地质地学数据模型及数据融合技术探究

以地学数据为基础,主要描述了其基本概念、数据来源以及主要特征,针对地学数据模型的建立进行相关讨论。地学数据模型在类型上可以分为矢量数据和栅格数据两种模型。以地学数据模型为基础,探讨数据融合技术的主要特点,并研究其运用于地学数据中的方法。     

运用多维数据模型实现数据集市

文中阐述了数据集市、多维数据模型的基本概念和技术 ,探讨了一种用多维数据模型实现数据集市的方法。最后 ,给出了一个数据集市的应用实例     

基于GIS的空间数据集成方法研究

回顾了早期的两种数据模型,介绍了面向实体的数据模型和拓扑关系数据模型的优、缺点,在此基础上总结了GIS多源数据产生的原因和集成发展的迫切性、介绍了三种多源数据集成模型和GIS数据模型的发展方向,提出了一种从CAD数据到GIS数据的转换方法和分析了在转换过程中存在的问题以及解决的思路.     

地学数据模型及数据融合技术

描述了地学数据的基本概念、主要数据来源以及地学数据的主要特征，讨论了地学数据模型的建立过程．地学数据模型主要分为矢量数据和栅格数据2种模型,而矢量数据模型主要由点要素、线要素和面要素组成．此外，针对地学数据模型，探讨了数据融合技术的特点和它在地学数据中常用的方法．数据的融合主要表现在互补信息和协同信息的融合、熵结构下的融合以及多源遥感数据的融合3个方面．在地学数据融合处理中使用的方法有图像处理，专家系统，地质统计学与多元统计，人工神经网络等．     

平行数据模型

从介绍平行数据模型的优点入手，着重描述了平行数据模型的设定，指出了平行数据模型的特点，概括了平行数据基本模型的估计方法，最后介绍了平行数据模型的最新发展。     

矿山地理信息数据模型研究

矿山数据模型研究,是"数字矿山"的核心组成部分,是矿山地理信息系统研究的热点和重点.笔者就矿山地理数据特点,从数据采集、数据表达等方面探讨了矿山地理信息系统(简称MGIS)所涉及的关键技术,在面向对象数据模型基础上建立了面向对象的矿山地理信息系统的数据模型,并以点、线实体阐述了矿山实体几何和属性对象数据模型的组成,为矿山地理信息系统的计算机实现建立了理论基础.     

面向值和面向对象集成的数据模型

面向值和面向对象数据模型的集成是当前数据库领域一个活跃的研究方向。文章为演绎面向对象数据库提出了一个面向对象的形式化数据模型——ＯＤＭ，它在同一数据模型中把面向值的数据和面向对象的数据有机地统一起来     

EPICENTRE数据模型应用研究

论述了石油勘探开发集成中心数据模型EPICENTRE的构筑原理和方法 ,论述了模型的应用技术 ,包括领域数据向模型的映射以及实体数据通过模型向数据仓的加载和模型控制下的数据存取等 ,并给出了应用实例。实际应用表明 ,EPICENTRE数据模型可使石油勘探开发数据资源得到充分利用。     

静态与动态面板数据模型及其应用

面板数据也称时间序列截面数据或混合数据,它是将截面数据和时间序列数据融合在一起的一种新的数据类型.本文介绍了静态面板数据模型与动态面板数据模型的一般形式、常用的参数估计方法以及在计量经济方面的应用.     

数据仓库中两种数据模型的分析比较

指出了数据决策支持系统是当今数据库领域的研究热点，而数据仓库和联机分析处理是该领域中的2个重大的技术，数据模型又是数据仓库的核心和基础，在数据仓库中，常用的数据模型是立方体数据模型和星型数据模型，在分析比较这2种数据模型优、缺点的基础上，提出了组织数据仓库中的数据时应灵活选择模型，做到优势互补，扬长避，以调离同高性能的商业决策支持系统。     

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.