Results 61 to 70 of about 625,188 (172)

Problems of locomotive wheel wear in fleet replacement

Nauka ta progres transportu, 2013
Purpose. To conduct a research and find out the causes of defects appearing on the wheel thread of freight locomotives 2М62 and SIEMENS ER20CF. Methodology.
L.P. Lingaytis, G. Gelumbіtskas, G. Vaychunas   +2 more
doaj  

Sensitivity study of crack driving force predictions in heterogeneous welds using Vickers hardness maps [PDF]

, 2016
Weld flaws often require an engineering critical assessment (ECA) to judge on the necessity for weld repair. ECA is a fracture mechanics based prediction of the integrity of welds under operating conditions.
De Waele, Wim, Hertelé, Stijn, Naib, Sameera, Van Minnebruggen, Koen   +3 more
core  

Almost Settling the Hardness of Noncommutative Determinant [PDF]

, 2011
In this paper, we study the complexity of computing the determinant of a matrix over a non-commutative algebra. In particular, we ask the question, "over which algebras, is the determinant easier to compute than the permanent?" Towards resolving this ...
Chien, Steve, Harsha, Prahladh, Sinclair, Alistair, Srinivasan, Srikanth   +3 more
core   +2 more sources

Biophysical and Morphometric Characteristics of Sunflower Achenes: Implications for Industrial Processing and Byproduct Utilization

Agronomy
The main focus of industrial sunflower processing is oil production, in which the pericarp is most often treated as a byproduct or biological waste. However, sunflower pericarps have shown significant potential for alternative applications.
Jelena Ovuka, Jelena Jocković, Milan Jocković, Siniša Jocić, Sonja Gvozdenac, Miloš Krstić, Dušica Jovičić   +6 more
doaj   +1 more source

Machine Learning-Enabled Prediction and Mechanistic Analysis of Compressive Yield Strength–Hardness Correlation in High-Entropy Alloys

Metals
High-entropy alloys (HEAs) represent a paradigm-shifting material system offering vast compositional space for tailoring mechanical properties. The yield strength and hardness are critical performance metrics, yet their interrelationships in diverse HEAs
Haiyu Wan, Baobin Xie, Hui Feng, Jia Li
doaj   +1 more source

Average-case Hardness of RIP Certification [PDF]

, 2016
The restricted isometry property (RIP) for design matrices gives guarantees for optimal recovery in sparse linear models. It is of high interest in compressed sensing and statistical learning.
Berthet, Quentin, Plan, Yaniv, Wang, Tengyao   +2 more
core   +1 more source

Dynamic Hardness Tester and Cure Meter [PDF]

, 1993
The Shore hardness tester is used extensively throughout industry to determine the static modulus of materials. The new apparatus described here extends the capability of an indentor-type tester into the dynamic regime, and provides a measurement of the ...
Fiorito, Ralph B., Madigosky, Walter M.
core   +1 more source

On the Quantitative Hardness of CVP

, 2017
$ \newcommand{\eps}{\varepsilon} \newcommand{\problem}[1]{\ensuremath{\mathrm{#1}} } \newcommand{\CVP}{\problem{CVP}} \newcommand{\SVP}{\problem{SVP}} \newcommand{\CVPP}{\problem{CVPP}} \newcommand{\ensuremath}[1]{#1} $For odd integers $p \geq 1$ (and $p
Bennett, Huck, Golovnev, Alexander, Stephens-Davidowitz, Noah   +2 more
core   +1 more source

NP-hardness of hypercube 2-segmentation [PDF]

, 2014
The hypercube 2-segmentation problem is a certain biclustering problem that was previously claimed to be NP-hard, but for which there does not appear to be a publicly available proof of NP-hardness.
Feige, Uriel
core  

Wire EDM Process of AISI 431 Martensitic Stainless Steel: A Machinability Investigation

Engineering Proceedings
The wire EDM process for AISI 431 martensitic stainless steel involves meticulously investigating its machinability. This study explores the intricate details of the machining process, considering factors such as material characteristics and cutting ...
Balasubramaniyan Chandrasekaran, Santosh Sampath, Arun Anbalagan, Vengatesh Paneerselvam, Vignesh Karthick   +4 more
doaj   +1 more source