cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spherically symmetric configuration in $f(Q)$ gravity
Creators: name: Lin, Rui-Hui
name: Zhai, Xiang-Hua
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: General relativity can be formulated equivalently with a non-Riemannian geometry that associates with an affine connection of nonzero nonmetricity $Q$ but vanishing curvature $R$ and torsion $T$. Modification based on this description of gravity generates the $f(Q)$ gravity. In this work we explore the application of $f(Q)$ gravity to the spherically symmetric configurations. We discuss the gauge fixing and connections in this setting. We demonstrate the effects of $f(Q)$ by considering the external and internal solutions of compact stars. The external background solutions for any regular form of $f(Q)$ coincide with the corresponding solutions in general relativity, i.e., the Schwarzschild-de Sitter solution and the Reissner-Nordström-de Sitter solution with an electromagnetic field. For internal structure, with a simple model $f(Q)=Q+αQ^2$ and a polytropic equation of state, we find that a negative modification ($α<0$) provides support to more stellar masses while a positive one ($α>0$) reduces the amount of matter of the star.
description: 21 pages, 3 figures, typos corrected, matching the published version
Broadening the Higgs Boson with Right-Handed Neutrinos and a Higher Dimension Operator at the Electroweak Scale
Creators: name: Graesser, Michael L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The existence of certain TeV suppressed higher-dimension operators may open up new decay channels for the Higgs boson to decay into lighter right-handed neutrinos. These channels may dominate over all other channels if the Higgs boson is light. For a Higgs boson mass larger than $2 m_W$ the new decays are subdominant yet still of interest. The right-handed neutrinos have macroscopic decay lengths and decay mostly into final states containing leptons and quarks. A distinguishing collider signature of this scenario is a pair of displaced vertices violating lepton number. A general operator analysis is performed using the minimal flavor violation hypothesis to illustrate that these novel decay processes can occur while remaining consistent with experimental constraints on lepton number violating processes. In this context the question of whether these new decay modes dominate is found to depend crucially on the approximate flavor symmetries of the right-handed neutrinos.
description: 17+1 pages. Corrected a small error and updated references
title: Knowledge of modality by imagining
Creators: name: Strohminger, Margot
Publisher: name: University of St Andrews
publisherIdentifier: https://ror.org/02wn5qz54
publisherIdentifierScheme: ROR
Year: 2014

description: Assertions about metaphysical modality (hereafter modality) play central roles in philosophical theorizing. For example, when philosophers propose hypothetical counterexamples, they often are making a claim to the effect that some state of affairs is possible. Getting the epistemology of modality right is thus important. Debates have been preoccupied with assessing whether imaginability—or conceivability, insofar as it’s different—is a guide to possibility, or whether it is rather intuitions of possibility—and modal intuitions more generally—that are evidence for possibility (modal) claims. The dissertation argues that the imagination plays a subtler role than the first view recognizes, and a more central one than the second view does. In particular, it defends an epistemology of metaphysical modality on which someone can acquire modal knowledge in virtue of having performed certain complex imaginative exercises.
Coulomb blockade of anyons
Creators: name: Averin, Dmitri V.
name: Nesteroff, James A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Coulomb interaction turns anyonic quasiparticles of a primary quantum Hall liquid with filling factor $ν=1/(2m+1)$ into hard-core anyons. We have developed a model of coherent transport of such quasiparticles in systems of multiple antidots by extending the Wigner-Jordan description of 1D abelian anyons to tunneling problems. We show that the anyonic exchange statistics manifests itself in tunneling conductance even in the {\em absence} of quasiparticle exchanges. In particular, it can be seen as a non-vanishing resonant peak associated with quasiparticle tunneling through a line of three antidots.
description: Published version, 4 pages including 3 figures
Measuring the impact of a new snow model using surface energy budget process relationships
Creators: name: Day, Jonathan
name: Arduini, Gabriele
name: Magnusson, Linus
name: Sandu, Irina
name: Beljaars, Anton
name: Balsamo, Gianpaolo
name: Rodwell, Mark
name: Richardson, David
Publisher: name: Zenodo
Year: 2021

description: Presentation at the November 2020 around-the-clock International Verification Methods Workshop Online (2020-IVMW-O) 
Vernetzungstreffen Ausbildung der VDB-Kommission für berufliche Qualifikation
Creators: name: Klein, Johannes
Publisher: name: o-bib. Das offene Bibliotheksjournal / Herausgeber VDB
Year: 2022

