Search in Publications

Found 6407 publications

Regulatory Risk in Green FinTech: Comparative Insights from Central Europe

András Lapsánszky Michal Janovec János Kálmán Anna Zalcewicz Simona Heseková

Publication Name: Risks

Publication Date: 2026-01-01

Volume: 14

Issue: 1

Page Range: Unknown

Description:

Green fintech merges sustainable finance with data-intensive innovation, but national translations of EU rules can create regulatory risk. This study examines how such risk manifests in Central Europe and which policy tools mitigate it. We develop a three-dimension framework—regulatory clarity and scope, supervisory consistency, and innovation facilitation—and apply a comparative qualitative design to Hungary, Slovakia, Czechia, and Poland. Using a common EU baseline, we compile coded national snapshots from primary legal texts, supervisory documents, and recent scholarship. Results show material cross-country variation in labelling practice, soft-law use, and testing infrastructure: Hungary combines central-bank green programmes with an innovation hub/sandbox; Slovakia aligns with ESMA and runs hub/sandbox, though the green-fintech pipeline is nascent; Czechia applies a principles-based safe harbour and lacks a national sandbox; and Poland relies on a virtual sandbox and binding interpretations with limited soft law. These choices shape approval timelines, retail penetration, and cross-border portability of green-labelled products. We conclude with a policy toolkit: labelling convergence or explicit safe harbours, a cross-border sandbox federation, ESRS/ESAP-ready proportionate disclosures, consolidation of recurring interpretations into soft law, investment in suptech for green-claims analytics, and inclusion metrics in sandbox selection.

Open Access: Yes

DOI: 10.3390/risks14010008

Risk Assessment and Response Prioritization for Railway Tunnels Using Integrated Fuzzy FMEA, CRITIC, and Fuzzy MARCOS Methods

Szabolcs Fischer Amir Hajimirzajan Milad Kazemian Ebrahim Hadizadeh Raeisi Ahmad Davari Ghezelhesar

Publication Name: Acta Polytechnica Hungarica

Publication Date: 2026-01-01

Volume: 23

Issue: 1

Page Range: 249-269

Description:

This study presents a comprehensive framework for assessing and prioritizing risks associated with railway tunnels, focusing on the Tehran-North railway in Iran. By integrating fuzzy Failure Modes and Effects Analysis with fuzzy Measurement of Alternatives and Ranking according to the Compromise Solution and fuzzy Criteria Importance Through Intercriteria Correlation methodologies, the research provides a robust multi-criteria approach to evaluate key risk factors such as seismic hazards, water ingress, and structural deformations. The analysis emphasized proactive mitigation strategies like seismic retrofitting and advanced monitoring systems, identifying tunnels at 243, 236, and 260 km as high priorities due to significant accident records. Additionally, tunnels at lower elevations were particularly vulnerable to flooding, landslides, and seismic hazards. This research enhances infrastructure risk management by offering actionable insights for resource allocation and retrofitting strategies while setting a foundation for real-time monitoring and artificial intelligence-driven models.

Open Access: Yes

DOI: 10.12700/APH.23.1.2026.1.15

Catalogue of trachyuropodid mites (Acari: Mesostigmata: Uropodina: Trachyuropodidae) of the world, with the description of Trachyibana kozari n. sp. from Singapore

Sergey G. Ermilov Jenő Kontschán

Publication Name: Acta Phytopathologica Et Entomologica Hungarica

Publication Date: 2023-06-01

Volume: 58

Issue: 1

Page Range: 18-50

Description:

