in industrial robotic manipulator, due to the presence of quite nonlinear dynamic and structural and nonstructural uncertainties, a precise model is not easily obtained. as a result, designing a controller with a suitable function based on system model is a challenging issue. sliding mode control is a robust control with numerous applications which can overcome the aforementioned uncertainties....

The last few years have seen considerable investment in the security of industrial control systems. In the power sector, there has been a focus on operational measures directed by NERC, while technical solutions have been proposed through the IEC and the ISA. Many of these proposals use cryptography to secure communications, so that some of the defensive effort can be moved from the perimeter t...

Resources and services are accessible in pervasive computing environments from anywhere and at any time. Also, due to ever-changing nature of such environments, the identity of users is unknown. However, users must be able to access the required resources based on their contexts. These and other similar complexities necessitate dynamic and context-aware access control models for such environmen...

today’s organizations, in chaos, complexities, diverse, dynamic, uncertainties, and rapid and increasingly changes in technologies, markets, and life qualities, are forced to search of leaders who having the least mistakes in their decision-makings; the leaders who make the right decisions with a calculative and scrupulous sense, and serve right and suitable behaviors for guiding and leading th...

Despite decades of research into artificial intelligence, today’s computer systems still require extensive manual effort to program and to customize to our needs. These current limitations motivate my research, which aims to create autonomous agents that can adapt to the complexities and uncertainties of the real world. I hope to develop what I believe is the missing ingredient: knowledge repre...