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CENIA, česká informační agentura životního prostředí, jež v ČR administruje program EMAS, se stala partnerem projektu ENHANCE (EMAS as a Nest to Help And Nurture the Circular Economy) na podporu a rozšíření programu EMAS (Eco Management and Audit Scheme). Cílem projektu je odvrátit evropský negativní trend klesajícího zájmu organizací o registraci v programu EMAS. Hlavním výstupem pro ČR bude vytvoření Národního akčního plánu pro EMAS.

In this thesis, we are interested in rules of coexistence among homeless persons in Prague. At first, we will generally describe the emergence of order in society then we will focus on informal institutions and various ways how to enforce them. Subsequently, we will turn our attention to the topic of homelessness. We will provide a definition of homelessness suitable for our purposes and describe functioning of informal social networks that emerged among homeless people in different parts of the world. This will lead us to the empirical part of the thesis, which is based on unstructured interviews and results in description of ob- served regularities and enforcement mechanisms connected to them. For some of those regularities, we will use game theoretical approach to explain how did they emerge and how are they sustained. Keywords: homelessness, informal institutions, institutional analysis, game theory, private enforcement Author's e-mail: matej.ehrlich@gmail.com Supervisor's e-mail: jiri.schwarz@gmail.com

The Nobel Prize in Physiology or Medicine in 1908 was awarded to Ilya I. Mechnikov and Paul Ehrlich for recognition of their work on immunity. Mechnikov have discovered phagocytes and phagocytosis as the basis of natural cellular immunity. His ,,phagocytic theory" is the principle of immunological concept "self and not self" as the prerequisition of physiological inflammation, and selfmaintaining of organism. Ehrlich developed the methods for standardization of antibody activity in immune sera, described neutralizing and complement-depending effect of antibodies and enunciated the ,"ide-chain" theory of the formation of antibodies. Their concept of the key-stone of immunity was different, but they expressed the basic paradigma of immunology: immunity imply the protection of identity and guarantee the integrity of organism. Both are the founders of immunology as the scientific discipline. Discoveries and conceptions of I. Mechnikov and P. Ehrlich exceedingly influenced development of immunology and are also applicable, instructive and suggestive in contemporary immunology and microbiology.