2957 research outputs found
Sort by
The Influence of the Economic Disparities Between Regions on Political Polarisation in the Czech Republic
Get PDFThis paper aims to evaluate how the economic prosperity of regions affects the polarization of political representation, and thus of society. It examines whether economically prosperous regions, represented by economic well-being, show lower political polarisation, and whether regions with lower levels of economic prosperity are more likely to elect polarised and extreme political representatives. The paper focuses on the period from the establishment of the Czech Republic in 1993, to the last elections in 2021 in the NUTS 3 regions of the Czech Republic. Evidence was provided through a determination of the effect of economic well-being, defined by three indicators, i.e., gross domestic product per capita, unemployment, and disposable income per capita, on the development of a created political polarisation index. This index is based on the left-right ideological party division combined with election results for the Chambers of Deputies of the Parliament of the Czech Republic of regional districts. Sociodemographic indicators of the development of the individual regions were used as control variables. These include the average population, share of the university-educated population, age indicators, population density of a given region, voter turnout in a specific election year, and various positions in the institutional setting of the Czech Republic. The most significant components of economic well-being that influence the development of polarisation are the growth of disposable income and unemployment. This is demonstrated through a quantitative economic analysis of the panel dataset using the least squares with fixed effects method that uses time-fixed and region-fixed effects.O
Forest as a source of renewable material to reduce the environmental impact of buildings
Get PDFConstruction sector has high environmental impact throughout entire life cycle of buildings. One way to reduce the impact is to use building materials with the lowest possible environmental impact - such as wood. The use of wood-based building materials can improve the overall environmental balance of buildings. Compared to other materials, wood probably has the best environmental performance. These findings are particularly significant in the context of the environmental and legislative situation in Europe and the Czech Republic and may be one of the reasons for the increasing number of new wood-based buildings. The main reason for the research is to highlight the potential of wood as an ecological renewable material with multiple applications in all sectors of the national economy, especially in the construction industry. This paper aims to deepen the knowledge of the environmental specifications of building materials, especially wood, highlight its benefits and verify that building with natural and eco-friendly materials is less costly with lower environmental impacts. To illustrate the environmental impact of the construction industry, a case study comparing house variants was conducted to find the most suitable combinations of materials in terms of economic, environmental, and social aspects. It was found that from a sustainable development perspective, building with green materials generally means lower environmental impacts measured by e.g. global warming potential and embodied energy. This is particularly evident in the case of wood, which is not only a renewable material with advantageous thermo-technical and construction properties despite its low weight, but also stores carbon as it grows. The findings show that wood in the structure can reduce the cumulative environmental impact of the whole structure.O
Age Estimation of Dracaena cinnabari Balf. f. on Socotra Island: A Direct Method to Determine Its Lifespan
Get PDFBackground: Dracaena cinnabari is a monocot species that does not form annual tree rings; thus, its age can only be estimated. This species is threatened by low natural regeneration, with an evident absence of younger individuals most likely caused by overgrazing; therefore, knowing trees' ages is important for possible conservation strategies; Methods: Data collection was conducted on the Firmihin Plateau on Socotra Island (Yemen) in 2021, and the diameter at breast height (DBH) of 1077 individuals was measured, the same as those established on monitoring plots 10 years before the current measurement. The 10-year radial stem increment and DBH obtained in 2011 served as a basis for the linear model from which the equations for the age calculation were derived. Results and Conclusions: A direct model of age estimation for D. cinnabari was developed. According to the fit model, the age in the first (10.1-15 cm) DBH class was estimated to be 111 years, while that in the last DBH class (90.1-95 cm) was estimated to be 672 years. The results revealed that the previously used indirect methods for D. cinnabari age estimation were accurate.O
Comparative Study of the Phenology of Seven Native Deciduous Tree Species in Two Different Mesoclimatic Areas in the Carpathian Basin
