No description available.

The field of image synthesis has seen significant progress recently, including great strides with generative models like Generative Adversarial Networks (GANs), Diffusion Models, and Transformers. These models have shown they can create high-quality images from a variety of text prompts. However, a comprehensive analysis that examines both their performance and possible biases is often missing from existing research. In this thesis, I undertake a thorough examination of several leading text-to-image models, namely Stable Diffusion, DALL-E Mini, Lafite, and Ernie-ViLG. I assess their performance in generating accurate images of human faces, groups, and specified numbers of objects, using both Frechet Inception Distance (FID) scores and R-precision as my evaluation metrics. Moreover, I uncover inherent gender or social biases these models may possess. My research reveals a noticeable bias in these models, which show a tendency towards generating images of white males, thus under-representing minorities in their output of human faces. This finding contributes to the broader dialogue on ethics in AI and sets the stage for further research aimed at developing more equitable AI systems. Furthermore, based on the metrics I used for evaluation, the Stable Diffusion model outperforms the others in generating images from text prompts. This information could be particularly useful for researchers and practitioners trying to choose the most effective model for their future projects. To facilitate further research in this field, I have made my findings, the related data, and the source code publicly available. / Master of Science / In my research, I explored how cutting-edge computer models, namely Stable Diffusion, DALL-E Mini, Lafite, and Ernie-ViLG, can create images from text descriptions, a process that holds exciting possibilities for the future. However, these technologies aren't without their challenges. An important finding from my study is that these models exhibit bias, e.g., they often generate images of white males more than they do of other races and genders. This suggests they're not representing our diverse society fairly. Among these models, Stable Diffusion outperforms the others at creating images from text prompts, which is valuable information for anyone choosing a model for their projects. To help others learn from my work and build upon it, I've made all my data, findings, and the code I used in this study publicly available. By sharing this work, I hope to contribute to improving this technology, making it even better and fairer for everyone in the future.

當今中國大陸移動遊戲產業競爭激烈，資本投入巨大，顧客維繫率低。導致遊戲研發商在遊戲開發資源配置上面臨困擾。本文根據遊戲分析理論，從遊戲產品的各個屬性滿意度對玩家長期體驗遊戲意願的影響重要程度進行量化分析和質性研究。結論是，對於全體玩家而言，提高玩家的長期體驗意願的最關鍵因素是遊戲的戰鬥設計部分是否獲得顧客很高的滿意度。 / The Chinese mobile game industry is highly competitive, features large capital investment, and low customer retention rate. Game developers are facing various problems regarding the deployment of capital investment in game developing activities. This article conducts quantitative and quantitative research on the influence of each product attribute on increasing the retention intention based on theory of games. We conclude that the element of battle design is the key factor raising customer retention intention when playing games.

L'objectif de cette recherche est d'évaluer la communication environnementale (CE) des entreprises tunisiennes et marocaines et de déterminer les facteurs susceptibles de la favoriser ou de la contraindre. En se basant sur la théorie des parties prenantes, nous empruntons le modèle conceptuel d'Ullmann (1985) pour tester l'effet du pouvoir des parties prenantes, de la culture d'entreprise, de la situation économique et financière de l'organisation sur l'étendue de la CE. L'échantillon de l'étude est composé de 18 entreprises tunisiennes et de 20 entreprises marocaines cotées respectivement sur les bourses de Tunis et de Casablanca. L'évaluation de l'étendue de la CE est faite sur la base des rapports annuels collectés sur la période allant de 2000 à 2007. Les résultats de l'analyse quantitative montrent que la CE est principalement orientée vers les actionnaires et les investisseurs. En outre, l'influence de la culture d'entreprise, de la situation économique et financière de l'entreprise, du secteur d'activité, de la taille ainsi que du pays d'origine est confirmée. Dans le but d'approfondir ces résultats, une analyse qualitative est conduite sur 10 cas d'entreprises retenus de l'échantillon initial. Les résultats révèlent que le niveau d'internationalisation de l'activité de l'entreprise, son appartenance à une multinationale réputée par son engagement dans le développement durable, la taille de l'auditeur ainsi que la composition du Conseil d'Administration expliquent l'étendue de la CE des entreprises tunisiennes et marocaines. / The purpose of this research is to assess the corporate environmental reporting (CER) of Tunisian and Moroccan companies and to determine the factors likely to support it or constrain it. Relying on the stakeholder theory, we use the conceptual model of Ullmann (1985) to test the effect of the stakeholder power, corporate culture and the economic and financial performances on the extent of the CER. The sample comprises 18 Tunisian and 20 Moroccan companies listed respectively on Tunisian and Moroccan stock exchanges markets. The evaluation of the extent of CER is made on the basis of annual reports collected over the period from 2000 to 2007. The results of the quantitative analysis show that CER is made mainly to shareholders and investors. The influence of corporate culture, economic and financial performances, company's industry, size and country's origin is confirmed. Furthermore, a qualitative analysis is conducted on 10 companies selected from the initial sample. The results reveal that the company's level of internationalization, being a subsidiary of multinational renowned for its commitment to sustainable development, the size of the auditor and the composition of the Board explain the extent of the CER of Tunisian and Moroccan companies.

