Roaa Ibrahim Mohamed Ibrahim Mubarak

Scopus Publications

Design and optimization of CIGS-based solar cell with surface dielectric nanostructures arrangement
Fatma M. Abdel Hamied, Roaa I. Mubarak, K. R. Mahmoud, Mohamed Farhat O. Hameed, S. S. A. Obayya, et al.
Scientific Reports, 2026
An improved algorithm for prediction of vehicle trajectories using short-term goal-driven network
Abdalla Tawfik, Zaki Nossair, Roaa Mubarak
Beni Suef University Journal of Basic and Applied Sciences, 2025
Background Prediction of vehicle trajectories is a crucial task for automated driving systems to accurately take movement actions according to the dynamic traffic environment, especially the future positions of the surrounding vehicles. Predicting how road users will behave in the future is one of the most critical and complex challenges in autonomous driving. Different data types must be combined to accomplish this task using deep learning, such as sensor readings and maps. After that, this data is used to predict a range of possible future outcomes. Existing goal-driven approaches predict the final goal and use it to complete the trajectory; this requires accurate goal prediction, which is challenging. Short-Term Goal Network (STG) addresses this challenge using multiple short-term goals instead of a single final goal. Results The proposed STG network is evaluated on the Argoverse motion forecasting dataset, and the results show significantly better performance than other goal-driven approaches. STG demonstrated a substantial improvement of over 6% in average displacement error and more than 8% in final displacement error. Conclusion This article presents an improved algorithm for predicting vehicle trajectories using short-term goals. The proposed STG algorithm is based on long short-term memory (LSTM) and attention mechanism for predicting trajectories. This work verifies that predicting more than one goal along the trajectory improves the accuracy of the predicted goal and the whole trajectory accordingly.
State of Charge (SoC) Accurate Estimation Using Different Models of LSTM
Fehr Hassan, Mohamed El-Bably, Roaa I. Mubarak
World Electric Vehicle Journal, 2025
Accurately estimating the State of Charge (SoC) is essential for optimal battery charge control and predicting the operational range of electric vehicles. The precision of SoC estimation directly influences these vehicles’ range and safety. However, achieving accurate SoC estimation is challenging due to environmental variations, temperature changes, and electromagnetic interference. Numerous technologies rely on Machine Learning (ML) and Artificial Neural Networks (ANN). The proposed model employs two or more cascaded Long Short-Term Memory (LSTM) networks, which have effectively reduced the Mean Square Error (MSE). Additionally, other models such as Nonlinear Auto Regressive models with exogenous input neural networks (NARX) combined with LSTM, and standard LSTM models have been simulated. In this research a model has been presented with reduced Root Mean Square Error (RMSE) compared to a LSTM by 78% and has reduced the RMSE compared to NARX with LSTM by 47%.
Circuit modeling and hybrid optimization of a lithography-free visible metamaterial absorber
Shimaa I. Sayed, K. R. Mahmoud, Roaa I. Mubarak
Discover Applied Sciences, 2025
