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Cryptography is a technique by which the stored and transferred data in a particular form can be comprehended and processed by only those, who it is intended for. In the modern era, cryptography is most often associated with the deception of the plaintext into a cipher text using a process called Encryption then back to the original plaintext using a process called Decryption. Strong cryptography...
A spatial preference query ranks the objects based on the quality of features in their spatial neighborhood. There are several indexing techniques used in the past for storage and retrieval of spatial data. In this approach, suitable indexing techniques has been applied for multi dimensional spatial objects. A spatial model has been designed using R Tree and R+-Tree, with real estate dimensional spaces...
When objects are occluded they are obtruded from human vision. A new means has been proposed to track such occluded objects. This paper proposes a novel approach to detect and track occluded moving objects. A Kalman Filter Bank (KFB) approach has been used to predict the motion of the moving targets using the current state and the previous few states. Based on the linearity level the corresponding...
Orthogonal Frequency Division Multiple Access (OFDMA) based cellular network can support diverse requirement of multimedia traffic. OFDMA method using adaptive modulation and coding technique can increase the system capacity many fold. In order to meet dynamic bandwidth requirement in downlink, an efficient resource allocation method called Two Stage Rate Adaptive (TSRA) algorithm is proposed here...
Because of bursty high data rate and delay sensitive nature of high quality multimedia application, the resource allocation in wireless network to meet its quality of service (QoS) has become the most challenging and interesting issue. Orthogonal Frequency Division Multiple Access (OFDMA) employing adaptive channel allocation technique can support these requirement while increasing the system capacity...
The next generation cellular wireless network is expected to provide a broad range of multimedia services, where the traffic asymmetry between uplink and downlink is significant. The code division multiple access system with time division duplex mode (TDD-CDMA), adopting unbalanced slot allocation between uplink and downlink, is a good solution for this traffic asymmetry. Here a QoS adaptive multimedia...
This paper presents a new algorithm for a geometric approach to evaluate the boundaries of controllable power flow with a UPFC installed in a two-machine power system considering the constraints of converter ratings of the UPFC and also the line losses. Similar studies earlier had ignored the line losses due to resistance of the line. Using a geometrical approach, the analysis of the effect of placement...
The limits of controllable power flow in the transmission line with the UPFC are determined by the equipment ratings and the line limits. In this paper, boundaries of controllable power flow in a simple two machine power system with UPFC based on a geometrical approach are investigated. The main advantage of this geometrical approach is that even with a minimum computational effort, it gives a clear...
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