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This paper aims to analyse the price gradient of apartments in the city of Bratislava with different measurements of travel time and distance to the city centre.
Abstract
Purpose
This paper aims to analyse the price gradient of apartments in the city of Bratislava with different measurements of travel time and distance to the city centre.
Design/methodology/approach
The price gradient is analysed by means of a hedonic price model. To overcome the problem with spatial autocorrelation in the data, the authors apply a spatial error model.
Findings
The paper provides empirical insights into the size of the price gradient in the city of Bratislava. In addition, it suggests that even in the case of a city with complicated urban structure, Euclidean distance is the best proxy for distance to the city centre and it is not necessary to use a more demanding distance calculation in hedonic price models.
Originality/value
Price gradients are usually analysed in western European or American cities whose urban structure differ from the cities in central and eastern Europe. This paper is the first in which the price gradient is estimated with different measurements of time and distance to the city centre using a spatial econometric model.
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Samuel Furka, Daniel Furka, Nitin Chandra Teja Chandra Teja Dadi, Patrik Palacka, Dominika Hromníková, Julio Ariel Dueñas Santana, Javier Díaz Pineda, Saul Dueñas Casas and Juraj Bujdák
This study aims to describe the preparation of antimicrobial material usable in 3D printing of medical devices. Despite the wealth of technological progress at the time of the…
Abstract
Purpose
This study aims to describe the preparation of antimicrobial material usable in 3D printing of medical devices. Despite the wealth of technological progress at the time of the crisis caused by SARS-CoV-2 virus: Virus that causes current Pandemic situation (COVID-19), the global population had long been exposed beforehand to an acute absence of essential medical devices. As a response, a new type of composite materials intended for rapid prototyping, based on layered silicate saponite (Sap), antimicrobial dye phloxine B (PhB) and thermoplastics, has been recently developed.
Design/methodology/approach
Sap was modified with a cationic surfactant and subsequently functionalized with PhB. The hybrid material in powder form was then grounded with polyethylene terephthalate-glycol (PETG) or polylactic acid (PLA) in a precisely defined weight ratio and extruded into printing filaments. The stability and level of cytotoxicity of these materials in various physiological environments simulating the human body have been studied. The applicability of these materials in bacteria and a yeast-infected environment was evaluated.
Findings
Ideal content of the hybrid material, with respect to thermoplastic, was 15 weight %. Optimal printing temperature and speed, with respect to maintaining antimicrobial activity of the prepared materials, were T = 215°C at 50 mm/s for PETG/SapPhB and T = 230°C at 40 mm/s for PLA/SapPhB. 3 D-printed air filters made of these materials could keep inner air flow at 63.5% and 76.8% of the original value for the PLA/SapPhB and PETG/SapPhB, respectively, whereas the same components made without PhB had a 100% reduction of airflow.
Practical implications
The designed materials can be used for rapid prototyping of medical devices.
Originality/value
The new materials have been immediately used in the construction of an emergency lung ventilator, Q-vent, which has been used in different countries during the COVID-19 crisis.
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Simon Manyiwa, Constantinos Vasilios Priporas and Xuan Lorna Wang
This study aims to examine the influence of perceived city brand image on emotional attachment to the city. The study also compares the effects of perceived brand image of the…
Abstract
Purpose
This study aims to examine the influence of perceived city brand image on emotional attachment to the city. The study also compares the effects of perceived brand image of the city on the emotional attachment to the city across two groups: local residents and visitors.
Design/methodology/approach
A total of 207 usable questionnaires were collected from 107 residents of the city of Bratislava, Slovakia and 100 visitors to the city. Partial least square structural equation modeling (PLS-SEM) method was used for data analysis.
Findings
This study establishes that perceived city brand image significantly influences emotional attachment to the city. The study concludes that affective city image has a greater impact on emotional attachment to the city among the residents than visitors. By contrast, the influence of cognitive city image on emotional attachment to the city does not vary across the two categories of residents and visitors to the city.
Practical implications
City tourism marketers should focus on improving city brand images to enhance tourists’ emotional attachment to the city to promote repeat visits among visitors.
Originality/value
This study contributes to improving understanding of the impact of perceived city brand image on emotional attachment to the city across the two groups, residents and visitors, using social exchange theory (SET). Furthermore, the findings come from a relatively under-researched Central and Eastern European (CEE) region.
