This work deals with the use of a centrifugal pump in turbine mode and control of the system where this machine is operated. The introduction describes and divides the various types of pumps and discusses the issue of Euler's pump and turbine equations. The flow control options are also described here. Part of the work is a research that examines the advantages and disadvantages of using a centrifugal pump in turbine mode, the possibilities of using this system and real applications in the Czech Republic and in the world. The main part is the design of a mathematical model in Microsoft Excel, which solves the regulation of the piping system with a pump operating in turbine mode, especially out of the optimal operating parameters.

This thesis dealing with description and of autonomous solar systems and algorithms for control of decision-making mechanism. Optimal set of these machanism has effeect in raise of efficiency in hole autonomous system. In practical purposes propose create one by using microprocesor ATMEGA8, which measure all electrical data in system and control all decisions of implemented algorithm.

Primary aim of this thesis is to describe the effects of direct elections on the nature of the political regime in the Czech Republic. Specifically, author focus on the distinctive attributes of various forms of government, which are then applied to the current state regime in the Czech Republic after the introduction of direct presidential elections and whether it effectively means a transition from parliamentary to semi-presidential regime. Historical analysis of the presidential office in the Czech countries describes the phenomenon of its extraordinary role and respectability, which is reflected in the contemporary political realities and have a major influence on the functioning of the state. Theoretical analysis deals with impacts introduction of the direct presidential election had on the constitutional order of the Czech Republic and disproves various arguments, which once lead to its legislative implementation. Using a descriptive analysis of the behaviour of the first directly elected president Miloš Zeman, author tries to unveil actual jurisdictional disputes between him and other elements of power. The result is a detailed description of the existing cooperation between individual people and institutions of power within the regime and its final character assessment accompanied by...