|
|
Quantitative approaches to analysis of qualitative data
Urbánek, Tomáš
The three contemporary quantitative approaches convenient to the analysis of qualitative data are presented: data theory, structural modeling based on information theory, and optimal scaling. The generality and flexibility of the approaches in the analysis of relationships among variables are emphasized.
|
|
|
Methods of data analysis in longitudinal research
Urbánek, Tomáš
Longitudinal research designs concetrate on the questions of stability and change of the characteristics under study in time. The paper concerns the issues how these two components of the temporal development are studied by the means of statistical methods. Approaches as regression analysis, growth modeling, ARIMA models analysis and a combination of variable-centered and person-centered approaches.
|
|
| |
|
|
Archeogeophysical Prospecting in Moravia in the Yers 1974-2000
Hašek, Vladimír ; Unger, J.
Geophysical methods exerted in complex with other scientific branches more than 25 at archaeological research of Czech Republic brought series of positive findings for solving of various tasks from paleolith to top medieval. The paper deals with the development of this discipline of science from methodology of in situ works over evaluation of measured data to practise presentation and confrontation the results with reality.These could be documented at a number of examples from problems of open and bastion settlements, necropolises, sacred and castle architecture, municipal historical centres, productive equipment atc.
|
|
|
Kinetická rovnovážná data plynů v roztavených sklech
Jebavá, M. ; Němec, Lubomír ; Kloužek, J.
Kinetic and equilibrium data of carbon dioxide, nitrogen and argon in the TV glass were acquired by using combination of mathematical modelling of single bubbles and experimental bubble observation in the glass melt at melting temperatures. The model of bubble shuttling in the melt was developed to this purpose, as well as the theoretical procedure of constants calculation from the mathematical bubble model. The gas data are needed especially when modelling the bubble defect behavior in glass melting furnaces.
|
|
| |
|
|
Use of LINQ technology
Fexa, Marek ; Buchalcevová, Alena (advisor) ; Jelínek, Pavel (referee)
This work is focused at new Microsoft technology for querying data LINQ (Language intergrated query). It is built as complex technology, it allows working with various data sources. For example it contains collections of objects, created for temporary storing data in memory, but also data in robust database systems. In first part of this work I describe how data was queried before LINQ was on scene and what reasons made LINQ originate. Then I analyze new features in C# that were prerequisites for creating language integrated query as part of base libraries. Next part focuses at query operators, their interfaces and provides examples of use. Then I describe LINQ technology in complex, I create and describe in detail process of execution of LINQ query. Next chapter describes querying ADO.NET Datasets. Practical examples are created for both typed and untyped Datasets. In following chapter I analyze LINQ to SQL functionality. There is described method of implementation, mainly translation LINQ query to SQL language, integrated object rational mapping tool, change tracking in mapped objects including concurrency problems. At the end of the chapter I sketch the future in data access in ADO.NET entities. In last but one chapter is created complex application of use LINQ technology. Application is built as thin client that uses LINQ as for reading and manipulating data from relational database. In the application is LINQ also used common work with component that presents data. At the end part of this work is LINQ technology summarized. Contribution and pitfalls of LINQ technology are also described.
|
|
|
Ant Colony Optimization
Zahálka, Jaroslav ; Fábry, Jan (advisor) ; Zouhar, Jan (referee)
This diploma thesis deals with Ant Colony algorithms and their usage for solving Travelling Salesman Problems and Vehicle Routing Problems. These algorithms are metaheuristics offering new approach to solving NP-hard problems. Work begins with a description of the forementioned tasks including ways to tackle them. Next chapter analyses Ant Colony metaheuristic and its possible usage and variations. The most important part of the thesis is practical and is represented by application Ant Colony Optimization Framework. It is easily extensible application written in Java that is able to solve introduced problems. In conclusion this work presents analysis of solutions on test data.
|
|
|
Two-dimensional Cutting Problems
Rada, Miroslav ; Fábry, Jan (advisor) ; Jablonský, Josef (referee)
The thesis first addresses the typology of cutting problems and their relationship to the packing problems. These are categorized (Wascher et al (2005)) according to 5 basic kriteria into the so-called "refined problem types", which is the sufficiently detailed and practical segmentation of cutting problems. The thesis deals with a selected sample of some of the most interesting algorithms from the wide range of those used to solve the cutting problems. The Viswanathan-Bagchi algorithm for the exact solution of constrainted two-dimensional orthogonal Cutting stock probléme with gillotine cuts is briefly described. It enables to process a wide range of additional problem constraints. The body of the thesis concentrates on heuristic algorithms used to solve orthogonal Open dimension problems. The Best-fit algorithm according to Burke et al. (2004) is described in detail. The work introduces two modifications of this algorithm that helped improve the solution in 42 out of the 89 benchmark problems, while a worse solution was achieved only in 10 of them. Moreover, new and more effective data structures and procedures that enable to solve the testing exercise with approx 50 000 rectangles in just about 2,5 seconds have been introduced.
|
|
|
Approaches to consolidating data base and source code base of the Techno.cz webserver
Stankay, Michal ; Gála, Libor (advisor) ; Kafka, Daniel (referee)
In this diploma thesis, I conduct a research into approaches to consolidating data base and source code base of the Techno.cz webserver, which is the subject of the consolidation. By consolidation I mean bringing the server into the state where documentation is produced according to given requirements, data base is changed in order to improve data structure and consistency and source code base is reorganised in order to unify source code upon one platform, improve file system organization and remove problematic characteristics of the source code in general. The goals of this thesis are to create and describe general process of consolidation, sequence and contents of its steps; to describe contents of consolidation in given areas: documentation, data base and source code base; to describe actual steps made to achieve the final state of the server. My approach to accomplishing these goals is the study of relevant literature and usage of my practical experience in the field of web development. My contribution to the topic is the creation of the general consolidation process that has a potential to be reused by similar projects. Another contribution may be the description of handling the risks and problems that emerged during the consolidation process. This topic may find itself as a valuable source of knowledge for fellow developers facing similar issues. The thesis is divided into eight chapters. After the introduction chapter 2 follows. Chapter 2 describes parameters of the Techno.cz webserver. Chapter 3 discusses software engineering methodologies in order to create suitable consolidation process. Chapter 4, 5, 6 discuss particular fields of consolidation: documentation, data base and source code. In chapter 7 I am trying to assess suitability of created processes and approaches for usage in future development. In the conclusion I summarize the thesis according to required structure.
|
guest ::
