1-4 (1977)