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Acceleration of Particle Swarm Optimization Using GPUs
Krézek, Vladimír ; Schwarz, Josef (referee) ; Jaroš, Jiří (advisor)
This work deals with the PSO technique (Particle Swarm Optimization), which is capable to solve complex problems. This technique can be used for solving complex combinatorial problems (the traveling salesman problem, the tasks of knapsack), design of integrated circuits and antennas, in fields such as biomedicine, robotics, artificial intelligence or finance. Although the PSO algorithm is very efficient, the time required to seek out appropriate solutions for real problems often makes the task intractable. The goal of this work is to accelerate the execution time of this algorithm by the usage of Graphics processors (GPU), which offers higher computing potential while preserving the favorable price and size. The boolean satisfiability problem (SAT) was chosen to verify and benchmark the implementation. As the SAT problem belongs to the class of the NP-complete problems, any reduction of the solution time may broaden the class of tractable problems and bring us new interesting knowledge.
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Advanced laser diagnostic systems to measure flow field
Loutocký, Petr ; Lízal, František (referee) ; Jedelský, Jan (advisor)
The aim of this work is to give readers a comprehensive view of the present laser methods for measuring the velocity of fluid flow. The methods are classified and compared according to various criteria. Individual techniques are briefly outlined their principles of measurement, options and range of applications. Furthermore, this work discusses the advantages and disadvantages, appropriate areas of application and the basic parameters. At the end we can find a sample analysis of data measured by one method.
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The Delivery of the Mixture Containing Abrasive Particles.
Hrabina, Martin ; Sluše, Jan (referee) ; Štigler, Jaroslav (advisor)
The aim of this bachelor thesis is focused on description of the transport equipment parts used in some industries for delivering of the mixture containing abrasive particles. The thesis is divided into some captures. Each of them deals with the transport issues. The first part of the thesis is focused on the flow of liquid in transport equipment. Second part describes particular parts of pumps and compares various kinds of them, highlighting their advantages. One of the significant topics of the thesis is the characterisation of pipeline using for the above mentioned transport.
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Mutual interaction of multiple cracks growing in the particulate composite with brittle matrix under conditions of sub-critical crack growth
Slávik, Ondrej ; Ševeček, Oldřich (referee) ; Majer, Zdeněk (advisor)
In the first part of the submitted diploma thesis, the knowledge in the sphere of the fracture mechanics, related to the practice part of this thesis are summarized. In that the 2D parametrical numerical model of the particle composite with multiple cracks was created, using the finite elements method. Thanks to this model it is possible to find specific configurations which are showing the existance of multiple mutual interactions between these cracks, just by simple manipulation of the input data. In the calculations the influence of the residual stresses was considered which are formed during production of the material. The effect of the subcritical crack growth was taken into account as well in this thesis.
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Handling with hazardous materials on construction site
Máčaiová, Klaudia ; Biolek, Vojtěch (referee) ; Tuscher, Martin (advisor)
The aim of the diploma thesis was to point out possible legislative differences between the Czech and Slovak Republics and to provide examples of asbestos disposal prices. The theoretical part briefly summarizes the waste, it is legislation and the share of construction waste. The chapter entitled Asbestos provides a brief overview of the history, mining and diseases caused by asbestos. In the practical part I devote with the legislative methodology of asbestos disposal according to the Czech Republic. Based on the relevant laws in the states, I subsequently evaluated the differences between the countries. I also devote with the procedure of disposal of sewer pipes and roofs, for which I subsequently created a budget with reference to the price of asbestos disposal.
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Particle Systems in Computer Games
Zachariáš, Michal ; Štancl, Vít (referee) ; Mikolov, Tomáš (advisor)
Aim of this bachelor thesis is to explain issue of particle systems, their history and today's trend, which more and more tends to acceleration using GPU of graphical adapters, to the reader. Furthermore it describes design and implementation of particle system to minimize number of computational operations needed to simulate behavior of particles.
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Particle Swarm Optimization on GPUs
Záň, Drahoslav ; Petrlík, Jiří (referee) ; Jaroš, Jiří (advisor)
This thesis deals with a population based stochastic optimization technique PSO (Particle Swarm Optimization) and its acceleration. This simple, but very effective technique is designed for solving difficult multidimensional problems in a wide range of applications. The aim of this work is to develop a parallel implementation of this algorithm with an emphasis on acceleration of finding a solution. For this purpose, a graphics card (GPU) providing massive performance was chosen. To evaluate the benefits of the proposed implementation, a CPU and GPU implementation were created for solving a problem derived from the known NP-hard Knapsack problem. The GPU application shows 5 times average and almost 10 times the maximum speedup of computation compared to an optimized CPU application, which it is based on.
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Production technology of Magnetorheological fluids
Nováček, Vladislav ; Mazůrek, Ivan (referee) ; Roupec, Jakub (advisor)
The thesis deals with the overview over the current knowledge at the field of magnetorheological (MR) fluids. It includes definition of basic characteristics of MR fluids and technological aspects in production of the most important particles and carrier fluids. The aim of the thesis is to describe technological methods used in MR fluids production that can be used for different purposes at BTU. Finally, the thesis tries to estimate possible ways in MR fluids development in the future.
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Ventilation of a clean room in electronic industry
Tichý, David ; Štětina, Josef (referee) ; Charvát, Pavel (advisor)
The work describes an air conditioning and circulation system of a clean room environment in of a semiconductor production site. It is based on given requirements for air cleanness, temperature preasure and relative moisture. The first half of the work describes the way the system should work, classification of construction and operation of the site. The second half describes the calculations of the given parameters on which the system is designed. The calculations deal with - Air exchange and maintaining the required parameters - Designing the muti stage air filtration system - Designing the air flow speed, intake and outlet parameters of the air conditiong distribution system - Desingning the air conditioning units and their possitioning in the utility room
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