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    A Study of the Effects of H.264 Encoding Parameters on Video Streaming Quality Over Lossy Networks

    , M.Sc. Thesis Sharif University of Technology Azad Disfany, Reza (Author) ; Pakravan, Mohammad Reza (Supervisor) ; Shirmohammadi, Shervin (Co-Advisor)
    Abstract
    Due to the expansion of Data Networks and the ubiquity of high speed Internet, new services especially multimedia services have become more popular. Video streaming is one such service, but video data are quite bulky and need to be compressed for transmission since the network has limited bandwidth. This compression is achieved through a video encoder, such as H.264, which is currently the most advanced video encoder. In addition, the network introduces lag in the form of packet loss, delay and jitter which adversely affect real-time video applications.
    In this thesis, we try to answer the following question in the context of a video streaming application: what encoding parameters should... 

    Uranium Extraction from Waste Streams of ZPP Plant

    , M.Sc. Thesis Sharif University of Technology Azhdeh, Sahar (Author) ; Samadfam, Mohamad (Supervisor) ; Farhadi, Amir Hossein (Co-Advisor)
    Abstract
    Uranium recovery from wastes produced in every stage of nuclear fuel cycle is very important from both the economic and environmental points of view. Zircon, zirconium-containing ore that is the input feed to Zirconium sponge production factories, contains considerable amounts of uranium compounds. The majority of this uranium will enter to the different waste streams of the plant. In this study, by analyzing the waste streams of the Zirconium Production Plant (ZPP) located at Isfahan, Iran, total mass balance of uranium in waste streams was identified. It was concluded that bottom residuals at furnaces of the chlorination unit is the primary uranium-containing waste stream. The preliminary... 

    Investigating the Role of Knowledge Management Processes in Reducing Waste

    , M.Sc. Thesis Sharif University of Technology Maleki, Hoomaan (Author) ; Houshmand, Mahmoud (Supervisor)
    Abstract
    This research investigates the role and effects of knowledge management processes in reducing both cost and waste at the Dorsa Leather Goods Company. This methodology is based on both qualitative and quantitative research methods. The qualitative stage consists of analysis of past research and interviews with all levels of management. This stage leads to identifying knowledge management factors, effective in reducing cost and waste. Subsequently, we identified five main aspects encompassing all the effective aforementioned factors. These aspects are strategic, organizational structure, human resource, organizational culture, and technological infrastructure.The quantitative stage is...