This work provides means for a better understanding of the actions involved in the software testing of concurrent embedded systems. It complements the existing approaches for concurrency bug dynamic analysis with models of concurrency limitations ......Lasīt vairāk
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In agile software development cost and effort estimation is challenging, as the requirements are evolved as development progress. Current practice relies heavily on human judgment that is based on limited information and is prone to human judgment ......Lasīt vairāk
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Users want to gain more self-determination in the form of self-responsible definition and control of their security and privacy demands. This dissertation addresses the automated creation of so-called Policy Administration Points for the ......Lasīt vairāk
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Software-controlled technical systems are omnipresent in our daily lives. In many domains, such as automotive, avionics, and robotics, engineers are currently building systems that act without human assistance, in only partly defined open ......Lasīt vairāk
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To ensure positive User Experience (UX), engineering an interactive software product should consider Hedonic Quality (HQ). The thesis shows the difficulties of identifying HQ in user requirements and ways to mitigate them. In addition, the thesis ......Lasīt vairāk
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Agile development is the dominating approach in software engineering. Many domains in which software evolved to be a leading factor would like to benefit from agile development. Since regulated domains do have problems in applying agile methods like......Lasīt vairāk
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The lack of guidance on how to specify safety requirements that are properly traceable to the architecture design and to failure propagation models is one of the main reasons for their incompleteness and inconsistency, what turns to be a root cause ......Lasīt vairāk
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Nowadays successful Software Product Lines (SPLs) are often developed in an incremental way, in which the variability artifacts evolve both in space and in time. In order to solve practical challenges in variability specifications and realizations, ......Lasīt vairāk
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SafeRE (Safety-oriented Requirements Engineering) is a novel method for concurrently and completely determining functional requirements and safety requirements in software-intensive safety-critical systems. It defines a general structure and a ......Lasīt vairāk
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Software reuse approaches are known to enable considerable effort and cost savings during the development of a group of software systems with a significant overlap in functionality. In practice, however, the need for systematic reuse often becomes ap...Lasīt vairāk
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There is a huge trend in computer systems towards distributed, open and adaptive systems of systems. The application domains of such systems are often safety-critical, and established safety engineering paradigms are not applicable without ......Lasīt vairāk
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Adaptive embedded systems use at runtime different system configurations in order to calculate output signals for actuators from sensor signals. The set of possible system configurations is huge. The ESP has for instance more than 10^72 possible ......Lasīt vairāk
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Most of the mistakes committed by users are preventable. This thesis describes the AssistU approach which iteratively interprets and reacts on the users input during runtime. The underlying assumption is that unintentionally the user reveals more ......Lasīt vairāk
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Die Arbeit bedient sich der Quantifizierung von Sicherheitsanalysen, um genauere Schranken für die maximale Ausführungszeit eingebetteter Systeme ermitteln zu können. Dabei stehen vor allem sicherheitskritische eingebettete Systeme im Vordergrund. ......Lasīt vairāk
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Developing customer-specific software systems with reuse is often less efficient than expected. One important reason is that the elicitation and negotiation of customer requirements is not systematically supported yet, and it heavily relies on ......Lasīt vairāk
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Incomplete system requirements specifications can lead to severe budget, quality, and project risks. Selecting methods during process improvement that lead to high completeness provides an opportunity to change this situation.This thesis presents ......Lasīt vairāk
