This thesis is devoted to thermal-hydraulic design and rating of heat exchangers with the specialized commercial software HTRI. These heat exchangers are solved for real high-temperature applications, where the hot fluid is a flue gas with high temperature (above 500 °C). In the thesis is made a brief analysis of the conventional design of heat exchangers usable for high-temperature aplications, description of the basic relations, description and brief user manual of software HTRI. Further, work includes a comparative study of methods for calculation of pressure drop of the fluid at 180° elbows, as support analysis for solution of required applications characterized by low pressure drop of process fluids.

(in English): The main goal of diploma thesis is to describe the internet business specifics with focus of identifying the causes of success or failure of companies on the Internet. At the theoretical level in context of thesis is to characterize the influence of the Internet on business principles and give to the reader a complete picture of its impact on current business. Following the main aim of the theses will need a virtually explore the possibilities which offer 21st century in the integration of modern business tools that allows smoother access to corporate infomation and knowledge and If their effective optimatization is the key to a uccessful business on the internet. The contribution of this thesis is to evaluate the practical challenges for companies which brings continual development of information and communication technologies that can be used for support of decision making in selecting an appropriate combination of business tools.

[pt] Este estudo pretende analisar e discutir os principais dados sobre violência doméstica durante o primeiro ano de pandemia da Covid-19 e apresentar algumas respostas e iniciativas tecnológicas que foram aprimoradas e/ou criadas para atender as vítimas no Brasil. Com a propagação da Covid-19 em todo mundo no ano de 2020, medidas de isolamento social foram adotadas como importante estratégia para a redução do número de infectados pelo vírus. Ficar em casa, no entanto, virou sinônimo de insegurança para muitas mulheres, já que é no próprio domicílio onde ocorre grande parte dos casos de feminicídio no país. Um mês depois de a Organização Mundial de Saúde decretar a pandemia, o relatório Covid-19 e o Combate à Violência Contra Mulheres e Meninas (ONU Mulheres) já mostrava que o número de casos de violência doméstica tinha aumentado em vários lugares do mundo. Esse texto apresenta os principais aplicativos para celular, serviços de atendimentos online e outras ferramentas digitais, assim como aponta para a necessidade de iniciativas e políticas específicas, investimento e desenvolvimento em novas tecnologias para combater os casos de violência contra as mulheres. / [en] This dissertation aims to analyze and discuss the main data on domestic violence during the first year of coronavirus pandemic and present some answers and technological initiatives that were improved to assist victims in Brazil. With the spread of Covid-19 around the world during 2020, social isolation was adopted as an important strategy to reduce the number of people infected by the virus. However, staying home has become synonymous of insecurity for many women, as most of femicide cases happen at home. A month after the World Health Organization declares Covid-19 a pandemic, the report Covid-19 and Ending Violence Against Women and Girls (UN Women) already showed that the number of cases of domestic violence had increased in many parts of the world. This text presents mobile applications, online assistance services and other digital tools as points the need of specific initiatives and policies, investment, and development in new technologies to combat cases of violence against women.

Informetrics study the information flow as a pure information phenomenon. However what are the practical applications of this problem? Information flow can be understood, investigated and managed from different points of view. The most practical one is management approach combined with intuitive analogy. Water flow parallel appears suitable. A conceptual model can be propounded upon this foundation and then used for better illustration of information flow function and key parts. Finally, a good amount of instruments and management methods can be used to manage information flows. So in chosen organization the current state of information flows and contemporary methods of its management are investigated in order to compare the theory and the practice. Concrete suggestions and statements about information flow management are deduced afterwards This paper illustrate possibilities of usage of information flow management in practice. Keywords information flow management - methods of information flow management - information flow model - practical aplications - case study - analogy - induction - Regional research library in Liberec