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According to the special geometry configuration of miniature loop heat pipe with small scale flat plate evaporator, the correlativity of flow and heat transfer between each part of the LHP is analyzed and a mathematics model of LHP system is established. With the dynamic equilibrium equation of LHP solved by MATLAB/Simulink software, the connection between each node's pressure and temperature at the...
To extract feature parameters of Pseudo-code binary phase modulation combined with sine frequency modulation continuous wave(PRBC-SFMCW), the linear decomposition techniques using Quadrature Mirror Filter Bank Tree (QMFBT) is adopted. With this method, the intercepted signal is decomposed and analyzed by QMFBT. Then according to the feature of PRBC-SFMCW signal contained in different time-frequency...
A novel image reconstruction algorithm for Electrical Capacitance Tomography(ECT) is presented. According to the characteristic of the inverse problems of ECT the minimum norm solution is improved on the basis of analyzing the algorithm, and the stabilization of the numerical solution is proved via singular value decomposition principle. At the base of that, a new objective function is established,...
Fully polarimetric microwave radiometer is a new type of passive microwave sensor for measuring ocean wind vector. Digital correlation technology is used in it to get all the four Stokes parameters of ocean emission in this paper. Digital correlator is the main part of fully polarimetric radiometer. In the paper, design of a novel digital correlator is presented. Two high-speed, dual A/D converters...
American subprime mortgage crisis has evolved into the global financial crisis. In order to reduce impact of the U.S. financial crisis on the world economy, this paper uses systematic method to analyze the real contagion mechanism of financial crisis. The results show that competitive effect, income effect, effect of cheap imports and competitive devaluation effect are main influencing factors. Conclusion...
According to the block truncation coding (BTC), the texture primitive extracted from the image is used to describe the image texture feature. On the basis of which, an improved cooccurrence matrix and histogram are developed to extract the texture and shape features for the image retrieval. Experimental results have shown that the proposed method has sound and robust retrieval performance by integrating...
In order to improve performance of enterprises, the mathematical analysis method is used to design an incentive mechanism for managers. Results show that constraint degree, supervision strength, supervision motive, incentive strength, incentive direction, incentive frequencies are main influencing factors. Therefore, measures should be taken to enhance strength of these factors.
In order to exchange or share information on feature level among heterogeneous CAD systems. a feature-based data exchange method is proposed. All the data of the features of the feature model in source system are extracted, and decomposed or transformed, into an intermediate file. Then the feature model is recreated in target CAD system through the process of extracting, transforming and combining...
The main idea of this paper is using a manager server on the top of the tree-based P2P network construction for smartly providing alternative parent peers to reconnect in a case, when the downloading parent is down or crashes. The solution for these issues is considered to use minimum reconnection time for the parent change and solving the problem as lack in alternative peers. This is one of the main...
Authors in this paper mainly employ Ne (electron density), and Te (electron temperature) data of Langmuir Probe Instrument (ISL) onboard DEMETER, to study the variations of electron density and electron temperature associated with strong earthquakes. Tonga Mw 7.9 earthquake case study shows that revisited orbits of 09768_1 and 09782_1 (before and after shock, respectively) within 4 months data before...
A calculation method combining a simple energy balance model and CFD simulation is proposed in this paper to study the thermal effects on pollutant dispersion in real street canyons. The surface temperature calculated by the independent energy balance model can be used as thermal boundary by CFD simulation. Using the combination calculation method, the wind flow and pollutant transport inside an idealized...
Aluminum organic coprecipitates play important roles in the transport of oxyanions in soil environment. Al13-Oxalate precipitate representing common aluminum organomineral components in soil environment was prepared to investigate the adsorption behavior of phosphate and arsenate on noncrystalline aluminum precipitate. Important thermodynamic parameters (ΔG, ΔH and ΔS) of adsorption reactions were...
The quality of peanut kernels is referred to the every aspect of the profit of supply and marketing. A BP neural network model of quality grade testing and identification is built which is based on 52 appearance features such as the form, texture, and color and so on with technology of computer image processing. The testing aiming at 1400 grains is made separately in unsound kernel, mildewing, impurity,...
The performance of a pilot-scale vermifiltration treatment process for municipal wastewater was investigated at hydraulic loadings of 2.4, 4.8, 5.6, 6.7m3/m2.d. The results indicated that the removal efficiencies of CODcr, BOD5, SS and NH4-N were in the range of 47.26%~57.55%, 54.78%~59.29%, 62.06%~77.90%, and 21.01%~52.58%, respectively. The average sludge reductions were from 38.2% to 44.7%. The...
Underwater acoustic sensor networks (UASN) based on the advances in underwater data collection and observing systems may play an important role in oceanographic research. UASN typically comprises of sensor nodes that are deployed in sufficiently large numbers for data collection, monitoring and surveillance, where sensor nodes are also energy limited without easy way to replenish power unfortunately...
The axial magnetic flux leakage(MFL) inspection tools cannot reliably detect or size axially aligned cracks, such as SCC, longitudinal corrosion, long seam defects, and axially oriented mechanical damage. To focus on this problem, the circumferential MFL inspection tool is introduced. The finite element (FE) model is established by adopting ANSYS software to simulate magnetostatics. The results show...
With respect to the problem of improving the consistency of linguistic judgment matrix, a new method for improving the consistency of linguistic judgment matrix is proposed in this paper. Firstly, the linguistic judgment matrix is transformed into reciprocal matrix. Secondly, a method for improving the consistency of reciprocal matrix is constructed according to the exiting results. Secondly, the...
With respect to the aggregation problem of group decision-making based on ordinal preference information set, a processing method is proposed. The preference information is transformed into the educed matrix (fuzzy reciprocal judgment matrix) through quantifying ordinal preference information, it comes to conclusion that educed matrix is fuzzy reciprocal judgment matrix and the educed matrix meets...
Making self-estimation in network teaching is not only an important stage for students, but also an important method for checking the learning quality. This article states the aim and content of self-estimation in network teaching,and it takes a network curriculum in Virtual Learning Community of Capital Normal University as an example to discuss its effect on learning quality, taking four aspects...
In this article, the author through the digital city management system 12319, illustrates the "information islands" has become affecting construction and development of e-government and e-commerce information, the authors in this paper, in accordance with the need of information resources automatic integration in the cooperative petition processing system, analyze the architecture and the...
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