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Engineering Letters
Objectives and Scope Engineering Letters is published with both online and print versions. The journal covers the frontier issues in the engineering and the computer science and their applications in business, industry and other subjects. The computer science is a branch of engineering science that studies computable processes and structures. It contains theories for understanding computing systems and methods; computational algorithms and tools; methodologies for testing of concepts. The subjects covered by the journal include artificial intelligence, bioinformatics, computational statistics, database, data mining, financial engineering, hardware systems, imaging engineering, industrial engineering, internet computing, networking, operations research, scientific computing, software engineering, and their applications etc. Printed copies of the journal are distributed to accredited universities and government libraries. All the papers in the journal are also available freely with online full-text content and permanent worldwide web link. The abstracts will be indexed and available at major academic databases. ISSN: 1816-0948 (online version); 1816-093X (print version) Subject Category: Computer science and engineering Published by: International Association of Engineers
Contents: Volume 33 Issue 8 (Online version available: 1 August 2025) [Cover page] [Table of Content]
JOURNAL PAPERS: Research on Nanosecond Laser Cleaning Technology of Aerospace Titanium Alloy Oxide Film Zhichao Li, Qingwen Yun, and Donghe Zhang Engineering Letters, 33:8, pp2873-2877 [Online Full Text] Zhichao Li, Qingwen Yun, and Donghe Zhang, "Research on Nanosecond Laser Cleaning Technology of Aerospace Titanium Alloy Oxide Film," Engineering Letters, vol. 33, no. 8, pp2873-2877, 2025
The Steady-state Indexes of Single Machine Repairable System with Two Unreliable Servers You Lyu, Tingyu Yan, Suran Kong, and Wenguo Jiang Engineering Letters, 33:8, pp2878-2884 [Online Full Text] You Lyu, Tingyu Yan, Suran Kong, and Wenguo Jiang, "The Steady-state Indexes of Single Machine Repairable System with Two Unreliable Servers," Engineering Letters, vol. 33, no. 8, pp2878-2884, 2025
Dynamic Behaviors of a Two-Species Amensalism Model with Wind-Dependent Refuge Shiyu Cai, Zuzhi Cai, and Fengde Chen Engineering Letters, 33:8, pp2885-2895 [Online Full Text] Shiyu Cai, Zuzhi Cai, and Fengde Chen, "Dynamic Behaviors of a Two-Species Amensalism Model with Wind-Dependent Refuge," Engineering Letters, vol. 33, no. 8, pp2885-2895, 2025
Prediction and Analysis of Durability Monitoring Data of High-Piled Wharf Based on GABP Neural Network Method Hongbiao Liu, Zhixiang Wang, Huifang Liu, Lei Zhang, Shuqing Ye, and Pengrui Zhu Engineering Letters, 33:8, pp2896-2906 [Online Full Text] Hongbiao Liu, Zhixiang Wang, Huifang Liu, Lei Zhang, Shuqing Ye, and Pengrui Zhu, "Prediction and Analysis of Durability Monitoring Data of High-Piled Wharf Based on GABP Neural Network Method," Engineering Letters, vol. 33, no. 8, pp2896-2906, 2025
