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Influence of different factors for qualitative parameters of ensilage feedstuffs
KUBÁT, Václav
In the operating conditions, for the period of three years, were estimated the qualitative factors affecting the qualitative parameters of grass silages. The fermentation characteristics and the total quality of silages were evaluated by the recommendations of AgroKonzulta Žamberk and EKO-LAB Žamberk companies. The feed samples (silages) were evaluated in two sets of databases. First set of samples assessed the impact of additive substances on the basis of parameters of fermentation characteristics. This first set of samples was divided into three groups; each of them had 14 samples. First group of the samples was untreated; no preservations were used on these samples. Into the second group of the samples were included the silages treated with bacterial preparations. The third group contained the silage samples treated with bacterial-enzyme preparations. It is possible to conclude that the silage{\crq}s additives positively affect the fermentation process and thus the final silage quality. High statistical significance (P < 0.01) was found for level of proteolysis. Better values were achieved in groups with the use of preservations. Group of grass silages using preservations achieved significantly better values (P < 0.05) in lactic acid content than the group with none using of the preservations. Grass silage samples treated with the bacterial-enzymatic preparations had about 14.4 % more representations in I. class quality than the group treated with bacterial preparation. The second set of samples was classified by the phenophases: before the heading, the beginning of heading and full heading. Each group contained 12 samples. The parameters of nutritional value were evaluated. The chemical compositions (NL, PDIN and SOH) were highly significantly affected (P < 0.01) by the phenophases. The best results have been reported in grass silage harvested in the phenophase before the heading. The chemical compositions CF and NEL were better (P < 0.01) in grass silages harvested in the phenophase before the heading and in the phenophase the beginning of heading against grass silage harvested in the phenophase full heading.
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Mappings in geometry
Trkovská, Dana ; Kubát, Václav (advisor)
This diploma dissertation is dedicated to applications of geometrical mappings. It is intended as a tuitional material specially for students of the third year of the mathematics teachers programm at Mathematical and Physical faculty of Charles University in Prague. The text can be used as a supplementary material for a seminar at secondary school as well. It is based on lectures of the course Geometry II. Students are familiar with the term mapping already during the lessons at elementary and secondary schools. Therefore in the diploma dissertation we at first give only a summary of basic knowledge about mappings in geometry, in the language of mathematics textbooks. Next part of this thesis includes theoretical knowledge about mappings in geometry in the form of definitions and propositions together with their proofs. A great part is dedicated to characterization of affine mappings, specially isometries and similarities. At the end circular inversion is explained as an example of a mapping that is not affine. For better imagination the whole text is complemented with a number of figures. Theoretical part is followed by a collection of exercises. Of course, solutions of all exercises are given.
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Mappings in geometry
Trkovská, Dana ; Kubát, Václav (advisor)
This diploma dissertation is dedicated to applications of geometrical mappings. It is intended as a tuitional material specially for students of the third year of the mathematics teachers programm at Mathematical and Physical faculty of Charles University in Prague. The text can be used as a supplementary material for a seminar at secondary school as well. It is based on lectures of the course Geometry II. Students are familiar with the term mapping already during the lessons at elementary and secondary schools. Therefore in the diploma dissertation we at first give only a summary of basic knowledge about mappings in geometry, in the language of mathematics textbooks. Next part of this thesis includes theoretical knowledge about mappings in geometry in the form of definitions and propositions together with their proofs. A great part is dedicated to characterization of affine mappings, specially isometries and similarities. At the end circular inversion is explained as an example of a mapping that is not affine. For better imagination the whole text is complemented with a number of figures. Theoretical part is followed by a collection of exercises. Of course, solutions of all exercises are given.
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Web application for teaching of stereometry
Kadlecová, Ludmila ; Kubát, Václav (referee) ; Robová, Jarmila (advisor)
Nazev prace: Webova aplikacc pro vytiku stereometric Autor: Ludmila Kadlecova Katedra: Katedra didaktiky matematiky" Vedouci bakalafskc pracc: RNDr. Jarmila Robova, CSc. E-mail vedoucfho: robova@karliii.nilT.cuni.cz Absirakt: Tato pracc vzniklajako webova aplikace pro vyuku sicreometrie. Je urcena pfedcvsfm studentum a ucilelum stfednich skol. Webova aplikace vznikala ve dvou verzich. Verze podporujfci Cabri aplety a verze bez podpory Cabri apletu. Stranky maji dvc /akladnf casti a to cast vykladovou cast a cast s pffklady. Ncjdulczitcjsi kapiloly pracc jsou Rezy mnohostenu a Prunik pnmky a mnohostenu. Prace se zabyva polohovymi ulohami. Klicova slova: webova aplikace, sicreometrie, Cabri, vzajemne polohy Title: Web application for teaching of stereometry Author: Ludmila Kadlccova Department: Department of Didactics of Mathematics Supervisor: RNDr. Jarmila Robova, CSc. Supervisor's e-mail address: : Abstract: This thesis was created as a web application for streometry teaching. It is adresscd mostly to students and teachers of grammar schools. Web applications originated in two versions. A version that props Cabri applets and a version that doesn't. Websites are divided into two basic parts, the interpretation part and the part with examples. The most important passages are...
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Software supporting mathematics education
Machová, Dana ; Kubát, Václav (referee) ; Kašpar, Jan (advisor)
This thesis focuses on the use of TI InterActive! CAS system in secondary school mathematics teaching. Results of the survey "Programs supporting mathematics education", presented in the preface of the work indicate that CAS systems are far from widespread in our secondary schools. Possible reasons of this situation are considered. Overview of existing computer algebra systems is given with their common characteristics and a comparison of programs most often used in our schools (Derive, Maple, and Mathematica). The part dedicated to TI InterActive! itself starts with a list of its features and properties. Following are brief operating instructions for TI InterActive!. Advantages and disadvantages of this program are detailed here, both in comparison with other CAS systems and with regard to mathematics teaching at our secondary schools. Possible ways to use TI InterActive! are listed, along with fields it is most fit to. These conclusions are illustrated with samples created with TI InterActive!, most extensive of them being materials for teaching functions and differential calculus.
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Mappings in geometry
Trkovská, Dana ; Boček, Leo (referee) ; Kubát, Václav (advisor)
This diploma dissertation is dedicated to applications of geometrical mappings. It is intended as a tuitional material specially for students of the third year of the mathematics teachers programm at Mathematical and Physical faculty of Charles University in Prague. The text can be used as a supplementary material for a seminar at secondary school as well. It is based on lectures of the course Geometry II. Students are familiar with the term mapping already during the lessons at elementary and secondary schools. Therefore in the diploma dissertation we at first give only a summary of basic knowledge about mappings in geometry, in the language of mathematics textbooks. Next part of this thesis includes theoretical knowledge about mappings in geometry in the form of definitions and propositions together with their proofs. A great part is dedicated to characterization of affine mappings, specially isometries and similarities. At the end circular inversion is explained as an example of a mapping that is not affine. For better imagination the whole text is complemented with a number of figures. Theoretical part is followed by a collection of exercises. Of course, solutions of all exercises are given.
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