Thematische Bibliographien / Násobek / Dissertationen
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Dissertationen zum Thema „Násobek“

Autor: Grafiati
Veröffentlicht am 28. Juni 2021
Zuletzt aktualisiert am 1. Februar 2022

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1

Forman, Tomáš. „Modifikace přistávacího zařízení letounu Irbis“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-442836.

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This master thesis deals with the landing gear rebuild from tail gear to nose gear of the M-4 Irbis aircraft. The first chapter presents the aircraft in its current state and includes some technical data, too. The theoretical information about types of landing gears, its characteristics, pros and cons and the typical representatives for each type of landing gear are mentioned in the second chapter. The third chapter is about landing gear loads that occur during landing and about the load calculation according to UL 2 regulation. The following chapter shows the construction of the new landing gear, including some of the suggested, but not realised, designs. In the fifth chapter, there is a landing gear strength calculation of some of the gear components. The calculation is analytical and then uses FEM. The very last chapter then shows the effect of new landing gear on the centre of gravity in its extreme positions. The chapter also compares aircraft masses with both landing gears.
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2

Slouka, Lukáš. „Implementace neuronové sítě bez operace násobení“. Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2018. http://www.nusl.cz/ntk/nusl-386017.

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The subject of this thesis is neural network acceleration with the goal of reducing the number of floating point multiplications. The theoretical part of the thesis surveys current trends and methods used in the field of neural network acceleration. However, the focus is on the binarization techniques which allow replacing multiplications with logical operators. The theoretical base is put into practice in two ways. First is the GPU implementation of crucial binary operators in the Tensorflow framework with a performance benchmark. Second is an application of these operators in simple image classifier. Results are certainly encouraging. Implemented operators achieve speed-up by a factor of 2.5 when compared to highly optimized cuBLAS operators. The last chapter compares accuracies achieved by binarized models and their full-precision counterparts on various architectures.
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3

Juhaňák, Pavel. „Zjednodušené násobení v konvolučních neuronových sítích“. Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2019. http://www.nusl.cz/ntk/nusl-403135.

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This thesis provides an introduction to classical and convolutional neural networks. It describes how hardware multiplication is conventionally performed and optimized. A simplified multiplication method is proposed, namely multiplierless multiplication. This method is implemented and integrated into the TypeCNN library. The cost of the hardware solution of both conventional and simplified multipliers is estimated. The thesis also introduces software tools developed to work with convolutional neural networks and datasets used to test them in the image classification task. Test architectures and experimentation methodology are proposed. The results are evaluated, and both the classification accuracy and cost of the hardware solution are discussed.
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4

Baev, Dmitriy. „Diagnostika vysokonapěťových kondenzátorů pro kaskádní napěťový násobič“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-318998.

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The main subject of the final thesis is to find a suitable method for measuring the partial discharge (PD) in the dielectric of high-voltage capacitor. In the theoretical part of my thesis contains from the mechanisms of origin and the harmful effects of partial discharge at high voltage insulation of capacitor. It describes the global galvanic method of partial discharge measurement, the principle of cascade voltage multiplier, its main components are high-voltage capacitor and diode, facilities quality measurement of capacitors for voltage multipliers, advantages and disadvantages and principles of HIPOTRONICS DDX-8003 with the pulse discrimination system. In the experimental part of the diploma thesis is familiar with the diagnostics of high – voltage capacitors by means of laboratory measurements on the electronic bridge and with the help of partial discharge measurement system. Design of suitable electrode arrangement is described which eliminates the influence of corona which makes it impossible to measure partial discharges and the dissipation factor (tg ). Analysis data from measurement and determination of quality level, eventual degradation of measured capacitors. The result of this project should be designed the methodology for finding of poor – quality capacitors in order to increase the reliability of the voltage multiplier.
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5

Kaplan, Tomáš. „Metoda pro evoluční návrh násobiček využívající development“. Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2010. http://www.nusl.cz/ntk/nusl-237241.

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This work is focused on the techniques for overcoming the problem of scale in the evolutionary design of the combinational multipliers. The approaches to the evolutionary design that work directly with the target solutions are not suitable for the design of the large-scale structures. An approach based on the biological principles of development has often been utilized as a non-trivial genotypephenotype mapping in the evolutionary algorithms that allows us to design scalable structures. The instruction-based developmental approach has been applied to the evolutionary design of generic circuit structures. In this work, three methods are presented for the construction of the combinational multipliers which use a ripple-carry adder for obtaining the final product.
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6

Miksl, Jan. „Analýza, vlastnosti a aplikace komerčně dostupných proudových násobiček“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219150.

