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Voltage Conveyors in Linear Blocks
Dohnal, Pavel ; Jeřábek, Jan (referee) ; Koton, Jaroslav (advisor)
The main goal of this diploma thesis will be realization of tunable frequency filters using voltage conveyors, that are only little explored yet. At the beginnig of diploma thesis the frequency filters and their types will be defined. The theory of voltage conveyors based on principle of duality results from the character of current conveyors. Accordingly these active components will be closely presented. At first there will be defined individual types of voltage conveyors and their closer characteristics. Then design methods of frequency filters using unconventional active components will be described. There will be defined the method of the total admitance net, subsequently design using synthetic components and at the end there will be presented method using follow graphs that will be used to design concrete circuit solution. Using follow graphs method will be found circuit solutions of current structures with unconventional active components. During searching circuit solutions will be very important the posibility to operate the quality factor. That can be obtained by two ways. One way is the activ operation which is done by coeficients of the activ component. Other way is operating using the passiv component. There are found 26 circuits that realize condition of active operating using two active and four passive components. One of these circuits will be chosen and simulated in simulation program PSpice. To compare both methods of operation there will be compiled some circuit with passive operating with two active and five passive components and one of the passive components will be able to operate the quality factor. This circuit will be simulated in the simulation program PSpice again. The circuit will be real compiled and experimentaly measured in laboratory. Results of this measurement will be compared with calculated values and with values acquired from the simulations.
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Frequency filters using voltage conveyors
Dohnal, Pavel ; Vrba, Kamil (referee) ; Minarčík, Martin (advisor)
The topic of this bachelor´s thesis was frequency filters and their realization using voltage conveyors. The main goal of my thesis was design and simulation of frequency filters with voltage conveyors through two different methods. At first there were found filters second order with voltage conveyors using autonomous circuits. These circuits resulted from total admitance net. Then the frequency filters using voltage conveyors were solve through synthetic components. At the beginnig of this project the frequency filters, their characteristics, realizations and types were defined. Then were designed basic properties of current conveyors, from which we can derive voltage conveyors. The voltage conveyors are basic building components of my thesis. There were defined individual types of voltage conveyors and their close specification. There was defined universal voltage conveyor. Through the universal voltage conveyor we can realize all types of voltage conveyors. After the definition of useful species there were designed the frequency filters second order using voltage conveyors with four passive components using the total admitance net. There were found 44 these circuits. Then one of these circuits was selected and this circuit was simulated to lowpass and hipass. Subsequently the other method was used, where were used the synthetic components to creation of filters secon order. The circuits resulted from autonomous circuits, which were produced by the first method. 25 of these autonomous circuits were usable for this method. One of these circuits was simulated to lowpass and hipass.
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The colonization of the Sokolov county in the years 1945-1948
Dohnal, Pavel ; Kvaček, Robert (advisor) ; Rychlík, Jan (referee)
This work discuss the colonization of the Falknov nad Ohří county in the years 1945 - 1948. It's purpose is to describe national, political and economic development with respect not even to the county itself but with respect to metropolitian institutions too. This work also describes legal and political background of whole action. An important part of this work is focused on particular nationalities especially on Germans (in context of their transport to Germany, but this work also outlines living conditions of Germans who stayed in the county). This work also discuss reemigration and the development of local economy in many areas (agricultural settlements, business and industry). This work also describes some negative aspects of the colonization: "gold - diggers" or the behaviour of czech authorities to Germans. There are described some stories of few interesting inhabitants of Falknov nad Ohří county in this work.
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The colonization of the Sokolov county in the years 1945-1948
Dohnal, Pavel ; Rychlík, Jan (referee) ; Kvaček, Robert (advisor)
This work discuss the colonization of the Falknov nad Ohří county in the years 1945 - 1948. It's purpose is to describe national, political and economic development with respect not even to the county itself but with respect to metropolitian institutions too. This work also describes legal and political background of whole action. An important part of this work is focused on particular nationalities especially on Germans (in context of their transport to Germany, but this work also outlines living conditions of Germans who stayed in the county). This work also discuss reemigration and the development of local economy in many areas (agricultural settlements, business and industry). This work also describes some negative aspects of the colonization: "gold - diggers" or the behaviour of czech authorities to Germans. There are described some stories of few interesting inhabitants of Falknov nad Ohří county in this work.
