cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
NEural Engine for Discovering Luminous Events (NEEDLE) Classifier Updates and Discoveries
Creators: name: SHENG, XINYUE
Publisher: name: Zenodo
Year: 2024

description: This presentation includes NEural Engine for Discovering Luminous Events (NEEDLE) Classifier explanation, discoveries and updates. NEEDLE (Sheng et al. 2024) is a machine-learning tool for identifying rare astronomical transients from real-time alerts. NEEDLE is trained to identify Superluminous Supernova (SLSN) and Tidal Disruption Events (TDE) candidates in data from the Zwicky Transient Facility (ZTF; Bellm et al. 2019; Graham et al. 2019). NEEDLE is running daily on public ZTF alerts, streamed via the Lasair alert broker (Williams et al. 2024), and publicly providing classification predictions as annotations on Lasair.
Conditions, activités, habitudes et bien-être dans les transports quotidiens : étude de cas à Paris-Saclay
Creators: name: Mazengani, Risienne
name: Josset, Jean-Marc
name: Soulié, Nicolas
Publisher: name: Univ Gustave Eiffel
Year: 2022
Subjects: Sciences de l'Homme et Société
Economies et finances

description: Cet article propose une analyse de l’impact d’éléments objectifs (temps, conditions, caractéristiques socio-démographiques) et subjectifs (préférences, attitudes, etc.) sur le bien-être ressenti par les utilisateurs de transports en commun. Pour cela, une enquête exploratoire a été réalisée en 2017 et 2018 sur les déplacements quotidiens de 126 étudiants (608 trajets) vers leur lieu d’étude sur le plateau de Saclay. Grâce à un questionnaire accessible depuis leur smartphone, les participants sont interrogés sur leurs trajets quotidiens (temps, conditions, activités, etc.) et attribuent une note à chaque trajet effectué. Les résultats issus de nos modèles confirment un effet négatif de la durée du transport au-delà de 80 minutes, ainsi qu’une aversion à la perte de temps par rapport à la durée habituelle du trajet. Les conditions de transport difficiles (retard, espace, bruit, etc.) ont également un impact négatif sur le bien-être des passagers. Enfin, certaines activités réalisées en période de mobilité (musique, vidéos, etc.), font varier la satisfaction apportée par les déplacements, car elles sont intéressantes ou nécessaires (musique) ou réalisées pour faire passer le temps dans les transports (jeux, visionnage de vidéos). Si les voyageurs habitués à leur trajet semblent être résignés par la durée transport (effet de résignation), ils semblent plus sensibles aux conditions de transport défavorables ainsi qu’à certaines activités pratiquées au cours des déplacements.
description: RTS - Recherche Transports Sécurité, volume 2022
Age Spreads and Systematics in λ Orionis with Gaia DR2 and the SPOTS tracks
Creators: name: Cao, Lyra
name: Pinsonneault, Marc H.
name: Hillenbrand, Lynne A.
name: Kuhn, Michael A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this paper we investigate the robustness of age measurements, age spreads, and stellar models in young pre-main sequence stars. For this effort, we study a young cluster, $λ$ Orionis, within the Orion star-forming complex. We use Gaia data to derive a sample of 357 targets with spectroscopic temperatures from spectral types or from the automated spectroscopic pipeline in APOGEE Net. After accounting for systematic offsets between the spectral type and APOGEE temperature systems, the derived properties of stars on both systems are consistent. The complex ISM, with variable local extinction, motivates a star-by-star dereddening approach. We use a spectral energy distribution (SED) fitting method calibrated on open clusters for the Class III stars. For the Class II population, we use a Gaia G-RP dereddening method, minimizing systematics from disks, accretion, and other physics associated with youth. The cluster age is systematically different in models incorporating the structural impact of starspots or magnetic fields than in nonmagnetic models. Our mean ages range from 2-3 Myr (nonmagnetic models) to 3.9$\pm$0.2 Myr in the SPOTS model (f=0.34). We find star-by-star dereddening methods distinguishing between pre-MS classes provide a smaller age spread than techniques using a uniform extinction, and infer a minimum age spread of 0.19 dex and a typical age spread of 0.35 dex after modelling age distributions convolved with observed errors. This suggests that the $λ$ Ori cluster may have a long star formation timescale and that spotted stellar models significantly change age estimates for young clusters.
description: 23 pages, 19 figures. Accepted for publication in the Astrophysical Journal
Bogoliubov transformations and fermion condensates in lattice field theories
Creators: name: Caracciolo, Sergio
name: Palumbo, Fabrizio
name: Viola, Giovanni
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We apply generalized Bogoliubov transformations to the transfer matrix of relativistic field theories regularized on a lattice. We derive the conditions these transformations must satisfy to factorize the transfer matrix into two terms which propagate fermions and antifermions separately, and we solve the relative equations under some conditions. We relate these equations to the saddle point approximation of a recent bosonization method and to the Foldy-Wouthuysen transformations which separate positive from negative energy states in the Dirac Hamiltonian.
