cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
ATLAS silicon module assembly and qualification tests at IFIC Valencia
Creators: name: Bernabeu, J.
name: Civera, J. V.
name: Costa, M. J.
name: Escobar, C.
name: Fuster, J.
name: Garcia, C.
name: Garcia-Navarro, J. E.
name: Gonzalez, F.
name: Gonzalez-Sevilla, S.
name: Lacasta, C.
name: Llosa, G.
name: Marti-Garcia, S.
name: Minano, M.
name: Mitsou, V. A.
name: Modesto, P.
name: Nacher, J.
name: Rodriguez-Oliete, R.
name: Sanchez, F. J.
name: Sospedra, L.
name: Strachko, V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: ATLAS experiment, designed to probe the interactions of particles emerging out of proton proton collisions at energies of up to 14 TeV, will assume operation at the Large Hadron Collider (LHC) at CERN in 2007. This paper discusses the assembly and the quality control tests of forward detector modules for the ATLAS silicon microstrip detector assembled at the Instituto de Fisica Corpuscular (IFIC) in Valencia. The construction and testing procedures are outlined and the laboratory equipment is briefly described. Emphasis is given on the module quality achieved in terms of mechanical and electrical stability.
description: 23 pages, 38 EPS figures, uses JINST LaTeX class
Demonstration of Faceted Search on Scholarly Knowledge Graphs
Creators: name: Heidari, Golsa
name: Ramadan, Ahmad
name: Stocker, Markus
name: Auer, Sören
Publisher: name: arXiv
Year: 2021
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: Scientists always look for the most accurate and relevant answer to their queries on the scholarly literature. Traditional scholarly search systems list documents instead of providing direct answers to the search queries. As data in knowledge graphs are not acquainted semantically, they are not machine-readable. Therefore, a search on scholarly knowledge graphs ends up in a full-text search, not a search in the content of scholarly literature. In this demo, we present a faceted search system that retrieves data from a scholarly knowledge graph, which can be compared and filtered to better satisfy user information needs. Our practice's novelty is that we use dynamic facets, which means facets are not fixed and will change according to the content of a comparison.
description: 2 pages, 1 figure, WWW 2021 Demo. arXiv admin note: substantial text overlap with arXiv:2107.05447
Boundary value problems for Elliptic wedge operators: The first-order case
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2015
Subjects: math.AP
Primary: 58J32, Secondary: 58J05, 35J46, 35J56

description: © Springer International Publishing Switzerland 2015. This chapter is a description of some of the results obtained by the authors in connection with the problem in the title. These, discussed following a summary of background material concerning wedge differential operators, consist of the notion of trace bundle, an extension of the Douglis–Nirenberg calculus to handle spaces of anisotropic varying regularity and associated pseudodifferential operators, and boundary value problems proper, the latter in the first-order case. The concepts concerning the main results are illustrated with simple examples.
Geometric phase via adiabatic manipulations of the environment
Creators: name: Syzranov, S. V.
name: Makhlin, Yu.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that geometric phases may be generated in a quantum system subject to noise by adiabatic manipulations of the fluctuating fields, e.g., by variation of the system-environment coupling. For a two-state quantum system we express this phase in terms of the geometry of the path, traversed by the slowly varying direction and amplitude of the fluctuations. We discuss the origin of this phase and possibilities to separate it from the known environment-induced modification of the Berry phase.
Dark Energy at early times and ACT: a larger Hubble constant without late-time priors
Creators: name: Poulin, Vivian
name: Smith, Tristan L.
name: Bartlett, Alexa
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we fit two models of Early Dark Energy (EDE) (an increase in the expansion rate before recombination) to the combination of Atacama Cosmology Telescope (ACT) measurements of the Cosmic Microwave Background (CMB) with data from either the WMAP or the Planck satellite, along with measurements of the baryon acoustic oscillations and uncalibrated supernovae luminosity distance. We study a phenomenological axion-like potential ('axEDE') and a scalar field experiencing a first-order phase-transition ('NEDE'). We find that for both models the 'Planck-free' analysis yields non-zero EDE at > 2 sigma and an increased value for $H_0 \sim 70-74$ km/s/Mpc, compatible with local measurements, without the inclusion of any prior on $H_0$. On the other hand, the inclusion of Planck data restricts the EDE contribution to an upper-limit only at 95% C.L. For axEDE, the combination of Planck and ACT leads to constraints 30% weaker than with Planck alone, and there is no residual Hubble tension. On the other hand, NEDE is more strongly constrained in a Planck+ACT analysis, and the Hubble tension remains at $\sim 3σ$, illustrating the ability for CMB data to distinguish between EDE models. We explore the apparent inconsistency between the Planck and ACT data and find that it comes (mostly) from a slight tension between the temperature power spectrum at multipoles around $\sim 1000$ and $\sim 1500$. Finally, through a mock analysis of ACT data, we demonstrate that the preference for EDE is not driven by a lack of information at high-$\ell$ when removing Planck data, and that a LCDM fit to the fiducial EDE cosmology results in a significant bias on $\{H_0,ω_{\rm cdm}\}$. More accurate measurements of the TT power spectra above $\ell\sim 2500$ and EE between $\ell \sim 300-500$ will play a crucial role in differentiating EDE models.
description: 20 pages, 15 figures, comments welcome; v2: corrected minor typos, added references, updated results and discussion of NEDE, new appendices on ACT vs. ACT+WMAP residuals and the chi-squared per experiment; conclusions unchanged
Fragmentation Function in Non-Equilibrium QCD Using Closed-Time Path Integral Formalism
Creators: name: Nayak, Gouranga C
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this paper we implement Schwinger-Keldysh closed-time path integral formalism in non-equilibrium QCD to the definition of Collins-Soper fragmentation function. We consider a high p_T parton in QCD medium at initial time t_0 with arbitrary non-equilibrium (non-isotropic) distribution function f(\vec{p}) fragmenting to hadron. We formulate parton to hadron fragmentation function in non-equilibrium QCD in the light-cone quantization formalism. It may be possible to include final state interactions with the medium via modification of the Wilson lines in this definition of the non-equilibrium fragmentation function. This may be relevant to study hadron production from quark-gluon plasma at RHIC and LHC.
description: 15 pages latex, Accepted for Publication in European Physical Journal C
A study of the trace 39Ar content in argon from deep underground sources
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2015
Subjects: Underground argon
Ar-29
Dark matter instrumentation
Low-radioactivity technique
Low-background counting

