Results 221 to 230 of about 26,785 (264)

A new time‐stepping strategy and boundary treatment to improve recent 2D traffic model

open access: yesZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Volume 106, Issue 1, January 2026.
Abstract We show how a recently published 2D model for traffic flow can be further improved. Besides other improvements and simplifications, we present not only a method to compute the necessary time step restrictions, but also a subcycling for the inflow and outflow.
Friedemann Kemm
wiley   +1 more source

Contrasting Patterns in Ambient PM2.5 Exposure Disparity Across Population Subgroups in Urban and Rural India

open access: yesGeoHealth, Volume 10, Issue 1, January 2026.
Abstract Ambient PM2.5 exposure poses the greatest environmental risk to public health in India. While several studies have quantified the changing patterns of exposure, the extent of inequality in exposure among population subgroups at the sub‐national scale remains unknown.
Debajit Sarkar   +9 more
wiley   +1 more source

A Massive Grant‐Free Random Access Scheme Based on Spectrum Sensing and Preamble Delay

open access: yesIET Communications, Volume 20, Issue 1, January/December 2026.
This paper introduces cognitive radio (CR) and preamble delay (PD) to reduce access collisions, together with non‐orthogonal multiple access (NOMA) to improve spectrum efficiency, and thus proposes an efficient CR‐NOMA‐PD‐based massive grant‐free random multiple access scheme.
Jing Zhang   +5 more
wiley   +1 more source

Communication‐Security Co‐Design for Federated Learning in Grant‐Free NOMA IoT Networks

open access: yesIET Communications, Volume 20, Issue 1, January/December 2026.
This article presents SA‐PPO, a Security‐Aware Proximal Policy Optimisation framework for federated learning over grant‐free NOMA (non‐orthogonal multiple access) in IoT networks. By jointly optimising access control, resource allocation, and trust‐weighted aggregation using cross‐layer indicators, SA‐PPO enhances both communication reliability and ...
Emmanuel Atebawone   +5 more
wiley   +1 more source

Analytical Examination of Strategic and Purposeful Behaviours in Peer‐to‐Peer Energy Trading

open access: yesIET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
This paper examines the strategic behaviour of prosumers in the P2P energy trading market. Prosumers may reduce the amount of energy they supply with the aim of increasing the clearing price. On the other hand, the market‐clearing mechanism is designed to mitigate such behaviours.
Ali Izanlo   +5 more
wiley   +1 more source

Integrating Berthing Plan and Container Transshipment at the Sea‐Rail Intermodal Terminal

open access: yesIET Intelligent Transport Systems, Volume 20, Issue 1, January/December 2026.
This article integrates the sea‐rail intermodal container transshipment optimization problem with berth planning. A mathematical programming model is formulated and a heuristic solution approach is proposed. The approach demonstrates the potential to reduce overall operational costs and various operational factors are analysed to provide managerial ...
Weite Pan   +3 more
wiley   +1 more source

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