cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Absolute Physical Calibration in the Infrared
Creators: name: Rieke, G. H.
name: Blaylock, M.
name: Decin, L.
name: Engelbracht, C.
name: Ogle, P.
name: Avrett, E.
name: Carpenter, J.
name: Cutri, R. M.
name: Armus, L.
name: Gordon, K.
name: Gray, R. O.
name: Hinz, J.
name: Su, K.
name: Willmer, Christopher N. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We determine an absolute calibration for the MIPS 24 microns band and recommend adjustments to the published calibrations for 2MASS, IRAC, and IRAS photometry to put them on the same scale. We show that consistent results are obtained by basing the calibration on either an average A0V star spectral energy distribution (SED), or by using the absolutely calibrated SED of the sun in comparison with solar-type stellar photometry (the solar analog method). After the rejection of a small number of stars with anomalous SEDs (or bad measurements), upper limits of ~ 1.5% (rms) are placed on the intrinsic infrared SED variations in both A dwarf and solar-type stars. These types of stars are therefore suitable as general-purpose standard stars in the infrared. We provide absolutely calibrated SEDs for a standard zero magnitude A star and for the sun to allow extending this work to any other infrared photometric system. They allow the recommended calibration to be applied from 1 to 25 microns with an accuracy of ~2 %, and with even higher accuracy at specific wavelengths such as 2.2, 10.6, and 24 microns, near which there are direct measurements. However, we confirm earlier indications that Vega does not behave as a typical A0V star between the visible and the infrared, making it problematic as the defining star for photometric systems. The integration of measurements of the sun with those of solar-type stars also provides an accurate estimate of the solar SED from 1 through 30 microns, which we show agrees with theoretical models.
description: 54 pages, 6 figures
X-ray spectroscopic survey of highly-accreting AGN
Creators: name: Laurenti, M.
name: Piconcelli, E.
name: Zappacosta, L.
name: Tombesi, F.
name: Vignali, C.
name: Bianchi, S.
name: Marziani, P.
name: Vagnetti, F.
name: Bongiorno, A.
name: Bischetti, M.
name: del Olmo, A.
name: Lanzuisi, G.
name: Luminari, A.
name: Middei, R.
name: Perri, M.
name: Ricci, C.
name: Vietri, G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Improving our understanding of the nuclear properties of high-Eddington ratio ($λ_\mathrm{Edd}$) active galactic nuclei (AGN) is necessary since the bulk of X-ray spectroscopic studies have been focused on low-Eddington AGN. We present here the X-ray spectral analysis of 14 radio-quiet, $λ_\mathrm{Edd}\gtrsim1$ AGN at $0.4\leq z \leq 0.75$, observed with XMM-Newton. Optical/UV data from simultaneous Optical Monitor observations have been also considered. These AGN have been selected to have relatively high values of black hole mass ($M_\mathrm{BH}\sim10^{8-8.5}M_\odot$) and bolometric luminosity ($L_\mathrm{bol} \sim 10^{46}$ erg s$^{-1}$), in order to complement previous studies of high-Eddington AGN at lower $M_\mathrm{BH}$ and $L_\mathrm{bol}$. We studied the relation between $λ_\mathrm{Edd}$ and other key X-ray spectral parameters, such as the photon index of the power-law continuum $Γ$, the X-ray bolometric correction $k_\mathrm{bol,X}$ and $α_\mathrm{ox}$. Despite the homogeneous optical and SMBH accretion properties, the X-ray properties of these high-Eddington AGN are quite heterogeneous. We measured values of $Γ$ comprised between 1.3 and 2.5, at odds with the expectations based on previously reported $Γ-λ_\mathrm{Edd}$ relations, by which $Γ\geq2$ would be an ubiquitous hallmark of AGN with $λ_\mathrm{Edd}\sim1$. We found that $\sim30\%$ of the sources are X-ray weak, with an X-ray emission about a factor of $\sim10-80$ fainter than that of typical AGN at similar UV luminosities. The X-ray weakness seems to be intrinsic and not due to intervening obscuration. This may indicate that high-Eddington AGN commonly undergo periods of intrinsic X-ray weakness. Furthermore, results from a follow-up monitoring with Swift of one of these X-ray weak AGN suggest that these periods can last for several years.
description: 17 pages, 8 figures (with 2 more figures in Appendix A and B). Accepted for publication in A&A
Detection and attribution of species distribution and richness changes: a case study of bird and vascular plant species in China
Creators: name: Wu, Jianguo
Publisher: name: Taylor & Francis
Year: 2025
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Ecology

description: In this study, data spanning 60 years on the distributions and richness of 19 bird species and 108 vascular plant species in China were utilized to detect and attribute multidirectional changes in distribution and richness. Between 1961 and 2020, approximately two-thirds of the studied species exhibited northward shifts in their northern boundaries or latitudinal centres of distribution, while significant statistical shifts in range variables occurred for less than one-third of the species. Changes in northern boundaries and distribution centres were observed for more than half of the studied species, with other directional shifts attributed to climate change affecting less than one-third of the species; additionally, some range shifts were linked to land-use activities. Furthermore, a significant shift was noted in the statistical distribution of richness among the studied species, accompanied by increases in both mean and median values; these changes in richness were associated with climate change as well as land-use factors.
