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This paper analyzed the content and distribution of Arsenic (As) in bottom waters in the bay mouth of Jiaozhou Bay in May, September and October 1983. Results showed As contents ranged from 0.15-2.30 g L-1 in bottom waters in the whole year, and were more lower than Class I for As (20.00 g L-1) in National...

Information technology penetrates into education field continuously with development of information technology. Information technology is playing an increasingly important role in education. Information technology has changed traditional mode of education, and created a brand-new learning environment...

A parallel computation model is provided of dynamics and dissipative tunneling in a symmetric quartic double well potential. The numerical parallel solution for the position autocorrelation function obtained through the Wigner–Fokker–Planck equation is compared well with numerically exact results.

Focusing on the uncertainty of the environment, a grid map building method based on the multi ultrasonic sensors is provided. Firstly, the single ultrasonic sensor grid model is constructed by dividing the detected area into three regions. Then the evidences which are needed to fuse are self-adaptively...

Call center is one of the most important means for telecom operators to provide after-sales service for customers. Every day, call center can produce a large number of voice data. But these data do not bring significant value to the enterprise. Recent years, the development of intelligent voice technology...

Traditional matrix algorithm endures advantages of low requirements in FTU, high accuracy in Single–supply and radiation distribution network and so on. However, it will meet with erroneous judgment when it is used traditional matrix algorithm as long as it inserts with distributed generator. This article...

In this paper, based on complex network theory, a topology model was proposed which is more accord with the nature of wireless sensor network. Actually, each node's actual location is crucial, in addition, the node energy consumption and communication distances between nodes are inseparable, so we tried...

The IEEE 802.16m based broadband wireless access is a brand-new technology to provide high speed and wide range communications for wireless users. However, how to exploit the optimal utilization of the radio frequency bands resource in such networks is a big challenging issue as it covers the radio channel...

In order to improve the result of text dimension extraction, a text dimension reduction method which is based on CHI and TF-IDF is designed and realized. News websites on the Internet provide news articles, through the page analysis based on SVM and application method designed based on CHI and TF-IDF,...

Through the analysis on the cases of the transmission line gallop over the years, the meteorological condition and the geographical location have a dramatic effect on the gallop phenomenon. And the conductor gallop can be evaluated by the thresholds of the weather factors and the degree of the terrain...

Heating load forecasting of municipal steam heating system is an important part of the smart city. According to the forecast results, heating companies can arrange production reasonably and provide heating uniform and stable to improve energy efficiency. For the features of the time series of heating...

The engine idle speed control is one of the most important challenges in the engine control fields, essentially the engine idle speed control is a nonlinear, time-varying, complex and uncertain dynamics control problem, the present study the idle speed control problem for improve the gasoline engine...

The modeling method is commonly used in the simulation of engine at home and abroad, the engine which is used for auto control and performance analysis model. It includes static and dynamic modeling methods, such as engine nonlinear autoregressive model, the average model, the chart model and hybrid...

With the development of power electronic technology, harmonic load is one of the main reasons for damage to the power quality of the limited capacity power system. Firstly, the functional requirements of harmonic load model in the three-phase four-wire isolated power supply system are carried out according...

A gray level image segmentation algorithm is proposed based on Average Intensity Project (AIP) and shift Gaussian model for gray level images with connection between thread and area with similar gray level. The evaluation is performed on 30 gray level images, and the results show area overlap measure...

this article describes a method of general data interface’s design and implementation based on IEC 61850. This method puts interface data of communication and other function components in real-time database of the equipment, which also sets up a mapping method of the correlation of IEC 61850 and real-time...

In debugging and testing process of the intelligent substation process level intelligence unit ,it need to build multiple sets of test environments, with the wiring complexity and low efficiency. For this case, we design of a portable intelligent substation testing device based on PXI bus, describe the...

The paper takes side panel cracks of large-scale vibrating screen as research object. The side panel vibration signals have been de-noised and the wavelet packet energy feature has been extracted in Matlab with wavelet analysis theory. Meanwhile, the fault characteristics is sent to genetic neural network...

Since conventional methods cannot resolve the complex problem of airborne equipment development, the Hall for Workshop of Meta-Synthetic Engineering for the demonstration of airborne equipment development is built in this paper to improve the scientificity of the demonstration of airborne equipment development,...

When the system model and noise statistical characteristics are known, the conventional Kalman filtering algorithm is suitable. When the noise statistics are unknown and large initial misalignment angles results in system nonlinear, the application of liner error model and Kalman filtering algorithm...

To improve the development of informational support of equipment, constructed the logistic support informational system is one of the choice. In order to establish informational system which adapt to the requirement of equipment, how to confirm the business function of logistic support informational...

With the development of electromagnetic simulation technology, demand for electromagnetic radiation sensor is improving. The reasonable design of transmitter electromagnetic simulation technology has become a key. In this paper, the curved radiator of the electromagnetic radiation field by finite element...

Osteopontin (OPN) is a kind of phosphorylated acidic glycoprotein, human beings' osteoclasts, macrophages, T cells, and vascular smooth muscle cells can secrete OPN, the gene is located on chromosome 4q13. OPN has a function of adhesion to protein, which can be combined with CD44, integrin v 3 and v...

This template explains Haplotype assembly problem is one of the most important problems in molecular biology and life sciences. Computationally, the key work for this problem is to divide the aligned sequence fragments into two disjoint clusters and then to reconstruct the corresponding haplotypes from...

For capacitor shunt placement the proposed methods do not consider the following conditions; there are few measures and the first compensation points are easily over compensation in distribution networks. So this paper proposes a practical method that can full of utilize the available measures and avoid...

