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Food Traceability in Retail Business
Macourková, Kateřina ; Filipová, Alena (advisor) ; Zeman, Jiří (referee)
The target of this master thesis is to map situation of food traceabilty in European Union and in the Czech Republic, document food traceability systems and its echo testing. International and Word organizations which focus on traceabilty and the system of control cannot be left out of consideration .
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Staff performance and motivation in the organization (and design IT to support them)
Biľ, Tomáš ; Surynek, Alois (advisor) ; Chlapek, Dušan (referee)
Paper summarizes the importance of motivation and performance of employees in the organization. The primary goal of this paper is to propose solutions to increase motivation and thus performance. Meet this target would require the implementation of many activities, from finding present, the IS architecture, through detailed analysis of individual systems, which affect workers. Important too was the definition of where all the motivation and performance in man takes and how it can be measured. In the practical part I have done, according to gained experience, using the LMI survey questionnaire to identify weak areas of performance motivation. These results, I finally offered advice and firstly from a psychological perspective, and secondly in terms of IT and its main information system, the workers who come into contact every day and therefore has a huge impact on them. Contribution of the author of this thesis was to identify and increase motivation, through analysis and recommendations specified by the selected methodologies.
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Binary-Code Decoding to a High-Level Representation
Macko, Lukáš ; Soukup, Ondřej (referee) ; Matula, Peter (advisor)
The thesis deals with reverse techniques in software engineering. It presents practical application of software reverse engineering, used tools and approaches. The topic of instruction decoding is discussed in detail. Two basic methods are presented-linear sweep and recursive descent. Their strengths and weaknesses are highlighted. Subsequently a decompiler developed by AVG Technologies is introduced. The decompiler is retargetable. This feature allows to decompile applications of multiple platforms into various target languages. The aim of the thesis is to design and implement algorithm for decoding binary files into high-level representation. The designed algorithm is based on modified recursive descent algorithm, which uses control flow information. In order to achieve more accurate decoding results, symbol table records and other additional information are used. The proposed algorithm was implemented for the AVG Technologies retargetable decompiler. The tests showed that the implemented algorithm improved the function detection in decoded programs. Furthermore, the implemented solution allows to decode files that could not be analysed using the previous version of the decompiler.
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Development of silane modified TS-1 nanoparticles as fillers for Mixed Matrix Membranes (MMM’s)
Martin-Gil, V. ; Lhotka, M. ; Hrabánek, Pavel ; Fíla, V.
In this work, Titanium Silicalite 1 (TS-1) was synthesized using different crystallization temperature (Tc = 180 °C, 160°C, 140°C), aging time (t aging = 1, 2, 3 and 7 days) and aging temperature (T aging = T room , 40 °C, 80°C) in order to get suitable nanoparticle size and good distribution of particle size for using them as a filler in MMMs. The TS-1 particles with different Si/Ti ratios (Si/Ti = 25 and 100) were functionalized using different amino silane coupling agents: 3-aminopropyltriethoxysilane (APTES), 3- aminopropyltrimethoxysilane (APTMS) and 3-aminopropylmethyldiethoxysilane (APMDES). Moreover, a new kind of silane coupling agents: 3- glycidoxypropyltriethoxysilane (GPTES), 3-glycidoxypropyltrimethoxysilane (GPTMS) and 3-glycidoxymethyldiethoxysilane (GPMDES) were also used. Tetrahydrofuran (THF), with a high dielectric constant (7.6), was used as solvent in order to control the surface modification and avoid pore blockage. The samples were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier Transform Infrared spectroscopy (FTIR), as well as carbon dioxide methane and nitrogen adsorption measurements. The obtained results showed that aging temperature at long aging times have the main effect on the morphology of the particles meanwhile crystallization temperature influences gas adsorption properties. T aging higher than T room showed a great influence on the particle size at t aging = 7 days; shorter t aging did not show an observable influence on the particle size. Crystallization temperature influences the adsorption properties; at lower crystallization temperature, higher quantity of CO 2 adsorbed and lower quantity of CH 4 adsorbed. At last, suitable TS-1 filler with good size distribution and particle size about 200nm was obtained using Si/Ti = 100 and Si/Ti = 25, T c = 140 °C, T aging = 40 °C and t aging = 7 days.
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Growth of human adipose-derived stem cells on Ti-6Al-4V alloy with various surface modifications
Kročilová, Nikola ; Bačáková, Lucie ; Pařízek, Martin ; Havlíková, Jana ; Motarjemi, H. ; Molitor, M. ; Gabor, R. ; Marvan, J.
