Zusammenfassung Mit den am 11.2.2017 in Kraft getretenen wasserhaushaltsrechtlichen Regelungen, die das hydraulic fracturing – Fracking von unkonventionellen Lagerstätten verbieten, ist eine Einschränkung der damit verbundenen technologischen Möglichkeiten vorgenommen worden. Die Fracking-Technologie könnte einen Beitrag zur autonomen Energieversorgung leisten, insbesondere hinsichtlich Strateg...

Convexity theory and duality theory are important issues in math- ematical programming. Within the framework of credibility theory, this paper rst introduces the concept of convex fuzzy variables and some basic criteria. Furthermore, a convexity theorem for fuzzy chance constrained programming is proved by adding some convexity conditions on the objective and constraint functions. Finally,...

in this paper, a model of an optimal control problem with chance constraints is introduced. the parametersof the constraints are fuzzy, random or fuzzy random variables. todefuzzify the constraints, we consider possibility levels.  bychance-constrained programming the chance constraints are converted to crisp constraints which are neither fuzzy nor stochastic and then the resulting classical op...