Advanced Materials Research Vols. 171-172

Abstract: In this dissertation, the internal field of a laboratory of desert environment simulation was studied and analyzed. According to the sizes of the axial-fans and the laboratory, the numerical models of the fans and the laboratory were built with CAD and GAMBIT. The numerical simulation was carried out with commercial CFD software-Fluent and the k-ε model was established to research this project. The variation effect of the height of the solar simulator and the opening with exhaust hood on the flow field was also investigated. And the demand of different velocity outlet conditions could be met by changing fan rotational speed. From the results of the simulation and the experiment, it is shown that the method of numerical simulation coupling fan and laboratory model was feasible to the simulation of the laboratory.

Abstract: To promote international industrial subcontracting in China, this paper introduced the advanced information network technologies of international industrial subcontracting (SPX), and presented an information support system for china union of international industrial subcontracting (CSPX). The functions of the support system include technical information search, information retrieval, information dissemination, information exchange etc. In order to promote the service function of SPX and role in promoting enterprise development, we analyze the integration need of SPX system and other information systems and given and present an approach to realize the enterprise application integration between all these information systems.

Abstract: This paper analyzed the principles of learning and associative memoryof artificial neural network, while combining with component-based software engineering (CBSE) development ideas, and designed dynamic data query component. To Innovatively and effectively combinate neural network (Instar rule) with the data query concretely. Dynamic data query components mainly consist of five group elements, in addition to system interface group element as a characteristic group element, the other as functional group elements. Under control flow, around the user's service request to analyze data profiling and query information feedback. In addition, dynamic data query component of internal work processes is briefly described. The design will be of practical value for the database management system.

Abstract: The artificial intelligence is an important branch of computer science, in recent years with the development of computer technology, artificial intelligence has also been in good development. Machine learning is a core part of artificial intelligence, machine learning background, research status, and applications in network intrusion detection, text categorization and data mining were studied in this paper.

Abstract: Behavior of traders including investors and speculators in commodity future markets are studied before and after the subprime mortgage crisis. We put our attention on quantity of traders hold positions instead of price volatility or capital return rate of commodity future markets. By standardize correlation coefficients of net positions we try to quantify the impact of speculative funds on behalf of international hot money in international commodity futures markets in the subprime mortgage crisis. Parametric and non-parametric tests are used in this paper. The empirical results reveal that investment directions of speculators do change in crisis and they connect more tightly with markets compared with investors for that their find more opportunities and higher return rate during the Subprime mortgage crisis.

Abstract: In this paper, a spherical robot with an internal mechanism for propulsion is briefly introduced. The spherical robot is actuated and steered through a couter-weight pendulum connected to the main axle, a drived motor and a steer motor. A mathematical model of the robot’s dynamic and motion is instructed. The 3D model of the robot is built by SOLIDWORKS and then exported to ADAMS for simulation. For a number of missions, it is shown experimentally that the model agrees well with the results.

Abstract: In the investigation of the universities counselor’s contradiction and bepuzzlement in work and competence, this paper obtain the following results by sample survey of counselors and statistical analysis of profession and competence. Counselors own identity on their career will affect the counselor’s ability. The awareness of the importance of counselor’s ability is by the impact of different occupations. And the difference of this understanding in turn will affect the career development of counselors. The development law of the universities counselor’s profession and competence is explored. According to the analysis and the research, a scientific evaluation system for counselor’s ability is established, which is consistent with the needs of counselors, and is the key to building professionalism for the counselors.

Abstract: Congestion is an important issue in the research of end-to-end congestion control. The congestion issue in transmission with TCP is studied. Under the situation of different round trip time and multiple congested gateways, ECC (Explicit Congestion Control) algorithm is proposed to solve the congestion problem of TCP. The basic idea is to explicitly improve Congestion by adding mechanism at both end systems and gateways. Then study the tile congestion of Internet data transmission. Internet data transmission relies on end system mechanisms to keep Congestion. As the number of the users has been very large, this scheme has become vulnerable. It is required to deploy some congestion mechanism at gateways.

Abstract: Public policy implementation problem is a kind of common phenomenon. It needs to consider the influence of the correlation factors in order to analyze the obstacle factors of policy implementation. The policy implementation is the very important link and extremely complexly in the process of the policy implementation. It is very significant to analyze the factors in the process of policy implementation, it can help us to understand the public decision-making. In the current, there are many problems in local government public policy implementation, those problems have affected the implementation of national public policy and the healthy development of society, Through the research of the northeast local governments public policy implementation ability, several suggestions can be given in order to enhance the implementation ability.

Abstract: Seismic Synchronous acquisition means the Field Digitizer Unit acquiring data of each geophone at the same time. Here we will present a method to realize synchronous data acquisition of which the synchronous process is finished at FDU. A timer will be used to precisely measure the time difference between data transmission in positive direction and that in negative direction. And then work out the delayed time needed by each FDU. In that way, when receiving the command to acquire data synchronously again, the delay time control AD transformation can be well dealt with, so as to realize the purpose of synchronous resetting and acquisition. Through hardware circuit test, the two power stations have 15 FDU and each station is 25m or 50m apart, Accuracy of synchronization at each acquisition station reach 200ns. Besides, this method can be used for reference for technology of synchronization of other serial acquisition systems.