Abstract:

While substantial research has been conducted in both academic and industrial circles on refined project cost

management, existing studies tend to focus more on refining details with limited practical implementation.

Moreover, their application scenarios are largely confined to traditional sectors such as construction engineering,

offering limited adaptability and guidance for enterprises in civil aviation information systems. To address this gap,

this paper investigates large-scale project portfolios in civil aviation information systems and develops refined

budget and cost management strategies based on practical exploration. By establishing a comprehensive process

management system encompassing "budget formulation-budget decomposition-cost accounting-cost control", a

closed-loop management mechanism is formed. This system is characterized by detailed depth, fine granularity,

and strong operability, providing targeted guidance for practitioners in civil aviation and filling the research gap in

refined budget and cost management for large-scale project portfolios in the civil aviation information systems.

Key words:

civil aviation information systems, project portfolios, cost management, refined management, closed -loop

management

CLC Number: 

• F562