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Found 6374 publications

Assessment of combined high-speed passenger and freight train movement to mitigate environmental impact

Szabolcs Fischer Mykola Kurhan Dmytro Kurhan Nelya Hmelevska

Publication Name: Iop Conference Series Earth and Environmental Science

Publication Date: 2025-01-01

Volume: 1491

Issue: 1

Page Range: Unknown

Description:

The purpose of the study is to investigate the primary reasons for the feasibility of the combined movement of high-speed passenger and freight trains. The research includes the analysis and theoretical synthesis of materials related to the combined movement of high-speed passenger and freight trains in European Union countries. The combination of different train categories on high-speed rail lines is not only possible but also, under certain conditions, advisable. The main reasons for arranging sections of combined passenger and freight movement include overcoming contour or height obstacles and justifying investments in the construction of high-speed railways where the demand for passenger transportation is insufficient and profitability is ensured through additional income from cargo transportation. The combined movement of high-speed passenger and freight trains can reduce environmental impact by ensuring the efficient use of railway infrastructure and decreasing transport emissions. The authors have proposed a comprehensive approach to assessing the effectiveness of implementing the movement of high-speed passenger and accelerated freight trains, considering the net present value and ensuring the capacity of the double-track railway line during concurrent train movements. The research results enable enhancing the stability of railway transportation on high-speed railways.

Open Access: Yes

DOI: 10.1088/1755-1315/1491/1/012023

Relationships Between Body Attitude, Loneliness, Problematic Smartphone Use, and Associated Feelings of Deprivation

Nadia Bevan Paolo Soraci Lorenzo Campedelli Angéla Somogyi Tifani Pálmai Attila Szabo

Publication Name: Journal of Technology in Behavioral Science

Publication Date: 2025-01-01

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

Problematic smartphone use (PSU) is an increasing global concern, particularly among young people, and emotional factors can play a crucial role in PSU. This study investigated the relationships between loneliness, body attitudes, PSU, and smartphone deprivation (withdrawal) feelings using a structural equation modeling (SEM) approach. A total of 697 Hungarian participants (74.8% female, Mage = 23.51 ± 7.26) completed the Smartphone Application-Based Addiction Scale, the Loneliness Scale, the Body Attitude Test, the Smartphone Withdrawal Symptom Scale, and demographic questions. The results revealed that loneliness was positively related to PSU and smartphone deprivation, with body attitude mediating these relationships. Age was a protective factor since older individuals reported less PSU and feelings of deprivation. While an alternative non-mediated model yielded a comparable fit, the mediated model provided a more thorough perspective. Overall, the findings suggest a potentially vicious cycle in which loneliness, negative body attitude, and PSU reinforce one another, with feelings of smartphone deprivation further exacerbating PSU. This cycle not only deepens psychological distress but also underscores the urgent need for targeted interventions to enhance body image and social well-being as a means of mitigating PSU. Given the broader implications, further empirical research, particularly cross-cultural validation, is essential to ensure the findings apply across diverse populations and inform globally relevant strategies.

Open Access: Yes

DOI: 10.1007/s41347-025-00540-z

Assessment of ecotourism potential in rural settlements in the function of rural development

Dragan Pamucar Darko Božanić Adis Puška Miroslav Nedeljković Anđelka Štilić

Publication Name: Cogent Social Sciences

Publication Date: 2025-01-01

Volume: 11

Issue: 1

Page Range: Unknown

Description:

To preserve resources for future generations and promote rural development, supporting ecotourism is essential. This paper provides guidelines for developing ecotourism, highlighting its role in environmental conservation. While mass tourism benefits rural communities, it can cause significant environmental harm. Therefore, this research promotes ecotourism as a sustainable alternative. In rural areas, ecotourism supports development by responsibly using natural resources. The study focuses on the potential of rural settlements in the Semberija region of Bosnia and Herzegovina, assessing their capacity for ecotourism to aid local development. A decision model was developed, considering four main criteria - natural, infrastructure, socio-cultural, and economic - and their sub-criteria. This model evaluates six rural communities’ ecotourism potential. To determine the importance of each criterion, a fuzzy weighting method with the Bonferroni mean operator was used, revealing economic factors as the most influential. The fuzzy ranking method then ranked the settlements, with Amajlije identified as having the highest ecotourism potential. The findings suggest that promoting ecotourism in Amajlije and similar communities can support sustainable rural development, balancing environmental preservation with economic growth.

