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Application of chaotic dynamics in natural and technical sciences
Kratochvíl, C. ; Švéda, P. ; Hortel, Milan ; Škuderová, Alena ; Houfek, M.
During the entire 20th century there was a gradual transformation of scientific research, which has produced in science and technology especially in the extraordinary interest in complex dynamic systems. They are non-linear systems, operating environments and the irreversible complexity in their name means they have complex structures, relations and interactions (often of different physical nature). It turned out that an inherent attribute of these complex systems and chaos (deterministic and stochastic). The article will focus on some aspects of the manifestations of chaos, its spread, as well as identification, suppression and control. We will mention also other important phenomena - the possible emergence of a new order out of chaos.
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Irrationality in the decision- making of an individual as an economic entity in the territory of the Czech Republic
Böhm, Tomáš ; Zeman, Martin (advisor) ; Babin, Jan (referee)
The main objective of this thesis is an in-depth analysis of the decision-making process on issues of economic nature for individuals in the Czech Republic. The degree of rationality occurring in consumer behavior is evaluated based on lessons learned. The theoretical section is concerned with the economic aspect of the decision-making process, which mainly includes knowledge of neoclassical theory, whose basis is the cardinal and ordinal concept of utility maximization. Subsequently there are introduced the alternative approaches to decision making, focusing on the subjective aspects of human reasoning. Using the mutual synthesis of these approaches, the author draws a term behavioral economics, specific elements of which constitute a substantive content of the whole work. The practical section verifies the hypothesis that the decision-making contradicts the theory of rational individual conduct. Data collected through the questionnaire is subjected to analytical procedures by which the stated hypothesis was verified.
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The Town and Nature
Tupá, Jana ; Czumalo, Vladimír (advisor) ; Lapka, Miloslav (referee)
This bachelor thesis analyzes relationship between town and nature within the city, the inner nature, and its changes during the history of Western culture. This relationship is revealing through culturological point of view, thus interdisciplinary. This bachelor thesis goes from fields of historical anthropology, philosophy, philosophical anthropology and architecture. I perceive town as one of the most important features of human culture, that this artificial living space created, and it's further influenced. The relationship of city and nature is treated as expression of natural forces with which the man met during its existence, in the form of architecture, and the transfer of the nature into this artificial world in the form of gardens and parks, as an inner nature. KEY WORDS Town Nature Inner Nature Human Culture
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Assessment of devices used by the Armed Forces of the Czech Republic in case of radiation emergency.
LOŠKOVÁ, Romana
This Thesis deals with the option of employing the Armed Forces of the Czech Republic (ACR) when a radiation emergency is imminent. Primarily, it focuses on evaluation of selected devices designed for radiation reconnaissance; summarising of radiation protection related legislation; and study of approved procedures. At its beginning, this Thesis tracks the origin of early detection systems at the territory of the then Czechoslovak Socialist Republic and their gradual evolution into the the existing form. From the radiation emergency point of view, this nationwide system represents a priceless help for monitoring of radioactive contamination dispersion and for warning. The following part sums up basic information on what is an ionizing radiation, how it comes into being and which basic quantities describe it. This part also contains basic type distinction, description of consequences for human organism and the most significant interactions of sources of ionizing radiation that could be misused with the most probability. This specific topic is introduced here because of the subsequent part of this Thesis being named Radiological Dispersion Device, or the dirty bomb. The significant part of this Thesis is the summary and classification of related legislation. The first documents referred to are two international standards. Publication 103 the 2007 Recommendations of the International Commission on Radiological Protection is dealing, inter alia, with dosing limits determining dose levels in planned exposure situations and reference levels used for emergency exposure situations and existing exposure situations. Publication 96 Protecting People against Radiation Exposure in the Event of a Radiological Attack is more substantial for this Thesis since it partly copes with the protection of front-line units including Integrated Rescue System (IRS) components and it specifies maximum exposure time for intervening personnel. Based on the IRS Catalogue of Typical Activities (STC 01/IZS), Materialised and Verified Use of a Radiological Weapon, the ACR would be one of the intervening components in such an attack. This Thesis analyses in detail individual ACR procedures starting with activities before employment, through threat prevention, event reaction to post-event activities like decontamination followed by monitoring of personnel contamination and their health condition. The practical part deals mainly with one of the Thesis´s goals which was evaluation of selected dosimetric devices used by the military for radiation reconnaissance. For this purpose, the quantitative research processing their main parameters was applied. The analysis within a selected sample was used for comparing and the sumary index IVi then showed the status of device applicability for contemporary use in radiation emergency. The pre-defined goals of this Thesis have been met implementing the above methods. The comparison of individual devices and their evaluation in respect to their applicability in joint radiation emergency operation with other IRS components has been carried out via discussion. It has been found out that some of the devices are obsolete and do not comply with the requirements for this job. This fact reflects the reality that these devices were designed in the period of a potential nuclear war. This corresponds with their robust structure and high level of sensitivity which is not desirable for a radiation emergency. The most severe problem, however, seems to be the fact that some devices measure quantities in old, no more used, units which could cause misinterpretation. On the other hand, other devices are modern, sensitive at low levels of dose input and offer real-time information on a well organised LCD display. To answer the question of ACR´s readiness to intervene in a radiation emergency one has to say that the ACR is ready to meet its rescue and consequence management tasks at a satisfactory level.
