The Use of Software Complexity Metrics in Software Maintenance
IEEE Transactions on Software Engineering
Maintaining information systems in organizations
Maintaining information systems in organizations
Software complexity and maintainability
ICIS '89 Proceedings of the tenth international conference on Information Systems
Software maintenance management: changes in the last decade
Journal of Software Maintenance: Research and Practice
Reliability of function points measurement: a field experiment
Communications of the ACM
Software complexity and maintenance costs
Communications of the ACM
Multivariate data analysis (4th ed.): with readings
Multivariate data analysis (4th ed.): with readings
An Economic Model to Estimate Software Rewriting and Replacement Times
IEEE Transactions on Software Engineering
Determinants of software maintenance profiles: an empirical investigation
Journal of Software Maintenance: Research and Practice
Information systems innovation: a framework for research and practice
Information systems innovation and diffusion
Issues and opinion on structural equation modeling
MIS Quarterly
Some factors affecting program repair maintenance: an empirical study
Communications of the ACM
The control of information systems developments after implementation
Communications of the ACM - Special section on management of information systems
Information and Organizations
Software Engineering Economics
Software Engineering Economics
The Mythical Man-Month: Essays on Softw
The Mythical Man-Month: Essays on Softw
Software Maintenance: The Problems and Its Solutions
Software Maintenance: The Problems and Its Solutions
Software Maintenance Management
Software Maintenance Management
IEEE Transactions on Software Engineering
Supporting shared information systems: boundary objects, communities, and brokering
ICIS '00 Proceedings of the twenty first international conference on Information systems
On the uniformity of software evolution patterns
Proceedings of the 25th International Conference on Software Engineering
The impact of IS sourcing type on service quality and maintenance efforts
Information and Management
Investigating quality in large-scale Open Source Software
5-WOSSE Proceedings of the fifth workshop on Open source software engineering
A resource allocation matrix approach to IT management
Information Technology and Management
An empirical analysis of software life spans to determine the planning horizon for new software
Information Technology and Management
Software Effort, Quality, and Cycle Time: A Study of CMM Level 5 Projects
IEEE Transactions on Software Engineering
Conceptualizing and testing formative constructs: tutorial and annotated example
ACM SIGMIS Database
Differential Effects of the Two Types of Information Systems: A Hospital-Based Study
Journal of Management Information Systems
Information Technology and Management
The end of the information system life: a model of is discontinuance
ACM SIGMIS Database
User Acceptance of Agile Information Systems: A Model and Empirical Test
Journal of Management Information Systems
Information Technology Management Practice: Impacts upon Effectiveness
Journal of Organizational and End User Computing
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Aging information systems are expensive to maintain and most are eventually retired and replaced. But what determines (in the choices made by managers) whether and when a system reaches end-of-life? What shapes managers' judgements about a system's remaining life expectancy and do these judgments influence the maintenance effort itself? System maintenance and prospective replacement are examined here in new terms, positing that managers "equilibrate" (balance) their allocation of maintenance effort with their expectations of a system's remaining life. Drawing from data on 758 systems among 54 organizations, support is found for an exploratory structural equation model in which the relationship between maintenance effort and remaining life expectancy is newly explained. A "portfolio effect," reflecting a system's familial complexity, is also found to be directly and positively related to the maintenance effort. A further finding is that a system's size is directly and positively associated with its remaining life expectancy. Notwithstanding normative research suggesting the contrary, larger systems may tend to be longer-lived than smaller systems. Practically, the suggestion is made that better documented and monitored portfolios, together with regular, periodic performance assessments, can lead to better management of systems' life cycles.