Journals Published by Vilnius Tech
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Spatial structures in event-place formation
Full text linkEvent-places occupy different physical layouts, but we lack a comprehensive understanding of their structures and arrangements. This study aims to uncover some of these patterns by examining various urban spaces recognized as event-places. By reviewing the research background, a variety of definitions and terms were observed in this field. So, by drawing on existing knowledge and exploring similar terms for event places, six events have been selected for analysis: the Tiananmen Square Protest events, the Al-Tahrir Square Political Event, the Oëral Event, the Bangor Folk Event, the Rio Event, and the 2008 Olympics. In selecting the events, an effort was made to select cases that could cover different interpretations. Through categorizing events as either planned or unplanned, this research demonstrates that decisions concerning selection, alteration, or creation significantly influence the spatial layout of events. The extent of spatial change or the potential for constructing dedicated event venues is directly linked to the size of the event and its impact. Within event places, venues can take various forms, such as expansive areas with multiple entry points (Al-Tahrir Square Political Event and Tiananmen Square Protest events), linear layouts (Rio Event), central hubs (2008 Olympics and Oëral Event), or combinations thereof (Bangor Folk Event)
The role of network value alignment (NVA) in improving marketing performance
Full text linkThis research was conducted to identify factors in enhancing marketing performance by testing several aspects such as service orientation, service climate, and network value alignment (NVA). Furthermore, an identification was performed on the factors influencing the improvement of marketing performance from the perspective of Service-Dominant Logic (SDL) theory. This research was conducted on 226 respondents, comprising managers of microfinance institutions in Central Java, Indonesia, with a participation rate of 75%. The data was analyzed using structural equation modeling and AMOS 24 software was adopted in testing the hypotheses. The results showed that NVA strengthened the influence of service orientation on microfinance marketing performance through the support of service climate. This research was conducted on microfinance institutions that had characteristics of close social relations with customers. Further research should be performed on more heterogeneous companies to obtain broader and deeper results in managing NVA and enhancing marketing performance. A new perspective was provided on SDL theory by introducing NVA as an important antecedent in driving service climate and marketing performance
Perceived income stability and financial security among gig workers in Indonesia: a socioeconomic and occupational analysis
Full text linkThe gig economy of flexible, platform-mediated, and task-based work has been reshaping the labour markets of countries worldwide, including Indonesia. Gig workers usually operate without formal contracts or social protection and face unique challenges related to income volatility management and long-term financial planning. This study analyses how gig workers in Indonesia perceive income stability and financial security at the individual level on various socio-economic and occupational dimensions. Based on a crosssectional survey of 1,196 respondents from Java Island, the study uses descriptive statistics, Spearman correlations, Mann-Whitney U tests, and Kruskal-Wallis analyses to identify behavioral and structural determinants of financial perceptions. A strong positive correlation is detected between perceived financial security and income stability; however, it varies remarkably in selected income brackets, savings behavior, work tenure, bonus frequency, and debt sources. Urban freelancers, especially those in Jakarta, report higher financial confidence compared to rural service-sector workers. The study will point out the role of financial literacy, platform incentives, and regional infrastructure in shaping economic resilience. Centering the lived experiences of gig workers themselves, this paper contributes to policy discussions on the regulation of digital labour and social protection in Indonesia’s evolving gig economy
Housing price, bank credit, and firm innovation investment: theory and evidence from China
Full text linkThis paper develops a novel theoretical model to explore the impact of housing price appreciation on firm innovation investment and its interaction with bank lending. The predictions of the model are empirically tested using a comprehensive dataset of China’s A-share listed companies and 94 cities over the period 2011–2021. The findings provide robust evidence of a crowding-out effect, where rising housing prices negatively affect firm innovation investment. Moreover, the crowding-out effect is found to be less pronounced for firms with stronger debt repayment capabilities, superior R&D capabilities, or in tighter credit environments, consistent with the theoretical predictions. Further analysis indicates that the crowding-out effect becomes significant only when banks show a stronger preference for providing short-term loans or exhibit lower service efficiency. In terms of firm innovation outcomes, housing price appreciation generally reduces innovation efficiency, and this negative impact is especially pronounced for lower-quality innovation projects.
First published online 19 November 202
Changes in food demand in the EU member states and selected OECD countries: the impact of disposable income, unemployment, and inflation
Full text linkThis study focuses on consumption patterns: as societies get richer, their attitude toward the level and structure of consumption changes. Unemployment and inflation might influence consumption patterns. This paper aims to analyze the impact of unemployment and inflation on the convergence of food demand in households in the EU Member States and selected OECD countries from 1995 to 2019. The analysis of β-conditional convergence proved that the convergence of the share of food expenditure was positively conditioned by the unemployment level and negatively by the disposable income, but with no inflation influence. While in club convergence of more developed economies, with a higher inflation level comes a higher share of disposable income spent on food.
