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Due to the influence of environment and multipath effect, the calibration data of spherical near-field antenna measurement are not accurate, which will result in amplitude and phase errors in the near-field to far-field transformation. In order to obtain more accurate antenna radiation pattern, the influence of amplitude and phase errors on the near-field to far-field transformation results are simulated...
High performing teams may benefit the execution efficiency of business processes. In executing a process, the performance of the team is concerned with the individual expertise of team members and the handover relations between executors of adjacent tasks of the process. Team formation problem in the presence of business process can be defined as finding a group of individuals to execute all tasks...
The accurate multi-polarization 3–10 GHz frequency-domain data of some small trees are obtained by indoor wideband polarimetric scattering measurement system. The relationship between differential extinction coefficient and returned power is quantitatively derived, and the fluctuating of differential extinction coefficient changed with frequency is analyzed by combining the morphological characteristics...
This paper establishes an evaluation indicator system of clothing brand competitiveness from four aspects: brand loyalty degree, brand innovation ability, brand market ability and brand basic ability. Among those, brand loyalty degree reflects customer value of brands, while brand innovation ability, brand market ability and brand basic ability reflects enterprise value of brands. We select B-P neural...
We show that incoherently coupled multicomponent beam evolution equations in the low-amplitude regime in biased photorefractive-photovoltaic crystals can exhibit the analytical solutions of multicomponent solitons, which are due to both the spatially nonuniform screening of the external electric field and the photovoltaic effect. These multicomponent solitons can be obtained for N self-trapped mutually...
In this paper, we consider an adaptive subspace detector for partially homogeneous environments. In this environment, the clutter covariance matrix (CCM) of secondary data is equal to the CCM of the cell under test (CUT), except for a real constant factor. We also suppose that we have some prior knowledge of the CCM, and the prior knowledge is controlled by the parameters of the statistical distribution...
In the aspect of the particle oscillator model, through simulating numerically the low amplitude delocalized, shock, and localized surface waves at the interface, we find that for the different values of guiding parameters and propagation constants, different types of surface waves at the interface between the photorefractive crystal and the linear dielectric medium are formed. When the guiding parameter...
Based on the five convergence models for shallow tunneling, the settlement formulas of deep soil for oval convergent model and simplified top model were deduced. The results of five kinds of convergence models were compared by two examples. The results show that: The impact of soil friction angle on the settlement could not take into consideration in the oval convergent model and simplified top model...
The development of E-commerce brings new topics to enterprise competitive intelligence research. It is important to study the E-commerce influences to competitive intelligence in E-commerce environment for better supporting the planning and implementing of enterprise competitive strategy. The article puts forward an E-commerce influence model to competitive intelligence work and a revised model by...
During the course of intercepting the fast target in proportion navigation law, the missilepsilas acceleration increases so quickly and even reaches its saturated value near the hitting spot that the guidance precision becomes worse. To analyse the effect of the saturated acceleration on the guidance precision in proportion law, an algorithm to calculate the missilepsilas miss distance within the...
A target tracking method based on data fusion of infrared and radar is proposed to improve tracking precision. Unscented Kalman filter (UKF) is applied to process data on distributed fusion architectures. The method combines the advantages of UKF and track-to-track algorithms. The cross-covariances of the two sensors are used to estimate overall covariance and states. The overall estimation is obtained...
A maneuvering target tracking algorithm is proposed to overcome the defects of poor filtering precision while using unscented Kalman filter (UKF). The method combines the merits of UKF and adaptive neuro-fuzzy inference system (ANFIS). ANFIS is used to adjust system noise covariance matrix in target tracking system. Fuzzy inference, neural networks and UKF are integrated effectively. The proposed...
This paper presents a new rule induction algorithm based on the extension matrix theory, and uses it to learn prosodic phrasing rules automatically for Chinese text-to-speech. Firstly, the basic idea of our algorithm is introduced. Secondly, we collected 937 sentences from news programs and built a corpus for modeling Chinese prosody, a group of feature variables are also proposed. Lastly, the data...
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