An investigation of temporal dynamics of El Niño–Southern Oscillation (ENSO) and spatial patterns of dryness/wetness period over arid and semi-arid zones of Central Asia and their relationship with Normalized Difference Vegetation Index (NDVI) values (1982-2011) have explored in this article. For identifying periodical oscillations and their relationship with NDVI values have selected El Nino 3.4 index and thirty years of new generation bi-weekly NDVI 3g acquired by the Advanced Very High Resolution Radiometer (AVHRR) satellites time-series data. Based on identification ONI (Oceanic Nino Index) is a very strong El Nino (warm) anomalies observed during 1982-1983, 1997-1998 and very strong La Nino (cool) period events have observed 1988-1989 years. For correlation these two factors and seeking positive and negative trends it has extracted from NDVI time series data as “low productivity period” following years: 1982-1983, 1997 -1998; and as “high productivity period” following years: 1988 -1989. Linear regression observed warm events as moderate phase period selected between moderate El Nino (ME) and NDVI with following eriods:1986-1987; 1987-1988; 1991-1992; 2002-2003; 2009-2010; and moderate La Niña (ML) periods and NDVI (1998-1999; 1999-2000; 2007-2008) which has investigated a spatial patterns of wetness conditions. The results indicated that an inverse relationship between very strong El Nino and NDVI, decreased vegetation response with larger positive ONI value; and direct relationship between very strong La Niña and NDVI, increased vegetation response with smaller negative ONI value. Results assumed that significant impact of these anomalies influenced on vegetation productivity. These results will be a beneficial for efficient rangeland/grassland management and to propose drought periods for assessment and reducing quantity of flocks’ due to a lack of fodder biomass for surviving livestock flocks on upcoming years in rangelands. Also results demonstrate that a non-anthropogenic drivers of variability effected to land surface vegetation signals, nderstanding of which will be beneficial for efficient rangeland and agriculture management and establish ecosystem services in precipitation-driven drylands of Central Asia.

This thesis focuses on the Aeronet.cz website and the division of society into 'Us' and 'Them' in the context of the website. The thesis is divided into two parts - a theoretical one and a research one. The theoretical part aims to describe the background of the researched website and certain phenomena which are believed to be connected to the website. This part also includes a review of theoretical concepts pertaining to the connection of language and ideology. Furthermore, certain strategies utilized in group identity construction and division of society into differently evaluated segments are described. The research is conducted in the form of a semiotic analysis but incorporates certain elements of critical discourse analysis as well. The analysis has two main goals. The first goal is to describe the composition of 'Us' and 'Them' groups in the context of the portal, the second goal is to investigate which strategies of identity construction are employed to achieve such division. To support the findings, the thesis offers a detailed overview of individual entities and their evaluation. A description of strategies from all levels of the research, which were used to evaluate a certain entity, is also included. The discussion consists of synthesis of all the findings with respect to both...

This thesis aims to analyze the camping speeches of the two major candidates running for President of the Unites States in the 2020 general election and to inspect the ways in which both the candidates utilize the Us versus Them dichotomy. In doing so, the thesis provides a critique of the texts produced by the candidates and seeks to unveil their ideological motivation. As categorizing entities has a profound effect on the audience and their perception of reality, the goal is not only to unveil what entities the candidates discuss, but also to determine how they classify these entities. In addition, the strategies used by both the candidates to achieve entity evaluation are compared in order to contrast their rhetorical styles. The theoretical part of the thesis overviews concepts related to the construction of group identities and other ways of reproducing ideology in discourse. Furthermore, Hasan's approach to text analysis, which is employed in the analytical part, is introduced. A brief biography of both the candidates and a description of the US presidential election system are included as well. The analytical part is composed of Critical Discourse Analyses of selected topical segments from campaign speeches of Donald Trump and Joe Biden. Special focus is dedicated to the strategies the...

The thesis is focused on construction of Czech national identity in press (MF DNES January - June 2010). It describes this complex problem in the way of discourse analysis. Therefore, there is not used special or particular research method, because the subject of matter is approached and thought by ontological and epistemological assumptions behind it. The objective of the work is find system, which characterizes construction of Czech national identity, Czech patriotism and Czech character. There must be emphasized that it is not providing absolute answers to the specific problem, but enable us to understand the conditions behind it. First of all, there is shown thinking about Czech national identity from the historical point of view. There are described presumptions of Czech identity and character from the times of Karel Čapek and Tomáš G. Masaryk. Secondly, there is shown contemporary discourse through the study of different levels of the media text, the concepts of Teun van Dijk or Jack Lule are involved.

Sarajevo is a city in which, for centuries, people of different religions and ethnicities have lived together. But the war in the early 1990s partitioned the country into almost ethnically homogenous parts. The aim of this work is to find out, how young people between the ages of 18 - 29 years old perceive the identity of contemporary Sarajevo and to what extent they identify with the official narrative of Sarajevo as a multi-ethnic city. An online survey was conducted in March 2016 by a sample of 66 young Bosniaks, Bosnian Serbs, and Bosnian Croats. The research examines how they identify with the Sarajevan urban identity and the influential factors, such as ethnic categorization, religious beliefs, origin, or dominant information sources. To provide a deeper insight, the online survey was extended to include 15 in-depth interviews with young Sarajevans. There, the author uses a metaphor of a bridge to analyze the young Sarajevans' point of view regarding inter-ethnic relations and identity of their city. The outcome of the research is recognition that young Sarajevans often deny the ethnic categorization and perceive the every- day contact between different ethnic groups as non-problematic. As a consequence, the participants see Sarajevo as a unique city in the Bosnian context and typically distinguish...