Diagonal free field matrix correlators, global symmetries and giant gravitons
Creators: name: Brown, T. W.
name: Heslop, P. J.
name: Ramgoolam, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We obtain a basis of diagonal free field multi-matrix 2-point correlators in a theory with global symmetry group G. The operators fall into irreducible representations of G. This applies for gauge group U(N) at finite N. For composites made of n fundamental fields, this is expressed in terms of Clebsch-Gordan coefficients for the decomposition of the n-fold tensor products of the fundamental field representation in terms of G \times S_n representations. We use this general construction in the case of the SL(2) sector of \cN=4 SYM. In this case, by using oscillator constructions, we reduce the computation of the relevant Clebsch-Gordans coupling infinite dimensional discrete series irreps of SL(2) to a problem in symmetric groups. Applying these constructions we write down gauge invariant operators with a Fock space structure similar to that arising in a large angular momentum limit of worldvolume excitations of giant gravitons. The Fock space structure emerges from Clebsch multiplicities of tensor products of symmetric group representations. We also give the action of the 1-loop dilatation operator of \cN=4 SYM on this basis of multi-matrix operators.
description: 42 pages, no figures, comments and refs added
The VMC survey -- XLIII. The spatially resolved star formation history across the Large Magellanic Cloud
Creators: name: Mazzi, Alessandro
name: Girardi, Léo
name: Zaggia, Simone
name: Pastorelli, Giada
name: Rubele, Stefano
name: Bressan, Alessandro
name: Cioni, Maria-Rosa L.
name: Clementini, Gisella
name: Cusano, Felice
name: Rocha, João Pedro
name: Gullieuszik, Marco
name: Kerber, Leandro
name: Marigo, Paola
name: Ripepi, Vincenzo
name: Bekki, Kenji
name: Bell, Cameron P. M.
name: de Grijs, Richard
name: Groenewegen, Martin A. T.
name: Ivanov, Valentin D.
name: Oliveira, Joana M.
name: Sun, Ning-Chen
name: van Loon, Jacco Th.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We derive the spatially-resolved star formation history (SFH) for a $96$ deg$^2$ area across the main body of the Large Magellanic Cloud (LMC), using the near-infrared photometry from the VISTA survey of the Magellanic Clouds (VMC). The data and analyses are characterised by a great degree of homogeneity and a low sensitivity to the interstellar extinction. 756 subregions of size $0.125$ deg$^2$ -- corresponding to projected sizes of about $296\times322\,\mathrm{pc}^{2}$ in the LMC -- are analysed. The resulting SFH maps, with typical resolution of $0.2$--$0.3$ dex in logarithm of age, reveal main features in the LMC disc at different ages: the patchy star formation at recent ages, the concentration of star formation on three spiral arms and on the Bar up to ages of $\sim\!1.6$ Gyr, and the wider and smoother distribution of older populations. The period of most intense star formation occurred roughly between 4 and 0.5 Gyr ago, at rates of $\sim\!0.3\,\mathrm{M}_{\odot}\mathrm{yr}^{-1}$. We compare young and old star formation rates with the observed numbers of RR Lyrae and Cepheids. We also derive a mean extinction and mean distance for every subregion, and the plane that best describes the spatial distribution of the mean distances. Our results cover an area about 50 per cent larger than the classical SFH maps derived from optical data by Harris & Zaritsky (2009). Main differences with respect to those maps are lower star formation rates at young ages, and a main peak of star formation being identified at ages slightly younger than $1$ Gyr.
description: Accepted for publication in MNRAS
511 keV $γ$-ray emission from the galactic bulge by MeV millicharged dark matter
Creators: name: Huh, Ji-Haeng
name: Kim, Jihn E.
name: Park, Jong-Chul
name: Park, Seong Chan
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We propose a possible explanation for the recently observed anomalous 511 keV line with a new "millicharged" fermion. This new fermion is light [${\cal O}({\rm MeV})$]. Nevertheless, it has never been observed by any collider experiments by virtue of its tiny electromagnetic charge $εe$. In particular, we constrain parameters of this millicharged particle if the 511 keV cosmic $γ$-ray emission from the galactic bulge is due to positron production from this new particle.
description: 3 pages, 1 figure, A talk given by J.C.Park at the 16th International Conference on Supersymmetry and the Unification of Fundamental Interactions (SUSY08), Seoul, Korea, June 16-21, 2008
Bitwist 3-manifolds
Creators: name: Cannon, J. W.
name: Floyd, W. J.
name: Parry, W. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57Mxx

description: Our earlier twisted-face-pairing construction showed how to modify an arbitrary orientation-reversing face-pairing on a faceted 3-ball in a mechanical way so that the quotient is automatically a closed, orientable 3-manifold. The modifications were, in fact, parametrized by a finite set of positive integers, arbitrarily chosen, one integer for each edge class of the original face-pairing. This allowed us to find very simple face-pairing descriptions of many, though presumably not all, 3-manifolds. Here we show how to modify the construction to allow negative parameters, as well as positive parameters, in the twisted-face-pairing construction. We call the modified construction the bitwist construction. We prove that all closed connected orientable 3-manifolds are bitwist manifolds. As with the twist construction, we analyze and describe the Heegaard splitting naturally associated with a bitwist description of a manifold.
