117 research outputs found
Model of Electronic Trading in International Interbank Foreign Exchange
Bakalářská práce se zabývá investováním na devizovém trhu. Popisuje současný stav u vybraných měnových párů a charakterizuje jejich chování. Navrhuje efektivní postup elektronického obchodování za použití obchodní platformy. Vysvětluje jak funguje technická a fundamentální analýza. Hlavní důraz je kladen na technickou analýzu a její technické indikátory. V návrhu popisuje rozhodovací metody, které nám říkají, kdy máme vstoupit do trhu a kdy z něho naopak vystoupit tak, abychom maximalizovali naše zisky a minimalizovali ztráty.This bachelor’s thesis engages in investing in the foregin exchange market. It desribes recent portfolio of chosen currency pairs and characterizis their behaviour. It proposes an effective method of electronic trading using the trading platform. It explains how technical and fundamental analysis work. The main vehemence is layed on technical analysis and it’s technical indicators. In it’s concept it describes the decesive methods, which give us the signals when to open a trade and when to get out of it, in order to maximise our profits and minimise our losses.
Business Plan of Development
Cílem této diplomové práce je navrhnout podnikatelský záměr pro rozvoj elektronického obchodu prodávajícího japonské kuchyňské nože. Teoretická část popisuje formy podnikání, způsob sestavování podnikatelského záměru a náležitosti založení elektronického obchodu. V analytické části je popsán současný stav obchodu Jakuno a situace e-komerce v České republice. Závěr práce se zabývá již samotným podnikatelským záměrem a předkládá svoje návrhy pro zlepšení výkonnosti podniku.The goal of this master’s thesis is to suggest a business plan of development for e - shop expansion, that sells japanese kitchen knives. The theoretical part describes the forms of business, the method of composing a business plan and the requirements for establishing an e – shop. In the analytical part, the contemporary situation of the e – shop Jakuno is described and the situation of e-commerce in Czech Repulic as well. The conclusion of this thesis deals with the business plan itself and proposes its suggestions for improving the company efficiency.
INFLUENCE OF MACHINING TECHNOLOGIES ON VALUES OF RESIDUAL STRESSES OF OXIDE CUTTING CERAMICS
Currently, the intensive development of engineering ceramic and effort to replace sintered carbides as cutting materials are in progress. With the development of the sintering technology it is now possible to produce compact ceramic cutting samples with very good mechanical properties. The advantage of these materials is their easy accessibility and low purchase price. In this work, the influence of the finishing machine technology on the values of surface residual stresses of cutting ceramic samples Al2O3+TiC were studying. The samples were supplied by Moscow State University of Technology STANKIN. Measurements made in the X-ray diffraction laboratory at the Department of solid state engineering were performed for both the phases. The influence of the parameters of machining to residual stresses was studied and the resulting values were compared with each other
Diffraction analysis of corroded samples of npp secondary circuit pipes before and after cold spray coating application
Cílem depozice nástřiku pomocí vysoce urychleného prášku za studena (tzv. metoda Cold
Spray) na vnitřní povrch korodovaných částí potrubí sekundárního okruhu jaderných elektráren
(JE) je vytvoření povlaku s vysokou odolností vůči korozi, za účelem prodloužení životnosti
především kolen potrubí sekundárního okruhu. Pomocí rentgenografických difrakčních metod
byla stanovena jak makroskopická zbytková napětí, tak i fázové složení a parametry reálné
struktury (mikrodeformace, velikost krystalitů) povrchových vrstev korodovaných vzorků potrubí sekundárního okruhu JE před a po aplikaci nástřiku metodou Cold Spray. Z výsledků lze
soudit, že metoda Cold Spray je progresivní technologie, která by dokázala výrazně zlevnit
opravy a zkrátit neplánované prodloužení odstávek bloků JE.Práce byla podpořena projektem CZ.02.1.01/0.0/0.0/16_019/0000778 „Centrum pokročilých aplikovaných přírodních věd“ v rámci Operačního programu výzkum, vývoj, vzdělávání
pod dohledem Ministerstva školství, mládeže a tělovýchovy České republiky a grantem Studentské grantové soutěže ČVUT č. SGS22/183/OHK4/3T/14.The aim of depositing a coating using the so-called Cold Spray on the inner surface of
the corroded parts of the pipeline of the secondary circuit of the nuclear power plants (NPP) is
to create a surface with high corrosion resistance, to extend the service life, especially of the elbows of the secondary circuit. X-ray diffraction methods were used to determine the macroscopic residual stresses, phase composition, and real structure parameters (microstrain,
crystallite size) in the surface layers of corroded pipes of samples of the secondary circuit of
the NPP before and after the Cold Spray application. From the results, it can be judged that the
Cold Spray method is a progressive technology that could significantly reduce the cost of repairs and shorten the unplanned extension of the shutdown of NPP units
Effects of advanced laser processing on the microstructure and residual stresses of H13 tool steel
Effects of advanced laser processing on the microstructure and residual stresses of H13 tool steel
COMPARISON OF PARAMETERS OF SURFACE INTEGRITY OF MACHINED DUPLEX AND AUSTENITE STAINLESS STEELS IN RELATION TO TOOL GEOMETRY
The goal of this contribution was to describe parameters of surface integrity of two machined materials; austenite and duplex stainless steel. Residual stresses and presence of straininduced martensite were studied as a function of the side rake angle. Residual stresses of surface and sub-surface layers were determined using X-ray diffraction techniques and hole-drilling method. By using X-ray diffraction, it is possible to determine residual stresses in each phase separately, in comparison with hole-drilling method. The presence of strain-induced martensite was investigated using Barkhausen noise and optical microscope
Effects of advanced laser processing on the microstructure and residual stresses of H13 tool steel
The aim of this paper is to describe the effects of laser processing on the microstructure and residual stresses of laser cladded H13 tool steel on the classical construct steel S355 substrate. This research paper concludes that in this case of laser cladding, phase transformation and not shrinkage is likely to be a dominant effect on the formation of compressive residual stresses along the clad. Furthermore, martensitic structure and unequal concentration of alloying elements was observed on the cross-section of the clad using electron backscattering diffraction and energy-dispersive X-ray spectroscopy.</p
MECHANICAL PROPERTIES OF FORGED TUNGSTEN HEAVY ALLOYS
Tungsten heavy alloys are composite materials containing spherical tungsten particles embedded in binder matrix. Their excellent mechanical properties can be further improved by rotary forging. This paper aims to gain deeper understanding of the forging process by investigating the local elastic modulus, hardness, and residual stress of individual phases in W6Ni3Co pseudo-alloy. The resulting global properties of the composite material such as stress-strain behavior, fracture toughness and fatigue crack growth rate behavior are also studied. The results show that sintered and quenched material consists of highly textured matrix containing nearly perfect single crystal spheres of pure W. The rotary forging leads to significant lattice deformations destroying the texture and significantly increasing the hardness of both WNiCo matrix and W particles and making residual stresses in W particles anisotropic with increased compression along the longitudinal axis of the forged part
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