description: © 2015 Elsevier B.V. All rights reserved. The discovery of argon from deep underground sources with significantly less 39Ar than atmospheric argon was an important step in the development of direct dark matter detection experiments using argon as the active target. We report on the design and operation of a low-background single-phase liquid argon detector that was built to study the 39Ar content of this underground argon. Underground argon from the Kinder Morgan CO2 plant in Cortez, Colorado was determined to have less than 0.65% of the 39Ar activity in atmospheric argon, or 6.6 mBq/kg specific 39Ar activity.
Cascade of Gregory-Laflamme Transitions and U(1) Breakdown in Super Yang-Mills
Creators: name: Hanada, Masanori
name: Nishioka, Tatsuma
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we consider black p-branes on square torus. We find an indication of a cascade of Gregory-Laflamme transitions between black p-brane and (p-1)-brane. Through AdS/CFT correspondence, these transitions are related to the breakdown of the U(1) symmetry in super Yang-Mills on torus. We argue a relationship between the cascade and recent Monte-Carlo data.
description: 15 pages, 3 figures, LaTeX, v2: comments and references added, v3: minor changes and a reference added
Learning Semantic Patterns for Question Generation
Creators: name: Rodrigues, Hugo Patinho
Publisher: name: Carnegie Mellon University
Year: 2023
Subjects: Computational Logic and Formal Languages

description:  Question Generation (QG) is the Natural Language Processing (NLP) task dedicated to the automatic generation of questions from raw text. It can be useful in many different scenarios, from educational settings, in which the generation of questions can eliminate a huge burden on professors and instructors in creating them to assess their students, to populating the knowledge base of a conversational agent. In this thesis we present a pattern-based system, GEN, that automatically performs the task of QG. Given an information source and a set of seeds constituted of question/answer/sentence triplets, GEN outputs a set of questions (and answers, if possible). Contrary to other similar systems, GEN is not built upon hand-crafted templates, and, instead of relying in patterns that only go to the lexical and syntactic level, it deeply explores the existence of semantic information in a flexible pattern matching process, allowing it to occur at different linguistic levels. In addition, instead of using a limited number of rules or models incorporated at design time, GEN is able to learn from questions corrected by the user, in order to perform better in future iterations.
 In this work, we have also made a contribution to QG automatic evaluation. Many authors rely on automatic metrics, instead of relying on manual evaluations, as their computation is mostly free. However, corpora generally used as reference is very incomplete, containing just a couple of hypotheses per source sentence. With that in mind, we contribute with the Monserrate corpus, containing 26 times more questions per reference sentence, on average, than any other available dataset. The implications of such a large size for a reference are also studied, and we concluded that Monserrate is “exhaustive” enough for QG evaluation. We benchmark GEN against current state of the art QG systems, and show that our approach is able to generate quality questions and surpass a neural network approach, given as input just 8 seeds. We evaluate the systems both with automatic metrics, and through human annotators. Finally, we employ GEN in two different scenarios. First, we show that it can be used as an authoring tool to help professors create questions for their courses, by presenting the best questions in the top of a ranked list. In this experiment, GEN learns new patterns and ranks the generated questions due to a simulated teacher feedback. To the best of our knowledge, GEN is the only QG system that can be easily adapted to this scenario, and benefits from not requiring a linguistic expert as user. Secondly, we apply GEN in a Question Answering (QA) setup, where it is used to create questions that attempt to improve the performance of an external system.
MILLIY BRENDNI SHAKLLANTIRISH
Creators: name: Kodirova, Xurshida
name: Eshmurodov, Baxtiyor
Publisher: name: Zenodo
Year: 2024

