GPU Image Processing Library

Tato práce se zabývá architekturou grafických karet Nvidia a s ní související programátorské rozhranní CUDA, které je využito při tvorbě knihovny akcelerující algoritmy zpracování obrazu. Velký důraz je kladen na testování výkonnostního zisku oproti optimalizované a používané knihovně OpenCV.This work is concerned with architecture of recent Nvidia graphics cards and application programming interface CUDA. That is used to create accelerated image processing library. It place emphasis on testing performance gain compassion with high optimized and used OpenCv library.

Moving Object Detection in Video Using CUDA

Tato práce se věnuje sledování objektů ve videa z monokulární kamery za pomocí modelu sledovaného tělesa. Stav 3D objektu je určený pomocí minimalizace účelové funkce užitím částicového filtru. Účelová funkce je založena na podobnosti renderované scény a skutečného videa.This thesis deals with model-based approach to 3D tracking from monocular video. The 3D model pose dynamically estimated through minimization of objective function by particle filter. Objective function is based on rendered scene to real video similarity.

Comparison of financial indicators for different types of companies

Předložená práce je zaměřena na komparaci finančních ukazatelů v různých odvětvích ČR. Práce se dělí na teoretickou a praktickou část. První část vyjadřuje úvod do finanční analýzy a popisuje, komu jsou určena data z výsledků finanční analýzy. Dále je popis ukazatelů finanční analýzy, jejich dělení do skupin podle dílčího hodnocení odvětví a následně jsou ukázány soustavy ukazatelů, které pomáhají hodnotit z širšího měřítka. Druhá část ukazuje praktickou stránku věci. Zaměřuje se na aplikaci finančních ukazatelů a jejich soustav ve vybraných odvětvích průmyslu, zemědělství a stavebnictví. Na začátku je popis hodnocených odvětví. Dále je u nich provedena analýza ve třech letech 2010, 2011 a 2012. Odvětví jsou pomocí ukazatelů srovnávána mezi sebou, jejich vývoj v čase, tak i stav ve sledovaných letech V závěru jsou odvětví z pohledu finanční analýzy celkově zhodnocena.ObhájenoThe submitted bachelor thesis is focused on the Comparison of financial indicators in different sectors of economy Czech Republic. The thesis contains theoretical and analytical part. The first part expresses introduction to financial analysis, users and sources of financial analysis. Theoretical part also includes financial indicators and systems of indicators. Indicators are divided into groups by using. The second part shows the practical side of thesis. It focuses on the application of financial indicators and indicators systems in selected sectors industries, agriculture and building. Indicators are calculated from 2010 to 2012. Sectors are compared with each other, sectors are evaluated over time, sectors are evaluated the states in the followed years. At the end, sectors are in terms of financial analysis overall evaluation

Online simulácia futbalovej ligy, umelá inteligencia manažérov futbalových tímov so schopnosťou učenia

V predloženej práci je popísaná tvorba jednoduchej hry typu futbalového manažéra. Herné dianie je simulované programom po dnoch. Ovládanie je prístupné online pomocou webového prehliadaca. Simulacný program sútažné zápasy simuluje diskrétne a výstupom simulácie je textový komentár zo zápasov, ako aj jednoduché dvojrozmerné zobrazenie priebehu zápasu. Manažéri výsledok zápasov ovplyvnujú volbou taktiky a výberom hrácov na jednotlivé zápasy. V projekte je naimplementovaná umelá inteligencia pre manažérov, ktorí sú ovládaní pocítacom. Na jej implementáciu boli použité dve metódy. Prvou je jednoduchá horolezecké metóda, druhou metódou sú genetické algoritmy. Obe metódy pocas simulácie dokážu svoju volbu taktiky zlepšovat. V závere práce sú výsledky získané jednotlivými metódami navzájom porovnané.In the presented work is described a creation of simple football manager computer game. Game events are simulated by days. Control is accessible via the web browser. Simulating program simulates the matches by means of discrete simulation, the output of the simulation are text commentaries from the matches as well as simple two-dimensional display of the match progress. Managers influence the results of the matches by choosing tactics and selecting players for the matches. There is an artificial intelligence implemented for the managers, that are controlled by the computer program. For its implementation were used two different methods - simple hill climbing and genetic algorithms. Both methods are able to improve their performance during the simulation. In the conclusion of the work, results obtained by the methods are compared.Ústav formální a aplikované lingvistikyInstitute of Formal and Applied LinguisticsFaculty of Mathematics and PhysicsMatematicko-fyzikální fakult

