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The minimum and maximum levels of each component were chosen based on typical volume fractions for non-air-entrained concrete with the constraint that the volume fractions sum to unity . I am glad there are more class fans than sore winner fans . The contributions of this work are new methods for tracking ball and players observed by multiple robots , team coordination methods for strategic team formation and dynamic role assignment , a rich set of basic skills allowing to respond to large range of situations in an appropriate way , an action selection method based on behavior networks as well as a method to learn the skills and their selection . The ST92141 has been designed to provide robust performance in cost-sensitive , electrically noisy applications ; enhanced noise immunity is supported by features such as a hardware Watchdog Timer , a Low Voltage Detection circuit , a special asynchronous Emergency pin that puts all motor driver output pins in high impedance , and high hysteresis inputs . However , the development needs of developing countries are still great , and the deployment of limited aid resources with optimal efficiency and effectiveness to achieve results in various fields remains a constant challenge .