The sealing detection technology for no leak detection interface specimen was introduced, such as bubbles leak detection, back pressure leak detection, advance helium leak detection, fluorescence permeation leak detection and inside helium source leak detection, including their principles and specialties....

For the problem of space spectrum cannot reserve the original time-domain signal under specific direction after beamforming, a method of primitive signal estimation based on the results of beamforming is proposed. The method proposed is based on the traditional extrapolation, and can be used to estimate...

The measurement accuracy of the articulated coordinate measuring machine (AACMM) is different in different sub measurement regions. In order to improve accuracy, The method for dividing and merging of sub measurement region based on Density-Based Spatial Clustering of Applications with Noise (DBSCAN)...

Based on the variable forward-swept wing configuration, this paper utilizes a variable forward-swept wing mechanism with a double slideway, which makes it possible for the aircraft to switch among orthogonal wing, forward-swept wing and delta wing freely. The general configuration of the variable forward-swept...

Due to the special requirements of the clutch friction plate production, the previous manual operation has been unable to meet the actual production requirements. This paper designs a control system for friction plate forming equipment aiming at different types of automobile clutches, by using the PLC...

With the increase of the capacity of the generator, the electromagnetic force of the stator end winding of turbine-generator is increased, which can lead to the failure of the stator end winding. Based on this report, a finite element modeling method is proposed to solve the problem of complex structure...

With the continuous development and popularity of smart wearable devices, more and more people tend to use the devices to record their health indicators and exercise indicators. Thus a larger amount of indicators called self-health Data is generated all the time. Obviously, it is necessary to process...

Traditional phase detection methods of weak signals have some problems such as high complexity and low accuracy. To cope with these problems,, this paper proposes one novel parallel detection algorithm based on multi-coupled oscillators. Firstly, the chaotic detection model and double coupled oscillator...

The development of an inspection robot for in-service steel tubular poles is described in the article. Based on the design requirement analysis to the steel tubular poles used in China, the design requirement is presented. By compared with the deferent technology, TOFD technique and magnetic wheel are...

This paper measured the propagation law of the acoustic radiation of certain airfoil blade in the near wake and obtains the noise parameters with different tip-speed ratio and measuring position by using the PULSE system. The results show that in low frequency band the rotation fundamental frequency...

In this work, alloy coatings with different Al and Mg content have been prepared on overhead ground wires for Zn-Al-Mg series hot-dip coatings providing good protection on mild steel surface against corrosion. A reinforced thermal stability is confirmed by DSC thermodynamic curves. Furthermore, the enhanced...

For a new diesel engine cylinder head, an assembled finite element model, consisting of cylinder head and cylinder block, is constructed in the present work. By using computational fluid dynamics (CFD) analysis and fluid-solid coupling method, the flow distribution of the water jacket is achieved, as...

The paper analyzed the flow of the diameter of 72mm twin screw extruder screw-type’s field measurement from some machinery co., LTD by FLUENT software. Firstly, through established the flow channel of three-dimensional entity model by Gambit, defined the boundary and completed the meshing simultaneously....

With the great progress of hemoglobin-based blood substitutes, however, they all have a same problem that is hard to get effective stable structure of hemoglobin. The hemoglobin can be oxidized into met hemoglobin in the process of purification, lead to the loss of the function of carrying and transporting...

In EDM, especially in small holes EDM machining, there will be a lot of debris produced which is difficult to remove from narrow gap. If the debris can’t be removed in time, it will affect the machining accuracy and efficiency, and sometimes even unable to complete the processing. In this paper, the...

We propose a novel blind Doppler rate estimator for phase shift keying (PSK) transmissions. The issue may arise in mobile radio links when the received signal experiences non-negligible time-varying Doppler distortion, as in low earth-orbit satellite systems and terrestrial mobile cellular radio systems....

In this paper, a new design of a mechanical device based on inertial force is presented. The theoretical analysis and some kinetics equations are established. The dynamic characteristics of mechanical device are greatly influenced by the coefficient of friction during the moving process. Relatively low...

Water transportation are becoming more and more important in the transportation area. The ship lock is one of the most significant facilities in the inland water transportation. In this paper, different kinds of hoisting machines for the ship lock gate were introduced. Characteristics of the connecting...

This paper introduces a laser detection instrument for calibration the optical axis parallelism between laser transmitter with small field of periscope optical aiming mirror, and also it can measure laser transmitter power and view spot diameter of the main, minor zoom field and fixed foci small field...

Composite insulators have been widely used for transmission line, which have been noted for the aging problem with the increase of the installed number and service time. Characteristics analysis of aging composite insulators were analyzed using attenuated total reflect ion infrared spectroscopy (ATR-FTIR)...

In order to develop non-linear material used for the reinforced insulation in HVDC cable accessory, non-linear EPDM composites were fabricated by adding conductive nano fillers to improve the conductivity characteristic of EPDM. The conductivity and the DC breakdown strength of composites were tested...

Star sensor is an important part of the attitude control of a space vehicle. The advantages and disadvantages of the optical system determine the accuracy of the whole star sensor system. In order to adapt to the development of China's space needs, a star sensor optical system was designed by a domestic...

Structure parameters of Flexible arm in expanding brake of pipe robot are important, which are used to effect the expanding force. Pseudo-rigid-body model is often adopted for size optimization. The relationship between stress distortion and structure parameters are analyzed by virtual principle. The...

This template explains and demonstrates how to prepare your camera-ready paper for Trans Tech Publications. The best is to read these instructions and follow the outline of this text. Please make the page settings of your word processor to A4 format (21 x 29,7 cm or 8 x 11 inches); with the margins:...

For power system real-time data capacity is large, and the actual storage space is limited. This paper proposes a real-time data compression method based on wavelet transform. This method compress and decompress real-time data in power system through compactly supported orthonormal wavelet. The results...