Results 81 to 90 of about 3,339,071 (292)

Deterministic Detection of Single Ion Implantation

Advanced Engineering Materials, EarlyView.
Focused ion beam implantation with high detection efficiencies will enable the rapid and scalable fabrication of advanced spin‐based technologies such as qubits. This work presents the detection efficiencies of a wide range of ions implanted into solid‐state hosts, with efficiencies of >90% recorded for ion species and substrate combinations of ...
Mason Adshead, Lok Kan Wan, Maddison Coke, Janet Jacobs, Nicholas F. L. Collins, Mark C. Rosamond, Richard J. Curry   +6 more
wiley   +1 more source

The Perfect in (Brazilian) Portuguese: A Functional Discourse Grammar View

Open Linguistics, 2018
In most Germanic and Romance languages the present perfect has developed from a resultative meaning via an anterior into absolute past. In Functional Discourse Grammar terms this corresponds to the grammaticalization of a phasal aspectual operator at the
Olbertz Hella
doaj   +1 more source

Product Constructions for Perfect Lee Codes

, 2011
A well known conjecture of Golomb and Welch is that the only nontrivial perfect codes in the Lee and Manhattan metrics have length two or minimum distance three. This problem and related topics were subject for extensive research in the last forty years.
Etzion, Tuvi
core   +1 more source

Robust Spot Melting by 3D Spot Arrangements in Electron Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
This work proposes an approach to replace separately melted contours for spot melting in electron beam powder fusion. Adapting the spot arrangements close to the contour combined with stacking yields a comparable surface quality without the inherent challenges of separate contours, as demonstrated, by electron optical images and roughness measurements.
Tobias Kupfer, Lukas Spano, Sebastian Pohl, Carolin Körner, Matthias Markl   +4 more
wiley   +1 more source

Multimodal Data‐Driven Microstructure Characterization

Advanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang, Santiago Benito, Özge Özgün, Sebastian Weber, Markus Stricker   +4 more
wiley   +1 more source

«Perfect» lions, «perfect» leaders

Journal des africanistes, 1983
Abstract In studying lion symbolism among the Tabwa (southeastern Zaïre), the author demonstrates the fact that, although this symbolism may have been diffused in Africa from Europe in the Paleolithic age (suggestion of Frobenius), metaphors or other items of culture are adopted only if they allow people to understand and explain some aspects of their ...
openaire   +2 more sources

Dynamic Games with Almost Perfect Information [PDF]

, 2015
This paper aims to solve two fundamental problems on finite or infinite horizon dynamic games with perfect or almost perfect information. Under some mild conditions, we prove (1) the existence of subgame-perfect equilibria in general dynamic games with ...
He, Wei, Sun, Yeneng
core   +1 more source

Evaluation of Plasticity and Creep Parameters From Tensile Stress–Strain Data for a Range of Strain Rates

Advanced Engineering Materials, EarlyView.
This plot compares experimental tensile stress–strain curves (with 4 different strain rates) and corresponding modelled curves (obtained using the optimised sets of Voce and Miller–Norton parameter values shown). The inferred M‐N values, characterizing the creep, are very similar to those obtained via conventional creep testing.
S. Ooi, R. P. Thompson, T. W. Clyne
wiley   +1 more source

A spherical perfect lens

, 2003
It has been recently proved that a slab of negative refractive index material acts as a perfect lens in that it makes accessible the sub-wavelength image information contained in the evanescent modes of a source.
A. Grbic, A. Grbic, A.A. Houck, C.G. Parazzoli, D.R. Smith, D.R. Smith, G. Gomez-Santos, J. B. Pendry, J.B. Pendry, J.B. Pendry, J.B. Pendry, J.B. Pendry, J.B. Pendry, J.B. Pendry, J.B. Pendry, J.T. Shen, M.C.K. Wiltshire, M.C.K. Wiltshire, N. Fang, N. Garcia, R.A. Shelby, S. Anantha Ramakrishna, S. Foteinopolou, S.A. Ramakrishna, S.A. Ramakrishna, S.A. Ramakrishna, V.G. Veselago, V.V. Klimov, X.S. Rao, Z. Liu, Z. Ye   +30 more
core   +1 more source

In Situ Micromechanical Study of Bimodal γ′–γ″ Precipitate Assemblies in Ni–Cr–Al–Nb Superalloy

Advanced Engineering Materials, EarlyView.
A Ni–Cr–Al–Nb superalloy with a bimodal γ′–γ″ precipitate distribution is developed. Composite precipitate assemblies form through heterogeneous nucleation, effectively impeding dislocation motion. Micropillar compression reveals high strength at room and elevated temperatures, governed by precipitate shearing, with coupled faulting mechanisms ...
Ujjval Bansal, Tae‐Hyeok Kang, Pyuck‐Pa Choi, Subin Lee, Christoph Kirchlechner   +4 more
wiley   +1 more source