This paper presents a dynamic adaptation scheme for the frequency of inter-deme migration in distributed genetic algorithms (GA), and its VLSI hardware design. Distributed GA, or multi-deme-based GA, uses multiple populations which evolve concurrently. The purpose of dynamic adaptation is to improve convergence performance so as to obtain better solutions. Through simulation experiments, we pro...

In broadband networks, appropriate use of database migration can drastically shorten the average transaction processing time of a distributed database system. In previous work, we have proposed a transaction processing method based on database migration, a method in which we assumed that the network bandwidth is very broad and almost uniform over the whole network. However, WANs consist of vari...

New business models, constant technological progress, as well as ever-changing legal regulations require that companies replace their business applications from time to time. As a side effect, this demands for migrating the data from the existing source application to a target application. Since the success of the application replacement as a form of IT maintenance is contingent on the underlyi...

Cloud computing is a technology that is built on the theory of virtualizationthe idea to allow multiple virtual machines to share the resources of a host. One of the features of virtualization is live migration. This feature will allow one or more virtual machines to be migrated from one host to another without interfering with applications running on those virtual machines. However, there are ...

Service migration can be used as a security mechanism to dynamically move critical services from their current compromised platforms to other clean, healthy platforms in a security incident to avoid further loss and to ensure the services are continuously provided to users. We present a holistic approach for service migration decision, strategy specification and scheduling arrangement. Our appr...