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Highly porous polymer beads coated with nanometer-thick metal oxide films for photocatalytic oxidation of bisphenol A
Gergő Ballai, Tomaž Kotnik, Matjaž Finšgar, Albin Pintar, Zoltán Kónya, András Sápi, Sebastijan Kovačič, 2023, izvirni znanstveni članek

Opis: Highly porous metal oxide−polymer nanocomposites are attracting considerable interest due to their unique structural and functional features. A porous polymer matrix brings properties such as high porosity and permeability, while the metal oxide phase adds functionality. For the metal oxide phase to perform its function, it must be fully accessible, and this is possible only at the pore surface, but functioning surfaces require controlled engineering, which remains a challenge. Here, highly porous nanocomposite beads based on thin metal oxide nanocoatings and polymerized high internal phase emulsions (polyHIPEs) are demonstrated. By leveraging the unique properties of polyHIPEs, i.e., a three-dimensional (3D) interconnected network of macropores, and high-precision of the atomic-layer-deposition technique (ALD), we were able to homogeneously coat the entire surface of the pores in polyHIPE beads with TiO$_2$-, ZnO-, and Al$_2$O$_3$-based nanocoatings. Parameters such as nanocoating thickness, growth per cycle (GPC), and metal oxide (MO) composition were systematically controlled by varying the number of deposition cycles and dosing time under specific process conditions. The combination of polyHIPE structure and ALD technique proved advantageous, as MO-nanocoatings with thicknesses between 11 ± 3 and 40 ± 9 nm for TiO$_2$ or 31 ± 6 and 74 ± 28 nm for ZnO and Al$_2$O$_3$, respectively, were successfully fabricated. It has been shown that the number of ALD cycles affects both the thickness and crystallinity of the MO nanocoatings. Finally, the potential of ALD-derived TiO$_2$-polyHIPE beads in photocatalytic oxidation of an aqueous bisphenol A (BPA) solution was demonstrated. The beads exhibited about five times higher activity than nanocomposite beads prepared by the conventional (Pickering) method. Such ALD-derived polyHIPE nanocomposites could find wide application in nanotechnology, sensor development, or catalysis.
Ključne besede: nanovlakna, aerosoli, filtracija, emulsion-templating, macroporous polymers, atomic-layer-deposition
Objavljeno v DKUM: 15.04.2024; Ogledov: 114; Prenosov: 6
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Learning Chinese as a foreign language : an introduction
Juliane House, Dániel Z. Kádár, 2023, drugi znanstveni članki

Opis: In this introductory paper, we first present the background of the present special issue dedicated to Willis Edmondson. We first point out why Edmondson provided a ground-breaking contribution to the field of applied linguistics and why it is particularly timely to edit a special issue centering on his framework. We also argue that Edmondson's bottom-up and strictly language-anchored view on speech acts and interaction is particularly useful to examine the learning of Chinese as a foreign language, by going beyond exoticizing and overgeneralizing views of the Chinese linguaculture. Second, we briefly present what can be regarded as the heart and soul of the Edmondsonian framework, that is, a typology of speech acts and a related procedure through which the relationship between speech acts in interaction can be captured. Third, we present a research procedure that we outlined in our previous work, and which helps implementing the Edmondsonian model in the pragmatic study of foreign language learning. Finally, we present the contents of the special issue.
Ključne besede: Chinese, interaction, speech acts, second language pragmatics
Objavljeno v DKUM: 21.02.2024; Ogledov: 172; Prenosov: 9
.pdf Celotno besedilo (348,04 KB)
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Learning Chinese in a study abroad context : the case of ritual congratulating
Juliane House, Dániel Z. Kádár, 2023, izvirni znanstveni članek

Opis: In this paper, we explore how and why the realisation of the ritual act of congratulating may turn out to be challenging for foreign learners of Chinese. Congratulating and other ceremonial ritual acts are not only used when someone participates in an actual ritual event: they are also required when they are mentioned in mundane events, like casual interactions when someone talks about a family birthday or wedding. We define congratulation as an interactional move and systematically examine its conventional realisation patterns through a typology of speech acts. We approach congratulating moves by combining a speech act-anchored analysis with the field of study abroad and interaction ritual research. The results of our analysis show that various ritual occasions may trigger different types of inappropriate uses of congratulating by foreign learners of Chinese.
Ključne besede: Chinese, interaction rituals, speech acts, study abroad, congratulating
Objavljeno v DKUM: 20.02.2024; Ogledov: 264; Prenosov: 6
.pdf Celotno besedilo (462,61 KB)
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Characteristics of innovation in regions with small- and medium-sized towns
Zoltán Birkner, Tivadar Máhr, Erzsébet Péter, Nora Berkes Rodek, 2018, izvirni znanstveni članek

