An Assortment of Woody Plants Produced in the Manor of Nové Dvory at the Turn of the 18th and 19th Centuries: European, Asian and North African Taxa

Lists of woody plants produced in nurseries were preserved from the years 1794, 1800 and 1814 in the manor of Nové Dvory of the noble family of Chotek. 276 taxa of woody plants in the current concept, permanently cultivated outdoors, have been determined in these lists at least to the level of the species. According to the existing findings, for 241 of them were documented for the first time their production for the needs of the landscape architecture in the territory of the Czech Republic. In the case of foreign natural and all cultural taxa, it is also the oldest evidence of their presence in this territory; for native taxa it is the first evidence of their usage in garden culture. Approximately 21.5% of taxa are autochthonous in the Czech Republic, 24% have at least part of their native territory in Europe and 1.5% in the Middle East, 2% come from Central Asia and Siberia and 4% from East Asia. Taxa produced in culture account for approximately 13%. Woody plants of North American origin (they are given a separate contribution) are represented by 34%.O

An assortment of woody plants produced in the manor of Nové Dvory at the turn of the 18th and 19th centuries: North American taxa

The noble family of Chotek began with the realization of extensive landscaping in their manor of Nové Dvory at the end of the 18th century. Lists of woody plants produced for these purposes and for sale were preserved from the years 1794, 1800 and 1814. 276 taxa of foreign woody plants in the current concept, permanently cultivated outdoors, have been identified in all three lists at least to the level of the species. 91 taxa come from North America, with 81 being the first documented place of their presence in the territory of the Czech Republic. All North American taxa are natural, none of them originated in culture.O

Modification of semiconductor nanowire growth

Tato diplomová práce se zabývá růstem polovodičových nanovláken na substrátu Ge(111). Nanovlákna byla připravena metodou PVD (physical vapor deposition), jejich růst byl katalyzován Au koloidními nanočásticemi. V práci je popsán vliv změny depozičních podmínek na výslednou morfologii nanovláken. Je ukázáno, že preferenčním směrem růstu Ge nanovláken je směr . Byla pozorována i Ge vlákna orientace .This diploma thesis deals with the growth of semiconductor nanowires on Ge(111) surface. The nanowires were prepared by means of PVD (physical vapor deposition). The growth was calatyzed by Au colloidal nanoparticles. An impact of different growth conditions on nanowire morfology is presented. It is demonstrated that Ge nanowires grow preferentially along axis. Ge wires with orientation were observed as well.

Probing the micromechanical strength of oxide ceramic composite reinforcements

This work shows how one can probe the micromechanical strength of ceramic reinforcements used in metal matrix composites, which greatly influences the mechanical performance of the composite material yet has seldom been quantified with precision. More specifically, this study presents two methods by means of which one can measure the statistical strength distribution of microscopic, low-aspect-ratio, ceramic particles. Additionally, the study reveals the nature of specific defects that weaken such ceramic reinforcements and shows that, when those defects are absent, one can produce particles of near-theoretical strength, which have the potential to produce remarkably strong and tough metal matrix composites. In one developed method called here the Meridian Crack Test, individual spherical particles are compressed uniaxially between a pair of parallel elasto-plastic platens. It is shown that, by tailoring the platen hardness one can control the relative area of particle-to-platen contact during the test, thereby eliminating the initiation of contact microcracks that are often found to influence particle fracture when hard platens are used. It is shown how this method, coupled with the mathematics of statistical survival-analysis, can give unambiguous access to the particle statistical tensile strength as governed by surface flaws. The method is first demonstrated using microscopic fused quartz spheres 40±20µm in diameter and is then used to measure the strength controlled by surface and subsurface flaws in plasma-sprayed spherical amorphous and nanocrystalline near-eutectic "Eucor" alumina-zirconia-silica ceramic particles of diameter near 30 µm. Results show that nanocrystalline Eucor particles exhibit a characteristic Weibull strength of 1490 MPa, which is approximately 30% higher than in corresponding amorphous particles. The second developed method, called here the C-shaped sample test, combines focused ion beam milling, loading using a nanoindentation device, and bespoke finite element simulations to measure the local strength of ceramic reinforcements free of artifacts commonly present in micromachined specimens. The method is first demonstrated on Nextel 610TM nanocrystalline alumina fibres embedded in aluminium. Results reveal a size effect that does not follow, across size scales, the Weibull statistical strength distribution that is measured by tensile testing macroscopic samples of the fibres. This indicates that, in micromechanical analysis of multiphase materials, highly localized events such as the propagation of internal damage require input data that are measured at the same, local, micro- scale as the event. Finally, we implement the C-shaped sample test method with additional micro-cantilever beam testing to measure the local strength of vapour-grown ¿-alumina Sumicorundum® particles 15 to 30 µm in diameter, known to be attractive reinforcing particles for aluminium. Results show that, provided the particle surface is free of readily observable defects such as pores, twins or grain boundary grooves, the particles can achieve local strength values that approach those of high-perfection single-crystal alumina whiskers, on the order of 10 GPa. It is also shown that by far the most harmful defects are grain boundaries, leading to the general conclusion that alumina particles must be single-crystalline or alternatively nanocrystalline to fully develop their potential as a strong reinforcing phase in composite materials

