A hybrid evolutionary algorithm using scalable encoding method for path planning is proposed in this paper. The scalable representation is based on binary tree structure encoding. To solve the problem of hybrid genetic algorithm and particle swarm optimization, the "dummy node" is added into the binary trees to deal with the different lengths of representations. The experimental results show th...

This paper studies the path planning problem for mobile robots to move smoothly and safely along a shorter curvature-constrained path in completely known dynamic environments. The cost of travel is defined by an obstacle-avoidance cost, which is designed as a weighted penetration depth to vertices of obstacles, and a length cost. The path is composed of a pre-specified number of cubic spiral se...

In this paper we present the autonomous, walking humanoids Priscilla, ELVIS and ELVINA and an experiment using evolutionary adaptive systems. We also present the anthropomorphic principles behind our humanoid project and the multistage development methodology. The adaptive evolutionary system used is a steady state evolutionary strategy running on the robot’s onboard computer. Individuals are e...

Knowledge transfer (KT) is an evolutionary process that requires embedding into and assistance from organizational culture. Since the determinants and influence path of KT regarding cultural change are not clear, this study designs a path model from organizational culture to KT through organizational characteristics. The findings demonstrate that the sociability factors of organizational cultur...

Goal: To devise methods that could explore stochastic models that could calculate the likelihood of two homologous metabolic pathways by summing over all evolutionary histories that could relate them. Such a method would open the way for important data analysis, that is presently not possible or at least done by flawed methods: Parameter estimation in the evolutionary process of metabolic pathw...

During the last decade, Unmanned Air Vehicles (UAVs) have replaced piloted aircraft in a broad band of missions, showing a high potential for further growing, especially due to the avoidance of human risk in dangerous environments. Typical present and future roles include weather reconnaissance, offshore and border patrol, search and rescue assisting operations in sea and mountains, aerial phot...

Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000. Approved for public release; further dissemination unlimited. NOTICE: This report was prepared as an account of work sponsore...

Numerous studies suggest that the transition from Australopithecus to Homo was characterized by evolutionary innovation, resulting in the emergence and coexistence of a diversity of forms. However, the evolutionary processes necessary to drive such a transition have not been examined. Here, we apply statistical tests developed from quantitative evolutionary theory to assess whether morphologica...

Captive centers are wholly owned near-shore or offshore subsidiaries that provide IT, business process and R&D services to their parent firms. There are four models for captive centers—basic, hybrid, shared and divested. Each of these models is illustrated by a case example in the full article, which provides an understanding of how parent organizations successfully evolve their captive centers...

cable driven parallel manipulator (cdpm) is a special class of parallel manipulator in which the rigid extensible links are replaced by actuated cables. it is necessary to take into consideration the cable dynamics, i.e.; its mass, flexibility and curved shape for manipulating a long-span cdpm. these terms complicate governing equation of motion in a way that special tactic are applied for simu...