cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
MATHICSE Technical Report: Numerical homogenization method for parabolic advection-diffusion multiscale problems with large compressible flows
Creators: name: Abdulle, Assyr
name: Huber, Martin
Publisher: name: Écublens, MATHICSE
Year: 2020

description: We introduce a numerical homogenization method based on a discontinuous Galerkin finite element heterogeneous multiscale method (DG-HMM) to efficiently approximate the effective solution of parabolic advection-diffusion problems with rapidly varying coefficients, large Péclet number and compressible flows. To estimate the missing data of an effective model, numerical upscaling is performed which accurately captures the effects of microscopic solenoidal or gradient flow at a macroscopic scale such as enhancement or depletion of the effective diffusion. For compressible flow with periodic data, we derive sharp a priori error estimates for the macro and micro discretization errors which are robust in the advection dominated regime. Numerical tests confirm the error estimates for problems with periodic data and illustrate the applicability of our method for problems with non-periodic data.
Innovative Green Synthesis of 4-Aryl-Pyrazolo[5,6]Pyrano [2,3-d]Pyrimidines under Catalyst-Free Conditions
Creators: name: Rathinam Ramesh
name: Velmurugan Tamilselvi
name: Pullar Vadivel
name: Appaswami Lalitha
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences

description: A clean, cost-effective and practical approach has been described for the convenient synthesis of a library of 4-aryl-pyrazolo[5,6]pyrano[2,3-d]pyrimidines starting from a four-component condensation of ethyl acetoacetate, hydrazine hydrate, aromatic aldehydes, and barbituric/thiobarbituric acid in catalyst-free aqueous ethanol system. The reactions were assisted by water, there by leading to the development of ‘water chemistry’ providing the products in good yields in shorter reaction times. Environmental benignity, neutral reaction conditions, wide range of functional group tolerance, facile experimental and work-up procedures are the prominent features of this greener protocol.
MATHICSE Technical Report: Fast recovery and approximation of hidden Cauchy structure
Creators: name: Liesen, Jörg
Publisher: name: Écublens, MATHICSE
Year: 2020

description: We derive an algorithm of optimal complexity which determines whether a given matrix is a Cauchy matrix, and which exactly recovers the Cauchy points defining a Cauchy matrix from the matrix entries. Moreover, we study how to approximate a given matrix by a Cauchy matrix with a particular focus on the recovery of Cauchy points from noisy data. We derive an approximation algorithm of optimal complexity for this task, and prove approximation bounds. Numerical examples illustrate our theoretical results.
MATHICSE Technical Report: An optimization based coupling method for multiscale problems
Creators: name: Abdulle, Assyr
name: Jecker, Orane
name: Shapeev, Alexander
Publisher: name: Écublens, MATHICSE
Year: 2020

description: A new multiscale coupling method is proposed for elliptic problems with highly oscillatory coefficients with a continuum of scales in a subset of the computational domain and scale separation in complementary regions of the computational domain. A discontinuous Galerkin (DG) finite element heterogeneous multiscale method (FE-HMM) isused in the region with scale separation while a continuous standard finite element method is used in the region without scale separation. The use of a DG FE-HMM method allows for a flexible meshing of the different models in the overlapping region. The unknown boundary conditions at the interfaces are obtained by minimizing the error of the two models in the overlap region. We prove the well-posedness of both the continuous and discrete coupling problems and establish convergence of the multiscale method towards the fine scale solution. As in the region with scale separation we obtain an approximation at a cost independent of the smallest scale in the problem, the computational cost of the multiscale method is significantly smaller than a fine scale solver over the whole computational domain, while the algorithm allows to treat situation for which standard numerical homogenization methods do not apply.
MATHICSE Technical Report : Frequency-domain non-intrusive greedy Model Order Reduction based on minimal rational approximation
Creators: name: Pradovera, Davide
name: Nobile, Fabio
Publisher: name: Ecublens, MATHICSE
Year: 2020

