Results 31 to 40 of about 273,016 (273)
A novel technique for wide-field polarimetry with a radiotelescope array [PDF]
, 2005 We report the use of the Australia Telescope Compact Array (ATCA) to conduct polarimetric observations of the sky at 5 GHz. The ATCA is normally operated as an interferometer array, but these observations were conducted in a split array mode in which the
Carretti, E. +2 more
core +3 more sources
Sensors, 2019 It has been reported that the frequency bandwidth of capacitive micro-machined ultrasonic transducers (CMUTs) is relatively broader than that of other ceramic-based conventional ultrasonic transducers.
Bae-Hyung Kim +2 more
doaj +1 more source
Constructions of augmented orthogonal arrays [PDF]
Journal of Combinatorial Designs, 2018 AbstractAugmented orthogonal arrays (AOAs) were introduced by Stinson, who showed the equivalence between ideal ramp schemes and AOAs (Discrete Math. 341 (2018), 299–307). In this paper, we show that there is an AOAif and only if there is an OAwhich can be partitioned intosubarrays, each being an OA, and that there is a linear AOAif and only if there ...
Xin Wang, Lijun Ji, Yun Li, Miao Liang
openaire +3 more sources
Separation of Parallel Encoded Complex-Valued Slices (SPECS) From A Single Complex-Valued Aliased Coil Image [PDF]
, 2016 Purpose Achieving a reduction in scan time with minimal inter-slice signal leakage is one of the significant obstacles in parallel MR imaging. In fMRI, multiband-imaging techniques accelerate data acquisition by simultaneously magnetizing the spatial ...
Bruce, Iain P. +4 more
core +2 more sources
One-Dimensional Beam Scanning Transmitarray Lens Antenna Fed by Microstrip Linear Array
IEEE Access, 2019 This paper proposed a one-dimensional beam scanning transmitarray lens antenna fed by a microstrip linear array antenna which owns a wide pattern in the plane orthogonal to the array axis and a narrow pattern in the plane that includes the array axis ...
Na Kou +3 more
doaj +1 more source
The Optimization of Mix Proportion of Hot Mix Asphalt for Sustainable Flexible Pavements: Experimental Study and Grey Taguchi Relational Analysis [PDF]
Journal of Soft Computing in Civil Engineering, 2023 Most of the Indian black topped roads have been damaged due to adverse weather and heavy load distresses. Many researchers have focused on improving durability of Hot Mix Asphalt (HMA) pavements.
Samanasa Krishna Rao, P. Sravana
doaj +1 more source
The Lattice of N-Run Orthogonal Arrays [PDF]
, 2002 If the number of runs in a (mixed-level) orthogonal array of strength 2 is specified, what numbers of levels and factors are possible? The collection of possible sets of parameters for orthogonal arrays with N runs has a natural lattice structure ...
Rains, E. M. +2 more
core +3 more sources
A 2D ultrasonic array design incorporating hexagonal-shaped elements for NDE applications [PDF]
, 2010 Contemporary 2D Ultrasonic arrays suffer from low SNR and limited steering capabilities. Yet, there is a great desire in the industry to increase the operational frequency, in order to enhance their volumetric imaging resolution.
Dziewierz, J. +4 more
core +1 more source
Optimization and Prediction of Reaction Parameters of Plastic Pyrolysis oil Production Using Taguchi Method [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 2020 Design of Experiments (DoE) is a powerful guiding tool that can help researchers to identify the main variables that affect the performance characteristics.
Gopinath S, Devan P.K..
doaj +1 more source
Metals, 2020 The use of aluminum alloys, nowadays, is swiftly growing from the prerequisite of producing higher strength to weight ratio. Lightweight components are crucial interest in most manufacturing sectors, especially in transportation, aviation, maritime ...
Assefa Asmare +2 more
doaj +1 more source