Opis: Globalisation “takes” its victims, which the authors believe means that the future of small- and medium-sized towns has become uncertain in Europe. The role of centres is continuously increasing, and most researchers prefer to analyse the competitiveness and innovativeness of metropolitan areas. In this study, we characterise the small- and medium-sized towns in the central–eastern European region as well as explore their possible development path. The authors are convinced that one way for these towns to survive is through strengthening of innovation abilities, which means increasing the innovation performances of economic stakeholders and new forms of interaction among other institutions in order to handle social problems. The theoretical starting point is the interpretation and presentation of the micropolitan (without big towns) regions as well as understanding the concept of technological and social innovation. As the result of the research, the innovation measurements carried out in some of the settlements will be represented. These experiences can help the small- and medium-sized towns keep up with global competition and cancel migration and erosion of intellectual potential.
Ključne besede: micropolitan region, innovation in regions, technological and social innovation, competition
Objavljeno v DKUM: 10.10.2018; Ogledov: 1368; Prenosov: 344
.pdf Celotno besedilo (278,38 KB)
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Knowledge base of the region - role of the universities in regional innovation : the case of south Transdanubia
Zoltán Gál, 2008, izvirni znanstveni članek

Opis: The economic attraction and competitiveness of the regions depends on the spatially balanced network-based co-operation of different research bases and firms involved in innovation development. The utilisation of the regional knowledge base, innovation potential and co- operation between businesses and universities & research institutions continues to play an increasing role in regard to business success and the competitive economic performance of the regions. Innovation is considered as an interactive and system-like process depending on traditions with definite spatial forms and it is manifested in the form of “networks” among the companies and universities, and among the different transfer organisations, which can stimulate university-industry linkages. The paper presents the findings of the “ERAWATCH regional benchmarking surveys – in which the South Transdanubian region participated in – on innovation potential and investment into research” surveys concentrating on the role of innovation networks, within them highlighting the special role of regional universities in the collaborative research networks. The introduction is followed by a demonstration highlighting the role of universities in national and regional knowledge transfer emphasizing the fact that the spatial (regional) structure of innovation is very much determined by the transformation of potential universities and their widening innovative functions during the economic transition in Hungary. The next section provides an overview of findings of the ERAWATCH survey (2006) on the role of universities in regional network building and discusses those factors that are necessary for the establishment of a research university model. The last section assesses the efficiency and coherence of the Regional Innovation System with regard to the needs and capacities of the regional economies and the extent of matching or mismatching between the knowledge and economic specialization.
Ključne besede: regional innovation, knowledge base, ERAWATCH Survey, university-firm links, knowledge and economic specialization
Objavljeno v DKUM: 14.03.2018; Ogledov: 1150; Prenosov: 91
.pdf Celotno besedilo (164,07 KB)
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Translation as the mutual reflection of neighbouring nations : (about the cultural activity of Kornél Szenteleky)
Zoltán Virág, 2011, izvirni znanstveni članek

Opis: In the context of Kornél Szenteleky’s volumes of short stories, novels and essays, this essay examines the types of disposition, life experience, typical topographies and genres of the author’s epic works. The roles, stock of phrases and experiences of deprivation present in the world of Szenteleky’s short stories, novels and essays relate his prose to several authors of a significant trend in Croatian, Serbian and Slovenian literature. The essay observes the existential spaces and boundaries of Szenteleky’s oeuvre, viewing it as going along the trails of existential experience of multiethnicity, minority identity, peripheral existence, cultural crossroads and traumas.
Ključne besede: Kornél Szenteleky, cultural activism, regional identity, multiethnicity, experience of deprivation, mutual reflexivity
Objavljeno v DKUM: 06.02.2018; Ogledov: 1108; Prenosov: 207
.pdf Celotno besedilo (309,78 KB)
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Changes in responsibilities and tasks of universities in regional innovation ecosystems
Zoltán Birkner, Tivadar Máhr, Nora Berkes Rodek, 2017, izvirni znanstveni članek