description: We present a technique for Model Order Reduction (MOR) of frequency-domain problems relying on rational interpolation of vector-valued functions. The selection of the sample points is carried out adaptively according to a greedy procedure. We describe several options for the choice of a posteriori error indicators, which are used to drive the greedy algorithm and define its termination condition. Namely, we illustrate a tradeoff between each estimator’s accuracy and its “intrusiveness”, i.e. how much information on the underlying high-fidelity model needs to be available. We test numerically the effectiveness of this technique in solving a non-Hermitian eigenproblem and a microwave frequency response analysis.
COMPREHENSIVE ANALYSIS OF A CULTURAL DEPOSIT BEHIND THE CHARLES WONG BAKERY, LEVUKA, FIJI
Creators: name: Cummings, Linda Scott
name: Yost, Chad
name: Puseman, Kathryn
Year: 2008
Subjects: subject: Fiji (Country)
valueUri: https://core.tdar.org/browse/geographic-keyword/81311/fiji-country
subject: Island of Ovalau
valueUri: https://core.tdar.org/browse/geographic-keyword/84682/island-of-ovalau
subject: Ovalau
valueUri: https://core.tdar.org/browse/geographic-keyword/84681/ovalau
subject: Fijian Archipelago
valueUri: https://core.tdar.org/browse/geographic-keyword/84683/fijian-archipelago
subject: Historic
valueUri: https://core.tdar.org/browse/temporal-keyword/5728/historic
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Charlie Wong’s house
valueUri: https://core.tdar.org/browse/site-name/108250/charlie-wongs-house
subject: Midden
valueUri: https://core.tdar.org/browse/material-type/2247/midden
subject: Macrobotanical
valueUri: https://core.tdar.org/browse/material-type/10/macrobotanical
subject: Starch Analysis
valueUri: https://core.tdar.org/browse/other-keyword/135583/starch-analysis
subject: Protein Residue Analysis
valueUri: https://core.tdar.org/browse/other-keyword/19426/protein-residue-analysis
subject: Pollen Analysis
valueUri: https://core.tdar.org/browse/other-keyword/3351/pollen-analysis
subject: 08-128
valueUri: https://core.tdar.org/browse/other-keyword/162117/08-128
subject: Phytolith Analysis
valueUri: https://core.tdar.org/browse/other-keyword/872/phytolith-analysis
subject: CIEP Analysis
valueUri: https://core.tdar.org/browse/other-keyword/145638/ciep-analysis
subject: 07-093
valueUri: https://core.tdar.org/browse/other-keyword/162118/07-093
subject: FTIR Analysis
valueUri: https://core.tdar.org/browse/other-keyword/136972/ftir-analysis
subject: organic residue analysis
valueUri: https://core.tdar.org/browse/other-keyword/125787/organic-residue-analysis
subject: Data Recovery / Excavation
valueUri: https://core.tdar.org/browse/investigation-type/5/data-recovery-excavation

description: A Chinese bakery was built in the 1920s on fill that enlarged the narrow strip of land on the southeast side of the Island of Ovalau in the Fijian Archipelago, on which much of the town of Levuka is built. Since the beach was narrow in this area, many of the first commercial structures were built on fill. The bakery is located to the north of Charlie Wong’s house. Cultural deposits that appear to represent a midden behind the house, excavated in 2007, were examined to identify likely local vegetation at the time they accumulated, which is assumed to be associated with use of this bakery during the 1920s, when it was built. This date of occupation is substantiated by artifacts recovered at the site. Pollen, phytolith, starch, macrofloral, protein residue, and FTIR analyses were conducted on fill from Test Units 1 (2007) and 2 (2008), which represent the midden associated with the house. Both samples, collected approximately 40 cm apart, represent deposits originating between 1920 and 1930.
Initial experimental tests, setups, discussions and challenges for OSB connections
Creators: name: Rezaei Rad, Aryan
name: Gamerro, Julien
name: Ghion, Geoffroy
name: Weinand, Yves
Publisher: name: École Polytechnique Fédérale de Lausanne
Year: 2020

description: In order to fulfill all design requirements for a project, some experimental tests as well as numerical investigations has been conducted. The main intention of the current report is to give an insight into the experimental tests which we expected to get the maximum slip modulus by considering a combination of different and possible nailing distance, nailing positions, and tenon-like wood-wood connections. In the following sections, a detailed description of test setups as well as experimental results and a brief discussion upon the outcomes are presented. As the main objective of this step, we were seeking the maximum slip modulus which can be obtained, however, elaborating on the technical drawings including construction fabrications in the precambering case as well as mechanical Finite Element model is an issue which can be discussed as the next step.
Innovative Green Synthesis of 4-Aryl-Pyrazolo[5,6]Pyrano[2,3-d]Pyrimidines under Catalyst-Free Conditions
Creators: name: Rathinam Ramesh
name: Velmurugan Tamilselvi
name: Pullar Vadivel
name: Appaswami Lalitha
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences

description: A clean, cost-effective and practical approach has been described for the convenient synthesis of a library of 4-aryl-pyrazolo[5,6]pyrano[2,3-d]pyrimidines starting from a four-component condensation of ethyl acetoacetate, hydrazine hydrate, aromatic aldehydes, and barbituric/thiobarbituric acid in catalyst-free aqueous ethanol system. The reactions were assisted by water, there by leading to the development of ‘water chemistry’ providing the products in good yields in shorter reaction times. Environmental benignity, neutral reaction conditions, wide range of functional group tolerance, facile experimental and work-up procedures are the prominent features of this greener protocol.
MATHICSE Technical Report : Generalized Parallel Tempering on Bayesian Inverse Problems
Creators: name: Latz, Jonas
name: Madrigal Cianci, Juan Pablo
name: Nobile, Fabio
name: Tempone, Raul
Publisher: name: Écublens, MATHICSE
Year: 2020