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The diploma thesis deals with analysis, validation, measurement of parameters of the commercially available current multiplies (namely the EL2082 and EL4083) and their applications in practice. Control analysis are carried out in OrCAD PSpice program and compared with values from datasheets. Control analysis are focused on AC and DC characteristics of these active blocks. There are discusses the input impedance, the output impedance, the current gain and the possibility of electronic adjusting. The parameters of the elements were verified by measurements. Proposals for circuit applications (selective circuit, oscillator, frequency filter) with EL2082 and EL4083 are presented and analyzed in the program OrCAD. Three oscillator circuit designs are experimentally tested and the results are compared with the theoretical expectations and simulations in OrCAD. The possibility of electronic control for oscillators is examined. Also the sensitivity and the tolerance analysis are carried out. The constructional details of oscillators are presented at the end of this work.
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7

Kopeček, Pavel. „Analýza, vlastnosti a aplikace komerčně dostupných napěťových násobiček“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219161.

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This work deals with the analog multipliers, mainly of the voltage multipliers. Also the modifications of current output will appear here. The first part is devoted to a choice several multipliers and a description of their functions, the possible involvement and introduction of the most important catalog values. The next section deals with the simple application that contains at least one of the multipliers. Next was the implementation of selected applications and measure their actual performance parameters. Results are then compared with computer simulations. As final step is done of tolerance and sensitivity analysis of simulated configurations of circuits.
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8

Tiller, Jakub. „Vstupní část kvadraturního přijímače pro pásmo UHF“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219859.

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The object of this master's thessis is study and description of RF circuits, which are used for receiveing. This work is also aimed to design this circuits and their simulation in Ansoft Designer software. Focus is placed to the standard parameters of receiving technology. The description of amplifier design is presented in this work. Parameters of this amplifier are optimalized to low noise figure. Frequency multiplier designs are included in this project.
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9

Šustr, Jan. „Mikrovlnný transvertor z 5 760 MHz na 146 MHz“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219089.

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This work deals with a design of the microwave transverter for 5 760 MHz to 146 MHz. It is divided to a few parts. The first one is focused to design of the local oscillator which generates the signal at frequency f = 116.9583MHz. The oscillator is designed like a crystal oscillator. Its output signal is multiplied and amplified in a second part. The next parts deal with design of the band pass filters. There I chose the design of the filters and did the measurements. The microwave receiver and transmitter circuits are designed with the modern monolithic circuits. The main job of this part is to design low noise amplifier and the power amplifier. At the end of this work I do the measurements and the comparison with the simulations.
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10

Michalčák, Jan. „Výroba součásti z plastu“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228395.

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The project elaborated in the frame of engineering studies branch N2307-00 is submitting design of a product from plastic from material PP GF30. In the frame of literal study there are summarized technical knowledge from the area of plastic processing. On its base there is selected and specified technology of plastic injection and costruction of injection mold. Thesis is further dealing with the construction of injection mold, which is solved as a 1+1 multiple with the use of side sliding flank cores. During the course of the tool construction there were used standardized elements of Hasco company. The tool will be fixed by the use of Arburg ALLROUNDER 320C injection press. In the conclusion of the thesis there are verified necessary strenght of the mold and basic production cost analyses.
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11

Buš, Ondřej. „Přímý frekvenční číslicový syntezátor s externí synchronizací“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219881.

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This thesis deals with problematics of direct frequency digital synthesis. Principle and basic characteristics of this method of signal generating are explained in the introduction. It considers impact on purity of spectrum of output signal. Next chapter considers conception of the generator, namely choice of DDFS circuit and other basic blocks. Design of frequency multiplier, reconstruction filter and power amplifier are included. It also deals with choice of control circuit. The device is controlled by computer through USB. There was created user programme for this purpose. Measured characteristics are stated at the end of the work. This work includes schemes of connetions of designed parts including simulations and measured parameters.
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12

Chvátlina, Pavel. „Laboratorní přípravek pro testování tranzistorů IGBT“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217920.

