Results 11 to 20 of about 72,402 (289)
Extended field-of-view light-sheet microscopy [PDF]
EPJ Web of Conferences, 2022 Light-sheet fluorescence microscopy enables rapid 3D imaging of biological samples. Unlike confocal and two-photon microscopes, a light-sheet microscope illuminates the focal plane with an objective orthogonal to the detection axis and images it in a ...
Vettenburg Tom
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Performance Studies of Narrow-Beam Trisector Cellular Systems [PDF]
International Journal of Wireless Information Networks, 1998 This paper analyzes and compares two different approaches to base station sectorization: the traditional wide-beam trisector cell (WBTC); and the newer (but not well-characterized) narrow-beam trisector cell (NBTC). Unlike the WBTC architecture using three 100/spl deg/-120/spl deg/ antennas in a base station, the NBTC architecture (also called "clover ...
null Li-Chun Wang +2 more
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Parametric analysis on hybrid design method for steel cellular beams [PDF]
REM: International Engineering JournalCellular beams are an attractive engineering solution due to their high strength to weight ratio, allowing for a design even lighter and more cost efficient in steel structures.
Lucas Alves de Aguiar +2 more
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Independent trapping, manipulation and characterization by an all-optical biophotonics workstation [PDF]
Journal of the European Optical Society-Rapid Publications, 2008 Optical trapping has enabled a multitude of applications focusing, in particular, on non-invasive studies of cellular material. The full potential of optical trapping has, however, not yet been exploited due to restricted access to the trapped samples ...
Ulriksen Hans-Ulrik +7 more
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A spectrum efficient cellular base-station antenna architecture [PDF]
, 1992 A concept is considered according to which using the spatial distribution of the users acquired by an array on reception, an antenna system can dynamically assign single narrow beams to illuminate lone mobiles, and broad beams to the numerous groupings ...
Beach, MA, McGeehan, JP, Swales, SC
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Optimizing an array of antennas for cellular coverage from a high altitude platform [PDF]
, 2003 In a wireless communications network served by a high altitude platform (HAP) the cochannel interference is a function of the antenna beamwidth, angular separation and. sidelobe level.
Capstick, M H +3 more
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Beam Training Technique for Millimeter-Wave Cellular Systems Using Retrodirective Arrays
IEEE Access, 2020 Beam training in millimeter-wave (mmWave) cellular systems requires a long processing time that is proportional to the product of the number of transmitting and receiving beams.
Yeong Jun Kim +3 more
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Journal of the Mechanical Behavior of Materials, 2022 This study aims to investigate the adequacy of composite cellular beams with lightweight reinforced concrete deck slab as a structural unit for harmonic loaded buildings.
Dakhela Zahraa Hussien +1 more
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“Pencil Beamforming Increases Human Exposure to ElectroMagnetic Fields”: True or False?
IEEE Access, 2021 According to a very popular belief - very widespread among non-scientific communities - the exploitation of narrow beams, a.k.a. “pencil beamforming”, results in a prompt increase of exposure levels radiated by 5G Base Stations (BSs).
Luca Chiaraviglio +4 more
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Approximations of the aggregated interference statistics for outage analysis in massive MTC [PDF]
, 2019 This paper presents several analytic closed-form approximations of the aggregated interference statistics within the framework of uplink massive machine-type-communications (mMTC), taking into account the random activity of the sensors.
Liesegang Maria, Sergi +2 more
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