EAN: 9783642023507

ARCHITECTURES FOR ADAPTIVE SOFTWARE SYSTEMS KAR...

Much of a software architect's life is spent designing software systems to meet a set of
quality requirements. General software quality attributes include scalability  security 
performance or reliability. Quality attribute requirements are part of an application's
non-functional requirements  which capture the many facets of how the functional - quirements
of an application are achieved. Understanding  modeling and continually evaluating quality
attributes throughout a project lifecycle are all complex engineering tasks
whichcontinuetochallengethe softwareengineeringscienti ccommunity. While we search for improved
approaches  methods  formalisms and tools that are usable in practice and can scale to large
systems  the complexity of the applications that the so- ware industry is challenged to build
is ever increasing. Thus  as a research community  there is little opportunity for us to rest
on our laurels  as our innovations that address new aspects of system complexity must be
deployed and validated. To this end the 5th International Conference on the Quality of Software
Archit- tures (QoSA) 2009 focused on architectures for adaptive software systems. Modern
software systems must often recon guretheir structure and behavior to respond to c- tinuous
changes in requirements and in their execution environment. In these settings  quality models
are helpful at an architectural level to guide systematic model-driven software development
strategies by evaluating the impact of competing architectural choices.

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