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Resource usage in Clouds can be improved by deploying applications with richer defined requirements. Such "richer requirements" involve wider application / user specific context capture expressed in interrelated models. The use of model based requirements is presented using input from test-beds monitoring resource use in terms of Trust, Risk, Eco-Efficiency and Cost (TREC) models. The results...
Despite the opportunities offered by Systems-of-Systems engineering, there is a lack of models and tools to support dependable decision-making during design and evolution. Such models should combine the rigour needed for reliable analysis with the abstractions needed to describe heterogeneous and independent constituent systems, and the contracts between them. Models should also provide a basis for...
This work presents a contribution towards generalising the representation of geospatial entities and their relations for simulating complex spatial systems using the agent based approach. We analyse the literature, and argue that each of the four types of relation is necessary. These relations can be grouped in two classes, placements and neighbourhoods, with likenesses and differences between them...
Requirements engineering for complex systems often requires inter-disciplinary collaboration between domain experts who might not have software or systems engineering background. Existing requirements modeling languages unfortunately do not support this scenario well. First, the visual notation of languages like UML or SysML does not follow scientific heuristics and therefore does not provide a homogeneous...
We briefly review fundamental concepts related to systems theory and systems engineering. We also review and structure a list of important properties for an electronic system and paradigms and techniques applicable to analysis and design. Then we present two specific case studies, in which the systems theory approach to electronics engineering teaching and research has been very influential.
Goal-oriented requirements engineering has been extensively studied and it certainly has a lot of appeal and potential. However, it is not (yet) in wide-spread industrial use. We conjecture as a major reason that the existing approaches are somewhat isolated and generally too complex. The latter reason makes them difficult to apply in real-world projects. Therefore, we distill the essence of goal-oriented...
Companies, which work on innovative products development, encounter difficulties to launch and commercialize new ideas. Many ideas, considered by companies as innovative, turn out to be commercial failures. Knowing customers needs and desires help companies preventing this situation and proposing successful products (products in their general definition, either material goods or services). Moreover,...
Inspections can be made more cost-effective by using capture-recapture methods to estimate post-inspection defects. Previous capture-recapture studies of inspections used relatively small data sets compared with those used in biology and wildlife research (the origin of the models). A common belief is that capture-recapture models underestimate the number of defects but their performance can be improved...
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