National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Economics of Skill Formation
Supik, Lukáš ; Münich, Daniel (advisor) ; Zacchia, Paolo (referee)
vii Abstract People are by nature social beings. Most of us have a complex social network that connects us with other people in numerous aspects of our lives: neighbours, co-workers or peers in schools, and friends. Moreover, it is widely believed that people's behaviour is to some extent affected by others in their social networks, which is known as peer effects. Therefore, a precise understanding of the behaviour of an individual necessarily includes understanding her interactions with others within her social network. The first part of this thesis, literature review, summarizes contemporary research on peer effects, shows which aspects of human behaviour may be affected by social interactions, and highlights the importance of peer effects research. In the second part, the estimation of the linear- in-means peer effects model, we provide a detailed description of the model, derivations of its alternative formulations, and show the identification conditions. The main contribution of the second part is that we provide a step-by-step analysis of the linear-in-means peer effects model and detailed proofs of theorems in one place. The third part provides an empirical analysis of peer effects in education in the Czech Republic. In particular, we examine how the test scores of pupils are affected by their...
Preparation and characterization of platinum-based bimetallic catalysts for fuel cells
Supik, Lukáš ; Khalakhan, Ivan (advisor) ; Kúš, Peter (referee)
1 Abstract The main sources of energy in the world are unrenewable sources. However, its reserves should last for next few tens of years and it is necessary to substitute them with alternative sources. Fuel cells are one of the most promising alternative sources of clean energy because they convert the chemical energy of hydrogen into electrical energy with the only byproduct pure water. There exist a wide range of fuel cells and the most important type is the fuel cell with a polymer membrane because it is suitable for mobile applications. One of the main problems of fuel cells is their price. Platinum catalyst enables chemical reactions and the necessity of platinum rises its price. Nowadays, the most promising strategy for overcoming this obstacle is doping platinum with other metals. Bimetallic platinum alloys increase the catalyst's activity and simultaneously decrease its price. This thesis is focused on investigation of catalyst for fuel cell made of platinum- nickel alloy. The catalyst was prepared by magnetron sputtering technique and then its other properties were measured with respect to the amount of platinum and nickel. The goal of this thesis is to study the link between chemical composition and activity of bimetallic layers.

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