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Exploring consumers’ perceptions of online purchase decision factors: electroencephalography and eye-tracking evidence
Full text linkIntroduction: Consumer behavior on the Internet is influenced by factors that can affect consumers' perceptions and attention to products. Understanding these processes at the neurobiological level can help to understand consumers' implicit responses to marketing stimuli. The objective of this study is to use electroencephalography (EEG) to investigate the differential effects of selected online purchase decision factors that are becoming increasingly important in online shopping. Methods: Using event-related potentials (ERPs) and simultaneous eye-tracking measurements, we identified differences in the perception of utilitarian and hedonic products when the products are exposed together with visual elements of the factors review, discount, and quantity discount. The ERP analysis focused on the P200 and late positive potential components (LPP). Results: By allowing free-viewing of stimuli during measurement, early automatic and later more complex attentional affective responses could be observed. The results suggest that the review and discount factors are processed faster than the product itself. However, the eye-tracking data indicate that the brain processes the factor without looking at it directly, i.e., from a peripheral view. Discussion: The study also demonstrates the possibilities of using new objective methods based on neurobiology and how they can be applied, especially in areas where the use of neuroscience is still rare, yet so much needed to objectify consumers' knowledge of their need satisfaction behavior.O
Effect of fiber treatment on physical and mechanical properties of natural fiber-reinforced composites: A review
Full text linkDue to environmental and financial concerns, there is a growing demand for composite materials in a wide range of industries, including construction and automotive industries. In 2020, the market for wood plastic composites was estimated to be worth 12.6 billion, with a compound annual growth rate of 8.9% between 2021 and 2030. The fundamental disadvantage of reinforced composites by natural fibers is the different nature of the hydrophilic lignocellulosic and the hydrophobic thermoplastic polymers, although natural fibers would lower total costs. These composites typically fail mechanically as a result of fiber debonding, breaking, and pull-out. In a fiber-reinforced composite, the matrix's function could be described as distributing the force to the added fibers using interfacial shear stresses. A strong connection between the polymeric matrix and the fibers is necessary for this procedure. Weak adhesion at the interface prevents the composite from being used to its maximum potential and leaves it open to attacks from the environment that could damage it and shorten its lifespan. Poor mechanical performance is caused by insufficient adhesion between hydrophobic polymers and hydrophilic fibers in natural fiber-reinforced polymer composites. Consequently, during the past 20 years, a variety of chemical, thermal, and physical methods have been employed to address these issues. These methods largely concentrated on the grafting of chemical groups that could enhance the interfacial contacts between the matrix and natural fibers. This review article aimed to give information on several types of fiber treatments and natural fiber-treated composites with a specific focus on their physical and mechanical properties.O
Role of invasive carnivores (Procyon lotor and Nyctereutes procyonoides) in epidemiology of vector-borne pathogens: molecular survey from the Czech Republic
Full text linkBackground: Vector-borne pathogens (VBPs) are a major threat to humans, livestock and companion animals worldwide. The combined effect of climatic, socioeconomic and host composition changes favours the spread of the vectors, together with the expansion of invasive carnivores contributing to the spread of the pathogens. In Europe, the most widespread invasive species of carnivores are raccoons (Procyon lotor) and raccoon dogs (Nyctereutes procyonoides). This study focused on the detection of four major groups of VBPs namely Babesia, Hepatozoon, Anaplasma phagocytophilum and Bartonella in invasive and native carnivores in the Czech Republic, with the emphasis on the role of invasive carnivores in the eco-epidemiology of said VBPs. Methods: Spleen samples of 84 carnivores of eight species (Canis aureus, Canis lupus, Lynx lynx, P. lotor, Martes foina, Lutra lutra, Mustela erminea and N. procyonoides) were screened by combined nested PCR and sequencing for the above-mentioned VBPs targeting 18S rRNA and cytB in hemoprotozoa, groEL in A. phagocytophilum, and using multilocus genotyping in Bartonella spp. The species determination is supported by phylogenetic analysis inferred by the maximum likelihood method. Results: Out of 84 samples, 44% tested positive for at least one pathogen. Five different