Abstract:We study the multigrid method for the Zienkiewicz finite element approximation of biharmonic equation. The h-independent convergence is proved,and the error estimate of optimal order between the multigrid nested iteration solution and the exact solution o

Abstract:By introducing Clifford cross-ration, we have given in this paper a suffiecent and necessary condition for that a homomorphism of R~n to R~n is a orientationperserving Mobius transtormation. It is proved that the real part of Clifford cross-ration is an i

Abstract:In this paper, the affect of the aerodynamic side force in automobile aerodynamics on the property such as the dynamic characteristic, the economy of fuel oil and the steering stability of automobile is discussed. The mathematical model for the correspond

Abstract:There usually are leakage and heat-transferring together in an actual Stirling thermodynamic cycle path. Researchers in this field only noticed leakage amount itself, but paid no attention to the effects of leakage and heat-transferring to thermodynamic p

Abstract:In this paper, the author proved the partial regularity of the generalized solutions of the super critical growth elliptic system. Furthermore, the everywhere regularity of generalized solutions of three special systems are obtained.

Abstract:This paper deals with the global convergence problem of DFP method for unconstrained optimization problems. For the case of Armijo line searches,we prove the global convergence property of DFP method used for the minimization problem of strickly quadratic

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Abstract:Based on the demisyllableas the recognition primitive(unit), in this paper, a 3-stage recognition structure is presented. It combines the pattern matching method based on speech production model with the feature rule method based on"knowledge", and permit

Abstract:The corrosion inhibition effect of benzothiazole and its derivatives on dezincification of brass has been studied in simulated cooling water by weight loss, atomic adsorption spectrum and electrochemical technique. The relationship between moleculal struc

Abstract:Spectrophotometric determination of trace zirconium with the O-NPF and PHOMAC are studied. The new method of spectrophtometric determination of Zr has been established. It can be applied to the direct determination of trace Zr in minerals.

Abstract:In this paper, axisymmetric heat conduction and heat stress problems with three types of boundary conditions are analysed by the Boundary Element Method. The temperature and thermal stress fields for the piston of a diesel engine are calculated using tria

Abstract:HP AWJM is a new cutting technology developed on WJM in the early 1980's. With its development, a practical method has been provided for cutting the material with high strength and high hardness. In this paper, the equipment and its principle, testing res

Abstract:The mecaism of wear and tear of Austenitic Manganese steel by solid particles is discussed in this paper. A kind of Austenitic Manganese steel with carbon 1.65% which is applicable under the low stress condition has been deve-loped. The tests of wear and

Abstract:New method for designing high-order OTA-C filters is presented. The technique is based on the nodal voltage simulations and uses passive LC ladder network as prototype. The method is suitable for not only the active simulation of lowpass ladder filter but

Abstract:This paper presented a metnod of self-determining PID parameters by using system idenification and gave a engineering sample.

Abstract:Based on a content of paper[1-3],authors study all-round and discuss in detail the simplifying thinking of wu zhendong formula. This paper puts forword some principles for simplifying wu zhendong's theory formula,analyses variance law of all terms exponen

Abstract:An automatic polarization measure system can be made up of a commercial potentiostat and a computer. This paper described a corresponding analog interface circuit and a software consisting of the controlling,sampling and fitting programs with which the da

Abstract:In this paper the coagulants of the coagulation treatment of leather industry synthetic sewage were reasonably chosen. The optimum conditions of the coagulation treatment were determined by economic analysis. The goal of reducing medicament cost was attai

Abstract:By utilizing the 1/N expansion technique(ONET), the analytical expressions of energy spectrum, deformation parameter and reduced matrix elements of E2 transition given from a consistent Q framwork in the sd interacting boson model are compared with the re

Abstract:High quality electrode paste produced ty improving general production technique and special treating raw material was introduced. The new paste has higher strength, good anti-thermal shock property, good sintering property, lower uint consumption, and les