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The immense public interest in Internet multimedia, and particularly World Wide Web applications, has also triggered a lot of research towards better understanding of networking requirements of such applications. In this paper, we propose a Petri net model that addresses traffic generation paiterns of Internetbased real-time block-transfer applications. The proposed model is based on Web's native HyperText Transport Protocol, and consists of three modules: client, server, and real channel. The model flexibility is achieved through adjustable system parameters. Formal validation results demonstrate the corectness of the proposed model.

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In order to better align existing and future ICT implementations in the health domain with the strategic options defined by the National Plan for Health Development, the Ministry of Health (MoH) of Burundi initiated in 2014 the development of a national e-health enterprise architecture based on the TOGAF methodology. A first part of the development cycle consisted of a detailed analysis of regulatory documents and strategic plans related to the Burundian health system. In a second part, semi-structured interviews were organized with a representative sample of relevant MoH health structures. The study demonstrated the donor driven unequal distribution of hardware equipment over health administration components and health facilities. Internet connectivity remains problematic and few health oriented business applications found their way to the Burundian health system. Paper based instruments remain predominant in Burundi's health administration. The study also identified a series of problems introduced by the uncoordinated development of health ICT in Burundi such as the lack of standardization, data security risks, varying data quality, inadequate ICT infrastructures, an unregulated e-health sector and insufficient human capacity. The results confirm the challenging situation of the Burundian health information system but they also expose a number of bright spots that provide hope for the future: a political will to reclaim MoH leadership in the health information management domain, the readiness to develop e-health education and training programs and the opportunity to capitalize the experiences with DHIS2 deployment, results based financing monitoring and hospital information management systems implementation.

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