We describe a system that can separate and recognize the simultaneous speech of two speakers from a single channel recording and compare the performance of the system to that of human subjects. The system, which we call Iroquois, uses models of dynamics to achieve performance near that of human listeners. However the system exhibits a pattern of performance across conditions that is different f...

William M. Land is with the Neurocognition and Action Research Group, Bielefeld University, Bielefeld, Germany. Gershon Tenenbaum is with the College of Education, Florida State University, Tallahassee, Florida. Paul Ward is with the Centre for Sports Science & Human Performance, University of Greenwich, Chatham Maritime, UK. Christian Marquardt is with Science & Motion GmbH, Munich, Germany. E...

An extension of Klahr and Dunbar's (1988) Dual space model of scientific discovery is presented. We propose that, in addition to search in an experiment space and a hypothesis space, scientific discovery involves search in two additional spaces: the space of data representations and the space of experimental paradigms. That is, discoveries often involve developing new terms and adding new featu...

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Human factors are among the main elements affecting the reliability of nondestructive examinations (NDE). In a man-machine system, human reliability is affected by many factors (performance shaping factors) whose influence on reliability cannot be easily expressed quantitatively. This paper identifies and ranks 59 perform-ance shaping factors by using a fuzzy reasoning method and proposes a pro...

In today's competitive market, quality has an important role in manufacturing system. The manufacturers attempt to maintain their production system in a proper condition to produce high quality products. One of the key factors to achieve this goal is maintenance policy. Most studies on maintenance focused on machines and less attention has been paid to human resources as the most important fact...