The new system of steel structure vertical bracing

Výstavba objektů, jejíž konstrukce musí odolávat horizontálním silám, které tvoří především proud vzduchu, zemětřesení a mnoho dalších, klade zvýšené nároky na ztužení odolávající těmto silám. Mezi tyto konstrukce především patří stožáry, rozhledny a výškové budovy. Velké štíhlosti vertikálních konstrukcí, vyžadující vyšší nároky na tuhost ztužidel, přinášejí prostor pro nové netradiční řešení, které je předmětem uvedeného článku.Construction of buildings whose design must withstand the horizontal forces, consisting primarily of wind stream, water, earthquake, and many others, puts greater demands on the reinforcement to withstand these forces. These structures include masts, towers, high-rise buildings and more. Large slender vertical structures requiring higher stiffness bracing provide space for new innovative solution, which is the subject of the article

Objective Methods for Assessments of Influence of IVIS (In-Vehicle Information Systems) on Safe Driving

The main objective of experiments focused on assessments of in-car devices (IVIS in this case) is to evaluate objectively their influence on safety and comfort of driving. This paper presents a big set of experiments performed on our driving simulators. Besides the experiment setup, it describes several different methods used for the classification of driver behavior based either on analysis of technical outputs from simulated driving or subjective and psycho-physiological measures. The aim of the whole project is to find out the objective methodology (a complex set of methods) for assessment of IVIS (or further any HMI devices used in the cars) with respect to drivers’ skills and personalities

Tube heat exchanger for heating water.

Ciežom diplomovej práce je podža zadaných a zvolených hodnôt navrhnúť výmenník tepla vzduch - voda s prúdením vzduchu vo vnútri trubiek a s vystriedaným usporiadaním trubiek. Ďalšou úlohou bolo vypočítať súprúdny a protiprúdny variant, tlakové straty na strane vzduchu a vody a geometrické rozmery vstupných a výstupných hrdiel.Target of the master´ thesis is a design of heat exchanger air-water with the air flowing inside the pipes and with staggered pipe configuration, based on the engaged and chosen values. Next target is to determine heat exchanger with cross parallel flow and cross countercurrent flow of mediums, pressure drop on both sides air and water and dimensions of intake and outgoing gate on both sides air and water.

Transmission of Audio Data Using RTP Protocol

Tato práce se zabývá technologií multimediálního přenosu v reálném čase. Úvod práce je vyhrazen pro vrstvený model TCP/IP. Dále se bakalářská práce zaměřuje na teoretický návrh aplikace, která je schopna přenášet zvuková data minimálně mezi dvěma počítači pomocí protokolu RTP. Tuto část zahrnují protokoly pro přenos dat v reálném čase, zvláště pak protokol RTP a dále pak volně dostupné knihovny sepsané v jazyce C a C++, ve kterých je právě protokol RTP implementován. Z těchto poznatků nadále vychází závěr práce, ve kterém je teoretický návrh aplikace realizován, a to ve vývojovém prostředí Borland Builder C++.This project is about technology of multimedia transmission in the real time. Introduction of this work narrate model TCP/IP. Next the bachelor´s thesis is principally aimed on theoretical design of application, which is minimally able to transfer audio data between two computers by the help of the protocol RTP. This part is included in protocols for transmission of data in the real time, especially protocol RTP and then freely accessible libraries, which are written in language C and C++, in which is RTP protocol just implemented. End of this work comes out from these knowledges, in which is realized theoretical design and it is in developmental environment of Borland Builder C++.

Basic Summary of the International Civil Airports of European States

V práci bylo třeba se nejprve seznámit s problematikou vývoje letišť, kde jsem vycházel ze základní myšlenky: „ nejprve bylo sestrojeno letadlo, a pak se stavělo letiště“. Práce obsahuje rozdělení letišť dle našeho ministerstva dopravy a právních předpisů civilního letectví. Hodnotil jsem letiště 37 států ze 41 států v Evropě. Zbývající čtyři státy nemohly být hodnoceny, protože nemají vlastní letiště. Cílem bylo shromáždit soubor hlavních mezinárodních letišť jednotlivých států evropského regionu. Byly vybrány a porovnávány charakteristické provozní parametry, týkající se dráhového systému, přístrojové RWY, kategorie požární bezpečnosti, počtu odbavených cestujících a vzdálenosti od města. Dalším cílem byla srovnávací analýza. Analýza byla realizována pomocí tabulek a grafů v programu Excel. V závěru práce byla porovnána jednotlivá letiště.In this work it was necessary to get acquainted with the problems concerning the development of airports at first. The essential idea was : "the first step was to construct an airplane, and the construction of an airport came only after it." The airports were classified according to the classification made by our Ministry of Transport and according to legal enactments. Airports of thirty-seven states out of forty-one states of Europe were rated. The resting four countries couldn´t be rated, because they don´t have their own airports. The aim of this work was to gather the set of main international airports of the individual states of European area. A comparing analysis according to the runway system, to instrument runway, to category for fire fighting, to number of passengers and the distance from the centre of the capital was made. Another aim was a comparing analysis. This analysis was realized by means of charts and diagrams in Excel programme. In the last part of this work individual airports were compared.

