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Most of the product design on the market is variant design or adaptive design, which need to reuse existing product design knowledge. A key aspect of reusing existing CAD model is correctly define and understand the design intents behind of existing CAD model, and this paper introduces a CAD model annotation system based on design intent. Design intents contained all design information of entire life cycle from modeling, analysis to manufacturing are marked onto the CAD model using PMI module in UG to improve the readability of the CAD model. Second, given the problems such as management difficulties, no filter and retrieval functions, this paper proposes an annotation manager system based on UG redevelopment by filtration, retrieval, grouping and other functions to reduce clutter on the 3D annotations and be convenient for users to view needed all kinds of annotations. Finally, design information is represented both internally within the 3D model and externally on a XML file.

At present, use of computer aided engineering (CAE) software is rapidly expanding in the manufacturing industry. However, the CAE software is not an easy tool to use because of its versatility and amount of expertise required to understand and evaluate simulation results. So the operation is more complex, and the error rate is higher in the engineering analysis. A CAE Intelligent Assisted Expert System (IAES) that supports Finite Element analysis was proposed and implemented. The CAE IAS is implemented based on VS2012 development environment, which is based on case and rule based reasoning. It is used to guide and assist CAE engineers to analyze the project, so that the accuracy and efficiency of the analysis are greatly improved and the product performance is better optimized.

Fragility curves for typical multi-span simply supported concrete box girder bridges in eastern China are presented. A set of bridge samples, of which five uncertain parameters are considered, is established using the Latin hypercube sampling. Nonlinear time history analyses are conducted to capture the structural response quantities. Probabilistic seismic demand models are formulated by quadratic regression analysis for the capacity/demand ratios. Fragility curves of bridge components are developed and the fragility of bridge system is evaluated using the first-order bound method. The results show that the columns and expansion bearings among bridge members are more fragile under earthquake excitation, and the bridge system is more fragile than any bridge component. The typical bridges have more than 50% probability when subjected to PGAs of 0.46, 0.58, 0.82, and 1.0g for four damage states, respectively. The fragility curves can be used for retrofit prioritization for this type of bridges.

The era of high speed railway has come and the most important issue of the high speed train is the safety, which is directly related to billions of families. One of the most serious threats to the safety of the high speed train is the vibration of train body at curve track, which may cause the train off the track. Semi-active vibration control method is a possible solution compared with active control method which has robust problem and passive control method which has efficiency issue. Magnetorheological technology is a typical semi-active vibration control method which has been widely used in the automobile, architectural construction and aerospace. The high speed train using magnetorheological technology has not been fully investigated especially for the dynamic performance at curve track. In this paper, a high-speed train model with MRF dampers is simulated by a combined ADAMS and MATLAB simulation. The dynamic performance of high speed train operating at different speeds and turning radius is investigated to reveal the mechanism of how the MRF damper affects the train’s stability and vibration. The results show that the semi-active suspension installed with MRF dampers substantially improves the stability and dynamic performance of the train at curve track.

Ferric hydrosulfate minerals are commonly byproducts of biotic oxidation of Fe (II) in acid mine drainage and biohydrometallurgy like biogenic jarosite. In this study, adsorption of Cr (VI) on jarosite was a rapid process and the optimum pH for Cr (VI) adsorption was found at 7.0. The variation of Cr (VI) adsorbed on jarosite fitted the Langmuir adsorption isotherm models and the maximum adsorption capacity was 3.23 mg/g. It was evident that anion exchange mechanism was responsible for Cr (VI) adsorption on jarosite based on the sulfate leaching data and optimum pH experiments.

Skylight polarization pattern is used as an important navigation clue for desert ant and bees. The paper will present a new solar direction extracting method based on the polarization degree measurement. Two kinds of solar direction calculation model will be derived, one is by the polarization degree measurement of two observation directions, the other one is by the polarization degree and polarization E-vector direction measurement of the same observation direction.

