Article
Geochemistry & Geophysics
Sheyore John Omovie, John P. Castagna
Summary: The study analyzed compressional and shear-wave sonic logs in seven organic-rich shale reservoirs and found that compressional-wave velocity is a strong predictor of shear-wave velocity. A linear relationship exists between compressional and shear-wave velocities in shale reservoirs, which can be refined for prediction purposes with local calibration or linear correction. The study also developed an empirical rock physics model that explicitly incorporates mineral composition, fluid substitution effects, and amount of solid organic matter, resulting in high accuracy and precision in shear-wave velocity estimation across all formations.
GEOPHYSICAL PROSPECTING
(2021)
Article
Medicine, General & Internal
Thandra Jithendra, Shaik Sharief Basha
Summary: This study aims to improve the functionality of Adaptive Neuro-Fuzzy Inference System (ANFIS) to ensure the accuracy of existing time-series modeling. The development of an adaptive neuro-fuzzy inference system-reptile search algorithm (ANFIS-RSA) is proposed to effectively predict COVID-19 cases. The integration of machine learning model (ANFIS) and nature-inspired Reptile Search Algorithm (RSA) enhances the modeling performance.
Article
Pharmacology & Pharmacy
Miguel O. Jara, Mariana Landin, Javier O. Moralesa
Summary: The study utilized neurofuzzy logic (NFL) for fabricating polycaprolactone nanoparticles and found that stabilizer selection is crucial in preventing nanoparticle aggregation. Fluid dynamics-related inputs were also important in tuning the characteristics of stabilized nanoparticles.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2021)
Article
Mathematics, Applied
Aditya Khamparia, Rajat Jain, Poonam Rani, Deepak Gupta, Ashish Khanna, Oscar Castill
Summary: The study aims to design a system for diagnosing COVID-19 using ANFIS, and comparative analysis reveals that ANFIS model outperforms fuzzy systems in accuracy.
APPLIED AND COMPUTATIONAL MATHEMATICS
(2021)
Article
Computer Science, Artificial Intelligence
Ali Mortazavi
Summary: The study introduces a new probabilistic search algorithm IFBSA, which adjusts search behavior through fuzzy and Bayesian mechanisms, showing superior performance in terms of accuracy, stability, and convergence rate.
EXPERT SYSTEMS WITH APPLICATIONS
(2022)
Article
Computer Science, Information Systems
Haregewoyn Fentaw Asres, Abrham Tadesse Kassie
Summary: Active Magnetic Bearing system (AMB) is a nonlinear mechatronic device used to levitate rotating components without contact. To ensure stability and optimal performance, controllers are necessary. In this paper, a neuro-fuzzy sliding mode controller (NFSMC) is designed to control the position of the AMB system. Simulation experiments and comparison analysis reveal that the NFSMC controller achieves better stability and performance.
Article
Engineering, Electrical & Electronic
Jelena Ivancan, Dragutin Lisjak, Dusko Pavletic, Davor Kolar
Summary: The reliable operation of a process plant is crucial for business safety, performance, and profitability. Failure Mode and Effects Analysis (FMEA) is used to identify potential failure modes, their root causes, and consequences in systems, subsystems, and equipment. Although criticized, FMEA is widely used in process industries as part of reliability-centered maintenance, safety management, and continuous improvement. A new conceptual model is proposed in this study to enhance the traditional FMEA technique and make it a more autonomous, data-driven, and accurate method, combining ANFIS and FIS models for defect handling, risk level quantification, and prioritization of mitigation actions.
Article
Energy & Fuels
Muhammad Abbas, Duanjin Zhang
Summary: This paper introduces an intelligent PV fault detection system using the ANFIS methodology, trained with GP and SC strategies. The ANFIS SC approach outperformed the ANFIS GP approach in predicting and classifying PV system faults with high accuracy and performance metrics.
