Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: acoustic wave scattering

Sortuj według:

Ogranicz wyniki do:

Outlier phenomenon in data interpretation for one waves scattering problem

Emets V. F., Rogowski J.

Journal of Applied Computer Science

2017

Vol. 25, nr 2

43--51

An outlier is an observation (or measurement) that is different with respect to the other values contained in a given data set. Outliers can occur due to several causes. The measurement can be incorrectly observed, recorded or processed or otherwise is correctly measured but represents a rare event. In this paper it is shown that observed data can contain values that differ from expected ones and can be interpreted as an outlier, but in fact are caused by a specific physical phenomenon.

Design, Manufacture and Characterization of an Acoustic Barrier Made of Multi-Phenomena Cylindrical Scatterers Arranged in a Fractal-Based Geometry

Casteneira-Ibanez S., Rubio C., Romero-Garcia V., Sanchez-Perez J. V., Garcia-Raffi L. M.

Archives of Acoustics

2012

Vol. 37, No. 4

455-462

In this work we present the design and the manufacturing processes, as well as the acoustics standard- ization tests, of an acoustic barrier formed by a set of multi-phenomena cylindrical scatterers. Periodic arrangements of acoustic scatterers embedded in a fluid medium with different physical properties are usually called Sonic Crystals. The multiple scattering of waves inside these structures leads to attenuation bands related to the periodicity of the structure by means of Bragg scattering. In order to design the acoustic barrier, two strategies have been used: First, the arrangement of scatterers is based on fractal geometries to maximize the Bragg scattering; second, multi-phenomena scatterers with several noise con- trol mechanisms, as resonances or absorption, are designed and used to construct the periodic array. The acoustic barrier reported in this work provides a high technological solution in the field of noise control.