Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 19 of 19 for “"Legacy system"”.
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Business rules based legacy system evolution towards service-oriented architecture.
Enterprises can be empowered to live up to the potential of becoming dynamic, agile and real-time. Service orientation is emerging from the amalgamation of a number of key business, technology and cultural developments. Three essential trends in particular are coming together to create a new …
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Digital Government Systems: Tackling The Legacy Problem Through A Game-Based Approach To Business Requirements Analysis
Government agency reliance on legacy systems is problematic: they are costly to maintain, difficult to integrate with and they hinder innovation. However, the replacement of legacy systems is not a straightforward endeavor, and it often results in technology substitution that is not accompanied by …
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An agent-based service-oriented approach to evolving legacy software systems into a pervasive computing environment.
… Service-Oriented approach to evolving legacy system into a Pervasive Computing environment. The methodology consists of multiple phases: using reverse engineering techniques to comprehend and decompose legacy systems, employing XML and Web Services to transform and represent a legacy …
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An ontology-based reengineering methodology for service orientation
… be designed and integrated with other software systems. Web services, together with service-oriented architectures, are promising integration technology to facilitate legacy system Webification. However, since most components in a legacy system were not designed and developed as services, the …
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Change Request Prediction and Effort Estimation in an Evolving Software System
… project management perspective for an evolving legacy system. Software Reliability Growth Models (SRGM) have been used to predict future defects in a software release. Modern software engineering databases contain Change Requests (CR), which include both defects and other maintenance requests. …
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Systems-Theoretic Accident Model and Processes (STAMP) Applied to a U.S. Coast Guard Buoy Tender Integrated Control System
The Systems-Theoretic Accident Model (STAMP) developed by MIT's Dr. Nancy Leveson was applied in this thesis to a ship navigation control system used on U.S. Coast Guard buoy tenders. The legacy system installed on the Service's 16 sea-going buoy tenders experienced numerous incidents that had …
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Evolution of batch-oriented COBOL systems into object-oriented systems through unified modelling language.
Throughout the world, there are many legacy systems that fulfil critical business functions but often require new functionality to comply with new business rules or require redeployment to another platform. Legacy systems vary tremendously in size, functionality, type (such as batch-oriented or …
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An Approach to Implementing Cloud Service Oriented Legacy Application Evolution
… are planning to migrate their existing systems into this internet-driven computing environment. This investigation is proposed for this purpose and will be undertaken with two main aims. The first aim is to establish a general framework and method to assist with the evolution of legacy …
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Software Renovation: An In-house Perspective with Case Studies
… To mitigate the risks associated with these legacy systems, software renovation can be undertaken. Software renovation can be described as a series of processes and/or tools used to modernize a legacy system, thereby preserving and maintaining the investment it represents while decreasing the …
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Automatic Exploit Generation for Cross-Language Attacks
… At the same time, a significant portion of legacy system software is written in C/C++, which are known to be memory-unsafe. This has led to an arms race between attackers devising ever clever ways to execute memory corruption and developers engineering mitigation techniques to either prevent …
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Characterizing and Diagnosing Architectural Degeneration of Software Systems from Defect Perspective
The architecture of a software system is known to degrade as the system evolves over time due to change upon change, a phenomenon that is termed architectural degeneration. Previous research has focused largely on structural "deviations" of an architecture from its baseline. However, another angle …
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Enhancing Sustainability in Post-Construction Management: Leveraging API-Driven AI and Digital Twins for Optimising M&E Systems
… emissions, with mechanical and electrical (M&E) systems representing the largest operational energy consumers. While AI-enabled Digital Twin technologies demonstrate proven energy savings of 10-38% in academic literature, practical adoption in post-construction building management remains …
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Model driven software modernisation
… relegate more and more existing software to legacy status. Generating software through reusing legacy systems has been a primary solution and software re-engineering has the potential to improve software productivity and quality across the entire software life cycle. The classical …
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Strategies for meeting future capacity needs on the light rail MBTA Green Line
… metropolitan area is the busiest light rail system in the United States. Aging infrastructure and vehicles, a soon-to-be-constructed line extension, and the potential for 40% ridership growth by mid-century will tax already inconsistent service. But in this challenge lies opportunity: a …
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Sustainable cities and institutional change : the transformation of urban stormwater management
… network of rainwater capture and infiltration systems-as a more sustainable and less costly alternative to building more and bigger underground pipes to control polluted urban runoff and sewer overflows, as required under the Clean Water Act. Yet the extent to which cities facing very similar …
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A study of firm's behavior in the B2B e-business regime
… or is it just the extension of the old VAN-EDI system is still under debate. This research tries to answer some of the most fundamental questions of why and how companies adopt e-business application by studying the e-business fast mover's behaviors in the following three domains: the initiative …
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Stable Marriage Problem Based Adaptation for Clone Detection and Service Selection
… process of finding duplicated code through the system for several purposes such as removal of repeated portions as maintenance part of legacy system. Service selection is the process of finding the appropriate web service which meets the consumer’s request. Both problems can be converted into a …
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A holistic method for improving software product and process quality
… difficult to measure. Deficient software systems regularly result in failures which often lead to significant financial losses but more importantly to loss of human lives. Such systems need to be either scrapped and replaced by new ones or corrected/improved through maintenance. One of the …
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A wide spectrum type system for transformation theory
… can be confronted with is the migration of a legacy system. Usually, these systems are unstructured, poorly documented and contain complex program logic. The reason for this, in most cases, is an emphasis on raw performance rather than on clean and structured code as well as a long period of …