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Publications - 6374

Optimal techno-economic framework for the design and control of off-grid solar-battery EV charging stations in Benban-Egypt

Mohamed Elgohary Ahmed Mashaly Elsayed Elsherbiny Hamdy Ahmed Belal Noureldin Yara M. Elhawary Ragab A. El-Sehiemy

Publication Name: Journal of Energy Storage

Publication Date: 2026-07-30

Volume: 167

Issue: Unknown

Page Range: Unknown

Description:

This study presents a full design and validation method for an independent PV-battery-based Electric Vehicle (EV) charging station in Benban, Aswan. Using HOMER Pro, the system's techno-economic sizing is done. MATLAB/Simulink simulations are used to check its dynamic operation and MPPT performance. A realistic EV profile is considered (600 kWh per day, with a peak demand of 48.9 kW). Simulink uses population-based algorithms like Gazella Optimization Algorithm (GOA), Grey Wolf Optimization (GWO), and Particle Swarm Optimization (PSO) to improve dual PI controllers. The study looks at how well the system works for both the economy and the environment. The best setup has an Levelized Cost of Energy (LCOE) of $0.111/kWh, a Net Present Cost (NPC) of $430,468, and saves about 212 tons of CO₂ per year, with an unmet load of less than 2%. The results of the simulation show that the DC bus voltage is stable, the MPPT tracking is efficient, and the battery can be charged and discharged reliably even when the sun is not shining. In general, the results show that the proposed off-grid EV charging system is both technically sound and economically competitive for areas with high solar potential.

Open Access: Yes

DOI: 10.1016/j.est.2026.122367

Shear debonding at concrete repair interfaces: An integrated experimental and numerical study

Oveys Ghodousian Marco Domaneschi Majid Movahedi Rad Vahid Shafaie

Publication Name: Case Studies in Construction Materials

Publication Date: 2026-07-01

Volume: 24

Issue: Unknown

Page Range: Unknown

Description:

Durable repair of concrete structures relies critically on the shear bond between new and existing concrete, yet reliable prediction of this bond remains challenging due to highly localized interfacial damage mechanisms. Conventional numerical interaction strategies, such as tie constraints, are unable to capture progressive debonding, often leading to unconservative estimates of load transfer and structural capacity. This study presents a three-dimensional Finite Element approach that explicitly represents the repair interface through thin sacrificial layers governed by Concrete Damaged Plasticity and element deletion. The approach is validated against a dedicated shear push-out experimental campaign in which the cement content of the repair layer was systematically varied from 300 to 550 kg/m³ while all other parameters are held constant. The numerical model accurately reproduces the experimentally observed zipper-type interfacial debonding and captures both the onset and propagation of localized shear damage, with satisfactory quantitative agreement. Building on this validation, continuous calibration curves are derived with high statistical correlation (R2 ≈ 0.95) and low predictive error (NRMSE < 9%), directly relating repair cement content to shear bond strength and interface compressive strength. Specifically, the framework captures the nonlinear increase in shear bond strength from 0.21 to 1.85 MPa. The proposed method provides a physically grounded and design-oriented bridge between mix proportioning and structural simulation, enabling consistent definition of interface parameters without iterative numerical tuning.

Open Access: Yes

DOI: 10.1016/j.cscm.2026.e06160

Resource allocation and cost reduction by means of alternative solutions

Zs T. Kosztyán Andrea Bencsik Z. Perjés

Publication Name: Innovations and Advanced Techniques in Systems Computing Sciences and Software Engineering

Publication Date: 2008-12-01

Volume: Unknown

Issue: Unknown

Page Range: 556-559

Description:

In the course of planning and implementation of projects it occurs frequently that after the preliminary calculation of the optimal resources allocation - in order to obtain minimal total cost - a project can not be realized at a price which is expected by the inviter of the tender. In the following study we present a method by which, in case of a delimited maximal budget, we are able to determine the schedule, cost demands and resource requirements of a project to be implemented with the highest possible quality. © Springer Science+Business Media B.V. 2008.

