VGTU Journals (Vilnius Gediminas Technical University - Vilnius Tech)
Not a member yet
12536 research outputs found
Sort by
Global advancements in BIM-based building e-permit system adoption: a review
No full textGlobally, several countries have begun to promote the application of building information modeling (BIM) technology and implement BIM-based building e-Permit systems. Despite the relatively rapid updates in the field of BIM-based building e-Permit systems, currently a lack of systematic sorting and summarization exists. This review evaluates the situation of seven representative countries from three aspects: the current adoption status of the BIM-based building e-Permit system, adoption background (BIM-related policy, roadmap, standards, and guidelines), and a future development plan for digital construction. These three aspects are analyzed, common measures across these countries are summarized. Four viewpoints are extracted for promoting BIM-based building e-Permit system adoption, which are mandatory policy orientation, standardization, internationalization, and intelligence. Finally, as the integration of AI into BIM-based building e-Permit systems is a recent research trend, this study also investigates existing research, highlights bottlenecks and points out future directions for AI integration
Assessing the progress of EU countries towards achieving the Sustainable Development Goals
No full textThis study evaluates the extent to which European Union countries are meeting the Sustainable Development Goals (SDGs). It analyses a range of factors to measure the progress being made. The research pays attention to areas such as reducing poverty, promoting gender equality and examining labour markets. The AHP (Analytic Hierarchy Process) method was utilised to determine the importance of the indicators, while the COPRAS method was applied to evaluate and rank the countries according to the effectiveness of their sustainable development policies. The data indicated that Finland, Denmark, and Sweden are at the leading positions in implementing sustainable development, whereas Germany and Spain show less favourable results. The analysis also showed that the main factors impacting sustainable development are the risk of poverty, the gender unemployment gap and long-term unemployment.
Article in English.
ES šalių pažangos vertinimas siekiant tvarios plėtros tikslų
Santrauka
Šiame tyrime vertinama, kiek Europos Sąjungos šalys įgyvendina tvaraus vystymosi tikslus (TVT). Jame analizuojami įvairūs veiksniai, leidžiantys įvertinti padarytą pažangą. Tyrime dėmesys skiriamas tokioms sritims kaip skurdo mažinimas, lyčių lygybės skatinimas ir darbo rinkų tyrimas. AHP (analitinis hierarchinis procesas) metodas buvo taikomas rodiklių svarbai nustatyti, o COPRAS metodas – šalims vertinti ir reitinguoti pagal jų tvaraus vystymosi politikos veiksmingumą. Duomenys rodo, kad Suomija, Danija ir Švedija yra pirmaujančios tvaraus vystymosi įgyvendinimo srityje, o Vokietija ir Ispanija rodo mažiau palankius rezultatus. Analizė taip pat parodė, kad pagrindiniai veiksniai, darantys įtaką tvariai plėtrai, yra skurdo rizika, lyčių nedarbo skirtumas ir ilgalaikis nedarbas.
Reikšminiai žodžiai: tvarus vystymasis, TVT, skurdas, lyčių nelygybė, nedarbas, korupcija, socialiniai ir ekonominiai rodikliai
Possibilities of quantitative assessment of the state of activities of science and technology parks
No full textScience and technology parks (STP) play a special role in the knowledge-based economy. An STP is a place where scientific ideas and thoughts are transformed into products and services. As socio-economic systems, they create a basis for the development of start-ups, knowledge transfer, cooperation between enterprises and scientific institutions and, thus, the commercialization of innovations and other research results. For this reason, the focus of STP functioning is the object of scientific research. On the other hand, there are enough unresolved issues. In most cases, individual aspects of STP activities are upset. There is a lack of research related to the assessment of park activities in a comprehensive, systemic manner. Without a general indicator, it is impossible to compare the activities of individual STPs, it is impossible to study their impact on the performance of enterprises, etc. The aim of the article is to develop a methodology for a comprehensive quantitative assessment of the activities of scientific and technological progress and to test it using the example of parks in Poland
IOT-enabled framework for monitoring carbon emissions in the materialization phase of modular integrated construction
No full textThe potential of Modular Integrated Construction (MiC) to reduce carbon emissions (CEs) has led to increased attention on developing rigorous monitoring systems. Existing methods predominantly capture CEs of isolated MiC stages, overlooking nuances of arrangeable and reusable activities, thus hindering effective CE control measures. To overcome this limitation, this study develops an Internet of Things (IoT)-enabled framework for monitoring CEs of MiC, specifically focusing on the materialization phase, integrating across various MiC stages and facilitating detailed monitoring of CEs associated with arrangeable and reusable activities. This study builds up a CE measurement model tailored to the MiC materialization phase, providing a computational basis for a subsequent monitoring framework. By leveraging IoT technology, the framework is evaluated through case studies to confirm its feasibility and efficacy. The results indicate that the framework enabled improved monitoring capabilities, and the CEs of many MiC activities are successfully integrated into the system. The case study analysis demonstrates that the system\u27s feedback-driven adjustments achieved a CE reduction of 732.04 metric tons
