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.     

Data Loading Technology of Data Warehouse

Data warehouse is not the simply data accumulation of operational database. For exerting the function of data warehouse, the construction of data warehouse should be convenient for the data mining and business intelligent work, supply information access, analyze, and share for decision maker. The key to constructing a successful data warehouse is to fully understand the demand of end users from beginning to the end, search and storage data surround users motive closely. This paper first analyzes the data warehouse characteristic and the sort of data component, emphasizes in effective data loading methods and strategies from operational database to data warehouse, gives five sorts data loading methods.     

A Survey on Data Warehouse and Data Mining

The circumstances of rich data and lack of knowledge lead to the emergence of technology of data warehouse and data mining, and arouse the interests of people in various fields. This paper gives a comprehensive introduction about the basic ideas of data warehouse and data mining, key techniques, and the content of the main researches. This paper have also discussed the characteristics as well as developing potential of the combination of data warehouse and data mining.[WT5HZ]     

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.     

基于ZigBee技术的物流仓库温湿度监控系统设计

针对电商快速发展导致物流交易量增加,从而给仓库存储带来较高成本的问题,提出了一种基于ZigBee技术的物流仓库温湿度监控系统设计。本文结合快速发展的无线传感器网络技术,对物流仓库的温度和湿度状态进行监测,并通过ZigBee技术将传感器数据传输至汇聚节点和嵌入式网关设备,并由嵌入式网关设备将数据转发至监控中心,同时监控中心可以根据仓库状态自动开启相关控温和控湿设备。经实际运行验证,本系统可以实现数据自动化采集、传输和显示温湿度,所设计的系统可以有效提升物流企业的仓库状态监控效率,达到智能化管理要求。     

横向通风仓两种半衰期气密性测试的对比

比较了18m跨度的平房仓实仓早籼谷-500Pa和-300Pa两种气密性检测方式的关系。发现半衰期采用-300Pa要严于-500Pa的评价要求。同时为获得气密性检测数据的稳定性和可比性,建议实仓检测气密性时,取整个粮堆正中心位置为检测点。     

隔温式房式仓储粮技术的应用探讨

对隔温式密闭房式仓储粮性能进行研究。结果表明，隔温式密闭房式仓具有良好的降氧、而高温性能，可以延缓储粮品质陈化，防虫、防霉、防鼠，适合于各种粮食储藏。     

粮仓的气密性测试与气密改造

本文论述了仓房气密性对安全储粮的重要性、仓房易漏气部位与处理措施、仓房气密性测试、检漏及评价方法。分析了仓房结构与气密性、空仓气密性与实仓气密性的关系。     

紫外高压诱杀灯防治仓外储粮害虫研究

利用紫外高压诱杀灯对仓外储粮害虫发生的种类、数量以及仓外害虫昼夜、全年的活动规律进行研究,不仅证实紫外高压诱杀灯是一种较为理想的仓外储粮害虫控制的器械,也为储粮害虫综合防治的仓外防治提供了依据。     

Frame of Parallel Data Extraction Interface for Commercial OLAP

The OLTP system can not afford the demand of decision support due to the drastic commerce competition, so the appearance of OLAP technology is importanct. The key technical of OLAP, the classical resolvent of data warehouse and the methods of data preprocessing are studied. A frame of parallel data extraction interface for commercial OLAP is proposed. Data preprocessing technology (data cleaning, data integration and transform, data reduction) connected with the frame is practically studied and applied. The eficiency and the practicality of the frame are illustrated by practical application.     

平房仓空调控温安装方式的探索

在富氮低氧储存条件下,对平房仓内气囊薄膜上下形成的空间,进行了三种不同空调控温安装方式的试验,试验结果表明,采用蒸发器(室内机)(不带风机)+中压风机组合,利用PVC管道及管道上开孔来输出冷气和回送气体,形成内部循环式的气流空调控温安装方式,可以有效控制平房仓的仓温。     

拱板仓气密技术研究

本文介绍了对现有拱板仓进行气密改造时所选用的材料、对仓房有形孔与无形缝的处理技术，并测试了改造后仓房的气密性，在空仓与实仓条件下达到8分钟与4分钟以上的气密效果，为现有拱板仓气密改造提供了一条新路子。     

