Based on the rational cost function and cyclical checking of PUSH and PULL models, it simulates and analyzes the average costs of those systems in different leadtimes, shows the influences on general system costs imposed of different leadtimes.
Combined with engineering characteristics, this paper analyzes the UHV transmission line pole and tower load planning and economical spans to determine rational and economical spans as well as tower height and reduce the project cost.
Quantitative evaluation of structural complexity is the important part of geology guarantee system of modern mine,the purpose is to provide foundation for the rational well patterns designing and mining mode.
Under the dry term in the east of Gansu, The cultivated tests on the fertilizer effect, density and different stages of Qingtian 1 were carried out. The results indicated that applying 105kg/hm2 nitrogen and 75kg/hm2 phosphorus fertilizer is the most economic and rational;
Based on the Black-Scholes option pricing theory and non-cooperative game theory, a deferment option game model of generation investment and transmission investment is developed, which makes the strategies of Powcos’ investment more rational and the electric power network planning more harmonious.
Architects should choose reasonable structural form according to natural theorem and scientific disciplinarian,understand structural bearing pattern,utilize geometrical characteristic,and grasp the integration of structural function and image,so s to create perfect and rational sports architecture.
Finally the cubic surfaces of each component ofQ are studied in details by determining their stabilizers, their rational representations and whether they can be expressed as the determinant of a 3×3 matrix of linear forms.
Rational smoothness and fixed points of torus actions
We obtain a criterion for rational smoothness of an algebraic variety with a torus action, with applications to orbit closures in flag varieties, and to closures of double classes in regular group completions.
to obtain this result, we first prove the above isomorphism for compact nilmanifolds endowed with a rational invariant complex structure.
We also describe the closure of orbits and then give applications to the repartition of rational points on K3 surfaces.