All known trachyuropodid mites (Acari: Uropodina: Trachyuropodidae) are listed together with diagnoses of the family Trachyuropodidae and trachyuropodid genera. A new illustrated key to trachyuropodid genera is also presented. The second species of the genus Trachyibana (T. kozari sp. nov.) is described and illustrated from Singapore. Forty eight new combinations are also presented: Arculatatrachys darwini (Kontschán and Starý, 2013) comb. nov.; Arculatatrachys newtoni (Kontschán, 2010) comb. nov.; Bostocktrachys berlesesellnickia (Hirschmann, 1976) comb. nov.; B. extremica (Kontschán and Starý, 2013) comb. nov.; B. kiewensis (Hirschmann, 1976) comb. nov.; B. myrmecophila (Wiśniewski and Hirschmann, 1992) comb. nov.; B. plagiata (Hirschmann, 1976) comb. nov.; B. zicsii (Hirschmann, 1976) comb. nov.; Castritrachys quadriauricularia (Hirschmann, 1976) comb. nov.; Cristicepstrachys sinuata (Berlese, 1904) comb. nov.; Cephalojanetia multituberculata (Hirschmann, 1976) comb nov.; C.Tuberosa (Hirschmann, 1976) comb. nov.; C. dentata (Kontschán, 2007) comb. nov.; Cephalouropoda alapaducta (Hirschmann, 1976) comb. nov.; Excavatatrachys auricularia (Costa, 1962) comb. nov.; E. longicornuta (Hirschmann, 1976) comb. nov.; E. longicornutasimilis (Hirschmann, 1976) comb. nov.; E. poppi (Hirschmann and Zirngiebl-Nicol, 1969) comb. nov.; E. quadricornuta (Hirschmann, 1976) comb. nov.; E. sellnicki (Hirschmann and Zirngiebl-Nicol, 1969) comb. nov.; Graecatrachys bali (Kontschán and Starý, 2013) comb. nov.; G. endrodyi (Hirschmann, 1976) comb. nov.; G. ghanaensis (Hirschmann, 1976) comb. nov.; G. mesofovea (Hirschmann, 1976) comb. nov.; G. mesofoveasimilis (Hirschmann, 1976) comb. nov.; G. represa (Hirschmann, 1976) comb. nov.; G. rufipes (Hirschmann, 1976) comb nov.; Magnatrachys dacica (Huţu, 1973) comb. nov.; M. imperforata (Berlese, 1904) comb. nov.; M. mexicana (Hirschmann, 1976) comb. nov.; M. pecinai (Hirschmann, 1976) comb. nov.; M. schusteri (Hirschmann, 1976) comb. nov.; M. schusterisimilis (Hirschmann, 1976) comb. nov.; Trogulotrachys ablesi (Hirschmann, 1976) comb. nov.; T. celtica (Halbert, 1907) comb. nov.; T. hirschmanni (Pecina, 1980) comb. nov.; T. kinsella (Kontschán et al., 2010) comb. nov.; T. michaeli (Ewing, 1909) comb. nov.; T. wasmanniana (Berlese, 1903) comb. nov.; T. willmanni (Hirschmann and Zirngiebl-Nicol, 1969) comb. nov.; Urojanetia baloghi (Hirschmann, 1976) comb. nov.; U. baloghisimilis (Hirschmann, 1976) comb. nov.; U. belunensis (Lombardini, 1962) comb. nov.; U. hexaspinosa (Hirschmann, 1976) comb. nov.; U. mahunkai (Hirschmann, 1976) comb. nov.; U. similicoccinea (Hiramatsu, 1979) comb. nov.; Urotrachytes formicariasimilis (Hirschmann, 1975) comb. nov.; and Ur. ponticuli (Karg, 1989) comb. nov.

Open Access: Yes

DOI: 10.1556/038.2023.00183

Blockchain and sustainable finance as enablers of regenerative finance: a bibliometric and thematic review

Jewel Kumar Roy Heba F. Zaher

Publication Name: Discover Sustainability

Publication Date: 2025-12-01

Volume: 6

Issue: 1

Page Range: Unknown

Description:

Blockchain technology, sustainable finance, and regenerative finance are increasingly intersecting as vital research frontiers in addressing global environmental and social challenges. This study offers a comprehensive bibliometric and thematic analysis of the scholarly landscape at this intersection, aiming to illuminate how these domains are evolving and converging. Drawing on a curated dataset of 78 peer-reviewed articles sourced from Scopus and Web of Science, the research integrates quantitative bibliometric mapping with qualitative thematic insights to capture both the structural and conceptual dimensions of the field. The analysis employs co-word mapping to explore patterns of keyword co-occurrence and identify key intellectual linkages, thematic evolution analysis to track the development of major research themes over time, and factorial correspondence analysis to visualize the relationships among concepts within a multidimensional space. Findings reveal a rapidly growing and increasingly interdisciplinary body of work, with blockchain and sustainable finance serving as central pillars, while regenerative finance, though still emerging, shows strong conceptual potential. Notably, the appearance of AI-related themes suggests a nascent yet promising integration of intelligent systems with sustainability-focused finance. Together, these insights offer a nuanced understanding of the field’s current dynamics and lay the groundwork for future research on regenerative, technology-enabled financial systems.

Open Access: Yes

DOI: 10.1007/s43621-025-02036-5

An accelerated digital CNN-UM (CASTLE) architecture by using the pipe-line technique

P. Keresztes Timót Hidvégi Péter Szolgay

Publication Name: Proceedings of the IEEE International Workshop on Cellular Neural Networks and their Applications

Publication Date: 2002-01-01

Volume: 2002-January

Issue: Unknown

Page Range: 355-362

Description:

Different CNN-UM architecture implementations, analog and emulated digital, were developed. The emulated digital architecture (CASTLE) is accurate but slower than the analog CNN-UMs. It is generally disadvantageous especially if transient computing is critical. The operation speed of the emulated digital implementations, namely CASTLE, can be increased significantly using the pipeline technique. This solution is analyzed with respect to area, time, etc. These arithmetic cores were tested and simulated using a VIRTEX FPGA development system.