Open Access: Yes

DOI: 10.1007/978-1-4020-8735-6_103

SPECTRAL ACCELERATION FROM THE 2017 SARPOL-E ZAHAB EARTHQUAKE: PREDICTIONS AND OBSERVATIONS

Hayder Thabit Al Hudaib R. Ibrahim R. P. Ray

Publication Name: World Conference on Earthquake Engineering Proceedings

Publication Date: 2024-01-01

Volume: 2024

Issue: Unknown

Page Range: Unknown

Description:

This article investigates the spectral acceleration of the ground motion generated by the 2017 Sarpol-e Zahab earthquake, examining the spatial distribution of the observed spectra at different periods, revealing a distinct influence of source directivity. The earthquake motions were acquired by the Iranian Strong Motion Network (ISMN), and data from a total of 110 seismic stations were obtained from their network for the purpose of the present study. The regions located south of the epicenter experienced a higher spectral acceleration value compared to those sites located to the north. In addition, estimates from ground motion prediction equations (Abrahmson et al., 2014, ASK14; Akkar et al., 2014, ASB14) provided a basis for comparison. These equations predicted intensities over various distances and periods. The residual analysis results indicate that the ASB14 model provides a more accurate fit when compared to the ASK14 model for distances less than 300 km. However, for distances greater than 300 km, the ASK14 model demonstrates a better fit. The derived response spectra play a significant role in evaluating maximum response amplitudes and for seismic hazard studies. Our assessments combined PSA information with source characteristics, geology, soil conditions, and epicentral distance. The current study highlights the impacts of the 2017 Sarpol-e Zahab earthquake on the Darbandikhan Dam, which caused cracking on the road pavement along the Dam crest and horizontal and vertical displacement in some parts of the dam. Finally, the study evaluates the strong-motion distribution maps of acceleration response spectra (PSA) with 5% damping at various period intervals from (0.1 to 2.0 sec) on the dam site, which could produce the consequences observed for the dam.

Open Access: Yes

DOI: DOI not available

Foreign direct investment in the republic of serbia: Correlation between foreign direct investments and the selected economic variables

Laszlo Vasa Aleksandra Angeloska

Publication Name: Journal of International Studies

Publication Date: 2020-01-01

Volume: 13

Issue: 1

Page Range: 170-183

Description:

Foreign Direct Investment (FDI) in the theory of economic thought is considered to be an important factor for country’s growth and development. By encouraging multinational corporations to invest, host countries hope to generate spillovers because FDI transfer intangible assets to the affiliate, which may then diffuse to local firms. Serbia is integrating into European economic space with a significant delay. Despite a thunderous decade of wars and ethnic tussle, late transition and financial crisis, Serbia has experienced significant FDI inflows in the last decade, mainly because of the improved policies attracting foreign investors. The aim of this paper is to analyze the correlation and significant degree to which the examined variables are associated with each other. The economic variables cover 12 years (2007-2018). The main focus is on those variables that are considerably influencing changes and impact on FDI in Serbia. The study uses SPSS to analyse the correlations among the selected eight socioeconomic variables. The examined variables are: industrial growth, unemployment rate, employment from age 15 to 65, foreign trade balance, FDI inflows, FDI outflows, GDP growth, and the share of value added products in the exports. For this analysis the data from the Statistical Office or the Republic of Serbia, the National Bank of Serbia and the Ministry of Finance has been used. There is a very weak correlation between FDI inflows and the unemployment rate. Also, our results suggest there is a very weak correlation between FDI inflows and increased GDP growth. The GDP growth has strong correlations with the industry growth, FDI inflow and FDI outflow.

Open Access: Yes

DOI: 10.14254/2071-8330.2020/13-1/11

Beyond lead and diabolo – penetration capabilities of non-traditional air gun projectiles

Viktor Soma Poór Sándor Szukits Gábor Simon Gabor Kovacs Karola Petrus

Publication Name: Forensic Science International

Publication Date: 2026-07-01

Volume: 384

Issue: Unknown

Page Range: Unknown

Description:

