Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2016 (vol. 64), issue 2
Damage of the Remaining Stands Caused by Various Types of Logging Technology
Michal Allman, Zuzana Allmanová, Martin Jankovský, Michal Ferenčík, Valéria Messingerová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 379-385 | DOI: 10.11118/actaun201664020379 
Forest harvesting causes a lot of damage, which results in damage of the remaining stand. These damages have different character. Their origin, range, and type is affected by the type of machinery, harvesting technology and the machine operator. This paper was focused on the negative impact of three types of forest harvesting technologies to the remaining stand. We considered wheeled skidder technology, and CTL technology with wheeled and tracked chassis. The harvest in stands varied between 21 and 52%, with an average concentration of felling 13.7-95.4 m3 per one skid trail. We observed that the damage rate in stands processed by CTL technology...
Dynamics of Selected Bioactive Substances Changes in Cucurbita Moschata Duch. Ex Poir. After Storage and Different Methods of Technological Processing
Alena Andrejiová, Alžbeta Hegedűsová, Miroslav Šlosár, Silvia Barátová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 387-393 | DOI: 10.11118/actaun201664020387
The winter squash is an important source of antioxidants, especially carotenoids. The aim of submitted research work was to determine the effect of genotype, storage and different methods of technological processing (baking, boiling and sterilization) on the content of ascorbic acid and total carotenoids in fruits of winter squash (Cucurbita moschata Duch. ex Poir.). The small-plot field experiment was established at Slovak University of Agriculture in Nitra in 2013. Five cultivars of winter squash ('Liscia', 'Orange', 'Hannah', 'UG 205 F1' and 'Waltham') were examined in experiment. The total carotenoids content in the pulp of fresh fruits...
Effect of LDL Addition Into Selected Bull Sperm Diluters on Resistance of Spermatozoa Against Cold Shock
Jan Beran, Ondřej Šimoník, Radko Rajmon, Luděk Stádník, Martina Doležalová, Adéla Krejcárková, Jaromír Ducháček, Jiří Šichtař
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 395-399 | DOI: 10.11118/actaun201664020395
The aim of work was to determine the effect of LDL cholesterol addition into selected diluters on the resistance of spermatozoa against cold shock and on their short-term survivability during cold test. The hypothesis was that the addition of LDL cholesterol will positively affects sperm resistance to cold shock and ensures a higher survivability of spermatozoa during short-term cold survival test. Four bulls of different breeds and ages, from the same sire insemination center were used. A total of eight semen collections were processed. Each ejaculate was divided into 6 portions (3 controls and 3 samples). Three commercially produced diluters, AndroMed®,...
Floristic Survey of Summer Aspect in Chosen China Clay Pits in Western Bohemia
Kamila Botková, Jana Kůrová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 401-410 | DOI: 10.11118/actaun201664020401
Five different china clay pits in the western part of the Czech Republic were explored and plant species were determined. These chosen pits were: Hájek-western part, Chlumčany, Horní Bříza, Otovice and Podlesí II. China clay pits with active excavation represent a specific environment concerning both physical and chemical characteristics. This article is presenting a list of the higher plants which were found within active excavation or former excavation areas. Species with a protection status according to the Czech legislation are presented in more detail. 189 different species have been found in total, including 2 species from category C4 - potentially...
Superoxide Dismutase in Spring Barley Caryopses
Natálie Březinová Belcredi, Kateřina Vaculová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 411-416 | DOI: 10.11118/actaun201664020411
Superoxide dismutase (SOD) activity was determined in caryopses of spring barley grown in field trials in 2004-2006. A total set under study included five malting varieties with hulled grain, three waxy hull-less and hulled varieties (of US origin), seven lines formed by crossing of the above given varieties and four hull-less lines of Czech origin. SOD activity was determined by a modified method using a Ransod diagnostic kit (RANDOX). The method employs xanthine and xanthine oxidase to generate superoxide radicals which react with 2-(4-iodophenyl)-3-(4-nitrophenol)-5-phenyltetrazolium chloride (INT) to form a red formazan dye. Statistically significantly...
