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OpenMP is one of the most popular parallel programming technique nowadays. Using openMP, programmers parallelized their serial programs by inserting directives. However, in addition to parallel algorithm related overhead which depends on how to design the parallel program, performing openMP also leads to overhead. In this paper, we give a model to evaluate the overhead, and design 5 groups of experiment to evaluate the overhead caused by starting openMP, scheduling and synchronizations. We also analyze the changes of the overhead with different scale of the problems and the number of parallel threads.

First, a certain type of ship azimuth servo system as an example, mathematical model with friction is established, then using LADRC to estimate and compensate the friction disturbance, greatly inhibit the effects of these disturbances on the servo system. The simulation results show that the method of ADRC can greatly improves system capacity and anti-friction disturbance.

In view of fake and shoddy cotton seeds appearing constantly, it damaged the interests of the farmers seriously. Accordingly, this paper proposed a method to solve the cotton quality and safety, which combined the technology of Radio Frequency Identificaiton (RFID) and the Internet. The cotton circulation management model has been constructed, developing the cotton quality traceability system. This will not only can help consumers identify the cotton quality, but also can prevent unqualified cotton into the market so as not to protect the interests of farmers and manufacturers reputation.

The article proposed a new research. The method may avoid interference of reverse drive vehicle by installing back-to-back reader in section, adopting active electronic tags to expand the scope and accuracy about reading and writing, using the information including the number of electronic tags in scanning section, update ratio, residence time to build the linkage system between control system and vehicle-mounted electronic tags, and cooperating with the signal condition in intersection, to make the discrimination of traffic state, especially the discrimination of congestion state. The method could identify the traffic state effectively, which was verified by simulated experiment through secondary development of VISSIM.

In view of the traditional zero-angle memory device with low precision and to reduce errors caused by manual readout, this paper using electro-magnetic technology, designed a new zero-angle memory device based on proximity switch. Experimental results show that the device not only improves the repeatability and reduces the error, but also realize automatic demarcation.

The process of PID parameters turning is complicated and time-consuming to engineering technician. To solve this problem, simulating the Z-N method of engineering turning, based on the simulink, a simple and efficient method for PID parameters turning is presented in this paper. Compares with the general methods, it has many advantages, such as simplicity, visual manipulation, leaving out the work load of program and so on. The simulation results show the effectiveness of this method and be fit for application in the engineering.

Aiming at the problem of electromagnetic interference in design and application of electronic rectifier and inverter system, introduces the electromagnetic interference and electromagnetic compatibility characteristics of common circuit, the interference test of rectifier and inverter system, puts forward the products it has produced inhibition method of interference. The test results show that the method can reduce electromagnetic interference system greatly.

The cyclic oxidation behavior of Co-10Cr-5Al alloys in atmosphere at 700 °C was investigated. The addition of 0.3 at.% Y changed the oxidation behavior from the approximate parabolic rate law to complex mode. The scale grown on the surface of Co-10Cr-5Al cracked seriously, while the oxide scale the Y doped alloy had better adhesive property. Yttrium doped in the sample promoted the forming of continuous Al2O3layer and decreased the oxidation rate of Co-10Cr-5Al alloys.

The cyclic oxidation behavior of Co-10Cr-5Si alloys with and without Y in atmosphere at 700 °C was investigated. The addition of 0.3 at.% Y decreased the average parabolic rate constant from 4.39×10-10g2cm-2s-1to 3.42×10-10g2cm-2s-1. The surface components with and without Y were both composed of an outer CoO and inner protective SiO2. There were more SiO2formed when Y doped into the alloy. The addition of 0.3 at.% Y improved the cyclic oxidation resistance of the Co-10Cr-5Al alloy.

On account of the design method shortcomings of cold recycled (CR) mixture with emulsified asphalt,the material compatibility problems between emulsifier and asphalt and RAP were researched,by which the key indicators of emulsified asphalt and the emulsifying effect of different kinds of emulsifier for asphalt is concluded, and summarizes the basic principles of special emulsified asphalt selection for the high-performance CR technology. On the basis of the research at home and abroad, the early strength evaluation methods and indicators are also discussed in this paper that puts forward to three kinds of test methods: cohesive test, raving loss test, coreability test.Finally,the evaluation method was verified in practical project and reached the effect to be hoped.