Evaluation design of civil airports effectivity indices

Úvodní část práce zahrnuje vývoj letecké dopravy, členění letišť podle Ministerstva dopravy v ČR, podle zákona o civilním letectví a dle kódového značení letišť (předpis L 14). Cílem bylo provést teoretické definování a rozdělení výkonových a ekonomických ukazatelů. Pak následuje výběr vhodných letišť z EU. Výběr byl proveden na základě počtu odbavených cestujících na letišti Praha Ruzyně. Z EU bylo vybráno osm nejvhodnějších letišť ze všech dvaceti sedmi členských států. U těchto vybraných letišť následuje srovnávací analýza na základě vybraných výkonových a ekonomických ukazatelů za rok 2005 až 2009. Rok 2010 nebyl zahrnut, protože vybraná letiště neměla zpracovány výroční zprávy, rozvahy a výkazy zisků a ztrát. Z těchto dokladů byly vybírány hodnoty pro výpočet jednotlivých ukazatelů, které byly zpřehledněny v tabulkách, vyhodnoceny pomocí grafů v programu Excel a dále byly jednotlivé ukazatele slovně vyhodnoceny. Cílem bylo i vyhodnocení a srovnání výkonových a ekonomických ukazatelů efektivity a po zhodnocení následoval návrh metod hodnocení.Introductory part of this thesis concludes the development of air traffic, division of airports in the Czech Republic according to the Ministry of Transport, according to the Law on Civil Aviation and according to the Coding of the airports (Requirement L 14). The aim was to realize theoretical definition and division of output and economic indicators. After that comes choice of appropriate airports from the European Union. The choice has been made on the basis of the number of check-in passengers at the airport in Prague-Ruzyně. Eight most suitable airports have been chosen from all twenty-seven member countries of the EU. The following step is comparative analysis of these chosen airports on the basis of specified output and economic indicators for the years 2005-2009. The year 2010 has not been included, because the chosen airports did not complete their annual reports, balances and statements of profit and loss. From these sources the values for calculation of individual indicators have been chosen. These indicators have been shown in charts, evaluated by means of graphs in Excel Programme and further they have been characterized in words. The aim of the thesis was also the evaluation and comparison of output and economic indicators of effectiveness and after evaluation, proposal of methods of evaluations has followed.

LIMONITOVÁ MINERALIZACE V NĚMČICKÉM KRASU

Limonite occurrences are hosted by the Devonian limestones belonging to Němčice-Vratíkov belt. This belt can by interpreted as NNW–SSE trending tectonic slice between the granodiorites Brno massif and Lower Carboniferous Culm sediments. Mineralization is localized along faults in limestone and filling small caves belonging to the Němčice Karst. According to mineralogical and textural features are studied ores interpreted as product of limestones interaction with acid solutions generated during weathering of pyrite-rich Creatacerous sediments. Two main stages evolution can be recognized. During first stage circulate iron rich solutions along pre-existing narrow fractures and faults. Under reduction conditions crystallize pyrite and replaced of the host rock and fossils. During second oxidation stage was empty caves partially filling by limonite sometimes with small intercalations clastic sediments. During this stage limonite ore was partial silicificated and calcificated

Librarians as Designers : Case Studies on Improvement of Library Services

This book is a result of our desire to show how service design works in selected libraries by means of case studies. It is certainly not an overview of everything that is going on in the field of design thinking in Czech libraries. The aim of the examples of use, which are described in this book, is to serve as a source of inspiration and encouragement to those who think about the needs of users in their own libraries

