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Publications - 6374

Stochastic Breather and Soliton Dynamics of a Third-Order Complex mKdV (Higher-Order NLS-Type) Equation

Hadi Rezazadeh Younis A. Sabawi Hijaz Ahmad Taha Radwan Li Ming

Publication Name: Journal of Nonlinear Mathematical Physics

Publication Date: 2026-12-01

Volume: 33

Issue: 1

Page Range: Unknown

Description:

This study presents a comprehensive investigation of optical solitary waves governed by a third-order complex modified Korteweg-de Vries (higher-order nonlinear Schrödinger-type, mKdV-NLS) equation incorporating stochastic effects. Initially, the methodology outlines the general procedure of this approach. Subsequently, by applying the traveling waves transformation to the given equation, it is reformulated into nonlinear ordinary differential equations (NLODEs). These NLODEs are then decomposed into their imaginary and real components. Furthermore, the proposed methodology is implemented to derive new solutions for optical solitary waves within the mKdV-NLS type model, encompassing stochastic breather-like waves, singular solitons, periodic waves, and various wave interactions. Additionally, numerical visualizations of the exact analytical solitary waves are provided, facilitating an examination of the stochastic term’s influence on wave dynamics. This study advances the understanding of optical wave behavior and clarifies the effects of stochastic contributions, offering valuable insights for both theoretical studies and practical applications in optics and related fields.

Open Access: Yes

DOI: 10.1007/s44198-025-00367-5

A Localized Multi-level Method of Fundamental Solutions for Inhomogeneous Problems

Csaba Gáspár

Publication Name: Lecture Notes in Computational Science and Engineering

Publication Date: 2025-01-01

Volume: 153 LNCSE

Issue: Unknown

Page Range: 345-354

Description:

A localization technique is proposed to solve some elliptic problems based on the classical Schwarz overlapping method. The original problem is converted to solving a sequence of subproblems (which are much less than the original problem) resulting in an iterative method. The local problems are solved by the Method of Fundamental Solutions. The localization technique makes it possible to apply the method to inhomogeneous problems and to more general problems as well. The method can be embedded into a natural multi-level context, which significantly improves the computational efficiency. As a further application, the proposed method is applied to the scattered data interpolation problem.

Open Access: Yes

DOI: 10.1007/978-3-031-86173-4_35

Anthropometric Determinants of Rowing Performance in a Multinational Youth Cohort

Ferenc Ihász László Suszter Ottó Benczenleitner Zoltán Gombos Zoltán Alföldi

Publication Name: Journal of Functional Morphology and Kinesiology

Publication Date: 2026-03-01

Volume: 11

Issue: 1

Page Range: Unknown

Description:

Background: Rowing performance in youth athletes is strongly influenced by anthropometric characteristics, body composition, and limb proportions; however, the combined contribution of these factors across developmental stages remains insufficiently understood. This study investigated the relationships between key anthropometric variables and ergometer performance in a multinational cohort of young rowers. Methods: A total of 194 athletes (48 females, 146 males) from ten countries participated. Based on age and sex, participants were categorized into junior female (JF), junior male (JM), adult female (AF), and adult male (AM) groups. Body height, body mass, body fat (F%), relative muscle mass (M%), limb lengths, and body surface area (BSA) were measured. Rowing performance was assessed via maximal 2000 m ergometer trials. Results: Males outperformed females across all age groups (p < 0.001). Performance showed strong positive correlations with body height (r = 0.673, p = 0.003), body mass (r = 0.724, p = 0.005), arm span (r = 0.681, p = 0.002), lower-limb length (r = 0.394, p = 0.004), relative muscle mass (39.9 ± 5.2%; r = 0.531, p < 0.001), and especially BSA (1.94 ± 0.19 m2; r = 0.739, p < 0.001). Relative body fat was negatively associated with performance (17.6 ± 6.9%; r = −0.465, p < 0.001). Conclusions: Findings indicate that rowing performance in youth athletes reflects multidimensional anthropometric configurations rather than isolated traits, characterized primarily by the combined contribution of body surface area, relative muscle mass, and segmental body dimensions. From a practical perspective, higher-performing athletes typically exhibited body surface area values approaching or exceeding ~1.90 m2 and relative muscle mass above ~40%, suggesting these ranges as indicative reference benchmarks rather than fixed selection thresholds. Integrating anthropometric profiling with physiological assessment may enhance early talent identification and support individualized training strategies in competitive youth rowing.

