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Vliv stromů v městském prostředí na kvalitu ovzduší a teplotu okolí
Bajarová, Marta
Urban areas are beside other factors specific by its climate. The character of surfaces, which are in cities, contribute to formation of so called "urban heat island" -- especially in summer months cities are warmer than surrounding areas. Long lasting high temperatures have negative impact on human health. That is why the aim of this work was to find out what effects trees can have on the temperature of urban air and consequently on human health. The temperature was measured at four different locations: in the open area in a forest, in a small park, in a small alley and at a parking lot. The measurements have shown that the trees reduce air temperature and by that they contribute to the thermal comfort of the population. The positive impacts, which trees can bring to human health is the ability to reduce amount of solar radiation, to reduce air pollution and noise level. Trees also produce so called "biotically active substances". On the other hand, negative influence of the trees which should be considered, is pollen production, which may cause allergies for pollen sensitive individuals. In general, for human health the presence of trees in the urban areas is mostly positive.
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Informační zdroje v ARBORISTICE
Vašíčková, Lucie
This Bachelor thesis disserts on information sources in arboriculture. It features information necessity of interested parties, being focused on availability, information efficiency and conditions for data acquisition of problems in arboriculture. Information sources are arranged in order of processing stage. Following parts of this thesis deal with sorting out gained information by the help of suggested system considering needs of individual subjects, a momentary analysis and a recommendation for their further progress. While I was creating this thesis, I always kept asking over ultimate questions: Where, What and What For? The cardinal determination is to ease information orientation in arboriculture.
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The effect of stress on basic urban environment ecophysiological characteristics on tree
TONCAROVÁ, Gabriela
The subject of this bachelor thesis is the effect of stress on Platanus acerifolia which grows in different areas of the city. The first location is in the centrum of the city (Lannova třída) and the second location is in the city´s park in České Budějovice (Stromovka). There was a search of quantity of photosynthetic pigments and maximum of photochemical efficiency PS (photosystem) II. This search was conducted by a metod of measuring chlorophyll fluorescence and spectrophotometry. Samples of leaves from Platanus acerifolia were taken during growing season May to September. There were three trees chosen from each location and there were five leaves from each tree examined by metod of measuring chlorophyll fluorescence. The leaves were examined approximately at the same height and the examination was done at noon time. There were 150 leaves examined in total. There were four leaves of each tree used for a method of spectrophotometry. Those leaves were immediately taken to laboratory where the examination took place. There were 120 leaves used for this metod in total. The search showed that the more stressful environment Platanus acerifolia has a smaller content of photosynthetic pigments and photochemical efficiency of PS II decreases. Furthermore, the study showed that Platanus acerifolia belongs among relatively resistant trees. Values maximum photochemical efficiency of PS II and chlorophyll measured at both sites is almost statistically different. The statistical difference between the two sites were usually recorded at the beginning and end of the growing season.
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Comparison of seasonal changes of ecophysiological characteristic of two selected trees under stress of the urban environment
ŠINDELÁŘOVÁ, Lenka
This thesis deals with the study of impact of stress to the two types of broadleaved trees in urban environment during the growing season. The studied species were Small-leaved Lime (Tilia cordata) and London Planetree (Platanus acerifolia). Trees are the important part of the urban environment both from an aesthetic standpoint and from the standpoint of the reduction of negative effects of the urban environment. However, these trees are under the constant influence of stress factors with which they have to deal (air pollution, water, temperature). Some trees deal with stress better but some worse. Because of this fact, two different types of trees were selected, which are able to deal with stress by their own way. As indicators of physiological state of plants under stress, the content of photosynthetic pigments and photochemical efficiency of PS II (QY and QY') were monitored at individual trees. The measurements were carried out always two days consecutively from May to September 2013 in Jiráskovo nábřeží in České Budějovice. Every month, the spectrophotometric measurement to determine the pigments in a leaf was carried out. For the spectrophotometric measurements, twenty-four leaves were measured in total; for the fluorescent measurement, thirty leaves were measured in total. The obtained values of both methods were processed and evaluated by graphs, which together with the average values show the statistic demonstrability of difference between the measured trees in city. According to these measured values, Small-leaved Lime seemed to be more vital at a given location, although London Planetree is marked in the literature as more resistant one towards the urban stress.
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Time of landscape
KOPÁČKOVÁ, Alena
This diploma work is virtually focused on the landscape-painting. The presented painting cycle reflects the temporal variations of landscape. It provides a transcription of emotional experiences and feelings arising from an intimate communication with a certain landscape spot. The changes in time are demonstrated via a repeating motif, which enables to follow the colour variability of the nature and the surrounding atmosphere. Photos attached to the work display the landscape variations in the durations of two years. The regular observations of two tree motives result in a cycle of nine paintings, which can be further divided into three series. The theoretical part of the diploma work clarifies its principal idea. It explains motivations, inspiration resources and circumstances leading to the completing the painting cycle. The attention is also paid to the landscape-painting as a genre art and selected artists, those creations were inspired by the close touch of the nature.
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The use of logistic regression in the market research
Brabcová, Hana ; Pecáková, Iva (advisor) ; Ranocha, Pavel (referee)
The aim of this work is to decide the real usage of logistic regression in the market research tasks respecting the needs of final users of research results. The main argument for the final decision is the comparison of its output to the output of an alternative classification method used in practice -- a classification tree method. The topic is divided into three parts. The first part describes the theoretical framework and approaches linked to logistic regression (chapter 2 and 3). The second part analyses the experience with the usage of logistic regression in Czech market research companies (chapter 4) and the topic is closed by applying the method on real data and comparing the output to the classification tree output (chapter 5 and 6).
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People leadership in non-government organizations
Škorvaga, Norbert ; Lukeš, Martin (advisor) ; Seidlová, Eva (referee)
Táto diplomová práca sa zameriava na oblasť práce s ľuďmi v neziskových organizáciách. Obsahuje hlbší prieskum o vedení ľudí v NNO Strom života. Po vymedzení skúmanej oblasti vedenia ľudí na základe preštudovanej teoretickej literatúry, ako aj jednoduchej praktickej úvahy, sa zameriava na špecifiká neziskových organizácií a následne i špecifiká práce s ľuďmi v neziskovom sektore. V analytickej časti obsahuje dotazníkové šetrenie, ktorého cieľom bol prieskum stavu vedenia ľudí v NNO Strom života; a na základe ktorého boli navrhnuté niektoré doporučenia pre zlepšenia v tejto oblasti.
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