The traditional air gun pellet is either spherical or diabolo type with a head followed by a narrow mid-section and a skirt. But apart from these traditional homogenous pellets, special ammunition is also available for air guns, including lead-free, dart-shaped, plastic-coated, and “explosive” pellets producing flash and loud bang upon impact. The scientific data on the penetration capability and terminal ballistic behavior of these pellets are very limited. The study aimed to determine and compare the ballistic gel and tissue penetration capabilities of different air gun ammunition. Ballistic gel and porcine skin penetration of eleven types of 4.5 mm diameter (.177) air gun pellets, including traditional diablo-type lead pellets, lead-free pellets, plastic-coated pellets, and ammunition with an “explosive” charge, were examined. The ballistic gel penetration depth was measured using a digital caliper. The porcine test targets underwent computer tomography (CT) examination and the traditional autopsy method. Histological analysis was performed of the entrance wound and wound track of “explosive” ammunition. The muzzle velocity ranged from 75.4 to 245.1 m/s, and the muzzle energy ranged from 2.5 to 8.5 J. The maximal gel penetration ranged from 26.0 to 117.8 mm, and the final projectile position ranged from 23.8 to 113.2 mm. Tissue penetration ranged from 8.5 mm to 102.2 mm, and full-thickness tissue penetration was achieved in 35 shots from 79. Results: indicate large variations in muzzle energy in the case of non-traditional pellets, even if the same weapon is used. Penetration depth does not correlate strongly with muzzle speed in the case of non-traditional pellets, as the shape and type of pellet have a significant influence on penetration. Some non-traditional pellets may leave behind their plastic sheath in the tissues, which requires special attention since these are invisible on CT scans. Pellets with an “explosive charge” leave behind a blackish discoloration around the entrance wound and in the wound track, which is visually identifiable and also visualized in CT.

Open Access: Yes

DOI: 10.1016/j.forsciint.2026.112929

A Systematic Analysis of Neural Networks, Fuzzy Logic and Genetic Algorithms in Tumor Classification

Ferenc Lilik Ahmed Al-Ashoor Szilvia Nagy

Publication Name: Applied Sciences Switzerland

Publication Date: 2025-05-01

Volume: 15

Issue: 9

Page Range: Unknown

Description:

This study explores existing research on neural networks, fuzzy logic-based models, and genetic algorithms applied to brain tumor classification. A systematic review of 53 studies was conducted following PRISMA guidelines, covering search strategy, selection criteria, quality assessment, and data extraction. Articles were collected from three scientific databases: Web of Science, Scopus, and IEEE. The review primarily focuses on practical contributions, with most studies emphasizing applications over conceptual insights. Key methods in the field demonstrate significant impact and innovation. Commonly used training and testing mechanisms include dataset splitting, augmentation, and validation techniques, highlighting their widespread adoption for performance evaluation. The analysis of evaluation metrics shows that accuracy and the DICE score are the most frequently used, alongside sensitivity, specificity, recall, and other domain-specific measures. The variety of metrics underscores the need for tailored approaches based on dataset characteristics and research objectives. By highlighting trends, challenges, and research gaps, this review provides actionable insights for advancing BTC research. It offers a comprehensive overview of techniques and evaluation methods to guide future developments in this critical domain.

Open Access: Yes

DOI: 10.3390/app15095186

On possibilistic correlation coefficient and ratio for triangular fuzzy numbers with multiplicative joint distribution

Istvan A. Harmati Peter Varlaki Robert Fuller

Publication Name: 11th IEEE International Symposium on Computational Intelligence and Informatics Cinti 2010 Proceedings

Publication Date: 2010-12-01

Volume: Unknown

Issue: Unknown

Page Range: 103-108

Description:

The goal of this paper is to provide calculation formulas for the possibilistic correlation coefficient and ratio for two marginal possibility distributions of triangular form when their joint possibility distribution is defined by the product t-norm. We will also introduce an alternative definition for the possibilistic correlation coefficient and ratio when their joint possibility distribution is defined by the product t-norm. ©2010 IEEE.

Open Access: Yes

DOI: 10.1109/CINTI.2010.5672266

Tutorial on the fragmentation of the railway ballast particles and calibration methods in discrete element modelling

Szabolcs Fischer Erika Juhasz

Publication Name: Acta Technica Jaurinensis

Publication Date: 2021-02-24

Volume: 14

Issue: 1

Page Range: 104-122

Description:

This paper presents a short literature review related to the fragmentation of the railway crushed ballast particles. With the help of the processed articles with the main topic of discrete element modelling (DEM) we aim to provide some insight into the international achievements and forward progress of the subject. Rock materials as granular elements can be investigated from several perspectives. The elements can be examined in laboratory conditions purely from the quarry, or even by obtaining already fragmented particles from the real railway tracks. In addition, DEM models can be created by using computer software. This article tackles only a small segment of the literature. Though each DEM topic was unique, they all involved examination of degradation of particles in some way. This review focuses on model building, including particle construction and calibration. The selected publications do not cover the current state of the entire DEM research related to ballast degradation.

Open Access: Yes

DOI: 10.14513/actatechjaur.00569