Article
Geochemistry & Geophysics
Navid Kheirdast, Anooshiravan Ansari, Susana Custodio
Summary: Kinematic finite-fault source inversions aim to resolve the spatio-temporal evolution of slip on a fault given ground motion recorded on the Earth's surface. This type of inverse problem is inherently ill posed due to the greater number of model parameters compared to independent observed data and the generation of small singular values amplifying the effect of noise in the inversion. A fuzzy function approximation approach using Adaptive Network-based Fuzzy Inference System (ANFIS) is proposed to describe the spatial slip function, optimizing the fuzzy basis functions and amplitudes through hybrid learning. The method involves solving the earthquake source problem in the frequency domain, searching for optimal spatial slip distribution independently for each frequency, and using Tikhonov regularization to constrain the smooth spatial slip variation.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Computer Science, Artificial Intelligence
Raul Navarro-Almanza, Mauricio A. Sanchez, Juan R. Castro, Olivia Mendoza, Guillermo Licea
Summary: This paper discusses interpretable machine learning techniques for building a human-understandable decision process, introducing white-box and black-box models, and exploring the application of neuro-fuzzy systems in interpretable machine learning.
EXPERT SYSTEMS WITH APPLICATIONS
(2022)
Article
Mathematics
Narayan Nayak, Soumya Ranjan Das, Tapas Kumar Panigrahi, Himansu Das, Soumya Ranjan Nayak, Krishna Kant Singh, S. S. Askar, Mohamed Abouhawwash
Summary: In this paper, an adaptive depth and heading control of an autonomous underwater vehicle using the concept of an adaptive neuro-fuzzy inference system (ANFIS) is designed. The proposed control design combines fuzzy logic and neural network control blocks to control the depth and heading angle of the vehicle. Simulations show that the proposed adaptive controller exhibits superior performance compared to other control methods.
Article
Computer Science, Interdisciplinary Applications
Ali Gholami Vijouyeh, Ali Kadkhodaie, Mohammad Hassanpour Sedghi, Hamed Gholami Vijouyeh
Summary: Determining the petrophysical properties of a reservoir, such as shear wave velocity, is crucial for exploration and production management. This study developed a robust committee machine model to estimate fast and slow shear wave velocities from petrophysical logs. Different algorithms, including artificial neural network, fuzzy logic, and neuro-fuzzy, were applied and their outputs were merged using optimization methods. The committee machine achieved superior performance over individual systems in estimating shear wave velocities.
COMPUTERS & GEOSCIENCES
(2022)
Article
Polymer Science
Hossein Saberi, Ehsan Esmaeilnezhad, Hyoung Jin Choi
Summary: In this study, artificial intelligence techniques were used to evaluate the performance of polymer flooding operation, utilizing multilayer perceptron, radial basis function, and fuzzy neural networks to estimate the output EOR performance, with MLP neural network demonstrating a high ability for prediction. This proposed model can significantly assist engineers in selecting appropriate EOR methods, with API gravity, salinity, permeability, porosity, and salt concentration having the greatest impact on polymer flooding performance.
Article
Green & Sustainable Science & Technology
Abdusselam Altunkaynak, Anil Celik
Summary: In this study, a novel Geno-fuzzy based model (GENOFIS) was developed for accurate efficiency estimation of an oscillating water column (OWC). The model showed superior performance after improving the Adaptive Neuro-Fuzzy inference system (ANFIS) and incorporating the Genetic algorithms (GAs).
Article
Engineering, Civil
Xin Hu, Guibing Zhu, Yong Ma, Zhixiong Li, Reza Malekian, Miguel Angel Sotelo
Summary: This article investigates the event-triggered adaptive fuzzy output feedback setpoint regulation control for surface vessels. The control scheme effectively maintains the position and heading of the vessels at desired points in the setpoint regulation operation, ensuring closed-loop semi-global stability.
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
(2022)
Article
Geosciences, Multidisciplinary
Abbas Babaahmadi, Gideon Rosenbaum, Renate Sliwa, Joan Esterle, Mojtaba Rajabi
GEOLOGICAL MAGAZINE
(2019)
Article
Geosciences, Multidisciplinary
Alireza Salmachi, Erik Dunlop, Mojtaba Rajabi, Zahra Yarmohammadtooski, Steve Begg
Article
Geochemistry & Geophysics
Rasoul Ranjbar-Karami, Mojtaba Rajabi, Ali Ghavidel, Abdolvahab Afroogh
Article
Energy & Fuels
Saswata Mukherjee, Mojtaba Rajabi, Joan Esterle, Jeff Copley
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2020)
Article
Energy & Fuels
Sophia Morawietz, Oliver Heidbach, Karsten Reiter, Moritz Ziegler, Mojtaba Rajabi, Guenter Zimmermann, Birgit Mueller, Mark Tingay
Review
Energy & Fuels
Alireza Salmachi, Mojtaba Rajabi, Carmine Wainman, Steven Mackie, Peter McCabe, Bronwyn Camac, Christopher Clarkson
Summary: Coal seam gas in Australia, primarily located in the Bowen and Surat basins, plays a crucial role in the country's LNG industry. The production rates and reserves achieved since 2013 demonstrate economic viability, with favorable geological conditions supporting CSG production.
