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Effect of breeding fidelity on reproductive sukccess of diving ducks
Kejzlarová, Tereza ; Musil, Petr (advisor) ; Hořák, David (referee)
Breeding site fidelity and its effect on reproductive success was investigated in two diving ducks species, i.e. Common Pochard (Aythya ferina) and Tufted Duck (Aythya fuligula) in the Trebon region and the surroundings using caught and individually marked females, searching for nests, and monitoring of marked individuals and its broods. In both studied species, the fidelity ratio (apparent survival, MARK software) was around 65 %. Evaluating the influencing factors, impact of previous reproductive success in the phase of rearing ducklings was found to be the only one statistically significant factor. Furthermore, we compared reproductive parameters (i.e clutch size, laying date, reproductive success) in the first and subsequent year of study. The statistically significant relationship was found between the timing of nesting in the first and in any subsequent year in the Tufted Duck . When comparing the reproductive success in relation to hatched or unhatched clutches and reared or not reared ducklings, we do not confirm any significant shift. Successful females were not able to improve or even repeat their reproductive success in the following years, which could result in subsequent lower degree of fidelity. Subsequently, there is a female dispersion and reduction of the reproductive success of...
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Ecology and population development of the Eurasian crane (Grus grus) in Czech Republic
Ticháčková, Markéta ; Musil, Petr (advisor) ; Sedláček, Ondřej (referee)
TICHÁČKOVÁ M. 2013: Ecology and population development of the Eurasian crane (Grus grus) in Czech Republic MSc thesis. Faculty of Science, Charles University, Prague. Eurasian crane (Grus grus) had been exterminated in Czech Republic in past, he started to return back in 70's of the 20th century. There were 1697 observations published between 1965 and 2012, since then is the number still increasing. The annual observations have been done regularly since 1975. The area of occurrence in Czech Republic gradually grows, cranes was recorded in 289 squares. In areas where the cranes were observed on ground, dominates presence of fields and water with smaller presence of forests and pastures. They were mostly observed during the spring months - March and April, and during the autumn months - October and November. Even larger flocks of cranes can be seen in this time. Since 1989 (the first nest) is the number of breeding pairs of cranes in Czech Republic increasing. They spread more to the areas to the southeast direction. The nesting was registered in 37 localities in 26 mapping squares in total, with higher proportion of pastures and meadows. Most of nests are located in reed and tall sedge beds around ponds, other types of environment are used first after 2005. Keywords: Eurasian crane (Grus grus),...
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Network Traffic Evaluation Of Microwave Point-To-Point Link Precipitation Predictions
Musil, Petr
Precipitation prediction derived from attenuation of microwave signal by absorption andscattering of raindrops becomes modern supplementary data input for complex weather predictions.This paper deals with the topic of estimation of data volumes incorporated in the process of dataacquisition. Description of network management protocols and its communication with the evaluationof minimum and full data acquisition scenarios is also included. The main goal of this article is todiscuss issues related to data acquisition over network, data traffic volumes and storage concerns ofthe precipitation prediction methods. The conclusion reveals limitations and trade-offs of the process.
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Comparison Of Power Quality Monitor Data Transmission Between Modbus Tcp/Ip And Iec 60870-5-104
Musil, Petr
With deployment of smart devices along the electrical grid key infrastructure points, communication process with regards to its volume and load on communication infrastructure needs to be described and evaluated. This article focuses on protocol Modbus TCP/IP and standard IEC 60870- 5-104 with regard to their communication structure and principles within substation connected to network by broadband over power lines modems (BPL). This paper also offers two communication scenarios over BPL network by using real substation power quality monitor. Furthermore, performance of each solution is being summed up in the discussion. Conclusion offers a convenient solution for utilization of key values transmission on limited communication channel.
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Envirnomental impact of household consumption
Mach, Radomír ; Ščasný, Milan (advisor) ; Šauer, Petr (referee) ; Musil, Petr (referee)
The main goal of this dissertation thesis is to quantify the environmental burden associated with household consumption in the Czech Republic. Emissions of three groups of gases were selected to express the burden on the environment, namely emissions causing climate change, acidification and the formation of photosmog. These emissions arise from the consumption of fuels in households, and they are usually referred to as direct household emissions. Or they arise in the production and distribution of goods and services, and they are usually referred to as indirect household emissions. Although indirect emissions come from combustion in energy production and other industrial processes and agricultural activities, not from households, they are a consequence of household demand for final products. Therefore, such emissions are considered to be a consequence of household consumption. The resulting emission values are given for the average household and households divided into expenditure deciles. Emissions increase with expenditure per household member in total consumption and in individual consumption groups across all deciles. In the case of climate change-related emissions, more than half come from heating (41%) and electricity (21%). For acidification, heating (31%) and food (24%) are the dominant...
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Improving Accuracy of Detection and Recognition of Traffic Signs with GANs
Glos, Michal ; Musil, Petr (referee) ; Smrž, Pavel (advisor)
The goal of this thesis was to extend a dataset for traffic sign detection. The solution was based on generative neural networks PatchGAN and Wasserstein GAN of combined DenseNet and U-Net architecture. Those models were designed to synthesize real looking traffic signs from images of their norms. Model for object detection SSD, trained on synthetic data only, achieved mean average precision of 59.6 %, which is an improvement of 9.4 % over the model trained on the original data. SSD model trained on synthetic and original data combined achieved mean average precision of 80.1 %.
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Management of the energy transmission system polygon
Bohačík, Antonín ; Musil, Petr (referee) ; Blažek, Petr (advisor)
The diploma thesis is focused on the creation of a control interface for a polygon simulating the electrical distribution network of the Czech Republic, where communication between substations is realized by IEC 60870-5-104 protocol. The theoretical part of the thesis explains the basic principles, properties and possibilities of communication standards IEC 60870 and IEC 61850. The next part is focused on the actual implementation and subsequent implementation of the control interface, including the implementation of the IEC 61850-80-1 module for data transfer between the mentioned standards. The last part describes the created behavior scenarios or the analysis of communication itself.
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Smart Metering demonstration demo
Gregor, Filip ; Musil, Petr (referee) ; Mlýnek, Petr (advisor)
The thesis deals with PLC technology and issues with Smart Metering. In the theoretical part, a principle of technology's functionality and its advantages and disadvantages were described. In the experimental part methodology of data concentrator and electric meters was designed. In addition, extensive testing set according to capturing of DLMS communication, link quality influencing, reading registers of meters were realized. In the second experimental part limits of communications between broadband BPL modems were detected by the power line communication hardware channel emulator. Measurement of throughput, latency, frame loss passed off according to RCF 2544, RFC 6349 recommendation and according to the methodology of TCP Throughput In the last part, two laboratory exercises were created, first one deals with Smart Metering system and communication between the data concentrator and electric meters and the second one deals with communication among broadband BPL modems not only for Smart Metering purposes.
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Software for control and management of home automation
Michálek, Jakub ; Blažek, Petr (referee) ; Musil, Petr (advisor)
This master thesis describes the development of an application for control and management of smart sockets at home. The first part describes the software that was used in creating this application. Specifically, the Qt application platform and the SQLite relational database system. The second part describes the structure and function of this application. The next part describes the application used to test the functionality of the created application and the designed communication protocol. The last part of the work describes the testing and evaluation of the created application.
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