cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Multiscale porosity in mesoporous bioglass 3D-printed scaffolds for bone regeneration
Creators: name: Gomez-Cerezo, M. Natividad
name: Pena, Juan
name: Ivanovski, Saso
name: Arcos, Daniel
name: Vallet-Regi, Maria
name: Vaquette, Cedryck
Publisher: name: arXiv
Year: 2021
Subjects: subject: Tissues and Organs (q-bio.TO)
subject: FOS: Biological sciences

description: In order to increase the bone forming ability of MBG-PCL composite scaffold, microporosity was created in the struts of 3D-printed MBG-PCL scaffolds for the manufacturing of a construct with a multiscale porosity consisting of meso-, micro- and macro-pores. 3D-printing imparted macroporosity while the microporosity was created by porogen removal from the struts, and the MBG particles were responsible for the mesoporosity. The scaffolds were 3D-printed using a mixture of PCL, MBG and phosphate buffered saline (PBS) particles, subsequently leached out. Microporous-PCL (pPCL) as a negative control, microporous MBG-PCL (pMBG-PCL) and non-microporous-MBG-PCL (MBG-PCL) were investigated. Scanning electron microscopy, mercury intrusion porosimetry and micro-computed tomography demonstrated that the PBS removal resulted in the formation of micropores inside the struts with porosity of around 30% for both pPCL and pMBG-PCL, with both constructs displaying an overall porosity of 80-90%. In contrast, the MBG-PCL group had a microporosity of 6% and an overall porosity of 70%. Early mineralisation was found in the pMBG-PCL post-leaching out and this resulted in the formation a more homogeneous calcium phosphate layer when using a biomimetic mineralisation assay. Mechanical properties ranged from 5 to 25 MPa for microporous and non-microporous specimens, hence microporosity was the determining factor affecting compressive properties. MC3T3-E1 metabolic activity was increased in the pMBG-PCL along with an increased production of RUNX2. Therefore, the microporosity within a 3D-printed bioceramic composite construct may result in additional physical and biological benefits.
description: 34 pages, 10 figures
HOLISMOKES. VI. New galaxy-scale strong lens candidates from the HSC-SSP imaging survey
Creators: name: Canameras, R.
name: Schuldt, S.
name: Shu, Y.
name: Suyu, S. H.
name: Taubenberger, S.
name: Meinhardt, T.
name: Leal-Taixé, L.
name: Chao, D. C. -Y.
name: Inoue, K. T.
name: Jaelani, A. T.
name: More, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We have carried out a systematic search for galaxy-scale strong lenses in multiband imaging from the Hyper Suprime-Cam (HSC) survey. Our automated pipeline, based on realistic strong-lens simulations, deep neural network classification, and visual inspection, is aimed at efficiently selecting systems with wide image separations (Einstein radii ~1.0-3.0"), intermediate redshift lenses (z ~ 0.4-0.7), and bright arcs for galaxy evolution and cosmology. We classified gri images of all 62.5 million galaxies in HSC Wide with i-band Kron radius >0.8" to avoid strict pre-selections and to prepare for the upcoming era of deep, wide-scale imaging surveys with Euclid and Rubin Observatory. We obtained 206 newly-discovered candidates classified as definite or probable lenses with either spatially-resolved multiple images or extended, distorted arcs. In addition, we found 88 high-quality candidates that were assigned lower confidence in previous HSC searches, and we recovered 173 known systems in the literature. These results demonstrate that, aided by limited human input, deep learning pipelines with false positive rates as low as ~0.01% can be very powerful tools for identifying the rare strong lenses from large catalogs, and can also largely extend the samples found by traditional algorithms. We provide a ranked list of candidates for future spectroscopic confirmation.
description: 5 pages and 4 figures (plus appendix), version published in A&A
The Thermodynamic Casimir Effect in $^4$He Films near $T_λ$: Monte Carlo Results
Creators: name: Hucht, Alfred
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The universal finite-size scaling function of the critical Casimir force for the three dimensional XY universality class with Dirichlet boundary conditions is determined using Monte Carlo simulations. The results are in excellent agreement with recent experiments on $^4$He Films at the superfluid transition and with available theoretical predictions.
description: 5 pages, 4 figures, accepted for publication in Phys. Rev. Lett
The effect of sowing date on cover crop biomass and nitrogen accumulation
Creators: name: Toom, Merili
name: Talgre, Liina
name: Pechter, Priit
name: Narits, Lea
name: Tamm, Sirje
name: Lauringson, Enn
Publisher: name: Agronomy Research
Year: 2019
Subjects: biomass
cover crops
nitrogen accumulation
sowing date
article

