cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Modeling Multi-aspect Preferences and Intents for Multi-behavioral Sequential Recommendation
Creators: name: Liu, Haobing
name: Ding, Jianyu
name: Zhu, Yanmin
name: Tang, Feilong
name: Yu, Jiadi
name: Jiang, Ruobing
name: Guo, Zhongwen
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Multi-behavioral sequential recommendation has recently attracted increasing attention. However, existing methods suffer from two major limitations. Firstly, user preferences and intents can be described in fine-grained detail from multiple perspectives; yet, these methods fail to capture their multi-aspect nature. Secondly, user behaviors may contain noises, and most existing methods could not effectively deal with noises. In this paper, we present an attentive recurrent model with multiple projections to capture Multi-Aspect preferences and INTents (MAINT in short). To extract multi-aspect preferences from target behaviors, we propose a multi-aspect projection mechanism for generating multiple preference representations from multiple aspects. To extract multi-aspect intents from multi-typed behaviors, we propose a behavior-enhanced LSTM and a multi-aspect refinement attention mechanism. The attention mechanism can filter out noises and generate multiple intent representations from different aspects. To adaptively fuse user preferences and intents, we propose a multi-aspect gated fusion mechanism. Extensive experiments conducted on real-world datasets have demonstrated the effectiveness of our model.
General Poincaré Gauge Theory Cosmology
Creators: name: Ho, Fei-Hung
name: Chen, Hsin
name: Nester, James M.
name: Yo, Hwei-Jang
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: For the quadratic Poincaré gauge theory of gravity (PG) we consider the FLRW cosmologies using an isotropic Bianchi representation. Here the considered cosmologies are for the general case: all the even and odd parity terms of the quadratic PG with their respective scalar and pseudoscalar parameters are allowed with no \emph{a priori} restrictions on their values. With the aid of a manifestly homogeneous and isotropic representation, an effective Lagrangian gives the second order dynamical equations for the gauge potentials. An equivalent set of first order equations for the observables is presented. The generic behavior of physical solutions is discussed and illustrated using numerical simulations.
description: 22 pages
ขวัญกำลังใจในการปฏิบัติงานของกำลังพล กรมยุทธศึกษาทหารเรือ
Creators: name: มณิภา ชูตระกูล
Publisher: name: วารสารสหวิทยาการวิจัย: ฉบับบัณฑิตศึกษา
Year: 2023
Subjects: ขวัญกำลังใจในการปฏิบัติงานของกำลังพล
แรงจูงใจในการปฏิบัติงาน
กรมยุทธศึกษาทหารเรือ

description: วารสารสหวิทยาการวิจัย: ฉบับบัณฑิตศึกษา, 12, 1, 88-98
The mass of heavy-light mesons in a constituent quark picture with partially restored chiral symmetry
Creators: name: Park, Aaron
name: Gubler, Philipp
name: Harada, Masayasu
name: Lee, Su Houng
name: Nonaka, Chiho
name: Park, Woosung
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We probe effects of the partial chiral symmetry restoration to the mass of heavy-light mesons in a constituent quark model by changing the constituent quark mass of the light quark. Due to the competing effect between the quark mass and the linearly rising potential, whose contribution to the energy increases as the quark mass decreases, the heavy-light meson mass has a minimum value near the constituent quark mass typically used in the vacuum. Hence, the meson mass increases as one decreases the constituent quark mass consistent with recent QCD sum rule analyses, which show an increasing $D$ meson mass as the chiral order parameter decreases.
description: 4 pages, 4 figures
ความต้องการในการพัฒนาตนเองของบุคลากรกรมศิลปากร
Creators: name: พลอยณพรรษ คำมาก
Publisher: name: วารสารสหวิทยาการวิจัย: ฉบับบัณฑิตศึกษา
Year: 2023
Subjects: การพัฒนาตนเอง
แรงจูงใจ
ความพึงพอใจ
กรมศิลปากร

description: วารสารสหวิทยาการวิจัย: ฉบับบัณฑิตศึกษา, 12, 1, 99-110
Römische Kurie und Gemeinschaft der Kirchen
Creators: name: Huizing, Petrus
name: Walf, Knut
Publisher: name: Concilium
Year: 1970

description: Concilium, Bd. 15 Nr. 8/9 (1979): Concilium: Internationale Zeitschrift für Theologie, Band 15, Heft 8/9
Topological phases and Majorana states in screened interacting quantum wires
Creators: name: Xu, Hengyi
name: Xiong, Ye
name: Wang, Jun
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study theoretically the effects of long-range and on-site Coulomb interactions on the topological phases and transport properties of spin-orbit-coupled quasi-one-dimensional quantum wires imposed on an s-wave superconductor. The electrostatic potential and charge density distributions are computed self-consistently within the Hartree approximation. Due to the finite width of the wires and the charge repulsion, the potential and density distribute inhomogeneously in the transverse direction and tend to accumulate along the lateral edges where the hard-wall confinement is assumed. This result has profound effects on the topological phases and the differential conductance of the interacting quantum wires and their hybrid junctions with superconductors. Coulomb interactions renormalize the chemical potential, and alter the topological phases strongly by enhancing the topological regimes and producing jagged boundaries. Moreover, the multicritical points connecting different topological phases from high-index subbands are modified remarkably in striking contrast to the predictions of the two-band model. We further suggest the possible non-magnetic topological phase transitions manipulated externally with the aid of long-range interactions. Finally, the transport properties of normal-superconductor junctions are also examined and interaction impacts on the emergence of Majorana fermions and the strength of Majorana zero-bias peaks are revealed.
