Search results for "solution"

showing 10 items of 5638 documents

Behind the scenes of artificial intelligence: a study of micro-work platforms in France

2019

Este artículo es una versión resumida del informe “Le Micro-travail en France. Derrière l’automatisation de nouvelles précarités au travail?» This article is a summarized version of the report "Le Micro-travail en France. Derrière l’automatisation de nouvelles précarités au travail?" .; International audience; Micro-work internet services allocate small, standardized tasks of data generation and annotation to crowds of providers. The outputs are mainly used to produce artificial intelligence solutions. It is an exemplary instance of the “platformization” of the economy, and of the transformations of labour that digital technologies bring about. To uncover the conditions under which micro-wo…

standardized tasks of data generation and annotation to crowds of providers. The outputs are mainly used to produce artificial intelligence solutions. It is an exemplary instance of the ?platformization? of the economyinteligencia artificialwithout adequate protection and with only limited opportunities to voice issues or seek advice. Especially as the current boom of artificial intelligence raises demand for their servicesPaolawe use the data collected to present the socio-economic backgrounds of the people who engage in micro-workmicro-workClémentand the general public. This article is a summarized version of the report ?Le Micro-travail en France. Derrière l?automatisation de nouvelles précarités au travail?» trabajo digitaltrabajo digitaltheir motivations and needsUNESCO::SOCIOLOGÍAwhile the micro-working population is very diverseand its broader societal implicationsLe Ludecwe conducted an extensive empirical study in France. In this paperand of the transformations of labour that digital technologies bring about. To uncover the conditions under which micro-work is performedmicro-trabajoElinor Micro-work internet services allocate small[SHS.SOCIO]Humanities and Social Sciences/SociologyWahal1137-7038 8537 Arxius de sociologia 558787 2019 41 7605683 En la trastienda de la inteligencia artificial. Una investigación sobre las plataformas de micro-trabajo en francia Casillia significant portion (including working women with children and with higher education degrees) face pressing financial needs and rely on this activity to make ends meet. Micro-workers are also exposed to distinctive psycho-social risksTubaro:SOCIOLOGÍA [UNESCO]artificial intelligenceand their everyday practices. We show thatartificial intelligence 87 107unionseconomía de plataformasdigital labourtheir working conditions call for attention from policy-makersAntonio A.platform economy
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Euclid preparation: XI. Mean redshift determination from galaxy redshift probabilities for cosmic shear tomography

2021

Ilbert, O., et al. (Euclid Collaboration)

statistical [Methods]IMPACTUNIVERSEAstrophysics01 natural sciencesDark energyGalaxies: distances and redshiftdark energyPHOTOMETRIC REDSHIFTS010303 astronomy & astrophysicsWeak gravitational lensingPhotometric redshiftmedia_commonPhysicsdistances and redshift [Galaxies]Dark energy; Galaxies: distances and redshifts; Methods: statisticalSIMULATIONastro-ph.CO3103 Astronomy and AstrophysicsProbability distributionSpectral energy distributiongalaxies: distances and redshiftsAstrophysics - Cosmology and Nongalactic AstrophysicsCosmology and Nongalactic Astrophysics (astro-ph.CO)530 Physicsastro-ph.GAmedia_common.quotation_subjectFOS: Physical sciencesAstrophysics::Cosmology and Extragalactic Astrophysics1912 Space and Planetary Science0103 physical sciencesdistances and redshifts [Galaxies]/dk/atira/pure/subjectarea/asjc/1900/1912DISTRIBUTIONSmethods: statistical010308 nuclear & particles physicsAstronomy and AstrophysicsPERFORMANCE115 Astronomy Space scienceAstrophysics - Astrophysics of GalaxiesEVOLUTIONGalaxyUniverseRedshiftSTELLARRESOLUTIONSpace and Planetary Science10231 Institute for Computational ScienceAstrophysics of Galaxies (astro-ph.GA)Dark energy/dk/atira/pure/subjectarea/asjc/3100/3103[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
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A Sub-Supersolution Approach for Robin Boundary Value Problems with Full Gradient Dependence

2020

The paper investigates a nonlinear elliptic problem with a Robin boundary condition, which exhibits a convection term with full dependence on the solution and its gradient. A sub- supersolution approach is developed for this type of problems. The main result establishes the existence of a solution enclosed in the ordered interval formed by a sub-supersolution. The result is applied to find positive solutions.

sub-supersolutionConvectionlcsh:MathematicsGeneral Mathematics010102 general mathematicsMathematics::Analysis of PDEsInterval (mathematics)Robin boundary conditionType (model theory)lcsh:QA1-93901 natural sciencesRobin boundary conditionTerm (time)010101 applied mathematicsNonlinear systemnonlinear elliptic problemSettore MAT/05 - Analisi Matematicapositive solutiongradient dependenceComputer Science (miscellaneous)Applied mathematicsBoundary value problem0101 mathematicsEngineering (miscellaneous)MathematicsMathematics
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Regular solutions for nonlinear elliptic equations, with convective terms, in Orlicz spaces