description: o-bib. Das offene Bibliotheksjournal / Herausgeber VDB, Bd. 9 Nr. 1 (2022)
A Tip of the Red Giant Branch Distance of $22.1 \pm 1.2$ Mpc to the Dark Matter Deficient Galaxy NGC1052-DF2 from 40 Orbits of Hubble Space Telescope Imaging
Creators: name: Shen, Zili
name: Danieli, Shany
name: van Dokkum, Pieter
name: Abraham, Roberto
name: Brodie, Jean P.
name: Conroy, Charlie
name: Dolphin, Andrew E.
name: Romanowsky, Aaron J.
name: Kruijssen, J. M. Diederik
name: Chowdhury, Dhruba Dutta
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The large and diffuse galaxies NGC1052-DF2 and NGC1052-DF4 have been found to have very low dark matter content and a population of luminous globular clusters. Accurate distance measurements are key to interpreting these observations. Recently, the distance to NGC1052-DF4 was found to be $20.0\pm 1.6$ Mpc by identifying the tip of the red giant branch (TRGB) in 12 orbits of Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS) imaging. Here we present 40 orbits of HST ACS data for NGC1052-DF2 and use these data to measure its TRGB. The TRGB is readily apparent in the color-magnitude diagram. Using a forward model that incorporates photometric uncertainties, we find a TRGB magnitude of $m_{\rm F814W, TRGB} = 27.67 \pm 0.10$ mag. The inferred distance is $D_{\rm TRGB} = 22.1 \pm 1.2$ Mpc, consistent with the previous surface brightness fluctuation distances to the bright elliptical galaxy NGC1052. The new HST distance rules out the idea that some of NGC1052-DF2's unusual properties can be explained if it were at $\sim 13$ Mpc; instead, it implies that the galaxy's globular clusters are even more luminous than had been derived using the previous distance of 20 Mpc. The distance from NGC1052-DF2 to NGC1052-DF4 is well-determined at $2.1\pm 0.5$ Mpc, significantly larger than the virial diameter of NGC1052. We discuss the implications for formation scenarios of the galaxies and for the external field effect, which has been invoked to explain the intrinsic dynamics of these objects in the context of modified Newtonian dynamics.
description: Accepted for publication in ApJ Letters
Axion Production in Pulsar Magnetosphere Gaps
Creators: name: Prabhu, Anirudh
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Pulsar magnetospheres admit non-stationary vacuum gaps that are characterized by non-vanishing ${\bf{E}} \cdot {\bf{B}}$. The vacuum gaps play an important role in plasma production and electromagnetic wave emission. We show that these gaps generate axions whose energy is set by the gap oscillation frequency. The density of axions produced in a gap can be several orders of magnitude greater than the ambient dark matter density. In the strong pulsar magnetic field, a fraction of these axions may convert to photons, giving rise to broadband radio signals. We show that dedicated observations of nearby pulsars with radio telescopes (FAST) and interferometers (SKA) can probe axion-photon couplings that are a few orders of magnitude lower than current astrophysical bounds.
description: 7 pages, 3 figures
Evidence for a planetary companion around a nearby young star
Creators: name: Setiawan, J.
name: Weise, P.
name: Henning, Th.
name: Launhardt, R.
name: Müller, A.
name: Rodmann, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report evidence for a planetary companion around the nearby young star HD 70573. The star is a G type dwarf located at a distance of 46 pc with age estimation between 20 and 300 Myrs. We carried out spectroscopic observations of this star with FEROS at the 2.2 m MPG/ESO telescope at La Silla. Our spectroscopic analysis yields a spectral type of G1-1.5V and an age of about 100 Myrs. Variations in stellar radial velocity of HD 70573 have been monitored since December 2003 until January 2007. The velocity accuracy of FEROS within this period is about 10 m/s. HD 70573 shows a radial velocity variation with a period of 852 +/- 12 days and a semi-amplitude of 149 +/- 6 m/s. The period of this variation is significantly longer than its rotational period, which is 3.3 days. Based on the analysis of the Ca II K emission line, Halpha and Teff variation as stellar activity indicators as well as the lack of a correlation between the bisector velocity span and the radial velocity, we can exclude the rotational modulation and non-radial pulsations as the source of the long-period radial velocity variation. Thus, the presence of a low-mass companion around the star provides the best explanation for the observed radial velocity variation. Assuming a primary mass m1=1.0 +/- 0.1 Msun for the host star, we calculated a minimum mass of the companion m2sini of 6.1 Mjup, which lies in the planetary mass regime, and an orbital semi-major axis of 1.76 AU. The orbit of the planet has an eccentricity of e=0.4. The planet discovery around the young star HD 70573 gives an important input for the study of debris disks around young stars and their relation to the presence of planets.
description: 11 pages, 4 figures, to be published in ApJL
Beyond ANN: Exploiting Structural Knowledge for Efficient Place Recognition
Creators: name: Schubert, Stefan
name: Neubert, Peer
name: Protzel, Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Visual place recognition is the task of recognizing same places of query images in a set of database images, despite potential condition changes due to time of day, weather or seasons. It is important for loop closure detection in SLAM and candidate selection for global localization. Many approaches in the literature perform computationally inefficient full image comparisons between queries and all database images. There is still a lack of suited methods for efficient place recognition that allow a fast, sparse comparison of only the most promising image pairs without any loss in performance. While this is partially given by ANN-based methods, they trade speed for precision and additional memory consumption, and many cannot find arbitrary numbers of matching database images in case of loops in the database. In this paper, we propose a novel fast sequence-based method for efficient place recognition that can be applied online. It uses relocalization to recover from sequence losses, and exploits usually available but often unused intra-database similarities for a potential detection of all matching database images for each query in case of loops or stops in the database. We performed extensive experimental evaluations over five datasets and 21 sequence combinations, and show that our method outperforms two state-of-the-art approaches and even full image comparisons in many cases, while providing a good tradeoff between performance and percentage of evaluated image pairs. Source code for Matlab will be provided with publication of this paper.
description: Accepted for publication at International Conference on Robotics and Automation (ICRA) 2021. This is the submitted version
Atmospheric response to Arctic sea ice decline in the CNRM model: initial results from PAMIP experiments
Creators: name: Msadek Rym
name: Chripko Svenya
name: Sanchez-Gomez Emilia
name: Terray Laurent
name: Moine Marie-Pierre
Publisher: name: Zenodo
Year: 2021