福建‘翠碧1号’片烟不同环境醇化质量对比分析

为提高福建‘翠碧1号’片烟的醇化质量,以福建‘翠碧1号’片烟为试验材料,对其分别在空调库和普通仓库存放的醇化质量进行对比分析研究。试验结果表明：在外观质量方面,空调库醇化的片烟颜色和光泽度保持较好,普通库醇化则在醇化24个月后颜色转深程度大;化学成分方面,普通库醇化的上部叶于醇化24个月后还原糖降幅较大;在感官质量方面,空调库醇化的片烟在醇化21~24个月后相较于普通库醇化片烟有明显优势;综上所述,将档次较高或存放时间较长的片烟于空调库醇化,而档次低或存放时间较短的片烟于普通库醇化可使片烟工业价值提高并有效节约能耗。     

豫北钢板平房仓隔热控温储存大豆应用试验

严格按照施工工艺要求,通过对钢板仓内表面喷涂5cm厚的聚氨酯发泡储存大豆试验,夏季仓温相比砖混高大平房仓要低1～2.8℃,豆堆上层粮温低0.8～3.0℃,大豆储存品质也较砖混高大平房仓效果要好,证明了豫北地区钢板平房仓隔热控温储存大豆的可行性。     

Hilbert-Huang transform and denoising for partial discharge ultrsonic singals of large motor

Empirical mode decomposition (EMD) algorithm is introduded as the core of the Hilbert-huang transform (HHT), and implementation process of EMD is analyzed. Then data compression denoising algorithm based on EMD is proposed, simulation and experimental signals are used for verification of the effect of EMD. In the same data sources, the comparison of data compression denoising approaches based on the EMD, db2 wavelet and db8 wavelet are conducted. In addition, physical experiment of the same analysis and comparisons are conducted on a running motor in a Chongqing electrical plant. Simulation and experimental results show that data compression denoising algorithm based on EMD can achieve the same denoising effect, or even better than based on db2 wavelet, db8 wavelet. The former is more perfect than the latter in the real signal processing, and denoising based on EMD is not loss of the original signal energy.     

高大平房仓粮面施药自然渗透熏蒸试验

对高大平房仓磷化铝粮面投药后磷化氢自然扩散渗透情况进行检测,并对熏蒸杀虫效果进行了试验,检测分析了不同仓房不同温度和同一仓房不同温度下磷化氢的扩散速度和分布规律.试验结果表明:高大平房仓由于粮堆内外温差的存在,粮面施药后磷化氢气体在相对比较短的时间内借助粮堆内的微气流扩散到粮堆的各层,并能分布均匀,而且粮堆内温差越大,磷化氢气体扩散速度越快,气体分布达到均匀的时间越短.     

粮食仓房隔热性能对低温储粮效果的影响

研究分析了不同粮食仓房围护结构、隔热保冷性能对粮温变化的影响。提出了对于不同的地区、不同类型的粮仓、不同围护结构的要求；并提供了一般建筑结构的粮食仓房隔热性能及改造的常用技术。     

基于Phoenics的稻谷通风过程水分分布模拟初探

通过改进Phoenics软件中的水分、热量和动量控制方程,并引入呼吸产生的水分源项,建立了通风过程中稻谷堆三维水分传递控制方程,可用于研究通风过程中稻谷堆内热湿传递规律。以小型测试平台数据与文献中的高大平房仓通风试验数据为基础,通过编写和导入用户自定义程序(Q1),采用有限体积元法对稻谷堆机械通风过程的水分、热量和动量方程求解。数值模拟研究结果显示,在网格数量较少的情况下,粮堆平均水分预测值仍可与实测值基本吻合,表明机械通风降水过程中稻谷的呼吸作用不可忽略。     

CO2气调储藏防治储粮害虫的研究

在气密性良好的粮仓内通入CO2气体来改变粮仓内气体的组成，使粮仓中的昆虫因缺氧窒息而死亡。试验表明：CO2气调技术能完全杀死粮仓内昆虫成虫、卵、蛹和幼虫，有效保持粮食较高品质和延长储藏期，不会产生任何残留污染，是一项能完全替代磷化铝的储粮新技术。