Article
Energy & Fuels
Saswata Mukherjee, Mojtaba Rajabi, Joan Esterle
Summary: The study reveals that the permeability and fracture intensity of the sub-bituminous Walloon coals in the Surat Basin are influenced by coal composition and geological structures, showing regional variations. These factors collectively control the rheological behavior of the Walloon Coal Measures in the basin.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2021)
Editorial Material
Geosciences, Multidisciplinary
Abdelkader Soumaya, Ali Kadri, Noureddine Ben Ayed, Young-Seog Kim, Tim P. Dooley, Mojtaba Rajabi, Ahmed Braham
JOURNAL OF STRUCTURAL GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Mojtaba Rajabi, Joan Esterle, Oliver Heidbach, Daniel Travassos, Silvestre Fumo
Summary: This paper presents the first comprehensive analysis of present-day stress in the Moatize Basin, Mozambique, shedding light on the sources and patterns of stress in the region. It provides important clues for understanding the active tectonics in the Eastern African Rift System.
Article
Energy & Fuels
Kane Maxwell, Mojtaba Rajabi, Joan Esterle
Summary: Inaccuracies in spatial modelling of coal properties can impact resource estimates. Geostatistical methods are recommended but have drawbacks. A machine learning approach based on quantile regression forest is proposed as an alternative method.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Kane Maxwell, Mojtaba Rajabi, Joan Esterle
Summary: The selection of different in-situ density spatial model methods has a significant impact on resource tonnage estimates in coal deposits, especially those affected by intrusion. It is recommended to carefully choose and evaluate spatial model methods in such cases.
NATURAL RESOURCES RESEARCH
(2022)
Article
Energy & Fuels
Jimmy Xuekai Li, Matt Tsang, Ruizhi Zhong, Joan Esterle, Claire Pirona, Mojtaba Rajabi, Zhongwei Chen
Summary: In this paper, advanced machine learning and computer vision techniques were applied to provide a data-driven solution to reduce the subjectivity of Coal Mine Roof Rating (CMRR) calculation. The machine learning methods were used to predict the uniaxial compressive strength (UCS) of roof strata and the computer vision model was adopted to extract core dimensions for rock quality designation (RQD) and fracture spacing calculation. The automatic CMRR values from machine learning models showed a promising correlation with the manually calculated CMRR values, indicating the potential of this approach as an alternative method.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Parisa Tavoosi Iraj, Mojtaba Rajabi, Rasoul Ranjbar-Karami
Summary: This study investigated the petrophysical properties and heterogeneity rate of the Fahliyan Formation in southwestern Iran. The analysis revealed that low energy lagoonal facies dominated by meteorically dissolved mud are the best reservoir intervals, while intensively cemented and compacted facies formed the tight zones in the reservoir. Heterogeneity assessment showed that Layer-1 is the most heterogeneous unit, while Layer-2 and Layer-3 exhibit similar behavior. Porosity distribution histograms indicated that Layer-3 has more heterogeneous pore types and network. Image log-derived porosity distribution showed homogeneous pores in Layer-1 and heterogeneous pores in Layer-3 due to extensive dissolution and development of fractures.
