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Analytical models of vibration exciters and shakers are of great importance to their dynamic analysis and control. Furthermore, the modeling of the drive torque/force of the driving principle plays a key role in the modeling of an entire driving system. This paper aims to find a more detailed analytical model of the electromagnetic drive torque on the permanent magnet with a new shape in a novel driving mechanism. The proposed model contains all the related parameters instead of treating them as only one variable. Two methods of the permanent magnet installation are firstly introduced and compared. Based on the magnetic charge model, torque models of the bipolar cylindrical permanent magnet and partial bipolar cylindrical permanent magnet are then obtained. Thereupon then the final model with a composite shape is gained by combining the cylindrical and partial cylindrical ones. Moreover, all analytical models are verified by finite element method and it is found the final detailed model can characterize the electromagnetic drive torque in a high accuracy.

The valve cover of a gray cast iron drain valve, used by a chemical company, cracked during its operation. The cracking reasons of the valve cover were investigated by fracture appearance observation of the valve cover, metallographic observation, SEM observation, chemical composition analysis of the corrosion products, finite element analysis of the valve cover by ABAQUS and tensile tests and impact tests of the cover sample at normal temperature and-12°C. After these investigation jobs, it can be concluded that there was no any significant cast defect or original defect in the fracture of the valve cover, the stress was much lower than the strength of valve cover material, and the cracking of the valve cover was caused by the expansion of the ice which was changed from the seeper between the valve cover and valve body when the weather temperature was lower than-12°C. At the end of this article, some proposals were put forward to the company in order to avoid similar accidents.

In the paper, the steady-state steering dynamics model of the cars is firstly established. Then, three degree of freedom model of double row angle contact ball bearing is established. Based on the mathematical model and load spectrum, wheel hub bearing unit service life is calculated and estimated. The analysis results of the service life influencing factors have an important guiding significance for the design and use of hub bearing unit.

With the gradual expansion of China's electrical network construction, network scale and transmission capacity, a reasonable electrical network construction scale research is urgent for the optimized power system development. In this paper, a blackout risk assessment index system as well as the risk calculation model under different electrical network scales is established, followed by a series of blackout risk value calculation of constitutive units in an IEEE-14 node standard system under typical patterns, hence the validity of the model is verified via comparison with the actual blackout risk value of the system. The result indicates that that the ranking of blackout risk values under different connection patterns with the same amount of lines is polygon, quadrilateral and triangle.

The disadvantage of Beijing-Tianjin-Tangshan power grid operation control mode is that the control effect is poorer and the spare capacity demand is big, this paper puts forward a new coordinated control strategy. First of all, this paper describes the relationship between the load, frequency, the output of generating unit, the tie line power and the area control error relationship of the whole power grid, according to the regional automatic generation control performance assessment criteria, concludes the characteristics of regional unit adjustment. This paper analyzes the contradiction between them, and then proposes a coordinated control strategy between the Beijing-Tangshan power grid and Tianjin power grid. The case simulation results prove the superiority and feasibility of the new coordinated control strategy. Compared with the original, the new strategy reduces the volatility of the unit, shortens the recovery time of frequency, and has a certain practical significance.

Digital Volumetric Speckle Photography (DVSP), which is the extension of 2D digital speckle photography, is applied to measure the interior deformation and strain of the object by 2-step 3D FFT. For using FFT, DVSP has some advantages in computational efficiency. With the special loading setup for Micro-CT, the coal specimen under different uniaxial loadings is scanned, and the volumetric images are acquired. By using DVSP, the interior 3D displacements of the specimen are obtained, and then the equivalent strains and volumetric strains are estimated. Based on the interior displacement and strain mappings, the process of deformation or strain localization in the coal specimen is studied.

