National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Interactive clustering approaches in single-cell cytometry
Urban, Nicole Aemilia ; Šmelko, Adam (advisor) ; Stuchlý, Jan (referee)
Flow cytometry allows inexpensive monitoring of large and diverse cell populations using fluorescent markers, providing immense applications in studying biological properties of blood and tissues as well as diagnostics in the clinical setting. Recent methodological advances highlight automatic clustering as a tool of choice for data analysis, and many clustering algo- rithms were developed for various use cases. However, the applicability of such algorithms in biology and medicine remains challenging unless the tools expose user-friendly, interactive interfaces that are accessible to domain ex- perts. The goal of the thesis is to review the available methods that allow such interaction and supervision of the clustering process by the user, specif- ically focusing on interfaces desirable in clinical setting that does not require the user to interact with programming environments. As the main practi- cal result, the thesis should design a new tool that builds upon previously developed methodology (iDendro, gMHCA), allowing the application of the researched methodology on real datasets. By using proper data visualization techniques, the end user should be able to interact with the dataset in a way that is both intuitive and useful for producing biologically relevant results.
Liquids and substances used in electronic delivery systems in the Czech Republic
Urban, Nicole Aemilia ; Mravčík, Viktor (advisor) ; Kulhánek, Adam (referee)
Background: The prevalence of e-cigarette usage has been increasing. There are less adverse health effects on health in comparison to conventional cigarettes. However, the longitudinal effect on health is unknown. The risks include an emerging nicotine dependence or lung diseases. Aims: The study aims to map out the current situation of the patterns of use, motivation and preferences among Czech e-cigarette users. Methods: Data were collected online from December 2019 to March 2020 with an online questionnaire inquiry. The population comprised of e-cigarette users living in the Czech Republic. The sample composed of 143 non-random respondents (54 women, 89 men) of ages 18-69. Microsoft Excel was used for data analysis; methods of descriptive statistics were used. Results: Most e-cigarette users are current or ex-smokers. One third of the respondents have been using e-cigarette for 6 years or longer with the goal of smoking reduction (35.7%) or reducing the foul smell of conventional cigarettes - a reason mostly found in women (33.3% of women compared to 4.5% of men). One fourth of the respondents have never tried to stop smoking. The number of users who have never used conventional cigarettes is 4.2% men and 2.2% women. Individual nicotine consumption is declining subjectively. The respondents...

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