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How Socioeconomic Status Differences Observable in Students' Delay of Gratification Evolved Over the Period of COVID-19-induced Online Education
Full text linkWe show the evolution of the delay of gratification (DG) in 950 students aged 10–14 during coronavirus-induced home-based online education, by analysing data from two waves of voluntary online surveys. Students in the highest SES category experienced an absolute increase in DG, whereas those in the lowest SES category suffered a decrease, resulting in a widening SES gap between the groups over a relatively short 30-day period
Strategic dynamics in hydrogen deployment : a game-theoretical review of competition, cooperation, and coopetition
Full text linkAs hydrogen products emerge as a promising energy alternative in multiple sectors, low carbon hydrogen supply chains require concerted efforts among a diverse array of stakeholders. Within an evolving energy transition landscape, stakeholders' competition and cooperation play a critical role in expediting the deployment of the hydrogen economy. In this review, different strategies referred to as Hydrogen Competition, Cooperation, and Coopetition (H2CCC) dynamics are analyzed from the lenses of game theory. The study employs hybrid literature review methodology, integrating both bibliometric and structured review approaches. The study reveals that competition and cooperation represent a contrasting but interconnected dynamics that drive the energy transition. Coopetition models are less common. Furthermore, it is observed that Integrated Energy Systems are mainly used in cooperative and coopetitive approaches while H2 technologies and Hydrogen Supply Chains are more explored in competitive approaches. Industrial and mobility sectors are present in H2CCC dynamics with technological players more present than institutional entities. Maps, definitions, gaps and perspectives are developed. These insights may be valuable for policymakers, industry stakeholders, modelers, and researchers. There remains a need for further empirical H2CCC case studies and applications of pure coopetitive games. © 2025 Elsevier B.V., All rights reserved
Who Produces Natural Wine (and Who Would Like To)?
Full text linkIn a world where wine markets are losing ground, the natural wine segment appears healthy and growing, gaining an increasing acceptance among consumers, the media and within wineries product lines. This dynamic category is broadly understood as wine crafted from organic or biodynamic grapes, made with minimal cellar intervention and no additives, with the rare exception of small sulfite doses. However, despite its growth and relevance for rural economies linked to viticulture, natural wine remains a largely debated product category, lacking universally agreed-upon standards or unified third-party certifications. This study tackles the crucial lack of definition clarity and disputes among producers regarding what constitutes natural wine and who genuinely meets the standards to be recognized as a natural winemaker by relying on wine producers' self-stated adscription to natural winemaking. We address producer profiles and motivations within this emerging agricultural niche. Using survey responses from 514 wine producers in six European countries, we first identify key socio-economic differences between natural wine producers and non-producers. Second, we analyze the key factors of producers’ behavior towards natural wine production by applying a logistic regression model. Finally, applying a Partial Least Square Structural Equation Model (PLS-SEM) based on the Theory of Planned Behavior (TPB), we examine the behavioral factors influencing non-producers' intention to adopt natural wine production. The findings indicate that the intention to produce natural wine is primarily associated with pre-existing attitude mediated by subjective norm and perceived behavioral control. Furthermore, our results highlight divergent opinions among producers and non-producers concerning the motivations for natural wine production. These comprehensive insights are vital for designing effective institutional rural policies and management measures to foster the sustainable growth and economic viability of this unique viticulture segment in rural areas. © 2025 The Authors
Apportionment methods in resource allocation
Full text linkThe efficient use of resources is of paramount importance in any organization, and this is especially true of the use of human resources. We are considering an organization with a fixed number of workers over a network of subunits. The relative efficiency of these units can be uncovered using Data Envelopment Analysis (DEA) methods. How do we overcome efficiency differences when resources are constrained? Motivated by concerns for quality assurance, we use a method that lexicographically minimizes the tasks per worker. We present a fast algorithm to calculate the optimal allocation. Connections to the apportionment literature — mostly focusing on the fair allocation of voting districts among geographical or administrative regions, — are discussed. The allocation can be validated using DEA: efficiency indicators are now levelled.
