Title	Performance Analysis of Improved Cache Invalidation Scheme in Mobile Computing Environment
Author	Miraclin Joyce Pamila J.C., Thanushkodi K
Citation	Vol. 9  No. 9  pp. 153-160
Keywords	Cache invalidation, Transaction processing in mobile networks, Consistency preservation, concurrency control

Title	Query Processing and Optimization in Distributed Database Systems
Author	B.M. Monjurul Alom, Frans Henskens, Michael Hannaford
Citation	Vol. 9  No. 9  pp. 143-152
Keywords	Join, Semijoin, Query, FRS, PRS, LR, and Optimization

Title	Experimental Result of Particle Collision Algorithm for Solving Course Timetabling Problems
Author	Anmar Abuhamdah, Masri Ayob
Citation	Vol. 9  No. 9  pp. 134-142
Keywords	Course Timetabling Problem, Meta-Heuristics, Particle Collision Algorithm, Simulated Annealing, Great Deluge

Title	Major Milestones of Modern Payment Systems
Author	B. Tirimula Rao, M. Dileep, E. Vedavalli, K. Aditya, S. Bindu
Citation	Vol. 9  No. 9  pp. 123-133
Keywords	Payment system, Financial Institutions, E-commerce, Electronic Payment