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Sokolov county in the years 1918-1938
Dohnal, Pavel ; Čechurová, Jana (referee) ; Kvaček, Robert (advisor)
This work is focused on Falknov county in the years 1918-1938. There is described its political, economical and social development in regard to mutual relations among the multiethnic population and to state's minority policy therein. The aim of this work is to depict the evolution of attitude of German majority to the Czechoslovakia - from the fall of monarchy, through economy setback during the Great depression and the gradual popularity growth of SHF/SdP to the occupation of Falknov county by Nazi Germany. In this regard are emphasised the manifestations of respektive political and national entities in public space. Essential sources of this work are records of municipal authorities. Therefore this work also aims to point out their role in the Czechoslovak Republic.
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Frequency filters using voltage conveyors
Dohnal, Pavel ; Vrba, Kamil (referee) ; Minarčík, Martin (advisor)
The topic of this bachelor´s thesis was frequency filters and their realization using voltage conveyors. The main goal of my thesis was design and simulation of frequency filters with voltage conveyors through two different methods. At first there were found filters second order with voltage conveyors using autonomous circuits. These circuits resulted from total admitance net. Then the frequency filters using voltage conveyors were solve through synthetic components. At the beginnig of this project the frequency filters, their characteristics, realizations and types were defined. Then were designed basic properties of current conveyors, from which we can derive voltage conveyors. The voltage conveyors are basic building components of my thesis. There were defined individual types of voltage conveyors and their close specification. There was defined universal voltage conveyor. Through the universal voltage conveyor we can realize all types of voltage conveyors. After the definition of useful species there were designed the frequency filters second order using voltage conveyors with four passive components using the total admitance net. There were found 44 these circuits. Then one of these circuits was selected and this circuit was simulated to lowpass and hipass. Subsequently the other method was used, where were used the synthetic components to creation of filters secon order. The circuits resulted from autonomous circuits, which were produced by the first method. 25 of these autonomous circuits were usable for this method. One of these circuits was simulated to lowpass and hipass.
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Voltage Conveyors in Linear Blocks
Dohnal, Pavel ; Jeřábek, Jan (referee) ; Koton, Jaroslav (advisor)
The main goal of this diploma thesis will be realization of tunable frequency filters using voltage conveyors, that are only little explored yet. At the beginnig of diploma thesis the frequency filters and their types will be defined. The theory of voltage conveyors based on principle of duality results from the character of current conveyors. Accordingly these active components will be closely presented. At first there will be defined individual types of voltage conveyors and their closer characteristics. Then design methods of frequency filters using unconventional active components will be described. There will be defined the method of the total admitance net, subsequently design using synthetic components and at the end there will be presented method using follow graphs that will be used to design concrete circuit solution. Using follow graphs method will be found circuit solutions of current structures with unconventional active components. During searching circuit solutions will be very important the posibility to operate the quality factor. That can be obtained by two ways. One way is the activ operation which is done by coeficients of the activ component. Other way is operating using the passiv component. There are found 26 circuits that realize condition of active operating using two active and four passive components. One of these circuits will be chosen and simulated in simulation program PSpice. To compare both methods of operation there will be compiled some circuit with passive operating with two active and five passive components and one of the passive components will be able to operate the quality factor. This circuit will be simulated in the simulation program PSpice again. The circuit will be real compiled and experimentaly measured in laboratory. Results of this measurement will be compared with calculated values and with values acquired from the simulations.
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Matlab-Aimsun Toolbox 2.1
Dohnal, Pavel ; Dibelka, Lukáš ; Elbl, Marek
This text is the user's guide for installing and using toolbox for performing traffic experiments in Matlab 7.1 (or higher). The simulation is automatically ran in extern application - traffic simulator Aimsun 4.2. This is part of software package Getram Extensions 4.2, which must be installed, because is necessary for toolbox function. Getram Extensions 4.2 is supported only for Win32 platform, so that toolbox can be installed only on this platform (Windows 2000, Windows XP, etc.)
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Toolbox pro dopravní simulace
Dohnal, Pavel
The Aimsun simulator is powerful tool for simulation of traffic flow while the Matlab environment provides the rich set of functions that simplify the process of design, optimization and testing of developed traffic control. Toolbox combines together advantages of both of them.
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Bayesovské odhadování délky kolony
Dohnal, Pavel
The paper deals with an application of Bayes for estimation of the queue length in junction arm. In Bayesian view the concept of probability is not interpreted in terms of limits of relative frequencies but more generally as a subjective measure of belief of a rationally and consistently reasoning person which is used to describe quantitatively the uncertain relationship between the statistician and the external world. This model splits controlled networks into microregions. The queue length and the occupancy of each junction approach are the basic state quantities for fully expressed traffic situation at given time instant. The occupancy determines relative time of the detector activation during sample period, i.e. the proportion of time when detector has been occupied and total time of measuring period. The optimization criterion for this attitude is minimization of the queue length. For clearness, the model is derived for simple junction.
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