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T. Lalinsky´, Sˇ. Haščík, Ž. Mozolová, E. Burian, M. Krnáč, M. Tomáška, J. Škriniarová, M. Drzˇík, I. Kosticˇ and L. Matay
A new micromachining technology of mechanically fixed and thermally insulated cantilevers, bridges and islands was developed to be used for design of GaAs heterostructure based…
Abstract
A new micromachining technology of mechanically fixed and thermally insulated cantilevers, bridges and islands was developed to be used for design of GaAs heterostructure based microelectromechanical systems (MEMS) devices. Based on the micromachining technology, two different MEMS devices were designed and analyzed. The first one was micromechanical thermal converter (MTC) and the second one was a micromechanical coplanar waveguide (MCPW). The basic electro‐thermal as well as microwave properties of the MEMS devices designed are investigated. The results obtained are also supported by simulation. The advantages of the fixed micromechanical structures in the field of design of new MEMS devices are discussed.
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Abstract
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The Bratislava summit.
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DOI: 10.1108/OXAN-DB213766
ISSN: 2633-304X
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Geographic
Topical
Juraj Wagner, Vltězslav Hájek, Renata Führichová, Dušan Maga, Dipl Ing Roman Guba and Dipl Ing Jozef Opaterný
The analysis of the magnetic field and computation of the leakage magnetic flux is important for optimum design of the motor, especially for the small machines on low voltage…
Abstract
The analysis of the magnetic field and computation of the leakage magnetic flux is important for optimum design of the motor, especially for the small machines on low voltage loaded from the accumulator battery. In our contribution we analyzed the computation of the leakage magnetic field and flux by means of analytical, respective numerical methods (Finite Elements Method — FEM).
L'ubica Sobotová, Tanˇa Nosková, Janka Voleková and L'ubica Ághová
A hospital represents a special environment, serving health care to patients, and as a work environment for medical and other staff. The problems of the hospital environment, its…
Abstract
A hospital represents a special environment, serving health care to patients, and as a work environment for medical and other staff. The problems of the hospital environment, its risks and the prevention of nosocomial infections have become an important topic in activities concerning the environmental education of medical students at the Institute of Hygiene, Faculty of Medicine, Comenius University, Bratislava, Slovak Republic. Educational objectives were different, regarding knowledge, behaviour, attitude and social action. The hygienic level of the hospital ward was observed by students themselves, including microclimate assessment and evaluations. Microbial contamination and acoustic well‐being of the indoor air in a hospital ward were also assessed. Results from environmental investigations performed in several hospitals have shown improvement of microbial contamination in internal, surgical and neurological departments. We believe that if educational objectives targeted at the beginning of practical sessions are fulfilled then medical students will think and behave more pro‐environmentally.
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Darina Rojíková, Kamila Borseková, Katarína Vitálišová and Anna Vaňová
The present chapter aims to assess how digital transformation impacts current trends in city branding, to analyze the role of digital communication in the branding of selected…
Abstract
The present chapter aims to assess how digital transformation impacts current trends in city branding, to analyze the role of digital communication in the branding of selected cities, and to compare the level of exploitation of digital communication for city branding between European and Slovak cities. We conducted empirical research in several phases, and the overall sample consists of 155 cities in Europe and Slovakia. The results of our research showed that European and Slovak cities use to some extent all the investigated tools of digital marketing communication in city branding with a dominant position of social media, both in terms of exploitation and importance for city branding in European and Slovak cities. European cities score significantly better than Slovak cities in all elements of the City Brand Hexagon, as well as in the overall city brand index. Therefore, city branding strategies in the best European cities can serve as a good practice example or inspiration for Slovak cities. Cities with lower rankings and scores on city branding should focus on strengthening their city branding or strengthening their digital communication. The possible trajectory is also the concerted strategy for the branding of the city and its digital communication.
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L. Hluchy, O. Habala, B. Simo, J. Astalos, V.D. Tran and M. Dobrucky
This paper presents a prototype of the collaborative problem solving environment (PSE) for flood forecasting. Flood forecasting is a complex problem that requires cooperation of…
Abstract
This paper presents a prototype of the collaborative problem solving environment (PSE) for flood forecasting. Flood forecasting is a complex problem that requires cooperation of many scientists in different areas. To enable this cooperation in a manner comfortable to hydrometeorological experts, a part of the CrossGrid project is aimed towards developing a PSE, whose prototype is described here. The PSE consists of a cascade of simulation models, a storage system for computed and measured data and other used datasets, a Web‐based portal with collaboration tools and a powerful computation facility. The whole system is tied together by grid technology and is used to support a virtual organization of experts, developers and users.
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