Waste organic solvents have been classified as hazardous waste in many countries because of their toxicity, high volatility and Ignitability. Waste organic solvents are produced in a lot of industries including of the electronics industry. In this industry, organic solvents are used as cleaning agent and developer, which would generate a lot of waste organic solvents. In China, in the management and re-use of waste organic solvents, the current management systems are not completely. So it is need to learn the laws and regulations, treatment and disposal technologies, control standards of waste organic solvents generated in electronics industry in the developed countries. In this paper, based on an organic solvent waste for feature analysis and risk assessment, which generated by the electronics industry, Therefore, the waste organic solvent has a more serious environmental risk and human health risk through the soil and underwater than the air. Forbid the waste organic solvents produced company casual dump, in order to avoid the waste pollution. The evaluation result of the waste organic solvents produced by China's electronics industry is the data basis to obtain relevant management regulations On this basis, put forward the suggestion and management specifications of waste organic solvents, provide strong supports for the revise of the " National Catalogue of Hazardous Wastes ".

The objective of this paper is to evaluate the impact of the parasitic capacitor to the Gallium-Nitride (GaN) based high-electron-mobility transistor (HEMT). Because of the high switching frequency operation, the parasitic inductor has caught a lot of attention when the GaN HEMT is applied in the high power applications. However, the impact of parasitic capacitor to the GaN HEMT is not discussed in literatures. A prototype circuit is built and tested to evaluate the impacts of parasitic capacitor to the GaN HEMT performance. The results show that the parasitic capacitor can induce voltage spike and damage the GaN HEMT.

A design of overpressure protection system is presented for the mobile field medical shelters. The system compositions, structures and installations were comprehensively designed and manufactured by the modular analysis method according to the characteristics of defensive logistic operations for chemical, biological, radiological and nuclear air contaminations to the mobile field hospital. The effects of overpressure protection system were verified through a series of experiments on different shelters, which showed that more than 300 pascals overpressure could be achieved in the separate expanded shelters, and more than 100 pascals overpressure could be achieved in the interconnected expanded shelters. The experiments indicate that the overpressure protection system can meet the demands of relevant protection standards, and can provide effective protection for the medical shelters under suddenly CBRN contamination attacks.

In this paper, the three-dimensional motion of two bubbles in melt Aluminum was simulated by using level set method. Through changing the positions and sizes of two bubbles, the influence of bubbles wake flow and their interaction are considered. Our numerical simulations demonstrate the bubbles characteristic behavior such as distortion, attraction, and repulsion. The velocity field around the bubbles reveals the interaction between the wakes of two bubbles in fluid dynamics. For the two bubbles placed horizontally or vertically, it is found that the coalescence of bubbles may happen when 50% of the below bubble’s projected area enters the wake zone of the upper bubble.

Fatigue failure analysis on key components of bladder accumulators was conducted. Failure fracture of the key components, which included the shell, the support ring and the oil inlet valve body in the accumulators, was investigated by optical microscope (OM) scanning electron microscope (SEM). According to the metallographic analysis and micro-hardness determination at the crack profile, crack initiation and propagation direction was confirmed. By simulation using the finite element method, it was detected that the peak stress of the key components applied on the contact surfaces. Obvious plastic deformation was observed at the region with high stress. However, the fatigue crack did not initiate at the contact surface, but occurred on the second high stress area without contact.

Based on the difficulty to accurately control temperature for torch brazing, the study is concerned with developing low-melting-point solders for brazing pure aluminum. For this purpose, Ge and Zn have been chosen to be added to Al-Si-based alloy. The melting characteristic, wetting property of solders with Al and mechanical property of the brazed joints were investigated. The results show that the addition of 10 wt. % germanium into the traditional Al-12Si (wt. %) filler metal causes its liquidus temperature to decrease by about 23 °C. An addition of 30 % zinc into such Al-Si-Ge ternary alloy will cause its liquidus temperature to drop further to 525 °C. The solders have good wettability with Al. With the increase of Zn content in the alloys, the spreading areas of solders exhibit nonlinear decrease, and there exist a very large value at the zinc content of 15%. When Al-Si-10Ge-30Zn solder was used to braze the pure aluminum, an optimized bonding strength of 116 MPa was achieved.

Based on multi-source substation equipment inspection data, this article achieve fault diagnosis in the case of incomplete understanding of the mechanism of substation equipment, by establishing fault diagnosis model.This article selected a substation equipment failures and operational information in different conditions as simulation study. The simulation results show the feasibility of the algorithm. Compared with the traditional fault diagnosis model, this method is more flexible , have a stronger ability to handle noisy data and good prospects.