description: 25 pages
A spanning tree model for the Heegaard Floer homology of a branched double-cover
Creators: name: Greene, Joshua
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: Given a diagram of a link K in S^3, we write down a Heegaard diagram for the branched-double cover Sigma(K). The generators of the associated Heegaard Floer chain complex correspond to Kauffman states of the link diagram. Using this model we make some computations of the homology \hat{HF}(Sigma(K)) as a graded group. We also conjecture the existence of a delta-grading on \hat{HF}(Sigma(K)) analogous to the delta-grading on knot Floer and Khovanov homology.
description: 43 pages, 20 figures
Arte para quedas
Creators: name: Pires, Lígia Villaron
Publisher: name: Labfront/UEMG
Year: 2023

description: Estamos caindo. Como enfrentar tantas crises com a angústia de se estar em queda livre? A queda exige, em primeiro lugar, uma reorganização do corpo. Nessa pesquisa, proponho que tal reorganização se dê em duas esferas: dos saberes e dos fazeres. Dos saberes, através do diálogo com pensadores não ocidentais como Ailton Krenak e Yuk Hui, para se pensar a arte, a tecnologia e a própria queda. Dos fazeres, através da reflexão de caminhos poéticos para outras formas de cair e um breve relato do processo criativo-colaborativo em vídeo-dança-instalação que se inicia em minha pesquisa.
Progenitors of Long-Duration Gamma-ray Bursts
Creators: name: Roy, Arpita
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We review the current scenario of long-duration Gamma-ray burst (LGRB) progenitors, and in addition, present models of massive stars for a mass range of $10\text{--}150 \, \mathrm{M}_\odot$ with $Δ\mathrm{M}=10 \, \mathrm{M}_\odot$ and rotation rate $v/v_{\rm{crit}}=0$ to $0.6$ with a velocity resolution $Δv/v_{\rm{crit}} =0.1$. We further discuss possible metallicity and rotation rate distribution from our models that might be preferable for the creation of successful LGRB candidates given the observed LGRB rates and their metallicity evolution. In the current understanding, LGRBs are associated with Type-Ic supernovae (SNe). To establish LGRB-SN correlation, we discuss three observational paths: (i) space-time coincidence, (ii) evidence from photometric light curves of LGRB afterglows and SN Type-Ic, (iii) spectroscopic study of both LGRB afterglow and SN. Superluminous SNe are also believed to have the same origin as LGRBs. Therefore, we discuss constraints on the progenitor parameters that can possibly dissociate these two events from a theoretical perspective. We further discuss the scenario of single star versus binary star as a more probable pathway to create LGRBs. Given the limited parameter space in the mass, mass ratio and separation between the two components in a binary, binary channel is less likely to create LGRBs to match the observed LGRB rate. Despite effectively-single massive stars are fewer in number compared to interacting binaries, their chemically homogeneous evolution (CHE) might be the major channel for LGRB production.
description: Invited article for the Special Issue "Gamma-Ray Burst Science in 2030", published in Galaxies
The discovery of two extremely low luminosity Milky Way globular clusters
Creators: name: Koposov, S.
name: de Jong, J. T. A.
name: Belokurov, V.
name: Rix, H. -W.
name: Zucker, D. B.
name: Evans, N. W.
name: Gilmore, G.
name: Irwin, M. J.
name: Bell, E. F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of two extremely low luminosity globular clusters in the Milky Way Halo. These objects were detected in the Sloan Digital Sky Survey Data Release 5 and confirmed with deeper imaging at the Calar Alto Observatory. The clusters, Koposov 1 and Koposov 2, are located at $\sim 40-50$ kpc and appear to have old stellar populations and luminosities of only $M_V \sim -1$ mag. Their observed sizes of $\sim 3$ pc are well within the expected tidal limit of $\sim$10 pc at that distance. Together with Palomar 1, AM 4 and Whiting 1, these new clusters are the lowest luminosity globulars orbiting the Milky Way, with Koposov 2 the most extreme. Koposov 1 appears to lie close to distant branch of the Sagittarius stream. The half-mass relaxation times of Koposov 1 and 2 are only $\sim 70$ and $\sim 55$ Myr respectively (2 orders of magnitude shorter than the age of the stellar populations), so it would seem that they have undergone drastic mass segregation. Since they do not appear to be very concentrated, their evaporation timescales may be as low as $\sim 0.1 t_{\rm Hubble}$. These discoveries show that the structural parameter space of globular clusters in the Milky Way halo is not yet fully explored. They also add, through their short remaining survival times, significant direct evidence for a once much larger population of globular clusters.
description: accepted for publication in ApJ, minor revisions
Once More About the "Forbidden" Domain Structure and the Isolated Point in K2Cd2xMn2(1-x)(SO4)3 Langbeinites
Creators: name: Vlokh, R.
name: Girnyk, I.
name: Vlokh, O. V.
name: Skab, I.
name: Say, A.
name: Uesu, Y.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The domain structure in K2Cd2xMn2(1-x)(SO4)3 (x=0.5, 0.7 and 0.9) langbeinite crystals is studied with the aid of optical polarization microscopy. It is shown that the domain walls in ferro-elastic langbeinites separate enantiomorphous orientation states. These orientation states appear in the phase with the symmetry 23 in connection with the hypothetic phase transition . In the phase with the symmetry 222, these domain walls are transformed to those separating ferroelastic domains with the opposite signs of enantiomorphism. It is revealed that one enantiomorphous domain can only transform to the other via a thick layer of the parent phase with symmetry. The results for the volume thermal expansion are presented. It is shown that the isolated point at the x,T-phase diagram of K2Cd2xMn2(1-x)(SO4)3 solid solutions corresponds to the concentration x=0.6.
