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Semiconductor laser driver for 1Gbit/s
Chlachula, Filip ; Křivák, Petr (referee) ; Prokeš, Aleš (advisor)
This master´s thesis deals with a solution of the driving circuits of semiconductor laser. In the beginning of the thesis there is an analysis of semiconductor lasers and its characteristics. Then the principle of laser diodes and its excitation is described. This thesis is focused on semiconductor laser excitation through the use of direct and modulating current. Several circuits are described, designed and simulated. The best resulting circuit is realized and measured in the laboratory.
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Who Was Better? Vettel or Schumacher?
Rusnoková, Lenka ; Melzochová, Jitka (advisor) ; Babin, Jan (referee)
Is Michael Schumacher really the best Formula 1 driver? Are not his outstanding succeses only result of qualities of his racing car? Is there anyone better among Formula 1 drivers? During my research, I apply miscellaneous methods of talent evaluation to dataset of the chosen drivers racing between years 1980 and 2013. The method of explicit talent expression by means of the multiple regression model using fixed effects is one of them. The methodology is based on separation of driver's influence and racing car's effect on the total result of a race recorded by statistics. According to my research, Michael Schumacher is statistically the best driver of my selection, however, Fernando Alonso is the most talented one. Thanks to a posibility to express driver's talent, the efficiency at the labour market of racing drivers rises, which is caused by reduction of costs of the best driver selection for the needs of the team.
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Motivation for management activities
SAMCOVÁ, Eliška
This bachelor thesis is focused on an issues of work motivation of drivers more than 7,5 tuns. The goal of this thesis was to get findings related to work motivation of international and domestic drivers in the selected company. Furthermore, based on findings evaluate investingated allegations and create proposals to improve in the area of motivation in the selected company.
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Criminality in traffic as a part of special section of criminology
RICHTEROVÁ, Michaela
The issue of car accidents associated with committing crime is quite wide and current topic. From this issue results goal of this work, to chart the crime in traffic and in this context to review, if crimes in traffic effected the policemen and the participants of the car accident in their life. The work is divided in two parts the theoretical and the practical. In the theoretical part I focused on what are car accidents, how they are divided and what are their reasons. I was also dealing with how it goes on with search of premises of the car accident and if the traffic participants hold back the accidents and how they do it. The aggressive acting of the drivers is also why the accidents happen so often that is why I deemed necessary to deal with this sphere. I focused on what are the signs and prevention of the aggressive drivers and I also mentioned so much discussed campaign "You don't think - You will pay" (Nemyslíš - zaplatíš). The car accidents have tragic effects, that is why I also referred how it is with casualties and survivors of these car accidents. I also added to my work what are the crimes, their dividing, signs and definition. Many people don't know the difference between crime and penal offence, that is why I thought it will be useful to mention the differences and also the common feature in my work. At last I divided the crime in the most common which appear in traffic frequently and the others which come under traffic however they are not the most frequent. I was also interested what is the procedure on investigation of crime and how proceeds the trial by court. I couldn't leave out what are the punishments and their execution of a punishment in traffic. In the second practical part I have used qualitative analysis. I have collected the information through the use of questioning technique semi-controlled interview. The interviews were implemented with ten communicative partners five of which were the Policemen of the Czech Republic from the car accidents department and the others five communicative partners were traffic participants who took part in a car accident. These two groups of communicative partners I have chosen by method snowball sampling. The questions were divided in three major ranges. The ranges covered car accidents, crime and the mental impact on intervened policeman and the participant after the car accident.For completion of the goal were provided two questions. The first question was investigating what is the most frequent crime in traffic. The second question was addressed to what is the mental impact of the car accidents on intervening policeman and the participant of the accident in their life. The results illustrated that both the groups the policemen of the Czech Republic and the participants of the car accident were in accord with commission of crime in traffic where they indicated as the most frequent crime Threat under the influence of drugs and Bodily harm by negligence. Among the others most frequent crime the policemen introduced Obstructing an officer verdict and the participant of accident Unauthorized use of another's property and Public safety threat. The second investigative question showed that the accidents effected both the groups mentally in connection with commission of a crime in their life. The participants are more worried about their relatives and they are afraid of the roads since they experienced serious accident. Some of them mentioned that they are afraid to be driven by someone else in the car and some of them are afraid of driving because they don't trust themselves. The accidents affect the policemen mentally because they face them and in the place of the accident they recall the tragic scene. Thanks to their profession they are more careful on the roads, they drive carefully because they can see effects which can occur. They are more concern for their relatives since they work as policemen.