This paper presents a 20 Hz to 200K Hz alternating current (AC) and direct current (DC) analog-to-digital converter (ADC). The strange to minimize the zero crossing noise adopts hysteresis comparison technique. Multi-slope integral technique is also employed to enhance measurement accuracy. Furthermore, an algorism is designed to eliminate measure error. The prototype ADC achieves millivolt precision.

Based on image processing of SF6 gas leakage on-line pattern recognition method, this paper achieves gas leakage feature extracting, on-line identification of gas leakage and leakage points, SF6 gas leakage can be on-line automatic identification. The simulation results show the feasibility of the algorithm. Compared with the traditional method, paper provides a more intuitive discrimination basis for field staff , as well as for the depth of the late testing data mining provides a research way of thinking

Fuzzy set sorting method is studied in this prepare. Firstly, a sorting method of Fuzzy number is proposed under the condition of rough fuzzy number. Use rough fuzzy number to approach fuzzy set by rough set and fuzzy set; it is an approximate expression of fuzzy set. Secondly, prove partial order structures above method and give an example for fuzzy set sorting method, showing the whole process for the sorting method. Lastly, summarize the sorting method that is convenient, concise and easy to apply. It is enrich and supplement for fuzzy sorting method.

Steering axle and steering knuckle arm often appear craze problem within its service life. In this paper, the structure of a car steering knuckle was investigated using finite element program at uneven road surface conditions, emergency braking condition and sideslip conditions under the condition of full load. The results show that the joint shaft neck and adjacent shoulder of steering knuckle are the easiest to be damaged. At the same time, the steering knuckle meets the strength requirement under various conditions. Secondly, use the theory of fatigue to analysis and consider parts material fatigue properties, mean stress and other factors. Steering knuckle fatigue simulations use the ANSYS software to estimate the fatigue life. Under the condition of loop 900000 times, there was no damage in steering knuckle. According to the analysis results, reduce stress concentration and the surface roughness for steering knuckle improvement measures are proposed

A multi-function half-real object integration research platform based on virtual instrument technology was designed to meet the needs of the design of magneto-rheological damper. The platform is an integration of multifunctions which mainly includes assisted optimal design, controller management, algorithm simulation and online real-time performance test. This paper introduced the design of hardware and software in detail. The experimental results showed that the platform has many advantages in such aspects as complete functions, stable performance, accurate test and stronger visualized data analysis.

Proposes a new scheme for low quality fingerprint images which is used point oriental image and based on gray distributing rule of the pixels after investigating existing approaches to fingerprint segmentation. Experiment results indicated that this scheme performs better than traditional fingerprint image segmentation alogrithms. And it has higher performance in terms of efficiency and robustness.

Combined with the finite element method (FEM) and the field data of Shenyang Metro NTR engineering for pipe jacking process, the variation of surface deformation and influence factors of NTR construction are systematically analyzed. The result is shown that the curves of the lateral surface subsidence produced by pipe jacking process are accord with the normal distribution curves put forward by Peck .When the top steel pipes are jacked , the surface subsidence develops rapidly and the rate of deformation is larger. In addition , grouting behind the wall and the sequence of the pipe jacking all have a greater impact on the deformation of the layer.

From 1980 to 2012 there were 80% carbon dioxide emission from traditional fossil energy in the world, and the proportion reached 90% in China, which was the top of carbon dioxide emission and energy consumption. In order to release the pressure of short term energy-saving and emission-reduction, as well as implement energy system cleaning in long term, reversing the positive situation of energy structure adjustment and the advancing the continuous evolution of energy consumption structure will be the effective methods. This paper takes Hebei Province and the whole country as the research objects, analyzes the influence of energy consumption structure changes on carbon dioxide emission and the correlation effect between energy consumption structure and carbon dioxide emission intensity by constructing a correlation model between energy consumption structure and carbon dioxide emission intensity, discusses the effective strategies for the regional energy-saving and emission-reduction.

In recent years, with the development of modern technologies and safety science, catastrophic accidents tend to be avoided successfully. However, general accidents which cause minor loss or casualties still occur occasionally and hence become main part of all accidents. Therefore, to make effective control of general accidents, fault trees are established based on the analysis of historical general accidents. The influencing factors are roughly divided into human factors and equipment system factors. This paper focuses on human factors and the relationships between the factors and general accidents are analyzed using the improved analytic hierarchy process (AHP) and methods of risk identification. The importance of the factors is thus evaluated. Results of the evaluation are helpful to management.

