|
|
An UML Profile for Modelling of Component-Based Systems
Pagáč, Jiří ; Bartík, Vladimír (referee) ; Rychlý, Marek (advisor)
The thesis deals with the modeling of the Component Based Software (CBS) systems in the UML language and with extension of the UML language with using of meta-modeling techniques and with using of the UML Prodile technology. Thesis also deals with Component Based Development (CBD). The main part of this study deals with specifying of methodology for creating of UML Prodiles and with demonstration of this methodology on selected Component System meta-model by creating the profile including the OCL constraints and description of problems with creating of the prodile. Thesis also describes support of the UML Profile technology in existing UML CASE tools. For demonstration purposes thesis contains the case study with example which uses in this work created UML Profile. Profile is created in accordance with specification of UML version 2.3 and OCL in version 2.2. Demonstration is performed and profile itself is created using IBM Rational Software Architect version 8.0.2.
|
|
|
Modelling of Load Impacts Acting on Transport and Handling Equipments with the Aim of their Optimization
Šťastný, Antonín ; Hrabovský, Leopold (referee) ; Kuľka,, Jozef (referee) ; Škopán, Miroslav (advisor)
This PhD thesis deals with employment of the state of the art methods of mathematical optimization and structural analysis in the field of load carrying steel structures of handling devices. The goal of the thesis is to compile a methodology which enables generating of optimal dimensions of conceptually designed load carrying parts of handling devices. The proposed methodology is composed of sub-methods which are successively applied to find an optimal configuration of structure according to a chosen criterion. The methodology incorporates sub-methods such as Design of Experiments, parametric finite-element modelling, the state of the art computational methods for stability assessment, mathematical approximation methods and state of the art optimization schemes based of both, heuristic and gradient principle. Recommendations from Eurocode 3 are used to introduce imperfections to the finite element model in order to perform the nonlinear buckling analysis. The practical part of this thesis is focused on optimization of welded beams. The principle of the methodology is in detail explained and demonstrated on an example of lifting spreader beam of load carrying capacity of 20 tons. The proposed methodology is practically realized by an algorithm created in Matlab software. Matlab is also utilized to implement some sub-methods including mathematical optimization schemes. Both, gradient and heuristic optimization algorithms are used for comparison and mutual verification. Structural analysis is performed by means of parametrical finite-element models which are built in the Ansys Parametric Design Language (APDL). The methodology takes into account buckling, which is inherent to thin walled structures under compressive load. The buckling analysis is performed by means of both, linear and non-linear procedures in Ansys. The output of the algorithm is an optimized configuration of the structure, which minimizes the objective function and complies with all requirements implemented in the form of design constraints.
|
|
|
Towards Low-Dimensional Gaussian Process Metamodels for CMA-ES
Bajer, Lukáš ; Holeňa, Martin
Gaussian processes and kriging models has attracted attention of researchers from different areas of black-box optimization, especially since Jones’ introduction of the Efficient Global Optimization (EGO) algorithm. However, current implementations of the EGO or real-world applications are rather few. We conjecture that the EGO is not suitable for higher-dimensional optimization and try to investigate whether hybridization of a low-dimensional local optimization with the current state-of-the-art continuous black-box optimizer CMA-ES (Covariance Matrix Adaptation Evolution Strategy) could help. In this paper, only a first proposal of such a GP/CMA-ES connection is described and some preliminary tests are presented.
|
|
|
MS SQL Server BI Platform Metadata Management
Havlíček, Ondřej ; Pour, Jan (advisor) ; Zajíc, Ján (referee)
The main goal of this thesis is to propose and evaluate possible solutions how to manage metadata of the Business Intelligence systems built on the MS SQL Server platform in order to meet the requirements specified by CleverDecision, s.r.o.The goal is reached by a study of the available sources, consultations with the emloyees of the company and by a practical exploration of the potentialities of the MS SQL Server and related tools. The first contribution of this thesis is an exploration of the subject of metadata in Business Intelligence. The second one is the fullfilment of the company's requirements. In doing so, Adrienne Tannenbaums's methodical process of analysis and design of a metadata solution was partially applied. Also, the possible solutions were proposed and evaluated and the recommended solution was tried out and illustrated. The thesis begins with a explanation of significance of metadata in Business Intelligence. Afterwards, metamodels, metadata standards and metadata solution are introduced. It is followed by the methodical process which analysis in particular the beneficients of metadata, their requirements, the sources of metadata in MS SQL Server and the architecture of metadata models. Then, the individual alternatives are evaluated and the recommended one is illustrated in practice.
|
|
|
Common Warehouse Metamodel
Jersák, Pavel ; Smolík, Jan (advisor) ; Kyjonka, Vladimír (referee)
The main issue of this work is Common Warehouse Metamodel (CWM) which is used both as the standard for metadata in data warehousing and business intelligence and as means of exchange of metadata between tools in DWH. As this issue of CWM and metadata management has not been published in Czech-language so far, the main aim of this work is to introduce Common Warehouse Metamodel, its utilization in BI and also to present advantages of metadata management implementation based on CWM.
|
guest ::
