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KMi Seminars
Architectural Description of Dependable Software Systems
This event took place on Monday 24 April 2006 at 14:00

 
Dr Cristina Gacek University of Newcastle

The structure of a system is what enables it to generate the system's behaviour from the behaviour of its components. The architecture of a software system is an abstraction of the actual structure of that system. It should only be as complex as it needs to be while fostering the system's dependability ( i.e., the ability to deliver a service that users can justifiably trust).

Architecture description languages (ADLs) are used to describe software system architectures. They support communication among various stakeholders, as well as early analysis and feasibility studies of architectural design decisions.

In this talk I will discuss how ADLs currently address the means to attain dependability, namely fault prevention, fault tolerance, fault removal, and fault forecasting.

Download PowerPoint presentation (48kb ZIP file)

 
KMi Seminars
 

Future Internet is...


Future Internet
With over a billion users, today's Internet is arguably the most successful human artifact ever created. The Internet's physical infrastructure, software, and content now play an integral part of the lives of everyone on the planet, whether they interact with it directly or not. Now nearing its fifth decade, the Internet has shown remarkable resilience and flexibility in the face of ever increasing numbers of users, data volume, and changing usage patterns, but faces growing challenges in meetings the needs of our knowledge society. Globally, many major initiatives are underway to address the need for more scientific research, physical infrastructure investment, better education, and better utilisation of the Internet. Within Japan, USA and Europe major new initiatives have begun in the area.

To succeed the Future Internet will need to address a number of cross-cutting challenges including:

  • Scalability in the face of peer-to-peer traffic, decentralisation, and increased openness

  • Trust when government, medical, financial, personal data are increasingly trusted to the cloud, and middleware will increasingly use dynamic service selection

  • Interoperability of semantic data and metadata, and of services which will be dynamically orchestrated

  • Pervasive usability for users of mobile devices, different languages, cultures and physical abilities

  • Mobility for users who expect a seamless experience across spaces, devices, and velocities