Benchmarking Analysis of Railway Infrastructure Managers: A Hybrid Principal Component Analysis (PCA), Grey Best–Worst Method (G-BWM), and Assurance Region Data Envelopment Analysi... by Snežana Tadić, Aida Kalem, Mladen Krstić, Nermin Čabrić, Adisa Medić, Miloš Veljović

“…To address these challenges, this study proposes a hybrid benchmarking model that integrates Principal Component Analysis (PCA) to identify key performance indicators (KPIs) and reduce data dimensionality, the Grey Best–Worst Method (G-BWM) to determine KPI weight coefficients based on expert evaluations, and Assurance Region Data Envelopment Analysis (AR-DEA) to assess the relative efficiency of RIMs while incorporating real-world constraints. …”
Get full text

Numerical implementation of a stochastic differential equation of motion by Saúl Moisés Torres Murga

“…Using the ordinary differential equation of motion it is possible to determine the position in time of a mass that moves because it is disturbed by some deterministic action. …”
Get full text

A novel computational analysis of boundary-driven two-dimensional heat flow with internal heat generation by Muhammad Abid, Madiha Bibi, Nasir Yasin, Muhammad Shahid

“…Accurate numerical solution of parabolic and elliptic partial differential equations governing two-dimensional heat transfer is critical for engineering simulations but computationally challenging.This work employs key numerical techniques finite differences, conjugate gradients, and Crank-Nicolson time stepping to solve the heat diffusion equation and analyze method performance.The Poisson equation is discretized using second-order central finite differences and solved with the conjugate gradient approach to determine the steady state solution. …”
Get full text

Machine learning approaches for predicting the structural number of flexible pavements based on subgrade soil properties by Asadullah Ziar

“…Gradient boosting achieved the highest accuracy with a determination coefficient of 0.917. Moisture content was identified as the most significant predictor in most models. …”
Get full text

Quantifying evapotranspiration and crop coefficients of California 'Hass' avocado affected by various environmental and plant factors by Aliasghar Montazar, Ben Faber, Dennis Corwin, Alireza Pourreza, Richard L. Snyder

Get full text

Tikhonov Regularization and Perturbation-Level Tuning for the CNM in Pharmacokinetics by Luong Thi Theu, Tran Quang-Huy, Tran Duc-Tan, Bhisham Sharma, Subrata Chowdhury, Karthik Chandran, Saravanakumar Gurusamy

“…This paper suggests two enhanced schemes for the early cluster Newton method (CNM) to concomitantly explore a great solutions number for the inverse parameter determination in pharmacokinetics. …”
Get full text

Separating the Location and Severity Effects in Frequency-Based Crack Detection Using the Dynamic Stiffness Matrix by Julian De Los Rios, Sinniah Ilanko, Yusuke Mochida, David Kennedy

“…Numerical examples demonstrate that computing the DSM of the intact and hinged structures gives an efficient solution method for the inverse problem of identifying crack location and severity. …”
Get full text

A GIS-Based Framework to Analyze the Behavior of Urban Greenery During Heatwaves Using Satellite Data by Barbara Cardone, Ferdinando Di Martino, Cristiano Mauriello, Vittorio Miraglia

“…To evaluate how these indices characterize urban green areas during heatwaves, an unsupervised classification method of the three indices is proposed that uses the Elbow method to determine the optimal number of classes and the Jenks classification algorithm. …”
Get full text

A linear programming-based framework of interval power flow analysis for distribution systems by Xuehan Zhang, Bairong Deng, Zhenning Pan, Tao Yu

“…The interval power flow (IPF) method is widely employed to address the uncertainties of renewable energy sources (RESs) in power systems. …”
Get full text

THE RESULTS OF COMPARATIVE ASSESSMENT OF MECHANIZED TECHNOLOGIES FOR GRAIN CROP CULTIVATION by V. I. Pakhomov, V. B. Rykov, S. I. Kambulov

