Abstract : The structural build-up of fresh cement-based materials has a great impact on their structural performance after casting. Accordingly, the mixture design should be tailored to adapt the kinetics of build-up given the application on hand. The rate of structural build-up of cement-based suspensions at rest is a complex phenomenon affected by both physical and chemical structuration processes. The structuration kinetics are strongly dependent on the mixture’s composition, testing parameters, as well as the shear history. Accurate measurements of build-up rely on the efficiency of the applied pre-shear regime to achieve an initial well-dispersed state as well as the applied stress during the liquid-solid transition. Studying the physical and chemical mechanisms of build-up of cement suspensions at rest can enhance the fundamental understanding of this phenomenon. This can, therefore, allow a better control of the rheological and time-dependent properties of cement-based materials. The research focused on the use of dynamic rheology in investigating the kinetics of structural build-up of fresh cement pastes. The research program was conducted in three different phases. The first phase was devoted to evaluating the dispersing efficiency of various disruptive shear techniques. The investigated shearing profiles included rotational, oscillatory, and combination of both. The initial and final states of suspension’s structure, before and after disruption, were determined by applying a small-amplitude oscillatory shear (SAOS). The difference between the viscoelastic values before and after disruption was used to express the degree of dispersion. An efficient technique to disperse concentrated cement suspensions was developed. The second phase aimed to establish a rheometric approach to dissociate and monitor the individual physical and chemical mechanisms of build-up of cement paste. In this regard, the non-destructive dynamic rheometry was used to investigate the evolutions of both storage modulus and phase angle of inert calcium carbonate and cement suspensions. Two independent build-up indices were proposed. The structural build-up of various cement suspensions made with different cement contents, silica fume replacement percentages, and high-range water reducer dosages was evaluated using the proposed indices. These indices were then compared to the well-known thixotropic index (Athix.). Furthermore, the proposed indices were correlated to the decay in lateral pressure determined for various cement pastes cast in a pressure column. The proposed pre-shearing protocol and build-up indices (phases 1 and 2) were then used to investigate the effect of mixture’s parameters on the kinetics of structural build-up in phase 3. The investigated mixture’s parameters included cement content and fineness, alkali sulfate content, and temperature of cement suspension. Zeta potential, calorimetric, spectrometric measurements were performed to explore the corresponding microstructural changes in cement suspensions, such as inter-particle cohesion, rate of Brownian flocculation, and nucleation rate. A model linking the build-up indices and the microstructural characteristics was developed to predict the build-up behaviour of cement-based suspensions The obtained results showed that oscillatory shear may have a greater effect on dispersing concentrated cement suspension than the rotational shear. Furthermore, the increase in induced shear strain was found to enhance the breakdown of suspension’s structure until a critical point, after which thickening effects dominate. An effective dispersing method is then proposed. This consists of applying a rotational shear around the transitional value between the linear and non-linear variations of the apparent viscosity with shear rate, followed by an oscillatory shear at the crossover shear strain and high angular frequency of 100 rad/s. Investigating the evolutions of viscoelastic properties of inert calcite-based and cement suspensions and allowed establishing two independent build-up indices. The first one (the percolation time) can represent the rest time needed to form the elastic network. On the other hand, the second one (rigidification rate) can describe the increase in stress-bearing capacity of formed network due to cement hydration. In addition, results showed that combining the percolation time and the rigidification rate can provide deeper insight into the structuration process of cement suspensions. Furthermore, these indices were found to be well-correlated to the decay in the lateral pressure of cement suspensions. The variations of proposed build-up indices with mixture’s parameters showed that the percolation time is most likely controlled by the frequency of Brownian collisions, distance between dispersed particles, and intensity of cohesion between cement particles. On the other hand, a higher rigidification rate can be secured by increasing the number of contact points per unit volume of paste, nucleation rate of cement hydrates, and intensity of inter-particle cohesion. / Résumé : La structuration des matériaux cimentaires a un grand impact sur leur performance mécanique après le coulage. Par conséquent, la formulation des mélanges devrait être conçue afin d’adapter la cinétique de structuration conformément à l’application considérée. La structuration des suspensions à base des matériaux cimentaires est un phénomène