The identities of the free product of a pair of two-element monoids
Sign Up to like & getrecommendations! Published in 2019 at "Algebra universalis"
DOI: 10.1007/s00012-019-0587-3
Abstract: Up to isomorphism, there exist two non-isomorphic two-element monoids. We show that the identities of the free product of every pair of such monoids admit no finite basis. read more here.
Keywords: free product; pair; two element; identities free ... See more keywords
A two-element high-lift airfoil in disturbed flow conditions
Sign Up to like & getrecommendations! Published in 2017 at "CEAS Aeronautical Journal"
DOI: 10.1007/s13272-016-0221-4
Abstract: This contribution presents experimental results of a two-element high-lift airfoil in a disturbed inflow. Permanent disturbances are generated by the wakes of two static airfoils located upstream of the research airfoil, one of which is… read more here.
Keywords: high lift; lift airfoil; two element; disturbed flow ... See more keywords
Perfect isolation performance among two-element MIMO antennas
Sign Up to like & getrecommendations! Published in 2019 at "AEU - International Journal of Electronics and Communications"
DOI: 10.1016/j.aeue.2019.05.014
Abstract: Abstract A rectangular microstrip patch (RMSP) antenna is designed to be used in a two-element Multi-Input Multi-Output (MIMO) antennas at which they operate at 5.8 GHz. The two antennas are positioned opposite to each other with… read more here.
Keywords: two element; performance among; perfect isolation; mimo antennas ... See more keywords
The matrix effect in TOF-SIMS analysis of two-element inorganic thin films
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Analytical Atomic Spectrometry"
DOI: 10.1039/c9ja00428a
Abstract: The matrix effect, i.e. the dependence of element ion yield on the surrounding chemical state, is very often considered as a negative and limiting factor in elemental characterization. In fact, it is the main reason… read more here.
Keywords: matrix effect; element; tof sims; two element ... See more keywords
Two element MIMO antenna with frequency reconfigurable characteristics utilizing RF MEMS for 5G applications
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Electromagnetic Waves and Applications"
DOI: 10.1080/09205071.2020.1765883
Abstract: ABSTRACT This paper presents a novel two-element multiple input multiple output (MIMO) reconfigurable antenna that can be switched among 600 MHz, 1.8, 2.4, 3.5, and 5.5 GHz bands. The proposed antenna consists of two semi-circular ring-shaped strip-lines… read more here.
Keywords: mimo antenna; frequency; frequency reconfigurable; antenna ... See more keywords
A new two-element MIMO antenna system for cognitive radio applications
Sign Up to like & getrecommendations! Published in 2021 at "Circuit World"
DOI: 10.1108/cw-06-2020-0101
Abstract: Purpose This study aims to propose a two-element multi-input-multi-output (MIMO) antenna for cognitive radio MIMO applications to avoid the complexities involved in reconfigurable antennas and improve the spectrum utilization efficiency. Design/methodology/approach The proposed MIMO antenna… read more here.
Keywords: pair antennas; ghz; mimo antenna; communication ... See more keywords
Band Sampling Beam Formation Principle and Two-Element Band Sampling 1-D Imaging Microwave Radiometer
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Geoscience and Remote Sensing Letters"
DOI: 10.1109/lgrs.2021.3071558
Abstract: How to provide L-band 1-km spatial resolution with radiometer at 800-km height with acceptable cost is a question still being explored. This article proposes a two-element band sampling 1-D imaging microwave radiometer. The band sampling… read more here.
Keywords: two element; radiometer; element band; band ... See more keywords
Tunable two-element diffractive lenses with optimal bandwidth utilization.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.472896
Abstract: Previous work has shown that a set of two diffractive optical elements arranged in series can form a diffractive lens with variable optical power that can be tuned by relative rotation of its two sub-elements… read more here.
Keywords: tunable two; two element; phase; sub elements ... See more keywords
Method of initial design of a two-element double-sided telecentric optical system.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.475947
Abstract: An algebraic method for finding fundamental parameters of a starting design of a two-element double-sided telecentric lens is introduced in this work. The telecentric lens is formed by two objectives composed of an afocal meniscus… read more here.
Keywords: two element; sided telecentric; design; design two ... See more keywords
Numerical Investigation of a Two-Element Wingsail for Ship Auxiliary Propulsion
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Marine Science and Engineering"
DOI: 10.3390/jmse8050333
Abstract: The rigid wingsail is a new type of propulsion equipment which greatly improves the performance of the sailboat under the conditions of upwind and downwind. However, such sail-assisted devices are not common in large ships… read more here.
Keywords: element wingsail; propulsion; position; wingsail ... See more keywords