cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
XUV frequency comb metrology on the ground state of helium
Creators: name: Kandula, Dominik Z.
name: Gohle, Christoph
name: Pinkert, Tjeerd J.
name: Ubachs, Wim
name: Eikema, Kjeld S. E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The operation of a frequency comb at extreme ultraviolet (XUV) wavelengths based on pair-wise amplification and nonlinear upconversion to the 15th harmonic of pulses from a frequency comb laser in the near-infrared range is reported. Following a first account of the experiment [Kandula et al., Phys. Rev. Lett. 105, 063001 (2010)], an extensive review is given of the demonstration that the resulting spectrum at 51 nm is fully phase coherent and can be applied to precision metrology. The pulses are used in a scheme of direct-frequency-comb excitation of helium atoms from the ground state to the 1s4p and 1s5p 1P_1 states. Laser ionization by auxiliary 1064 nm pulses is used to detect the excited state population, resulting in a cosine-like signal as a function of the repetition rate of the frequency comb with a modulation contrast of up to 55%. Analysis of the visibility of this comb structure yields an estimated timing jitter between the two upconverted comb laser pulses of 50 attoseconds, whch indicates that extension to even shorter wavelengths should be feasible. The helium metrology investigation results in transition frequencies of 5740806993(10) MHz and 5814248672(6) MHz for excitation of the 1s4p and 1s5p 1P_1 states, respectively. This constitutes the first absolute frequency measurement in the XUV, attaining unprecedented accuracy in this windowless part of the electromagnetic spectrum. From the measured transition frequencies an eight-fold improved 4He ionization energy of 5945204212(6) MHz is derived. Also a new value for the 4He ground state Lamb shift is found of 41247(6) MHz. This experimental value is in agreement with recent theoretical calculations up to order mα^6 and m^2/(Mα^5), but with a six times higher precision, therewith providing a stringent test of quantum electrodynamics in bound two-electron systems.
description: 18 pages, 13 figures
Anisotropic Mechanical Properties of 3D Printed Poly-Lactic Acid Parts in the Plane Stress State
Creators: name: Zohourkari, Iman
Publisher: name: figshare
Year: 2023
Subjects: Mechanical engineering not elsewhere classified
Numerical modelling and mechanical characterisation
Composite and hybrid materials

description: The 3D printing process is an efficient and cost-effective production method for the rapid manufacture of parts that are complex in terms of geometry,
 structure and mechanical behavior. Studying the mechanical behavior of these structures is very important to understand and optimize the performance of 3D
 printed materials. In this article, the mechanical properties of 3D printed parts for PLA material are studied based on the constitutive stress-strain relationship
 in a plane stress state, and the effect of fabrication angle on the anisotropy properties of the material is analyzed using simple tensile tests in different material
 directions. Assuming an orthotropic behavior, the changes in strength due to anisotropy are investigated. It has been observed that the assumption of
 orthotropic behavior is a suitable assumption to express the mechanical behavior of fabricated materials using 3D printing methods. The results obtained can
 be used in software for numerical analysis of 3D printed parts similar to composite modeling.
Body size and trophic level increase with latitude and decrease in the deep-sea and Antarctica for marine fish species
Creators: name: Lin, Han-Yang
name: Costello, Mark
Publisher: name: figshare
Year: 2022
Subjects: Marine and estuarine ecology (incl. marine ichthyology)

description: This dataset describes the modelled distribution range of latitude and depth for 5619 marine fish. In addition, the maximum body sizes and trophic levels of 5619 marine fish.
Unidimensional model of the ad-atom diffusion on a substrate submitted to a standing acoustic wave I. Derivation of the ad-atom motion equation
Creators: name: Combe, Nicolas
name: Taillan, C.
name: Morillo, J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The effect of a standing acoustic wave on the diffusion of an ad-atom on a crystalline surface is theoretically studied. We used an unidimensional space model to study the ad-atom+substrate system. The dynamic equation of the ad-atom, a Generalized Langevin equation, is analytically derived from the full Hamiltonian of the ad-atom+substrate system submitted to the acoustic wave. A detailed analysis of each term of this equation, as well as of their properties, is presented. Special attention is devoted to the expression of the effective force induced by the wave on the ad-atom. It has essentially the same spatial and time dependences as its parent standing acoustic wave.
Free trade and petrochemicals in Alberta
Creators: name: Goerzen, Brenda
Publisher: name: University of Calgary
Year: 1988
Subjects: subject: HF 2651 P47 G63 1988
subject: Free trade
subject: Tariff - Law and legislation - Canada
subject: Tariff - Law and legislation - United States
subject: Canada - Economic policy
subject: Petroleum chemicals industry - Economic aspects - Alberta
subject: Ethane industry - Economic aspects - Alberta
subject: Canada - Commercial treaties
subject: United States - Commercial treaties

description: Bibliography: p. 161-165.
Latitudinal and depth gradients of body size and trophic level for marine fish
Creators: name: Lin, Han-Yang
name: Costello, Mark
Publisher: name: figshare
Year: 2022
Subjects: Marine and estuarine ecology (incl. marine ichthyology)

