The system mainly consists of the ultrasonic emitting and receiving unit,ARM controlling unit,LON-RS232 communication unit,the management unit and the upper computer and then has the merits such as stable operation convenient use,high precision(±0.1 mm),higher ratio of performance to price etc.
A new algorithm,chaos higher efficient genetic algorithm(CHEGA),is proposed for the forecast of the sediment concentration in reservoir,in which initial population is generated by chaos algorithm and new chaos mutation operation is used.
The operation adj on matrices arises from the (n - 1)st exterior power functor on modules; the analogous factorization question for matrix constructions arising from other functors is raised, as are several other questions.
The operation number of the stable doubleLR algorithm for normative matrices is only four sevenths of the rationalQR algorithm for real symmetric tridiagonal matrices.
Two-operation homomorphic perfect sharing schemes over rings
Two-operation homomorphic sharing schemes were introduced by Frankel and Desmedt.
They have proved that if the set of keys is a Boolean algebra or a finite field, then there does not exist a two-operation homomorphic sharing scheme.