First published online 27 November 202
Developing creativity in preschool children with behavioural and/or emotional difficulties: experiences of teachers
Full text linkOne of the fundamental goals of education is to recognise a child’s creative abilities and to create conditions for acquiring and expanding these competences. The success of education of children with behavioural and/or emotional difficulties highly depends on the education system’s ability to provide inclusive, high-quality education and services, as well as create an environment that meets the individual needs of each learner. It is relevant to find positive attitudes within the educational community, teachers’ willingness to work, and the ways to develop creativity in children with behavioural and/or emotional difficulties. This article explores teachers’ experiences of creativity development for preschool children with behavioural and/or emotional difficulties. The research method employed was semi-structured interviews with eight preschool teachers who have experience working with children with behavioural and/or emotional difficulties. The findings of the study have revealed that important factors in the education of children include: a creative teacher, democratic relationships among the participants in the educational process, a safe environment, and motivating the child to be creative; barriers to creativity are related to the child’s lack of self-confidence and negative reactions or criticism from adults; creativity of preschool children with behavioural and/or emotional difficulties is most stimulated by providing support, respect, encouragement, and privacy; the most frequent ways of fostering creativity in preschool children are through the activities of art, music, dance, drawing, etc. The results of the study are important in the context of inclusive education and point to directions for further research on the possibilities of creativity development
Developing a data-driven failure decision-making framework for sustainable urban water management projects
Full text linkSeveral degradation factors significantly impact the durability of water pipes in urban areas. However, limited research has comprehensively prioritized these factors to support data-driven maintenance and renewal decisions. Addressing this gap, this study identifies and ranks the failure factors affecting water pipeline infrastructure. A survey of 125 Egyptian water industry experts was conducted, and the collected data were analyzed using partial least squares-structural equation modeling as the decision-making framework. By incorporating insights from previous research and expert opinions, the research developed a robust failure decision-making model that provided significant insights into the primary factors contributing to water pipeline failures. Model analysis revealed that the “operational factor”, with an impact value of 0.543, was the most critical group of factors affecting pipeline failure. Following closely with an impact value of 0.480, was the “static factor”. Natural disasters (0.373), climate and weather conditions (0.325), and soil conditions (0.300) also contributed considerably. Following closely were “dynamic loads” (0.276), “aging and environmental factors” (0.250), and “third-party factors” (0.200), which had the least impact on the failure of the pipeline. This study has developed a novel failure decision-making model by synthesizing insights from previous studies, expert opinions, and empirical data on water pipeline failure.
Does green human resources management pay off? The mediating role of green innovation and employee attitude in sustainable supply chain management
No full textThis research demonstrates that the relationship between Green Human Resource Management (GHRM) practices and Sustainable Supply Chain Management (SSCM) performance is mediated by organizational capabilities rather than a direct process, and this effect is supported by the Resource-Based View (RBV).
Research methodology – For the study, data were collected from a total of 476 participants from 71 companies operating in the textile sector and engaging in green management processes in the Southeastern Anatolia Region of Turkey. The significant role the region plays in machine-made carpet production was a key factor in this selection.
Findings – It has been observed that GHRM enhances a company’s product and process in- novation capacity; it also reveals a critical distinction between the impacts of different innovation types. Process innovation plays a strong role in enhancing environmental performance through internal improvements. Additionally, it has been observed that concern is a stronger motivator than knowledge in achieving sustainability goals.
Research limitations – The cross-sectional design of the study limits definitive proof of causal relationships between variables, it is recommended that future studies utilize longitudinal de- signs that can monitor the long-term effects of GHRM.
Practical implications – The social aspect of sustainability in SSCM can be achieved by visible product innovations. Additionally, the perception gap between senior management and operational employees has been identified as the primary obstacle to implementing sustainability strategies. It has been emphasized that addressing this gap requires mobilizing emotional concern, a driving force stronger than purely cognitive knowledge.
Originality/Value – This study brings together a detailed model by examining the effect of GHRM on SSCM relationship mediated by different innovation and attitude types simultaneously. This gives a more nuanced and applicable information.
Re-iterated approximation methods for nonlinear Volterra integral equations
No full textIn this article, the Newton-iteration scheme based upon iterated Galerkin operator is applied for solving non-linear Volterra Urysohn integral equations of the second kind for smooth and weakly singular kernels. A one step of improvement by iteration to the Galerkin method, named as iterated Galerkin method is a well discussed method and it gives improved convergence rates than Galerkin method. But if we iterate them one more time, then there is no guarantee that we get any improved convergence rates. The proposed Newton-iteration scheme based upon iterated Galerkin operator ensures improved convergence rates at every step of iteration. Specifically, we establish that the convergence rate in iterated Galerkin method increases by O(hr) for smooth kernel, and O(h1−α) for weakly singular kernel, in each step of reiteration, where h is the norm of the partition. Numerical examples are provided to justify the reliability and efficiency of the proposed technique
Improved method for determining rheological parameters of composite materials during creep under torsional deformation
No full textThis paper presents an improved method for determining rheological function parameters of viscoelastic-plastic materials, demonstrated through creep under torsional deformation. The approach is based on the heredity theory (Boltzmann’s principle), using curve fitting to identify parameters (A, α, and β). The improved method from previous studies uses precise graph construction via computational tools, with curve alignment performed using a least square–like approach. An extended database of theoretical rheological function graphs and tables, developed from complex mathematical models and prior research, was employed in the analysis. Importantly, the study highlights that modern aircraft structures, where a significant portion of elements are made of advanced composite materials, are exposed during flight to complex, time-dependent loading conditions. Under these conditions, creep phenomena may develop within structural components, leading to residual deformations and gradual degradation of mechanical properties over time. Even with initially high safety margins, such effects can eventually cause the failure of critical elements after prolonged operation. Therefore, the presented method provides a scientific and practical tool for assessing and predicting the long-term viscoelastic–plastic behavior of aviation composites, ensuring structural integrity, flight safety, and an extended operational lifetime of aircraft