description: Ushbu maqolada xorij brendlarini o‘rgangan holda O‘zbekistondagi ishlab chiqarish va xizmat ko‘rsatish korxonalarining brendini yaratish  va rivojlantirish to‘g’risida ma’lumotlar keltirilgan.
Emergent Exoplanet Flux: Review of the Spitzer Results
Creators: name: Deming, Drake
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Observations using the Spitzer Space Telescope provided the first detections of photons from extrasolar planets. Spitzer observations are allowing us to infer the temperature structure, composition, and dynamics of exoplanet atmospheres. The Spitzer studies extend from many hot Jupiters, to the hot Neptune orbiting GJ436. Here I review the current status of Spitzer secondary eclipse observations, and summarize the results from the viewpoint of what is robust, what needs more work, and what the observations are telling us about the physical nature of exoplanet atmospheres.
description: 11 pages, 8 figures, to appear in Proceedings of IAU Symposium 253
Regularity for the near field parallel refractor and reflector problems
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2015
Subjects: math.AP

description: © 2014, Springer-Verlag Berlin Heidelberg. We prove local C1,α estimates of solutions to the parallel refractor and reflector problems under local assumptions on the target set Σ, and no assumptions are made on the smoothness of the densities.
Roles of intrinsic anisotropy and π-band pairbreaking effects on critical currents in tilted- c -axis Mg B2 films probed by magneto-optical and transport measurements
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2014
Subjects: cond-mat.supr-con

description: © 2014 American Physical Society. Investigations of MgB2 and Fe-based superconductors in recent years have revealed many unusual effects of multiband superconductivity, but manifestations of anisotropic multiband effects in the critical current density Jc have not been addressed experimentally, mostly because of the difficulties in measuring Jc along the c axis. To investigate the effect of very different intrinsic anisotropies of σ and π electron bands in MgB2 on current transport, we grew epitaxial films with a tilted c axis (θ ∼ 19.5°), which enabled us to measure the components of Jc along both the ab plane and the c axis using magneto-optical and transport techniques. These measurements were combined with scanning and transmission electron microscopy, which revealed terraced steps on the surface of the tilted-c-axis films. The measured field and temperature dependencies of the anisotropic Jc(H) show that Jc,L parallel to the terraced steps is higher than Jc,T perpendicular to the terraced steps, and Jc of thinner films (50 nm) obtained from transport experiments at 0.1 T reaches ∼10% of the depairing current density Jd in the ab plane, while magneto-optical imaging revealed much higher Jc at lower fields. To analyze the experimental data we developed a model of anisotropic vortex pinning which accounts for the observed behavior of Jc in the tilted-c-axis films and suggests that the apparent anisotropy of Jc is affected by current pairbreaking effects in the weaker π band. Our results indicate that the out-of-plane current transport mediated by the π band could set the ultimate limit of Jc in MgB2 polycrystals.
Measurement of double-polarization asymmetries in the quasielastic he → 3 (e →,e′d) process
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2014
Subjects: (Jefferson Lab Hall A Collaboration)

description: © 2014 American Physical Society. We present a precise measurement of double-polarization asymmetries in the He→3(e→,e′d) reaction. This particular process is a uniquely sensitive probe of hadron dynamics in He3 and the structure of the underlying electromagnetic currents. The measurements have been performed in and around quasielastic kinematics at Q2=0.25(GeV/c)2 for missing momenta up to 270MeV/c. The asymmetries are in fair agreement with the state-of-the-art calculations in terms of their functional dependencies on pm and ω, but are systematically offset. Beyond the region of the quasielastic peak, the discrepancies become even more pronounced. Thus, our measurements have been able to reveal deficiencies in the most sophisticated calculations of the three-body nuclear system, and indicate that further refinement in the treatment of their two-and/or three-body dynamics is required.
Construction of a two unique product semigroup defined by permutation relations of quaternion type
Creators: name: Cedo, Ferran
name: Jespers, Eric
name: Klein, Georg
Publisher: name: arXiv
Year: 2014
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: Primary: 16S15, 16S36, 20M05, Secondary: 20M25, 16N20

description: For a regular representation $H \subseteq \text{Sym}_n$ of the generalized quaternion group of order $n=4k$, with $k\geq 2$, the monoid $S_n(H)$ presented with generators $a_1,a_2,\dots ,a_n$ and with relations $a_1a_2\cdots a_n=a_{σ(1)}a_{σ(2)}\cdots a_{σ(n)}$, for all $σ\in H$, is investigated. It is shown that $S_n(H)$ has the two unique product property. As a consequence, for any field $K$, the monoid algebra $K[S_n(H)]$ is a domain with trivial units which is semiprimitive.
description: 11 pages
J/ψ polarization in p+p collisions at s=200 GeV in STAR
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2014
Subjects: Charmonia
Polarization
Spin alignment
STAR
RHIC