description: This dataset describes the modelled distribution range of latitude and depth for 5619 marine fish. In addition, the maximum body sizes and trophic levels of 5619 marine fish.
Hawking radiation of Dirac particles from black strings
Creators: name: Ahmed, Jamil
name: Saifullah, K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Hawking radiation has been studied as a phenomenon of quantum tunneling in different black holes. In this paper we extend this semi-classical approach to cylindrically symmetric black holes. Using the Hamilton-Jacobi method and WKB approximation we calculate the tunneling probabilities of incoming and outgoing Dirac particles from the event horizon and find the Hawking temperature of these black holes. We obtain results both for uncharged as well as charged particles.
Lower bounds for finding the maximum and minimum elements with k lies
Creators: name: Pálvölgyi, Dömötör
Publisher: name: arXiv
Year: 2011
Subjects: subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences
subject: F.2.2
subject: 68P10

description: In this paper we deal with the problem of finding the smallest and the largest elements of a totally ordered set of size $n$ using pairwise comparisons if $k$ of the comparisons might be erroneous where $k$ is a fixed constant. We prove that at least $(k+1.5)n+Θ(k)$ comparisons are needed in the worst case thus disproving the conjecture that $(k+1+ε)n$ comparisons are enough.
Random non-crossing plane configurations: A conditioned Galton-Watson tree approach
Creators: name: Curien, Nicolas
name: Kortchemski, Igor
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We study various models of random non-crossing configurations consisting of diagonals of convex polygons, and focus in particular on uniform dissections and non-crossing trees. For both these models, we prove convergence in distribution towards Aldous' Brownian triangulation of the disk. In the case of dissections, we also refine the study of the maximal vertex degree and validate a conjecture of Bernasconi, Panagiotou and Steger. Our main tool is the use of an underlying Galton-Watson tree structure.
description: 24 pages, 9 figures
Probing New Physics via pp-> W+W- -> lvjj at the CERN LHC
Creators: name: Liu, Shuai
name: Mao, Yajun
name: Ban, Yong
name: Govoni, Pietro
name: Li, Qiang
name: Asawatangtrakuldee, Chayanit
name: Xu, Zijun
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: TeV scale new Physics, e.g., Large Extra Dimensions or Models with anomalous triple vector boson couplings, can lead to excesses in various kinematic regions on the semi-leptonic productions of pp -> WW -> lvjj at the CERN LHC, which, although suffers from large QCD background compared with the pure leptonic channel, can benefit from larger production rates and the reconstructable 4-body mass Mlvjj. We study the search sensitivity through the lvjj channel at the 7TeV LHC on relevant new physics, via probing the hard tails on the reconstructed Mlvjj and the transverse momentum of W-boson (PTW), taking into account main backgrounds and including the parton shower and detector simulation effects. Our results show that with integrated luminosity of 5fb-1, the LHC can already discovery or exclude a large parameter region of the new physics, e.g., 95% CL. limit can be set on the Large Extra Dimensions with a cut-off scale up to 1.5 TeV, and the WWZ anomalous coupling down to, e.g. |λ_Z|~0.1. Brief results are also given for the 8TeV LHC.
description: 13 pages, 6 figures, 2 tables
Tilman G. Moritz, Autobiographik als ritterschaftliche Selbstverständigung. Ulrich von Hutten, Götz von Berlichingen, Sigmund von Herberstein, Göttingen (V&R unipress) 2019
Creators: name: Hassler, Éric
Publisher: name: Francia-Recensio
Year: 2020

description: Tilman G. Moritz, Autobiographik als ritterschaftliche Selbstverständigung. Ulrich von Hutten, Götz von Berlichingen, Sigmund von Herberstein, Göttingen (V&R unipress) 2019, 266 S., 3 Abb. (Formen der Erinnerung, 70), ISBN 978-3-8471-0975-4, EUR 45,00.
description: Francia-Recensio, 2020/2
Rita Schober – Vita. Eine Nachlese. Ediert, kommentiert und mit Texten aus Archiven und dem Nachlass erweitert von Dorothee Röseberg, Tübingen (narr/francke/attempto) 2018
Creators: name: Barjonet, Aurélie
Publisher: name: Francia-Recensio
Year: 2020

description: Rita Schober – Vita. Eine Nachlese. Ediert, kommentiert und mit Texten aus Archiven und dem Nachlass erweitert von Dorothee Röseberg, Tübingen (narr/francke/attempto) 2018, 366 S., 2 farb.,36 s/w Abb. (edition lendemains, 46), ISBN 978-3-8233-8227-0, EUR 78,00.
description: Francia-Recensio, 2020/2
The Bruhat--Chevalley order on involutions of the hyperoctahedral group and combinatorics of $B$-orbit closures
Creators: name: Ignatyev, Mikhail V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 17B08

