Results 41 to 50 of about 505,352 (366)
Research on Tensile Behaviour of New Structural Material MoNiCa
Medžiagotyra, 2019 This article presents the results of a set of innovative research to analyse a new structural material – steel like austempered ductile cast iron with mechanical properties similar to heat-treated steel, and with technological and exploitation ...
Aliaksandr BAHDANOVICH +12 more
doaj +1 more source
From Local Pseudorandom Generators to Hardness of Learning [PDF]
arXiv, 2021 We prove hardness-of-learning results under a well-studied assumption on the existence of local pseudorandom generators. As we show, this assumption allows us to surpass the current state of the art, and prove hardness of various basic problems, with no hardness results to date.
arxiv
Myths about new ultrahard phases: Why materials that are significantly superior to diamond in elastic moduli and hardness are impossible [PDF]
Journal of Applied Physics, 2018 Reports published in the last 25 years on the synthesis of carbon-based materials significantly superior to diamond in hardness and elastic properties have been critically examined, and three groups of recently appearing myths have been analyzed.
V. Brazhkin, V. Solozhenko
semanticscholar +1 more source
Metals, 2017 This study aimed to investigate the relationship between the surface mechanical properties and the grindability of Ti alloys. Binary Ti alloys containing 5 wt % concentrations of Al, Cr, Sn, or V were prepared using a vacuum arc melting furnace, and ...
Hae-Soon Lim +5 more
doaj +1 more source
Electronic Notes in Theoretical Computer Science, 2008 We present a simple system of four symbols and seven rules that can be used to translate a subclass of graph relabeling systems called hard interaction nets.
Béchet, Denis, Lippi, Sylvain
openaire +4 more sources
Performance analysis of control allocation using data‐driven integral quadratic constraints
Advanced Control for Applications, Volume 4, Issue 4, December 2022., 2022 Abstract A new method is presented for evaluating the performance of a nonlinear control allocation system within a linear control loop. To that end, a worst‐case gain analysis problem is formulated that can be readily solved by means of well‐established methods from robustness analysis using integral quadratic constraints (IQCs).
Manuel Pusch +2 more
wiley +1 more source
Unifying and Strengthening Hardness for Dynamic Problems via the Online Matrix-Vector Multiplication Conjecture [PDF]
Symposium on the Theory of Computing, 2015 Consider the following Online Boolean Matrix-Vector Multiplication problem: We are given an n x n matrix M and will receive n column-vectors of size n, denoted by v1, ..., vn, one by one.
Monika Henzinger +3 more
semanticscholar +1 more source
Metals, 2012 In this work, a Mg-5Nb metal–metal composite was reinforced with nano SiC (SiCn) ceramic reinforcement of varying volume fractions, using the disintegrated melt deposition technique.
Manoj Gupta +4 more
doaj +1 more source
Creep Characterization of Inconel 718 Lattice Metamaterials Manufactured by Laser Powder Bed Fusion
Advanced Engineering Materials, EarlyView., 2023 Herein, the creep characteristics of additively manufactured Inconel 718 metamaterials are investigated. The creep behavior of metamaterials and the effects of microstructural defects are assessed, and the microstructure defects are accurately captured using Kachanov's creep damage model.
Akash Singh Bhuwal +5 more
wiley +1 more source
Insight-HXMT Detections of Hard X-ray Tails in Scorpius X-1 [PDF]
, 2022 Using the observations of the high-energy (HE) detector of the Hard X-ray Modulation Telescope (Insight-HXMT) for Scorpius X-1 in 2018, we search for hard X-ray tails in the hard X-ray spectra in ~30-200 keV. The hard X-ray tails are found throughout the Z-track on the hardness-intensity diagram and they harden and fade away from the horizontal branch (
arxiv +1 more source