Results 71 to 80 of about 16,431,976 (329)
IEEE AccessThis paper proposes a compact ultra-wideband (UWB) direction-finding antenna with a single-radiator multiple-port (SRMP) design. The proposed antenna consists of a single-radiator, self-decoupling feed structure (SDFS), and via walls considering the ...
Jongho Keun, Sangwoon Youn, Hosung Choo
doaj +1 more source
Вестник Дагестанского государственного технического университета: Технические науки, 2018 Objectives The aim of the study is to develop a mathematical model for determining the direction-finding error of an aerodrome automatic direction finder (ADF), depending on the position of the defective vibrator relative to the source of radio emission ...
G. Т. Aslanov +3 more
doaj +1 more source
Liver organoids: modelling complexity in homeostasis and disease
FEBS Letters, EarlyView.Studying liver in vitro has been challenging because simple 2D cell cultures fail to capture liver's cellular and architectural complexity. To bridge this gap, scientists increasingly use organoids, 3D liver models which better mimic liver composition and function. This review examines recent advances in liver organoid complexity and realism, discusses
Anna M. Dowbaj, Meritxell Huch
wiley +1 more source
Direction Finding Using GHA Neural Networks
Al-Khawarizmi Engineering Journal, 2006 This paper adapted the neural network for the estimating of the direction of arrival (DOA). It uses an unsupervised adaptive neural network with GHA algorithm to extract the principal components that in turn, are used by Capon method to estimate the DOA,
N. H. Abbas
doaj
Emerging experimental and computational methods for studying redox‐regulated structural transitions
FEBS Letters, EarlyView.Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass +2 more
wiley +1 more source
Improved VHF direction finding system [PDF]
, 1969 Direction finding device operating at very high frequencies requires a loop antenna, mechanical rotation, and large structures. The system is applicable to an unmanned configuration.
Neff, H., Graf, E. R.
core
TDOA-Based Acoustic Direction Finding
, 2018 This chapter focuses on estimating the azimuth and elevation angles of a sound emitter based on time-difference-of-arrival (TDOA) measurements using an array of acoustic sensors.
Kegen Yu, Xunxue Cui, Songsheng Lu
core +1 more source
FEBS Letters, EarlyView.How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley +1 more source
Direction Finding in MIMO Radar With Unknown Mutual Coupling
IEEE Access, 2017 Multiple-input multiple-output (MIMO) radar has received much attention due to its potentials in offering improved performance for target detection and parameter estimation.
Ce Zhang, Huiping Huang, B. Liao
semanticscholar +1 more source
Direction Finding Using an Antenna with Direction Dependent Impulse Response [PDF]
, 2016 Wideband antennas may be designed to have an impulse response that is direction dependent, not only in amplitude but also in waveform shape. This property can be used to perform direction finding using a single fixed antenna, without the need for an ...
Kegege, Obadiah, Foltz, Heinrich
core