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Generator of IPv6 Tables
Lorenc, Marián ; Bartoš, Václav (referee) ; Matoušek, Jiří (advisor)
The increasing number of IPv6 prefixes in routing tables require creation of efficient lookup algorithms, which are adapted to the length of prefixes. To create and to test these algorithm,s it is necessary to have extensive tables, which currently do not exist. This thesis is about design and implementation of generator of such tables. Many series of analysis were performed before the implementation. These series were about observing properties of real and generated IPv6 sets of prefixes. The final application was implemented in the way that it corresponds as much as possible to real sets. The correctness of the generator was tested by comparing the bit values of generated and real IPv6 sets.
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Control of conveyor belt for testing room
Lorenc, Michal ; Pásek, Jan (referee) ; Macho, Tomáš (advisor)
The work deals with programing of conveyor system, controlled by PLC. The first part is analysis of the controlled technology a describtion of required function. The following is an introduction to the programming environment, PLC, sensors, actuators and controls. Second part is a proposal for the solution of the function of the conveyor system and its implementation. Then the whole system is tested, evaluated and suggestions for improvement are submitted.
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Modern anorganic foundry binder systems
Lorenc, Michal ; Rusín, Karel (referee) ; Cupák, Petr (advisor)
Today, the problem caused by various kinds of activities is a great impact on the environment. This also applies for the foundry industry, which has a relatively large share of this pollution. For this reason, constantly evolving new binders, which do not have such an impact on the environment. The aim of this work is to become familiar with these types of binders that are more friendly to our already devastated the planet.
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Automation for welding cell
Lorenc, Michal ; Stibor, Karel (referee) ; Štohl, Radek (advisor)
The work deals with automation, safety and control of the welding cell. At the beginning the possibilities of communication between the PLC and the robot are discussed. Then the work moves on to the definition of the cell requirements and the design of the function concept. This design is followed by a risk assessment which is followed by the design of risk reduction measures, including the design of the specific equipment used. This moves the work to the design and implementation of the control program for the PLC and HMI. The safety features proposed in the welding cell safety section are also addressed in the program. Following the implemented control program, a verification plan is designed and evaluated. And in the last section, suggestions for further development of the welding cell are written and the achieved results are summarized at the end.
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Control of conveyor belt for testing room
Lorenc, Michal ; Pásek, Jan (referee) ; Macho, Tomáš (advisor)
The work deals with programing of conveyor system, controlled by PLC. The first part is analysis of the controlled technology a describtion of required function. The following is an introduction to the programming environment, PLC, sensors, actuators and controls. Second part is a proposal for the solution of the function of the conveyor system and its implementation. Then the whole system is tested, evaluated and suggestions for improvement are submitted.
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Information System Assessment and Proposal for ICT Modification
Hvězda, Vojtěch ; Lorenc, Marián (referee) ; Koch, Miloš (advisor)
The master thesis is solving a problem of physical security of documents in Document Management System (DMS) in the company Icontio CR s.r.o. This fact will improve the security of the whole system and also the security of data placed in it. The main purpose of this thesis is a proposal of a security module, methods of coding and other functionalities which are going to be neccesarily implemented. Side purpose is a creation of the Access management, structures of data libraries in the DMS system, structures of users in the Active Directory and a suggestion of multilevel workflow. Introduction of these changes should bring the physical security of data, new view on data and simplifying the work with them in all fields of interest.
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Evolution strategies for policy optimization in transformers
Lorenc, Matyáš ; Neruda, Roman (advisor) ; Pilát, Martin (referee)
We explore the capability of evolution strategies to train a transformer architecture in the reinforcement learning setting. We perform experiments using OpenAI's highly parallelizable evolution strategy and its derivatives utilizing novelty and quality-diversity searches to train Decision Transformer in Humanoid locomotion environment, testing the ability of these black-box optimization techniques to train even such relatively large (com- pared to the previously tested in the literature) and complicated (using a self-attention in addition to fully connected layers) models. The tested algorithms proved to be, in gen- eral, capable of achieving strong results and managed to obtain high-performing agents both from scratch (randomly initialized model) and from a pretrained model. 1
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Automation for welding cell
Lorenc, Michal ; Stibor, Karel (referee) ; Štohl, Radek (advisor)
The work deals with automation, safety and control of the welding cell. At the beginning the possibilities of communication between the PLC and the robot are discussed. Then the work moves on to the definition of the cell requirements and the design of the function concept. This design is followed by a risk assessment which is followed by the design of risk reduction measures, including the design of the specific equipment used. This moves the work to the design and implementation of the control program for the PLC and HMI. The safety features proposed in the welding cell safety section are also addressed in the program. Following the implemented control program, a verification plan is designed and evaluated. And in the last section, suggestions for further development of the welding cell are written and the achieved results are summarized at the end.
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Bifunctional ligands for copper(II) complexation
Benešová, Martina ; Kotek, Jan (advisor) ; Lorenc, Miroslav (referee)
The main aim of this thesis was preparation of makrocyclic ligand based on 1,4,8,11- tetraazacyklotetradecane skeleton, which is suitable for selective complexation of divalent copper. Cyclam macrocycle bears one weakly coordinating aminobenzylphospinate pendant arm (compound L). During the synthesis was the skeleton asymmetrically protected in positions 1,4 and 8. Attachment of phospinate pendant arm was tried with the corresponding Mannich reaction of ethyl or bis(trimethylsilyl) esters 4-nitrobenzylphosphinic acid and alkylation using mesyl ester derived from hydroxomethyl(4-nitrobenzyl)phosphinic acid (benzyl O- methylsulfonylhydroxymethyl(4-nitrobenzyl)phosphinate). In the frame of this work the synthesis of the targeted product was developed. Reproducibility was also verified for synthesis of cyclam and its asymmetrical protection in three positions. Furthermore, a study of the kinetics of de-protection of cyclam skeleton and pendant arm using basic and acid hydrolysis was done. NHNH NH N P O NH2 OH ( L ) KEYWORDS Cyclam, phosphinates, nuclear medicine, copper(II) complexes.
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