Current Issue
Sana'a University Journal of Applied Sciences and Technology
Vol. 1 No. 3 (2023)
2023-09-20
7 Articles
The first volume - the third issue in the Sana'a University Journal of Applied Sciences and Technology
Article
7 Articles
How to Cite This Article
Shaima Ali Ahmed Al-Aghbary (Author) (%2023). Investigation of the Structural and Mechanical Properties of ((82-X) Sn –XCu -18 In) % Alloy with X= 1,2,3,4and 5. Sana'a University Journal of Applied Sciences and Technology. https://doi.org/10.59628/jast.v1i3.487
Shaima Ali Ahmed Al-Aghbary (Author) "Investigation of the Structural and Mechanical Properties of ((82-X) Sn –XCu -18 In) % Alloy with X= 1,2,3,4and 5" Sana'a University Journal of Applied Sciences and Technology (%2023): . Web.
Shaima Ali Ahmed Al-Aghbary (Author) "Investigation of the Structural and Mechanical Properties of ((82-X) Sn –XCu -18 In) % Alloy with X= 1,2,3,4and 5" Sana'a University Journal of Applied Sciences and Technology %2023): .
Shaima Ali Ahmed Al-Aghbary (Author) (%2023) 'Investigation of the Structural and Mechanical Properties of ((82-X) Sn –XCu -18 In) % Alloy with X= 1,2,3,4and 5', Sana'a University Journal of Applied Sciences and Technology.
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How to Cite This Article
Shaima Ali Ahmed Al-Aghbary (Author) (%2023). Investigation of the Structural and Mechanical Properties of ((82-X) Sn –XCu -18 In) % Alloy with X= 1,2,3,4and 5. Sana'a University Journal of Applied Sciences and Technology. https://doi.org/10.59628/jast.v1i3.487
Shaima Ali Ahmed Al-Aghbary (Author) "Investigation of the Structural and Mechanical Properties of ((82-X) Sn –XCu -18 In) % Alloy with X= 1,2,3,4and 5" Sana'a University Journal of Applied Sciences and Technology (%2023): . Web.
Shaima Ali Ahmed Al-Aghbary (Author) "Investigation of the Structural and Mechanical Properties of ((82-X) Sn –XCu -18 In) % Alloy with X= 1,2,3,4and 5" Sana'a University Journal of Applied Sciences and Technology %2023): .
Shaima Ali Ahmed Al-Aghbary (Author) (%2023) 'Investigation of the Structural and Mechanical Properties of ((82-X) Sn –XCu -18 In) % Alloy with X= 1,2,3,4and 5', Sana'a University Journal of Applied Sciences and Technology.
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The effective beam width of a partially coherent rectangular mul-ti-Gaussian Schell-model vortex beam propagating in a turbulent plasma
H. O. AL-Nadary, Abdu Ahmed Alkelly, M. A. H. Khaled, Labiba F. Hassan (Author)
2023-09-20
Abstract
Based on the derived analytical formulae for the optical intensity and effective beam width of a partially coherent rectangular multi-Gaussian Schell-model (RMGSM) vortex beam, we analyzed the evolution of the effective beam width of a partially coherent RMGSM vortex beam propagating in an anisotropic turbulent plasma using numerical examples. The numerical results demonstrated that the effective beam widths in the x and y directions were similar. In studies on the influences of the source parameters, one can see that an RMGSM vortex beam with a larger topological charge and beam waist or a smaller correlation coefficient σ evolves into a beam with a larger effective beam width. However, the influence of beam order was not evident. In addition, numerical examples proved that the effective beam width increases with increasing propagation distance and refractive index fluctuation variance or decreasing anisotropy parameter , outer scale , and inner scale . This study's results will be beneficial for applications in free-space optical communications.
