This Master thesis solves a construction development of alternative modular mechanical systems for ventilation turbines. A research part of the thesis deals with the issues of transported medium (air) and ventilation, as well as functions, designs of ventilation turbines, and finally it provides an overview of ventilation turbines produced by manufacturers worldwide; these are used for ventilation of residential, commercial, industrial or agricultural structures using the natural or hybrid ventilation. A construction - design part is focused on creating 3D models of selected alternative modular adjustable ventilation turbines according to the data provided by the thesis supervisor and then on establishing a system for calculating the shapes of blades relative to the airflow for additional axial fan of ventilation turbines. For this purpose, a customized software application VENTILATOR (GUI) was developed to allow a flexible change of input calculation parameters and thus a fast modification of the curve shape in the 3D model of the axial fan blade.

The diploma thesis aims to prepare a study of the cooling system of a multifunctional building with regard to climate change predicted until the middle of the 21st century. The work includes determining the heat load of refrigerated rooms and designing measures to reduce heat gains in the summer. Diploma thesis includes design of a cooling system with fan-coil units as end appliances with the necessary hydraulic calculations. A single-stage absorption cooling unit is used as the considered cooling source, to which a free cooling heat exchanger is assigned. The design of the cooling source includes the necessary hydraulic calculations and dimensioning of the system ensuring its functional operation. Part of the diploma thesis is drawing documentation of cooling technology and connection of fan-coil units.

Topic of this Master's thesis is CFD simulations of indoor environment in a pharmacy building. CFD simulation have been done for summer and winter season for two scenarios of HVAC system. Results of simulations are visualized and evaluated.

This student thesis deals with a problem of manufacturing and competition ability of the joint stock company ZVVZ in the range of its manufacturing program - radial fans. The thesis compares the present and the innovated type of small radial fans from the view of manufacturing technology and manufacturing costs. The study comes out the technological documentation and demand forecast of future market. Finally the thesis summaries conditions which are necessary for the successful entrance of the innovated type of radial fans into the manufacturing process.

This master's thesis deals with construction concept, execution and final evaluation of the stress-strain analysis of the main parts of the coal crushing fan mill. The main thesis part describes the general issue and different types of coal crushing fan mill. Construction part of the thesis is focused on optimal design evaluation and strength analysis of spiral body case as well as fan mill beater wheel.

This Thesis deals with the fans, their properties and characteristics. The Project part is about design of the HVAC equipment in the centralised and decentralised option for the assigned building. The Project part is focused on the design and evaluation of the fans more specifically. The Experimental part is about measurement of parameters and characteristics of the fans. The results are analyzed and compared. The results are compared with current energy efficiency reguirements for fans.

Near-field Acoustical Holography is a tool that is conventionally used to visualize sound fields through an inverse process in a three-dimensional space so that either sound field projections or sound source localization can be performed. The visualization is conducted by using sound pressure measurements taken in the near-field region close to the surface of the unknown sound source. Traditional Fourier-based Near-field Acoustical Holography requires a large number of measurement inputs to avoid spatial truncation effects. However, the use of a large number of measurements is usually not feasible since having a large number of microphones is costly, and usually the array is limited in size by the physical environment, thus limiting the practicality of this method. In the present work, because of the desire to reduce the number of microphones required to conduct acoustical holography, a method known as Statistically Optimized Near-field Acoustical Holography initially proposed by Steiner and Hald was analyzed. The main difference between the present work and the concept mentioned by Steiner and Hald is the cylindrical coordinate system employed here for the purpose of experimenting on a bladeless fan, which resembles a cylindrical structure and which could be assumed to be a cylindrical source. The algorithm was first verified <i>via</i> simulations and measurements, and was then applied to experimental data obtained <i>via</i> pressure measurements made with a cylindrical microphone array. Finally, suggestions for noise control strategies for the bladeless fan are described, based on the measurement results.<br>

Chinese college students' 1993 perceptions of gains in achievement as a result of informal student-faculty relations outside the classroom were investigated at Liaoning Normal College of Foreign Language in Liaoyang, China. This study included assessment of pre-enrollment demographics and analyzed perceived gains due to student-faculty informal contact in the areas of academic achievement, intellectual achievement, and personal development.

Why do supporters to ice hockey teams in Sweden engages with their team on Twitter? The Swedish Hockey League season 2020/2021 was different than the previous ones in the league history. The COVID-19 pandemic forced the league to play games without any spectators. This study aims to understand why fans, to the teams who came in 13th and 14th in the league table during the season, engages with the teams Twitter accounts. The study will do that with the help of uses and gratifications theory, agenda setting theory and priming theory. The method used in the study was to check tweets from the teams during a specific time period and code the tweets to get a result and find a conclusion. The result showed that fans to the two teams engages with the teams Twitter accounts when they either win or lose games. The conclusion showed that fan engagement was mostly driven by results.

This thesis deals with slash fanfiction and yaoi manga, disparate yet similar phenomena of fan culture. Yaoi manga as genre of Japanese comics created by women and dedicated to women , and slash fanfiction as women's reaction to pop culture generally made by male authors, are both genres dealing with a romantic relationship between two men characters. This relationship is portrayed as an innocent romantic story as well as a hardcore pornography. The autor aims to describe the terms and inctroduce some of the most influential approaches to research of the topic. Author is interested in the issue in the way of cultural and gender approach. Cultural perspective provides a summary of approaches of Frankfurt and Birmingham schools, clarifys point of view of Abercrombie and Longhurst and other authors on the current and future trends in development of audiences. Mapping the internet, important space for the fan communitiy, is also a part of this paper. Gender perspective provides a description of the points of view on the women's status in popular culture, explains the motivation of the readers/authors related to the issue of homosexuality, and describes opinions of different feminisms about pornography. Research among fangirls and fanboys or authors of slash fanfiction and yaoi manga is included.