Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2018 (vol. 66), issue 5
Impacts of Intensive Agriculture on Current Rural Landscape - A Case Study for South Moravian Landscape, Czech Republic
Petra Fukalová, Tomáš Mašíček
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1099-1109 | DOI: 10.11118/actaun201866051099 
The landscape in several countries of Central and Eastern Europe went through the most dramatic change in the socialist period. Agricultural land was considered only as a productive area. The size of arable land plots increased and stabilizing elements in the landscape were removed. This land consolidation of agriculture has led to the development of soil erosion. This paper presents a case study focused on comparison of landscape structure of model territory in two periods. The first period shows landscape before collectivization of agriculture, and the second one presents current landscape. The research dealt especially with evaluation of ecological...
Evaluation of Aridity Index in the Czech Republic within 1961-2015
Lenka Hájková, Lenka Bartošová, Věra Kožnarová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1111-1118 | DOI: 10.11118/actaun201866051111
Drought (similarly as flooding) is considerably the gravest agrometeorological extreme connected with climate change and bringing the highest losses in an agricultural production. The objective of this paper is to study the spatial and temporal variability of the Aridity Index (AI) in the Czech Republic, per decade, during the 55-year period (1961-2015). AI is a climatic index, which is important for recording of the drought phenomenon evolution. The climatic data used, include monthly precipitation totals and air temperature from 120 meteorological stations operated by the Czech Hydrometeorological Institute. The potential evapotranspiration was calculated...
Experimental Methodology for Acoustic Diagnostics of Shock Absorbers
Jakub Halama, Milan Klapka, Ivan Mazůrek
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1119-1125 | DOI: 10.11118/actaun201866051119
The application of acoustic measurements brings about a new diagnostic method for evaluating the conditions of shock absorbers. In shock absorber diagnostics, it is advantageous to observe and understand what phenomena occur during the working cycle in the inner tube. Using a non-destructive and non-contact method can avoid dismantling whole device. For the research of this new acoustic method, a classic sound meter, an automotive and a train shock absorber were used. FFT analysis and concurrent filtration were applied for the measurement evaluation of obtained data. It has been proven that applying acoustic methods can lead to diagnostics of aeration...
Raw Cow Milk Thermostability and its Relations to Other Indicators
Oto Hanuš, Eva Samková, Gustav Chládek, Marcela Klimešová, Petr Roubal, Irena Němečková, Radoslava Jedelská, Jaroslav Kopecký
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1127-1134 | DOI: 10.11118/actaun201866051127
The aim was to evaluate the chosen relationships among milk composition, factors of primary milk production and milk thermostability (TES) on large data file during whole season (n 2,829). The results showed the TES mean 20.71 ± 8.19 minutes (geometric mean 19, median 20 minutes), from 3 to 57 minutes. Variation coefficient was 39.6%. The highest monthly mean was in September (23.98 ± 7.97, vx 33.3 % and xg 22.4 min.) and the lowest in January (16.5 ± 7.17, vx 43.5 % and xg 15.1 min.) and monthly mean values fluctuated (P < 0.001) in a relatively broad range of 7.48 minute (36.1 %). Weak positive correlation was found between...
The Effect of Outside Air Temperature on Transportation Temperatures and Processing Quality of Cow's Milk
Vratislav Henzl, Daniel Falta, Stanislav Navrátil, Francois Lategan
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1135-1140 | DOI: 10.11118/actaun201866051135
The objective of this study was to assess the effect of outside air temperature on the transportation temperature and processing quality of cow's milk. The data used in the analyses (208 bulk samples) were collected on four farms over a period of 52 consecutive weeks. The samples were grouped into four outside air temperature-based groups, namely: below 1.0 °C; from 1.1 to 8.0 °C; from 8.1 to 15.0 °C; above 15.1 °C. Mean values of the observed characteristics were as follows: average outside air temperature 7.40 °C, milk temperature on dairy farms 5.19 °C (at collection) and milk temperature on arrival at the dairy factory 5.60 °C. The average duration...