Keywords
Effective beam width
Partially coherent
Rectangular multi-Gaussian Schell-model
Turbulent plasma
How to Cite This Article
H. O. AL-Nadary, Abdu Ahmed Alkelly, M. A. H. Khaled, Labiba F. Hassan (Author) (%2023). The effective beam width of a partially coherent rectangular mul-ti-Gaussian Schell-model vortex beam propagating in a turbulent plasma . Sana'a University Journal of Applied Sciences and Technology. https://doi.org/10.59628/jast.v1i3.494
H. O. AL-Nadary, Abdu Ahmed Alkelly, M. A. H. Khaled, Labiba F. Hassan (Author) "The effective beam width of a partially coherent rectangular mul-ti-Gaussian Schell-model vortex beam propagating in a turbulent plasma " Sana'a University Journal of Applied Sciences and Technology (%2023): . Web.
H. O. AL-Nadary, Abdu Ahmed Alkelly, M. A. H. Khaled, Labiba F. Hassan (Author) "The effective beam width of a partially coherent rectangular mul-ti-Gaussian Schell-model vortex beam propagating in a turbulent plasma " Sana'a University Journal of Applied Sciences and Technology %2023): .
H. O. AL-Nadary, Abdu Ahmed Alkelly, M. A. H. Khaled, Labiba F. Hassan (Author) (%2023) 'The effective beam width of a partially coherent rectangular mul-ti-Gaussian Schell-model vortex beam propagating in a turbulent plasma ', Sana'a University Journal of Applied Sciences and Technology.
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How to Cite This Article
H. O. AL-Nadary, Abdu Ahmed Alkelly, M. A. H. Khaled, Labiba F. Hassan (Author) (%2023). The effective beam width of a partially coherent rectangular mul-ti-Gaussian Schell-model vortex beam propagating in a turbulent plasma . Sana'a University Journal of Applied Sciences and Technology. https://doi.org/10.59628/jast.v1i3.494
H. O. AL-Nadary, Abdu Ahmed Alkelly, M. A. H. Khaled, Labiba F. Hassan (Author) "The effective beam width of a partially coherent rectangular mul-ti-Gaussian Schell-model vortex beam propagating in a turbulent plasma " Sana'a University Journal of Applied Sciences and Technology (%2023): . Web.
H. O. AL-Nadary, Abdu Ahmed Alkelly, M. A. H. Khaled, Labiba F. Hassan (Author) "The effective beam width of a partially coherent rectangular mul-ti-Gaussian Schell-model vortex beam propagating in a turbulent plasma " Sana'a University Journal of Applied Sciences and Technology %2023): .
H. O. AL-Nadary, Abdu Ahmed Alkelly, M. A. H. Khaled, Labiba F. Hassan (Author) (%2023) 'The effective beam width of a partially coherent rectangular mul-ti-Gaussian Schell-model vortex beam propagating in a turbulent plasma ', Sana'a University Journal of Applied Sciences and Technology.
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Suggestion Cybersecurity Framework (CSF) for Reducing Cyber-Attacks on Information Systems
Abdulkarem Yahya Abohatem , Fadl M.M. Ba-Alwi, Abdualmajed Ahmed Al-Khulaidi (Author)
2023-09-20
Abstract
This study conducts a comprehensive analysis of different standards frameworks in cybersecurity to identify best practices and international standards. The primary objective is to propose an appropriate cybersecurity framework that aligns with global standards, effectively reducing the risks of cyberattacks and threats to data, information, networks, and devices within institutions. By enhancing cybersecurity, the framework aims to safeguard infrastructure. It further contributes to improved management of cybersecurity risks by incorporating the best global practices and local cybersecurity legislation. Through an examination of various cybersecurity frameworks, including NIST 800-53Ar4, COBIT, and ISO27002, the study finds that NIST 800-53Ar4 is the most effective framework. The researcher recommended adopting a hybrid approach that combines elements from multiple frameworks and standards.