Degradace biokompozitů v mořském biotopu

Tato bakalářská práce se zabývá studiem vlivu působení mořského biotopu na mechanické vlastnosti a povrch biopolymeru PLA a biokompozitu PLA s přidaným částicovým plnivem, kávovou sedlinou. Práce je rozdělena na teoretickou a experimentální část. V teoretické části jsou popsány kompozity, jejich plniva a matrice se zaměřením na částicová plniva a polymerní matrici. V teoretické části je dále popsána kyselina polymléčná včetně výroby, vlastností a využití. Experimentální část začíná specifikací materiálových složek, pokračuje popisem výroby biokompozitu a zkušebních těles a popsáním postupu hodnocení mechanických vlastností a struktury. Výsledky jsou vyhodnoceny v závislosti na době expirace v mořském biotopu. V závěrečné části práce je provedena diskuse výsledků a doporučení pro další směřování v této oblasti.This bachelor thesis deals with the study of the influence of the sea biotope on the mechanical properties and surface of the PLA biopolymer and the PLA biocomposite with added particulate filler, coffee grounds. The tesis is devided into theoretical and experimental parts. The theoretical part describes composites, their fillers and matrices focusing on particle fillers and polymer matrix. The theoretical part further describes polylactic acid including production, properties and applications. The experimental part begins with a specification of material components, continues with a describtion of the production of biocomposite and test specimens and with a description of the procedure for evaluating mechanical properties and structure. The results are evaluated depending on the expiration time in the sea biotope. In the final part of the thesis, is the discussion of the results and recommandations for further researches in this area

Návrh konstrukčního řešení vaku pro zvířata

Diplomová práce se zabývá návrhem konstrukčního řešení vaku pro zemřelá zvířata. Práce je rozdělena do dvou částí, teoretické a experimentální. Teoretická část je zaměřena na rešerši současných typů veterinárních vaků na trhu, která shrnuje základní poznatky, konstrukční a materiálová řešení. Dále jsou v teoretické části popsány možnosti výroby (spojování) veterinárních vaků, druhy materiálů pro jejich výrobu, možnosti uzavírání vaku a prvky usnadňující manipulaci s vakem. V experimentální části jsou popsána dílčí konstrukční řešení, jako typ zapínání, geometrie zapínání a prvky pro usnadnění manipulace, jejichž kombinací jsou vytvořeny konstrukční návrhy vaků. Experimentální část dále obsahuje detailní popis jednotlivých konstrukčních návrhů včetně doporučení pro technologii výroby, materiálu a rozměrů.The diploma thesis deals with the design of a constructional solution of a bag for dead animals. The thesis is divided into two parts, theoretical and experimental. The theoretical part is focused on a research of current types of veterinary bags on the market, which summarizes the basic facts, design and material solutions. Furthermore, the theoretical part describes the possibilities of production (joining) of veterinary bags, types of materials for their production, possibilities of bag closure and elements facilitating bag handling. The experimental part describes partial design solutions, such as the type of fastening, the geometry of the fastening and the elements to facilitate handling, which are combined to create the bag designs. The experimental section also contains a detailed description of each design including recommendations for manufacturing technology, material and dimensions

The importance of Arctic driftwood for interdisciplinary global change research (Short Communication / Methodological note)

