Results 41 to 50 of about 3,932,809 (294)

A Sliced Parabolic Equation Method to Characterize Maritime Radio Propagation

open access: yesSensors, 2023
For maritime broadband communications, atmospheric ducts can enable beyond line-of-sight communications or cause severe interference. Due to the strong spatial–temporal variability of atmospheric conditions in near-shore areas, atmospheric ducts have ...
Yuzhen Wang   +3 more
doaj   +1 more source

Path loss models based on stochastic rays [PDF]

open access: yesIET Microwaves, Antennas & Propagation, 2007
In this paper, two-dimensional percolation lattices are applied to describe wireless propagation environment, and stochastic rays are employed to model the trajectories of radio waves. We first derive the probability that a stochastic ray undergoes certain number of collisions at a specific spatial location.
Luoquan Hu, Han Yu, Yifan Chen
openaire   +3 more sources

Introduzione. Donatori, istituzioni e comunità

open access: yes, 2021
Il saggio esamina criticamente il tema oggetto del volume collettaneo: i benefattori, le motivazioni e le strategie del dare fra Medioevo e prima Età contemporanea.
Edward, Loss, Mauro, Carboni
core   +1 more source

Sub-6-GHz 5G Large-Scale Path Loss Model for Shoemaker Rim F: Sensitivity to Transmitter Antenna Pattern

open access: yesTelecom
Future lunar missions require robust 5G communication links, and their design depends partly on path loss characterization, link budget planning inputs, and path prediction loss models tailored to the Moon’s environmental conditions. This work develops a
Quadri R. Adebowale, Shawn Ostermann
doaj   +1 more source

Measurement and modeling of wireless body area network propagation characteristics of indoor environment at 10 GHz

open access: yes物联网学报, 2022
To explore the feasibility of high-frequency in indoor wireless body area network (WBAN) communication, the propagation characteristics of 10 GHz for WBAN in indoor scenario was given.Based on a large number of measurement data, the path loss, the shadow
Qin YANG   +4 more
doaj  

Localization in Wireless Sensor Networks: A Review

open access: yesCybernetics and Information Technologies, 2020
Wireless Sensor Network (WSN) has been a source of attraction for many researchers as well as common people for the past few years. The use of WSN in various environmental applications like monitoring of weather, temperature, humidity, military ...
Sneha V., Nagarajan M.
doaj   +1 more source

EEDLABA: Energy-Efficient Distance- and Link-Aware Body Area Routing Protocol Based on Clustering Mechanism for Wireless Body Sensor Network

open access: yesApplied Sciences, 2023
In medical environments, a wireless body sensor network (WBSN) is used to operate remotely, and sensor nodes are employed. It consists of sensor nodes installed on a human body to monitor a patient’s condition, such as heartbeat, temperature, and blood ...
Khalid Zaman   +6 more
doaj   +1 more source

Design and analysis strategies for robust microbiome ageing research

open access: yesFEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik   +5 more
wiley   +1 more source

Autophagy and mitophagy in pancreatic β‐cell homeostasis and their involvement in diabetes pathophysiology

open access: yesFEBS Letters, EarlyView.
This review focuses on the role of autophagy and mitophagy in maintaining pancreatic β‐cell function and homeostasis. We discuss how genetic defects affecting these pathways contribute to the development of type 1, type 2, monogenic, and gestational diabetes. We further explore their potential as therapeutic targets. Created in BioRender.
Yunkyeong Lee   +2 more
wiley   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS 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

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