Keywords
Cybersecurity
(CSF) Cybersecurity Framework
(CA)Cyber-Attack
How to Cite This Article
Abdulkarem Yahya Abohatem , Fadl M.M. Ba-Alwi, Abdualmajed Ahmed Al-Khulaidi (Author) (%2023). Suggestion Cybersecurity Framework (CSF) for Reducing Cyber-Attacks on Information Systems. Sana'a University Journal of Applied Sciences and Technology. https://doi.org/10.59628/jast.v1i3.248
Abdulkarem Yahya Abohatem , Fadl M.M. Ba-Alwi, Abdualmajed Ahmed Al-Khulaidi (Author) "Suggestion Cybersecurity Framework (CSF) for Reducing Cyber-Attacks on Information Systems" Sana'a University Journal of Applied Sciences and Technology (%2023): . Web.
Abdulkarem Yahya Abohatem , Fadl M.M. Ba-Alwi, Abdualmajed Ahmed Al-Khulaidi (Author) "Suggestion Cybersecurity Framework (CSF) for Reducing Cyber-Attacks on Information Systems" Sana'a University Journal of Applied Sciences and Technology %2023): .
Abdulkarem Yahya Abohatem , Fadl M.M. Ba-Alwi, Abdualmajed Ahmed Al-Khulaidi (Author) (%2023) 'Suggestion Cybersecurity Framework (CSF) for Reducing Cyber-Attacks on Information Systems', Sana'a University Journal of Applied Sciences and Technology.
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How to Cite This Article
Abdulkarem Yahya Abohatem , Fadl M.M. Ba-Alwi, Abdualmajed Ahmed Al-Khulaidi (Author) (%2023). Suggestion Cybersecurity Framework (CSF) for Reducing Cyber-Attacks on Information Systems. Sana'a University Journal of Applied Sciences and Technology. https://doi.org/10.59628/jast.v1i3.248
Abdulkarem Yahya Abohatem , Fadl M.M. Ba-Alwi, Abdualmajed Ahmed Al-Khulaidi (Author) "Suggestion Cybersecurity Framework (CSF) for Reducing Cyber-Attacks on Information Systems" Sana'a University Journal of Applied Sciences and Technology (%2023): . Web.
Abdulkarem Yahya Abohatem , Fadl M.M. Ba-Alwi, Abdualmajed Ahmed Al-Khulaidi (Author) "Suggestion Cybersecurity Framework (CSF) for Reducing Cyber-Attacks on Information Systems" Sana'a University Journal of Applied Sciences and Technology %2023): .
Abdulkarem Yahya Abohatem , Fadl M.M. Ba-Alwi, Abdualmajed Ahmed Al-Khulaidi (Author) (%2023) 'Suggestion Cybersecurity Framework (CSF) for Reducing Cyber-Attacks on Information Systems', Sana'a University Journal of Applied Sciences and Technology.
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Localized Plastic Deformation and Microstructure Properties of Al/Si Alloy Improved with Al3Ni Compound
Shakib Alsowidy (Author)
2023-09-20
Abstract
The microstructure of AS10/xNi hypoeutectic alloys with (x = 0.01% and 0.05%) was investigated using X-ray diffraction (XRD) and scanning electron microscopy (SEM). Localized permanent plastic deformation (Vickers hardness (HV)) was conducted on the samples before and after sintering. After sintering, the results showed a significant improvement in hardness with the addition of Ni atoms. From the XRD map, it was found that there was a shift in the peak positions as the Ni atoms were added. This shift is a result of the incoincidence of dhkl levels in the Al-phase before and after the addition of Ni. This mismatch in dhkl levels is associated with the lattice defects and lattice parameters. From the SEM images, the silicon powder particles in the binary composition are large and elongated plates, whereas those in the ternary composition are small and semi-spherical particles. This reduction in the particle size of the modified alloy is attributed to the presence of Ni atoms in the alloys.
