算术运算式波兰式、逆波兰式的转换

算术运算式可以表示成中序式、波兰式和逆波兰式，而在编译过程中一般采用波兰式或逆波兰式。就算术运算式转换成波兰式和逆波兰式的问题，给出了利用栈来实现的C语言算法。     

从单糖的Fischer式改写成Haworth式的讨论

本讨论了从单糖的Fischer式改写成Haworth式的步骤。给出了正确书写Haworth式的简便方法。     

西周金文的连动式和兼语式

以西周金文为研究对象 ,分析金文的连动式 ,从动词结构之间的语义关系分为表示先后连续发生的动作、表示目的、表示方式等三种类型 ,还分析金文的三重连动式实际上是表面的三连动 ;金文的兼语式的三种结构类型 ,从语义上看 ,其第一项动词全部是使令类 ;另外还分析连动式和兼语式混合套用的复杂谓语 ;试图从连动式和兼语式这一语法现象使西周金文与商代甲骨文的相衔接。     

隐喻式和一致式的认知研究

隐喻式和一致式是语法隐喻理论中的两个重要概念。系统功能语言学认为,语法隐喻发生在语法层面,是表达相同意义的语法范畴发生了转换。从认知的角度看,语法隐喻反映了经验的重新建构,是人类认识世界的重要机制。隐喻式有助于我们对语篇既定意义的有效识解,有利于认知效果的获得。许多隐喻式相当于认知语言学的原型理论中的＂非范畴化＂动词,而一致式则相当于原型的最佳代表。     

急切式和懒惰式学习策略相结合的决策树分类模型

急切式学习策略和懒惰式学习策略有着不同的学习和分类机制.通过分析急切式学习策略下的普通决策树模型和懒惰式学习策略下的懒惰式决策树模型,提出了一种新的决策树分类模型即Semi-LDtree.它生成的决策树的结点,如普通决策树一样,包含单变量分裂,但是叶子结点相当于一个懒惰式决策树分类器.这种分类模型保留了普通决策树良好的可解释性,实验结果表明它提高了分类速度和分类精确度,特别是在大的数据集合上效果更加明显.     

推导四力矩式,五力矩式和六力矩式

本文用较简单的方法推导空间任意力系平衡方程的另外三种形式；四力矩式、五力矩式和六力矩式。     

延迟式AGC与非延迟式AGC的性能比较

通过理论推导证明：非延迟式ＡＧＣ压缩参谋 恢复忆少的能力强于延迟式ＡＧＣ，但反调制失真较为理；而延迟式ＡＧＣ的过渡过程短于非延迟式ＡＧＣ，且反调制失真较小；两者抑制干扰脉冲的能力相同。     

内燃式热风炉升级改造浅谈

本文分析了目前我国热风炉发展的现状:顶燃式热风炉发展迅速,但内燃式热风炉仍数量众多。通过分析传统内燃式热风炉的缺陷及顶燃式热风炉相应的优点,提出了将内燃式热风炉改造为顶燃式热风炉的大体思路,并介绍了某工程内燃式热风炉改造的实例。内燃式热风炉改造为顶燃式热风炉是未来发展的趋势。     

议论摘取式与播种式拣货的异同

本文简述电子标签拣货的两种方式摘取式和播种式拣货的定义以及电子标签拣货的适用范围，重点介绍了摘取式和播种式拣货的异同点，总结了电子标签拣货的优点。     

试论摘取式与播种式拣货的异同

本文简述电子标签拣货的两种方式摘取式和播种式拣货的定义以及电子标签拣货的适用范围,重点介绍了摘取式和播种式拣货的异同点,总结了电子标签拣货的优点。     

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