The Monitoring of Soil Properties in the Interrow of Vineyards
Juraj Ferianc, Barbora Badalíková, Patrik Burg, Jana Burgová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 417-422 | DOI: 10.11118/actaun201664020417
The paper deals with the problems of evaluating of chosen chemical and physical properties of soil in between vineyards that are managed by various mechanization. Measuring was undertaken in viticulture region of South Moravia, at two experimental sites in Mikulov district. Soil surface between rows of vines is managed by regular cultivation (plow, disc cultivator) to a depth of 30-70 mm in the form of a black fallow. On each of vineyards is used a different type of energy resource to carry out working operations - New Holland TN 75 V, a multifunction carrier PELLENC OPTIMUM. While driving in between vine rows, the two machines in completely different...
Reliability Analysis of Temperature Influence on Stresses in Rigid Pavement Made from Recycled Materials
Aleš Florian, Lenka Ševelová, Jaroslav Žák
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 423-432 | DOI: 10.11118/actaun201664020423
Complex statistical and sensitivity analysis of principal stresses in concrete slabs of the real type of rigid pavement made from recycled materials is performed. The pavement is dominantly loaded by the temperature field acting on the upper and lower surface of concrete slabs. The computational model of the pavement is designed as a spatial (3D) model, is based on a nonlinear variant of the finite element method that respects the structural nonlinearity, enables to model different arrangement of joints, and the entire model can be loaded by thermal load. Four concrete slabs separated by transverse and longitudinal joints and the additional structural...
Influence of Temperature and Storing Time on Selected Red Wine Physical Properties
Peter Hlaváč, Monika Božiková, Zuzana Hlaváčová, Ľubomír Kubík
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 433-439 | DOI: 10.11118/actaun201664020433
Presented article is focused on red wine rheological and thermal properties. Effects of temperature and short term storage on density, rheological parameters and thermal parameters were investigated. First measurement was done at the beginning of storage and then the same sample was measured again after one week of storing. Density was measured by densimeter Mettler Toledo DM 40 at different temperatures. For dynamic viscosity measurement was used rotational viscometer Anton Paar DV-3P. The kinematic viscosity and fluidity were determined according to the definitions. Thermal parameters were measured by instrument Isomet 2104. Temperature dependencies...
The Effect of Varying Speed Release of Nutrients from Fertilizers on Growth-production Process of Turf
Peter Hric, Ján Jančovič, Peter Kovár, Ľuboš Vozár
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 441-447 | DOI: 10.11118/actaun201664020441
The aim of this experiment was to compare the influence of fertilizers with different speed of nutrients release on growth-production indicators of turf under non-irrigated conditions. The experiment was carried in warm and dry conditions in area Nitra (Slovak Republic). In the experiment were followed 5 treatments (1. without fertilization, 2. Nitre with dolomite, Superphosphate, Potassium salt, 3. Turf fertilizer Travcerit®, 4. Slow release fertilizer SRF NPK 14-5-14 (+ 4CaO + 4MgO + 7S), 5. Controlled release fertilizer Duslocote® NPK (S) 13-9-18 (+6S)). The highest gain of height reached variant fertilized by fertilizer SRF NPK 14-5-14...
Risk Assessment of Handling Loads in Production Process
Erika Jankajová, Martin Kotus, Tomáš Holota, Martin Zach
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 449-453 | DOI: 10.11118/actaun201664020449
This paper deals with the evaluation of risks in the production process. The possible hazards were determined in the production of plastic windows and security measures were proposed. The level of risk were evaluated by using the extended point method, where were defined the probability and consequence of events as well as the opinion of the evaluator. The level of the risk is calculated as the multiplication of these three parameters and is classified into categories: Negligible, moderate, precarious, Adverse and unacceptable. The levels of hazard and safety measures are defined for employees for the manual handling of loads. The highest level of...
Effect of Nutrient Supply on Some Selected Parameters of Sweet Pepper (Capsicum annuum L. cv. 'HRF') Transplants
Aleš Jezdinský, Robert Pokluda, Katalin Slezák
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 455-460 | DOI: 10.11118/actaun201664020455
In the trial the effect of nitrogen deficiency and potassium surplus on the dry weight, photosynthetic activity (A), transpiration (E), stomatal conductance (gs) and water use efficiency (WUE) were examined. The macroelement content of aboveground parts were analysed, too. The plants were grown in pots filled by pure Sphagnum peat. The top-dressing started in the 3-leave stage of plants, with different solution (every irrigation): control treatment: 0.28 g N, 0.097 g P (0.22 g P2O5), 0.42 g K (0.50 g K2O) per litre; nitrogen-deficiency: 0.097 g P (0.22 g P2O5), 0.42 g K (0.50 g K2O)...
