The diploma thesis is focused on the optical beam propagating in the atmosphere in a wireless communication optical link. The first part of the work explains the atmospheric transmission media with turbulence and its effects on reliability of the optical system. The second part introduces methods for turbulence determination based on a statistical approach to turbulence quantification are introduced. In the third part, method of equivalent temperature gradient is described with the advantage of immediate turbulence evaluation. The output of this thesis is the model of turbulent environment formed by the optical elements. Analysis of turbulent properties and non-reciprocal nature of turbulent channel is processed by a 2D simulator based on the mentioned model and method of equivalent temperature gradient.

Med den rådande befolkningsökningen tyder prognosen över bostadsförsörjningen att de behövs byggas fler bostäder för att uppfylla bostadsbehovet. Byggnadsbranschen står idag för cirka 20 % utav det totala koldioxidutsläppen i Sverige. Av detta skäl finns det ett behov att utveckla mer miljövänligare och hållbara tekniker för att uppfylla de ställda kraven gällande hållbart byggande. Trä och konstruerade träprodukter anses vara ett miljövänligt material och bör användas som stommaterial i byggnader i större utsträckning än det görs idag.    Detta arbete innefattar att jämföra de strukturella prestanda hos limträbalkar och armerade betongbalkar i flervåningsbyggnad. Som startpunkt modelleras en befintlig byggnad utifrån de dokument som tillhandhålls av ritningar och andra anvisningar för den avsedda referensbyggnaden. Bärverksanalysen utfördes i FEM-design till syfte att kontrollera limträbalkar beteende i nedböjning, spänning, tvärsnittsmått och bärighet. Arbetet genomfördes i två steg, referens byggnadens betongkonstruktion modelleras noggrant i första steget. I det andra steget ersätts armerade betongbalkar av limträbalkar i syfte att jämföra deras strukturella prestanda.     Det erhållna visar att limträets lätta vikt medför en minskning på ca 24 % på byggnadens totalvikt. Styvhetsegenskaper är limträbalkar största nackdel jämfört med armerad betongbalk, eftersom ett utbytte av balkarna med liknande dimension i 8 m spännvidd gav upphov till ca 65 % ökning på deformationer. Vid användning av limträbalkar ska spännvidden på 8 m halveras, samt större limträtvärsnitt och pelare placeras ut för att uppfylla det ställda kraven gällande bruks-och brottgränstillståndet. / With the prevailing population increase, the forecast of housing supply indicates that more housing needs to be built to meet the housing need. The construction industry today accounts for about 20% of the total carbon dioxide emissions in Sweden. For this reason, there is a need to develop more environmentally friendly and sustainable technologies to meet the set requirements regarding sustainable construction. Wood and constructed wood products are considered an environmentally friendly material and should be used as frame materials for buildings to a greater extent than is done today.   This work includes comparing the structural performance of glulam beams and reinforced concrete beams in multi-story building. As a starting point, an existing building is modeled on the basis of the documents provided by drawings and other instructions for the intended reference building. The structural analysis was performed in FEM design for the purpose of checking the behavior of glulam beams in deflection, stress, cross-sectional dimensions and load-bearing capacity. The work was carried out in two stages, the reference building's reinforced concrete structure is carefully modeled in the first stage. In the second stage, reinforced concrete beams are replaced by glulam beams in order to compare their structural performance.   The results show that the light weight of glulam leads to a reduction of about 24% in the total weight of the building. Rigidity properties are the biggest disadvantages of glulam beams compared to reinforced concrete beams, since a replacement of the beams with a similar dimension in 8 m span gave rise to about 65% increase in deformations. When using glulam beams, the span of 8 m must be halved, and larger glulam cross-sections and columns must be placed to meet the set requirements regarding serviceability and ultimate limit states.

Diploma thesis deals with polarization properties of an optical beam and the determination of its polarization state by means of the proposed automatic measurement method. Furthermore the influence of an environment on the polarization state of the optical wave is studied. At the beginning of this thesis the fundamental terms with respect to the wave polarization including the description of the polarization devices are presented. In conclusion a method for an automated experimental workplace for the measurement of the polarization properties using Poincare sphere and Stokes parameters is designed and verified.

Subject of this master thesis is a flyover bridge over the road II/434 and flood-land. As a load-bearing construction is designed two-beam structure. Traffic loads on this structure are considered according to standard ČSN EN 1991-2. The structure design is based on resultant stressing according to standard ČSN EN 1992-2.

The aim of the Diploma Thesis is elaboration of study of bridge crossing over the Svitava river and ČD railway track in Blansko. It concerns a five-pole steel beam road bridge with through-span which carries road of the third category. The static system of the construction is solved as solid-web beam of 1.3 meters height which is in three middle spans reinforced by truss construction with top chord and system of diagonals without verticals. The height of the main beam where reinforced by trusswork is 4.75 meters. The width of spans in the road axis is 18.5 + 30.525 + 44.4 + 30.525 + 18,5 metres. The bridge deck consists of steel cross beams bonded with reinforced concrete slab of 200 millimeters of thickness. The drive-through width of the roadway is 7.0 meters. The bridge is fitted with right-sided walkway placed on steel cantilevers. The walk-through width of the walkway is 3.0 meters. Material used is S355 Steel, C30/37 Concrete and S460 Steel which is used for marginal spans of the bridge. Load-bearing construction is assessed in compliance with current technical requirements laid down by European Directives, so called “Eurocodes”. The calculation of inner powers is performed using the Scia Engineer 2013.1 software.

The diploma thesis describes the design of curved, pre-stressed concrete bridge over the highway D1. A variant, that is chosen for detail analysis, is a spine girder construction as a continuous beam with 3 spans. The thesis solves the construction to limit states according to applicable European standards (Eurocodes). There are developed clear and detailed drawings and visualization of the bridge.

This document describes the design of the roof structure for the dimensions of the rink. It was designed and evaluated three roofing solutions – steel truss structure, concrete arch with external prestress and prestress truss roof girder with concrete roof panel. One option was selected – prestress truss girder. This variant has been further developed. In the beginning was drafted several proposals geometry respecting the demands on the type of construction. Within the static calculation was created a mathematical model of the structure of the program Scia Engineer. Using this model were obtained values needed for the assessment of individual elements of construction and design assessment as a whole for the ultimate limit state and usability. According to the proposed geometry and opinions parts of the structure was drawing documentation structure as a whole and individual parts of the structure solved in this thesis. The last proposal was visualized structures together with the phases of the construction by program ArchiCAD and rendered by program Artlantis.

This thesis is divided into three main parts dealing with ion beam assisted deposition. In the first part there is a brief description of the IBAD chamber at Institute of Physical Engineering of BUT. There is also a detailed description of control of the IBAD apparatus during deposition. Next part deals with measuring of deposition rates of ion sputtering in order to refine deposition of thin layers. Last part deals with planned and already finished changes that should improve quality and speed of thin layers deposition. Changes include the option of covering the substrate holder, change of the entry flange, design of new insertion chamber with multifunctional substrate holder and the option to control the deposition by computer.

Applycation of laser beam technology to technological process. The kinds of laser dividing, its safety and arrangement. Technology-economical advantage in production of aluminium table. Description of laser machine and workshop and whole company.

This thesis deals with product design rotating camera crane with variable length telescopic arm. Proposed maximum arm length is 6 [m] with a maximum weight capacity of the camera 8 [kg]. The work deals with the various structural units associated mainly with the issue of the telescopic arm. In individual sections detail the construction of the camera head developed deformation and stress analysis of a telescopic jib.