Open Access: Yes

DOI: 10.1080/23311886.2025.2569756

Scenario-Based Optimization of Public Service Workflows Using Control Theory and P-graph Methodology

Boglárka Eisingerné Balassa László Buics Boglárka Eisinger

Publication Name: Chemical Engineering Transactions

Publication Date: 2025-01-01

Volume: 120

Issue: Unknown

Page Range: 403-408

Description:

Administrative workflows in public services, such as university enrolment are increasingly recognized as complex systems characterized by nonlinear dynamics, interdependencies, and variable operational constraints. These characteristics often lead to inefficiencies in resource allocation and compromise process sustainability. This study develops a novel control-theoretic optimization framework that integrates feedback, adaptive, and predictive control strategies with the P-graph methodology to address these challenges. The proposed approach models enrollment workflows using system dynamics and P-graph-based network optimization, enabling structured representation, real-time control, and scenario-based decision-making. To assess sustainability and efficiency, the model simulates varying scenarios of student demand, digital transformation levels, and administrative capacity. Key performance indicators (KPIs) such as resource utilization, delay reduction, and process flexibility are used to evaluate the comparative effectiveness of Model Predictive Control (MPC), discrete-event control, and feedback control strategies. Results show that optimized scenarios achieved a 50 % reduction in CO2 emissions and over 2 h reduction in average processing time, significantly improving sustainability. This research uniquely applies control-theoretic methods to public administration and extends the P-graph methodology beyond industrial domains. The outcome is a scalable decision-support framework for policymakers aiming to enhance the resilience and sustainability of administrative service processes under dynamic conditions.

Open Access: Yes

DOI: 10.3303/CET25120068

Toward a Theoretical Framework for Digital Twin Readiness Assessment in Logistics: Conceptualization and Model Development †

László Buics Lahiru Vimukthi Bandara

Publication Name: Engineering Proceedings

Publication Date: 2025-01-01

Volume: 113

Issue: 1

Page Range: Unknown

Description:

Digital Twins provide comprehensive capabilities to solve critical logistics problems such as visibility, monitoring, optimization, prediction, and simulation. This study explores the existing DT readiness assessment models in SCs and logistics, discovers their limitations, and proposes a conceptual model based on an organization’s internal and external attributes to strategize DT implementation in logistic functions. The results showed that the existing readiness assessment models have weaknesses and drawbacks, motivating the researchers to develop a new logistic DT readiness assessment model. This study identified six main organizational dimensions directly affecting measuring overall logistics’ DT readiness, which are management readiness, personnel readiness, information readiness, organization readiness, product readiness, and process flow readiness. Their relationship is mediated by Technology Integration and moderated by Supply Chain Complexity, which was tested using partial least squares structural equation modeling to show the importance of strategizing DT implementation in logistics.

Open Access: Yes

DOI: 10.3390/engproc2025113066

A new remarkable representative of Uropodina mites from Seychelles (Acari, Mesostigmata, Trematuridae)

Sergey G. Ermilov Jenő Kontschán

Publication Name: Zookeys

Publication Date: 2025-01-01

Volume: 1229

Issue: Unknown

Page Range: 289-296

Description:

A new genus, Trematirunella gen. nov. (Mesostigmata: Uropodina: Trematuridae), with Trematirunella seychellia sp. nov. as its type species, is described, based on a female, males, and deutonymphs collected in soil samples from the Seychelle Islands. The new genus belongs to the family Trematuridae based on the shape of the corniculi, gnathosomal setae, tritosternum and chelicerae. Members of the new genus bear a preanal suture on the ventral shield, two pairs or more pairs of wide, robust and sword-like setae on the caudal part of the dorsal shield, very dense setation on the caudal area of the marginal shield and an incision on the anterior part of the dorsal shield. These characters are missing in the other genera of Trematuridae. Two previously described species (Trichouropoda lagunae Hirmatsu & Hirschmann, 1988 and Trichouropoda palawanensis Hirschmann & Hirmatsu, 1990) from the Philippines are transferred to the new genus, as Trematirunella lagunae (Hirmatsu & Hirschmann, 1988), comb. nov. and Trematirunella palawanensis (Hirschmann & Hirmatsu, 1990), comb. nov. The new species differs from its congeners in the sculptural pattern of the female genital shield and in the shape of the robust and sword-like setae on the caudal area of the dorsal shield.