Modification of the 21-cm power spectrum by X-rays during the epoch of reionisation
Creators: name: Warszawski, Lila
name: Geil, Paul M.
name: Wyithe, Stuart
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We incorporate a contribution to reionization from X-rays within analytic and semi-numerical simulations of the 21-cm signal arising from neutral hydrogen during the epoch of reionization. We explore the impact that X-ray ionizations have on the power spectrum (PS) of 21-cm fluctuations by varying both the average X-ray MFP and the fractional contribution of X-rays to reionization. In general, prior to the epoch when the intergalactic medium is dominated by ionized regions (H {\sevensize II} regions), X-ray-induced ionization enhances fluctuations on spatial scales smaller than the X-ray MFP, provided that X-ray heating does not strongly supress galaxy formation. Conversely, at later times when \H2 regions dominate, small-scale fluctuations in the 21-cm signal are suppressed by X-ray ionization. Our modelling also shows that the modification of the 21-cm signal due to the presence of X-rays is sensitive to the relative scales of the X-ray MFP, and the characteristic size of \H2 regions. We therefore find that X-rays imprint an epoch and scale-dependent signature on the 21-cm PS, whose prominence depends on fractional X-ray contribution. The degree of X-ray heating of the IGM also determines the extent to which these features can be discerned. We show that the MWA will have sufficient sensitivity to detect this modification of the PS, so long as the X-ray photon MFP falls within the range of scales over which the array is most sensitive ($\sim0.1$ Mpc$^{-1}$). In cases in which this MFP takes a much smaller value, an array with larger collecting area would be required.
description: 15 pages, 6 figures, Accepted for publication in MNRAS X-ray heating contribution now added
Quantum Stephani Universe in vicinity of the symmetry center
Creators: name: Pedram, Pouria
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study a class of spherically symmetric Stephani cosmological models in the presence of a self-interacting scalar field in both classical and quantum domains. We discuss the construction of `canonical' wave packets resulting from the solutions of a class of Wheeler-DeWitt equations in the Stephani Universe. We suggest appropriate initial conditions which result in wave packets containing some desirable properties, most importantly good classical and quantum correspondence. We also study the situation from de-Broglie Bohm interpretation of quantum mechanics to recover the notion of time and compare the classical and Bohmian results. We exhibit that the usage of the canonical prescription and appropriate choices of expansion coefficients result in the suppression of the quantum potential and coincidence between classical and Bohmian results. We show that, in some cases, contrary to Friedmann-Robertson-Walker case, the bound state solutions also exist for all positive values of the cosmological constant.
description: 22 pages, 19 figures, to appear in JCAP
European VLBI Network observations of 6.7-GHz methanol masers in a candidate circumstellar disc
Creators: name: Harvey-Smith, Lisa
name: Soria-Ruiz, Rebeca
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The first high-resolution (5 mas) VLBI observations of 6.7-GHz methanol masers in DR21(OH)N, a candidate circumstellar disc around a very young massive star, are presented. Previous observations of these masers at 50 mas angular resolution revealed a rotating structure at the position of a candidate massive protostar, with a well-sampled position-velocity diagram suggesting Keplerian rotation. Observations presented here using the European VLBI Network (EVN) have provided the first high angular resolution maps of the masers, providing a test for the disc hypothesis and the Gaussian centroiding technique. The EVN maps have confirmed the shape of the disc and its rotation curve. Weaker maser emission seen previously with MERLIN between the two main spectral peaks is seen in the EVN total power spectrum, but is absent in the cross-power spectrum. This suggests that the spatially extended emission is resolved out by the EVN. The rotating disc is coincident with a Class I massive (proto)star and at the implied centre of an outflow traced by two bow shocks. We discuss the impact of this result on the massive stellar accretion disc hypothesis and on the validity of the centroiding technique to determine the structures of unresolved masers using compact radio interferometric arrays.
