using an electric differential (ed) in electric vehicle has many advantages such as flexibility and direct torque control of the wheels during cornering and risky maneuvers. despite its reported successes and advantages, the ed has several problems limits its applicability, for instance, an increment of control loops and an increase of computational effort. in this paper, an electric differenti...

Automatic guided vehicles with omnidirectional wheels have three degrees of freedom (DOF), their full mobility being obtained by virtue of the free rollers around the periphery of the wheels. The choice of the orientation of the roller axes with respect to the wheel axis, along with the wheel orientations with respect to the platform, the number of wheels, etc., are design issues considered her...

A safe and deadlock free lock policy is introduced, called pre-analysis locking. Pre-analysis locking is based on an efficient geometric algorithm which inserts lock and unlock operations into the transactions. Pre-analysis locking is the first safe and deadlock free general locking policy which is not a variant of two-phase locking. It is an approach conceptually different from policies follow...

C is developing a defense innovation system (DIS) as part of a broader effort to construct a national innovation system (NIS) that incorporates a system-of-systems approach. Modeled on China’s commercial-sector economic development zones and investment strategies, the DIS is focused on enhancing integration and interaction among key defense industry actors, institutions, industry sectors, and r...

We enumerate graph homomorphisms to quasi-complete graphs i.e., graphs obtained from complete graphs by removing one edge. The source graphs are complete graphs, quasi-complete graphs, cycles, paths, wheels and broken wheels.