Advanced Materials Research Vol. 629

Abstract: Torque is the most important dynamic characteristics of the mechanically-driven system. In order to monitor the mechanical principal axis in real time, a new non-contact torque measurement system based on ring-space array sensor is proposed. This system can be used for the analysis of dynamic characteristics of the mechanical system’s axis under various loads and hard working environments. Singularity in the collected signals is most important with the mechanical system. Because of much noise was contained in collected signals, which always interferes the signal’s singularity detection. According to the different behaves of signal and noise under wavelet transform, a method with wavelet filtering and singularity detection combined is proposed. This method could realize two-dimension filtering reconstruction in both time and frequency domain, in which the singularity information in signal can be kept well while the noise will be filtered. The proposed method is suitable for singularity detection of signals under serious noise.

Abstract: Modern technological innovation model of furniture enterprises mainly includes imitative innovation model, cooperative innovation model and independent innovation model. Furniture enterprises face a variety of technological innovation uncertainties, with the uncertainty management and risk management technology, innovators are able to recognize the uncertainties of technological innovation to achieve the transformation from the probability of unknown uncertainty to the probability of known uncertainty, as well as the transformation from uncertainty to certainty, this is beneficial to the furniture enterprises to improve the efficiency of technological innovation and the implementation of the innovation strategy.

Abstract: The reliability analysis and optimization of laminates containing probabilistic uncertain variables and non-probabilistic bounded uncertain variables is conducted in the present paper. Convex method is utilized to deal with non-probabilistic bounded uncertain variables. The reliability index and index range of a four sides simply supported laminate are optimized for numerical examples. The results indicate that considering the non-probabilistic uncertainty variables can get more conservative results, and the larger the uncertainty range of non-probabilistic bounded uncertain variables is, the more conservative optimization result is.

Abstract: In this paper, we study the complexity metrics for systematically generated assembly supply chains structures. We define three structural complexity indicators, such as the index of vertex degree, the supply chain length and the flow complexity. By a comparative study of 190 mathematically selected supply chain networks, we obtained Spearman correlation coefficients among three defined metrics and find some interesting results.

Abstract: This study is a broadly review on the literatures from science citation index expanded (SCI-EXPANED) database, concerning topic research with semantic. The result indicates that the number of literature productions on this topic reaches climax of 4 in publication year 2012 and then followed by 2011 and 2007 of three papers respectively. The main research development country is China, and from the analysis of document type, articles accounts for 80%. Computer science acts as the main source title of this research. In general, the related research can be classified into application research and theory research. Multimedia, electronic document and general application are explored in application field, meanwhile text analysis, passage segmentation and semantic clustering are the main topics in theory research.

Abstract: The purpose of this study is to review on keyphrase extraction research from science citation index expanded (SCI-EXPANED) database on web of science. The result indicates that the number of literature productions on this topic mainly distributes in recent 10 years, reaching climax in 2005 and then followed by 2010. The primary research development country is China. From the analysis result of document type, proceedings paper accounts for 50%. In general, the related research topics can be classified into keyphrase extraction for oriental language documents, English documents and bilingual documents. Hebrew documents and Chinese documents as oriental language documents have been the main objects for keyphrase extraction. Meanwhile keyphrase extraction for bilingual documents has been stressed on English and Arabic documents. Meanwhile recommendation is the focus for keyphrase extraction in English documents.

Abstract: This paper took a set of published colon cancer gene expression profiles for example, to show how to establish a gene expression regulation network with logic relationships. The research improved the original algorithm with supported value, then deciphered and confirmed some nonlinear genes functions. This work also provided valuable reference and guidance for biologists to understand and explain some genes function in pathological changes. Gene logic networks have significant meanings for researching gene functions within cells.

Abstract: Railway siding for transport of hazardous materials is an important way in transporting of hazardous materials in China and they often result in catastrophic consequences for environment and society with a great deal of economic loss. Risk assessment for railway siding is an effective way to ensure its operational safety. This paper focuses on the application of self-organizing neural network (SOMNN) to assess the risk of the railway siding operational system and classify its risk factors. In this work, the system analysis method based on the characteristics of railway siding for hazardous materials is first used to establish the transport risk assessment index system. A comprehensive risk assessment model of railway siding has been developed with the SOMNN theory to improve present methods available for risk assessment of rail siding’s safety. A field case study about 15 railway slides for transporting of oil in Jilin broach center of China National Petroleum Corporation is undertaken so that the effectiveness of the proposed approach could be verified. The result is in line with the actual situation and indicates that this method used is feasible and rational. This model provides a new method for transport risk assessment of hazardous materials by rail. The method is also proved more efficient for both risk assessment and safety management. The work specified in this paper can be as reference to the assessment work in China.

Abstract: This paper presents a new methodology for obtaining singleton fuzzy model from experimental data. Each input variable is partitioned into triangular membership functions so that consecutive fuzzy sets exhibit and specific overlapping of 0.5. The recursive least squares method is employed to adjust the singleton consequences and the gradient descent method is employed to update only the modal value of each triangular membership function to preserve the overlap and reducing the number of parameters to be estimated. Applications to a function approximation problem and to a pattern classification problem are illustrated.

Abstract: In this paper, a abstarct model is build for maze. Integrated maze was divided into many fragments, graphic traversal algorithm was used to classify those fragments into different category. By searching in the category, the wrong way of the maze can be eliminate, and the real way can be find easily.