description: 7 pages, 6figures
คุณภาพของการประยุกต์ใช้การบัญชีสังคม: รากฐานที่มั่นคงสู่ความยั่งยืนของธุรกิจ
Creators: name: ภคพล สุนทรโรจน์
Publisher: name: วารสารสหวิทยาการวิจัย: ฉบับบัณฑิตศึกษา
Year: 2023
Subjects: ความรับผิดชอบต่อสังคม
การบัญชีสังคม
ความยั่งยืนของธุรกิจ

description: วารสารสหวิทยาการวิจัย: ฉบับบัณฑิตศึกษา, 12, 1, 111-125
โมเดลสมการโครงสร้างปัจจัยเชิงสาเหตุที่มีอิทธิพลต่อการจองที่พักในระบบออนไลน์ผ่านช่องทางตัวแทนโรงแรมและผ่านช่องทางโรงแรมโดยตรง
Creators: name: ทิพวรรณ ศรีจันทร์โพธิคุณ
Publisher: name: วารสารสหวิทยาการวิจัย: ฉบับบัณฑิตศึกษา
Year: 2023
Subjects: การจองที่พักในระบบออนไลน์
ตัวแทนท่องเที่ยว
โรงแรม

description: วารสารสหวิทยาการวิจัย: ฉบับบัณฑิตศึกษา, 12, 1, 126-138
Comparative Deep Learning of Hybrid Representations for Image Recommendations
Creators: name: Lei, Chenyi
name: Liu, Dong
name: Li, Weiping
name: Zha, Zheng-Jun
name: Li, Houqiang
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In many image-related tasks, learning expressive and discriminative representations of images is essential, and deep learning has been studied for automating the learning of such representations. Some user-centric tasks, such as image recommendations, call for effective representations of not only images but also preferences and intents of users over images. Such representations are termed \emph{hybrid} and addressed via a deep learning approach in this paper. We design a dual-net deep network, in which the two sub-networks map input images and preferences of users into a same latent semantic space, and then the distances between images and users in the latent space are calculated to make decisions. We further propose a comparative deep learning (CDL) method to train the deep network, using a pair of images compared against one user to learn the pattern of their relative distances. The CDL embraces much more training data than naive deep learning, and thus achieves superior performance than the latter, with no cost of increasing network complexity. Experimental results with real-world data sets for image recommendations have shown the proposed dual-net network and CDL greatly outperform other state-of-the-art image recommendation solutions.
description: CVPR 2016
A Comparative Study of Nucleon Structure in Light-Front Quark Models in AdS/QCD
Creators: name: Mondal, Chandan
name: Chakrabarti, Dipankar
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a comparative study of nucleon structure such as electromagnetic form factors, transverse charge and magnetization densities in three different models within AdS/QCD framework.
description: 5 pages, 4 figures; prepared for the proceedings of Light Cone 2015, September 21-25, INFN Frascati, Italy
Towards a robust algorithm to determine topological domains from colocalization data
Creators: name: Moscalets, Alexander P.
name: Nazarov, Leonid I.
name: Tamm, Mikhail V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Genomics (q-bio.GN)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: One of the most important tasks in understanding the complex spatial organization of the genome consists in extracting information about this spatial organization, the function and structure of chromatin topological domains from existing experimental data, in particular, from genome colocalization (Hi-C) matrices. Here we present an algorithm allowing to reveal the underlying hierarchical domain structure of a polymer conformation from analyzing the modularity of colocalization matrices. We also test this algorithm on several model polymer structures: equilibrium globules, random fractal globules and regular fractal (Peano) conformations. We define what we call a spectrum of cluster borders, and show that these spectra behave strikingly differently for equilibrium and fractal conformations, allowing us to suggest an additional criterion to identify fractal polymer conformations.
