The Design and Development of OLAP System for Securities Analysis

To improve the quality of services ,especially the quality of information services is the most important factor which hels securities companies to win the furious competition. Many securities companies can' t use their mass history data very well. The company exists many database environment, so it's very difficult to integrate the different data resources. OLAP technology provides a good resolution for this matter. Through using Data Warehouse , OLAP technology ,theory of DSS and securities analysis, this paper provides a system resolution of securities analysis OLAP system, and through this system to aid management decision and provides better information services for customers.     

Design and Development of Analysis and Forecast System for the Distribution of Car

Analysis and forecast for market have become important methods of making decision in most enterprises. It is the base of analysis and forecast to effectively store and make full use of the data in the distribution. Technology of data warehouse and OLAP provides the strong function of storing and integrating data, and mathematics methods provides a series of statistics and analysis tools. Combine IT and mathematics methods in the field of analysis and forecast for the data of distribution to put forward a design and implementation plan of application system in supporting decision based on data warehouse. The design exhibits the processes how to build data warehouse and multi-dimensional data, recommends the methods of analyzing and forecasting, and shows a good integration of advanced information technology and decision science.     

Development of Technology of DSP Based Mechanical Vibration Data Real-time Ethernet Transmission

In accordance with the requirements of industrial mechanical vibration field data real-time transmission in the condition of multi-survey-point and mass data acquisition, an Ethernet data transmission method based on Ethernet controller RTL8019AS and TMS320C5402 DSP is presented. Packing data from A/D into UDP and IP package and controlling RTL8019AS through I/O mapped registers, high-speed DSP makes real-time communication high performance. Ethernet frame protocol and TCP/IP protocol are simplified for the specific purpose. And the interface technology between Ethernet controller RTL8019AS and DSP is solved. The system evaluation and debugging are made.     

Real-time Infrared Image Acquisitionand Processing System Based on PCI Bus

In the system of infrared imaging acquisition, it is necessary to improve data transfer to satisfy the characteristics of high speed and real time. So,this paper introduces PCI bus and PCI inerface to imaging acquisition. The protocol of data transfer of PCI local bus and the structure of PCI9050 are studied in detail, and the IRFPA data acquisition system are described based on the protocol of data transfer of PCI local bus. The system adopts frame buffer to make slow transmission between peripheral circuit and PCI bus.CPLD is also used as a master of logic time control?     

基于用户需求的多维农业信息分类模型研究

为了帮助用户快速检索到所需农业信息,结合用户对农业信息需求的特征,提出了改进的农业信息多维分类模型,并从信息高效存储和处理的角度提出了基于OLAP的多维农业信息分类模型设计方案,最后以湖南油菜网络信息为例,进行实验数据采集与信息分类,实现多维农业分类信息的存储结构。结果表明：（1）随机采集获得的网络农业信息可以通过改进的多维农业信息分类模型来有效表达;（2）行业维度、时间维度、地域维度、形式维度具有客观性,信息属性维度、产业链维度、信息内容维度具有主观性;（3）某些信息在某些维度上没有数据或者无法确定取值时,用空值表示;（4）知识型信息大部分在时间维度和空间维度上没有数据。多维农业信息分类模型可以从每个维度查看数据,也可以抽取不同维度组合进行数据深度分析,为农业信息个性化推送服务奠定了重要基础。实验中实现了多维农业信息的存储结构,是后续农业信息的数据分析、维度优化等工作的必要前提和基础。     

Relationship between curvature ductility of column and structural displacement ductility for concrete frame structures

Based on the domestic experimental data of multi-storey concrete frame structures, the relationship between curvature ductility of concrete frame column and structural displacement ductility is proposed. 32 sets experimental data of system displacement ductility and the corresponding storey displacement ductility, which are mainly obtained from beam hinge yield mechanism and failure mechanism, are collected, and statistical property of system placement ductility is analyzed. Curvature ductility of concrete frame column is derived from storey displacement ductility factor by the classical analytic solution, and relationship between curvature ductility of frame column and structural displacement ductility is established. Correlation coefficient (R) for fitting power exponent function model and sample test data is 0.775. Results of nonlinear numerical analysis examples show that statistical function model is able to direct the ductility control design of concrete frame column.     

