Optical Field Calculations in GP-GPU

Tato práce popisuje poměrně novou techniku určenou na psaní vysoko paralelních programů, které název je OpenCL. Je určena jak pro GPU, tak i pro CPU a jiné paralelní procesory. Knižnice využívá architekturu procesoru, která obsahuje velké množství malých jader. Tyto jádra nejsou tak komplexní jako klasické procesory a proto se hodí pro výpočty, kterých je sice mnoho a jsou jednoduchá. Právě tato vlastnost by mohla za určitých podmínek urychlit výpočet hologramu, konkrétně výpočet optického pole. Samotný výpočet je sice jednoduchý, ale množství zpracovaných údajů je veliké a proto je pomalé. V práci nechybí taky základní pojmy vysvětlení optické a digitální holografie.This work describes a relatively new technique designed to write highly parallel programs, that name is OpenCL. It is intended for both GPU and CPU and other parallel processors. Libraries used by the processor architecture, which includes a large number of small cores. These cores are not as comprehensive as conventional processors and is therefore suitable for calculations, which are many and they are simple. It is this property could, under certain conditions, accelerate the calculation of the hologram, namely the calculation of the optical field. While the calculation itself is simple, but the amount of processed data is large and therefore slow. The work also contain the basic concepts of explanation of optical and digital holography.

Promoción estatal de formas autogestivas y asociativas de trabajo. Estudio de caso en un gobierno local en la provincia de Buenos Aires

International audienceIn the last decade in Argentina have been implemented programs at national level that have promoted self-managed and associative work guided by the principles of the social economy as a means of employment generation and social inclusion. The considerable spread of these programs and their influence on the creation of others at provincial and local level a set a trend linking employment policies with social promotion in the field of social economy policies. This article discusses the implementation by a local government in the province of Buenos Aires of a line of a national plan considering the policy's capabilities to generate sustainable ventures and to promote other types of work.En la última década en la Argentina se han implementado programas a nivel nacional que han promovido el trabajo autogestivo y asociativo guiado bajo los principios de la economía social como v ía de generación de empleo e inclusión social. La considerable difusión de estos programas y su influencia en la creación de otros a nivel provincial y municipal ha configurado una tendencia que trata de vincular políticas de empleo con políticas de promoción social en el campo de la economía social. En este artículo se analiza el modo de implementación de una línea incluida en un plan nacional desarrollado por un gobierno local en la provincia de Buenos Aires, considerando las capacidades de la política para generar emprendimientos sostenibles y promover otro tipo de trabaj

Nuclear Safety of Nuclear Power Plants Generation III.

Import 03/08/2012V této práci je v teoretické části zahrnut popis funkce, konstrukce a zabezpečení jaderných reaktorů III. Generace. Hned v úvodu je zmíněna historie reaktorů a důležité data a události, které měly na vývoj jaderné energetiky a zabezpečení zásadní vývoj. Dále pokračuje představením firem a jednotlivých reaktorů III. Generace. Jako další je v ní zahrnuto porovnání II. Generace s III. Generací u jednoho výrobce. Jako poslední je zde zmínka i o budoucnosti jaderných elektráren a to o generace IV a jeden z jejich konceptů SCWR. Výpočtová část zahrnuje návrh a výpočet výměníku pro havarijní doplňování. Je v ní spočítán tepelný výkon výměníku, kritéria pro proudění podle Reynoldse a Nusselta a výsledkem je počet trubek obsažený ve výměníku.This work is included in the theoretical description of the function, structure and security of nuclear reactors III. Generation. Right at the beginning of history is mentioned reactors and important dates and events that had on the development of nuclear energy and security crucial development. He continued performance of individual companies and reactor III. Generation. As more is included in the comparison II. Generation with III. Generations by the same manufacturer. The last mention is about the future of nuclear power generation and that of IV and one of the SCWR concepts. The design section includes the design and calculation of the heat exchanger for emergency replenishment. It has a calculated heat exchanger performance, according to the criteria for flow by Reynolds and Nusselt and the result is the number contained in the heat exchanger tubes.361 - Katedra energetikyvelmi dobř

Individual Professional Practice in the Company

Import 05/08/2014Cílem mé bakalářské práce je seznámit čtenáře s průběhem individuální odborné praxe, kde bylo mým úkolem plnit průběžně zadané úkoly spojené s projekční činností podniku. V úvodní části je představena firma Elvac a.s., její historie a současná působnost. Další a zároveň nejrozsáhlejší kapitolou je popis projektů, zadaných úkolů a uvedení jejich realizovaných řešení. Předposlední část je věnována popisu nabytých zkušeností a dovedností jak při studiu na vysoké škole, tak při absolvování odborné praxe. Na závěr je uvedeno celkové zhodnocení a hlavní přínosy individuální odborné praxe.The aim of this bachelor thesis is to familiarize the reader with the process of my individual professional practice. My task was to fulfill assignments related with the company projection activities. At the beginning Elvac a. s. company is introduced, as well as its history and current scope. The largest chapter of this bachelor thesis is focused on the description of projects, given tasks, and also at presentation of their implemented solutions. Another part is aimed at describing my experiences and skills gained while studying at university and at passing my professional practice too. Finally, overall assessment and main benefits from this professional practice are shown.420 - Katedra elektrotechnikyvýborn