Management options of valvular heart diseases after heart transplantation: A scoping review
Creators: name: Yilmaz, Ogulcan
name: M. Keenan, Niamh
Publisher: name: University of Limerick
Year: 2024
Subjects: classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences

description: Background: This study aimed to outline the valvular changes following heart transplantation and describe the management options to address these conditions. Methods: A literature search using EMBASE, MEDLINE, and PubMed databases was performed in accordance with the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines in this study. Clinical studies involving patients who had their first heart transplant and articles that mentioned management for valvular heart disease were included. Treatment options were grouped into four categories: cardiac surgery other than retransplant and valve surgery, valve replacement and repairs, nonsurgical interventions, and conservative management. Results: Nine hundred and three (6.56%) patients out of 13,757 patients (10,529 males, 3,228 females; mean age: 60.3±10.4 years; range, 20 to 83 years) undergoing heart transplantation were identified with valvular disease affecting one or more valves. The mean interval between the transplant and the diagnosis of valve disease was 11.31±6.95 years. The most common valvular heart disease was tricuspid regurgitation, with 796 (94.09%) occurrences, followed by mitral regurgitation (n=22, 2.6%), aortic regurgitation (n=14, 1.65%), aortic stenosis (n=11, 1.3%), and mitral stenosis (n=3, 0.35%). Additionally, the number of surgical valve replacement and repairs (n=89) was higher than nonsurgical interventions (n=20).Conclusion: Acquired valvular heart diseases after cardiac transplantation are an infrequent clinical presentation that can cause valvular changes in the recipient. According to the extracted data, there is no sole superior management option, and more research is needed in this area.
The exact calculation of the edge components of the angular Fock coefficients
Creators: name: Liverts, Evgeny Z.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The present paper constitutes the development of our previous work devoted to calculations of the angular Fock coefficients, $ψ_{k,p}(α,θ)$. The explicit analytic representations for the edge components $ψ_{k,0}^{(0)}$ and $ψ_{k,0}^{(k)}$ with $k\leq8$ are derived. The methods developed enable such a calculation for arbitrary $k$. The single-series representation for subcomponent $ψ_{3,0}^{(2e)}$ missed in the previous paper is developed. It is shown how to express some of the complicated subcomponents through the hypergeometric and the elementary functions, as well. Using the specific operator of the Wolfram Mathematica, the simple explicit representations for some complex mathematical objects under consideration are obtained.
description: 25 pages
Applying Energy Absorption Interferometry to THz direct detectors using photomixers
Creators: name: Veenendaal, Ian
name: Castillo-Dominguez, Edgar
name: Yates, Stephen J. C.
name: Lap, Bram
name: Jellema, Willem
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Detector requirements for far infrared astronomy generally result in devices which exhibit a few-moded response to incident radiation. The sensitivity and spatial form of the individual modes to which such a detector is sensitive can be determined with knowledge of the complex valued cross-spectral density of the system, which we label the detector response function (DRF). A matrix representing the discretized cross-spectral density can be measured from the complex amplitudes of interference fringes generated by two identical sources as they are independently scanned through the field of view. We provide experimental verification of this technique using monochromatic THz beams generated by photomixers in which the relative phase is varied with fiber stretchers. We use this system to characterize the modal response of a single pixel from an array of microwave kinetic inductance detectors (MKIDs).
description: in IEEE Transactions on Terahertz Science and Technology. 2023
Nanoscopic Characterization of DNA within Hydrophobic Pores:Thermodynamics and Kinetics
Creators: name: Cruz, Fernando J. A. L.
name: de Pablo, Juan J.
name: Mota, José P. B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The energetic and transport properties of a double-stranded DNA dodecamer encapsulated in hydrophobic carbon nanotubes are probed employing two limiting nanotube diameters, D=4 nm and D=3 nm, corresponding to (51,0) and (40,0) zig-zag topologies, respectively. It is observed that the thermodynamically spontaneous encapsulation in the 4 nm nanopore (40 kJ/mol) is annihilated when the solid diameter narrows down to 3 nm, and that the confined DNA termini directly contact the hydrophobic walls with no solvent slab in-between. During the initial moments after confinement (2-3 ns),the biomolecule translocates along the nano pore's inner volume according to Fick's law (t) with a self-diffusion coefficient D=1.713 x 10-9m2/s, after which molecular diffusion assumes a single-file type mechanism (t1/2). As expected, diffusion is anisotropic, with the pore main axis as the preferred direction, but an in-depth analysis shows that the instantaneous velocity probabilities are essentially identical along the x, y and z directions. The 3D velocity histogram shows a maximum probability located at v=30.8 m/s, twice the observed velocity for a single-stranded three nucleotide DNA encapsulated in comparable armchair geometries (v=16.7 m/s, D=1.36-1.89 nm). Because precise physiological conditions (310 K, [NaCl] = 134 mM) are employed throughout, the present study establishes a landmark for the development of next generation in vivo drug delivery technologies based on carbon nanotubes as encapsulation agents.
description: arXiv admin note: text overlap with arXiv:1605.01317
A possible Chandra and Hubble Space Telescope detection of extragalactic WHIM towards PG 1116+215
Creators: name: Bonamente, M.
name: Nevalainen, J.
name: Tilton, E.
name: Liivamagi, J.
name: Tempel, E.
name: Heinamaki, P.