description: In the current work we present two generalizations of the Parallel Tempering algorithm, inspired by the so-called continuous-time Infinite Swapping algorithm. Such a method, found its origins in the molecular dynamics community, and can be understood as the limit case of the continuous-time Parallel Tempering algorithm, where the (random) time between swaps of states between two parallel chains goes to zero. Thus, swapping states between chains occurs continuously. In the current work, we extend this idea to the context of time-discrete Markov chains and present two Markov chain Monte Carlo algorithms that follow the same paradigm as the continuous-time infinite swapping procedure. We analyze the convergence properties of such discrete-time algorithms in terms of their spectral gap, and implement them to sample from different target distributions. Numerical results show that the proposed methods significantly improve sampling efficiency over more traditional sampling algorithms such as Random Walk Metropolis and (traditional) Parallel Tempering.
On the Quantization of the GS String on $AdS_5 \times S^5$
Creators: name: Rajaraman, Arvind
name: Rozali, Moshe
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the quantization of the Green-Schwarz string action on $AdS_5 \times S^5$. We construct consistent, globally well-defined, gauge fixing choices for kappa symmetry and worldsheet diffeomorphism invariance. We then proceed to quantize the theory in a perturbation series in the inverse radius of curvature, in a background field expansion. We discuss vertex operators and correlation functions, and demonstrate agreement with supergravity results in the appropriate limit.
description: 17 pages, added remarks on gauge choice in section 3
O opozycjach kolorystycznych w ojkonimii Polski
Creators: name: Stachowski, Kamil
Publisher: name: figshare
Year: 2018
Subjects: subject: 200499 Linguistics not elsewhere classified
subject: FOS: Languages and literature
subject: Linguistics

description: On Colour Oppositions in Polish Oikonymy. There are more than 2000 settlements in Poland with names containing a colour adjective. Etymologists sometimes point to the colour of the soil or another physical attribute but more often than not those names are left entirely unexplained. The goal of the present paper is to tentatively probe Polish oikonymy for traces of an ancient system of colour symbolism, perhaps one similar to the Chinese-Turkic system which may be responsible for the Slavic names of White Russia, and Black and Red Ruthenia.
New Results for Two Optically Faint Low Mass X-Ray Binary Systems
Creators: name: Wachter, Stefanie
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present optical photometry of the low mass X-ray binary systems GX 349+2 and Ser X-1. Extensive VRI photometry of the faint optical counterpart (V=18.4) to GX 349+2 reveals a period of 22.5 +/- 0.1 h and half-amplitude 0.2 mag. This result confirms and extends our previously reported 22 h period. No color change is detected over the orbit, although the limits are modest. We also report the discovery of two new variable stars in the field of GX 349+2, including a probable W UMa system. Ser X-1 is one of the most intense persistent X-ray burst sources known. It is also one of only three burst systems for which simultaneous optical and X-ray bursts have been observed. The faint blue optical counterpart MM Ser (B~19.2) has long been known to have a companion 2.1" distant. Our images indicate that MM Ser is itself a further superposition of two stars, separated by only 1". At the very least, the ratio of inferred burst to quiescent optical flux is affected by the discovery of this additional component. In the worst case, the wrong object may have previously been assumed as the optical counterpart.
description: 16 pages including 10 figures and 3 tables; Uses AASTeX 4.0; Accepted for publication in The Astrophysical Journal, Volume 490, November 20, 1997
Search for Large Rapidity Gap Events in e^+ e^- Annihilation
Creators: name: Ellis, J.
name: Ross, D. A.
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the cross-section for the production of a low-mass colour-singlet cluster in $e^+e^-$ annihilation with a large rapidity gap between the colour-singlet cluster and the other jets. It is argued that such events are the cross-channel analogue of large-rapidity-gap events in deep-inelastic scattering, and therefore could in principle be used to investigate the analytic continuation of the BFKL pomeron to the positive-$t$ kinematic regime, where one would expect the trajectory to pass through glueball states. The cross section can be calculated in perturbative QCD, so that the infrared scale arising from non-perturbative effects, which prevents an exponential fall-off with rapidity gap in the case of deep-inelastic scattering, is absent in $e^+ e^-$ annihilation. Correspondingly, the cross section for such events decreases rapidly with increasing rapidity gap.
description: LATEX file - 21 pages + 15 figures
A perturbative re-analysis of N=4 supersymmetric Yang--Mills theory
Creators: name: Kovacs, Stefano
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The finiteness properties of the N=4 supersymmetric Yang-Mills theory are reanalyzed both in the component formulation and using N=1 superfields, in order to discuss some subtleties that emerge in the computation of gauge dependent quantities. The one-loop corrections to various Green functions of elementary fields are calculated. In the component formulation it is shown that the choice of the Wess-Zumino gauge, that is standard in supersymmetric gauge theories, introduces ultraviolet divergences in the propagators at the one-loop level. Such divergences are exactly cancelled when the contributions of the fields that are put to zero in the Wess-Zumino gauge are taken into account. In the description in terms of N=1 superfields infrared divergences are found for every choice of gauge different from the supersymmetric generalization of the Fermi-Feynman gauge. Two-, three- and four-point functions of N=1 superfields are computed and some general features of the infrared problem are discussed. We also examine the effect of the introduction of mass terms for the (anti) chiral superfields in the theory, which break supersymmetry from N=4 to N=1. It is shown that in the mass deformed model no ultraviolet divergences appear in two-point functions. It argued that this result can be generalized to n-point functions, supporting the proposal of a possible of use of this modified model as a supersymmetry-preserving regularization scheme for N=1 theories.
description: 41 pages, LaTeX2e, uses feynMP package to draw Feynman diagrams
COVID-19: A risk governance perspective
Creators: name: Collins, Aengus
Publisher: name: Lausanne, EPFL International Risk Governance Council (IRGC)
Year: 2020

