cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Further Evidence of the Planetary Nature of HD 95086 b from Gemini/NICI H-band Data
Creators: name: Meshkat, T.
name: Bailey, V.
name: Rameau, J.
name: Bonnefoy, M.
name: Boccaletti, A.
name: Mamajek, E. E.
name: Kenworthy, M.
name: Chauvin, G.
name: Lagrange, A. -M.
name: Su, K. Y. L.
name: Currie, T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present our analysis of the Gemini/NICI H-band data of HD 95086, following the discovery of the planet HD 95086 b in L'. The H-band data reach a contrast of 12.7 mag relative to the host star at 5 sigma levels in the location of HD 95086 b, and no point source is found. Our non-detection and H-L' color limit rules out the possibility that the object is a foreground L/T dwarf and that, if it is bound to HD 95086, it is a genuine planetary mass object. We estimate a new pre-main-sequence isochronal age for HD 95086 of 17+/-4 Myr, which is commensurate with previous mean age estimates for the Lower Cen-Crux subgroup. Adopting an age of 17 Myr, the color limit is inconsistent with the COND model, marginally consistent with the BT-SETTL model, and consistent with the DUSTY model.
description: Accepted for publication in ApJL, 5 pages, 4 figures
TRATAMIENTO DE LIXIVIADOS DEL RELLENO SANITARIO”LA CORTADA” MUNICIPIO DE PAMPLONA MEDIANTE CONTACTORES BIOLOGICOS ROTATORIOS.pdf
Creators: name: Maldonado Maldonado, Julio
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 410306
subject: Environmental nanotechnology and nanometrology
classificationCode: 410304
subject: Environmental biotechnology diagnostics (incl. biosensors)

description: Rotating Biological Contactors (RBC) are aerobic processes with fixed attached mass for the treatment of wastewater, consisting of a series of discs that rotate around a horizontal axis, submerged between 40-45% of their area in water to be treated. inside a container, according to Romero. R, 2008, the surface organic load range at which they operate is between 12 g BOD/m2 day and 40 g BOD/m2 day. The unit where the research is carried out is on a laboratory scale and has 5 stages, each containing 12 disks, 9 disks, 8 disks, 8 disks and 8 disks respectively for a total of 45 disks, which rotate at a speed of 6 RPM, In addition, the Biodiscos unit has a settler at the beginning and another at the end of the unit. This type of biological treatment achieves removal of up to 80% efficiency in terms of BOD5 removal. This research is aimed at the operation of a CBR unit under ambient temperature conditions, at carrying out a bacteriological analysis of the biofilm generated in the unit and at determining the efficiency levels in terms of COD removal. At an experimental level, the laboratory-scale unit, inoculated, started, will operate and fed with characterized substrate, applying three different surface organic loads to the CBR until stable conditions are achieved in each stage, determining which of the stages in terms of surface organic load provides the greater efficiency, resulting in Surface Organic Load No. 2 (20 g BOD/m2 day) as the best assimilated, because it reported the highest efficiency of 71% in terms of COD. Keywords:Rotating Biological Contactors
Implementation of robust image artifact removal in SWarp through clipped mean stacking
Creators: name: Gruen, D.
name: Seitz, S.
name: Bernstein, G. M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We implement an algorithm for detecting and removing artifacts from astronomical images by means of outlier rejection during stacking. Our method is capable of addressing both small, highly significant artifacts such as cosmic rays and, by applying a filtering technique to generate single frame masks, larger area but lower surface brightness features such as secondary (ghost) images of bright stars. In contrast to the common method of building a median stack, the clipped or outlier-filtered mean stacked point-spread function (PSF) is a linear combination of the single frame PSFs as long as the latter are moderately homogeneous, a property of great importance for weak lensing shape measurement or model fitting photometry. In addition, it has superior noise properties, allowing a significant reduction in exposure time compared to median stacking. We make publicly available a modified version of SWarp that implements clipped mean stacking and software to generate single frame masks from the list of outlier pixels.
description: PASP accepted; software for download at http://www.usm.uni-muenchen.de/~dgruen/
Performance of Kepler GTX Titan GPUs and Xeon Phi System
Creators: name: Jeong, Hwancheol
name: Lee, Weonjong
name: Pak, Jeonghwan
name: Choi, Kwang-jong
name: Park, Sang-Hyun
name: Yoo, Jun-sik
name: Kim, Joo Hwan
name: Lee, Joungjin
name: Lee, Young Woo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: NVIDIA's new architecture, Kepler improves GPU's performance significantly with the new streaming multiprocessor SMX. Along with the performance, NVIDIA has also introduced many new technologies such as direct parallelism, hyper-Q and GPU Direct with RDMA. Apart from other usual GPUs, NVIDIA also released another Kepler 'GeForce' GPU named GTX Titan. GeForce GTX Titan is not only good for gaming but also good for high performance computing with CUDA. Nevertheless, it is remarkably cheaper than Kepler Tesla GPUs. We investigate the performance of GTX Titan and find out how to optimize a CUDA code appropriately for it. Meanwhile, Intel has launched its new many integrated core (MIC) system, Xeon Phi. A Xeon Phi coprocessor could provide similar performance with NVIDIA Kepler GPUs theoretically but, in reality, it turns out that its performance is significantly inferior to GTX Titan.
