Fatma Omara - Academia.edu (original) (raw)

Fatma Omara

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University of Liverpool online programme with Laureate

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Papers by Fatma Omara

ABSTRACT Unfortunately, the Grid Computing doesn't support the business collaboration nee... more ABSTRACT Unfortunately, the Grid Computing doesn't support the business collaboration needs, due to many issues, e.g. the lack of standards for the Grid services. Although, the Grid infrastructure faces big challenges in interoperability, the Open Grid Services Architecture (OGSA) has been developed for the Grid applications. We believe that the cloud environment can be converged with the Grid environment, where the cloud might possibly act as on-demand hosting, while the grid might act as a federation as a service. Till now, there is no clear roadmap for building Dynamic Virtual Organization based on Grid/Cloud environment. According to the work of this paper, a Collaboration Network Organization (CNO) Grid-Cloud Convergence Architecture (CNOGCA) based on OGSA has been proposed. Also, a roadmap to design CNO architecture based on Grid-Cloud convergence, and other paradigms in an incremental and harmonious fashion have been defined. The OGSA frameworks as well as it extends and integrate with the recent work Federated CNO Model (FCNOM) have been utilized. In addition, the essential features that must be considered in order to design CNO architecture based on Grid-Cloud convergence, as well as, the description of the landscape structure for harmonious fashion have been determined.

Most existing realizations of quantum key distribution (QKD) are point-to-point systems with one ... more Most existing realizations of quantum key distribution (QKD) are point-to-point systems with one source transferring to only one destination. Growth of these single-receiver systems has now achieved a reasonably sophisticated point. However, many communication systems operate in a point-to-multi-point (Multicast) configuration rather than in point-to-point mode, so it is crucial to demonstrate compatibility with this type of network in order to maximize the application range for QKD. Although encryption algorithms can be used to secure transmitted messages among group members, there are many security aspects for designing a secured multicast cryptosystem are needed to investigate. The most important aspects of multicasting are key generation and management. The researchers have proposed several approaches for solving problems of multicast key distribution and management. Therefore, we proposed four different architectures for implementing a multicast quantum key distribution with supportive protocols for generating and securing the transmitted messages among the communicated participants.

International Journal of Sensor Networks, 2020

International Journal of Advanced Computer Science and Applications, 2016

Cluster Computing, Jun 18, 2021

International journal of grid and distributed computing, Oct 31, 2015

International Journal of Advanced Computer Science and Applications, 2016

Studies in computational intelligence, 2009

Scientific Reports, Feb 13, 2023

International Conference on Aerospace Sciences & Aviation Technology, May 1, 2003

International journal of computer applications, Sep 17, 2015

International journal of grid and distributed computing, Jul 31, 2016

ABSTRACT This paper describes a concept of algorithm dedicated to video compression. In our appro... more ABSTRACT This paper describes a concept of algorithm dedicated to video compression. In our approach we use an algorithm named the predictive vector quantization (PVQ). Into this scheme of image compression a competitive neural networks quantizer and a neural networks predictor are incorporated. In our paper, we extend this neural image compression approach to a new method of video compression. We also used the image histogram method to detect scene changes, what have to improve the video compression performance. The experimental results are presented and discussed.