Keywords
hypoeutectic
Vickers Hardness
Microstructure
mismatch
modified
XRD
Al/Si
How to Cite This Article
Shakib Alsowidy (Author) (%2023). Localized Plastic Deformation and Microstructure Properties of Al/Si Alloy Improved with Al3Ni Compound. Sana'a University Journal of Applied Sciences and Technology. https://doi.org/10.59628/jast.v1i3.522
Shakib Alsowidy (Author) "Localized Plastic Deformation and Microstructure Properties of Al/Si Alloy Improved with Al3Ni Compound" Sana'a University Journal of Applied Sciences and Technology (%2023): . Web.
Shakib Alsowidy (Author) "Localized Plastic Deformation and Microstructure Properties of Al/Si Alloy Improved with Al3Ni Compound" Sana'a University Journal of Applied Sciences and Technology %2023): .
Shakib Alsowidy (Author) (%2023) 'Localized Plastic Deformation and Microstructure Properties of Al/Si Alloy Improved with Al3Ni Compound', Sana'a University Journal of Applied Sciences and Technology.
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How to Cite This Article
Shakib Alsowidy (Author) (%2023). Localized Plastic Deformation and Microstructure Properties of Al/Si Alloy Improved with Al3Ni Compound. Sana'a University Journal of Applied Sciences and Technology. https://doi.org/10.59628/jast.v1i3.522
Shakib Alsowidy (Author) "Localized Plastic Deformation and Microstructure Properties of Al/Si Alloy Improved with Al3Ni Compound" Sana'a University Journal of Applied Sciences and Technology (%2023): . Web.
Shakib Alsowidy (Author) "Localized Plastic Deformation and Microstructure Properties of Al/Si Alloy Improved with Al3Ni Compound" Sana'a University Journal of Applied Sciences and Technology %2023): .
Shakib Alsowidy (Author) (%2023) 'Localized Plastic Deformation and Microstructure Properties of Al/Si Alloy Improved with Al3Ni Compound', Sana'a University Journal of Applied Sciences and Technology.
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Development Metrics for Intelligent Systems
Motea.M. Aljafare, Mansoor N. Ali Marhoob (Author)
2023-09-20
Abstract
The existence of metrics for Intelligent systems is very important in order to evaluate, manage, and classify them. Intelligent information systems (IIS) have become a significant part of our daily lives, institutions, and ongoing business, and it has become necessary to have metrics for Intelligent systems in order to measure the success of organizations in using Intelligent systems. In this study, We will choose a group of metrics for intelligent systems, work to develop them, and then determine their source and method of mitigation. It defines the phrase "intelligent systems metrics" and goes over the key metrics and guidelines that can be used to define IISM as well as which metrics have the biggest influence. The significance of each metric in gauging various intelligent systems will be determined, and when these metrics have been reviewed, the effects of each criterion on IIS will be clear.
Keywords
Metrics
intelligence
Intelligent systems
How to Cite This Article
Motea.M. Aljafare, Mansoor N. Ali Marhoob (Author) (%2023). Development Metrics for Intelligent Systems . Sana'a University Journal of Applied Sciences and Technology. https://doi.org/10.59628/jast.v1i3.294
Motea.M. Aljafare, Mansoor N. Ali Marhoob (Author) "Development Metrics for Intelligent Systems " Sana'a University Journal of Applied Sciences and Technology (%2023): . Web.
Motea.M. Aljafare, Mansoor N. Ali Marhoob (Author) "Development Metrics for Intelligent Systems " Sana'a University Journal of Applied Sciences and Technology %2023): .
Motea.M. Aljafare, Mansoor N. Ali Marhoob (Author) (%2023) 'Development Metrics for Intelligent Systems ', Sana'a University Journal of Applied Sciences and Technology.
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How to Cite This Article
Motea.M. Aljafare, Mansoor N. Ali Marhoob (Author) (%2023). Development Metrics for Intelligent Systems . Sana'a University Journal of Applied Sciences and Technology. https://doi.org/10.59628/jast.v1i3.294
Motea.M. Aljafare, Mansoor N. Ali Marhoob (Author) "Development Metrics for Intelligent Systems " Sana'a University Journal of Applied Sciences and Technology (%2023): . Web.
