保守转强阵Q的Q-过程与生灭转强阵Q-过程的求法

本文首先研究保守的转强阵的一些分析理论,进而讨论一类特殊的马尔可夫过程——生灭转强阵Q-过程的一种求法.     

柯氏向后微分方程组解的适定性

用泛函分析的理论和方法研究马尔可夫过程中生灭Q-矩阵的性质,证明在一定条件下生灭Q-矩阵生成一个线性算子C0半群,即此生灭Q-矩阵是某个C0半群的无穷小生成元.从而证明了生灭过程理论中的柯氏向后微分方程组解的存在性、唯一性和稳定性.     

基于拟生灭理论的服务人员优化配置模型

针对目前服务人员优化配置的研究大部分只是定性分析的情况,本文利用拟生灭排队理论,建立了某公司客户需求多变而员工服务水平不同一情况下的人力资源配置模型并进行了仿真实验。实验结果表明,该模型能有效的提高服务效率。     

P2P网络节点随机行为对文件规模的影响

基于随机过程理论建立文件共享P2P网络模型,利用该模型系统地分析节点下载、合作、欺骗以及加入/退出等多种动态行为对文件规模及相关的平均负载率、下载成功率、平均下载次数等性能的影响.得出文件规模对下载率和退出率较敏感,存在平稳极限分布;合作率显著影响平均负载率,而欺骗率严重影响下载成功率及平均下载次数.以上结论可作为相应系统调控机制的优化目标及评价参考.该模型为进一步研究P2P系统性能提供一种简单有效的理论方法.     

两种电脑维修制的效率比较

考虑安徽省普通高考网上评卷现场的电脑维修问题,就一组电脑配备单个维修人员和多个维修人员两种情形,在假定相继发生的事件间的间隔时间服从指数分布的条件下,从等待维修的电脑的期望台数和空闲的维修人员的期望个数两个方面得出后一种情形下电脑得到了更有效的维修.     

元态理论初步

建立了粒子的“刹那生灭”的并且具有“自再现”功能的“元态模型”和“元态群模型”，给出了运动的“生灭位移”解释，揭示了能量的实在涵义，揭示了德布罗意波的频率的实在涵义．     

It?游程理论下生灭过程的构造

不唯一且附加态正则情形的生灭过程的轨道结构异常复杂,利用It?游程理论研究了此类生灭过程的具体构造,回避了传统的"分析"方法.     

It游程理论下生灭过程的构造

不唯一且附加态正则情形的生灭过程的轨道结构异常复杂,利用It游程理论研究了此类生灭过程的具体构造,回避了传统的＂分析＂方法.     

双边生灭过程的轨道结构与Motoo理论

主要研究双边生灭过程的轨道结构和构造理论中的生灭过程与Motoo理论之间的对应关系,并且说明了构造理论中各个参数的概率含义.     

卡西米尔算子,自由费米子和推广的孤立子系列方程

给出了一个同一级Ｋ的两个Ｋａｃ－Ｍｏｏｄｙ代数Ｇ＇、Ｇ＂耦合的代数Ｇ的卡西米尔算子．利用Ｋａｃ－Ｍｏｏｄｙ代数的Ｆｒｅｎｋｅｌ－Ｋａｃ表示，得到了推广的非线性薛定格方程系列．引入了自由费米子产生－湮灭算符，讨论了一类修正的ＫＰ系列．     

非对易相空间中的二维带电谐振子能级

在弦的尺度下出现的非对易空间效应，引起了量子力学中物理量的一系列变化，这在物理学中具有重要意义．该文的重点是用对易空间谐振子的产生-湮灭算符表示出非对易相空间中的二维带电谐振子的哈密顿量，进而讨论其能级．     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.