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Overtaking model on a circular road
Krejčiřík, Radek ; Kofroň, Josef (referee) ; Janovský, Vladimír (advisor)
In this work we consider an extended follow-the-leader traffic model which was presented in [9]. The Model simulates movements of N identical cars on a circular road. There are two new aspects in this model included: velocity of each car depends on a variable reaction time and on an aggressiveness of the driver as well. Aggressiveness has a stabilizing effect on the traffic flow and variable reaction time changes the periodic dynamics in the model, but there are still some un-physical solutions. The benefit of this work is in an application of an overtaking-algorithm to the extended model. We also show an equivalent formulation of the problem as a system of ordinary differential equations with a discontinuous right-hand side. We show an existence of periodic solutions with overtaking.
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Transcription of genetic information
Ryabov, Artem ; Chvosta, Petr (advisor) ; Slanina, František (referee)
We investigate a one-dimensional diffusive motion of a system of interacting Brownian particles driven by an external time-dependent force. We assume the hard-core interaction between the particles. We construct the exact general solution of the N -particle problem. Specifically, we assume the spatially restricted two-particles dynamics, and the harmonically oscillating driving force. The inter-particle interaction induces effective entropic forces and hence also new effects comparing to the corresponding model without the inter-particle interaction. Especially, we have found an increase (decrease) of the work done on the right (left) particle. Similar effects are exhibited by the one-particle mean position, the one-particle entropy production, and heat released to the bath. These characteristics have been discussed depending on the model parameters. Resonance-like maxima have been detected if we plot the work accepted by the individual particles as the function of the driving frequency. Similarly, the entropy production exhibits a maximum as the function of the bath temperature.
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The Attitudes of Older Pupilage Children to Health Nourishment and The Slotmachine at Elementary School
Voleníková, Marie ; Vaníčková, Eva (advisor)
The bachelor thesis deals with the issue of opinions and attitudes of older school children to vending machine and healthy rating in primary schools. The theoretical part describes in detail the basic characteristics of older school age, the issue of nutrition in school children, the formative of attitudes towards the right rating habits. It describes the correct composition bill of fare, eating disorders and the type of vending machines. The practical part of this thesis presents a survey of two primary schools in Prague, where was implemented data collection. Data collection was performed in 155 children with 75 boys and 80 girls in the age group 11-15 years. The aim of this research was to define the views and attitudes to vending machine and healthy rating based on an questionnaire. Children usually buy drinks from vending machine. The popularity of vending machine depends on the menu. It was define four hypotheses. Another survey finding that 35 % of children are on diet, 50 % of the children respect the principles of a healthy lifestyle, 32 % of children prefer sweetened beverages and 85 % of children sports. In the end, the author provides several recommendations at the schools based on school, families and communities. This mainly involves raising awareness of healthy nutrition in schools, both...
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The conditions of entering into marriage in comparison of the canonic law with the family law in the Czech Rebublic
Kotlář, Václav ; Kolářová, Marie (advisor) ; Hrdina, Antonín (referee)
Anglická anotace This thesis deals with the marriage law. Its aim is to study an approach to the institute of marriage from the point of view of the canon law in Roman Catholic Church in contrast to the family law in the Czeh Republic in focus on the conditions which are important for entering into marriage. In the first instance the thesis concerns with the specification of marriage in both branches of law, then the aims and effects of marriage, the form of entering into marriage, the suitable subjects for marriage including the subjects that have the right to marry somebody and also the issue of validity of marriage. Key word: marriage, validity, canon law, marriage law, conditions
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Essays on Quality Assurance Mechanism
Mysliveček, Jan ; Ortmann, Andreas (advisor) ; Zimmermann, Karel (referee) ; Strausz, Roland (referee)
This dissertation studies two quality assurance mechanisms know from markets with unobservable quality characteristics-certification and self-regulation. Certification is a mechanism based on a third party who tests producers and issues, for a fee, a certificate to those who meet the required quality standard. Self-regulation is a mechanism, where producers, rather than relying on a certifier, form a club, set standards, and monitor each other. In the first chapter, I compare certification and self-regulation. I show that if the testing technology is perfect and costless, the choice of standards and fees by the certifying organization (CO) is welfare inferior, while the self-regulatory organization (SRO) chooses a welfare optimal fee, and I identify conditions under which the SRO also chooses optimal standards. If the testing technology is costly and imperfect, this result is not necessarily valid and depends on the difference between the costs of the testing technology available to the CO and SRO. In the second chapter, Tomáš Konečný and I study an example of certification system - Fair Trade scheme. One of the arguments against the Fair Trade scheme is that the guaranteed minimum price tends to depress world prices and thus the incomes of non-participating farmers (e.g. The Economist, 2006). We develop a...