Error analysis of nuclear mass fits
Creators: name: Toivanen, J.
name: Dobaczewski, J.
name: Kortelainen, M.
name: Mizuyama, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We discuss the least-square and linear-regression methods, which are relevant for a reliable determination of good nuclear-mass-model parameter sets and their errors. In this perspective, we define exact and inaccurate models and point out differences in using the standard error analyses for them. As an illustration, we use simple analytic models for nuclear binding energies and study the validity and errors of models' parameters, and uncertainties of its mass predictions. In particular, we show explicitly the influence of mass-number dependent weights on uncertainties of liquid-drop global parameters.
description: 10 RevTeX pages, 9 figures, submitted to Physical Review C
Cronache del mondo fluttuante. Il teatro kabuki nei racconti di Ihara Saikaku
Creators: name: Titomanlio, Carlo
Publisher: name: Dipartimento delle Arti - Alma Mater Studiorum - Università di Bologna
Year: 2014

description: Abstract – IT
Nelle pagine di Ihara Saikaku, tra i massimi scrittori giapponesi del periodo Edo (XVII secolo), è possibile ricavare informazioni preziose sui primi decenni del teatro kabuki, una delle forme tradizionali di teatro giapponese. In particolare i suoi interpreti, talora censurati dalle autorità ma idolatrati da ogni classe sociale per le loro straordinarie doti tecniche e la loro avvenenza, sono i protagonisti di buona parte dei racconti inclusi nella silloge dal titolo Nanshoku ōkagamu(Il grande specchio dell’omosessualità maschile), pubblicata per la prima volta nel 1687.

Abstract – EN
In the pages of Ihara Saikaku, one of the greatest Japanese writers of the Edo period (seventeenth century), it is possible to obtain valuable information about the early decades of Kabuki theatre, a form of traditional Japanese theatre. Its male actors, sometimes censored by the authorities but idolized by every social class for their outstanding technical skills and their graceful beauty, are the main characters of most of the stories included in the anthology entitled Nanshoku ōkagamu (The great mirror of male homosexuality), first published in 1687.
description: Antropologia e Teatro. Rivista di Studi, No 5 (2014)
title: Frontmatter, Preface, Table of Contents, Workshop Organization
Creators: name: Lisper, Björn
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2010
Subjects: subject: Frontmatter
subject: Preface
subject: Table of Contents
subject: Workshop Organization

description: Frontmatter, Preface, Table of Contents, Workshop Organization.
description: OASIcs, Vol. 15, 10th International Workshop on Worst-Case Execution Time Analysis (WCET 2010), pages i-ix
Scaling relations and baryonic cycling in local star-forming galaxies. III. Outflows, effective yields and metal loading factors
Creators: name: Tortora, C.
name: Hunt, L. K.
name: Ginolfi, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Gas accretion and stellar feedback processes link metal content, star formation, and gas and stellar mass (and the potential depth) in star-forming galaxies. Constraining this hypersurface has been challenging because of the need for measurements of HI and HII gas masses spanning a broad parameter space. A recent step forward has been achieved through the "Metallicity And Gas for Mass Assembly" (MAGMA) sample of local star-forming galaxies, which consists of homogeneously-determined parameters and a significant quantity of dwarf galaxies, with stellar masses as low as $\sim 10^5 - 10^{6}\, M_{\odot}$. Here, we adopt a "standard" galactic chemical evolution model, with which we can quantify stellar-driven outflows. In particular, we constrain the difference between the mass-loading in accretion and outflows and the wind metal-loading factor. The resulting model reproduces very well the local mass-metallicity relation, and the observed trends of metallicity with gas fraction. Although the difference in mass loading between accreted and expelled gas is extremely difficult to constrain, we find indications that, on average, the amount of gas acquired through accretion is roughly the same as the gas lost through bulk stellar outflows, corresponding to a "gas equilibrium" scenario. In agreement with previous work, the wind metal-loading factor shows a steep increase toward lower mass and circular velocity, indicating that low-mass galaxies are more efficient at expelling metals, thus shaping the mass-metallicity relation. Effective yields are found to increase with mass up to an inflection mass threshold, with a mild decline at larger masses and circular velocities. A comparison of our results for metal loading in outflows with the expectations for their mass loading favors momentum-driven winds at low masses, rather than energy-driven ones. (abridged)
description: 21 pages, 13 figures, accepted for publication on A&A
Planar graphs without short even cycles are near-bipartite
Creators: name: Liu, Runrun
name: Yu, Gexin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: A graph is {\em near-bipartite} if its vertex set can be partitioned into an independent set and a set that induces a forest. It is clear that near-bipartite graphs are $3$-colorable. In this note, we show that planar graphs without cycles of lengths in $\{4, 6, 8\}$ are near-bipartite.
