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Methodology of mobile applications development
Mészáros, Maroš ; Buchalcevová, Alena (advisor) ; Mittner, Jan (referee)
Trends in IT are focusing on the development of mobile applications. With that, pressure on the software companies to include software development for mobile platforms is increasing. The current methodologies managed to cope with the development of small and custom software development and web applications. Intensive efforts are underway to revise current methodologies to be adjusted for the mobile platform. Goal of this thesis is to design methodology to suit small businesses up to 50 employees and enable them to develop efficiently. Using practical knowledge retrieved from this type of companies, it suggests the entire set of processes and tools that can be used for this purpose, and then tests them in practical demonstrations focusing on the analysis phase.
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2-D simulations of electromigration processes
Kolivoška, Viliam ; Koval, Dušan (referee) ; Gaš, Bohuslav (advisor)
6 Abstract In the presented thesis we introduce a computational model that can be used for 2-D and 3-D computer simulations of experiments in electrophoresis. The simulations are carried out by the aid of the finite element method (FEM). In particular, commercially available program Comsol Multiphysics 3.3 is employed. A general shape of continuity equation is chosen to express the mass, electric charge, momentum and energy conservation law. Diffusion, migration and convection terms are taken into account when formulating the mass conservation law. Both external (driving voltage) and internal (diffusion currents) terms are considered in the electric charge conservation law. Both constant voltage mode and constant current mode can be handled. A solvent is regarded as an incompressible Newtonian fluid. Both pressure-driven and electroosmotic flows can be taken into consideration. The heat convection as well as the heat diffusion is governed by the energy conservation law. Both strong and weak electrolytes (of any attainable valency) may be regarded as system constituents. Furthermore, the model can handle the ionic strength correction if desired. A task may be assigned either in Cartesian or cylindrical coordinates. The presented model was employed to solve four particular tasks. The first one inspects the...
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The comparison of some hemodynamics parameters, obtained by two non-invasive measurement methods - echocardiography and impedance cardiography (HOTMAN System) by patients with systemic hypertension
SASSMANNOVÁ, Anna
Echocardiography is an investigation of heart via scan. This enables to intend the moving and the locality of heart structures via scan pulse waves which are repulsed with acoustic interfaces. Impedance measuring of the thorax hemodynamics is based on changes of electrical impedance. These changes happen mainly because of the heart function. By its rhytmical function the heart periodically changes the conditions of blood flow through all vessels. By this we can explain periodical changes of impedance with frequence of heartbeat which we can observe by measuring. In this work I describe the comparison of two noninvasive investigation methods {--} echocardiography and impedance measuring of hemodynamics (Hotman System). We can use both of them to examine patients with high blood pressure (hypertension). My measurings are based on hemodynamics concept of hypertension. I did not take into account the actual treatment of patients. It is reviewed only patient´s actual situation and values of EF (ejection fraction) and CI (cardiac index) are compared in the same time by the same conditions.
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Application of SPS technology for preparation of high-tech materials
Mušálek, Radek
Spark Plasma Sintering (SPS) is a modern technology, which allows sintering of powder materials in the variable electric field (also FAST technology – Field Assisted Sintering Technique). Heating rate in the range of hundreds °C/minute, high pressure and sintering temperature (more than 2000 °C) enables for example sintering of materials with high melting point or nanometric powders without growth of grain size in the sintered body.
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Strategic Analysis of a Nongovernmental Health-Care Facility
Kandilaki, Daniela ; Lešetický, Ondřej (advisor) ; Střítecký, Rudolf (referee)
The aim of this thesis is to formulate strategic analysis of Mediconet, private health care provider. The place of business is in the capital city of Prague and the second largest town, Brno. According to determinate sector -- healthcare, the company operates in a dynamic environment. This sector is furthermore under a strong pressure of competition. Among the strengths we can find a long tradition, good name of the company and large offer of provided services. On the other hand weakness of the company is based on shortage of medical staff and underestimated management activities. According to these facts the recommendation list will be created at the end of this work.
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Simulation and determination of permanent pressure loss for the normalized orifice plate
Šimberský, Michal ; Uher, Miroslav (referee) ; Šedivá, Soňa (advisor)
This master’s thesis deals with the simulation of flow through the normalized orifice plate. There is described flow measurement with flowmeters, which reduces the cross-section of the pipe and causes the pressure difference before and after the flowmeter. Following is a description methods of modeling of turbulent flow and a description of software for the simulation of flow from the company Ansys. The theoretical part is followed a practical part, which is focused on determining the permanent pressure loss caused by the orifice plate and the verification of straight pipeline lengths between orifice and obstacle.
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Magnetic field Supported Discharge Based Plasma Sources
Havlíček, Josef ; Kudrna, Pavel (advisor) ; Tichý, Milan (referee)
Main aim of this work was measurement of a floating potential fluctuations in the cylindrical magnetron in classical configuration in neon. Two Langmuir probes were used for measurement of wave vector. The following values were measured: pressure p in range 1-7 Pa, magnetic induction B in range 10-40 mT, discharge current I in range 5-100 mA, discharge voltage U and floating potential Uf. Fluctuations were described by dependencies of power spectral density on frequency S(f) and by histograms S(k,f), where k is wave vector. Several discharge modes were observed in the magnetron. These are characterized by different values of discharge voltage, electric field in positive column, magnitude of the floating potential etc. The discharge conditions, where peaks were observed in spectra, were determined. Only one peak with frequency in range 4-16 kHz was mostly observed. Most of these peaks had zero wave vector in histogram S(k,f), i.e. the floating potential synchronously oscillated in the whole discharge area. For some discharge conditions histograms with non-zero wave vector for noise background were observed.
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Formation of RONS in cold air plasma activazed water and their effects on cell membranes of Escherichia coli
Tarabová, B. ; Machala, Z. ; Doležalová, Eva ; Lukeš, Petr
In this work, we focused on the detection of secondary reactive oxygen and nitrogen species (RONS) formed by cold plasma induced gas-liquid chemistry in air discharge activated water and liquids. Plasma induced chemical changes in plasma activated water (PAW) were correlated with the antibacterial effect, sublethal injury of bacterial cells and peroxidation of membrane lipids. The contribution of the electric field induced by the plasma treatment was evaluated by the detection of membrane permeabilization. The bactericidal effects of direct (plasma and PAW) and indirect (only PAW) treatments were compared with long-term preservation of the PAW with its antibacterial properties
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