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Intelligent Beam-Hopping-Based Grant-Free Random Access in Secure IoT-Oriented Satellite Networks.
Sensors (Basel)
January 2025
School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China.
This research presents an intelligent beam-hopping-based grant-free random access (GFRA) architecture designed for secure Internet of Things (IoT) communications in Low Earth Orbit (LEO) satellite networks. In light of the difficulties associated with facilitating extensive device connectivity while ensuring low latency and high reliability, we present a beam-hopping GFRA (BH-GFRA) scheme that enhances access efficiency and reduces resource collisions. Three distinct resource-hopping schemes, random hopping, group hopping, and orthogonal group hopping, are examined and utilized within the framework.
View Article and Find Full Text PDFAdvanced Thermoelectric Performance of SWCNT Films by Mixing Two Types of SWCNTs with Different Structural and Thermoelectric Properties.
Materials (Basel)
January 2025
Department of Materials Science, Tokai University, Hiratsuka 259-1292, Kanagawa, Japan.
Semiconducting single-walled carbon nanotubes (SWCNTs) are significantly attractive for thermoelectric generators (TEGs), which convert thermal energy into electricity via the Seebeck effect. This is because the characteristics of semiconducting SWCNTs are perfectly suited for TEGs as self-contained power sources for sensors on the Internet of Things (IoT). However, the thermoelectric performances of the SWCNTs should be further improved by using the power sources.
View Article and Find Full Text PDFDevelopment and validation of the BRief Eating Disorder Screener (BREDS) for US veterans in healthcare and community settings.
Gen Hosp Psychiatry
December 2024
San Francisco VA Health Care System, USA; University of California San Francisco School of Medicine, USA.
Objective: To develop a Diagnostic and Statistical Manual of Mental Disorders (DSM-5) eating disorder screener.
Method: Veterans enrolled in VA healthcare (N = 344) completed a survey of screening items and established measures. A validation subset (n = 166) participated in diagnostic interviews to confirm an eating disorder diagnosis.
Recovery From Heroin Addiction: A Qualitative Study.
Public Health Nurs
December 2024
College of Nursing, Kent State University, Kent, Ohio, USA.
Objective: Understanding the recovery process from heroin addiction is crucial as nonmedical opioid use persists. This study aims to comprehensively describe the recovery journey, focusing on the experiences and challenges faced by individuals in recovery to inform treatment approaches and support strategies.
Methods: This qualitative study, guided by critical social theory, emphasized balancing power dynamics and fostering equal participation to ensure all voices are heard, challenging traditional hierarchies and promoting inclusivity.
IoT based intelligent pest management system for precision agriculture.
Sci Rep
December 2024
Faculty of Electronics, Telecommunications, and Informatics, Gdansk University of Technology, 80-233, Gdańsk, Poland.
Despite seemingly inexorable imminent risks of food insecurity that hang over the world, especially in developing countries like Pakistan where traditional agricultural methods are being followed, there still are opportunities created by technology that can help us steer clear of food crisis threats in upcoming years. At present, the agricultural sector worldwide is rapidly pacing towards technology-driven Precision Agriculture (PA) approaches for enhancing crop protection and boosting productivity. Literature highlights the limitations of traditional approaches such as chances of human error in recognizing and counting pests, and require trained labor.
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