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Exploring Brain Network Connectivity through Hemodynamic Modeling
Havlíček, Martin ; Hluštík, Petr (referee) ; Šmídl,, Václav (referee) ; Jan, Jiří (advisor)
Zobrazení funkční magnetickou rezonancí (fMRI) využívající "blood-oxygen-level-dependent" efekt jako indikátor lokální aktivity je velmi užitečnou technikou k identifikaci oblastí mozku, které jsou aktivní během percepce, kognice, akce, ale také během klidového stavu. V poslední době také roste zájem o studium konektivity mezi těmito oblastmi, zejména v klidovém stavu. Tato práce předkládá nový a originální přístup k problému nepřímého vztahu mezi měřenou hemodynamickou odezvou a její příčinou, tj. neuronálním signálem. Zmíněný nepřímý vztah komplikuje odhad efektivní konektivity (kauzálního ovlivnění) mezi různými oblastmi mozku z dat fMRI. Novost prezentovaného přístupu spočívá v použití (zobecněné nelineární) techniky slepé dekonvoluce, což dovoluje odhad endogenních neuronálních signálů (tj. vstupů systému) z naměřených hemodynamických odezev (tj. výstupů systému). To znamená, že metoda umožňuje "data-driven" hodnocení efektivní konektivity na neuronální úrovni i v případě, že jsou měřeny pouze zašumělé hemodynamické odezvy. Řešení tohoto obtížného dekonvolučního (inverzního) problému je dosaženo za použití techniky nelineárního rekurzivního Bayesovského odhadu, který poskytuje společný odhad neznámých stavů a parametrů modelu. Práce je rozdělena do tří hlavních částí. První část navrhuje metodu k řešení výše uvedeného problému. Metoda využívá odmocninové formy nelineárního kubaturního Kalmanova filtru a kubaturního Rauch-Tung-Striebelova vyhlazovače, ovšem rozšířených pro účely řešení tzv. problému společného odhadu, který je definován jako simultánní odhad stavů a parametrů sekvenčním přístupem. Metoda je navržena především pro spojitě-diskrétní systémy a dosahuje přesného a stabilního řešení diskretizace modelu kombinací nelineárního (kubaturního) filtru s metodou lokální linearizace. Tato inverzní metoda je navíc doplněna adaptivním odhadem statistiky šumu měření a šumů procesu (tj. šumů neznámých stavů a parametrů). První část práce je zaměřena na inverzi modelu pouze jednoho časového průběhu; tj. na odhad neuronální aktivity z fMRI signálu. Druhá část generalizuje navrhovaný přístup a aplikuje jej na více časových průběhů za účelem umožnění odhadu parametrů propojení neuronálního modelu interakce; tj. odhadu efektivní konektivity. Tato metoda představuje inovační stochastické pojetí dynamického kauzálního modelování, což ji činí odlišnou od dříve představených přístupů. Druhá část se rovněž zabývá metodami Bayesovského výběru modelu a navrhuje techniku pro detekci irelevantních parametrů propojení za účelem dosažení zlepšeného odhadu parametrů. Konečně třetí část se věnuje ověření navrhovaného přístupu s využitím jak simulovaných tak empirických fMRI dat, a je významných důkazem o velmi uspokojivých výsledcích navrhovaného přístupu.
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Assessment of the technical condition of the sewer system in the village
Krulová, Martina ; Úterský, Michal (referee) ; Hluštík, Petr (advisor)
This bachelor thesis deals with the assessment of the technical condition of the sewer network in Sudice and the subsequent recommendation of the remediation of sewerage pipes and manhole. In this work there is a legislation that deals with the issue and general information about the village. There is a description of the execution passportization of the sewer network, the passportization target and the current status of the sewer network. In the thesis is devoted a part of hydraulic assessment of sewerage network, where are calculations of sewage flows and rainwater flows in the network and consequent comparison of suggestion flow with the capacity flow. Based on the results of the performed passportization and acquired camera records, the technical condition of the sewer pipes and manholes was evaluated. The work deals with the recommendation of rehabilitation of sewerage pipes and manholes, where the most serious types of failures on the assessed sewer network are found. There are advantages and disadvantages of recommended remediation methods. The thesis includes three drawings (total situation, detailed situation and hydrotechnical situation) and a sample revision sheet.
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Chemicals for waste water treatment
Doskočilová, Denisa ; Vachovec, Roman (referee) ; Hluštík, Petr (advisor)
The aim of this bachelor thesis is to get the reader acquainted first with the history of wastewater treatment in the Czech Republic and also the legislation that relates to waste water treatment. Furthermore, this work will provide an overview of each part of technological wastewater treatment plants and chemicals that can be used in various cases, including their manufacturers and prices. In the practical part there will be conducted a calculation of the amount of coagulant including its annual costs for WWTP Čebín. This material may be an inspiration for either design offices or water managing companies and also the general public.