description: Let $G$ be the symplectic group, $Φ=C_n$ its root system, $B\subset G$ its standard Borel subgroup, $W$ the Weyl group of $Φ$. To each involution $σ\in W$ one can assign the $B$-orbit $Ω_σ$ contained in the dual space of the Lie algebra of the unipotent radical of $B$. We prove that $Ω_σ$ is contained in the Zariski closure of $Ω_τ$ if and only of $σ\leqτ$ with respect to the Bruhat--Chevalley order. We also prove that $\dimΩ_σ$ is equal to $l(σ)$, the length of $σ$ in $W$.
description: 13 pages
Claire Gantet, Markus Meumann (dir.), Les échanges savants franco-allemands au XVIIIe siècle. Transferts, circulations et réseaux, Rennes (Presses universitaires de Rennes) 2019
Creators: name: Pujo, Pauline
Publisher: name: Francia-Recensio
Year: 2020

description: Claire Gantet, Markus Meumann (dir.), Les échanges savants franco-allemands au XVIIIe siècle. Transferts, circulations et réseaux, Rennes (Presses universitaires de Rennes) 2019, 356 p., 13 ill. (Histoire), ISBN 978-2-7535-7820-3, EUR 28,00.
description: Francia-Recensio, 2020/3
Soft masses in SUSY SO(10) GUTs with low intermediate scales
Creators: name: De Romeri, Valentina
name: Hirsch, Martin
name: Malinský, Michal
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The specific shape of the squark, slepton and gaugino mass spectra, if measured with suficient accuracy, can provide invaluable information not only about the dynamics underpinning their origin at some very high scale such as the unification scale MG, but also about the intermediate scale physics encountered throughout their RGE evolution down to the energy scale accessible for the LHC. In this work, we study general features of the TeV scale soft SUSY breaking parameters stemming from a generic mSugra configuration within certain classes of SUSY SO(10) GUTs with different intermediate symmetries below MG. We show that particular combinations of soft masses show characteristic deviations from the mSugra limit in different models and thus, potentially, allow to distinguish between these, even if the new intermediate scales are outside the energy range probed at accelerators. We also compare our results to those obtained for the three minimal seesaw models with mSugra boundary conditions and discuss the main differences between those and our SO(10) based models.
description: 18 pages, 12 figures, 5 tables
Samantha Kahn Herrick, Hagiography and the History of Latin Christendom, 500–1500, Leiden, Boston (Brill Academic Publishers) 2019
Creators: name: Wagner, Anne
Publisher: name: Francia-Recensio
Year: 2020

description: Samantha Kahn Herrick, Hagiography and the History of Latin Christendom, 500–1500, Leiden, Boston (Brill Academic Publishers) 2019, 500 p. (Reading Medieval Sources, 4), ISBN 978-90-04-41747-2 (E-Book), EUR 205,00.
description: Francia-Recensio, 2020/3
Françoise Lainé (éd.), Les obituaires de l’abbaye de Clairac. Avec la collaboration de Hervé Bouillac, Pierre Simon et Jean-Loup Lemaitre, Paris (Académie des inscriptions et belles-lettres) 2019
Creators: name: Neiske, Franz
Publisher: name: Francia-Recensio
Year: 2020

description: Françoise Lainé (éd.), Les obituaires de l’abbaye de Clairac. Avec la collaboration de Hervé Bouillac, Pierre Simon et Jean-Loup Lemaitre, Paris (Académie des inscriptions et belles-lettres) 2019, X–422 p., 24 ill. en coul. (Recueil des historiens de la France. Obituaires. Série in-8°, 19), ISBN 978-2-87754-379-8, EUR 50,00.
description: Francia-Recensio, 2020/3
Brigitte Meijns, Steven Vanderputten (ed.), Bishops in the Long Tenth Century. Episcopal Authorities in France and Lotharingia, c. 900–c. 1050. Special Issue, Turnhout (Brepols) 2019
Creators: name: Gaillard, Michèle
Publisher: name: Francia-Recensio
Year: 2020