Estimating Crop Yields at the Field Level Using Landsat and MODIS Products
František Jurečka, Vojtěch Lukas, Petr Hlavinka, Daniela Semerádová, Zdeněk Žalud, Miroslav Trnka
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1141-1150 | DOI: 10.11118/actaun201866051141
Remote sensing can be used for yield estimation prior to harvest at the field level to provide helpful information for agricultural decision making. This study was undertaken in Polkovice, located at low elevations in the Czech Republic. From 2014-2016, two datasets of satellite imagery were used: the Moderate Resolution Imaging Spectroradiometer (MODIS) and Landsat 8 datasets. Satellite data were compared with yields and other observations at the level of land blocks. Winter oilseed rape, winter wheat and spring barley yield data, representing the crops planted over the analyzed period, were used for comparison. In 2016, a more detailed analysis was...
Conductivity Measurement for Control of a Biogas Plant
Richard Klein, Vlastimil Slaný, Eva Krčálová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1151-1156 | DOI: 10.11118/actaun201866051151
Nowadays in these modern times, when the majority of technologies are dependent on electrical energy, it is necessary to build new sources of energy ecologically and still improve their efficiency. One of the branches, which can contribute to ecology, is biogas plants. When biogas production methods are properly applied in them, these biogas plants have two advantages. One of them is the disposal of biowaste, the other is the production of green electricity in cogeneration units. In this article, steps which will enable better control of biogas transformations are listed. Therefore, they will contribute to the eco biogas production. The innovative...
Improvement of the Efficiency of Perennial Seed Mixtures Separation on a Drum Vibro Electric Separator
Stepan Kovalyshyn, Oleksanda Kovalyshyn
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1157-1164 | DOI: 10.11118/actaun201866051157
Separation of seed mixtures plays a very important role in obtaining high-quality seeds, which is characterized by the absence of hard-to-separate admixtures of weeds. The aim of the work was to improve the quality of seed mixtures of perennial grasses due to the use of the drum separator in the process of their additional cleaning.The conducted studies determined the basic geometric dimensions of the components of seed mixtures of perennial grasses and their coefficients of friction on various materials. The difference in their values was insignificant, as a result of which it was found that separating by these indicators is inappropriate. We...
The Impact of Under-Vine Management on the Weed Seedbank in the Soil
Lenka Porčová, Vladimír Smutný
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1165-1170 | DOI: 10.11118/actaun201866051165
The evaluation of the weed seedbank in the soil was carried out in 2013 and 2014 in the Žabčice vineyard. Within the frame of maintenance management, three methods of under-vine management were proposed: untreated control, chemical and mechanical method of weed management. 23 plant species were identified in the soil samples from the place below the grapevine. The obtained data were evaluated by the analysis of variance (ANOVA). Seeds of the species Amaranthus sp., Chenopodium album, Stellaria media, and Portulaca oleracea were the most common in all variants. Soil samples from the variant of mechanical weed management were...
Principles of the French Garden in the Czech Garden Design
Anna Magni
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1171-1181 | DOI: 10.11118/actaun201866051171
The French garden of the 17th and 18th century as the ultimate artistic expression of ideas about the world order and the representation of power and knowledge was not limited to its country of origin - its influence spread and appeared all over Europe. The following text focuses on its reflection in the territory of the Czech Republic and follows the ways the main principles of this form of garden design took. Besides the traditionally dominant artistic influence of Italy, the French art was reflected only gradually, and above all, indirectly. Activities of Le Nôtre's disciples have been proven, but without any more detailed documentation. Moravia...
Effects of Irrigation and Fertigation on Yield and Quality Parameters of 'Gala' and 'Fuji' Apple
Vladimír Mašán, Patrik Burg, Alice Čížková, Jaromír Skoupil, Pavel Zemánek, Vladimir Višacki
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1183-1190 | DOI: 10.11118/actaun201866051183
The climate change and growing production of crops increase the demand for the water and the efficient use of water in agriculture becomes more critical. This experiment presents the results of research in the orchard with different irrigation programs and fertigation on yield and quality parameters of the 'Gala' and 'Fuji' apple tree. Three irrigation programs were applied IR + F - full irrigation with fertigation; IR - full irrigation without fertigation; NON-IR - non-irrigation, only natural precipitations. There were no differences observed among these three irrigation programs for tree diameter, sugar content, starch content and fruits firmness...
