序

Suppose G is a finite group, then QG is a semisimple Q-algera, obviously ZG is a Z-order of QG,we denote the maximal Z-order by ?.If G is not abelian, it is not an easy thing to determine г; if G is an abelian group, then QG is isomorphic to the direct sum of a finite number of number fields, and r is the direct sum of these rings of algebraic integers of those number fields, but which elements of QG belong to r is not clear.

设G是一个有限群，那么QG是一个半单代数，ZG是QG的一个Z-序，设Γ是QG的一个极大Z-序，当G是一个非交换群时，Γ的求解是困难的问题；当G是一个交换群时，QG同构于有限多个数域的直和，Γ相应的就是各数域代数整数环的直和，但Γ具体是QG中那些元素不清楚。

In this paper, using directed acyclic graph to represent the partial order constraints between these tasks in the system, a model of real time system is established with task attributes. a schedulability test algorithm for these tasks in the system is presented based on a series of theoretical analyses without preemption.

使用有向循环图来描述任务间的偏序关系，在以任务属性为参数的实时系统模型基础上，通过理论分析了在非抢占的条件下，这类系统中非周期任务和与之成偏序关系的严周期任务间的可调度性判定方法。

First, we introduce and discuss the various methods of multivariate polynomial interpolation in the literature. Based on this study, we state multivariate Lagrange interpolation over again from algebraic geometry viewpoint:Given different interpolation nodes A1,A2 .....,An in the affine n-dimensional space Kn, and accordingly function values fi(i = 1,..., m), the question is how to find a polynomial p K[x1, x2,...,xn] satisfying the interpolation conditions:where X=(x1,X2,....,xn). Similarly with univariate problem, we have provedTheorem If the monomial ordering is given, a minimal ordering polynomial satisfying conditions (1) is uniquely exsisted.Such a polynomial can be computed by the Lagrange-Hermite interpolation algorithm introduced in chapter 2. Another statement for Lagrange interpolation problem is:Given monomials 1 ,2 ,.....,m from low degree to high one with respect to the ordering, some arbitrary values fi(i= 1,..., m), find a polynomial p, such thatIf there uniquely exists such an interpolation polynomial p{X, the interpolation problem is called properly posed.

文中首先对现有的多元多项式插值方法作了一个介绍和评述，在此基础上我们从代数几何观点重新讨论了多元Lagrange插值问题：给定n维仿射空间K~n中两两互异的点A_1，A_2，…，A_m，在结点A_i处给定函数值f_i(i=1，…，m)，构造多项式p∈K[X_1，X_2，…，X_n]，满足Lagrange插值条件：p=f_i，i=1，…，m (1)其中X=(X_1，X_2，…，X_n)，与一元情形相似地，本文证明了定理满足插值条件(1)的多项式存在，并且按"序"最低的多项式是唯一的，上述多项式可利用第二章介绍的Lagrange-Hermite插值算法求出，Lagrange插值另一种描述是：按序从低到高给定单项式ω_1，ω_2，…，ω_m，对任意给定的f_1，f_2，…，f_m，构造多项式p，满足插值条件：p=sum from i=1 to m=Ai=f_i，i=1，…，m (2)如果插值多项式p存在且唯一，则称插值问题适定。

Partial ordered set is an algebraic structure. It is of great practical significance to study the relation between the order and various applied sciences, such as computer science, management science and social science.

偏序集是一个拓代数结构，建立序与计算机科学、管理科学及社会科学中各种不同的应用的联系，其研究具有重要的实际意义。

This is obviously influenced by the base level up and down changings, pore space variation and sediment alimentation. Through analysing the relationship between the course of base level up and down cycles of high resolution sequence strata and the reservoir physical behavior, six heterogeneity models of diff...

通过高分辨率层序地层的短期基准面升、降旋回过程与储集物性关系的分析，建立了6种不同沉积微相的非均质性模式，探讨了向上变深、向上变浅的非对称型和向上变深后复变浅的对称型短期基准面旋回层序对储层非均质性特征的控制作用

6 The 3rd-order sequence have been identified in early Cretaceous, the position of sequence is erected on 2 sets andesite.

3将下白垩统划分为6个三级层序，指出本区两层安山岩的层序位置。

A preorder that is antisymmetric is a partial order .

满足反对称性的预序关系称为偏序关系。

Based on the twelve-sequence component method a location algorithm for four-parallel lines is introduced which is independent of source impedance, fault type, fault resistance and mutual coupling between four-parallel lines.

大量的EMTP仿真结果表明十二序分量法的精确性及各项图表的正确性。本文使用12序分量法对同杆四回线进行故障测距，提出了基于反序电流的同杆四回线的故障测距方法，该方法具有极高的测距精度。

Accounting for the characteristics of Chinese inland basins, Chinese geoscientists have developed a set of laws that controls oil reservoirs and hydrocarbon enrichments, and worked out a workflow of sequence stratigraphy study for inland basin.

针对中国陆相盆地层序地层的特点，国内学者提出了陆相盆地&三面&(断层面，最大湖泛面，不整合面)控藏规律及构造坡折带油气富集规律的层序地层学观点，并在生产实践中总结出层序地层学研究的工业流程，得到了较好的应用效果。

The matching of successions and the establishing of strata sequence formwork had provided significant condition through the understand of the sequence distribution.

通过对该地区层序划分的认识，为该地区的层序对比和层序地层格架的建立等，提供了重要的依据。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。