description: Oral presentation at the 2019 PAMIP workshop at Devon, UK. This international workshop was aimed at sharing initial results from the Polar Amplification Model Intercomparison Project (PAMIP) to improve our understanding of the physical processes that drive polar amplification and its global climate impacts.
Atmospheric response to Arctic sea ice decline: results from PAMIP experiments
Creators: name: Msadek Rym
name: Chripko Svenya
name: Sanchez-Gomez Emilia
name: Terray Laurent
Publisher: name: Zenodo
Year: 2021
Subjects: Arctic sea ice
Northern Hemisphere atmospheric circulation
2 degree warming

description: We analyze the Northern Hemisphere atmospheric response to Arctic sea ice decline in the CNRM-CM6 model (130km resolution, 91 vertical levels) using atmosphere-only experiments that follow the PAMIP protocol described in Smith et al. (2019). The high-top atmospheric component of CNRM-CM6 is forced by the same pattern of SST but different idealized patterns of sea ice that correspond to i) pre-industrial conditions (PI), ii) present day conditions (PD), and iii) future conditions (FUT) associated with a 2C warming with respect to i). Each experiment is run for 14 months starting in April, using at least 100 members. We focus on the cold season response (October to March) and describe the atmospheric response for different sea ice forcings applied either in to whole Arctic or to specific regions of the Arctic.
Motion-induced radiation due to an atom in the presence of a graphene plane
Creators: name: Fosco, César D.
name: Lombardo, Fernando C.
name: Mazzitelli, Francisco D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the motion-induced radiation due to the non-relativistic motion of an atom, coupled to the vacuum electromagnetic field by an electric dipole term, in the presence of a static graphene plate. After computing the probability of emission for an accelerated atom in empty space, we evaluate the corrections due to the presence of the plate. We show that the effect of the plate is to increase the probability of emission when the atom is near the plate and oscillates along a direction perpendicular to it. On the contrary, for parallel oscillations, there is a suppression. We also evaluate the quantum friction on an atom moving at constant velocity parallel to the plate. We show that there is a threshold for quantum friction: friction occurs only when the velocity of the atom is larger than the Fermi velocity of the electrons in graphene.
description: 28 pages, 5 figures
Quantum electromagnetic X-waves
Creators: name: Ciattoni, Alessandro
name: Conti, Claudio
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: General Physics (physics.gen-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that two distinct quantum states of the electromagnetic field can be associated to a classical vector X wave or a propagation-invariant solution of Maxwell equations. The difference between the two states is of pure quantum mechanical origin since they are internally entangled and disentangled, respectively and can be generated by different linear or nonlinear processes. Detection and generation of Schrödinger-cat states comprising two entangled X-waves and their possible applications are discussed.
description: 4 pages
Rapid Recombination by Cadmium Vacancies in CdTe
Creators: name: Kavanagh, Seán R.
name: Walsh, Aron
name: Scanlon, David O.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: CdTe is a key thin-film photovoltaic technology. Non-radiative electron-hole recombination reduces the solar conversion efficiency from an ideal value of 32% to a current champion performance of 22%. The cadmium vacancy (V_Cd) is a prominent acceptor species in p-type CdTe; however, debate continues regarding its structural and electronic behavior. Using ab initio defect techniques, we calculate a negative-U double-acceptor level for V_Cd, while reproducing the V_Cd^-1 hole-polaron, reconciling theoretical predictions with experimental observations. We find the cadmium vacancy facilitates rapid charge-carrier recombination, reducing maximum power-conversion efficiency by over 5% for untreated CdTe -- a consequence of tellurium dimerization, metastable structural arrangements, and anharmonic potential energy surfaces for carrier capture.
How to project a bipartite network?
Creators: name: Zhou, Tao
name: Ren, Jie
name: Medo, Matus
name: Zhang, Yi-Cheng
Publisher: name: arXiv
Year: 2007
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: The one-mode projecting is extensively used to compress the bipartite networks. Since the one-mode projection is always less informative than the bipartite representation, a proper weighting method is required to better retain the original information. In this article, inspired by the network-based resource-allocation dynamics, we raise a weighting method, which can be directly applied in extracting the hidden information of networks, with remarkably better performance than the widely used global ranking method as well as collaborative filtering. This work not only provides a creditable method in compressing bipartite networks, but also highlights a possible way for the better solution of a long-standing challenge in modern information science: How to do personal recommendation?
description: 7 pages, 4 figures
Neutron-neutron scattering length from the reaction gamma d --> pi^+ nn employing chiral perturbation theory
Creators: name: Lensky, V.
name: Baru, V.
name: Epelbaum, E.
name: Hanhart, C.
name: Haidenbauer, J.
name: Kudryavtsev, A.
name: Meißner, Ulf-G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We discuss the possibility to extract the neutron-neutron scattering length a_{nn} from experimental spectra on the reaction gamma d --> pi^+ nn. The transition operator is calculated to high accuracy from chiral perturbation theory. We argue that for properly chosen kinematics, the theoretical uncertainty of the method can be as low as 0.1 fm.
description: 14 pages, 8 figures
The 3.3 $μ$m PAH emission band of the Red Rectangle
Creators: name: Song, In-Ok
name: McCombie, J.
name: Kerr, T. H.
name: Sarre, P. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A new analysis of long-slit CGS4 (UKIRT) spectra of the 3.3 $μ$m feature of the Red Rectangle and its evolution with offset along the NW whisker of the nebula is presented. The results support a proposed two-component interpretation for the 3.3 $μ$m feature with peak wavelengths near 3.28 $μ$m and 3.30 $μ$m. Both components exhibit a small shift to shorter wavelength with increasing offset from the central star which, by comparison with laboratory studies, is consistent with a decrease in temperature of the carriers with distance from HD 44179. The two-component approach is also applied to 3.3 $μ$m data for the Red Rectangle, Orion Bar D2 and Orion Bar H2S1 from ISO SWS studies.
description: 8 pages, 12 figures, MNRAS accepted
Entwicklungstendenzen der französischen Arbeiterhistoriographie
Creators: name: Unfried, Berthold
name: Blum, Françoise
Publisher: name: Moving the Social
Year: 2014

