Multimedia Teleservices Modelled with the OSI Application Layer Structure

This paper looks into the communications capabilities that are required by distributed multimedia applications to achieve relation preserving information exchange. These capabilities are derived by analyzing the notion of information exchange and are embodied in communications functionalities. To emphasize the importance of the users' view, a top-down approach is applied. The (revised) OSI Application Layer Structure (OSI-ALS) is used to model the communications functionalities and to develop an architecture for composition of multimedia services with these functionalities. This work may therefore be considered an exercise to evaluate the suitability of OSI-ALS for composition of multimedia teleservices

Adding Policy-based Control to Mobile Hosts Switching between Streaming Proxies

We add a simple policy-based control component to mobile hosts that enables them to control the continuous reception of live multimedia content (e.g. a TV broadcast) while they switch between different distributors of that content. Policy-based control provides a flexible means to automate the switching behavior of mobile hosts. The policies react to changes in the mobile host's environment (e.g. when a hotspot network appears) and determine when and how to invoke an earlier developed application-level protocol to discover the capabilities (e.g. supported encodings) of the content distributors and to execute the switches. The design of the control component is based on the IETF policy model, but extended and applied at the application-level instead of at the network-level. We implemented the system and deployed it in a small-scale test bed

On the enterprise modelling of an educational information infrastructure

In this report, we present the outcomes of exercising a design trajectory in respect of the modelling of an educational information infrastructure. The\ud infrastructure aims to support the organisation of teaching and learning activities, independently of any particular didactic policy. The design trajectory focuses on capturing invariant structures of relations between entities in educational organisation into Enterprise object models that underlie the design of the intended educational infrastructure.\ud An early-developed prototype of the infrastructure has emphasised the need for an Educational Model Space to determine the modelling and problem domain context apriori to modelling. In this space, educational requirements have been elaborated towards the Open Distributed Processing (ODP) Enterprise Viewpoint object models expressed in terms of the Unified Modelling Language (UML).\ud Recursive structures have been used to capture the dynamic needs of education. Furthermore, these structures are uniform for the planning, performance and evaluation activities of education. The Enterprise models developed can be used to derive the Information Viewpoint models and to further optimise the prototype of the infrastructure. In this work, we have managed to fruitfully combine educational and computer science modelling inputs by using ODP and UML as a bridge for this interdisciplinary collaboration

Tele-education Process Modelling supported by the ODP Enterprise Viewpoint Language

This paper reports on applying the ODP enterprise viewpoint in the domain of tele-education. The work is conducted as part of a research activity that aims at designing a tele-education system to support planning, execution and evaluation of dynamic distributed educational processes. We explore the ODP enterprise viewpoint as a basis for communication and co-operation between educational scientists and ODP systems designers involved in the design process. Our application of the enterprise viewpoint involves four main steps. First, an educational language is proposed to describe educational processes in generic terms. Second, a set of appropriate enterprise language concepts is selected. Third, a relationship is established between the educational language and enterprise language concepts. Fourth, an educational process is modelled in terms of an entity-oriented model and a behaviour-oriented model. It is hoped that the experience gained in this exercise will provide useful feedback to both the educational and ODP communitie

Mobile Health Care over 3G Networks: the MobiHealth Pilot System and Service

Health care is one of the most prominent areas for the application of wireless technologies. New services and applications are today under research and development targeting different areas of health care, from high risk and chronic patients’ remote monitoring to mobility tools for the medical personnel. In this direction the MobiHealth project developed and trailed a system and a service that is using UMTS for the continuous monitoring and transmission of vital signals, like Pulse Oximeter sensor , temperature, Marker, Respiratory band, motion/activity detector etc., to the hospital. The system, based on the concept of the Body Area Network, is highly customisable, allowing sensors to be seamlessly connected and transmit the monitored vital signal measurements. The system and service was trialed in 4 European countries and it is presently under market validation

PERFORMANCE EVALUATION OF INDONESIAN LOCAL GOVENMENT WEBSITE ANALYSIS OF WEB CONTENT, TRAFFIC

Digital divide in the parameter occurrence of inbound links, a webpage or document richness, and web traffic on web governments in Java Out Java. Local web government have affected by the popularity of the web document richness not by inbound links, traffic or information richness

A Framework for Smart Distribution of Bio-signal Processing Units in M-Health

This paper introduces the Bio-Signal Processing Unit (BSPU) as a functional component that hosts (part of ) the bio-signal information processing algorithms that are needed for an m-health application. With our approach, the BSPUs can be dynamically assigned to available nodes between the bio-signal source and the application to optimize the use of computation and communication resources. The main contributions of this paper are: (1) it presents the supporting architecture (e.g. components and interfaces) and the mechanism (sequence of interactions) for BSPU distribution; (2) it proposes a coordination mechanism to ensure the correctness of the BSPU distribution; (3) it elaborates the design of smooth transition during BSPU distribution in order to minimize the disturbance to the m-health streaming application