description: Cover crops are important tools for reducing nitrogen (N) leaching from the soil and improving the nutrition of cash crops. In northern regions with short autumns it is important to maximise the growing season of cover crops to achieve sufficient biomass and N accumulation. The objective of the study was to evaluate the biomass and N accumulation of cover crops at different sowing dates in August. Field experiment at Estonian Crop Research Institute was conducted in 2017 and 2018 with white mustard (Sinapis alba L.), phacelia (Phacelia tanacetifolia Benth), buckwheat (Fagopyrum esculentum Moench), berseem clover (Trifolium alexandrinum L.), field pea (Pisum sativum L.) and faba bean (Vicia faba L.). Cover crops were sown on August 3, 8, 14 and 18 in 2017 and August 3, 8, 13, 17 and 23 in 2018. The two year experiment showed that biomass and N accumulation of cover crops were reduced with delayed sowings, but the reduction mainly depended on cover crop species. White mustard, field pea and faba bean accumulated significantly higher amount of biomass and N than phacelia, buckwheat and berseem clover at all sowing dates in both years. Because of a rapid decrease in biomass, the optimum sowing time for phacelia and buckwheat should not be later than middle of August. In both year berseem clover produced the modest amount of biomass and therefore more suited as spring sown cover crop in Estonian conditions.
Magnetostriction of α-RuCl3 flakes in the zigzag phase
Creators: name: Pai, Yun-Yi
name: Marvinney, Claire E.
name: Feldman, Matthew A.
name: Lerner, Brian
name: Phang, Yoong Sheng
name: Xiao, Kai
name: Yan, Jiaqiang
name: Liang, Liangbo
name: Brahlek, Matthew
name: Lawrie, Benjamin J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Motivated by the possibility of an intermediate U(1) quantum spin liquid phase in out-of-plane magnetic fields and enhanced magnetic fluctuations in exfoliated α-RuCl3 flakes, we study magneto-Raman spectra of exfoliated multilayer α-RuCl3 in out-of-plane magnetic fields of -6 T to 6 T at temperatures of 670 mK - 4 K. While the literature currently suggests that bulk α-RuCl3 is in an antiferromagnetic zigzag phase with R3bar symmetry at low temperature, we do not observe R3bar symmetry in exfoliated α-RuCl3 at low temperatures. While we saw no magnetic field driven transitions, the Raman modes exhibit unexpected stochastic shifts in response to applied magnetic field that are above the uncertainties inferred from Bayesian analysis. These stochastic shifts are consistent with the emergence of magnetostrictive interactions in exfoliated α-RuCl3.
description: 7 pages, 5 figures
Casimir Puzzle and Casimir Conundrum: Discovery and Search for Resolution
Creators: name: Mostepanenko, V. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We review complicated problems in the Lifshitz theory describing the Casimir force between real material plates made of metals and dielectrics including different approaches to their resolution. It has been shown that both for metallic plates with perfect crystal lattices and for any dielectric plates the Casimir entropy calculated in the framework of the Lifshitz theory violates the Nernst heat theorem when the well approved dielectric functions are used in computations. The respective theoretical Casimir forces are excluded by the measurement data of numerous precision experiments. In the literature this situation received the names of the Casimir puzzle and the Casimir conundrum for the cases of metallic and dielectric plates, respectively. The review presents a summary of the main facts on this subject on both theoretical and experimental sides. Next, we discuss the main approaches proposed in the literature in order to bring the Lifshitz theory in agreement with the measurement data and with the laws of thermodynamics. Special attention is paid to the recently suggested spatially nonlocal Drude-like response functions which take into account the relaxation properties of conduction electrons, as does the standard Drude model, but lead to the theoretical results in agreement with both thermodynamics and the measurement data through the alternative response to quantum fluctuations off the mass shell. Further advances and trends in this field of research are discussed.
description: 36 pages, 9 figures
Model for the Magnetic Order and Pairing Channels in Fe Pnictide Superconductors
Creators: name: Daghofer, M.
name: Moreo, A.
name: Riera, J. A.
name: Arrigoni, E.
name: Scalapino, D. J.
name: Dagotto, E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A two-orbital model for Fe-pnictide superconductors is investigated using computational techniques on two-dimensional square clusters. The hopping amplitudes are derived from orbital overlap integrals, or by band structure fits, and the spin frustrating effect of the plaquette-diagonal Fe-Fe hopping is remarked. A spin 'striped' state is stable in a broad range of couplings in the undoped regime, in agreement with neutron scattering. Adding two electrons to the undoped ground state of a small cluster, the dominant pairing operators are found. Depending on parameters, two pairing operators were identified: they involve inter-xz-yz orbital combinations forming spin singlets or triplets, transforming according to the B_2g and A_2g representations of the D_4h group, respectively.
description: 4 pages, 4 figures, terminology for pairing symmetries improved, accepted for Phys. Rev. Lett
จิตวิทยาการเรียนรู้ภายใต้ความปรกติใหม่
Creators: name: จรินทร วินทะไชย์
Publisher: name: คณะครุศาสตร์ จุฬาลงกรณ์มหาวิทยาลัย
Year: 2564
Subjects: จิตวิทยาการเรียนรู้
ความปรกติใหม่

description: วารสารวิธีวิทยาการวิจัย, 34, 3, 219-237
Quellen zur Kirchenreform im Zeitalter der großen Konzilien des 15. Jahrhunderts. Erster Teil: Die Konzilien von Pisa (1409) und Konstanz (1414-1418)
Creators: name: Wünsch, Thomas
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1997

