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Modern LED luminaire concept for road lighting
Krejčí, Miroslav ; Kovářová, Klára (referee) ; Novotný, Jan (advisor)
This thesis deals with design of optical system for road lighting luminaire. In the beginning the basic photometric quantities and assessment methodology for requirements of lighting class M are described. The next step is the programming of algorithm which evaluates the road lighting requirements using few boundary conditions. The input of the algorithm is also luminous intensity (power emitted in a particular direction). By the turning the algorithm over, it is possible to evaluate the luminous intensity from the road lighting requirements. Those luminous intensities are used in the process of modification of optical lens. The ray tracing of modified models of lenses was performed to obtain the tables of luminous intensity. The values of luminous intensity are verified in the same algorithm. Finally, the comparison of results was made including several luminaires out there.
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Technology of pouring LED strips with epoxy materials
Rudy, Veronika ; Krejčí, Miroslav (referee) ; Píška, Miroslav (advisor)
The thesis deals with the pouring of epoxy materials over LED strips. The research part contains an introduction to photometry and summarizes the types of potting compounds along with their characteristics. The practical part delves into the effect different amount of pigment has on the photometric properties. This is assessed based on verified measurements performed with the help of a goniophotometer on samples with different amounts of pigment, which were created using an integration sphere. Furthermore, a brightness analysis and a long-term outdoor test were performed.
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Technology of pouring LED strips with epoxy materials
Rudy, Veronika ; Krejčí, Miroslav (referee) ; Píška, Miroslav (advisor)
The thesis deals with the pouring of epoxy materials over LED strips. The research part contains an introduction to photometry and summarizes the types of potting compounds along with their characteristics. The practical part delves into the effect different amount of pigment has on the photometric properties. This is assessed based on verified measurements performed with the help of a goniophotometer on samples with different amounts of pigment, which were created using an integration sphere. Furthermore, a brightness analysis and a long-term outdoor test were performed.
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Modern LED luminaire concept for road lighting
Krejčí, Miroslav ; Kovářová, Klára (referee) ; Novotný, Jan (advisor)
This thesis deals with design of optical system for road lighting luminaire. In the beginning the basic photometric quantities and assessment methodology for requirements of lighting class M are described. The next step is the programming of algorithm which evaluates the road lighting requirements using few boundary conditions. The input of the algorithm is also luminous intensity (power emitted in a particular direction). By the turning the algorithm over, it is possible to evaluate the luminous intensity from the road lighting requirements. Those luminous intensities are used in the process of modification of optical lens. The ray tracing of modified models of lenses was performed to obtain the tables of luminous intensity. The values of luminous intensity are verified in the same algorithm. Finally, the comparison of results was made including several luminaires out there.
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Porovnání metod zjišťování škod černou zvěří na porostech zrnové kukuřice firmy Agroservis Višňové
Krejčí, Miroslav
The first part of the thesis contains a literary review which sums up extracts from books and atricles from Myslivost magazine on the topic of wild boars' population and foraging ecology. Next part is devoted to the work on corn growths where the damage was evaluated. Three methods were used which determine the amount of damage in different ways. Then it was evaluated which of the methods is more accurate and more feasible. In the thesis all the methods are described in detail and evaluated. Moreover the benefits of preventive measures are valorized (growing corn in a certain distance from the wood and sowing a different crop plant around corn fields in order to facilitace shooting of wild boars).
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Etopedic problems of pupils accomodated at the hostel of the apprentice training centre and the solution of them
KREJČÍ, Miroslav
Ever worsening behavior of the young generation in our present-day society is a topic that is very often discussed, both among experts and in mass media. This undergraduate thesis themed ``Etopedical Problems of Pupils Housed in the Boardinghouse of the Training College and Their Solutions`` is addressing this serious social issue as well. Usual mere indiscipline of children and teenagers is long gone. Unsociable and excessive behavior was replaced by manners that are jar against the public morals and by acts that include all types of criminal social conduct. At the same time, the decreasing age limits of the involved is very alarming. The common specificity of the Training College pupils is a light cephalonia. The question is: Are the causes of behavioral disturbances interrelated with the light cephalonia that can be experienced with pupils housed in the boardinghouse of the Training College, or, are there other specific factors, relations and causes behind? My personal experience is that most of the problems of this category in this sphere arise from bad family background. I am convinced that most of the children and teenagers with behavioral disturbances were grown up and educated in a background with family pathology, malfunction, incompleteness and even family absence. This thesis deals with the results of my findings. In the first theoretical part of the thesis, I define boarding schools, adolescence period, specifics of a personality and psychological peculiarities of the Training College pupils, of special education, special pedagogy, with focus on etopedy. The objective of the practical part of the thesis was to discover the presence of behavioral disturbances with the Training College boarders, to determine and classify them and to prove the connection between a behavioral disturbance and a specificity of the Training College boarder. The research in this practical part was conducted in form of interviews (collective questionnaires) with the pupils housed in the boarding Training College, with educational staff of the Training College and the boardinghouse. Based on this research, I arrived at a conclusion, that a proper and correct education in the family, providing the child with harmonious development, is the most significant factor for a trouble free life of a teenager and for minimization of possible behavioral disturbances.
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