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Synthesis and comparison of activity of potential reactivators of acetylcholinesterase inhibited by cyclosarine
Lipka, Lukáš ; Doležal, Martin (advisor) ; Kučerová, Marta (referee)
SYNTHESIS OF POTENCIAL QUATERNARY ACETYLCHOLINESTERASE REACTIVATORS AND EVALUATION OF THEIR POTENCY TO REACTIVATE CYCLOSARIN-INHIBITED AChE Mgr. Lukáš Lipka Department of pharmaceutical chemistry and drug control, Charles University in Prague, Faculty of Pharmacy in Hradec Králové, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic Abstract of the rigorous thesis: Nine potential AChE reactivators were synthesized. Their potency to reactivate AChE inhibited by cyclosarin nerve agent was tested in vitro. According to the obtained results, 1,4- bis(2-hydroxyiminomethylpyridinium)butane dibromide seems to be most potent AChE reactivator. The reactivation potency of these compounds depends on structural factors such as presence of quaternary nitrogens, lenght of the linking chain between both pyridinium rings, and position of the oxime moiety at the pyridinium ring. The independence of potency of reactivator trimedoxim at the kind of anion present in his molecule was validate.
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Reconciliation of work and family life - reflection of the European law in the activities of the Czech government
Vošmik, Josef ; Tomeš, Igor (advisor) ; Koldinská, Kristina (referee)
The problem of reconciliation or work and family life has been of cardinal importance over the past few years not only in the Czech Republic but in most European countries. For most families it is becoming more and more difficult to reconcile the duties connected with the care of children and other dependent persons with the occupation. This situation is caused by many factors such as the growth of women employment, changes in family structure, demographic effects, development of human rights and many others. Social policy must take these aspects into account and carry out such acctivities that will enable families to face the challenges of the present society and won't make them decide either work of family. As a part of theory there are quite many particular methods and ways how to help families to cope with their employment and family duties. Some sources distinguish these strategies among individual and family, employers' strategies and strategies of the welfare state. But the European states differ as to how they view family and social policy as well. In the Czech republic there has been a traditionally high level of women employment rate but the birth of a child has a negative impact on a woman's staying or (re)entry into labour market. The possibilities of flexible work arrangements are highly...
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Use of general and specific kinetic tests for prediction techniques of close combat
Šorm, Daniel ; Barták, Erik (referee) ; Vágner, Michal (advisor)
Title of thesis! Use of general and specific kinetic tests for prediction techniques of close combat. Objective Of thesis: My thesis deals with finding content validity and curriculal validity behind sampled kinetic tests for choice of human for the course of close combat. MethodI Thesis is working up like empiric kvantitative research of observation type and notice diachronic dependences between criteria variable and choice continuous independent variables. For analyses of relations and dependences among variables were used methods descriptive and inference statistics. Criteria variables were obtained with sum of evaluations close combat techniques such as composote score. Techniques were evaluations on the scale proposed by Vagner (2008). For preliminary of date analysis was used method of multiple correllations. Algorithm of all possible regressions was used for the propose of set variables and regression triplet was used to evaluate regrression model. Dates were processed with programs such as SPSS 15.0 for Windows, NCSS (Hintze, 2004), and QC Expert 2.7. Results! Specific kinetic tests reached higher curriculal validity to the acquirement of close vombat techiques than general kinetic tests. Every test proved the content validity as satisfactory. With algorithm of all possible regressions we...
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Software Requirements in the Life Cycle of Development Process
Bystřická, Radka ; Buchalcevová, Alena (advisor) ; Stanovská, Iva (referee)
Software requirements are an integral part of the processes of development and maintenance of information systems. Working with requirements is not an easy thing and their poor understanding and incorrect implementation may adversely affect the project. Dissatisfaction arises at the both sides of project because customers do not get what they have wanted and development team does worthless and unnecessary work from their point of view. Problems with requirements and with setting up the right processes to deal with them are the area of Requirements Management. Over the years there was defined a few best practices within this scope. This thesis describes some basic techniques, methods and rules. There is also a requirements splitting into five types. For each type of requirements there are described their specifics, including the typical problems that arise in their context. There are several methodologies of development and maintenance of information systems. Each of them adapts the requirements and processes of their elaboration a little bit differently. This depends on the basis of the methodologies. There are free methodologies described in this thesis. The Rational Unified Process is chosen as delegate of classic ones. Scrum and Feature Driven Development stands for agile methodologies. For each methodology there are first briefly outlined its basics and then described the roles, artifacts and processes in the context of the requirements.
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Speech Recognition of Czech Using Finite-State Machines
Podveský, Petr
Speech recognition has become a thriving field with many real-life applications. Voice dialing in cell phones, voice control in embedded devices, speech-driven interactive manuals and many other utilities rely on solid speech recognition software. We believe that research in speech recognition can boost performance of many applications related to the area. The thesis concentrates on automatic large-vocabulary continuous-speech recognition of Czech. Czech differs from English in a few aspects. We focus on these differences and propose new language-depended techniques. Namely rich morphology is investigated and its impact on speech recognition is studied. Out-of-vocabulary (OOV) words are identified as one of the major sources deteriorating recognition performace. New language modeling techniques are proposed to alleviate the problem of OOV words. The proposed language models are tested in speech recognition systems on diverse speech corpora. The obtained results validate the original approach to language modeling. Significant overall speech recognition improvement is observed.
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