National Repository of Grey Literature 645 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Hajkrová, Romana ; Bartoš, Vojtěch (referee) ; Dvořák, Jiří (referee) ; Kubík, Josef (referee) ; Němeček, Petr (advisor)
The aim of the dissertation is to monitor the process of information system implementation and its impact on the changes in the organizational structure and in strategic goals. Achieving this task is based on monitoring and evaluating the process of implementing the information system, on monitoring its impact on factors which affect the necessary changes in the organizational structure of enterprises and affect the strategic objectives of the enterprise. The data will be obtained on the basis of scientific methods designed for this purpose and they will be divided into parts of a questionnaire survey and of a managed interview. Within the framework of the questionnaire, the entire process will be evaluated in three dimensions: level of management, user level and the process level. The result of the dissertation will be either a confirmation or a refutation of the hypothesis related to the impact of IS implementation on the strategic objectives and on the organizational structure of the company. On this basis a defined procedure will be created for the implementation of information system monitoring and regulating changes in the strategic objectives and in the organizational structure. This procedure can serve as a guide for general use within companies, and on the basis of its results a decision will be made as to whether it is possible to use it in practice.
Role of microbiota in mouse experimental model of psoriasis
Jirásková Zákostelská, Zuzana ; Stehlíková, Zuzana ; Klimešová, Klára ; Rossmann, Pavel ; Dvořák, Jiří ; Novosádová, Iva ; Kostovčík, Martin ; Coufal, Štěpán ; Šrůtková, Dagmar ; Hudcovic, Tomáš ; Štěpánková, Renata ; Rob, F. ; Jůzlová, P. ; Herzogová, J. ; Tlaskalová-Hogenová, Helena ; Kverka, Miloslav
Anotace v anglickém jazyce\n\nMouse model of human psoriasis and gnotobiotic are important tools in understanding the role of gut and skin microbiota in pathogenesis of psoriasis. In our experiments we showed that gnotobiotic mice, as well as conventional mice treated with antibiotics, have milder skin inflammation in comparison with control conventional mice. Treatment with broad spectrum antibiotics led to dramatic shift in gut microbial composition, in particular, we observed extensive increase of order Lactobacillales. To analyze the potential effect of Lactobacillales on skin inflammation, we further monocolonized mice with L. plantarum WCFS1. Also monocolonized mice showed lower skin inflammation in comparison with conventional mice. To understand whether microbial dysbiosis is cause or effect of psoriasis needs to be further investigated.\n\n
Dvořák, Jiří ; Král, Petr ; Kvapilová, Marie ; Hrbáček, Karel ; Sklenička, Václav
Two cast and heat-treated NbC and TaC – strengthened cobalt superalloys have been developed for a precision casting of spinner discs for glass wool industry. In this work constant load creep tests in tension were carried out in argon atmosphere at three testing temperature 900, 950 and 1000 °C and at the initial applied stresses ranged from 40 to 200 MPa. All the tests were continued until the final fracture. The results of creep testing were combined with microstructural and fractographic examinations by means of light and scanning electron microscopy. A mutual comparison of creep characteristics of the investigated superalloys under comparable creep loading conditions showed that NbC-strengthened superalloy exhibited longer creep life than TaC-strengthened one. Further, it was found that carbide precipitation is the primary strengthening mechanism in both cobalt-base superalloys under investigation and the amount, morphology\nand type of carbides have the decisive effect on the creep properties including creep damage and fracture processes. By contrast, NbC-superalloy exhibited a more brittle character of creep fracture mode than TaCstrengthened superalloy. This study was initiated to investigate in more details creep deformation processes and the effect of the creep microstructure and damage evolution on both investigated superalloys. The different behaviour and properties of studied superalloys were explained based on the received results of this study.
Nehomogenita mikrostruktury a creep ECAP hliníku
Sklenička, Václav ; Král, Petr ; Ilucová, Lucia ; Saxl, Ivan ; Dvořák, Jiří ; Svoboda, Milan
High purity (99.99%) pure aluminium processed by equal channel angular pressing (ECAP) was examined in terms of the ECAP microstructure inhomogeneity and its creep behaviour. The results indicate that an inhomogeneity of the ECAP microstructure in mesoscopic scale may influence the creep behaviour of the pressed material.
Functional ANOVA
Dolník, Viktor ; Dvořák, Jiří (advisor) ; Nagy, Stanislav (referee)
We introduce the concept of functional data and the problem of functional analysis of variance, which differs from the univariate case in the fact that random functions, not random variables, are the subject of comparison. We continue by deriving an asymptotic test for functional one-way ANOVA from the elementary univariate F-test. We describe the simulation envelope test, whose global version suffers from the multiple comparisons problem. Then, an ordering is defined, based on which we create the rank envelope test, a stronger alternative to the simulation envelope test. We also describe how the rank test can be interpreted graphically. Using the rank envelope test, we devise another test for functional one-way ANOVA, which is also graphically interpretable and thus does not need a post-hoc analysis to identify which groups caused rejection of the null hypothesis. We compare the one-way ANOVA tests on a real-case study and a simulation study. 1
Incomplete Poisson samples
Zeman, Ondřej ; Dvořák, Jiří (advisor) ; Hlubinka, Daniel (referee)
The topic of my bachelor thesis is studying truncated Poisson sample which is a part of a sample from Poisson distribution, where zero observations are missing. The main goal is estimating the size of the original sample and the parameter λ of the Poisson distribution. In the first chapter I mainly focus on deriving three types of estimators of these parameters and I describe their basic properties. Second chapter contains simulations where the estimators from the first chapter are compared based on the estimates of relative bias and relative mean square error. Eventually in the third chapter I focus on the asymptotic properties of derived estimators with emphasis on consistency of estimators. 1
Stochastic reconstruction of random point patterns
Koňasová, Kateřina ; Dvořák, Jiří (advisor) ; Prokešová, Michaela (referee)
Point procesess serve as stochastic models for locations of objects that are ran- domly placed in space, e.g. the locations of trees of a given species in a forest stand, earthquake epicenters or defect positions in industrial materials. Stochas- tic reconstruction is an algorithmic procedure providing independent replicates of point process data which may be used for various purposes, e.g. testing sta- tistical hypothesis. The main advantage of this technique is that we do not need to specify any theoretical model for the observed data, only the estimates of se- lected summary characteristics are employed. Main aim of this work is to discuss the possibility of extension of the stochastic reconstruction algorithm for inho- mogeneous point patterns. 1
Competition Playground for Artificial Intelligence
Benda, Matouš ; Dvořák, Jiří (referee) ; Matoušek, Radomil (advisor)
Master thesis deals with possibilities of playing games using artificial intelligence. Also, there is presented artificial intelligence with ability of playing selected game. Artificial intelligence presented in this work is considered as artificial neural networks. First theoretical part is focused on description worldwide successful and known artificial intelligence strategies. After that there is brief description of neural networks and analysis of some libraries for machine learning. Practical part is focused on implementation of created game with Python programming language and in the end, there is analysis of designed solution.
Mobile robot path planning
Klobušníková, Zuzana ; Šoustek, Petr (referee) ; Dvořák, Jiří (advisor)
This master thesis deals with the planning of the robot's path using selected graph algorithms of artificial intelligence. The theoretical part describes the basic methods of planning a robot's path. It is related to the graph algorithm more closely. The practical part deals with implementation of selected graph algorithms, creation of simulation environment in Python, description and evaluation of experiments.

National Repository of Grey Literature : 645 records found   1 - 10nextend  jump to record:
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