species of VBPs were detected in P. lotor, namely Bartonella canis, Hepatozoon canis, Hepatozoon martis, A. phagocytophilum and Bartonella sp. related to Bartonella washoensis. All C. lupus tested positive for H. canis and one for B. canis. Three VBPs (Hepatozoon silvestris, A. phagocytophilum and Bartonella taylorii) were detected in L. lynx for the first time. Babesia vulpes and yet undescribed species of Babesia, not previously detected in Europe, were found in N. procyonoides. Conclusions: Wild carnivores in the Czech Republic are hosts of several VBPs with potential veterinary and public health risks. Among the studied carnivore species, the invasive raccoon is the most competent host. Raccoons are the only species in our study where all the major groups of studied pathogens were detected. None of the detected pathogen species were previously detected in these carnivores in North America, suggesting that raccoons adapted to local VBPs rather than introduced new ones. Babesia vulpes and one new, probably imported species of Babesia, were found in raccoon dogs.O
Monitoring of eating and rumination time by young fattening bulls and relationship to meat yield
Full text linkThe aim of this study was to evaluate the length of eating and rumination time in young fattening bulls of different ages and also to evaluate the relationship of these parameters to the meat yield of these bulls. Monitoring was carried out on Czech Fleckvieh-Simmental bull breed. In the case of bulls, the length of eating time increases statistically from 117.62 minutes per day at 2 months of age to 314.93 minutes per day and also the length of rumination from 308.56 minutes to 515.88 minutes per day. The rumination time had an apperently positive effect on the classification of bulls according to carcass classification (SEUROP, P < 0.05) when bulls classified in the fleshiness class U achieved a longer rumination time during monitoring (439.48 minutes) compared to bulls who were classified in the fleshiness class R (419.43 minutes). In the case of eating time, there was an opposite trend, when bulls with a shorter eating time (212.10 minutes) were included in class U compared to class R (241.31 minutes), (P < 0.05). There is a positive relationship between the length of rumination and the net weight gain.O
The effect of form and method of flavoring on microbiota of olive oil
Full text linkFlavoring olive oil is an increasing trend in olive oil processing. Growing consumer interest in flavored olive oils by natural material brings the need to evaluate the key limiting factors which is its microbiological stability. The present research compares the microbiological quality of olive oil flavored by 3 flavors (rosemary, garlic, and lemon), prepared by 3 methods to determine changes during storage. The comprehensive microbiological analyses (total number of microorganisms [TCM], anaerobic sporulates, yeasts, molds, bacteria of the family Enterobacteriaceae, bacteria of the genus Salmonella spp., Clostridium botulinum, and lactic acid bacteria) were conducted during 12 months of storage. The best results in TCM were observed in the oil flavored by fresh garlic (0.24 log CFU/mL). The highest counts of anaerobic sporulates were detected in the dried rosemary olive oil (1.10 log CFU/mL). The flavoring materials have significantly higher counts of microorganism than flavored oils (p < .05). The obtained results demonstrated that microorganisms are capable to survive in flavored olive oil and the method of flavoring can affect their growth in a selective way according to the chemical characteristics.O
Professional development of public university staff - competences, preferences, motivation and barriers
No full textContinuous education, development and learning of staff should be considered in every institution and organization as a natural (often reciprocal) investment that will bring competitive advantages in the future. Institutional support for staff learning in the human resources development model, ideally in the modification of management by competencies, is also a necessary prerequisite for the functioning of organizations in the field of higher education. From a general point of view, it is important to pay attention to the professional, expert and personal development of all human resources within the entire university. Not only academic, scientific-research, but also technical and economic professions and activities are important for the functioning of the university, and therefore it is appropriate to adequately support all job positions. Among other things, it is appropriate to implement these issues in the development plans and activities of employees, or to value them within the framework of human resources management. The aim of the paper is to present partial results of a survey focused on the analysis of educational needs among employees of a selected public university in the Czech Republic.Published Versio
Can repellent crops reduce the abundance of the common vole (Microtus arvalis) as a way to reduce crop damage?
