Results 11 to 20 of about 198,471 (287)

3D-printed NiFe-layered double hydroxide pyramid electrodes for enhanced electrocatalytic oxygen evolution reaction

open access: yesScientific Reports, 2022
Electrochemical water splitting has been considered one of the most promising methods of hydrogen production, which does not cause environmental pollution or greenhouse gas emissions.
Jinhyuck Ahn   +8 more
doaj   +1 more source

Generating Method of Visual Word Bag Model Based on Binary Hashing and Space Pyramid [PDF]

open access: yesJisuanji gongcheng, 2016
Constructing visual vocabulary in the Bag of Visual Word(BoVW) model is a critical step,most visual vocabulary is generated by the k-means algorithm or its improved algorithm.Because of the limitation of the k-means algorithm and the complexity and the ...
PENG Tianqiang,LI Fang
doaj   +1 more source

Sacred Animals at Saqqara

open access: yesHeritage, 2022
Saqqara, the necropolis of the first capital city of a unified Egypt, is best known today for the Step Pyramid of Pharaoh Djoser (2667–2648 B.C.). However, the Step Pyramid is only the most visible feature of this great burial site, and the tombs of many
Paul T. Nicholson
doaj   +1 more source

Fringe Projection Method for 3D High-Resolution Reconstruction of Oil Painting Surfaces

open access: yesHeritage, 2023
The fringe projection (FP) method is an outstanding tool for reconstructing painted surfaces. This technique, which has been used for conservation and digitization, does not damage the artwork and can reach sub-millimeter accuracy. To carry out this type
María del Carmen Casas Pérez   +5 more
doaj   +1 more source

Step Pyramid Distribution for Prime Numbers

open access: yesJournal of Mathematics Research, 2022
In this document, we will present a new way to visualize the distribution of Prime Numbers in the number system to spot Prime numbers in a subset of numbers using a simpler algorithm. Then we will look throw a classification algorithm to check if a number is prime using only 7 simple arithmetic operations with an algorithm complexity less ...
openaire   +2 more sources

Combined shear/compression structural testing of asymmetric sandwich structures [PDF]

open access: yes, 2004
Asymmetric sandwich technology can be applied in the design of lightweight, non-pressurized aeronautical structures such as those of helicopters. A test rig of asymmetric sandwich structures subjected to compression/shear loads was designed, validated ...
B. Castanié   +11 more
core   +1 more source

Image Structure-Induced Semantic Pyramid Network for Inpainting

open access: yesApplied Sciences, 2023
The existing deep-learning-based image inpainting algorithms often suffer from local structure disconnections and blurring when dealing with large irregular defective images.
Rong Huang, Yuhui Zheng
doaj   +1 more source

A Step Towards Learning Contraction Kernels for Irregular Image Pyramid

open access: yesProceedings of the 11th International Conference on Pattern Recognition Applications and Methods, 2022
A structure preserving irregular image pyramid can be computed by applying basic graph operations (contraction and removal of edges) on the 4 adjacent neighbourhood graph of an image. In this paper, we derive an objective function that classifies the edges as contractible or removable for building an irregular graph pyramid.
Batavia, Darshan   +2 more
openaire   +3 more sources

Saqqara: seasons 2012 and 2013/2014/ Appendix: Conservation work in Saqqara (2012 and 2014) [PDF]

open access: yesPolish Archaeology in the Mediterranean, 2016
After having finished the excavation in a zone located west of the Step Pyramid andspanning the area between the pyramid enclosure wall and the eastern border of the Dry Moat, thePolish–Egyptian mission started a new project aiming at a complex ...
Karol Myśliwiec   +2 more
doaj   +1 more source

A First Step toward Combinatorial Pyramids in n-D Spaces [PDF]

open access: yes, 2009
Combinatorial maps define a general framework which allows to encode any subdivision of an n-D orientable quasi-manifold with or without boundaries. Combinatorial pyramids are defined as stacks of successively reduced combinatorial maps. Such pyramids provide a rich framework which allows to encode fine properties of the objects (either shapes or ...
Fourey, Sébastien, Brun, Luc
openaire   +2 more sources

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