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This master’s thesis describes the function and realization of the laboratory test equipment designed for measuring and analysing of collector current iC and voltage uCE courses during the opening and closing process of a power IGBT transistor. The opening and closing times toff and ton of the new power transistor IGBT are changing in the range from tenths to the ones s, so the reading of current iC and voltage uCE proceeds in a very short time. The measuring circuit of this test equipment is based on a short-time discharging of a condenser battery to the inductive load over the measured transistor. Consequently it is possible to replace the power supply whose maximum output power would otherwise have to be in the range of ones MW. In the final part of this thesis there are described properties and design of a high-frequency sensor with the Rogowski coil, which can be used for reading collector current course during opening and closing time of the measured transistor IGBT. Collector current iC and voltage uCE courses can be analysed with a storage oscilloscope.
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13

Hruboš, Zdeněk. „Laboratorní přípravek s analogovou výpočetní jednotkou AD538“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-218028.

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An analog multiplier are circuits, that are realized multiplication of two analog signals. They can be made by suitable connection (according to function) discreet parts. Nowadays there are integrated circuits in advance function, whose internal structure is made by complex of circuits with operating ampfliers and other circuits. These circuits have a very high accuracy of arithmetic operation which is mostly better than 1%. The analog multiplier are used in situation, when we need realize multiplication, division, exponentation, square root extraction and logarithmic calculation of analog signals. In the next are used in circuits for multiplication of frequency, shifting of frequency, amplitude modulation, detection phase angel of two signals with the same frequency, etc. The AD538 is a monolithic real-time computational circuit that provides precision analog multiplication, division and exponentiation. The combination of low input and output offset voltages and excellent linearity results in accurate computation over an unusually wide input dynamic range.
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14

Polák, Jiří. „Citlivostní analýza nákladů na výpadky plynoucí z nedodržení zákaznických standardů nepřetržitosti dodávky“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218536.

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The goal of the thesis is to describe the approaches used for the regulation of the continuous supply of electric power in the selected countries of European Union and to determine the power outages costs in the specific distribution network, resulting from non-observance of the customer standards used in Great Britain, Sweden and Finland. The costs have been calculated for the entire network, as well as for the individual outputs. The thesis carries out the sensitivity analysis of the power outages costs, resulting from the breaching the supply restoration standards and the multiple interruptions standard used in the Great Britain. The costs of the individual limits are shown in the tables and the graphs. The comparison of the individual outputs according to the height of the penalty costs have been carried out on the selected set of limits. The comparison of the order of the individual outputs is then carried out for the customer standards used in Great Britain, Sweden and Finland.
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15

Šimon, Martin. „Vizuální sledování objektu v reálném čase“. Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2015. http://www.nusl.cz/ntk/nusl-234924.

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This thesis focuses on real-time visual object tracking with emphasis on problems caused by a long-term tracking task. Among theses problems belong primarily an occlusion problem, both the partial and the full one, and appearance changes of the object during the tracking. The work is also concerned with tracking objects of a very limited size and unsteady camera movements. These two particular problems are relatively common when tracking distant objects. A part of this work is also a summary of related work and a proposal of a system with high qualitative stability and robustness to problems mentioned. The proposed system was implemented and the evaluation demonstrated that it is capable of solving these problems partially.
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16

Klapil, Filip. „Frekvenční syntezátor pro mikrovlnné komunikační systémy“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-413162.

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The main aim of the thesis is to develop a solution of a frequency synthesizer for a microwave communication systems. Specifically, it suggests a design for frequency synthesizer with phase-locked loop. At beginning of the thesis the principle and basic properties of this method of signal generation are explained. Then it is followed by a brief discussion of the parameters of synthesizers and their influence on design. Another part of the work is the analysis of circuit the frequency synthesizer with the phase-locked loop MAX2871, which is followed by a proposal for the design of the frequency synthesizer module hardware. The last part of the work deals with practical implementation, verification of function and measurement of achieved parameters and their evaluation.
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17

Slimařík, František. „Mechanismy zvýšení spolehlivosti vestavěných systémů pracujících v reálném čase“. Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2010. http://www.nusl.cz/ntk/nusl-237183.

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This thesis deals with issue of reliability of real-time embedded systems. Contains a summary of basic concepts related to field in real-time embedded systems and mechanisms for dependability enhancement through redundancy techniques and control flow checking. Describes the implementation of selected control flow checking mechanisms, the technique uses software watchdog timers, use of hardware n-modular redundancy in software environment and technique of process pairs using operating system uC/OS-II. The different mechanisms are validated by method injection of faults into the chosen data structures of system uC/OS-II.
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18

Smékal, David. „Zabezpečení vysokorychlostních komunikačních systémů“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-220420.

