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Because there is not a perfect feature descriptor which can suit to describe any image, this paper proposes combining different feature descriptor to do the content-based image retrieval and using the LIRe to implement a image retrieval system. The experiment shows that using multi-feature descriptor at the same time can keep the retrieval system having a stable accuracy.
In order to improve the utilization of the map data unit and the network bandwidth when displaying on the terminal system, an improved strategy is putted forward based on the existing map data pre-fetch strategy. This strategy considers the road network information and the current direction angle when the system pre-fetches map data. Tests show that the improved strategy can not only meet the real-time...
On the bases of the comprehensive analysis, this paper puts forward a system design plan about the topology and control strategy of the charging system in vehicle. The system design plan has high performance and carries on the simulation of common control strategy by MATLAB, what's more, it also makes the comparative analysis of the control effect.
On the basis of analyzing the system demand, a remote control system is designed with a single-chip and the core network microcontroller. The system realizes communication between each single-chip module and the IPv4 network using TD-SCDMA protocol. The single-chip controls multiple appliances simultaneously by infrared communication mode. The method to construct the remote control system is proposed...
Research on ¡§How to create a fair, convenient attendance management system¡¨, is being pursued by academics and government departments fervently. This study is based on the biometric recognition technology. The hand geometry machine captures the personal hand geometry data as the biometric code and applies this data in the attendance management system as the attendance record. The attendance records...
Wuhan City, as the capital of Hubei Province, has a great production of urban waste, which is still increasing slightly. The paper analyzed the management mode, collection and treatment, local policy/law of the city's urban wastes. Then the application of reuse, reduce and recycle (3R) in UWM in Wuhan city was studied and the prospective was analyzed in four aspects, including initiative from citizens,...
An underwater terrain navigation method based on Bayesian estimation is proposed for autonomous underwater vehicle (AUV), according to the depths measured by multi-beam echo sounder (MBES). For the shortage of false peak increasing intensely at low characteristic area of this method, the Fisher criterion is introduced. This method effectively reduces the false peaks, enhances the discrimination of...
Workshop scheduling change when orders of machinery enterprises change; on the contrary, when scrapped parts, equipment failure and understaffing occurs in workshop work process, feedback to production planning and management department in time is necessary such that the department can remedy the plan according to condition like inventory and assign it to the workshop. This article proposes a workshop...
Supply chain is a network composed by business entities with different function. This paper analysis the network statistic characteristics of model such as degree distribution, supply chain average shortest path and betweenness. The finally result shows that both in-degree and out-degree of the directed supply chain complex network node obey the power-law distribution and the directed supply chain...
According to 2K-V-type cycloid-pin reducer's structure and work principle, the optimization design of 2K-V-type cycloid-pin reducer is set up, which puts the minimum quality as the objective function. The complex method is put forwards into application in this paper. The calculation of example is carried out. By comparing, the quality of 2K-V-type cycloid-pin reducer is reduced by 14.17%. According...
To solve problems such as low thermal efficiency, high concentration of NOx emissions and slag bonding of a 150t/h pulverized coal boiler, A new idea of using enrichedoxygen air as the over flame air (OFA) and welted edge air was proposed. With the help of computer numerical simulation technology and using k-e-g turbulence combustion model for computations of the gas phase and two competing reactions...
In the age of Internet, people are using the social network services (SNS) to share information more frequently. Rumor spreading as a basic mechanism for information in online social network (OSN) has a significant impact on people's life. In this paper, A spreading model of rumor and derive differential equations that describe the dynamics of the model on online social network are introduced. Comparing...
This paper analyzes the problems existing in design and manufacture of the reciprocating screw in the spooling gear and proposes the solutions accordingly. By adopting software such as Solidworks and Unigraphics for three-dimensional design, a solid model meeting the design requirement can be obtained, providing good reference value for design and manufacture of the screw.
Woven textile sandwich composite (WTSC) is a light-weight structural material. The manufacturing method of WTSC was introduced in the paper. To reveal the quasi-static and the dynamic crushing behavior of WTSC, out-of-plane compression tests were carried out. Low-velocity impact experiments were carried out to investigate the anti-crush ability of WTSC. The results of the quasi-static and dynamic...
The correct combat situation assessment is the first premise in air combat decision. In this paper, the writer adopts non-parameter and parameter method to review air combat situation assessment technology. The air combat situation assessment of non-parameter method is mainly discussed in the following several aspects: superiority functions, analytic hierarchy process (AHP), fuzzy evaluate and neural...
In this paper, a new method is proposed for neurons classifying based on its spatial structure. The part of neuron is geometrically similar to the whole. Neurons can be regarded as fractal. Different types of neurons fill with different levels in space. So, their fractal dimensions are also different. First, fractal dimensions are calculated for neurons. Then the other 16 spatial structure indicators...
Montmorillonite pillared with Fe-Ni-Al was synthesized by ion exchange method and used as heterogeneous catalysts for catalytic wet peroxide oxidation (CWPO) degradation of azo dye Acid Orange II (OII). The catalyst was characterized by BET, XRD and FT-IR. The effects of the initial pH, the concentration of H2O2 and the reaction temperature on the rate of decolorization were investigated in detail...
In the display's calibration and characterization, Gamma value, color temperature and brightness parameters of the display colors have tremendous influence. The results of experiments: With the Gamma value increases, the color tristimulus values and luminance L values are increasing, and the rate of increase varies, adjust the display image of the bright part of the level will show better, the contrary...
In order to obtain multiple different simulation results, parameters need to be modified constantly during the simulation experiments. The simulation interactive technology based on interactive database (IDB) file is very difficult to operate for users, inducing its low¨Clevel simulation running efficiency. This paper introduced a simulation interactive technology based on parameter file with variable...
The progress of numerical simulation for high entrained gas-liquid two phase flow were summarized and analyzed. The results show that the Euler-Euler method is the most suitable for the air-water two-phase flow. The advantages and disadvantages of three multiphase flow models (VOF, Mixture and Eulerian model) are analyzed and the results show that the Eulerian model is most popular and accurate for...
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