Using BP neural network method, we calculate and analyze the molecular structure of aromatic hydrocarbons. Then, we get the electrotopological state indices and the molecular electronegativity distance vectors of 25 aromatic hydrocarbons based on the calculation of molecular structure characteristics and adjacency matrix. By regression, we get and optimize the structural parametersE9,E13,E17andM15. The four structural parameters are used as the input variables and a 4-2-1 network structure is employed to construct a BP artificial neural network model for predicting acute toxicitypEC50. The total correlation coefficientRis 0.994 and the average error between the predicted value and experimental value ofpEC50is 0.079, which indicate that the ANN model has good stability and superior predictive ability. The results show that there is a good nonlinear correlation between acute toxicitypEC50and the four structural parameters. The results of our research reveal that the toxicity of aromatic hydrocarbons is closely affected by electrotopological state indices and the molecular electronegativity distance vectors. Therefore, it will be helpful in assessing the hazard of aromatic hydrocarbons to environment.

This paper introduced the structure and special property with type device, analyzed how to realized programmable analogue function module with digital potentiometer. This paper gave a design example of programmable second-order active low pass filter by using digital potentiometer. The programmable filter can be application to the signal filter processing of data acquisition systems. This paper has reference value of theory and practice on the application of digital potentiometer

This paper presents a scheme of information transmission system for undersea observation platform based on all-optical network. Through flexible using of WDM, OADM, EDFA, RFA, DCF and other technology, it effectively compensates chromatic dispersion, restrains nonlinear effects and noise problems. Fibers in primary nodes are directly assigned to ensure mutual independence between different transmission links. Dual-fiber bidirectional transmission mode that wavelength of one fiber drops to the node by OADM, then return to the same transmission station in the other fiber, increases the reliability of the transmission system. The simulation results show that this scheme can ensure information transmission quality and effectively achieve wavelength adding and dropping, further verify the feasibility of the scheme.

Two typical structures to concatenate bridge and tunnel portal for railway line on high and steep mountainous slope have been presented according to the complicated landform and ground geology in a new high speed railway line. Comparison between the two types of bridge-tunnel concatenation shows that separated structure is more superior in lessening train vibration than integrated structure. The prevention of rockfall from front slope at tunnel portal is still considered in the two structures. The concatenation types presented in the paper can be used to guide the design of bridge-tunnel concatenation in high speed railway line on complex and abrupt mountainous slope.

The output characteristics of solar cell that researched as the target is analysed at different temperatures and light intensity .Combining with the equivalent circuit of solar cell, mathematical model is established .The system is simulated through MATLAB/Simulink and the data is compared with the actual one. The experimental results show that the model can well reproduce the output characteristics curve of solar cell at arbitrary condition and the error between the model and the actual output is decreased because of the series resistance. The system can satisfy the requirements of engineering design, in addition, the system can provides theoretical basis for simulation study of solar power generation system.

On the basis of different landform and multifarious topography in rugged mountainous area in southwest China, typical tunnel portals for single track tunnels in a new high speed railway line have been presented in the paper. The portal comprises headwall, shed tunnel, bridge abutment and its support. Portal with headwall is suitable for tunnel to resist front earth pressure on high and abrupt slope. Shed tunnel is placed in front of headwall so as to prevent rockfall; its outward part is built into a flared one. Meanwhile, the installation of bridge and its abutment are also included in the portal according to landform in the paper.

This article in view of the present large complex planee parts due to large size,complicated structure, detection method and technical route problem affecting precision and difficult to achieve part, through the use of advanced portable measuring equipment (Metronor light pen measuring instrument, laser scanner and laser tracker device) and product 3D model information to build a reasonable detection technology platform, in view of the different components of the inspection requirements and purposes, using different method to creat the datum, measurement and the assistant tools of different detection technology route, solved the aircraft large, complex parts, assembly process control and quality control in product processing, the difficulty of assembly accuracy control, not only improves the precision of large parts quality and throughout the aircraft parts manufacturing and assembly process reached the assembly efficiency high assembly quality requirements, meet the requirement of aircraft parts assembly process, for large, complex parts of aircraft digital detection technology to lay the solid foundation, further accelerate the process of the development of the current aircraft digital measurement adied assembly technology, improve the efficiency of product processing, lower the manufacturing cost.