description: 7 pages, 6 figures, 3 tables, Contribution to proceedings of the 31st International Symposium on Lattice Field Theory (Lattice 2013), July 29 - August 3, 2013
Sustainable Materials and Construction Practices in Industrial Buildings
Creators: name: Mfon, Ifiok
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 410404
subject: Environmental management

description: The construction industry, a linchpin of modern society, faces increasing scrutiny due to its substantial environmental impact. Industrial buildings, pivotal in global supply chains, have historically contributed to environmental degradation through resource-intensive construction and operation. To address this, sustainable materials and construction practices offer a paradigm shift towards environmentally responsible building. This study delves into the critical domain of sustainable practices in industrial buildings, examining strategies to revolutionize the sector. Factors driving this surge in interest include climate change awareness, economic benefits, and technological advancements. The review underscores the importance of material selection, energy efficiency, regulatory frameworks, and technological innovations. While challenges persist, integrating sustainability principles holds the key to a resilient and efficient industrial building sector.
The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: mock galaxy catalogues for the low-redshift sample
Creators: name: Manera, Marc
name: Samushia, Lado
name: Tojeiro, Rita
name: Howlett, Cullan
name: Ross, Ashley J.
name: Percival, Will J.
name: Gil-Marín, Hector
name: Brownstein, Joel R.
name: Burden, Angela
name: Montesano, Francesco
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present one thousand mock galaxy catalogues for the analysis of the Low Redshift Sample (LOWZ, effective redshift z ~ 10.32) of the Baryon Oscillation Spectroscopic Survey Data Releases 10 and 11. These mocks have been created following the PTHalos method of Manera13 et al. (2013) revised to include new developments. The main improvement is the introduction of a redshift dependence in the Halo Occupation Distribution in order to account for the change of the galaxy number density with redshift. These mock catalogues are used in the analyses of the LOWZ galaxy clustering by the BOSS collaboration.
description: 10 pages, 8 figures
Cuts, Cancellations and the Closed Time Path: The Soft Leptogenesis Example
Creators: name: Garbrecht, Bjorn
name: Ramsey-Musolf, Michael J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: By including all leading quantum-statistical effects at finite temperature, we show that no net asymmetry of leptons and sleptons is generated from soft leptogenesis, save the possible contribution from the resonant mixing of sneutrinos. This result contrasts with different conclusions appearing in the literature that are based on an incomplete inclusion of quantum statistics. We discuss vertex and wave-function diagrams as well as all different possible kinematic cuts that nominally lead to CP-violating asymmetries. The present example of soft leptogenesis may therefore serve as a paradigm in order to identify more generally applicable caveats relevant to alternative scenarios for baryogenesis and leptogenesis, and it may provide useful guidance in constructing viable models.
description: 38 pages
Towards Characterizing IoT Software Update Practices
Creators: name: Bradley, Conner
name: Barrera, David
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: Software updates are critical for ensuring systems remain free of bugs and vulnerabilities while they are in service. While many Internet of Things (IoT) devices are capable of outlasting desktops and mobile phones, their software update practices are not yet well understood, despite a large body of research aiming to create new methodologies for keeping IoT devices up to date. This paper discusses efforts towards characterizing the IoT software update landscape through network-level analysis of IoT device traffic. Our results suggest that vendors do not currently follow security best practices, and that software update standards, while available, are not being deployed.
description: 17 pages, 4 figures
The Formation and Early Evolution of Young Massive Clusters
Creators: name: Longmore, Steven N.
name: Kruijssen, J. M. Diederik
name: Bastian, Nate
name: Bally, John
name: Rathborne, Jill
name: Testi, Leonardo
name: Stolte, Andrea
name: Dale, James
name: Bressert, Eli
name: Alves, Joao
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We review the formation and early evolution of the most massive and dense young stellar clusters, focusing on the role they can play in our understanding of star and planet formation as a whole. Young massive cluster (YMC) progenitor clouds in the Galactic Center can accumulate to a high enough density without forming stars that the initial protostellar densities are close to the final stellar density. For this to hold in the disk, the time scale to accumulate the gas to such high densities must be much shorter than the star formation timescale. Otherwise the gas begins forming stars while it is being accumulated to high density. The distinction between the formation regimes in the two environments is consistent with the predictions of environmentally-dependent density thresholds for star formation. This implies that stars in YMCs of similar total mass and radius can have formed at widely different initial protostellar densities. The fact that no systematic variations in fundamental properties are observed between YMCs in the disk and Galactic Center suggests stellar mass assembly is not strongly affected by the initial protostellar density. We review recent theoretical advances and summarize the debate on three key open questions: the initial (proto)stellar distribution, infant (im)mortality and age spreads within YMCs. We conclude: the initial protostellar distribution is likely hierarchical; YMCs likely experienced a formation history that was dominated by gas exhaustion rather than gas expulsion; YMCs are dynamically stable from a young age; and YMCs have age spreads much smaller than their mean age. Finally, we show that it is plausible that metal-rich globular clusters may have formed in a similar way to YMCs in nearby galaxies. In summary, the study of YMC formation bridges star/planet formation in the solar neighborhood to the oldest structures in the local Universe. [abridged]
description: 24 pages, 1 figure. Accepted for publication as a chapter in Protostars and Planets VI, University of Arizona Press (2014), eds. H. Beuther, R. Klessen, C. Dullemond, Th. Henning
Transport via double constrictions in integer and fractional topological insulators
Creators: name: Huang, Chia-Wei
name: Carr, Sam T.
