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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...
Most of power consumption in CMOS chip comes from dynamic power, which is direct proportional to the parameters of gate switching activity rate (R??) and number of gates (N). The gate switching power consumption accounts for above 80% (aiming at adder and multiplier) of total circuit's power consumption. By redefining this theory (RT = count / N), and using the gate or register as analyzed "particle",...
This article studies numerically a familiar important phenomenon in spray combustion which is deformation and breakup of liquid drops in gas flow. The SIMPLER method is used to solve the two-dimensional (2D) unsteady axisymmetric Navier-Stokes equations for both the drop and the ambient gas flow. The level set method is applied to capturing the liquid/gas interface. Through calculation are obtained...
A novel porous micro heat sink system is presented for dissipating high heat flux of electronic devices. Numerical model for the micro heat sink is proposed to describe heat transfer in the metallic wall and liquid flow and heat transfer in the porous wick structure, and it is solved with SIMPLE algorithm as a conjugate problem. The numerical results showed that the heated surface temperature of porous...
A porous micro heat sink system is presented for cooling of high power LEDs, which has high heat transport capability. The operational principle and heat transfer characteristics of porous micro heat sink are analyzed. Numerical model for the micro heat sink is proposed to describe liquid flow and heat transfer based on the local thermal equilibrium of porous media, and it is solved with SIMPLE algorithm...
Preference restraint cone data envelopment analysis model is recommended and extended to interval number case. A mew model for project selecting has been established based on preference restraint cone data envelopment analysis model and interval data envelopment analysis. The approach is illustrated by an example. It is shown that the introduced model is convenient for integrates decision-maker's...
The products of higher education provided to the customers by colleges and universities are service. Service attribute is the basic characteristic of higher education. Whether customer is satisfied is very important to the future of college. The model of service customer satisfaction in higher education is established to explore the relationship of service quality, image of colleges and universities,...
Segregation in the Hot-Mixed Asphalt (HMA) causes inferior homogeneity of pavement structure which is a key contributor to the early pavement damage. This paper, by statistic principles, analyzes the contributive factors to the segregation, indicates the major factors and guides the controls in actual project, thus to reduce the unevenness of the pavement and improve the quality and durability of...
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