限定為單個多維數(shù)據(jù)集;W HERE 子句用來將返回

選擇數(shù)據(jù)源, 對數(shù)據(jù)倉庫的數(shù)據(jù)組織進行邏輯結構
設計和物理存儲結構設計, 即多維數(shù)據(jù)結構的事實
表和維表設計. 

(2) 元數(shù)據(jù)管理. 元數(shù)據(jù)是關于數(shù)據(jù)的數(shù)據(jù), 它
描述了數(shù)據(jù)倉庫的數(shù)據(jù)和環(huán)境. 通常可以分為2 類: 
一類是管理元數(shù)據(jù), 它對原始數(shù)據(jù)及其內容、數(shù)據(jù)倉
庫主題、數(shù)據(jù)轉換及各種操作信息進行描述[4]; 另一
類是用戶元數(shù)據(jù), 它幫助用戶查詢信息、理解結果、
了解數(shù)據(jù)倉庫中的數(shù)據(jù)和組織. 
(3) 圖書館決策的數(shù)據(jù)分析工具設計. 建立結構
化的決策支持查詢, 實現(xiàn)和使用數(shù)據(jù)倉庫的數(shù)據(jù)分
析工具, 包括優(yōu)化查詢工具、統(tǒng)計分析工具、C.S 工
具、OLA P 工具及數(shù)據(jù)開采工具等, 通過分析工具實
現(xiàn)圖書館決策支持需求. 
313　系統(tǒng)測試

的數(shù)據(jù)限定為特定維度和成員條件. 下面給出高校
314　系統(tǒng)維護
可結合多種測試方法, 對應用程序、查詢工具和分析
圖書管理DW 的一個典型查詢: 工具等進行測試, 以確保系統(tǒng)的完善和健壯. 
SELECT {[Readers ]. [name ]} ON AXIS (0), 
{[Time ]. [2001]. [8], 

包括數(shù)據(jù)倉庫的完備性測試和系統(tǒng)功能測試. 

[T im e ]. [ 2002 ]. 
圖書管理數(shù)據(jù)倉庫也必須進行日常維護和管


FROM Borrow
WHERE {[Readers ]. [department ]. [computer ]
}


[ 8 ]} ON A X IS (1) , 
{ [Book s ]. [ catego ry ]. [ com p u ter ]} ON 
A X IS (2) 
cube 
在上述MDX 語句中, SEL ECT 子句決定了3 
個維度, 分別是Readers 維、T im e 維和Books 維; 
FROM 子句決定析取數(shù)據(jù)時使用的是Borrow 多維
數(shù)據(jù)集;W HERE 子句將析取限制于Readers 維中
計算機系. 查詢結果為2001 年和2002 年暑假期間
(8 月份) 擁有計算機類圖書的計算機系學生名單. 

3　圖書管理數(shù)據(jù)倉庫的開發(fā)步驟

高校圖書管理數(shù)據(jù)倉庫的開發(fā)主要包括各種原
始數(shù)據(jù)的匯總、轉儲和管理, 以及利用分析工具獲取
所需信息等, 具體實現(xiàn)步驟包括分析、設計、實施和
維護. 

311　系統(tǒng)分析

根據(jù)用戶需求, 制定數(shù)據(jù)倉庫工程的目標和計
劃, 選擇實現(xiàn)圖書管理數(shù)據(jù)倉庫的軟硬件資源, 包括
開發(fā)平臺、開發(fā)工具、終端訪問工具、DBM S 以及通
信網絡. 

312　系統(tǒng)設計

(1) 主題設計. 根據(jù)系統(tǒng)分析的結果確定主題, 
理, 定期進行數(shù)據(jù)更新, 特別是電子類圖書的借閱數(shù)
據(jù)的更新, 以確保數(shù)據(jù)倉庫正常運行. 

4　結束語

高校建立圖書管理數(shù)據(jù)倉庫, 就可以方便地從
大量繁雜的數(shù)據(jù)中提煉出真正有價值的信息和知
識, 幫助決策者進行決策. 一方面將推動圖書館自身
的極大發(fā)展, 同時對學校其他部門也提供重要的決
策支持. 數(shù)據(jù)倉庫建設是一個復雜的過程, 高校可以
根據(jù)自己的實際情況, 選擇合適的數(shù)據(jù)倉庫解決方
案, 按計劃穩(wěn)步實施, 并在運行的過程中不斷進行調
整、完善. 只有這樣, 數(shù)據(jù)倉庫才能真正成為圖書館
和學校的好參謀. 
參考文獻: 

[1] 　張維明. 數(shù)據(jù)倉庫原理與應用[M ]. 北京: 電子工業(yè)出
版社, 2002. 15217. 
[2] 　牛士英. 新時期高校情報室的前景[J ]. 情報資料工作, 
2001, (1): 122. 
[3] 　王珊. 數(shù)據(jù)倉庫技術與聯(lián)機分析處理[M ]. 北京: 科學
出版社, 1998. 1562170. 
[4 ] 　Inmon W H. U sing D ata W arehouse[M ]. John W iley, 
1995. 27236. 
編輯: 張新寶


