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The aim of this diploma thesis is to evaluate fertility indicators and milk production on a selected farm. I have anticipated lower milk utility and less frequent pregnancy rate during summer time in comparison to other seasons. The selected stable in Bílý Újezd is a part of ZEAS Podorlicko a.s. corporation. In this stable the dairy cattle of Holstein breed was studied. The breed was mixed with ayshir and red holstein, not exceeding 15% of blood mixture. Milk utility of 511 milkers was evaluated from October 1, 2013 to October 31, 2015. The data was gained from Milk Profi Data program and then statistically evaluated in SAS version 9.3. The analysis focused on the influence of lactation sequence, year influence, season influence and the influence of lactation period on daily milk production, percentage ingredient volume and the amount of somatic cells in milk. The average count of lactations in a herd was 2.34 in the examined period and the average day of lactation was 169.32. A positive influence of lactation sequence on daily milk production was discovered (r = 0.056; P < 0.001). The highest daily milk production was detected within fourth lactation milkers (30.72 kg). Daily milk production was increasing year-on-year, the highest was in 2015 (32.09 kg). The influence of seasons on daily milk production was noticeable. Milkers had statistically the highest volumes of milk production in autumn (30.32 kg; P < 0.001). The lactation period had a negative influence on daily milk production (r = -0.548; P < 0.001). Till 60th day of lactation the daily volume of milk production was increasing, and then since 61st day till the end of lactation it was decreasing. The days of lactation had positive influence on fat content (r = 0.078; P < 0.001). The influence of lactation sequence on a fat percentage could not be statistically proven. In 2013 the fat content was higher (3.84%) then in 2014 (3.64%). Compared to 2014, the fat content increased on 3.80% in 2015. The lowest fat content in milk was during summer (3.58%). In autumn the fat content reached 3.79% and it was the highest in winter (3.92%). The fat content decreased in spring, falling to 3.75%. A positive influence of lactation period on fat content was proven (r = 0.078; P < 0.001). Any influence of lactation sequence on protein content was not statistically proven. The highest protein content was noted in 2013 (3.58%), then it decreased in 2014 on 3.52% and 3.48% in 2015. The highest protein content was reached in winter (3.62%). The protein content decresed in spring on 3.51% and the lowest level was in summer (3.38%). The protein content increased again in autumn reaching 3.60%. The influence of season was proven to be positive on lactation period and protein content (r = 0.451; P < 0.001). A negative influence of lactation sequence on a lactose content was proven (r = -0.375 ; P < 0,001). A positive infuence in lactose content (r = 0.283; P < 0.001) was discovered throught seasons. The lowest lactose content was measured in winter (4.74%), it rose in spring reaching to 4.79% and in summer to 4.80%. The highest lactose content was in autumn (4.84%). Also a negative influcence of lactation period on lactose content was proven (r = -0.221; P < 0.001). A positive influence of lactation sequence on the amount of somatic cells in ths/mL (r = 0.197; P < 0.001) was discovered. On the contrary the seasons had negative influence on the amount of somatic cells in ths/mL (r = -0.060; P < 0.001). A statistically noticeable difference was revealed between the amount of somatic cells measured in autumn (807.92 ths/mL) and in winter (968.58 ths/mL). The influence of lactation period on the amount of somatic cells was not proven. Altogether 544 milkers were assesed for reproduction capability in the period from October 1, 2012 to October 31, 2015. The data was obtained from WebSkot program and statistically evaluated by SAS program version 9.3. The analysis focused on the influence of lactation sequence, insemination sequence and the month of insemination pregnancy rates, servis period and the interval of insemination. The influence of lactation and the insemination sequence on pregnancy rate could not be proven. The analysis showed that the pregnancy rate was lower in August (23.69%) than in December (46.50%). The influence of insemination on servis period could not be proven. A positive influence of insemination sequence on servis period was discovered (r = 0.802; P < 0.001). The influence of the month of the insemination on servis period was not proven as well. The influence of lactation sequence nor insemination sequence on insemination interval was not proven. It was discovered that the insemination interval was shorter in December (70.01 days) then in July (90.15 days; P < 0.005). Hypothesis, which presupposed lower milk utility in summer in comarison to winter was disproved. Hypothesis about lower pregnacy rates in summer months was proved.

In this diploma thesis an analysis of the reproductive indicators was performed in dairy cows of Holstein cattle and dairy cows of Czech fleckvieh on the four different farms located in the Vysočina region. In the thesis were evaluated average values of reproductive performance – service period, interval, insemination index, interim and pregnancy percentage. All values were compared between individual stock and between breeds. In addition, the success rate of slaughter in individual seasons was evaluated. A total of 772 inseminations were performed at ZOD Habry in the monitored pe-riod, the service period averaged 84.6 days, interval 59.6 days, insemination index 2.04, interim 375 days and 47.3 % pregnancy percentage. The highest pregnancy was in De-cember, January and February, while the lowest was in August, September and October. The second breeding of Czech fleckvieh was KLAS a.s. In this period, 510 inseminations were performed. The pregnancy percentage was 42.1 %, interim 387 days, the insemination index was 2.6, the interval of 63.8 days and the service period was 102.6 days. The lowest pregnancy values were in June, July, August and September. Highest in the months of March, April and October. The third agricultural enterprise was Osiva Přibyslav a.s., which bred Holstein cattle. In the meantime they reached values of 392 days, pregnancy percentage 43.3 %, interval 72.7 days, service period 120.3 days and insemination index 2.44. In total 702 inseminations was performed for the given year and the most pregnant dairy cows were in November, December and October, on the contrary in the summer months. The last breeding company was AGRO Posázaví a.s. breeding Holstein cattle. The lowest values of pregnant dairy cows were in the summer months and the most pregnant dairy cows were in the winter months. Interval values reached 70.3 days, insemination index 3.2, pregnancy percentage 33.8 %, interim 408 days and service period 125.8 days. A total of 1546 inseminations were performed.