Open Access: Yes

DOI: 10.3390/jfmk11010039

Achieving Sustainability in EU Tenders for Hungarian Universities

Mónika Rajcsányi-Molnár Márta Konczos Szombathelyi Nóra Mária Halmai

Publication Name: Journal of Sustainability Research

Publication Date: 2026-03-01

Volume: 8

Issue: 1

Page Range: Unknown

Description:

The research examines the elements and factors affecting the sustainability conditions of tenders implemented by universities. The actuality of the topic is justified by the strengthening of the universities’ three missions and the emergence of the sustainability aspect, notably its prominent appearance among strategic goals. This study analyzes Hungarian calls for European Union structural funds over two programming periods, focusing on how the conceptual and conditional system of sustainability is integrated to support the Higher Education Institutions (HEIs)’ evolving innovative and third mission role. Regarding the method, the analysis focused on tender documentation from the Széchenyi 2020 (HRDOP) and the strategic guidelines for Széchenyi Plan Plus (EDIOP Plus) (2014–2027). A qualitative content analysis was performed on seven HRDOP calls. Agusdinata’s Human-Centered Design (HCD) and Shared-Action Learning (SAL) framework were utilized to assess the alignment of the calls’ objectives with sustainable development goals (SDGs), particularly concerning the cooperation of the quadruple/quintuple helix actors. The findings indicate that the HRDOP calls’ target system encompasses the elements of the sustainability framework. While sustainability is often indirectly supported, project conditions serve as guidelines for HEIs to undertake SDG-aligned activities. The subsequent EDIOP Plus priorities further emphasize collaboration and cover all framework elements, though relationships with civil society and the educational mission require increased institutional self-contribution. It can be concluded that defining and highlighting these aspects provides guidance during project planning, enhancing the long-term sustainability of university tenders and regional impact.

Open Access: Yes

DOI: 10.20900/jsr20260016

Study of the Negative Work Area in the p-V Diagram of an HCCI Engine †

Cs Tóth-Nagy

Publication Name: Engineering Proceedings

Publication Date: 2024-01-01

Volume: 79

Issue: 1

Page Range: Unknown

Description:

Homogeneously charged compression ignition is a promising combustion process that is proven to increase combustion efficiency and decrease exhaust emissions when compared to Otto or Diesel engine efficiencies and emissions. The HCCI process can be considered an advancement on the path to sustainability. However, improper control of the start of combustion causes the efficiency of the engine to drop significantly. The reason for this efficiency drop is that an early start of combustion causes the piston on the upward stroke to experience increased cylinder pressure after the combustion process is complete. The piston must further compress the cylinder content until it reaches the top dead center. During this process, the piston still experiences an increased gas force on the way towards TDC, having to invest extra disadvantageous work into the compression stroke, causing a negative work area in the pressure–volume diagram of the engine. The present study introduces the negative work area in the p-V diagram of an HCCI engine. It describes the phenomenon and explores the reasons behind it. It also investigates some of the factors affecting the negative work area in the p-V diagram.

Open Access: Yes

DOI: 10.3390/engproc2024079022

Data-Based Assembly Patterns for Overall Equipment Effectiveness at Semi-Automatic Assembly Lines

János Jósvai Péter Dobra

Publication Name: Periodica Polytechnica Mechanical Engineering

Publication Date: 2022-01-01

Volume: 66

Issue: 3

Page Range: 231-236

Description:

In industrial practice, production planning is a key factor for manufacturers and suppliers. The entire planning process spans from the appearance of the customer demand to the fulfillment of the demand. Operational execution is based on pre-planned production processes and operations using properly allocated resources. The accurate planning of assembly operations within production is an extremely complex process in terms of efficiency. Predicting stochastically variable efficiencies is difficult due to the ever-changing manufacturing conditions. This paper defines typical assembly process situations for a semi-automatic assembly line and examines their consequence for the Overall Equipment Effectiveness (OEE). Firstly, a literature review demonstrates the scientific relevance. Secondly, the classification of patterns based on assembly process description parameters is described taking into account the positive and negative effects on the OEE. In addition, the assembly patterns and their characteristics are illustrated through a real automotive example.