name: Gutman, Dmitri
name: Shimshoni, Efrat
name: Mirlin, Alexander D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study transport properties of the helical edge states of two-dimensional integer and fractional topological insulators via double constrictions. Such constrictions couple the upper and lower edges of the sample, and can be made and tuned by adding side gates to the system. Using renormalization group and duality mapping, we analyze phase diagrams and transport properties in each of these cases. Most interesting is the case of two constrictions tuned to resonance, where we obtain Kondo behavior, with a tunable Kondo temperature. Moving away from resonance gives the possibility of a metal-insulator transition at some finite detuning. For integer topological insulators, this physics is predicted to occur for realistic interaction strengths and gives a conductance $G$ with two temperature $T$ scales where the sign of $dG/dT$ changes; one being related to the Kondo temperature while the other is related to the detuning.
H-matrix approximability of the inverses of FEM matrices
Creators: name: Faustmann, Markus
name: Melenk, Jens Markus
name: Praetorius, Dirk
Publisher: name: arXiv
Year: 2013
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We study the question of approximability for the inverse of the FEM stiffness matrix for (scalar) second order elliptic boundary value problems by blockwise low rank matrices such as those given by the H-matrix format. We show that exponential convergence in the local block rank can be achieved. We also show that exponentially accurate LU-decompositions in the H-matrix format are possible for the stiffness matrices arising in the FEM. Unlike prior works, our analysis avoids any coupling of the block rank r and the mesh width h and also covers mixed Dirichlet-Neumann-Robin boundary conditions.
description: 23 pages, 6 figures
Spectra of strong MHD Turbulence from high-resolution simulations
Creators: name: Beresnyak, Andrey
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Magnetohydrodynamic turbulence is a ubiquitous phenomenon in solar physics, plasma physics and astrophysics and governs many properties of the flows of well-conductive fluids. Recently, conflicting spectral slopes for the inertial range of MHD turbulence has been reported by different groups. Varying spectral shapes from earlier simulations hinted at a wider spectral locality of MHD, which necessitated higher resolution simulations and careful and rigorous numerical analysis. In this Letter we present two groups of simulations with resolution up to 4096^3 that are numerically well-resolved and has been analyzed with exact and well-tested method of scaling study. Our results from both simulation groups indicate that the power spectral slope for all energy-related quantities, such as total energy and residual energy are around -1.7, close to Kolmogorov's -5/3. This suggests that residual energy is the constant fraction, 0.15+-0.03 of the total energy and that in asymptotic regime magnetic and kinetic spectra have the same scaling. The -1.5 slope for energy and -2 slope for residual energy suggested by other groups seems to be completely inconsistent with numerics.
description: 4 pages, 3 figures
Intro to teaching lesson plan
Creators: name: Rossi, Virna
Publisher: name: National Teaching Repository
Year: 2024
Subjects: classificationCode: 390199
subject: Curriculum and pedagogy not elsewhere classified

description: A 'lesson plan to the bone' (template also shared on the NTR) filled in as an example of a lesson plan, for a 5 hour introduction to teaching day (a sort of academic onboarding).
ORKG data curation & user interaction survey
Creators: name: Jaradeh, Mohamad Yaser
name: Sören, Auer
name: Prinz, Manuel
name: Kovtun, Viktor
name: Kismihók, Gábor
name: Stocker, Markus
Publisher: name: Zenodo
Year: 2019
Subjects: Knowledge Graph
Open Research Knowledge Graph
Survey
User Interaction

description: Survey to study the user interaction with the ORKG system prototype
Higher Derivative Corrections to O-plane Actions: NS-NS Sector
Creators: name: Robbins, Daniel
name: Wang, Zhao
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We classify all possible two- and four-derivative couplings of bulk NS-NS sector fields to a single Op-plane which are compatible with diffeomorphism invariance and B-field gauge invariance. This is applicable to type IIA or IIB superstrings or to the bosonic string. We then consider this general action in various classes of backgrounds that admit a U(1) isometry and determine the constraints on the couplings from consistency with T-duality. We show that this consistency requires the two-derivative action to vanish, and the entire non-linear four-derivative action is fixed up to one overall constant which can be determined by comparison with a two-point scattering amplitude. The resulting action is consistent with all previously computed couplings.