Open Access: Yes

DOI: 10.3897/zookeys.1229.142822

The Extension of the Triple Fuzzy Time Dependent Travelling Salesman Problem Model, with a Discrete Bacterial Memetic Optimization Algorithm

Boldizsar Tuu-Szabo Ruba Almahasneh Laszlo T. Koczy

Publication Name: Acta Polytechnica Hungarica

Publication Date: 2025-01-01

Volume: 22

Issue: 5

Page Range: 71-91

Description:

The Traveling Salesman Problem (TSP) is one of the most often studied NP-hard graph search problems. There have been numerous publications in the literature that applied various approaches to find the optimum or semi optimum solution. Although the problem is computationally intractable, but the Time Dependent Traveling Salesman Problem (TD TSP) is one of the most realistic extensions of the original TSP problem. In the TD TSP, the costs of edges between nodes vary, namely, they are assigned higher costs if they crossed a predefined oblong shaped area (to represent the jam region in the city center). Realizing that the jam regions and the rush hours costs on a tour are uncertain and can never be accurately represented by concrete numbers, we introduced the novel 3FTD TSP (Triple Fuzzy Time Dependent Traveling Salesman Problem); a fully fuzzified model of the original TD TSP. The 3FTD TSP utilizes fuzzy values for determining the costs between any two nodes within the traffic jam regions and during the rush hours periods more precisely. In this paper, we extend the 3FTD TSP further and apply it on the biggest universal instances in the literature in pursuit of testing the generality and applicability of the 3FTD TSP on real-life scenarios. To support the claim of the model’s efficiency, we propose the application of the DBMEA (Discrete Bacterial Memetic Evolutionary Algorithm), as a meta-heuristic and the classic GA (Genetic Algorithm) enabling the reader to compare the accuracy and the speed of (quasi-) optimum solutions convergence.

Open Access: Yes

DOI: 10.12700/aph.22.5.2025.5.4

The effects of different carbon-fiber plate shapes in shoes on lower limb biomechanics following running-induced fatigue

Yaodong Gu Dong Sun Yang Song Zhenghui Lu Yufei Fang Yufan Xu Chengyuan Zhu Chen Hu

Publication Name: Frontiers in Bioengineering and Biotechnology

Publication Date: 2025-01-01

Volume: 13

Issue: Unknown

Page Range: Unknown

Description:

Different shapes of carbon-fiber plates (CFPs) are likely to affect lower limb biomechanics, particularly under conditions of running-induced fatigue, and potentially impact runners’ performance and risk of injury. However, no studies have yet elucidated the precise effects of CFP shapes on the lower limb biomechanical characteristics subsequent to running-induced fatigue. The purpose of this study was to investigate the effects of different CFP shapes in running shoes on the lower limb biomechanics of runners following running-induced fatigue. 12 male runners (aged 21.8 ± 1.3 years, mass 59.1 ± 4.1 kg, height 168.9 ± 2.2 cm, weekly running distance 68.8 ± 5.5 km/week) were recruited for this study. Two-way repeated measures ANOVA was used to compare kinematic and kinetic data, while SPM (Statistical Parametric Mapping) was used to assess the activation levels of lower limb muscles. Compared to wearing flat CFP shoes (“Flat”), wearing curved CFP shoes (“Curve”) resulted in a significant reduction in the hip (p = 0.034) and knee contact angle (p < 0.000), as well as a significant decrease in the hip flexion moment (p = 0.008). The activation level of the tibialis anterior (TA) was significantly higher when wearing “Curve” in pre-fatigue compared to “Flat”, whereas the opposite was observed post-fatigue. The curved CFP altered the bending angle of the forefoot, thereby significantly reducing the joint angles and joint moments of the hip and knee.

Open Access: Yes

DOI: 10.3389/fbioe.2025.1539976

Communication and Academic Work Generate Good Practices

Tibor Dőry Susana Pérez Milicua Mendoza

Publication Name: Latin American Perspectives on Innovation in Higher Education A Multidisciplinary Approach

Publication Date: 2025-01-01

Volume: Unknown

Issue: Unknown

Page Range: 105-116

Description:

This chapter delves into the significance of effective communication and academic endeavors within the educational landscape, highlighting its relationship to emerging technologies and pedagogy. It investigates the influence of educational platforms, innovation, and information technologies on enhancing the quality of education, exemplified by a case study conducted at Széchenyi István University in Hungary. The methodology employed in the project is examined, emphasizing the crucial role of communication in achieving success.

Open Access: Yes

DOI: 10.1007/978-3-031-96751-1_9