description: This is the contribution "Entwicklungstendenzen der französischen Arbeiterhistoriographie" of MTS 14 (1993).
description: Moving the Social, Vol 14 (1993): Forschungen zur Arbeiterschaft und Arbeiterbewegung in Frankreich
Multiple Unfoldings of Orbifold Singularities: Engineering Geometric Analogies to Unification
Creators: name: Bourjaily, Jacob L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Katz and Vafa showed how charged matter can arise geometrically by the deformation of ADE-type orbifold singularities in type IIa, M-theory, and F-theory compactifications. In this paper we use those same basic ingredients, used there to geometrically engineer specific matter representations, here to deform the compactification manifold itself in a way which naturally compliments many features of unified model building. We realize this idea explicitly by deforming a manifold engineered to give rise to an $SU_5$ grand unified model into a one giving rise to the Standard Model. In this framework, the relative local positions of the singularities giving rise to Standard Model fields are specified in terms of the values of a small number of complex structure moduli which deform the original manifold, greatly reducing the arbitrariness of their relative positions.
description: 4 pages, 2 figures.
Die Perspektiven einer Geschichte der Genese: Das Beispiel der Arbeitslosigkeit
Creators: name: Zimmermann, Bénédicte
Publisher: name: Moving the Social
Year: 2014

description: This is the contribution "Die Perspektiven einer Geschichte der Genese: Das Beispiel der Arbeitslosigkeit" of MTS 14 (1993).
description: Moving the Social, Vol 14 (1993): Forschungen zur Arbeiterschaft und Arbeiterbewegung in Frankreich
โมเดลสมการโครงสร้างปัจจัยด้านการรับรู้ที่มีผลต่อพฤติกรรม การใช้ระบบบริหารจัดการคิวอาร์โค้ดของเจ้าหน้าที่ โรงพยาบาลเอกชนแห่งหนึ่งในเขตธนบุรี
Creators: name: อธิชัย ชื่นอารมย์
Publisher: name: สำนักหอสมุด มหาวิทยาลัยรังสิต
Year: 2563
Subjects: การรับรู้ความง่ายในการใช้งาน
การรับรู้ประโยชน์ในการใช้งาน
ความตั้งใจใช้ระบบ

description: วารสารรังสิตสารสนเทศ, 26, 1, 6-21
Nematicity Liquid in a Trimerized-Kagome Antiferromagnet
Creators: name: Tanaka, Ichiro
name: Tsunetsugu, Hirokazu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We theoretically study low-temperature properties of the antiferromagnetic Heisenberg model with half-integer spin $S$ on the Kagome lattice with large trimerization. We have derived a low-energy effective model for general $S$ in terms of spin and nematicity operators in triangular units, and studied their low-temperature correlations for S=3/2 by classical Monte Carlo simulations. The previous study for the S=1/2 case [M. Ferrero et al., Phys. Rev. B 68, 214431 (2003)] reported a spin liquid state at low temperatures driven by a glassy behavior of isolated dimers and trimers of nematicities. The results for S=3/2 show that nematicity dimers and trimers are connected by weak links to form a defective planar network. At very low temperatures, nematicities show glassy slow dynamics, and cluster spins continue to fluctuate in a nonperiodically frozen background of nematicities. The characteristic time of glassy dynamics scales with temperature following a power law.
description: 5 pages, 6 figures
Zwischen Tradition und Traditionsbildung: Die CSU auf dem Weg zur Hegemonialpartei 1945 bis 1976
Creators: name: Schlemmer, Thomas
Publisher: name: Moving the Social
Year: 2015

