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The contribution describe cultivation process of Zea mays. The effect of soil and biochar on plant growth is discussed.

Farey sequences, introduced by such renowned mathematicians as John Farey, Charles Haros, and Augustin-L. Cauchy over 200 years ago, are quite well- known by today in theory of fractions, but its computational perspectives are pos- sibly not yet explored up to its merit. In this paper, we present some novel theoret- ical results and e cient algorithms for representation of a Farey sequence through a Farey table. The ranks of the fractions in a Farey sequence are stored in the Farey table to provide an e cient solution to the rank problem, thereby aiding in and speeding up any application frequently requiring fraction ranks for computational speed-up. As the size of the Farey sequence grows quadratically with its order, the Farey table becomes inadvertently large, which calls for its (lossy) compression up to a permissible error. We have, therefore, proposed two compression schemes to obtain a compressed Farey table (CFT). The necessary analysis has been done in detail to derive the error bound in a CFT. As the nal step towards space opti- mization, we have also shown how a CFT can be stored in a 1-dimensional array. Experimental results have been furnished to demonstrate the characteristics and e ciency of a Farey table and its compressed form.

This Special Section in IEEE ACCESS aimed to arise the interest of the scientific community and to attract original research to advance the state of the art in behavioral biometrics for e-health and well-being. It is an opportunity to gain a significantly better understanding of the field’s current developments and future direction.

30 June 1937 is the birthday of Professor Ladislav Skula, our colleague at the Institute of Mathematics of the BUT Faculty of Mechanical Engineering, a distinguished editorial board member of this journal, and an outstanding Brno mathematician of world renown.

This paper reports results of analysis of field ion emission mechanism from tungstenepoxy composite emitters that are compared to tungsten nanofield emitters. In this context, the mechanism of emission from this type of emitters is described based on a theory of induced conductive channels. The tungsten emitters were prepared using the electrochemical polishing technique and coated with a layer of the epoxy resin. Field ion microscope (FIM) analyses are reported including the study of the emissionion density distributions from both the uncoated and coated emitters. Two forms of emission patterns have been observed in the ion emission microscopy technique describing the differences in the emission mechanism of both types of emitters. The observed results show: (a) the expected crystalline surface atomic distribution images of the field ion microscopy in the case of uncoated tungsten tips, and (b) randomly distributed emission spots that describe the locations of the induced conductive channels inside the resin coating layer.

Low complexity and high speed are the key requirements of the digital filters. These filters can be realized using allpass filters. In this paper, design and minimum multiplier implementation of a fixed point lattice wave digital filter (WDF) based on three port parallel adaptor allpass structure is proposed. Here, the second-order allpass sections are implemented with three port parallel adaptor allpass structures. A design-level area optimization is done by converting constant multipliers into shifts and adds using canonical signed digit (CSD) techniques. The proposed implementation reduces the latency of the critical loop by reducing the number of components (adders and multipliers). Three design examples are included to analyze the effectiveness of the proposed approach. These are implemented in verilog HDL language and mapped to a standard cell library in a 0.18 μm CMOS process. The functionality of the implementations have been verified by applying number of different input vectors. Results and simulations demonstrate that the proposed design method leads to an efficient lattice WDF in terms of maximum sampling frequency. The cost to pay is small area overhead. The postlayout simulations have been done by HSPICE with CMOS transistors.

The decelerated swirling flow often breaks down into helical structure which is unstable and causes unsteady velocity and pressure fields. The numerical and experimental investigation of this flow pattern is carried out on the experimental apparatus consisting of the swirl generator (source of strong swirling flow) and the conical diffuser (equipped with the series of pressure transducers). The experimental measurements are focused on complex pressure measurements in order to distinguish between synchronous and asynchronous pulsations induced by the vortex structure and examine their changes in relation to the flow rate. The numerical simulations are carried out to visualize vortex shape and compare computed pressure fields with the experimental ones. The open source CFD software OpenFOAM employing realizable k- turbulence model is used for the numerical simulations. Agreements between numerical end experimental results are discussed. Vířivé proudění se často rozpadne do spirální vírové struktůry, která je nestabilní a způsobuje nestacionární rychlostní a tlakové pole. Byl proveden numerický a expeimentální výzkum tohoto jevu s využitím experimentálního zařízení - vírového generátoru (zdroj silného zavíření) a kónického difuzoru (osazeného tlakovými snímačemi). Experimentální měření je zaměřeno na rozklad tlakových pulzací do synchroních a asynchroních složek a jejich změnu se zvyšujícícm se průtokem. S využitím numerické simulace je provedena vizualizace tvaru vírové struktůry a porovnání spočteného tlakového pole s experimentálním měřením. Pro numerický výpočet byl využit open-source CFD software OpenFOAM s k- modelem turbulence. Závěrem byla sledována shoda experimentu s numerickým výpočtem.