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Study of sewerage and wastewater disposal
Dvorský, Petr ; Úterský, Michal (referee) ; Hluštík, Petr (advisor)
This thesis deals with the study of the sewerage network in the village of Pavlovice u Přerova. Its main objective is to accomplish the passportization of the sewer network in the village, including the inspection of the waste water treatment plants. Based on the results of the passport, a hydraulic analysis of the sewer network was performed. The technical and operational state of the selected sections and the objects on the sewer network was evaluated. The draft measures for bad sections of the sewerage network and for the waste water treatment plants were taken on the basis of the evaluation. In the next part of the thesis, there were chosen methods of rehabilitation of the sewer network and the design of new waste water treatment plants. The proposed variants are also economically evaluated and compared. The thesis is complemented by the situation of the sewer network as a result of the passportization and also with the hydrotechnical situation.
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Structural and technical condition of the sewer system in the village
Hublová, Nikola ; Macsek, Tomáš (referee) ; Hluštík, Petr (advisor)
The bachelor's thesis is focused on the evaluation of structural and technical condition of the sewer network in a selected municipality. The thesis is divided into two parts. The first part lists the legislation related to the sewer network. Faults occurring on the sewer network are described together with selected factors influencing the condition of the sewer pipe. For fault detection were introduced pipeline monitoring methods with a description of codes intended for the evaluation of qdetected faults in accordance with ČSN EN 13508-2. The second part presents the municipality in which the network passport took place. According to the available documentation, all elements of the sewer network were traced and then geodetically oriented. All shafts were visually inspected and obtained informations were recorded in the register of elements. Selected sections of the pipeline were inspected by a robot with camera and all faults were classified according to the coding system from the standard ČSN EN 13508-2. The overall structural and technical condition of the sewer network was summarized and variants were presented representing the possibilities of how to deal with the information obtained.
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Hydraulic calculation of sewage system in Lipůvka
Balas, Jan ; Raček, Jakub (referee) ; Hluštík, Petr (advisor)
Diploma thesis is focused on hydraulic assessment of Lipůvka´s sewer system, done by dynamic rainfall-runoff simulation model. Because of this fact, chapter about mathematical models is included. Commonly used programs to this actions are listed as well. Next part of the thesis describes monitoring campaign, which was done in Lipůvka and results are used to calibrate the simulation model. Hydraulic assessment of sewer system by this calibrated model was done.
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Composting in the Czech Republic
Glombová, Pavla ; Horák, Marek (referee) ; Hluštík, Petr (advisor)
The aim of bachelor thesis is a description of the issue related to biological disposing of degradable waste by composting. It is concerned by the most important valid laws in this field, by technologies of composting and by the facilities used to dispose these waste – by composting facilities. In the practical part there is a compiled database of composting facilities in the Czech Republic, sorted by the regions. Their basic data are included (operator, address, website, contact information, capacity, used technology, amount of compost production, its price and utilization, accepted waste, used machinery and equipment, the year of commissioning, intensification).
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Energy balance of urban wastewater treatment plants
Čížová, Barbora ; Bartoník, Adam (referee) ; Hluštík, Petr (advisor)
The research part of the diploma thesis is focused on an issue of energy consumption in sludge treatment at wastewater treatment plants divided by the number of population equivalent. The aim of the practical part is to set indicators and propose evaluative criteria concerning energy performance of urban wastewater treatment plants. The verification of proposed criteria and energetic analysis result from data of the wastewater treatment plant in Novy Jicin.
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The amount of waste from wastewater treatment process
Žíla, Radim ; Macsek, Tomáš (referee) ; Hluštík, Petr (advisor)
This Bachelor's Thesis is focused on the amount of waste produced by the sewage treatment plants for the amount up to 2.000 equivalent inhabitants with the gravitational inflow. There are all the types of individual sewage treatment plants of the size up to 2.000 equivalent inhabitants listed in the first section of the theoretical part and the second section of the theoretical part deals with the thorough analysis of all the objects within the sewage treatment plant, their draft specifications and the description of the waste handeling. The practical part of this Bachelor's Thesis deals with the evaluation of the production of waste for the amount up to 2.000 equivalent inhabitants in individual municipalities within the South Moravian region. More specifically it describes the waste of screenings, sand, insoluble substances and sludge on one equivalent inhabitant and its subsequent comparison with the regulation according to ČSN. The evaluation compares all the municipalities among each other and their production of waste is also compared to ČSN.
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Pre-treatment of rainwater before entering the infiltration tank
Spurný, Martin ; Balas, Jan (referee) ; Hluštík, Petr (advisor)
The diploma thesis is focused on the topic of pre-treatment of rainwater before entering the infiltration tank. The theoretical part deals with the issue of rainwater, their division and pollution, as well as technical solutions for rainwater management. In the practical part, testing of selected street drains of various construction systems in the laboratory of VHO (municipal water management) was performed and subsequently these drains were evaluated according to various criteria - the amount of captured material, drain cleaning system and filter construction.
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