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Evaluation of chat bots
Hazdra, Jan ; Sigmund, Tomáš (advisor) ; Čermák, Radim (referee)
This thesis deals with the evaluation of theability of machines to imitate human behavior. Presents a brief history of the development on the field of artificial intelligence and intelligent machines, specifically chat botsand describes their evolution throughout the 20th century. It describes the most important features and building blocks of chat bots, including the most widely used programming languages for creating them.It also describes the theory of A. Turing, the test and the imitation game, on which is based methodology for evaluating chat bots. Then it also examines the criticism of the Turing's test by J. R. Searle's chinese room argument that is used for its better understanding and finding its boundaries. The work also describes H. Dreyfus's assumptions, which led to optimism in the late 90s in development in artificial intelligence and limits of artificial intelligence, on which he pointed out. The main objective is the metodology proposed in the second part, which is used for comparing selected chat bots and then used for their evaluation. Overall evaluation consists of evaluations in the sub-categories in which will be individual chat bots scored. The methodology is based on the Turing test, which slightly modifies, but also extends thanks to the ideas of other authors.
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Dynamic model of human resources in project management
Hančar, Michal ; Mildeová, Stanislava (advisor) ; Šviráková, Eva (referee)
This thesis is focused on dynamics of soft factors influencing workers during projects. These factors include motivation, workplace atmosphere, team synergy of workers and their emotions, and attribute of project manager who manages the project. Identification of soft factors and their relationships was achieved by examination of scientific literature in psychology and system dynamics. Description of managing project matters was achieved by examination of scientific literature dealing with project management. The main objective of this thesis is to create a dynamic model which simulates behavior of these soft factors influencing the project staff. The primary metric of the model is efficiency of workers participating on the project based on input parameters. Validation of the model was achieved by verification of historic behavior of key elements. Results of validation experiments correspond with historic behavior with roughly 95 % accuracy. At the end of this thesis is presented an ICT project case study. Based on the results of simulation experiments is performed a scenario analysis which tries to bring possible suggestions for project management.
