https://bbwpublisher.com/index.php/JERA/issue/feedJournal of Electronic Research and Application2025-09-26T14:27:35+08:00Luna Lul.lu@bbwpublisher.comOpen Journal Systems<p align="justify"><em>Journal of Electronic Research and Application (JERA)</em> is an international, peer-reviewed and open access journal which publishes original articles, reviews, short communications, case studies and letters in the field of electronic research and application. The covered topics include, but are not limited to: automation, circuit analysis and application, electric and electronic measurement systems, electrical engineering, electronic materials, electronics and communications engineering, power systems and power electronics, signal processing, telecommunications engineering, wireless and mobile, and communication.</p> <p align="justify"> </p>https://bbwpublisher.com/index.php/JERA/article/view/11318Optimization of Laminating Angles for Skirt Panels of EMUs Front Using Composite Materials Based on the Cheetah Optimizer2025-09-26T14:27:33+08:00Yuqing Mamyq19818977855@163.comChunge Nieniechunge@126.comSiqun Ma251437650@qq.com<p>With the development of composite materials, their lightweight and high-strength characteristics have caused more widespread use from aerospace applications to automotive and rail transportation sectors, significantly reducing the energy consumption during the operation of EMUs (Electric Multiple Units). This study aims to explore the application of composite materials in the lightweight design of EMU front skirts and proposes a design method based on three-dimensional Hashin failure criteria and the Cheetah Optimizer (CO) to achieve maximum lightweight efficiency. The UMAT subroutine was developed based on the three-dimensional Hashin failure criteria to calculate failure parameters, which were used as design parameters in the CO. The model calculations and result extraction were implemented in MATLAB, and the Cheetah Optimizer iteratively determined the optimal laminating angle design that minimized the overall failure factor. After 100 iterations, ensuring structural integrity, the optimized design reduced the weight of the skirt panel by 60% compared to the original aluminum alloy structure, achieving significant lightweight benefits. This study provides foundational data for the lightweight design of EMUs.</p>2025-09-26T14:12:31+08:00Copyright (c) 2025 Author(s)https://bbwpublisher.com/index.php/JERA/article/view/12104Application and Prospects of SDN Technology in Modern Network Management2025-09-26T14:27:34+08:00Aoyu Liteam@bbwpublisher.comYingjie Yangteam@bbwpublisher.com<p>With the rapid development of information technology, the scale of the network is expanding, and the complexity is increasing day by day. The traditional network management is facing great challenges. The emergence of software-defined network (SDN) technology has brought revolutionary changes to modern network management. This paper aims to discuss the application and prospects of SDN technology in modern network management. Firstly, the basic principle and architecture of SDN are introduced, including the separation of control plane and data plane, centralized control and open programmable interface. Then, it analyzes the advantages of SDN technology in network management, such as simplifying network configuration, improving network flexibility, optimizing network resource utilization, and realizing fast fault recovery. The application examples of SDN in data center networks and WAN optimization management are analyzed. This paper also discusses the development status and trend of SDN in enterprise networks, including the integration of technologies such as cloud computing, big data, and artificial intelligence, the construction of an intelligent and automated network management platform, the improvement of network management efficiency and quality, and the openness and interoperability of network equipment. Finally, the advantages and challenges of SDN technology are summarized, and its future development direction is provided.<br><br></p>2025-09-26T14:19:33+08:00Copyright (c) 2025 Author(s)