description: © 2014 The Authors. We report on a polarization measurement of inclusive J/ψ mesons in the di-electron decay channel at mid-rapidity at 2 < pT < 6 GeV/c in p + p collisions at √s = 200 GeV. Data were taken with the STAR detector at RHIC. The J/ψ polarization measurement should help to distinguish between the different models of the J/ψ production mechanism since they predict different pT dependences of the J/ψ polarization. In this analysis, J/ψ polarization is studied in the helicity frame. The polarization parameter λθ measured at RHIC becomes smaller towards high pT , indicating more longitudinal J/ψ polarization as pT increases. The result is compared with predictions of presently available models.
Molecules with ALMA at Planet-forming Scales (MAPS) II: CLEAN Strategies for Synthesizing Images of Molecular Line Emission in Protoplanetary Disks
Creators: name: Czekala, Ian
name: Loomis, Ryan A.
name: Teague, Richard
name: Booth, Alice S.
name: Huang, Jane
name: Cataldi, Gianni
name: Ilee, John D.
name: Law, Charles J.
name: Walsh, Catherine
name: Bosman, Arthur D.
name: Guzmán, Viviana V.
name: Gal, Romane Le
name: Öberg, Karin I.
name: Yamato, Yoshihide
name: Aikawa, Yuri
name: Andrews, Sean M.
name: Bae, Jaehan
name: Bergin, Edwin A.
name: Bergner, Jennifer B.
name: Cleeves, L. Ilsedore
name: Kurtovic, Nicolas T.
name: Ménard, François
name: Nomura, Hideko
name: Pérez, Laura M.
name: Qi, Chunhua
name: Schwarz, Kamber R.
name: Tsukagoshi, Takashi
name: Waggoner, Abygail R.
name: Wilner, David J.
name: Zhang, Ke
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Molecules with ALMA at Planet-forming Scales large program (MAPS LP) surveyed the chemical structures of five protoplanetary disks across more than 40 different spectral lines at high angular resolution (0.15" and 0.30" beams for Bands 6 and 3, respectively) and sensitivity (spanning 0.3 - 1.3 mJy/beam and 0.4 - 1.9 mJy/beam for Bands 6 and 3, respectively). In this article, we describe our multi-stage workflow -- built around the CASA tclean image deconvolution procedure -- that we used to generate the core data product of the MAPS LP: the position-position-velocity image cubes for each spectral line. Owing to the expansive nature of the survey, we encountered a range of imaging challenges; some are familiar to the sub-mm protoplanetary disk community, like the benefits of using an accurate CLEAN mask, and others less well-known, like the incorrect default flux scaling of the CLEAN residual map first described in Jorsater & van Moorsel 1995 (the "JvM effect"). We distill lessons learned into recommended workflows for synthesizing image cubes of molecular emission. In particular, we describe how to produce image cubes with accurate fluxes via the "JvM correction," a procedure that is generally applicable to any image synthesized via CLEAN deconvolution but is especially critical for low S/N emission. We further explain how we used visibility tapering to promote a common, fiducial beam size and contextualize the interpretation of signal to noise ratio when detecting molecular emission from protoplanetary disks. This paper is part of the MAPS special issue of the Astrophysical Journal Supplement.
description: ApJS accepted. Part of the MAPS ALMA large program series: http://www.alma-maps.info/. Updated bibliography with MAPS LP arXiv references
Diagnostic tools for 3D unstructured oceanographic data
Creators: name: Cotter, C. J.
name: Gorman, G. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: Most ocean models in current use are built upon structured meshes. It follows that most existing tools for extracting diagnostic quantities (volume and surface integrals, for example) from ocean model output are constructed using techniques and software tools which assume structured meshes. The greater complexity inherent in unstructured meshes (especially fully unstructured grids which are unstructured in the vertical as well as the horizontal direction) has left some oceanographers, accustomed to traditional methods, unclear on how to calculate diagnostics on these meshes. In this paper we show that tools for extracting diagnostic data from the new generation of unstructured ocean models can be constructed with relative ease using open source software. Higher level languages such as Python, in conjunction with packages such as NumPy, SciPy, VTK and MayaVi, provide many of the high-level primitives needed to perform 3D visualisation and evaluate diagnostic quantities, e.g. density fluxes. We demonstrate this in the particular case of calculating flux of vector fields through isosurfaces, using flow data obtained from the unstructured mesh finite element ocean code ICOM, however this tool can be applied to model output from any unstructured grid ocean code.
The Unforgettable Gertrude Bing
Creators: name: Forster, Kurt W.
Publisher: name: La Rivista di Engramma
Year: 2020
Subjects: Gertrud Bing
Warburg Institute
Marie Louise von Franz

description: In this text, Kurt W. Forster recalls first meeting Gertrud Bing as a young student from Zurich when he visited the Warburg Institute in London. His personal recollection of this important encounter is also accompanied by his recollection of another - with Marie-Louise von Franz, a pupil and collaborator of C. G. Jung, a woman whose personal profile is comparable to that of Bing.
Measurement of "pretzelosity" asymmetry of charged pion production in semi-inclusive deep inelastic scattering on a polarized He 3 target
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2014
Subjects: nucl-ex

description: © 2014 American Physical Society. An experiment to measure single-spin asymmetries of semi-inclusive production of charged pions in deep-inelastic scattering on a transversely polarized He3 target was performed at Jefferson Laboratory in the kinematic region of 0.16
On the magnetic fields generated by experimental dynamos
Creators: name: Petrelis, F.
name: Mordant, N.
name: Fauve, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: We review the results obtained by three successful fluid dynamo experiments and discuss what has been learnt from them about the effect of turbulence on the dynamo threshold and saturation. We then discuss several questions that are still open and propose experiments that could be performed to answer some of them.
description: 40 pages, 13 figures
Finitely presented algebras defined by permutation relations of dihedral type
Creators: name: Cedo, Ferran
name: Jespers, Eric
name: Klein, Georg
Publisher: name: arXiv
Year: 2014
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: Primary: 16S15, 16S36, 20M05, Secondary: 20M25, 20M35, 16N20

