Object-oriented approach is becoming very popular in software development community as an alternative to traditional approach i.e. structured analysis & design methodologies due to obvious reasons. Consequence, this approach has become de facto standard of software development organization. As we know, software reliability is one of the important dynamic quality factors in overall quality model...

A challenge in software design is to find solutions that balance and optimize the quality attributes of a system. It is not always possible to maximize each attribute and one has to make trade-offs. In this paper we present a case-study of an application where a key component, special designed to be highly maintainable, caused an unexpected and serious performance problem. Interviews with the d...

A challenge in software design is to find solutions that balance and optimize the quality attributes of the application. In this paper we present a case study of an application and the results of a design decision made on weak assumptions. The application has been assessed with respect to performance and maintainability. We present and evaluate an alternative design of a critical system compone...

Design patterns describe good solutions to common and reoccurring problems in program design. Applying design patterns in software design and implementation have significant effects on software quality metrics such as flexibility, usability, reusability, scalability and robustness. Applying design patterns in software systems does not have a specific rule. It is possible to apply two design pat...

Components-based development is promising in improving software development productivity and software quality by re-using existing well-tested software components. However, one of the challenges of component-based development is how to integrate various components in software systems. In this paper, an approach is presented to apply design patterns to component integration. This approach uses a...

Background: One major challenge in brachytherapy is to verify the accuracy of dose distributions calculated by the treatment planning system. In this project, a new phantom design has been introduced for quality assurance of dose distributions in gynocological (GYN) brachytherapy implants using EBT GafChromic film. Materials and Methods: This phantom has been designed and fabricated from 90 sla...

In the era of experience economy, how best to deliver memorable and exciting customer experiences has become a key issue for service providers, and customers can involve themselves in service experience delivery by actively deciding appropriate services rather than passively accepting existing ones. However, service providers frequently consider profit and cost first despite knowing that high-q...

E-learning is an important and widespread contemporary trend in education. Because its success depends on the quality of digital materials, the mechanism by which such materials are accredited has received considerable attention and has influenced the design and implementation of digital courseware. For this reason, this study examined the mechanism by which digital materials are accredited in ...