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 46 Nr. 1 (1997)
FRW Cosmology in $f(Q,T)$ Gravity
Creators: name: Godani, Nisha
name: Samanta, Gauranga C
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we considered the study of Friedmann-Robertson-Walker (FRW) model in the framework of $f(Q,T)$ gravity, an extension of symmetric teleparallel gravity, recently defined by Y. Xu et al. \cite{Xu}. The non-linear model $f(Q,T)=-αQ-βT^2$, where $α>0$ and $β>0$ are constants, is taken into account. The equation of state of perfect fluid is assumed and 31 points of Hubble data are used to constrain the value of model parameter. To explore the evolution of the universe, the numerical solutions of cosmological implications such as Hubble parameter, deceleration parameter, apparent magnitude and luminosity distance are determined and the energy conditions are examined. The theoretical results of Hubble parameter are compared with $Λ$CDM model. Further, 57 Supernova data (42 from Supernova cosmology project and 15 from Calán/ Tolono supernova survey) are also used to have consistent results of apparent magnitude and luminosity distance.
description: 15 pages, 8 figures, accepted for publication in Int. J. Geom. Method. Mod. Phys
MICE Destination Competitiveness and Air Transportation Facility – Thailand
Creators: name: Chanmatha Sriraksa, Pongsa Pornchaiwiseskul
Publisher: name: Faculty of Education, Chulalongkorn University
Year: 2021
Subjects: MICE destination competitivenes
air transportation facility
multinomial logistic regression

description: Journal of Research Methodology, 34, 3, 239-264
บทบาทและสัมฤทธิผลของมหาวิทยาลัยราชภัฏ: กรณีศึกษานำร่อง
Creators: name: สมหวัง พิธิยานุวัฒน์, จิราทัศน์ รัตนมณีฉัตร, แทน พิธิยานุวัฒน์
Publisher: name: คณะครุศาสตร์ จุฬาลงกรณ์มหาวิทยาลัย
Year: 2564
Subjects: มหาวิทยาลัยราชภัฏ
แผนยุทธศาสตร์
กรณีศึกษานำร่อง

description: วารสารวิธีวิทยาการวิจัย, 34, 3, 265-286
Dynamical constants for electromagnetic fields with elliptic-cylindrical symmetry
Creators: name: Rodríguez-Lara, B. M.
name: Jáuregui, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Classical Physics (physics.class-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Taking into account the characteristics of a free scalar field in elliptic coordinates, a new dynamical variable is found for the free electromagnetic field. The conservation law associated to this variable cannot be obtained by direct application of standard Noether theorem since the symmetry generator is of second order. Consequences on the expected mechanical behavior of an atomic system interacting with electromagnetic waves exhibiting such a symmetry are also discussed.
description: 17 pages, 5 figures, revised version, animated graphs provided at http://www.fisica.unam.mx/research/movies
title: Autonomous Fire Detection and Suppression Using Raspberry Pi and Computer Vision
title: Intelligent Fire Detection and Suppression System Leveraging Raspberry Pi and Computer Vision
titleType: AlternativeTitle
Creators: name: Aziz, Faisal
Publisher: name: Zenodo
Year: 2025

description: This paper presents a Smart Fire Extinguisher system utilizing a Raspberry Pi camera for fire detection and suppression. The system employs computer vision algorithms to detect fire in real-time based on visual cues like color and motion. Once detected, an intelligent algorithm assesses the fire's characteristics (size, intensity, potential spread) and determines the appropriate amount of suppressant needed. The system operates autonomously, reducing the need for human intervention, and integrates with fire alarms and emergency response systems. With its ability to continuously improve through deep learning, the proposed system offers early detection, efficient suppression, and enhanced fire safety in various environments.Keywords: Smart Fire Extinguisher, Raspberry Pi Camera, Computer Vision, Machine Learning, Fire Detection, Fire Suppression, Autonomous System.
การประยุกต์อนุกรมเวลาแบบขัดขวางสำหรับการประเมินผลกระทบ นโยบายการบริหารและการพัฒนาจังหวัดชายแดนภาคใต้
Creators: name: อิศรัฏฐ์ รินไธสง
Publisher: name: คณะครุศาสตร์ จุฬาลงกรณ์มหาวิทยาลัย
Year: 2564
Subjects: การประเมินผลกระทบเชิงนโยบาย
สามจังหวัดชายแดนภาคใต้
การวิเคราะห์อนุกรมเวลาแบบขัดขวาง