Poster presented at the WORLD MULTIDISCIPLINARY CONGRESS on Civil Engineering, Architecture and Urban Planning conference. Approximately a quarter of the Czech population lives in panel housing estates. Despite such a large residential structure, some data are difficult to trace. The article focuses mainly on panel housing estates in Brno. It aims to make the available data (Czech Statistical Office, cadastre, vector data, etc.) more transparent, even in graphical maps. The panel housing estates Kohoutovice, Lesná, Starý and Nový Lískovec, Vinohrady, and Komárov are described. The selection was based on the maximum possible variety of urban structures and constellations. The main topic of the text is the structural systems of Brno's panel housing estates (Series G, T0xB, VVÚ-ETA, B70, OP, etc.), and their impact on the form of public space is examined. Among other things, the ratio of built-up and unbuilt-up areas, the percentage of transport, greenery, and the representation of public amenities within a particular panel housing estate were investigated. It also describes the possibilities of adaptation of a specific structural system and the extent of current reconstructions in a given panel housing estate. On the scale of an apartment (layout changes), an apartment building (extensions, additions), and the whole housing estate (adaptation to increased traffic load, etc.). The most widely observed reconstruction element is the addition of higher floors, mainly in Brno-Kohoutovice. The ownership structure is also described as houses and public spaces, where the owner can be either a private owner (residents of the house, co-owners, or investors) or public ownership (the city or municipality). Among the individual settlements, it is possible to observe, for example, the highest percentage of green space, the highest average number of flats in an apartment building, or the highest percentage of urban land. A trend abroad and slowly in the Czech Republic is the comprehensive revitalization of panel housing estates in terms of buildings and public space. Data can indicate the potential development of panel housing estates and the future usability of individual construction systems. Plakát prezentovaný na konferenci WORLD MULTIDISCIPLINARY CONGRESS on Civil Engineering, Architecture and Urban Planning. Přibližně čtvrtina české populace žije na panelových sídlištích. Navzdory tak rozsáhlé obytné struktuře je některá data obtížné dohledat. Článek se zaměřuje především na panelová sídliště v Brně. Cílem je zpřehlednit dostupná data (Český statistický úřad, katastr, vektorová data atd.), a to i prostřednictvím grafických map. Popsána jsou sídliště Kohoutovice, Lesná, Starý a Nový Lískovec, Vinohrady a Komárov. Výběr byl založen na co největší rozmanitosti urbanistických struktur a uspořádání. Hlavním tématem textu jsou konstrukční systémy brněnských panelových sídlišť (řady G, T0xB, VVÚ-ETA, B70, OP atd.) a jejich dopad na podobu veřejného prostoru. Mimo jiné byl zkoumán poměr zastavěných a nezastavěných ploch, procento ploch dopravy, zeleně a zastoupení veřejné vybavenosti v rámci konkrétního panelového sídliště. Text také popisuje možnosti adaptace konkrétního konstrukčního systému a rozsah současných rekonstrukcí na daném panelovém sídlišti. Na úrovni bytu (změny dispozic), bytového domu (nástavby, přístavby) a celého sídliště (adaptace na zvýšené dopravní zatížení atd.). Nejčastějším prvkem rekonstrukcí jsou nástavby vyšších pater, zejména v Brně-Kohoutovicích. Popisována je rovněž vlastnická struktura domů a veřejných prostor, kde vlastníkem může být buď soukromý vlastník (obyvatelé domu, spoluvlastníci či investoři), nebo veřejný vlastník (město či obec). Mezi jednotlivými sídlišti lze pozorovat například nejvyšší procento zelených ploch, nejvyšší průměrný počet bytů v jednom bytovém domě nebo nejvyšší podíl městských pozemků. Trendem v zahraničí, který se pomalu prosazuje i v České republice, je komplexní revitalizace panelových sídlišť jak v oblasti budov, tak veřejného prostoru. Data mohou naznačit potenciální rozvoj panelových sídlišť a budoucí využitelnost jednotlivých konstrukčních systémů.

In present work we have used firstprinciples calculations based on density functional theory (DFT) to simulate magneto-optical (MO) Kerr spectra for different phases of Ni2MnGa alloy: austenite, nonmodulated martensite without nanotwinning and nanotwined martensite represented by 4O structure. The MO spectra provide a valuable insight into the mutual dependence of the the structure of the material and electronic structure and magnetic ordering.

We have discussed the impact on experimental characteristics which are important to detect localized surface plasmon peaks in EELS successfully, namely: the intensity of plasmonic signal, the signal to background ratio, and the signal to zero-loss peak ratio considering a limited dynamic range of the spectrometer camera.