Adipose-derived stem cells (ASCs) are of a great importance for bone tissue engineering. We compared ASCs obtained by liposuction under two pressures (-200 mmHg and -700 mmHg). The number and proliferation activity of cells isolated under -700 mmHg (ASC-H) were higher than in cells isolated under -200 mmHg (ASC-L). However, the ASC-L was more active in osteogenic differentiation, as manifested by a higher intensity of fluorescence of alkaline phosphatase and osteocalcin in these cells. The adhesion and growth of ASCs were then studied on Ti-6Al-4V samples either unmodified (K, roughness parameter R-a = 280 nm) or modified by shot blasting and tarnishing A, R-a = 200 nm), vibratory finishing (B, R-a = 100 nm) and vibratory finishing, shot blasting and polishing (C, R-a = 80 nm). All modified samples were more wettable than the K samples. On day 1 after seeding, the size of cell spreading area on some modified samples was lower than on K samples, namely on B samples in ASC-L, on B and C in ASC-H and on A in control MG-63 cells. On day 3, the cell number on some modified samples became higher than on K samples, namely on C samples (ASC-L), on B (ASC-H) and on B and C s (MG-63 cells). On day 7, the numbers of ASC-H and MG-63 cells on all modified samples evened out and became significantly higher than on K samples. On ASC-L samples, the highest cell numbers were obtained on A samples. Thus, all studied modifications of Ti-6Al-4V enhanced growth of ASCs and human osteoblast-like MG-63 cells.
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Konstrukce elektrického motocyklu
Dobeš, Jan
In diploma thesis Construction of electric motorcycles I deal with issue of electric motorcycles, their types, constructions, advantages and their use. One part includes description of tractions and transmissions. Next part describes batteries, which are necessary in electric vehicles. The aim of this work is to compare different solutions of vehicle constructions. Experiment is about two constructions of quad. This quad used combustion engine and was modified to electric power. Electric quad was tested on power testing stand. Experimental quad constructions which were used were compared and evaluated. Experiment included test of stamina of fully charged battery.
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The effect of housing system on egg shell quality and egg internal quality
Vlčková, Jana ; Tůmová, Eva (advisor) ; Skřivanová, Eva (referee)
In the study 3 experiments were carried out. The objective of the first experiment was to evaluate performance of laying hens, quality of air in poultry house, and microbial contamination of the eggshell in laying hens kept under blue, green, red, and yellow light colour in enriched cages. The laying performance characteristics (hen-day egg production, mortality, and egg weight) were not affected by light colour. Similarly, microbial contamination of the air was not significantly different related to the light colour. There were significant interactions in eggshell contamination between cage floor and light colour in Escherichia coli and Enterococcus. The highest number of Escherichia coli was detected in eggs from hens housed in the middle floor given yellow light and the lowest values on the upper floor also under yellow light colour. Similar results were observed in Enterococcus. The results of our study indicate that the light colour has a minor effect on microbial contamination but the significant influence was in the floor position. The highest microbial egg contamination was found on eggs from the middle floor.
In the second experiment, the effect of housing system (conventional cage, litter, aviary) and feed calcium content (3,0 and 3,5%) on laying performance characteristics, technological quality of eggs, microbial contamination of the eggshell and egg content during storage was evaluated. The significant interaction between housing system and feed calcium content was found in egg weight, eggshell strength, eggshell percentage, eggshell weight, Haugh units and albumen index. The housing system affected egg production, feed intake, egg weight and some characteristics of eggshell quality. From characteristics of eggshell quality the feed calcium content affected only eggshell strength and eggshell percentage. The significant interaction between housing system and storage time was found in contamination of eggshell by total number of microorganisms. The housing system affected also contamination of the eggshell where higher number of Escherichia coli and total number of microorganisms were in eggs from litter. Higher penetration of all monitored species of microorganisms on the eggshell membranes was 2nd and 7th day of storage in the group with 3.5% of calcium in the feed mixture in eggs from the litter. This could be associated with lower quality of eggshell in this type of housing.
