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The channel factors during signal propagation from the satellite to moving user terminal (UT) is comprehensively analyzed. Then an algorithm is presented to model dual-polarized MIMO LMS channel, which investigates almost all channel factors including temporal and polarization correlation, line-of-sight (LOS) shadowing, multipath effect, cross-polar discrimination (XPD) of antennas, cross-polar coupling...
Icing on transmission line is a major risk factor for the safety of the power system. Therefore, it is necessary to research on online monitoring system and prediction model of icing. At present, there are many kinds of the icing prediction models are based on micro meteorological conditions, but the errors of the prediction are caused by the time-varying characteristics of the meteorological conditions...
In this paper, the thought of space division full duplex (SDFD) is introduced to improve the flexibility of traffic adaptation in time division duplex (TDD) systems. In SDFD scheme, two spatial separated transmission points (TPs), which can be two base stations (BSs), serve downlink (DL) and uplink (UL), respectively. In this case, the interference between two TPs cannot be avoided, which might affect...
At present, the design knowledge can't be reused effectively and this leads to the long design cycle and repetitive works in product design. To solve this problem, this paper researched on a design knowledge reuse method based on knowledge component. By analyzing the representation demand of design knowledge, we studied the knowledge expression and reuse method which contains the ontology and knowledge...
The traffic congestion in modern cities deteriorates urban bus' fuel economy and pollutes the atmosphere seriously, Hydraulic hybrid system becomes one of the efficient ways to improve motor's fuel economy and reduce its pollution under the frequent starts and stops. In order to improve the power performance, a front located parallel hydraulic hybrid (FPHH) configuration is proposed. Through dynamic...
We use the novel modified differential evolution (NMDE) algorithm algorithm to determine the model parameters of photovoltaic modules in this paper. NMDE is a new proposed DE variation, and each solution has its own scale factor and crossover rate. In detail, for each solution vector, its own scale factor and crossover rate are adaptively adjusted in terms of the corresponding values of all successful...
In Complex Adaptive Systems, agents co-adapt to each other through interaction. A typical example is game: players learn and adapt to the opponent through game playing. This paper studies the adaptive characteristic of co-adaptation through a combinatorial game “Five-in-a-row” focusing on the evaluation function and game tree. The computer simulations show that a high-level player (with a good evaluation...
Terminal Sensitive Projectile is a sensitive type of Picture ammunition, which use the advanced sensor technology and EFP technology together. The text is introducing the Monte Carlo Method to analyses and simulation the characteristic of Terminal Sensitive Projectile's damage rate, using of picture and simulation picture of the result to explain the influence factor of Terminal Sensitive Projectile's...
In this paper, we propose the application of low-rank matrix completion techniques for array signal processing. Specifically, under the assumption that the number of targets is generally much smaller than the number of antennas, the received signals can form a low-rank matrix with noise. According to the recently proposed matrix completion theory, only a subset of the entries are enough to recover...
This paper proposes a PCA and ANN based approach to identify significant influential quality factors and modeling customer satisfaction for complex service processes. Firstly, the performance evaluation index system includes initial factors and customer satisfaction degree is proposed, and then the measurement data are collected by questionnaires. Secondly, by using PCA, several preceding principal...
Traditional DEA model such as CCR and BCC cannot be applied to rank the efficient DMUs. In this paper, we present a new DEA-based model, in which the upper bound value of efficiency can be relaxed, to evaluate and rank the educational efficiency and performance of vocational schools in 30 provinces in mainland China. This new technique, super-efficiency data envelope analysis, abbreviated to SE-DEA,...
In recent years, the total variational model proposed by Rudin, Osher and Fatemi (ROF) has been often used in image restoration. As the numerical iterations increase, ROF model may produce the staircase effect while deblurring the noise effectively. Another fourth-order PDE model proposed by Lysaker, Lundervold and Tai (LLT) can protect more the fine image textures, but its deblurring result and boundary...
An analytical model is introduced for the study of the interplay between medium access control (MAC) and packet forwarding disciplines used in multi-hop wireless networks. The model incorporates the likelihood with which nodes access the channel, which is determined by the MAC protocol, and the creation of active portions of the topology, which is given by the packet forwarding discipline. The model...
Coal resource plays an irreplaceable role in economy development, which decides the importance of coal mine investment. The influencing factors of coal mine investment are complicated and diversified, so the valuation should be flexible. In this paper, firstly, the concept and classification of real option are introduced. Then, combining to the compound binomial tree for stages, the principle and...
Government supervision is one of the significant factors which influence the supervision of coal mine production safety, and the level of coal mine production safety is related directly to the performance of government supervision. In this paper, Dempster-Shafer theory is used to analyze the influencing factors of government supervision performance. Then, the index system and the evaluation model...
Due to the characteristic of rare earth extraction separation, combined with the material balance model, an approach based on multiple model is presented in this paper. Firstly, by using the data selected in an industrial process, the steady points are obtained, which use the improved subtractive clustering algorithm. The recursive least-square identification method is then adopted to identify the...
We describe an active contour based local energy minimization point distribution, behavior of orientation, relaxation iterative algorithm that estimates feature points of static target in image sequence. In our approach, we build a contour model of a target to get some of low-energy points kernels. The use of snake based line model results in more reliable convergence of the point local energy minimization...
The YZ4105 diesel engine cylinder liner was analyzed by using of finite element analysis software ANSYS. Taking into account the basis contacts of various components, this paper calculated the stress and displacement distribution of cylinder liner under the function of heat - coupled structure, and provided a reference for improving a design.
According to the basic theory of grey system correlation space, a type of new grey incidence degree model is constructed by starting from the perspective of n dimensional linear space. This paper makes a research about some properties of the incidence degree and compares this incidence degree with Deng's. Results indicate that this incidence degree has the same properties with Deng's; and it also...
This paper presents an automatic method to perform the kinematic analysis of the conceptual design schemes. Using the basic organ based kinematic analysis method, the system directly establishes the kinematic analysis model of the symbolic scheme which is generated by the design rules based computerized regeneration method. The 3D virtual assembly and simulation of the mechanism are also performed...
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