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Error occurs during transferring, storing and retrieving data. Thus error detection and correction is a necessary technique in information technology. Cycle Redundancy Code, CRC, is a common method in error detection. A new method based on data-oriented theory for single and double bit errors correction by using CRC is presented. The conceptual model of presented method as data oriented architecture is designed to implement it with hardware. This method is able to determine the exact place of one and two bits in error and correct them. In a way, nonzero calculated remainder on receiver is compared with remainder field of the content of Problem Solution Data Structure, PSDS, to find the error location, as a solution.

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Abstract-The computational grid provides a promising platform for the deployment of various high-performance computing applications. In computational grid, an efficient scheduling of task onto the processors that minimizes the entire execution time is vital for achieving a high performance.Solving this problem is very hard and many attempts have been made to solve the problem. Using classical algorithms, With regard to the complexity of this problem, is not the good way; so the indefinite method acts better than classical method. Evolutionary algorithms are the best choice for solving this hard problem. In this paper, contrary to prior ways, the new string representation has been used, communication costs has not been ignored and presents as a major factor for reaching to optimum solution