. 1994-2006 China Academic Journal Electronic Publishing House. All rights reserved. http://www.cnki.net 


surface; numeric controlmachining 
L IM ing 2gui (CollegeofMechanical Engineering,Xi’anShiyouUniversity,Xi’an 710065, Shaanxi, 
China) JXSYU 2004 V. 19 N. 2p. 54257 

Meshing theoryofbeveloidgearswithcrossedaxesandcalculationof inducednormalcurvature 

Abstract:Basedon the spacemeshingtheory, itisproven thatnon2involute beveloid gearsmeshing 
with crossed axes can achieve to line contact. The meshing equation and tooth profile equation are 
presented by using meshing theory. A theoreticalway is put forward to calculate the induced normal 
curvaturealong thenormaldirectionofthecontact line. 

Keywords:crossedaxes; noninvolutebeveloidgear; linecontact; inducednormalcurvature 
L I Gui2x ian, W EN J ian2m in, LI Xiao, et al (Electromechanical college, Harerbin Institute of 
Technology, Harerbin 150001, Heilongjiang, China)JXSYU 2004 V. 19 N. 2p. 58262 

Developmentofa intelligentmonitoringandcontrollinginstrumentforoilfieldstations 

Abstract: The design of a new multi2functional intelligent monitoring and controlling instrument 
(JZK2D) foroilfieldstationsanditsimplementationarepresented. Thedesignofthehardwareisbasedon 
IntelMCS80C251 microcomputer andALTERA EPM 7128 EPLD deviceFor oilfield stations,
The LC.

. OS2II p reemp tive real2tim e m ulti2task kernel (RTOS) is applied to the design of the software. A state2machinemodelof single2wellmeasuringlogic isconstructed, anditisimplementedwithAHDLsingle2well measurement;
double2volume separator 
. JZK2D is 
excellent, and its advantages include friendly human2machine interface, powerfulmonitoring and control 
function, network support and so on. 


(Schoolof Electronic and Information Engineering, Xi’an 
JiaotongUniversity, China) JXSYU 2004 V. 19 N. 2p. 63266 
Key words: oilfield station equipment; intelligent monitoring and 
controlling instrumentchipmicrocomputer; 
LIU Wen2jiang , et al 
Xi’an 710049, Shaanxi,
; 
HU Jun, LI Jia, 

Applicationofneuralnetworktoearlydetectionof thefireofrubberbeltconveyer inmine 
Abstract: Thedetectionofthefireof rubberbeltconveyer isstudiedbymeansofaforwardneural 
network w ith three layers, and temperature, rate of temperature change, concentration of carbon 
monoxideand rateofcarbonmonoxideconcentrationchangeare taken as theparametersof thenetwork. 
Theappropriateparametersandarchitectureofnetworkareobtainedafterthenetwork istrainedwith 81 
setsofdata. Thesimulationresultshowsthattrainingtimeistheshortestanderrorreducesmostrapidly 
when theneuronsinhidden layerare tenandmomentum coefficientisequalto 0.95. The test resultof 
PVC rubberbeltconveyershowsthatwhen 0.5isregardedasthealarm thresholdandcertaintimedelayis 
employed, theneuralnetworkfiredetecting systemwillalarm asfire takesplaceabout 350 s. So itcan 
effectively implement early alarm ; at the same time, the it greatly enhances the suitability of an alarm 
system to environmental variation and anti2interference capability, and the intelligent degree of an alarm 
system is also imp roved. 
Key words: rubberbeltconveyer; fire; neuralnetwork; automaticdetection; carbonmonoxide 
GUO J ian, WANG Ru 2lin, LI N ing , et al (Department of Information and Electroni Engineering, 
ChinaUniversieyofMiningandTechnologyBeijing 100083, china)JXSYU 2004 V.19 N.2p.67270 

Studyofdatawarehouseforlibrarymanagementof collegesanduniversities 

Abstract:Agreatdealofdataisproducedinlibrarymanagementofcollegesanduniversities. Alotof 
important information for decision2making can be got by using data warehouse. Based on the newly 
research resultsof datawarehouse, the system function, constitution and star2shaped data model of the 
data warehouse for library management are discussed. A typical MDX inquiry and the development 
procedureof thedatawarehousearepresented. 

Key words: datawarehouse; star2shapedmodel; modernizationoflibrarymanagement 
ZHANG Xu 2bo, QU Zhan, LI Xiao2gang (College of Computer, Xi’an Shiyou U niversity, Xi’an 
710065, Shaanxi, China) JXSYU 2004 V. 19 N. 2p. 71273 

. 1994-2006 China Academic Journal Electronic Publishing House. All rights reserved. http://www.cnki.net