Genetic Diversity of Populations of Akhal-Teke Horses from the Czech Republic, Russia, Estonia and Switzerland
Iva Jiskrová, Irena Vrtková, Michaela Prausová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 461-466 | DOI: 10.11118/actaun201664020461
Our research objective was to evaluate the genetic parameters in the populations of Akhal-Teke horses in 4 countries: Czech Republic, Russia, Estonia and Switzerland. The experiment involved a total of 325 Akhal-Teke horses; 121 horses came from the Czech Republic, 152 were from Russia, 28 were from Estonia and 24 horses came from Switzerland. For the divided database of micro satellites we evaluated the following parameters: effective number of alleles, frequency of alleles for the groups of horses; the observed heterozygosity (HO); the expected heterozygosity (HE); the inbreeding coefficient (Fis); and the genetic distance....
Safety Audit of Band Saw in Manufacturing Organization
Martin Kotus, Erika Jankajová, Katarína Lestyánszka Škůrková, Darina Matisková, Martin Zach
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 467-471 | DOI: 10.11118/actaun201664020467
This paper deals with the verifying of safety status for a selected device in the manufacturing organization. The safety audit of band saw was realized in the manufacturing process. Safety requirements of the machinery for cutting material are given in the standard STN 20 0723. This standard from the point of view of the work safety defines selected requirements for sawing, cutting compounds and the using of prevention to work with cutting compounds. Among the basic requirements belong material clamping and security services for cut, band saws and jaws wear, as well as the required protective cover. The efficiency of audit in percentage was evaluated...
Experimental Research on Load Capacity, Treatment of Adhesively Bonded Surface and Failure Process of Structural T-joint
Miroslav Müller
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 473-479 | DOI: 10.11118/actaun201664020473
In this paper the mechanical behaviour of structural two-component epoxy adhesives in T-joints is experimentally investigated. The aim of this study is to analyse the impact of the adhesive bonded surface treatment on the maximum force required to cause destruction, i.e. bearing capacity of T-joints bonded with various adhesives. Experimental results showed that the type of the adhesive affected the limit values of a force required for the destruction of the adhesive bond. The effect of the bonded surface treatment was also confirmed. From the results of experiment it was proved on five tested two-component epoxy adhesives that the negative effect...
Analysis of Reproductive Parameters in Sows with Regard to Their Health Status
Pavel Nevrkla, Zdeněk Hadaš, Marie Čechová, Pavel Horký
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 481-486 | DOI: 10.11118/actaun201664020481
The aim of the study was to evaluate selected reproductive parameters in sows. Observed parameters were analysed in two herds with different health status. The experiment involved 160 hybrid sows from the 1st to the 5th litter (80 sows with health status A and 80 sows with health status B). Highly statistically significant differences (P ≤ 0.001) and significant differences (P ≤ 0.05) were found between the two groups in length of gravidity, total numbers of piglets, numbers of live-born piglets, numbers of stillborn piglets, numbers of reared piglets and losses of piglets per litter in favor of group B with declared health...
The Evaluation of Disturbed Grassland After the Ecological Restoration and Phytoremediation in the Low Tatras National Park
Ján Novák, Lýdia Turanová, Ľuboš Vadel
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 487-496 | DOI: 10.11118/actaun201664020487
At present the grasslands in the conservation areas are often degraded folowing the abandonment of the pasture and it is necessary to restore them. The aim of this paper was to evaluate the grasslands after the ecological restoration and phytoremediation by different methods. In 2004 the experiment was established on degraded sites at locality Low Tatras National Park (1 126 m a.s.l.) with three treatments (U - unmanaged control, C - managed by cutting, CS - managed by seeding and cutting). In 2013 on C treatment we noticed the increase of the number of species (threefold), the increase of the coverage of plants (twofold) and also the significant increase...
The use of Regression Triplet in Hydraulic Modelling on the Example of Determination of Overfall Coefficient
Petr Pelikán, Jana Marková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 497-502 | DOI: 10.11118/actaun201664020497
The paper is focused on a hydraulic problem of water overfall on hydrotechnic structures, especially outlets and spillways of water reservoirs. The main parameter of such structures is its discharge capacity depending on overfall coefficient, dimensions of spillway, gravitational constant and height of overflowing water jet. The aim of investigation was the mathematical derivation of formula for calculation of overfall coefficient for sharp-crested spillway from observed data. The problem was solved with the aid of statistical method of nonlinear regression analysis, Gauss-Newton algorithm (nonlinear least squares). The objective of investigation was...
