Results 101 to 110 of about 791,635 (286)
Advanced Engineering Materials, EarlyView.This study investigates how tramp elements from increased scrap usage influence phase transformations in low‐alloyed steel. Combining dilatometry and microscopy reveal that tramp elements delay transformations, reduce critical cooling rates and increase hardenability.
Lukas Hatzenbichler +5 more
wiley +1 more source
Approximately Stable Matchings with General Constraints
, 2019 This paper focuses on two-sided matching where one side (a hospital or firm) is matched to the other side (a doctor or worker) so as to maximize a cardinal objective under general feasibility constraints. In a standard model, even though multiple doctors can be matched to a single hospital, a hospital has a responsive preference and a maximum quota ...
Kawase, Yasushi, Iwasaki, Atsushi
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Advanced Engineering Materials, EarlyView.Cermets (60 vol.% AISI 316L stainless steel, 40 vol.% recycled MgO), intended for use in aluminum electrolysis, were pre‐oxidized in three furnaces with different heating technologies and subjected to a cryolite corrosion test. The different atmospheres influenced the formation of oxide layers, which in turn affected corrosion resistance and ...
Patricia Kaiser +4 more
wiley +1 more source
Powered Descent Guidance via First-Order Optimization With Expansive Projection
IEEE AccessThis paper introduces a first-order method for solving optimal powered descent guidance (PDG) problems, that directly handles the nonconvex constraints associated with the maximum and minimum thrust bounds with varying mass and the pointing angle ...
Jiwoo Choi, Jong-Han Kim
doaj +1 more source
Numerical Exploration of Thermal Shock Resistance in MgO–C Refractories
Advanced Engineering Materials, EarlyView.A mesostructure‐resolved numerical framework is developed to evaluate the thermal shock resistance of MgO–C refractories. By modeling interface debonding under rapid temperature changes and introducing a modified thermal shock parameter that accounts for mesocracks, the study shows how graphite content and aggregate size influence thermal shock ...
Jishnu Vinayak Gopi +3 more
wiley +1 more source
Uniqueness of Best Approximation with Coefficient Constraints
Rocky Mountain Journal of Mathematics, 1993 Let for given \(\alpha= (\alpha_ 1,\dots, \alpha_ n)\) and \(\beta= (\beta_ 1,\dots, \beta_ n)\), with \(-\infty\leq \alpha_ i< \beta_ i\leq\infty\), \(i=1,\dots, n\), and continuous functions \(u_ 1,\dots,u_ n\), set \(U(\alpha,\beta)= \{\sum_{i=1}^ n a_ i U_ i\); \(\alpha_ i\leq a_ i\leq\beta_ i\), \(i=1,\dots, n\}\). In this paper the conditions for
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Analyzing Electronic Excitations and Exciton Binding Energies in Y6 Films
Advanced Functional Materials, EarlyView.The Y6 molecule is used for increasing the efficiency of organic solar cells. The exciton binding energy is calculated for ensembles of Y6 molecules that are representative of the typically used films. The calculations show that the excitons typically spread out over many molecules.
Sahar Javaid Akram +2 more
wiley +1 more source
MathematicsThe demand for thermal power generation from natural gas has increased globally due to its cleaner burning properties compared to other fossil fuels.
Cristian Alejandro Blanco-Martínez +4 more
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Post-Newtonian approximation of teleparallel gravity coupled with a scalar field
Nuclear Physics B, 2015 We use the parameterized post-Newtonian (PPN) formalism to explore the weak field approximation of teleparallel gravity non-minimally coupling to a scalar field ϕ, with arbitrary coupling function ω(ϕ) and potential V(ϕ).
Zu-Cheng Chen, You Wu, Hao Wei
doaj +1 more source
, 2017 The {\it AC Optimal Power Flow} (OPF) problem is a fundamental problem in power systems engineering which has been known for decades. It is a notoriously hard problem due mainly to two reasons: (1) non-convexity of the power flow constraints and (2) the (
Chau, Chi-Kin +2 more
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