椭圆系边值问题

椭圆型偏微分方程组的边值问题在数学、物理学中有许多应用，本书是关于这个主题的专著，主要目的是应用伪微分算子和矩阵多项式的谱理论中的新方法将指标理论简化和代数化。指标理论为有效应用椭圆型和边值算子的主象征提供了重要工具，     

关于Wiman—Valiron理论

在本文中利用Ｍａｃｉｎｔｙｒｅ的一个简化方法，证明了Ｗｉｍａｎ－Ｖａｌｉｒｏｎ理论吕一个定量的新形式，给出它对于线微分方程和代数微分方程的一些应用。     

一类非线性泛函微分方程边值问题的数值解法

研究带有边值问题的非线性泛函微分方程的数值求解,基于Adomian分解法,我们应用了同伦摄动法,它把非线性微分方程转化为一系列的线性微分方程.应用泛函分析理论、简化的再生核方法求解线性微分方程,它避免了复杂的施密特正交化过程,节省大量时间.数值例子说明我们的算法简单,有效,精度高.     

关于Wiman－Valiron理论

在本文中利用Ｍａｃｉｎｔｙｒｅ的一个简化方法，证明了Ｗｉｍａｎ－Ｖａｌｉｒｏｎ理论中一个定理的新形式，并给出它对于线性微分方程和代数微分方程的一些应用．     

高阶非线性代数微分方程组的可允许解

利用亚纯函数的Nevanlinna值分布理论和微分方程的研究技巧,研究了一类高阶代数微分方程组的亚纯解,并微分方程组的亚纯解或同为允许的,或同为非允许的.推广和改进了一些结论.     

高阶非线性复微分方程组的亚纯允许解

利用亚纯函数的Nevanlinna值分布理论和微分方程的研究技巧,研究了一类高阶代数微分方程组的亚纯解,并且微分方程组的亚纯解或同为允许的,或同为非允许的.推广和改进了一些结论.     

关于Calabi-Yau簇形变微分方程的计算

Lauder用Dwork的形变理论研究了某些特殊形状的代数簇的zeta函数的计算,其基本想法是:先计算某个特殊纤维上的zeta函数,再通过形变理论计算在这个点附近的其它纤维的zeta函数.其中,形变规律是由一个微分方程来反映的,但是如何写出微分方程并非易事.作者对形如FΓ＝xn1 … xnn nΓx1…xn的Calabi-Yau簇给出了一个求其微分方程的简单算法.     

一种简化汽车模型设计的优化方法

以控制理论及汽车运动六个方向的微分方程为基础，建立汽车仿真模型。通过对与之相对应的特征值进行最优分析：计算表示特征值重要程度的参数Mk及Sk、计算去掉相应特征值后在输出端所产生的误差Dk；另外还要计算表示特征值与状态变量之间关系的参数Pik，从而确定最优特征值及重要状态变量，以达到简化汽车模型的目的。     

三维Minkowski空间中的仿射平移曲面

利用不变量理论及微分方程理论等研究了Minkowski空间中的特殊曲面,通过变换化偏微分方程为常微分方程,简化求解过程,给出了一些分类.在伪正交标架下,研究了仿射平移Weingarten曲面.首先,根据微分几何中的基本知识,得到了该种度量形式下的平移曲面的第一、第二基本形式以及高斯曲率和平均曲率;然后,主要利用高斯曲率和平均曲率之间的线性关系和平方关系,得到了这类平移曲面的分类定理.     

一类高阶偏微分方程解的渐近理论

研究了一类具有初值问题的半线性高阶偏微分方程解的渐近理论,在Sobolev空间中建立了高阶偏微分方程渐近近似解的长时间合理性.     

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.     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

正~~     

Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to