Calibration and its Use in Measuring Fuel Consumption with the CAN-Bus Network
Adam Polcar, Jiří Čupera, Vojtěch Kumbár
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 503-507 | DOI: 10.11118/actaun201664020503
The article deals with the description of calibration and its use in measuring fuel consumption via the CAN-Bus network. The CAN-Bus communication network holds great potential for the area of vehicle testing, since it allows the utilization of internal sensors of the vehicle to monitor its output parameters. In order to ensure proper accuracy of the measurements, however, it is best to perform calibration of the relevant sensors using certified measuring instruments. The main focus of the article is the calibration of the fuel consumption as measured by the CAN-Bus network based on fuel consumption measured by precision mass flow meters. Using the...
Influence of Urea Concentration on Refractive Index of AdBlue Fluid Evaluated by Regression Analysis
Adam Polcar, Jiří Čupera, Vojtěch Kumbár, Petr Dostál, Jiří Votava
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 509-516 | DOI: 10.11118/actaun201664020509
The article deals with the influence urea concentration in the AdBlue fluid on the refractive index. The AdBlue fluid is an aqueous solution of urea and demineralized water. It is used as a reducing agent for SCR (Selective Catalytic Reduction) system. Due to temperature fluctuation of AdBlue during the measurement of refractive index, the multi-dimensional linear regression had to be used to determine the effect of the two factors - concentration and temperature. This article describes in detail the individual steps of the regression model construction done using the so-called regression triplet. The task of this method was to create a regression...
Arthropods on Abandoned Apple Trees: Comparison of Orchard Versus Alley
Václav Psota, Pavla Šťastná
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 517-526 | DOI: 10.11118/actaun201664020517
Occurrence of arthropods on abandoned apple trees was studied in 2010 and 2011. The research was carried out in South Moravia (Czech Republic). Two sites were selected within this area - apple trees (Malus domestica) in an alley along a road and an abandoned apple orchard. At each location, arthropods were collected from 5 separate trees. Deltamethrin was applied into the treetops using a fogger. The killed arthropods were collected 15 minutes after the application. From among the collected data, 48 families were determined in accordance with a generalized linear model with a logarithmic-link function and Poisson distribution. As a result it...
Microbial Diversity of Betula Trees: Pollen, Catkins, Leaves Relatively of Flowering
Tetiana V. Shevtsova, Jana Petrová, Ján Brindza, Kateryna G. Garkava, Miroslava Kačániová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 527-534 | DOI: 10.11118/actaun201664020527
Quantitative microbiological analysis by dilution plating method of pollen and additional male and female catkins, leaves of Betula verrucosa Ehrh. and its two cultivars: 'Purpurea' and 'Youngii' relatively of flowering period of Betula has been realized with the aim to provide new knowledge of the microbiological quality of anemophilous pollen for processing and its further application. Qualitative microbiological analysis with MALDI-TOF MS Biotyper was used in the identification of aerobic, anaerobic mesophilic bacteria and coliforms. Mixed microbiota was determined, consisting of aerobic (4.68-4.89 log cfu/g) and anaerobic...
The Measurement of Acoustic Emission Signals from Stem of Maize Under Controlled Environment
Piyapong Sriwongras, Petr Dostál, Václav Trojan
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 535-541 | DOI: 10.11118/actaun201664020535
The present paper focuses on the acoustic emission (AE) measurement method for monitoring of plant transpiration system. AE signals from stem of investigated maize being under well watered condition throughout experiment is investigated with acoustic emission parameters evaluating unit of XEDO-AE system and environmental parameter sensor of XEDO-IO system (Dakel company, Czech Republic) for estimation of xylem cavitation and embolism occurring on stem of plant. After conducting experiment for 4 days, the experimental results indicated that great amounts of AE signals occurred during the daytime, whereas small amounts of AE signals occurred during the...
