|
Míry podobnosti pro nominální data v hierarchickém shlukování
Šulc, Zdeněk ; Řezanková, Hana (advisor) ; Šimůnek, Milan (referee) ; Žambochová, Marta (referee)
This dissertation thesis deals with similarity measures for nominal data in hierarchical clustering, which can cope with variables with more than two categories, and which aspire to replace the simple matching approach standardly used in this area. These similarity measures take into account additional characteristics of a dataset, such as frequency distribution of categories or number of categories of a given variable. The thesis recognizes three main aims. The first one is an examination and clustering performance evaluation of selected similarity measures for nominal data in hierarchical clustering of objects and variables. To achieve this goal, four experiments dealing both with the object and variable clustering were performed. They examine the clustering quality of the examined similarity measures for nominal data in comparison with the commonly used similarity measures using a binary transformation, and moreover, with several alternative methods for nominal data clustering. The comparison and evaluation are performed on real and generated datasets. Outputs of these experiments lead to knowledge, which similarity measures can generally be used, which ones perform well in a particular situation, and which ones are not recommended to use for an object or variable clustering. The second aim is to propose a theory-based similarity measure, evaluate its properties, and compare it with the other examined similarity measures. Based on this aim, two novel similarity measures, Variable Entropy and Variable Mutability are proposed; especially, the former one performs very well in datasets with a lower number of variables. The third aim of this thesis is to provide a convenient software implementation based on the examined similarity measures for nominal data, which covers the whole clustering process from a computation of a proximity matrix to evaluation of resulting clusters. This goal was also achieved by creating the nomclust package for the software R, which covers this issue, and which is freely available.
|
|
How are high school students informed about virus biology
Solarová, Pavlína ; Drda Morávková, Alena (advisor) ; Fraiberk, Martin (referee)
Biology is the study of viruses, which are engaged in teaching 2-3 lessons. During those hours, students must not only absorb information about the structure and function of the virus, but also the reproduction of the organism, several representatives and, ultimately, diseases that cause that exists prevention and treatment these diseases. Students remember what it is for the vaccine, the virus infects whom, how they can get infected or what the immune system. What makes the problem of students are questions: which of the viral disease is, what constitutes a viral particle, or what is an infectious disease. In the RVP G is determined curriculum is very vaguely. The teacher thus has a certain freedom in creating the ŠVP and its preparations. To more precise what students should know for graduation, testing requirements used common catalog of the school-leaving examination in this case of biology, who has broken the outputs of the curriculum of all biological disciplines.
|
|
Spain as a tourist destination
Zbořilová, Kristýna ; Abrhám, Josef (advisor) ; Havlíčková, Blanka (referee)
This Bachelor's Thesis deals with tourism in Spain. The topic is quite broad so the main aim of the thesis is to evaluate tourism in two significantly different regions - Andalusia and Basque Country. The first chapter defines terms related to tourism that are essential to coherently understand this thesis. For example, this part defines the term tourism and its typology. The second chapter focuses on tourism in all of Spain. In particular, Spain is described in terms of history and how tourism is evaluated. In addition, Spain's most attractive places are presented. The second to last, and final chapter are similar in structure in order to perform a comparison of the chapters. The first part of both chapters describes the regions. Then, tourism is evaluated by using statistics from incoming tourists. Finally, SWOT analysis is used to comprehensively evaluate the previously mentioned information.
|
|
Výběr a implementace open source nástroje pro řízení portfolia projektů
Marek, Jan ; Chlapek, Dušan (advisor) ; Kučera, Jan (referee)
Methods and ways of implementation of changes and innovations in companies through project management are in today's society very well established. There exists methodologies, techniques and tools for the management of individual projects. However in a role of project manager, I very often faced the fact that companies are performing the project portfolio management in very intuitive way. This in itself leads to failed and prematurely terminated projects, initiation of the wrong projects or realisation of correct projects, but at the wrong time. Very often I have also recognized, that there is lack of awareness of fact, that there are also Open Source applications that can help with the organization's portfolio. This thesis deals with the definition of requirements, search and selection of proper OSS application and subsequent implementation. In the first part of this thesis I prepare a theoretical framework about PPM, and on that basis then identify and verify a set of requirements for selection of right OSS PPM application. The next section of thesis describes searching for suitable applications from a variety of sources, assessment against the requirements and the final selection. In the last part the implementation project is drafted, which aims to serve other colleagues in project management as one of the possible implementation paths. The outputs are then continuously confronted with experts in matter of projects and project management in the field of IT in order to maximize symbiosis between theory and real life experiences. Virtually every project management methodology defines the collection of already-proven techniques, best practices or lessons learned from the previous similar implementations. The main contribution of this thesis I see in fact that it contains not only the design of the project implementation, but also describes a logical path, what leads to the result. Therefore this thesis could be used as a base or discussed best practice, when a project of implementation of PPM application in place.
|
|
History of vegetational development in the Cheb basin from sedimentary record of the SOOS National Nature Reserve
Suda, Tomáš ; Kuneš, Petr (advisor) ; Bešta, Tomáš (referee)
Vegetation development in the Cheb basin ( W Czech Republic) recorded in the sediments of the SOOS ational ature Reserve This thesis focuses on palaeoecological research of quaternary sediments in the Soos National Nature Reserve (Cheb basin, NW Czech Republic). Quaternary history of this locality is poorly known, despite it is a valuable and protected area with high natural qualities. The Soos basin is also known for its unique geological record, which is expected to cover information on landscape dynamics at least during the Holocene. A lake existed in the Soos basin enabling accumulation of diatomite and peat sediments of a broad palaeoecological potential. Records were analysed with method of pollen analysis and were dated using 14C. The results of this study bring information about vegetation development in the area of Cheb basin as well as development of lake ecosystem. It also gives a new insight on lake's origin and its age. The accumulation of peat sediments started in the Preboreal period and was continuous at least until the Atlantic following with a hiatus, therefore further detection of vegetation development is impossible. The beginning of diatomite accumulation, as well as the existence of the lake goes back to the Bølling interstadial, according to radiocarbon dating. However, this...
