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1)  Profit and Loss Index
盈亏指数
1.
According to the development of the fruit tree nutrition technology and the nutrition character of the Dangshansu pear tree, this paper brings forward the combination nutrition diagnosis method based on the Diagnosis and Recommendation Integrated System (DRIS) and the Profit and Loss Index (PLI).
本文根据果树营养诊断技术的发展和砀山酥梨树体营养特点,提出基于营养综合诊断与盈亏指数结合的方法对酥梨进行营养诊断。
2)  Parameters of potassium gain and loss
钾盈亏参数
3)  Data in balance between profit and loss
盈亏平衡数据
4)  defect index
亏指数
1.
In this paper,several lemmas in [3] are improved,the method used in [2]and [3] is generalized,the complete description of all the possibility of self-adjoint area is given,and the limitation on the equal condition of defect index at the both ends in text [4] is reduced,thus making the analytic description of selfadjoint differential operators at the both strange ends solved completely.
关于对称微分算子在最大算子域内界定自伴域的边界条件问题,去掉了两端亏指数相等的限制条件,给出线性流形为自伴扩张域的充分必要条件,从而使两端奇异的自伴微分算子的解析描述得到完满解决。
2.
In this paper,the largest defect index of the singular Hamilton differential expression is investigated.
讨论了奇异Hamilton微分系统的最大亏指数,主要结果是对Weyl H,Atkinson F V给出的最大亏指数定理相应结果的改进与推广。
3.
For a semi-bounded operator with defect index (1, 1 ), we solve von Neumann s problem in a explicit way based on Krein s formula and rank one perturbation theory of a positive selfadjoint operator, only assuming the Friedrichs extension is obtained.
对亏指数(1,1)的下半有界闭对称算子的von Neumann问题,作者利用实参数形式的Krein公式和自伴正算子的秩1扰动理论给出了一个仅依赖于Friedrichs延拓的显式解答,并且证明了对每个这类算子,在它的全体自伴延拓集合到单位圆周S~1的一个自然的双射下,它的von Neumann问题解集的像一定处于1/4单位圆周内。
5)  deficiency index
亏指数
1.
Some fourth order ordinary differential expressions are decomposed into the products of two second order ordinary differential expressions,when L has a positive belower bound,the deficiency index of L is the sum of the deficiency indices of the two second order differential expressions.
将形如 L =(py″)″-(qy′)′的微分算式分解为两个二阶微分算式的乘积 ,在 L有正的下界的条件下 ,L的亏指数即是上述两个微分算式的亏指数之和 。
2.
In the last three decades,many authors have considered the deficiency index of Jsymmetric differential operators,and have o.
利用分析方法研究了具有可积系数的2n阶非对称微分算子,得到几类极限点型的非对称微分算子(J-对称微分算子),同时也给出了这几类J-对称微分算子的亏指数。
3.
and obtain following results if the deficiency index of a Jsymmetric vectorvalued operator is finite,then Jselfadjoint extensions exist,and the boundary conditions of vectorvalued Jselfajoint operators are given.
在考虑自伴算子的延拓问题时,由于亏子空间是由k+=ker(A*-iI)和k-=ker(A*+iI)组成,通过研究k+与k-间的关系,可直接得到对称算子A的自伴延拓B的定义域的维数dimD(B)=d(A),其中d(A)表示A的亏指数〔9〕。
6)  deficiency indices
亏指数
1.
The integrable-square solutions about a class of ordinary differential equation,which is associated with the differential operator of middle deficiency indices,are considered by using the general theory of deficiency indices for ordinary differential operators and product operators.
运用微分算子及乘积算子亏指数的一般理论 ,考虑了一类具有中间亏指数的常微分算子所对应的微分方程的线性无关平方可积解。
2.
In this paper, by using a new method of self-adjoint demains for symmetricoperators in Hilbert spaces, we give the analytic descriptions of all selfadjoint extensions ofsymmtric differential operators with conutably infinite deficiency indices in direct sum spaces.
应用Hilbert空间内对称算子自伴域一种新的描述方法,得到直和空间内亏指数为可数无穷的对称微分算子自伴扩张的完全解析描述。
3.
The first part of this paper gives a sufficient and necessary condition of the relationship between the deficiency indices d(M) of even order(2n) singular real symmetric regular ordinary differential operator M and the well-posedness of a kind of ordinary differential equations P_m with original value conditions ,that.
第一部分给出了高阶(2n阶)奇异实对称微分算子M的亏指数d(M)与一类带初值条件的方程P_m解的存在唯一性之间的一个充要关系,即d(M)≤m的充要条件是问题P_m的解存在且唯一,其中(n≤m≤2n),等号成立当且仅当M为极限点型。
补充资料:迁移效率指数、偏好指数和差别指数


迁移效率指数、偏好指数和差别指数


迁移效率指数、偏好指数和差别指数迁移效率指数是用于测定两地间人口迁移效率的指标。它是净迁移对总迁移之比。计算公式为:EIM一摇寿纂拼又‘。。上式中,}人么夕一材方}为i、]两地净迁移人数;从少+材户为i、]两地总迁移人数;El入了为迁移效率指数。 EIM的取值范围为。至100,如某一地区的值越大,反映迁移的的影响也越大。如果计算i地区与其他一切地区之间的人口迁移效率指数EIM厂,则: }艺材。一芝Mj、}EIM汀艺。+乏M,(j笋i) 迁移偏好指数是从一个地区向另一地区的实际迁移人数与期望迁移人数之比。计算公式为:____M.___材尸2行一:一二子一一不石一二,么M“ 了厂‘.厂‘、八 }二不十二六二1 、厂厂7上式中,M“为从i地迁到j地的实际迁移量;艺材。为总的人口迁移量;尸为总人口;M尸I,j为迁移偏好指数。通过计算迁移偏好指数,可以反映各地区的相对引力。 迁移差别指数是反映具有某种特征的迁移人口与非迁移人口区别的指数。例如,专业技术人员的人数所占比重,各种文化程度人数所占比重等,以便研究人才流失和其他间题。计算公式为:M‘从IMD、一翌不丝xl。。 .义V‘ N上式中,M为迁移人数;M,为具有i特征的迁移人数;N为非迁移人数;N‘为具有i特征的非迁移人数;了八了D、为迁移差别指数。
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