Results 11 to 20 of about 251,238 (344)
A Seismological Study of the Michoacán-Colima, Mexico, Earthquake of 19 September 2022 (Mw7.6)
Geofísica Internacional, 2023 Michoacán-Colima earthquake of 19 September 2022 (Ms 7.6, Mw 7.6) ruptured the NW end of the Cocos-North American plate interface, causing severe damage to many towns and cities in the states of Michoacán and Colima. The damage was further exacerbated by
Shri Krishna Singh +9 more
doaj +1 more source
Физика волновых процессов и радиотехнические системы, 2022 In the paper the digital beamforming is examined in azimuth and elevation, which allows more accurate formation of nulls and maximum of the radiation pattern.
Yury B. Nechaev, Ilya V. Peshkov
doaj +1 more source
Continuous Head-related Transfer Function Representation Based on Hyperspherical Harmonics [PDF]
Archives of Acoustics, 2023 Expressing head-related transfer functions (HRTFs) in the spherical harmonic (SH) domain has been thoroughly studied as a method of obtaining continuity over space. However, HRTFs are functions not only of direction but also of frequency.
Adam Szwajcowski
doaj +1 more source
Micromachines, 2023 In this manuscript, we have numerically investigated and experimentally verified the six-element split ring resonator and circular patch-shaped multiple input, multiple output antenna operating in the 1–25 GHz band. MIMO antennas are analyzed in terms of
Meshari Alsharari +4 more
doaj +1 more source
IEEE Photonics Journal, 2021 The perovskite light-emitting diodes (PeLEDs) have attracted considerable research interests in recent years due to their decent and tunable optoelectronic characteristics.
Qing Ci +7 more
doaj +1 more source
Applied Sciences, 2021 Flat panel loudspeakers are a promising alternative to conventional loudspeakers. In particular, quasi-omnidirectional radiation at higher frequencies is stressed as an advantage of these systems compared to conventional speaker systems.
Benjamin Zenker +3 more
doaj +1 more source
Design, Analysis, and Simulation of 60 GHz Millimeter Wave MIMO Microstrip Antennas
Journal of Sensor and Actuator Networks, 2022 This article comparatively shows the evolution of parameters of three types of arrays for MIMO microstrip antennas, to which the number of ports is gradually incremented until reaching 32.
Juan Carlos Martínez Quintero +2 more
doaj +1 more source
Performance of hemielliptic dielectric lens antennas with optimal edge illumination [PDF]
, 2009 The role of edge illumination in the performance of compact-size dielectric lens antennas (DLAs) is studied in accurate manner using a highly efficient algorithm based on the combination of the Muller boundary integral equations and the method of ...
Boriskin, A. V. +2 more
core +3 more sources
A DIRECT ADVANCE ON ADVANCE DIRECTIVES [PDF]
Bioethics, 2010 ABSTRACTAdvance directives (ADs), which are also sometimes referred to as ‘living wills’, are statements made by a person that indicate what treatment she should not be given in the event that she is not competent to consent or refuse at the future moment in question.
openaire +2 more sources
Micromachines, 2023 We proposed a novel approach based on a complementary split-ring resonator metamaterial in a two-port MIMO antenna, giving high gain, multiband results with miniature size. We have also analyzed a circular disk metasurface design.
Ammar Armghan +8 more
doaj +1 more source