双重Q^2重标度模型重标度参数经验公式的一个检验

用双重Q^2重标度模型重标度参数经验公式给出的钨核的重标度参数值,计算了钨核与氘核的Drell-Yan过程微分散射截面之比,结果表明理论计算与实验符合较好,从而对重标度经验公式进行了检验。     

双重Q~2重标度模型重标度参数经验公式的一个检验

用双重 Q2 重标度模型重标度参数经验公式给出的钨核的重标度参数值 ,计算了钨核与氘核的Drell-Yan过程微分散射截面之比 ,结果表明理论计算与实验符合较好 ,从而对重标度经验公式进行了检验     

色八重态对协同J/ψ+γ产生过程的影响

利用双重Q^2－重标度模型给出的胶子分布函数计算并讨论了重夸克偶素的色八重态对协同J／ψ＋γ产生过程的影响。结果表明：色八重态的贡献不可以忽略，有时能超过色单态的贡献。所得计算结果与未来实验数据的比较，可以对双重Q^2－重标度模型进行检验。     

钙核与钙核碰撞的K因子

在高能核碰撞Drell Yan过程考虑湮灭项和康普顿散射项的基础上 ,利用双重Q2 重标度模型 ,计算了钙核与钙核的碰撞。结果表明 ,对于不同的x1值 ,K因子随x2 的变化很不相同 ,它不能近似地作为常数。计算结果与实验对照可以检验所用核效应的模型及QCD理论     

混合重标度模型、实光子产生和核Drell－Yan过程

利用混合重标度模型，解释ＥｕｒｏｐｅａｎＭｕｏｎＣｏｌｌａｂｏｒａｔｉｏｎ（ＥＭＣ）效应的主要特征．计算了大Ｐｒ实光子产生的截面比．讨论了核Ｄｒｅｌｌ－Ｙａｎ过程．     

混合重标度模型,实光子产一和核Drell—Yan过程

利用混合重标度模型，解释Ｅｕｒｏｐｅａｎ Ｍｕｏｎ Ｃｏｌｌａｂｏｒａｔｉｏｎ效应的主要特征。计算了大ＰＴ实光子产生的截面比。讨论了核Ｄｒｅｌｌ－Ｙａｎ过程。     

偏好依附随机网络模型

本文研究加点、加边、重连和去边四种演化过程的随机网络模型.对偏好依附随机网络模型,利用连续理论证明了如果适当选取模型参数,这个网络模型为无标度网络模型;并给出了标度指数γ的值.     

关于标准映象的一个逼近映象

考虑了一个函数ｆ（θ）＝θｃｏｓπθ构成的二维映象，用Ｇｒｅｅｎｅ发展的对标准映象的最后ＫＡＭ曲线的准确数值方法．计算出了从局部混沌到整体混沌的的临界参数值，同时也计算出了周期点处的余数和标度因子等．余数呈现周期３收敛，标度律也具有周期三标度．这与标准映象的余数的收敛和标度律的标度有所不同，但从标度因子的角度来看所考虑的二维映象却能很好地逼近标准映象．     

核Drell—Yan过程的混合重标度模型

利用混合重标度模型计算铁核与氘核的Ｄｒｅｌｌ－Ｙａｎ截面比随ｘＦ的变化，计算结果与实验符合较好。     

核Drell-Yan过程和混合重标度模型

利用混合重标度模型计算铁核与氘核的Ｄｒｅｌ－Ｙａｎ截面比随ｘＦ的变化，计算结果与实验符合较好     

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