This paper presents a lithography-free broadband metamaterial absorber designed to cover the visible wavelength spectrum. Two equivalent circuit models based on Transmission Line theory (TL) and Transfer Matrix Method (TMM) are introduced to accurately characterize the absorber's performance. The proposed models are validated by numerical simulations and compared with existing experimental data, showing a strong agreement with the results. To maximize absorption capability, the structure is further optimized using a hybrid Gravitational Search Particle Swarm Optimization (GSPSO) algorithm. The optimized tungsten structure, with a thin thickness of approximately 160 nm, can achieve absorption over 90% across the visible range from 400 to 785 nm and an average absorption of 96%. Moreover, the absorber exhibits a peak absorbance of over 95% within the range from 435 to 665 nm. In addition, the proposed absorber demonstrates high absorption characteristics, maintaining over 80% absorptivity for incident angles up to 60°, for both TE and TM modes. Therefore, the superior performance characteristics of this absorber, as well as the absence of the need for lithography in the fabrication process, make it a highly promising choice for large-scale manufacturing of devices that operate in the visible light region.
Machine learning-driven stress detection in biomedical engineering applications
Ibrahim Sadek, Mohamed Abdel Al-Alim, Nancy Salem, Roaa Mubarak
Emerging Technologies in the Healthcare System for Sustainable Development, 2025
A machine-learning approach for stress detection using wearable sensors in free-living environments
Mohamed Abd Al-Alim, Roaa Mubarak, Nancy M. Salem, Ibrahim Sadek
Computers in Biology and Medicine, 2024
Strong and Broadband Visible Absorption Based on Titanium Patterned Resonator
Shimaa I. Sayed, K. R. Mahmoud, Roaa I. Mubarak
Plasmonics, 2024
The visible band is characterized by a high concentration of solar energy, making it highly desirable to achieve perfect absorption within this spectral range. This paper presents a novel design of a broadband metamaterial absorber (BMA) based on titanium (Ti), which exhibits a superior level of high absorption in the visible regime. The absorber is composed of three layers arranged from top to bottom: a newly shaped Ti top layer resonator, a SiO2 dielectric spacer, and a Ti bottom reflector. With a thickness of 195 nm, the BMA structure demonstrates an average absorption of 98.11% across the wavelength range of 400–800 nm, ensuring absorption levels greater than 90% through the entire visible band. The influence of different geometrical parameters and structures on absorption was studied, and the physical mechanism behind the high absorption was explored. Additionally, the proposed structure offers the benefit of maintaining 90% absorption stability for large incident angles up to 60° for TE and up to 70° for TM mode oblique incidence. Therefore, our proposed absorber emerges as an optimal candidate for a variety of solar energy harvesting applications.
An improved CFAR algorithm for multiple environmental conditions
Mostafa Y. Rihan, Zaki B. Nossair, Roaa I. Mubarak
Signal Image and Video Processing, 2024
The primary objective of radar digital signal processing is to detect and identify targets in complicated situations, such as those involving clutter or several closely positioned targets. The constant false alarm rate (CFAR) method is more effective for target recognition and has better control over the false alarm rate. Many studies have been conducted on the design of CFAR, but previous CFAR algorithms have not been effective in all or most environmental fields and target scenarios. In this study, an algorithm called Censored Mean Clutter Map CFAR (CM-CM