Green consumption embodies the pursuits of environmental safety and health. Most of western countries have begun to promote the concept of green consumption since the 20th century. With a relatively slow development, Chinese government began to introduce this new concept till 2001. Some Chinese consumers have built green awareness and realized the importance of green consciousness since 2008. However, there is still a need for Chinese government and researchers to examine the effective factors which can influence and accelerate the development of green consumption in China. This paper reviews the current literatures related to green consumption and green consumer. This paper also investigates the social and cultural factors which influence on the Chinese consumers in relation to green consumption.

The information extraction mode based on machining feature was presented for studying information extraction of part process model in the 3D CAPP system. The classification and its data structure of machining feature were investigated for defining the matching rule about the features. The feature authentication were availably fulfilled by converting the correlations of geometric topological into surface-edge adjacency graph for the part model, and the corresponding parameters extraction of feature were derived from traversing the feature tree of application development CATIA. The whole feature recognition process and parameter extraction process can become more directly and effectively by adopting the method of comparing machining feature with the predefined feature matching rules of the feature database.

An integrated model was developed for evaluating water resources sustainability. In the model, a new index was developed based on nineteen indicators related socio-economic, eco-environment and water resources. The interrelationships between indicators were quantified based on mathematical models. The integrated model was applied to simulate the water resources sustainability in Laoshan Region successfully from 2010 to 2030 after validation and calibration using historical data which has low relative errors and relative standard deviation (

The microwave pyrolysis is a new research method for deeply processing of coal. This paper researched the microwave pyrolysis products of low rank coal under N2 and non-N2 atmosphere. The results showed that, compared with non-N2 atmosphere, the yield of liquid products increased by 4.65%, while the yield of solid bluecoke decreased by 2.95% under N2 atmosphere. The infrared characteristics absorption peak intensity of bluecoke obtained from N2 pyrolysis atmosphere was weaker; N2 contributed to the transformation of heavy oil into light oil.

Environmental protection is an important concept of sustainable development. As the main player of sustainable development, enterprises should pursue the ecological, economic and social sustainable development and take social responsibility for the harmonious development of the society and environment. Under the consideration of environmental protection and sustainable development, enterprises should behave environmental friendly to obtain the legitimacy from constituencies. Based on the theme of environmental protection, this paper introduces and discusses the literatures related to sustainable development and legitimacy of enterprises.

The paper research a health examination robot, which set height, weight, blood pressure, blood glucose, cholesterol, blood oxygen, electrocardiogram (ECG), energy check in one certain. In the design, adopt 32 bit embedded ARM micro controller NuMicro NUC140, RFID card reader, oxygen check control module and ECG check control module, taking into account the system connection and RFID identification, parameters of historical data query and ECG check process. Experimental data show that system functions are realized and to promote low-cost medical treatment.

Microwave pyrolysis of low rank coal is a new technology of cleaner production. The effect of microwave power and flow rate of N2 on the yield of pyrolysis products under N2 atmosphere was explored. The results showed that the higher microwave power was, the higher all the terminal temperature, the yield of liquid products and the weight loss rate were. The flow rate of N2 had little influence on the yield of pyrolysis solid products, while it exerted a greater influence on the yield of pyrolysis liquid products. When the low rank coal was pyrolysised under the conditions of microwave power of 800W and flow rate of N2 of 4.0×10-4 m3/min, the yield of Bluecoke and liquid products respectively reached 65.8% and 18%.

This paper investigated the problem of transmit power minimization to meet the users’ outage probability constraints in downlink smart antennas-MIMO (SA-MIMO) systems. Firstly, a downlink multi-user SA-MIMO system model is established, and the transmit power optimization problem is formulated. The optimization problem jointly optimizes the beam-forming vectors and user outage probability. Then, the outage-based optimization problem is transformed into a geometric programming problem in which the beam forming vectors were obtained by maximum diagonal element (MDE) rule. Some numerical results show that the proposed method in this paper is viable and the transmit power in downlink SA-MIMO systems significantly descreases relative to traditional MIMO systems.

