Results 71 to 80 of about 6,665,424 (368)
THE SECURITY IMPACT OF THE MILITARIZATION OF OUTER SPACE
Bulletin of "Carol I" National Defense University, 2022 The competition for the military conquest of outer space dominated the public agenda during the Cold War. It was the spatial side of the geopolitical competition between the capitalist West and the communist East.
Alba Iulia Catrinel POPESCU
doaj +1 more source
Automorphisms of two-dimensional right-angled Artin groups
, 2007 We study the outer automorphism group of a right-angled Artin group A_G in the case where the defining graph G is connected and triangle-free. We give an algebraic description of Out(A_G) in terms of maximal join subgraphs in G and prove that the Tits ...
Behrstock +11 more
core +2 more sources
An Efficient Outer Space Algorithm for Generalized Linear Multiplicative Programming Problem
IEEE Access, 2020 Base on the outer space search and the branch-and-bound framework, this paper presents an efficient outer space branch-and-bound algorithm for globally solving generalized linear multiplicative programming problem.
Hongwei Jiao +4 more
semanticscholar +1 more source
Adaptable Tile‐Based Pneumatic Origami through Structurally Coupled Localized Actuation
Advanced Engineering Materials, EarlyView.This article presents tile‐based pneumatic origami structures with rigid tiles and flexible fabric creases, achieving adaptable properties including morphing shape, selective multistability, and tunable stiffness. Independently pressurized folding bladders at each crease enable structurally coupled localized actuation of origami structures.
Tiantian Li, Jonathan Luntz, Diann Brei
wiley +1 more source
Metric properties of Outer Space [PDF]
Publicacions Matemàtiques, 2011 We define metrics on Culler-Vogtmann space, which are an analogue of the Teichmuller metric and are constructed using stretching factors. In fact the metrics we study are related, one being a symmetrised version of the other. We investigate the basic properties of these metrics, showing the advantages and pathologies of both choices.
FRANCAVIGLIA, STEFANO, A. Martino
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An Inkjet‐Printed Platinum‐Based Temperature Sensing Element on Polyimide Substrates
Advanced Engineering Materials, EarlyView.An inkjet‐printed, meander‐structured, nanoparticle platinum‐based resistive temperature sensors on polyimide substrates are demonstrated as proof‐of‐concept. Optimized sintering at 250°C enables stable conductive structures. The Pt100‐ and Pt1000‐type sensors exhibit linear resistance–temperature characteristics with stable TCR in the 20°C–80°C range,
Shawon Alam +6 more
wiley +1 more source
PING-PONG AND OUTER SPACE [PDF]
Journal of Topology and Analysis, 2010 We prove that, if φ, ψ ∈ Out (FN) are hyperbolic iwips (irreducible with irreducible powers) such that 〈φ, ψ〉 ⊆ Out (FN) is not virtually cyclic, then some high powers of φ and ψ generate a free subgroup of rank two for which all nontrivial elements are again hyperbolic iwips.
Kapovich, Ilya, Lustig, Martin
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, 1973 A pressure suit for high altitude flights, particularly space missions is reported. The suit is designed for astronauts in the Apollo space program and may be worn both inside and outside a space vehicle, as well as on the lunar surface.
Bessette, R. J. +7 more
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A compactification of outer space which is an absolute retract [PDF]
, 2018 We define a new compactification of outer space $CV_N$ (the \emph{Pacman compactification}) which is an absolute retract, for which the boundary is a $Z$-set. The classical compactification $\overline{CV_N}$ made of very small $F_N$-actions on $\mathbb{R}
Bestvina, Mladen, Horbez, Camille
core +3 more sources
Advanced Engineering Materials, EarlyView.Microstructural evolution and hardness optimization along the cross‐section of friction stir welded AA6061/AlSi10MgMn joints, for electric vehicle battery housings, were investigated. Postweld aging between 170°C and 220°C enhances hardness uniformity within the nugget zone.
Emanuele Ghio, Emanuela Cerri
wiley +1 more source