The method is illustrated using data from salary administrators at the Hungarian State Treasury’s 19 county-level subsidiaries. Knowing the number of standard administrative tasks for each subsidiary and each month, we allocate workers proportionally to the busiest months. After the reallocation, the relative efficiency of the worst-performing counties moves from about 60% to over 90%
Institutional ownership and bond pricing : evidence from China
Full text linkThis paper examines the impact of institutional ownership on the bond yield spreads of publicly traded Chinese firms. Our research results show the presence of a U-shaped, non-linear relationship between the shareholdings of institutional investors and bond yield spreads. Heterogeneity tests reveal differences in the impact of institutional ownership on yield spreads among different types of institutional investors and for firms in which members of the central government stabilization fund, commonly referred to as "national team" institutions, hold shares. Further tests indicate that corporate governance levels and firm performance serve as channels through which institutional shareholders affect bond yield spreads
Phygital dynamic capabilities : microfoundations and their reversed interplay
Full text linkThe convergence of physical and digital worlds—referred to as “phygital”—is reshaping how organizations develop and deploy strategic capabilities. While previous research has mainly focused on customer experience (CX), little is known about the organizational capabilities enabling firms to operate effectively in these phygital ecosystems. Adopting a dynamic capabilities (DCs) perspective, this study examines how firms sense opportunities, seize them, and reconfigure resources within phygital ecosystems. Building on Baskerville et al.'s (2020) notion of “ontological reversal”, we position phygital as a distinct form of DC extending beyond CX to impact operational, technological, and structural dimensions. Drawing on an exploratory case study of Webidoo Store, this study investigates how firms develop phygital dynamic capabilities (PDCs), the ability to identify opportunities across physical and digital layers, orchestrate hybrid resources, and transform operations by integrating digital intelligence with physical components into a cohesive, data-driven ecosystem. We identify the microfoundations (MFs) of PDCs across individuals, processes, and structure, uncovering mechanisms by which PDCs are created, expressed and transformed. Moving beyond a CX-centric view, this study provides a theoretical foundation for phygital capability development, and managerial insights on how organizations can strategically orchestrate and reconfigure hybrid resources to achieve competitive advantage in an evolving digital-physical landscape. © 2025 The Author
Art as a Channel and Embodiment of Symbolic Interaction Between Migrants and Non‐Migrants
Full text linkMany non‐migrant politicians, journalists, and scholars in migrant‐ destination societies often represent migrants with self‐interested objectives and in specific instrumental ways based on stereotypes. Yet research on symbolic interaction reveals migrants are not passive victims. They actively and strategically shape their interactions with non‐migrants. The artwork produced by Chinese migrant artists becomes a non‐verbal channel through which the migrant can convey such challenges to non‐migrants who can more empathetically appreciate these challenges. By analyzing the artwork and narratives of first‐generation migrant artists, I show how art highlights various challenges that migrants confront in their process of immigration, like enduring physical pain, conforming to the institutions of the host society, navigating language barriers, confronting regular cultural clashes, accepting social estrangement, and coping with double consciousness. This paper shows how migrant art can serve as a semiotic object that reveals important features of past symbolic interactions between migrants and non‐migrants and offers a channel through which non‐migrants can potentially empathize more with migrants' experiences
Development and testing the psychometric properties of 20 bolt-on items for the EQ-5D-5L across 31 rare diseases
Full text linkObjective:
Our objective was to develop and assess the psychometric properties of relevant bolt-on items for the EQ-5D-5L in patients with rare diseases (RDs).
Methods:
Nineteen new EQ-5D-5L bolt-ons were developed based on literature review, expert input and qualitative interviews and focus groups with patients, caregivers and representatives of patient associations. A nationwide, cross-sectional, web-based survey in China included patients or caregivers of patients with 31 RDs in China (n=9,190). In each RDs, participants completed the EQ-5D-5L and three out of 20 [one existing and 19 newly-developed] bolt-ons. Ceiling, explanatory power, convergent, divergent and known-group validity were examined.