Grid Workflow Language Yu wan jun1,2, Liu Yunxiang1,2, Fang Hua1,21 Shanghai institute of technology, School of computer science and information engineering, Shanghai, 201418, China 2Shanghai institute of technology, research center of machine olfaction, Shanghai, 201418, China Key words:Intelligant System; Grid Workflow; Activity; Parallel Structure; Abstract:Grids specification is one of the imporant contents in grid workflow fields, it can shield details of underling grid, so users can concentrate on the description of Grid applications. AGWL(Abstract Grid Workflow Language) is an abstract language based on XML, it was always used to describe grid workflow. The basic activities are connected by the control flow and data link. AGWL uses advanced control flow to support the parallel execution of conditions and loops. As an example, we finally introduced a sales process to show the capacity of the grid workflow language AGWL.

A template technology has been applied to the platform of machine olfaction. The simulation sensor array template receives field odor data or simulates the data via recorders in database, and transmits to the platform. The platform consists of several distributed monitoring subsystems based on the simulation template. Each subsystem matches a set of gas sensors array, and has functions of logging data, communicating and simulating industry application. The data from the subsystem and the preprocessed data are sent to the web server center and stored in the databases. The data has been collected, and sensor performance analyzing are performed by several layer algorithms. While the exchanging algorithms convert the field odor data to gas concentrations with ppm values, the expert systems or recognition algorithms analyze the ppm values and show the application results. All data of each layer are stored in server database systems, and each layer algorithms can been updated and saved. Finally, the supporting platform that applied to industrial monitoring systems, was developed with a kind of industrial configuration softwares, web MIS and databases, and was utilized to realize monitor to the environmental systems by the simulation template.

The construction of Electronic Nose system and associated signal processing methods were introduced .Then special references to applications to dairy products, such as the classification of different milk, the milk with different shelf-lives, flavor quality evaluation, antibiotics resedues detection and quality control were discussed. The results show that the quality of dairy products can be evaluated effectively using Electronic Nose system. The development trends of Electronic Nose are presented.

In this paper, an air quality monitoring system based on sensor array and framework of cloud computing is implemented. This system can surveil and report the information gathered from the ambient air condition in real time and inexpensive way, it can protect the public's right to know about the environmental security that everyone living in. All efforts and works of this paper is to turn the dreams into reality: to preserve and improve the quality of our living environment's air, in the sense of keep the damage to our health far away, through the strong pressure of public opinion.

Electronic nose is an intelligent sensory analyzing instrument which simulates the biological olfaction system. Classification is very important for an electronic nose which is usually seen as the software of E-nose. In this paper, we present a model of classification based on genetic algorithm. Compared with common classification algorithms, genetic algorithm had more powerful flexibility and global searching capability. In this paper classification rules were represented in the form of chromosome by binary codes which are in accordance with the features of sensor data. F-measure was used as fitness evaluation. We also designed efficient crossover, mutation operators.

Vehicular environment with the fast varying and fast moving character calls for the support of security communication technologies. The solutions based on watermark and VPN (Virtual Private Network) are discussed to realize security communication of DSRC (Dedicated Short Range Communication), which is earmarked for motor vehicles to exchange information with each other in the area of ITS (Intelligent Transport System).Finally this paper analyses the characteristics of the solutions.

The Research of fire occurrence and the law of development, and the prediction of the risk are the key to prevent and extinguish the fire effectively. This paper uses FDS to build the building model and track the production and movement of fire and smoke, combined with the material properties of furniture, walls, floors and ceiling to calculate the growth and spread of fire. Finally, write the data analysis platform FireSim to read and analyze the output data of FDS, and give the fire danger rating, so as to help people prevent fire and reduce disaster.

By using particle flow code (PFC2D), influence mechanism of isolation layer to granular media flow was studied by simulating two ore-drawing modes of filling mining method (working condition Ⅰ) and synchronous filling shrinkage method(working condition Ⅱ). After analyzed simulation results, some laws were gotten: (1) by the fitting process conducted on released volume and height, it is found that the relationship of released volume and height was power equation, which is same as the stochastic medium theory for ore-drawing; (2) The released volume, the size in most width of loosing body and the location of working condition Ⅱ was both bigger than those of working condition Ⅰ; (3) the radius of curvature of drawn-funnel of working conditionⅡ was bigger than those of working conditionⅠ, but the volume of residual ore was opposite. Analysis shows that the isolation layer reduced the contact force in ore drawing regional, made the porosity bigger, so as to improve liquidity. The results provide a theoretical reference for the changes in underground mining techniques and ore-drawing control.