Based on the investigation and indoor experiment, the flow structure and properties of erosion or deposition associated with permeable spur dike were researched. According to the new demands about engineering structure in mountain rivers regulation, the potential action of permeable spur dike in mountain river training was analyzed. The results can be showed that, as the permeable structure, the influence of permeable spur dike to main flow and flood level is less than the solid one, and the local scour depth is less too, so the permeable spur dike has larger safety. In the back of permeable spur dike, it can form a slow flow field, instead of a circumfluence field, and the deposition volume is less than solid one, so the steady slow flow field can benefit to the small aquatic animal lives. The pervious rate can be adjusted to complete training goals when the project faces to different training demands. And the material of spur dike is not limited, it can use the local materials to build, which can reduce the construction cost. The permeable spur dike have a good applicability in the control of mountain river, it can meet the requirements of flood prevention, ecology, environment, cost saving and so on, it have a greatly application prospect.

As one of the typical social media categories, microblogs have become the hot vehicle for online communication and interaction since 2006. Not only individuals, but also organizations are all fascinated to open their own microblogs. Government microblogs launched by Chinese governmental agencies have showed the blowout development since 2011. These microblogs devote to release public information, guide public opinions, promote government and place images and fulfill administrative transparency. This paper will introduce the development of government microblogs in China and articulate suggestions for effective utilization of government microblogs as a vehicle for e-government.

Aim at developing power generation technology using the waste heat of the cell sidewall, a heat recycle installation was designed and used for recycling heat of the sidewall of a 400kA aluminum reduction cell. A 3D slice finite element model of aluminum reduction cell was established by using ANSYS finite element analysis software, and the coupled thermo-electric simulation for a 400kA cell was analyzed under installing the exchanger or not. The simulation results show the average temperature of main heat dissipation area of the cell is significantly decreased after installing the exchanger, and the thickness of freeze would also increase 1.7cm, which benefits in decreasing the heat dissipation and protecting the lining of the cell.

A cooling plate with staggered micro-groove structure was designed to replace traditional straight groove structure which cannot meet the VSC-HVDC cooling requirement. On the basis of reasonable physical and mathematical models, the thermal process was simulated based on Icepak, and experiments were designed to verify the reliability of the numerical simulation results. Results showed that the thermal resistance of experimental is 0.00538K/W and pressure drop is 1.03bar, which can meet the technical requirement; The differences of pressure drop and thermal resistance between simulation and test results are 9.4% and 7.4% respectively. It also provides an important method for the design and improvement of cooling plate in engineering application.

In this paper, we shall first briefly introduce the hydraulic junction of three-sources branched heat-supply network and the related optimization method. It's difficult to guarantee that the system runs in optimal state and it increases energy consumption in the system. In view of this situation this paper proposes a method to find the optimal positions of hydraulic intersections based on analyzing a real heating system with three heat sources in Jining. The optimization objective is to minimize the electric power consumption of circulating water pumps in district heating system. Finally, optimization programs are designed and the optimized results verify the feasibility and validity of the method compared with conventional experience values.

The energy consumption of several central air conditioning systems in summer was researched by the method of exergy analysis. Combined with actual example,the exergy loss of all the equipments and the exergy efficiency of three systems were calculated. The results show that the exergy efficiency of three systems is very low. Relatively speaking, the exergy efficiency of primary return air conditioning system with supplying air in dew point is highest. The equipment of highest exergy loss is air-conditioned room, while the exergy loss of surface air cooler is smallest. Based on this, several improvement measures were proposed to reduce exergy loss and improve exergy efficiency.

Under the different client scales, distributed parallel computing were employed in the two-dimensional reconstruction for digital human images. Through this way, the speed ratio for reconstruction could be greatly improved but the serial processing and communication overhead restricted the further parallelize scale.

In this paper, the non-probabilistic reliability optimization problem of linear structural system with uncertain parameters described by interval models is proposed. The degree of the uncertainty is described by the size of the hypercube, and the maximum degree of variability the structure allows is measured by the non-probabilistic reliability index. The relation between the target of non-probabilistic reliability index and the fluctuation range of uncertain parameters is described by the geometric meaning of the reliability index. For the linear function, the uncertain parameters are expressed as the expression of the target value of non-probabilistic reliability index. Numerical example shows the validity and efficiency of the proposed method.

