Results 41 to 50 of about 1,603,518 (234)

Numerical study of different ventilation schemes in a classroom for efficient aerosol control

Heliyon, 2023
The air quality is a parameter to be controlled in order to live in a comfortable place. This paper analyzes the trajectory of aerosols exhaled into the environment in a classroom.
Ainara Ugarte-Anero, Unai Fernandez-Gamiz, Koldo Portal-Porras, Jose Manuel Lopez-Guede, Gaspar Sanchez-Merino   +4 more
doaj   +1 more source

Approximating ATSP by Relaxing Connectivity

, 2015
The standard LP relaxation of the asymmetric traveling salesman problem has been conjectured to have a constant integrality gap in the metric case. We prove this conjecture when restricted to shortest path metrics of node-weighted digraphs. Our arguments
Svensson, Ola
core   +1 more source

Flow Channeling in Fracture Networks: Characterizing the Effect of Density on Preferential Flow Path Formation

Water Resources Research, 2020
Flow channelization is a commonly observed phenomenon in fractured subsurface media where the flow of fluids is restricted primarily to highly transmissive fracture networks surrounded by a low‐permeability rock matrix.
J. Hyman
semanticscholar   +1 more source

Modeling Performance of SCALE‐AMPS: Simulations of Arctic Mixed‐Phase Clouds Observed During SHEBA

Journal of Advances in Modeling Earth Systems, 2022
The Advanced Microphysics Prediction System (AMPS), which adopts a two‐moment hybrid‐bin habit‐predicting scheme, was previously developed to study cloud microphysical processes that depend on ice habit; however, only one particular atmospheric model ...
Chia Rui Ong, Makoto Koike, Tempei Hashino, Hiroaki Miura   +3 more
doaj   +1 more source

CoEulerian graphs

, 2015
We suggest a measure of "Eulerianness" of a finite directed graph and define a class of "coEulerian" graphs. These are the graphs whose Laplacian lattice is as large as possible.
Farrell, Matthew, Levine, Lionel
core   +1 more source

Fabrication‐Directed Entanglement for Designing Chiral and Anisotropic Metamaterial Foams

Advanced Engineering Materials, EarlyView.
This work introduces fabrication‐directed entanglement (FDE), combining viscous thread printing and topology optimization to program entangled foams with spatially patterned stiffness. By tuning coil density, FDE enables anisotropy, programmable Poisson's ratio, and chirality in foams.
Daniel Revier, Brett Emery, Jacob Miske, Jeffrey Lipton   +3 more
wiley   +1 more source

An Explosive Driven Shock Tube-Based Laboratory Scale Test for Combined Blast and Fragment Impact Loading

Applied Sciences, 2022
This work is a part of a larger research effort to better understand the combined effect of the blast wave and fragment impacts following the detonation of a shrapnel bomb. It is known that the time interval Δt, which represents the difference in arrival
Oussama Atoui, Georgios Kechagiadakis, Abdelhafidh Moumen, Azer Maazoun, Bachir Belkassem, Lincy Pyl, David Lecompte   +6 more
doaj   +1 more source

Efficient Multi-Robot Coverage of a Known Environment

, 2018
This paper addresses the complete area coverage problem of a known environment by multiple-robots. Complete area coverage is the problem of moving an end-effector over all available space while avoiding existing obstacles.
Benson, Kelly, Karapetyan, Nare, McKinney, Chris, Rekleitis, Ioannis, Taslakian, Perouz   +4 more
core   +1 more source

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

Advanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar, David Osman Busse, Maximilian Sprengel, Domenico Furfari, Marc‐André Nielsen, Guilherme Abreu Faria, Jérémy Epp   +6 more
wiley   +1 more source

On the elimination of the sweeping interactions from theories of hydrodynamic turbulence [PDF]

, 2006
In this paper, we revisit the claim that the Eulerian and quasi-Lagrangian same time correlation tensors are equal. This statement allows us to transform the results of an MSR quasi-Lagrangian statistical theory of hydrodynamic turbulence back to the ...
Altaisky, Andersen, Arad, Batchelor, Batchelor, Belinicher, Belinicher, Belinicher, Biferale, Boffetta, Borue, Danaila, Danaila, Danaila, Danaila, Danilov, Danilov, Danilov, Donsker, Dubois, Duchon, Eleftherios Gkioulekas, Eyink, Eyink, Eyink, Eyink, Eyink, Falkovich, Feynman, Fischer, Frisch, Frisch, Frisch, Furutsu, Galdi, Gibson, Giles, Gkioulekas, Gkioulekas, Gozzi, Gozzi, Gozzi, Grant, Hill, Hill, Hill, Hopf, Kaneda, Karman, Katz, Kolmogorov, Kolmogorov, Kolmogorov, Kraichnan, Kraichnan, Kraichnan, Kraichnan, Kraichnan, Kraichnan, Kraichnan, Leslie, Lewis, Li, Lindborg, Lindborg, L’vov, L’vov, L’vov, L’vov, L’vov, L’vov, L’vov, L’vov, L’vov, L’vov, L’vov, L’vov, L’vov, Martin, McComb, Moiseev, Monin, Monin, Mou, Nelkin, Nie, Novikov, Oboukhov, Phythian, Rasmussen, Richardson, Robertson, Rosen, Rosen, Sazontov, Smith, Sreenivasan, Sreenivasan, Stevens, Taylor, Taylor, Taylor, Thacker, Wyld, Yakhot   +104 more
core   +4 more sources