Controlling the development of di erent versions of a document can be a complex task, even for a single author to handle. This task is likely to become more complex as the number of authors increases, and more complex still if those authors are distributed geographically with only limited means of communication, such as electronic mail, to connect them. If this last situation makes version cont...

This paper presents an optimal control strategy for elevator group in large buildings. An elevator group controller allocates different elevators to up and down hall calls that coming from different floors. The control strategy is a precondition to minimize mainly the average waiting time of hall calls. In this paper, two genetic algorithms are developed to treat efficiently the elevator group ...

Modern elevator systems in high-rise buildings consist of groups of elevators with centralized control. The group control allocates hall calls to the most suitable elevators by optimizing a cost function. This problem can be viewed as a combination of online scheduling, resource allocation, and stochastic control. The usual performance criterion to be optimized when scheduling passenger pick-up...

Recent advances in neurobiology and clinical medicine have established that the fetus and newborn may experience acute, established, and chronic pain. They respond to such noxious stimuli by a series of complex biochemical, physiologic, and behavioral alterations. Studies have concluded that controlling pain experience is beneficial with respect to short-term and perhaps long-term outcomes. Yet...

In this report a novel control that optimizes passenger service in an elevator group is described. Fuzzy logic and artificial intelligence are applied in the control when allocating landing calls to the elevators. Fuzzy logic is used to recognize the traffic pattern and the traffic peaks from statistical forecasts. In order to form the statistical forecasts, the passenger traffic flow in the bu...

Principal aims of the group Recent years have seen an acceleration of interest in the analysis, management and control of supply chains (SCs). More and more production/manufacturing, distribution and retail organisations are addressing the question of how to develop an effective SC including strategic level, SC business planning and SC short-term operations and control. The main objective of th...

The latest elevator systems have structural differences from traditional systems, such as the use of destination calls, or multiple cars in the same hoistway. This requires the development of new elevator group control systems, which is best done by adopting modern soft-computing methods. We review some of these systems and the results of research so far, and suggest further directions of resea...

This paper introduces a hormone-inspired task assignment system for a group of robots. The system draws on previous work using endocrinebased methodologies, extending them to a group scenario, and incorporating previous work in evolutionary robotics. In the resulting system, performance data generated as part of the lifelong-adaptation functionality is reported between the robots, and used to a...

Reliable data transmission protocols between a sender and a receiver often use feedback from receiver to sender to acknowledge correct data delivery. Such feedback is typically sent as control messages by receiver nodes. Since sending of control messages involves communication overhead, many protocols rely on aggregating a number of control messages and sending them together as a single packet ...

Efficient elevator group control is important for the operation of large buildings. Recent developments in this field include the use of fuzzy logic and neural networks. This paper summarizes the development of an evolution strategy (ES) that is capable of optimizing the neuro-controller of an elevator group controller. It extends the results that were based on a simplified elevator group contr...