1—坚韧Hamilton图的充分条件

设n≥3阶1—坚韧图,若对于G中任意导出爪K(1．3)或变爪K(1．3)＋e上的三点u,v,w,且d（u,v）＝d（u,w）＝2,均满足｜N（u）∩N（v）｜≥-α－1或｜N（u）∩N（w）｜≥α－1,则G是Hamilton图。     

λ_4-最优图的一个充分条件

文章给出了λ4-最优图的一个充分条件.设G是阶为n≥11的λ4-连通图,若对G中任意一对不相邻顶点u,v,有｜N（u）∩N（v）｜≥6且G｜N（u）∩N（v）｜至少包含16条边,则G是λ4-最优的.     

图的λ_6-最优性的领域交条件

文章给出了满足一定条件的图的λ6-最优性的领域交条件.设图G是连通图,若对G中任意一对不相邻顶点u,v,都有｜N（u）∩N（v）｜≥10且｜X5｜≤5,则G是λ6-最优的;若对于连通图G中任意一对不相邻顶点u,v,都有｜N（u）∩N（v）｜≥10且对图中每个三角形T至少存在一个顶点v∈V（T）使得d（v）≥v2＋5,则G是λ6-最优的.     

哈密尔顿性和部分平方图的独立集

设G是一个图,G的部分平方图G^＊满足V（G^＊）=V（G）,E（G^＊）=E（G）∪{uv：uv∈E（G）,且J（u,v）≠φ},这里J（u,v）={w∈N（u）∩N（v）,N（w）（∈）N[u]∪N[v]}.本文利用插点方法,给出了关于k,或（k＋1）-连通（k≥2）图G是哈密尔顿的,1-哈密尔顿的或哈密尔顿连通的统一证明.其充分条件是在图G中关于^k∑i=1｜N（Yi）｜＋b｜N（y0）｜与n（Y）的不等式,这里Y是图G的部分平方图G^＊的任一独立集,对于i∈{1,2,…,k},Yi={yi,yi-1,…,yi-（b-1）}（∈ ）Y（yj的下标将取模k）;b是一个整数,且0＜b＜k＋1;n（Y）=｜{v∈V（G）,dist（v,Y）≤2}｜.     

λ_4-最优二部图的领域交条件

文章给出了二部图是λ4-最优的一个领域交条件.设n为一个不小于8的正整数,令G=（X∪Y,E）为一个n阶二部图且ξ4（G）≤n/2.若G有一个饱和X或Y中所有顶点的匹配且对任意的u,v∈X和u,v∈Y都有｜N（u）∩N（v）｜≥4,则G是λ4-最优的.     

图的λ4-最优性的邻域交条件

文章给出了图的λ4-最优性的邻域交条件.设图G是阶至少为34的λ4-连通图,若对G中任意一对不相邻顶点u,v,都有｜N（u）∩N（v）｜≥6且ξ4（G）≤3n（G）/2＋3,则G是λ4-最优的;若对于λ4-连通图G中任意一对不相邻顶点u,v,都有｜N（u）∩N（v）｜≥6且对图中每个三角形T至少存在一个顶点v∈V（T）...     

涉及距离的n-因子-临界图的一个充分条件

证明了如下结论：设G是p阶连通图，其中p≡n（mod2）且n＜p，如果对满足条件d（u,v）＝2的任意点集{u,v}包含于V（G），有d(u) d(v)≥p n-1，则G是n－因子－临界图。     

泛圈图的一个充分条件

在文[1]中给出定理,设G是一个n-阶2-连通图且δ（G）≥t,若对于G的任意两个不相邻的点u和v,均有｜N（u）∪N（v）｜≥n-t成立,则G是一个泛圈图或G≌Kn/2,n/2.本文的目的在于将此定理的条件减弱,只对图中距离为2的点进行讨论,得出了泛圈图的一个充分条件.文中主要用数学归纳法对定理进行证明,先在引理中给出了几种特殊情况的证明,接着在定理的证明中讨论了一般情形.     

Essential Independent Condition for Graphs to Be Hamiltonian

Let G be a graph of order n．For graph to be Hamiltonian,beginning with Dirac’s classic result in １９５２,Dirac’s theorem was followed by that of Ore in１９６０．In１９８４,Fan generalized Dirac’s theorem and Ore’s theorem as if G is a２-connected graph of order n and max｛d（u）,d（v）｝≥n/２for each pair of vertices u and v with d（u,v）＝２,then G is hamiltonian．In１９９１,Faudree et al proved that if G is a２-connected graph and,| N（u）∪N（v）|＋δ（G）≥n for each pair of nonadjacent vertices u,v∈V（G）,then G is hamiltonian．This paper generalizes the above onditions of Dirac,Ore,Fan and Faudree et al in the case of３-connected graph and proves that if G is a３-connected graph of order n and max｛｜N（x）∪ N（y）｜＋d（u）,｜N（w）∪N（z）｜＋d（v）｝≥n for every choice of６Essential independent vertices,then G is hamiltonian．     

Hamiltion图的一个充分条件

证明如下结果：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包含V（G），有ω（G\)≤｜T｜，则G是Hamilton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.     

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.     

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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