The magneto-rheological (MR) vibration reduction control technology is studied and a design and implementation of an automobile MR vibration reduction control system based on ARM9 is given in this paper. This paper introduces the system design process of embedded controller, current driver and other hardware, system software structure. Design of real time control system can realize the multi-channel vibration signal acquisition, control algorithm, CAN communications and other functions. The simulation and experiment show that, the control system software and hardware design can meet the functional requirements and have the advantages of fast response, high control precision and working stability.

The corresponding discharge waveforms were detected by ultrasonic sensor. The dimension of feature vectors extracted from discharge waveforms were reduced by local linear embedding algorithm. The processed vectors were used as input to train and test BP_Adaboost classifier. Recognition results show that, high voltage reactor insulating defects recognition with this method can reduce the calculation and maintain a high recognition rate at the same time. This shows its effectiveness in the application of partial discharge pattern recognition.

NaOH, Na2CO3 and NaNO3 loaded on carbide slag are used as transesterification catalysts in a batch-type transesterification system. The activated catalysts are characterized by X-ray diffraction and the corresponding catalytic efficiencies are compared. NaOH loaded on calcined carbide slag gains the highest catalytic efficiencies. The optimal activated temperature of NaOH loaded on calcined carbide slag is obtained.

PLLA / OMMT composite films were prepared through solution casting method, in which chloroform was used as solvent. Mechanical, thermal and crystallization properties of neat PLLA and PLLA / OMMT composites films were investigated as well as morphology through scanning electron microscope. It was shown that tensile strength of PLLA / OMMT composite films gradually increased with increasing OMMT content, but reduced when more filler were added. Loading of 2wt% of OMMT seemed to benifit PLLA in tensile strength most. With the increase of montmorillonite content, the elongation at break of PLLA decreased first and then reached to a steady level. When compared with pure PLLA, the composite system showed decreased spherulite size, lower degree of order and an increase in the number of grains. Thermal analysis has proved that the addition of OMMT greatly enhanced crystability and thermal stability of PLLA.

The paper focuses on the poultry meat production efficiency analysis methods. In the poultry meat production procedure, the randomness is strong due to the various complex factors in the poultry meat production which will reduce the production efficiency. In order to avoid the defects of the traditional algorithms, the paper proposes the poultry meat production efficiency analysis method based on RBF neural network algorithm. The effect factors in the poultry meat production will be sifted as the basic data for production efficiency analysis. The RBF neural network model is built and the output results are used to analyze the poultry meat production efficiency with intelligent devices. The experiment results illustrate the improved algorithm can increase the poultry meat production efficiency.

Synchronization problem between QCNN (Quantum Cellular Neural Networks) and duffing system was studied in the paper. Not only one new controller with less parameters in QCNN was designed, but it was proved by Lyapunov function that output signal would be convergent to reference signal, and meanwhile, forms of multi-dimension controllers were given. Then the synchronization structure was draw with the corresponding controllers. In the simulation results, the new controller has higher time efficiency, which shows applying the new controller to QCNN is feasible and effective and it can assure the achievement of synchronization. Furthermore, weak periodic signal can be detected in QCNN, which provides one new thought to detection of weak signal.

This paper studied the application of fuzzy comprehensive evaluation in meteorological mutation identification of load forecasting. It measured out a specific algorithm in meteorological mutation identification of ultra-short-term load forecasting, so that to improve the load forecasting accuracy and reduce the relative error. When using the fuzzy comprehensive evaluation method, set the membership function and factor right based on the characteristics of a province for the summer weather factors, and measure the mutation membership value with the appropriate operator, which can provide a reference for the study of meteorology identification. The result shows that using fuzzy comprehensive evaluation to identify meteorological mutation has good usability and accuracy.

