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Mykobiota šťovíku krmného / Mycobiota of energy sorrelJanďourková, Hana January 2013 (has links)
Energy sorrel (Rumex patientia L. x Rumex tianschanicus A. Los.) is a plant with a high yield of above-ground biomass. Because of this, it is grown as energy crop, but in Ukraine it is also important forage crop. Mycobiota has not been examined, even though energy sorrel is grown in the Czech Republic experimentally since 1992 (in agricultural operations since 2001). The aims of this thesis were: to determine the composition of mycobiota of healthy plants and of mycobiota associated with leaf and stem spots, to verify whether fungi isolated from spots can cause these spots and if previously isolated fungus Phomopsis sp. can cause spots. Fungi were cultivated on 2% malt extract agar and then morphologically determined. From representative strains were isolated DNA and sequences of the ITS region were compared with the GenBank databases, this verified the morphological determination and the sterile species were determined. In total 24 morphotypes of endophytic fungi were cultivated from healthy plants. The most common species were: Clonostachys rosea f. rosea, Cladosporium cladosporioides, Rhizopus arrhizus var. arrhizus, Alternaria alternata and Acremonium strictum. From the spots were isolated in total 29 morphotypes, the dominant species were: A. strictum, Aureobasidium pullulans, C....
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Hot spot analýza krádeží automobilů v Liberci / Hot spot analysis of car thefts in LiberecKostka, Jiří January 2016 (has links)
My diploma thesis deals with distribution analysis of car thefts in the town of Liberec and will look at the options of situational crime prevention techniques. In my diploma thesis I have used the concept of hot spots which is able to show higher than average concentrations of car thefts in the study area. The database is relatively unique, provided by the regional police department in Liberec and contains the records of more than a thousand reported car thefts in Liberec between the years 2011-2014. The provided data contains GPS coordinates and thanks to them, it was possible, with relatively high accuracy, to identify hot spots of car thefts in Liberec. The identification of hot spots was possible as spatial statistics were used that enabled concrete calculations of kernel density, which made it possible to identify problem locations. In our chosen hot spots we then undertook our fieldwork, whose main goal was to evaluate the options of utilization strategy CPTED, so as to obtain preventive measures in problem locations. The output of this thesis include hot spot maps of car thefts 2011-2014 and also recommendations for preventive measures, which would be advisable to implement in chosen hot spots. Key words: car thefts, crime mapping, CPTED, hot spot, crime prevention, GIS
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Heat Generation Mechanisms in Energetic Composite Materials Under Ultrasonic ExcitationZane A Roberts (6998114) 15 August 2019 (has links)
<p>Thermal dissipation of mechanical energy
from periodic loading in energetic materials (EMs) leads to the creation of areas
of intense, localized heating, called hot spots. The impact and shock conditions
for the hot spot initiation of solid explosives have been extensively explored,
but little work has focused on high-frequency contact loading. In order to
design formulations to address unintentional initiation by mitigating heating
in polymer-bonded explosives (PBXs) and other heterogeneous EMs, the mechanisms
of heat generation which lead to the thermal initiation of energetic composites
under ultrasonic excitation were explored. Heat generation mechanisms which may
lead to unintentional initiation were identified through the diagnostic
techniques of second harmonic generation (SHG) of δ-HMX (1,3,5,7-tetranitro-1,3,5,7-tetrazocine)
crystals; X-ray phase contrast imaging (PCI) performed at the Argonne National
Laboratory Advanced Photon Source; infrared (IR) thermography; and optical
microscopy. This work concludes with high-speed mesoscale observations of dense
layers of PETN (pentaerythritol tetraniterate), CL-20
(hexanitrohexaazaisowurtzitane), RDX (1,3,5-trinitro-1,3,5-triazine), and HMX which
were damaged or driven to decomposition under acoustic insult using the non-intrusive
imaging technique of shadowgraphy to detect hot spots within the transparent
binder. Recommendations are formed which address binder adhesion, energetic
material properties, and particle morphology on the vibration sensitivity of a
PBX formulation. </p>
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Property Crime in The City and County of San Francisco 2016 - 2017 : Applying GIS to Crime Pattern TheoryEdholm, Emma January 2019 (has links)
This study’s aim is to reveal statistically significant hot spots and temporal patterns of property crime in the City and County of San Francisco and to also analyse the relationship between property crimes and the environment in which these crimes occur by using Geographic Information System (GIS). Crime pattern theory was used as the framework for the analysis of environmental surroundings and occurrence of crime. This theory indicates that certain places can be crime generators and attractors. The result showed that there are hot spots of crime in the north-eastern part of San Francisco, and that crime in these high-risk areas are intensifying. Then, by visual examination of density maps of property crime and facilities, such as shopping centres, pubs/bars/nightclubs and Bay Area Rapid Transit stations, it is shown that these facilities can explain concentrations of crime in certain areas. Furthermore, this study shows GIS can be a practical tool to utilize when presenting data of crime when used in combination with social theories which focuses on the causes of crime occurrence.
