Results 11 to 20 of about 278,137 (249)

Sources of air pollution-related health impacts and benefits of radially applied transportation policies in 14 US cities

open access: yesFrontiers in Sustainable Cities, 2023
As the world becomes increasingly urbanized, growing populations are exposed to poor ambient air quality and at risk of the associated health outcomes. Urban air quality is affected both by local sources of air pollution and sources outside city borders.
M. Omar Nawaz   +6 more
doaj   +1 more source

Adjoint-Based Multi-Point and Multi-Objective Optimization of a Turbocharger Radial Turbine

open access: yesInternational Journal of Turbomachinery, Propulsion and Power, 2019
This paper presents a gradient-based design optimization of a turbocharger radial turbine for automotive applications. The aim is to improve both the total-to-static efficiency and the moment of inertia of the turbine wheel.
Lasse Mueller, Tom Verstraete
doaj   +1 more source

Assessing the tangent linear behaviour of common tracer transport schemes and their use in a linearised atmospheric general circulation model [PDF]

open access: yesTellus: Series A, Dynamic Meteorology and Oceanography, 2015
The linearity of a selection of common advection schemes is tested and examined with a view to their use in the tangent linear and adjoint versions of an atmospheric general circulation model.
Daniel Holdaway, James Kent
doaj   +1 more source

Development of the adjoint of GEOS-Chem [PDF]

open access: yes, 2006
We present the adjoint of the global chemical transport model GEOS-Chem, focusing on the chemical and thermodynamic relationships between sulfate – ammonium – nitrate aerosols and their gas-phase precursors.
Henze, D. K., Seinfeld, J. H.
core   +2 more sources

Adjoint functors induced by adjoint linear transformations [PDF]

open access: yesProceedings of the American Mathematical Society, 1974
Adjoint linear transformations between Hilbert spaces or, more generally, between dual systems of topological vector spaces induce contravariant functors which are adjoint on the right—essentially a Galois connection between the posets of subsets (or subspaces) of the spaces. Modulo scalars the passage from linear maps to functors is one-to-one; indeed,
openaire   +1 more source

Les acteurs privés de la sécurité transnationale et leurs victimes : quels recours possibles ?

open access: yesCriminologie, 2014
Le présent article s’intéresse aux réactions formelles relatives aux déviances commises par les acteurs de la sécurité privée transnationale sur le théâtre d’opérations militaires.
Massimiliano Mulone, Samuel Tanner
doaj   +1 more source

Delaying the Stall of A Low-Wing Aircraft Using A Novel Powerful Vortex Generator

open access: yesInventions, 2022
In this study, a new aerodynamic surface concept is introduced, which is a powerful vortex generator (PVG). It can delay the stall point in a low-wing aircraft. This delay leads to a significant increase in the CLmax of an aircraft.
Mostafa Goharshadi, Masoud Mirzaei
doaj   +1 more source

Les morphologies de la sécurité après le 11 septembre : hiérarchies, marché et réseaux

open access: yesCriminologie, 2005
RésuméLes attentats du 11 septembre ont mis en lumière la capacité d’action et de destruction des réseaux terroristes et l’impuissance des institutions étatiques traditionnelles verticales face à cette nouvelle forme de menace.
Benoît Dupont
doaj   +1 more source

Sources of PM2.5‐Associated Health Risks in Europe and Corresponding Emission‐Induced Changes During 2005–2015

open access: yesGeoHealth, 2023
We present a newly developed approach to characterize the sources of fine particulate matter (PM2.5)‐related premature deaths in Europe using the chemical transport model GEOS‐Chem and its adjoint.
Yixuan Gu   +4 more
doaj   +1 more source

Lie algebra cohomology and group structure of gauge theories [PDF]

open access: yes, 1995
We explicitly construct the adjoint operator of coboundary operator and obtain the Hodge decomposition theorem and the Poincar\'e duality for the Lie algebra cohomology of the infinite-dimensional gauge transformation group.
Bum‐Hoon Lee   +3 more
core   +3 more sources

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