面向对象技术在采矿CAD软件开发中的应用

以矿井交岔点ＣＡＤ软件的开发为例，阐述如何利用面向对象思想对采矿ＣＡＤ软件开发进行系统分析和设计，从而为采矿ＣＡＤ软件的开发提出了一个新的思路和方法，以提高软件的设计和质量。     

采矿CAD中的基本图素集研究

基本图素集是采矿ＣＡＤ中的一项关键技术。本文综合运用ＣＡＤ技术、计算机图形学，结合传统采矿工程设计的特点，提出了采矿ＣＡＤ系统的基本图素集构造原则及基本因素集。对基本图素集中每种因素的描述方法、组织方式、适应性等进行了全面的讨论。     

采矿CAD层次模型及对象分析

对煤炭行业的采矿ＣＡＤ应用和开发现状进行了研究和分析。提出了采矿ＣＡＤ的层次模型，及其对象树和复合对象的构成和部分对象的属性，并对对象树管理器基本功能作了初步的探讨。     

形位公差图样标注的计算机辅助设计

基于图形的ＣＡＤ与数控的ＣＡＤ，以及两者之间衔接过程ＣＡＰ实现方面的研究思想，采用ＡｕｔｏＬＩＳＰ开发语言，在ＡｕｔｏＣＡＤ环境中，开发了国标形位公差的自动标注以及形位公差数据库的维护等功能，有效地实现了机械零件设计中国标形位公差１４类２５种形式的自动标注，该系统界面友好，使用方便。     

矿井设计CAD中的采矿图素库

在汉化的ＡｕｔｏＣＡＤ系统基础上,用计算机绘制采矿工程图是一条方便而有效的途径。探讨井田开拓和采区巷道布置图的程序化和智能化问题,是矿井设计ＣＡＤ的难点和重点。用建立采矿因素库的方法可以较好的解决这个问题,目前研制的矿井设计ＣＡＤ系统已在现场应用。并在教学实践中推进了采矿工程学科的教学方法和课程设置改革。     

关于工科专业图形课程计算机辅助教学软件的探讨

根据目前高校对计算机辅助教学软件的需要，针对工精力产形类教学的特点，提出一个用ＡｕｔｏＣＡＤ作为开发平台设计ＣＡＤ辅助教学系统的实现方案。     

AUTO CAD二次开发方法研究

研究ＡＵＴＯＣＡＤ的二次开发方法，讨论可供用户利用的界面及工具库的设计，提出自动生成形、菜单、汉字的算法及管理方法，并介绍一个二次开发ＡＵＴＯＣＡＤ的基本模型．     

为Auto CAD制作矢量符号的技术

讨论了通过编程控制鼠标器制作矢量字符的原理，在介绍了ＡｕｔｏＣＡＤ形文件的结构后，以对俄文点阵字符矢量化为例。给出了为ＡｕｔｏＣＡＤ加上俄文标注功能的过程。该方法可直接用于制作特殊图符、空心矢量汉字等。     

AutoCAD 形文件自动生成技术的实现

介绍一种在ＡｕｔｏＣＡＤ环境中实现自动生成形文件的方法,其核心思想是由ＡＤＳ＿Ｃ提取所选中屏幕图形的关联码,析取实体数据生成相应的形文件（．ｓｈｐ）,并由应用程序调用编译命令（ｃｏｍｐｉｌｅ）编译形成编译文件（．ｓｈｘ）。所有过程完全在ＡｕｔｏＣＡＤ环境由ＡＤＳ＿Ｃ实现,该方法由ＶｉｓｕａｌＣ＋＋１．５实现。     

雕刻系统中的仿形测试与三维成型技术研究

介绍了作者对雕刻行业ＣＡＴ／ＣＡＤ／ＣＡＭ系统进行研究开发所发取得的部分成果,其中包括浮雕轮廓仿形ＣＡＴ装置的实现,测量数据的筛选与处理方法Ｄｍａｘ浮雕曲面造型算法及数控加工文件的形成等。     

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.     

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     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with