Results 81 to 90 of about 505,352 (366)
Metals, 2016 Materials used in abrasive wear conditions are usually selected according to their microstructure and hardness, however, other factors such as grain size, matrix saturation, carbides size and morphology are rarely considered. Therefore, the present study
Martin Orečný +3 more
doaj +1 more source
A Note on Hardness Frameworks and Computational Complexity of Xiangqi and Janggi [PDF]
arXiv, 2019 We review NP-hardness framework and PSPACE-hardness framework for a type of 2D platform games. We introduce a EXPTIME-hardness framework by defining some new gadgets. We use these hardness frameworks to analyse computational complexity of Xiangqi (Chinese Chess) and Janggi (Korean Chess).
arxiv
Small genome symbiont underlies cuticle hardness in beetles
Proceedings of the National Academy of Sciences of the United States of America, 2017 Significance Beetles are successful in the terrestrial ecosystem, which is attributable to, at least partly, their highly sclerotized exoskeleton. Here, we report a bacterial symbiont extremely specialized for underpinning the beetle’s hardness.
H. Anbutsu +16 more
semanticscholar +1 more source
Infection and Drug Resistance, 2020 Habtamu Abuye,1 Woldemichael Abraham,2 Selass Kebede,1 Ramanjireddy Tatiparthi,3,4 Sultan Suleman4,5 1Department of Pharmacy, College of Medicine and Health Sciences, Wachemo University, Hossana, Ethiopia; 2Department of Pharmacy, College of Medicine and
Abuye H +4 more
doaj
Metals, 2019 Plates (37 mm thick) of 6005A-T6 aluminum alloy were butt joined by a single-sided and double-sided friction stir welding (FSW). The 3D residual stresses in the joints were determined using neutron diffraction. The microstructures were characterized by a
Xiaolong Liu +8 more
doaj +1 more source
Dual-Branch Network with Dual-Sampling Modulated Dice Loss for Hard Exudate Segmentation from Colour Fundus Images [PDF]
arXiv, 2020 Automated segmentation of hard exudates in colour fundus images is a challenge task due to issues of extreme class imbalance and enormous size variation. This paper aims to tackle these issues and proposes a dual-branch network with dual-sampling modulated Dice loss.
arxiv
Cerâmica, 2005 This work investigated the substitution of Y2O3 for CeO2 in liquid-phase sintered silicon nitride ceramics. Cost reduction as well as good physical, mechanical and microstructural properties are the main objectives of the present study.
J. V. C. de Souza +6 more
doaj +1 more source
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose To compare plan quality among photon volumetric modulated arc therapy (VMAT) and intensity‐modulated proton therapy (IMPT) with robustness using three different proton beam delivery systems with various spot size (σ) ranges: cyclotron‐generated proton beams (CPBs) (σ: 2.7–7.0 mm), linear accelerator proton beams (LPBs) (σ: 2.9–5.5 mm),
Tara Gray +9 more
wiley +1 more source
Closing the gap in plan quality: Leveraging deep‐learning dose prediction for adaptive radiotherapy
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose Balancing quality and efficiency has been a challenge for online adaptive therapy. Most systems start the online re‐optimization with the original planning goals. While some systems allow planners to modify the planning goals, achieving a high‐quality plan within time constraints remains a common barrier.
Sean J. Domal +9 more
wiley +1 more source
Hardness Magnification for Natural Problems
IEEE Annual Symposium on Foundations of Computer Science, 2018 We show that for several natural problems of interest, complexity lower bounds that are barely non-trivial imply super-polynomial or even exponential lower bounds in strong computational models. We term this phenomenon "hardness magnification".
I. Oliveira, R. Santhanam
semanticscholar +1 more source