complexe affecté par les deux processus physiques et chimiques. La cinétique de structuration est fortement liée à la formulation des mélanges, des paramètres d’essai et de l’historique du cisaillement. Une meilleure évaluation de ce phénomène est fonction du pré-cisaillement appliqué, afin d’obtenir un état complètement dispersé ainsi que la contrainte appliquée lors de la transition de l’état solide-liquide de la suspension. L'étude des mécanismes physiques et chimiques de la structuration des suspensions à base de ciment peut améliorer la compréhension fondamentale de ce phénomène. Ceci permettra un meilleur contrôle des propriétés rhéologiques en fonction du temps des matériaux cimentaires. Cette recherche porte sur l'utilisation de la rhéologie dynamique pour étudier la cinétique de structuration des pâtes de ciment à l’état frais. Le programme de recherche a été mené en trois phases différentes et complémentaires. La première phase a été consacrée à l'évaluation de l'efficacité de diverses techniques de cisaillement. Les profils de cisaillement étudiés inclus la rotation et l’oscillation et la combinaison des deux modes de cisaillement. Les états initiaux et finaux de la structure de suspension avant et après la dispersion ont été déterminées en appliquant un cisaillement oscillatoire de faible amplitude (SAOS). La différence entre les valeurs viscoélastiques avant et après la dispersion a été utilisé pour exprimer le degré de dispersion. Une technique efficace pour disperser les suspensions concentrées de ciment a été développée. La deuxième phase visait à établir une approche rhéologique afin de dissocier les mécanismes physiques et chimiques individuels de la structuration de pâte de ciment. En effet, la rhéomètrie dynamique non destructif a été utilisé pour étudier à la fois l’évolution du module élastique et de l'angle de phase des suspensions inertes à base de carbonates de calcium et des suspensions de ciment. Deux indices de structurations indépendantes ont été proposés. La structuration de différentes suspensions à base de ciment réalisées avec différentes teneurs en ciment, pourcentages de remplacement de fumée de silice, et dosages de superplastifiant a été évaluée en utilisant les indices proposés. Ces indices ont ensuite été comparés à l'indice de thixotropie bien connu (Athix.). En outre, les indices proposés ont été corrélés à la pression latérale déterminée pour différentes pâtes de ciment coulées dans une colonne sous pression de hauteur 1 m. Le protocole de pré-cisaillement et les indices de structuration proposés (Phases 1 et 2) ont ensuite été utilisés pour étudier l'effet des paramètres de formulation sur la cinétique de structuration dans la Phase 3. Les paramètres étudiés inclus ; la teneur et la finesse du ciment, la teneur en sulfate alcalin, et la température de la suspension de ciment. Le potentiel zêta, les mesures calorimétriques et spectrométriques ont été également réalisées afin d’étudier les changements microstructuraux correspondants dans les suspensions de ciment, tels que la cohésion entre les particules, le taux de floculation Brownien, et le taux de nucléation. Un modèle reliant les indices de structuration et les caractéristiques microstructurales a été développé afin de prédire le comportement de structuration des suspensions des matériaux cimentaires. Les résultats obtenus montrent que le cisaillement oscillatoire est plus efficace sur la dispersion de suspension de ciment concentré que le cisaillement rotationnel. Outre l'augmentation de la contrainte, le cisaillement induit permet d’améliorer la dispersion de la structure de suspension jusqu'à un point critique. Au-delà de cette valeur critique les effets épaississants dominent. Une méthode efficace de dispersion est ensuite proposée. Cette méthode consiste à appliquer un cisaillement rotationnel autour de la valeur de transition entre les variations linéaires et non linéaires de la viscosité apparente avec le taux de cisaillement, suivie d'un cisaillement oscillatoire à la contrainte de cisaillement croisée et la fréquence angulaire élevée de 100 rad/s. Analyser l’évolution des propriétés viscoélastiques des suspensions inertes de carbonates de calcium et de ciment ont permis de développer deux indices pour quantifier la structuration des suspensions de ciment. Le premier indice (le temps de percolation) représente le temps de repos nécessaire pour former le réseau élastique. Le deuxième indice (taux de rigidification) décrit la rigidification de la structure, i.e. sa capacité à supporter des contraintes. D’autre part, les résultats montrent que la combinaison du temps de percolation et du taux de rigidification permet de mieux comprendre le processus de structuration des suspensions de ciment. De ce fait, ces indices se sont avérés être bien corrélés avec la pression latérale de coffrage des suspensions à base de ciment. Les variations des indices de structuration proposés avec les paramètres de mélange ont montré que le temps de percolation est très probablement contrôlé par la fréquence des collisions Browniennes, la distance entre les particules dispersées, et l'intensité de la cohésion entre les particules de ciment. D'autre part, un taux plus élevé de rigidification peut être assuré en augmentant le nombre de points de contact par unité de volume de la pâte, le taux de nucléation d’hydrates de ciment et l'intensité de la cohésion inter-particulaire.

