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In this paper, a modified k-nearest neighbor (k-NN) method integrating the cluster analysis and principal component analysis is applied to bus arrival time (BAT) prediction using historical bus GPS data. The methodology of the k-NN method based on processed GPS data is presented. To validate the introduced k-NN approach, empirical analysis based on data collected from the bus No. 16 of Beijing public...
Electrothermal characterization of single-walled carbon nanotube (SWCNT) field effect transistors (CNTFETs) is performed in this paper. By solving one-dimensional heat conduction equation in the channel self-consistently, self-heating effects on the I-V characteristics, signal delay and cutoff frequency of the CNTFET are studied. Simulated results indicate that the performance degradation of the CNTFET,...
Global asymptotic stability problem for a class of recurrent neural networks with both high-order term and discrete delays has been studied based on delay-matrix decomposition method and linear matrix inequality technique. The proposed stability criterion extends the existing stability for the multiple delayed recurrent neural networks with higher order terms. Compared with the existing results, our...
This paper studies the local and global exponential synchronization of a complex dynamical network with switching topology and time-varying coupling delays. By using stability theory of switched systems and the network topology, the synchronization of such a network under some special switching signals is investigated. Firstly, under the assumption that all subnetworks are self-synchronizing, a delay-dependent...
Current computing systems often employ sophisticated adaptation mechanisms that enable them to deal with overload conditions. Reduction of Quality (RoQ) attack, a novel category of attack being proposed recently, which exploits the adaptive behavior exhibited by various adaptation mechanisms, can cause different forms of damages to the victim system. For the widely used of adaptation mechanisms, RoQ...
This paper mainly realize in-flight localization and alignment for carrier-based aircraft in a three-dimensional fleet network. A 3D node localization scheme is presented based on weighed-multidimensional scaling, which adopt spherical locating in the initial stage, and adaptively choose source nodes with high relative reliability to achieve position update. Then a robust filter algorithm is applied...
Due to the imprecision and immeasurability of the user's feeling, the search for proper expression of a user's satisfaction function (USF) in multi-media network is challenging. In this article, we propose fuzzy logic as an effective means of meeting these challenges. First, we introduce a new Fuzzy Satisfaction Factor (FSF) from a collective set of fuzzified Quality of Service (QoS) parameters that...
Built on the basis of the classified subscribe station (SS) priorities, a policy-based call admission control scheme is proposed to maximize the system bandwidth throughput and decrease the network delay at the base station(BS) in IEEE 802.16d system. In the simulation, we use throughput comparison and the delay increasing trend as the evaluating criterions. The simulation results show that our proposed...
We make some modifications in this paper to the DAP-NAD-CJ (deterministic adaptable priority net access delay with cycle jump) algorithm for multicast applications. The new algorithm assigns wireless channel access slot unevenly between stations in the network so that the multicast source can access channel as fast as possible. We then proved by calculations and simulations that the modified algorithm...
In most cooperative communications works, perfect synchronization among relay nodes is assumed in order to achieve cooperative diversity. However, this assumption is not realistic due to the distributed nature of each relay node. In this paper, we propose a new distributed space-time coded transmission (DSTCT) scheme for asynchronous cooperative communications under frequency-selective channels. First,...
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