Data Collection Based on Web Services

To construct data warehouse with heterogeneous, self-governing and distributed database system is a challenge. Two problems have to be solved: one is how to collect data from heterogeneous data sources by an effective method, the other is how to clear up and change the format of the data collected from data sources. The opening and the interact-operation property of Web Services is Analyzed. A Data Collection System based on Web Services, which communicates with heterogeneous data sources with SOAP and HTTP, has been designed. A Data Collector is introduced to clear up and to transform data with composition technology. The pivotal XML technology of transforming and loading up the data are discussed.     

Enterprise''s Multi-dimensional Cost Analysis Based on OLAP

With the continuous development of modern scientific management of enterprise, the managers need to study enterprise's cost from all views including product customer department,etc., but there is still not a feasible accounting method to support it. This paper describes an efficient method of developing multi dimensional cost views to support enterprise's multi dimensional cost analysis by incorporating the knowledge activity based on costing and OLAP technology.     

大数据与安全可视化

IT技术的飞速发展开启了大数据时代。海量的数据信息带来更多的数据价值的同时,各类安全问题也随之而来。通过数据可视化技术能够帮助充分全面并且及时地找出系统中可能存在的安全威胁,评估系统安全,保证基础设施的安全。研究从数据角度出发,结合大数据的特征对安全数据进行分类,并对当前已存在的针对不同安全数据进行可视化的工具及技术进行总结,使得能够将已成熟的数据安全可视化技术用于大数据安全的研究,最后对未来的发展趋势进行了展望。     

数据挖掘技术在食品品质研究中的应用

简要介绍了数据挖掘技术的基本原理,并结合食品品质的特性,从营养品质、感官品质、原料生产、加工工艺、贮藏品质、消费习惯等方面,论述了数据挖掘技术在食品品质研究中的应用,旨在为数据挖掘技术与食品品质提高的进一步结合提供参考。     

县域科技工作者状况调查抽样设计与数据分析方法研究——以2007年全国县域科技工作者状况调查为例

抽样设计与数据分析方法选择是问卷调查的核心与关键。2007年全国县域科技工作者状况调查遵循“多层次,等比例”的抽样原则,在全国范围内选取基本样本县203个,基本样本区域内县域科技工作者的抽样总数量为20300人,抽样置信区间控制在95%的水平上。如何从问卷的126个设问,618种答案中分析出影响县域科技工作者状况的主要因素,是本研究要重点探讨的。     

Kinetic mechanism of inorganic scale plugging removal atnear wellbore zone by high power ultrasonic technology

Based on the theory of solid and liquid coupling wave mechanics, the micro-dynamical characteristics caused by the transport of ultrasonic in porous media at near wellbore zone, including the elastic deformation of rock, the elastic crossflow of pore fluid and frame solid, and fluid squirt-flow produced by pore elastic deformation, are analyzed. Analysis of kinetics of peristaltic difference of porosity radius in porous media is presented. The characteristics of the removal of inorganic scale particle in porous media by using ultrasonic technology are also studied. Besides, by applying high power ultrasonic technology, the acoustic energy gathering in porous media at near wellbore zone leading to fracture of part rocks is illustrated. According to these analyses, the micro-dynamical mechanisms, such as inorganic scale fragmentation, ultrasonic cavitations, ultrasonic friction, ultrasonic peristaltic transport and ultrasonic fracture-making, occurred in inorganic scale plugging removal by high power ultrasonic technology are proposed.     

Application of liquid crystal display in the field of dynamic wave display

It is a very important task that using a liquid crystal display module to replace the computer monitor and realizing the dynamic display of wave and data without dithering. The paper describes the way to process sampling data using synchronous technology, to transform data and to find unknowable coordinate. The transforming of address and the drawing of wave and the scrolling of wave are introduced. The dots link up with each other and the wave has no dithering. The dynamic wave and static parameter can coexist. The engineering application shows that the method is effective and economical.     