The Acoustic Emission for Monitoring the Hardness of the Cold Metal Transfer Weld
Michal Šustr, Petr Dostál, Jaroslav Začal
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 543-547 | DOI: 10.11118/actaun201664020543
The article deals with the quality monitoring of the weld joint Aluzinc surface at the overlap point. The corrosion resistance layer research in the anaerobic fermenter (bioreactor) used to be the article's subject. Moreover, the main purpose is focused on the qualitative modification of the degraded samples properties in the specified bio-environment in the experimental measurements. We used the material hardness decrease in two predetermined areas through the use of acoustic emission method as a key factor.
Evaluation of Indirect Measurement Method of Seasonal Patterns of Leaf Area Index in a High-Density Short Rotation Coppice Culture of Poplar
Abhishek M. Tripathi, Milan Fischer, Matěj Orság, Michal V. Marek, Zdeněk Žalud, Mirek Trnka
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 549-556 | DOI: 10.11118/actaun201664020549
Leaf area index (LAI) is an important determinant of biomass production and yield of short rotation bio-energy plantation. An accurate measurement of LAI is critical for quantifying light interception and penetration within the canopy, and subsequently understanding its influence on the stand carbon and energy balance. The aim of the current study is validation of the Sunscan Plant Canopy Analyzer which serves as an indirect method for the evaluation of the seasonal patterns of LAI, relation between LAI and above ground woody dry biomass and to determine the specific leaf area in short-rotation poplar hybrid clone J-105 (Populus nigra × P....
Efficiency of Tetrameric Short Tandem Repeats in Prestice Black-Pied Pig for Traceability and Parentity Testing
Irena Vrtková, Štěpán Vrtek, Lenka Falková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 557-565 | DOI: 10.11118/actaun201664020557
The main goal of the research was to evaluate suitability of 11 tetrameric STRs (Short Tandem Repeats) marker panel for the Prestice Black-Pied pig (PC) breed as the only genetic resource in the Czech Republic.The analysis was carried out in 522 breeding and slaughter PC individuals. We observed 94 alleles overall across whole 11 STR panel. The observed heterozygosity HO was 0.677, the polymorphism information content (PIC) was in average 0.664 per locus. The probability of identity of two independent samples (PI) using all 11 STR loci was 4.037.10-11 and the probability of identity related individuals (PISibs)...
Design and Testing of Low Cost Chair with Round Mortise and Tenon Joints
Jaroslav Začal, Petr Dostál, Michal Šustr, Ioannis A. Barboutis
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 567-572 | DOI: 10.11118/actaun201664020567
The present paper focuses on construction of school seats for developing countries from locally available resources using the local industry and low-end technology. Aim of the work is experimental assessment of mechanical properties of joints flexion in angular plane. Furthermore work considers assessment of joint firmness and comparison between various joint types. Paper encloses the review of various joint manufacturing designs (tenon and mortise), which were proposed for its suitable mechanical properties and simplicity of manufacturing. Designated joint type is easiest form of joint construction and technologically feasible for chair manufacturing....
Structure Integrity Testing of Mineral Feed by Means of Acoustic Emission
Jaroslav Začal, Petr Dostál, Michal Šustr
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 573-577 | DOI: 10.11118/actaun201664020573
This work deals with specific method of non-destructive testing - Acoustic emission (AE). Theoretical part of article is focused on underlying principle of this method and its applicability. The experimental part is focused on research of pressure resistance in mineral feed using the AE. Mineral feed is condensed cube of rock salt (sodium chloride) with supplementary minerals, which is fed to livestock and game to supply the mineral elements necessary for their health and condition. Using the AE sensor is possible to provide monitoring of internal changes in the material.AE gives the overview of internal changes in material structure. With use...
Wild Boar Impact to the Natural Regeneration of Oak and Acorn Importance in its Diet
Jaroslav Zeman, Jan Hrbek, Jakub Drimaj, Radim Plhal, Jiří Kamler, Zdeněk Adamec, Marta Heroldová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 579-585 | DOI: 10.11118/actaun201664020579
In this study, the impact of wild boar on the natural regeneration of oak and importance of acorns in the wild boar diet were surveyed. The data were collected near Moravian Krumlov (Czech Republic) in three types of oak stands differing in the canopy density: fully-stocked stand (1), open-canopy stand (2) and the forest stand in a conversion to the coppice forest (3). Within each stand 150 m long lines were set out. Seed traps to collect acorn harvest and control plots were installed on these lines. The plots were inspected at weekly intervals. After the end of acorn fall the average amount of fallen acorns was evaluated. The quantity of metabolizable...
