摘要：
It is less reported about highway bridge’s dynamic reliability research. Basing on the observation of the actual vehicle distribution, author has solved an old highway bridge’s dynamic reliability problem by self-designed program which based on the first excess mechanism by parametrical analysis. From the analysis that dynamic reliability of the old bridge was low due to cracks, so It need to be strengthened and maintained. At the same time, the author also draw some conclusions. The study method and results can provide reference for subsequent researches.
摘要：
Based on all the factors method, the PB was treated in dry oven in order to find the way to improve the mechanical properties of the PB. The results indicated that The temperature has a significant effect on the MOR, MOE and IB of the PB. And the time has a weakly effect on the IB, MOR and MOE of the PB. So ground heating could improve the mechanical properties of the PB.
摘要：
Paper presents a method for color image compression coding by using correlation vectors combined with SPIHT Algorithm. In this method, the Green component of a color image is coded using SPIHT Algorithm, and the other two components are segmented into multi-subregions by quadtree partitioning according to the non-correlation degree of three color components. Based on the calculated correlation vectors between three components in the same subregion, the coding for the other two components becomes the coding of correlation vectors. Experiment results show that this method is of high coding and decoding rates, and with quite good signal to noise ratio, compression rate and visual quality.
摘要：
Usually it is very difficult to get an analytical equation of limit state for reliability analysis of the existing bridge. Therefore, the paper puts forward a geometric analysis method of reliability analysis based on Neural Network - Response Surface. The method calculates the index beta of reliability by using finite element numerical simulation, and has important implications for the reliability analysis of large and complex structures which can not to get an analytical equation of limit state. The numerical experiment shows that the neural network model can well fit the true limit state function and the method based on Neural Network - Response Surface has broad application prospects in the reliability analysis of existing bridges.
摘要：
Tunnel surrounding rock is a complicated comprehensive system, various parameters have the very big indetermination, and therefore, the reasonable obtainment of its mechanics parameters is the important factor for promoting the development of tunnel engineering. Based on BP neural network, combined with the actual project, two monitoring cross-sections are set at side-expanding section to monitor the deep displacement of surrounding rocks, and acquires the numerical data for arch crown settlement and the horizontal convergence of the tunnel inner perimeter resulted from one-sided excavation. The BP model of artificial neural network is used for back-analyzing the mechanical parameter of the tunnel's surrounding rock. The network has a good simulating capability, and the range of the error all controls within 1%. The result shows that the BP neural network can be used for simulation network of back analysis on rock mechanic parameters, which the parameters by back-analyzed are true and believable, it is a good method for back-analysis design on tunnel surrounding rock parameters, and provides some engineering application value.
摘要：
E-government, a product of information technology, is considered as the core projects in the building of information superhighway, and is chosen as preferred solution to improve administrative efficiency and low administrative costs. Therefore, it is becoming a pressing issue to develop an e-government platform with high efficiency and good performance. In combination with the developed e-government platform in China, a noval e-government platform based on both B/S architecture and performance evaluation was constructed in this paper, and the construction of noval platform will provide some references for the highly efficient and healthy development of e-government in China.
期刊：
PROCEEDINGS OF THE 4TH INTERNATIONAL CONFERENCE ON PRODUCT INNOVATION MANAGEMENT, VOLS I AND II,2009年:121-127
作者机构：
[Chen Xingyan; Tao Tao; Xiang Shilong] Cent S Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Peoples R China.
会议名称：
4th International Conference on Productinnovation Management(第四届产品创新管理国际会议)
会议时间：
2009-08-22
会议地点：
武汉
会议论文集名称：
4th International Conference on Productinnovation Management(第四届产品创新管理国际会议)论文集
关键词：
production management;throughput;bottleneck;furniture industry
摘要：
According to the problem which China's furniture manufacturing industry is facing, the paper mainly analyses the management ways and strategies .At the same time, in order to realize furniture industry development at higher level, higher quality, the paper proposes that making full use of inherent simplicity of the system can achieve breakthroughs in the shortest possible time with a minimum of resources. For furniture manufacturing industry, making efforts to increase throughput, reducing inventory, shortening production cycle and strengthening the quality management are the direction of the future.
摘要：
In order to overcome the above-mentioned negative effects, the fresh Chinese-fir shavings were extracted in KOH soltion, were analyzed by ZETA and SIZER to find out the leaching rule of nano particles in Chinese-fir wood. The results are as follows: (1) The extraction mass arrived at the maximum value when KOH concentration is about 17.5％. The micro/nano particles in Chinese-fir shavings would be discharged sufficiently in the KOH solution with the increaing of extracting time.(2) The diameter the micro/nano particles of wood extractives and hemicellulose is comparatively scattered according to volume fraction. Micro/nano particles in the diameter of 91.3-342 nm, 91.3-342 nm, 342-1720 nm is the most at the extracting time of 3h, 16h, 24h, respectively (3)The diameter the micro/nano particles of wood extractives and hemicellulose is chiefly between 342nm and 6440 nm according to number fraction.Micro/nano particles in the diameter of 91.3-342nm, 91.3-342nm, 91.3-342nm is the most at the extracting time of 3h, 16h, 24h, respectively.
摘要：
Chitosan, derived from chitin by partial N-deacetylation, has been found to be non-toxic, biocompatible and biodegrable. So chitosan has high economic value and environmental impact. The study mainly compared the antifungal activities with two types of chitosan (W-CS, I-CS). The results indicated that W-CS and I-CS had high antifungal activities against the pathogens caused camellia anthracnose. As W-CS and I-CS concentrations increased from 1 mg-mL<sup>-1</sup> to 10 mg-mL<sup>-1</sup> antifungal went up significantly. The optimal pH range of chitosan for the highest antifungal activity was 5.3 to 6.0 with tartaric and acetic acid as solvent. The recommend treatment of 2.5 mg-mL<sup>-1</sup> W-CS+1%HAC had the inhibition rate of 72.6%, which had almost 500 times effectives than that of thiophanate. Our results should help to develop for a new type of environmental friendly pesticide.