The diploma thesis Activating methods in business education is focused at training Prince project management for the company Symphera. The aim is to create methods for activation of Prince2 training and incorporate them into new methodologies of training. In the theoretical part we will introduce various activating methods. We will explain what they mean and what training methods are used within them. In the part Creation of activation methods we will describe what was the process of working on the inclusion of activating methods in the training course of Prince2 project methodology. We will review the selection and subsequent formation of individual methods. The aim of comparing the success of the course is to determine whether students who have completed a course of activating methods achieve better test results than those who completed the course the classic method.

This diploma thesis is focused on the automatization of digitization workflow in the National Library of Technology, Prague, Czech Republic. This thesis examines possibilities of digitization processes automatization by means of scripts written in Perl programming language and Apache Ant build tool. The advantages and disadvantages of both solutions are analyzed as well as their suitability for automatization of digitization workflow. Based on the comparison of both solutions, the scripts in Perl programming language are selected as the most suitable solution for automatization of digitization workflow. The question whether Ant build tool could be used for the purpose of automatization of digitization workflow is also answered in this thesis. The Ant build tool could be used for the above-mentioned purpose. However, once the activities in the given process divert from the general scope of tasks provided by the Ant build tool, the complexity of the whole solution increases rapidly. This complexity is given by the necessity to use predefined tasks -- sets of functions which have to be combined to create a functional automatization script. Even though Ant is an extendable tool, it is necessary to understand the Java programming language in order to create a new Ant task successfully. On the other hand, the Perl programming language allows easier customization of the script for the purposes of automatization of digitization workflow. Also, the modularity of the Perl programming language makes it easier to create those scripts and modify, correct or develop them even further.

The miniaturization of electronics packaging is an ongoing trend. The manufacturers are increasing the packaging density to accommodate for more complex designs and increase in operating frequencies. The surface mount devices (SMDs) and today's manufacturing processes are starting to become a limiting factor to this miniaturization. The solution to these problems are embedded passives and new fully-additive manufacturing processes. In this work, a planar inductor is fabricated using a fully-additive process called Sequential Build-Up - Covalent Bonded Metallization (SBU-CBM). A new grafting material for the CBM process is tested, but found to be worse than the previously used one when tested on FR4 substrates. The best design of a planar inductor for high inductance and high Q factor is found to be the circular spiral inductor. A planar circular spiral inductor with a feature size of 75 µm is successfully fabricated using the SBU-CBM process.

The interest for additive manufacturing techniques have in recent years increased considerably because of their association to good printing resolution, unique design possibilities and microstructure. In this master project, 316L stainless steel was printed using metal laser powder bed fusion in an attempt to find process parameters which yield good productivity while maintaining as good material properties as possible. Laser powder bed fusion works by melting a powder bed locally with a laser. When one slice of the material is done, the powder bed is lowered, new powder is added on top, and the process is repeated, building the components layer by layer. In this thesis, samples produced with a powder layer thickness of 80 μm and 100 μm has been investigated. Process parameters like laser power, scanning speed and hatch spacing were investigated in order to establish clear processing windows where the highest productivity and lowest porosity are obtained. The most common defects in all sample batches were lack of fusion, gas pores, and spatter related pores. The best samples with regard to both porosity and build rate were obtained at normalized build rates between 1,3-1,6 and porosity-values in the 0,01-0,1 % range.

The thesis is a project to newbuild a city community centre (house) with 2 above ground and one underground floor. The project is being processed in a stage for construction, with a focus on building and architectural design. Part of the thesis is building-physical and fire-fighting solutions.

