空间数据挖掘的研究与应用

空间数据挖掘就是从空间数据库中抽取隐含的知识、空间关系或是空间数据库中存储的其他的隐含的模式的过程 空间数据挖掘在地理信息系统(GIS)、空间遥感、测绘、资源和环境管理等很多领域有广泛的应用前景 本文对空间数据挖掘的具体应用进行了探讨.     

基于云计算的数据挖掘应用探析

云计算做为一种新兴的网络技术已经在各个领域得到广泛应用,云计算的一个重要作用就是对海量信息数据进行存储与管理,因此云计算为数据挖掘提供了一个良好的平台。本文先对云计算进行简单介绍,然后对基于云计算的数据挖掘应用进行详细阐述与分析,最后介绍基于云计算的数据挖掘应用平台的构建。     

面向商务智能应用的分布式数据挖掘系统设计

在综合分析商务智能分布式应用环境和数据存储环境基础上,提出了一种充分利用移动Agent移动特性并以Agent为主要组件来满足商务智能应用需要的分布式数据挖掘系统模型,讨论了系统中用户接口、数据挖掘组件、企业数据库系统各功能模块特点以及数据挖掘组件中各Agent功能设计.介绍了在Java编程环境下数据挖掘移动Agent和移动Agent服务器内部各组成模块结构功能.该系统具有可扩展性好、结构灵活、系统安全性强等特点,对构建基于Agent技 术的商务智能数据挖掘系统具有一定的参考价值.     

数据挖掘在中国的现状和发展分析

数据挖掘作为人工智能与数据库分析研究的新领域,近些年来,数据挖掘技术理论和应用研究得到了进一步的发展,并引起了国内外研究人士的高度关注。而随着计算机对数据的采集、处理、存储能力的不断提高,数据量也在不断增加,传统数据分析工具难以满足现如今的数据处理需求,数据挖掘技术在这种形势下诞生了。中国科研人员对数据挖掘进行几年的研究,并在理论研究与实际应用方面获得了一定的成绩,但是相关数据挖掘技术成功的应用还是偏少。笔者从阐述数据挖掘技术的相关概念入手,分析了数据挖掘在我国的研究现状,并探讨了数据挖掘在我国未来的发展方向。     

基于RBF神经网络的超市客户保持预测模型研究

利用RBF神经网络数据挖掘算法建立了超市客户保持预测模型,在MATLAB开发环境下进行程序设计和仿真分析,并与BP算法进行对比,完成了超市客户保持预测的任务,分析了该算法的优越性.     

基于GIS与数据挖掘关联规则的超市内部布局优化分析与设计

超市作为传统零售业与城市发展的象征,在互联网大潮的冲击下节节败退,原因在于多数超市有着复杂的内部结构,使人们望而却步。然而随着GIS技术的飞速发展,GIS技术在社会生活各方面的作用日益凸显,超市内部布局的不合理有了解决的契机。本文综合了数据挖掘关联规则方法与GIS空间分析技术,以信阳沃尔玛超市为例进行分析,探讨出对超市内部布局分析的量化方法,并结合实际案例进行优化设计,为更多的超市管理者提供直观的超市设计方法,以实现超市服务的优化与收益的扩大。     

基于Web的可视化数据挖掘工具综述

在互联网存储的信息中,对于含有有效信息的数据挖掘工作具有极高的价值,而数据可视化工具又为挖掘工作以及对于信息的分析提供了更直观方便的方法.文章介绍了数据挖掘、数据可视化、Web挖掘的基本概念、基本方法及流行技术;比较了常见的可视化数据挖掘工具,并且对数据挖掘技术的发展做出了适当的展望.     

基于健康档案数据仓库的数据挖掘技术

健康档案数据仓库的存储模型支持数据共享与交换、数据挖掘与分析.使用数据挖掘技术可以在海量的信息数据仓库中提取隐含的、潜在的、有价值的数据进行分析.利用Microsoft决策树算法的线性回归算法对数据进行慢性病诱因的数据挖掘具有重要的参考价值.     

客户关系管理中数据挖掘技术的应用研究

以客户为中心已经成为各个企业的共识,而其实现的前提是从海量的客户信息中发现客户新的需求,必须对信息进行分析,从中得到企业的决策支持信息.数据挖掘技术应用于这一领域可以帮助企业更好地分析和处理客户数据,挖掘客户对企业的最大价值,建立与客户之间的关系,提升企业竞争力.阐述客户关系管理的概念、数据挖掘含义及数据挖掘的一般流程.给出了数据挖掘在CRM中的实施模型,详细论述了数据挖掘在CRM中的应用.最后提出了在客户关系管理中实施数据挖掘应注意的问题.     

数据挖掘技术在信用卡分析中的应用

数据挖掘是目前一种新的重要的研究领域,其在银行中的应用已成为一个重要的趋势.本文首先介绍了数据挖掘的概念、功能、数据挖掘过程.然后重点介绍了数据挖掘在信用卡分析中的应用.最后对数据挖掘在信用卡分析领域应用进行展望.     

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。     

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.     

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.