Computer operating system 13 Dynamics 4 Computer science 3 History 3 Political Science 3 Adaptive filters 2 Artificial intelligence 2 Blood Transfusion 2 Code division multiple access 2 Data warehousing 2 Design and construction 2 Engineering 2 Fish trade 2 Forensic psychology 2 Human-computer interaction 2 IMS secondary indexing 2 Intelligent control systems 2 Lasers 2 Least squares 2 Library and Information Science 2 MATHEMATICS / General 2 Management 2 Marketing 2 Mathematical models 2 Multiprocessors 2 Optical fiber communication 2 PSYCHOLOGY / Applied Psychology 2 Philosophy, Indic 2 Plant Protection 2 Quantum theory 2