Results 11 to 20 of about 3,717,413 (296)

On the spectral factor ambiguity of FIR energy compaction filter banks [PDF]

open access: yes, 2006
This paper focuses on the design of signal-adapted finite-impulse response (FIR) paraunitary (PU) filter banks optimized for energy compaction (EC). The design of such filter banks has been shown in the literature to consist of the design of an optimal ...
Tkacenko, Andre, Vaidyanathan, P. P.
core   +1 more source

Research on Regularities of Cyclic Air Motion through a Respirator Filter

open access: yesApplied Sciences, 2021
In this paper, a solution to the problem of the change in the pressure drop in a respirator filter during cyclic air motion is suggested since the current theory of filtering is based on steady-flow processes.
Oleg Bazaluk   +7 more
doaj   +1 more source

Surface Modification of Polypropylene Yarns with SiO2 Sol-Gel: A Novel Approach to Enhance Thermal and Hydrophilic Properties for Depth Filter Applications [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering
Today, the use of polypropylene surface modification to increase thermal and mechanical properties has attracted much attention. Many methods have been proposed to improve surface filters, but these techniques are not typically suitable for depth filters.
Safoora Karimi   +2 more
doaj   +1 more source

Choice of cerebral protection devices for carotid stenting

open access: yesВестник медицинского института «Реавиз»: Реабилитация, врач и здоровье, 2021
The article analyzes a retrospective analysis of long-term results of 316 carotid stentings performed in patients with atherosclerotic stenosis of the extracranial parts of the internal carotid arteries using various types of cerebral protection devices –
A. O. Korobkov   +3 more
doaj   +1 more source

On the study of four-parallelogram filter banks [PDF]

open access: yes, 1996
The most commonly used 2-D filter banks are separable filter banks, which can be obtained by cascading two 1-D filter banks in the form of a tree. The supports of the analysis and synthesis filters in the separable systems are unions of four rectangles ...
Lin, Yuan-Pei, Vaidyanathan, P. P.
core   +1 more source

Recent advances in connected and automated vehicles

open access: yesJournal of Traffic and Transportation Engineering (English ed. Online), 2019
Connected and automated vehicle (CAV) is a transformative technology that has great potential to change our daily life. Therefore, CAV related research has been advanced significantly in recent years.
David Elliott, Walter Keen, Lei Miao
doaj   +1 more source

Optimal sizing of C-type passive filters under non-sinusoidal conditions [PDF]

open access: yes, 2014
In the literature, much attention has been focused on power system harmonics. One of its important effects is degradation of the load power factor. In this article, a C-type filter is used for reducing harmonic distortion, improving system performance ...
Dugan R. C.   +4 more
core   +2 more sources

Locus filters

open access: yesOptics Express, 2022
In this paper, directly following from Gage [J. Opt. Soc. Am.23,46(1993)10.1364/JOSA.23.000046], we study the design of a particular theoretical filter for photography, that we call the locus filter. It is built in such a way that a Wien-Planckian light (of any temperature) is spectrally mapped to another Wien-Planckian light.
Rada Deeb, Graham Finlayson
openaire   +4 more sources

Case Report: Analysis of energy consumption at processing of agricultural production by using an autoclave on a farm

open access: yesAgraarteadus, 2019
The purpose of this article is to analyze the causes and distribution of autoclave energy consumption between the various stages of the technological process and identify ways to reduce energy costs.
Veli Palge, Andres Grigor
doaj   +1 more source

The performance of Adsorbing and Removing gaseous acetic acid by activate carbon [PDF]

open access: yesE3S Web of Conferences
Currently, gaseous molecular contaminants (acetic acid) is one of the main factors that cause defects in semiconductors and wafers, reduce product yields in high-tech process plants.
Hsu Chen-Fu   +2 more
doaj   +1 more source

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