description: Brigitte Meijns, Steven Vanderputten (ed.), Bishops in the Long Tenth Century. Episcopal Authorities in France and Lotharingia, c. 900–c. 1050. Special Issue, Turnhout (Brepols) 2019, VI–233 p., 3 b/w ill., 3 b/w tabl. (The Medieval Low Countries, 6), ISBN 978-2-503-58281-8, EUR 79,00.
description: Francia-Recensio, 2020/3
Extragalactic propagation of ultrahigh energy cosmic-rays
Creators: name: Allard, Denis
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In this paper we review the extragalactic propagation of ultrahigh energy cosmic-rays (UHECR). We present the different energy loss processes of protons and nuclei, and their expected influence on energy evolution of the UHECR spectrum and composition. We discuss the possible implications of the recent composition analyses provided by the Pierre Auger Observatory. The influence of extragalactic magnetic fields and possible departures from the rectilinear case are also mentioned as well as the production of secondary cosmogenic neutrinos and photons and the constraints their observation would imply for the UHECRs origin. Finally, we conclude by briefly discussing the relevance of a multi messenger approach for solving the mystery of UHECRs.
description: 45 pages, 16 figures Extended version of a paper to be published in the topical issue of Astroparticle Physics on Cosmic-rays
Craniofacial reconstruction as a prediction problem using a Latent Root Regression model
Creators: name: Berar, Maxime
name: Tilotta, Françoise
name: Glaunès, Joan Alexis
name: Rozenholc, Yves
Publisher: name: arXiv
Year: 2012
Subjects: subject: Machine Learning (cs.LG)
subject: Tissues and Organs (q-bio.TO)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: In this paper, we present a computer-assisted method for facial reconstruction. This method provides an estimation of the facial shape associated with unidentified skeletal remains. Current computer-assisted methods using a statistical framework rely on a common set of extracted points located on the bone and soft-tissue surfaces. Most of the facial reconstruction methods then consist of predicting the position of the soft-tissue surface points, when the positions of the bone surface points are known. We propose to use Latent Root Regression for prediction. The results obtained are then compared to those given by Principal Components Analysis linear models. In conjunction, we have evaluated the influence of the number of skull landmarks used. Anatomical skull landmarks are completed iteratively by points located upon geodesics which link these anatomical landmarks, thus enabling us to artificially increase the number of skull points. Facial points are obtained using a mesh-matching algorithm between a common reference mesh and individual soft-tissue surface meshes. The proposed method is validated in term of accuracy, based on a leave-one-out cross-validation test applied to a homogeneous database. Accuracy measures are obtained by computing the distance between the original face surface and its reconstruction. Finally, these results are discussed referring to current computer-assisted reconstruction facial techniques.
Charles D. Stanton, Roger of Lauria (c. 1250–1305). »Admiral of Admirals«, Woodbridge (The Boydell Press) 2019
Creators: name: Panarelli, Francesco
Publisher: name: Francia-Recensio
Year: 2020

description: Charles D. Stanton, Roger of Lauria (c. 1250–1305). »Admiral of Admirals«, Woodbridge (The Boydell Press) 2019, 346 p., 20 b/w, 15 col. ill. (Warfare in History, 47), ISBN 978-1-78327-453-6, GBP 65,00.
description: Francia-Recensio, 2020/3
Gaffnian holonomy through the coherent state method
Creators: name: Flavin, John
name: Thomale, Ronny
name: Seidel, Alexander
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We analyze the effect of exchanging quasiholes described by Gaffnian quantum Hall trial state wave functions. This exchange is carried out via adiabatic transport using the recently developed coherent state Ansatz. We argue that our Ansatz is justified if the Gaffnian parent Hamiltonian has a charge gap, even though it is gapless to neutral excitations, and may therefore properly describe the adiabatic transport of Gaffnian quasiholes. For nonunitary states such as the Gaffnian, the result of adiabatic transport cannot agree with the monodromies of the conformal block wave functions, and may or may not lead to well-defined anyon statistics. Using the coherent state Ansatz, we find two unitary solutions for the statistics, one of which agrees with the statistics of the non-Abelian spin-singlet state by Ardonne and Schoutens.
description: 11 pages, 4 figures
Charge conservation and the shape of the ridge of two-particle correlations in relativistic heavy-ion collisions
Creators: name: Bozek, Piotr
name: Broniowski, Wojciech
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We demonstrate that in the framework of the event-by-event hydrodynamics followed by statistical hadronization, the proper charge conservation in the mechanism of hadron production provides the crucial non-flow component and leads to agreement with the two-dimensional two-particle correlation data in relative azimuthal angle and pseudorapidity at soft transverse momenta (p_T<2GeV). The fall-off of the same-side ridge in relative pseudorapidity follows from the fact that a pair of particles with balanced charges is emitted from the same fluid element, whose collective velocity collimates the momenta of the pair. We reproduce basic experimental features of the two-dimensional correlation function, such as the dependence on the relative charge and centrality, as well as the related charge balance functions and the harmonic flow coefficients as functions of the relative pseudorapidity.
description: 4 pages, 5 figures
Airdrie: a needs assessment survey
Creators: name: Gubbels, Paula
Publisher: name: University of Calgary
Year: 1988
Subjects: subject: HV 700 C3 G83 1988
subject: Human services - Alberta - Airdrie
subject: Needs assessment - Alberta - Airdrie

description: Bibliography: p. 116-119.
description: The major purpose of this research study was to conduct a needs assessment in the city of Airdrie. A questionnaire was developed and mailed to a random sample of 530 residents. Respondents were asked to respond to questions which focused on their attitudes toward Airdrie, their perceptions on social problems, their satisfaction with the current social service delivery system, and their experiences in using the services available. Demographic data was also collected. Results showed that residents generally enjoyed Iiving in Airdrie and that they shared a sense of community spirit and pride. There was, however, concern among residents toward social issues such as unemployment, substance abuse and family conflict. Generally, respondents were dissatisfied with the current level of services available. Results indicated that residents may be precluded from seeking and obtaining services which are located in Calgary. A comparison between the services available in Airdrie and in other Alberta cities demonstrated that Airdrie residents are at a disadvantage with respect to the services available in their community. Support for expanding the current social service delivery system was demonstrated. Specifically, there was a need to provide residents with access to specialized counselling services. Support was also demonstrated for expanding bus service into Calgary and thereby making Calgary-based services more accessible to Airdrie residents.
Early rehabilitation after spinal cord injury : a scoping review protocol
Creators: name: Martinache, Florence
name: Foudhaïli, Adéla
name: Vigué, Bernard
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Physiotherapy
subject: Medicine and Health Sciences
subject: Medical Specialties
subject: Rehabilitation and Therapy
subject: Critical Care
subject: Neurology
subject: Physical Therapy
subject: Spinal cord injuries