description: วารสารวิธีวิทยาการวิจัย, 34, 3, 287-306
Complete 1-loop test of AdS/CFT
Creators: name: Gromov, Nikolay
name: Vieira, Pedro
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze nested Bethe ansatz (NBA) and the corresponding finite size corrections. We find an integral equation which describes these corrections in a closed form. As an application we considered the conjectured Beisert-Staudacher (BS) equations with the Hernandez-Lopez dressing factor where the finite size corrections should reproduce generic one (worldsheet) loop computations around any classical superstring motion in the AdS_5 x S^5 background with exponential precision in the large angular momentum of the string states. Indeed, we show that our integral equation can be interpreted as a sum over all physical fluctuations and thus prove the complete 1-loop consistency of the BS equations. In other words we demonstrate that any local conserved charge (including the AdS Energy) computed from the BS equations is indeed given at 1-loop by the sum of charges of fluctuations up to exponentially suppressed contributions. Contrary to all previous studies of finite size corrections, which were limited to simple configurations inside rank one subsectors, our treatment is completely general.
description: 12 figures. References added. Couple of words added to abstract
Kink-like Solitons in Quantum Droplet
Creators: name: Shukla, Aradhya
name: Neeraj
name: Panigrahi, Prasanta K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Solitonic excitations of the one-dimensional quantum droplets are obtained, which smoothly connect vacuum with the flat-top droplet, akin to compactons in classical liquids. These solitons are of the kink type, necessarily residing on a constant pedestal, determined by the mean-field repulsion and beyond mean field quantum correction and having exactly one-third of the uniform condensate amplitude. Akin to the kinks, the propagating modes occur in pairs and are phase-locked with the background. The lowest chemical potential and condensate amplitude at the flat-top boundary matches with the self-trapped quantum droplet. More general excitations of analogous kind are obtained through the Möbius transform, which connect the required solutions to elliptic functions in general.
description: 11 Pages, 1 Figure
Jan Szumski, Sowietyzacja zachodniej Białorusi 1944-1953. Propaganda i edukacja w służbie ideologii
Creators: name: Hierasimowicz, Konrad
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 4 (2013)
A morphology revaluation of galaxies in common from the Catalog of Isolated Galaxies and the Sloan Digital Sky Survey (DR6)
Creators: name: Hernández-Toledo, H. M.
name: Váquez-Mata, J. A.
name: Martínez-Vázquez, L. A.
name: Avila-Reese, V.
name: Méndez-Hernández, H.
name: Ortega-Esbrí, S.
name: Miranda-Núñez, J. P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a revaluation of the optical morphology for 549 galaxies from the Catalog of Isolated Galaxies (Karachentseva 1973) that are available in the SDSS (DR6). Both the high resolution and high dynamic range of the SDSS images and our semi-automatic image processing scheme, allow for a major quality and uniform morphological analysis. The processing scheme includes (1) sky-subtracted, cleaned, and logarithmic scaled g-band images; (2) filtered-enhanced versions of the images in (1); and (3) the RGB images available in the SDSS database. Special attention was paid for distinguishing between E, S0, and Sa candidates through an additional analysis of (4) the surface brightness, ε, PA, and A_4/B_4 Fourier series expansion profiles. The median type in the sample corresponds to Sbc, with 65% of the sample being of this type or later. A scarce population of E (3.5%) and S0 (5%) galaxies, and a non-negligible 14% fraction of SaSab spirals are identified. We calculate also the gri absolute magnitudes corrected by Galactic and internal extinctions and present the g-i color distribution and the color-magnitude diagram. Among the spirals, we find fractions of strong and suspected bars of 65.8% and of 33.3% of rings. For the E galaxies we find a richness of distinct substructure in their isophotal shape and also of morphological distortions. At least 78% of the ellipticals show some kind of distortion, suggesting that these galaxies suffered late dry mergers. Finally, we calculate the CAS (concentration, asymmetry and clumpiness) structural parameters in the ugriz bands. We analyze the loci of our isolated galaxies in different projections of the CAS volume and discuss some trends of these parameters with the color band, as well as with the type and the galaxy color. [abridged]
description: 20 pages, 15 figures, uses emulateapj.cls. To appear in Astronomical Journal. An atlas of mosaics containing [(1), (2) and (3), see abstract] images for Sab-Sm/Irr types and [(1), (2), (3), (4)] images for E/S0/Sa types was produced and is available at http://132.248.1.210
Mezirinae , Oshanin 1908
Creators: name: Heiss, Ernst
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Aradidae