MOBILIZACE CHEMICKÝCH SLOŽEK STRUSKOVÉ DEPONIE V NÁRODNÍ PŘÍRODNÍ REZERVACI RUDICKÉ PROPADÁNÍ

The Rudice swallow hole (Rudické propadání) National Nature Monument is a locality affected by occasional mass movements and landslides. During exceptional rainfall events, the slag material from the slopes of a small valley called “Ve struskách” (“In the Slags”) slides into an episodic stream, which enters the local karst system near the swallow hole of the Jedovnice Creek (Jedovnický potok).The slag was dumped in the locality in consequence of the past processing of iron ore in blast furnaces, which had been built near Jedovnice by the princely Salm family in the 19th century. Even though the blast furnaces were closed down a hundred years ago, the slag components leaking into the Rudice stream sink cave system still demonstrably damage the speleothems. This was the majorimpulse for us to have a closer look at the geochemical properties of the slag.The chemical composition was determined by silicate analyses carried out in the Institute of Geological Sciences at the Faculty of Sciences of the Masaryk University in Brno and in the ACME laboratories in Canada. The ACME laboratories determined heavy metal contents by atomic absorption spectroscopy (AAS) and by inductively coupled plasma mass spectrometry (ICP-MS). The petrographic characterization of the slag and its enclosures was conducted based on point analyses by a wavelength dispersive X ray (WDX) electron microprobe. Predictions regarding the geochemical behavior of the slag components in an aqueous environment were made using the sequential extraction analysis (SEA) according to Tessier (1979).We have found the expected spatial variability of the basic chemical composition of the slag dumps, as well as the presence of heavy metals (cadmium and especially zinc are present at high concentrations).The slag material exhibits a glassy amorphous structure containing occasional mineral crystals, droplets of pure or oxidized iron and fragments of other materials (such as charcoal or blast furnace bricks). The ongoing weathering of the slag is accompanied by oxidation of crude iron and formation of limonite. Apart from that, the material is not subject to signifi cant secondary transformations. The results of the sequential extraction analyses of slag and soil samples suggest that Cd and Zn are chemically bound to the “carbonate fraction”, which, in general, tends to dissolve under acidic conditions. Even though the environment of the carbonate rock cave systems is typically alkaline, there is a persisting risk of mobilization of heavy metals by acid soil solutions. From the environmental point of view, the slag deposition primarily represents a source of clastic material, which contaminates the cave system and damages speleothems by mechanical abrasion

Effect of dexamethasone in patients with ARDS and COVID-19 (REMED trial)—study protocol for a prospective, multi-centre, open-label, parallel-group, randomized controlled trial

BACKGROUND: Since December 2019, SARS-CoV-2 virus has infected millions of people worldwide. In patients with COVID-19 pneumonia in need of oxygen therapy or mechanical ventilation, dexamethasone 6 mg per day is currently recommended. However, the dose of 6 mg of dexamethasone is currently being reappraised and may miss important therapeutic potential or may prevent potential deleterious effects of higher doses of corticosteroids. METHODS: REMED is a prospective, open-label, randomised controlled trial testing the superiority of dexamethasone 20 mg (dexamethasone 20 mg on days 1-5, followed by dexamethasone 10 mg on days 6-10) vs 6 mg administered once daily intravenously for 10 days in adult patients with moderate or severe ARDS due to confirmed COVID-19. Three hundred participants will be enrolled and followed up for 360 days after randomization. Patients will be randomised in a 1:1 ratio into one of the two treatment arms. The following stratification factors will be applied: age, Charlson Comorbidity Index, CRP levels and trial centre. The primary endpoint is the number of ventilator-free days (VFDs) at 28 days after randomisation. The secondary endpoints are mortality from any cause at 60 days after randomisation; dynamics of the inflammatory marker, change in WHO Clinical Progression Scale at day 14; and adverse events related to corticosteroids and independence at 90 days after randomisation assessed by the Barthel Index. The long-term outcomes of this study are to assess long-term consequences on mortality and quality of life at 180 and 360 days. The study will be conducted in the intensive care units (ICUs) of ten university hospitals in the Czech Republic. DISCUSSION: We aim to compare two different doses of dexamethasone in patients with moderate to severe ARDS undergoing mechanical ventilation regarding efficacy and safety. TRIAL REGISTRATION: EudraCT No. 2020-005887-70. ClinicalTrials.gov NCT04663555. Registered on December 11, 2020