Significance of Sexual Reproduction of Phytophthora infestans in the Czech Republic
Jana Mazáková, Miloslav Zouhar, Pavel Ryšánek
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1191-1197 | DOI: 10.11118/actaun201866051191
A total of 187 naturally late blight-diseased potato leaves were sampled from 31 sites and five regions of the Czech Republic during the growing season in 2012-2014 and 2016 and examined microscopically for the ability of Phytophthora infestans to produce oospores in infected leaves under field conditions. Although the occurrence of the A1 and A2 mating types required for sexual reproduction of P. infestans was previously confirmed in the Czech Republic, no oospores were detected in this study. To study the effect of temperature on the survival of oospores produced from crosses of three pairs of P. infestans isolates, oospores...
Influence of L-Carnitine Daily Supplement on Qualitative and Quantitative Ejaculate Indicators in Boars During the Summer Period
Magdalena Přibilová, Pavel Horký, Lenka Urbánková, Pavel Nevrkla, Jiří Skládanka
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1199-1206 | DOI: 10.11118/actaun201866051199
The purpose of the project was to determine impact of added L-carnitine in feed ration on quality of Duroc boar ejaculate during the summer period (June-September). Temperature in the stable achieved up to 29.9 °C. For the experiment was chosen 24 Duroc boars. Boars were divided into 2 groups: The control group of boars (n = 12) was fed by the basic feed mixture only. The experimental group of boars (n = 12) was supplemented by 500 mg of L-carnitine/kg of the feed ration. Ejaculate was collected once a week. Monitored parameters were: volume of ejaculate, concentration of sperm, total sperm count, motility of sperm and percentage of morphologically...
Analysis of the Castle Library as a Source of New Information on the Development of the Landscape Garden in Vlašim
Barbara Ševčíková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1207-1215 | DOI: 10.11118/actaun201866051207
The research presented is concerned with the analysis of the Vlašim castle library aiming to contribute to the knowledge on a significant Czech landscape garden from the second half of the 18th century. Another objective was to verify what information this source can provide for research into the field of architectural and historical development of garden art monuments. The catalogue of the castle library in Vlašim was studied based on four main criteria - date of publishing, author, the topic of the publication together with specific features of the printed edition. With these aspects, the books that could be related to the creation and development...
Analysis of Surface Defects in Composites Using Digital Image Correlation and Acoustic Emission
Jaroslav Začal, Petr Dostál, Jakub Rozlivka, Martin Brabec
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1217-1224 | DOI: 10.11118/actaun201866051217
This work employs the acoustic emission (AE) method for material state monitoring. AE presents a non-destructive evaluation technique, which could be used for detection of microstructural changes in composite material. Work describes the process of acquisition of AE in tensile loading of carbon composite materials. In course of tensile stress, the composite was monitored with optical method, applying principles of digital image correction (DIC). Optical stereovision method enables calculation of field shift and field of proportional deformation at composite surface. The objective is analysis of damage in carbon composite materials and employ the methodology...
Testing Wagner's Law and Keynesian Hypothesis in Selected Post-Soviet Countries
Jeyhun A. Abbasov, Khatai Aliyev
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1227-1237 | DOI: 10.11118/actaun201866051227
The aim of this research is to test Wagner's law and Keynesian hypothesis in 9 Post-Soviet countries - Estonia, Latvia, Lithuania, Uzbekistan, Azerbaijan, Georgia, Kyrgyz Republic, Moldova, and Ukraine. For this purpose, long- and short-run causality between real per capita GDP and real per capita government expenditures are estimated by employing ARDL modelling approach. Estimation results support validity of Wagner's law for Latvia, Lithuania, Uzbekistan, Georgia, Kyrgyz Republic and Ukraine, and validity of Keynesian hypothesis for Estonia, Uzbekistan, Azerbaijan, Kyrgyz Republic, and Moldova in the long-run. Meanwhile, research findings indicate...
Consumers' Decision-Making in Online Grocery Shopping: the Impact of Services Offered and Delivery Conditions
Radka Bauerová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1239-1247 | DOI: 10.11118/actaun201866051239
The growing consumer interest in buying food online has caused that online grocery shopping (OGS) is the current most evolving e-commerce category. Therefore, focus on the factors influencing e-consumer's decision-making is an important key to tailor optimal marketing strategy. OGS is specific due to the food aspects (quality, freshness and durability) as well as to the offered services and delivery conditions of the online purchase process. The aim of the paper is to extend external factors of online consumer decision process and examine the influence of offered services and delivery conditions toward consumer's decision-making in online grocery shopping....
