Developing the infrastructures for preventing non-communicable diseases is one of the most important goals of healthcare context in recent years. In this regard, the number and capacity of preventive healthcare facilities as well as assignment of customers to facilities should be determined for each region. Besides the accessibility, the utility of customers is a determinative factor in partici...

This paper investigates the design of spacecraft attitude stabilization controllers that are robust against actuator faults and external disturbances. A nominal controller is developed initially, using the adaptive backstepping technique, to stabilize asymptotically the spacecraft attitude when the actuators are fault-free. Additive faults and the partial loss of actuator effectiveness are cons...

Graph orientation is a well-studied area of graph theory. A proper orientation of a graph G = (V,E) is an orientationD of E(G) such that for every two adjacent vertices v and u, d D (v) 6= d D (u) where d D (v) is the number of edges with head v in D. The proper orientation number of G is defined as −→χ (G) = min D∈Γ max v∈V (G) d D (v) where Γ is the set of proper orientations of G. We have χ(...

A permanent physical fault in communication lines usually leads to a failure. The feasibility of evolution of a self organized communication is studied in this paper to defeat this problem. In this case a communication protocol may emerge between blocks and also can adapt itself to environmental changes like physical faults and defects. In spite of faults, blocks may continue to function since ...

Extensive quantum error correction is necessary in order to perform a useful computation on noisy computer. Moreover, must be implemented based imperfect parity check measurements that may return incorrect outcomes or inject additional faults into the qubits. To achieve fault-tolerant correction, Shor proposed repeat sequence of until same outcome observed sufficiently many times. Then, one can...

Migraine is a disabling headache disorder. That is characterized by recurrent unilateral pulsatile headaches. It is one of the most common neurological disorder in the world that nearly one billion of people are affected by migraines. The main Migraine’s features are headaches. Accompanying symptoms are nausea, sometimes vomiting, photophobia, neck pain and muscle tension. Its attacks las...