“…The calculation of economic efficiency included determination of labour cost for one hectare of the arable land and for one hwt of the product, relative size of the capital investments, fuel consumption, operating costs of prime costs of manufacturing, etc. …”
Get full text

Focused ion beam (FIB) prepared microtextured microneedle array capable of delivering drugs through punctured skin by Yan Zhang, Zhaoqiang Chen, Wendong Wu, Chonghai Xu

“…In this study, the skin substitution model of Ogden’s hyperelastic model and the microneedle array and microtexture models with different geometrical parameters were selected to simulate and analyse the flow of the microtexture microneedle arrays penetrating the skin by the finite-element method, and the length of the microneedles was determined to be 200 μm, the width 160 μm, and the value of the gaps was determined to be 420 μm. …”
Get full text

Response surface optimization of co-hydrothermal carbonation parameters of municipal sludge and enteromorpha by ZHI Youwei, XU Donghai*, LIU Huanteng, XU Mingxin, ZHENG Peiyao

“…Traditional treatment methods still face various challenges in terms of harmlessness and resource utilization. …”
Get full text

Study of dynamics and rigidity of multifunctional coating of protective element of aircraft by A. V. Kupryashov

Get full text

Cartographie spatialisée des pertes en terre selon la méthode isotopique du Césium 137 dans le bassin versant de l’oued El Mssine (Tunisie nord-est) by Naima Azaiez, Ali Hamza

“…Following the spatiotemporal distribution of this tracer one comes to understand the causes of the soil particles displacement as well as those due to the different determining factors. The Cesium 137 becomes an efficient quantification tracer of the movement of soil particles. …”
Get full text

Off-Design Analysis of Power-to-Gas System Based on Solid-Oxide Electrolysis with Nominal Power of 25 kW by Grzegorz Koziński, Jarosław Milewski, Jakub Kupecki

“…Solid-oxide electrolysis (SOE) offers a method to produce clean hydrogen without harmful emissions, being the most efficient of all electrolysis methods. …”
Get full text

CALCULATION OF THREE-LAYER LARGE DIAMETER PIPES ON THE PC «LIRA» by A. I. Bulgakov, R. I. Vishtalov, H. M. Muselemov, O. M. Ustarkhanov

“…On the other hand, one of the main indicators of efficiency of trunk pipelines is their material consumption. …”
Get full text

Analysis of casson nanofluid transport rates near a vertical stretching sheet with dissipation and slip effects by Tadesse Walelign

“…Furthermore, the study considers a more comprehensive mathematical model in the area under consideration and the resulting equations are solved by an efficient optimal homotopy analysis method.…”
Get full text

Comparative Analysis of the Economic Sustainability of Transport Systems Served by Alternative and Conventional Buses and Coaches by András LAKATOS, János TÓTH, Ádám TÖRÖK

“…The unit costs per kilometre of the different propulsion systems will be examined. The method can be used to determine the most economically efficient and sustainable choice of vehicle propulsion for the public transport service provider, and to obtain a realistic picture of unit costs.…”
Get full text

The Comparison of Water Spinach (Ipomoea aquatica) Density Using Aquaponic System Through Reduced Concentration of Ammonia (NH3), Nitrite (NO2), Nitrate (NO3) And Its Influence On... by Prayogo Prayogo

“…The method used is the experimental method. The experimental research is used to determine the effect of certain variable towards a group under controlled conditions. …”
Get full text

Comparison of methods for modeling the gas-dynamic characteristics of high-pressure centrifugal compressors that ensure the operation of field low-temperature separation units usin... by M. A. Vorontsov, V. Yu. Glazunov, A. S. Grachev, M. S. Mashtalir, S. A. Pospelov, A. V. Chernyshev

“…Currently, for the development of Valanginian and other deeplying (compared to the Cenomanian) deposits, low-temperature separation (LTS) units with turboexpander units (TDA) are used, and the booster compressor station (BCS) is one of the key technological facilities necessary to ensure the efficient operation of promising technologies for gas preparation using the NTS method with TDA turboexpander units for transport. …”
Get full text