Stability of nonlinear one-dimensional laser pulse solitons in a plasma
Creators: name: Saxena, Vikrant
name: Das, Amita
name: Sengupta, Sudip
name: Kaw, Predhiman
name: Sen, Abhijit
Publisher: name: arXiv
Year: 2008
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: In a recent one-dimensional numerical fluid simulation study [Saxena et al., Phys. Plasmas 13,032309 (2006)], it was found that an instability is associated with a special class of one-dimensional nonlinear solutions for modulated light pulses coupled to electron plasma waves in a relativistic cold plasma model. It is shown here that the instability can be understood on the basis of the stimulated Raman scattering phenomenon and the occurrence of density bursts in the trailing edge of the modulated structures are a manifestation of an explosive instability arising from a nonlinear phase mixing mechanism.
description: 17 pages, 7 figures, Published in Phys. Plasmas
Blockchain Integrity, Security, Reliability for Cable Use Cases
Creators: Jason Rupe
Publisher: name: IEEE
Year: 2018

IEEE Reliability Society
Dr. Jason Rupe got his Ph.D. a long time ago, conducting research on large scale systems and networks for reliability and performance modeling. He taught quality control, reliability, and even a few software and electronics courses at various universities. He has worked at USWEST Advanced Technologies, Qwest Communications, Polar Star Consulting, Tenica, and as an independent consultant to the IEEE. In these companies, he has had titles including technical staff, senior technical staff, and director; but he has always been the companies� expert on reliability and quality. In these roles, he has been able to design or help design several networks for the government and private sector, assure broadband deployments are profitable and reliable, design solutions that meet targeted service level agreements, design and test network solutions for high reliability, and invent a few cool things too. He is heavily involved in the IEEE, in various roles at conferences, on the IEEE Reliability Society ExCom (elected), as a co-chair for the IEEE Blockchain Initiative, and as chair of IEEE Denver Section. Currently, he is the Principal Architect for Proactive Network Maintenance at CableLabs, where he is the champion for all opportunities to help the industry improve service reliability for the cable industry. He holds two patents, and is working on a bunch more.
Integrative Use of Computer Vision and Unmanned Aircraft Technologies in Public Inspection: Foreign Object Debris Image Collection
Creators: name: Munyer, Travis J. E.
name: Brinkman, Daniel
name: Huang, Chenyu
name: Zhong, Xin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Unmanned Aircraft Systems (UAS) have become an important resource for public service providers and smart cities. The purpose of this study is to expand this research area by integrating computer vision and UAS technology to automate public inspection. As an initial case study for this work, a dataset of common foreign object debris (FOD) is developed to assess the potential of light-weight automated detection. This paper presents the rationale and creation of this dataset. Future iterations of our work will include further technical details analyzing experimental implementation. At a local airport, UAS and portable cameras are used to collect the data contained in the initial version of this dataset. After collecting these videos of FOD, they were split into individual frames and stored as several thousand images. These frames are then annotated following standard computer vision format and stored in a folder-structure that reflects our creation method. The dataset annotations are validated using a custom tool that could be abstracted to fit future applications. Initial detection models were successfully created using the famous You Only Look Once algorithm, which indicates the practicality of the proposed data. Finally, several potential scenarios that could utilize either this dataset or similar methods for other public service are presented.
description: This paper has been accepted for publication by the 22nd Annual International Conference on Digital Government Research. 7 pages, 1 figure, 1 table
title: Frontmatter, Preface, Table of Contents, Workshop Organization
Creators: name: Matyska, Ludek
name: Kozubek, Michal
name: Vojnar, Tomas
name: Zemcik, Pavel
name: Antos, David
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2011
Subjects: subject: Frontmatter
subject: Preface
subject: Table of Contents
subject: Workshop Organization

description: Frontmatter, Preface, Table of Contents, Workshop Organization
description: OASIcs, Vol. 16, Sixth Doctoral Workshop on Mathematical and Engineering Methods in Computer Science (MEMICS'10) -- Selected Papers, pages i-viii
Measurement of the quenching factor of Na recoils in NaI(Tl)
Creators: name: Chagani, H.
name: Majewski, P.
name: Daw, E. J.
name: Kudryavtsev, V. A.
name: Spooner, N. J. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Measurements of the quenching factor for sodium recoils in a 5 cm diameter NaI(Tl) crystal at room temperature have been made at a dedicated neutron facility at the University of Sheffield. The crystal has been exposed to 2.45 MeV mono-energetic neutrons generated by a Sodern GENIE 16 neutron generator, yielding nuclear recoils of energies between 10 and 100 keVnr. A cylindrical BC501A detector has been used to tag neutrons that scatter off sodium nuclei in the crystal. Cuts on pulse shape and time of flight have been performed on pulses recorded by an Acqiris DC265 digitiser with a 2 ns sampling time. Measured quenching factors of Na nuclei range from 19% to 26% in good agreement with other experiments, and a value of 25.2 \pm 6.4% has been determined for 10 keV sodium recoils. From pulse shape analysis, the mean times of pulses from electron and nuclear recoils have been compared down to 2 keVee. The experimental results are compared to those predicted by Lindhard theory, simulated by the SRIM Monte Carlo code, and a preliminary curve calculated by Prof. Akira Hitachi.
