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The settlement of the collision-free path planning problem is considered as a complicated objective and is of vital importance in systems comprising one or multiple robots. In multi-robots systems, the path planning problem is based on cooperation. In such systems, the robots dynamically exchange roles in order to complete complex tasks, such as moving in(More)
UNLABELLED Crown discoloration can be induced by root canal sealer remnants following root canal treatment. OBJECTIVE The aim of this study was to evaluate chromatic alterations in human tooth crowns induced by a Mineral Trioxide Aggregate-based sealer (MTA Fillapex®) and a commonly used ZnOE-based sealer (Roth-811). The tested null hypothesis was that(More)
There is increasing literature suggesting a link between attention-deficit hyperactivity disorder (ADHD) and eating disorders (EDs), especially bulimia nervosa. ADHD is under-diagnosed in girls and children of high intelligence are typically missed. We identified a case of a 23-year-old woman suffering from severe bulimia nervosa and previously unsuspected(More)
Caffeine is one of the most widespread psychotropic substances in the world. It exerts multiple effects on the brain including adenosine receptor antagonism, and thereby has been found to modulate aspects of cognition, including attention, in animal models and in healthy human volunteers. This review considers what is known of the effects of caffeine on(More)
One of the major tasks in the field of robotics is the path planning problem. In systems consisted of numerous robots, the creation of collision free trajectories becomes even more complex. Such robotic teams must avoid all detected obstacles while further tasks must be achieved such as forming specific patterns. In this paper, a Cellular Automaton (CA)(More)