Results 131 to 140 of about 18,287 (310)
AlgorithmsCircular antenna arrays (CAAs) find extensive utility in a range of cutting-edge communication applications such as 5G networks, the Internet of Things (IoT), and advanced beamforming technologies.
Vikas Mittal +5 more
doaj +1 more source
The Gut–Heart Axis in Systemic Sclerosis: Evidence From a Large Prospective Early Disease Cohort
Arthritis Care &Research, EarlyView.Objective Cardiac involvement significantly impacts prognosis in systemic sclerosis (SSc), highlighting the need for early risk stratification. Gastrointestinal (GI) symptoms are common and often manifest early. Emerging data suggest a link between GI and cardiac manifestations, possibly through shared mechanisms like dysautonomia.
Francesca R. Di Ciommo +9 more
wiley +1 more source
Circular Loudspeaker Array with Controllable Directivity [PDF]
, 2010 Specific directivity patterns for circular arrays of loudspeakers can be achieved by utilizing the concept of phase-modes, which expands the directivity pattern into a series of circular harmonics.
Agerkvist, Finn T. +4 more
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Near-Field PSHA with Directivity – Dorud [PDF]
This study investigates the probabilistic seismic hazard in Dorud city, located near the active Dorud fault, with a specific focus on incorporating near-field and rupture directivity effects into the hazard modeling framework. Near-field ground motions –
Maleki, Behzad +3 more
core +1 more source
Радіоелектронні і комп'ютерні системиThe subject of this article is the design and optimization of the geometric configuration of omnidirectional MEMS microphone arrays for sound localization tasks. The goal is to determine the most effective array architecture and beamforming algorithms to
Andrii Riabko +4 more
doaj +1 more source
A Compact Spin‐Coated Graphene UWB Antenna for Breast Tumor Detection
Advanced Engineering Materials, EarlyView.A compact, spin‐coated graphene ultra‐wideband patch antenna designed for breast tumor detection, capable of distinguishing between malignant and benign tumors. This innovative antenna can serve as an effective initial screening tool, particularly in resource‐limited settings such as rural areas, where access to advanced medical equipment like MRI and ...
Raja Rashidul Hasan +9 more
wiley +1 more source
Designing of a dual-band printed reflectarray based on the modified Floque cell
Известия высших учебных заведений России: Радиоэлектроника, 2015 Method of designing of a dual-band printed reflectarray with improved characteristics is described. Calculated data for printed reflectarrays based on the modified and common Floque cell are presented.
S. V. Ballandovich
doaj
Advanced Engineering Materials, EarlyView.A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora +4 more
wiley +1 more source
Directivity of Railway Noise Sources [PDF]
, 2006 In the Harmonoise project the description of vertical and horizontal directivities of railway noise sources has been required. Other features of the source description are sound power level spectra in third octave bands as a function of speed and the ...
Zhang, Xuetao
core
J Replacement and Direct Roots of Direct Powers in Direct Products
Journal of Algebra, 1995 This article is a continuation of the author's previous works and dedicated to studying the replaceability properties of the direct product of groups. Here is the main definition. Let \(J\) be the infinite cyclic group and let \(\times^n C\) denote the direct product of \(n\) copies of the group \(C\). Consider the statements (1.1) \(J\times C\approx J\
openaire +2 more sources