期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
逆多项式模型用于荷斯坦牛泌乳曲线的研究 被引量:4
1
作者 毕守东 方一平 +1 位作者 刘丽 陈宏权 《安徽农业大学学报》 CAS CSCD 1995年第4期433-436,共4页
利用逆多项式函数对荷斯坦牛的产奶量作了回旧分析。结果表明,1-6胎次母牛的泌乳曲线的拟合精度皆在0.1~3.4%之间,其复相关指数都在0.95以上,由此所估测的48周内总产奶量的平均误差介于-0.61~2.5%之间。
关键词 荷斯坦牛 泌乳曲线 逆多项式模型
下载PDF
A Unified Model of All Generalizations from the Jones Polynomial
2
作者 QIANShang-Wu GUZhi-Yu 《Communications in Theoretical Physics》 SCIE CAS CSCD 2001年第4期431-434,共4页
From the basic properties of skein systems, we build a generalized tangle algebra (GTA). The elements of GTA are four basic tangles. There are three operations, which are connection, splicing and scalar multiplication... From the basic properties of skein systems, we build a generalized tangle algebra (GTA). The elements of GTA are four basic tangles. There are three operations, which are connection, splicing and scalar multiplication. From GTA we derive two generalized recursion formulae (GRF) and prove the existence of a generalized skein relation which satisfies GRF. The obtained generalized skein relation epitomizes all generalizations from the Jones polynomial and thus forms a unified model. Two important topological parameters, twisting measure and loop values, appear explicitly in the expressions of the unified model, and this fact greatly simplifies the operations. 展开更多
关键词 Jones polynomial skein relation tangle algebra recursion formula
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部