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Cílení reklamy v televizním vysílání / Targeting advertising on TVMichelfeit, Radek January 2011 (has links)
The thesis is firstly focused on television broadcasting. The author briefly describes the development of television broadcasting and the market specifics of TV stations. Then he describes the operation as well as financing issues of TV stations. The commercial broadcasters are dependent on revenues from advertising, so this issue is appropriately emphasized in the thesis. Then the thesis deals with targeted advertising on television from the perspective of advertisers. It describes their approach to targeted marketing, the criteria for selecting appropriate media for advertising message, suitable television channel, programme and type of advertising message. Describes the electronic audience measurement which helps to position the TV ads properly. Author also proposes the use of viewer satisfaction surveys for more effective positioning of TV ads. The last part is devoted to research of targeted advertising on TV Barrandov and observes if it is possible to place the TV spots properly according to the selected target group.
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Remediation of Soil Hydrophobicity on a Coastal USGA Sand-Based Golf GreenThompson, Troy David 01 June 2010 (has links)
Managing soil hydrophobicity caused by localized dry spots (LDS) on sand based golf greens has become one of the greatest challenges for golf course superintendents and managers, especially as water restrictions intensify. The purpose of this study was to evaluate the effectiveness of thirteen soil surfactants in eliminating LDS and in maximizing root zone soil moisture on a sand based USGA golf green located on the California Central Coast. Potential water repellency of air dried cores (measured utilizing the water droplet penetration time (WDPT) method), phytotoxicity, and climate were analyzed during two experimental trials. Phytotoxicity data was collected for Trial I using visual quality ratings and for Trial II using a chlorophyll meter. Phytotoxicity decreased during Trial I. Differences in phytotoxicity as measured using chlorophyll index were not at all significant during Trial II (p = 1). Ten of the thirteen wetting agent treatments significantly (p < 0.001) decreased soil hydrophobicity compared with the other wetting agent treated plots and the non-treated control. More frequent application of Cascade Plus resulted in a more significant reduction in soil hydrophobicity. Increasing the application rates also resulted in the reduction of soil hydrophobicity. Wetting agent treatment 6-CP(10day) maintained the highest volumetric water content (VWC) but treatment 13-2079337 maintained the highest levels for wetting agents treated monthly.