Get PDFThe impact of global warming on plant phenology is the subject of a growing number of studies. However, most of these do not focus on woody species, and few examine the entire annual phenological cycle of woody species. In this paper, we explore the phenological pattern of seven woody species native to Europe under ex situ conditions for 3 years, in two urban areas with different mesoclimates. The average temperature differs by 1.81 oC between the two sites. The investigated plants were clonally identical for each species, and the exact same care protocol was kept at both sites. Despite the large variation in the phenological pattern between years, during the study, spring phenophases occurred earlier, while the examined autumn phenophases were delayed at the site observing a higher average temperature. The phenological sensitivity of flowering was significantly higher than that of leaf bud burst. The growing season was 14.8 days longer at the site with a higher average temperature. In most cases, a significant correlation was obtained between the examined phenophases and climatic factors at both sites. Among the autumn phenophases, the strongest correlation was found between the maximum temperature between July and October and the beginning of leaf coloring.O
Social Responsibility for Insurance Companies
Get PDFThe aim of the paper is to verify the quantity and quality of reporting non-financial information disclosed by commercial insurance companies based in the Czech Republic and foreign commercial insurance companies with branches in the Czech Republic. The obligation to disclose non-financial information was introduced in 2017 by the implementation of Directive 2014/95/EU in Czech accounting legislation. To verify the quantity and quality of reporting non-financial information before and after the implementation of the Directive, a comparative analysis was used, examining the years 2016 and 2020. Key indicators from five main areas of non-financial reporting were identified and subsequently the level of their reporting by insurance companies was monitored. All insurance companies in the CR, divided into three main groups, were analysed. These are insurance companies obliged to disclose non-financial information, insurance companies defined as large entities under the Accounting Act, and a group of other insurance companies. The quality of the information reported was assessed using a scoring scale. At the same time the level of reporting non-financial information in the sector of financial institutions in the Czech Republic was compared with the level of reporting in the V4 countries, Germany, and France. Another part of the research was statistical modelling, which by means of correlation and regression analysis identified which factors influence the quality and the level of non-financial reporting. It was shown that gross written premiums and number of employees have the greatest influence. The research revealed that after the implementation of the Directive, there was an increase in non-financial reporting not only in the group of insurance companies obliged to report non-financial information but also in insurance companies with no obligation to do so. The increase in reporting was therefore not only caused by the implementation of the Directive in Czech accounting legislation but also by the growing trend of social responsibility.O
Effect of Drought on the Development of Deschampsia caespitosa (L.) and Selected Soil Parameters during a Three-Year Lysimetric Experiment
Get PDFThis work presents results from a field experiment which was focused on the impact of the drought period on microbial activities in rhizosphere and non-rhizosphere soil. To demonstrate the effect of drought, the pot experiment lasted from 2012 to 2015. Fifteen lysimeters (plastic containers) were prepared in our area of interest. These lysimeters were filled with the subsoil and topsoil from this area and divided into two groups. The first group consisted of two variants: V1 (control) and V2 (84 kg N/ha), which were not stressed by drought. The second group consisted of three variants, V3 (control), V4 (84 kg N/ha), and V5 (84 kg N/ha + 1.25 L lignohumate/ha), which were stressed by drought every year of the experiment for 30 days. Changes in the soil moisture content caused by drought significantly affect the growth of Deschampsia caespitosa L., the microbial activity, and the soil's capacity to retain nutrients. The measured basal respiration and dehydrogenase activity values confirm the significant effect of drought on microbial activity. These values were demonstrably higher in the period before drought simulation by more than 60%. On the other hand, significant differences between microbial activities in the rhizosphere and non-rhizosphere soil were not found. We did not find a clear effect of drought on the formation of soil water repellency.O
Analytical Study for the Determination of the Energy Use Potential of Forest Dendromass in the Czech Republic