description: The class of finitely presented algebras over a field $K$ with a set of generators $a_{1},\ldots , a_{n}$ and defined by homogeneous relations of the form $a_{1}a_{2}\cdots a_{n} =a_{σ(1)} a_{σ(2)} \cdots a_{σ(n)}$, where $σ$ runs through a subset $H$ of the symmetric group $\text{Sym}_{n}$ of degree $n$, is investigated. Groups $H$ in which the cyclic group $\langle (1,2, \ldots ,n) \rangle$ is a normal subgroup of index $2$ are considered. Certain representations by permutations of the dihedral and semidihedral groups belong to this class of groups. A normal form for the elements of the underlying monoid $S_n(H)$ with the same presentation as the algebra is obtained. Properties of the algebra are derived, it follows that it is an automaton algebra in the sense of Ufnarovski\uı. The universal group $G_n$ of $S_n(H)$ is a unique product group, and it is the central localization of a cancellative subsemigroup of $S_n(H)$. This, together with previously obtained results on such semigroups and algebras, is used to show that the algebra $K[S_n(H)]$ is semiprimitive.
description: 26 pages
The Dark Top
Creators: name: Poland, David
name: Thaler, Jesse
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a class of composite Higgs models in which the particle that regulates the top quark contribution to the Higgs potential is also a weakly-interacting dark matter candidate. This color-neutral "dark top" is related to the standard model top quark through a large global symmetry. Because the same couplings that control the Higgs potential also determine various dark matter cross sections, the dark top scenario is quite predictive once the dark top mass and various quantum numbers are specified. We construct two concrete examples of dark top models with plausible UV completions and study their dark matter properties and LHC signatures.
description: 32 pages, 8 figures; v2: to match JHEP version
Flavors and Phases in Unparticle Physics
Creators: name: Chen, Chuan-Hung
name: Geng, Chao-Qiang
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Inspired by the recent Georgi's unparticle proposal, we study the flavor structures of the standard model (SM) particles when they couple to unparticles. At a very high energy scale, we introduce $\BZ$ charges for the SM particles, which are universal for each generation and allow $\BZ$ fields to distinguish flavor generations. At the $Λ_{\UP}$ scale, $\BZ$ operators and charges are matched onto unparticle operators and charges, respectively. In this scenario, we find that tree flavor changing neutral currents (FCNCs) can be induced by the rediagonalizations of the SM fermions. As an illustration, we employ the Fritzsch ansatz to the SM fermion mass matrices and we find that the FCNC effects could be simplified to be associated with the mass ratios denoted by $\sqrt{m_{i}m_{j}/m^2_{3}}$, where $m_3$ is the mass of the heaviest particle in each type of fermion generations and $i, j$ are the flavor indices. In addition, we show that there is no new CP violating phase beside the unique one in the CKM matrix. We use $\bar B_{q}\to \ell^{+} \ell^{-}$ as examples to display the new FCNC effects. In particular, we demonstrate that the direct CP asymmetries in the decays can be $O(10%)$ due to the peculiar CP conserving phase in the unparticle propagator.
description: 1+14 pages, 2 figures, version to appear in Phys. Lett. B
Massive Protocluster of a Periodic Maser Source G188.95+0.89
Creators: name: Mutie, M. M.
name: Chibueze, J. O.
name: Bouchefry, K. El
name: MacLeod, G. C.
name: Morgan, J.
name: Baki, P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the results of ongoing monitoring of the 6.7 GHz CH$_3$OH masers associated with G188.95+0.89. In these observations five features are periodically varying and at least two exhibit evidence of velocity drifts. It is not clear the cause of these velocity drifts. The spectra have varied significantly since detection in 1991. The 11.45 km s$^1$ feature has decreased exponentially from 2003. Complementary ALMA 1.3 mm continuum and line observational results are also presented. Eight continuum cores (MM1 - MM8) were detected in G188.95+0.89. We derived the masses of the detected cores. G188.95+0.89 MM2 was resolved into 2 continuum cores (separated by 0.1 arcsec) in ALMA band 7 observations. Also CH$_3$OH (4$_{(2,2)}$-3$_{(1,2)})$ thermal emission associated with MM2 is double peaked. We propose the presence of multiple (at least binary) young stellar objects in MM2. SiO emission exhibit a bow-shock morphology in MM2 while strong emission of $^{12}$CO at the east and west of MM2 suggest the presence of an east-west bipolar outflow.
description: 6 pages, 11 figures
Spatial variation in temperature and density in the IC 63 PDR from $\rm H_{2}$ Spectroscopy
Creators: name: Soam, Archana
name: Andersson, B-G
name: Karoly, Janik
name: DeWitt, Curtis
name: Richter, Matthew
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have measured the gas temperature in the IC 63 photodissociation region (PDR) using the S(1) and S(5) pure rotation lines of molecular hydrogen with SOFIA/EXES. We divide the PDR into three regions for analysis based on the illumination from $γ$ Cas: "sunny," "ridge" and "shady." Constructing rotation diagrams for the different regions, we obtain temperatures of T$_{ex}$=$562^{+52}_{-43}$ K towards the "ridge" and T$_{ex}$=$495^{+28}_{-25}$ K in the "shady" side. The H$_2$ emission was not detected on the "sunny" side of the ridge, likely due to the photo-dissociation of H$_2$ in this gas. Our temperature values are lower than the value of T$_{ex}$=685$\pm$68 K using the S(1), S(3), and S(5) pure rotation lines, derived by Thi et al. (2009) using lower spatial-resolution ISO-SWS data at a different location of the IC 63 PDR. This difference indicates that the PDR is inhomogeneous and illustrates the need for high-resolution mapping of such regions to fully understand their physics. The detection of a temperature gradient correlated with the extinction into the cloud, points to the ability of using H$_2$ pure rotational line spectroscopy to map the gas temperature on small scales. We used a PDR model to estimate the FUV radiation and corresponding gas densities in IC 63. Our results shows the capability of SOFIA/EXES to resolve and provide detailed information on the temperature in such regions.
description: 10 pages, 4 figures
Generalization of the event-based Carnevale-Hines integration scheme for integrate-and-fire models
Creators: name: van Elburg, Ronald A. J.
name: van Ooyen, Arjen
Publisher: name: arXiv
Year: 2008
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: An event-based integration scheme for an integrate-and-fire neuron model with exponentially decaying excitatory synaptic currents and double exponential inhibitory synaptic currents has recently been introduced by Carnevale and Hines. This integration scheme imposes non-physiological constraints on the time constants of the synaptic currents it attempts to model which hamper the general applicability. This paper addresses this problem in two ways. First, we provide physical arguments to show why these constraints on the time constants can be relaxed. Second, we give a formal proof showing which constraints can be abolished. This proof rests on a generalization of the Carnevale-Hines lemma, which is a new tool for comparing double exponentials as they naturally occur in many cascaded decay systems including receptor-neurotransmitter dissociation followed by channel closing. We show that this lemma can be generalized and subsequently used for lifting most of the original constraints on the time constants. Thus we show that the Carnevale-Hines integration scheme for the integrate-and-fire model can be employed for simulating a much wider range of neuron and synapse type combinations than is apparent from the original treatment.
description: 11 pages with 2 figures included in main text
Group algebras and semigroup algebras defined by permutation relations of fixed length
Creators: name: Cedo, Ferran
name: Jespers, Eric
name: Klein, Georg
Publisher: name: arXiv
Year: 2014
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: Primary 16S15, 16S34, 16S36, 20M05, Secondary 20M25, 16N20