description: Subfamily Mezirinae, Oshanin 1908
Mezirina Oshanin, 1908: 478 (Mezirina as subfamily). As replacement name for Brachyrhynchinae Amyot & Serville, 1843. Type genus: Mezira Amyot & Serville, 1843.
description: Published as part of Heiss, Ernst, 2012, Annotated catalogue of the flat bug family Aradidae Brullé, 1836 of Madagascar and adjacent islands (Hemiptera: Heteroptera), pp. 45-63 in Zootaxa 3426 (1) on page 50, DOI: 10.11646/zootaxa.3426.1.3, http://zenodo.org/record/214110
Non-BPS Attractors in 5d and 6d Extended Supergravity
Creators: name: Andrianopoli, L.
name: Ferrara, S.
name: Marrani, A.
name: Trigiante, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We connect the attractor equations of a certain class of N=2, d=5 supergravities with their (1,0), d=6 counterparts, by relating the moduli space of non-BPS d=5 black hole/black string attractors to the moduli space of extremal dyonic black string d=6 non-BPS attractors. For d = 5 real special symmetric spaces and for N = 4,6,8 theories, we explicitly compute the flat directions of the black object potential corresponding to vanishing eigenvalues of its Hessian matrix. In the case N = 4, we study the relation to the (2,0), d=6 theory. We finally describe the embedding of the N=2, d=5 magic models in N=8, d=5 supergravity as well as the interconnection among the corresponding charge orbits.
description: 1+27 pages
Hamiltonian structure of the guiding-center Vlasov-Maxwell equations
Creators: name: Brizard, Alain J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The Hamiltonian structure of the guiding-center Vlasov-Maxwell equations is presented in terms of a Hamiltonian functional and a guiding-center Vlasov-Maxwell bracket. The bracket, which is shown to satisfy the Jacobi identity exactly, is used to show that the guiding-center momentum and angular-momentum conservation laws can also be expressed in Hamiltonian form.
description: 6 pages. arXiv admin note: text overlap with arXiv:2107.08129
Bass-Serre rigidity results in von Neumann algebras
Creators: name: Chifan, Ionut
name: Houdayer, Cyril
Publisher: name: arXiv
Year: 2008
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L10, 46L54, 46L55

description: We obtain new Bass-Serre type rigidity results for ${\rm II_1}$ equivalence relations and their von Neumann algebras, coming from free ergodic actions of free products of groups on the standard probability space. As an application, we show that any non-amenable factor arising as an amalgamated free product of von Neumann algebras $\mathcal{M}_1 \ast_B \mathcal{M}_2$ over an abelian von Neumann algebra $B$, is prime, i.e. cannot be written as a tensor product of diffuse factors. This gives, both in the type ${\rm II_1}$ and in the type ${\rm III}$ case, new examples of prime factors.
description: 27 pages.
Effect of high harmonic loops on gravitational wave bounds from cosmic strings
Creators: name: Pazouli, Despoina
name: Palapanidis, Konstantinos
name: Avgoustidis, Anastasios
name: Copeland, Edmund J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Based on a binary tree model for the self intersection of cosmic string loops containing high harmonics we estimate the number of self-intersections of the parent and daughter loops and the associated cusp production to determine the most likely number of cusp events per period on the resultant non-self intersecting loops, and provide an updated calculation for the gravitational wave signal that arrives on Earth from cusps on such loops. This is done for different numbers of cusps supported from the cosmic strings of the network, and for different harmonic distributions on the loops. We plot our results of the event rate of gravitational waves emanating from the cusps in terms of redshift, having fixed the value of $Gμ$ and the received frequency of the signal, and compare our results to those in [1, 2].
description: 29 pages, 4 figures, 4 tables
Localization effects due to a random magnetic field on heat transport in a harmonic chain
Creators: name: Cane, Gaëtan
name: Bhat, Junaid Majeed
name: Dhar, Abhishek
name: Bernardin, Cédric
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We consider a harmonic chain of $N$ oscillators in presence of a disordered magnetic field. The ends of the chain are connected to heat baths and we study the effects of the magnetic field randomness on the heat transport. The disorder, in general, causes localization of the normal modes due to which a system becomes insulating. However, for this system, the localization length diverges as the normal mode frequency approaches zero. Therefore, the low frequency modes contribute to the transmission, $\mathcal{T}_N(ω)$, and the heat current goes down as a power law with the system size, $N$. This power law is determined by the small frequency behaviour of some Lyapunov exponent, $λ(ω)$, and the transmission in the thermodynamic limit, $\mathcal{T}_\infty(ω)$. While it is known that in the presence of a constant magnetic field $\mathcal{T}_\infty(ω)\sim ω^{3/2},~ ω^{1/2}$ depending on the boundary conditions, we find that the Lyapunov exponent for the system behaves as $λ(ω)\simω$ for $\expval{B}\neq 0$ and $λ(ω)\simω^{2/3}$ for $\expval{B}=0$. Therefore, we obtain different power laws for current vs $N$ depending on $\expval{B}$ and the boundary conditions.
The AGN nature of 11 out of 12 Swift/RXTE unidentified sources through optical and X-ray spectroscopy
Creators: name: Landi, R.
name: Masetti, N.
name: Morelli, L.
name: Palazzi, E.
name: Bassani, L.
name: Malizia, A.
name: Bazzano, A.
name: Bird, A. J.
name: Dean, A. J.
name: Galaz, G.
name: Minniti, D.
name: Ubertini, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Swift Burst Alert Telescope (BAT) is performing a high Galactic latitude survey in the 14-195 keV band at a flux limit of ~10^{-11} erg cm^{-2} s^{-1}, leading to the discovery of new high energy sources, most of which have not so far been properly classified. A similar work has also been performed with the RXTE slew survey leading to the discovery of 68 sources detected above 8 keV, many of which are still unclassified. Follow-up observations with the Swift X-ray Telescope (XRT) provide, for many of these objects, source localization with a positional accuracy of few arcsec, thus allowing the search for optical counterparts to be more efficient and reliable. We present the results of optical/X-ray follow-up studies of 11 Swift BAT detections and one AGN detected in the RXTE Slew Survey, aimed at identifying their counterparts and at assessing their nature. These data allowed, for the first time, the optical classification of 8 objects and a distance determination for 3 of them. For another object, a more refined optical classification than that available in the literature is also provided. For the remaining sources, optical spectroscopy provides a characterization of the source near in time to the X-ray measurement. The sample consists of 6 Seyfert 2 galaxies, 5 Seyferts of intermediate type 1.2-1.8, and one object of Galactic nature - an Intermediate Polar (i.e., magnetic) Cataclysmic Variable. Out of the 11 AGNs, 8 (~70%) including 2 Seyferts of type 1.2 and 1.5, are absorbed with NH > 10^{22} cm^{-2}. Up to 3 objects could be Compton thick (i.e. NH > 1.5 x 10^{24} cm^{-2}), but only in one case (Swift J0609.1-8636) does all the observational evidence strongly suggests this possibility.
description: 50 pages, including 16 figures and 7 tables. Accepted for publication in ApJ
Bitter Leaf Crude Extracts-Loaded Alginate Films as Potential Wound Dressings
Creators: name: Patcharaporn Wutticharoenmongkol
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยเทคโนโลยีราชมงคลธัญบุรี
Year: 2021
Subjects: bitter leaf
alginate
drug release
antioxidant
wound dressing