description: One effect of the COVID-19 crisis has been to require policymakers to go through the various stages of the risk governance process under conditions of high stress and compressed timescales. In this article we use our risk governance framework to outline the key stages of the evolution of the crisis, and ask what lessons might be learned for the immediate future.
MATHICSE technical Report : A parabolic local problem with exponential decay of the resonance error for numerical homogenization
Creators: name: Assyr, Abdulle
name: Arjmand, Doghonay
name: Paganoni, Edoardo
Publisher: name: Écublens, MATHICSE
Year: 2020

description: This paper aims at an accurate and ecient computation of eective quantities, e.g., the homogenized coecients for approximating the solu- tions to partial dierential equations with oscillatory coecients. Typical multiscale methods are based on a micro-macro coupling, where the macro model describes the coarse scale behaviour, and the micro model is solved only locally to upscale the eective quantities, which are missing in the macro model. The fact that the micro problems are solved over small domains within the entire macroscopic domain, implies imposing arti- cial boundary conditions on the boundary of the microscopic domains. A naive treatment of these articial boundary conditions leads to a rst order error in "=, where " < represents the characteristic length of the small scale oscillations and d is the size of micro domain. This er- ror dominates all other errors originating from the discretization of the macro and the micro problems, and its reduction is a main issue in to- day's engineering multiscale computations. The objective of the present work is to analyse a parabolic approach, rst announced in [A. Abdulle, D. Arjmand, E. Paganoni, C. R. Acad. Sci. Paris, Ser. I, 2019], for computing the homogenized coecients with arbitrarily high convergence rates in "=. The analysis covers the setting of periodic microstructure, and numerical simulations are provided to verify the theoretical ndings for more general settings, e.g. random stationary micro structures.
title: Механизация подготовительных, вспомогательных и земляных работ в строительстве
Creators: name: ELS IPR BOOKS
Publisher: name: Липецкий государственный технический университет, Профобразование
Year: 2024

description: В учебном пособии рассмотрены машины для механизации подготовительных, вспомогательных и земляных работ при осуществлении строительной деятельности: кусторезы, корчеватели, машины для рыхления мёрзлых грунтов, бульдозеры, скреперы и т.д. В конце каждой главы даны контрольные вопросы для закрепления пройденного материала. Подготовлено в соответствии с требованиями Федерального государственного образовательного стандарта среднего профессионального образования. Предназначено для изучения дисциплины «Строительные машины и средства малой механизации» по укрупненной группе специальностей и профессий «Техника и технологии строительства».
MATHICSE Technical Report : A posteriori error analysis of a local adaptive discontinuous Galerkin method for convection-diffusion-reaction equations
Creators: name: Assyr, Abdulle
name: Rosilho De Souza, Giacomo
Publisher: name: Écublens, MATHICSE
Year: 2020

description: A local adaptive discontinuous Galerkin method for convection-diffusion-reaction equations is introduced. Departing from classical adaptive algorithms, the proposed method is based on a coarse grid and iteratively improves the accuracy of the solution by solving local elliptic problems identified by an a posteriori error control. An a posteriori error analysis based on fluxes reconstruction shows that the local adaptive method is robust in singularly perturbed regimes. Numerical comparison with a classical adaptive algorithm illustrate the efficiency of the new method.
Covid-19 contact tracing: efficacy and privacy
Creators: name: Collins, Aengus
Publisher: name: EPFL
Year: 2020

description: This article assesses the risk-risk trade-off between privacy and efficacy that the use of contact tracing apps entails. It argues for the use of privacy-preserving apps, but highlights potential weaknesses and cautions against allowing digital tracing to detract from other pillars in the pandemic response.
lnternational governance issues on climate engineering Information for policymakers
Creators: name: Florin, Marie-Valentine
name: Rouse, Paul
name: Hubert, Anna-Maria
name: Honegger, Matthias
name: Reynolds, Jesse
Publisher: name: Lausanne, EPFL International Risk Governance Center
Year: 2020

