交换Banach代数上线性系统的干扰解耦

研究了交换Ｂａｎａｃｈ代数Ｗ上线性系统的干扰解耦问题，给出了其被状态反馈解耦的充要条件，即矩阵Ｅ＝「Ｅ１ Ｅ２…Ｅｐ」＾Ｔ非奇异，讨论了其在Ｇｅｌｆａｎｄ变换下与对应的有限维线性系统可解耦性之间的关系，即Ｗ上的线性系统（Ａ，Ｂ，Ｃ）被状态反馈解耦等价于对所有ψ∈Ｘ，线性系统均被状态反馈解耦，且ｄｉ（ψ）＝ｌｉ（常数），ｉ＝１，…ｐ，ψ∈Ｘ。     

部分取代苯定量结构-生物降解相关性(QSBR)研究

采用Ｃｈｅｍｓ３Ｄ中量子化学ＭＯＰＡＣ－ＡＭ１法计算了７种间苯胺类和８地苯酚的分子量高占有轨道能ＥＨＯＭＯ、分子最低空轨道能ＥＬＵＭＯ。用ＱＳＡＲ程序软件包查得分子体积Ｖｍ。结合分子连接性指数（＾３Ｘ,＾３Ｘ＾ｖ）对生物降解二级速率常数对数ｌｇＫｂ进行定量结构－生物降解相关性（ＱＳＢＲ）分析,通过回归分析,得到如下两个回归方程：ｌｇＫｂ＝－０．８３２－０．１１８Ｖｍ＋１．７４８＾３Ｘ＾ｖ,ｎ＝１５,Ｒ＾２＝０．８３２,ＳＥ＝０．５７７,Ｆ＝２９．７,ｐ＝０．０００。（１）ｌｇＫｂ＝０．１２４Ｖｍ＋１．７４９＾３Ｘ＾ｖ,ｎ＝１５,Ｒ＾２＝０．９９８,ＳＥ＝０．５５９１,Ｆ＝４１４８．９９,ｐ＝０．０００．（２）     

一类无限平面近环的结构

在复数域Ｃ中重新引入新的乘法运算＊φ，将Ｃ加工成一个平面近环（Ｃ，＋，＊φ），证明了：（１）Ａ＝｛ａ∈Ｃ｜ａ＊φｚ＝０＊φｚ｝＝ｋｅｒφ；（２）对于ａ∈Ｃ＊＝Ｃ＼Ａ，令Ｂａ＝｛ｂ∈Ｃ＊｜ｂ＊φ１ａ＝ｂ｝，则Ｃ＝Ａ∪｛Ｂａ｜ａ∈Ｃ＼Ａ｝是Ｃ的一个分划；（３）（Ｂａ，＊φ）是一个群；（４）（Ｃ，Φ）是Ｆｅｒｒｅｒｏ对，其中Φ＝｛φｂ｜ｂ∈Ｂａ｝，φｂ（ｘ）＝｜φ（ｂ）｜１／αｘ，ｘ∈Ｃ     

拟线性椭圆方程在R^N上的结点径向解的存在性

研究了Ｒ＾Ｎ（Ｎ≥２）上的拟线性椭圆方程－ｄｉｖ（｜△↓ｕ｜＾ｐ－２△↓ｕ）＋｜ｕ｜＾ｐ－２ｕ＝ｆ（｜ｘ｜,ｕ）,ｘ∈Ｒ＾Ｎ,ｕ∈Ｗ＾１,ｐ０（Ｒ＾Ｎ）的具任意多个结点的径向解的存在性,其中１〈ｐ〈∞,所得结果推广了Ｂａｒｔｓｃｈ和Ｗｉｌｌｅｍ（１９９３）关于ｐ＝２时的相应结果。     