description: Journal of Applied Research on Science and Technology (JARST), 20, 2, 124-136
Stability of the Periodic Toda Lattice in the Soliton Region
Creators: name: Krueger, Helge
name: Teschl, Gerald
Publisher: name: arXiv
Year: 2008
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We apply the method of nonlinear steepest descent to compute the long-time asymptotics of the periodic (and slightly more generally of the quasi-periodic finite-gap) Toda lattice for decaying initial data in the soliton region. In addition, we show how to reduce the problem in the remaining region to the known case without solitons.
description: 28 pages
Gilbert H. Gornig, Das Memelland - Gestern und heute. Eine historische und rechtliche Betrachtung
Creators: name: Kimminich, Otto
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1995

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 44 Nr. 3 (1995)
Second Scale Submillimeter Variability of Sagittarius A* during flaring activity of 2019: On the Origin of Bright Near Infrared Flares
Creators: name: Murchikova, Lena
name: Witzel, Gunther
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In 2019, Sgr A* - the supermassive black hole in the Galactic Center - underwent unprecedented flaring activity in the near infrared (NIR), brightening by up to a factor of 100 compared to quiescent values. Here we report ALMA observations of Sgr A*'s continuum variability at 1.3 mm (230 GHz) - a tracer of the accretion rate - conducted one month after the brightest detected NIR flare and in the middle of the flaring activity of 2019. We develop an innovative light curve extraction technique which (together with ALMA's excellent sensitivity) allows us to obtain the light curves which are simultaneously of high time resolution (2 seconds) and high signal-to-noise ratio (~ 500). We construct an accurate intrinsic structure function of the Sgr A* submm variability, improving on previous studies by about two orders of magnitude in timescale and one order of magnitude in sensitivity. We compare the June 2019 variability behavior with that of 2001-2017, and suggest that the most likely cause of the bright NIR flares is magnetic reconnection.
description: v2: several comments, clarifications, references, and a derivation added. 9 pages, 2 figures, 1 table. Accepted to ApJL. ; v1: 8 pages, 2 figures, 1 table
ECAPA-TDNN Embeddings for Speaker Diarization
Creators: name: Dawalatabad, Nauman
name: Ravanelli, Mirco
name: Grondin, François
name: Thienpondt, Jenthe
name: Desplanques, Brecht
name: Na, Hwidong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Learning robust speaker embeddings is a crucial step in speaker diarization. Deep neural networks can accurately capture speaker discriminative characteristics and popular deep embeddings such as x-vectors are nowadays a fundamental component of modern diarization systems. Recently, some improvements over the standard TDNN architecture used for x-vectors have been proposed. The ECAPA-TDNN model, for instance, has shown impressive performance in the speaker verification domain, thanks to a carefully designed neural model. In this work, we extend, for the first time, the use of the ECAPA-TDNN model to speaker diarization. Moreover, we improved its robustness with a powerful augmentation scheme that concatenates several contaminated versions of the same signal within the same training batch. The ECAPA-TDNN model turned out to provide robust speaker embeddings under both close-talking and distant-talking conditions. Our results on the popular AMI meeting corpus show that our system significantly outperforms recently proposed approaches.
Józef Szymański, Kanonikat świecki w Małopolsce od końca XI do połowy XIII wieku
Creators: name: Wünsch, Thomas
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1997

