Global ETD Search

31	Transformace optimalizačních modelů s aplikacemi / Transformations of optimization models with aplications Rychtář, Adam January 2016 (has links) The thesis deals with recent problems of waste management in the Czech Republic. In connection with the existing software implementation, the author focuses on the gradual development of advanced mathematical programming models, which generalize existing approaches. The author applies acquired knowledge in the areas of network flows, linear, integer, and stochastic programming. The important role is played by modifications and transformations of the discussed models. They are further used to obtain the experimental results for real-world input data by implementation in GAMS.
32	The Behavioral Ecology of Walleye (<i>Sander vitreus</i>): Phenotypic and Environmental Variation Influence Reproductive Behaviors and Exploitation Bade, Andrew P. January 2021 (has links) No description available. Aquatic Sciences Ecology Freshwater Ecology Natural Resource Management Wildlife Management Walleye acoustic telemetry fisheries spawning angler behaviors GAMs GLMMs SCAA ecology fisheries management philopatry phenology angler surveys animal behavior
33	Optimization of production allocation under price uncertainty : relating price model assumptions to decisions Bukhari, Abdulwahab Abdullatif 05 October 2011 (has links) Allocating production volumes across a portfolio of producing assets is a complex optimization problem. Each producing asset possesses different technical attributes (e.g. crude type), facility constraints, and costs. In addition, there are corporate objectives and constraints (e.g. contract delivery requirements). While complex, such a problem can be specified and solved using conventional deterministic optimization methods. However, there is often uncertainty in many of the inputs, and in these cases the appropriate approach is neither obvious nor straightforward. One of the major uncertainties in the oil and gas industry is the commodity price assumption(s). This paper investigates this problem in three major sections: (1) We specify an integrated stochastic optimization model that solves for the optimal production allocation for a portfolio of producing assets when there is uncertainty in commodity prices, (2) We then compare the solutions that result when different price models are used, and (3) We perform a value of information analysis to estimate the value of more accurate price models. The results show that the optimum production allocation is a function of the price model assumptions. However, the differences between models are minor, and thus the value of choosing the “correct” price model, or similarly of estimating a more accurate model, is small. This work falls in the emerging research area of decision-oriented assessments of information value. / text Oil price model Geometric Brownian Motion Mean Reversion with jumps Stochastic process Decision analysis Risk analysis Value of information VOI Optimization Uncertainty Portfolio optimization Crude type Optimization under uncertainty Risk solver platform Gams Linear programming Non-linear programming Operations research Risk Oil industry Petroleum management
34	Pokročilá optimalizace toků v sítích / Advanced Optimization of Network Flows Cabalka, Matouš January 2018 (has links) The master’s thesis focuses on the optimization models in logistics with emphasis on the network interdiction problem. The brief introduction is followed by two overview chapters - graph theory and mathematical programming. Important definitions strongly related to network interdiction problems are introduced in the chapter named Basic concepts of graph theory. Necessary theorems used for solving problems are following the definitions. Next chapter named Introduction to mathematical programming firstly contains concepts from linear programming. Definitions and theorems are chosen with respect to the following maximum flow problem and the derived dual problem. Concepts of stochastic optimization follow. In the fifth chapter, we discuss deterministic models of the network interdiction. Stochastic models of the network interdiction follow in the next chapter. All models are implemented in programmes written in the programming language GAMS, the codes are attached.
35	Development of a Reservoir System Operation Model for Water Sustainability in the Yaqui River Basin Mounir, Adil 05 July 2018 (has links) No description available. Civil Engineering Agricultural Economics Agricultural Engineering Atmospheric Sciences Atmosphere Computer Science Environmental Science Hydrologic Sciences Hydrology Operations Research Water Resource Management Sustainability Environmental Engineering Engineering sustainability nonlinear programming optimization hydrologic simulation reservoir system GAMS HEC-HMS reservoir operation Yaqui River Basin Python water resources remote sensing NLDAS bias correction water allocation hydrology water

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