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The more-electric aircraft concept (MEA) is one of the major trends in modern aircraft electric power system (EPS) engineering that results in a significantly increased number of onboard loads driven by power-electronics. Development of appropriate EPS architectures requires intensive simulations to ensure the system integrity, requested quality and performance under possible normal and abnormal scenarios...
The application of network computing technology, more and more widely, its security is particularly important to the emergence of trusted computing research for the security of network computing application technology research has provided new opportunities. In this paper, the credibility of Web-based computing environment, the structure of thought and its implementation model.
User requirements obtained through text data mining are very important to improve the competitiveness of enterprises. In this paper an algorithm of acquiring user requirements in machinery products by using text association rule is proposed. In the algorithm, the user requirement documents are represented by vector space model. The feature words matrix is obtained by transposing the documents matrix...
Inspired by the change of antibody concentration, network security system can reduce the false alarm rate effectively. In this paper, we discuss the nonlinear dynamics of antibody number in the antibody concentration inspired network security method. According to the conclusion of this paper, we can get the general calculation approach to compute the accumulation of antibody number in the antibody...
Evacuation simulation can greatly ease the cost of money and material in fire case by using computer. Integrating ABM and GIS technology can not only recurrent the evacuation process, but also analyse optimal evacuation route, optimize the supermarket layout by GIS spatial analysis functions. A model is used to determine the action rules of evacuation staff, simulate the evacuation process on Agent...
Create a Hamming-Weight model, combine it with traditional algebraic attack, and achieve the Correlation algebraic attack on the first round of AES128 according to correlation coefficient r. The attack experiment proves that owing to this proposed model, it can evidently distinguish the right key bytes from the wrong ones by this function with further computed correlation coefficient r, and in certain...
The thesis proposes a hybrid intrusion detection model based on the parallel genetic algorithm and the rough set theory. Due to the difficult for the status of intrusion detection rules. This model, taking the advantage of rough set's streamline the edge to data and genetic algorithm's high parallelism, succeeds in introducing the genetic-rough set theory to the instrusion detection. The application...
In this paper, we solve the searching problem by high level features used by sign language recognition. Firstly, we find the face in video frames that has complex background, and then we find the left sign and right sign in specific areas. By computing the signs' length, position, velocity, acceleration, Fourier figure descriptor and etc, we generate the signs' dynamic features. Consequently, we segment...
For improving the reliability of the data stored up, this paper brings forward an improvement scheme. It expands the error correction from One-dimensional (1-D) model to Three-dimensional (3-D) model. This thesis has listed and has analyzed three models' (1-D, Two-dimensional (2-D) and 3-D) structure method and their error correction process, and from all-round aspects to compare the three kinds of...
Efficient data mining and indexing is important for multimedia analysis and retrieval. In the field of large-scale video analysis, effective genre categorization plays an important role and serves one of the fundamental steps for data mining. Existing works utilize domain-knowledge dependent feature extraction, which is limited from genre diversification as well as data volume scalability. In this...
An object pool model based on RMS is proposed. Aimed to solve the Memory peak problem in J2ME, on the basis of object pool design pattern, an object pool model used RMS is designed and implemented. According to the test result, the performance of program can be increased and the memory overhead can be reduced by using the model.
This paper faces the general problem of modeling pinna-related transfer functions (PRTFs) for 3-D sound rendering. Following a structural approach, we aim at constructing a model for PRTF synthesis which allows to control separately the evolution of ear resonances and spectral notches through the design of two distinct filter blocks. Taking such model as endpoint, we propose a method based on the...
In this decade, peer-to-peer (P2P) applications have emerged as popular tools for sharing data and they have gained much attention. Such P2P applications build overlay networks on top of existing infrastructure networks and disseminate data in a peer-to-peer manner. How well the P2P overlay network maps onto the underlying physical network topology can significantly impact P2P application performances...
Mobile devices are carried by people, which are characterized by their need to socialize. The social character of mobile networks may have an influence in modeling the mobility of their nodes, and consequently in the performance evaluation of the network. In this paper, we introduce social behaviors into existing mobility models so as to mimic real motion of users and evaluate their impact on network...
Nonlinear effects of a power amplifier (PA) in communications systems include spectral spreading, which causes adjacent channel interference. For predistorter design, it is crucial to employ a model that can sufficiently model the intermodulation distortion (IMD) caused by the PA. The order of IMD generated by a polynomial is determined by its highest order basis. For a piecewise linear function,...
Delay Tolerant networks (DTNs) are one type of wireless networks where the number of nodes per unit area is small and hence the connectivity between the nodes is intermittent. In this case, the performance in terms of transport of information from source to destination relies on the mobility of the nodes which would cause their encounters and hence the relay of information from one node to another...
This paper studies the effects of heterogeneity in DO networks and proposes measures for reducing or removing them. In particular, two types of imbalance, i.e., f-Imbalance and OH-Imbalance are identified and methods for compensating them, i.e., RL padding and AT overhead (OH) channel boost, are proposed. The effectiveness of the proposed methods is demonstrated through both, developing an analytic...
In a heterogeneous cellular networks environment, users behaviour and network deployment configuration parameters have an impact on the overall Quality of Service. This paper proposes a new and simple model that, on the one hand, explores the users behaviour impact on the network by having mobility, multi-service usage and traffic generation profiles as inputs, and on the other, enables the network...
The goal of this paper is to introduce a statistical approach for modelling antennas behaviour in the vicinity of the human body. A very preliminary model based on geometrical optics has been developed, and calculations have been performed for parallel and perpendicular polarisations, for 0.915, 2.45 and 5.8 GHz, for various human body tissues, and for several antenna locations on the body. The statistics...
This paper compares the indoor tracking performance for a moving target between an IIR (Infinite Impulse Response) low pass filter and a particle filter. It reveals that, in the computer simulations where the motion of a target exactly follows the state transition model in the particle filter, the particle filter-based tracking system outperforms the IIR low pass filter-based tracking system. On the...
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