Aspect Oriented Programming (AOP) is a new programming paradigm that offers a novel modularization unit for the crosscutting concerns. Functionalities originally spread across several modules and tangled with each other can be factored out into a single, separate unit, called an aspect. We investigated automated techniques that can be used to support the migration of existing Object Oriented Pr...

Refactoring is the process of improving the design of existing code by changing its internal structure without affecting its external behaviour, with the main aims of improving the quality of software product. Therefore, there is a belief that refactoring improves quality factors such as understandability, flexibility, and reusability. However, there is limited empirical evidence to support suc...

However many companies shy away from the perceived effort required for the changeover to these new techniques. They have a code base that has been built up over decades and although the software has been constantly extended and improved. This has also led to the creation of more and more “spaghetti code”. Millions of functioning lines of code would need to be analyzed, re-programmed, and finall...

Code bases contain often millions lines of code. Code recommendation systems ease programming by proposing developers mined and extracted use cases of a code base. Currently, recommender systems are based on hardcoded sets what makes it complicate to adapt them. Another research area is adaptable live detection of code clones. We advance clone detection and code recommender systems by presentin...

Existing researches suggest that the code clone (duplicated code) is one of the factors that degrades the design and the structure of software and lowers the software quality such as readability and changeability. However, the influence of code clones on software quality has not been quantitatively clarified yet. In this paper, we have tried to quantitatively clarify the relation between code c...

Implementing UIs is often a tedious task. To address this, UI Builders have been proposed to support the description of widgets, their location, and their logic. A missing aspect of UI Builders is however the ability to reuse and compose widget logic. In our experience, this leads to a significant amount of duplication in UI code. To address this issue, we built Spec: a UIBuilder for Pharo with...

We show how to refactor SPIN for safety model checking resulting in a compact model checker occupying less than 200 lines of code without appreciable loss of performance while reusing much of SPIN’s front-end facilities. In addition to being far easier to understand and being eminently suitable as a basis for extensions by the researcher and developer community, the resulting model checker is a...

FPSOs are useful in newly established offshore oil regions where there is no pipeline infrastructure in place, or in remote locations where building a pipeline is cost-prohibitive. In this study, hydrodynamic analysis of FPSO is inquired based Boundary Element Method (BEM) and wave forces/moments, added mass and damping coefficients of degrees of freedom are obtained by AQWA software. FPSO moor...