perfect differential
1.A novel architecture charge pump circuit is proposed, in which the current follow technology is used to make a perfect current matching characteristics,two differential inverters are add to increase CP speed.
2.By the absolute coordinate method , the handle to the constrain equations of the system is fairly simpler , but a number of governing equation of the system is most . In addition , the numerical methods solved DAE aren’t perfect like the initial value problem of pure differential equations , and its intrinsic ill-condition can lead to many difficulties in the numerical calculation .
3.Viewed goaf gas as no-glutinosity compressible gas, and the goaf gas flow as adiabatic flow at the perfect gas state, based on the continuous equation, movement differential equation, energy equation, finally got the velocity of shock gas which was produced by the instantaneous fall large area roof in goaf, and the frictional resistance that shock gas bearing when it flowing in the entry.
4.APN(almost perfect nonlinear)function has universal application in cryptography,and the main use of APN function is to construct the S-box in DES for its small differential uniformity.
5.For instance, DCL ( differential competitive learning) algorithm can draw fuzzy control rule from input and output data. But to the system that inputs and outputs sample knowledge lack or do not perfect, DCL algorithm be unable to help.
6.User custom blocks of differential space-time block codes(DSTBC)were designed in SPW on the basis of introducing the principle of DSTBC,and the performance of DSTBC on flat Rayleigh fading channel was simulated in SPW and compared with STBC with perfect channel estimates under same channel conditions.
7.Based on the idea, design high order differentiator (HOD) that is well able to extract differential and high order differentials of measured signals, the HOD has preferable ability for resisting high frequency interferential signal, and is provided with perfect precision, the proposed HOD has a few parameters and is easily adjusted.

