Kari Luostarinen

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Access to information systems across corporate boundaries with high demands to privacy and trust result into ambitious research and development targets. This study provides motivation and a roadmap for approaching integrated security management solutions in a business network of partners with heterogeneous ICT and security infrastructures. We aim at(More)
We describe a multilayer perceptron model to predict the laboratory measurements of paper quality using the instantaneous state of the papermaking production process. Actual industrial data from a pilot paper machine was used. The final model met its goal accuracy 95.7% of the time at best (tensile index quality) and 66.7% at worst (beta formation). We(More)
This paper presents a packet scheduling scheme for ensuring delay and bandwidth as a quality of service (QoS) requirement. For customers, rightful service is given while optimizing revenue of the network service provider. A gradient and fixed point type algorithms for updating the weights of a packet scheduler are derived from a revenue-based optimization(More)
SUMMARY This paper proposes a scheduling model for ensuring delay as a Quality of Service requirement in the communications network. Different delays are allocated for different pricing classes, say gold, silver, and bronze classes. Our purpose is to minimize weighted mean delay for connections, where weights are the pricing factors of different classes. An(More)
— IEEE 802.16 standard defines the wireless broadband technology called WiMAX. When compared to other wireless technologies, it introduces many interesting advantages at physical (PHY) and media access control (MAC) layers. The WiMAX technology based on air interface standard 802.16 wireless metropolitan area network (MAN) is configured in the same way as a(More)
Remote controlling of industrial systems requires a special approach. There are requirements for both the connection and the access terminals. The connection should provide users with reliability, security and quality, and the access terminals should be able to perform the required task. One important and at the same time a problematic requirement for a(More)