description: 21 pages, 13 figures
Euclidean D-branes in Type IIB string theory on Calabi-Yau threefolds
Creators: name: Alexandrov, Sergei
name: Sen, Ashoke
name: Stefański, Bogdan
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the contribution of Euclidean D-branes in type IIB string theory on Calabi-Yau threefolds to the metric on the hypermultiplet moduli space in the large volume, weak coupling limit. Our results are in perfect agreement with the predictions based on S-duality, mirror symmetry and supersymmetry.
description: 33+18 pages
The Classification of Special Cohen-Macaulay Modules
Creators: name: Iyama, Osamu
name: Wemyss, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: In this paper we completely classify all the special Cohen-Macaulay (=CM) modules corresponding to the exceptional curves in the dual graph of the minimal resolutions of all two dimensional quotient singularities. In every case we exhibit the specials explicitly in a combinatorial way. Our result relies on realizing the specials as those CM modules whose first Ext group vanishes against the ring R, thus reducing the problem to combinatorics on the AR quiver; such possible AR quivers were classified by Auslander and Reiten. We also give some general homological properties of the special CM modules and their corresponding reconstruction algebras.
description: 36 pages, minor revision, to appear in Math. Z
Logo : an approach to computer-based learning
Creators: name: Pollack, Kimberly Ann Armstrong
Publisher: name: University of British Columbia
Year: 2010

description: The objective of this thesis is to explore the possible use of LOGO as a vehicle for computer assisted instruction in both secondary and post-secondary environments. The spectrum of current languages and systems for CAI is summarized by way of selected example languages and some of the most recent LOGO-based research is described. In particular, the work performed at BBN, MIT and at the University of Edinburgh is summarized. The remainder of the thesis is based on the author's experience in using LOGO at the University of British Columbia. Included are a new LOGO User's Manual and the results of an evaluation of both the language and the Manual as well as a discussion of the actions taken based on the students' responses. The thesis concludes with a comparison of LOGO with its nearest competitor (BASIC), a critique of the BCLOGO implementation and a final chapter containing the author's conclusions and proposals for future research.
Photometry and polarimetry of the nucleus of comet 2P/Encke
Creators: name: Boehnhardt, H.
name: Tozzi, G. P.
name: Bagnulo, S.
name: Muinonen, K.
name: Nathues, A.
name: Kolokolova, L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Broadband imaging photometry, and broadband and narrowband linear polarimetry was measured for the nucleus of 2P/Encke over the phase-angle range 4 - 28 deg. An analysis of the point spread function of the comet reveals only weak coma activity, corresponding to a dust production of the order of 0.05 kg/s. The nucleus displays a color independent photometric phase function of almost linear slope. The absolute R filter magnitude at zero phase angle is 15.05 +/- 0.05, and corresponds to an equivalent radius for the nucleus of 2.43 +/- 0.06 km (for an adopted albedo of 0.047). The nucleus color V - R is 0.47 +/- 0.07, suggesting a spectral slope of 11 +/- 8 %/100nm. The phase function of linear polarimetry in the V and R filters shows a widely color independent linear increase with phase angle (0.12 +/- 0.02%/deg). We find discrepancies in the photometric and polarimetric parameters between 2P/Encke and other minor bodies in the solar system, which may indicate significant differences in the surface material properties and light-scattering behavior of the bodies. The linear polarimetric phase function of 2P/Encke presented here is the first ever measured for a cometary nucleus, and its analysis encourages future studies of cometary nuclei in order to characterize the light-scattering behavior of comets on firm empirical grounds and provide suitable input to a comprehensive modeling of the light scattering by cometary surfaces.
description: Accepted by A&A
Figure S4. Fault motion reversals predating the Mw 6.3 2009 Lâ€™Aquila earthquake: Insights from synthetic aperture radar data
Creators: name: Mazzoli, Stefano
name: Nardò, Sergio
name: Ascione, Alessandra
name: Donato, Valentino Di
name: Terranova, Carlo
name: Vilardo, Giuseppe
Publisher: name: Geological Society of London
Year: 2021
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Figure S4: Mean velocities maps obtained from PS datasets from the Envisat ascending orbit in the 2003 – 2010 time span and location of the reference point.
Figure S2. Fault motion reversals predating the Mw 6.3 2009 L’Aquila earthquake: Insights from synthetic aperture radar data
Creators: name: Mazzoli, Stefano
name: Nardò, Sergio
name: Ascione, Alessandra
name: Donato, Valentino Di
name: Terranova, Carlo
name: Vilardo, Giuseppe
Publisher: name: Geological Society of London
Year: 2021
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Figure S2: Examples of ERS PS raw data from the 2009 L’Aquila earthquake epicentre region, obtained from images from the descending satellite orbit.
