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Mobile sink plays a pivotal role for data collection in wireless sensor networks (WSNs). But, sensor nodes close to mobile sink are bound to change their routes to Base Station(BS) or mobile sink frequently. As a result, they will generate excessive energy consumption of sensors and cause a very large delivery delay. In this paper, an energy-efficient mechanism for data collection based on single...
This paper looks at the potential of information visualization for multi-device co-located synchronous collaboration. That is, the capability of interactive graphical user interfaces to support face-to-face collaboration with networked devices such as large displays with motion recognition and mobile touchscreen devices. This is done by first considering how information visualization can be developed...
Under the background of large-scale addition of new base stations in CDMA networks, co-PN-offset interferences and adjacent PN-offset interferences are much prone to happen. In this paper, the great significance of PN offset optimization are discussed, three existing methods are described, and a new automatically implemented strategy of PN offset optimization, which is also competent for reasonable...
This is an application research paper on mobile communication service enterprise's fine investment management. In order to make investment decision more accurate, it is very important to consider not only from the financial aspect, but also from the internal business and service operation process of the enterprise. By deeply tracking mobile operation company's business and operation process, combining...
A fair e-commence protocol can help the value-added service provider (VASP) and users deal with the exchange safely and efficiently. In this paper, we firstly analyze a PPV (pay-per-view) protocol, and find some potential shortcomings and limitations. By multiplying the hash chains technology, we employ a couple of hash chains as billing cell, and improve the fairness problem which a cellpsilas loss...
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