Open Access: Yes

DOI: 10.3311/PPme.19910

Model oriented enterprise integration: Metamodel for realizing the integration

Maria Raffai

Publication Name: IFIP International Federation for Information Processing

Publication Date: 2008-01-16

Volume: 255

Issue: Unknown

Page Range: 807-816

Description:

The main task of IT-specialists in the last decades was to develop applications supporting different business functions and processes. For today the enterprises are well equipped with IT-devices and applications, but in most cases they run separately in various business units and/or on different platforms, they work with data stored not only redundant but also in other forms. Consequently there is an urgent need for integrating systems and fulfilling the entrepreneurs', customers', citizens' needs for on-line inter-organizational cooperation. © 2008 International Federation for Information Processing.

Open Access: Yes

DOI: 10.1007/978-0-387-76312-5_1

Hidden content of passenger data in public transport

Balázs Horváth Viktor Nagy

Publication Name: Procedia Computer Science

Publication Date: 2017-01-01

Volume: 109

Issue: Unknown

Page Range: 506-512

Description:

Nowadays, data sets are spreading continually, generated by different devices and systems. In most cases, these data are stored, and the service providers don't use the information they contain, what even more they delete these data to save space. However, these data are processable with the modern devices and methods, and we can use them for obtaining information. This paper presents a possible application of the digital raw materials, taking the public transport passengers boarding and alighting information as a base. Based on these, we are able to deduce the characteristics of the stop point's environment since the different land usage yields dissimilar stop usage with well-defined peak hours. With the help of distance measurement and classification techniques it is possible to define how similar are the stop points to predefined patterns and we can create stop point groups which define separated zones. The paper shows a usage method of distance measurement methods and classification in public transportation and presents the background of this kind of land-use zone distribution technic.

Open Access: Yes

DOI: 10.1016/j.procs.2017.05.320

High-Sensitivity SIW Sensor for Wide-Range Non-Invasive Blood Glucose Monitoring Using Complementary Split-Ring Resonator

Balázs Benyó Katalin Kovács Hussam Al-Saedi Halah I. Khani Ameer B. Alsultani Muntadher M. Hoom Ameer R. Hassan

Publication Name: Applied Biosciences

Publication Date: 2026-03-01

Volume: 5

Issue: 1

Page Range: Unknown

Description:

This work presents a compact microwave sensor for noninvasive blood glucose monitoring based on a substrate-integrated waveguide loaded with a complementary split-ring resonator on RO4350. The sensing principle uses shifts in resonance frequency and changes in S-parameters to track the dielectric dispersion of glucose-containing tissue. The resonator is constructed using Substrate-Integrated Waveguide (SIW) technology, which mimics the propagation characteristics of a conventional rectangular waveguide. To validate its versatility, the sensor implements three practical sample delivery modes: direct liquid contact with the sensing surface, a glass tube holder mounted over the active region, and a non-invasive fingertip interface. Electromagnetic simulations and benchtop measurements confirm clear glucose-dependent frequency shifts with stable matching and insertion levels. Across the physiological range of 20 to 200 mg·dL−1, the sensor exhibits clear glucose-dependent resonance shifts in all configurations. In direct contact mode, the resonance frequency shifts from 10.83 GHz to 10.45 GHz with sensitivities up to 2.47 MHz per mg·dL−1. The tube configuration shows a shift from 10.49 GHz to 10.38 GHz with sensitivity up to 0.80 MHz per mg·dL−1, while reducing contamination. In the non-invasive fingertip mode, the resonance shifts from 2.56 GHz to 2.52 GHz with sensitivities up to 0.25 MHz per mg·dL−1. These results confirm the sensor’s compactness, reliability, and suitability for portable, low-cost glucose monitoring. The results indicate that the proposed sensor can support practical continuous or spot monitoring and offers a clear path toward portable and low-cost glucose assessment.

Open Access: Yes

DOI: 10.3390/applbiosci5010021