Results 11 to 20 of about 4,226 (175)

DS-IRSA: A Deep Reinforcement Learning and Sensing Based IRSA

GLOBECOM 2023 - 2023 IEEE Global Communications Conference, 2023
One of the main difficulties to enable the future scaling of IoT networks is the issue of massive connectivity. Recently, Modern Random Access protocols have emerged as a promising solution to provide massive connections for IoT. One main protocol of this family is Irregular Repetition Slotted Aloha (IRSA), which can asymptotically reach the optimal ...
Hmedoush, Iman, Gu, Pengwenlong, Adjih, Cédric, Mühlethaler, Paul, Serhrouchni, Ahmed   +4 more
core   +7 more sources

Adaptive Transmission Control Considering Available Channels Difference Among Terminals in Satellite IoT Systems Using CRDSA/IRSA

IEEE Access
The use of Low Power Wide Area (LPWA) networks in the 920-MHz band, which are compatible with terrestrial network devices, is being explored for a satellite Internet-of-Things (IoT) system.
Daisuke Gotō, Hiraku Okada, Koyo Tategami   +2 more
exaly   +4 more sources

IRSA-Based Random Access Over the Gaussian Channel [PDF]

IEEE Transactions on Information Theory
A framework for the analysis of synchronous grant-free massive multiple access schemes based on the irregular repetition slotted ALOHA (IRSA) protocol and operating over the Gaussian multiple access channel is presented. IRSA-based schemes are considered here as an instance of the class of unsourced slotted random access codes, operating over a frame ...
Velio Tralli, Enrico Paolini
core   +8 more sources

Carbon and nitrogen (δ13C, δ15N) isotope ratios of zooplankton in Lake Maggiore (Italy): a 13-year dataset [PDF]

Scientific Data
We present measurements of δ13C, δ15N, C% and N% for 1,084 zooplankton samples (2,168 total isotope analyses). Analyses were performed on zooplankton taxa inhabiting Lake Maggiore, including copepod developmental stages, as well as on pooled organisms ...
Roberta Piscia, Rossana Caroni, Roberta Bettinetti, Marina Manca   +3 more
doaj   +2 more sources

Atomically dispersed Iridium on Mo2C as an efficient and stable alkaline hydrogen oxidation reaction catalyst [PDF]

Nature Communications
Hydroxide exchange membrane fuel cells (HEMFCs) have the advantages of using cost-effective materials, but hindered by the sluggish anodic hydrogen oxidation reaction (HOR) kinetics.
Jinjie Fang, Haiyong Wang, Qian Dang, Hao Wang, Xingdong Wang, Jiajing Pei, Zhiyuan Xu, Chengjin Chen, Wei Zhu, Hui Li, Yushan Yan, Zhongbin Zhuang   +11 more
doaj   +2 more sources

Interplay of physical and recognition performance using hierarchical continuous‐time dynamic modeling and a dual‐task training regime in Alzheimer's patients [PDF]

Alzheimer’s & Dementia: Diagnosis, Assessment & Disease Monitoring
Training studies typically investigate the cumulative rather than the analytically challenging immediate effect of exercise on cognitive outcomes. We investigated the dynamic interplay between single‐session exercise intensity and time‐locked recognition
Svenja Schwarck, Manuel C. Voelkle, Andreas Becke, Nancy Busse, Wenzel Glanz, Emrah Düzel, Gabriel Ziegler   +6 more
doaj   +2 more sources

Mixed-Valence Atomic-Layer Iridium Patches Enhance Alkaline Hydrogen Evolution. [PDF]

Adv Sci (Weinh)
Engineering iridium architectures on Cu3P nanowires reveals that atomic‐layer Ir patches form a mixed‐valence interfacial motif with an anisotropic electronic structure. This configuration balances water dissociation and hydrogen adsorption/desorption, delivering superior alkaline hydrogen evolution with a 27 mV overpotential and 1 A cm−2 operation in ...
Ahmadian Koudakan P, Hao X, Guo R, Mazaheri O, Pichler M, Luo Q, Zhang B, Pan S.   +7 more
europepmc   +2 more sources

Retraction: Application of IRSA-BP neural network in diagnosing diabetes. [PDF]

PLoS One
PLOS One Editors.
europepmc   +3 more sources

From Innovation to Validation: Strengthening Interventional Radiology Through Data. [PDF]

J Med Imaging Radiat Oncol
Journal of Medical Imaging and Radiation Oncology, Volume 70, Issue 5, Page 457-461, August 2026.
Cabbabe K, Goh GS, Li C, Lukies M.
europepmc   +2 more sources

Differential affinity chromatography reveals a link between Porphyromonas gingivalis–induced changes in vascular smooth muscle cell differentiation and the type 9 secretion system

Frontiers in Cellular and Infection Microbiology, 2022
Porphyromonas gingivalis is implicated in adverse pregnancy outcome. We previously demonstrated that intrauterine infection with various strains of P. gingivalis impairs the physiologic remodeling of the uterine spiral arteries (IRSA) during pregnancy ...
Priscilla L. Phillips, Xiao-jun Wu, Leticia Reyes   +2 more
doaj   +1 more source