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“We may see something but if we fail to notice, we are essentially blind..” : A study of what methods companies use when analysing the surrounding worldAndersson, Lisa, Sörensen, Hanna January 2007 (has links)
<p>ABSTRACT</p><p>The conditions on the market are rapidly changing and businesses in Sweden need to seize signals of change in time, in order to have a strong market position. The ability to make the right decisions and react in time is vital due to the increasing competition and a mistake can have devastating consequences for a company. The aim of this thesis is to investigate what tools and methods businesses use to analyse the surrounding world, which has lead to following research question:</p><p>How do businesses analyse the surrounding and predict trends and what factors in the society should a company be attentive to while performing an analysis?</p><p>Analyses of the surrounding heritage from a term called Business Intelligence, which consist of internal and external factors. This thesis focuses of analyses of external factors, in other words the surrounding. These external aspects enrich the understanding of the internal factors and together they are the foundation that strategic planning originates from. An analysis can be performed in many different ways for instance with collaborations with consultants or by observing the society. A World Mapping method can be used to chart trends or important changes and a company can also try to identify unpredicted events by using the factor X-model. Theories by Bengt Wahlström have also been used in the study to display how trends can be analysed.</p><p>This study will analyse large food producers who have established brands on the Swedish market. A qualitative approach has been conducted where six food supplier companies and three consultant companies specialised in analysing the surrounding have been interviewed. The method has been deductive where the empirical findings has been analysed with the theoretical framework. The outcome of the research shows that collaborations with consultants is a commonly used instrument and practical methods such as scenario planning and in real life scanning are preferred as visualising factors simplifies the managing of them. Media plays a significant role, both as a tool to search and track trends but also as a tool that can increase the affect of trends and unforeseen occurrences.</p>
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EI Eridani and the art of doppler imaging : a long-term study / EI Eridani and the art of doppler imaging : a long-term studyWashüttl, Albert January 2004 (has links)
Das Verständnis magnetisch verursachter Aktivität auf Sternen sowie der zugrundeliegenden Dynamoprozesse ist von fundamentaler Bedeutung für das Verständnis von Entstehung und Entwicklung von Sternen sowie des Lebens im Universum. Sichtbare Erscheinungen dieser stellaren Aktivität sind u.a. Sternflecken, welche als Indikatoren des zugrundeliegenden Magnetfeldes dienen. Solche Flecken können auf anderen Sternen als der Sonne nicht direkt beobachtet werden, zumal mit den heutigen technischen Mitteln eine Auflösung der Oberfläche selbst der benachbarten Sterne unmöglich ist. Eine indirekte Rekonstruktionsmethode namens 'Doppler Imaging' erlaubt es jedoch, auf die Temperaturverteilung auf der Sternoberfläche zu schließen.
Für diese Arbeit wurden elf Jahre kontinuierlicher spektroskopischer Beobachtungen des aktiven Doppelsterns EI Eridani herangezogen, um insgesamt 34 Dopplerkarten zu erstellen. In der Folge wird versucht, eine Grundlage zu schaffen für die Analyse des zweidimensionalen Informationsgehalts dieser Karten. Drei Oberflächenkartenparameter werden vorgeschlagen: gemittelte Temperatur, getrennt für verschiedenen stellare Breitenbänder; relative Fleckenhäufigkeit; und, zum Zwecke der Auswertung der strukturellen Temperaturverteilung, Längen- und Breiten-Ortsfunktion der Sternfleckenhäufung. Die resultierenden Werte zeigen deutlich, daß kein zeitlicher Zusammenhang mit dem photometrischen Aktivitätszyklus besteht. Die Morphologie der Fleckenverteilung bleibt während des kompletten Beobachtungszeitraums im wesentlichen konstant. Im Gegensatz zur Sonne gibt es also, im beobachteten Zeitraum und innerhalb der bestehenden Genauigkeit, keinen Fleckenzyklus auf dem aktiven Stern EI Eri.
Darüberhinaus wurde eine ausführliche Studie der stellaren Parameter von EI Eri und eine vorläufige Abschätzung der differentiellen Rotation auf EI Eri durchgeführt, die eine anti-solare Ausrichtung aufzuweisen scheint, d.h. der Pol rotiert schneller als der Äquator. / Understanding stars, their magnetic activity phenomena and the underlying dynamo action is the foundation for understanding 'life, the universe and everything' - as stellar magnetic fields play a fundamental role for star and planet formation and for the terrestrial atmosphere and climate. Starspots are the fingerprints of magnetic field lines and thereby the most important sign of activity in a star's photosphere. However, they cannot be observed directly, as it is not (yet) possible to spacially resolve the surfaces of even the nearest neighbouring stars. Therefore, an indirect approach called 'Doppler imaging' is applied, which allows to reconstruct the surface spot distribution on rapidly rotating, active stars.