Motea.M. Aljafare, Mansoor N. Ali Marhoob (Author) "Development Metrics for Intelligent Systems " Sana'a University Journal of Applied Sciences and Technology %2023): .
Motea.M. Aljafare, Mansoor N. Ali Marhoob (Author) (%2023) 'Development Metrics for Intelligent Systems ', Sana'a University Journal of Applied Sciences and Technology.
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Developing a Model for Offline Signature Verification Using CNN Architectures and Genetic Algorithm
Abdulbaset Mohammed Qaied Musleh, Abdoulwase Mohammed Obaid Al-Azzani (Author)
2023-09-20
Abstract
The signature verification process has many applications, such as its use in financial operations, providing the electronic signature of documents, and providing an additional confidentiality standard to verify the identity of users in computer systems. This process has the advantage of being accepted by the community and is less intrusive compared to other biological methods. Deep learning (DL) and CNN (Convolutional Neural Network) are widely used by bioinformaticians. Due to the difficulty in extracting features in other systems or models, DL and CNN-based signature verification systems have been significantly improved. Yet Hyperparameter optimization for CNN models remains a challenging problem in designing highly efficient models with the most accurate results. It is often convolutional neural network (CNN) models that are manually designed. The proposed method is focused on a genetic algorithm that develops a population of CNN models in order to find the best fit architecture for designing an offline signature verification model. Our model is tested on more than one dataset, BHSig260-Bengali, BHSig260-Hindiin, GPDS, and CEDAR. The result of the approach proposed in this paper has the highest discrimination rate of FRR of 2.5, FAR 3.2, EER 2.35, and 97.73 %-accuracy rate.
Keywords
Offline Signature Verification
Convolutional Neural Network (CNN)
Deep Learning (DL)
Genetic Algorithm (GA)
How to Cite This Article
Abdulbaset Mohammed Qaied Musleh, Abdoulwase Mohammed Obaid Al-Azzani (Author) (%2023). Developing a Model for Offline Signature Verification Using CNN Architectures and Genetic Algorithm. Sana'a University Journal of Applied Sciences and Technology. https://doi.org/10.59628/jast.v1i3.314
Abdulbaset Mohammed Qaied Musleh, Abdoulwase Mohammed Obaid Al-Azzani (Author) "Developing a Model for Offline Signature Verification Using CNN Architectures and Genetic Algorithm" Sana'a University Journal of Applied Sciences and Technology (%2023): . Web.
Abdulbaset Mohammed Qaied Musleh, Abdoulwase Mohammed Obaid Al-Azzani (Author) "Developing a Model for Offline Signature Verification Using CNN Architectures and Genetic Algorithm" Sana'a University Journal of Applied Sciences and Technology %2023): .
Abdulbaset Mohammed Qaied Musleh, Abdoulwase Mohammed Obaid Al-Azzani (Author) (%2023) 'Developing a Model for Offline Signature Verification Using CNN Architectures and Genetic Algorithm', Sana'a University Journal of Applied Sciences and Technology.
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How to Cite This Article
Abdulbaset Mohammed Qaied Musleh, Abdoulwase Mohammed Obaid Al-Azzani (Author) (%2023). Developing a Model for Offline Signature Verification Using CNN Architectures and Genetic Algorithm. Sana'a University Journal of Applied Sciences and Technology. https://doi.org/10.59628/jast.v1i3.314
Abdulbaset Mohammed Qaied Musleh, Abdoulwase Mohammed Obaid Al-Azzani (Author) "Developing a Model for Offline Signature Verification Using CNN Architectures and Genetic Algorithm" Sana'a University Journal of Applied Sciences and Technology (%2023): . Web.
Abdulbaset Mohammed Qaied Musleh, Abdoulwase Mohammed Obaid Al-Azzani (Author) "Developing a Model for Offline Signature Verification Using CNN Architectures and Genetic Algorithm" Sana'a University Journal of Applied Sciences and Technology %2023): .