description: Some climate engineering technologies are being developed to remove CO2 from the atmosphere (carbon dioxide removal, CDR), which is expected to contribute to reducing and preventing climate change. Some other technologies (solar radiation modification, SRM) would artificially cool the planet and could reduce some symptoms and risks of climate change. Meaningful steps may need to be taken soon to lay a foundation for a decision process regarding research, policy, regulation and possible use. Driven by questions and needs from the international policymaking community to better understand the potential benefits as well as opportunities, risks, uncertainties and other challenges of CDR and SRM, at both technical and governance levels, this report reviews and compares technologies and their potential contributions, costs, risks, uncertainties, before surveying the current legal and institutional landscape of governance regarding climate engineering. It then addresses trade-offs between risks and discusses possible options for international governance, including criteria for evaluating options. The need for more inclusive approaches and the pros- and cons of institutional fragmentation are emphasized. Options for sites of international governance are discussed, for various technologies, as well as general principles and specific recommendations to: distinguish between CDR and SRM as well as among CDR techniques; accelerate authoritative, comprehensive, and international scientific assessment; encourage the research, development, and responsible use of some CDR techniques; internationally build capacity for evaluating CDR and SRM; facilitate non-state governance; and explore potential further governance of SRM while remaining agnostic concerning its use.
MATHICSE technical Report : Stabilized explicit multirate methods for stiff differential equations
Creators: name: Abdulle, Assyr
name: Grote, Marcus J.
name: Rosilho De Souza, Giacomo
Publisher: name: Écublens, MATHICSE
Year: 2020

description: Stabilized Runge–Kutta (aka Chebyshev) methods are especially efficient for the numerical solution of large systems of stiff differential equations because they are fully explicit; hence, they are inherently parallel and easily accommodate nonlinearity. For semi-discrete parabolic (or diffusion dominated) problems, for instance, stabilized Runge–Kutta methods overcome the stringent stability condition of standard methods without sacrificing explicitness. However, when much of the stiffness is only induced by a few components, as in the presence of spatially local mesh refinement, their efficiency deteriorates. To remove the crippling effect of a few severely stiff components on the entire system of differential equations, we derive a modified equation, whose stiffness solely depend on the remaining mildly stiff components. By applying stabilized Runge–Kutta methods to this modified equation, we then devise an explicit multirate Runge–Kutta–Chebyshev (mRKC) method whose stability conditions are independent of a few severely stiff components. Stability of the mRKC method is proved for a model problem, whereas its efficiency and usefulness are demonstrated through a series of numerical experiments.
A Lower Limit to the Universal Density of Metals at z \sim 3
Creators: name: Songaila, Antoinette
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Column density distribution functions of CIV with 12.05 < log (N) < 14.35 and SiIV with 11.70 < log (N) < 13.93 have been obtained using 81 CIV absorbers and 35 SiIV absorbers redward of the Ly alpha forest in the lines of sight to seven quasars with 2.518 < z(em) < 3.78. These distribution functions have been directly integrated to yield ion densities at z = 3 to 3.5 of Omega(CIV) = (2.0 \pm 0.5) x 10(-8) and Omega(SiIV) = (7.0 \pm 2.6) x 10(-9) with H0 = 65 km/s/Mpc and q0 = 0.02 (1 sigma errors). A larger sample of 11 quasar lines of sight was used to measure CII/CIV, SiIII/SiIV, and NV/CIV ratios, which suggest that CIV and SiIV are the dominant ionization stages and that corrections to Omega(Carbon) and Omega(Silicon) are no more than a factor of two. Normalizing the alpha-process elements to silicon and the Fe-coproduction elements to carbon gives a density of heavy elements in these forest clouds of Omega(metals) = (3.3 \pm 0.8) x 10(-7) (H0 = 65, q0 = 0.02). The implications for the amount of star formation and for the ionization of the IGM prior to z = 3 are discussed.
description: 12 pages LaTeX (aaspp4.sty) with 3 encapsulated postscript figures. To be published in ApJ Letters (accepted September 3, 1997)
The radion contribution to the weak mixing angle
Creators: name: Kim, Jihn E.
name: Kyae, Bumseok
name: Park, Jong Dae
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the Randall-Sundrum (RS) compactification, the gap between two branes is stabilized by the vacuum expectation value of a scalar field called {\it radion}, $ϕ$. This radion behaves like a weak interaction singlet scalar field, coupling to matter through the trace of the energy momentum tensor. We find that it can induce a sizable correction to the weak mixing angle if the vacuum expectation value and the mass of the radion is around TeV. We also comment on the contribution to the $K_L-K_S$ mass difference and to $(g-2)_μ$.
description: LaTeX file of 15 pages with 7 eps figures
MATHICSE Technical Report: Non-intrusive double-greedy parametric model reduction by interpolation of frequency-domain rational surrogates
Creators: name: Nobile, Fabio
name: Pradovera, Davide
Publisher: name: Écublens, MATHICSE
Year: 2020

