A comprehensive economic analysis of solid oxide fuel cell (SOFC) systems is presented in this paper. The analyzed system consists of a desulphurization system, a pre-reforming reactor, a fuel cell stack, an afterburner, heat exchangers, a power converter, a control system, blowers, pumps, start-up heaters and piping. Since most of these components are still in the prototype or early commercial...

The Device Remote Monitoring System (DRMS) based on network is designed and implemented in order to integrate the decision making level, the monitoring level and the field level together effectively, whose architecture is the hierarchical control architecture including three layers: low-layer, mid-layer and upper-layer. The low-layer is the multimedia fieldbus system (MFS), the mid-layer is the...

Geographically distributed and time-phased ecological and socio-economical indices are treated as source data for the analysis, carried out for taking reasoned management decision. Analysis complexity, related to multi-dimensional data is overcome thanks to using group methods of data handling (GMDH). This work shows the results of Ukraine's regions cluster analysis by the totality of ecologica...

OBJECTIVE To investigate the factors associated to the physical inactivity among teenagers in Salvador, BA. METHODOLOGY A cross-sectional study was made with 803 teenagers from 10 to 14 years old, enrolled in public high schools in Salvador, BA. Information concerning physical activity levels (dependent variable), sedentary behavior, demographic, anthropometric, socioeconomic and maternal cha...