description: 6 pages, 4 figures
Total mass biases in X-ray galaxy clusters
Creators: name: Piffaretti, Rocco
name: Valdarnini, Riccardo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The exploitation of clusters of galaxies as cosmological probes relies on accurate measurements of their total gravitating mass. X-ray observations provide a powerful means of probing the total mass distribution in galaxy clusters, but might be affected by observational biases and rely on simplistic assumptions originating from our limited understanding of the intracluster medium physics. This paper is aimed at elucidating the reliability of X-ray total mass estimates in clusters of galaxies by properly disentangling various biases of both observational and physical origin. We use N-body/SPH simulation of a large sample of ~100 galaxy clusters and investigate total mass biases by comparing the mass reconstructed adopting an observational-like approach with the true mass in the simulations. X-ray surface brightness and temperature profiles extracted from the simulations are fitted with different models and adopting different radial fitting ranges in order to investigate modeling and extrapolation biases. Different theoretical definitions of gas temperature are used to investigate the effect of spectroscopic temperatures and a power ratio analysis of the surface brightness maps allows us to assess the dependence of the mass bias on cluster dynamical state. Moreover, we perform a study on the reliability of hydrostatic and hydrodynamical equilibrium mass estimates using the full three-dimensional information in the simulation.[abridged]
description: 17 pages, 12 figures, accepted for publication in A&A
A Gribov equation for the photon Green's function
Creators: name: Odagiri, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a derivation of the Gribov equation for the gluon/photon Green's function D(q). Our derivation is based on the second derivative of the gauge-invariant quantity Tr ln D(q), which we interpret as the gauge-boson `self-loop'. By considering the higher-order corrections to this quantity, we are able to obtain a Gribov equation which sums the logarithmically enhanced corrections. By solving this equation, we obtain the non-perturbative running coupling in both QCD and QED. In the case of QCD, alpha_S has a singularity in the space-like region corresponding to super-criticality, which is argued to be resolved in Gribov's light-quark confinement scenario. For the QED coupling in the UV limit, we obtain a \propto Q^2 behaviour for space-like Q^2=-q^2. This implies the decoupling of the photon and an NJLVL-type effective theory in the UV limit.
description: 12 pages, 5 figures; version to be published in Eur. Phys. J. C
A wind-blown bubble in the Central Molecular Zone cloud G0.253+0.016
Creators: name: Henshaw, J. D.
name: Krumholz, M. R.
name: Butterfield, N. O.
name: Mackey, J.
name: Ginsburg, A.
name: Haworth, T. J.
name: Nogueras-Lara, F.
name: Barnes, A. T.
name: Longmore, S. N.
name: Bally, J.
name: Kruijssen, J. M. D.
name: Mills, E. A. C.
name: Beuther, H.
name: Walker, D. L.
name: Battersby, C.
name: Bulatek, A.
name: Henning, T.
name: Ott, J.
name: Soler, J. D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: G0.253+0.016, commonly referred to as "the Brick" and located within the Central Molecular Zone, is one of the densest ($\approx10^{3-4}$ cm$^{-3}$) molecular clouds in the Galaxy to lack signatures of widespread star formation. We set out to constrain the origins of an arc-shaped molecular line emission feature located within the cloud. We determine that the arc, centred on $\{l_{0},b_{0}\}=\{0.248^{\circ}, 0.18^{\circ}\}$, has a radius of $1.3$ pc and kinematics indicative of the presence of a shell expanding at $5.2^{+2.7}_{-1.9}$ km s$^{-1}$. Extended radio continuum emission fills the arc cavity and recombination line emission peaks at a similar velocity to the arc, implying that the molecular and ionised gas are physically related. The inferred Lyman continuum photon rate is $N_{\rm LyC}=10^{46.0}-10^{47.9}$ photons s$^{-1}$, consistent with a star of spectral type B1-O8.5, corresponding to a mass of $\approx12-20$ M$_{\odot}$. We explore two scenarios for the origin of the arc: i) a partial shell swept up by the wind of an interloper high-mass star; ii) a partial shell swept up by stellar feedback resulting from in-situ star formation. We favour the latter scenario, finding reasonable (factor of a few) agreement between its morphology, dynamics, and energetics and those predicted for an expanding bubble driven by the wind from a high-mass star. The immediate implication is that G0.253+0.016 may not be as quiescent as is commonly accepted. We speculate that the cloud may have produced a $\lesssim10^{3}$ M$_{\odot}$ star cluster $\gtrsim0.4$ Myr ago, and demonstrate that the high-extinction and stellar crowding observed towards G0.253+0.016 may help to obscure such a star cluster from detection.
description: 17 pages, 7 figures. Accepted for publication in MNRAS (October 15, 2021)
A 3-Stranded Quantum Algorithm for the Jones Polynomial
Creators: name: Kauffman, Louis H.
