Results 121 to 130 of about 158,314 (299)

Weak stability of switching dynamical systems and fast computation of the p-radius of matrices

open access: yes, 2010
The stability of a switching linear dynamical system is ruled by the so-called joint spectral radius of the set of matrices characterizing the dynamical system.
Protasov, Vladimir   +3 more
core   +1 more source

Molecular Dynamics Studies of Shape Memory Polymers: From Bead–Spring Models to Atomistic Simulations

open access: yesAdvanced Engineering Materials, EarlyView.
Coarse‐grained (left) and atomistic (right) models of the shape memory polymer ESTANE ETE 75DT3 are shown schematically. The two representations bridge molecular detail and mesoscopic description. Both models capture shape memory behavior, linking segmental mobility and conformational relaxation of anisotropic chains to macroscopic recovery, and ...
Fathollah Varnik
wiley   +1 more source

Theory of Turbulent Equilibrium Spheres with Power-law Linewidth–Size Relation

open access: yesThe Astrophysical Journal
Dense cores inherit turbulent motions from the interstellar medium in which they form. As a tool for comparison to both simulations and observations, it is valuable to construct theoretical core models that can relate their internal density and velocity ...
Sanghyuk Moon, Eve C. Ostriker
doaj   +1 more source

Interpretability Evaluation Method for Driving Stability on Curved Road Sections with Trajectory Uncertainty

open access: yesVehicles
This study was conducted in order to enrich the safety evaluation system of vehicles on complex road sections and provide quantitative support for speed control and driving decision-making.
Xiaoyang Li   +5 more
doaj   +1 more source

Encyclopedia of 2D β′‐In2Se3 Growth Using Chemical Vapor Deposition: The Effects of Synthesis Parameters Onto Material Quality

open access: yesAdvanced Engineering Materials, EarlyView.
A distinct semi‐confined inner‐tube chemical vapor deposition geometry enables reproducible, large‐area growth of phase‐pure 2D β′‐In2Se3 from InI + Se precursors. Engineering local vapor transport and optimizing precursor delivery and temperature–time conditions yield uniform continuous films.
Dasun P. W. Guruge   +8 more
wiley   +1 more source

On the effects of tool nose radius in alleviating parasitic mechanisms for cutting of aluminum alloy

open access: yesAdvances in Mechanical Engineering
Despite extensive research and process advancements, parasitic mechanisms such as chatter, excessive tool wear, and energy dissipation continue to undermine the efficiency and sustainability of machining processes.
Sweta Baruah   +3 more
doaj   +1 more source

Influence of Surface Finish on the Tribological Performance of AlTiBN Coatings Deposited on Forming Tools

open access: yesAdvanced Engineering Materials, EarlyView.
Aluminum and nitride coatings are used in industry because they are hard, resist wear, and protect against oxidation. Adding boron can improve friction behavior and other properties. This study tests coatings on surfaces with different finishes. Results show smoother surfaces perform better, while rough ones wear faster, although coatings can reduce ...
Adrián Claver   +9 more
wiley   +1 more source

Real structural stability radius of infinite-dimensional linear systems: Its estimate

open access: yes, 2002
The real structural stability radius of infinite-dimensional linear systems was analyzed. A metric similar to the Frobenius norm of matrices was introduced on the set of linear bounded operators.
Bulatov A.V., Diamond P.
core   +1 more source

Experimental Characterization and Constitutive Modeling of the Effect of Prior Inelastic Strain on the Viscoplastic Behavior of AD730 at 700 °C

open access: yesAdvanced Engineering Materials, EarlyView.
This study shows that superalloys used in aircraft engine disks become much more prone to deformation at high temperatures if they have been strained during manufacturing. This effect increases with the level of prior strain but eventually reaches a limit.
Fabio Machado Alves da Fonseca   +9 more
wiley   +1 more source

Quasi-geostrophic shallow-water doubly-connected vortex equilibria and their stability

open access: yes, 2013
H.P. acknowledges the support of a NERC studentship. D.G.D. received support for this research from the UK Engineering and Physical Sciences Research Council (grant EP/H001794/1).We examine the form, properties, stability and evolution of doubly ...
Dritschel, David Gerard, Plotka, Hanna
core   +1 more source

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