In the experiment 3, the effect of different housing system (enriched cage, free range) on technological quality of eggs, microbial contamination of the eggshell, egg content and concentration of protein in albumen during storage was observed. The housing system affected all characteristics of eggshell quality with higher values in cage system. Higher number of pores in eggshell was found in free range. The important relationship between housing system and storage time was indicated in Haugh unit, albumen index, pH albumen and yolk index. The values for characteristics quality of albumen and yolk were better in eggs from cages. Their quality during storage decreased faster in alternative housing systems. There was detected interaction between housing system and storage time also in Escherichia coli, Enterococcus and total number of microorganisms. The highest microbial contamination in fresh eggs was found in free range. The number of microorganisms with storage time significantly decreased faster in eggs from cage system. The penetration of Escherichia coli and total number of microorganisms in albumen was lower in eggs from cage compared to free range. The significant effect of housing system was found in concentration of lysozyme in albumen with higher values in egg from free range. It is obvious that a better quality of the eggs is in the cage housing system. The eggs from this type of housing also remain during storage for longer time in better quality compared with alternative housing systems.
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Development of British beef breeds of cattle
Khajlová, Anna ; Stádník, Luděk (advisor) ; Ducháček, Jaromír (referee)
This bachelor thesis is focused on suckler cows breeding. Literary review and further details are focused on the development and application of four selected beef breeds of British origin in terms of cattle breeding in the Czech Republic.
In the introduction I would like to describe mainly the origin and domestication of cattle. Much of the work is also devoted to meat production, its control and eventually classification and monetising the final product according to a single system SEUROP applicable in countries European Union. In this chapter were simultaneously described factors of the most important facts affecting meat performance that affects the overall results of the breed, including its profitability.
The second half of the thesis summarizes the basics of cattle breeding, organization during the calendar year and grazing. There is an idea of reproduction, calving and basic measures during rearing and weaning calves. In other chapters, are explained the circumstances of the development of animal husbandry and the current status of beef breeds in the country. Also described are two basic systems of breeding beef cattle, it is a system of intensive fattening and breeding no milked cattle under extensive conditions, which are characterized in detail in a separate chapter.
In the last chapters are presented in detail four selected meat breeds originating from the British Isles, which are in our conditions most frequently raised and used for extensive breeding system no milked cattle. There is also magnified view of history. It contains breeding these selected breeds, including the identification numbers of the development from the beginning to the present.
Besides to the detailed characteristics of these selected meat breeds and their descriptions are shown and summarized like the results of performance within the CHECKS performance of beef cattle. For each breed they are processed mainly results concerning the weight of calves in individual sections and their rearing till 365 days of age, in addition, depending on gender.
At the end, there are mentioned criteria of selection program, breeding goals and standard of these four selected meat breeds of British origin.
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Analysis of the tax system in the Czech republic and the Slovak from 1989 to the present day focusing the most distinctive differences and their impact on their economies
Burešová, Petra ; Chmelová, Pavla (advisor) ; Zeman, Karel (referee)
The goal of thesis is an analysis of taxation system in Czech and Slovak Republic. Furthermore the thesis focuses on macroeconomic effects of changes in taxing. In theoretical section are defined terms related to taxing matter. In this section we are looking at taxes as government revenue, which is more discussed in practical section of this thesis. Next there are defined macroeconomic indicators - GDP, unemployment and tax quota; those are also discussed and used further. In practical section is at first oulined situation in Czechoslovakia in 1989. Next there are introduced reasons and requirements for in 1993. In next part there is discussed taxation systems analysis in Czech and Slovak Republic since 1993 itself. In this section are stated main differences and similarities between these two taxation systems. Last parts of practical section are dedicated to evolution of macroeconomic indicators analysis in context of changes in taxing. In last part - conclusion - can be found an evaluation of differences and similarities between systems. Despite the separation of both countries and frequent changes in taxation, the systems are much alike. Most distinctions can be found in income taxation, especially in a period when flat tax came into effect, which was expected, however that does not apply anymore due to its abolishment. But even after abolishment of flat tax, the most noticable distinction can still be found in income taxation.
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The vote of non-confidence in Czech parliament - the analysis of the causes and strategies
Vaňková, Petra ; Němec, Jan (advisor) ; Kuta, Martin (referee)
The main topic of this thesis is the vote of non-confidence in the Czech Republic. The main objective is to analyse functioning of the previous Czech governments and the causes that led to the vote of non-confidence. From the theoretical point of view the work concerns the parliamentary systems as such, mutual functioning of the Parliament and the government and describes the process of the vote of confidence and non-confidence. The author compares situations during the Czechoslovak Republic (1918--1938) and the present Czech Republic in terms of the regulations of the vote of confidence and non-confidence in different constitutions. The empirical part focuses on the individual governments from 1992 to the present day and the events that led to request for the vote of non-confidence. In conclusion, in Czech political practice are used all the controlling instruments such as question time or investigative committees, but the vote of non-confidence remains the most noticeable and is more of a tool for the rivalry over power than for resolving governmental problems.
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