Open Access: Yes

DOI: 10.1109/CNNA.2002.1035070

Hospital Admission Classification of Cardiac Patients Utilizing Metaheuristics-Optimized Two Tier Framework

Milos Dobrojevic Nebojsa Bacanin Dragan Pamucar Miodrag Zivkovic Jovan Petrovic Petar Dabic Tamara Zivkovic Vladimir Simic

Publication Name: International Journal of Computational Intelligence Systems

Publication Date: 2026-12-01

Volume: 19

Issue: 1

Page Range: Unknown

Description:

Accurate evaluation of a cardiac patient’s risk at the point of hospital entry is critical for efficient triage and ensuring timely, suitable medical intervention. This study aims to forecast a range of clinical outcomes by leveraging admission data from a cardiac care unit, utilizing a refined and optimized machine learning approach. This research introduces a hybrid architecture that integrates convolutional neural networks (CNNs) with advanced machine learning classifiers, namely light gradient boosting machine (LightGBM) and categorical boosting (CatBoost), further enhanced through metaheuristic optimization techniques to maximize their performance. The proposed two-tiered design organizes feature extraction and final decision modeling into a coherent pipeline tailored for multi-class hospital admission classification. A comprehensive evaluation using a real-world hospital admission dataset demonstrates the framework’s effectiveness on a real-world, publicly available hospital admission dataset, supporting its utility for multi-class cardiac outcome prediction. Three experiments were conducted using publicly available datasets, where the best-performing models achieved a peak classification accuracy of 99.79%. Furthermore, explainable AI techniques were employed to interpret model predictions, offering actionable insights that can guide future data acquisition and strengthen the accurate classification of cardiac patients.

Open Access: Yes

DOI: 10.1007/s44196-025-01127-5

BALANCED FOUND OBJECT RESTORATION OF THE RUINED CHURCH OF SOMOGYSENTPÁL, VARJASKÉR, KŐSZEG, HUNGARY; ARCHITECT: BÁLINT KELEMEN

Arnóth Ádám Ádám Arnóth

Publication Name: Metszet

Publication Date: 2025-01-01

Volume: 16

Issue: 5

Page Range: 50-55

Description:

Highlighting the evolution from historicist restoration to modern conservation, the text focuses on the privately funded ‘Romvándor’ program's innovative work in Hungary. The most notab-le project is the conservation of the medieval Varjaskér church ruin wall. To ensure stability against wind load, a minimalist Corten steel fra-me was inserted to provide structural support, delineate the original arched opening, and disp-lay information. Additionally, the former church's foundation walls were marked using grass-cove-red earth banks. Championing minimal, essential, and architecturally innovative intervention, akin to the Zsámbék precedent.

Open Access: Yes

DOI: 10.33268/Met.2025.5.6

Unraveling the Bäcklund Transformation and Interaction Phenomena in Nonlinear Dispersive Media Describing Combined pKP-BKP System in (3+1) Dimensions

Asma Rashid Butt Muhammad Rafiq Hijaz Ahmad Taha Radwan Beenish Rani Mustafa Bayram

Publication Name: Journal of Nonlinear Mathematical Physics

Publication Date: 2026-12-01

Volume: 33

Issue: 1

Page Range: Unknown

Description:

This work studies the exact solutions of the integrable (3+1)-dimensional combined potential Kadomtsev-Petviashvili (pKP) equation with the B-type Kadomtsev-Petviashvili (BKP) equation, which is used to characterize several nonlinear oscillations occurring in hydrodynamics, plasma physics, and nonlinear optics. A bilinear representation of the pKP-BKP model is used to study the properties of different wave solutions. A variety of ansatzes are utilized to derive lump cross-kink waves, lump cross-periodic waves, rogue waves, as well as two, three, and multi-wave solutions pertinent to the model. In addition, a traveling wave transformation is applied to transform the problem into an ordinary differential equation. The new auxiliary equation methodology yields solutions including rational, exponential, hyperbolic, and trigonometric functions. Graphical visualizations using 2D plots, contour plots, and 3D plots show the dynamics of the obtained solutions. These solutions are of great importance in nonlinear fiber optics and telecommunications, which contribute to our understanding of the fundamental physical models.

Open Access: Yes

DOI: 10.1007/s44198-025-00372-8

Introduction of a New Variable and the Problem of Complexity in Determining Impact Speeds in Vehicle–Pedestrian Accidents

Diána Henézi Csaba József Májer

Publication Name: Periodica Polytechnica Transportation Engineering

Publication Date: 2025-08-15

Volume: 53

Issue: 4

Page Range: 381-388

Description:

Reconstruction and analysis of road traffic accidents represent an inherently complex task. This is especially true for one of the most significant accident categories, vehicle-pedestrian collisions. Forensic traffic and vehicle technical experts must determine the relevant impact speeds in virtually all cases, based on a wide variety of objective traces. The most relevant evidence and information can be obtained on-site within a limited period following the occurrence of the accident. These indispensable sources of information cannot be reproduced later or can only be reproduced to a very minimal extent. Therefore, it is essential to uncover as many traces at the accident site as possible and as soon as possible. In certain cases, the so-called rapid expert calculations may need to be performed on-site. In this paper, we seek solutions related to these rapid calculations and to facilitating the determination of speeds that play a critical role in vehicle-pedestrian accidents. The proposed approach may simplify the daily work of forensic traffic and vehicle technical experts.

Open Access: Yes

DOI: 10.3311/PPtr.40813