In this work, data from 11 years of continuous spectroscopic observations of the active binary star EI Eridani are reduced and analysed. 34 Doppler maps are obtained and the problem of how to parameterise the information content of Doppler maps is discussed. Three approaches for parameter extraction are introduced and applied to all maps: average temperature, separated for several latitude bands; fractional spottedness; and, for the analysis of structural temperature distribution, longitudinal and latitudinal spot-occurrence functions. The resulting values do not show a distinct correlation with the proposed activity cycle as seen from photometric long-term observations, thereby suggesting that the photometric activity cycle is not accompanied by a spot cycle as seen on the Sun. The general morphology of the spot pattern on EI Eri remains persistent for the whole period of 11 years.
In addition, a detailed parameter study is performed. Improved orbital parameters suggest that EI Eri might be complemented by a third star in a wide orbit of about 19 years. Preliminary differential rotation measurements are carried out, indicating an anti-solar orientation.
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“We may see something but if we fail to notice, we are essentially blind..” : A study of what methods companies use when analysing the surrounding worldAndersson, Lisa, Sörensen, Hanna January 2007 (has links)
ABSTRACT The conditions on the market are rapidly changing and businesses in Sweden need to seize signals of change in time, in order to have a strong market position. The ability to make the right decisions and react in time is vital due to the increasing competition and a mistake can have devastating consequences for a company. The aim of this thesis is to investigate what tools and methods businesses use to analyse the surrounding world, which has lead to following research question: How do businesses analyse the surrounding and predict trends and what factors in the society should a company be attentive to while performing an analysis? Analyses of the surrounding heritage from a term called Business Intelligence, which consist of internal and external factors. This thesis focuses of analyses of external factors, in other words the surrounding. These external aspects enrich the understanding of the internal factors and together they are the foundation that strategic planning originates from. An analysis can be performed in many different ways for instance with collaborations with consultants or by observing the society. A World Mapping method can be used to chart trends or important changes and a company can also try to identify unpredicted events by using the factor X-model. Theories by Bengt Wahlström have also been used in the study to display how trends can be analysed. This study will analyse large food producers who have established brands on the Swedish market. A qualitative approach has been conducted where six food supplier companies and three consultant companies specialised in analysing the surrounding have been interviewed. The method has been deductive where the empirical findings has been analysed with the theoretical framework. The outcome of the research shows that collaborations with consultants is a commonly used instrument and practical methods such as scenario planning and in real life scanning are preferred as visualising factors simplifies the managing of them. Media plays a significant role, both as a tool to search and track trends but also as a tool that can increase the affect of trends and unforeseen occurrences.
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Exploring crime in Toronto, Ontario with applications for law enforcement planning: Geographic analysis of hot spots and risk factors for expressive and acquisitive crimesQuick, Matthew January 2013 (has links)
This thesis explores crime hot spots and identifies risk factors of expressive and acquisitive crimes in Toronto, Ontario at the census tract scale using official crime offence data from 2006. Four research objectives motivate this thesis: 1) to understand a number of local spatial cluster detection tests and how they can be applied to inform law enforcement planning and confirmatory research, 2) explore spatial regression techniques and applications in past spatial studies of crime, 3) to examine the influence of social disorganization and non-residential land use on expressive crime at the census tract scale, and 4) integrate social disorganization and routine activity theories to understand the small-area risk factors of acquisitive crimes. Research chapters are thematically linked by an intent to recognize crime as a spatial phenomenon, provide insight into the processes and risk factors associated with crime, and inform efficient and effective law enforcement planning.
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