name: Fang, T.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: (Abridged) We have analyzed Chandra LETG and XMM-Newton RGS spectra towards the z=0.177 quasar PG 1116+215, a sightline that is rendered particularly interesting by the HST detection of several OVI and HI broad Lyman-alpha absorption lines that may be associated with the warm-hot intergalactic medium. We performed a search for resonance K-alpha absorption lines from OVII and OVIII at the redshifts of the detected far-ultraviolet lines. We detected an absorption line in the Chandra spectra at 5.2 sigma confidence level at wavelengths corresponding to OVIII K-alpha at z=0.0911+-0.0004+-0.0005 (statistical followed by systematic error). This redshift is within 3 sigma of that of a HI broad Lyman-alpha of b=130 km/s at z=0.09279+-0.00005. We have also analyzed the available XMM-Newton RGS data towards PG 1116+215. Unfortunately, the XMM-Newton data are not suitable to investigate this line because of instrumental features at the wavelengths of interest. At the same redshift, the Chandra and XMM-Newton spectra have OVII K-alpha absorption line features of significance 1.5 sigma and 1.8 sigma, respectively. We also analyzed the available SDSS spectroscopic galaxy survey data towards PG 1116+215 in the redshift range of interest. We found evidence for a galaxy filament that intersects the PG 1116+215 sightline and additional galaxy structures that may host WHIM. The combination of HST, Chandra, XMM-Newton and SDSS data indicates that we have likely detected a multi-temperature WHIM at z=0.091-0.093 towards PG 1116+215.
description: Accepted for publication in MNRAS
Nearly optimal separations between communication (or query) complexity and partitions
Creators: name: Kothari, Robin
Publisher: name: arXiv
Year: 2015
Subjects: subject: Computational Complexity (cs.CC)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We show a nearly quadratic separation between deterministic communication complexity and the logarithm of the partition number, which is essentially optimal. This improves upon a recent power 1.5 separation of Göös, Pitassi, and Watson (FOCS 2015). In query complexity, we establish a nearly quadratic separation between deterministic (and even randomized) query complexity and subcube partition complexity, which is also essentially optimal. We also establish a nearly power 1.5 separation between quantum query complexity and subcube partition complexity, the first superlinear separation between the two measures. Lastly, we show a quadratic separation between quantum query complexity and one-sided subcube partition complexity. Our query complexity separations use the recent cheat sheet framework of Aaronson, Ben-David, and the author. Our query functions are built up in stages by alternating function composition with the cheat sheet construction. The communication complexity separation follows from lifting the query separation to communication complexity.
description: 13 pages
The phase-functions method and full cross-section of nucleon-nucleon scattering
Creators: name: Zhaba, V. I.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: For calculation of the single-channel nucleon-nucleon scattering a phase-functions method has been considered. Using a phase-functions method the following phase shifts of a nucleon-nucleon scattering are calculated numerically: nn (1S0-, 3P0-, 3P1-, 1D2-, 3F3- state), pp (1S0-, 3P0-, 3P1-, 1D2- state) and np (1S0-, 1P1-, 3P0-, 3P1-, 1D2-, 3D2- state). The calculations has been performed using realistic nucleon-nucleon potentials Nijmegen groups (NijmI, NijmII, Reid93) and potential Argonne v18. Obtained phase shifts are in good agreement with the results obtained in the framework of other methods. Using the obtained phase shifts we have calculated the full cross-section. Our results are in good agreement with those obtained by using known phases published in literature. The odds between calculations depending on a computational method of phases of scattering makes: 0,2-6,3% for pp- and 0,1-5,3% for np- scatterings (NijmI, NijmII), 0,1-4,1% for pp- and 0,1-0,4% for np- scatterings (Reid93), no more than 4,5% (Argonne v18).
description: 6 pages, 3 tables
A young star-forming galaxy at z = 3.5 with an extended Ly\,$α$ halo seen with MUSE
Creators: name: Patrício, Vera
name: Richard, Johan
name: Verhamme, Anne
name: Wisotzki, Lutz
name: Brinchmann, Jarle
name: Turner, Monica L.
name: Christensen, Lise
name: Weilbacher, Peter M.
name: Blaizot, Jérémy
name: Bacon, Roland
name: Contini, Thierry
name: Lagattuta, David
name: Cantalupo, Sebastiano
name: Clément, Benjamin
name: Soucail, Geneviève
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Spatially resolved studies of high redshift galaxies, an essential insight into galaxy formation processes, have been mostly limited to stacking or unusually bright objects. We present here the study of a typical (L$^{*}$, M$_\star$ = 6 $\times 10^9$ $M_\odot$) young lensed galaxy at $z=3.5$, observed with MUSE, for which we obtain 2D resolved spatial information of Ly$α$ and, for the first time, of CIII] emission. The exceptional signal-to-noise of the data reveals UV emission and absorption lines rarely seen at these redshifts, allowing us to derive important physical properties (T$_e\sim$15600 K, n$_e\sim$300 cm$^{-3}$, covering fraction f$_c\sim0.4$) using multiple diagnostics. Inferred stellar and gas-phase metallicities point towards a low metallicity object (Z$_{\mathrm{stellar}}$ = $\sim$ 0.07 Z$_\odot$ and Z$_{\mathrm{ISM}}$ $
description: 19 pages, 15 figures, accepted in MNRAS
Diophantine equations via cluster transformations
Creators: name: Lampe, Philipp
Publisher: name: arXiv
Year: 2016
Subjects: subject: Number Theory (math.NT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 13F60 (Primary) 11D25 (Secondary)

description: Motivated by Fomin and Zelevinsky's theory of cluster algebras we introduce a variant of the Markov equation; we show that all natural solutions of the equation arise from an initial solution by cluster transformations.
