This book presents current research in the study of expert system software, including algorithms based on paraconsistent annotated logic in expert systems; expert flow systems in the agronomical, industrial, environmental, pharmaceutical and geological fields; expert systems in remote sensing; domain-wide expert system applications; modeling a parser as an expert system; embedded expert systems for flow control of delay sensitive real-time traffic in WLANs; expert systems in fund-raising management and algebraic approaches in the development of rule based expert systems.