Results 101 to 110 of about 327,042 (281)

A Novel Approach for Image Enhancement via Nonsubsampled Contourlet Transform

open access: yesJournal of Intelligent Systems, 2014
An improved image enhancement approach via nonsubsampled contourlet transform (NSCT) is proposed in this article. We constructed a geometric image transform by combining nonsubsampled directional filter banks and a nonlinear mapping function.
Tan Yunlan   +4 more
doaj   +1 more source

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

open access: yesAdvanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti   +11 more
wiley   +1 more source

An Analysis of Wrist Motions During Daily Activities From a Directional Perspective: The Significance of Directions Beyond the Dart‐Throwing Motion

open access: yesOrthopaedic Surgery
Background Previous studies on Activities of Daily Living (ADL) suggest that the wrist demonstrates different ranges of motion and frequencies in various directions. However, the specific directional characteristics of wrist activities remain unexplored.
Qipei Wei   +6 more
doaj   +1 more source

Crystal structure of 2-cyclohexyl-1,3-thiazolo[4,5-b]pyridine

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
In the title compound, C12H14N2S, the cyclohexane ring adopts a chair conformation with the exocyclic C—C bond in an equatorial orientation. The mean plane through the cyclohexane ring (all atoms) is twisted from the thiazolopyridine ring system (r.m.s ...
Gamal A. El-Hiti   +4 more
doaj   +1 more source

A conceptual design tool: Sketch and fuzzy logic based system [PDF]

open access: yes, 2001
A real time sketch and fuzzy logic based prototype system for conceptual design has been developed. This system comprises four phases. In the first one, the system accepts the input of on-line free-hand sketches, and segments them into meaningful parts ...
Jordanov, IN, Qin, SF, Wright, DK
core  

Nanoindentation Criteria for Combinatorial Thin Film Libraries

open access: yesAdvanced Engineering Materials, EarlyView.
Thin‐film material libraries are compositional spreads used for screening composition‐structure‐property relationships. Nanoindentation is often used to characterize mechanical behavior across these systems, however variations in methodology are widespread.
Andre Bohn, Adie Alwen, Andrea M. Hodge
wiley   +1 more source

Influence of non-directional errors in anthropometric measurements and age estimation on anthropometric prevalence indicators.

open access: yesPLoS ONE
Anthropometric prevalence indicators such as stunting, wasting, and underweight are widely-used population-level tools used to track trends in childhood nutrition.
Joseph M Grange   +2 more
doaj   +1 more source

A Novel Focal Length Measurement Method for Center-Obstructed Omni-Directional Reflective Optical Systems

open access: yesApplied Sciences, 2019
An omni-directional optical system can be used as a surveillance camera owing to its wide field angle. In cases in which a system is designed with a central screen obscuring structure to increase the resolution of the off-axis field, however, the ...
Hojong Choi, Joo-Youn Jo, Jae-Myung Ryu
doaj   +1 more source

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

open access: yesAdvanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm   +3 more
wiley   +1 more source

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

open access: yesAdvanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa   +9 more
wiley   +1 more source

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