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This paper considers the problem of component forensics and proposes a methodology to identify the algorithms and parameters employed by various processing modules inside a digital camera. The proposed analysis techniques are non-intrusive, using only sample output images collected from the camera to find the color filter array pattern; and the algorithm(More)
—In this paper we examine the effect of the receiver blocking problem on the performance of a direct-sequence ad hoc network in which a subset of the nodes employ multiple directional antennas. We present a packet transmission scheduling algorithm and a media access control (MAC) protocol that are designed to exploit the capabilities of the nodes with(More)
—In this paper, we examine a simple method to improve the performance of serial, matched-filter acquisition in direct-sequence spread-spectrum packet radio communications. Each packet transmission includes an acquisition preamble, and the preamble sequence is changed at the boundaries of prede-fined time epochs based on a pseudorandom sequence generator. It(More)
— In this paper we evaluate the performance of a hybrid WLAN network which consists of a mixture of 802.11e nodes and 802.11b nodes. Using simulation, we show that the choice of the contention parameters severely affects the trade-off between the performance improvement at the 802.11e nodes and the performance degradation at the 802.11b nodes. An imperfect(More)
—Three simple, robust distributed channel-access protocols are presented that result in efficient spatial reuse of traffic channels in a direct-sequence spread-spectrum packet radio network consisting of an arbitrary mix of nodes with directional antennas and nodes with omnidirectional antennas. Each protocol uses an RTS/CTS channel-access control-packet(More)
— In this paper we examine a technique to improve the performance of serial, matched-filter acquisition in direct-sequence spread-spectrum packet radio communications. Each packet transmission includes an acquisition preamble, and the preamble sequence is changed at the boundaries of predefined time epochs based on a pseudorandom sequence generator. The(More)
—the paper proposes RecoProd-a recommender system which uses sentiment analysis techniques to provide the best products for the customers. The system uses the existing product reviews upon which sentiment classification is carried out. RecoProd consists of an Information Retrieval component which extracts the reviews from the e-commerce websites using the(More)
We present a new distributed routing protocol for direct-sequence spread-spectrum, mobile ad hoc packet radio networks that contain a mix of nodes with directional antennas and nodes with omnidirectional antennas. Two components of the routing protocol are jointly designed: a new congestion-based link metric that is utilized to identify multiple routes with(More)
With the expansion of ubiquitous computing stages and handheld wireless devices, wireless ad hoc networks had ended up pushed inquire about region in the field of wireless communication so as to give information communications among devices in spite of their physical areas. Media get to control without further ado called as MAC assumes an indispensable part(More)