name: Lomonaco,, Samuel J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Let K be a 3-stranded knot (or link), and let L denote the number of crossings in K. Let $ε_{1}$ and $ε_{2}$ be two positive real numbers such that $ε_{2}$ is less than or equal to 1. In this paper, we create two algorithms for computing the value of the Jones polynomial of K at all points $t=exp(iϕ)$ of the unit circle in the complex plane such that the absolute value of $ϕ$ is less than or equal to $π/3$. The first algorithm, called the classical 3-stranded braid (3-SB) algorithm, is a classical deterministic algorithm that has time complexity O(L). The second, called the quantum 3-SB algorithm, is a quantum algorithm that computes an estimate of the Jones polynomial of K at $exp(iϕ))$ within a precision of $ε_{1}$ with a probability of success bounded below by $1-ε_{2}%. The execution time complexity of this algorithm is O(nL), where n is the ceiling function of (ln(4/ε_{2}))/(2(ε_{2})^2). The compilation time complexity, i.e., an asymptotic measure of the amount of time to assemble the hardware that executes the algorithm, is O(L).
description: 19 pages, 10 figures, to appear in Proc. SPIE, 6573-29, (2007)
Piezooptic Properties of beta-BaB2O4 and Li2B4O7 Crystals
Creators: name: Martynyuk-Lototska, I.
name: Mys, O.
name: Dyachok, Ya.
name: Dudok, T.
name: Adamiv, V.
name: Burak, Ya.
name: Vlokh, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Photoelastic coefficients of beta-BaB2O4 and Li2B4O7 crystals are calculated on the basis of piezooptic measurements performed with interferometric technique and the elastic compliance and stiffness data. Using the experimental results, the acoustooptic (AO) figure of merit (FM) has been estimated for the possible geometries of AO interaction. It is shown that the AO FM for the ABO and LTB crystals reach respectively the values M2=243.4*10-15s3/kg and M2=2.57*10-15s3/kg, if the interaction with the slowest ultrasonic waves (v=933.5m/s and v=3173m/s) is concerned. The directions of propagation and polarization of those acoustic waves are obtained on the basis of construction of indicative surfaces of the acoustic wave velocities.
description: 8 pages, 3 figures
Implications of CP-violating transitions in hot quark matter on heavy ion collisions
Creators: name: Warringa, Harmen J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Quantum Chromodynamics (QCD) predicts that topological charge changing transitions will take place in hot quark matter. Such transitions induce P- and CP-violating effects. We will show that in the presence of a magnetic field these transitions can separate quarks according to their electric charge along the direction of the magnetic field. This is the so-called Chiral Magnetic Effect. We will argue that it might be possible to observe the Chiral Magnetic Effect in heavy ion collisions.
description: 8 pages, 4 figures. Plenary talk at the 20th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM2008) held in Jaipur, India on February 4-10, 2008
Crystal Optical Properties of Inhomogeneous Plates and the Problems of Polarization Tomography of Photoelastic Materials
Creators: name: Kushnir, O.
name: Nek, P.
name: Vlokh, R.
name: Kukhtarev, N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Using the Jones matrix formalism, crystal optical properties of inhomogeneous material consisting of a pile of weakly birefringent plates are analysed in relation to the cell model adopted in polarization tomography of 3D dielectric tensor field in photoelastic media. It is shown that the material manifests in general an "apparent" optical gyration caused by different orientations of the plates. Relations between the polarimetric parameters and the dielectric tensor components are ascertained for the case of weak optical anisotropy.
description: 7 pages
Quantum Fields with Noncommutative Target Spaces
Creators: name: Balachandran, A. P.
name: Queiroz, A. R.
name: Marques, A. M.
name: Teotonio-Sobrinho, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Quantum field theories (QFT's) on noncommutative spacetimes are currently under intensive study. Usually such theories have world sheet noncommutativity. In the present work, instead, we study QFT's with commutative world sheet and noncommutative target space. Such noncommutativity can be interpreted in terms of twisted statistics and is related to earlier work of Oeckl [1], and others [2,3,4,5,6,7,8]. The twisted spectra of their free Hamiltonians has been found earlier by Carmona et al [9,10]. We review their derivation and then compute the partition function of one such typical theory. It leads to a deformed black body spectrum, which is analysed in detail. The difference between the usual and the deformed black body spectrum appears in the region of high frequencies. Therefore we expect that the deformed black body radiation may potentially be used to compute a GZK cut-off which will depend on the noncommutative parameter $θ$.