description: Let $H$ be a subgroup of $\text{Sym}_n$, the symmetric group of degree $n$. For a fixed integer $l \geq 2$, the group $G$ presented with generators $x_1, x_2, \ldots ,x_n$ and with relations $x_{i_1}x_{i_2}\cdots x_{i_l} =x_{σ(i_1)} x_{σ(i_2)} \cdots x_{σ(i_l)}$, where $σ$ runs through $H$, is considered. It is shown that $G$ has a free subgroup of finite index. For a field $K$, properties of the algebra $K[G]$ are derived. In particular, the Jacobson radical $\mathcal{J}(K[G])$ is always nilpotent, and in many cases the algebra $K[G]$ is semiprimitive. Results on the growth and the Gelfand-Kirillov dimension of $K[G]$ are given. Further properties of the semigroup $S$ and the semigroup algebra $K[S]$ with the same presentation are obtained, in case $S$ is cancellative. The Jacobson radical is nilpotent in this case as well, and sufficient conditions for the algebra to be semiprimitive are given.
description: 6 pages
Meshfree finite differences for vector Poisson and pressure Poisson equations with electric boundary conditions
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2015
Subjects: math.NA
physics.comp-ph
physics.flu-dyn
65M06, 65N06, 76M20, 35Q35

description: © Springer International Publishing Switzerland 2015. We demonstrate how meshfree finite difference methods can be applied to solve vector Poisson problems with electric boundary conditions. In these, the tangential velocity and the incompressibility of the vector field are prescribed at the boundary. Even on irregular domains with only convex corners, canonical nodalbased finite elements may converge to the wrong solution due to a version of the Babuška paradox. In turn, straightforward meshfree finite differences converge to the true solution, and even high-order accuracy can be achieved in a simple fashion. The methodology is then extended to a specific pressure Poisson equation reformulation of the Navier-Stokes equations that possesses the same type of boundary conditions. The resulting numerical approach is second order accurate and allows for a simple switching between an explicit and implicit treatment of the viscosity terms.
ЭКОЛОГИЧЕСКАЯ ПОЛИТИКА УЗБЕКИСТАНА
Creators: name: Алтинбоева, Мадина
Publisher: name: Zenodo
Year: 2024

