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Construction of Transgenic Crop Germplasm Effective Function and Characteristic Analysis
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作者 DING Guangzhou WANG Xiaowei 《Journal of Northeast Agricultural University(English Edition)》 CAS 2008年第2期68-75,共8页
Germplasm effect reflects the quantitative relation between production ability of germplasm elements and yield (quality) of a certain crop, which can be shown by mathematic function, namely, germplasm effect functio... Germplasm effect reflects the quantitative relation between production ability of germplasm elements and yield (quality) of a certain crop, which can be shown by mathematic function, namely, germplasm effect function. Germplasm effect of a crop variety is an aggregation of many effective factors, and is restrained by different effective factors; constant increase of any one effect of germplasm elements would lead to law of effect decline, therefore, possible modes of transgenic crops effect function were deduced according to the law of effect decline. The possible modes of single transgenic germplasm effect function and multi-transgenic germplasm effect regression equation were discussed, and the characteristics of germplasm effect regression equation were analyzed in this paper. 展开更多
关键词 transgenic crops germplasm effect function mode and characteristic germplasm operation
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REFERENCE FUNCTIONAL AND CHARACTERISTIC SPACE FOR LAGRANGE AND BERNSTEIN OPERATORS
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作者 S.De Marchi M.Morandi Cecchi 《Analysis in Theory and Applications》 1995年第4期6-14,共9页
This paper deals with the description and the representation of polynomials defined over n-simplices, The polynomials are computed by using two recurrent schemes: the Neville-Aitken one for the Lagrange interpolating ... This paper deals with the description and the representation of polynomials defined over n-simplices, The polynomials are computed by using two recurrent schemes: the Neville-Aitken one for the Lagrange interpolating operator and the De Casteljau one for the Bernstein-Bezier approximating operator. Both schemes fall intothe framework of transformations of the form where the F iare given numbers (forexample, at the initial step they coincide with the values of the function on a given lattice), and the coefficients (x) are linear polynomials valued in x and x is fixed. A general theory for such sequence of transformations can be found in [2] where it is also proved that these tranformations are completely characterized in term of a linear functional, reference functional. This functional is associated with a linear space., characteristic space.The concepts of reference functionals and characteristic spaces will be used and we shall prove the existence of a characteristic space for the reference functional: associated with these operators. 展开更多
关键词 REFERENCE functionAL and characteristic SPACE FOR LAGRANGE and BERNSTEIN OPERATORS
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