Results 31 to 40 of about 9,980,026 (286)

Ultra-Thin, Short-Focus, and High-Aperture Metalens for Generating and Detecting Laser Optical Vortices

open access: yesNanomaterials, 2022
A combined high-aperture metalens in a thin silicon nitride film that consists of two tilted sectored metalenses is considered. Each sector of the metalens consists of a set of binary subwavelength gratings. The diameter of the metalens is 14 μm. Using a
Anton Nalimov, Victor Kotlyar
doaj   +1 more source

Genetically-designed arbitrary length almost difference sets [PDF]

open access: yesElectronics Letters, 2009
Almost difference sets (ADSs) have important applications in cryptography, coding theory, and antenna array thinning. A new approach is proposed to derive ADSs of arbitrary lengths. Such a technique recasts the ADS design as a combinatorial optimisation problem successively solved by means of a suitable binary genetic algorithm. New ADSs are derived to
Oliveri, Giacomo   +2 more
openaire   +3 more sources

Almost continuous Sierpiński–Zygmund functions under different set-theoretical assumptions

open access: yesRevista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas, 2022
AbstractA function $$f:\mathbb {R}\rightarrow \mathbb {R}$$ f : R → R is: almost continuous in the sense of Stallings, $$f\in \textrm{AC}$$ f
Krzysztof Chris Ciesielski   +2 more
openaire   +2 more sources

Blocs, Swarms, and Outliers: Conceptualizing Disagreement on the Modern Supreme Court of Canada

open access: yesOsgoode Hall Law Journal, 2004
Almost half of the Supreme Court of Canada's decisions are not unanimous, but not all disagreement is of a kind. It makes a difference whether the panel's unanimity is broken by a single dissident, by several judges signing a single set of reasons, or by
Peter McCormick
doaj   +1 more source

Manufacturing Method for Large Cylindrical Worm Gear Set of ISO Type I on Universal CNC Machine Tools

open access: yesJournal of Manufacturing and Materials Processing, 2023
Large cylindrical worm gear set of ISO type I are manufactured using endmill tools on universal CNC machine tools. This manufacturing method requires neither special gear-generating machines nor special tools.
Kazumasa Kawasaki, Isamu Tsuji
doaj   +1 more source

Towards accurate rescaling of a halo mass function

open access: yesOpen Astronomy, 2018
We investigate the precision within which a simulated dark matter halo mass function can be rescaled to a different set of cosmological parameters. Our tests show that the accuracy almost linearly depends on the difference of the cosmological parameters ...
Yankelevich Victoria   +1 more
doaj   +1 more source

Evaluation of two cooling devices for construction workers by a thermal manikin

open access: yesFashion and Textiles, 2017
Two kinds of wearable cooling devices were evaluated for their cooling effect by a thermal manikin. All measurements were conducted in a climatic chamber. The cooling fans worked almost 3 h.
Katsuhiro Miura   +2 more
doaj   +1 more source

A simple identification method of wind noise using the difference in wind speed generated inside of the wind screen (Outdoor verification experiment for infrasound)

open access: yesNihon Kikai Gakkai ronbunshu, 2022
Focusing on the difference in wind speed due to different positions in a wind screen, we devised a simple method to recognize wind noise only by the difference in sound pressure level between two microphones placed in the wind screen. First, we conducted
Tetsuya DOI   +3 more
doaj   +1 more source

Selection of morphological features of pollen grains for chosen tree taxa

open access: yesBiology Open, 2018
The basis of aerobiological studies is to monitor airborne pollen concentrations and pollen season timing. This task is performed by appropriately trained staff and is difficult and time consuming.
Agnieszka Kubik-Komar   +2 more
doaj   +1 more source

Response of shoot-root relationship and photosynthetic characteristics of Hydrangea under root restriction

open access: yes上海师范大学学报. 自然科学版, 2022
Three different container sizes were set up to explore the specific responses of Hydrangea to habitat changes in terms of morphology, biomass, photosynthetic characteristics, nitrogen distribution and shoot-root relationship.
SHEN Yajun   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy