Tomas Bata University in Zlín
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Coworking spaces and mid-sized cities in peripheral contexts: Conceptualising development trajectories
Get PDFCoworking spaces and the creative industries represent a rapidly growing but highly diverse shared economy sector. The paper outlines the types of incremental or radical forms of change developed that lead to industrial–institutional coevolution based on evidence from selected cities in Central and Eastern Europe. The results suggest that CS in peripheral areas are contributing primarily to the path upgrading through local embeddedness of stakeholders. These spaces contribute to refocusing local creative ecosystems by enhancing competitiveness of microclusters. Results suggest that CS in peripheral areas are contributing primarily to the path upgrading through local embeddedness of stakeholders through remote workers and digital nomads These cases underline replicative entrepreneurship, where local stakeholders gather momentum for a subsequent period characterised by new internal structures and services in the urban setting. Considering the form of change, our results emphasise the importance of reproductive agency based on diverse services to digital nomads and remote workers.Ministerstvo scaron;kolstva, vedy, vskumu a scaron;portu Slovenskej republik
Adaptation and validation of the academic motivation scale for higher education across four Eastern European countries
Get PDFThe article focuses on adaptation and validation of the Academic Motivation Scale questionnaire (AMS-28) in higher education in four Eastern European countries: Czechia, Slovakia, Serbia, and Poland. The research was conducted with a total of 1711 respondents. We examined the construct validity of AMS-28 including measurement invariance and reliability according to national, gender and age groups. Our analysis confirmed its original seven-factor structure as well as its reliability. The tool is measurement invariant across all compared groups (gender, age, countries) except Poland, whose results are specific. The results identify new places on the world map where AMS-28 is functional. The tool appears functional in time, space and various language mutations. Despite satisfactory results, there is still room for future examination of the AMS-28 among different countries. In practice, the tool has a wide range of application possibilities.European Commissio
Improving the properties of NR/NBR blend by introducing interfacial crosslinks using bismaleimide during the initial phase of accelerated sulfur curing
No full textTo develop a technologically compatible blend of NR and NBR is always a challenge due to their polarity mismatch. As a result, the physico-mechanical properties of their blends are generally poor. To address this issue, an attempt was made to increase the uniform distribution of crosslinks across the blend phases at the time of molding at 170°C. A cure composition consisting of sulfur (S) and a delayed action accelerator (N-cyclohexyl-2-benzothiazole sulfenamide [CBS]) has been designed to co-crosslink both phases of the blend simultaneously. The tensile properties, particularly the tensile strength (TS) of the blend cured by this method, were superior (~371% greater) than the TS of the blend cured using a combination of S/CBS and an ultrafast accelerator (tetramethylthiuram disulfide [TMTD]). A bifunctional maleimide (Maleide F) was also used in conjunction with S/CBS in the curing recipe to further improve the distribution of sulfidic crosslinks by reducing the interfacial tension between the NR and NBR phases via Alder-ene reaction.Ministry of Education, Youth and Sports of the Czech Republic-DKRVO [RP/CPS/2022/006
Assessment of different levels of blackcurrant juice and furcellaran on the quality of fermented whey-based beverages using rheological and mechanical vibration damping techniques
Get PDFIn the current study, fermented whey-based beverage models with different levels of blackcurrant juice (0; 10; 20; 100% (w/w)) and furcellaran (0.25% and 0.50% (w/w)) were produced and evaluated. Physicochemical, rheological, mechanical vibration damping, and sensory analyses were performed. During fermentation (48 h), the values of pH, density, and total soluble solids decreased. On the other hand, the ethanol content during fermentation increased up to a final content in the range of 0.92–4.86% (v/v). The addition of furcellaran was effective in terms of sediment content decrease to a level of 0.25% (w/w). In general, the samples exhibited non-Newtonian pseudoplastic behaviour. The sensory analysis revealed that the sample with a composition of 20% (w/w) blackcurrant juice and 0.50% (w/w) furcellaran received the highest score.Internal Grant Agency of Tomas Bata University in Zlin, (IGA/FT/2024/005); European Regional Development Fund in the Research Centre of Advanced Mechatronic Systems, (CZ.02.1.01/0.0/0.0/16_019/0000867)Internal Grant Agency of Tomas Bata University in Zlin [IGA/FT/2024/005]; European Regional Development Fund in the Research Centre of Advanced Mechatronic Systems project [CZ.02.1.01/0.0/0.0/16_019/0000867