description: Preclinical and clinical studies support the idea that early rehabilitation may be beneficial for patients with spinal cord injury (SCI). However, the timing and type of rehabilitation that should and could be used in the acute stage are still unclear. The objective of this scoping review is to identify which timings and types of early rehabilitation after spinal cord injuries (SCI) are documented in the literature, as well as identify possible research gaps in this field.
Analysis of Heart Diseases Dataset using Neural Network Approach
Creators: name: Rani, K. Usha
Publisher: name: arXiv
Year: 2011
Subjects: subject: Machine Learning (cs.LG)
subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: One of the important techniques of Data mining is Classification. Many real world problems in various fields such as business, science, industry and medicine can be solved by using classification approach. Neural Networks have emerged as an important tool for classification. The advantages of Neural Networks helps for efficient classification of given data. In this study a Heart diseases dataset is analyzed using Neural Network approach. To increase the efficiency of the classification process parallel approach is also adopted in the training phase.
description: 8 pages, 2 figures, 1 table; International Journal of Data Mining & Knowledge Management Process (IJDKP) Vol.1, No.5, September 2011
Large deviations of ergodic counting processes: a statistical mechanics approach
Creators: name: Budini, Adrian A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: The large-deviation method allows to characterize an ergodic counting process in terms of a thermodynamic frame where a free energy function determines the asymptotic non-stationary statistical properties of its fluctuations. Here, we study this formalism through a statistical mechanics approach, i.e., with an auxiliary counting process that maximizes an entropy function associated to the thermodynamic potential. We show that the realizations of this auxiliary process can be obtained after applying a conditional measurement scheme to the original ones, providing is this way an alternative measurement interpretation of the thermodynamic approach. General results are obtained for renewal counting processes, i.e., those where the time intervals between consecutive events are independent and defined by a unique waiting time distribution. The underlying statistical mechanics is controlled by the same waiting time distribution, rescaled by an exponential decay measured by the free energy function. A scale invariance, shift closure, and intermittence phenomena are obtained and interpreted in this context. Similar conclusions apply for non-renewal processes when the memory between successive events is induced by a stochastic waiting time distribution.
description: 12 pages, 4 figures
Limits to Ice on Asteroids (24) Themis and (65) Cybele
Creators: name: Jewitt, D.
name: Guilbert-Lepoutre, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present optical spectra of (24) Themis and (65) Cybele, two large main-belt asteroids on which exposed water ice has recently been reported. No emission lines, expected from resonance fluorescence in gas sublimated from the ice, were detected. Derived limits to the production rates of water are < 400 kg/s (5σ), for each object, assuming a cometary H2O/CN ratio. We rule out models in which a large fraction of the surface is occupied by high albedo ("fresh") water ice because the measured albedos of Themis and Cybele are low (0.05 - 0.07). We also rule out models in which a large fraction of the surface is occupied by low albedo ("dirty") water ice because dirty ice would be warm, and would sublimate strongly enough for gaseous products to have been detected. If ice exists on these bodies it must be relatively clean (albedo >0.3) and confined to a fraction of the Earth-facing surface <10%. By analogy with impacted asteroid (596) Scheila, we propose an impact excavation scenario, in which 10 m scale projectiles have exposed buried ice. If the ice is even more reflective (albedo >0.6) then the timescale for sublimation of an optically thick layer can rival the 10^3 yr interval between impacts with bodies this size. In this sense, exposure by impact may be a quasi steady-state feature of ice-containing asteroids at 3 AU.
A summary of the Rose Atoll Marine National Monument and American Samoa Archipelago ecosystem science implementation workshop Utulei, American Samoa May 26-27, 2015.
Creators: name: Oram, Risa
name: Johnson, Hoku
name: Ka'aekuahiwi, Hoku
name: Talamoa, Gataivai
Publisher: name: U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Pacific Islands Fisheries Science Center.
Year: 2016
Subjects: subject: Marine ecosystem management--American Samoa--Congresses.
subject: Marine ecology--American Samoa--Rose Atoll--Congresses.

