In this paper,we made some theoretical analysis of effective length of radiant heat transfer based on the zone method of three dimensional radiant heat transfer problem in the furnace.

Based on the systematic optimisation, a new method for determiningstorage siding number and effective length of herringbone tracks isobtained.

The stress field,saturated stress,stress transfer efficiency and effective length in carbon nanotubes(CNTs) reinforced polymer composites were analyzed based on the three-phase concentric cylindrical shell model along with shear-lag arguments.

Based on the correlation analyses of such petrophysical properties as density,magnetic susceptibility,remnant magnetization,electrical resistivity,and chargeability for 3 000 samples from Hebei Province,the authors carried out a study on effective combinations of geophysical methods and found that geological survey with specific aim needs specific combination of geophysical methods.

From a new angle, this article studies inter-relations,rules of variation,algorithm and new expressing method of combination proportion, variance and ratio of profit cf the effective combination,mean and variance.

The sufficient and necessary condition for existing efficient portfolio is obtained,and also the analytic solutions of efficient portfolio and efficient frontier is derived,which generalize successfully the classic Markowitz model and are helpful to investigate portfolio efficient subset further.

At the present there exist three methods accepted to do the portfolio management, which are fundamental analysis, technological analysis and the modern portfolio analysis, we used the three different ways together in this dissertation to do the efficient portfolio management.