Surface Defect Detection and Identification of Hot Rolled Strip Steel Based on Combined Feature Extraction and Probabilistic Neural Network Chang Cai, Junsheng Wang, Jiawei Liu, Hongmei Zhang, and Lei Song Engineering Letters, 33:8, pp2907-2915 [Online Full Text] Chang Cai, Junsheng Wang, Jiawei Liu, Hongmei Zhang, and Lei Song, "Surface Defect Detection and Identification of Hot Rolled Strip Steel Based on Combined Feature Extraction and Probabilistic Neural Network," Engineering Letters, vol. 33, no. 8, pp2907-2915, 2025
Optimized YOLOv8 Model for the Automatic Detection of Pulmonary Nodules Zichao Liu, Lili Wei, and Tingqiang Song Engineering Letters, 33:8, pp2916-2924 [Online Full Text] Zichao Liu, Lili Wei, and Tingqiang Song, "Optimized YOLOv8 Model for the Automatic Detection of Pulmonary Nodules," Engineering Letters, vol. 33, no. 8, pp2916-2924, 2025
Infrared Dim Small Target Detection via Fractional-order TV and Nonnegative L1-norm Yebin Chen, Guimeng Cao, and Wei Xue Engineering Letters, 33:8, pp2925-2938 [Online Full Text] Yebin Chen, Guimeng Cao, and Wei Xue, "Infrared Dim Small Target Detection via Fractional-order TV and Nonnegative L1-norm," Engineering Letters, vol. 33, no. 8, pp2925-2938, 2025
An Implementation of Self-study Exercise Problems for Entry-level SQL-Python Database Programming Ni Wayan Wardani, Nobuo Funabiki, Putu Sugiartawan, Anak Agung Surya Pradhana, I Nyoman Darma Kotama, and I Nyoman Agus Suarya Putra Engineering Letters, 33:8, pp2939-2948 [Online Full Text] Ni Wayan Wardani, Nobuo Funabiki, Putu Sugiartawan, Anak Agung Surya Pradhana, I Nyoman Darma Kotama, and I Nyoman Agus Suarya Putra, "An Implementation of Self-study Exercise Problems for Entry-level SQL-Python Database Programming," Engineering Letters, vol. 33, no. 8, pp2939-2948, 2025
Twin Margin Hyperplanes Distribution Machine with Equality Constraints Gong Rongfen, Chu Maoxiang, Liu Ling, and Liu Liming Engineering Letters, 33:8, pp2949-2960 [Online Full Text] Gong Rongfen, Chu Maoxiang, Liu Ling, and Liu Liming, "Twin Margin Hyperplanes Distribution Machine with Equality Constraints," Engineering Letters, vol. 33, no. 8, pp2949-2960, 2025
Improved Pelican Optimization Algorithm Based on African Vulture Satiety Rate and Mathematical Distributions Hao-Ming Song, Cheng Xing, Jie-Sheng Wang, and Xin-Yi Guan Engineering Letters, 33:8, pp2961-2976 [Online Full Text] Hao-Ming Song, Cheng Xing, Jie-Sheng Wang, and Xin-Yi Guan, "Improved Pelican Optimization Algorithm Based on African Vulture Satiety Rate and Mathematical Distributions," Engineering Letters, vol. 33, no. 8, pp2961-2976, 2025
PASFormer: A Progressive Artwork Segmentation Transformer for High-Precision Artistic Text Image Segmentation Guinan Wu, and Qinghong Wu Engineering Letters, 33:8, pp2977-2988 [Online Full Text] Guinan Wu, and Qinghong Wu, "PASFormer: A Progressive Artwork Segmentation Transformer for High-Precision Artistic Text Image Segmentation," Engineering Letters, vol. 33, no. 8, pp2977-2988, 2025
Fast Stable Control of Microgrid System Based on Adaptive Non-Singular Terminal Sliding Mode Yong Xu, Jinxin Zhu, Zhanyang Xu, and Wei Wang Engineering Letters, 33:8, pp2989-2995 [Online Full Text] Yong Xu, Jinxin Zhu, Zhanyang Xu, and Wei Wang, "Fast Stable Control of Microgrid System Based on Adaptive Non-Singular Terminal Sliding Mode," Engineering Letters, vol. 33, no. 8, pp2989-2995, 2025
