AutoCAD的填充图形分析

填充图剖面符号是机械制图、建筑制图中实体剖视图必不可少的材料标识。填充图剖面符号形状的差别表示着实体材料的种类，其填充的效果直接影响到图形的质量。针对填充图剖面符号的建立及填充时经常遇到一些问题，进行了分析并加以延伸、扩展，得出了解决问题的具体方案。     

基于矢量的建筑工程图中墙体符号的自动识别

分析了基于矢量的建筑工程图中墙体符号的几何特征，实现了建筑工程图中基本图元的自动数字化存储，提出了一种高效的基于矢量图形的墙体符号自动识别算法，并给出了算法的应用实例．     

CASS5.0在矿图数字化中的应用及分析

为了适应煤矿信息化管理的要求,将模拟矿图进行扫描矢量化制作成数字地图,针对矿图图幅长短不一、比例尺较小、符号较多等特点,应用CASS5．0数字测图软件进行矿图的纠正和矢量化,并进行了部分符号的二次开发,解决了在矿图数字化过程中所遇到的问题,使数字化图件完全满足相关图例和精度要求。     

CAD在绘制矿图过程中的应用

针对采矿矿图种类繁多、内容多变、重复性强的特点，对AutoCAD的底层机制进行研究，利用计算机程序语言VB，建立了矿图图元的计算机绘制模型，使其能够添加到所需要绘制的采矿图中，并且能够自动完成文字标注和图形旋转、缩放。此方法与采矿线型库结合，可完成复杂的采矿矿图的全部绘制工作，为在实践中推广采矿计算机辅助设计奠定了基础。     

对矿图中线性符号编程的研究

利用CAD能直接调用的Lisp语言,开发出线性符号的通用绘制程序,解决了微机绘制矿图中线性符号的问题。     

开拓系统图自动绘制方法的研究

本文根据正轴侧投影原理，建立了三维矿图绘制的数学模型．并提出了解决三维图形隐藏线的消除及阴影线填充的处理方法。     

矿井井巷工程可视化数据管理系统研究

确立了矿井井巷工程巷道数据管理系统(RDMS)研制的基本目标，根据工程实践建立起采掘工程平面图专用图素集，研究构造了工程平面图形的组织与管理模式。利用AutoCAD2000 VBA二次开发技术，将矿图中的巷道、工作面等图形元素与它们的相关数据信息链接起来，建立起井巷工程RDMS系统，为实现矿井井巷信息的可视化管理提供保证。     

基于ActiveX技术的矿井RDMS的研制

借用现代数据挖掘技术，结合矿山开采工程实际，建立起一套以采掘工程平面图专用图素集为示范的构造图形组织与管理模式。利用VBA与ActiveX相结合的二次开发技术，将矿图中的巷道、工作面等图形元素与它们的相关数据信息结合起来，研制出井巷工程RDMS系统，为实现矿井开采应用层面的井巷信息的可视化管理提供技术支持。     

科技论文写作规范·三·——图·表·式

1 图 1.1 图要精选,具有自明性,切忌与表及文字叙述重复。 1.2 图要精心设计和绘制,要大小适中,线条均匀,主辅线分明。图中文字与符号必须与文稿相一致。图形应该用硫酸纸和墨色描绘,还必须在原稿的相应部位绘出同样的图形。     

一类带号图构形的Tutte多项式

研究了带号曲轮图和带号双半轮图对应图构形的Tutte多项式,主要用带号图的删除-限制定理来计算其Tutte多项式,并运用带号图的符号转换函数找到了几种有规律的基本图形（基图）,推导出这些基本图形Tutte多项式的递推公式后,通过计算机辅助给出这类带号图的Tutte多项式,进而得到特征多项式及OS代数的维数。最后计算了半螺旋双吸泵3种不同内部结构的Tutte多项式。     

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.     

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.     

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.     

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.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

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.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-