Results 91 to 100 of about 17,110 (213)

Clinical Relevance of ‘Cap’ and ‘Track’ Development after Recent Small Subcortical Infarct

Annals of Neurology, Volume 97, Issue 5, Page 942-955, May 2025.
Objective After a recent small subcortical infarct (RSSI), some patients develop perilesional or remote hyperintensities (‘caps/tracks’) to the index infarct on T2/FLAIR MRI. However, their clinical relevance remains unclear. We investigated the clinicoradiological correlates of ‘caps/tracks’, and their impact on long‐term outcomes following RSSI ...
Yajun Cheng, Carmen Arteaga‐Reyes, Una Clancy, Daniela Jaime Garcia, Maria Del C. Valdés Hernández, Michael J. Thrippleton, Michael S. Stringer, Gordon W. Blair, Stewart Wiseman, Francesca M. Chappell, Junfang Zhang, Xiaodi Liu, Angela C.C. Jochems, Susana Muñoz Maniega, Eleni Sakka, Mark E. Bastin, Rosalind Brown, Caroline M.J. Loos, Stephen D.J. Makin, Ming Liu, Bo Wu, Fergus N. Doubal, Joanna M. Wardlaw, MSS‐2, MSS‐3 and the INVESTIGATE‐SVDs Study Group, Ian Marshall, Olivia K.L. Hamilton, Ellen Backhouse, Will Hewins, Rachel Locherty, Emilie Sleight, Alasdair G. Morgan, Cameron Manning, Iona Hamilton, Gayle Barclay, Donna McIntyre, Charlotte Jardine, Dominic Job, David Perry, Tom MacGillivray, Charlene Hamid, Martin Dichgans, Anna Kopczak, Marco Duering, Benno Gesierich, Karin Waegemann, Michael Ingrisch, Salvatore Rudilosso, Ernest Chui, Esther Janssen, Robert J van Oostenbrugge, Julie Staals, Maud van Dinther, Danielle Kerkhofs, Walter H Backes, Geert Jan Biessels, Hilde van den Brink, Laurien P Onkenhout, Tine Arts, Stanley DT Pham, Jeroen Hendrikse, Jaco JMZ Zwanenburg, Jeroen CW Siero, Alastair JS Webb   +63 more
wiley   +1 more source

Geolocation of Devices in Low-Power Wide-Area LoRa Network

Communications
This article is focused on the geolocation possibilities in low-power deployments. A novel Logarithmic Distance Path Loss Model with a Memory (LDPL-M) algorithm is proposed to enhance the accuracy of determining the location of end devices.
Ladislav Zemko, Daniel Hroš, Alexander Valach, Marek Galinski, Pavel Čičák   +4 more
doaj   +1 more source

Ecosystem‐Scale Carbon Dioxide, Methane and Water Vapor Fluxes From Subtropical Brackish Fishponds: Temporal Variability, Environmental Drivers, and Implications for Nature‐Based Climate Solutions

Earth's Future, Volume 13, Issue 5, May 2025.
Abstract Coastal wetlands such as mangroves have a great potential in sequestering blue carbon and mitigating future climate change. Yet, these wetlands are being increasingly converted to aquaculture ponds, which could trigger a pulse emission of greenhouse gases (GHGs) from existing carbon stocks, a loss of opportunity for future carbon sequestration
Jiangong Liu, Suvadip Neogi, Derrick Y. F. Lai   +2 more
wiley   +1 more source

Underground RSSI positioning method based on multi-stage denoising and dual-branch temporal network

Gong-kuang zidonghua
The underground Received Signal Strength Indicator (RSSI) signal exhibits non-stationary characteristics such as sharp spikes, high-frequency jitter, and trend drift under the influence of multipath propagation, occlusion, and electromagnetic ...
FENG Ziyang, GONG Peilin, ZHAO Tong, YI Kang, LI Peng, SU Chao, BAI Libin   +6 more
doaj   +1 more source

Inferring Motion and Location Using WLAN RSSI

, 2009
We present novel algorithms to infer movement by making use of inherent fluctuations in the received signal strengths from existing WLAN infrastructure. We evaluate the performance of the presented algorithms based on classification metrics such as recall and precision using annotated traces obtained over twelve hours effectively from different types ...
Kavitha Muthukrishnan, K., van der Zwaag, B.J., Havinga, Paul J.M.   +2 more
openaire   +2 more sources

RSSI prediction using Machine Learning models

, 2021
In this study, we present a method to predict the Received signal strength indication (RSSI) in an area of the base station. Traditional attenuated wave propagation models are often time consuming as well as computationally complex, depending on the unique factors of the medium. This study focuses on providing a solution to predict signal quality using
Le, Tung Giang, Quach, Huy Tung, Le, Thu Thao Dao, Tran, Manh Hoang   +3 more
openaire   +2 more sources

Fingerprinting‐Based Indoor Localization in a 3 × 3 Meter Grid Using OFDM Signals at Sub‐6 GHz

Applied AI Letters, Volume 6, Issue 1, February 2025.
ABSTRACT Accurately determining the indoor location of mobile devices has garnered significant interest due to the complex challenges posed by non‐line‐of‐sight (NLOS) propagation and multipath effects. To address this challenge, this paper proposes a new approach to indoor positioning that utilises channel state information (CSI) and machine learning (
Jaspreet Kaur, Kang Tan, Muhammad Z. Khan, Olaoluwa R. Popoola, Muhammad A. Imran, Qammer H. Abbasi, Hasan T. Abbas   +6 more
wiley   +1 more source

Estimating Object Location in RF Communication by Using RSSI Values Through k-NN and Deep Learning Techniques

Gazi Üniversitesi Fen Bilimleri Dergisi
GPS-based positioning faces significant challenges in accuracy and reliability, especially due to environmental factors such as signal interruptions, multi-path propagation, and poor satellite visibility.
Nihat Daldal, Muhammad Zaib
doaj   +1 more source

Cerebral Small Vessel Disease Outperforms Brain Atrophy as an Imaging Biomarker in Diabetic Retinopathy

Journal of Diabetes, Volume 17, Issue 2, February 2025.
ABSTRACT Aim This study aimed to examine microvascular lesions and neurodegenerative changes in diabetic retinopathy (DR) compared to type 2 diabetes mellitus (T2DM) without DR (NDR) using structural MRI and to explore their associations with DR. Methods 243 patients with NDR and 122 patients with DR were included.
Xinyi Shen, Wen Zhang, Xin Li, Xin Zhang, Qian Li, Min Wu, Linqing Fu, Jiaming Lu, Zhengyang Zhu, Bing Zhang   +9 more
wiley   +1 more source

Dual-mode Antenna Tracking System for Rocket Launch Applications

Jurnal Rekayasa Elektrika
Rocket launches are complex events that require tracking antennas to maintain a communication link. This study introduces a hybrid tracking strategy that combines manual and program modes by utilizing a predetermined trajectory of the rocket.
Muh. Fakhri, Mirza Zulfikar Rahmat, Anita Pascawati, Sonny Dwi Harsono, Yuniarto Wimbo Nugroho, Kandi Rahardiyanti, Nurul Fahrizatul Rohmah   +6 more
doaj   +1 more source