Results 41 to 50 of about 12,705 (218)

Determinants of Community Resilience: A Multi‐Level Synthesis of Empirical and Conceptual Evidence

open access: yesSustainable Development, EarlyView.
ABSTRACT Community resilience research remains fragmented across disciplines, with limited integration of empirical evidence and conceptual scholarship. This study addresses this gap through a directed content analysis of 48 empirical case studies and 39 conceptual and review publications from diverse geographical and hazard contexts.
Anamol Neupane   +2 more
wiley   +1 more source

Delay distributions of slotted ALOHA and CSMA [PDF]

open access: yes, 2003
We derive the closed-form delay distributions of slotted ALOHA and nonpersistent carrier sense multiple access (CSMA) protocols under steady state. Three retransmission policies are analyzed. We find that under a binary exponential backoff retransmission
Yum, TSP, Yang, Y
core  

FEWT: Frequency‐Enhanced Wavelet‐Based Transformer for Multimodal Wheeled Bimanual Manipulation

open access: yesSmartBot, EarlyView.
An embodied mobile bimanual robot learns dexterous manipulation skills through imitation learning with multimodal perception. The integration of vision, proprioception, and tactile sensing establishes a comprehensive perception–action loop, enabling the robot to continuously understand, interact with, and adapt to complex physical environments.
Jiaxin Huang   +6 more
wiley   +1 more source

Packet Flow Based Reinforcement Learning MAC Protocol for Underwater Acoustic Sensor Networks

open access: yesSensors, 2021
Medium access control (MAC) is one of the key requirements in underwater acoustic sensor networks (UASNs). For a MAC protocol to provide its basic function of efficient sharing of channel access, the highly dynamic underwater environment demands MAC ...
Ibrahim B. Alhassan, Paul D. Mitchell
doaj   +1 more source

High-Throughput Random Access via Codes on Graphs [PDF]

open access: yes, 2010
Recently, contention resolution diversity slotted ALOHA (CRDSA) has been introduced as a simple but effective improvement to slotted ALOHA. It relies on MAC burst repetitions and on interference cancellation to increase the normalized throughput of a ...
Paolini, Enrico   +3 more
core  

Short-term Fairness Analysis of Connection-based Slotted-Aloha

open access: yes, 2023
Slotted-Aloha (S-Aloha) has been widely employed in random access networks owing to its simple implementation in a distributed manner. To enhance the throughput performance of the S-Aloha, connection-based slotted-Aloha (CS-Aloha) has been proposed in ...
김유라
core   +1 more source

Exploring the Integration of Trauma‐ and Violence‐Informed Research Principles in Longitudinal Youth Mental Health Research: An Arts‐Based Protocol

open access: yesHealth Expectations, Volume 29, Issue 6, December 2026.
ABSTRACT Background Youths' engagement and participation experiences within quantitative, longitudinal mental health studies remain underexplored. Youth with complex mental health needs have unique research participation experiences, underscoring the need for research approaches that strengthen relationality, trust, and engagement. Trauma‐ and violence‐
Alexe Bernier   +5 more
wiley   +1 more source

Daily Multi‐Leaf Collimator positional error prediction using machine learning: A Dynalog‐based approach for patient specific quality assurance

open access: yesJournal of Applied Clinical Medical Physics, Volume 27, Issue 11, November 2026.
Abstract Background Accurate positioning of multi‐leaf collimators (MLCs) is critical for ensuring the dosimetric precision of intensity‐modulated radiation therapy (IMRT). Nonetheless, daily MLC positional variations can degrade treatment accuracy, emphasizing the need for robust methodologies to detect and predict these deviations. Purpose This study
Samira Aghaei Akizi   +4 more
wiley   +1 more source

Adaptive-opportunistic Aloha: A media access control protocol for unmanned aerial vehicle–wireless sensor network systems

open access: yesInternational Journal of Distributed Sensor Networks, 2016
Recognizing that data collection in a unmanned aerial vehicle–wireless sensor network system is significantly different from that in a conventional wireless sensor network system, we propose a media access control protocol called adaptive-opportunistic ...
Ling Wang, Hanshang Li, Yingtao Jiang
doaj   +1 more source

Evaluasi Coded Random Access untuk Visible Light Communication pada Model Kanal Non-Line Of Sight

open access: yesJurnal Elkomika, 2022
ABSTRAK Penggunaan Non-Orthogonal Multiple Access (NOMA) pada sistem komunikasi dapat memberi kebebasan bagi user untuk mengirimkan informasi secara bersamaan tanpa harus memperebutkan timeslot ataupun frekuensi.
BRIAN PAMUKTI   +2 more
doaj   +1 more source

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