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On-line Data Analysis Based on Visual Codebooks
Beran, Vítězslav ; Honec, Jozef (referee) ; Sojka, Eduard (referee) ; Zemčík, Pavel (advisor)
Práce představuje novou adaptabilní metodu pro on-line vyhledávání videa v reálném čase pomocí vizuálních slovníků. Nová metoda se zaměřuje na nízkou výpočetní náročnost a přesnost vyhledání při on-line použití. Metoda vychází z technik využitých u statických vizuálních slovníků. Tyto běžné techniky jsou upraveny tak, aby byly schopné se adaptovat na proměnlivá data. Postupy, které toto u nové metody řeší, jsou - dynamická inverzní frekvence dokumentů, adaptabilní vizuální slovník a proměnlivý invertovaný index. Navržený postup byl vyhodnocen na úloze vyhledávání videa a prezentované výsledky ukazují, jaké vlastnosti má adaptabilní metoda ve srovnání se statickým přístupem. Nová adaptabilní metoda je založena na konceptu plovoucího okna, který definuje, jakým způsobem se vybírají data pro adaptaci a ke zpracování. Společně s konceptem je definován i matematický aparát, který umožňuje vyhodnotit, jak koncept nejlépe využít pro různé metody zpracování videa. Praktické využití adaptabilní metody je konkrétně u systémů pro zpracování videa, kde se očekává změna v charakteru vizuálních dat nebo tam, kde není předem známo, jakého charakteru vizuální data budou.
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Multimedia Data Processing in Heterogeneous Distributed Environment
Kajan, Rudolf ; Ferko,, Andrej (referee) ; Míkovec, Zdeněk (referee) ; Herout, Adam (advisor)
Pervasive computing sa zameriava odstránenie zložitostí pri interakcii s výpočtovou technikou a zvýšenie efektivity pri jej každodennom používaní. Ale i po viac ako 15 rokoch od sformulovania hlavných cieľov Pervasive computingu existujú aspekty interakcie ktoré stále nie sú súčasťou užívateľskej skúsenosti s dnešnou technológiou. Bezproblémová integrácia s prostredím vedúca k technologickej neviditeľnosti, alebo interakcia naprieč rôznymi zariadeniami predstavujú stále veľkú výzvu. Hlavným cieľom tejto práce je prispieť k tomu, aby sa ciele Pervasive computingu priblížili k realizovaniu tým, že predstavíme spôsob intuitívneho zdieľania informácií medzi osobným a verejne umiestneným zariadením. Predstavili sme tri interakčné techniky, ktoré podporujú intuitívnu výmenu obsahu medzi osobným zariadením a zdieľaným displejom. Tieto techniky sú založené na prenose videa, rozšírenej realite a analýze pohľadových dát. Okrem interakčných techník sme tiež predstavili mechanizmus pre získavanie, prenos a rekonštrukciu aplikačného stavu na cieľovom zariadení.
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Optimization of network flow monitoring
Žádník, Martin ; Lhotka,, Ladislav (referee) ; Matoušek, Radomil (referee) ; Sekanina, Lukáš (advisor)
The thesis deals with optimization of network flow monitoring. Flow-based network traffic processing, that is, processing packets based on some state information associated to the flows which the packets belong to, is a key enabler for a variety of network services and applications. The number of simultaneous flows increases with the growing number of new services and applications. It has become a challenge to keep a state per each flow in a network device processing high speed traffic. A flow table, a structure with flow states, must be stored in a memory hierarchy. The memory closest to the processing is known as a flow cache. Flow cache management plays an important role in terms of its effective utilization, which affects the performance of the whole system. This thesis focuses on an automated design of cache replacement policy optimized to a deployment on particular networks. A genetic algorithm is proposed to automate this process. The genetic algorithm generates and evaluates evolved replacement policies by a simulation on obtained traffic traces. The proposed algorithm is evaluated by designing replacement policies for two variations of the cache management problem. The first variation is an evolution of the replacement policy with an overall low number of state evictions from the flow cache. The second variation represents an evolution of the replacement policy with a low number of evictions belonging to large flows only. Optimized replacement policies for both variations are found while experimenting with various encoding of the replacement policy and genetic operators. The newly evolved replacement policies achieve better results than other tested policies. The evolved replacement policy lowers the overall amount of evictions by ten percent in comparison with the best compared policy. The evolved replacement policy focusing on large flows lowers the amount of their evictions two times. Moreover, no eviction occurs for most of the large flows (over 90%). The evolved replacement policy offers better resilience against flooding the flow cache with large amount of short flows which are typical side effects of scanning or distributed denial of service activities. An extension of the replacement policy is also proposed. The extension complements the replacement policy with an additional information extracted from packet headers. The results show further decrease in the number of evictions when the extension is used.
