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URN etd-0909110-183045 Statistics This thesis had been viewed 2327 times. Download 1421 times. Author Wan-Ming Hsueh Author's Email Address No Public. Department Information Management Year 2009 Semester 2 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 90 Title Evaluations of Information system End-user Operation Procedures by Using Petri Net Keyword Process Re-Engineering Database Schema α Algorithm Petri Net Event log Event log Petri Net α Algorithm Database Schema Process Re-Engineering Abstract To date, information system is introduced into many enterprises, to provide standard working process to users for reference according to original development documents as it is applied. How to analyze and validate whether users in procurement information system comply with standard working process with no deficiency in information security topics caused, should be emphasized by enterprises. This study proposed a mechanism to analyze user operation, by analyzing varied data behavior in event log of database when users are operating information system, by establishing priority of each behavior in log file on the basis of scheme in database, to further acquire individual user’ process operating database. Adopting Petri Net, this study drew standard process into Petri Net map. As for individual user’s process operating database, this study converted such process into Petri Net map according to convert steps in α algorithm, for benefiting auditor observation. To analyze difference between user’s processes with standard process, this study constructed a mechanism for automatic difference analysis, to assist auditor in analyzing user’s process automatically. Meanwhile, to validate its feasibility, a system is developed to assist auditor in knowing whether unpredicted losses inside enterprise are caused by improper behavior of user, thus to further reduce deficiency inside enterprise and provide chances of process re-engineering to enterprises with process difference results. Advisor Committee Shing-Han Li - advisor
Files Date of Defense 2010-07-28 Date of Submission 2010-09-09