description: 20 pages, 5 figures; Abstract changed. Changes and corrections in the text. References added
Vinculin recruitment to α-catenin halts the differentiation and maturation of enterocyte progenitors to maintain homeostasis of the Drosophila intestine
Creators: name: Bohere, Jerome
name: Eldridge-Thomas, Buffy L
name: Kolahgar, Golnar
Publisher: name: Apollo - University of Cambridge Repository
Year: 2022
Subjects: Research Article
Developmental Biology
Stem Cells and Regenerative Medicine
vinculin
intestinal homeostasis
differentiation
stem cell
mechanotransduction
D. melanogaster

description: Peer reviewed: True
description: Mechanisms communicating changes in tissue stiffness and size are particularly relevant in the intestine because it is subject to constant mechanical stresses caused by peristalsis of its variable content. Using the Drosophila intestinal epithelium, we investigate the role of vinculin, one of the best characterised mechanoeffectors, which functions in both cadherin and integrin adhesion complexes. We discovered that vinculin regulates cell fate decisions, by preventing precocious activation and differentiation of intestinal progenitors into absorptive cells. It achieves this in concert with α-catenin at sites of cadherin adhesion, rather than as part of integrin function. Following asymmetric division of the stem cell into a stem cell and an enteroblast (EB), the two cells initially remain connected by adherens junctions, where vinculin is required, only on the EB side, to maintain the EB in a quiescent state and inhibit further divisions of the stem cell. By manipulating cell tension, we show that vinculin recruitment to adherens junction regulates EB activation and numbers. Consequently, removing vinculin results in an enlarged gut with improved resistance to starvation. Thus, mechanical regulation at the contact between stem cells and their progeny is used to control tissue cell number.
Lattice model for the Coulomb interacting chiral limit of the magic angle twisted bilayer graphene: symmetries, obstructions and excitations
Creators: name: Vafek, Oskar
name: Kang, Jian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We revisit the localized Wannier state description of the twisted bilayer graphene, focusing on the chiral limit. We provide a simple method for constructing such 2D exponentially localized -- yet valley polarized -- Wannier states, centered on the sites of the honeycomb lattice, paying particular attention to maintaining all the unobstructed symmetries. This includes the unitary particle-hole symmetry, and the combination of $C_2\mathcal{T}$ and the chiral particle-hole symmetry. The $C_2\mathcal{T}$ symmetry alone remains topologically obstructed and is not represented in a simple site-to-site fashion. We also analyze the gap and the dispersion of single particle and single hole excitations above a strong coupling ground state at integer fillings, which we find to be dominated by the on-site and the nearest neighbor terms of a triangular lattice hopping model, with a minimum at the center of the moire Brillouin zone. Finally, we use the insight gained from this real space description to understand the dependence of the gap and the effective mass on the range of the screened Coulomb interaction.
description: 19 pages; (14p main text + 1.2p references + 4p supplementary) 7 figures
A constructive mean field analysis of multi population neural networks with random synaptic weights and stochastic inputs
Creators: name: Faugeras, Olivier
name: Touboul, Jonathan
name: Cessac, Bruno
Publisher: name: arXiv
Year: 2008
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mathematical Physics (math-ph)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We deal with the problem of bridging the gap between two scales in neuronal modeling. At the first (microscopic) scale, neurons are considered individually and their behavior described by stochastic differential equations that govern the time variations of their membrane potentials. They are coupled by synaptic connections acting on their resulting activity, a nonlinear function of their membrane potential. At the second (mesoscopic) scale, interacting populations of neurons are described individually by similar equations. The equations describing the dynamical and the stationary mean field behaviors are considered as functional equations on a set of stochastic processes. Using this new point of view allows us to prove that these equations are well-posed on any finite time interval and to provide a constructive method for effectively computing their unique solution. This method is proved to converge to the unique solution and we characterize its complexity and convergence rate. We also provide partial results for the stationary problem on infinite time intervals. These results shed some new light on such neural mass models as the one of Jansen and Rit \cite{jansen-rit:95}: their dynamics appears as a coarse approximation of the much richer dynamics that emerges from our analysis. Our numerical experiments confirm that the framework we propose and the numerical methods we derive from it provide a new and powerful tool for the exploration of neural behaviors at different scales.
description: 55 pages, 4 figures, to appear in "Frontiers in Neuroscience"
Letter from Kathleen Raine to Robin Skelton, [March 02, 1955]
Creators: name: Raine, Kathleen, 1908-2003
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Editors
valueUri: http://id.worldcat.org/fast/902475
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Platonists
valueUri: http://id.worldcat.org/fast/1066881
subject: Periodicals--Publishing
valueUri: http://id.worldcat.org/fast/1058100
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Book industries and trade
valueUri: http://id.worldcat.org/fast/836171
subject: Critics
valueUri: http://id.worldcat.org/fast/883769
subject: Wiccans
valueUri: http://id.worldcat.org/fast/1765210
subject: Novelists, English
valueUri: http://id.worldcat.org/fast/1039718
subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Periodical editors
valueUri: http://id.worldcat.org/fast/1058064
subject: Neoplatonism
valueUri: http://id.worldcat.org/fast/1035884
subject: Raine, Kathleen, 1908-2003
valueUri: http://id.worldcat.org/fast/52672
subject: Skelton, Robin
valueUri: http://id.worldcat.org/fast/51853
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172
subject: English poetry--Manuscripts
valueUri: http://id.worldcat.org/fast/912320
subject: Scholars
valueUri: http://id.worldcat.org/fast/1106878
subject: Novelists
valueUri: http://id.worldcat.org/fast/1039684
subject: Philosophy
valueUri: http://id.worldcat.org/fast/1060777
subject: FOS: Philosophy, ethics and religion

description: Part of a collection of correspondence from Kathleen Raine to Robin Skelton. Skelton was a British poet, academic, anthologist, and practicing Wiccan. He taught at Manchester University before emigrating to Canada in 1963, where he taught creative writing at the University of Victoria and started the literary magazine The Malahat Review. Also included are some letters to Skelton’s wife Sylvia, and his daughters. Spanning close to forty-five years, the correspondence discusses poetry, writing, and philosophy; particularly Platonism and Neoplatonism. Raine often refers to the writings of William Blake and W. B. Yeats. Many letters also mention contemporary literary figures at the time including: Herbert Read, Peter Russell, Liam Miller, and Thurairajah Tambimuttu. In this letter, Raine discusses literary acquaintances, including Herbert Read.