description: 54 pages
Dynamics of a spherical object of uniform density in an expanding universe
Creators: name: Nandra, Roshina
name: Lasenby, Anthony
name: Hobson, Michael
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present Newtonian and fully general-relativistic solutions for the evolution of a spherical region of uniform interior density ρ_i(t), embedded in a background of uniform exterior density ρ_e(t). In both regions, the fluid is assumed to support pressure. In general, the expansion rates of the two regions, expressed in terms of interior and exterior Hubble parameters H_i(t) and H_e(t), respectively, are independent. We consider in detail two special cases: an object with a static boundary, H_i(t)=0; and an object whose internal Hubble parameter matches that of the background, H_i(t)=H_e(t). In the latter case, we also obtain fully general-relativistic expressions for the force required to keep a test particle at rest inside the object, and that required to keep a test particle on the moving boundary. We also derive a generalised form of the Oppenheimer-Volkov equation, valid for general time-dependent spherically-symmetric systems, which may be of interest in its own right.
description: 22 pages, 4 figures, submitted to PRD
Entrevista a Olaff Ludwing Durand Núñez. Orientación educativa para la preservación de la ecología peruana
Creators: name: Delgado Del Aguila, Jesús Miguel
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 310399
subject: Ecology not elsewhere classified

description: Delgado Del Aguila, Jesús Miguel (2023). «Entrevista a Olaff Ludwing Durand Núñez. Orientación educativa para la preservación de la ecología peruana», en: Argus-a. Artes & Humanidades. Buenos Aires, Argentina: Editorial Argus-a. Vol. XIII, n.° 49, septiembre, pp. 1-4. Disponible en https://argus-a.org/archivos-dinamicas/1731-1.pdf
FDM@OVGU (Eine kurze Einführung für die ReferentInnenrunde), Wissenschaftsmanagement
Creators: name: Strauch-Davey, Annette
Publisher: name: Zenodo
Year: 2022
Subjects: FDM
Forschungsdatenmanagement
RDM
Research Data Management
Data Stewards
Data Stewardship
Open Science

description: Seit dem 1. Oktober 2022 wird das Forschungsdatenmanagement für die Otto-von-Guericke Universität in Magdeburg in einer Gesamtstrategie weiterentwickelt. Außerdem wird an einem interdisziplinären „Data Stewardship“- Konzept gearbeitet. „Ziel ist es, hier an der OVGU sehr gute, den Forschungsprozess begleitende Angebote zum Forschungsdatenmanagement (FDM) für alle Wissenschaftlerinnen und Wissenschaftler zu schaffen, bereits Bestehendes kontinuierlich weiterzuentwickeln und dabei die operativen Angebote für die Wissenschaft bestmöglich zu koordinieren (...).“ https://www.ovgu.de/unimagdeburg_media/Organisation/NEWSLETTER/NL_11_2022_CONTENT/Forschungsdatenmanagement.pdf
Modern Ives-Stilwell Experiments At Storage Rings: Large Boosts Meet High Precision
Creators: name: Gwinner, G.
name: Botermann, B.
name: Geppert, C.
name: Huber, G.
name: Karpuk, S.
name: Krieger, A.
name: Nörtershäuser, W.
name: Novotny, C.
name: Kühl, T.
name: Sanchez, R.
name: Stöhlker, T.
name: Bing, D.
name: Schwalm, D.
name: Wolf, A.
name: Hänsch, T. W.
name: Reinhardt, S.
name: Saathoff, G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We give a brief overview of time dilation tests using high-resolution laser spectroscopy at heavy-ion storage rings. We reflect on the various methods used to eliminate the first-order Doppler effect and on the pitfalls encountered, and comment on possible extensions at future facilities providing relativistic heavy ion beams at $γ\gg 1$.
description: Presented at the Sixth Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, June 17-21, 2013
title: Selective autophagy regulates heat stress memory in Arabidopsis by NBR1-mediated targeting of HSP90.1 and ROF1
Creators: name: Thirumalaikumar, Venkatesh P.
name: Gorka, Michal
name: Schulz, Karina
name: Masclaux-Daubresse, Celine
name: Sampathkumar, Arun
name: Skirycz, Aleksandra
name: Vierstra, Richard D.
