基于KML的GIS数据复用技术研究

随着GIS和CAD技术的飞速发展,积累了大量的空间数据信息.然而,由于不同的GIS软件,其数据格式各不相同,因而无法实现数据在不同GIS软件间的直接共享和复用.基于上述背景,针对目前在市面上较为流行的AutoCAD和Google Earth两个GIS应用软件,在深入地分析GIS数据在其中的存储机制的基础上,探讨了GIS数据的解析方法,以KML语言为基础,结合ObjectARX和XML技术,提出了一种GIS数据的无缝转换技术,从而实现了平台间数据共享,极大地提高了GIS系统的开发效率.     

CASS 在城镇数字地籍数据库建设中的应用

CASS地形地籍成图软件是基于AutoCAD平台技术的数字化测绘数据采集系统,而城镇地籍管理系统普遍采用GIS平台进行处理空间矢量化数据,另外地形、地籍属性数据均需要无损导入GIS平台.本文以某市1:500城镇地籍数据库建设,浅析地籍数据库建设中利用CASS软件进行数据采集的方法,为同行提供参考.     

面向实体的数据采集

数据采集是长期以来困扰地理信息系统（GIS）发展的“瓶颈”问题,在简要阐述CIS对数据来集的要求后,着重论述了利用AutoCAD12．0软件制定的一系列规则和采用的一些处理方法．     

基于ArcInfo的CAD数据到GIS数据转换初探

以一幅1:2 000烟台市AutoCAD地形图数据为例,简单介绍了CAD数据到GIS数据转换的一般步骤,重点探讨了AML语言在GIS数据转换中的作用.     

Android下的移动GIS离线编辑系统

随着嵌入式备计算能力的提高、移动定位技术与移动通信技术的快速发展,利用移动GIS进行和位置相关的数据采集成为移动GIS的一个重要应用方向。本文主要实现的是在Android系统的移动设备上进行野外数据采集和图形的编辑,针对传统的移动数据采集方式中存在的采集数据精度和效率低以及现有的移动数据采集系统偏重于空间位置测量和缺乏通用性和数据编辑的重要性等问题,提出并开发了基于Android移动GIS和GPS技术的数据采集与编辑系统,把GIS、GPS与GPRS等技术相结合应用到移动GIS数据采集业务中。     

CAD数据到GIS数据自动转换方法探讨

分析了现有CAD数据与GIS数据转换的研究成果,在分析AutoCAD与ArcGIS数据特点的基础上,提出并设计了基于规则库的CAD数据到GIS数据转换方法,并基于该方法开发应用程序,通过在实际数据生产中的应用分析,该方法的优点是可避免数据转换过程的信息丢失和建立完整要素关系,并可通过规则库实现转换过程及质量的可控制性。     

基于FME的CAD与GIS数据转换研究

CAD格式数据与GIS格式数据转换问题，—直是GIS技术发展中核心的问题之一。该文从典型的CAD软件CASS和GIS软件AreGIS的研究入手，实现了基于FME的CASS向AreGIS数据的无损转换。     

利用AutoCAD VBA和Excel实现测量数据处理自动化

AutoCAD和Excel软件在工程测量中的应用比较普及,利用AutoCAD VBA的编程能实现将CAD中的数据转换到Excel中以及将Excel中的数据转换成CAD图形,使测量工作变得快捷轻松,本文为测量工作者提供了一个编程的思路。     

规则库支持下的CAD数据到GIS数据自动转换方法探讨

论文分析了现有CAD数据与GIS数据转换的研究成果，在分析AutoCAD与ArcGIS数据特点的基础上，提出并设计了基于规则库的CAD数据到GIS数据转换方法，并基于该方法开发应用程序，通过在实际数据生产中的应用分析，该方法的优点是可避免数据转换过程的信息丢失和建立完整要素关系，并可通过规则库实现转换过程及质量的可控制性。     

CAD到ArcGIS数据转换问题

为将以AutoCAD格式存在的测量基础数据转换成GIS数据,从理论和实践两方面进行了研究。通过AO+VB进行开发设计数据转换程序。最终实现了AutoCAD环境下的大比例尺地形图数据向ArcGIS数据格式的无信息损失转换,降低了地理信息系统开发过程中数据采集的费用。     

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.     

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.     

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.     

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.