On the viability of the evolution of the universe with Geometric Inflation
Creators: name: Jaime, Luisa G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We perform a general analysis of the cosmological viability of Geometric Inflation. We show that the evolution of the universe, from inflation to the present day, can be seen from the addition of an infinite tower of curvature invariants into the Hilbert-Einstein action. The main epochs of the Universe can be reproduced: Inflation, Big Bang Nucleosynthesis, and Late-time acceleration driven by the cosmological constant. The slow-roll condition is a robust prediction of the theory. Inflation possesses a graceful exit with enough number of $e-$folds between the limit imposed by the Planck density and the exit of the exponential expansion to solve the horizon problem and the absence of topological defects. We also provide some scenarios where the energy scale of the theory can be calibrated.
description: 17 pages, 4 figures. Accepted for publication in Physics of the Dark Universe (https://doi.org/10.1016/j.dark.2021.100887)
การใช้แผนปฏิบัติการเพื่อปรับคำสั่งเอสคิวแอล
Creators: name: ชาญชัย  ศุภอรรถกร
Publisher: name: มหาวิทยาลัยอุบลราชธานี
Year: 2014
Subjects: การปรับแต่งคำสั่งเอสคิวแอล, การเพิ่มประสิทธิภาพการสอบถามข้อมูล, แผนปฏิบัติการ

description: 1, 8, วารสารวิชาการและวิจัย มทร.พระนคร
Measurement of the relative Quantum Efficiency of Hamamatsu model R5912-20MOD photomultiplier tubes at liquid argon temperature
Creators: name: Zhao, Qin
name: Guan, Mengyun
name: Zhang, Peng
name: Yang, Changgen
name: Li, Jiajun
name: Wei, Yuting
name: Wang, Lei
name: Gan, Youyu
name: Xiong, Weixing
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The model R5912-20MOD photomultiplier tube(PMT) is made for cryogenic application by Hamamatsu. In this paper, we report on the measurement of relative quantum efficiency (QE) of this model PMT at liquid argon(LAr) temperature. Furthermore, a specially designed setup and relevant test method are introduced. The relative QE is measured in visible wavelengths with the PMT emerged in high purity nitrogen atmosphere. The results show that the change of QE at LAr temperature is within about 5% compared with room temperature around 420 nm. However, the QE increases about 10% in the shorter wavelength range and decreases significantly after 550 nm.
description: 10 pages, 6 figures
Investigation of abrasion of concrete containing pozzolan
Creators: name: Kakhunthod, Navin
name: Sahalaph Homwuttiwong
name: Maneerat Ongwandee
Publisher: name: Faculty of Engineering, Khon Kaen Univeristy
Year: 2012
Subjects: Concrete, Abrasion,Pozzolannic material, Fly ash,Palm oil fuel ash,Bagasse ash

description: 1, 39, KKU Engineering Journal
Outage Performance of $3$D Mobile UAV Caching for Hybrid Satellite-Terrestrial Networks
Creators: name: Sharma, Pankaj K.
name: Gupta, Deepika
name: Kim, Dong In
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, we consider a hybrid satellite-terrestrial network (HSTN) where a multiantenna satellite communicates with a ground user equipment (UE) with the help of multiple cache-enabled amplify-and-forward (AF) three-dimensional ($3$D) mobile unmanned aerial vehicle (UAV) relays. Herein, we employ the two fundamental most popular content (MPC) and uniform content (UC) caching schemes for two types of mobile UAV relays, namely fully $3$D and fixed height. Taking into account the multiantenna satellite links and the random $3$D distances between UAV relays and UE, we analyze the outage probability (OP) of considered system with MPC and UC caching schemes. We further carry out the corresponding asymptotic OP analysis to present the insights on achievable performance gains of two schemes for both types of $3$D mobile UAV relaying. Specifically, we show the following: (a) MPC caching dominates the UC and no caching schemes; (b) fully $3$D mobile UAV relaying outperforms its fixed height counterpart. We finally corroborate the theoretic analysis by simulations.