name: Balazadeh, Salma
Publisher: name: Universität Potsdam
Year: 2024
Subjects: subject: 580 Pflanzen (Botanik)

description: In nature, plants are constantly exposed to many transient, but recurring, stresses. Thus, to complete their life cycles, plants require a dynamic balance between capacities to recover following cessation of stress and maintenance of stress memory. Recently, we uncovered a new functional role for macroautophagy/autophagy in regulating recovery from heat stress (HS) and resetting cellular memory of HS inArabidopsis thaliana. Here, we demonstrated that NBR1 (next to BRCA1 gene 1) plays a crucial role as a receptor for selective autophagy during recovery from HS. Immunoblot analysis and confocal microscopy revealed that levels of the NBR1 protein, NBR1-labeled puncta, and NBR1 activity are all higher during the HS recovery phase than before. Co-immunoprecipitation analysis of proteins interacting with NBR1 and comparative proteomic analysis of annbr1-null mutant and wild-type plants identified 58 proteins as potential novel targets of NBR1. Cellular, biochemical and functional genetic studies confirmed that NBR1 interacts with HSP90.1 (heat shock protein 90.1) and ROF1 (rotamase FKBP 1), a member of the FKBP family, and mediates their degradation by autophagy, which represses the response to HS by attenuating the expression ofHSPgenes regulated by the HSFA2 transcription factor. Accordingly, loss-of-function mutation ofNBR1resulted in a stronger HS memory phenotype. Together, our results provide new insights into the mechanistic principles by which autophagy regulates plant response to recurrent HS.
description: Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe; 1343
Configuración hispánica de los conceptos de utopía y anarquía en la Literatura. Entrevista a Rocío Hernández Arias
Creators: name: Delgado Del Aguila, Jesús Miguel
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 470207
subject: Cultural theory

description: Delgado Del Aguila, Jesús Miguel (2023). «Configuración hispánica de los conceptos de utopía y anarquía en la Literatura. Entrevista a Rocío Hernández Arias», en: Frontería. Revista do Programa de Pós-Graduação em Literatura Comparada. Foz do Iguaçu, Brasil: Universidade Federal da Integração Latino-americana. Vol. 4, n.° 1, enero-julio, pp. 156-166. Disponible en https://revistas.unila.edu.br/litcomparada/article/view/3906
Classification and environmental properties of X-ray selected point-like sources in the XMM-LSS field
Creators: name: Melnyk, O.
name: Plionis, M.
name: Elyiv, A.
name: Salvato, M.
name: Chiappetti, L.
name: Clerc, N.
name: Gandhi, P.
name: Pierre, M.
name: Sadibekova, T.
name: Pospieszalska-Surdej, A.
name: Surdej, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The XMM-Large Scale Structure survey, covering an area of 11.1 sq. deg., contains more than 6000 X-ray point-like sources detected with XMM-Newton down to a flux of 3x10^-15 erg s^-1 cm^-2 in the [0.5-2] keV band, the vast majority of which have optical (CFHTLS), infrared (SWIRE), near-infrared (UKIDSS) and/or ultraviolet (GALEX) counterparts. We wish to investigate the environmental properties of the different types of the XMM-LSS X-ray sources, defining their environment using the i-band CFHTLS W1 catalog of optical galaxies down to a magnitude limit of 23.5 mag. We have classified 4435 X-ray selected sources on the basis of their spectra, SEDs and X-ray luminosity and estimated their photometric redshifts, having 4-11 band photometry, with an accuracy sigma=0.076 and 22.6% outliers for i<26 mag. We estimated the local overdensities of 777 X-ray sources which have spectro-z or photo-z calculated using more than 7 bands (accuracy sigma=0.061 with 13.8% outliers) within the volume-limited region defined by 0.1=-0.2) are located in more overdense regions with respect to the Soft AGN (HR1.5) within which Soft AGN are embedded appear to evolve more rapidly with respect to the corresponding overdensities around Hard AGN.
description: 14 pages, 16 figures, 5 tables, Accepted for publication in Astronomy & Astrophysics
A catalogue of bright (K < 9) M dwarfs
Creators: name: Frith, J.
name: Pinfield, D. J.
name: Jones, H. R. A.
name: Barnes, J. R.
name: Pavlenko, Y.
name: Martin, E. L.
name: Brown, C.
name: Kuznetsov, M. K.
name: Marocco, F.
name: Tata, R.
name: Cappetta, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Using the Position and Proper Motion Extended-L (PPMXL) catalogue, we have used optical and near-infrared colour cuts together with a reduced proper motion cut to find bright M dwarfs for future exoplanet transit studies. PPMXL's low proper motion uncertainties allow us to probe down to smaller proper motions than previous similar studies. We have combined unique objects found with this method to that of previous work to produce 8479 K<9 M dwarfs. Low resolution spectroscopy was obtained of a sample of the objects found using this selection method to gain statistics on their spectral type and physical properties. Results show a spectral type range of K7-M4V. This catalogue is the most complete collection of K<9 M dwarfs currently available and is made available here.