description: 11 pages, 7 figures
Fun with higher-loop Feynman diagrams
Creators: name: Luthe, Thomas
name: Schroder, York
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We review recent progress that we have achieved in evaluating the class of fully massive vacuum integrals at five loops. After discussing topics that arise in classification, evaluation and algorithmic codification of this specific set of Feynman integrals, we present some selected new results for their expansions around $4-2\varepsilon$ dimensions.
description: 5 pages, 2 figures. to appear in the proceedings of ACAT 2016
Forschungszentren im Dienst der Begegnung zwischen dem Christentum und China
Creators: name: Digan, Parig L.
Publisher: name: Concilium
Year: 1970

description: Concilium, Bd. 15 Nr. 6/7 (1979): Concilium: Internationale Zeitschrift für Theologie, Band 15, Heft 6/7
Hypercalibration: A Pan-STARRS1-based recalibration of the Sloan Digital Sky Survey
Creators: name: Finkbeiner, Douglas P.
name: Schlafly, Edward F.
name: Schlegel, David J.
name: Padmanabhan, Nikhil
name: Juric, Mario
name: Burgett, William S.
name: Chambers, Kenneth C.
name: Denneau, Larry
name: Draper, Peter W.
name: Flewelling, Heather
name: Hodapp, Klaus W.
name: Kaiser, Nick
name: Magnier, E. A.
name: Metcalfe, N.
name: Morgan, Jeffrey S.
name: Price, Paul A.
name: Stubbs, Christopher W.
name: Tonry, John L.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present a recalibration of the Sloan Digital Sky Survey (SDSS) photometry with new flat fields and zero points derived from Pan-STARRS1 (PS1). Using PSF photometry of 60 million stars with $16 < r < 20$, we derive a model of amplifier gain and flat-field corrections with per-run RMS residuals of 3 millimagnitudes (mmag) in $griz$ bands and 15 mmag in $u$ band. The new photometric zero points are adjusted to leave the median in the Galactic North unchanged for compatibility with previous SDSS work. We also identify transient non-photometric periods in SDSS ("contrails") based on photometric deviations co-temporal in SDSS bands. The recalibrated stellar PSF photometry of SDSS and PS1 has an RMS difference of {9,7,7,8} mmag in $griz$, respectively, when averaged over $15'$ regions.
description: 13 pages, 7 figures, ApJ, in press. "Hypercalibration" refers to using repeat measurements of many stars from multiple surveys to constrain calibration parameters
Time evolutions of scalar field perturbations in $D$-dimensional Reissner-Nordström Anti-de Sitter black holes
Creators: name: Li, Ran
name: Zhang, Hongbao
name: Zhao, Junkun
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Reissner-Nordström Anti-de Sitter (RNAdS) black holes are unstable against the charged scalar field perturbations due to the well-known superradiance phenomenon. We present the time domain analysis of charged scalar field perturbations in the RNAdS black hole background in general dimensions. We show that the instabilities of charged scalar field can be explicitly illustrated from the time profiles of evolving scalar field. By using the Prony method to fit the time evolution data, we confirm the mode that dominates the long time behavior of scalar field is in accordance with the quasinormal mode from the frequency domain analysis. The superradiance origin of the instability can also be demonstrated by comparing the real part of the dominant mode with the superradiant condition of charged scalar field. It is shown that all the unstable modes are superradiant, which is consistent with the analytical result in the frequency domain analysis. Furthermore, we also confirm there exists the rapid exponential growing modes in the RNAdS case, which makes the RNAdS black hole a good test ground to investigate the nonlinear evolution of superradiant instability.
description: 15 pages, 7 figures
Review of Bioprinting in Regenerative Medicine Naturally Derived Bioinks and Stem Cells.
Creators: name: Moghaddam, Abolfazl Salehi
name: Khonakdar, Hossein Ali
name: Arjmand, Mohammad
name: Jafari, Seyed Hassan
name: Bagher, Zohreh
name: Salehi Moghaddam, Zahra
name: Chimerad, Mohammadreza
name: Mollapour Sisakht, Mahsa
name: Shojaei, Shahrokh
Publisher: name: figshare
Year: 2022
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: Regenerative medicine offers the potential to repair or substitute defective tissues by constructing active tissues to address the scarcity and demands for transplantation. The method of forming 3D constructs made up of biomaterials, cells, and biomolecules is called bioprinting. Bioprinting of stem cells provides the ability to reliably recreate tissues, organs, and microenvironments to be used in regenerative medicine. 3D bioprinting is a technique that uses several biomaterials and cells to tailor a structure with clinically relevant geometries and sizes. This technique’s promise is demonstrated by 3D bioprinted tissues, including skin, bone, cartilage, and cardiovascular, corneal, hepatic, and adipose tissues. Several bioprinting methods have been combined with stem cells to effectively produce tissue models, including adult stem cells, embryonic stem cells (ESCs), induced pluripotent stem cells (iPSCs), and differentiation techniques. In this review, technological challenges of printed stem cells using prevalent naturally derived bioinks (e.g., carbohydrate polymers and protein-based polymers, peptides, and decellularized extracellular matrix), recent advancements, leading companies, and clinical trials in the field of 3D bioprinting are delineated.