CFAR) has been developed and tested for various environmental conditions. When compared to a fixed false alarm rate, the suggested CFAR algorithm’s Monte Carlo simulation results demonstrated a high detection probability in a variety of environments. This work designs a real-time CM-CM CFAR processor using field-programmable gate array (FPGA) technologies. Xilinx ARTIX 7 FPGA technology is used to develop and map a scalable parallel framework. Consequently, the implementation required 23,741 LUTs and 1825 FF. It is verified that the complexity and operating speed of the suggested CFAR processor are extremely appropriate for real-time implementation when compared to the results of the previously proposed FPGA implementation.
Memristors Modelling and Simulation for Digital to Analog Converter Circuit
Shaimaa Mostafa, Fathy Z. Amer, Mohamed M. ElKhatib, Roaa I. Mubarak
Russian Microelectronics, 2024
Acoustic energy harvesting using an array of piezoelectric cantilever plates for railways and highways environmental noise
Eman Hassan, Sallam A. Kouritem, Fathy Z. Amer, Roaa I. Mubarak
Ain Shams Engineering Journal, 2024
Deep Neural Network Based for Stress Detection
Mohamed Abd Al-Alim, Roaa Mubarak, Nancy M. Salem, Ibrahim Sadek
Procedia Computer Science, 2024
A Deep Learning Approach Using WESAD Data for Multi-Class Classification with Wearable Sensors
Mohamed Abd Al Aleem, Roaa Mubarak, Nancy M. Salem, Ibrahim Sadek
Niles 2024 6th Novel Intelligent and Leading Emerging Sciences Conference Proceedings, 2024
Numerical analysis of carbon-based perovskite tandem solar cells: Pathways towards high efficiency and stability
Mostafa M. Salah, Ahmed Saeed, Mohamed Mousa, Mohamed Abouelatta, A. Zekry, et al.
Renewable and Sustainable Energy Reviews, 2024
Efficient Perovskite Multi-Junction Cell with Twin-Layered Absorber
Ahmed Saeed, Mohamed Mousa, Mostafa M. Salah, A. Zekry, Mohamed Abouelatta, et al.
Conference Record of the IEEE Photovoltaic Specialists Conference, 2024
Design and optimization of broadband metamaterial absorber based on manganese for visible applications
Shimaa I. Sayed, K. R. Mahmoud, Roaa I. Mubarak
Scientific Reports, 2023
New Hybrid MPPT Technique Including Artificial Intelligence and Traditional Techniques for Extracting the Global Maximum Power from Partially Shaded PV Systems
Mohamed Zaghloul-El Masry, Abdallah Mohammed, Fathy Amer, Roaa Mubarak
Sustainability Switzerland, 2023
Investigation of High-Efficiency and Stable Carbon-Perovskite/Silicon and Carbon-Perovskite/CIGS-GeTe Tandem Solar Cells
Ahmed Saeed, Mostafa Salah, Abdelhalim Zekry, Mohamed Mousa, Ahmed Shaker, et al.
Energies, 2023
FPGA Implementation for Multiple CFAR Algorithms
Mostafa Y. Rihan, Zaki B. Nossair, Roaa I. Mubarak
2023 International Telecommunications Conference Itc Egypt 2023, 2023
High-Efficiency Electron Transport Layer-Free Perovskite/GeTe Tandem Solar Cell: Numerical Simulation
Mostafa M. Salah, Abdelhalim Zekry, Mohamed Abouelatta, Ahmed Shaker, Mohamed Mousa, et al.
Crystals, 2022
High-efficiency modified tandem solar cell: Simulation of two-absorbers bottom subcell
Mohamed Mousa, Fathy Z. Amer, Roaa I. Mubarak, Ahmed Saeed
Optik, 2022
Simulation of High open-circuit voltage Perovskite/CIGS-GeTe tandem cell
Mohamed Mousa, Mostafa M. Salah, A. Zekry, Mohamed Abouelatta, Ahmed Shaker, et al.
Conference Record of the IEEE Photovoltaic Specialists Conference, 2022
Design and Simulation of ETL-Free Perovskite/Si Tandem Cell With 33% Efficiency
Ahmed Saeed, Mohamed Mousa, Mostafa M. Salah, A. Zekry, Mohamed Abouelatta, et al.
