Sebastian Eder

Learn More
OBJECTIVES Non-alcoholic fatty liver disease (NAFLD) is closely linked to obesity; however, 5-8% of lean subjects also have evidence of NAFLD. We aimed to investigate clinical, genetic, metabolic and lifestyle characteristics in lean Caucasian subjects with NAFLD. METHODS Data from 187 subjects allocated to one of the three groups according to body mass(More)
Requirements change and so (should) do requirements artifacts, such as use cases. However, we have little knowledge about which changes requirements engineers actually perform on use cases. We do not know what is changing, at which locations use cases change and need a deeper understanding of which changes are problematic in terms of difficult or risky. To(More)
Tests are central artifacts of software systems and play a crucial role for software quality. In system testing, a lot of test execution is performed manually using tests in natural language. However, those test cases are often poorly written without best practices in mind. This leads to tests which are not maintainable, hard to understand and inefficient(More)
Testing and development are increasingly performed by different organizations, often in different countries and time zones. Since their distance complicates communication, close alignment between development and testing becomes increasingly challenging. Unfortunately, poor alignment between the two threatens to decrease test effectiveness or increases(More)
Context: Bad requirements quality can cause expensive consequences during the software development lifecycle, especially if iterations are long and feedback comes late. Objectives: We aim at a light-weight static requirements analysis approach that allows for rapid checks immediately when requirements are written down. Method: We transfer the concept of(More)
A system's requirements and its architecture are usually developed at least partly in parallel. This demands a continuous and automated assessment to confirm that the architecture conforms to its requirements. To enable such an assessment, the stepwise formalization of informal requirements has been proposed. However, there is no canonical set of artifacts(More)
As a measure of software quality, current static code analyses reveal thousands of quality defects on systems in brown-field development in practice. Currently, there exists no way to prioritize among a large number of quality defects and developers lack a structured approach to address the load of refactoring. Consequently, although static analyses are(More)
Software systems contain unnecessary code. Its maintenance causes unnecessary costs. We present tool-support that employs dynamic analysis of deployed software to detect unused code as an approximation of unnecessary code, and static analysis to reveal its changes during maintenance. We present a case study on maintenance of unused code in an industrial(More)