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As the developing of hardware and software, computer simulation is becoming an indispensable tool in more and more fields of petroleum industry. Taking the self-diverting acid treatment as an instance, this paper will introduce how to establish the acid model on the base of laboratory study, and how to simulate and evaluate the acid treatment with computer. This method can calculate the real time...
The uncertainty in selection of security assessment parameters heavily affects the accuracy and credibility of the assessment results. The method of selection based on opinion of group experts lacks the ability of describing the uncertainty in the selection procedure, and the method based on interval matrixes does not measure the degree of credibility of the chosen matrix. This paper presents an algorithm...
A non-repudiation protocol aims to provide non-repudiation service. Non-repudiation service, one of the essential security services in computer networks, protects the parties involved in a transaction against the other party denying that a particular event or action took place. Non-repudiation protocols are a special type of fair exchange protocols, and fairness is a key property that must be respected...
A multi-party contract signing (MPCS) protocol allows a set of parties to exchange messages with each other to arrive in a state in which either each of them has a pre-agreed contract text signed by all the others, or none of them does. This paper proposed an improvement on the optimistic MPCS protocol described by Baum-Waidner and Waidner (BW). The number of rounds is reduced to two and the message...
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