Results:
Among the bolt-ons, itching had the lowest ceiling (6.5%), while social relationships had the highest (42.2%). The absolute reduction in the ceiling of the EQ-5D-5L with the addition of any bolt-ons was limited, ranging from 0 (respiratory problems) to 8.3%-points (isolation). Dignity and vitality resulted in the largest increase in explained variance in EQ VAS. The isolation, fertility and visual acuity bolt-ons showed good divergent validity from the EQ-5D-5L items. There was strong convergent validity between SF-12 and conceptually-related bolt-ons (e.g., physical health composite and muscle problems bolt-on). Various bolt-ons improved the known-groups validity in specific patient groups, e.g., Huntington’s disease (oral expressions), scleroderma (dexterity), myasthenia gravis (muscle problems), neuromyelitis optica and multiple sclerosis (fatigue), Marfan syndrome (self-image) and Pompe disease (safety).
Conclusion:
The EQ-5D-5L shows sufficient validity in most RDs, but incorporating relevant specific bolt-ons could enhance its ability to more comprehensively assess health-related quality of life in these patients
Impact of institutional change programs on digital and sustainable public sector governance
Full text linkPurpose:
Institutional change (IC) programs in the public sector are often driven by sustainability and digitalisation as contextual factors, contributing to the development of digital and sustainable governance (DSG) systems. This study aims to explore the longitudinal impact of ICs on DSG advancements.
Design/methodology/approach:
We collected and analysed data of 200 public sector organisations in two European countries and conducted a longitudinal analysis, focusing on the impact of European Union-funded IC programs.
Findings:
Results show that steps towards digital governance (DG) are demonstrably linked to environmental efforts, and EU-funded IC programs could have a long-term positive impact on digital and environmentally sustainable governance in Europe. Findings, however, highlight the unbalanced nature of sustainability governance, as environmental and policy-related conditions and activities seem to be overemphasised.
Practical implications:
Environmental policy seems to be established, but future DG initiatives should consider more environmental polity conditions and activities (e.g. dedicated departments), as well as economic and social sustainability to ensure well-balanced governance systems.
Originality/value:
To the best of our knowledge, this is the first study that explores empirically how prior IC programs affect future DSG in the public sector
A hallgatói jelentkezési számok mögött meghúzódó indokok vizsgálata a felsőoktatási szolgáltatásminőség tükrében
Full text linkA felsőoktatás napjainkban számos kihívással szembesül, amelyek közül az egyik legjelentősebb a hallgatói létszám változása a különböző képzési területeken. A vizsgált egyetemen a szakirányú továbbképzésekre jelentkezők száma emelkedett, míg a mesterképzések iránti érdeklődés csökkent a COVID-19-et követő időszakban. A kutatás célja az volt, hogy kimondottan a szolgáltatásminőség dimenziók vizsgálatán keresztül tárja fel a Szegedi Tudományegyetem Gazdaságtudományi Karán a szakirányú továbbképzések iránti megnövekedett érdeklődés és a mesterképzések alacsonyabb jelentkezési száma mögött meghúzódó okokat. Kvalitatív fókuszcsoportos megkérdezések alapján, valamint a SERVQUAL-módszer alkalmazásával kérdőíves felmérést végeztek a szerzők. Az eredmények arra utalnak, hogy a szakirányú továbbképzések iránti érdeklődés főként a konkrét munkaerőpiaci igényekhez kapcsolódik, míg a mesterképzések esetében inkább a látókör szélesítése és a tudásbővítés a fő motiváció. Mindkét csoport esetében magasabbak voltak az elvárások az észlelt szolgáltatásminőségnél, ami számos fejlesztési javaslatot vet fel az egyetemi kar számára