Constraints on Dark Matter Annihilation/Decay from the Isotropic Gamma-Ray Background
Creators: name: Liu, Wei
name: Bi, Xiao-Jun
name: Lin, Su-Jie
name: Yin, Peng-Fei
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work we study the constraints on dark matter (DM) annihilation/decay from the Fermi-LAT Isotropic Gamma-Ray Background (IGRB) observation. We consider the contributions from both extragalactic and galactic DM components. For DM annihilation, the evolutions of extragalactic DM halos are taken into account. We find that the IGRB constraints under some DM subhalo models can be comparable to those derived from the observations of dwarf spheroidal galaxies. We also use the IGRB results to constrain the parameter regions accounting for the latest AMS-02 electron-positron anomaly. We find that the majority of DM annihilation/decay channels are strongly disfavored by the latest Fermi-LAT IGRB observation; only DM annihilation/decay to $μ^+μ^-$ may be valid.
description: 27 pages, 6 figures
Traceability of thread measurements : Expert report DKD-E 4-1
Creators: name: Krause, Marlen
name: Wedmann, Achim
name: Stein, Martin
Publisher: name: Physikalisch-Technische Bundesanstalt (PTB)
Year: 2023
Subjects: DKD Expert Report
thread measurands
pitch diameter
virtual pitch diameter
major diameter
minor diameter
pitch
lead
thread angle
flank angle

description: Metrology plays an essential role in the quality assurance of thread production.. While the testing of workpiece threads is typically carried out by means of gauges, the plug and ring gauges used must be previously calibrated, using suitable measuring methods. In Germany, the calibration of thread gauges is currently carried out by 47 calibration laboratories accredited for thread measurement by the German Accreditation Body (Deutsche Akkreditierungsstelle or DAkkS for short). By means of reference standards, these laboratories establish the traceability of their measurements to national standards of the Physikalisch-Technische Bundesanstalt (PTB) or other National Metrology Institutes (NMI), which are directly linked to the metre, the unit of length in the International System of Units (SI), via primary measurement procedures. Over the past decades, the ever-growing demand from industry for a more precise measuring technology to increase the quality of production with ever smaller manufacturing tolerances has led to the development of innovative measuring methods in thread measurement. Established methods such as the three-wire or two-ball method are now frequently supplemented by profile methods (stylus instrument procedures) and coordinate measurements. And there are other approaches using optical or other kinds of non-contact sensors. The variety of available measuring methods requires harmonisation because it must be ensured that different methods provide comparable measuring results. The difficulties already start with the definition of the fundamental quantities (thread parameters). These parameters must be unambiguous and accessible for all measurement methods. The basic metrological principles and test instructions for cylindrical threaded plug gauges and rings are described in the guidelines VDI/VDE/DGQ 2618 Part 4.8 and 4.9:2006-04. A detailed description of the procedure for determining the pitch diameter with the three-wire or two-ball method according to Berndt and Kochsiek and Lerch can be found in the European guideline EURAMET cg-10:2012-12. The application of these guidelines is limited explicitly to cylindrical threads. Besides, these guidelines rather focus on the technical details of measuring and calculating the determining parameters and not so much on providing basic statements on how to realise a reliable and task-specific traceability. This report is applicable to single and multiple-threaded cylindrical or tapered plug gauges and ring gauges, with straight flanks and positive flank angles. This report is intended to provide an in-depth overview of the requirements necessary for reliable and traceable thread measurements to ensure comparability both between different laboratories and when using different measuring methods.
High resolution X-ray tomography as a tool for analysis of internal textures in meteorites
Creators: name: Krzesińska, Agata
Publisher: name: Faculty of Geoengineering, Mining and Geology, Wrocław University of Science and Technology; Polish Meteorite Society
Year: 2011
Subjects: NWA-5929, Ghubara, Pułtusk, high resolution X-ray computed tomography, deformation

description: Meteorites, Vol. 1, No. 1, 2011; ISSN 2299-0313
Resolved Magnetic-Field Structure and Variability Near the Event Horizon of Sagittarius A*
Creators: name: Johnson, Michael D.
name: Fish, Vincent L.
name: Doeleman, Sheperd S.
name: Marrone, Daniel P.
name: Plambeck, Richard L.
name: Wardle, John F. C.