description: The National Oceanic and Atmospheric Administration (NOAA), National Marine Fisheries Service (NMFS) Pacific Islands Fisheries Science Center (PIFSC) held a 2-day workshop in Utulei, American Samoa in May 2015, to gain insight from local scientists and managers on marine ecosystem and fisheries research needs within the American Samoa Archipelago. This information will be incorporated into a NOAA Fisheries Pacific Islands Fisheries Science Center American Samoa Marine Research Implementation Plan for 2017-2022. These plans aid PIFSC in identifying and prioritizing research activities. More than 60 people representing a broad spectrum of organizations in American Samoa, including resource managers, scientists, and local community members attended the workshop. Following a series of background presentations by scientists and others, workshop participants identified key topics for research that could be implemented in the next 5 years. They assembled a wide-ranging list of research priorities including threats to coral reefs from crown of thorns starfish (COTS) outbreaks, environmental contaminants, land-based nutrients, and coral bleaching; effectiveness of Marine Protected Areas (MPAs); larvae seeding/spillover; occurrence, location, and seasonality of spawning aggregations; mapping of shallow near-shore marine environments using LiDAR and other technologies; and more This report is a synthesis of the workshop information and findings and details the discussions, results and prioritization process. This information will be incorporated into a Rose Atoll Marine National Monument (RAMNM) and American Samoa Archipelago Ecosystem and Fisheries Science Action Plan which will be used to guide marine ecosystem and fisheries research planning across the American Samoa Archipelago.
Deformations of G2-structures with torsion
Creators: name: Grigorian, Sergey
Publisher: name: arXiv
Year: 2011
Subjects: subject: Differential Geometry (math.DG)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We consider non-infinitesimal deformations of G2-structures on 7-dimensional manifolds and derive an exact expression for the torsion of the deformed G2-structure. We then specialize to a case when the deformation is defined by a vector v and we explicitly derive the expressions for the different torsion components of the new G2-structure in terms of the old torsion components and derivatives of v. In particular this gives a set of differential equations for the vector v which have to be satisfied for a transition between G2-structures with particular torsions. For some specific torsion classes we find that these equations have no solutions.
description: 34 pages
A giant radio flare from Cygnus X-3 with associated Gamma-ray emission
Creators: name: Corbel, S.
name: Dubus, G.
name: Tomsick, J. A.
name: Szostek, A.
name: Corbet, R. H. D.
name: Miller-Jones, J. C. A.
name: Richards, J. L.
name: Pooley, G.
name: Trushkin, S.
name: Dubois, R.
name: Hill, A. B.
name: Kerr, M.
name: Max-Moerbeck, W.
name: Readhead, A. C. S.
name: Bodaghee, A.
name: Tudose, V.
name: Parent, D.
name: Wilms, J.
name: Pottschmidt, K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: With frequent flaring activity of its relativistic jets, Cygnus X-3 is one of the most active microquasars and is the only Galactic black hole candidate with confirmed high energy Gamma-ray emission, thanks to detections by Fermi/LAT and AGILE. In 2011, Cygnus X-3 was observed to transit to a soft X-ray state, which is known to be associated with high-energy Gamma-ray emission. We present the results of a multi-wavelength campaign covering a quenched state, when radio emission from Cygnus X-3 is at its weakest and the X-ray spectrum is very soft. A giant (~ 20 Jy) optically thin radio flare marks the end of the quenched state, accompanied by rising non-thermal hard X-rays. Fermi/LAT observations (E >100 MeV) reveal renewed Gamma-ray activity associated with this giant radio flare, suggesting a common origin for all non-thermal components. In addition, current observations unambiguously show that the Gamma-ray emission is not exclusively related to the rare giant radio flares. A 3-week period of Gamma-ray emission is also detected when Cygnus X-3 was weakly flaring in radio, right before transition to the radio quenched state. No Gamma rays are observed during the ~ one-month long quenched state, when the radio flux is weakest. Our results suggest transitions into and out of the ultrasoft X-ray (radio quenched) state trigger Gamma-ray emission, implying a connection to the accretion process, and also that the Gamma-ray activity is related to the level of radio flux (and possibly shock formation), strengthening the connection to the relativistic jets.
description: Accepted for publication in MNRAS. 10 pages 5 figures, 1 table
J. Quentin Hughes, The Building of Malta during the period of the Knights of St. John of Jerusalem 1530 - 1795
Creators: name: Lankheit, Klaus
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Rezension zu: J. Quentin Hughes, The Building of Malta during the period of the Knights of St. John of Jerusalem 1530 - 1795. London, Tiranti, 1956. 242 S. Text, 92 Strichzeichnungen im Text, 240 Abbildungen auf Tafeln. Pfd. St. 2, 2 sh.
description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 10 Nr. 9 (1957): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
A new spin on quantum cryptography: Avoiding trapdoors and embracing public keys
Creators: name: Ioannou, Lawrence M.
name: Mosca, Michele
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We give new arguments in support of \emph{signed quantum key establishment}, where quantum cryptography is used in a public-key infrastructure that provides the required authentication. We also analyze more thoroughly than previous works the benefits that quantum key establishment protocols have over certain classical protocols, motivated in part by the various objections to quantum key establishment that are sometimes raised. Previous knowledge of quantum cryptography on the reader's part is not required for this article, as the definition of "quantum key establishment" that we use is an entirely classical and black-box characterization (one need only trust that protocols satisfying the definition exist).
description: To appear in Proceedings of the Fourth International Conference on Post-Quantum Cryptography (PQCrypto 2011)
Adsorption and Thermodynamic Properties of Dissymmetric Gemini Imidazolium Surfactants with Different Spacer Length
Creators: name: Xiaohui Zhao
name: An, Dong
name: Zhiwen Ye
Publisher: name: Figshare
Year: 2016
Subjects: subject: Biophysics