LSTM Short-term Electricity Load Forecasting Model Based on Improved Sparrow Search Algorithm and Ensemble Learning Ze Gong, and Yong Zhang Engineering Letters, 33:8, pp2996-3014 [Online Full Text] Ze Gong, and Yong Zhang, "LSTM Short-term Electricity Load Forecasting Model Based on Improved Sparrow Search Algorithm and Ensemble Learning," Engineering Letters, vol. 33, no. 8, pp2996-3014, 2025
PSTRFormer: Leveraging Segmentation and Attention for Improved Text Recognition in Complex Environments XiaoMan Bai, and Ji Zhao Engineering Letters, 33:8, pp3015-3024 [Online Full Text] XiaoMan Bai, and Ji Zhao, "PSTRFormer: Leveraging Segmentation and Attention for Improved Text Recognition in Complex Environments," Engineering Letters, vol. 33, no. 8, pp3015-3024, 2025
Integrating CEEMDAN-EWT and Hybrid Neural Network for Traffic Flow Forecasting Yang Xu, Junyan Hu, Cheng Yao, Xiaorui Hu, Hexin Peng, and Hongyu Long Engineering Letters, 33:8, pp3025-3039 [Online Full Text] Yang Xu, Junyan Hu, Cheng Yao, Xiaorui Hu, Hexin Peng, and Hongyu Long, "Integrating CEEMDAN-EWT and Hybrid Neural Network for Traffic Flow Forecasting," Engineering Letters, vol. 33, no. 8, pp3025-3039, 2025
Finite Time Identical Synchronization in Full Networks of n Linearly Coupled Dynamical Systems of the Hindmarsh-Rose 3D Type Phan Van Long Em Engineering Letters, 33:8, pp3040-3052 [Online Full Text] Phan Van Long Em, "Finite Time Identical Synchronization in Full Networks of n Linearly Coupled Dynamical Systems of the Hindmarsh-Rose 3D Type," Engineering Letters, vol. 33, no. 8, pp3040-3052, 2025
Research on Optimization Scheduling of Microgrid Based on Multi-strategy Improved Chernobyl Disaster Optimization Algorithm Xiaoge Wei, Yinlong Zhao, Haowei Yao, and Hengjie Qin Engineering Letters, 33:8, pp3053-3065 [Online Full Text] Xiaoge Wei, Yinlong Zhao, Haowei Yao, and Hengjie Qin, "Research on Optimization Scheduling of Microgrid Based on Multi-strategy Improved Chernobyl Disaster Optimization Algorithm," Engineering Letters, vol. 33, no. 8, pp3053-3065, 2025
Research on the Improved YOLOv8 Algorithm for Steel Surface Defect Detection Method Kaidi Liu, and Ji Zhao Engineering Letters, 33:8, pp3066-3077 [Online Full Text] Kaidi Liu, and Ji Zhao, "Research on the Improved YOLOv8 Algorithm for Steel Surface Defect Detection Method," Engineering Letters, vol. 33, no. 8, pp3066-3077, 2025
Cementite Detection in Spherical Pearlite Based on YOLOv9 Lichuan Liu, Yujun Zhang, Xusheng Li, Yixiao Sun, Zhigao Zhao, Chengshuang Yu, Lingchu Wang, and Dongying Ju Engineering Letters, 33:8, pp3078-3085 [Online Full Text] Lichuan Liu, Yujun Zhang, Xusheng Li, Yixiao Sun, Zhigao Zhao, Chengshuang Yu, Lingchu Wang, and Dongying Ju, "Cementite Detection in Spherical Pearlite Based on YOLOv9," Engineering Letters, vol. 33, no. 8, pp3078-3085, 2025
Dual-Attention Fusion Self-Supervised Graph Transformer for Recommendation Shuhui Han, Dan Yang, and Xi Gong Engineering Letters, 33:8, pp3086-3095 [Online Full Text] Shuhui Han, Dan Yang, and Xi Gong, "Dual-Attention Fusion Self-Supervised Graph Transformer for Recommendation," Engineering Letters, vol. 33, no. 8, pp3086-3095, 2025