The Arctic is one of the regions most sensitive to global warming, for which climate and environmental proxy archives are largely insufficient. Arctic driftwood provides a unique resource for research into the circumpolar entanglements of terrestrial, coastal and marine factors and processes – past, present, future. Here, first dendrochronological and wood anatomical insights into 639 Arctic driftwood samples are presented. Samples were collected across northern Norway (n =430) and north-western Iceland (n =209) in 2022. The overall potentials and limitations of Arctic driftwood to improve tree-ring chronologies from the boreal forest, and to reconstruct changes in sea ice extent and ocean current dynamics are discussed. Finally, the role driftwood has possibly played for Arctic settlements in the past hundreds of years is examined

Exploring Growth Variability and Crown Vitality of Sessile Oak (Quercus Petraea) in the Czech Republic

Unraveling climatic effects on growth of oak - Europe’s most ecologically and economically important forest species - has been the subject of many recent studies; however, more insight based on field data is necessary to better understand the relationship between climate and tree growth and to adapt forest management strategies to future climate change. In this report, we explore the influence of temperature, precipitation and drought variability on the productivity and vitality of oak stands in the Czech Highlands. We collected 180 cores from mature oaks (Quercus petraea) at four forest stands in the Czech Drahany Highlands. Standard dendromethods were used for sample preparation, ring width measurements, cross-dating, chronology development, and the assessment of growth-climate response patterns. Crown vitality was also evaluated, using the modified ICP Forests methodology. Late spring precipitation totals between May and June as well as the mean July temperature for the year of ring formation were found to be the most important factors for oak growth, whereas crown condition was significantly affected by spring and summer drought. This study is rep-resentative for similar bio-ecological habitats across Central Europe and can serve as a dendroclima-tological blueprint for earlier periods for which detailed meteorological information is missing

Dendroclimatic study of a mixed spruce-fir-beech forest in the Czech Republic

European forests are undergoing an important transition due to the current climate change, as monocultures are being gradually replaced by mixed forests. Understanding tree growth in mixed forests under a changing climate is challenging because of tree species’ adaptation and long-term forest planning. In this study, we evaluate the long-term behaviour of Norway spruce (Picea abies), silver fir (Abies alba) and European beech (Fagus sylvatica) from a low montane range at the Czech-Austrian border. Species-specific tree-ring width chronologies have revealed significantly decreasing growth trends since the 2000s. Temporally unstable climate–growth relationships showed an increasing negative effect of current growing season drought on spruce growth and a positive effect of dormant season temperature on fir and beech growth. Our results suggest that though species’ response to climate change differs in the mixed forest, growth reduction in the last years has been proved for all species, likely due to frequent climate extremes

Sustainability of shared economy in the agri-food, tourism, and hospitality industries

IntroductionThis study aims to provide a systematic literature review on the sustainability of shared economy in the food, agricultural, and hospitality sectors. We assess relationships between the sharing economy and sustainability in the examined industries. Furthermore, we identify gaps in knowledge and recommend possible research directions for future studies.MethodsThis study provides a systematic literature review on sustainable sharing economy in the hospitality and agri-food sectors. We applied the Procedure for Systematic Reviews and Meta-Analyses (PRISMA). Based on the mentioned methodological procedure, we conducted a literature search through scientific databases Scopus and Web of Science. The research period is 2014–2023.ResultsUsing the Procedure for Systematic Reviews and Meta-Analyses (PRISMA), we extracted 2185 scientific articles from the Scopus and Web of Science databases published between 2014 and 2023. A total of 117 studies met the eligibility criteria. Based on the review, we identified the following frequently researched areas in the literature: sustainable housing sharing, urban and community sustainability, energy efficiency and carbon footprint, public sector regulation and sustainability, food sharing, exchanges and networks, food waste-reducing platforms, and food-based applications.ConclusionThe studies reviewed confirmed growing research interest in the sustainability of the shared economy in agri-food and hospitality. The number of studies in the Web of Science and Scopus databases has increased over the last decade. Our systematic review indicates that shared accommodation and food sharing are dominant topics in the literature. The sustainability of shared accommodation has been examined in previous studies, mainly concerning the impacts on cities and communities. In food sharing, we identified relevant linkages between food waste and sharing platforms