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 46 Nr. 1 (1997)
Małgorzata Ruchniewicz, Wieś zachodniobiałoruska 1944-1953. Wybrane aspekty
Creators: name: Hierasimowicz, Konrad
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 4 (2013)
Gerard Labuda, Mieszko II król Polski (1025—1034). Czasy przełomu w dziejach panstwa polskiego
Creators: name: Kersken, Norbert
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1997

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 46 Nr. 1 (1997)
Günter Morsch, Bertrand Perz (Hrsg.), Neue Studien zu nationalsozialistischen Massentötungen durch Giftgas. Historische Bedeutung, technische Entwicklung, revisionistische Leugnung
Creators: name: Friedrich, Klaus-Peter
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 4 (2013)
Susanne Heim u.a. (Hrsg.), Die Verfolgung und Ermordung der europäischen Juden durch das nationalsozialistische Deutschland 1933-1945. Bd. 4: Polen, September 1939 - Juli 1941
Creators: name: Brakel, Alexander
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 4 (2013)
Can a wormhole generate electromagnetic field?
Creators: name: Jamil, Mubasher
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have considered the possibility of a slowly rotating wormhole surrounded by a cloud of charged particles. Due to slow rotation of the wormhole, the charged particles are dragged thereby producing an electromagnetic field. We have determined the strength of this electromagnetic field and the corresponding flux of radiation.
description: 9 pages, typos fixed
The adrenal gland and the diving response in ducks (Anas platyrhynchos)
Creators: name: Mangalam, Harry Joseph
Publisher: name: University of British Columbia
Year: 2010

description: The extreme elevation in plasma levels of norepinephrine (NE) and epinephrine (EP) which occurs during forced diving of ducks (Anas platyrhynchos) was studied before and after denervation of the adrenal glands. Elevated PaCO₂, decreased arterial pH, decreased blood glucose as well as low PaO₂ have been described as causal factors in this response. These variables, as well as blood pressure, heart rate and breathing frequency were measured in ducks dived after breathing air or pure 0₂ to clarify and quantify the mechanism involved and its physiological function. Both NE and EP concentration increased by up to 2 orders of magnitude in the 4 minute dive period, but by a significantly lesser amount if the duck breathed 0₂, before the dive. While pH and PaCO₂ were well correlated with the changes in plasma NE and EP levels during both air and 0₂ dives, both pH and PaCO₂ changed more in the 0₂ trials, indicating that they are not the primary cause of the response. Plasma glucose levels were variable. PaO₂ values less than normal correlated well with increasing NE and EP concentrations, but at high PaO₂s, there was no correlation, suggesting that hypoxia is the permissive state for the full response. Compared with breathing air, breathing O₂ before the dive attenuated the diving bradycardia, eliminated the decrease in blood pressure normally observed during dives, and caused more extreme changes in pH, PaC0₂, and of course, PaO₂. Denervating the adrenals decreased the amounts of both catecholamines released during dives after breathing air and 0₂, EP significantly more than NE. Adrenal denervation per se did not cause a significant change in heart rate, blood pressure, arterial gas tensions, pH, or plasma glucose changes during dives although the operation caused increased variation in some of the parameters. In ducks, the cause for the catecholamine release is decreasing PaO₂ and full expression of the response is dependent on intact innervation of the adrenal gland, although there is a component that is unaffected by denervation. While possible roles for this response are discussed, the true physiological function of this response remains cast in shadows.
Operator growth in the transverse-field Ising spin chain with integrability-breaking longitudinal field
Creators: name: Noh, Jae Dong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the operator growth dynamics of the transverse field Ising spin chain in one dimension as varying the strength of the longitudinal field. An operator in the Heisenberg picture spreads in the extended Hilbert space. Recently, it has been proposed that the spreading dynamics has a universal feature signaling chaoticity of underlying quantum dynamics. We demonstrate numerically that the operator growth dynamics in the presence of the longitudinal field follows the universal scaling law for one-dimensional chaotic systems. We also find that the operator growth dynamics satisfies a crossover scaling law as the longitudinal field turns on. The crossover scaling confirms that the uniform longitudinal field makes the system chaotic at any nonzero value. We also discuss the implication of the crossover scaling on the thermalization dynamics and the effect of a nonuniform local longitudinal field.
description: minor revision
Polska, Prusy, Ruś. Rozprawy ofiarowane prof. zw. dr. hab. Janowi Powierskiemu w trzydziestolecie pracy naukowej
Creators: name: Hartmann, Stefan
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1997

