Hosam E. Refaat

Work place: Suez Canal University, Faculty of Computers & Informatics, Information System Department Ismailia 41522, Egypt

E-mail: hosam.refaat@ci.suez.edu.eg


Research Interests: Computer systems and computational processes, Autonomic Computing, Parallel Computing, Data Mining, Data Structures and Algorithms


Hosam E Refaat: has graduated from the Faculty of Science, Assuit university, Egypt, in 1998. In October 2006, he finished his Master degree in the field of distributed systems from the faculty of Science, Cairo University, Egypt. Currently, he is a lecturer in Faculty of Computers & Informatics, Suez Canal University, Ismailia, Egypt. His current research interests are Parallel Systems, Cloud Computing, Edge Computing, and Data mining.

Author Articles
MLRTS: Multi-Level Real-Time Scheduling Algorithm for Load Balancing in Fog Computing Environment

By Mohamed A. Elsharkawey Hosam E. Refaat

DOI: https://doi.org/10.5815/ijmecs.2018.02.01, Pub. Date: 8 Feb. 2018

Cloud computing is an innovative technology which is based on the internet to preserve large applications. It is warehoused as a shared data over one platform. In addition, it offers better services to clients who belong to different organizations. In spite of the maximum utilization of computational resources provided by the cloud computing with lower cost, it suffers from specific restrictions. These restrictions are encountered through the load balancing of data in the cloud data centers. These restrictions are represented in the less bandwidth utilization, resource limitations, fault tolerance and security etc. In order to overcome these limitations, new computing model called Fog Computing is presented. It aims to offer the required service of the sensitive data to end users without delaying. The function of the fog computing is similar to the cloud computing with two preferred advantages. The first one is that it is placed more near to the end users to introduce its service in less time. Secondly, it is more valuable for streaming the real time applications, sensor networks, IOT which need high speed and reliable internet connection.
In this paper, a novel load balancing algorithm has been proposed over a novel architectural model in the Fog Computing environment. The proposed model aims to serve the real-time tasks within their deadline. In addition, it serves the different soft tasks without starving. The soft tasks are classified according to the execution time and the priority levels. In addition, they are served according to their waiting time and priority-level. Furthermore, the proposed algorithm is employed to maximize the throughput, the resources and the network utilization and preserving the data consistency with less complexity to accomplish the end users demand.

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CVSHR: Enchantment Cloud-based Video Streaming using the Heterogeneous Resource Allocation

By Mohamed A. Elsharkawey Hosam E. Refaat

DOI: https://doi.org/10.5815/ijcnis.2017.09.01, Pub. Date: 8 Sep. 2017

The Video requests can be streamed in two forms. They are the live streaming and the on-demand streaming. Both of them should be adapted (I.e., transcoded) to fit the characteristics (e.g., spatial resolution, bit rate… and the supported formats) of client devices. Therefore, many streaming service providers are presented the cloud services to be utilized in the video transcoding. But, the introducing of the cloud services for video transcoding is encountered by the contradiction between the deploying cloud resources in a cost-ef?cient without any major influence on the quality of video streams. In order to address this problem, this paper presents an Enchantment Cloud-based Video Streaming using the Heterogeneous Resource Allocation (CVSHR) to transcode the video streams on cloud resources in an efficient manner with the QoS of the requested video stream. The system architecture is elastic and based on multiple heterogeneous clusters that provide a great flexible resource allocation and De-allocation strategy. This strategy aims to assign a suitable VM with adequate resources based on the GOPs characteristic. Also, it can reassign the unused resources. In addition, the number of VMs can be extended as the system necessity. Finally, The CVSHR is simulated and evaluated on truthful cloud resources and various workload circumstances.

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