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A distributed system is a system with multiple autonomous computers managed by a coherent operating system. The main purpose is to increase the performance/cost ratio of the system. The multiple computers are transparent to users. A user uses a distributed system like a simplex computer. It is up to the operating system to select the best computer, find and transport all the input files to that...

The design and implementation of the z/VMt SCSI (Small Computer System Interface) I/O subsystem is described. z/VM is an operating system that provides multiple virtual IBM System ze machines on a single IBM System z computer. The approach adopted herein allows the reuse of entire device drivers from AIX 5Le, a completely different operating system, essentially unchanged. AIX 5L is the IBM UNIX...

The design of the computer system was significantly changed due to the emergence and popularization of the multicore processors. Moving to the advanced multicore processors, moving to the heterogeneous computer systems and increasing of the integrity level between computer system components are the main trends of the computer systems development. Significant changes in the computer systems desi...

In this research study, energy, exergy and economic analyses is performed for a combined cycle power plant (CCPP) with a supplementary firing system. The purpose of this analyses is to evaluate the economic feasibility of a CCPP by applying an optimization techniques based on Evolutionary algorithms. Actually, the evolutionary algorithms of Firefly, PSO and NSGA-II are applied to minimize the c...