Results 51 to 60 of about 549,445 (212)

Under-actuated USV path following control under multiple constraints

open access: yesAIP Advances, 2022
The path following control of an under-actuated unmanned surface vehicle (USV) under the constraints of rudder angle, rudder velocity, and rudder response time in the disturbing environment is studied, and a cascaded path following control system based ...
Hongbin Wang   +4 more
doaj   +1 more source

Quantum Damped Harmonic Oscillator [PDF]

open access: yes, 2012
In this chapter we treat the quantum damped harmonic oscillator, and study mathematical structure of the model, and construct general solution with any initial condition, and give a quantum counterpart in the case of taking coherent state as an initial ...
Fujii, Kazuyuki
core   +2 more sources

Calculation Method of Torpedo Discovery Probability by Combining Analytical and Simulation Methods

open access: yes水下无人系统学报
The analytical method and simulation method are commonly used to calculate the discovery probability of acoustic homing torpedoes. The analytical method is fast but only applicable to some parameter error types. The simulation method is applicable to all
Zhen DAI, Yong YAN, Xiangzhong SHEN
doaj   +1 more source

Integrated Structural Health Assessment Using Piezoelectric Active Sensors

open access: yesShock and Vibration, 2005
This paper illustrates an integrated approach for identifying structural damage. The method presented utilizes piezoelectric (PZT) materials to actuate/sense the dynamic response of the structures.
Jeannette R. Wait   +2 more
doaj   +1 more source

Application of ant colony and immune combined optimization algorithm in path planning of unmanned craft

open access: yesAIP Advances, 2022
The ant colony optimization (ACO) algorithm is improved and further integrated with the immune algorithm (IA) to address its problems, such as slow convergence, local optimum, and premature convergence in the path planning.
Hongbin Wang, Jianqiang Zhang, Jiao Dong
doaj   +1 more source

Robust Fixed-Time Adaptive Fault-Tolerant Control for Dynamic Positioning of Ships with Thruster Faults

open access: yesApplied Sciences
The ship dynamic positioning system has long been a subject of great interest due to the intricate and unpredictable nature of the maritime environment, which affects its dependability and timeliness.
Yuanyuan Zhang   +2 more
doaj   +1 more source

The Relief on the Door of the Msho Arakelots Monastery (1134) as a Source for Studying Arms and Armour of Medieval Armenian Warriors

open access: yesStudia Ceranea, 2019
Byzantium’s arms and armours were researched by many historians. For that reason, the military history of the medieval Roman Empire enjoyed a dominant position in medieval historiography, with the consequence that very often the military history of small
Dmytro Dymydyuk
doaj   +1 more source

Analytical study of movement of the lunge by the foil Weapon of the first player in germany [PDF]

open access: yesمجلة الرافدين للعلوم الرياضية, 2007
The study aims at expounding some biomechanical variables for the executing the Lunge stabbing during competition. The study sample consisted of one female player, the champion of Germany.
Obei Ramiz Abdulghany   +2 more
doaj   +1 more source

New proposal for the detection of concealed weapons [PDF]

open access: yes, 2007
A new concealed weapon detection system able to work in open areas without invading individual privacy is presented. This approach is based on pulse induction technology.
Agurto Goya, Alan, Sibley, Martin J.N.
core  

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