Results 71 to 80 of about 35,656 (222)

A Mechanism for Analyzing the Energy Consumption and Environmental Impact of LoRa Sensors Over Time

International Journal of Communication Systems, Volume 39, Issue 15, October 2026.
An SPN‐based mechanism, validated against NS‐3 with MAPE below 0.3%, reveals how packet generation rate and spreading factor shape LoRa sensor lifetime, energy consumption, and operational CO2$$ {}_2 $$ emissions, supporting sustainable planning of large‐scale IoT deployments. ABSTRACT Long Range (LoRa) sensors are widely adopted in Internet of Things (
Vandirleya Barbosa, Melissa Alves, Iago Almeida, Iure Fé, Jean Araujo, Francisco Airton Silva   +5 more
wiley   +1 more source

Design of an 8‐Channel Transmit 32‐Channel Receive 11.7T Head Coil and Evaluation of SNR Gains

Magnetic Resonance in Medicine, Volume 96, Issue 4, Page 2004-2018, October 2026.
ABSTRACT Purpose To design and develop an 8‐channel transmit 32‐channel receive 11.7T head coil for the strongest human MRI scanner to date, demonstrate safety, and evaluate signal‐to‐noise ratio (SNR) gains compared to 7T, the most used ultra‐high‐field (UHF) platform.
Son Chu, Jeslin Parackal Issac, Caroline Le Ster, Alexis Amadon, Vincent Gras, Paul‐François Gapais, Rüdiger Stirnberg, Nicolas Boulant, Shajan Gunamony   +8 more
wiley   +1 more source

Simultaneous 3‐D Adiabatic T1ρ, T2*, and Quantitative Susceptibility Mapping for Characterization of Myocardial Infarction in Ex Vivo Mouse

NMR in Biomedicine, Volume 39, Issue 10, October 2026.
This study combines segmented T1ρ preparation into a 3‐D gradient‐echo sequence for simultaneous quantitative susceptibility, T2*, and T1ρ mapping of infarcted mouse hearts ex vivo. The method enabled assessment of T1ρ and T2* relaxation time maps and magnetic susceptibility, with ischemic regions clearly identified by all contrasts and consistent with
Iida Räty, Olli Nykänen, Sanna Kettunen, Svetlana Laidinen, Anna‐Kaisa Ruotsalainen, Mikko J. Nissi, Elias Ylä‐Herttuala   +6 more
wiley   +1 more source

Key Technologies for THz Wireless Link by Silicon CMOS Integrated Circuits

Photonics, 2018
In terahertz-band communication using ultra-high frequencies, compound semiconductors with superior high-frequency performance have been used for research to date.
Minoru Fujishima
doaj   +1 more source

A Machine Learning Approach That Measures Extracellular pH Within an In Vivo Tumor Model Using acidoCEST MRI

NMR in Biomedicine, Volume 39, Issue 10, October 2026.
Machine learning models, particularly RFR (random forest regression), provide accurate and computationally efficient tumor pHe estimation from acidoCEST MRI without requiring auxiliary parametric maps. RFR achieved comparable performance to traditional Bloch fitting (RMSE: 0.020 vs.
Alia Khaled, Chetan B. Dhakan, Lucas B. McCullum, Jorge de la Cerda, F. William Schuler, Tianzhe Li, Mark D. Pagel   +6 more
wiley   +1 more source

A GFSK transceiver for IEEE Std. 802.15.4g used in China

, 2013
This paper details on the design of GFSK (Gaussian frequency shit keying) transceiver with low-complexity high-performance & low power consumption, which is compliant with IEEE Std. 802.15.4g used in China.
Huang XL(黄晓莉), Maoqiang Duan, Zhijia Yang, Xiaoli Huang, Yang ZJ(杨志家), Duan MQ(段茂强)   +5 more
core   +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

Congruence and Compatibility in Functional Regional Taxonomy: Principles and Applications

Geographical Analysis, Volume 58, Issue 4, October 2026.
ABSTRACT The article connects several concepts that were previously used and evaluated separately in functional regional taxonomy and in the delineation of functional regions. Typically, functional regions are not defined based on absolute values of population flows.
Marián Halás
wiley   +1 more source

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

Scalable Emitter Photonic Integrated Circuits on an Open‐Access Indium Phosphide Foundry

Nanophotonics, Volume 15, Issue 17, 11 September 2026.
An open‐access indium phosphide platform with high‐speed 80 GBaud modulators delivers versatile emitter PICs. By showcasing a widely tunable optical frequency comb generator, a 672 MHz record low‐repetition‐rate mode‐locked extended cavity mode locked laser, and monolithic InP tunable laser with a narrow linewidth of 8.2 kHz, this work presents a ...
Durvasa Y. Gupta, Axel Schoenau, Hendrik Boerma, Shahram Keyvaninia, Patrick Runge   +4 more
wiley   +1 more source