name: Akiyama, Kazunori
name: Asada, Keiichi
name: Beaudoin, Christopher
name: Blackburn, Lindy
name: Blundell, Ray
name: Bower, Geoffrey C.
name: Brinkerink, Christiaan
name: Broderick, Avery E.
name: Cappallo, Roger
name: Chael, Andrew A.
name: Crew, Geoffrey B.
name: Dexter, Jason
name: Dexter, Matt
name: Freund, Robert
name: Friberg, Per
name: Gold, Roman
name: Gurwell, Mark A.
name: Ho, Paul T. P.
name: Honma, Mareki
name: Inoue, Makoto
name: Kosowsky, Michael
name: Krichbaum, Thomas P.
name: Lamb, James
name: Loeb, Abraham
name: Lu, Ru-Sen
name: MacMahon, David
name: McKinney, Jonathan C.
name: Moran, James M.
name: Narayan, Ramesh
name: Primiani, Rurik A.
name: Psaltis, Dimitrios
name: Rogers, Alan E. E.
name: Rosenfeld, Katherine
name: SooHoo, Jason
name: Tilanus, Remo P. J.
name: Titus, Michael
name: Vertatschitsch, Laura
name: Weintroub, Jonathan
name: Wright, Melvyn
name: Young, Ken H.
name: Zensus, J. Anton
name: Ziurys, Lucy M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Near a black hole, differential rotation of a magnetized accretion disk is thought to produce an instability that amplifies weak magnetic fields, driving accretion and outflow. These magnetic fields would naturally give rise to the observed synchrotron emission in galaxy cores and to the formation of relativistic jets, but no observations to date have been able to resolve the expected horizon-scale magnetic-field structure. We report interferometric observations at 1.3-millimeter wavelength that spatially resolve the linearly polarized emission from the Galactic Center supermassive black hole, Sagittarius A*. We have found evidence for partially ordered fields near the event horizon, on scales of ~6 Schwarzschild radii, and we have detected and localized the intra-hour variability associated with these fields.
description: Accepted for publication in Science; includes Supplementary material
Comparing the diversity of information by word-of-mouth vs. web spread
Creators: name: Sela, Alon
name: Shekhtman, Louis
name: Havlin, Shlomo
name: Ben-Gal, Irad
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Many studies have explored spreading and diffusion through complex networks. The following study examines a specific case of spreading of opinions in modern society through two spreading schemes, defined as being either through word-of-mouth (WOM), or through online search engines (WEB). We apply both modelling and real experimental results and compare the opinions people adopt through an exposure to their friend`s opinions, as opposed to the opinions they adopt when using a search engine based on the PageRank algorithm. A simulated study shows that when members in a population adopt decisions through the use of the WEB scheme, the population ends up with a few dominant views, while other views are barely expressed. In contrast, when members adopt decisions based on the WOM scheme, there is a far more diverse distribution of opinions in that population. The simulative results are further supported by an online experiment which finds that people searching information through a search engine end up with far more homogenous opinions as compared to those asking their friends.
An Artificial Neural Network Approach For Ranking Quenching Parameters In Central Galaxies
Creators: name: Teimoorinia, Hossen
name: Bluck, Asa F. L.
name: Ellison, Sara L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a novel technique for ranking the relative importance of galaxy properties in the process of quenching star formation. Specifically, we develop an artificial neural network (ANN) approach for pattern recognition and apply it to a population of over 400,000 central galaxies taken from the Sloan Digital Sky Survey Data Release 7. We utilise a variety of physical galaxy properties for training the pattern recognition algorithm to recognise star forming and passive systems, for a `training set' of $\sim$100,000 galaxies. We then apply the ANN model to a `verification set' of $\sim$100,000 different galaxies, randomly chosen from the remaining sample. The success rate of each parameter singly, and in conjunction with other parameters, is taken as an indication of how important the parameters are to the process(es) of central galaxy quenching. We find that central velocity dispersion, bulge mass and B/T are excellent predictors of the passive state of the system, indicating that properties related to the central mass of the galaxy are most closely linked to the cessation of star formation. Larger scale galaxy properties (total or disk stellar masses), or those linked to environment (halo masses or $δ_5$) perform significantly less well. Our results are plausibly explained by AGN feedback driving the quenching of central galaxies, although we discuss other possibilities as well.
description: 22 pages, 22 figures, Accepted for publication in MNRAS
Exploring limits to prediction in complex social systems
Creators: name: Martin, Travis
name: Hofman, Jake M.