description: We propose a model order reduction approach for non-intrusive surrogate modeling of parametric dynamical systems. The reduced model over the whole parameter space is built by combining surrogates in frequency only, built at few selected values of the parameters. This, in particular, requires matching the respective poles by solving an optimization problem. We detail how to treat unbalanced cases, where the surrogates to be combined have a different number of poles. If the frequency surrogates are constructed by minimal rational interpolation, frequency and parameters can both be sampled in a greedy fashion, by employing a fully non-intrusive "look-ahead" strategy. We explain how our proposed technique can be applied even in a high-dimensional setting, by employing locally-refined sparse grids to weaken the curse of dimensionality. Numerical examples are used to showcase the effectiveness of the method, and to highlight some of its limitations in dealing with unbalanced matching, as well as with a large number of parameters.
Massive Gauge Axion Fields
Creators: name: Arias, P. J.
name: Khoudeir, A.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A gauge invariant formulation for the massive axion is considered. The axion acquires mass through a topological term which couples a (pseudo)scalar and a third rank antisymmetric tensor. Duality, local and canonical equivalences with the non-gauge invariant proposal are established. The supersymmetric version of the gauge invariant model is constructed.
description: Final version. New references added
title: ADCO, Ordre cistercien : comptes (1499-1515) (11 H 1162), f. 00175
Creators: name: de la Côte-d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CBMA/CG21/F.PETOT/2019
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: comptes
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Ordre cistercien : comptes (1499-1515), Archives départementales de la Côte-d'Or, (11 H 1162). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Ordre cistercien : comptes (1499-1515), Archives départementales de la Côte-d'Or, (11 H 1162), f. 00175, in Projet CBMA - Corpus Burgundiae Medii Aevi \[Ressource en ligne\], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
A compact ultrahigh vacuum scanning tunneling microscope with dilution refrigeration
Creators: name: Balashov, Timofey
name: Meyer, Michael
name: Wulfhekel, Wulf
Publisher: name: arXiv
Year: 2018
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We have designed and built a scanning tunneling microscope (STM) setup for operation at millikelvin temperatures in ultra high vacuum. A compact cryostat with an integrated dilution refrigerator has been built, that allows measurements at a base temperature of 25 mK in magnetic field up to 7.5 T with low mechanical and electronic noise. The cryostat is not larger than conventional helium bath cryostats (23 and 13 liters of nitrogen and helium respectively), so that the setup does not require a large experimental hall and fits easily into a standard lab space. Mechanical vibrations with running dilution circulation were kept below 300 fm/$\sqrt{\mathrm{Hz}}$ by mechanically decoupling the STM from the cryostat and the pumping system. All electronic input lines were low-pass filtered, reducing the electronic temperature to below 100 mK, as deduced from the quasiparticle peaks of superconducting aluminium. The microscope is optically accessible in the parked position, making sample and tip exchange fast and user-friendly. For measurement the STM is lowered 60 mm down so that the sample ends in the middle of a wet superconducting magnetic coil.
description: 9 pages, 1 table, 9 figures. Submitted to Rev. Sci. Instr
Live observation of the oxidation of coated interconnects with environmental electron microscopy
Creators: name: Poitel, Stéphane
name: Wang, Zhu-jun
name: Willinger, Marc
name: Van Herle, Jan
name: Hébert, Cécile
Publisher: name: École Polytechnique Fédérale de Lausanne
Year: 2020

description: Coatings on SOFC interconnect steels are complex and challenging to investigate due to the high number of chemical elements which are present and interact with each other. In this work, advanced electron microscopy techniques are used to study the steel oxidation in its initial stage (first days), where scale is built up and first elemental diffusions and interactions may be clearly seen. First the surface of a coated steel piece is observed in an environmental scanning electron microscope (E-SEM) at high temperature (880°C) under a pressure of pure oxygen (40Pa) allowing a direct observation of its morphological evolution during oxidation for 48h (Fig.1 (a)-(c)). For post data treatment, images were segmented using a machine-learning plug-in available in ImageJ (Fig.1 (d)), and the size of the grains on the surface quantified as a function of time. After the oxidation experiment in the E-SEM, a focused ion beam (FIB) was used to extract a TEM lamella from the exact same zone as that observed during the in situ exposure (rectangle in Fig.1 (a)-(d)), targeting specific grains where a two-stage growth could be observed. This post-mortem TEM cross section observation (Fig. 1 (e)-(f)) allows correlations of the sub-surface microstructure and grains with the surface structures seen during the in situ oxidation process. The system studied so far concerns Ce-Co coated SSHT steel (Sandvik).
title: Défis et accompagnement infirmier en soins intensifs : de la décision d'arrêt de traitement à la transition vers les soins de confort en fin de vie
title: Défis et accompagnement infirmier en soins intensifs : de la décision d'arrêt de traitement à la transition vers les soins de confort en fin de vie
titleType: AlternativeTitle
Creators: name: Banderet, Amy
name: Esseiva, Camille
Publisher: name: Unknown
Year: 0
Subjects: subject: Soins de fin de vie
subject: Soins intensifs
subject: Fin de vie
subject: Accompagnement
subject: Soins infirmiers