Housing price, bank credit, and firm innovation investment: theory and evidence from China
No full textThis 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
No full textThis 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
Gamification and its impact on improving training and business innovation processes
No full textThe aim of this study was to analyze the impact of gamification on employee motivation and engagement in business innovation processes. A systematic literature review (SLR) was conducted, including 55 articles retrieved from the Scopus database, following the PRISMA statement guidelines. Inclusion and exclusion criteria were applied to ensure the relevance and quality of the reviewed studies. Regarding materials and methods, a specific search equation was used to identify articles addressing the relationship between gamification and productivity in the workplace. Key data were extracted from the selected articles, including information on the study population, the gamification techniques implemented, and the observed benefits. The findings were categorized to identify recurring patterns and themes. Results showed that gamification enhances employee motivation and engagement, thereby improving business innovation processes. Various gamification techniques were identified as effective, along with contextual factors that influenced outcomes. The review also highlighted the need to tailor gamification strategies to maximize their benefits. It is concluded that this work provides a critical overview of the current state of knowledge in the field of gamification and its application in business innovation. Areas requiring further research were identified, suggesting that gamification can be a valuable tool for improving productivity and creativity within organizations
A second order method for a drug release process defined by a differential Maxwell-Wichert stress-strain relation
No full textPolymeric drug delivery platforms offer promising capabilities for controlled drug release thanks to their ability to be custom-designed with specific properties. In this paper we present a model to simulate the complex interplay between solvent absorption, polymer swelling, drug release and stress development within these platforms. A system of nonlinear partial differential equations coupled with an ordinary differential equation is introduced to avoid drawbacks from other models found in the literature. These incorporated a memory effect but from a numerical standpoint, required storing all previous time steps, making them computationally expensive. This paper proposes a new numerical method to simulate such devices based on nonuniform grids and an implicit midpoint time discretization. Our main results are the second order convergence of the method for nonsmooth solutions and the scheme’s stability under the assumption of quasiuniform grids and a small enough timestep
Weak solutions to degenerate p(t)-Laplacian elliptic equations involving (q, r(t)) double phase Hardy terms
No full textThis paper is devoted to establishing novel existence criteria for weak solutions to a class of weighted quasilinear degenerate elliptic equations featuring double phase Hardy-type singular coefficients. These types of problems are rarely discussed in variable exponent Sobolev spaces in previous work. We prove the existence of at least one and at least two weak solutions via variational methods and critical point theory, under appropriate assumptions on the weight function and the nonlinearity
Does fiscal and financial green policy coordination curb corporate “greenwashing”? Evidence from the green loan interest subsidies policy in China
No full textAmidst the push for green development, finding ways to effectively coordinate fiscal and financial policies to curb corporate “greenwashing” has emerged as a crucial issue to investigate. Using data from non-financial listed firms in China from 2011 to 2022, this study employs a multi-period difference-in-differences model, treating the green loan interest subsidies (GLIS) policy as a quasi-natural experiment to examine its impact on “greenwashing”. We find that the GLIS policy significantly suppresses corporate “greenwashing.” GLIS policy not only stimulates bank credit supply and increases the scale of green credit, but also motivates banks to strengthen their risk identification mechanisms, thereby curbing “greenwashing.” The inhibitory effect is more pronounced in firms with high financing constraints, low transparency in environmental management systems, and heavy pollution firms. Moreover, GLIS policy can synergize fiscal and financial policies, addressing the deficiencies of individual policies and enhancing their practical effectiveness in green governance. Overall, our results verify the inhibitory effect of the GLIS policy on “greenwashing,” providing evidence and useful insights for China and other countries or regions to promote coordinated green policies between fiscal and financial sectors.
First published online 20 October 202