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The attitudes of today's young women to abortion
VYSKOČILOVÁ, Tereza
Nowadays, the issue of abortion poses an ethical problem and the society is divided into two camps whose opinions vary considerably. On the one hand there are those who support the right to abortion, and on the other hand there are antiabortionists who believe that already at the moment of conception, a human individual who has the right to life is starting to form, and they consider abortion murder. The thesis is divided into two parts, the first one being a theoretical part organized into chapters that cover the definitions of basic terms, the differentiation between various types of abortion, abortion methods, abortion risks, mental problems related to abortion, possible reasons for abortion, ways of dealing with an unwanted pregnancy, start of a human life, legislation, right to life, the way different religions approach the issue of abortion, abortions in the world, the history of abortions in the Czech Republic up to the present time, and the divergence of opinions on abortion based on movements which support abortion or fight against it. The first aim of this bachelor thesis was to ascertain what attitude young women have to abortion. The aim served as the basis of the following research question: What attitude do present-day young women have to abortion? The second aim was to ascertain the most frequent reasons for abortion. The aim served as the basis of the following research question: What are the most frequent reasons for abortion? A qualitative research method by means of semi-structured interviews was used. The data were collected in the period from November 2013 to April 2014. The research group comprised 15 respondents who were divided into three groups based on their experience with abortion. Group A consisted of young women with no experience with abortion. Group B consisted of young women with personal experience with abortion, and group C consisted of women who had experience with abortion, abortion committee and what impact the procedure had on their lives. The data were taken down by means of audio recording or in written form, and the results were subsequently transcribed. The data were then coded so that it would be easier to find the main semantic categories. Quotations of the respondents were used in the process of interpreting the data. The research questions were processed individually for every group and the results of every group were summarized at the end of the research. The research revealed that the attitude of young women to abortion is mostly positive. Nine of the respondents also believe that it is the right of every woman to decide whether to have an abortion or to bring her child into the world. Three of the respondents expressed the contrary opinion; one of them expressed a strictly negative stance, she would not allow abortion under any circumstances. Three other respondents hold a neutral attitude to the issue in general and they agree with the respondents who expressed a positive attitude, that every woman considering abortion should have the freedom of choice. The answers to the question about the most frequent reasons for abortion show that the most frequent reason is a health issue. This reason was given by nine of the respondents. Another reason given by 8 of the respondents was social issues, including financial difficulties and inability to provide for the family. The third most often mentioned reason was unpreparedness for pregnancy, including not being mature enough to be a parent. This reason was registered in 3 respondents. The research results show that it is necessary to pay more attention to this issue, so that all women are well informed and able to form their own attitude and opinion regarding this issue. This bachelor thesis could contribute to a better awareness among women interested in this topic, as well as a source of information for midwives and as a study material for students of midwifery.
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Diagnostics for Robust Regression: Linear Versus Nonlinear Model
Kalina, Jan
Robust statistical methods represent important tools for estimating parameters in linear as well as nonlinear econometric models. In contrary to the least squares, they do not suffer from vulnerability to the presence of outlying measurements in the data. Nevertheless, they need to be accompanied by diagnostic tools for verifying their assumptions. In this paper, we propose the asymptotic Goldfeld-Quandt test for the regression median. It allows to formulate a natural procedure for models with heteroscedastic disturbances, which is again based on the regression median. Further, we pay attention to nonlinear regression model. We focus on the nonlinear least weighted squares estimator, which is one of recently proposed robust estimators of parameters in a nonlinear regression. We study residuals of the estimator and use a numerical simulation to reveal that they can be severely heteroscedastic also for data generated from a model with homoscedastic disturbances. Thus, we give a warning that standard residuals of the robust nonlinear estimator may produce misleading results if used for the standard diagnostic tools
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The attitudes of women towards hormonal contraception
BRABCOVÁ, Michaela
This bachelor´s paper focuses on mapping the women´s attitudes to hormonal contraception. The so called "family planning" is one of the basic human rights. It means that the couple is allowed to decide about the number of children and time of their birth. The phenomenon of negative family planning is connected with the issue when the couple does not wish to have children and chooses the contraception method. Hormonal contraception is one of the most expanded and the most reliable device to regulate natality. The introduction of this paper is divided into several theoretical chapters. The first of them is dedicated to the origin of contraception and afterwards, it describes the history of hormonal contraception. Other chapters concentrate on the concrete combined hormonal contraceptive and progestogen contraception. The conclusion of theoretical part is dedicated to the education. First, the attention is focused on general education, then on the education of women led by a midwife. The practical part of this bachelor´s paper occupies with the women´s attitudes towards contraception based on the questionnaire within the quantitative research. First, the goals were set. The main goal was to learn which method of contraception the women of three different age categories prefer. Partial goal 1 was to map if the education influence the usage of contraception. Partial goal 2 was to learn about the factors that helped the women to choose contraception. Partial goal 3 was to find out if the women detected any changes. Partial goal 4 was to find out if the users of hormonal contraception also use different kinds of contraception. Partial goal 5 was to discover if the women smokers know about the danger of thrombosis that is connected with smoking while using hormonal contraception, and if they use this method. The questions were set on the basis of the aims.
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