With a uniform linear antenna array, a new direction-of-arrival (DOA) estimation method is proposed for wideband coherent signals in the presence of unknown correlated noise but with structured covariance matrix. Based on this proposed structure, i.e. Hermitian Toeplitz, a spatial differencing operation that exploits this symmetry is applied to remove the effect of the unknown noise and a new matrix is constructed accordingly at each frequency bin. Following this step, a focusing operation is performed to give the corresponding aligned covariance matrix. Finally, an eigenstructure-based DOA estimation method is applied. The validity of the method is supported by numerical simulation under various conditions.

In traditional traffic signal coordination control, all intersections are shared a common cycle and have fixed offsets in one sub-area. The range of sub-area is normally fixed, plan switching is difficult, and the reaction to the traffic problem is slow. In this paper, a self-organized dynamic control strategy is proposed. it decomposes the network optimization into overlapped and interactive problems between Basic Coordination Units (BCU). It presents an interaction-forecast model among intersections, each intersection not only considers its own benefit, but also takes downstream intersections into account. Multi-scenarios simulation shows it works well in all saturation degrees, reduces total delay around 8% to 12.3%.

This paper puts forward pseudo-response spectrum method for calculating the dynamic response of structure caused by harmonic load on the floor, and proposes to use frequency ratio as a new modal truncation index. Combined with engineering practice, the analysis results of pseudo-response spectrum method were compared with the results of existing dynamic coefficient method and elastic time-history method. The contrast results show that dynamic coefficient method due to lacking of considering dynamic properties enough was not able to meet the real response and could not evaluate the comfort of the vibration. The results of pseudo-response spectrum method with suitable mode combination method have the same law of the maximum enveloping value as elastic time-history method. This proved that pseudo-response spectrum method is reasonable, safe and economical, which can provide the basis for engineering design.

Markowitz mean-variance model was the first applied to study rural infrastructure investment and a rural infrastructure optimal portfolio was established to find the optimal investment proportion of rural infrastructures with maximum total return. Fuzzy mathematical method was used to model solution for the fuzziness of rural infrastructure return and rural Shaanxi was taken as an application tested the feasibility of the model.

Painting is one of the most important processes in decorating industrial product. But the vacuum container is the key of vacuum painting equipment. This paper analyzes the principle of dismountable vacuum container’s structure and establishes its basic physical model and simulates its environment load by the finite element software, then analyzes the important component and obtains the index of reliability and safety of dismountable vacuum container. According to the classic theory of elastic thin plate, the accuracy of the results of finite element analysis is proved. Then the further optimization design and the further finite element analysis are utilized to optimize the important component of vacuum container, finally the results meet the requirements.

Viscous dampers are widely used in vibration energy dissipation project. The researches on viscous dampers used in energy dissipation project at present are more, and one of the main research contents is about how to improve energy dissipation efficiency. In the current study, the effect of the supporting stiffness in dampers is neglected, and only its strength and stiffness is verified. Based on the research on the principle and mechanical model of viscous damper, the influence of supporting stiffness on various energy dissipation working parameters has been analyzed in this paper. The results showed that, supporting stiffness has great influence on the energy dissipation efficiency, then with energy dissipation efficiency as the index, this paper derived the generality support stiffness design formula for energy consumption optimizing, which provide scientific basis for similar design.

Influence of air humidity on thermal performance of armored vehicle is presented in this paper. Data is processed according to the experiment for research in performance of radiator and the heat, which exchanged in the radiator under conditions of different air flow, is calculated abstractly based on the data. Educed from contrast and analysis of the results, the heat exchanged in the radiator increases along with the increase of air humidity, however, the increase is tiny which is below 3.5%. The actual heat exchanged in the radiator can be predicted through the way of abstract calculation used in this paper.

Service Learning is a teaching and learning strategy that integrates community service with academic instruction and reflection to enrich students further understanding of course content, meet genuine community needs, develop career-related skills, and become responsible citizens. This study focuses on a case study of service Learning through Information technology in college of China to improve students’comprehensive ability and inspire innovation ability. The study takes the qualitative research to probe into the practical feasibility and effectiveness of service learning by IT

In order to solve a baffling problem of kinematic chain isomorphism identification, proceeded from the isomorphism’s principles of graph theory, a new method for detecting isomorphism among planar kinematic chains using the standardization adjacent matrix is presented in this paper. The general course of adjacent matrix standardization processing and numbering principle of node are introduced, the implementation of this new method is illustrated with an example, it is showed that this new method can be accurately and effectively performed.