Pelican Optimization Algorithm Based on Hybrid Strategy for Optimizing Power Flow in Power Systems Xun Liu, Jie-Sheng Wang, Song-Bo Zhang, Yuan-Zheng Gao, and Jia-Hui Zhao Engineering Letters, 33:8, pp3096-3107 [Online Full Text] Xun Liu, Jie-Sheng Wang, Song-Bo Zhang, Yuan-Zheng Gao, and Jia-Hui Zhao, "Pelican Optimization Algorithm Based on Hybrid Strategy for Optimizing Power Flow in Power Systems," Engineering Letters, vol. 33, no. 8, pp3096-3107, 2025
Bidirectional Fusion Enhancement in CDINet for Optimized Salient Object Detection Yuxi Wang, and Yang Xu Engineering Letters, 33:8, pp3108-3118 [Online Full Text] Yuxi Wang, and Yang Xu, "Bidirectional Fusion Enhancement in CDINet for Optimized Salient Object Detection," Engineering Letters, vol. 33, no. 8, pp3108-3118, 2025
Digital Twinning Transformation for Microwave Engineering Education: A Case Study of Student-centered Learning in Module States of the Arts in Liquid Crystals Millimeter-wave Technology for 6G Jinfeng Li, and Haorong Li Engineering Letters, 33:8, pp3119-3128 [Online Full Text] Jinfeng Li, and Haorong Li, "Digital Twinning Transformation for Microwave Engineering Education: A Case Study of Student-centered Learning in Module States of the Arts in Liquid Crystals Millimeter-wave Technology for 6G," Engineering Letters, vol. 33, no. 8, pp3119-3128, 2025
A Multi-Attribute Group Decision-Making Approach Based on Entropy of Single-Valued Neutrosophic Set for TOPSIS Dongsheng Xu, Yuanyuan Peng, Lijuan Hu, and Lin Jiang Engineering Letters, 33:8, pp3129-3138 [Online Full Text] Dongsheng Xu, Yuanyuan Peng, Lijuan Hu, and Lin Jiang, "A Multi-Attribute Group Decision-Making Approach Based on Entropy of Single-Valued Neutrosophic Set for TOPSIS," Engineering Letters, vol. 33, no. 8, pp3129-3138, 2025
Face Bimagic and 1-Antimagic Labelings of Rooted Product of Particular Graph Classes Medini H R, Devadas Nayak C, and Sabitha D'Souza Engineering Letters, 33:8, pp3139-3145 [Online Full Text] Medini H R, Devadas Nayak C, and Sabitha D'Souza, "Face Bimagic and 1-Antimagic Labelings of Rooted Product of Particular Graph Classes," Engineering Letters, vol. 33, no. 8, pp3139-3145, 2025
An Examination of the Tripartite Game Model in E-commerce Channels with Consideration of Rent-Seeking Behavior Xin Liu, Zhen Xu, Qingxia Zhang, and Liang Zhou Engineering Letters, 33:8, pp3146-3152 [Online Full Text] Xin Liu, Zhen Xu, Qingxia Zhang, and Liang Zhou, "An Examination of the Tripartite Game Model in E-commerce Channels with Consideration of Rent-Seeking Behavior," Engineering Letters, vol. 33, no. 8, pp3146-3152, 2025
Research on Steel Surface Defect Detection Algorithm Based on YOLOv12 Jianing Sun, and Yujun Zhang Engineering Letters, 33:8, pp3153-3161 [Online Full Text] Jianing Sun, and Yujun Zhang, "Research on Steel Surface Defect Detection Algorithm Based on YOLOv12," Engineering Letters, vol. 33, no. 8, pp3153-3161, 2025
Stabilization Mechanism and Multi-field Coupling Effect of High Steep Loess Slope under Heavy Rainfall Jinggang Liu, Yaoxian Xie, Jiangtao Liu, Xian Zhao, Xianwen Huang, and Daheng Peng Engineering Letters, 33:8, pp3162-3173 [Online Full Text] Jinggang Liu, Yaoxian Xie, Jiangtao Liu, Xian Zhao, Xianwen Huang, and Daheng Peng, "Stabilization Mechanism and Multi-field Coupling Effect of High Steep Loess Slope under Heavy Rainfall," Engineering Letters, vol. 33, no. 8, pp3162-3173, 2025