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Oxygen therapy after cardiothoracic surgery from the point of view of nurses and patients
VRCHOTOVÁ, Klára
Cardiac surgeries are very serious surgical procedures with considerable specific features. This bachelor thesis focuses on oxygen therapy from the viewpoints of nurses and patients. Its theoretical part describes physiology of breathing and the oxygen therapy as such. It describes individual sources of oxygen and indications for oxygen administration. It also describes principles to be observed during oxygen administration. Specific aids are used for oxygen administration, particularly oxygen masks or oxygen goggles. Quality pulmonary rehabilitation is also necessary to make oxygen therapy more effective. Pulmonary rehabilitation is particularly important for patients after a cardiac surgery and it should be practiced even before the surgery. This approach is critical because in the post-surgery period the therapy makes it possible for the patient to breathe and to expectorate properly. Pulmonary rehabilitation is practiced with patients by general nurses at the cardio surgery ward, as well as by physiotherapists. There are various techniques available to determine efficiency of oxygen therapy and pulmonary rehabilitation. The techniques may be classified as invasive and non-invasive; the most frequently used non-invasive method is pulse oxymetry and the most frequently used invasive technique is blood collection for ABR. Two objectives were set for the thesis. The first objective was to map knowledge of nurses about how to provide care to patients treated with oxygen therapy. The second objective was to determine how the patients feel after a cardiac surgery. Two hypotheses and two research questions were formulated. The first hypotheses were: Nurses working at the resuscitation care station have more knowledge about oxygen therapy than nurses working at the intermediate care station. The second hypothesis was: Nurses working at the resuscitation care station have more knowledge about pulmonary rehabilitation than nurses working at the intermediate care station. The first research question was: How do the patients feel during oxygen therapy and pulmonary rehabilitation? The second research question was: How are the patients after a cardiac surgery informed about oxygen therapy and pulmonary rehabilitation? In the research part of the bachelor thesis I have used both quantitative and qualitative research methods. Quantitative processing of data was used for questionnaires filled out by nurses working in the hospitals Nemocnice České Budějovice a.s., Nemocnice na Homolce in Prague and in the faculty hospital Královské Vinohrady in Prague. The method was used for evaluation and assessment of knowledge of nurses working at the resuscitation and intermediate care wards. Quantitative methods were used for processing of data obtained through semi-structured interviews with patients after a cardiac surgery. The data were transcribed and coded using a pencil and paper method. The data were categorized based on the identified codes. Two categories were created: oxygen therapy and pulmonary rehabilitation. Each of the categories was further divided into three sub-categories. Two categories were created for the research oxygen therapy and pulmonary therapy. Three sub-categories were subsequently created for the oxygen therapy and the pulmonary therapy. The quantitative research has shown that the knowledge of nurses about oxygen therapy is higher among the nurses working at the resuscitation care ward. However, the situation is different in case of their knowledge about pulmonary rehabilitation. In this case the knowledge of nurses working at the intermediate care ward was higher. The processed data from the qualitative research have shown that patients do have sufficient information about post-surgery oxygen therapy, as well as about pulmonary rehabilitation. For all patients in the post-surgery period after a cardiac surgery the frequency of pulmonary rehabilitation was higher than 1 per day.