description: Узбекистан сталкивается с рядом экологических проблем, включая загрязнение воздуха и воды, опустынивание и изменение климата. Правительство приняло ряд мер для решения этих проблем.
VLBI observations of seven BL Lac objects from RGB sample
Creators: name: Wu, Zhongzu
name: Jiang, D. R.
name: Gu, Minfeng
name: Liu, Yi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present EVN observations of seven BL Lac objects selected from the RGB sample. To investigate the intrinsic radiation property of BL Lac objects, we estimated the Doppler factor with the VLA or MERLIN core and the total 408 MHz luminosity for a sample of 170 BL Lac objects. The intrinsic (comoving) synchrotron peak frequency was then calculated by using the estimated Doppler factor. Assuming a Lorentz factor of 5, the viewing angle of jets was constrained. The high-resolution VLBI images of seven sources all show a core-jet structure. We estimated the proper motions of three sources with the VLBI archive data, and find that the apparent speed increases with the distance of components to the core for all of them. In our BL Lacs sample, the Doppler factor of LBLs is systematically larger than that of IBLs and HBLs. We find a significant anti-correlation between the total 408 MHz luminosity and the intrinsic synchrotron peak frequency. However, the scatter is much larger than for the blazar sequence. Moreover, we find a significant positive correlation between the viewing angle and the intrinsic synchrotron peak frequency. The BL Lac objects show a continuous distribution on the viewing angle. While LBLs have a smaller viewing angle than that of IBLs and HBLs, IBLs are comparable to HBLs. We conclude that the intrinsic synchrotron peak frequency is not only related to the intrinsic radio power (though with a large scatter), but also to the viewing angle for the present sample.
description: 22 pages,15figures, published by A&A
A data acquisition setup for data driven acoustic design
Creators: name: Rust, Romana
name: Xydis, Achilleas
name: Heutschi, Kurt
name: Perraudin, Nathanaël
name: Casas, Gonzalo
name: Du, Chaoyu
name: Strauss, Jürgen
name: Eggenschwiler, Kurt
name: Perez-Cruz, Fernando
name: Gramazio, Fabio
name: Kohler, Matthias
Publisher: name: arXiv
Year: 2021
Subjects: subject: Sound (cs.SD)
subject: Machine Learning (cs.LG)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, we present a novel interdisciplinary approach to study the relationship between diffusive surface structures and their acoustic performance. Using computational design, surface structures are iteratively generated and 3D printed at 1:10 model scale. They originate from different fabrication typologies and are designed to have acoustic diffusion and absorption effects. An automated robotic process measures the impulse responses of these surfaces by positioning a microphone and a speaker at multiple locations. The collected data serves two purposes: first, as an exploratory catalogue of different spatio-temporal-acoustic scenarios and second, as data set for predicting the acoustic response of digitally designed surface geometries using machine learning. In this paper, we present the automated data acquisition setup, the data processing and the computational generation of diffusive surface structures. We describe first results of comparative studies of measured surface panels and conclude with steps of future research.
การควบคุมและการตรวจสอบคุณภาพการผลิตชิ้นส่วนยานยนต์ของฝ่ายประกันคุณภาพ  โรงงานผู้รับจ้างผลิต
Creators: name: ยุทธ  ไกยวรรณ์
Publisher: name: มหาวิทยาลัยราชภัฏเพชรบุรี
Year: 2007
Subjects: การตรวจสอบ, การควบคุมคุณภาพ, ชื้นส่วนยานยนต์, โรงงานผู้รับจ้างผลิต

description: 1, 1, วารสารวิชาการและวิจัย มทร.พระนคร
Single spin asymmetries in charged kaon production from semi-inclusive deep inelastic scattering on a transversely polarized He 3 target
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2014
Subjects: nucl-ex

description: © 2014 American Physical Society. We report the first measurement of target single spin asymmetries of charged kaons produced in semi-inclusive deep inelastic scattering of electrons off a transversely polarized He3 target. Both the Collins and Sivers moments, which are related to the nucleon transversity and Sivers distributions, respectively, are extracted over the kinematic range of 0.1
การพัฒนาอิฐคอนกรีตน้ำหนักเบาที่มีเถ้าปาล์มน้ำมันเป็นส่วนผสม
Creators: name: พัชราวรรณ เก๊อะเจริญ
Publisher: name: มหาวิทยาลัยราชภัฏภูเก็ต
Year: 2007
Subjects: เถ้าปาล์มน้ำมัน, คอนกรีตมวลเบา, อิฐคอนกรีต

description: 1, 1, วารสารวิชาการและวิจัย มทร.พระนคร
Citizen Science Motivations as Discovered with CosmoQuest
Creators: name: Gugliucci, Nicole
name: Bracey, Georgia
name: Gay, Pamela
Publisher: name: Figshare
Year: 2019
Subjects: Education

description: CosmoQuest is a citizen science portal that has launched several projects that allow users to participate in mapping and discovery missions throughout the solar system. We are particularly interested in how citizen scientists move through the site and interact with the various tasks. We have piloted a survey asking citizen scientists for their motivations for using CosmoQuest and link that with their site behaviors. This is part of a larger project using online and real-life interactions to study citizen scientist behaviors, motivations, and learning with a goal of building a better community with researchers, volunteers, educators, and developers. Such research is important to understanding how to engage new and returning citizen scientists across a wide spectrum of projects.
ITS2 sequencing reads of participants from the GNHS study
Creators: name: Ju-Sheng Zheng
Publisher: name: CNGB
Year: 2022
Subjects: Raw sequence reads
Environment
Medical

description: Our study was based on the Guangzhou Nutrition and Health Study (GNHS). Stool samples were collected during the on-site visit of the participants at Sun Yat-sen University. All samples were manually stirred, separated into tubes and stored at -80℃ within four hours.
Left-right spin asymmetry in N↑ →hX
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2014
Subjects: hep-ph