Dynamic Behaviors of a Two-Species Lotka-Volterra Competition Model with Wind-Dependent Refuge Guangwen He, Zuzhi Cai, and Fengde Chen Engineering Letters, 33:8, pp3174-3187 [Online Full Text] Guangwen He, Zuzhi Cai, and Fengde Chen, "Dynamic Behaviors of a Two-Species Lotka-Volterra Competition Model with Wind-Dependent Refuge," Engineering Letters, vol. 33, no. 8, pp3174-3187, 2025
DPGAN: Detail-Fidelity and Perception-Optimized Generative Adversarial Network for Infrared Image Super-Resolution Jujian Lv, Xin Liu, Zhijie Xie, Kaihan Lin, Wu Li, Zhiqian Wang, Hangyu Zhou, Rongjun Chen, and Jiawen Li Engineering Letters, 33:8, pp3188-3196 [Online Full Text] Jujian Lv, Xin Liu, Zhijie Xie, Kaihan Lin, Wu Li, Zhiqian Wang, Hangyu Zhou, Rongjun Chen, and Jiawen Li, "DPGAN: Detail-Fidelity and Perception-Optimized Generative Adversarial Network for Infrared Image Super-Resolution," Engineering Letters, vol. 33, no. 8, pp3188-3196, 2025
Two-Grid Domain Decomposition Methods for the Steady-State Navier-Stokes-Darcy Model Hao Zheng, and Liyun Zuo Engineering Letters, 33:8, pp3197-3203 [Online Full Text] Hao Zheng, and Liyun Zuo, "Two-Grid Domain Decomposition Methods for the Steady-State Navier-Stokes-Darcy Model," Engineering Letters, vol. 33, no. 8, pp3197-3203, 2025
Two-Stage Manifold-Based Denoising and Outlier Detection for High-Dimensional Data Lan Li, Dan Wang, Mingli Jing, and Shang Bao Engineering Letters, 33:8, pp3204-3216 [Online Full Text] Lan Li, Dan Wang, Mingli Jing, and Shang Bao, "Two-Stage Manifold-Based Denoising and Outlier Detection for High-Dimensional Data," Engineering Letters, vol. 33, no. 8, pp3204-3216, 2025
Research on Predicting Flotation Concentrate Grade Based on Improved COA Optimized ELM Neural Network Jia Ren, and Yong Zhang Engineering Letters, 33:8, pp3217-3228 [Online Full Text] Jia Ren, and Yong Zhang, "Research on Predicting Flotation Concentrate Grade Based on Improved COA Optimized ELM Neural Network," Engineering Letters, vol. 33, no. 8, pp3217-3228, 2025
Effect of Stub-Position Adjustment of Multi-Mode Resonators in Filtering Antenna Fajri Darwis, Arief Budi Santiko, Taufiqqurrachman, Winy Desvasari, R. Priyo Hartono Adji, Dadin Mahmudin, Puput Dani Prasetyo Adi, Fadil Habibi Danufane, and Ashif Aminulloh Fathnan Engineering Letters, 33:8, pp3229-3234 [Online Full Text] Fajri Darwis, Arief Budi Santiko, Taufiqqurrachman, Winy Desvasari, R. Priyo Hartono Adji, Dadin Mahmudin, Puput Dani Prasetyo Adi, Fadil Habibi Danufane, and Ashif Aminulloh Fathnan, "Effect of Stub-Position Adjustment of Multi-Mode Resonators in Filtering Antenna," Engineering Letters, vol. 33, no. 8, pp3229-3234, 2025
Dynamic Response of Q460 High-Strength Steel Beams Under Near Explosive Loading Xiuhua Zhang, Yalin Guan, and Weijia Zhang Engineering Letters, 33:8, pp3235-3245 [Online Full Text] Xiuhua Zhang, Yalin Guan, and Weijia Zhang, "Dynamic Response of Q460 High-Strength Steel Beams Under Near Explosive Loading," Engineering Letters, vol. 33, no. 8, pp3235-3245, 2025
Study on Regression Prediction of Blood Glucose Levels Based on RFA-CNN Model Weipu Wu, Zhenhua Qu, and Yuan Cao Engineering Letters, 33:8, pp3246-3257 [Online Full Text] Weipu Wu, Zhenhua Qu, and Yuan Cao, "Study on Regression Prediction of Blood Glucose Levels Based on RFA-CNN Model," Engineering Letters, vol. 33, no. 8, pp3246-3257, 2025