Enhancement of the dyeability and antibacterial properties of cotton fabric by plasma assisted cationization using chitosan and quaternized poly[bis(2-chloroethyl) ether-alt-1,3-bis[3-(dimethylamino)propyl]urea
No full textMany chemicals such as sodium chloride, sodium carbonate, synthetic dyes, oxidants, mordanting and softening agents used in clothing manufacture play a significant role in the pollution of global water resources. In view of cleaner technology, this article reviewed the effect of plasma pre-treatment on the dyeability of cotton fabric using a cleaner salt-free process. Greige cotton fabric was treated with diffuse coplanar surface barrier discharge (DCSBD) in air or nitrogen prior to the dyeing process. Three textile dyes are used in this work, reactive orange 16, direct red 81 and natural dye Acacia catechu (L.f.) Willd. Chitosan (CS) and quaternized poly[bis(2-chloroethyl) ether-alt-1,3-bis[3-(dimethylamino)propyl]urea (PQ-2) were used as cationic polymers to substitute the salt. The effect of the different treatments on the properties of the textile samples and the dyeing process was evaluated using scanning electon microscopy (SEM), ATR-FTIR, tearing strength and colorimetric measurements. The levelness and fastness properties of the obtained cotton samples were also assessed. The treated samples showed interesting colorimetric values proving the enhancement of the dye uptake without the involvement of salt or harmful additives and exhibited significant antibacterial activity.Masarykova Univerzita, MU; Ministry of Education, Youth and Sports of the Czech Republic; Ministerstvo Školství, Mládeže a Tělovýchovy, MŠMT; Tomas Bata University in Zlín, TBU, (Postdoc2MUNI MU CZ.02.2.69/0.0/0.0/18_053/0016952, IGA/CPS/2023/001); Tomas Bata University in Zlín, TBU; DKRVO, (RP/CPS/2022/001)Ministry of Education, Youth and Sports of the Czech Republic [LM2018097, LM2023039]; Ministry of Education, Youth and Sports of the Czech Republic - DKRVO [RP/CPS/2022/001]; Tomas Bata University in Zlin [IGA/CPS/2023/001]; Masaryk University in Brno, Czech Republic [CZ.02.2.69/0.0/0.0/18_053/0016952
Causes and consequences of the capacity crisis In health care organizations
No full textThe presented paper deals with the lack of employees. This situation is called the capacity crisis. The capacity crisis in the Czech Republic is plaguing companies and organizations in the private and public sectors. The paper aimed to map the situation in all hospitals in the Czech Republic using a questionnaire survey and to find out what consequences this capacity crisis has. The situation is even worse now that the Covid-19 pandemic is straining medical facilities like never before. A weighted average for each category was used to evaluate the questionnaire survey and individual preferences. The results of the analysis confirmed the assumption of the author's team. All hospitals face an acute shortage of doctors and nurses, regardless of the size of the organization. A clear consequence of the capacity crisis is the overloading of staff, which is often in conflict with the Labor Code. The paper concludes with a summary and discussion of how to improve the readiness of hospitals in the future. Only a system solution can improve the situation.Project Management in the manufacturing industry of the Czech Republic [RVO/FLKR/2022/04
Microtexturing for enhanced machining: Evaluating tool performance in laser-processed cutting inserts
Get PDFThis study explored the significance of microtexturing on cutting tools to improve tribological performance and reduce friction in machining operations. Drawing inspiration from biomimetic structures, this study focuses on laser surface microtexturing and evaluates its impact on the cutting forces and tool wear. Experiments involved the microtextures of dots with a specific emphasis on a fiber laser-processed pattern. While long-term tests reveal the formation of negative protrusions on textured tools, reduced variability in cutting forces suggests potential benefits for stable machining processes and increased tool longevity. These findings underscore the intricate relationship between microtexturing patterns and tool performance, offering insights into the broader implications of energy-efficient machining.TBU in Zlin; Tomas Bata University in Zlín, TBU, (IGA/FT/2023/001, IGA/FT/2024); Tomas Bata University in Zlín, TBUTBU in Zlin [IGA/FT/2023/001, IGA/FT/2024
