Ivan Havel remembers when in the late 1970s the Czechoslovakian state police began watching his apartment. For months he had been hosting unofficial science seminars, and the police didn't like it. "It politicized me, says the soft-spoken computer scientist and brother of Czechoslovakian president Vaclav Havel. "The police would check the people who came and ask them to identify 'themselves. Th...

Water quantity and quality joint operation is a new mode in the present dams' operation research. It has become a hot topic in governmental efforts toward integrated basin improvement. This paper coupled a water quantity and quality joint operation model (QCmode) and genetic algorithm with Soil and Water Assessment Tool (SWAT). Together, these tools were used to explore a reasonable operation o...

3 0 Introduction 3 Part I 1 Formulation of the various systems 7 2 Theorems of various systems 13 On ReS and finite sets 13 Proof that HF models ZF – Infinity 16 On GJ and the class of rudimentary functions 20 Companions and the Gandy–Jensen Lemma 21 A single generating function for rud(u) 22 Other remarks on GJ 23 On fReR 25 On ReRI 26 On KP 27 3 Remarks on transitive models 27 4 Models of ReS...

riparian vegetation is a component of river system that performs certain basic functions including primary vegetative production, protecting stream banks from erosion, trapping sediments, promoting water quality, wildlife habitat and fisheris, forage for livestock, etc. in this research, spatio-temporal change of vegetation riparian area of aghbolagh-river as an upstream of karoon-river for 65-...