Study on the deterioration of the constant current remote feeding system throughout the life of the structure is always one of the most important issues in seafloor observatory network reliability engineering. Relationship between current-to-current convertor subsystem and amount of loads in branch line is described by introducing failure rate factor. Multistate reliability model of remote power feeding system has been set up and solved by genetic algorithms. Simulation results show that as the load configuration in trunk line and branch line changing, there exists best combination maximizes the system reliability, besides, appropriate increasing amount of loads in branch line can optimize the preventive strategy.

In order to wash the polluted substation insulator quickly and safely, so as to improve the reliability of substation systems, an on-line dry ice washing system which would be applied in 220 kV voltage level was developed. Based on the results of the indoor simulation tests which provided the optimal washing parameters, the on-line dry ice system was developed. Moreover, a trial test was run in a 220 kV substation belonging to Hubei State Grid. The test results show that the vehicle system can meet the requirements of on-line washing tasks in 220 kV substation. Therefore, the washing system features advanced technology, excellent performance, and promotional value.

Complex structural pattern and behavior of Large-span steel structure result in famous research of health monitoring technology of this kind structure all over the world. Health monitoring to key parts of large-span steel structures during the construction and service process grasp the stress situation, which can ensure the safety of structures. In this paper, health monitoring project of Jinan Olympic Sports Center is introduced and the basis of test points’ layout is elaborated in detail. The result shows that the system designed is running stable, which means it has certain application value to other health monitoring to major engineering.

Typically, the selection of large aggregate particle size is mainly determined by the thickness of structures and the thickness of protective layer. The greater the aggregate diameter is, the smaller the specific surface is, and the smaller coating materials demand will be without specific requirements. It will affect the concrete flowability directly if there are too much big size of aggregates or the particle size is too big for forming a certain stable packing skeleton structure. The strength of the large diameter recycled self-compacting rock-fill concrete is low so that the primary cause of its failure mechanism is bond failure and bond slip in aggregate. Shear failure in aggregate is not easy to happen due to the strength of the aggregate is too low. For this reason, we put forward the general selection requirements for large diameter aggregate.

In order to study the effect of guardrail to main girder, simply supported beam load test is relied on to measure the deflection of main girder in different conditions, then whether guardrails involved in the stress of main beam or not in theory is analyzed to draw the conclusion that considering the guardrail in stress is closer to the actual stress of bridge and effects on stiffness of main girder are different in lateral bridge. Based on above four hypotheses are proposed and the guardrail along the bridge transverse triangular distribution to the 14% deck is in good agreement with the actual situation according to the equivalent height.

This paper mainly deals with the structural design of high speed railway tunnel and its driving method in abrupt slope with loose rockmass, meanwhile summarizes the connection between tunnel portal and bridge abutment in loose rockmass according to complicated landform and geology. The anti-slide piles are adopted to retain the stability of abrupt slope near the tunnel portal. In order to eliminate the risk and cost in tunnel construction, four bench cut method is invented to satisfy the safe excavation of loose rockmass in the tunnel. Composite fiber rockbolt is also employed to keep the stability of working face while driving the tunnel. The innovative tunneling method presented in the paper can be applied to guide the rational design and economical construction of high speed railway tunnels in loose surrounding rock under harsh geological conditions.

Complex structural patterns and behaviors promote hot researches of health monitoring technology to large-span steel structures all over the world. Health monitoring to key parts of large-span steel structures during construction and service processes grasp the stress situation, which can ensure the safety of the structure. In this paper, self-developed health monitoring system which use vibrating wire sensor, had been developed to monitor Jinan Grand Theatre Concert Hall. The monitoring results show that there is no significant damage occurred in monitoring positions, which proves a reasonable design and a safe and stable state of the structure. Meanwhile, the self-developed health monitoring system has a high accuracy and good stability and can be widely applied.