Monitoring of the carbon dioxide concentration in the building is carried out for several reasons. One is to ensure hygiene conditions. With the advent of Bluetooth 5.0 came the support of mesh network technology, which is defined by the Bluetooth Mesh standard. By implementing this standard, we can create an extensive network of devices monitoring the concentration of carbon dioxide in the building. Based on the monitored concentration, we can control the air conditioning and ventilation of the spaces, ensuring that the hygiene conditions are met. Thanks to the compatibility of Bluetooth Mesh with Bluetooth Low Energy, it is possible to access individual nodes, e.g. from a mobile phone. The aim of this work is to design and implement a measuring system whose elements will communicate with each other using Bluetooth Mesh wireless technology.

In presented thesis the chosen parameters of reproduction {--} days to first service, days open, calving interval, insemination index - were evaluated in dairy cattle. There were 222 of dairy cows observed (53 Czech Pied and 169 Holstein cows). The results of reproduction were evaluated as unsatisfactory. Length of calving interval overreached recommended 400 days in 56,25 % of Holstein and in 33,33% of Czech Pied cows. Also the mean value of insemination index 2,39 exceeds the optimum of 1,8-2,0.

This diploma thesis is concerned with selecting the appropriate method for determining the moment of inertia to the vertical, lateral and longitudinal axis through the centre of gravity of the vehicle. Using the special mechanical device, constructed on IAE was carried out repeated measurements of known mass properties in each axis. With the aid of obtained data was calculated measurement error. To compare the resulting values was created MBS model.

This diploma thesis deals with measurement of vehicle centre of gravity height position. In the first part is created summary of methods used for measuring centre of gravity position and moment of inertia of the vehicle. In the other parts are designed and analyzed two dynamics method of measuring centre of gravity height position. This thesis presents analysis of the errors of the proposed methods, results of measurements and design of the construct adjustments device for measuring of the moments of inertia enabling its used for measuring centre of gravity height position. Some components are through analyse of tension.

The aim of this thesis is to evaluate chosen influences on the extent of reproduction of randomly chosen milk cows that are bred in the same conditions. The chosen influences such as breed, age of the first calving, time of year of calving and level of yield were observed within breeds of Czech Fleckvieh and Holstein cattle. Evaluation was carried out in ZOD "Podhradí" Choustník company, specifically in Budislav farm. 191 cows were chosen for the basic sample. 95 of them were Holstein cattle and 96 were Czech mottled cattle. Chosen influences were evaluated according to data gained from the set of milk yield inspections. A statistically significant difference was observed between Czech ticks and Holstein cows in the length of service period per second and first lactation where Holstein cows have a second lactation period longer than 44 days (P <0.001). Evaluation of first calving age did not show any influence on the level of reproduction neither within Czech Fleckvieh nor within Holstein cattle. During the annual evaluation, it emerged that Holstein cows calved in spring and winter have significantly bigger insemination interval compared to cows that were calved during summer or autumn. This fact was also proven by correlation analysis. This analysis also confirmed the relation between annual period and insemination interval Rxy=0,21(P<0,05). The correlation analysis also proved the relation between annual period and service period as well as interim of Czech Fleckvieh cattle Rxy= 0,327 (P<0,01). Statistically significant influence was not proven within Holstein cattle. Correlation analysis only pointed out the relation between yield and service period Rxy=0,213 (P<0,05). Unlike Holstein cattle, gradual increase of service period figures and interim depending on yield was noticed. Breeding cows milking more that 7,5 thousand kg of milk per lactation had service period of 132 days (P<0,01) and interim 407 days (P<0,01). Economical losses caused by prolonged interim during monitored herd of cattle reached 400.490 CZK in year of 2016.

This master's thesis deals with problems connected with measuring vehicle centre of gravity height. The research part summarizes generally known methods of measuring vehicle centre of gravity and moments of inertia. Essential part of this thesis is the design of a device for measuring the centre of gravity height of a road vehicle on a principle of measuring a period of oscillation. The height position of the platform of the device is adjustable through hydraulic cylinders. A stress-strain analysis of the design was executed through a combination of analytical methods and a finite element method. The process of measurement was described and an equation for determination of centre of gravity height was deduced. Error of measurement was estimated based on the knowledge of partial errors of measured values.

This diploma thesis deals with the measurement of wind oscillation waves on reservoirs, especially with regard to the determination of wave properties with a focus on the spectral density. The thesis presents the basics of the theory of creation and propagation of wind oscillation waves, the recherche of measuring devices and a description of the pilot measurement with the processing of measured data in the MATLAB environment using the software tool WAFO. Attached to the CD are sample scripts for data processing from the resistance sensor.