2022

We establish some existence and regularity results to the Dirichlet problem, for a class of quasilinear elliptic equations involving a partial differential operator, depending on the gradient of the solution. Our results are formulated in the Orlicz-Sobolev spaces and under general growth conditions on the convection term. The sub- and supersolutions method is a key tool in the proof of the existence results.

sub-supersolutionMathematics - Analysis of PDEsOrlicz-Sobolev spaceSettore MAT/05 - Analisi Matematicagradient dependenceGeneral Mathematicsnonlinear elliptic equationFOS: Mathematics35J25 35J99 46E35Analysis of PDEs (math.AP)
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On the Sub-Supersolution Approach for Dirichlet Problems driven by a (p(x), q(x))-Laplacian Operator with Convection Term

2021

The method of sub and super-solution is applied to obtain existence and location of solutions to a quasilinear elliptic problem with variable exponent and Dirichlet boundary conditions involving a nonlinear term f depending on solution and on its gradient. Under a suitable growth condition on the convection term f, the existence of at least one solution satisfying a priori estimate is obtained.

sub-supersolutionpositive solutionSettore MAT/05 - Analisi Matematicagradient dependence(p(x) q(x))-LaplacianDirichlet problem
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Reverse Catmull-Clark Subdivision

2006

Reverse subdivision consists in constructing a coarse mesh of a model from a finer mesh of this same model. In this paper, we give formulas for reverse Catmull-Clark subdivision. These formulas allow the constructing of a coarse mesh for almost all meshes. The condition for being able to apply these formulas is that the mesh to be reversed must be generated by the subdivision of a coarse mesh. Except for this condition, the mesh can be arbitrary. Vertices can be regular or extraordinary and the mesh itself can be arbitrary (triangular, quadrilateral…).

subdivision surfacesComputer Science::Graphicsmultiresolutionmultirozlišenídělené plochyanimationMathematicsofComputing_NUMERICALANALYSISanimaceCatmull-Clark schemeCatmull-Clarckovo schémaComputer Science::DatabasesComputingMethodologies_COMPUTERGRAPHICSMathematics::Numerical Analysis
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Location of solutions for quasi-linear elliptic equations with general gradient dependence

2017

Existence and location of solutions to a Dirichlet problem driven by $(p,q)$-Laplacian and containing a (convection) term fully depending on the solution and its gradient are established through the method of subsolution-supersolution. Here we substantially improve the growth condition used in preceding works. The abstract theorem is applied to get a new result for existence of positive solutions with a priori estimates.

subsolution-supersolutionGradient dependenceApplied Mathematics010102 general mathematicsMathematical analysisMathematics::Analysis of PDEs$(pQuasi-linear elliptic equationq)$-laplacian01 natural sciences010101 applied mathematics(p q)-laplacian; Gradient dependence; positive solution; Quasi-linear elliptic equations; subsolution-supersolution; Applied Mathematicspositive solutionSettore MAT/05 - Analisi MatematicaQA1-939Quasi linear0101 mathematicsquasi-linear elliptic equationsMathematics(p q)-laplacianMathematics
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Virtualization of work in global supply chains

2016

ABSTRACT. Background: The paper is devoted to the notion and benefits of implementing virtual work in global supply chains. Virtual work must be understood as an intentional activity of a human being, aimed at rendering services (tangible and intangible), by means of ITC tools, performed in a distance from the traditional place of work, in a mobile manner. The empirical research were conducted on the basis of 4 case studies of global leaders of supply chains, which in accordance with M. Fisher's classification, represent two types. The case studies confirmed the positive influence of virtual work both in effective and flexible supply chains. Favourable market and technological conditions an…

supply chain managementbut it also creates possibilities of better usage of own resourcenew methods of work. INTRODUCTION Global economic crisis significantly increases the pressure on reduction of cost and risk connected with the functioning of global supply chains. Among many ways to reduce the cost and the uncertainty of demand for the products of supply chain the essential one is the increase of information transparency due to modern ICT solutions. The popularisation of SCM class business apps not only contributes to the increase of the scope of logistic and production outsourcingvirtual workeffective supply chainsupply chainflexible supply chainLogForum
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The influence of surface treatment on the anodizing of Magnesium in Alkaline Solution

2008

surface treatment anodizing Magnesium Alkaline Solution
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One‐magnon Raman scattering in Ni c Mg 1–c O solid solutions

2005

The one-magnon Raman scattering was studied for the first time in antiferromagnetic NicMg1–cO solid solutions as a function of temperature and composition. We found that (i) the one-magnon frequency extrapolated to T = 0 K experiences an abrupt change between c = 0.99 and c = 0.9 and (ii) the one-magnon energy for highly diluted nickel oxide vanishes significantly below the Neel temperature. The obtained dependences are compared to the theoretical predictions within the mean field approximation. (© 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

symbols.namesakeCondensed matter physicsMean field theoryChemistryNickel oxideMagnonsymbolsAntiferromagnetismCondensed Matter::Strongly Correlated ElectronsNéel temperatureRaman scatteringSolid solutionphysica status solidi (c)
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