This paper presents the information aggr egation methods enabling costand QoS-aware service deployment. It is expected that network management tools will require the network itself to participate in the service deployment task so as to adapt to heterogeneous networknodes cost, QoS, and capabilities. The aggregation methods are part of a set of hierarchically-distributed computations, for which ...

We add specifications of location-aware measurements to performance models in a compositional fashion, promoting precision in performance measurement design. Using immediate actions to send control signals between measurement components we are able to obtain more accurate measurements from our stochastic models without disturbing their structure. A software tool processes both the model and the...

In this paper we present a framework for managing QoS-aware applications in a dynamic, ad-hoc, distributed environment. This framework considers an available set of wireless/mobile and fixed nodes, which may temporally form groups in order to process a set of related services, and wherethere is the need to support different levels of service and different combinations of quality requirements. T...

The use of feedback control theory for performance guarantees in QoS-aware systems has gained much attention in recent years. In this paper, we investigate merging, within a single framework, the predictive power of queueing theory with the reactive power of feedback control to produce software systems with a superior ability to achieve QoS specifications in highly unpredictable environments. T...

patient satisfaction is one of the sensitive indicators in determining the effectiveness of service rendered in hospitals. the study focus on comparing the health care services of  two cardiology based corporate hospitals in hyderabad, andhra pradesh, india. the data for the study was collected through a questionnaire consisting of two sections. an attempt has been made to elicit the informatio...

Newly emerging ad hoc networking technology has enormous potential benefit for many missioncritical applications. However, providing adequate security required for the target applications presents many new challenges due to the unique nature of ad hoc environments. Complete decentralization and the absence of any support infrastructure in ad hoc environments effectively eliminates the possibili...

Designing of the composite services with desired quality is an interesting challenge in web service environments. In a QoS-aware web service composition, appropriate services with acceptable quality are selected among several functionequivalent candidate services. The selection is performed in such a way that creates a composition with optimal quality which can satisfy user’s constraints. In th...