description: This is the contribution "Zwischen Tradition und Traditionsbildung: Die CSU auf dem Weg zur Hegemonialpartei 1945 bis 1976" of MTS 24 (2000).
description: Moving the Social, Vol 24 (2000): Forschungen und Forschungsberichte
Energy-preserving fully-discrete schemes for nonlinear stochastic wave equations with multiplicative noise
Creators: name: Hong, Jialin
name: Hou, Baohui
name: Sun, Liying
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In this paper, we focus on constructing numerical schemes preserving the averaged energy evolution law for nonlinear stochastic wave equations driven by multiplicative noise. We first apply the compact finite difference method and the interior penalty discontinuous Galerkin finite element method to discretize space variable and present two semi-discrete schemes, respectively. Then we make use of the discrete gradient method and the Padé approximation to propose efficient fully-discrete schemes. These semi-discrete and fully-discrete schemes are proved to preserve the discrete averaged energy evolution law. In particular, we also prove that the proposed fully-discrete schemes exactly inherit the averaged energy evolution law almost surely if the considered model is driven by additive noise. Numerical experiments are given to confirm theoretical findings.
Caffeoylquinic acids protect against alcoholic liver injury and rare C10 acetylenic acids from Erigeron breviscapus
Creators: name: Hou, Xuefen
name: Yu, Tongtong
name: Han, Shuang
name: Chen, Xin
name: Wang, Kai
name: Gao, Pinyi
name: Li, Lingzhi
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Pharmacology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified

description: Three new compounds (1–2, 4) along with ten known ones (3, 5–13), were isolated from the whole plant of Erigeron breviscapus. Compounds 1 and 2, two novel C10 acetylenic acids and compound 4, a jasmone glucoside were elucidated by the detailed analysis of 1D and 2D NMR, HRESIMS spectra, and experimental and calculated electronic circular dichroism (ECD). Compounds 1–3 represent the first example of acetylenic acids incorporating C10 skeleton from E. breviscapus. In addition, the antioxidant effects of all compounds were evaluated by ferric reducing power, 2,2′-Azinobis-(3-ethylbenzthiazoline-6-sulphonate acid) (ABTS) and 2.2-Diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assays. Our results indicated the significant antioxidant activity of caffeoylquinic acids. Additionally, compounds 10–11 and 13 played protective role on alcoholic liver injury cells in a dose-dependent manner.
Projektbericht: Meinungsumfragen und Parteiengeschichte
Creators: name: Friedemann, Peter
Publisher: name: Moving the Social
Year: 2015

description: This is the contribution "Projektbericht: Meinungsumfragen und Parteiengeschichte" of MTS 24 (2000).
description: Moving the Social, Vol 24 (2000): Forschungen und Forschungsberichte
Elemental abundances of Galactic bulge planetary nebulae from optical recombination lines
Creators: name: Wang, W.
name: Liu, X. -W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (abridged) Deep long-slit optical spectrophotometric observations are presented for 25 Galactic bulge planetary nebulae (GBPNe) and 6 Galactic disk planetary nebulae (GDPNe). The spectra, combined with archival ultraviolet spectra obtained with the International Ultraviolet Explorer (IUE) and infrared spectra obtained with the Infrared Space Observatory (ISO), have been used to carry out a detailed plasma diagnostic and element abundance analysis utilizing both collisional excited lines (CELs) and optical recombination lines (ORLs). Comparisons of plasma diagnostic and abundance analysis results obtained from CELs and from ORLs reproduce many of the patterns previously found for GDPNe. In particular we show that the large discrepancies between electron temperatures (Te's) derived from CELs and from ORLs appear to be mainly caused by abnormally low values yielded by recombination lines and/or continua. Similarly, the large discrepancies between heavy element abundances deduced from ORLs and from CELs are largely caused by abnormally high values obtained from ORLs, up to tens of solar in extreme cases. It appears that whatever mechanisms are causing the ubiquitous dichotomy between CELs and ORLs, their main effects are to enhance the emission of ORLs, but hardly affect that of CELs. It seems that heavy element abundances deduced from ORLs may not reflect the bulk composition of the nebula. Rather, our analysis suggests that ORLs of heavy element ions mainly originate from a previously unseen component of plasma of Te's of just a few hundred Kelvin, which is too cool to excite any optical and UV CELs.
description: 35 pages, 27 figures and 16 tables, accepted for publication in MNRAS
การพยากรณ์การเลือกกลุ่มคณะวิชาในการศึกษาต่อในระดับปริญญาตรี ของมหาวิทยาลัยรังสิต โดยใช้เทคนิคการทำเหมืองข้อมูล
Creators: name: ฐิตินันท์ อนุสรณ์
Publisher: name: สำนักหอสมุด มหาวิทยาลัยรังสิต
Year: 2563
Subjects: ต้นไม้การตัดสินใจ
ไนอีฟเบย์
การวิเคราะห์การถดถอยทางโลจิสติก
เหมืองข้อมูล

description: วารสารรังสิตสารสนเทศ, 26, 1, 22-45
Study of flow behaviour in a three products hydrocyclone screen: numerical simulation and experimental validation
Creators: name: Wang, Chuanzhen
name: Chen, Jianzhong
name: Shen, Lijuan
name: Ge, Linhan
Publisher: name: Faculty of Geoengineering, Mining and Geology, Wrocław University of Technology, Wrocław
Year: 2019
Subjects: three products hydrocyclone screen; flow behaviour; Computational Fluid Dynamics; particle image velocimetry; water split