The Effect of Price Increases on Fresh Meat Consumption in Turkey
Bekir Demirtas
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1249-1259 | DOI: 10.11118/actaun201866051249
The rapid increase of the red meat price in Turkey in the recent years negatively affects its consumption. Consumers are seeking to compensate for the need for animal protein with cheaper substitution products. In this study, the effects of consumer attitudes, product prices and some other variables on the factors affecting consumption of fresh red meat are examined. A 58-item questionnaire measuring Behavior and Behavioral Intention was applied to 455 consumers in the Eastern Mediterranean Region of Turkey based on the Theory of Planned Behavior. In the study, participants' consumption of fresh red meat and white meat was examined together. In the...
Fraud Risk Management from the Perspective of CFEBT Risk Triangle of Accounting Errors and Frauds
Zita Drábková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1261-1266 | DOI: 10.11118/actaun201866051261
The objective of the present contribution is to evaluate the risk of the impact of accounting errors and frauds on reported accounting records on the basis of the CFEBT risk triangle of accounting errors and frauds. The analysis is conducted in the framework of a case study that examines a selected accounting unit predominantly operating in trade, with respect to financial statements reported during the years 2011-2015. The evaluation of the risk of impacts of accounting errors and frauds forms a part of one of the three vertices of the CFEBT risk triangle. The contribution presents results of the CFEBT approach at three levels of the M-score and analyses...
Marketing Implications of Framing in the Decision-Making
Peter Gál
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1267-1273 | DOI: 10.11118/actaun201866051267
Framing is a psychological concept closely related with decision-making. It says, that the way the information is served to the recipients, affects their opinion about a certain issue and, consequently, their decisions. Frame presents perception of the reality, since the limits of rationality often don't allow people to capture the reality in its complexity. Framing is manifested in several ways. The first relates to the starting point from which the reality is perceived. This dimension causes that people perceive differently the description of decision options formulated in terms of gains (positive frame) or losses (negative frame). The second dimension...
The Study of the Intersection Between Food Fraud/Adulteration and Authenticity
Aleksandra Kowalska
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1275-1286 | DOI: 10.11118/actaun201866051275
The first purpose of this paper is to collate and conceptualize two problems: food fraud/adulteration and food authenticity. The second aim is to investigate students' understanding of these concepts and their implications for consumers and producers (processors and/or farmers) to include food fraud course in university programme for business majors. In the theoretical part of the paper, the cognitive-critical analysis of the world's literature was applied; the analysis was enriched with instantiations coming from Polish economy, market issues and legislative framework. In the empirical (applicable) part, questionnaire survey was conducted among students...
Active Work Participation of the Czech Elderly
Lea Kubíčková, Vladimír Hajko, Martina Rašticová, Naďa Hazuchová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1287-1293 | DOI: 10.11118/actaun201866051287
Majority of developed countries exhibit changing transition towards older population structure. This explains why nowadays, the so-called active ageing - a policy focus to help people remain in charge of their own lives as they age and to promote their continuing contribution to the economy and society - is so frequently discussed. In the context of active ageing, active work participation of elderly is one of the prospective policy objectives, along with the identification of the motives of elderly to stay on the job market. Existing literature indicates that a large number of factors influence this decision, including income and living conditions,...
Development of a Location-Based Service for a Brno City District
Jaromír Landa, Ivo Pisařovic, Jan Kolomazník, Ondřej Švehla, David Procházka
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1295-1299 | DOI: 10.11118/actaun201866051295
There are many different types of places in any city. These places include playgrounds, dog runs, cultural heritage sites and many more. A city usually wants to provide information about location and equipment of these places. The common way is via a city website. However, nowadays a much more common source of information are mobile applications. This article deals with a development of a mobile application for the Brno-North district of Brno city. The application is designed to inform the citizens of the city district about interesting places in their vicinity. The central element of the application is a map which shows where all the interesting places...
Spatial Data Driven Evaluation of City Locations
Mikuláš Muroň, David Procházka
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1301-1306 | DOI: 10.11118/actaun201866051301
Moving to a new home or setting a new bureau in a new city is always difficult. One does not have knowledge about suitable locations; therefore, people are frequently unpleasantly surprised. High traffic noise, long distance to shops or high criminal activity are just few of many possible disturbing aspects. Certainly, there are many data sources that can help to see some particular aspect of the city life. Nonetheless, it is extremely complex and time-consuming task to browse through large data sets and com-pare provided information. Therefore, we developed a solution that comprises many different data sets that describe the city environment and created...
