H2-powered aviation at airports – Design and economics of LH2 refueling systems

langauge needs analysis of undergraduate business management and economics students

the aim of conducting this study was to investigate the foreign language learning needs of undergraduate economics students and business management students in faculties of social sciences of alzahra and azad naragh university. in the study, which was designed on the basis of a qualitative-quantitative basis using interviews and questionnaires, 146 female undergraduate business management as we...

switching h2/h∞ controller design for linear singular perturbation systems

this paper undertakes the synthesis of a logic-based switching h2/h∞ state-feedback controller for continuous-time lti singular perturbation systems. our solution achieves a minimum bound on the h2 performance level, while also satisfying the h∞ performance requirements. the proposed hybrid control scheme is based on a fuzzy supervisor managing the combination of two controllers. a convex lmi-b...

Critique of Research Books (Art)/ The Art Economics of Art: A Look at Contemporary Art Economics; Markets, Strategies, and the Star-making Systems, Marzieh Eftekhari

Robust H2 switching gain-scheduled controller design for switched uncertain LPV systems

In this article, a new approach is proposed to design robust switching gain-scheduled dynamic output feedback control for switched uncertain continuous-time linear parameter varying (LPV) systems. The proposed robust switching gain-scheduled controllers are robustly designed so that the stability and H2-gain performance of the switched closed-loop uncertain LPV system can be guaranteed even und...

Economics and Environmentalism: Belief Systems at Odds

E conomics and environmentalism are belief systems that shape their adherents’ way of thinking about the world. We might just as accurately characterize them as secular religions, which most theologians count as real religions (see, for example, Tillich 1963), but many people prefer to regard them as competing belief systems. Many (not all) economists and environmentalists thus function in the ...