A novel starch-based material, designated as DASU-EDTA, was firstly prepared by the reaction of EDTA anhydride with previously synthesized dialdehyde urea starch (DASU). This material was characterized by IR spectroscopy and used as an adsorbent to remove Cu (II) ions from aqueous solution. The IR results showed EDTA was successfully attached to the glucose units of starch, and DASU-EDTA was one of starch amides derivatives. The adsorption tests revealed that the adsorption of DASU-EDTA for Cu (II) ions was an endothermic process, which mainly relied on the strong chelation of EDTA to metal ions. The optimal conditions should be controlled at pH 5.0 and 120min. In addition, it was found that the high initial concentration of Cu (II) ions was favorable for the adsorption of DASU-EDTA for Cu (II) ions.

Clustering analysis continually consider as a hot field in Data Mining. For different types data sets and application purposes, the relevant researchers concern on various aspect, such as the adaptability to fit density and shape, noise detection, outliers identification, cluster number determination, accuracy and optimization. Lots of related works focus on the Shared Nearest Neighbor measure method, due to its best and wide adaptability to deal with complex distribution data set. Based on Shared Nearest Neighbor, an improved algorithm is proposed in this paper, it mainly target on the problems solution of natural distribute density, arbitrary shape and cluster number determination. The new algorithm start with random selected seed, follow the direction of its nearest neighbors, search and find its neighbors which have the greatest similar features, form the local maximum cluster, dynamically adjust the data objects’ affiliation to realize the local optimization at the same time, and then end the clustering procedure until identify all the data objects. Experiments verify the new algorithm has the advanced ability to fit the problems such as different density, shape, noise, cluster number and so on, and can realize fast optimization searching.

Detection of ultra-weak bioluminescence for freshness of corn is not only a problem of corn safe storage but also related to corn quality. The paper built a Virtual Instrument platform based on LabVIEW and PXI4220 modularized hardware of NI. Then, a testing and analysis system for corn ultra-weak bioluminescence features was designed. Different freshness corns were tested and analyzed about the relation of freshness and ultra-weak bioluminescence features. The experimental results shows that the ultra-weak bioluminescence voltage peak values of different freshness corns all maximize about 1 hour, and voltage peak values between different freshness corns have no evident relationship. However, the ultra-weak bioluminescence voltage energy sum of different freshness corns increase progressively with the freshness degree. So, detection of voltage energy sum of different freshness corns can reflect wheat freshness effectively. Comparing with traditional method, the freshness detection method based on wheat ultra-weak bioluminescence features can realize precise, rapid and nondestructive examination.

Because small value and rapid changes, bus load is severely affected by meteorological factors. The article focuses on the precipitation, the average pressure, the average wind speed, the average temperature and the average relative humidity, and identifies the meteorological mutations. In the case when there is no mutation, predict the load trends based on the Single Exponential Smoothing method, otherwise, if there exists meteorological mutation, use SVM model to predict the load, as well as in the event of extreme weather conditions, start the emergency warning plan. By the case study of the No.1 main transformer of certain area in Jiangsu Province, the result shows that this method has good prediction results.

By analyzing the dynamic model of working mechanism for excavator, motion status of working mechanism during digging process was researched. The tests under two kinds of commonly operating conditions for the motion of excavator were carried out by method of ultrasonic distance measuring. The results show that the motion law of working mechanism under two kinds of operating conditions was basically similar, and digging process presented periodicity clearly. Each excavating period included four stages which were bucket excavating, boom lifting, medium dumping, and working mechanism returning respectively. One-arm excavating and two-arm linkage excavating was main operating method for excavator. The purpose of three-arm linkage excavating was to adjust excavating posture, therefore, which often happened in a short time during an excavating period, and appeared relatively few during digging process.

The research is to automatically testing and analyzing machining accuracy for the finished product by Pneumatic Measuring technology including the technology of data acquisition and the theory of disposition of data .To build a feasible system to analyze the machining error using Pneumatic measuring instrument to measure the parts by sensor to change the atmospheric pressure. A data acquisition card is used to gather and save the data. By programming software to write internet applications to statistical analysis for data, draw normal distribution figure, scatter diagram and histogram. To analyses the graph gains estimate the machining error and improve the performance for machine. By the experimental tests verify the feasibility and validity of the system.