|
|
The tax system reduces motivation to return to work among mothers with young children: recommendations and evaluation
Šatava, Jiří
In the Czech Republic, the overall taxation of work, i.e individuals' income tax together with social security and health insurance contributions, places a heavy burden even on the relatively low earnings of so-called second earners in households, i.e. partners with lower earnings. These peoples' work activity is, however, generally very sensitive to the level of taxation. A large group of these earners is made up of mothers with young children. Mothers who are the second earner in their household are subject to a participation tax rate (PTR) up to 30 % higher than their partners, and yet a higher PTR results in lower motivation to work. Women with children and low earning potential are subjected to the highest PTRs in comparison with their partners.
|
|
Introduction to bio art
Šperanda, Nina ; SILVERIO, Robert (advisor) ; JANOŠČÍK, Václav (referee)
Bio art is a contemporary art practice that works with living organisms (except humans) or is created in cooperation with living organisms. It is relatively new art movement that is rooted deeply inside the history of evolution, domestication of animals and plants, technological discoveries, their development and science. Never before was art questioning its ethics and aesthetics in such profound, molecular and sub-molecular way.
In this work I will consider the historical influences and conditions that led to current developments in the field. I will also try to explain the problematics of defining what bio art is and try to clarify the associated terminology. Most relevant and ground breaking works in the field will be mentioned as some new recent developments.
Aesthetics of bio art is also an important subject often set aside by the ado around ethics of it. It is an extremely important subject to be considered when talking about bio art and I will try to sketch out a brief outline of it with references to philosophy and contemporary bio art theory.
|
|
Vegetation succession and soil development on heaps from brown coal mining
Veselý, Martin ; Chuman, Tomáš (advisor) ; Šefrna, Luděk (referee)
Plant diversity and selected soil parameters from 36 sites placed on brown coal mining spoil heaps were analyzed and compared. Spontaneously revegetated or technically reclaimed spoil heaps of different age were situated in brown coal mining district of eastern Most basin in north western part of the Czech republic. Samples were sorted in groups according to vegetation growth and type. Plant diversity increases during succession development and is higher on non-reclaimed sites than reclaimed sites, where diversity decreases with time. Soil bulk density decreases during succession on all sites. Soil pH is decreasing too and this process is faster on spontaneously revegetated sites. Old successional forest type sites have very acid soils probably due to properties of original mineral matrix. Thickness of organic horizon and A horizon is increasing during succession and they appear in mid-aged sites first. Content of soil organic carbon is increasing continuously. Non-reclaimed sites reach higher contents, mainly because of higher content of fossil organic matter in spoil mineral matrix. Keywords: vegetation succession, soil development, reclamation, brown coal mining heaps
|
|
White crow dressed in black. Life's journey of František Jan Kroiher (1871-1948)
CUKR, Jiří
The present rigorous thesis is about the personality of František Jan Kroiher (1871-1948). He represented a very engaged person in a public area. His activity was very extensive and intervened in minor works in the country up to the contacts with the highest clerical and political circles. Individual chapters are devoted Kroiher´s childhood and study, career of the priest in the South Bohemia, his taking part in the reform efforts of the Czech clergy, work in a cooperative and economic sphere, a politic career in Agrarian Party and his extensive journalistic activities and sponsorship. At the end there is evaluation of Kroiher´s personality, followed by the list of sources and bibliography, index of names, a list of abbreviations and supplements. The rigorous thesis was based on prospecting quantity of the archival documents, period newspapers and literature. The present rigorous thesis is about the personality of František Jan Kroiher (1871-1948). He represented a very engaged person in a public area. His activity was very extensive and intervened in minor works in the country up to the contacts with the highest clerical and political circles. Individual chapters are devoted Kroiher´s childhood and study, career of the priest in the South Bohemia, his taking part in the reform efforts of the Czech clergy, work in a cooperative and economic sphere, a politic career in Agrarian Party and his extensive journalistic activities and sponsorship. At the end there is evaluation of Kroiher´s personality, followed by the list of sources and bibliography, index of names, a list of abbreviations and supplements. The rigorous thesis was based on prospecting quantity of the archival documents, period newspapers and literature.
|
|
Evaluation of the effectiveness of teaching vocational subjects depending on physical activity before schooling.
Janošíková, Martina ; Hanušová, Marie (advisor)
The period of transition to secondary school brings substantial changes in the requirements for study obligations, autonomy, communication, expression, or separated from their families in the form of staying at the dormitory. Students enrolled in sport centers, in addition to these changes, still struggling with the responsibilities associated with sport. Because they are students first through fourth grades of secondary schools and secondary vocational schools, an age when image self-I am, what I believe in, arises in interactions with the outside world and their own experience, plays a very important role to influence the environment, educators, teachers and trainers, with which students spend most of their time in practice. This study looks at students comprehensively in terms of personal development as a multifactorial biopsychosocial unit, in terms of cognitive and motivational processes, states and properties from the perspective of social psychology dealing with the interactions, relationships and communication, psychology of individuals within the social group and its importance for the development of the individual . It monitors conditions and educational outcomes in terms of educational psychology, dealing with forming properties, opinions, attitudes and value orientation from the perspective of educational psychology.
|
guest ::