description: Les soins de fin de vie représentent un aspect important des soins infirmiers, particulièrement dans les unités de soins intensifs où les patients, souvent dans un état instable, sont confrontés à des situations complexes oscillant entre un état de vie ou de mort. La transition entre les soins curatifs invasifs et les soins de confort de fin de vie est fréquemment reconnue comme une source de stress, de désaccord et de dilemmes éthiques par le personnel médical et soignant. Notre problématique a émergé à la suite de différentes expériences personnelles vécues lors de nos stages sur le terrain dans le cadre de notre formation Bachelor HES en soins infirmiers. Ces expériences concrètes ont suscité de nombreux questionnements sur l’implication des infirmiers dans les décisions de fin de vie, les défis que rencontrent le personnel soignant dans cette étape de transition, et l’accompagnement proposé aux patients et familles dans ce contexte particulier de soins aigus. En menant une revue de littérature approfondie sur le sujet, cette étude vise à explorer et comprendre ces différents aspects d’un point de vue infirmier afin d’en ressortir les bonnes pratiques dans le but d’améliorer la qualité des soins de fin de vie en milieu intensif.
Lithobius (Lithobius) valesiacus Verhoeff 1935
Creators: name: Iorio, Étienne
name: Zapparoli, Marzio
name: Ponel, Philippe
name: Geoffroy, Jean-Jacques
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Chilopoda
Lithobiomorpha
Lithobiidae
Lithobius
Lithobius valesiacus

description: Lithobius (Lithobius) valesiacus Verhoeff, 1935
Lithobius lusitanus valesiacus Verhoeff, 1935: 196.
LOCALITÉ TYPE. — Suisse, Twannklamm, 560 m d’altitude, audessus du lac Bieler.
MATÉRIEL EXAMINÉ. — Beuil (06), PNM, Les Launes, conifères et lisière pelouse, 1600 m, 7.VI.2008, réc./dét. EI: 1♂; Lucéram (06), Peira-Cava, La Cabanette, hêtres-conifères, 1350-1400 m, 1.X.2008, réc./dét. EI: 1♂, 4♀; Méolans-Revel (04), Tête de l’Estrop, 2961 m, 44,28652347N, 6,505249473E, 25.IX.2009, réc. FB/dét. EI: 1♀; Saint-Martin-Vésubie (06), PNM, vallon Madone de Fenestre, lariçaie, 1830 m, 44°05’36’’N- 7°21’24’’E, 22.V.2010, réc./dét. MZ: 1♂, 1♀; Saint-Martin-Vésubie (06), PNM, vallon Madone de Fenestre, milieux ouverts à proximité d’un boisement de genévriers, 1900 m, 44°05’38’’N- 7°21’09’’E, 22.V.2010, réc./dét. MZ: 1♂, 2♀; Méolans-Revel (04), La Petite Barre, 2700 m, 44,28790484N, 6,527362399E, 24.IX.2010, réc. FB/dét. EI: 1♀. Spécimens conservés en éthanol à 70° dans la collection personnelle des auteurs (EI, MZ).
RÉPARTITION ET HABITAT. — L. (L.) valesiacus est un élément ouesteuropéen, présent aux Pays-Bas, en Allemagne, en Suisse, au Nord de l’Italie et dans le Nord-Est et le Sud-Est de la France (Massif vosgien; Massif alpin, Préalpes du Sud, Alpes maritimes) (Berg et al. 2008; Iorio 2008, 2010b). Il est exclusivement présent en France dans les régions montagneuses au moins dans le Sud-Est (Iorio 2008, 2010b), à partir de 1320 mètres d’altitude, et jusqu’à 2961 mètres (présent travail), ce qui constitue une altitude-record pour cette espèce. Ce caractère orophile se retrouve du côté italien (Minelli & Zapparoli 1992; Zapparoli 1993). 16 des stations connues dans le département des Alpes-Maritimes renseignent sur l’habitat: huit milieux forestiers (quatre lariçaies, deux hêtraies-conifères, un boisement de conifères et sa lisière, et une forêt indéterminée), cinq prairies/ pelouses subalpines et alpines, une milieu ouvert à proximité de genévriers et deux en étage nival. Dans le Nord de sa répartition, L. (L.) valesiacus est sylvicole, de l’étage planitiaire à l’étage montagnard (Spelda 1999).
description: Published as part of Iorio, Étienne, Zapparoli, Marzio, Ponel, Philippe & Geoffroy, Jean-Jacques, 2015, Les myriapodes chilopodes (Chilopoda) du Parc national du Mercantour, du département des Alpes-Maritimes et de leurs environs: description d'une nouvelle espèce du genre Lithobius Leach, 1814 s. s., synthèse des connaissances et espèces menacées, pp. 211-238 in Zoosystema 37 (1) on page 226, DOI: 10.5252/z2015n1a11, http://zenodo.org/record/5155397
Left-handed polarized spin waves in ferromagnets induced by spin-transfer torque
Creators: name: Zhou, Zhen-wei
name: Wang, Xi-guang
name: Nie, Yao-zhuang
name: Xia, Qing-lin
name: Zeng, Zhong-ming
name: Guo, Guang-hua
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Polarization is a fundamental property of waves that refers to the orientation of the oscillations. It has been widely used to encode information in photonics and phononics. However, the polarization of spin waves is rarely used yet in magnonics. The reason for this is that only the right-handed polarized spin waves can be accommodated in ferromagnets. Here, we report that stable left-handed polarized spin waves can be introduced into ferromagnets if a spin-polarized electrical current is presented. The right-handed and left-handed polarized spin waves coexist when the current density is larger than a critical value while the system keeps stable. The results are confirmed by micromagnetic simulations. This work provides new playgrounds to study spin waves and points to new findings for future experimental studies.
description: 17 papes, 5 figures
MATHICSE Technical Report : Analytical and numerical study of a modified cell problem for the numerical homogenization of multiscale random fields
Creators: name: Abdulle, Assyr
name: Arjmand, Doghonay
name: Paganoni, Edoardo
Publisher: name: Écublens, EPFL
Year: 2020

