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In numerous computational applications in mechanics, in engineering, as well as, in financial issues, the ability of manipulating instantly the state vector from the input is more than significant. Thus, in this paper, we extend a method for the instantly state transferring of linear singular descriptor differential systems, which is based on impulsive distributions. Using linear algebra techniques...
Resource conflict is an outstanding problem in concurrent multiple projects with sharing a common and limited resource pool, and it often results in lower performance of these projects. Therefore, it is important and urgent to find an effective method for scheduling multiple projects with limited resources. A mathematical model for the multi-project scheduling problem with resource-constrained is...
This paper presents an exhaustive study into the different topologies of virtual ambiguous keyboards that operate by scanning techniques, analyzing the text entry average time (tc) and the average number of user inputs (UIc) per character. An mathematical model shows that in comparison with unambiguous one, text entry, in multi-tap mode, doesn't offers better performance, because both tc and UIc are...
This paper presents a modular architecture for robotic control (MARC) for unconventional unmanned aerial vehicles (UAV). MARC was developed for a double-ducted vertical take-off and landing (VTOL) vehicle, capable of maneuvering within densely obstructed environments. The focus of this paper is to present the characteristics of the MARC architecture for the use of a twin-duct VTOL as an optimal platform...
In this research, an adaptive control system is designed for a safe touchdown of an unmanned helicopter during its landing phase on a 6DOF moving platform. In this paper the landing phase is divided into the approach and touchdown stages. In the first stage, the helicopter tries to attenuate the initial position and direction errors and in the next stage, the platform's attitude is tracked for a safe...
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