The impact of metallicity-dependent dust destruction on the dust-to-metals ratio in galaxies
Creators: name: Priestley, F. D.
name: De Looze, I.
name: Barlow, M. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The ratio of the mass of interstellar dust to the total mass of metals (the dust-to-metals/DTM ratio) tends to increase with metallicity. This can be explained by the increasing efficiency of grain growth in the interstellar medium (ISM) at higher metallicities, with a corollary being that the low DTM ratios seen at low metallicities are due to inefficient stellar dust production. This interpretation assumes that the efficiency of dust destruction in the ISM is constant, whereas it might be expected to increase at low metallicity; the decreased cooling efficiency of low-metallicity gas should result in more post-shock dust destruction via thermal sputtering. We show that incorporating a sufficiently strong metallicity dependence into models of galaxy evolution removes the need for low stellar dust yields. The contribution of stellar sources to the overall dust budget may be significantly underestimated, and that of grain growth overestimated, by models assuming a constant destruction efficiency.
description: 5 pages, 2 figures. MNRAS accepted
Analogue of Sylvester-Cayley formula for invariants of ternary form
Creators: name: Bedratyuk, Leonid
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 13N15, 13A50, 13F20

description: The number $ν_d(n)$ of linearly independed homogeneous invariants of degree $n$ for the ternary form of degree $d$ is calculated.
description: 7 pages
Dissecting Individual Ligand-Receptor Bonds with a Laminar Flow Chamber
Creators: name: Pierres, Anne
name: Vitte, Joana
name: Benoliel, Anne-Marie
name: Bongrand, Pierre
Publisher: name: arXiv
Year: 2008
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: The most important function of proteins may well be to bind to other biomolecules. It has long been felt that kinetic rates of bond formation and dissociation between soluble receptors and ligands might account for most features of the binding process. Only theoretical considerations allowed to predict the behaviour of surface-attached receptors from the properties of soluble forms. During the last decade, experimental progress essentially based on flow chambers, atomic force microscopes or biomembrane force probes allowed direct analysis of biomolecule interaction at the single bond level and gave new insight into previously ignored features such as bond mechanical properties or energy landscapes. The aim of this review is (i) to describe the main advances brought by laminar flow chambers, including information on bond response to forces, multiplicity of binding states, kinetics of bond formation between attached structures, effect of molecular environment on receptor efficiency and behaviour of multivalent attachment, (ii) to compare results obtain by this and other techniques on a few well defined molecular systems, and (iii) to discuss the limitations of the flow chamber method. It is concluded that a new framework may be needed to account for the effective behaviour of biomolecule association.
Thermal Conductivity of Thermally-Isolating Polymeric and Composite Structural Support Materials Between 0.3 and 4 K
Creators: name: Runyan, M. C.
name: Jones, W. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We present measurements of the low-temperature thermal conductivity of a number of polymeric and composite materials from 0.3 to 4 K. The materials measured are Vespel SP-1, Vespel SP-22, unfilled PEEK, 30% carbon fiber-filled PEEK, 30% glass-filled PEEK, carbon fiber Graphlite composite rod, Torlon 4301, G-10/FR-4 fiberglass, pultruded fiberglass composite, Macor ceramic, and graphite rod. These materials have moderate to high elastic moduli making them useful for thermally-isolating structural supports.
description: Accepted for publication in the journal Cryogenics
Active fault tolerant control for twin wind turbine subject to asymmetric fault
Creators: name: Makni, Mariem
name: Haidar, Ihab
name: Barbot, Jean-Pierre
name: Plestan, Franck
name: Feki, Nabih
name: Abbes, Mohamed Slim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper addresses the problem of control of a twin wind turbine which is subject to an electrical fault affecting only one stator phase of one turbine. An active fault tolerant control is proposed. The performance and robustness of the proposed control, comparing to a passive fault tolerant one developed in the literature, are shown through numerical simulations.
Vibration-induced climbing of drops
Creators: name: Brunet, P.
name: Eggers, J.
name: Deegan, R. D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We report an experimental study of liquid drops moving against gravity, when placed on a vertically vibrating inclined plate, which is partially wetted by the drop. The frequency of vibrations ranges from 30 to 200 Hz, and, above a threshold in vibration acceleration, drops experience an upward motion. We attribute this surprising motion to the deformations of the drop, as a consequence of an up or down symmetry breaking induced by the presence of the substrate. We relate the direction of motion to contact angle measurements. This phenomenon can be used to move a drop along an arbitrary path in a plane, without special surface treatments or localized forcing.
description: 4 pages, 7 figures
Figure S3. Fault motion reversals predating the Mw 6.3 2009 L’Aquila earthquake: Insights from synthetic aperture radar data
Creators: name: Mazzoli, Stefano
name: Nardò, Sergio
name: Ascione, Alessandra
name: Donato, Valentino Di
name: Terranova, Carlo
name: Vilardo, Giuseppe
Publisher: name: Geological Society of London
Year: 2021
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Figure S3: Examples of ERS PS raw data from the 2009 L’Aquila earthquake epicentre region, obtained from images from the ascending satellite orbit.
