The YAWL Worklet Service is an effective approach to facilitating dynamic flexibility and exception handling in workflow processes. Recent additions to the Service extend its capabilities through a programming interface that provides easier access to rules storage and evaluation, and an event server that notifies listening servers and applications when exceptions are detected, which together se...

In this paper, we investigate the fuzzy logic based system characteristics of MX/G/1 retrial queuing system with Bernoulli vacation schedule. The service time and vacation time are assumed to be generally distributed. It is found in many practical situations that the queuing models with fuzzy parameters are much more realistic than the classical crisp parameters based queuing models. We have...

In order for service-oriented architectures (SOAs) to deliver their true value for the business, e.g. flexibility and transparency, a holistic service management needs to be set up in the enterprise. To perform all the service management tasks efficiently heavy support by automated processes and tools is necessary. This article describes a service description approach that is based on OWL-S (We...

agricultural extension is a client-oriented service the effectiveness and efficiency of which depends on the clientele’s satisfaction. extension agents’ performance is one of the indices of extension services' performance. extension agents’ performance has been assessed in different such ways as: study of their supervisors’ view points, study of agents’ themselves reports and as well study...

How to discover the Web Services which fit to the requesters’ needs from an increasingly large-scale services registry in a fast and accurately way is a key problem in Web Services research. Applying clustering method to improve service index structure in service registry is a feasible way to this problem. For the existing service clustering methods are time-consuming, only produce static and s...

the type of the applications for which internet is being used has changed over the years. multimedia applications, real-time applications and game playing require quality of service. ieee has proposed ieee 802.11e, a quality of service extension to the wireless lan standard ieee 802.11. in this paper service differentiation ability of 802.11e is evaluated. identical traffic is considered for al...

The price of Internet services is user information, and many pay it without hesitation. While myriad privacy tools exist that thwart the detailed compilation of information about user habits, these tools often assume that reduced functionality is always justified by increased privacy. In contrast, we propose the adoption of functional privacy as a guiding principle in the development of new pri...

Location problems have been the focus of considerable attention both in research and practice for many years. Numerous extensions have been described to broaden its appeal and enhance its applicability. This study proposes a spreadsheet approach for three well-known facility location problems, the p-median problem (PMP), capacitated p-median (CPMP), and maximal covering location problem (MCLP)....

Client-based user modelling has already been studied and clearly has its place among generic approaches to the user modelling. It is especially advantageous for lifelong user modelling as it can support the modelling in any time and any place including consideration of user privacy. Emergence of web browser extensions opens up possibilities of pure browser-based realisation of client-based user...

This paper presents an extension of the IMS software architecture using a service orientation, which provides flexibility of mobile service provisioning. The suggested extension facilitates composition of new mobile services in run-time based on the existing services and enables the end users to become mobile service providers. Moreover, it enables addition of new mobile services with plug-n-pl...