The diploma thesis "Media Image of Lobbying" focuses on the issue of the media image of lobbying and lobbyists in the newspapers Mladá fronta Dnes and Právo in the year 2008. Lobbying is an activity which the majority of population experiences through the media only. The media may thus greatly influence the way the public perceives and evaluates lobbying. In the first part of the diploma thesis the question of the media presentation of reality are introduced and the factors which influence the form of the media content are outlined. The paper further deals briefly with the effect the media have on the population and with the agenda-setting concept. Then the definition of lobbying is given, as well as the reasons and conditions for its positive and negative reputation. Positive and negative functions of lobbying are pointed out and various types and forms of lobbying are presented including indirect lobbying, which is associated with PR activities. In the research part of the paper the results of the quantitative research are presented. The aim of this research was to discover the most frequent types of lobbying and lobbyists in the newspapers studied. The qualitative frame analysis then shows the ways in which lobbying and lobbyists are presented in the media. The appendix to the paper contains a codebook...

Title: Characteristics of team game performance and their comparison in youth teams in Lithuania and Czech republic Aims: The main goal of my thesis is a comparison of selected indicators of team game performance of both teams accompanied by a possibility to record the frequency of combinations based on setting screens, finding the most significant differences in indicators of both teams and determine the reasons for these differences. Methods: Using quantitative (numerical) observations of selected indicators supplemented by the game to record the accompanied by a possibility to record the frequency of combinations based on setting screens to determine differences in the team game performance of U14 teams in Lithuania and the Republic. Results: Acquired selected statistical indicators have shown the most significant phenomena of the game performance of youth teams in Lithuania and the Czech republic and the differences between them. Key words: Team game performance, offensive combinations based on setting screens, statisticals indicators, youth basketball, quantitative analysis.

Diploma thesis focuses on media reflection of negative Czech parliamentary election campaign in 2002, 2006 and 2010. The main goal of this thesis is to find out, whether media did reflect at the time the use of negative political marketing by Czech political parties in the way Czech political scientists describe it. Theoretical part explains the principles of political marketing and characterises parliamentary election campaign in 2002, 2006 and 2010. Empirical part gathers results of quantitative content analysis that were made for each pre- election period 13 weeks before elections in Hospodářské noviny, Lidové noviny and Mladá fronta DNES. The results of quantitative analysis did not confirm the hypothesis that those researched newspapers would in the period of 13 weeks before election reflect higher use of negative political marketing.

This diploma thesis concentrates on the media coverage of Vietnam in 2012, particularly in four Czech newspapers. Applying qualitative and quantitative method, it analyzes 358 articles, which appeared throughout the selected newspapers in 2012. This paper is divided into two parts, a theoretical and a practical one. The theoretical part describes Vietnam in the 20th century, the history of Czech-Vietnamese relations as well as the main media concepts that help to create a media image. The practical part of the quantitative method answers the research questions, which have been put forward at the beginning of the research. The data, such as the frequency of the topic during the year, topics that are usually connected with Vietnam, occurrence of the word Vietnam in headline and the amount of articles in which Vietnam is the main topic will be depicted using graphs and tables. The results of the qualitative analysis will then show, which characteristics are attributed to Vietnam in Czech daily press.

The diploma thesis on the "Media representation of forming of local policy (on the example of the financing of the Prague theatres)" suggests that mass media contribute to the forming of local policy by selective reporting of the politics. This fact is illustrated on the example of forming grant policy of the capital city of Prague. The analysed media are the daily papers MF Dnes, Lidové noviny, Právo and the televisions TV Nova and Česká televize in 2007 and 2008. The theoretical part of the diploma thesis introduces the relation between mass media and reality, the effects of media and the factors influencing forming of the news content. The political communication is discussed; this phenomenon is introduced together with the personalisation of politics and the mediatisation. Furthermore the paper deals with the agenda- setting theory and its relation to framing theory and the theory of news values. Then the development of the dispute is given, the most important moments are emphasized. The research part of the diploma thesis includes results of the quantitative content analysis. The aim of this research was to discover the media image of the dispute and to confirm or to disprove the hypothesis (i.e. the mass media were not impartial). The qualitative frame analysis shows the ways the dispute was...

The aim of this diploma thesis Analysis of Rosh chodesh (1990-2015) is to analyze the Jewish monthly magazine Rosh chodesh in the specific period of 1990-2015, and make a comparison with another Jewish magazine Maskil. The theoretical part provides general information about the Jewish media and life in the First Czechoslovak Republic, the Second World War and the Communist era. The practical part of my thesis brings the detailed description of the journal's history, purpose, graphic design, columns, journalist committee, authors, distribution and the way of financing. Quantitative analysis of the Rosh chodesh and Maskil gives an insight into the development of both periodicals during 2005-2015 in comparison with the previously conducted research. The changes in the composition, structure and the editing system are captured. More than 1 504 coding units were the subject to detailed analysis. Moreover, there is also the general research dealing with the Czech Jewish Media and selected international media together with a concise content analysis