Path planning is crucial for the successful mission execution of unmanned aerial vehicles (UAVs). However, feasible paths becomes challenging due to constraints imposed by complex environments and inherent maneuverability UAVs, particularly in large-scale scenarios involving multiple UAVs ( multi-UAV). This paper addresses multi-UAV cooperative path problem, formulating it as a constrained optimization problem proposing evolutionary state estimation-based multi-strategy jellyfish search...

Mobile edge computing (MEC) integrated with wireless power transfer (WPT) has became a promising trend to shorten task delay and prolong battery life of devices (WDs). Introducing the relay technique WPT-MEC system can improve offloading capability energy efficiency, particularly in scenarios poor channel conditions between server WDs. In this paper, we focus on maximizing efficiency (EE) multi-user relay-aided system. The joint optimization configuration relay, charge time fraction,...

Glacial lakes are a sensitive indicator of regional climate change and one the initiators glacier disasters. It is great significance to understand spatial distribution characteristics glacial for exploring their response patterns assessing lake outburst flood (GLOF) susceptibility. Based on Gaofen-1/6 PMS, Sentinel-2A/2B MSI Landsat TM/ETM+/OLI images from 2000 2020, we integrated geographic information technology mathematical statistical methods analyze temporal in Nepal dynamic changes,...

Abstract As the cornerstone of transmission and distribution equipment, power transformer plays a very important role in ensuring safe operation system. At present, technology dissolved gas analysis (DGA) has been widely used fault diagnosis oil-immersed transformer. However, actual scene, limited number samples uneven different types often lead to low overall detection accuracy or few misjudgment. Therefore, method based on TLR-ADASYN balanced data set is presented. This effectively...

Capacitive deionization in environmental decontamination has been widely studied and now requires intensive development to support large-scale deployment. Porous nanomaterials have demonstrated play pivotal roles determining efficiency manipulating form functional architecture one of the most exciting challenges. Such nanostructure engineering applications highlight importance observing, recording, studying basically electrical-assisted charge/ion/particle adsorption assembly behaviors...

<p>Mobile edge computing (MEC) integrated with radio frequency-based wireless power transfer (WPT) has became a promising trend to shorten task delay and achieve sustainable operations of system, as it continuously provides energy devices (WDs) allows computation tasks offloading powerful server nearby. Furthermore, introducing the relay technique WPT-MEC system could improve capability efficiency, especially when condition channels between WDs is poor. In this paper, we seek maximize...

With the rapid development of new energy battery field, repeated charge and discharge capacity electric storage are key directions research. Therefore, selection standards electrode materials electrolyte continuously improved, ordinary can no longer meet needs development. As a type material, nanomaterials have been widely used in many industries due to their special structure properties. Similarly, also provide possibilities for batteries. This paper mainly explores different applications...

Previous studies show that language differences cause corresponding influences on Second Language Acquisition. Based the Corpus of Chinese, English, and Tibetan spoken by Speakers (CETTS), this study conducted English stress production perception experiments analyze acquisition native speakers Tibetan, to find out whether position syllable structures will affect their acquisition. By analyzing 2,176 productions 4,352 response 17 subjects, as well adopting ANOVA analysis Mann-Whitney U test,...

<p>Mobile edge computing (MEC) integrated with radio frequency-based wireless power transfer (WPT) has became a promising trend to shorten task delay and achieve sustainable operations of system, as it continuously provides energy devices (WDs) allows computation tasks offloading powerful server nearby. Furthermore, introducing the relay technique WPT-MEC system could improve capability efficiency, especially when condition channels between WDs is poor. In this paper, we seek maximize...

A major concern in designing sensor networks is the deployment problem. However, establishing an efficient algorithm for real-world problem challenging due to three issues, which are 1) realistic mixed-integer nonlinear programming (MINLP) with mixed-variable; 2) combinatorial subset selection problem; and 3) expensive computational cost fitness evaluation 3-D coverage Therefore, this paper addresses these challenges proposes a surrogate-assisted hybrid metaheuristic mixed-variable...

Path planning for unmanned aerial vehicles (UAVs) remains a crucial prerequisite UAV application in various fields. However, due to the complexity of model, several state-of-the-art methods may encounter challenges finding feasible solutions or be prone getting stuck local optima, especially complex 3D battlefield environment. An adaptive multi-swarm differential evolution algorithm (AMSDE) is put forward address these problems. First, we employ ε-level comparison ensure feasibility...

When the Covid-19 hit China in 2019, Chinese schools adopted online teaching to minimize spread of epidemic. After outbreak passed, remained, and many students experienced academic stress while teaching, causing anxiety for both parents. It is necessary investigate factors that contribute when teaching. The research used a questionnaire survey more than three hundred high school several districts find out cause during results show can influence Firstly, there significant positive correlation...