Nonparametric reconstruction of the cosmic expansion with local regression smoothing and simulation extrapolation
Creators: name: Montiel, Ariadna
name: Lazkoz, Ruth
name: Sendra, Irene
name: Escamilla-Rivera, Celia
name: Salzano, Vincenzo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In this work we present a nonparametric approach, which works on minimal assumptions, to reconstruct the cosmic expansion of the Universe. We propose to combine a locally weighted scatterplot smoothing method and a simulation-extrapolation method. The first one (Loess) is a nonparametric approach that allows to obtain smoothed curves with no prior knowledge of the functional relationship between variables nor of the cosmological quantities. The second one (Simex) takes into account the effect of measurement errors on a variable via a simulation process. For the reconstructions we use as raw data the Union2.1 Type Ia Supernovae compilation, as well as recent Hubble parameter measurements. This work aims to illustrate the approach, which turns out to be a self-sufficient technique in the sense we do not have to choose anything by hand. We examine the details of the method, among them the amount of observational data needed to perform the locally weighted fit which will define the robustness of our reconstruction. In view of our results, we believe that our proposal offers a promising alternative for reconstructing global trends of cosmological data when there is little intuition on the relationship between the variables and we also think it even presents good prospects to generate reliable mock data points where the original sample is poor.
description: 13 pages, 6 figures, 2 tables; accepted in Phys. Rev. D
Adiabatic quantum optimization with the wrong Hamiltonian
Creators: name: Young, Kevin C.
name: Blume-Kohout, Robin
name: Lidar, Daniel A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Analog models of quantum information processing, such as adiabatic quantum computation and analog quantum simulation, require the ability to subject a system to precisely specified Hamiltonians. Unfortunately, the hardware used to implement these Hamiltonians will be imperfect and limited in its precision. Even small perturbations and imprecisions can have profound effects on the nature of the ground state. Here we consider an imperfect implementation of adiabatic quantum optimization and show that, for a widely applicable random control noise model, quantum stabilizer encodings are able to reduce the effective noise magnitude and thus improve the likelihood of a successful computation or simulation. This reduction builds upon two design principles: summation of equivalent logical operators to increase the energy scale of the encoded optimization problem, and the inclusion of a penalty term comprising the sum of the code stabilizer elements. We illustrate our findings with an Ising ladder and show that classical repetition coding drastically increases the probability that the ground state of a perturbed model is decodable to that of the unperturbed model, while using only realistic two-body interaction. Finally, we note that the repetition encoding is a special case of quantum stabilizer encodings, and show that this in principle allows us to generalize our results to many types of analog quantum information processing, albeit at the expense of many-body interactions.
description: 8 pages, 4 figures
ArNLI: Arabic Natural Language Inference for Entailment and Contradiction Detection
Creators: name: Jallad, Khloud Al
name: Ghneim, Nada
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Natural Language Inference (NLI) is a hot topic research in natural language processing, contradiction detection between sentences is a special case of NLI. This is considered a difficult NLP task which has a big influence when added as a component in many NLP applications, such as Question Answering Systems, text Summarization. Arabic Language is one of the most challenging low-resources languages in detecting contradictions due to its rich lexical, semantics ambiguity. We have created a data set of more than 12k sentences and named ArNLI, that will be publicly available. Moreover, we have applied a new model inspired by Stanford contradiction detection proposed solutions on English language. We proposed an approach to detect contradictions between pairs of sentences in Arabic language using contradiction vector combined with language model vector as an input to machine learning model. We analyzed results of different traditional machine learning classifiers and compared their results on our created data set (ArNLI) and on an automatic translation of both PHEME, SICK English data sets. Best results achieved using Random Forest classifier with an accuracy of 99%, 60%, 75% on PHEME, SICK and ArNLI respectively.
Maternal risk factors for prematurity related neonatal mortality among preterm neonates admitted to Neonatal Intensive Care Unit of selected referral Hospitals in Addis Ababa, Ethiopia
Creators: name: Dirreba Gemeda
Publisher: name: Zenodo
Year: 2017

description: Background: The neonatal period is considered high risk period in terms of mortality. Globally, approximately 15 million infants are born prematurely each year, which is more than one tenth of all newborn infants. Mortality due to complications of prematurity is the leading cause of neonatal and children under five age death. Little is known about specific maternal risk factors for prematurity related neonate mortality.

Objective: The aim of the proposed study was to identify risk factors for prematurity related neonate mortality.

Methods: A facility based nested unmatched case control study design was employed to identify maternal risk factors for prematurity related neonatal mortality. Cases were preterm neonates who died and controls were preterm neonates who survived 28 days of neonatal period among those admitted to NICU ward. The study was conducted from July 25, 2016 to May 29, 2017 at neonatal intensive care units of three Referral hospitals in Addis Ababa city. The total sample size was 471 with 157 cases and 314 controls. Data was entered using Epi Info 7 and analyzed by STATA 12. Bivariate and multivariate logistic regression models were applied to measure the associations between the prematurity related mortality and maternal risk factors.
« Ezpeleta y su chile. Patrimonialización, valorización económica y desarrollo local en una comarca del País Vasco Francés. », in M. Álvarez y F. X. Medina (ed.), Identidades en el plato. El patrimonio cultural alimentario entre Europa y América, Barcelona, Icaria, 2008, pp. 81-95.
