一类OF图及其泛连通性

设Ｇ为ｎ阶连通图，且对Ｇ中任一对距离为２的顶点ｕ、ｖ，有ｄ（ｕ）＋ｄ（ｖ）≥ｎ，则称Ｇ为ＯＦ图．本文讨论了ＯＦ图的泛连通性，主要得到下列结果：设Ｇ为ｎ阶ＯＦ图，则Ｇ为下列三类图之一：（１）Ｇ是［５ｎ］－泛连通图（２）Ｈ＋；（３）Ｋｍ＃Ｋｎ－ｍ＋２及其部分支撑子图，其中３≤ｍ≤ｎ－１，｜Ｖ（Ｈ）｜＝．     

图的路连通问题

如果图Ｇ的每对不同顶点ｕ和ｖ之间都有哈密顿路相连，则称Ｇ是哈密顿连通的；而如果对于所有满足条件以ｄ（ｕ，ｖ）≤ｑ≤ｎ－１的整数ｑ，ｕ和ｖ之间有长为ｑ路相连，则和Ｇ是泛连通的，其中以ｄ（ｕ，ｖ）是ｕ和ｖ间的距离，而ｎ是Ｇ的顶点数。本文证明了下述两个结果：（１）２ｋ＋１个顶点的ｋ正则简单图是哈密顿连通的，（２）ｋ连通国中任何两顶点之间存在ｋ－１条长度不同的路；进而如果Ｇ的顶点数小于２ｋ，则Ｇ是泛连通的。     

关于Faudree－Schelp定理的改进

一个图Ｃ＝（Ｖ，Ｅ）是［ｌ，ｍ］－泛连通的，如果在Ｇ的任意一对节点ｘ与ｙ之间有长为Ｋ—１的路Ｐｋ（ｘ，ｙ），Ｋ＝ｌ，ｌ＋ｌ，…，ｍ。Ｇ具有性质Ｐ（Ｋ），如果对Ｇ的任何一对距离为２的节点ｘ和ｙ，有ｄ（ｘ）＋ｄ（ｙ）≥Ｋ。作者探讨了一类产（Ｋ）图的路连通性，改进了Ｆａｕｄｒｅｅ－Ｓｃｈｅｌｐ定理，得到两个定理：定理１设Ｇ＝（Ｖ，Ｅ）是ｎ阶Ｐ（ｎ—１）图。如果Ｇ是［ｎ—１，ｎ］－泛连通的，则Ｇ是［８，ｎ］－泛连通图（ｎ≥８）．定理２设Ｇ是３－连通ｎ阶Ｐ（ｎ）图。如果Ｇ的独立数α（Ｇ）＜ｎ／２，则Ｇ是［５，ｎ］－泛连通图，ｎ≥５．     

点泛圈偶图

设Ｇ是连通偶图，（Ｘ１，Ｘ２）是其顶点的二分类，｜Ｘ１｜＝｜Ｘ２｜＝ｎ，δ（Ｇ）≥ｔ≥３，且对于Ｘｉ中的任意两点ｕ和ｖ，均有｜Ｎ（ｕ）∪Ｎ（ｖ）｜≥ｎ－（ｔ－２），ｉ＝１，２，文中对ｔ≤６的情况，证明Ｇ是点泛圈偶图。     

Hamilton图的一个充分条件

本文证明了如下结果：Ｇ是简单图满足条件：对Ｇ中任一对不相邻顶点，ｕ，ｖ有ｍａｘ（ｄ（ｕ），ｄ（ｖ））＋／Ｎ（ｕ）∪Ｎ（ｖ）／≥ｎ－１；且对任意Ｔ∈Ｖ（Ｇ），有ω（Ｇ／Ｔ）≤／Ｔ／，则Ｇ是Ｈａｍｉｌｔｏｎ图。     

关于“k——序哈密尔顿图”一文的一点注记

本注记改正文［１］中一个引理的一点错误及引理证明中的失误。重新证明了若ｎ阶图Ｇ的任二不相邻顶点ｕ、ｖ有ｄ（ｕ）＋ｄ（ｖ）≥ｎ＋２ｋ－７，４≤ｋ≤ｎ，则对于Ｇ的任意不同的ｋ个顶点ｖ１，ｖ２，…，ｖｋ，有ｖ１（ｘ１）ｖ２（ｘ２）…ｖｋ－１（ｘｋ－１）ｖｋ型ｖ１—ｖｋ路（我们用ｖｉ（ｘｉ）ｖｉ＋１表示ｖｉｖｉ＋１或ｖｉｘｉｖｉ＋１。）或ｖｋｖ１（ｘ１）…（ｘｋ－２）ｖｋ－１型ｖｋ—ｖｋ－１路；若对任不相邻两顶点ｕ、ｖ有ｄ（ｕ）＋ｄ（ｖ）≥ｎ，则对于Ｇ中任三点ｖ１，ｖ２，ｖ３存在ｖ１（ｘ１）ｖ２（ｘ２）ｖ３型ｖ１—ｖ３路。最后对文［１］中的公开问题１提出自己的看法。     

图中含有k－因子的一个充分性条件

设ｋ是一不小于３的整数，Ｇ是连通图，具顶点数ｎ≥７ｋ－７，ｋｎ是偶数，且Ｇ的最小度δ（Ｇ）≥ｋ。本文证明了：若对Ｇ中任意一对不相邻的顶点ｕ、ｖ均有２ｎ－１≤ｄ（ｕ）＋ｄ（ｖ）十２｜（ｕ）ＵＮ（Ｖ）Ｄ，则Ｇ有ｋ一因子。     

领域并与点泛圈偶图

设Ｇ是连通偶图，（Ｘ１，Ｘ２）是其顶点的二分类，│Ｘ１│＝│Ｘ２│＝ｎ，δ（Ｇ）≥ｔ≥３。证明了若任意ｕ，ｖ∈Ｘｉ→│Ｎ（ｕ）∪Ｎ（ｖ）│≥ｎ－〔ｔ－１／２〕，ｉ＝１，２，则Ｇ是点泛圈图。     

Hamilton连通图的一个新的充分条件

设Ｇ是ｎ阶３－连通无向简单图，α表示图的独立数．若对Ｇ的所有距离为２的顶点ｕ，ｖ，都有ｄ（ｕ）＋ｄ（ｖ）≥ｎ或｜Ｎ（ｕ）∩Ｎ（ｖ）｜≥α，则Ｇ是Ｈａｍｉｌｔｏｎ连通的，除非Ｇ属于一个特殊图类．     

点泛圈偶图的一个充分条件

设Ｇ是连通偶图,（Ｘ１,Ｘ２）是其顶点的二分类,｜Ｘ１｜＝｜Ｘ２｜＝ｎ,δ（Ｇ）≥ｔ≥３。证明了若任意ｕ,ｖ∈Ｘｉ蕴含｜Ｎ（ｕ）∪Ｎ（ｖ）｜≥ｎ－（ｔ－２）,ｉ＝１,２,则当ｔ＝７时Ｇ是点泛圈偶图。     

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.     

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.     

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。     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

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

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