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Two aspects of group decision-making (GDM) have received much attention since its appearance, one is the organizing process of GDM which emphasizes in particular on behavioral science and qualitative analysis, and the other is the weight allocation and meta-synthesis of group preference focusing on the quantificational computation. Despite the abundant researches, the existing solutions do not take...
The national information security mainly depends on the security of database. Current database management system provides some security control mechanisms to ensure the data security such as access control and password protection. However, these mechanisms are not sufficient to ensure database security. This research paper presents a pinion-rack encryption/decryption model (P-R model) and its implementation...
Cyclic nucleotide phosphodiesterases (PDEs) share a highly conserved catalytic domain that hydrolyzes cAMP, cGMP, or both nucleotides. However, the mechanism that allows the PDE catalytic sites to specifically recognize these nucleotides and distinguish between their subtle differences is still unclear. An early model, called the “glutamine switch”, proposed that the side chain of an invariant glutamine...
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