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Analysis of the causes of faulty conduct of drivers leading to the accident.
ŠVARC, Petr
This thesis is concentrated on the research of recent state of the czech highways. The main aim of this work is to find out the reason of mistaken behaviour of the drivers in traffic. During analyzing further details I concerned myself on four basic factors: the influence of the environment, the influence of the car, what the man does while he is driving and the influence of the man himself on his operating. This work also includes the research of the driver as an individua together with external environment which affects him during the journey. The analysis of the influence of each factor was marked out as a field research on the way with the driver whereas were emphasised his transgressions, his sanity and the influence of the environment on himself. Especially monitoring which leaded to the observation of activities of the man in following aspects: respecting the speed limit, the traffic signs and other highway codes, mental condition of the driver in critical situations. Also the influence of the environment on the man was an important point in this work. Were chosen three segments which negatively affects the man ? the driver and there were proposed solutions to reduce them. The influence of the driver himself was characterized in following part. The analytic part summarizes obtained information from measuring and from the observation which are specified in the experimental part. In final part of this work are emphased any recommendations for fractional parts of the traffic which should lead to the improvement of the system thereby to the improvement of the recent state of this issue.
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Analysis of the human element in the area of road motor vehicles.
NOVÁKOVÁ, Petra
My dissertation analyzes the frequency of selected violations of the law in the Czech Republic. In the operation of vehicle on roads that are to blame to a greater or lesser extent in the traffic accident. As a separate chapter in the thesis are fundamental concepts and the individual paragraphs, which are analyzed and used. Also you can find statistics that reflect the evolution of the number of accidents and their consequences. Except resources for the next chapter my diploma papers also show results of lighting, using cell phone and seat belts while driving. Another part is the experimental section. Here are details about my own questionnaire and field measurements. They are transformed into the analytical part of the summarization tables. The synthetic part of thesis compares obtained data in the research and the statistical summary. In the last section, which covers general recommendations for practice are set out possible options which could prevent future violations of the law.
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Behaviour of Drivers on the Roads and Efficiency of Preventative Actions Focused on Traffic Participants.
VEČLOVÁ, Jana
The bachelor thesis is focused on troubled behaviour on the roads, or behaviour of drivers on the roads. In the theoretical part, drivers´ behaviour and most frequent offenses are described, as well as other road users. Traffic accidents and their most frequent causes, proved by the statistics of Police of the Czech Republic, are also mentioned in this part. Last but not least, there are the chapters devoted to accidents and inappropriate behaviour prevention. The traffic preventive actions are designated not only for drivers, but also for children, who are road users as well and, sadly, frequent participants in traffic accidents. Thus, in the last chapter I focus on description of traffic education from the perspective of an elementary school experience. In the practical part I asked drivers both about the traffic preventive actions and the traffic situation on the roads from their subjective point of view. To be more specific, I asked about what influences their attention, the way they perceive current situation and whether they would like to change anything or not.
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Analysis of the machinery as a component of the accident system in the area of traffic operations of self-propelled motor vehicles
SLUKA, Jiří
The theme of this student thesis is {\clq}qAnalysis of the machinery as a component of the accident system in the area of traffic operations of self-propelled motor vehicles``. It deals with problems of traffic and main causes of deaths and injuries in road accidents, and proposes a possibility of their elimination. The solution is based on the fact that most of the road accidents are caused by drivers themselves who don´t pay enough attention by driving or their behaviour behind the wheel isn´t sufficient. The proposed solution is supposed to monitor the traffic in real time and in co-operation with specially-designed program installed in the electronic control unit of the vehicle it´s able to notify the driver of dangers around him. The system is also able to dynamically control the traffic in order to prevent traffic-jams, accidents on pedestrian crossings, etc. As a result of system implementation the author estimates rapid decrease in fatal road accidents, serious injuries and physical damages.
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Analysis of the human as an element of accident in the area of motor vehicles.
KUTLÁKOVÁ, Simona
This thesis analyzes the human as an element of accident system in the sphere of motor-vehicle traffic. Then interprets the risks, damages and injuries in this sphere which are caused by the driver. On this basis, the measures to reduce the number of injuries in the Czech Republic are drawn up. In this thesis is taken account of existing measures that were proceeded in this area. It focuses particularly on the subject "driver" and its role in traffic accidents.
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