description: Physicochemical Problems of Mineral Processing; ISSN 2084-4735
ปัจจัยที่มีอิทธิพลต่อการยอมรับนวัตกรรม M-Payment ของกลุ่มผู้ใช้งานภายในกรุงเทพมหานคร
Creators: name: กรวิศว์ ชัชวาลธนทรัพย์
Publisher: name: สำนักหอสมุด มหาวิทยาลัยรังสิต
Year: 2563
Subjects: ระบบชำระเงินผ่านโทรศัพท์มือถือ
ปัจจัยที่มีอิทธิพลต่อการยอมรับ

description: วารสารรังสิตสารสนเทศ, 26, 1, 46-72
Qubit-photon bound states in topological waveguides with long-range hoppings
Creators: name: Vega, Carlos
name: Bello, Miguel
name: Porras, Diego
name: González-Tudela, Alejandro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum emitters interacting with photonic band-gap materials lead to the appearance of qubit-photon bound states that mediate decoherence-free, tunable emitter-emitter interactions. Recently, it has been shown that when these band-gaps have a topological origin, like in the photonic SSH model, these qubit-photon bound states feature chiral shapes and certain robustness to disorder. In this work, we consider a more general situation where the emitters interact with an extended SSH photonic model with longer range hoppings that displays a richer phase diagram than its nearest-neighbour counterpart, e.g., phases with larger winding numbers. In particular, we first study the features of the qubit-photon bound states when the emitters couple to the bulk modes in the different phases, discern its connection with the topological invariant, and show how to further tune their shape through the use of giant atoms, i.e., non-local couplings. Then, we consider the coupling of emitters to the edge modes appearing in the different topological phases. Here, we show that giant atoms dynamics can distinguish between all different topological phases, as compared to the case with local couplings. Finally, we provide a possible experimental implementation of the model based on periodic modulations of circuit QED systems. Our work enriches the understanding of the interplay between topological photonics and quantum optics.
description: 18 pages, 19 figures. Improved discussion in Appendix B. Code is available at: https://github.com/Carlos-Vega-97/Extended_SSH
Studies of the role of mesenchymal cells in the regulation of hemopoiesis
Creators: name: Gaboury, Louis A.
Publisher: name: University of British Columbia
Year: 2010

description: Hemopoiesis is thought to be regulated in part by specific, but as yet undefined, interactions between primitive hemopoietic cells and fixed, non-hemopoietic marrow elements collectively referred to as the stroma. Recently, a marrow culture system has been described that allows the maintenance of primitive human hemopoietic progenitor cells for many weeks in the absence of exogenously added hemopoietic growth factors. The formation of a heterogeneous adherent layer in which many stromal elements are found appears to be important to the maintenance of hemopoiesis in this system. As part of the overall goal of delineating the cellular and molecular interactions involved, my first objective was to develop an experimental system for assessing the hemopoiesis-sustaining function of the adherent layer of long-term human marrow cultures. This required the identification of a suitable procedure for separating the hemopoietic and non-hemopoietic regulatory components so that the former could be used to quantitate the function of the latter. This was achieved using irradiation to selectively inactivate residual hemopoietic cells in long-term culture adherent layers, and using a medium containing cis-4-hydroxy-L-proline to selectively inactivate stromal cells and their precursors present in suspensions of unseparated human marrow which were then added back in co-culture experiments. My second objective was to develop a strategy for obtaining purified populations of cells corresponding to the various mesenchymal cell types in long-term adherent layers. I therefore prepared a high titre SV-40 virus stock and used it to establish permanent, cloned lines from human marrow "fibroblast" colonies, long-term culture adherent layers, and umbilical cord endothelial cells. Characterization of the transformants generated showed that they were all positive for SV-40, and in general expressed the phenotypic characteristics of the cells originally infected. Functional studies showed that these transformants, like their normal counterparts, respond to activation by producing two types of hemopoietic growth factors. These studies suggest that marrow mesenchymal cells may regulate the growth and maintenance of primitive hemopoietic cells by producing hemopoietic growth factors in response to appropriate perturbation. The availability of permanent cloned lines of human marrow stromal cells should facilitate future analysis of these events at the molecular level.
Geometrically Engineering the Standard Model: Locally Unfolding Three Families out of E8
Creators: name: Bourjaily, Jacob L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This paper extends and builds upon the results of an earlier paper, in which we described how to use the tools of geometrical engineering to deform geometrically-engineered grand unified models into ones with lower symmetry. This top-down unfolding has the advantage that the relative positions of singularities giving rise to the many `low energy' matter fields are related by only a few parameters which deform the geometry of the unified model. And because the relative positions of singularities are necessary to compute the superpotential, for example, this is a framework in which the arbitrariness of geometrically engineered models can be greatly reduced. In our earlier paper, this picture was made concrete for the case of deforming the representations of an SU(5) model into their Standard Model content. In this paper we continue that discussion to show how a geometrically engineered 16 of SO(10) can be unfolded into the Standard Model, and how the three families of the Standard Model uniquely emerge from the unfolding of a single, isolated E8 singularity.
description: 10 pages, 3 figures. Corrected typos and general editing blemishes
Negligible oxygen vacancies, low critical current density, electric-field modulation, in-plane anisotropic and high-field transport of a superconducting Nd0.8Sr0.2NiO2/SrTiO3 heterostructure
Creators: name: Zhou, Xiaorong
name: Feng, Zexin
name: Qin, Peixin
name: Yan, Han
name: Wang, Xiaoning
name: Nie, Pan
name: Wu, Haojiang
name: Zhang, Xin
name: Chen, Hongyu
name: Meng, Ziang
name: Zhu, Zengwei
name: Liu, Zhiqi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The emerging Ni-based superconducting oxide thin films are rather intriguing to the entire condensed matter physics. Here we report some brief experimental results on transport measurements for a 14-nm-thick superconducting Nd0.8Sr0.2NiO2/SrTiO3 thin-film heterostructure with an onset transition temperature of ~9.5 K. Photoluminescence measurements reveal that there is negligible oxygen vacancy creation in the SrTiO3 substrate during thin-film deposition and post chemical reduction for the Nd0.8Sr0.2NiO2/SrTiO3 heterostructure. It was found that the critical current density of the Nd0.8Sr0.2NiO2/SrTiO3 thin-film heterostructure is relatively small, ~4x10^3 A/cm2. Although the surface steps of SrTiO3 substrates lead to an anisotropy for in-plane resistivity, the superconducting transition temperatures are almost the same. The out-of-plane magnetotransport measurements yield an upper critical field of ~11.4 T and an estimated in-plane Ginzburg-Landau coherence length of ~5.4 nm. High-field magnetotransport measurements up to 50 T reveal anisotropic critical fields at 1.8 K for three different measurement geometries and a complicated Hall effect. An electric field applied via the SrTiO3 substrate slightly varies the superconducting transition temperature. These experimental results could be useful for this rapidly developing field.
description: 14 pages, 8 figures. Some typos are corrected and new references are included
แบบจำลองการยอมรับเทคโนโลยีระบบตรวจสอบกระเป๋าสัมภาระก่อนขึ้นเครื่อง ท่าอากาศยานนานาชาติสุวรรณภูมิ
Creators: name: จิรายุส ปิ่นสินชัย
Publisher: name: สำนักหอสมุด มหาวิทยาลัยรังสิต
Year: 2563
Subjects: ระบบตรวจสอบกระเป๋าสัมภาระก่อนขึ้นเครื่อง
ท่าอากาศยานนานาชาติสุวรรณภูมิ
แบบจำลองการยอมรับเทคโนโลยี
การยอมรับและใช้เทคโนโลยีสารสนเทศ

