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Combined heat and biogas production using a bioreactor
Novák, David ; Radil, Lukáš (referee) ; Baxant, Petr (advisor)
This diploma thesis deals with the bioreactor system and its use for the production of heat and biogas. The bioreactor uses the composting and metanogation process of fermentation that humanity has known for hundreds of years, but the combination of these processes is a relatively unexplored area. The theoretical part of the thesis analyzes the existing possibilities of utilization of the heat generated in the compost, and also describes the used technology of small biogas stations and other small systems for biogas production. It follows the practical part of the work, when it was the task to design a bioreactor working at low temperatures during the winter. Part of the solution is the initial design and testing of the basic test structure of the bioreactor, followed by the implementation of a more advanced and more complex system, including a control and measuring center realized by a microcontroller.
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Design of a laboratory exercise with frequency hops
Novák, David ; Číž, Radim (referee) ; Škorpil, Vladislav (advisor)
Novák, D. Brno: Department of Telecommunications, The Faculty of Electrical Engineering and Communication, Brno University of Technology, 2008, Design of a laboratory exercise with frequency hops. Bachelor’s thesis, supervisor: Doc. Ing. Vladislav Škorpil, CSc., 35 pages. Bachelor’s thesis consider about Design of a laboratory exercise with frequency hops. Theoretical part treat about technology of frequency hops. Below about types, properties, method about transfer and practical use of this technology. This event is maked from information acquired from practical part and from literature. Practical part serves such as extended manual to laboratory exercises into simulator system Emona TIMS. Exercises are concerned about measuring connection establishment between transmitter and receiver technology of frequency hops, speed and quality connection. Accent is set to detailed explanation objectives measuring. Bachelor’s thesis is complemented about measured out findings, these measurements.
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Design of the Computer Network at the Elementary School
Novák, David ; Jordán, Vilém (referee) ; Ondrák, Viktor (advisor)
This thesis focuses on the issue of designing of the computer networks, it proposes specific solution for the building of elementary school. This work describes procedure for designing computer network and preparation which the school must do before starting the installation of the network. In work is described, which components are necessary to create the computer network and what properties must have. In this thesis are taken into account best possible use and acceptable price for school.
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The study of polymorphism and optimization of active pharmaceutical ingredients crystallisation
Novák, David ; Ing.Ladislav Cvak, Ph.D. (referee) ; Ing.Roman Gabriel (advisor)
Active pharmaceutical ingredients (APIs) are frequently delivered to the patient in the solid-state as part of an approved dosage form (tablets, capsules, etc.). Understanding and controlling the solid-state chemistry of APIs is therefore an important aspect of the drug development process. APIs can exist in a variety of distinct solid forms, including polymorphs, solvates, hydrates, co-crystals and amorphous solids. Each form displays unique physicochemical properties that can profoundly influence the bioavailability, manufacturability, stability and other performance characteristics of the drug. Most APIs are purified and isolated by crystallisation from an appropriate solvent during the final step in synthetic process. The main objective of a crystallisation process is to produce crystals with desired properties such as particle size distribution (PSD), shape and purity. All pharmaceutical dosage forms must be produced in uniform units, and good content of uniformity is only possible when the size of the active component is carefully controlled. For on-line control of crystallisations of Quetiapine Fumarate to achieve desired PSD and no changed physicochemical purity was used the Lasentec Focus Beam Reflectance Measurement (FBRM) system.
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Optimisation of a Voice Transmission in Communication Networks
Novák, David ; Polívka, Michal (referee) ; Škorpil, Vladislav (advisor)
This master’s thesis deals abou the transmission of voice in communications networks. The theoretical part describes criteria for optimizing voice, such as quality of service, type of service, level of service, service type, and mean opinion score. Next I describe the Internet Protocol, comparing IPv4 and IPv6, VoIP, including security, protocols and parameters necessary for transmission. Other part is about neural networks. There are basically described the neural network, Hopfield neural network and Kohenen neural network. The research is based on a comparison of the network without ensuring the quality of service and with ensuring quality of service. Then, there are compared two types of switches. Classical switch-controlled sequentially, and switch controlled by neural networks. The overall simulation program is implemented in Opnet Modeler. The conclusion deals with the creation of laboratory tasks in this program to compare the different systems of ensuring quality of service.
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Path Tracing on GPU
Novák, David ; Milet, Tomáš (referee) ; Tóth, Michal (advisor)
The aim of this bachelor's thesis is an implemetation and following acceleration of Path Tracing algorithm. This algorithm will be implemented on the GPU using OpenGL. Above rendered scene will be built Octree data structure. Then the acceleration, which was achieved using this data structure, will be measured.
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Quantum transport in nanoscopic systems
Novák, David ; Pokorný, Vladislav (advisor) ; Marek, Štěpán (referee)
Molecular electronics is currently a rapidly evolving field of science that uses both experimental and theoretical methods. Their combination is in many cases unavoidable. This paper will provide the reader with an overview of the experimental methods to inves- tigate nanojunctions and the theoretical description of transport in them. Graphene is a promising candidate in replacing or improving silicon electronics because of its properties. For this reason, our examined systems are derivatives of graphene. The Kwant program- ming package can simulate quantum transport in nanoscopic systems. Its simplicity of use and low computational requirements make it an ideal environment for simulation. We have simulated quantum transport in graphene nanoribbons using this package and obtained their electronic properties. 1
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Bin picking of non-oriented components using a parallel manipulator
Novák, David ; Marada, Tomáš (referee) ; Štěpánek, Vojtěch (advisor)
This master's thesis deals with the design of sorting unoriented components using a parallel manipulator. In the literature review section, it describes machine vision methods and important aspects when selecting a suitable camera for machine vision, which will be used for robot navigation. This section also discusses robot programming methods and describes possible approaches to programming robot movement. The practical part includes the design of the fourth axis of a delta manipulator in the NX Siemens environment, which allows for the orientation of manipulated objects. The software section presents the design of PLC control in the TwinCAT3 program. In this environment, functionalities for inverse kinematics, trajectory planning, image processing, and HMI for robot operation are utilized. Furthermore, a functional model was created in the virtual NX MCD environment, which communicated with TwinCAT3 via an OPC server.
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Web Application for Collaborative Schedule Management
Novák, David ; Polčák, Libor (referee) ; Dolejška, Daniel (advisor)
This thesis addresses the development of a web application for collaborative schedule management for universities and other institutions. The application aims to implement a schedule editor that allows users to collaborate in real-time using the WebSocket protocol and automatically evaluates conflicts between lessons. Before creating the application itself, existing solutions in the field of collaborative and scheduling editors were studied. The solution of the company IS4U, with whom this thesis is being realized, was studied in the most detail. A design for its improvement was created using an ER diagram and wireframes. The implementation predominantly utilizes TypeScript. On the server side, Node.js runtime environment and the Express.js framework are utilized. The client is implemented using the Vue.js framework. The thesis also includes user testing of the application and considerations for future improvements.
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Psychic deprivation and subdeprivation of children as an educational challenge
NOVÁK, David
The goal of this thesis is to understand the experience of those educators who had the opportunity to interact with deprived children with the help of narrative research. Specifically, the thesis is focused on people providing foster care. The theoretical part of the thesis presents basic psychological constructs that help shed light on the issue of deprivation syndrome. The thesis uses qualitative tools in the practical part to research the mentioned phenomenon.
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