Opis: Innovation process research is changing. In addition to the former territorial approach (examining countries or regions), the description of innovation cooperation in local areas is becoming more and more accepted. Instead of the innovation ability of the traditional large enterprises, research has begun to study the role of small and medium-sized enterprises, non-governmental organizations, local governments, and educational institutions (especially universities), which foreshadows the development of a new innovation system. In 2015, we conducted a study focusing on the civil and corporate relations of a major university. We tried to determine the new directions based on the economic and social cooperation as well as to search for the practical implementation of the theoretical helixes in these interactions. We came to the conclusion that universities not only are determinative according to the triple helix model but also have a prominent role in the creation of new innovation ecosystems, particularly in a well-defined geographical area.
Ključne besede: helix models, innovation, social innovation, university relations
Objavljeno v DKUM: 13.11.2017; Ogledov: 971; Prenosov: 366
.pdf Celotno besedilo (247,44 KB)
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Kakovost življenja starostnikov z depresijo
Zoltan Pap, 2013, diplomsko delo

Opis: Teoretična izhodišča in namen: V diplomskem delu smo predstavili duševno motnjo depresijo, ki je najpogostejša duševna motnja v vseh starostnih obdobjih. Klinična slika depresivne motnje je zelo heterogena, saj ima specifične značilnosti, ki so odvisni predvsem od spola in starosti obolelih oseb. Epidemiološke značilnosti, etiologija in klinična slika depresije pri starostnikih so predstavljene z namenom, da prispevamo k boljšemu razumevanju vpliva depresivne motnje na kakovost življenja starostnikov. Raziskovalne metode: V raziskavo smo vključili 138 starostnikov – stanovalcev izbranih domov za starejše občane v Pomurju. Polovica vseh anketiranih starostnikov je imela diagnosticirano depresivno motnjo ali so prejemali antidepresivno terapijo, druga polovica anketiranih pa ne. Raziskava je temeljila na primerjavi kakovosti življenja dveh skupin starostnikov s pomočjo vprašalnika EuroQol EQ-5D (Euro Quality of Life – 5 Dimension), ki je namenjen ocenjevanju kakovosti življenja v povezavi z zdravstvenim stanjem. Vprašalnik je sestavljen iz petih vprašanj, ki se nanašajo na področja okretnosti, osebne nege, običajnih dejavnosti, bolečine in depresije oziroma zaskrbljenosti ter vizualno-analogne skale. Rezultati: Ugotovili smo, da je kakovost življenja depresivnih stanovalcev značilno slabša (p < 0,001) kot kakovost življenja stanovalcev brez depresije. Stanovalci z depresijo se značilno manj (p < 0,005) vključujejo v družabne aktivnosti kot stanovalci brez depresije. Prav tako je samoocena zdravja anketiranih stanovalcev z depresijo, prikazana z vizualno-analogno skalo, značilno slabša (p < 0,001) kot pri stanovalcih brez depresije. Sklep: Raziskava dokazuje potrebo po nenehnem raziskovanju in spremljanju kakovosti življenja starostnikov, še zlasti tistih v domovih za starejše. Le na osnovi izsledkov je mogoče načrtovati in izvajati ukrepe za izboljšanje kakovosti življenja starejših. Predvsem je pomembno, da zaposleni v domovih za starejše poznajo značilnosti depresije v starostnem obdobju in načrtujejo ustrezne aktivnosti. Ohranjati je potrebno posameznikov občutek lastne učinkovitosti in zadovoljstva ter ohranjati in spodbujati socialne stike z družino, prijatelji in znanci. Prav tako je potrebna vključitev prostovoljnega dela s starostniki in medgeneracijsko sodelovanje, ki je v tujini zelo dobro razvito in ima dokazane pozitivne učinke. Izboljšanje kakovosti življenja stanovalcev domov za starejše lahko zagotovimo s celovitim individualnim pristopom.
Ključne besede: depresija, starostnik, kakovost življenja, domsko varstvo
Objavljeno v DKUM: 24.01.2014; Ogledov: 3003; Prenosov: 551
.pdf Celotno besedilo (4,23 MB)

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