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According to the geometric meaning of the structural reliability index, an unconstrained optimization model with structural reliability index and design point is obtained by exterior penalty function method. The Powell method, golden section method and extrapolation method are used to solve the unconstrained optimization problem. The proposed method not has to deal with the any derivative of the limited state function, and can been used to obtain structural reliability index and design point of the strong nonlinear limit state function, which first-order reliability method (FORM) may fail to converge. Three examples are given to compare penalty function method with the difference methods. The results show that the given method is simply, effective and precise enough.

This paper analyzes the effect of stable behaviors when amplitude, phase of sine voltage compensation signal are added in the system, reveals that the dynamical behaviors mechanism that sine voltage compensation signal changes feedback voltage-mode controlled buck converter lies in changing the duty cycle without impacting the system stable error via analyzing the change of period multiplier in Monodromy matrix and conditions of period bifurcation, and finally achieves stabilization control for bifurcation and chaotic behaviors. The simulation and experimental results prove the correctness of the theoretical analysis.

With the continuous development of human society, sustainable resources has become an important issue of concern, and good resource management is an important assurance for sustainable resources. In this paper, we proposed an integrated framework base on ExtJS and SSH. SSH provides a weak coupling, easily maintainable, lightweight J2EE software development model, which can be used to build high-quality Web applications. The proposed framework can be used to build a flexible, easily extended and maintainable multi-layer Web application platforms. We developed an equipments resources management support system based on the proposed framework, and experimental results show that the efficiency of equipment resources management could be improved through using the developed management support system.

In this study, a new kind of photocatalysts was prepared by titanium dioxide, sodium dodecyl sulfate and copper. It was used to improve the biodegradability of textile wastewater under solar light. The effect of light intensity, dissolved oxygen and wastewater hydraulic remain time on the biodegradability improvement were researched. Experiments show that when the light intensity, DO and HRT are 2.1mW/cm2, 2.37mg/L and 3h, respectively, the B/C value of textile wastewater increases from 0.11 to 0.37, and DHA value increases from 3.72TF/(ml·h) to 22.68μgTF/(ml·h). Photocatalysis reactor combined with sequencing batch reactor was used to further treat textile wastewater. The results show that COD and BOD5 decline to 71mg/L and 18mg/L, respectively.

The natural restoration capability of vegetation along the expressway is of vital importance for the slope revegetation and maintenance. The Margalef 's richness indexes (DMA), Shannon-Wiener's diversity index (Hp), Pielou's evenness (Jsw), Simpson Index (C), Importance Value Index (IVtr), Vegetation coverage and soil seed bank were used to assess the vegetation restoration capability of the expressway 25, Lu-Su section in China. Seventy-four quadrats ranged from 1 m X 1 m to 20 m X 20 m were studied and the analytical results indicated that Digitaria sanguinalis, Setariaviridis and Gramineae are the dominant species in the expressway slopes. Texture is the most important factor influencing the α diversity and vegetation coverage. Cinnamon soil is more suitable for the restoration compared with slopes the other kind of texture. The land use type and alien species invasion along the expressway are also vital important for the natural restoration. The soil seed bank in filling slope is more abundant than that of excavation slope. The natural restoration of vegetation along the expressway varies according to the site types and land use and most of the slopes have strong recovery ability.

Coordination has been regarded as a critical factor of successful projects. Because construction projects are highly fragmented with many participants involved at different construction stages, coordination is more complicated for contractors. A coordination systems and procedure developed by simulating circulatory system could improve coordination effectiveness of construction projects due to the natural and effective physiological functions of the human body. To verify the applicability and effectiveness of the system and procedure, two tools to quantify coordination needs and supply were proposed and a case project was tested for ten months. The results showed that the more fit between coordination needs and supply, the better the task performance, meaning that the coordination system and procedure is effective. During construction the contractor can follow the coordination procedure and assign an engineer to evaluate variation of coordination needs and supply periodically or at emergent conditions. As coordination supply does not meet needs, time and frequency of coordination methods should be adjusted.