description: วารสารรังสิตสารสนเทศ, 26, 1, 73-96
Der Zukunftsmacher: Das Bild des Arbeiters bei Rosa Luxemburg und Karl Kautsky
Creators: name: Schelz-Brandenburg, Till
Publisher: name: Moving the Social
Year: 2014

description: This is the contribution "Der Zukunftsmacher: Das Bild des Arbeiters bei Rosa Luxemburg und Karl Kautsky" of MTS 29 (2003).
description: Moving the Social, Vol 29 (2003): Rosa Luxemburg und die Arbeiterbewegung
Cosmological perturbations from inhomogeneous preheating and multi-field trapping
Creators: name: Matsuda, Tomohiro
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider inhomogeneous preheating in a multi-field trapping model. The curvature perturbation is generated by inhomogeneous preheating which induces multi-field trapping at the enhanced symmetric point (ESP), and results in fluctuation in the number of e-foldings. Instead of considering simple reheating after preheating, we consider a scenario of shoulder inflation induced by the trapping. The fluctuation in the number of e-foldings is generated during this weak inflationary period, when the additional light scalar field is trapped at the local maximum of its potential. The situation may look similar to locked or thermal inflation or even to hybrid inflation, but we will show that the present mechanism of generating the curvature perturbation is very different from these others. Unlike the conventional trapped inflationary scenario, we do not make the assumption that an ESP appears at some unstable point on the inflaton potential. This assumption is crucial in the original scenario, but it is not important in the multi-field model. We also discuss inhomogeneous preheating at late-time oscillation, in which the magnitude of the curvature fluctuation can be enhanced to accommodate low inflationary scale.
description: 18pages, 2 figures, to appear in JHEP
คุณภาพบริการสารสนเทศของห้องสมุดมหาวิทยาลัยเทคโนโลยีราชมงคล
Creators: name: ส้มลิ้ม ครุฑวิลัย
Publisher: name: สำนักหอสมุด มหาวิทยาลัยรังสิต
Year: 2563
Subjects: คุณภาพบริการสารสนเทศ
มหาวิทยาลัยเทคโนโลยีราชมงคล

description: วารสารรังสิตสารสนเทศ, 26, 1, 97-118
The classification of surfaces with p_g=q=1 isogenous to a product of curves
Creators: name: Carnovale, Giovanna
name: Polizzi, Francesco
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Geometry (math.AG)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 14J29 (Primary) 14L30, 14Q99, 20F05 (Secondary)

