利用数字化仪快速录入采矿工程图件的途径

大量原始图件的录入过程始终影响着采矿工程计算机辅助设计效率的提高 ,从某种程度上制约了采矿工程图件的数字化进程。介绍了提高数字化仪使用效率的要点 ,并结合 Tablet2 0 0 0图件数字化系统的开发 ,探讨了利用数字化仪快速录入采矿工程图件的有效方法 ,以及如何实现参数绘图 ,并给出部分源代码。     

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。     

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。     

水利工程微机辅助设计系统的设计与开发

介绍用Ｃ语言开发的交互式辅助设计与绘图系统ＳＧＣＡＤ；该系统针对水利工程设计特点和常用方法，在微机上采用人－机交互方式连续实现设计、绘图、计算和编辑形成设计说明书。重点讨论屏幕绘图工具－图板式工程图输入编辑系统，论述其主要性能及简化绘图操作的技术措施。     

采矿模型在采矿专业教学中的应用

本论文从采矿工程教学的实际出发,介绍了采矿模型的分类、特点,分析了使用采矿模型的必要性,阐述了采矿模型的教学作用、使用方法和应用实例,指出恰当地使用采矿模型教学,能有效地提高学生的空间想象力、绘图识图能力,能使学生深刻理解采矿学的基本知识、理论和工艺,能有效地提高学生的设计能力和实际操作能力。采矿模型教学是一种非常有用有效的教学手段。     

钢筋混凝土梁配筋图绘图子程序的设计

本文为自动绘制钢筋混凝土梁配筋图提出了绘图系统软件的设计步骤和编制程序的基本思路.这方法同样适用于那些不能直接提供数学模型的工程图样的绘图自动化.同时通过例子简述子影响设计、编制绘图子程序的各种特殊因素.     

电气图素库管理系统

本文介绍了一种适于厂矿电气绘图的图素库管理系统,它包括符号图素、文字图素、块图图素的建立、存取及编辑,系统同时具有图素库管理和绘图两大功能。图3,参2。     

计算机自动绘制技术在采矿工程制图中的应用

在金属矿山的设计和开采过程中，工程图件可以说是其中的交流语言，在采矿工程当中最为常用、最为普遍的图件，依据设计者的意图，与金属矿开采本身的特征进行结合制定出来的任意位置、任意方向的剖面图，能够将开采空间位置、井巷工程、金属矿地质结构、每层结构等有关的因素有效地反映出来。在以前或是现阶段的采矿工程当中在完成这部分工作的时候，使用传统人工绘制的方式，计算工作量相当大，简单及重复的绘图工作量大。特别是复制和保存相当困难。对此，将计算机自动绘制技术应用到其中，为云南省文山州马关县鼎基矿业有限公司矿山工程的有序发展提供一定的帮助。     

工程图学中引入课程设计的改革与实践

为巩固与增强学生对图学基本知识、基本理论的掌握,提高学生的计算机绘图能力,增强其工程意识与创新能力,进行了将课程设计引入到工程图学课程中的改革与实践.提出了工程图学课程设计的三个目标,详细讨论了所选取的零件测绘与计算机绘图两项课程设计内容.提出了在目前工程图学教学体系下,选择计算机绘图软件的原则.最后介绍了课程设计的具体安排与考核.     

工程图学实验教学中学生综合能力的培养

工程图学实验教学是教学中的一个重要环节,如何改革传统的实验教学模式,建立快速提高学生的实践能力、创新意识和创新设计能力的实验模式,是提高教学质量的关键。对工程图学实验内容和方法进行改革,将理论教学与实验教学相结合,手工绘图和计算机绘图融会贯通在一起同步进行,将二维绘图和三维绘图相结合,提高工程图学的教学质量,培养学生的综合能力。     

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.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

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。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.     

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.