hans kelsen is one of the most famous legal philosophers in the entire world that his legal thoughts have always been drawing attention and critics. pure theory of law, unity of law system and logic of law system are his the most famous theories . in this article, we put forward these theories and challenge them.

The theory of constraints is an approach to production planning and control that emphasizes on the constraints to increase throughput by effectively managing constraint resources. One application in theory of constraints is product mix decision. Product mix influences the performance measures in multi-product manufacturing system. This paper presents an alternative approach by using of goal pro...

The precise control of complex quantum systems promises numerous technological applications including digital computing. complexity such devices renders the certification their correct functioning a challenge. To address this challenge, methods were developed in last decade. In tutorial, we explain prominent protocols for certifying physical layer described by states and processes. Such are par...