计算机视觉技术在水稻氮素营养诊断中应用的研究进展

为探究水稻冠层外观特征与水稻氮素营养状况的关系,综述了应用计算机视觉技术进行水稻氮素营养诊断的基本思路及研究进展。主要分述了常规性水稻氮素营养指标的获取,水稻冠层图像的获取、预处理以及特征的提取与优化,水稻氮素营养诊断模型建立的方法等方面的内容。指出近地面水稻冠层图像的获取方法、水稻图像处理方法、多种综合性特征的优化选择方式都有待进一步研究,应用机器学习进行水稻氮素营养诊断建模的方法需要更加深入探究。今后应加大计算机视觉技术在水稻氮素营养诊断相关研究中的应用,将多种图像处理方法、特征优化选择方法与机器学习建模方法相结合,并探寻更为简便易行的方法进行水稻氮素营养诊断。     

Data Exchange Mechanism Matching Target-End Schema Among Heterogeneous Data

XML has become an industry standard for exchanging data between heterogeneous databases. Due to the different schema applied in XML and different databases, the problem of schema transformation has to be resolved. The autrors propose a novel data exchange mechanism binding source-end XML document by using target-end persistent class to deal with the difficulty of implementation and poor flexibility, based on the technology of object/relational mapping and XML data binding. The built XML document is consistent with source-end schema and is easy to be parsed and stored, hence this mechanism can resolve the problem of schema mismatching effectively.     

基于ES的植被景观多样性评价模型研究

介绍植被景观多样性评价模型的设计思想,然后进行构造其专家系统,该系统采用模块化程序设计技术,分为预处理、综合库、知识库、推理机、知识获取及知识管理和总菜单等6个模块,整个系统在主菜单控制下运行,各模块能独立运行。专家系统程序采用雄风专家系统开发平台VisualXF6.1,GIS由Arc/Info系统支撑。最后以永泰县为应用实例进行研究,创建永泰县植被景观多样性评价专家系统,对全县进行植被景观多样性评价,按景观多样性程度由高到低共评价5个等级,2243.4km2,评价结果与实际情况一致。     

Remote Test Method of Relay Protection

Considering the limitation of the field test for relay protection in power system, the paper studies and discusses the remote test method of relay protection in power system. It provides the technology requirements, the technology problems and restricted factors to build the protection test and analysis center. It proposes the method of building the protection test and analysis center. Considering the practice for the transmission of test data, the paper introduces the technology requirements of utilizing dispatching automation system data network to transmit the protection test data. Considering the requirements of microcomputer protection devices for remote test method, the paper presents that there are remote test function and synchronization test function in the field microcomputer protection devices.     

Novel approach for DNA sequence preprocessing with intelligent detection

A novel approach for DNA sequence preprocessing by merging intelligent detection is proposed. This approach can automatically find and locate contaminants using statistical analysis methods, random search and graph-theoretic operations, while no extra background information, such as vector sequence, splice site and clone adapter are needed during preprocessing. Experiments on Zebrafish DNA show that the approach can significantly improve the efficiency and accuracy of DNA sequence preprocessing and provide more stable performance than the conventional methods do, particularly in high-throughput DNA sequence preprocessing.     

光强倒数色度空间的彩色人脸光照预处理

为了解决彩色人脸识别中色彩信息易受光照影响的问题,提出一种基于光强倒数色度空间(IICS)的彩色人脸图像预处理方法。本方法首先将图像均匀地分割成子块;将每个图像块变换为IICS空间中的一个二维数据集,并根据数据集的线性分布特性估计图像块的光照颜色;然后对全部图像块的光照估计进行颜色直方图统计,根据直方图对分块估计的结果进行合并;最后,利用估计得到的光照和对角模型将图像光照校正到标准白光下,用于人脸识别。在AR和FERET人脸库上的实验表明,通过引入本光照预处理,有效增强了彩色人脸识别方法对光照变化的鲁棒性,提高了识别精度。