The master's thesis deals with the project documentation of the kindergarten in Třinec Lyžice. The structure is designed as a detached building with two floors. The ground plan is in the shape of the letter „T”. The kindergarten has two compartments, each of them is intended for 20 children, There is also multifunctional room, two rooms for leisure time activities, a kitchen and technical facilities in the building. The vertical support structures are designed from sand-lime bricks with wooden particeboards on fragment of facade. A part of the building is topped by a flat roof, and the ohter part with a pitched tieded roof

This master's thesis describes the possibility of using a continues integration and testing in real company Logio. The result of thesis is implementation of continuous integration tools Jenkins and specific testing for the company Logio. The theoretical part deals with basic principles, techniques and tools defining continuous integration. Subsequently are describing existing tools designed for PHP programming language. The thesis also analyzes various types and possibilities of application testing. Also explains the problems in product development in company Logio, which are consequence of the need for introducing continues integration techniques. The practical part of thesis describes the implementation of a test framework PwTester and its use in continuous integration. In conclusion, the results are evaluated and outlined the possibility of extension.

Continues Integration has been a vital part of software development process in order to make the development process fast and reliable. There are number of actors which play an important role with support of third party tools that helps the development process to be effective and productive in nature. The CI- toolchain is capable of doing much more than the compilation of the software project which covers the daily life tasks of the developers like testing, documentation etc. The important part of automated toolchain is the conversion of source code artifacts into executables with the help of the build system. The selection of proper build system is a matter of subjective in nature and it depends upon the number of factors that should be analyzed before proceeding forward towards the selection mechanism. This thesis focuses on software rebuilding and proves practically with experiments that could help developers and managers to decide between two important software build systems SCons and CMake. It has been experimentally proved that what are the conditions and situations where SCons performs better and what are the moments where it is wise to select CMake as a build tool. At first, individual build tools are evaluated in terms of scalability, conveniency, consistency, correctness, performance (in terms of speed and targets) and later, the build systems are experimented by automating the workflow by increasing the source code artifacts to evaluate the performance when there is limited user interaction. The behavior of the build systems are also tried with other third party tools like Tessy for testing purposes, Jenkins as CI server, and Polarion as requirement engineering tool to show how much effort is required to integrate third party tools with the build system in order to increase the functionality. The evaluation of the build systems is important because that will highlights the areas where potential candidates are better and where there is lack of functional specifications. Generally speaking, SCons has an advantage of being Pythonic in nature and provides the developer ease of use to specify the build configurations using programmatic skills. CMake on other hand are on top of shelves where there is no need to understanding and caring about the underlying platform and where developers want to generate the native build tool solutions which are readily available for exporting them into IDEs. Though both of the build systems has different goals, for example SCons is ready to sacrifices the performance while providing user correctness of the build while CMake focuses on generating native build tools by understanding the underlying platform. All of these types of situations are discussed with experiments in this thesis and serves as the practical guides for high level managers to decide the build tools among others. After evaluation, this thesis firstly suggests the general techniques where the bottlenecks could be covered and then build tool specific optimizations and recommendations are discussed to speed-up the development process.

The relative importance of local and regional factors to community build-up is a core issue in contemporary ecology. Studies based on research of newly created aquatic habitats may improve understanding of these processes. We monitored zooplankton colonization rates and community assemblage in 20 newly dug and isolated temporary pools in Kokořínsko Protected Landscape Area. The region is characterised by deep stream valleys, extensive land use, low human influence, low waterfowl migration activity and practically absence of large water bodies. After the first hyproperiod all temporary pools were rebuilt to a permanent form. In contrast to expectations, in both cases we observed immediate colonization of newly created habitats by two main groups of zooplankton (crustaceans and rotifers), but only rotifers (Rotifera) were capable of fast successful establishment of viable populations. Cladocerans (Crustacea: Cladocera) and copepods (Crustacea: Copepoda) were observed rarely and usually in low abundances (< 1 ind-l ). 10 months after the filling of permanent pools one ostracod species (Crustacea: Ostracoda), Notodromas monacha, was recorded as well. During the 8 months of temporary pools existence the presence of 1 cladoceran and 1 cyclopoid copepod species and 12 rotifer taxa was recorded, icluding...