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The diploma thesis deals with 128–bit AES data encryption and its implementation in FPGA network card using VHDL programming language. The theoretical part explains AES encryption and decryption, its individual steps and operating modes. Further was described the VHDL programming language, development environment Vivado, FPGA network card Combo–80G and configurable framework NetCOPE. The practical part is the implementation of AES–128 in VHDL. A simulation was used to eliminate errors, then the synthesis was performed. These steps were made using Vivado software. Last step of practical part was testing of synthesized firmware on COMBO–80G card. Total of 4 projects were implemented in FPGA card. Two of them were AES encryption and decryption with ECB mode and another two describe the encryption and decryption with CBC mode.
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19

KŘIVANCOVÁ, Irena. „Násobení a dělení na počátku školní docházky“. Master's thesis, 2006. http://www.nusl.cz/ntk/nusl-43205.

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20

Čech, Zbyněk. „Posouzení přesnosti metod zjišťování zásob v závislosti na vybraných faktorech“. Master's thesis, 2007. http://www.nusl.cz/ntk/nusl-94102.

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21

Krčmař, Jakub. „Dopady due diligence (předinvestiční prověrky) na hodnotu společnosti při prodeji zahraničnímu subjektu“. Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-167618.

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22

Svatoš, Martin. „Posouzení přesnosti metod zjišťování zásob v závislosti na vybraných faktorech“. Master's thesis, 2014. http://www.nusl.cz/ntk/nusl-179383.

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The aim of the thesis is to evaluate the influence of selected factors on the accuracy of the results of relascope measurements. The research was carried out on a forest owned by the town of Sedlec-Prcice. In the stands on the plane is the most accurate relascoping by Bitterlich stick with a 2-fold factor and in the stands on the slope also Bitterlich stick, but with a multiplier factor of 4. Evenly mixed stands and stands with stocking evenly over the surface have the choice of an appropriate multiplier factor of influence. Outdoor survey was conducted in 5 stands (stand or groups) and data processing on the basis of outdoor measurements were performed with computer technology.
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23

Rapavý, Martin. „Globální krylovovské metody pro řešení lineárních algebraických problémů s maticovým pozorováním“. Master's thesis, 2019. http://www.nusl.cz/ntk/nusl-397839.

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In this thesis we study methods for solving systems of linear algebraic equati- ons with multiple right hand sides. Specifically we focus on block Krylov subspace methods and global Krylov subspace methods, which can be derived by various approaches to generalization of methods GMRES and LSQR for solving systems of linear equations with single right hand side. We describe the difference in construction of orthonormal basis in block methods and F-orthonormal basis in global methods, in detail. Finally, we provide numerical experiments for the deri- ved algorithms in MATLAB enviroment. On carefully selected test problems we compare convergence properties of the methods. 1
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24

Brada, Jiří. „Ocenění společnosti“. Master's thesis, 2016. http://www.nusl.cz/ntk/nusl-347615.

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The aim of this thesis was to comprehensively describe the valuation process, emphasize the significance of each part and point out possible pitfalls. The methodological valuation theory is not regulated in the Czech Republic, with a few exceptions, thus the credibility of the final value depends on the economic quality of applied process. Before the valuation methodology itself is applied, there has to be carried out both strategic and financial analysis providing the inputs for the applied models. Strategic analysis examines both general macroeconomic conditions, which could affect future performance of the company, and relevant market the company operates on within the competitive landscape. Strategic analysis provides the inputs into subsequent financial plan, primarily based on historical financial performance of the company, and serve as its corrective. In this thesis there were analyzed yield-based and market multiples methods, complemented by asset-based approach. Yield-based methods, i.e. DCF and EVA, are based on discounted future value which will the company generate. That implicates the suitability of its application for the companies with predictable financial plan. That means mostly companies with stable financial history, in case of young innovative startup the usage of such a method...
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Dvořák, Jan. „Vlastnosti a konstrukce core problému v úlohách fitování dat s násobným pozorováním“. Master's thesis, 2021. http://www.nusl.cz/ntk/nusl-448567.

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In this work we study the solution of linear approximation problems with multiple observations. Particulary we focus on the total least squares method, which belogs to the class of ortogonaly invariant problems. For these problems we describe the so called core reduction. The aim is to reduce dimesions of the problem while preserving the solution, if it exists. We present two ways of constructing core problems. One is based on the singular value decomposition and the other uses the generalized Golub-Kahan iterative bidiago- nalization. Further we investigate properties of the core problem and of the methods for its construction. Finally we preform numerical experiments in the Matlab enviroment in order to test the reliability of the discussed algorithms. 1
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