Results 71 to 80 of about 2,845,707 (370)
Connecting Networks for Two-Dimensional Butler Matrices Generating a Triangular Lattice of Beams
IEEE Journal of Microwaves, 2021 Connecting networks for two-dimensional beamforming matrices are discussed. They provide a suitable interconnection between the output ports of a Butler matrix and antenna array ports, transforming a square (and more generally, rectangular) lattice of ...
NELSON J. G. FONSECA +5 more
doaj +1 more source
Matriz heterosexual e matriz heterojurídica: in(ter)venções conceituais feministas para pensar o emprego doméstico [PDF]
, 2014 En el presente artículo componemos algunos aspectos de la categoría de matriz heterosexual (MH) a partir de obras seleccionadas de BUTLER (1987; 1990; 1992; 1993) como parte de una trama mayor, en donde particularmente nos detenemos en textos de RICH ...
Lerussi, Romina Carla
core
The Anatomical Record, EarlyView.Abstract The study of morphological evolution is fundamentally tied to ontogeny, yet studies of these heterochronic processes in the fossil record are rare. Fossils belonging to an ontogenetic series are difficult to assign to an ontogenetic stage due to inconsistent proxies for skeletal ages, challenging to taxonomically assign due to morphological ...
Erika R. Goldsmith, Michelle R. Stocker
wiley +1 more source
IEEE AccessCurrent wireless communications urgently need to provide huge data rates, high gain and high directivity radiation pattern beams. Therefore, beamforming networks (BFNs) are introduced to provide these needs.
Y. M. Hussein +3 more
semanticscholar +1 more source
Satellite personal communications system [PDF]
, 1980 Voice channel communication between low power mobile stations dispersed over a large area is provided by a system which includes a geostationary satellite utilizing a large UHF antenna that can receive a transmission from a caller and retransmit it over ...
Reilly, N. B., Smith, J. G.
core +1 more source
Redescription of the Triassic cynodont Cistecynodon parvus and reassessment of its phylogeny
The Anatomical Record, EarlyView.Abstract Cynodontia is an important subclade of Therapsida that first occurred in the late Permian. It includes extinct subclades which are the non‐mammaliaform cynodonts and Mammaliaformes, with the latter ultimately giving rise to crown mammals. The systematics of non‐mammaliaform cynodonts has been extensively studied and is relatively well‐resolved,
Erin S. Lund +4 more
wiley +1 more source
IEEE Access, 2019 In this paper, a novel reconfigurable Butler matrix based on transmission line resonators is presented and implemented. This matrix is built from embedding a reconfigurable multilayer directional coupler with an open stub resonator and p-i-n diodes to ...
Mohamed Lamine Seddiki +2 more
doaj +1 more source
Analytical description of ballistic spin currents and torques in magnetic tunnel junctions [PDF]
, 2015 In this work we demonstrate explicit analytical expressions for both charge and spin currents which constitute the 2x2 spinor in magnetic tunnel junctions with noncollinear magnetizations under applied voltage. The calculations have been performed within
Butler, W. H. +7 more
core +4 more sources
Business Strategy and the Environment, EarlyView.ABSTRACT This study investigates the bi‐directional relationship between corporate sustainability and environmental uncertainty, focusing on key moderators that shape firms' strategic responses. Using fixed‐effects regressions with S&P 500 data (LSEG Refinitiv Workspace, 2005–2022), we present two key findings.
Felix Peter Thiesen, Rainer Lueg
wiley +1 more source
Cytoskeleton, EarlyView.ABSTRACT In this paper we describe a technique to make a confined environment of variable stiffness that is suitable for high‐resolution live‐cell imaging. This versatile and adaptable technique enables cell confinement between soft elastic surfaces made from polyacrylamide gels.
Alexia Caillier, Patrick W. Oakes
wiley +1 more source