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 46 Nr. 1 (1997)
Quantum metrology of two-photon absorption
Creators: name: Muñoz, Carlos Sánchez
name: Frascella, Gaetano
name: Schlawin, Frank
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Two-photon absorption (TPA) is of fundamental importance in super-resolution imaging and spectroscopy. Its nonlinear character allows for the prospect of using quantum resources, such as entanglement, to improve measurement precision or to gain new information on, e.g., ultrafast molecular dynamics. Here, we establish the metrological properties of nonclassical squeezed light sources for precision measurements of TPA cross sections. We find that there is no fundamental limit for the precision achievable with squeezed states in the limit of very small cross sections. Considering the most relevant measurement strategies -- namely photon counting and quadrature measurements -- we determine the quantum advantage provided by squeezed states as compared to coherent states. We find that squeezed states outperform the precision achievable by coherent states when performing quadrature measurements, which provide improved scaling of the Fisher information with respect to the mean photon number $\sim n^4$. Due to the interplay of the incoherent nature and the nonlinearity of the TPA process, unusual scaling can also be obtained with coherent states, which feature a $\sim n^3$ scaling in both quadrature and photon-counting measurements.
description: 10 pages, 6 figures
Geometrization of quantum formalism
Creators: name: Olkhov, O. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The hypothesis is suggested that the equation for the Dirac free wave field is, in fact, a group-theoretical relation describing propagation of specific microscopic deviations of space geometry from the euclidean one (closed topological manifolds). The Dirac equation for a hydrogen atom can also be interpreted as a relation that accounts for the symmetry properties of a piece of curved space. Within the framework of this concept, atoms have no any pointlike particles (electrons) inside, and the gauge invariance of electromagnetic field proves to be the natural consequence of the basic principles of the proposed geometrical approach.
description: 11 pages, Proc.Int.WorkshopDICE2006 "Quantum Mechanics between Decoherence and Determinism", Piombino, Italy, September 11-15, 2006
Full Diversity Codes for MISO Systems Equipped with Linear or ML Detectors
Creators: name: Liu, Jing
name: Zhang, Jian-Kang
name: Wong, Kon Max
Publisher: name: arXiv
Year: 2008
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper, a general criterion for space time block codes (STBC) to achieve full-diversity with a linear receiver is proposed for a wireless communication system having multiple transmitter and single receiver antennas (MISO). Particularly, the STBC with Toeplitz structure satisfies this criterion and therefore, enables full-diversity. Further examination of this Toeplitz STBC reveals the following important properties: a) The symbol transmission rate can be made to approach unity. b) Applying the Toeplitz code to any signalling scheme having nonzero distance between the nearest constellation points results in a non-vanishing determinant. In addition, if QAM is used as the signalling scheme, then for independent MISO flat fading channels, the Toeplitz codes is proved to approach the optimal diversity-vs-multiplexing tradeoff with a ZF receiver when the number of channel uses is large. This is, so far, the first non-orthogonal STBC shown to achieve the optimal tradeoff for such a receiver. On the other hand, when ML detection is employed in a MISO system, the Toeplitz STBC achieves the maximum coding gain for independent channels. When the channel fading coefficients are correlated, the inherent transmission matrix in the Toeplitz STBC can be designed to minimize the average worst case pair-wise error probability.
description: 16 pages, 8 figures. accepted for publication in IEEE Trans. Information theory
Stanisław Achremczyk, Historia Warmii i Mazur. Od pradziejów do 1945 roku
Creators: name: Hartmann, Stefan
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1995

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 44 Nr. 3 (1995)
Graph Neural Networks for reconstruction and classification in KM3NeT
Creators: name: Reck, S.
name: Guderian, D.
name: Vermariën, G.
name: Domi, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: KM3NeT, a neutrino telescope currently under construction in the Mediterranean Sea, consists of a network of large-volume Cherenkov detectors. Its two different sites, ORCA and ARCA, are optimised for few GeV and TeV-PeV neutrino energies, respectively. This allows for studying a wide range of physics topics spanning from the determination of the neutrino mass hierarchy to the detection of neutrinos from astrophysical sources. Deep Learning techniques provide promising methods to analyse the signatures induced by charged particles traversing the detector. This document will cover a Deep Learning based approach using Graph Convolutional Networks to classify and reconstruct events in both the ORCA and ARCA detector. Performance studies on simulations as well as applications to real data will be presented, together with comparisons to classical approaches.
description: Presented at the 9th Very Large Volume Neutrino Telescope Workshop (VLVnT 2021), Prepared for submission to JINST
Karsten Linne, Florian Dierl (Hrsg.), Arbeitskräfte als Kriegsbeute. Der Fall Ost- und Südosteuropa 1939-1945
Creators: name: Reuter, Ursula
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 4 (2013)
Gli anni dieci della nuova scena italiana. Un tracciato in dieci punti
Creators: name: Mei, Silvia
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2013

description: The last generation of the Italian theatre during the years 2000-2010 presents a multifarious set of scenic forms and solutions linked through the same practices and protocols, both with and without interruption to the past; therefore, it has been considered as a sort of “third avant-garde”. Labeled as “iperscene”, the vast majority of those groups promotes a theatre of the vision where performance, visual arts and actorial work are joined together bringing about an original mix of languages and aesthetics. By adopting a historical and critical perspective, this article gives an overview of the new Italian scene and its phenomenology.
description: Annali Online  Lettere - Ferrara, VII 2 (2012)