Advanced Materials Research Vol. 459

Abstract: Gold nanocaps were prepared by vacuum depositing gold films onto self-assembled monolayers of SiO₂ nanoparticles, and characterized using SEM, AFM and XRD. Its antibacterial activity was investigated. It was found that gold films with cubic structure have completely covered self-assembled monolayers of SiO₂ nanoparticles. The gold nanocap, comprising of 20 nm gold film and 450 nm SiO₂ nanoparticles, possesses high antibacterial activity.

Abstract: The paper proposes an approach for setting the size of project buffer based on the theory of unascertained rational numbers and critical chain management. This method applies the optimistic time into programming schedule plan and using the addition operation of unascertained rational numbers to obtain the unascertained schedule plan, to finish and generate cumulative reliability. This technique is applied to calculate the buffer time by using the optimistic construction period and total project period when finishing reliability is 90%. This feasibility of the model has been proved by an example

Abstract: In this paper, the rateless codes aided multi-hop systems with receiver imperfections including phase error, quadrature error, and I-Q gain mismatch is proposed. The bit error rate (BER) and the symbol error rate (SER) performance of the proposed systems over Rician fading channels are studied. Taken dual-hop transmission as a special case, the validity of the proposed system is substantiated by simulation results.

Abstract: This paper contributes to examine the determinants of consumers’ post-adoption purchase intention with an integrated theoretical model proposed by our study. Data collected from a questionnaire survey of group buying consumers provides empirical support for that model. The results indicate that consumers’ satisfaction with prior use and perceived usefulness significantly influence consumers’ continuance intention. Consumers’ satisfaction is determined primarily by consumers' confirmation of expectation and secondarily by perceived e-recovery service quality. Further, confirmation also has a significant influence on post-adoption perceived usefulness

Abstract: This paper proposed a de-trend method for vibration signal of telemetry based on the empirical mode decomposition (EMD) by correlation coefficient matrix. The signal is decomposed to a series of intrinsic mode component and the remainder item by EMD. It mainly distinguishes between the remainder item and the signal trend, according to the correlation coefficient matrix to determine whether some intrinsic mode component belongs to the trend item or not. The results show that signal trends can be extracted accurately through the effective combination EMD with correlation coefficient matrix and the proposed method has good applicability for different signals and different trends.

Abstract: Knowledge is an important resource providing competitive strategies for the firms. Managing knowledge through supply chain will bring more benefits to the businesses. Various factors during the process of knowledge flowing can cause different time delay. In order to analyze the problem of time delay of knowledge flow in supply chain, the knowledge flow model in supply chain based on stochastic Petri net is proposed and corresponding isomorphic Markov chain is given. The time performance and the efficiency of knowledge flow Petri net model are discussed. The proposed method can help the firm with the knowledge flow management and reorganization

Abstract: Kinematic viscosity is one of the important indexes for the fluid petroleum products, and the determination of which has important and practical significance for the petroleum produces. This article gives a brief introduction for the instruments and reagents to determine the petroleum products. During the process to determine the kinematic viscosity of petroleum products; the choosing, using and setting position of capillary viscometer and the mercury thermometer will greatly influence the determination of the kinematic viscosity. And the article analyzes these effects and stressed the matters of attention.

Abstract: Removing interferential noise of ground-penetrating radar(GPR) from the echo signal can accurately get the information of underground targets. Raw data reading is a critical step for GPR signal processing. In this paper, the data structure of RIS-K2 is analyzed. Some C++ programs have been written to read the raw data of GPR and the sampling points in form of decimal data are obtained. Then, the data are analyzed and processed with wavelet algorithm in MATLAB. The results show that the noise of the echo can be effectively removed with wavelet denoising method, and it is helpful to determine the underground targets accurately

Abstract: Applying Artificial Intelligence technology on mold design can help realize the design automation of mold. Because knowledge-based engineering is an effective intelligent design method, the paper systematically introduced the application and development of knowledge representation, knowledge reasoning, knowledge acquisition and other key technologies of knowledge engineering technology used in mold design field. Finally, the development tendency of mold design based on artificial intelligence was analyzed in detail

Abstract: Nano-material has many unique functions and sports field provides the platform for displaying its excellent function. This paper summarizes the application of nano-material in the construction of sports venue.The main purpose is to provide the certain reference for further application in the sports field in the future.