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: A series of dissymmetric Gemini imidazolium surfactants with different spacer length ([CmCsCnim]Br2, m + n = 24, m = 12, 14, 16, 18; s = 2, 4, 6) were synthesized and characterized by 1H NMR and ESI-MS spectroscopy. Their adsorption and thermodynamic properties were investigated by the surface tension and electrical conductivity methods. Consequently, the surface active parameters (cmc, γcmc, πcmc, pC20, cmc/C20, Γmax, Amin) and thermodynamic parameters (, , ) were obtained. The effects of the dissymmetry (m/n) and the spacer length (s) on the surface activity and micellization process of surfactants have been discussed in detail.
L'Iconographie d'Antoine van Dyck
Creators: name: Boelcke, Catharina
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Rezension zu: L'Iconographie d'Antoine van Dyck. Catalogue raisonné par Marie Mauquoy-Hendricx. Académie royale de Belgique. Classe des Beaux-Arts. Mémoires, Collection in 8° - Tome IX 1956. Pg. 383, Planches 118, Reproduktion 190, Marques des Filigranes Nr. 350.
description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 10 Nr. 9 (1957): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
A mid-IR study of Hickson Compact Groups II. Multi-wavelength analysis of the complete GALEX-Spitzer Sample
Creators: name: Bitsakis, T.
name: Charmandaris, V.
name: da Cunha, E.
name: Diaz-Santos, T.
name: Floc'h, E. Le
name: Magdis, G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a comprehensive study on the impact of the environment of compact galaxy groups on the evolution of their members using a multi-wavelength analysis, from the UV to the infrared, for a sample of 32 Hickson compact groups (HCGs) containing 135 galaxies. Fitting the SEDs of all galaxies with the state-of-the-art model of da Cunha (2008) we can accurately calculate their mass, SFR, and extinction, as well as estimate their infrared luminosity and dust content. We compare our findings with samples of field galaxies, early-stage interacting pairs, and cluster galaxies with similar data. We find that classifying the groups as dynamically "old" or "young", depending on whether or not at least one quarter of their members are early-type systems, is physical and consistent with past classifications of HCGs based on their atomic gas content. [...ABRIDGED...] We also examine their SF properties, UV-optical and mid-IR colors, and we conclude that all the evidence point to an evolutionary scenario in which the effects of the group environment and the properties of the galaxy members are not instantaneous. Early on, the influence of close companions to group galaxies is similar to the one of galaxy pairs in the field. However, as the time progresses, the effects of tidal torques and minor merging, shape the morphology and star formation history of the group galaxies, leading to an increase of the fraction of early-type members and a rapid built up of the stellar mass in the remaining late-type galaxies.
description: Accepted for publication in A&A. Figure resolution degraded for arXiv limits, full resolution paper available at http://www.physics.uoc.gr/~bitsakis/paperII_bitsakis.pdf
Multi-wavelength GOALS Observations of Star Formation and Active Galactic Nucleus Activity in the Luminous Infrared Galaxy IC 883
Creators: name: Modica, F.
name: Vavilkin, T.
name: Evans, A. S.
name: Kim, D. C.
name: Mazzarella, J. M.
name: Iwasawa, K.
name: Petric, A.
name: Howell, J. H.
name: Surace, J. A.
name: Armus, L.
name: Spoon, H. W. W.
name: Sanders, D. B.
name: Barnes, J. E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: New optical HST, Spitzer, GALEX, and Chandra observations of the single-nucleus, luminous infrared galaxy (LIRG) merger IC 883 are presented. The galaxy is a member of the Great Observatories All-sky LIRG Survey (GOALS), and is of particular interest for a detailed examination of a luminous late-stage merger due to the richness of the optically-visible star clusters and the extended nature of the nuclear X-ray, mid-IR, CO and radio emission. In the HST ACS images, the galaxy is shown to contain 156 optically visible star clusters distributed throughout the nuclear regions and tidal tails of the merger, with a majority of visible clusters residing in an arc ~ 3-7 kpc from the position of the mid-infrared core of the galaxy. The luminosity functions of the clusters have an alpha_F435W ~ -2.17+/-0.22 and alpha_F814W ~ -2.01+/-0.21. Further, the colors and absolute magnitudes of the majority of the clusters are consistent with instantaneous burst population synthesis model ages in the range of a few x10^7 - 10^8 yrs (for 10^5 M_sun clusters), but may be as low as few x10^6 yrs with extinction factored in. The X-ray and mid-IR spectroscopy are indicative of predominantly starburst-produced nuclear emission, and the star formation rate is ~ 80 M_sun / yr. The kinematics of the CO emission and the morphology of both the CO and radio emission are consistent with the nuclear starburst being situated in a highly inclined disk 2 kpc in diameter with an infrared surface brightness mu_IR ~ 2x10^11 L_sun kpc^-2, a factor of 10 less than that of the Orion star-forming region. Finally, the detection of the [Ne V] 14.32 um emission line is evidence that an AGN is present. The faintness of the line (i.e., [Ne V] / [Ne II] um ~ 0.01) and the small equivalent width of the 6.2 um PAH feature ($= 0.39μ$m) are both indicative of a relatively weak AGN. (abridged)
description: 16 pages, 12 Figures. Accepted for publication in AJ
Clustering of random scale-free networks
Creators: name: Colomer-de-Simon, Pol
name: Boguna, Marian
Publisher: name: arXiv
Year: 2012
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We derive the finite size dependence of the clustering coefficient of scale-free random graphs generated by the configuration model with degree distribution exponent $2
Ausstellungskalender
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 10 Nr. 9 (1957): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Hierarchical Cellular Structures in High-Capacity Cellular Communication Systems
Creators: name: Jain, R. K.
name: Katiyar, Sumit
name: Agrawal, N. K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: In the prevailing cellular environment, it is important to provide the resources for the fluctuating traffic demand exactly in the place and at the time where and when they are needed. In this paper, we explored the ability of hierarchical cellular structures with inter layer reuse to increase the capacity of mobile communication network by applying total frequency hopping (T-FH) and adaptive frequency allocation (AFA) as a strategy to reuse the macro and micro cell resources without frequency planning in indoor pico cells [11]. The practical aspects for designing macro- micro cellular overlays in the existing big urban areas are also explained [4]. Femto cells are inducted in macro / micro / pico cells hierarchical structure to achieve the required QoS cost effectively.
description: 7 pages, 8 figures, International Journal
Inhalt III. Quartal 2020 / Aktuelle Ausstellungen / Impressum
Creators: name: Redaktion, Die
Publisher: name: KulturGut : aus der Forschung des Germanischen Nationalmuseums
Year: 2020

