Results 111 to 120 of about 5,914 (307)

New Bounds for Optimum Traffic Assignment in Satellite Communication

open access: yes, 1998
In this paper we assume that a satellite has l receivingand transmitting antennas, and we are given a traffic matrix D tobe transmittedby interconnecting pairs of receiving-transmitting antennas, through anon board switch.
DELL'AMICO, Mauro   +5 more
core  

Multi-Array Visible-Light Optical Generalized Spatial Multiplexing–Multiple Input Multiple-Output System with Pearson Coefficient-Based Antenna Selection

open access: yesPhotonics
To address the limitations of poor environmental adaptability, unsatisfactory bit-error performance, and high complexity of conventional antenna selection algorithms applied to a multi-array visible-light optical generalized spatial multiplexing–multiple-
Li Zhao   +3 more
doaj   +1 more source

Microenvironmental Reprogramming by 3D Anisotropic Cardiac Extracellular Matrix Induces Nuclear Remodeling and Epigenetic Maturation of Chemically Induced Cardiomyocytes

open access: yesAdvanced Functional Materials, EarlyView.
A 3D anisotropic hydrogel derived from heart extracellular matrix guides cytoskeletal alignment and nuclear remodeling in reprogrammed cardiomyocyte‐like cells. This study reveals how matrix alignment modulates nuclear envelope dynamics and chromatin state, triggering transcriptional and functional maturation.
Seung Ju Seo   +7 more
wiley   +1 more source

Proximal-Field Sensing: In Situ Prediction of Far-Field Radiation for Integrated Radiators

open access: yes, 2019
Proximal-field sensing is introduced as an integrated sensing scheme for the in situ characterization of far-field radiation properties of integrated radiators, and the proximal-field radiation sensors (PFRSs) are proposed as the tools to enable this ...
Asghari, Bahar   +3 more
core  

Receptor‐Free Identification of Toxic Gases Enabled by Hygroscopic Aqueous Salt Films

open access: yesAdvanced Functional Materials, EarlyView.
Water as a gas sensor coating sounds impossible—until it stops evaporating. Here, hygroscopic salt solutions (LiCl, LiBr, H3PO4) form non‐drying aqueous films on CNT chemiresistors under ambient air. Gases partition into these liquid layers, sometimes transforming into water, and generate salt‐specific resistance fingerprints across a four‐channel ...
Seongwoo Lee   +5 more
wiley   +1 more source

Generalised MBER-based vector precoding design for multiuser transmission

open access: yes, 2011
We propose a generalized vector precoding (VP) design based on the minimum bit error rate (MBER) criterion for multiuser transmission in the downlink of a multiuser system, where the base station (BS) equipped with multiple transmitting antennas ...
Chen, Sheng, Hanzo, Lajos, Yao, Wang
core  

Transmitting antenna

open access: yesTransmitting antenna
種別 ...
openaire  

Spatially Modulated Morphotropic Phase Boundaries in a Compressively Strained Multiferroic Thin Film

open access: yesAdvanced Functional Materials, EarlyView.
ABSTRACT The coexisting rhombohedral‐like (R′, MA) and tetragonal‐like (T′, MC) monoclinic phases in compressively strained bismuth ferrite thin films exhibit exceptional piezoelectric and magnetic properties. While previous studies have largely focused on probing the morphotropic phase boundaries (MPBs) comprising ordered R′/T′ twins, their self ...
Ting‐Ran Liu   +7 more
wiley   +1 more source

Choice of antenna geometry for microwave power transmission from solar power satellites

open access: yes, 1992
A comparison is made between square and circular transmitting antennas for solar power satellite microwave power transmission. It is seen that the exclusion zone around the rectenna needed to protect populations from microwaves is smaller for a circular ...
Potter, Seth D.
core   +1 more source

Novel numerical analysis of electric fields in the near field of very‐low‐frequency antennas based on the charge simulation method

open access: yesIET Microwaves, Antennas & Propagation
Very‐low‐frequency (VLF) transmitting antennas have a crucial influence on the nearby electromagnetic environment. Commercial software packages, such as CST Studio Suite (CST) or Altair FEKO (FEKO), are always utilised to calculate the electric fields of
Bo‐Yu Ren   +5 more
doaj   +1 more source

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