Results 31 to 40 of about 814,979 (304)

Satellite to buoy IoT communications in the Arctic Ocean

open access: yesFrontiers in Marine Science, 2023
Internet of things (IoT), to Arctic Ocean areas using Low Earth Orbit (LEO) satellites for communication to and from sensor units on the sea, has become increasingly important.
Terje Røste, Kun Yang, Chengyuan Wen
doaj   +1 more source

Link Budget Analysis for Enhancing IoT Performance over Satellite Networks

open access: yesAlgerian Journal of Signals and Systems
The Internet of Things (IoT) has revolutionized various industries, and satellite communication has emerged as a promising solution to extend IoT connectivity to remote and underserved areas. However, ensuring reliable and efficient IoT performance over
Youcef BENABDELLAH
doaj   +1 more source

Development of an improved acm scheme for mitigating earth-to-space propagation effects

open access: yesArid Zone Journal of Engineering, Technology and Environment, 2021
Satellite communication is a promising technology due to its ability to serve very large number of users with high data rate services. The communication link experiences propagation losses such as: Path loss, atmospheric losses, rain fading, ionosphere ...
A. M. S. Tekanyi   +4 more
doaj  

Analysis of a Low-Earth Orbit Satellite Downlink Considering Antenna Radiation Patterns and Space Environment in Interference Situations

open access: yesRemote Sensing, 2023
This paper investigates a low-Earth orbit (LEO) satellite downlink for high-speed data communication in interference situations. A choke ring horn type antenna is used as the data transmitting antenna with an isoflux pattern in the LEO satellite, which ...
Eunjung Kang   +6 more
doaj   +1 more source

Dynamic link budget simulation [PDF]

open access: yes, 2013
A new simulator named DLBS (Dynamic Link Budget Simulator) was written to simulate the time-varying communication link between a vehicle that re-enters the atmosphere from the outer space, and a ground station.
Mcmanamon P., Visintin M.
core  

Evaluation of a Novel Electric Health Record Sidecar Application to Display Rheumatoid Arthritis Clinical Outcomes During Clinic Visits: Results of a Stepped‐Wedge Cluster Randomized Pragmatic Trial

open access: yesArthritis Care &Research, EarlyView.
Objective We developed a novel electronic health record sidecar application to visualize key rheumatoid arthritis (RA) outcomes, including disease activity, physical function, and pain, via a patient‐facing graphical interface designed for use during outpatient visits (“RA PRO dashboard”).
Gabriela Schmajuk   +16 more
wiley   +1 more source

CMOS-Driven VCSEL-Based Photonic Links: an Exploration of the Power-Sensitivity Trade-Off

open access: yesIEEE Access, 2022
This article explores the power-sensitivity trade-off in optical receivers aiming to improve the energy-efficiency of the overall link. Optical receivers with field-effect transistor (FET) front-ends (FEs) are usually designed for optimal noise ...
Diaaeldin Abdelrahman   +2 more
doaj   +1 more source

Recent Census Migration Findings [PDF]

open access: yes, 2003
Part of a series that examines California's budget and its relationship to the state's economy. Examines 2003 Census findings, and the link between 1995-2000 domestic migration and economy and budget ...

core  

OAM multiple transmission using uniform circular arrays: numerical modeling and experimental verification with two digital television signals [PDF]

open access: yes, 2016
In this work we present the outcomes of a radio-frequency OAM transmission between two antenna arrays performed in a real-world context. The analysis is supplemented by deep simulative investigations able to provide both a preliminary overview of the ...
Cagliero, Andrea   +3 more
core   +2 more sources

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

open access: yesAdvanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova   +2 more
wiley   +1 more source

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