Creators: name: Duhart, Frédéric
Publisher: name: Zenodo
Year: 2008
Subjects: Anthropology of food
Basqueland
Capsicum annuum
PDO
Heritage
Basque Cuisine
Spice

description: En 2000, el chile/pimiento de Ezpeleta obtuvo una Denominación de Origen Protegida. Este reconocimiento vino después de más de treinta años de acciones para valorizar y para patrimonializar el chile local. Desde la obtención de su denominación, gracias a varias acciones de promoción, el chile de Ezpeleta está mucho de moda en Francia. Lo que estaba, hace treinta años, casi exclusivamente un producto de huerta familial se cambia hoy en un cultivo atractivo y remunerador. En la comarca de Ezpeleta, el chile tradicional aparece como una solución para desarrollar una agricultura alternativa cuando el policultivo clásico del País Vasco está en crisis. En relación con el chile, es toda una economía local, una micro industria agro-alimenticia sino también actividades de turismo, que se desarrollan. Claro, eso no se produce sin tensiones. El chile además de aparecer como un elemento clave del porvenir económico de la comarca, se afirma como un objeto identidario.

Por todas estas razones, el chile de Ezpeleta constituye un producto muy interesante en el marco de una reflexión sobre los usos del patrimonio alimenticio en una estrategia local de desarrollo sostenible. Además, el chile de Ezpeleta ofrece un ejemplo interesante de adaptación de un producto tradicional a un nuevo ambiente cultural, a nuevos mercados. Aquí, los promotores del chile tuvieron que desarrollar una verdadera pedagogía alrededor de un producto que tenía la fama de ser demasiado picante para un paladar francés.
On the slice-ribbon conjecture for pretzel knots
Creators: name: Lecuona, Ana G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: We give a necessary, and in some cases sufficient, condition for sliceness inside the family of pretzel knots $P (p_1,...,p_n)$ with one $p_i$ even. The three stranded case yields two interesting families of examples: the first consists of knots for which the non-sliceness is detected by the Alexander polynomial while several modern obstructions to sliceness vanish. The second family has the property that the correction terms from Heegaard-Floer homology of the double branched covers of these knots do not obstruct the existence of a rational homology ball; however, the Casson-Gordon invariants show that the double branched covers do not bound rational homology balls.
description: 30 pages, 10 figures
The Black Hole Binary V4641 Sagitarii: Activity in Quiescence & Improved Mass Determinations
Creators: name: MacDonald, Rachel K. D.
name: Bailyn, Charles D.
name: Buxton, Michelle
name: Cantrell, Andrew G.
name: Chatterjee, Ritaban
name: Kennedy-Shaffer, Ross
name: Orosz, Jerome A.
name: Markwardt, Craig B.
name: Swank, Jean H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We examine ~10 years of photometric data and find that the black hole X-ray binary V4641 Sgr has two optical states, passive and active, during X-ray quiescence. The passive state is dominated by ellipsoidal variations and is stable in the shape and variability of the light curve. The active state is brighter and more variable. Emission during the active state varies over the course of the orbital period and is redder than the companion star. These optical/infrared states last for weeks or months. V4641 Sgr spends approximately 85% of X-ray quiescence in the passive state and 15% in the active. We analyze passive colors and spectroscopy of V4641 Sgr and show that they are consistent with a reddened B9III star (with E(B-V) = 0.37 +/- 0.19) with little or no contribution from the accretion disk. We use X-ray observations with an updated ephemeris to place an upper limit on the duration of an X-ray eclipse of <8.3 deg in phase (~1.6 hours). High resolution spectroscopy yields a greatly improved measurement of the rotational velocity of the companion star of V_rot_sin(i) = 100.9 +/- 0.8 km s^-1. We fit ellipsoidal models to the passive state data and find an inclination angle of i = 72.3 +/- 4.1 deg, a mass ratio of Q = 2.2 +/- 0.2, and component masses for the system of M_BH = 6.4 +/- 0.6 M_sun and M_2 = 2.9 +/- 0.4 M_sun. Using these values we calculate an updated distance to V4641 Sgr of 6.2 +/- 0.7 kpc.
description: 21 pages, 16 figures, 7 tables. Accepted by Astrophysical Journal
Tabletop potentials for inflation from $f(R)$ gravity
Creators: name: Shtanov, Yuri
name: Sahni, Varun
name: Mishra, Swagat S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that a large class of modified gravity theories (MOG) with the Jordan-frame Lagrangian $f(R)$ translate into scalar-field (scalaron) models with hilltop potentials in the Einstein frame. (A rare exception to this rule is provided by the Starobinsky model for which the corresponding scalaron potential is plateau-like for $ϕ> 0$.) We find that MOG models featuring two distinct mass scales lead to scalaron potentials that have a flattened hilltop, or tabletop. Inflationary evolution in tabletop models agrees very well with CMB observations. Tabletop potentials therefore provide a new and compelling class of MOG-based inflationary models. By contrast, MOG models with a single mass scale generally correspond to steep hilltop potentials and fail to reproduce the CMB power spectrum. Inflationary evolution in hilltop/tabletop models can proceed in two alternative directions: towards the stable point at small $R$ describing the observable universe, or towards the asymptotic region at large $R$. The MOG models which we examine have several new properties including the fact that gravity can become asymptotically vanishing, with $G_{\rm eff} \to 0$, at infinite or large finite values of the scalar curvature $R$. A universe evolving towards the asymptotically vanishing gravity region at large $R$ will either run into a 'Big-Rip' singularity, or inflate eternally.