In order to satisfy the orientation measuring requirements of rigid-body such as work piece, cutting tool in industry, the paper presents a binocular vision detection technique based on spatial position information of markers to extract rigid-body pose information and analyzes the pose accuracy of rigid-body using the principal component analysis (PCA) when spatial position error of markers exist. The simulation experiment demonstrates the maximum angle error of orientation is about 0.59 degree when the position error of markers satisfy the Gaussian distribution with the mean is zero and the standard deviation is 0~3mm. The experimental results verify this method can robustly solve the orientation of rigid body using the position information of markers with position errors, and it provides a theoretical and experimental basis for orientation measurement of rigid body.

The cooperative output regulation problem for a class of nonlinear uncertain multi-agent systems is considered. Based on the distributed internal model, the problem is firstly transformed into a global stabilization problem of the augmented system. Then, using the backstepping design method, a distributed control law with its stability analysis is proposed to solve the global stabilization problem of the augmented system. Finally, a numerical simulation is made to show the efficacy of the analytic results.

In order to establish monitoring systems for micro vibration due to electric spark occurs in the faulty cable, a novel acceleration sensing structure utilizing the piezoresistive principle is presented. The mechanical model and its mathematical solution are established, which have been developed in order to calculate the sensitivity and frequency behaviour of an acceleration sensor. The sensor is built up as a sense beam and a supplement beam is supposed to have high sensitivity, low resonant frequency and minimized lateral effect. For the designed sensor structure, the formula of stress, natural frequency and damping was derived in theory, and the optimized structure is confirmed through adjust the beams size.

A new modeling method for the variable ratio gear of the rack and pinion variable ratio steering gear was proposed in this paper. It was based on the characteristic that variable ratio gear pair meshing tooth profile surface are the envelope surface of each other and established a variable ratio gear three-dimensional model by simulating the gear machining process in CATIA and using Boolean subtraction operation. According to the related test standard of the variable ratio steering gear transmission ratio, a test bench was design and build, and the correctness of this modeling method was verified by comparing the designed variable ratio curve and the steering gear sample designed and processed by this method.

The flow signal is one of the main parameters of hydraulic system monitoring. Since the majority of fault features can be shown by dynamic traffic signal, The study of dynamic traffic signal has very important significance on the evaluation of the performance of hydraulic element and characteristics of the hydraulic system. In this paper, the flow meter dynamic signal was simulated by the self-designed test-bed called multi-functional gear flow meter speed detection test-bed. The experiment indicates that the using PLC control of inverter and motor can realize high frequency dynamic oscillating of gear, oscillation frequency can reach 2Hz above. If the accuracy is met with, flow meter dynamic characteristic can reach 10Hz through the test-bed simulation, which provides the basis of theory and experiment for the real-time dynamic flow characteristics test.

According to XRD, DTA and SEM detections, the hydration products of blast furnace slag based cementing material SL, SLG. were studied in different age periods. The XRD analysis of cementing material SL hydration products showed the composition of hydration products were mainly amorphous substances, few crystalline substances. Characteristic peak of ettringite, such as AFt, hadn’t been found in the spectral line of DTA, and it hadn’t been found in the figures of SEM, either, which was accordant with the conclusion that the cementing performance of SL mainly coming from gel of hydrated calcium silicate (CSH) and hydrated calcium aluminate. But the cementing performance of SLG mainly coming from Aft, CSH and AFm from hydration products analysis of different age periods.

High voltage circuit breaker is one of the most significant devices and its health status will impact security of the power system. In this paper, the method of high voltage circuit breakers mechanical fault diagnosis is discussed, fault diagnosis method based on vibration signal is proposed. Firstly, the collected acoustic signals are proceed by blind source separation processing through fast independent component analysis. Then, the acoustic signal feature vector is extracted by improved ensemble empirical mode decomposition (EEMD) and the residual signal is filtered by fractional differential. Finally, the feature vectors are input into support vector machine (SVM) for fault diagnosis. Experiment shows that the proposed method can get more precise fault classification to high voltage circuit breakers.

The finance is the key factor in the operation of the market economy, and how to specifically evaluate the fiscal expenditure performance and the budget is a very important problem. This paper describes the effect of fiscal expenditure on the performance evaluation in detail, minutely researches the actual calculation process for performance budget, discusses the problems in the evaluation system according to the contents above, and offers the targeted suggestions to how the performance budget should reform.

