Piotr Nawrocki
                      Katedra Informatyki AGH

Provisioning of services in distributed systems with variable resources
availability configuration


The rise of systems utilizing wireless communications (mobile systems,
among others) has forced a new approach to the service provision
problem. Existing systems that offered access to distributed resources
did not meet all the requirements for systems operating in mobile
environments.

The project concerns the issue of architecture design that makes it
possible to provide services in distributed systems with variable
resource availability configuration. The layer model of the system
developed, comprising the locations of devices and services, the
activation of services and monitoring of the entire system, enabled the
design and implementation of a prototype application operating in a
variable resource availability configuration environment and enabling
the provision of services. The system, when implemented, enabled the
validation of the architecture designed and made it possible to carry
out appropriate environment performance tests for various test
scenarios, accounting for, inter alia, the complexity of the query
concerning the service, the simultaneous operation of multiple client
applications and the impact of dynamic service parameter notification on
the test environment.