description: 17 pages, 3 figures, Submitted to IEEE for possible publication
Uvod u organizaciju računara
Creators: name: Hilčenko, Slavoljub
Publisher: name: Zenodo
Year: 2025

description: Priručnik "UVOD U ORGANIZACIJU RAČUNARA" izradila je studentkinja 1. godine smera Strukovni poslovni informatičar, Minela Ibrović iz Tutina, našeg isturenog odeljenja. Na sastanku održanom na Univerzitetu u Novom Sadu 2023. godine, upućena je sugestija svim nastavnicima i profesorima strukovnih škola i na Univerzitetu da u svom radu sa studentima koriste alate veštačke inteligencije (AL) kako u nastavi i na vežbama, tako i u oblikovanju nastavnih sadržaja i nastavnih materijala.U tom smislu, mentor je koristeći AL tehnologije koncipirao osnovni sadržaj, teme i pitanja iz ovog predmeta, nudeći ih svim studentima 1. godine da tokom zimskog semestra 2023/24. godine, kroz 15 nedelja na predavanjima i vežbama uz pomoć AL tehnologije, dopune, prošire, ilustruju i daju odgovore na postavljena pitanja. Sve ovo je tokom tog perioda zajednički analizirano i prodiskutovano.Motivacija za ovakav pristup za studente bila je u tome da svako kreira svoj priručnik iz kojeg će učiti za ispit, a takođe da odaberu najbolji među njima, koji će biti štampan kao priručnik narednoj generaciji. Naš izbor je pred vama!Studentkinja Minela Ibrović nije štedela ni vreme ni trud da najbolje oblikuje svoj priručnik i postane student koji već ima svoj prvi štampani priručnik.Priručnik, obimom od 534 stranica, prevazilazi svoju formu i postaje udžbenik, ali s obzirom na njene godine i iskustvo, ostavljen je prostor kako njoj, tako i budućim studentima korisnicima ovog priručnika, da ga dodatno oblikuju, dopune u skladu s promenama na ovom polju. Sam izvorni oblik i sadržaj priručnika nisu menjani te u najvećoj meri ima izgled i sadržaj kako ga je Minela zamislila.Tekstovi su predstavljeni u različitim bojama (crveno, zeleno, plavo, ljubičasto, narandžasto) radi preglednosti, značaja, ali pre svega da bi se uočilo koliko je truda uloženo, što se može videti po zelenoj boji koja odražava upravo to.Verujemo da je ovaj način rada bio podsticaj i motivacija za sve studente, što se može zaključiti po ozbiljnosti s kojom su prionuli na ovaj zadatak. Dodatni podsticaj bio je postati autorom priručnika već kao student.Napomena: Ovaj sadržaj priručnika je samo predlog AL i može se prilagoditi specifičnim zahtevima kursa ili kurikuluma za predmet "UVOD U ORGANIZACIJU RAČUNARA."
The Cosmological Slingshot Scenario: Myths and Facts
Creators: name: Germani, Cristiano
name: Grandi, Nicolas
name: Kehagias, Alex
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We generalize the Cosmological Slingshot Scenario for a Slingshot brane moving in a Klebanov-Strassler throat. We show that the horizon and isotropy problems of standard cosmology are avoided, while the flatness problem is acceptably alleviated. Regarding the primordial perturbations, we identify their vacuum state and elucidate the evolution from the quantum to the classical regimes. Also, we calculate their exact power spectrum showing its compatibility with current data. We discuss the bouncing solution from a four dimensional point of view. In this framework the radial and angular motion of the Slingshot brane are described by two scalar fields. We show that the bouncing solution for the scale factor in String frame is mapped into a monotonically increasing (in conformal time) solution in the Einstein frame. We finally discuss about the regularity of the geometry in Einstein frame.
description: 16 pages, 2 figs. Major clarifications and references added, version accepted in Gen. Rel. Grav. (2009)
Multiple Steady and Oscillatory Solutions in a Collapsible Channel Flow
Creators: name: Wang, Danyang
name: Luo, Xiaoyu
name: Stewart, Peter S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We study flow driven through a finite-length planar rigid channel by a fixed upstream flux, where a segment of one wall is replaced by a pre-stressed elastic beam subject to uniform external pressure. The steady and unsteady systems are solved using a finite element method. Previous studies have shown that the system can exhibit three steady states for some parameters (termed the upper, intermediate and lower steady branches, respectively). Of these, the intermediate branch is always unstable while the upper and lower steady branches can (independently) become unstable to self-excited oscillations. We show that for some parameter combinations the system is unstable to both upper and lower branch oscillations simultaneously. However, we show that these two instabilities eventually merge together for large enough Reynolds numbers, exhibiting a nonlinear limit cycle which retains characteristics of both the upper and lower branches of oscillations. Furthermore, we show that increasing the beam pre-tension suppresses the region of multiple steady states but preserves the onset of oscillations. Conversely, increasing the beam thickness (a proxy for increasing bending stiffness) suppresses both multiple steady states and the onset of oscillations.
description: 17 pages, 9 figures
Anomalous Hall effect in (In,Mn)Sb dilute magnetic semiconductor
Creators: name: Mihaly, G.
name: Csontos, M.
name: Bordacs, S.
name: Kezsmarki, I.
name: Wojtowicz, T.
name: Liu, X.
name: Janko, B.
name: Furdyna, J. K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: High magnetic field study of Hall resistivity in the ferromagnetic phase of (In,Mn)Sb allows one to separate its normal and anomalous components. We show that the anomalous Hall term is not proportional to the magnetization, and that it even changes sign as a function of magnetic field. We also show that the application of pressure modifies the scattering process, but does not influence the Hall effect. These observations suggest that the anomalous Hall effect in (In,Mn)Sb is an intrinsic property and support the application of the Berry phase theory for (III,Mn)V semiconductors. We propose a phenomenological description of the anomalous Hall conductivity, based on a field-dependent relative shift of the heavy- and light-hole valence bands and the split-off band.