Digital Strategy Analysis of Geox S.p.A on German Market and Recommendations Regarding its Improvement

Pochopení digitální transformace společností v segmentu Business-to-Customer, to je hlavní smysl teoretické části této práce. Konkrétně, jak je touto transformací ovlivněno vytváření business modelu a digitální strategie společností v retailovém odvětví. Avšak hlavním účelem práce je ukázat tuto transformaci na příkladu obuvní a oděvnické společnosti Geox S.p.A, konkrétně její dceřiné společnosti Geox Deutschland Gbmh (dále jen Geox). Největší důraz je kladen na dvě oblasti digitální transformace. Prvně, jak mohou být využity on-line kanály a technologie obecně spojené s digitalizací ke zvýšení příjmů. Druhou oblastí je zkoumání příležitosti v oblasti sběru dat pomocí digitákních technologii a využití těchto dat s cílem zvýšit úroveň nákupních zkušenosti zákazníků této společnosti. Vyhodnocení úrovně digitalizace německého trhu je založeno na analýze kvalitativních dat, schromážděných ze sekundárních zdrojů. Tato metoda se ukázala být jako velmi efektivní v poskytnutí detailního pohledu do této oblasti. V rámci investigace vlastní digitálni strategie společnosti Geox byly opět většinou použity sekundární data; jen v několika oblastech kde to bylo realistické byly vyhodnoceny primární data. Výsledky analýz odhalily že společnost Geox dala do své digitální transformace poměrně mnoho usílí, primárně v oblastech sjednocování online a offline kanálů, marketingu na sociálních sítí, vývoji content managementu a růstu povědomí o značce Geox díky několika interaktivním kampaním. Nicméně, analýza odhalila i nadmíru slabin v digitální strategii společnosti Geox. Konkrétně nedostačující mobilní strategie, chybějící digitální technologie v kamenných obchodech, nevyhovující spolupráce mezi vedením Geox a lokálními prodejci v tvorbě marketingových kampaní, chabě personalizované webové stránky a nefungující zasílání nabídek na míru konkrétním zákazníkům. Obecně tedy může být konstatováno, že navzdory věnovanému úsilí do digitální transformace se společnosti Geox v některých oblastech nedaří přizpůsobit moderním trendům. Pročež je v závěrečné části práce identifikováno několik doporučení pro společnost Geox, za účelem eliminace slabin zmíněných výše a udržení konkurenceschopnosti do budoucna.First of all, the theoretical part of thesis should assist reader to understand the digital transformation of companies, how it affects Business-to-Customer segment, especially building the business models and digital strategies of companies in retail industry. Main purpose of this report, however, is to show this digital transformation on live example of footwear and apparel retailer Geox S.p.A, specifically its German subsidiary Geox Deutschland Gmbh (hereinafter Geox). Two main areas of digital transformation are being investigated. Firstly, possibilities of leveraging a digital channels and assets in order to revenue increase. Secondly, opportunities of technology utilization in order to leverage the data from all channels and enhance the customer experience. The evaluation of German market digitalization level is based on secondary analysis of qualitative data, which has proved to be effective way in providing useful insight for chosen topic. The evaluation of Geox’s digital strategy itself is based on analysis of both, primary and secondary data. The results of analyses revealed that Geox put significant effort into its digital transformation; especially in the area of integration online and offline channels, social media marketing, rich content management or growing of brand awareness due to interactive marketing campaigns. However, this report recognizes plenty weaknesses of Geox digital strategy as well. Specifically, missing solid mobile strategy, wanting digital technology in store, substandard cooperation between headquarter and franchisees in marketing campaigns, poorly personalized websites and inadequate tailored offers to customers. Basically, in spite of effort which has been put into its digital transformation, Geox is not truly following contemporary trends. Wherefore, several steps identified in recommendations should be followed by Geox in order to remain competitive in the future.

Germanium island morphology in the presence of Gallium and Gold

Tato práce se zabývá morfologií ostrůvků germania v přítomnosti zlata, stříbra a gallia, připravených na povrchu Ge(111) pomocí napařování za podmínek UHV. V práci je představena rešerše povrchových rekonstrukcí uvedených kovů na povrchu Ge(111). Je ukázáno, že koncentrace, velikost i tvar ostrůvků závisí na přítomnosti jednotlivých kovů i teplotě depozice. Povrchová struktura a morfologie vzorků byly studovány metodami RHEED a SEM.This bachelor's thesis deals with germanium island morphology in the presence of gold, silver and gallium. The islands were grown on Ge(111) surface by means of evaporation under the UHV conditions. In the paper a background research on the surface reconstructions of the metals on Ge(111) is presented. It is demonstrated that the island concentration, size and shape are affected by the presence of metals and the deposition temperature. The surface structure and the morphology of the samples were investigated by RHEED and SEM.