Data Processing from GPS Receiver

Tato práce pojednává o zpracování dat z GPS přijímače, konkrétně o zpracování výškových map. V první části jsou rozebrány principy technologií GPS a protokolu NMEA s cílem pochopit výpočet aktuální pozice na mapě pomocí zeměpisných souřadnic. Dále je analyzována komunikace s přijímačem GPS, zpracování dat pro práci s mapou a zobrazení pozice. Návrh a implementace výsledné aplikace, jež je koncipována jako grafické uživatelské rozhraní, je následně detailně popsána. Konečné testování, které bylo provedeno v reálném terénu za pomocí GPS přijímače u-blox 5, a výsledky chování aplikace jsou uvedeny na konci práce. V závěru je zhodnoceno splnění cílů zadání a požadavků práce a jsou navrženy možnosti rozšíření projektu.This bachelor thesis is about data processing from GPS receiver, specifically about surface maps. In the beginning part, principles of GPS technologies and NMEA protocol are described to understand calculation actual position on the map using geographic coordinates. It analyses communication with GPS receiver, data processing to maps and display position. Concept and implementation of final application, which is proposed as graphical user interface, is descibed. Application has been tested in terrain with GPS receiver u-blox 5 and results behavior application are at the end of bachelor. As a result of the bachelor, executed targets and requierement is summarized and possibilities of uprading project are analysed.

Rationalizing the Band Gap Tunability of Semiconductors via Electronic Structure Calculations

The polymorphs of titanium dioxide and various diamond-like semiconductor materials are promising candidates in photovoltaic solar cell applications. Several of these polymorphs have been studied with experimental and computational methods, which often aim at tuning the electronic structure, particularly the band gap value of the crystalline solid. Prior studies report that the addition of a substituent into the structure of titanium dioxide decreases its band gap value, but the reasons for this are unknown. Possible explanations for the change in band gap involve the substituent atom\u27s crystal radius, electronegativity, and ionization energy. Understanding the cause of these changes will provide great insight in designing new materials. The hypothesis of this work is that a substituent atom\u27s crystal radius has a greater impact on the change in band gap of titanium dioxide than the substituent atom\u27s electronegativity. In an aim to test this hypothesis, atoms of differing chemical properties were selected for substitution into the rutile and anatase polymorphs of titanium dioxide. The electronic structure (band structure and density of states) of the substituted systems was calculated using the full-potential linearized-augmented plane wave approach of density functional theory in the WIEN2k software. Upon calculating the electronic structure, the relationships between the band gap value and various chemical properties were evaluated

Education and training in cooperatives and employment programs, and social economy in Argentina

A partir de la última década en la Argentina se implementaron programas de inserción socio-laboral en el ámbito de la economía social conjuntamente con la revalorización de la política nacional de formación profesional como una vía de desarrollo individual y colectivo. A fin de comprender en qué contexto tienen lugar las acciones formativas en los programas de economía social se recorre brevemente el estado de la capacitación en las cooperativas a nivel nacional. Son analizados dos programas del Ministerio de Desarrollo Social de la Nación Argentina que promueven la inclusión socio-laboral dentro del marco de la economía social, considerando sus resultados a nivel nacional y su implementación en un gobierno municipal.A partir da última década na Argentina foram implementados programas de inserção no mercado de trabalho e na sociedade no âmbito da economia social, conjuntamente com a revalorização da política nacional de formação profissional como uma via de desenvolvimento individual e coletivo. A fim de entender em que contexto acontecem as ações de formação nos programas de economia social são recorridos brevemente o estado de capacitação nas cooperativas a nível nacional. São analisados dois programas do Ministério do Desenvolvimento Social da Nação Argentina que promovem a inclusão no mercado de trabalho e na sociedade dentro do quadro da economia social, considerando seus resultados a nível nacional e sua implementação em um governo municipal.As of the last decade in Argentina were implemented programs for social and labour inclusion in the field of social economy, together with the revaluation of the national policy of vocational education, as a means of individual and collective development. In order to understand the context in which the training takes place in the social economy programs, this paper explores briefly the state of training in cooperatives nationwide. It analyzes two programs of the Ministry of Social Development of Argentina, which promote social and labour inclusion in the context of the social economy, considering their results at national level and its implementation in a municipal government.Fil: Srnec, Cynthia Cecilia. Universidad de Buenos Aires. Facultad de Ciencias Económicas. Instituto de Investigaciones Administrativas. Centro de Estudios de Sociología del Trabajo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

accelerated cyclic plasticity models for fem analysis of steelmaking components under thermal loads

Abstract Steelmaking components are often subjected to thermo-mechanical loads applied cyclically. In this case the choice of a suitable cyclic plastic model to be used in the numerical simulation is a crucial aspect in design. Combined (kinematic and isotropic) model permits the cyclic material behavior to be captured accurately. On the other hand, such model often requires unfeasible computational time to arrive at complete material stabilization. Simplified or accelerated models have then been proposed to make simulation faster. In this work, the thermo-mechanical analysis of a round mold for continuous casting is addressed as a case study. Due to axi-symmetry, a plane model can be adopted. This permits a finite element (FE) analysis with a combined model to be performed until complete stabilization. A comparison with other models able to speed up the simulation (accelerated models with increased values of saturation speed, Prager and stabilized models) was performed. It was found that only accelerated models give equivalent strain range values that do not significantly differ from the (reference) combined model, independently from the speed of saturation adopted