description: A central question in numerical homogenization of partial differential equations with multiscale coefficients is the accurate computation of effective quantities, such as the homogenized coefficients. Computing homogenized coefficients requires solving local corrector problems followed by upscaling relevant local data. The most naive way of computing homogenized coefficients is by solving a local elliptic problem, which is known to suffer from the so-called resonance error dominating all other errors inherent in multiscale computations. A far more efficient modelling strategy, based on adding an exponential correction term to the standard local elliptic problem, has recently been proved to result in exponentially decaying error bounds with respect to the size of the local geometry. The ques- tions in relation with the accuracy and computational efficiency of this approach has been previously addressed in the context of periodic homogenization. The present article concerns the extension of mathematical and numerical study of this modified elliptic corrector problem to stochastic homog- enization problems. In particular, we assume a stationary, ergodic micro-structure and i) establish the well-posedness of the corrector equation, ii) analyse the bias (or the systematic error) originat- ing from additional exponential correction term in the model. Numerical results corroborating our theoretical findings are presented.
MATHICSE Technical Report : Explicit stabilized multirate method for stiff stochastic differential equations
Creators: name: Abdulle, Assyr
name: Rosilho De Souza, Giacomo
Publisher: name: Écublens, EPFL
Year: 2020

description: Stabilized explicit methods are particularly ecient for large systems of sti stochastic dif- ferential equations (SDEs) due to their extended stability domain. However, they loose their eciency when a severe stiness is induced by very few fast degrees of freedom, as the sti and nonsti terms are evaluated concurrently. Therefore, inspired by [A. Abdulle, M. J. Grote, and G. Rosilho de Souza, Preprint (2020), arXiv:2006.00744], we introduce a stochastic modi- ed equation whose stiness depends solely on the slow terms. By integrating this modied equation with a stabilized explicit scheme we devise a multirate method which overcomes the bottleneck caused by a few severely sti terms and recovers the eciency of stabilized schemes for large systems of nonlinear SDEs. The scheme is not based on any scale separation as- sumption of the SDE and therefore it is employable for problems stemming from the spatial discretization of stochastic parabolic partial dierential equations on locally rened grids. The multirate scheme has strong order 1=2, weak order 1 and its stability is proved on a model problem. Numerical experiments conrm the eciency and accuracy of the scheme.
MATHICSE Technical Report : Drift Estimation of Multiscale Diffusions Based on Filtered Data
Creators: name: Abdulle, Assyr
name: Garegnani, Giacomo
name: Pavliotis, Grigorios A.
name: Stuart, Andrew M.
name: Zanoni, Andrea
Publisher: name: Écublens, EPFL
Year: 2020

description: We study the problem of drift estimation for two-scale continuous time series. We set ourselves in the framework of overdamped Langevin equations, for which a single-scale surrogate homogenized equation exists. In this setting, estimating the drift coefficient of the homogenized equation requires pre-processing of the data, often in the form of subsampling; this is because the two-scale equation and the homogenized single-scale equation are incompatible at small scales, generating mutually singular measures on the path space. We avoid subsampling and work instead with filtered data, found by application of an appropriate kernel function, and compute maximum likelihood estimators based on the filtered process. We show that the estimators we propose are asymptotically unbiased and demonstrate numerically the advantages of our method with respect to subsampling. Finally, we show how our filtered data methodology can be combined with Bayesian techniques and provide a full uncertainty quantification of the inference procedure.
Search for production of Higgs boson pairs in the four b quark final state using large-area jets in proton-proton collisions at $\sqrt{s} =$ 13 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search is presented for pair production of the standard model Higgs boson using data from proton-proton collisions at a centre-of-mass energy of 13 TeV, collected by the CMS experiment at the CERN LHC in 2016, and corresponding to an integrated luminosity of 35.9 fb$^{-1}$. The final state consists of two b quark-antiquark pairs. The search is conducted in the region of phase space where one pair is highly Lorentz-boosted and is reconstructed as a single large-area jet, and the other pair is resolved and is reconstructed using two b-tagged jets. The results are obtained by combining this analysis with another from CMS looking for events with two large jets. Limits are set on the product of the cross sections and branching fractions for narrow bulk gravitons and radions in warped extra-dimensional models having a mass in the range 750-3000 GeV. The resulting observed and expected upper limits on the non-resonant Higgs boson pair production cross section correspond to 179 and 114 times the standard model value, respectively, at 95% confidence level. The existence of anomalous Higgs boson couplings is also investigated and limits are set on the non-resonant Higgs boson pair production cross sections for representative coupling values.
description: Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/B2G-17-019 (CMS Public Pages)