Get PDFThe European Union's current pressure on the Member States to adopt both the Green Deal and the Fit for 55 package is leading to an accelerated drive to put in place measures to meet the 2030 climate targets. At the same time, many discussions at the international bilateral meetings of EU country representatives raise the question of the realism of setting climate targets, and therefore, the ability to meet these commitments. The results elaborated in this analytical study offer a realistic picture of the possibilities of meeting strategic climate targets using the example of the use of forest dendromass. The data assess the possibility of achieving a 22% share of renewable energy sources (RES) in gross final energy consumption by 2030 in the Czech Republic. The study points out that at present, the use of forest dendromass from primary production is at its maximum and meeting the climate targets for increasing the share of RES in the energy mix represents a major problem in the long term. The findings published in this study also point to the objective threat of the increased use of dendromass in the energy sector to the maintenance of sustainable forest management and the preservation of forest quality.O
Digital Approach to Successful Business Plans in Forestry and Related Fields
Get PDFThis paper introduces the KABADA (Knowledge Alliance of Business Idea Assessment: Digital Approach) tool, together with the opinions of young people about entrepreneurship, their skills, and their experience with this tool. The focus is on non-business students who study natural sciences, engineering, and other areas at the Faculty of Forestry and Wood Technology at Mendel University in Brno, Czech Republic. The KABADA tool has been developed and tested by a team of international experts. It can be used by a wide audience, including forester management specialists. This structured, web-based platform is based on theoretical research, relevant statistics, and artificial intelligence insights. It guides entrepreneurs through business idea assessment including challenges and opportunities. The research included survey answers from 60 university students before and after using the KABADA tool. The results show that students are interested in entrepreneurship but do not have the knowledge or experience, or support from the curriculum. The majority of the students had no or very low experience with entrepreneurship, no entrepreneurship training, and had not studied entrepreneurship. After using the tool, students declared that they had a higher knowledge of entrepreneurship and the number of students who intended to become an entrepreneur increased. The tool is available online, free of charge.O
Vliv zpracování a různého stupně pražení kávy Arabica na barvu, obsah akrylamidu, kofeinu, kyseliny chlorogenové a polyfenolů
No full textAn effect of a processing method (dry and wet) and a degree of roasting (light, medium, and dark) of 15 coffee (Coffea arabica) samples on the content of caffeine, chlorogenic acid (CQA), total polyphenols (TPP), acrylamide (AA), and on the colour parameters L*, a*, and b* was evaluated. Neither processing nor roasting affected caffeine content (p > 0.05). The degree of roasting accounted for 46% and 72% of explained variability of the CQA content and AA content, respectively (p < 0.05). AA content was in the range from 250 (wet-processed, light-roasted samples) to 305 µg.kgMINUS SIGN 1 (wet-processed, dark-roasted coffees), but the dark roasting only tended (p > 0.05) to increase AA content. Wet-processed, dry-roasted coffee had higher (p < 0.05) TPP content (48.5 mg.gMINUS SIGN 1) than its dry-processed, dry-roasted counterpart (42.5 mg.gMINUS SIGN 1); the method of processing accounted for 70% of explained variability of TPP. Both the method of processing and the degree of roasting affected the L*, a*, and b* values (p < 0.01), but the lower values (p < 0.05) of these parameters in the dark-roasted samples were found only within the wet processing. A negative correlation between the AA content and lightness (L*) was established (r = MINUS SIGN 0.39, p < 0.05). It was concluded that from the consumers' viewpoint, the results of the present study indicate relatively small differences in quality parameters of coffee irrespective of the method of processing or degree of roasting.O
Stakeholders' Perception of the Impact of the Declaration of New Protected Areas on the Development of the Regions Concerned, Case Study: Czech Republic
Get PDFFloodplain forests at the confluence of the rivers Dyje and Morava (in the southeastern tip of the Czech Republic) are completely unique ecosystems in terms of area and ecology. For many years, there has been an effort by the state's nature protection officials to declare the area as a Protected Landscape Area. This effort is met by the resistance of foresters and other local stakeholders. The study focuses on the identification of stakeholders' comments and objections to the planned declaration of the Soutok PLA and the comparison between the objections raised and the attitudes of stakeholders from existing PLAs. Using the content analysis of 247 paper documents, the first part of the study determines the negative arguments that are subsequently verified in the second part on the basis of 17 semistructured standardized interviews and interview surveys of 200 respondents. The analysis of the interviews and surveys was based on the grounded theory method. The theoretical sampling and snowball techniques were used to recruit the respondents. The interviews and surveys showed that most concerns over restrictions established by the conservation status are unnecessary since experience showed that they are either not registered or not established by the PLA status, and their application is provided by other legislative standards.O