Selected Processes in SMEs, Targeting to South Bohemia Region and Trade Sector
Monika Březinová, Jaroslav Vrchota
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 589-594 | DOI: 10.11118/actaun201664020589
Process management plays an important role in making up the competitiveness of small and medium-sized enterprises. This issue is researched in the long term at the Economic University of South Bohemia. The paper presents a comparison of trends in the average level of functioning of core processes (selling, human resources, marketing and finance) in the South Bohemian Region MSP for 3 years in the sector of trade. The first data was obtained under the grant GAJU 068/2010/S in 2010, and the second group of data was obtained from the grant GAJU 039/2013/S and GAJU 079/2013/S in 2013. From all the chosen processes within the research sample, significant...
Political Budget Cycles in the European Union
Jiří Gregor
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 595-601 | DOI: 10.11118/actaun201664020595
This paper provides research on the theme of the political budget cycles. The goal is to find out whether or not the government tries to manipulate the state budget and its components for the purpose of re-election across the countries of the European Union. In order to verify this theory a dynamic panel data model was used. The results were significant, but only if predetermined elections were not counted into the estimations. In that case, the theory of the political budget cycles could be accepted as valid for the EU countries. The main driving force of the political budget cycles across the countries of the European Union is fluctuation of the...
The Empirical Implications of the Zero Lower Bound on the Interest Rate: The Case of the Czech Economy
Miroslav Hloušek
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 603-616 | DOI: 10.11118/actaun201664020603
This paper uses an estimated DSGE model of the Czech economy to study the macroeconomic implications of various shocks when the interest rate is constrained by the zero lower bound. The goal is to identify which shocks represent threats for the economy and how large the distortions are. The results show that four single shocks can take the economy to the zero lower bound, and that of the four, productivity shock in the tradable sector is the most dangerous. The consequences for the behaviour of macroeconomic variables are nontrivial and, quite naturally, increase with the size of the shock and the frequency of occurrence. If the economy is subject...
Shopping Behaviour of Generation Y: A Comparison of Czech Republic and Slovakia
Petra Klapilová Krbová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 617-626 | DOI: 10.11118/actaun201664020617
Study of Generation Y shopping behaviour was conducted in Czech Republic and Slovakia. The main aim was to describe the whole decision making process of this generational cohort. In this paper, only selected features are presented, especially early phases of decision making. For the purposes of the study, people with the year of birth between 1980 and 2000 served as a population. Data were collected by online and written questionnaire during autumn and winter 2014/2015. The sample of 380 respondents was conducted by non-probability sampling technique, more specifically judgemental sampling. Results suggest that Generation Y individuals prefer online...
Prediction of Bankruptcy with SVM Classifiers Among Retail Business Companies in EU
Václav Klepáč, David Hampel
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 627-634 | DOI: 10.11118/actaun201664020627
Article focuses on the prediction of bankruptcy of the 850 medium-sized retail business companies in EU from which 48 companies gone bankrupt in 2014 with respect to lag of the used features. From various types of classification models we chose Support vector machines method with linear, polynomial and radial kernels to acquire best results. Pre-processing is enhanced with filter based feature selection like Gain ratio, Chi-square and Relief algorithm to acquire attributes with the best information value. On this basis we deal with random samples of financial data to measure prediction accuracy with the confusion matrices and area under curve values...
Economic Multipliers and Sectoral Linkages: Ghana and the New Oil Sector
Dennis Nchor, Tomáš Konderla
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 635-642 | DOI: 10.11118/actaun201664020635
The study seeks to assess the structure of the economy of Ghana in terms of changes in the economic structure before and after the production of oil in commercial quantities. This is viewed with regards to economic multipliers, sectoral interdependence and trade concentration. The results show that changes occurred with regards to multipliers and sectoral interdependence. The output multipliers of most sectors have declined. The results also show that the agricultural sector experienced an initial decline in its growth while industry experienced an increase. The performance of the services sector was relatively stable for the period covered by the...
Impact of Activity-Based Costing on Financial Performance in the Czech Republic
Jana Pokorná
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 643-652 | DOI: 10.11118/actaun201664020643
Looking for factors affecting business performance is one of a central concern of business economists for several years. Activity-Based Costing (ABC) is a management tool that provides additional and more accurate information on the costs and company performance, thus contributes to better manager decision making, and thus has potential to affect the financial performance. This paper aims to investigate the link between the use of ABC among corporations in the Czech Republic and improvement in corporate financial performance.The empirical survey was carried out among 548 Czech medium-sized and large companies from various economic sectors. Financial...