Research on Remote Monitoring Data's Accuracy Verification for Heavy-duty Diesel Vehicles' Emission and Energy Consumption Yu Liu, Hao Zhang, Hanzhengnan Yu, Jingyuan Li, Yanyan Yang, Xionghui Zou, Kunqi Ma, Yongkai Liang, Hang Xu, Xiaopan An, and Xi Hu Engineering Letters, 33:8, pp3258-3267 [Online Full Text] Yu Liu, Hao Zhang, Hanzhengnan Yu, Jingyuan Li, Yanyan Yang, Xionghui Zou, Kunqi Ma, Yongkai Liang, Hang Xu, Xiaopan An, and Xi Hu, "Research on Remote Monitoring Data's Accuracy Verification for Heavy-duty Diesel Vehicles' Emission and Energy Consumption," Engineering Letters, vol. 33, no. 8, pp3258-3267, 2025
Deadbeat Model Predictive Control with Virtual Voltage-Vectors to Achieve Constant Common-Mode Voltage for Three-Level T-type Converters Considering Dead-Time Effects Jingmei Guo, Chao Sheng, Youzhi Zeng, Qinglan Tang, and Qing Su Engineering Letters, 33:8, pp3268-3278 [Online Full Text] Jingmei Guo, Chao Sheng, Youzhi Zeng, Qinglan Tang, and Qing Su, "Deadbeat Model Predictive Control with Virtual Voltage-Vectors to Achieve Constant Common-Mode Voltage for Three-Level T-type Converters Considering Dead-Time Effects," Engineering Letters, vol. 33, no. 8, pp3268-3278, 2025
Lightweight Fatigue Driving Detection with StarNet-Enhanced YOLOv8n: A Neural Network Approach Huimin Ge, and Wei Shi Engineering Letters, 33:8, pp3279-3291 [Online Full Text] Huimin Ge, and Wei Shi, "Lightweight Fatigue Driving Detection with StarNet-Enhanced YOLOv8n: A Neural Network Approach," Engineering Letters, vol. 33, no. 8, pp3279-3291, 2025
Force Tracking Control for Lower Limb Exoskeleton Robot based on Chaos Light Spectrum Optimizer Lie Yu, Zhuo Wu, Cong Zhang, and Lei Ding Engineering Letters, 33:8, pp3292-3299 [Online Full Text] Lie Yu, Zhuo Wu, Cong Zhang, and Lei Ding, "Force Tracking Control for Lower Limb Exoskeleton Robot based on Chaos Light Spectrum Optimizer," Engineering Letters, vol. 33, no. 8, pp3292-3299, 2025
Research on Location and Capacity of Electric Vehicle Charging Station Based on CAHA Qingyun Yuan, YaoHui Zhang, Dongming Zhao, Zishen Wang, and Liu Tan Engineering Letters, 33:8, pp3300-3310 [Online Full Text] Qingyun Yuan, YaoHui Zhang, Dongming Zhao, Zishen Wang, and Liu Tan, "Research on Location and Capacity of Electric Vehicle Charging Station Based on CAHA," Engineering Letters, vol. 33, no. 8, pp3300-3310, 2025
Coming Special Issues of Engineering Letters Engineering Letters welcomes author submission of papers concerning any branch of the engineering and the computer science and their applications in business, industry and other subjects. The subjects covered by the journal include artificial intelligence, bioinformatics, computational statistics, database, data mining, financial engineering, hardware systems, imaging engineering, industrial engineering, internet computing, networking, operations research, scientific computing, software engineering, and their applications. With the efforts of the Editorial Board Members of Engineering Letters, the new online version and print version of the journal Engineering Letters has become available to the general public, instead of its old restricted versions. All submitted papers are to be peer-reviewed for ensuring their qualities.
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