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Elghazali S.M.S.,Information Technology Institute
Journal of Engineering and Applied Science | Year: 2011

The challenge of Automatic Vehicle Location "AVL" over wide areas and large distances is evident. Recent studies have revealed that one of the most critical components of a successful autonomous vehicle was the reliability of accurate positioning. Automatic vehicle location systems calculate real-time location of any vehicle equipped with a Global Positioning Satellite "GPS" receiver. Data are then transmitted to the transit center with use of radio or cellular communications and can be used immediately for daily operations as well as archived for further analysis. There exist a number of commercially available vehicle tracking application software packages which are usually delivered on the basis of a single license for each vehicle and in many cases do not meet the specific requirements of different users. The cost of the software component can be extremely high with increasing vehicle numbers. In this paper a stand-alone application is developed using GIS Map Window, an open source software "OSS" technology available free of charge from the internet and is customized using GIS Application Programming Interface "API", enabling building a product tailored to suit users exact needs. The developed AVL system can operate on ready made maps, Google maps, or user own developed maps. The paper discuses the concepts and components of AVL, G3 technology ,fGPS, GSM and GIS" , and presents the developed AVL application with snap shots demonstrating various system capabilities such as tracking module, street locator module^land mark module, as well as navigation module. Source

Lotfy A.E.,Information Technology Institute | Saleh A.I.,Mansoura University | El-Ghareeb H.A.,Mansoura University | Ali H.A.,Mansoura University
Journal of King Saud University - Computer and Information Sciences | Year: 2016

The main objective of this paper is to keep the strengths of RDBMSs as consistency and ACID properties and at the same time providing the benefits that inspired the NoSQL movement through a middle layer. The proposed middle layer uses a four phase commit protocol to ensure: the use of recent data, the use of the Pessimistic technique to forbid others dealing with data while it is used and the data updates residing in many locations to avoid the loss of data and disappointment. This mechanism is required, especially in distributed database application NoSQL based environment, because allowing conflicting transactions to continue not only wastes constrained computing power and decreases bandwidth, but also exacerbates conflicts. The middle layer keeps tracking all running transactions and manages with other layers the execution of concurrent transactions. This solution will help increase both of the scalability, and throughput. Finally, the experimental results show that the throughput of the system improves on increasing the number of middle layers in scenarios and the amount of updates to read in a transaction increases. Also the data are consistent with executing many transactions related to each other through updating the same data. The scalability and availability of the system is not affected while ensuring strict consistency. © 2015 The Authors. Source

Ayatollahi Tabatabaii H.S.,Sharif University of Technology | Khansari M.,Information Technology Institute | Rabiee H.R.,Sharif University of Technology
2010 5th International Symposium on Telecommunications, IST 2010 | Year: 2010

Recently it has been shown that network coding can highly improve the network throughput in the communication systems and specifically increase the downloading performance in P2P networks. This paper presents a new live streaming system for GIA-based P2P networks. In the proposed system the traditional GIA protocol is improved for an efficient use in multimedia applications. We introduce a new mesh-pull layered video streaming framework for GIA-based systems and employ random network coding to improve the network performance. Random network coding algorithm enables each peer to send a single encoded video chunk instead of multiple video blocks toward the destination node and save its downloading and uploading bandwidths to a great extent. Comparison of our new GIA-based live streaming system with the traditional GIA demonstrates that this system can achieve a significant improvement in total end-to-end delay, network throughput and redundancy of bandwidth usage. © 2010 IEEE. Source

Geissbuhler A.,University of Geneva | Hammond W.E.,Duke Center for Health Informatics | Hasman A.,University of Amsterdam | Hussein R.,Information Technology Institute | And 10 more authors.
Methods of Information in Medicine | Year: 2013

This article is part of a For-Discussion-Sec-tion of Methods of Information in Medicine about the paper Biomedical Informatics: We Are What We Publish, written by Peter L. Elkin, Steven H. Brown, and Graham Wright. It is introduced by an editorial. This article contains the combined commenta -ries invited to independently comment on the Elkin et al. paper. In subsequent issues the discussion can continue through letters to the editor. © Schattauer 2013. Source

Kilany A.,Information Technology Institute | Abdelrasoul M.,Alexandria University | Shalaby A.,Alexandria University | Sayed M.S.,Alexandria University | Sayed M.S.,Zagazig University
Proceedings of the International Conference on Microelectronics, ICM | Year: 2016

Recently, HEVC standard have been proposed as a solution for transmitting high quality videos with half bit rate compared to the previous H.264 standard. One of the main properties of the new standard is the variety of the transform unit sizes. In this paper, we propose a new reconfigurable pipelined architecture for Inverse Discrete Cosine transform, which is used in both the HEVC encoder and decoder. Our circuit supports all the transform block sizes with reusability and reconfigurability of the different circuit parts. Our proposed architecture implemented on TSMC 65nm, runs at clock frequency of 500 MHz, and achieves throughput of 1990 Mpixel/sec that is more than the best architecture in the literature, to the best of our knowledge, by about 42%. The proposed architecture can process UHD video resolutions up to 8K with 60 fps. © 2015 IEEE. Source

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