拉丁立方的计数与合痕分类

对拉丁方的概念进行推广，把构成拉丁方的二维矩阵提升到三维，引入了拉丁立方及相关概念；并给出了进行拉丁立方的计数与合痕分类的算法；利用此算法，得出１至５阶规范拉丁立方的数目及其合痕类类数。     

特征数法拉丁方代表元计数

在转换合痕的基础上，提出拉丁方合痕不变量－特征数的概念，进而提出一种判别拉丁方合痕代表元的算法－特征数法，同时局部合痕的概念，侠拉丁方合痕代表代表元判别现时大大加速。     

8n阶最佳幻立方的快速构造方法

前言在文[1]中,作者引入全对称拉丁方的概念,并且用2个正交的6m+3阶全对称拉丁方构成6m+3阶全对称幻方。本文将拉丁方的概念推广到三维,并且用三个正交的8阶三维全对称拉丁方构造8阶最佳幻立方,再用8阶等值最佳幻立方砌块构成8n阶最佳幻立方。本文所得到的6族8阶最佳幻立方,也是目前能构成的最低阶的最佳幻立方。     

（4,k）—拉丁阵（k≤11）的合痕分类

研究了一种基于组合性质的拉丁阵合痕类代表元的生成算法。该法克服了回溯法当阶数较大时在实现过程中时间上难以承受的困难，利用该算法得到了（４，ｋ）－拉丁阵（其中１≤ｋ≤１１）的合痕类代表元，完成了这些拉丁阵集的合痕分类。     

(4,k)-拉丁阵(k≤11)的合痕分类

研究了一种基于组合性质的拉丁阵合痕类代表元的生成算法．该算法克服了回溯法当阶数较大时在实现过程中时间上难以承受的困难．利用该算法得到了（４,ｋ）－拉丁阵（其中１≤ｋ≤１１）的合痕类代表元,完成了这些拉丁阵集的合痕分类．     

特征数法拉丁方代表元计数

在置换合痕的基础上 ,提出拉丁方合痕不变量—特征数的概念 ,进而提出一种判别拉丁方合痕代表元的算法—特征数法 ,同时提出局部合痕的概念 ,使拉丁方合痕代表元判别问题在实现时大大加速     

奇N阶三重正交拉丁立方构造方法的论证

给出了三重正交拉丁立方的定义。提出了三重正交拉丁立方的构造方法 ,并进行了这一构造方法的证明。阐明了奇 n阶三重正交拉丁方构造过程 ,介绍了 1 1阶三重正交拉丁立方及幻立方的构造结果及三重正交拉丁方的具体应用。     

生成拉丁阵合痕类代表元的一种快速算法

根据拉丁阵自身组合学方面的性质及其在算法设计时的特点,给出了一种对拉丁阵进行合痕分类快速而有效的算法,该算法在一定程度上克服了求类问题时随着阶数的增加,所需运行时间急剧膨胀的问题,并在Ｐｅｎｔｉｕｍ２００机上以有限的时间成功地得到了（４,ｋ）－拉丁阵（ｋ＝１,２,…,１５）与（５,ｋ）拉丁阵（ｋ＝１,２,３）的所有合痕类代表元,这对拉丁阵密码设计而言是非常有意义的。     

n=t3阶正交拉丁方的构造方法

在三重正交拉丁立方构造研究的基础上,发现了一种适用于n=t3阶正交拉丁方构造的方法.并利用其方法构造n=8,27,64,125,343,512,…等阶的正交拉丁方.阐明了n=t3阶正交拉丁方构造的特点,介绍了n=t3阶正交拉丁方的构造方法及n=8,27阶欧拉方和幻方的构造结果.     

13阶三重正交拉丁立方及其构造

介绍了奇 n阶三重正交拉丁立方的构造方法 ,并利用所述的方法构造出 1 3阶三重正交拉丁立方。对 1 3阶三重拉丁立方的性质进行了分析 ,讨论了 1 3阶三重拉丁立方的应用     

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