description: KulturGut : aus der Forschung des Germanischen Nationalmuseums, Nr. 66 (2020): KulturGut: aus der Forschung des Germanischen Nationalmuseums
Modeling and Validation of IAEA 3D PWR Benchmark Problem Using COMSOL Multiphysics Code
Creators: name: Islam, A.
name: R. Nushrat
name: T. A. Rahim
name: A.S. Mollah
Publisher: name: Zenodo
Year: 2019
Subjects: COMSOL Multiphysics, Keff, PWR, CFD

description: Accurate modeling and simulation of the different nuclear reactor phenomena require the integration of Multiphysics such as neutronics, reactor power, thermal hydraulics, and computational fluid dynamics (CFD) [2]. COMSOL Multiphysics provides an advanced tool to integrate these Multiphysics in the reactor's steady and transient state. The 3D light water reactor (LWR), also known as the 3D IAEA benchmark problem, was defined by B. Micheelsen in 1971. The primary goal of the 3D IAEA light water reactor benchmark problem is to validate nuclear computer codes by calculating the multiplication factor, neutron flux, and radial/axial power distributions using the two-group neutron diffusion method. A three-dimensional model has been developed using COMSOL Multiphysics to solve two-group neutron diffusion equations for the 3D IAEA PWR benchmark problem. An adaptive mesh refinement option has been used to increase the accuracy of the solution.
Publicly Releasing A Large Simulation Dataset
Creators: name: Goldbaum, Nathan J
Publisher: name: Zenodo
Year: 2016
Subjects: Python
Astronomy
Open Science
Reproducible Research

description: In this talk I describe my experience publicly releasing a large simulation dataset as part of the publication of my thesis. I describe the simulations, how to write reproducible analysis software, the process of publicly releasing the data, and useful value-adds of having the data publicly available.
Fast Hybrid PSO and Tabu Search Approach for Optimization of a Fuzzy Controller
Creators: name: Talbi, Nesrine
name: Belarbi, Khaled
Publisher: name: arXiv
Year: 2011
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, a fuzzy controller type Takagi_Sugeno zero order is optimized by the method of hybrid Particle Swarm Optimization (PSO) and Tabu Search (TS). The algorithm automatically adjusts the membership functions of fuzzy controller inputs and the conclusions of fuzzy rules. At each iteration of PSO, we calculate the best solution and we seek the best neighbor by Tabu search, this operation minimizes the number of iterations and computation time while maintaining accuracy and minimum response time. We apply this algorithm to optimize a fuzzy controller for a simple inverted pendulum with three rules.
description: 5 pages, 7 figures
Factors associated with the attendance at cultural events in Mexico during the covid-19 pandemic
Creators: name: Reyes-Martínez, Javier
name: Andrade-Guzmán, Carlos
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 111714 Mental Health
subject: FOS: Health sciences

description: During the COVID-19 pandemic, information concerning attendance at cultural activities and arts participation has not been fully explored. Thus, this manuscript aims to explore the factors related to attendance at cultural and artistic activities during the shutdown period. With that purpose, we use the 2018, 2019 and 2020 MODECULT datasets (n = 1994, n = 1978, n = 1663, respectively) to perform a logistic regression analysis. Results suggest that, during the COVID-19 pandemic, being young, high education attainment, interest in cultural activities, and being familiar with cultural and artistic activities are positively associated with attendance at plays, music performances, dance performances, exhibitions and movies. Contrary, availability of information, perception of prices, perception of free time and cultural offering near home show negative relationships with those same categories. These findings have relevant implications on cultural policies, regarding the aspects that affect culture and arts participation in crisis times.