Smart Displays: Personalisation of Information Panels
Ivo Pisařovic, Tomáš Koubek, Vít Ondroušek, David Procházka
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1307-1314 | DOI: 10.11118/actaun201866051307
Information panels are a common part of university or administrative buildings. We can see large panels with news or social media feeds as well as small displays on conference rooms with information about their occupancy. All these panels usually present general information without any relation to a present audience. Presentation of personalised information for a particular user can be very helpful; however, for such personalisation we must take into account many aspects: identification of users in the display vicinity, sharing of the screen among multiple users etc. This paper is focused on the architecture of such system that allows presenting customised...
Consumption and Offer of Organic Food on the Slovak Market
Kristína Predanocyová, Peter Šedík, Ľubica Kubicová, Elena Horská
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1315-1323 | DOI: 10.11118/actaun201866051315
The growing interest of consumers in the products of organic farming is currently considered as a trend on the food market. The aim of the submitted paper is to characterize organic farming, the production, the offer of organic food in Slovak retails and the position of consumers on the organic food market in Slovakia. For evaluating the situation of organic farming in Slovakia, secondary data from the database of Research Institute of Agricultural and Food Economics and Central Institute of Control and Testing in Bratislava were used. The primary data were obtained through two survey questionnaires. The aim of the first of them was to find out the...
Determinants of Commercial Banks' Profitability. Evidence from Hungary
Isah Serwadda
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1325-1335 | DOI: 10.11118/actaun201866051325
This paper aims to find out whether bank-specific (internal) factors impact on the profitability of commercial banks in Hungary for 16 a year period ranging from 2000-2015. The study employs a sample of twenty-six commercial banks with four hundred sixteen observations. The study employs return on average assets (ROAA) as a proxy for bank profitability, and it also considers bank-specific (internal) factors as independent variables. These include asset quality (non-performing loans), overhead costs, bank size, net interest margin, and liquidity risk plus capital adequacy ratio. The study uses panel regressions, descriptive statistics and correlation...
A Comparative Study of Prudential Regulation on Loan Classification and Provisioning of the South East European Countries
Albulena Shala, Hysen Ismajli, Rezearta Perri
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1337-1346 | DOI: 10.11118/actaun201866051337
This paper has been prepared to describe the regulatory measures regarding Loan classification and provisioning of South East Europe countries like Albania, Bosnia and Herzegovina, Bulgaria, Croatia, Kosovo, Macedonia, Montenegro, Serbia, and Slovenia. A proper loan classification and provisioning system ensures credibility of the financial system that in turn restores trust and confidence in the mind of depositors. Determining what constitutes an adequate level of provisions to absorb credit losses is often subject of debate between banks and supervisors, as changes in provisioning estimate an immediate impact in bank earnings and, eventually, regulatory...
Bankruptcy Prediction of Engineering Companies in the EU Using Classification Methods
Michaela Staňková, David Hampel
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1347-1356 | DOI: 10.11118/actaun201866051347
This article focuses on the problem of binary classification of 902 small- and medium-sized engineering companies active in the EU, together with additional 51 companies which went bankrupt in 2014. For classification purposes, the basic statistical method of logistic regression has been selected, together with a representative of machine learning (support vector machines and classification trees method) to construct models for bankruptcy prediction. Different settings have been tested for each method. Furthermore, the models were estimated based on complete data and also using identified artificial factors. To evaluate the quality of prediction we...
Measuring the Performance of Leveraged and Non-Leveraged ETF's
Martin Širůček, Václav Ruml, Petr Strejček
Acta Univ. Agric. Silvic. Mendelianae Brun. 2018, 66(5), 1357-1367 | DOI: 10.11118/actaun201866051357
This paper deals with exchange traded funds (ETFs) and valuation it's performance according to selected indicators. For empirical analysis 10 leveraged and non-leveraged ETFs listed on US market is chosen according to selected criterias (adequate history at least 7 years, daily presented NAV, accessibility for retail investor). Observed time period was 2010-2015 and selected investment horizon is 1, 3 and 6 years. Funds are analyzed on the basis of NAV in the terms of return and risk represented by selected indicators (like Sharpe ratio, Traynor ratio, Information ratio, Apparaisal ratio and indicators like alfa (Jensen Alfa) and beta. Results are...