Results 71 to 80 of about 36,752 (222)

Routing and Downlink Resource Allocation for Multicast Traffic in LEO Satellite Constellations

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT In this work, we optimize unicast and multicast traffic delivery over non‐terrestrial networks (NTNs) to users on the ground through direct satellite downlink (DL). We consider a gateway‐free mesh architecture with low Earth orbit (LEO) satellites interconnected via inter‐satellite links (ISLs), where unicast and multicast services compete for
Federico Lozano‐Cuadra, Israel Leyva‐Mayorga, Jimmy Jessen Nielsen, Beatriz Soret   +3 more
wiley   +1 more source

Design and investigation of 65 nm rf cmos technology lc-vco’s / Aukštadažnių, 65 nm kmop technologijos, lc įtampa valdomų generatorių projektavimas ir tyrimas

Mokslas: Lietuvos Ateitis, 2014
In this paper, two LC Voltage-Controlled Oscillators (LC-LC-VCO1 and LC-VCO2) are designed using TSMC 65 nm LP/MS/RF CMOS technology. Two arrays, one of which is a 6-bit capacitor array and the other – an array of MOS varactors, provide a wide LC-VCO ...
Vytautas Mačaitis, Vaidotas Barzdėnas
doaj   +1 more source

Integrating Artificial Intelligence With PPE: A Smart Boiler Suit Framework for Maritime Survey Applications

Safety Science and Technology, EarlyView.
This paper introduces a conceptual framework for an AI‐enhanced smart boiler suit, shifting maritime surveyor safety from reactive to proactive monitoring. Through integrated sensor networks and edge AI analytics, the proposed architecture offers a robust modular roadmap for advancing intelligent personal protective equipment in hazardous offshore and ...
P. Katsinellos, A. Gotsopoulos, A. Chatzopoulos, N. Gerolimos, G. Priniotakis   +4 more
wiley   +1 more source

A High-Precision Hybrid Analog and Digital Beamforming Transceiver System for 5G Millimeter-Wave Communication

IEEE Access, 2019
In this paper, the development of a millimeter-wave hybrid beamforming (HBF) transceiver system for 5G millimeter-wave multiple-input-multiple-output (MIMO) communication is presented.
Ruoqiao Zhang, Jianyi Zhou, Ji Lan, Binqi Yang, Zhiqiang Yu   +4 more
doaj   +1 more source

Tailoring Model‐Based Systems Engineering for Sub‐100 g PlanarSats: A Power‐First View Stack

Systems Engineering, EarlyView.
ABSTRACT This paper addresses how to apply model‐based systems engineering (MBSE) to ultrasmall planar satellites under severe power and resource constraints. PlanarSats are sub‐100‐gram spacecraft built as single printed‐circuit boards where the same surface must host both electronics and solar cells, so power generation, geometry, and component ...
Mehmet Şevket Uludaǧ, Alim Rüstem Aslan   +1 more
wiley   +1 more source

340 Ghz Multipixel Transceiver [PDF]

, 2017
A multi-pixel terahertz transceiver is constructed using a stack of semiconductor layers that communicate using vias defined within the semiconductor layers.
Lee, Choonsup, Gill, John J., Chattopadhyay, Goutam, Mehdi, Imran, Lin, Robert, Reck, Theodore, Peralta, Alejandro, Jung-Kubiak, Cecile, Cooper, Ken B., Decrossas, Emmanuel   +9 more
core  

Belaidžio ryšio siųstuvų-imtuvų susiderinimo būdų analizė / Analysis of self tuning methods for direct conversion transceivers

Mokslas: Lietuvos Ateitis, 2018
Integrated circuit fabrication technological processes affect error of transceiver’s components, thus aims to minimize such deviation. This paper analyzes modern wireless transceiver calibration methods: feedforward, feedback, hybrid and indirect.
Leonid Kladovščikov, Romualdas Navickas   +1 more
doaj   +1 more source

Technique to estimate human reaction time based on visual perception

Healthcare Technology Letters, 2017
The design and implementation of a wearable system to estimate the human reaction time (HRT) to visual stimulus based on two identical wireless motion sensors are described.
Reza Abbasi-Kesbi, Hamidreza Memarzadeh-Tehran, M. Jamal Deen   +2 more
doaj   +1 more source

Encapsulated Leptin‐Producing Cells Facilitate Entrainment of Circadian Rhythms in Rodents and Nonhuman Primates

Advanced Science, Volume 13, Issue 61, 3 November 2026.
A clinically translatable cell line can be engineered to produce leptin, encapsulated in biomaterial and safely implanted to produce and deliver the metabolic regulating protein within the body. Implantation of these encapsulated cells decreases the time it takes for mice and non‐human primates to adjust to circadian disruptions similar to those ...
Samantha T. Fleury, Xuanyi Lin, Peter D. Rios, Christopher Olker, Eun Joo Song, Alejandra Cobos Perez, Cody Fell, Daisy Lopez, Ira Joshi, Hafsa Nasir, Cecelia Curtis, Danna Muringi, Kaiyuan Wang, José Oberholzer, Fred W. Turek, Isaac B. Hilton, Jonathan Rivnay, Martha Hotz Vitaterna, Omid Veiseh   +18 more
wiley   +1 more source

Design and Implementation of an Automated Wheelchair With Voice and Gesture Control, Obstacle Avoidance, and Real‐Time Location Sharing

Engineering Reports, Volume 8, Issue 11, November 2026.
This work presents a standalone smart wheelchair featuring dual voice‐ and gesture‐based control, obstacle avoidance, and real‐time location sharing. The system achieves 100% gesture accuracy and 94% voice accuracy, enabling safe, independent mobility for users with severe physical impairments and providing emergency support without smartphone ...
Md Nurul Huda Rifat, S. M. Fatin Hasnat, Md. Habibur Rahman Aslam   +2 more
wiley   +1 more source