Assessing the economic impact of tariffs: adaptations by multinationals and traders to mitigate tariffs
Creators: name: Contractor, Farok J.
Publisher: name: Emerald
Year: 2025
Subjects: Tarrifs
Job reduction through automation
Costs and benefits of tariffs
Effects of tariffs on international supply chains
What companies can do to mitigate tarrifs

description: Purpose
description: The purpose of this paper is (1) to inform academics and company strategists about the utility or dangers of tariffs and (2) to examine possible strategic adaptations by multinationals and traders to mitigate tariffs.
description: Design/methodology/approach
description: This paper is a comprehensive review of arguments pro and con tariffs. How traders and multinational companies can mitigate tariffs is a core section of the paper.
description: Findings
description: While enumerating the pros and cons of these tariffs, most apolitical observers conclude that, overall, their economic and political costs typically greatly exceed the benefits. Since the USA is, by far the biggest importer, its tariff policies can affect most other exporting nations. An Appendix examines the root causes of the threatened upsurge in US tariffs under the Trump administration, stemming from concerns about globalization’s impact on domestic US manufacturing. Increased US tariffs will likely spur retaliatory tariffs from trading partners, with a possibly grave impact on world trade.
description: Research limitations/implications
description: Each of the positive and negative effects of tariffs comprehensively covered in this review paper can be the subject of empirical investigations. Tariffs have multiple effects, on producers who depend on imported inputs; on consumers of the final product; on exporters whose shipments may diminish; on governments who may choose retaliatory tariffs; on the configuration of international supply chains; and on exchange rates. While economists have created stylized models to assess the overall impacts, there is no comprehensive conclusion except that past studies show net detrimental effects of tariffs.
description: Practical implications
description: This paper is designed to identify possible adaptations by multinationals and traders to mitigate tariffs such as marginal increases in inventories, diversification of suppliers by number and geography, passing through price increases depending on price elasticity of demand, deepening relationships with suppliers, nonmarket strategies and lobbying, investing in more automation, product and process innovation and a reduction in service or product varieties. None of these adaptations, however, are easy or costless.
Holographic quark gluon plasma with flavor
Creators: name: Kaminski, Matthias
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this work I explore theoretical and phenomenological implications of chemical potentials and charge densities inside a strongly coupled thermal plasma, using the gauge/gravity correspondence. Strong coupling effects discovered in this model theory are interpreted geometrically and may be taken as qualitative predictions for heavy ion collisions at RHIC and LHC. In particular I examine the thermodynamics, spectral functions, transport coefficients and the phase diagram of the strongly coupled plasma. For example stable mesons, which are the analogs of the QCD Rho-mesons, are found to survive beyond the deconfinement transition. This paper is based on partly unpublished work performed in the context of my PhD thesis. New results and ideas extending significantly beyond those published until now are stressed.
description: 45 figures, 166 pages
Prospects for Improving the Intrinsic and Extrinsic Properties of Magnesium Diboride Superconducting Strands
Creators: name: Collings, E. W.
name: Sumption, M. D.
name: Bhatia, M.
name: Susner, M. A.
name: Bohnenstiehl, S. D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The magnetic and transport properties of magnesium diboride films represent performance goals yet to be attained by powder-processed bulk samples and conductors. Such performance limits are still out of the reach of even the best magnesium diboride magnet wire. In discussing the present status and prospects for improving the performance of powder-based wire we focus attention on (1) the intrinsic (intragrain) superconducting properties of magnesium diboride, Hc2 and flux pinning, (2) factors that control the efficiency with which current is transported from grain-to-grain in the conductor, an extrinsic (intergrain) property. With regard to Item-(1), the role of dopants in Hc2 enhancement is discussed and examples presented. On the other hand their roles in increasing Jc, both via Hc2 enhancement as well as direct fluxoid/pining-center interaction, are discussed and a comprehensive survey of Hc2 dopants and flux-pinning additives is presented. Current transport through the powder-processed wire (an extrinsic property) is partially blocked by the inherent granularity of the material itself and the chemical or other properties of the intergrain surfaces. These and other such results indicate that in many cases less than 15% of the conductor's cross sectional area is able to carry transport current. It is pointed out that densification in association with the elimination of grain-boundary blocking phases would yield five-to ten-fold increases in Jc in relevant regimes, enabling the performance of magnesium diboride in selected applications to compete with that of Nb-Sn.
title: Litterae indulgentiarum; [1484]
title: (Fragment, linke und rechte Hälfte)
titleType: Subtitle
Creators: name: Bartholomaeus, de Camerino de Camerino
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2014

description: Bibliografischer Nachweis: R 599; VE15 B-20; Holter, Ablassbriefe 2; SI 1008; Sallander 2071; Hummel (Schlägl) 24; Ernst (Hannover) 17; Pr 2225; BMC II 459; BSB-Ink B-109; GW (Einbl) 408; GW 3433