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Jul 28, 2026Open Access
Green hydrogen is increasingly promoted as a key vector for deep decarbonisation and energy system transformation, particularly in regions endowed with abundant renewable resources. However, its economic viability remains highly context dependent and sensitive to system design and financing conditions. Many green hydrogen projects continue to struggle to reach final investment decision due to high production costs and low electrolyser utilisation, despite rapid growth in announced capacity. This...
Apr 22, 2026Open Access
Access to electricity in Mali remains one of the lowest in the world, with a national rate of 51% marked by significant disparities between urban and rural areas. This study assesses the territorial distribution of electricity coverage provided by national electrification services. The methodology is based on the use of geographic information systems combined with multi-criteria decision support analysis to identify the localities concerned. The data used includes municipal demographic statistic...
Feb 25, 2026Open Access
Under-voltage transients represent a critical power quality disturbance that compromises the operational reliability of thermal generation assets, particularly those with aging auxiliary electrical infrastructures. Moreso, the recurrent voltage dip-induces forced outages resulting in reduced constant power production at Hwange Power Station Zimbabwe’s principal coal-fired baseload plant. This research establishes a deterministic resilience framework for the station’s auxiliary systems through an...
Oct 30, 2025Open Access
We present a complete Lie symmetry analysis of the one-dimensional proper-time formulation of Maxwell’s equations with velocity-dependent propagation speed b=√c2+u2. Through systematic application of symmetry methods, we: 1) classify all Lie point symmetries of the system, 2) derive exact invariant solutions via symmetry r...
Oct 20, 2025Open Access
We present a Lie symmetry classification of 2D proper-time Maxwell’s equations, deriving an 8-dimensional Lie algebra and constructing rotationally invariant Bessel function solutions and self-similar solutions with Hadamard regularization. A central-difference/Verlet scheme is stable under the standard Courant condition for numerical solutions. The results model transverse plasma waves in relativistic jets and particle beams in plasma wakefield accelerators [1], preserving causality via ,...
Sep 24, 2025Open Access
Texas College is dedicated to enhancing connectivity and internet bandwidth to support advanced research and collaboration among students and faculty. The Network Management Plan ensures reliable connectivity and security for immersive learning experiences. This paper explores the transformative potential of Cyberinfrastructure at Texas College to reconstruct campus cyberinfrastructure (CC*) through a planning project. This strategy is based on three different layers. The first layer becomes tha...
Jun 19, 2025Open Access
In view of the control problem of hydrogen pressure and flow coupling in the anode subsystem of the Proton Exchange Membrane Fuel Cell (PEMFC) under dynamic load conditions, this paper proposes an intelligent control framework based on the deep deterministic policy gradient (DDPG) algorithm. Firstly, a dynamic model of the fuel cell anode system is established to transform the multivariable coupling control problem into a reinforcement learning state space; secondly, a multi-objective reward fun...
Apr 27, 2025Open Access
This thesis aims to determine the most suitable topology by comparing the advantages of input power redundancy architectures used in avionics units for military aircraft (HA). Redundancy architectures for input power of avionics units were investigated, analyzed using LTSpice and the PCB design was optimized according to the analysis results. Then, based on the experimental and simulation results, the most suitable redundancy architectures were determined according to the criticality levels of a...
Mar 17, 2025Open Access
This paper describes the development and implementation of a control system for a direct current (DC) motor using the Arduino Uno microcontroller, based on the speed and direction control of the motor. DC motors are widely utilized in various applications due to their simplicity and efficiency; however, robotics and automation are only performed effectively through proper control of the operational parameters. This research aims to develop a strong motor control system that can dynamically chang...
Feb 27, 2025Open Access
This study focuses on the design and promotion of a full-process medical waste safe tracking system. It outlines the design concept, advantage analysis, and promotion strategies, offering insights for industrialization and marketization of the product.
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