Wseas Transactions on Electronics, 2022
Two-Terminal Perovskite/Silicon Solar Cell: Simulation and Analysis
Mohamed Mousa, Fathy Z. Amer, Ahmed Saeed, Roaa I. Mubarak
Niles 2021 3rd Novel Intelligent and Leading Emerging Sciences Conference Proceedings, 2021
Simulation of optimized high-current tandem solar-cells with efficiency beyond 41%
Mohamed Mousa, Fathy Z. Amer, Roaa I. Mubarak, Ahmed Saeed
IEEE Access, 2021
Simulation of High-Efficiency Perovskite-Based Tandem Solar Cells
Mohamed Mousa, Fathy Z. Amer, Ahmed Saeed, Roaa I. Mubarak
Sienr 2021 6th International Symposium on New and Renewable Energies, 2021
High Efficiency Tandem Perovskite/CIGS Solar Cell
Mohamed Mousa, Mostafa M. Salah, Fathy Z. Amer, Ahmed Saeed, Roaa I. Mubarak
2020 2nd International Conference on Smart Power and Internet Energy Systems Spies 2020, 2020
A Novel EEG Classification Technique Based on Particle Swarm Optimization for Hand and Finger Movements
Nourhan Wafeek, Roaa I. Mubarak, Mohamed E. Elbably
Advances in Intelligent Systems and Computing, 2020
Performance investigation and element optimization of 2D array transducer using Bat Algorithm
Dina Tantawy, M. Eladawy, M. Hassan, Roaa I. Mubarak
Archives of Electrical Engineering, 2020
Quantitative mathematical objective evaluation of contrast-enhanced spectral mammogram in the assessment of response to neoadjuvant chemotherapy and prediction of residual disease in breast cancer
Amr Farouk Ibrahim Moustafa, Rasha Mohammed Kamal, Mohammed Mohammed Mohammed Gomaa, Shaimaa Mostafa, Roaa Mubarak, et al.
Egyptian Journal of Radiology and Nuclear Medicine, 2019
Compact Tri-Band Pass Filter Using Optimized Psi-Shaped Resonators
2019 International Applied Computational Electromagnetics Society Symposium in Miami Aces Miami 2019, 2019
Tri-band Pass Filter Using Optimized Psi-shaped Resonators
Shahenda Hatem, Hesham A. Mohamed, Roaa Mubarak, Korany R. Mahmoud
Proceedings of 2019 International Conference on Innovative Trends in Computer Engineering Itce 2019, 2019
Breast Cancer Detection Using Polynomial Fitting Applied on Contrast Enhanced Spectral Mammography
Shaimaa Mostafa, Roaa Mubarak, Mohamed El-Adawy, Amr F. Ibrahim, Mohamed M. Gomaa, et al.
Proceedings of 2019 International Conference on Innovative Trends in Computer Engineering Itce 2019, 2019
Breast cancer detection using polynomial fitting for intensity spreading within ROIs
Shaimaa Mostafa, Roaa Mubarak, Mohamed El-Adawy
Advances in Intelligent Systems and Computing, 2018
Conical structures for highly efficient solar cell applications
Fatma M. H. Korany, Mohamed Farhat O. Hameed, Mohamed Hussein, Roaa Mubarak, Mohamed I. Eladawy, et al.
Journal of Nanophotonics, 2018
Modified conical silicon nanowires for highly efficient light trapping
Mohamed Farahat, Mohamed Hussein, M. El-Adawy, Salah S.A. Obayya, Fatma Korany, et al.
Proceedings of SPIE the International Society for Optical Engineering, 2018
Improving maximum power point tracking of partially shaded photovoltaic system by using IPSO-BELBIC
M. Abd Al-Alim El-Garhy, R.I. Mubarak, M. El-Bably
Journal of Instrumentation, 2017
Optimization of partially shaded photovoltaic systems by enhancing maximum power point tracking by using IPSO-PID
Mohamed Abd Al-Alim, Roaa I. Mubarak, Mohamed Elbably
Proceedings of the 2017 IEEE International Conference on Intelligent Techniques in Control Optimization and Signal Processing Incos 2017, 2017
Different species classifier based on hemoglobin sequences
R. I. Mubark, H. A. Keshkd, M. I. Eladawy
Ifmbe Proceedings, 2008