In order to accurately and effectively evaluate the trust level between enterprises whose supply chain exists in direct transactions, this paper proposed a trust level evaluation method based on reputation, this method by introducing corporate transactions satisfaction level, corporate transaction amount, corporate transactions time, corporate transactions number and rewards and punishments factor five factors, which make description and measurement of corporate reputation more accurate. Meanwhile, in order to improve the measurement accuracy of corporate transactions satisfaction level, this paper proposes a transaction satisfaction evaluation method based on fuzzy evaluation, the transaction satisfaction were evaluated from product quality, product cost and completion time three aspects. Simulation results show that the model proposed by this paper can effectively evaluate the direct trust level of supply chain enterprises by the reputation. Compared with similar existing trust model, this model evaluates direct trust between enterprises more accurately and objectively. It also effectively reduces the occurrence of corporate fraud and speculative behavior.

For the circuit breaker, mechanical fault make up the largest share of the fault. In order to ensure reliable and secure power system can run,it is necessary to monitor the mechanical properties of the circuit breaker,which includes monitoring the breaker trip.By TLD video tracking technology ZN65-12 vacuum circuit breaker mechanical properties were measured,obtain a two-dimensional direction of travel, speed characteristic curves.The experimental results show that the error of the method used to obtain a circuit breaker stroke, speed and other parameters of not more than 1mm,compared with traditional methods of measurement can get richer information.

The object of this work was to determine the solubility and stability of the synthetic Sr5(AsO4)3OH solid solution at 25°C and the different initial pHs (pH at 2, 6 and 9) by batch dissolution experiments. The results indicated that with the initial pH value of 2, 6 and 9, the reaction system reached equilibrium after 2880h, and by that time the pH value of the solution reached, 7.90, 8.74 and 8.27 respectively. The concentration of strontium and arsenic in the initial solution pH at 2 are higher than that of solutions pH at 6 and 9. While the concentration of strontium in neutral or alkaline solutions is low and stays unchanged.

A model was developed for the enriched air-steam biomass gasification in a bubbling fluidized bed (BFB) gasifier using Aspen Plus. Restricted equilibrium method was used to eliminate the deviation caused by the diffusion effect of gas-particle. The model has been divided into three stages (drying and pyrolysis, partial combustion and gasification) for predicting the gasifier performance. Simulation results for gas composition, carbon conversion and cold gas efficiency versus oxygen percentage and steam to biomass ratio (S/B) were compared with the experimental results. Higher oxygen percentage improves the gasification process, increases the production of H2 and CO and results in better gasification efficiency. With increasing oxygen percentage, the production of CO2 and CH4 show decreasing trends. Steam injection enhances the H2 and CO2 production but decreases CO and CH4 production. Carbon conversion presents a slight decrease trend over the S/B range, while cold gas efficiency is first constant and then decreased.

The Rayleigh approximation model is used for analyzing fog attenuation of the HAP-based communication system, the influence of transmitter elevation to fog attenuation under different temperature and liquid water density are studied, Numerical results show the optimum transmitter elevation angle in a ka-band HAP-based communication system under fog attenuation.

Information engineering project has the characteristics of complex systems engineering activities. In system point of view to the problem of information engineering supervision system evaluation and system control problems, tracking problem, system optimization and system management. Study the goal of information engineering supervision control system and analyzes the information engineering supervision in the construction period, quality and cost. The relationship of the three objectives and method of control target, points out the information engineering supervision in stages of task, put forward to measure and estimate method for quantitative information engineering supervision.

In order to further improve monitoring safety of oil and gas pipelines, a leakage detection technology for natural gas pipelines with distributed Fiber Bragg Grating (FBG) is put forward. Optical fiber, set up along pipelines acting as FBG sensors, is used to acquire pressure and vibration signals created by some events such as leakage, mechanical disturbance. Through grating matching and automatic distinguish technique leakage can be detected and located. Moreover, independent component analysis (ICA) technique is studied and used to separate useful signal from noise. Theory analysis and experiments showed this method has good capacity to detect and locate leakage effectively in pipelines.