Materialized View Selection by Query Clustering in XML Data Warehouses
Creators: name: Mahboubi, Hadj
name: Aouiche, Kamel
name: Darmont, Jérôme
Publisher: name: arXiv
Year: 2008
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: XML data warehouses form an interesting basis for decision-support applications that exploit complex data. However, native XML database management systems currently bear limited performances and it is necessary to design strategies to optimize them. In this paper, we propose an automatic strategy for the selection of XML materialized views that exploits a data mining technique, more precisely the clustering of the query workload. To validate our strategy, we implemented an XML warehouse modeled along the XCube specifications. We executed a workload of XQuery decision-support queries on this warehouse, with and without using our strategy. Our experimental results demonstrate its efficiency, even when queries are complex.
Panglossian Prospects for Detecting Neutralino Dark Matter in Light of Natural Priors
Creators: name: Allanach, Benjamin C.
name: Hooper, Dan
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In most global fits of the constrained minimal supersymmetric model (CMSSM) to indirect data, the a priori likelihoods of any two points in tan beta are treated as equal, and the more fundamental mu and B Higgs potential parameters are fixed by potential minimization conditions. We find that, if instead a flat ("natural")prior measure on mu and B is placed, a strong preference exists for the focus point region from fits to particle physics and cosmological data. In particular, we find that the lightest neutralino is strongly favored to be a mixed bino-higgsino (~10% higgsino). Such mixed neutralinos have large elastic scattering cross sections with nuclei, leading to extremely promising prospects for both underground direct detection experiments and neutrino telescopes. In particular, the majority of the posterior probability distribution falls within parameter space within an order of magnitude of current direct detection constraints. Furthermore, neutralino annihilations in the sun are predicted to generate thousands of neutrino induced muon events per years at IceCube. Thus, assuming the framework of the CMSSM and using the natural prior measure, modulo caveats regarding astrophysical uncertainties, we are likely to be living in a world with good prospects for the direct and indirect detection of neutralino dark matter.
description: 25 pages, 9 figures
Figure S5. Fault motion reversals predating the Mw 6.3 2009 Lâ€™Aquila earthquake: Insights from synthetic aperture radar data
Creators: name: Mazzoli, Stefano
name: Nardò, Sergio
name: Ascione, Alessandra
name: Donato, Valentino Di
name: Terranova, Carlo
name: Vilardo, Giuseppe
Publisher: name: Geological Society of London
Year: 2021
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Figure S5: Mean velocities maps obtained from PS datasets from the Envisat descending orbit in the 2003 – 2010 time span and location of the reference point.
Deprojection of external barred galaxies from photometry
Creators: name: Tahmasebzadeh, Behzad
name: Zhu, Ling
name: Shen, Juntai
name: Gerhard, Ortwin
name: Qin, Yujing
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The observations of external galaxies are projected to the 2D sky plane. Reconstructing the 3D intrinsic density distribution of a galaxy from the 2D image is challenging, especially for barred galaxies, but is a critical step for constructing galactic dynamical models. Here we present a method for deprojecting barred galaxies and we validate the method by testing against mock images created from an N-body simulation with a peanut-shaped bar. We decompose a galaxy image into a bulge (including a bar) and a disk. By subtracting the disk from the original image a barred bulge remains. We perform multi-Gaussian expansion (MGE) fit to each component, then we deproject them separately by considering the barred bulge is triaxial while the disk is axisymmetric. We restrict the barred bulge to be aligned in the disk plane and has a similar thickness to the disk in the outer regions. The 3D density distribution is thus constructed by combining the barred bulge and the disk. Our model can generally recover the 3D density distribution of disk and inner barred bulge regions, although not a perfect match to the peanut-shaped structure. By using the same initial conditions, we integrate the orbits in our model-inferred potential and the true potential by freezing the N-body simulation. We find that 85% of all these orbits have similar morphologies in these two potentials, and our model supports the orbits that generate a boxy/peanut-shaped structure and an elongated bar similar to these in the true potential.
description: 15 pages, 15 figures. Accepted for publication in MNRAS
title: Frontmatter, Preface, Table of Contents, List of Authors
Creators: name: Luttenberger, Norbert
name: Peters, Hagen
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2011
Subjects: subject: Frontmatter
subject: Preface
subject: Table of Contents
subject: List of Authors

description: Frontmatter, Preface, Table of Contents, List of Authors
description: OASIcs, Vol. 17, 17th GI/ITG Conference on Communication in Distributed Systems (KiVS 2011), pages i-xi
Stabilized Kuramoto-Sivashinsky equation: A useful model for secondary instabilities and related dynamics of experimental one-dimensional cellular flows
Creators: name: Brunet, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We report numerical simulations of one-dimensional cellular solutions of the stabilized Kuramoto-Sivashinsky equation. This equation offers a range of generic behavior in pattern-forming instabilities of moving interfaces, such as a host of secondary instabilities or transition toward disorder. We compare some of these collective behaviors to those observed in experiments. In particular, destabilization scenarios of bifurcated states are studied in a spatially semi-extended situation, which is common in realistic patterns, but has been barely explored so far.
description: 4 pages, 14 figures