The Relationship of Talent Management and Organizational Development with Job Motivation of Employees
Parvaneh Rastgoo
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 653-662 | DOI: 10.11118/actaun201664020653
The present research was aimed to the study the relationship between talent management and organizational development and job motivation of the employees in educational, research, student, and cultural deputies of Bushehr University of medical sciences and health services. The method of this research was practical in terms of objectives, descriptive-correlational in terms of data collection method. The statistical population of the research was the entire employees in educational, research, student, and cultural deputies of Bushehr University of medical sciences and health services (consisted of 301 individuals) among whom 170 individuals were chosen...
Map Analysis of Cultural Heritage Values in Designed Landscapes: A Case Study on Červený Hrádek, Czech Republic
Markéta Šantrůčková, Martin Weber, Eva Sojková, Lucia Bendíková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 663-675 | DOI: 10.11118/actaun201664020663
A repository of cultural history, a landscape documents past civilizations and can be viewed as a specific type of heritage. UNESCO distinguishes three types of cultural landscape, of which a clearly defined landscape designed and created by man is the most easily identifiable. Such a landscape embraces gardens and parklands constructed for aesthetic reasons with monumental buildings and ensembles. Old maps, aerial photographs, and GIS technology enabled us to study historic land cover and to trace its changes up to the present. Designed landscapes are highly valuable, and their identification and protection is an important aspect of cultural monument...
Using the Cluster Analysis and the Principal Component Analysis in Evaluating the Quality of a Destination
Ida Vajčnerová, Jakub Šácha, Kateřina Ryglová, Pavel Žiaran
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 677-682 | DOI: 10.11118/actaun201664020677
The objective of the paper is to explore possibilities of evaluating the quality of a tourist destination by means of the principal components analysis (PCA) and the cluster analysis. In the paper both types of analysis are compared on the basis of the results they provide. The aim is to identify advantage and limits of both methods and provide methodological suggestion for their further use in the tourism research. The analyses is based on the primary data from the customers' satisfaction survey with the key quality factors of a destination. As output of the two statistical methods is creation of groups or cluster of quality factors that are similar...
Modelling Claim Frequency in Vehicle Insurance
Jiří Valecký
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 683-689 | DOI: 10.11118/actaun201664020683
The paper is focused on modelling claim frequency and extends the work of Kafková and Křivánková, 2014 (Kafková, S., Křivánková, L. 2014. Generalized linear models in vehicle insurance. Acta universitatis agriculturae et silviculturae mendelianae brunensis, 62(2): 383-388). We showed that overdispersion, non-linear systematic component and interacted rating factors should be considered when the claim frequency is modelled. We detected overdispersion in the Poisson model and employed the negative-binomial model to show that considering heterogeneity over insurance policies yields better fit of the model. We also analysed the linear effect of...
The Impact of Agricultural Exports on Economic Growth in Nigeria
Nahanga Verter, Věra Bečvářová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 691-700 | DOI: 10.11118/actaun201664020691
Agriculture is the backbone of Nigeria's socioeconomic development. This paper investigates the impact of agricultural exports on economic growth in Nigeria using OLS regression, Granger causality, Impulse Response Function and Variance Decomposition approaches. Both the OLS regression and Granger causality results support the hypothesis that agricultural exports-led economic growth in Nigeria. The results, however, show an inverse relationship between the agricultural degree of openness and economic growth in the country. Impulse Response Function results fluctuate and reveal an upward and downward shocks from agricultural export to economic growth...
Practices of Talent Management in Organisations in the Czech Republic
Lucie Vnoučková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 701-709 | DOI: 10.11118/actaun201664020701
As theory still lacks consistent definition of successful talent management, the praxis is characterized by dissimilar interpretations of the term talent. The lack of integrity of definitions appears to be the reason to analyse talent management practices. The article focuses on consistency of suggested practices in management of organisational strategies. The aim is to reveal current approach of Czech organisations towards talent management practices and to specify the main factors affecting employee development in talent management in the tested organisations. Bivariate and multivariate statistical methods and analyses were used to lower the number...