The solar direction is an important clue for satellite autonomous navigation. A new method for obtaining the solar direction from skylight polarization for satellite navigation is discussed. The new method is using two E-vector polarization sensors to get solar direction, and the view field of the polarization sensor is discussed.

This paper establishes computer CFD simulation mathematical model of large commercial buildings according to the principle of cubic interpolation function and determines the cubic interpolation function based on triangular elements method. It concludes the cubic polynomial in the process of simulation which improves the efficiency of computer simulation. This paper introduces modeling process and flow diagram of simulation process of numerical simulation of natural ventilation simulation of commercial building. It also simulates the indoor ventilation of building which treats the logistics field model of commercial tower building as the object of study. It concludes two-dimensional and three-dimensional contours of air and humidity. Finally, this paper gets the environmental distribution of the temperature through the simulation calculation and draws temperature change curve with distance which provides technical reference for the design of ventilation safe indoor.

3D visualization technology is a tool used for displaying, describing, and understanding the characteristics of geologic bodies, and features high efficiency, objective accuracy, visual expression, etc. In this paper, the man-machine interactive interpretation and 3D visualization technology rapidly displaying and analyzing the 3D seismic data of hydrate ore volume is researched and developed using the hybrid rendering technique. Through the integrated interpretation on the 3D space structure, stratum, and seismic attributes, the visualized multi-attribute superimposition analysis is implemented for describing the spatial distribution characteristics of hydrate ore volume and exquisitely describing the subtle geological characteristics of hydrate ore volume. By the hybrid rendering technique, authentication and interpretation are provided for the geological exploration work, so as to greatly enhance the visualization and accuracy of the geological analysis, and also provide a good decision-making foundation for the subsequent development of resources.

In many applications of modern world, moving object detection is an important work. Especially, the detection of moving object under complicated background has more difficult. On the basis of introduction of conventional detection methods such as temporal difference detection (TDD) and background subtraction detection, the paper proposes a new mathematical morphology based moving object detection algorithm in view of complicated background. The proposed algorithm utilizes the opening and closing operations to process the temporal differenced image. Then, it compares the processed image with the background differenced image. The experimental results show that the proposed algorithm can be able to detect the moving object effectively under complicatedly external environment and has a higher detection precision in contrast with the conventional temporal detection method..

This study presented a novel non-contact optical measuing method for grape stem diameter in fields. The main algorithm contained 3 steps: saperation of the stem from background, determination of the stem segment, and the computation of stem diameter. The experiments conducted in field not only validated the effectiveness, but also proved the high accuracy of the optical measuring system. And our further experimental results showed that the continuous measurement of grape stem diameter can provide periodic data for the analysis of physiological disorders in grapes.

A multi-fingered hand has been used in the explosive Disposal Robot to improve the disposal ability of explosive. Grasping ability of the multi-fingered hand is a problem with the change of grasping posture. This paper discusses grasping ability of the multi-fingered robot hand. Screw theory and BP neural network are used to optimize the joint angle of the finger. The most favorite grasping posture is calculated when the multi-fingered robot hand can withstand the largest external wrench. In order to guarantee the explosive not to be exploded under the exceeding grasp force, the weight of the explosive the multi-fingered hand can hold is also discussed in this paper. It is an important theoretical guidance for the multi-fingered robot hand handling of hazardous items.

In order to monitor the operation state and implement fault diagnosis of rolling bearing in rotating machinery, this paper presents a method of fault diagnosis of rolling bearing, which is based on EMD and resonance demodulation. Using EMD to decompose the signal, which comes from QPZZ-II experimental station, the components of intrinsic mode function (IMF) will be obtained. Then, calculating the correlation coefficient of each IMF component, the highest correlation coefficient of IMF component will be analyzed by resonance demodulation. Finally, the experimental results show that the method can accurately identify and diagnose the running state and bearing fault type.

Taking account of the economy, geography and ecological factors,based on the projection pursuit cluster, an optimization model for water-distributing weight is introduced with the eight factors (gross domestic product, industrial production, irrigation area, urban population, area of land, grosspopulation, cultivated land area and total water resources).Then the optimalwater-distributing weight which will promote sustainable development is worked out by genetic algorithm.