Full text linkThe common vole is one of the most damaging rodents in agriculture. A number of methods are used to suppress its numbers and limit damage. One option is growing crops that are not suitable for voles; this might limit their numbers and distribution. Through long-term monitoring of common voles throughout the Czech Republic, their abundance in eleven crop types (annual, biennial and perennial crops) was evaluated through active burrow counts. Reference crops were selected from perennials and biennials and annual crops were selected as potential repellents. The perennial crops were clover with alfalfa, which serve as the primary habitat for voles. These crops are where voles are found in their highest densities, and from which they spread to the surrounding crops during periods of high abundance. The biennial winter rape was selected because it provides favourable conditions for voles to overwinter and multiply rapidly in the spring. Compared to perennial crops and winter rape, significantly lower numbers of voles were found in onions, poppy seeds and maize. Additionally, fewer voles were also found in mustard compared to perennial crops. Onion and poppy were the only crops to show a significantly lower abundance of voles in comparison to wheat. The annual crops tested are unattractive to voles and due to the cultivation practices used, they do not even have enough weeds as food. As profitable crops they can be cultivated over sufficiently large areas to potentially prevent the spread of voles to surrounding crops, especially during outbreak years.Preprin
Influence of 'Candidatus Phytoplasma prunorum' on primary and secondary metabolites of apricots
Full text link'Candidatus Phytoplasma prunorum' ('Ca. P. prunorum') is a causative agent of European stone fruit yellows (ESFY), an economically important decline disease of some stone fruit species (Prunus spp.). The present research focused on the influence of 'Ca. P. prunorum' on primary and secondary metabolites in four apricot genotypes consisting of older trees (genotypes Nora, LEM 159, group 1) and younger trees (genotypes H 74 and H 177, group 2). The content of sugars (glucose, sucrose, fructose and sorbitol), total phenolic content (TPC), total flavonoid content (TFC), antioxidant capacity (AC), total soluble proteins (TSPC), mineral ions: potassium (K+), sodium (Na+), magnesium (Mg2+) and calcium (Ca2+), pigments: chlorophyll a, b and carotenoids, and indolic compounds content (ICC) were analysed in two time periods during the year in the leaves of tested trees. The results revealed that the presence of phytoplasma/ESFY symptoms significantly decreased the content of pigments in both groups during the summer sampling period. ESFY caused a decrease of TPC, TFC and ICC in the H 177 genotype. The phytoplasma decreased the TSPC and K+ content in older trees during both sampling periods. The only increase caused by phytoplasma infection was observed in glucose content, but only in the group of older plants. The results of this study support the idea that 'Ca. P. prunorum' affects metabolites in plants' defence system and manipulates basic metabolic processes during successful infection.O
Zásady navrhování vodních prvků v městském veřejném prostoru
No full textWhen designing public spaces in large cities, a number of functional, communication, compositional, infrastructural, environmental and compositional factors should be taken into account, most of which relate to water elements. The appropriate location and form of water elements significantly affect the attractiveness and strengthening of the identity of places in cities. Fountains, artificial and natural urbanized watercourses, artistic installations and sculptures, as well as nature-based solutions that utilize water designed in public spaces significantly increase the social and aesthetic value of public spaces. The main aim of the presented research is to present a spectrum of solutions for water elements in public spaces of cities. The summary part describes guidelines and recommendations regarding the principles of designing the locations of fountains, watercourses and artistic objects that utilize water in public spaces in cities.O
LADDER in the Czech environment
No full textProfese učitele je jednou z nejnáchylnějších k syndromu vyhoření. Příčiny můžeme spatřovat nejen v nenaplněných očekávání začínajících učitelů, ale už i v nejasnosti kompetencí, které by učitelé měli mít. Jedním z nástrojů, jak podpořit pedagogy v přípravě či pedagogy obecně, je LADDER ve spojení s metodou individuálního koučování. Příspěvek zasazuje teoretický rámec syndromu vyhoření u pedagogů a popisuje nástroj LADDER, včetně pilotního výzkumu realizovaného na Mendelově univerzitě v Brně metodou akčního výzkumu. Jelikož se jedná o probíhající výzkum, jsou poskytnuty pouze základní předběžné výsledky.The teaching profession is one of the most prone to burnout syndrome. The causes can be seen not only in the unfulfilled expectations of beginning teachers, but also in the lack of clarity about the competencies that teachers should have. One of the tools to support pedagogues in preparation or pedagogues in general is LADDER in connection with the method of individual coaching. The paper establishes the theoretical framework of the burnout syndrome among educators and describes the LADDER tool, including pilot research carried out at the Mendel University in Brno using the action research method. As this is ongoing research, only basic preliminary results are provided.Published Versio