|
|
Manufacturing of Gearwheels Using Various Technologies
Řezáč, Matěj ; Prokop, Jaroslav (referee) ; Kalivoda, Milan (advisor)
The present bachelor thesis is focused on the production of spur gears. The theoretical part summarizes the information related to toothing, its production and inspection. In the practical part, three technologies of spur gear manufacture are selected the gears are made. Finally the thesis compares the spur gears produced by these technologies geometrically and dimensionally
|
|
|
Parametrizable Music Instrument for Mobile Platforms
Řezáč, Martin ; Mlích, Jozef (referee) ; Černocký, Jan (advisor)
The goal of this thesis is to create an application, which will be primarily used as three-axis parametrizable musical instrument, respectively a modifi ed MIDI controller, suitable for Android devices. Firstly, several products, which are available on the market, are reviewed and the reader is introduced to the problematics of audio synthesis, available technologies and typical Android device potential. The next chapter is dedicated to application design. Few designs are mentioned with focus on the chosen design concept. A part of this chapter is also a speci cation of the original concept, its implementation and advantages/disadvantages. The next part is dedicated to implementation and optiomalization of some of the critical points. Also the tests are evaluated including a survey about application usability. At the end, the whole work is concluded and the further development is outlined.
|
|
|
Draft Optimization of Company Website
Šimák, Roman ; Řezáč, Marek (referee) ; Koch, Miloš (advisor)
Bachelor’s thesis deals with draft optimization of company website according to current trends and demands of our time. The main objective of this thesis was to design optimization of the company website in order to meet visitor’s criteria. Among the sub-objectives of this thesis belongs redesigning of original the website from the view of design and purpose, simultaneously connecting website with business processes and simplifying the obligations of organizers related to realization of competitions.
|
|
| |
|
|
Modern methods of visualization and interpretation of radiation quantities measured by a drone.
ŘEZÁČ, Miroslav
The bachelor thesis focuses on modern methods of visualization and interpretation of radiation quantities measured by a drone. It mainly deals with the measurement of radiation quantities using a drone, their subsequent correct interpretation and subsequent appropriate visualization. In the theoretical part, I conducted a literature search on the state of measurement of radiation quantities in our country and in the world. In the next part, I performed an analysis of the literature in the field of radiation protection with a focus on monitoring radiation quantities using a drone. Here I describe the basic radiation quantities and various possibilities of the interaction of radiation with matter. Furthermore, various types of detectors and detection devices that I used for measurement. At the end of the theoretical part, I focused on drones. It describes basic information about drones, their history, aviation regulations needed for their use. I also described a drone and a system that was used to measure radiation quantities. In the practical part I focus on the experiment with a point emitter, where I apply the knowledge from the theoretical part. I also describe walk-through measurement and measurement of radiation quantities using a drone. The next chapter focused on the interpretation of data and the use of various methods. In the last chapter I describe the possibilities of visualization of measured data, the use of the QGIS program for visualization in map data and other possibilities of data visualization with other tools. In the end, I focused on the overall evaluation of the results examined in the bachelor's thesis and their subsequent application in other measurements.
|
|
|
Impact of endosymbiotic bacteria on the capacity of host spiders (Araneae) to provide ecosystem services
Gloríková, Nela ; Řezáč, Milan (advisor) ; Tropek, Robert (referee)
The impact of the microbial community as well as individual strains of endosymbiotic bacteria on spider hosts has only begun to be increasingly studied in the last 20 years. This is primarily due to new molecular methods and devices, but on the other hand also to a growing desire to unravel the mechanisms behind the ability of spiders to provide ecosystem services. Their unique contribution lies in their high diversity, their generalist hunting strategy, and their efficient long-distance dispersal called ballooning. However, their abilities are possibly affected by the tiny organisms inhabiting their tissues - from the haemolymph to the digestive tract and the reproductive organs. In this work, attention is paid to the aspects that are influenced or manipulated by microbes for the purpose of their own transmission. Studies investigating known reproductive manipulators such as Wobachia, Cardinium or Rickettsia are summarized. The work summarizes recent findings in the areas of the impact of endosymbiotic bacteria on metabolic pathways and nutritional support, but also on behavioral aspects such as predatory/antipredatory behavior, defense against parasitoids or pathogens, and dispersal or avoidance of stress. Information about spiders is also related to knowledge about other invertebrates. Keywords:...
|
|
|
Aphidophagy among polyphagous predators
Valdecká, Miriam ; Řezáč, Milan (advisor) ; Dolejš, Petr (referee)
Aphids are among the most widespread insect pests in agroecosystems. So far, significant attention has been paid to their natural enemies, especially to specialized predators and parasitoids. There is less information about the influence of polyphagous predators, especially spiders and ground beetles. Therefore, the aim of this thesis is to summarize the knowledge about this topic. And focus on the advantages and disadvantages of aphidophagy in polyphagous predators. Key words: Aphid, aphidophagy, polyphagous, spider, carabid, predator
|
|
|
Exponential, logarithmic equations and their system with use of internet
Řezáč, Miroslav ; Robová, Jarmila (advisor) ; Odvárko, Oldřich (referee)
The aim of this diploma thesis is to develop a good teaching tool for study- ing exponential and logarithmic equations at the secondary school. It is not a textbook but an interactive website which contains dynamic elements and tests that can help stu- dents understand this subject matter. The website should mainly serve secondary school students as a supplementary study material. In the first chapter of the work the existing websites devoted to this theme are discussed and evaluated. On the basis of these and other educational sites the autor created a new website.
|
|
|
Dietary specialisation and diversification of the spider genus Dysdera
Řezáč, Milan ; Pekár, Stanislav (advisor) ; Růžička, Vlastimil (referee) ; Rusek, Josef (referee)
Dtet specia|isatlon and ďverslÍlcatlon oftlrc sf,der genrs Dysdara (Araneae: Dysdertdae) Summaryof PhD. thesis Tho main aim of my sfudy is to pr€s€nt now knowledge aboutthe diet specialisation antldiversiÍicationóf ttreipider genusDys&ra. This PhD. lhesis, ďvided in two parts' is tre summaryof Íivepapers. 1. Diet specialisatlon 1.1. Řezíě M., Pekór s. & I'bin Y.: Morphologlcal and behavlourď adapations for onlscophagr lnDysderassden (Araneae: Dysdertnne) [acoeptedby Journal of Zoologfl Very little is known about predators feeding on woodlioe. Spiders of the genus Dyidera (Dysderidae)were long suspeotedto be onisoophagous,but evidenoefor lheir díetspeoialisation hás beenrlaoking. These spidas are chareotorisedby an unusual morphological variability oftheir mouth-parts,partioularly tho ohelioaae, suggosting dietary sfrcialisation któróukazuje na potavní specializaci. Thus, we investigatedthe rebtiónsirip betweenmouthpertmorphology, prey pÍeferenoeand predatorybelraviour of ťrvespecies represerrtingdiffoent chelioenď types. Resulb obtained sugg€st that sfudiedĎysdera spidas diffo in prey specialisetion for woďlioo. The species with unmodified cheliceraereatlity oapturedvarious artkopďs but refused woodlice while speoieswith modified ohetóeraeoapfuredwoodlice' Particularly,Dysdera erythrina ind D....
|
|
| |
guest ::
RSS feed.