No description available.

This Master’s thesis analizes technologies suitable for metropolitan area networks. In this thesis there are mentioned technologies used for wireless transfer with speeds above 1 Gbps. There are described basic features and parameters of microwave radio relay links in 70/80GHz range and free space optic links. These technologies are compared with classic optical networks. Practical part of thesis was focused on development of application which calculates signal attenuation caused by the passage of the atmosphere for both technologies. Results gained from this application are mentioned in this Master’s thesis.

This diploma thesis is focused on corrosion degradation of technical materials used for fire trucks production. It describes what is corrosion, corrosion environment and protection against effects of corrosion. Further, the thesis describes methods of joining materials in the production of fire tank trucks. In the experimental part the thesis deals with the examination of samples during mechanical and corrosion tests with subsequent evaluation. The examined samples are exposed to the effects of salt mist and then subjected to tensile testing. The most suitable method of joining materials for the construction of fire tank trucks is verified here.

This thesis deals with junction points of construction used in transport infrastructure, which are made of FRP composite material. Main focus is on bonded joints. The material and geometrical criteria od FRP material and there influence to junctions are analyzed. In sequential steps the development of the design of joints applicable to reference constructions - pedestrian walkways is documented. There are also presented practical experiences from the tests of joints of overlapped and single-sided joints, as well as experience from the design, production and testing of two types of pedestrian bridges on a real scale. Furthermore, extensive comparison of joints, in particular T-joints with closed profiles for selected types of fasteners, is provided. From a simple connection, screws and rivets or plain bonding to combined joints. These are assessed both in terms of bearing capacity and their deformation behavior. These tests are performed for two material combinations, FRP-FRP and FRP-steel.

This work deals research of the reliability of leed-free solder joints. It summarizes the basic knowledge of lead-free solder alloys, soldering and testing process, the soldered joints. The work is done selecting the most important factors entering into the soldering process. The method of the DOE sought the optimal combination of factors, which would correspond to the highest quality solder joints.

The subject of the diploma thesis is design and structural analysis of the sports hall. The building is located in Pardubice city. The dimensions of a floor plan are 45,5 m x 30,0 m, the height is 13,0 m. There is a sport facilities unit adjusted to the construction. The dimension of such an object is 39,0 m x 10,0 m. The load-bearing structure consists of truss girders, which are pin-supported by fixed columns. The distance between main trusses is 6,5 m. The supporting part of the roof deck consists of solid-purlins. Space stability is ensured by cross bracing and longitudinal bracing. All bars are rolled steel profiles and are designed according to current ČSN EN standards. Steel S355 is used as the construction material. In this work is processed a structural design report of main elements including connections and drawing documentation.

The work concerns in modern surface treatment, such as cold plasma. The main aim of this work was to find out the effect of plasma treatment on the surface of wood applied before glue treatment which is influential in final quality of glueing. The work compares the firmness of glued joint of solid wood-fibre slab -- HDF and locust tree on groups of samples of treated and non-treated surface in different plasma discharges. The first part of the work comprises a summary of knowledge in the plasma field and glueing and it attempts to establish a general overview of present development in research in the field of examined issue. The second part of the work deals with method of performed experiment according to the researched norms. Results of the work have proven that plasma preparatory treatment influences the firmness of glueing and at a certain type of use of plasma discharge we can improve the quality of glued joint.

The aim of diploma thesis is to discover the effect of used glue on strength of Domino structural joint and on the experiment basis determine whether different thermal conditions affect the strength of glued joint and if this influencing is significant or not. Two types of samples were made for this experiment with difference in used glue. These samples were exposed to three different temperatures. Bending moment and rigidity coefficient was identified at particular joints.

The thesis deals with the influence of mixture of the mixed adhesive and dispersion PVAc adhesive for bonding strength in shear strength. For the testing were selected two economically very important wood species (the spruce and beech wood) which are used in construction, furniture and building industry. All samples were grouped by the type of adhesive and by the temperature used for 28 days conditioning. All samples were bonded with coating 120 g/m2. After bonding, pressing and conditioning to required temperature were all samples subjected to a test, which examines the bonding strength in shear. The thesis deals with the comparison of the results and examines the effect of the adhesive mixture to bonding strength.

Public transportation is important for urban development. It Must perform tasks interms of quality. Public transport services influencing many factors quality. For the transport company, it is important to define these factors and then these factors follow. Transport companies define standards of quality, their use offers a quality service that passengers expect. The character of public transportation and primarily functionality and efficiency greatly affect the quality of life of the population, respectively passengers. The goal of this taskis not only to analyze the current situation, but especially to suggest some optimization of the state, in the sense just to meet requirements and expectations of passengers. Finishing this optimization is conditional on economic efficiency, technical conditions and backgrounds, so they were within the proposed optimization takes into account these factors. Overall, in the context of optimizing it is a need to meet very specific groups of passengers, such as the elderly and children, as well as adjust the location and nearby bus stops and accessible by public transportation strategic points in the area (hospitals, schools, shopping centers). The task at least it draws attention to the major shortcomings in this sphere and the goal to propose possible solutions.