description: © 2014 American Physical Society. We consider the inclusive production of hadrons in lepton-nucleon scattering. For a transversely polarized nucleon this reaction shows a left-right azimuthal asymmetry, which we compute in twist-3 collinear factorization at leading order in perturbation theory. All nonperturbative parton correlators of the calculation are fixed through information from other hard processes. Our results for the left-right asymmetry agree in sign with recent data for charged pion production from the HERMES Collaboration and from Jefferson Lab. However, the magnitude of the computed asymmetries tends to be larger than the data. Potential reasons for this outcome are identified. We also give predictions for future experiments and highlight in particular the unique opportunities at an electron ion collider.
title: NCAR/EOL/ISF Dropsonde NetCDF Data Files
Creators: name: Vömel, Holger
name: Suhr, Isabel
name: Granger, Gary
Publisher: name: UCAR/NCAR - Earth Observing Laboratory
Year: 2020

description: An explanation of the conventions and variables for the netCDF data file format used by NCAR/EOL/ISF for dropsonde sounding data.
Independent measurement of the neutrino mixing angle θ13 via neutron capture on hydrogen at Daya Bay
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2014
Subjects: hep-ex
physics.ins-det

description: © 2014 American Physical Society. A new measurement of the θ13 mixing angle has been obtained at the Daya Bay Reactor Neutrino Experiment via the detection of inverse beta decays tagged by neutron capture on hydrogen. The antineutrino events for hydrogen capture are distinct from those for gadolinium capture with largely different systematic uncertainties, allowing a determination independent of the gadolinium-capture result and an improvement on the precision of the θ13 measurement. With a 217-day antineutrino data set obtained with six antineutrino detectors and from six 2.9GWth reactors, the rate deficit observed at the far hall is interpreted as sin22θ13=0.083±0.018 in the three-flavor oscillation model. When combined with the gadolinium-capture result from Daya Bay, we obtain sin22θ13=0.089±0.008 as the final result for the six-antineutrino-detector configuration of the Daya Bay experiment.
The Riesz energy of the $N$-th roots of unity: an asymptotic expansion for large $N$
Creators: name: Brauchart, J. S.
name: Hardin, D. P.
name: Saff, E. B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We derive the complete asymptotic expansion in terms of powers of $N$ for the Riesz $s$-energy of $N$ equally spaced points on the unit circle as $N\to \infty$. For $s\ge -2$, such points form optimal energy $N$-point configurations with respect to the Riesz potential $1/r^{s}$, $s\neq0$, where $r$ is the Euclidean distance between points. By analytic continuation we deduce the expansion for all complex values of $s$. The Riemann zeta function plays an essential role in this asymptotic expansion.
description: Added reference to paper by Cohn and Kumar which shows optimality of roots of unity for -2
Quantum state truncation using an optical parametric amplifier and a beamsplitter
Creators: name: Mattos, E. P.
name: Vidiella-Barranco, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a scheme of quantum state truncation in the Fock basis (quantum scissors), based on the combined action of a nondegenerate optical parametric amplifier and a beamsplitter. Differently from previously proposed linear-optics-based quantum scissors devices, which depend on reliable Fock states sources, our scheme requires only readily available Gaussian states, such as coherent states inputs (vacuum state included). A truncated state is generated after performing photodetections in the global state. We find that, depending on which output ports each of the two photodetectors is positioned, different types of truncated states may be produced: i) states having a maximum Fock number of $N$, or ii) states having a minimum Fock number $N$. In order to illustrate our method, we discuss an example having as input states a coherent state in the beamsplitter and vacuum states in the amplifier, and show that the resulting truncated states display nonclassical properties, such as sub-Poissonian statistics and squeezing. We quantify the nonclassicality degree of the generated states using the Wigner-Yanase skew information measure. For complementarity, we discuss the efficiency of the protocol, e.g., generation probability as well as the effects of imperfections such as the detector's quantum efficiency and dark counts rate.
description: 19 pages, 14 figures
New exact solutions of relativistic hydrodynamics
Creators: name: Csorgo, T.
name: Nagy, M. I.
name: Csanad, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A new class of simple and exact solutions of relativistic hydrodynamics is presented, and the consequences are explored in data analysis. The effects of longitudinal work and acceleration are taken into account in an advanced estimate of the initial energy density and the life-time of the reaction.
description: 4 pages, 4 figures, talk given by T. Csorgo at Quark Matter 2008, Jaipur, India, February 2008, to appear in J. Phys. G
การพัฒนาผลิตภัณฑ์ขนมอบจากแป้งกล้วย
Creators: name: จุฑา พีรพัชระ
Publisher: name: มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร
Year: 2007
Subjects: บรรจุภัณฑ์, ขนมอบจากแป้งกล้วย

description: 1, 1, วารสารวิชาการและวิจัย มทร.พระนคร
การพัฒนาบรรจุภัณฑ์เพื่อสิ่งแวดล้อมจากเส้นใยกล้วยสำหรับบรรจุผลิตภัณฑ์อาหารสำเร็จรูป
Creators: name: บุษรา  สร้อยระย้า
Publisher: name: มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร
Year: 2013
Subjects: บรรจุภัณฑ์เพื่อสิ่งแวดล้อม, เส้นใยกล้วย, บรรจุผลิตภัณฑ์อาหารสำเร็จรูป

description: 1, 7, วารสารวิชาการและวิจัย มทร.พระนคร