RECENT SCHOLAR PUBLICATIONS

Design and optimization of CIGS-based solar cell with surface dielectric nanostructures arrangement
FM Abdel Hamied, RI Mubarak, KR Mahmoud, MFO Hameed, ...
Scientific Reports 16 (1), 3730 , 2026
2026
Machine learning–driven stress detection in biomedical engineering applications
I Sadek, MA Al-Alim, N Salem, R Mubarak
Emerging Technologies in the Healthcare System for Sustainable Development … , 2026
2026
State of Charge (SoC) Accurate Estimation Using Different Models of LSTM
F Hassan, M El-Bably, RI Mubarak
World Electric Vehicle Journal 16 (10), 572 , 2025
2025
Citations: 2
Circuit modeling and hybrid optimization of a lithography-free visible metamaterial absorber
SI Sayed, KR Mahmoud, RI Mubarak
Discover Applied Sciences 7 (8), 790 , 2025
2025
Citations: 5
An improved algorithm for prediction of vehicle trajectories using short-term goal-driven network
A Tawfik, Z Nossair, R Mubarak
Beni-Suef University Journal of Basic and Applied Sciences 14 (1), 50 , 2025
2025
Citations: 1
A deep learning approach using wesad data for multi-class classification with wearable sensors
M Abd Al Aleem, R Mubarak, NM Salem, I Sadek
2024 6th Novel Intelligent and Leading Emerging Sciences Conference (NILES … , 2024
2024
Citations: 10
A machine-learning approach for stress detection using wearable sensors in free-living environments
M Abd Al-Alim, R Mubarak, NM Salem, I Sadek
Computers in Biology and Medicine 179, 108918 , 2024
2024
Citations: 108
Efficient Perovskite Multi-Junction Cell with Twin-Layered Absorber
A Saeed, M Mousa, MM Salah, A Zekry, M Abouelatta, A Shaker, FZ Amer, ...
2024 IEEE 52nd Photovoltaic Specialist Conference (PVSC), 0018-0020 , 2024
2024
An improved CFAR algorithm for multiple environmental conditions
MY Rihan, ZB Nossair, RI Mubarak
Signal, Image and Video Processing 18 (4), 3383-3393 , 2024
2024
Citations: 30
Strong and broadband visible absorption based on titanium patterned resonator
SI Sayed, KR Mahmoud, RI Mubarak
Plasmonics 19 (3), 1145-1152 , 2024
2024
Citations: 15
Memristors Modelling and Simulation for Digital to Analog Converter Circuit
S Mostafa, FZ Amer, MM ElKhatib, RI Mubarak
Russian Microelectronics 53 (2), 188-195 , 2024
2024
Citations: 3
Acoustic energy harvesting using an array of piezoelectric cantilever plates for railways and highways environmental noise
E Hassan, SA Kouritem, FZ Amer, RI Mubarak
Ain Shams Engineering Journal 15 (3), 102461 , 2024
2024
Citations: 34
Accurate Estimation for State of Charge (SoC) using different topologies of LSTM
F Hassan, M El-Bably, RI Mubarak
2024
Deep neural network based for stress detection
M Abd Al-Alim, R Mubarak, NM Salem, I Sadek
Procedia Computer Science 246, 3178-3187 , 2024
2024
Citations: 6
Numerical analysis of carbon-based perovskite tandem solar cells: Pathways towards high efficiency and stability
MM Salah, A Saeed, M Mousa, M Abouelatta, A Zekry, A Shaker, FZ Amer, ...
Renewable and Sustainable Energy Reviews 189, 114041 , 2024
2024
Citations: 14
Design and optimization of broadband metamaterial absorber based on manganese for visible applications
SI Sayed, KR Mahmoud, RI Mubarak
Scientific Reports 13 (1), 11937 , 2023
2023
Citations: 66
Fpga implementation for multiple CFAR algorithms
MY Rihan, ZB Nossair, RI Mubarak
2023 international telecommunications conference (ITC-Egypt), 189-193 , 2023
2023
Citations: 3
New hybrid MPPT technique including artificial intelligence and traditional techniques for extracting the global maximum power from partially shaded PV systems
MZE Masry, A Mohammed, F Amer, R Mubarak
Sustainability 15 (14), 10884 , 2023
2023
Citations: 45
Investigation of high-efficiency and stable carbon-perovskite/silicon and carbon-perovskite/CIGS-GeTe tandem solar cells
A Saeed, MM Salah, A Zekry, M Mousa, A Shaker, M Abouelatta, FZ Amer, ...
Energies 16 (4), 1676 , 2023
2023
Citations: 26
New Hybrid MPPT Technique Including Artificial Intelligence and Traditional Techniques for Extracting the Global Maximum Power from Partially Shaded PV Systems
M Zaghloul-El Masry, A Mohammed, F Amer, R Mubarak
Sustainability 15 (14), 1-30 , 2023
2023
Citations: 3

