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Selected Driving Manoeuvres of Motorcyclists
Kriegsmann, Luděk ; Bradáč, Albert (referee) ; Semela, Marek (advisor)
The entire diploma thesis is designed into two parts. The first part is focused on the theoretical description of the construction of motorcycles. In particular, the theoretical part deals with the description of the types of motorcycles, types of frames, types of suspension and the description of braking systems used on motorcycles. In the theoretical part, the main parameters of the motorcycle are also addressed, which affect the handling and stability of the motorcycle while riding. The last theoretical part deals with the technique of riding a motorcycle. The second part is focused directly on the execution of the experiment. The experiment consists of measuring five disciplines, namely measuring acceleration, measuring braking deceleration using brakes, measuring deceleration by the engine, measuring exit from an intersection and measuring lateral displacement. Eight motorcycles took part in the measurement. The main outputs from the measurements are time data, deceleration and lateral acceleration values.
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Crash-Test Data Analysis - Frontal Impacts
Mikulášková, Lucie ; Ptáček, Petr (referee) ; Bradáč, Albert (advisor)
In this thesis are solved the problematics of crash tests. It is focused primarily on front impacts with full or part overlap. In the introduction are described the best known methods used in forensic - engineering practice for determination of energy equivalent speed (EES). Exactly specified impact tests, which are part of passive safety, are being addressed by several organizations around the world. In the practical part of this diploma thesis are solved four frontal impact tests, which were documented with the participation of the Institute of Forensic Ingeneering BUT in Brno.. These impact tests were performed to capture and analyze the data, resulting in the deformation energy used for permanent damage to the vehicle. Subsequently, the EES parameters were set for each vehicle.
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Comparison of Selected Methods of Valuation of holiday cottages in the Village of Dolany near Olomouc
Škoda, Jakub ; Bradáč, Albert (referee) ; Štola, Josef (advisor)
The diploma thesis is devoted to a comparison of selected methods of the valuation of real estate type holiday cottage in Dolany near Olomouc. In first part is presented the location Dolany, next is presented the basic terms related with real estate valuation and first part will complete description of valuation methods. The practical part will include valuation of five selected holiday cottages. They used valuation methods: comparative method, cost method and direct price comparison. The result will be valorization of appropriateness methods used for different types of valuation and their evaluation with the best method for chosen property type in the locality.
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Influence of fuel additives for passenger cars
Obytová, Eliška ; Bradáč, Albert (referee) ; Bilík, Martin (advisor)
This diploma thesis deals with the addition of automotive fuels and their effects. The aim was to evaluate the function and efficiency of fuel additives present in the fuel at gas stations, and subsequently to improve the fuels accordingly by adding additional individual chemical compounds. The theoretical part explains the concepts, functions and processes related to fuel additives and the basics of tribotechnology. The practical part deals with the process of testing the properties of fuels, their functions, additional additives and its impact for practical use.
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OPTIMIZATION OF ANALYTICAL METHOD FOR CALCULATING THE WEAR OF BUILDINGS
Hlavinková, Vítězslava ; Matějka, Libor (referee) ; Abraham, Karel (referee) ; Bradáč, Albert (advisor)
The dissertation focuses on the problems associated with determining the amount of wear (finding the remaining technical values) that are being addressed. It deals with an overview of the different methods used. The basic premise of the thesis is a comprehensive overview of the calculation procedure and the methods used. This area of wear does not except the price regulation precisely defined procedure, nor are they addressed the circumstances in which that would be the method to be used. Various possible methods or inaccuracies may result in questioning the expert opinions as at trial. In conclusion of this dissertation is shown how the calculation procedure should wear for what purpose should be used and it is also proposed several alternatives.
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The influence of the construction type on the distinction index used for the comparative method of real-estate appraisal
Spousta, Michal ; Mikš, Lubomír (referee) ; Šmahel, Milan (referee) ; Bradáč, Albert (advisor)
Quantification of the influence of type construction is realized for the purpose of determining the market price of flats by using comparative method of valuation. Comparative method is based on the market principle. Comparative method is based directly on a comparison of sales similar properties in similar conditions. Comparing price of comparative properties and appraised property is performed by using a number of criteria of significant differences, the evaluation of these criteria are quantified by using the coefficients of differences. In practice is usual to provide the range and number of coefficients based on professional judgment. The most important coefficients in comparative method of valuation are location, technical characteristics, equipment, accessories, property rights, other relevant factors and mainly the coefficient of influence of type construction is one of the most important factors of pricing. Due to this fact based on the analysis of public available sources (mostly from real estate server www.sreality.cz) is set, how the price is affected by the type of flat construction. During the creation database and it´s layout was found, that one of the pricing factor for the type of structure is insulation, therefore is this factor also considered.
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COMPLEX ANALYSIS OF COMMON OBSERVATION TIME OF MOVING VEHICLE AND ENVIRONMENTAL CONDITIONS FOR EVALUATION OF TRAFFIC SITUATION
Sedlák, Robert ; Rábek, Vlastimil (referee) ; Kropáč, František (referee) ; Bradáč, Albert (advisor)
In the doctoral thesis is derived a theoretical equations for calculating the minimum recognizable change in position of an object by the observer. To assess the suitability of this approach theory tests were carried out on the test track. Tests confirmed the theoretical explanation for three of the five test persons. In the event of a head-on observations were at greater distances longer times of fixation, at the side watching the observation times at short and long distances were without significant differences. Further tests were carried out in urban traffic intersections in day and night time Statistical evaluation was found that if to the intersection did not come any vehicle, the median observation time was 0,4 s (night) and 0,56 s (day), if to the intersection were coming vehicle, the median observation time was 0,74 (night) and 1,06 (day), the median of the check view was 0,12 s for both day and night. There were also statistically evaluated motor skills of turning the driver's head when looking around the intersection. The median time interval rotation of the head from a straight line to the left, straight line to the right and vice versa was 0,36 s, median time period of rotation of the head from left to right and vice versa was 0,56 s.
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Comprehensive System for Road Accident Analysis - Collision Between Vehicle and Motorcycle
Slepánek, Petr ; Kolíbal, Zdeněk (referee) ; Drahotský, Ivo (referee) ; Kropáč, František (referee) ; Bradáč, Albert (advisor)
This dissertation describes the issue of a complex system for analyzing the collision of a motorcycle with another vehicle and suggests a suitable methodology for solving this type of traffic accident. It summarizes the current knowledge in the field of motorcycle accidents withother vehicles, including their statistics and categorization. The author statistically evaluates accidents by their causes and proposes a methodology for solving individual types of motorcycle collisions with vehicles. To supplement and refine the input data for the analysis of road accidents involving motorcycles, a set of author’s own measurements made on different types of motorcycles is included. The thesis contains measurements of their acceleration, deceleration and avoidance maneuvers. Other actual contributions of the thesis are represented also by flowcharts, offering a comprehensive approach to solving individual types of colissions of motorcycles with other vehicles.
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