System Analysis for the Operation and Management of Irrigation Associations
Date Issued
2005
Date
2005
Author(s)
Chang, Chin-Hao
DOI
zh-TW
Abstract
Irrigation associations are the major management organizations of the irrigation water use in Taiwan. The management practices and associate data in the irrigation associations are numerous, manifold, complex and related to each other. The relationship among the data and the process can be revealed and better understood if a clear and holistic view can be present for the whole organization. This paper is to study the irrigation management practices by system analysis approach.
The transactions of each of the main subdivisions of the irrigation association were investigated and a list of the transactions with all the related forms and reports was generated. Context diagram, data flow diagram (DFD), and data dictionary were constructed to produce a visualized expression for data flow in the system and relationship among different practices. The frequency, time needed, and relative significance of each practice were collected. The data were standardized and integrated to create an index of .importance for each practice.
The complicated relationship among the data and process for irrigation management practices can be recognized through the network-type expression in the data flow diagram. The indices of importance were revised through network analysis on the data flow diagram to take into account the connecting relationships among transactions. This index can be regarded as the importance of the transaction in the system and can be used as a basis for information system implementation schedule or resource allocation in system maintenance later on.
Subjects
系統分析
結構化分析
Irrigation association
system analysis
structured analysis
Type
thesis