NATURAL RESOURCES RESEARCH
(2023)
Article
Energy & Fuels
Alireza Salmachi, Abbas Zeinijahromi, Mohammed Said Algarni, Nawaf Abdullah Abahussain, Saad Abdullah Alqahtani, Alexander Badalyan, Mohammad Rezaee, Mojtaba Rajabi
Summary: This study examines the effect of carbon dioxide (CO2) on the pore structure of coal during CO2 injection, aiming to understand the challenges associated with CO2 sequestration in depleted coal seam gas reservoirs. The results show that irreversible changes lead to a 43% decrease in effective porosity, which is clearly observed in the 3D model of cleat and fracture networks after CO2 flooding. At lower effective stresses, pore compressibility offsets matrix swelling, resulting in improved permeability that benefits CO2 injection. Furthermore, analysis of borehole image logs indicates that fractures and cleats mostly terminate within coal intervals, with few extending into adjacent strata with low permeability.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Abdelkader Soumaya, Ali Kadri, Noureddine Ben Ayed, Young-Seog Kim, Tim P. Dooley, Mojtaba Rajabi, Ahmed Braham
JOURNAL OF STRUCTURAL GEOLOGY
(2020)
Article
Computer Science, Interdisciplinary Applications
Yapo Abole Serge Innocent Oboue, Yunfeng Chen, Sergey Fomel, Wei Zhong, Yangkang Chen
Summary: Strong noise can disrupt the recorded seismic waves and negatively impact subsequent seismological processes. To improve the signal-to-noise ratio (S/N) of seismological data, we introduce MATamf, an open-source MATLAB code package based on an advanced median filter (AMF) that simultaneously attenuates various types of noise and improves S/N. Experimental results demonstrate the usefulness and advantages of the proposed AMF workflow in enhancing the S/N of a wide range of seismological applications.
COMPUTERS & GEOSCIENCES
(2024)
Article
Computer Science, Interdisciplinary Applications
Upkar Singh, P. N. Vinayachandran, Vijay Natarajan
Summary: The Bay of Bengal maintains its salinity distribution due to the cyclic flow of high salinity water and the mixing with freshwater. This paper introduces an advection-based feature definition and algorithms to track the movement of high salinity water, validated through comparison with observed data.
COMPUTERS & GEOSCIENCES
(2024)
Article
Computer Science, Interdisciplinary Applications
Bijal Chudasama, Nikolas Ovaskainen, Jonne Tamminen, Nicklas Nordback, Jon Engstro, Ismo Aaltonen
Summary: This contribution presents a novel U-Net convolutional neural network (CNN)-based workflow for automated mapping of bedrock fracture traces from aerial photographs acquired by unmanned aerial vehicles (UAV). The workflow includes training a U-Net CNN using a small subset of photographs with manually traced fractures, semantic segmentation of input images, pixel-wise identification of fracture traces, ridge detection algorithm and vectorization. The results show the effectiveness and accuracy of the workflow in automated mapping of bedrock fracture traces.
COMPUTERS & GEOSCIENCES
(2024)
Article
Computer Science, Interdisciplinary Applications
Ruizhen Wang, Siyang Wan, Weitao Chen, Xuwen Qin, Guo Zhang, Lizhe Wang
Summary: This paper proposes a novel framework to generate a finer soil strength map based on RCI, which uses ensemble learning models to obtain USCS soil classification and predict soil moisture, in order to improve the resolution and reliability of existing soil strength maps.
COMPUTERS & GEOSCIENCES
(2024)
Article
Computer Science, Interdisciplinary Applications
Zhanlong Chen, Xiaochuan Ma, Houpu Li, Xuwei Xu, Xiaoyi Han
Summary: Simulated terrains are important for landform and terrain research, disaster prediction, rescue and disaster relief, and national security. This study proposes a deep learning method, IGPN, that integrates global information and pattern features of the local terrain to generate accurate simulated terrains quickly.
COMPUTERS & GEOSCIENCES
(2024)
Article
Computer Science, Interdisciplinary Applications
Daniele Secci, Vanessa A. Godoy, J. Jaime Gomez-Hernandez
Summary: Neural networks excel in various machine learning applications, but lack physical interpretability and constraints, limiting their accuracy and reliability in predicting complex physical systems' behavior. Physics-Informed Neural Networks (PINNs) integrate neural networks with physical laws, providing an effective tool for solving physical problems. This article explores recent developments in PINNs, emphasizing their application in solving unconfined groundwater flow, and discusses challenges and opportunities in this field.
COMPUTERS & GEOSCIENCES
(2024)
Article
Computer Science, Interdisciplinary Applications
Renguang Zuo, Ying Xu
Summary: This study proposes a hybrid deep learning model consisting of a one-dimensional convolutional neural network (1DCNN) and a graph convolutional network (GCN) to extract joint spectrum-spatial features from geochemical survey data for mineral exploration. The physically constrained hybrid model performs better in geochemical anomaly recognition compared to other models.
COMPUTERS & GEOSCIENCES
(2024)