Advanced Materials Research Vols. 468-471

Abstract: TOT project financing structure includes Renshi structure Wushi structure and Lishi structure [1]. Based on the qualitative analysis separately of the three structures, the article built the factor analysis framework for the three structures by the method of fuzzy entropy. The article will lay the foundation for further research on integration of the three structures.

Abstract: Major objectives of this study are to evaluation the enrichment, accumulation, and potential ecological risk of lead (Pb) in the sediments of Love River mouth, Taiwan. Ten monitoring stations were installed near the mouth of Love River to collect sediment samples for analyzing Pb. Results of laboratory analyses show that concentrations of Pb in the sediments are between 44 and 105 mg/kg with an average of 74±19 mg/kg. The spatial distribution of Pb reveals that the Pb concentration is relatively high in the river mouth region, and gradually diminishes toward the harbor region. This indicates that upstream industrial and municipal wastewater discharges along the river bank are major sources of pollution. Results from the enrichment factor (EF) analysis imply that the sediments can be characterized as moderately severe to severe degree of Pb enrichment. Results of geo-accumulation index (Igeo) analysis indicate that the sediments can be characterized as moderate to moderately strong degree of Pb accumulation. However, results of potential ecological risk index indicate that the sedimentation at Love River mouth has the low ecological potential risk.

Abstract: Y₂O₃ dispersion strengthened iron-base powders were prepared by hydrothermal synthesis. Effects of surfactants on the size and distribution of Y₂O₃ dispersion phase were investigated. The structural and morphological properties were investigated by XRD and SEM. The results show that PVA is an effective addition for refinement and spheroidization of Y₂O₃. By adding 1 wt. % PVA, Y₂O₃ with size of 50nm and uniform distribution were achieved.

Abstract: This paper aims to use China as the research sample to investigate the relationship among economic growth and financial development. Degrees of financial development, financial efficiency, financial structure and financial freedom will be used to reflect China’s financial development. The empirical results show the financial development has no significant influence on China’s economic growth.

Abstract: Abstract Sacrificial anode cathodic protection is one of the most widely used methods in protecting buried oil pipe lines against the corrosion damages. In the present work, a series of Aluminum alloys have been prepared as sacrificial anodes candidates to be used in the protection of the oil pipelines that pass through the Al-Mahawil region. These prepared alloys were microstructurally and electrochemically characterized to evaluate their performance as Al-sacrificial anodes for cathodic protection of oil pipes The relationships between the protection potential with time, sacrificial anode life, discharge currents, and capacity of sacrificial anodes were found, taking into consideration the distance between sacrificial anode and protected steel sample. According to the results obtained, the best selection of sacrificial anodes was Al-4% Zn-0.4% Sn) alloy at 30cm in Al-Mahawil region.

Abstract: This essay has chosen 568 companies listed in Shenzhen Stock Exchange (SZSE) as research samples. And it empirically analyzed the independent director system' effectiveness on the corporate performance. The result indicates that the proportion of independent directors is not significantly correlated with corporate performance, and that the independent directors' compensation is significantly positively correlated with the company’s performance and that the meeting attendance of independent directors is not significantly positively correlated with firm’s performance. At last, two proposals are put forward: firstly, broaden the company information's delivery channels to independent directorst; secondly, perfect the incentive and constraint mechanism of independent directors

Abstract: Chlorophyll content is an important indicator for assessing crop health and predicting crop yield. It is possible that chlorophyll content (CC) was quickly and non-destructively estimated by remote sensing. The objective of the experiment was to develop precision agricultural practices for predicting CC of wheat. In this study, we compared some spectral parameters (SPs) and CC with the determination coefficient (R2), and combined these SPs by stepwise regression methods. The results indicated that the 1.45SIPI-1.05PSRI, the R2 value was 0.6589 and corresponding the root mean square error (RMSE) was 1.463, and it can be used to improve the prediction accuracy of CC.

Abstract: A mobile robot based on embedded system can meet the requirement of low energy cost and miniaturization. An embedded system for moving target tracking is designed in this paper. By combining with wavelet transmission, an improved algorithm of particle filter with wavelet particles is proposed for tracking maneuver target, and then a scheme of optimization is also proposed to enhance the real-time property of the system. Experimental results show that the system can be suitable for real-time target tracking applications.

Abstract: A new automatic calibration system for electronic scale with image identification is developed. The system is composed with mechanical part, pneumatic components, PLC, USB camera and computer. Labview is the developing platform with user interface, PLC is controlled by Labview via OPC configuration to load or unload the standard weights, image machine vision technology is used to automatic recognize the LED char displayed on electronic scale.

Abstract: Passive methods are costly and ineffective in noise reduction at low frequencies. Active noise control has been suggested because of these problems. Active noise control (ANC) is based on the destructive interference between the noise source waves and a controlled secondary source. In this paper, various training algorithms are compared in active cancellation of modeled sound noise using MLP neural network. Colored noise signals are used as a model of sound noise instead of noise signals from databases. An MLP neural network with different architectures is used in simulation procedure. The effect of number of neurons on the convergence speed of various training algorithms is investigated in this paper. Levenberg-Marquardt (LM), scaled conjugate gradient (SCG), BFGS quasi-Newton (BFG), resilient back-propagation (RP) and variable learning rate back-propagation (GDX) are used for training the network. Simulation results show that Levenberg-Marquardt (LM) and scaled conjugate gradient (SCG) are the fastest training algorithms.