The effects of the Russian-Ukrainian crisis on the resources in the Czech manufacturing sector
No full textEconomies have gone through several crises in the recent past. The most serious ones were the Covid-19 pandemic and the current Russian-Ukrainian war. Our paper aimed to identify and analyse the impacts and consequences of the pandemic and the war on the manufacturing sector of the Czech Republic. A literature review, based on the analysis and synthesis of the scientific sources, served as a platform for determining research questions and hypotheses. The article summarizes the research results of the research team in October - November 2022. The gap between the outbreak of the war and the implementation of the research was 7 months. The chi-square test, Cramer's coefficient, and exact binomial test were used to verify the statistical dependencies of the research questions and hypotheses. Attention is also focused on risk prevention, as research results show that there has been a sharp increase in the supplier and personnel risks
The importance of resistance in the context of critical infrastructure resilience: An extension of the CIERA method
Get PDFTechnical sectors compose an inseparable and elementary part of a complex critical infrastructure (CI) system. Their provided services are essential to the functioning of all of the dependent sectors of CI on which society and states depend, especially in areas experiencing high levels of urbanisation. The initial point for effective CI elements' protection is the permanent assessment and strengthening of their capacity for resilience to the negative effects of internal and external threats. The current perceptions of resilience focus primarily on repressive components responsive to incidents (i.e., robustness, recoverability, and adaptability), while minimal attention is paid to the preventative components. The article's contribution to this literature gap is its definition of resistance, which can be considered as a CI element's ability to prevent the occurrence of incidents. To this goal, the current study defines (1) the individual factors (variables and parameters) determining CI resistance and (2) the methodological procedure for infrastructure element resistance assessment in order to identify the weak points throughout a complex CI system and subsequently strengthen them. Moreover, a practical example of resistance assessment for a selected critical energy infrastructure element is presented. The main outcome of this article is the definition of the primary steps for the expansion of the CIERA method, via the enhancement of CI components' resilience capacity in the prevention phase.Ministerstvo Vnitra České Republiky, (VK01030014)Ministry of the Interior of the Czech Republi
Is the best–worst method path dependent? Evidence from an empirical study
No full textThe Best–Worst method (BWM) is one of the latest contributions to pairwise comparisons methods. As its name suggests, it is based on pairwise comparisons of all criteria (or possibly other objects, such as alternatives, sub-criteria, etc.) with respect to the best (most important) and the worst (least important) criterion. The main aim of this study is to investigate the path and scale dependency of the BWM. Up to now, it is unknown whether the weights of compared objects obtained by the method differ when the objects are compared first with the best object, and then with the worst, or vice versa. It is also unknown if the outcomes of the method differ when compared objects are presented in a different order, or when different scales are applied. Therefore, an experiment in a laboratory setting is performed with more than 800 respondents university undergraduates from two countries in which the respondents compare areas of randomly generated figures and the relative size of objects is then estimated via the linearized version of the BWM. Last but not least, the accuracy of the BWM is examined with respect to different comparison scales, including Saaty’s nine-point linguistic scale, an integer scale from 1 to 9, and a continuous scale from 1 to infinity.Podpora mezinarodnych mobilit na Slezske, (CZ.02.2.69/0.0/0.0/18_053/0017871)The research conducted by J. Mazurek was partially supported by the project GACR No. 21-03085S, Czech Republic. The research conducted by D. Strzalstrok;ka was partially supported by the grant: Podpora mezinarodnych mobilit na Slezske univerzite v Opave, [21-03085S, CZ.02.2.69/0.0/0.0/18_053/0017871]; project GAC