Volume 20, 2021 All the Solutions of the Diophantine Equation $p^3 + q^y = z^3$ with Distinct Odd Primes p, q when y > 3 Nechemia Burshtein Pages 1-4 Download Research on the Operations of Independence Systems Yonghong Li, Li Li, Qingxi Shi and Huiming Duan Pages 5-18 Download An Analysis of the Middle School Students’ Mathematical Academic Achievements with the Attribute Model of Rough Sets Yateng Yue and Zengtai Gong Pages 19-28 Download Information Security Analysis of Chinese Character Captcha Based on Siamese Neural Network Haisheng Song, Pengfei Duan and Riying Qiao Pages 29-38 Download Satellite Navigation Simulation Signal Generation Method Based on GPU Acceleration Pengliang Shi, Shunxiao Wu, Tian Zeng and Rui Xue Pages 39-49 Download Based on Improved Level Set Algorithm to Enhanced Fuzzy C-Means Clustering for Controlled Knife Image Segmentation Cheng Yihui, Zhang Guicang, Han Genliang and Song Yuzhe Pages 51-60 Download Modeling and Optimization of Clean Water Distribution Networks Lucas Edward, Mashaka James Mkandawile and Verdiana Grace Masanja Pages 61-72 Download Sensitivity and Uncertainty Analysis of Variable-Volume Deterministic Model for Endothermic Continuously Stirred Tank Reactor Jean Pierre Muhirwa, Isambi Sailon Mbalawata and Verdiana Grace Masanja Pages 73-89 Download