混合模型及其导出模型下估计量间的关系

考虑混合模型Ａ＝｛ｙ,Ｘβ,Ｕξ,σｅ＾２Ｖ｝和它的三个导出模型,其中Ｘ,Ｕ＝（Ｕ１：…：Ｕｋ）为已知设计阵,β为固定效应向量,ξ’＝（ξ’：…：ξ’ｋ）为随机效应向量,且Ｖ≥０,Ｒ（Ｘ：Ｕ）∈Ｒ（Ｖ）。给出了可估函数Ｃβ在模型Ａ和其导出模型下的最佳线性无偏估计（ＢＬＵＥ）相等的充要条件,σｅ＾２在不同模型下最小范数二无偏估计（ＭＩＮＱＵＥ）相等的充要条件。     

关于矩阵方程∑(from i=1 to n) A_iX_iB_i=F的可解性

本文考虑含有ｎ个未知矩阵Ｘ１,Ｘ２,Ｘ３,…,Ｘｎ的非齐次矩阵方程：Ａ１Ｘ１Ｂ１＋Ａ２Ｘ２Ｂ２＋…＋ＡｎＸｎＢｎ＝Ｆ,（１）其中Ａｉ∈Ｃｍ×ｌｉ,Ｂｉ∈Ｃｐｉ×ｑ,Ｘｉ∈Ｃｌｉ×ｐｉ,Ｆｉ∈Ｃｍ×ｑ．我们先给出一个求解的方法;然后利用矩阵的拉直运算和...     

矩阵字符串的几个等式问题

研究了矩阵Ａ,Ｂ∈Ｃ＾ｎ×ｎ的迹等式,ｔｒ（ＡＢ）＾ｍ＝ｔｒ（ＡＡ）＾ｍ２（ＢＢ）＾ｍ２）（ｍ≥２为自然数）的充要条件,同时给出了２个矩阵,Ａ,Ｂ∈Ｃ＾ｎ×ｎ的字符串Ｗ（Ａ,Ｂ,Ａ＾＊,Ｂ＾＊）的与正规矩阵有关的几个性质。     

配合物Eu（p—ClC6H4COO）3C12H8N2的晶体结构

在乙醇溶液中合成了对氯苯甲酸－邻菲罗啉铕配合物的晶体。用Ｘ－射线衍射方法测定了配合物的单晶结构，其结构式为Ｅｕ２（ｐ－ＣｌＢＡ）６（ｐｈｅｎ０２（ｐ－ＣｌＢＡ；对氯苯甲酸，酸根离子；ｐｈｅｎ：１，１０－邻菲罗啉）。属三斜晶系，ｐｉ空间群，ａ＝１．００５４（２），ｂ＝１．１８５８（３），ｃ＝１，４３４９（７）ｎｍ，α＝１１０．５２（３），＝９６．５２（３），γ＝１０１．９５（２）＾－０，Ｖ＝１．５３     

不相容约束矩阵方程逼近解的表示和Cramer法则

考虑不相容约束矩阵方程ＡＸＢ＝Ｄ,Ｒ（Ｘ）Ｔ,Ｎ（Ｘ）Ｓ其中Ａ∈Ｃｍ×ｎ,Ｂ∈Ｃｐ×ｑ,Ｄ∈Ｃｍ×ｑ,Ｔ,Ｓ分别为Ｃｎ,Ｃｐ的子空间,给出了它的逼近解、最佳逼近解的表示及Ｃｒａｍｅｒ法则．     

关于C0—算子半群的紧扰动

设Ａ是Ｂａｎａｃｈ空间Ｘ中的Ｃ０－算子半群ｅ＾ｔＡ的无究小生成,Ｋ是Ｘ中的有界线性算子,本文证明了Δ（ｔ）＝ｅ＾ｔ（Ａ＋Ｋ）－ｅ＾ｔＡ对ｔ〉０是紧算子当且仅当Δ（ｔ）对ｔ〉０按一致算子拓扑连续且对λ∈ｐ（Ａ）（Ａ的豫解集）,（λ－Ａ）＾－１Ｋ（λ－Ａ）＾－１是紧算子。此外若Ｘ是可分Ｈｉｌｂｅｒｔ空间,则Δ（ｔ）对ｔ〉０按一致算子拓扑连续的条件等价于对τ〉ω（Ａ）（ｅ＾Ａ增长界）,ｌｉｍ│ω│→∞‖     

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)

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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