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Processing and utilization of by-products of brewery operations for energy purposes
Foltis, Marek ; Malaťák, Jan (advisor) ; Bradna, Jiří (referee)
The diploma thesis called Processing and using of co-products from brewery for energetic purposes. The thesis concerns it self with analysis current situation on field of processing waste from brewery industry. The thesis is focused on possibility of using brewery waste for energetic purposes. The thesis is divided in to two parts. First part features literature research of the topic, using all available resources. Second part features real data from element analysis done on samples of brewery waste and calculation of main characteristics of brewery waste. All calculations concerns them self in using brewery waste like substitution for fossil fuel. Goal of second part of thesis also is evaluate possibility of using brewery waste to make brewing more efficient.
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Economic factors and profitabilty in woodworking industry
Červený, Luboš ; Kupčák, Václav (advisor) ; Palátová, Petra (referee)
The diploma thesis was focused on identification of economic factors in the lumber factory and their influences on economic efficiency and competitiveness under real company conditions. The other aim was in the field of the economic viability of forestry and lumber sector. The sawmill Javořice, Inc. became the selected company because of its komplex history. The sawmill was analyzed by financial indicators for period 2003 - 2014. The axis was divided in three time frames, of that two periods are evaluated (1/2 - 2003 - 2006; 2/2 - 2011 - 2016). The second step gives a defines the current competitive environment, for the identification SWOT analysis and 5F were used. Results of thesis contribute to the issue of the economic viability of forestry and lumber sector in the Czech Republic. The impoving trend of financial stability with the deleveraging of the fianancial situation, which is a residue of the insolvency period, follow from the economic analysis of the sawmill Javořice, Inc. In the field of competition the situation in the company is relatively good. The thesis can be a valuable tool, with which everyone can evaluate the company and a partner with who can trade.
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Creating a strategic plan for the development of selected municipality
Kulíková, Milena ; Čermáková, Helena (advisor) ; Jan, Jan (referee)
The object of this diploma work is to prepare documents for the strategic development plan of the selected municipality. Comprehensive development concept of the village is an important tool for achieving targets and effective management, because the village is then better utilized from human resources and also from tangible and intangible assets point of view. To determine priorities, wishes and demands of the inabitants was carried out a survey. The data were appraised with the use of internet application vyplňto.cz. Based on the situation analysis, socio-economic analysis and the results of the investigation were determined strategic areas, which will be crucial for the development and renewal of the village in the next 10 years. For each area was formulated SWOT analysis and with regard to the vision of the village have been designed for each strategic area the measures and specific projects that describe the problem sets and require special attention in further work in the village. A proposal of organizational development of the village, organisational structure, development indicators monitoring and updating development plan was determined. Based on the results it can be concluded that village acquired basic conceptual program document will be an important step towards the realization of sustainable development.
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Treatment of Liquid Phase of Digestate Enabling More Effective Utilization of Nutrients
Kotrč, Vlastislav ; Švehla, Pavel (advisor) ; Kulhánek, Martin (referee)
The present thesis focuses on theoretical evaluation of possible ways of processing liquid fraction of fermentation residue, allowing more efficient use of nutrients.
The introductory part is devoted to biogas, he described its origin, characteristics and possible uses. It is also characterized by a process of anaerobic fermentation and the factors influencing its course. The resulting products are energy-rich biogas and also mentioned fermentation residue. The fourth chapter describes the principle of operation of a biogas plant and a closer approach to the current situation in the Czech Republic and Europe. The main part deals with the rest of the so-called fermentation. Digestate and in particular its separate liquid component Liquid digestate containing a large amount of nutrients that can be effectively used with appropriate procedures. The final chapter is devoted to a description and critical evaluation of the methods of pre-treatment Liquid digestate.
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