Abdulbaset Mohammed Qaied Musleh, Abdoulwase Mohammed Obaid Al-Azzani (Author) (%2023) 'Developing a Model for Offline Signature Verification Using CNN Architectures and Genetic Algorithm', Sana'a University Journal of Applied Sciences and Technology.
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Hierarchical Blockchain as Line Defense of Attacks to Messages Propagation in VANET
Firdaus AlHrazi, Malek Algabri, Abdualmajed Ahmed Al-Khulaidi (Author)
2023-09-20
Abstract
The Vehicle Network (VANET) is a component of the Intelligent Transport System (ITS), for the exchange of messages between vehicles and roadside units (RSU). While due to the increase in the number of vehicles, there have been a lot of privacy, trust, and security challenges related to the Vehicle Network (VANET). The information exchanged between vehicles must be correct to achieve the CIA principle. Trust, privacy, and security solutions don’t apply to centralized networks. Most importantly, the lack of confidentiality, privacy, and availability. In this paper, solutions to solve security problems using hierarchical blockchain technology will be presented. Hierarchical blockchain has the advantages of unanimously emphasizing message credibility, decentralization, and immutable storage. All these advantages will provide solutions to those problems and challenges related to the security of VANETs. This paper seeks two main objectives. The first is to monitor malicious and no malicious vehicles by UAV, to validate the message before sending it via VANET. The second is a set of complex rules and specific calculations to verify the message. Consensus algorithms are also used to agree among vehicles on what is true, and to evaluate performance using the following metrics (Throughput, tolerance, latency).
Keywords
Blockchain
Line Defense
Attacks
Propagation
VANET
Ad-hoc Network
UVA
How to Cite This Article
Firdaus AlHrazi, Malek Algabri, Abdualmajed Ahmed Al-Khulaidi (Author) (%2023). Hierarchical Blockchain as Line Defense of Attacks to Messages Propagation in VANET. Sana'a University Journal of Applied Sciences and Technology. https://doi.org/10.59628/jast.v1i3.370
Firdaus AlHrazi, Malek Algabri, Abdualmajed Ahmed Al-Khulaidi (Author) "Hierarchical Blockchain as Line Defense of Attacks to Messages Propagation in VANET" Sana'a University Journal of Applied Sciences and Technology (%2023): . Web.
Firdaus AlHrazi, Malek Algabri, Abdualmajed Ahmed Al-Khulaidi (Author) "Hierarchical Blockchain as Line Defense of Attacks to Messages Propagation in VANET" Sana'a University Journal of Applied Sciences and Technology %2023): .
Firdaus AlHrazi, Malek Algabri, Abdualmajed Ahmed Al-Khulaidi (Author) (%2023) 'Hierarchical Blockchain as Line Defense of Attacks to Messages Propagation in VANET', Sana'a University Journal of Applied Sciences and Technology.
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How to Cite This Article
Firdaus AlHrazi, Malek Algabri, Abdualmajed Ahmed Al-Khulaidi (Author) (%2023). Hierarchical Blockchain as Line Defense of Attacks to Messages Propagation in VANET. Sana'a University Journal of Applied Sciences and Technology. https://doi.org/10.59628/jast.v1i3.370
Firdaus AlHrazi, Malek Algabri, Abdualmajed Ahmed Al-Khulaidi (Author) "Hierarchical Blockchain as Line Defense of Attacks to Messages Propagation in VANET" Sana'a University Journal of Applied Sciences and Technology (%2023): . Web.
Firdaus AlHrazi, Malek Algabri, Abdualmajed Ahmed Al-Khulaidi (Author) "Hierarchical Blockchain as Line Defense of Attacks to Messages Propagation in VANET" Sana'a University Journal of Applied Sciences and Technology %2023): .
Firdaus AlHrazi, Malek Algabri, Abdualmajed Ahmed Al-Khulaidi (Author) (%2023) 'Hierarchical Blockchain as Line Defense of Attacks to Messages Propagation in VANET', Sana'a University Journal of Applied Sciences and Technology.
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