Aiming at the position and attitude tracking of coaxial rotor aircraft (CRA), this paper proposes a combinatorial control method of sliding mode control (SMC) coupled with proportional-integral-derivative control (PIDC).Considering the complete description of flight dynamics, aerodynamics and airflow interference, the dynamical model of CRA is esta
Macro study is one approach that combines the rational method based on the results of previous studies Natural Stress Relief by the authority with the empirical method utilizing the survey techniques.The purpose of this macro study is to identify and analyze the potentials, problems, and the limiting factors, and the needs of the regency; and to re
Objective: Obtaining informed consent from hematopoietic stem cell recipients and donors is a critical step in the transplantation process.Anxiety may affect their understanding of the provided information.However, use of audiovisual methods may facilitate understanding.In this prospective randomized study, we investigated the effectiveness of usin
Road signs are prone to extreme winds that cause significant damage.Overhead sign structures can disrupt traffic and cause harm to the traveling public if a failure occurs under extreme wind conditions.In this paper, we employ Computational Fluid Dynamics (CFD) in a comparative study to understand the aerodynamics of standard, porous, and curved si