Zobrazeno 1 - 10
of 357
pro vyhledávání: '"Ha Xuan"'
Publikováno v:
IEEE Access, Vol 12, Pp 109409-109415 (2024)
Today, unmanned aerial vehicles (UAVs) are extensively employed in wireless communication systems due to their mobility and exceptional maneuverability. With the advantage of flying high to increase the line of sight (LOS) probability with ground use
Externí odkaz:
https://doaj.org/article/2efbe85c289a45b9a183955b8baccdc5
Autor:
Ha Xuan Linh, Pham Hoai Linh, Duong Dinh Tuan, Pham Huong Quynh, Nguyen Xuan Hoa, Dang Van Thanh, Hoang Phu Hiep, Nguyen Quoc Dung
Publikováno v:
Heliyon, Vol 10, Iss 3, Pp e25195- (2024)
Cuprous oxide/copper/cupric oxide nanoparticles were synthesized through a hybrid process involving anodic dissolution and a controlled redox reaction between NaOH and glucose in the solution. The study demonstrates the structural manipulation of the
Externí odkaz:
https://doaj.org/article/f1f0c46e329e4c6b928b898c0627cca5
Publikováno v:
Open Linguistics, Vol 9, Iss 1, Pp p. 209-39 (2023)
This replication study examined the effects of writing prompt type on second language (L2) learners’ writing performance. Fifty undergraduate academic and professional writing course pupils wrote narrative essays about a past event (recalling group
Externí odkaz:
https://doaj.org/article/708924700b634536a5f9c36a29ccbeaf
Autor:
Hoang Ngoc Tran, Ty Trung Nguyen, Hung Quang Cao, Ton Hoang Nguyen, Ha Xuan Nguyen, Jae Wook Jeon
Publikováno v:
IEEE Access, Vol 10, Pp 18820-18831 (2022)
This paper proposes a new online auto-tuning method to improve the accuracy and reduce the tuning time of permanent magnet synchronous motor (PMSM) drives. Under varying loads, the ability to tune the controllers of PMSM drives using optimal tuning t
Externí odkaz:
https://doaj.org/article/e09a6bb18d974d10b16b1945fc33d431
Autor:
Rachel Schambow, Luis G. Giménez-Lirola, Vu Duc Hanh, Lai Thi Lan Huong, Nguyen Thi Lan, Pham Hong Trang, Do Duc Luc, Ha Xuan Bo, Vo Dinh Chuong, Rolf Rauh, William Nelson, Juan Carlos Mora-Díaz, Albert Rovira, Marie R. Culhane, Andres M. Perez
Publikováno v:
Frontiers in Veterinary Science, Vol 10 (2023)
IntroductionDiagnostic test evaluation for African swine fever (ASF) in field settings like Vietnam is critical to understanding test application in intended populations for surveillance and control strategies. Bayesian latent class analysis (BLCA) u
Externí odkaz:
https://doaj.org/article/c438cf2d1cf248adb6d4847a2236805b
Publikováno v:
IEEE Access, Vol 9, Pp 19127-19138 (2021)
This paper proposes a linear compensator algorithm to improve the performance of an absolute multipolar magnetic encoder (AMPME). An AMPME is an absolute magnetic rotary encoder that uses a multipolar magnet (MPM) to increase the resolution. The reso
Externí odkaz:
https://doaj.org/article/3c73bf4ddbf147b3a6848c94118cb721
Autor:
Ha Xuan Nguyen, Hung Quang Cao, Ty Trung Nguyen, Thuong Ngoc-Cong Tran, Hoang Ngoc Tran, Jae Wook Jeon
Publikováno v:
IEEE Access, Vol 9, Pp 75415-75425 (2021)
This paper proposes a robot calibration method that uses an extended Kalman filter (EKF) and a neural network based on Levenberg–Marquardt combined accelerated particle swarm optimization (LMAPSO) to improve the accuracy of the robot’s absolute p
Externí odkaz:
https://doaj.org/article/e3aa288310a34289815105105f5c2372
Publikováno v:
IEEE Access, Vol 9, Pp 132558-132568 (2021)
This paper combines the extended Kalman filter (EKF), dual quantum-behaved particle swarm optimization (DQPSO), and adaptive neuro-fuzzy inference system (ANFIS) to propose a novel robot calibration method. Robot precision is influenced by kinematic
Externí odkaz:
https://doaj.org/article/2fd30e85a4a4476dbe7b7ad8324f707d
Autor:
Phuong My Ton Nu, Nguyen Thi Thanh Hai, Nguyen Thi Thu Thuy, Nguyen Vinh Phu, Nguyen Thi Huong, Doan Thi Hang Nga, Ha Xuan Quoc Huy, Tran Thai Hoa
Publikováno v:
Tạp chí Khoa học Đại học Huế: Khoa học Tự nhiên, Vol 129, Iss 1D, Pp 25-31 (2020)
Silver nanoparticles were synthesized from silver sulfate by using the chemical reduction method with dextran as both a reducing agent and a protective agent. The influence of reaction temperature, time, and initial pH on the synthesis was investigat
Externí odkaz:
https://doaj.org/article/5e12b26054dd4a9b84b9a8eeb5437e0c
Publikováno v:
IEEE Access, Vol 8, Pp 31409-31419 (2020)
This paper proposes a stable adaptive gradient descent for harmonic-disturbance rejection as a tool for grid-power signal processing, magnetic rotary encoders, and permanent-magnet synchronous motors. The method can be widely applied to increase the
Externí odkaz:
https://doaj.org/article/2e35f482d2eb4b07b33bd944e3231cc4