name: Sharma, Amit
name: Anderson, Ashton
name: Watts, Duncan J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Social and Information Networks (cs.SI)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: How predictable is success in complex social systems? In spite of a recent profusion of prediction studies that exploit online social and information network data, this question remains unanswered, in part because it has not been adequately specified. In this paper we attempt to clarify the question by presenting a simple stylized model of success that attributes prediction error to one of two generic sources: insufficiency of available data and/or models on the one hand; and inherent unpredictability of complex social systems on the other. We then use this model to motivate an illustrative empirical study of information cascade size prediction on Twitter. Despite an unprecedented volume of information about users, content, and past performance, our best performing models can explain less than half of the variance in cascade sizes. In turn, this result suggests that even with unlimited data predictive performance would be bounded well below deterministic accuracy. Finally, we explore this potential bound theoretically using simulations of a diffusion process on a random scale free network similar to Twitter. We show that although higher predictive power is possible in theory, such performance requires a homogeneous system and perfect ex-ante knowledge of it: even a small degree of uncertainty in estimating product quality or slight variation in quality across products leads to substantially more restrictive bounds on predictability. We conclude that realistic bounds on predictive accuracy are not dissimilar from those we have obtained empirically, and that such bounds for other complex social systems for which data is more difficult to obtain are likely even lower.
description: 12 pages, 6 figures, Proceedings of the 25th ACM International World Wide Web Conference (WWW) 2016
QUILT: Effective Multi-Class Classification on Quantum Computers Using an Ensemble of Diverse Quantum Classifiers
Creators: name: Silver, Daniel
name: Patel, Tirthak
name: Tiwari, Devesh
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Quantum computers can theoretically have significant acceleration over classical computers; but, the near-future era of quantum computing is limited due to small number of qubits that are also error prone. Quilt is a framework for performing multi-class classification task designed to work effectively on current error-prone quantum computers. Quilt is evaluated with real quantum machines as well as with projected noise levels as quantum machines become more noise-free. Quilt demonstrates up to 85% multi-class classification accuracy with the MNIST dataset on a five-qubit system.
OFDM demodulation using virtual time reversal processing in underwater acoustic communication
Creators: name: Yin, Yanling
name: Liu, Songzuo
name: Qiao, Gang
name: Yang, Yue
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: Sound (cs.SD)
subject: FOS: Computer and information sciences

description: The extremely long underwater channel delay spread causes severe inter-symbol interference (ISI) for underwater acoustic communications. Passive time reversal processing (PTRP) can effectively reduce the channel time dispersion in a simple way via convolving the received packet with a time reversed probe signal. However the probe signal itself may introduce extra noise and interference (self-correlation of the probe signal). In this paper, we propose a virtual time reversal processing (VTRP) for single input single output (SISO) Orthogonal Frequency Division Multiplexing (OFDM) systems. It convolves the received packet with the reversed estimated channel, instead of the probe signal to reduce the interference. Two sparse channel estimation methods, matching pursuit (MP), and basis pursuit de-noising (BPDN), are adopted to estimate the channel impulse response (CIR). We compare the performance of VTRP with the PTRP and without any time reversal processing through MATLAB simulations and the pool experiments. The results reveal that VTRP has outstanding performance over time-invariant channels.
Plane density of induced vacuum charge in a supercritical Coulomb potential
Creators: name: Khalilov, V. R.
name: Mamsurov, I. V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: An expression for the density of a planar induced vacuum charge is obtained in a strong Coulomb potential in coordinate space. Treatment is based on a self-adjoint extension approach for constructing of the Green's function of a charged fermion in this potential. Induced vacuum charge density is calculated and analyzed at the subcritical and supercritical Coulomb potentials for massless and massive fermions. The behavior of the obtained vacuum charge density is investigated at long and short distances from the Coulomb center. The induced vacuum charge has a screening sign. Screening of a Coulomb impurity in graphene is briefly discussed. We calculate the real vacuum polarization charge density that acquires the quantum electrodynamics vacuum in the supercritical Coulomb potential due to the so-called real vacuum polarization. It is shown that the vacuum charge densities essentially differ in massive and massless cases. We expect that our results can, as a matter of principle, be tested in graphene with a supercritical Coulomb impurity.
description: 12 pages. arXiv admin note: substantial text overlap with arXiv:1601.07668
Application of a symplectic integrator in a non-integrable relativistic system
Creators: name: Kopáček, Ondřej
name: Karas, Vladimír
name: Kovář, Jiří
name: Stuchlík, Zdeněk
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a detailed comparison of several integration schemes applied to the dynamic system consisting of a charged particle on the Kerr background endowed with the axisymmetric electromagnetic test field. In particular, we compare the performance of the symplectic integrator with several non-symplectic routines and discuss under which circumstances we should choose the symplectic one and when we should switch to some other scheme. We are basically concerned with two crucial, yet opposing aspects - accuracy of the integration and CPU time consumption. The latter is generally less critical in our application while the highest possible accuracy is strongly demanded.
description: 11 pages, 5 figures, 2 tables, prepared in 2011 for the Proceedings of RAGtime 10-13: Workshops on black holes and neutron stars (Opava, September 15 - 17, 2010)
Antonio Calabrò, Maurizio Ferrera, Piergaetano Marchetti, Alberto Martinelli, Antonio Padoa-Schioppa, Paola Profeta, Essere Europa,Milano, La Nave di Teseo, 2022, 112 pp.
Creators: name: De Europa, Redazione
Publisher: name: De Europa
Year: 2023

description: De Europa, Vol. 6 No. 1 (2023)