description: 35 pages, 11 figures, revised version, some clarifications and additional references, matches published version in JCAP
Long-Term Multiwavelength Studies of High-Redshift Blazar 0836+710
Creators: name: Akyuz, A.
name: Thompson, D. J.
name: Donato, D.
name: Perkins, J. S.
name: Fuhrmann, L.
name: Angelakis, E.
name: Zensus, J. A.
name: Larsson, S.
name: Sokolovsky, K.
name: Kurtanidze, O.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Aims. The observation of gamma -ray flares from blazar 0836+710 in 2011, following a period of quiescence, offered an opportunity to study correlated activity at different wavelengths for a high-redshift (z=2.218) active galactic nucleus. Methods. Optical and radio monitoring, plus Fermi-LAT gamma-ray monitoring provided 2008-2012 coverage, while Swift offered auxiliary optical, ultraviolet, and X-ray information. Other contemporaneous observations were used to construct a broad-band spectral energy distribution. Results. There is evidence of correlation but not a measurable lag between the optical and gamma-ray flaring emission. On the contrary, there is no clear correlation between radio and gamma-ray activity, indicating radio emission regions that are unrelated to the parts of the jet that produce the gamma-rays. The gamma-ray energy spectrum is unusual in showing a change of shape from a power law to a curved spectrum when going from the quiescent state to the active state.
description: 11 pages, 10 figures, Accepted for publication in A&A
Synthetic Observations of the Evolution of Starless Cores in a Molecular Cloud Simulation: Comparisons with JCMT Data and Predictions for ALMA
Creators: name: Mairs, Steve
name: Johnstone, Doug
name: Offner, Stella S. R.
name: Schnee, Scott
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Interpreting the nature of starless cores has been a prominent goal in star formation for many years. In order to characterise the evolutionary stages of these objects, we perform synthetic observations of a numerical simulation of a turbulent molecular cloud. We find that nearly all cores that we detect are associated with filaments and eventually form protostars. We conclude that observed starless cores which appear Jeans unstable are only marginally larger than their respective Jeans masses (within a factor of 3). We note single dish observations such as those performed with the JCMT appear to miss significant core structure on small scales due to beam averaging. Finally, we predict that interferometric observations with ALMA Cycle 1 will resolve the important small scale structure, which has so far been missed by mm-wavelength observations.
description: 15 pages, 9 Figures, Accepted to The Astrophysical Journal
Inverse optical imaging viewed as a backward channel communication problem
Creators: name: De Micheli, Enrico
name: Viano, Giovanni Alberto
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 94A05, 94A15, 65R10

description: The inverse problem in optics, which is closely related to the classical question of the resolving power, is reconsidered as a communication channel problem. The main result is the evaluation of the maximum number $M_ε$ of $ε$-distinguishable messages ($ε$ being a bound on the noise of the image) which can be conveyed back from the image to reconstruct the object. We study the case of coherent illumination. By using the concept of Kolmogorov's $ε$-capacity, we obtain: $M_ε~ 2^{S \log(1/ε)} \to \infty$ as $ε\to 0$, where S is the Shannon number. Moreover, we show that the $ε$-capacity in inverse optical imaging is nearly equal to the amount of information on the object which is contained in the image. We thus compare the results obtained through the classical information theory, which is based on the probability theory, with those derived from a form of topological information theory, based on Kolmogorov's $ε$-entropy and $ε$-capacity, which are concepts related to the evaluation of the massiveness of compact sets.
description: 18 pages, 2 figures
Counting Conjugacy Classes of Elements of Finite Order in Lie Groups
Creators: name: Friedmann, Tamar
name: Stanley, Richard P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Using combinatorial techniques, we answer two questions about simple classical Lie groups. Define $N(G,m)$ to be the number of conjugacy classes of elements of finite order $m$ in a Lie group $G$, and $N(G,m,s)$ to be the number of such classes whose elements have $s$ distinct eigenvalues or conjugate pairs of eigenvalues. What is $N(G,m)$ for $G$ a unitary, orthogonal, or symplectic group? What is $N(G,m,s)$ for these groups? For some cases, the first question was answered a few decades ago via group-theoretic techniques. It appears that the second question has not been asked before; here it is inspired by questions related to enumeration of vacua in string theory. Our combinatorial methods allow us to answer both questions.
description: 16 pages
Maximal mixing by incompressible fluid flows
Creators: name: Seis, Christian
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We consider a model for mixing binary viscous fluids under an incompressible flow. We proof the impossibility of perfect mixing in finite time for flows with finite viscous dissipation. As measures of mixedness we consider a Monge--Kantorovich--Rubinstein transportation distance and, more classically, the $H^{-1}$ norm. We derive rigorous a priori lower bounds on these mixing norms which show that mixing cannot proceed faster than exponentially in time. The rate of the exponential decay is uniform in the initial data.