description: A projective surface S is said to be isogenous to a product if there exist two smooth curves C, F and a finite group G acting freely on C \times F so that S=(C \times F)/G. In this paper we classify all surfaces with p_g=q=1 which are isogenous to a product.
description: 19 pages. Final version, to appear in Adv. Geom
Random generators of Markovian evolution: A quantum-classical transition by superdecoherence
Creators: name: Tarnowski, W.
name: Yusipov, I.
name: Laptyeva, T.
name: Denisov, S.
name: Chruściński, D.
name: Życzkowski, K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Continuous-time Markovian evolution appears to be manifestly different in classical and quantum worlds. We consider ensembles of random generators of $N$-dimensional Markovian evolution, quantum and classical ones, and evaluate their universal spectral properties. We then show how the two types of generators can be related by superdecoherence. In analogy with the mechanism of decoherence, which transforms a quantum state into a classical one, superdecoherence can be used to transform a Lindblad operator (generator of quantum evolution) into a Kolmogorov operator (generator of classical evolution). We inspect spectra of random Lindblad operators undergoing superdecoherence and demonstrate that, in the limit of complete superdecoherence, the resulting operators exhibit spectral density typical to random Kolmogorov operators. By gradually increasing strength of superdecoherence, we observe a sharp quantum-to-classical transition. Furthermore, we define an inverse procedure of supercoherification that is a generalization of the scheme used to construct a quantum state out of a classical one. Finally, we study microscopic correlation between neighbouring eigenvalues through the complex spacing ratios and observe the horse-shoe distribution, emblematic of the Ginibre universality class, for both types of random generators. Remarkably, it survives superdecoherence and supercoherification.
ADVANCEMENTS IN SENSOR AND CONTROL SYSTEMS FOR SPACE NUCLEAR REACTORS
Creators: name: Brandl, Edenilson
Publisher: name: Zenodo
Year: 2023
Subjects: Space nuclear reactors
Sensor technologies
Anomaly detection
Instrumentation
Radiation monitoring
Dual-verification control
Passive cooling
Modular reactors
Safety systems
Intelligent sensor networks

description: Space nuclear reactors are integral for powering long-duration space missions and interplanetary exploration. This article highlights critical developments in sensor and control systems for these reactors, emphasizing their importance in ensuring safe and efficient operation in harsh space environments. Redundant sensor configurations, advanced control algorithms, and intelligent sensor networks are discussed as key elements for precise control, real-time monitoring, and autonomous adaptation. Additionally, the integration of modular nuclear reactors and comprehensive safety systems is explored, showcasing their role in enhancing efficiency and mission reliability. These advancements represent significant progress in the field of space nuclear propulsion, enabling safer and more successful space exploration and research endeavors.

 

Weltraum-Kernreaktoren sind für die Stromversorgung langfristiger Weltraummissionen und interplanetarer Erkundungen von entscheidender Bedeutung. Dieser Artikel beleuchtet entscheidende Entwicklungen bei Sensor- und Steuerungssystemen für diese Reaktoren und betont deren Bedeutung für die Gewährleistung eines sicheren und effizienten Betriebs in rauen Weltraumumgebungen. Redundante Sensorkonfigurationen, fortschrittliche Steuerungsalgorithmen und intelligente Sensornetzwerke werden als Schlüsselelemente für präzise Steuerung, Echtzeitüberwachung und autonome Anpassung diskutiert. Darüber hinaus wird die Integration modularer Kernreaktoren und umfassender Sicherheitssysteme untersucht und deren Rolle bei der Verbesserung der Effizienz und Missionszuverlässigkeit aufgezeigt. Diese Fortschritte stellen einen bedeutenden Fortschritt auf dem Gebiet des nuklearen Weltraumantriebs dar und ermöglichen sicherere und erfolgreichere Weltraumforschungs- und Forschungsbemühungen.
A catalogue of low-mass X-ray binaries in the Galaxy, LMC, and SMC (Fourth edition)
Creators: name: Liu, Q. Z.
name: van Paradijs, J.
name: Heuvel, E. P. J. van den
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a new edition of the catalogue of the low-mass X-ray binaries in the Galaxy and the Magellanic Clouds. The catalogue contains source name(s), coordinates, finding chart, X-ray luminosity, system parameters, and stellar parameters of the components and other characteristic properties of 187 low-mass X-ray binaries, together with a comprehensive selection of the relevant literature. The aim of this catalogue is to provide the reader with some basic information on the X-ray sources and their counterparts in other wavelength ranges ($γ$-rays, UV, optical, IR, and radio). Some sources, however, are only tentatively identified as low-mass X-ray binaries on the basis of their X-ray properties similar to the known low-mass X-ray binaries. Further identification in other wavelength bands is needed to finally determine the nature of these sources. In cases where there is some doubt about the low-mass nature of the X-ray binary this is mentioned. Literature published before 1 October 2006 has, as far as possible, been taken into account.
description: 45 pages, catalogue included
การประเมินประสิทธิภาพ ประสิทธิผล และความพึงพอใจในการใช้โปรแกรม Chatbot ธนาคารในประเทศไทย
Creators: name: สุทธิภาส ชาญชัยศิลป์
Publisher: name: สำนักหอสมุด มหาวิทยาลัยรังสิต
Year: 2563
Subjects: โปรแกรม Chatbot
ประสิทธิภาพของ Chatbot ประสิทธิผลของ Chatbot
พฤติกรรมการใช้ Chatbot
ความพึงพอใจในการใช้ Chatbot

description: วารสารรังสิตสารสนเทศ, 26, 1, 119-138