MOST CITED SCHOLAR PUBLICATIONS

Proceedings of the International Conference on Artificial Intelligence and Computer Vision (AICV2021)
AE Hassanien, A Haqiq, PJ Tonellato, L Bellatreche, S Goundar, AT Azar, ...
Springer Nature , 2021
2021
Citations: 171
A machine-learning approach for stress detection using wearable sensors in free-living environments
M Abd Al-Alim, R Mubarak, NM Salem, I Sadek
Computers in Biology and Medicine 179, 108918 , 2024
2024
Citations: 108
Simulation of optimized high-current tandem solar-cells with efficiency beyond 41%
M Mousa, FZ Amer, RI Mubarak, A Saeed
IEEe Access 9, 49724-49737 , 2021
2021
Citations: 80
Design and optimization of broadband metamaterial absorber based on manganese for visible applications
SI Sayed, KR Mahmoud, RI Mubarak
Scientific Reports 13 (1), 11937 , 2023
2023
Citations: 66
New hybrid MPPT technique including artificial intelligence and traditional techniques for extracting the global maximum power from partially shaded PV systems
MZE Masry, A Mohammed, F Amer, R Mubarak
Sustainability 15 (14), 10884 , 2023
2023
Citations: 45
Conical structures for highly efficient solar cell applications
FMH Korany, MFO Hameed, M Hussein, R Mubarak, MI Eladawy, ...
Journal of Nanophotonics 12 (1), 016019-016019 , 2018
2018
Citations: 35
Acoustic energy harvesting using an array of piezoelectric cantilever plates for railways and highways environmental noise
E Hassan, SA Kouritem, FZ Amer, RI Mubarak
Ain Shams Engineering Journal 15 (3), 102461 , 2024
2024
Citations: 34
An improved CFAR algorithm for multiple environmental conditions
MY Rihan, ZB Nossair, RI Mubarak
Signal, Image and Video Processing 18 (4), 3383-3393 , 2024
2024
Citations: 30
Investigation of high-efficiency and stable carbon-perovskite/silicon and carbon-perovskite/CIGS-GeTe tandem solar cells
A Saeed, MM Salah, A Zekry, M Mousa, A Shaker, M Abouelatta, FZ Amer, ...
Energies 16 (4), 1676 , 2023
2023
Citations: 26
High efficiency tandem perovskite/CIGS solar cell
M Mousa, MM Salah, FZ Amer, A Saeed, RI Mubarak
2020 2nd International Conference on Smart Power & Internet Energy Systems … , 2020
2020
Citations: 23
High-efficiency electron transport layer-free perovskite/GeTe tandem solar cell: numerical simulation
MM Salah, A Zekry, M Abouelatta, A Shaker, M Mousa, FZ Amer, ...
Crystals 12 (7), 878 , 2022
2022
Citations: 22
Quantitative mathematical objective evaluation of contrast-enhanced spectral mammogram in the assessment of response to neoadjuvant chemotherapy and prediction of residual …
AFI Moustafa, RM Kamal, MMM Gomaa, S Mostafa, R Mubarak, ...
Egyptian Journal of Radiology and Nuclear Medicine 50 (1), 44 , 2019
2019
Citations: 17
Strong and broadband visible absorption based on titanium patterned resonator
SI Sayed, KR Mahmoud, RI Mubarak
Plasmonics 19 (3), 1145-1152 , 2024
2024
Citations: 15
Numerical analysis of carbon-based perovskite tandem solar cells: Pathways towards high efficiency and stability
MM Salah, A Saeed, M Mousa, M Abouelatta, A Zekry, A Shaker, FZ Amer, ...
Renewable and Sustainable Energy Reviews 189, 114041 , 2024
2024
Citations: 14
A deep learning approach using wesad data for multi-class classification with wearable sensors
M Abd Al Aleem, R Mubarak, NM Salem, I Sadek
2024 6th Novel Intelligent and Leading Emerging Sciences Conference (NILES … , 2024
2024
Citations: 10
Improving maximum power point tracking of partially shaded photovoltaic system by using IPSO-BELBIC
MAAA El-Garhy, RI Mubarak, M El-Bably
Journal of Instrumentation 12 (08), P08012-P08012 , 2017
2017
Citations: 10
High-efficiency modified tandem solar cell: Simulation of two-absorbers bottom subcell
M Mousa, FZ Amer, RI Mubarak, A Saeed
Optik 251, 168458 , 2022
2022
Citations: 8
Breast cancer detection using polynomial fitting applied on contrast enhanced spectral mammography
S Mostafa, R Mubarak, M El-Adawy, AF Ibrahim, MM Gomaa, RM Kamal
2019 International Conference on Innovative Trends in Computer Engineering … , 2019
2019
Citations: 8
Deep neural network based for stress detection
M Abd Al-Alim, R Mubarak, NM Salem, I Sadek
Procedia Computer Science 246, 3178-3187 , 2024
2024
Citations: 6
Simulation of High open-circuit voltage Perovskite/CIGS-GeTe tandem cell
M Mousa, MM Salah, A Zekry, M Abouelatta, A Shaker, FZ Amer, ...
2022 IEEE 49th Photovoltaics Specialists Conference (PVSC), 1230-1234 , 2022
2022
Citations: 6

Roaa Ibrahim Mohamed Ibrahim Mubarak

EDUCATION

RESEARCH, TEACHING, or OTHER INTERESTS

Scopus Publications

RECENT SCHOLAR PUBLICATIONS

MOST CITED SCHOLAR PUBLICATIONS