Applied Mechanics and Materials Vol. 618

Abstract: In this paper, we are devoted to the construction and analysis of research network. Firstly, on the basis of data Erdos1, a co-author network is built and two novel measures are proposed to analyze properties of the co-author network. A data extraction method using string matching technique is developed and the network is visualized using UCINET. Then, the first-order and second-order entropy are defined to depict the complexity of the network, and the node’s invalidity probability and load-bearing capacity are defined to depict the robustness of the network.

Abstract: The assessment of risk of default on credit is important for financial institutions. Logistic regression and discriminant analysis are techniques traditionally used in credit rating for determining likelihood to default based on consumer application and credit reference agency data. We test support vector machines (SVM) against these traditional methods on a large credit card database. We find that they are competitive and can be used as the basis of a feature selection method to discover those features that are most significant in determining risk of default.

Abstract: This paper, after excluding the impact of structural factors, studes the relationship between macroeconomic variables and bank credit risk by using the concept of cointegration time series. It finds that the co-integration between time of loans issuance and economic cycle does not exist. The economic cycle has a significant impact to the level of non-performing loans in point, and the co-integration relationship between the two is obvious. Credit scale has a significant long-run equilibrium relationship with economic cycle.

Abstract: In the era ofthe knowledge economy, the accounting priority has shifted from tangible assets to intangible assets. The knowledge economy-based intangible assets is gradually emerging as the main impetus for determining the forthcoming cash flow and market value. This paper takes the stocks listed in Shenzhen Securities Exchange as the study object, conducts empiricalstudy and analysis based on the sampling data, including 2008-2010 pershare intangible assets,per share returns, per share net assets after deducting intangible assets and share price,describes the disclosure of intangible assets of such listed companies as Jilin Forest Industry,Zhongfu Industrial, Yihua Timber Industry, Fenglin Group and Palm Landscape and inspects the value relevance of intangible assets. Accordingly, this paper proposes to consolidate the value management of intangible assets of the forestry enterprises and improve their core competítíveness.

Abstract: For hourglass worm three-dimensional modeling, in the Process that Using MATLAB software Calculating the Generated * ·ibl files and leading-in Pro /E software comply hourglass worm three-dimensional modeling, MATLAB Calculate Generated Worm spiral curve, Cusp and Broken line appears, when * ·ibl file mixed border leading-in Pro /E software Worm tooth underside appears Distortion, meshing space appearing inverted triangle and other problems, Propose specific methods to improve hourglass worm modeling precision, and using croe software for modeling. The results show that using this method to the modeling can well improved the hourglass worm modeling accuracy.

Abstract: Micro-nanopositioning platform is a core component for micro-nanooperation. The static and dynamic characteristics of platform will determine its precision level. This paper presented a new 2-D micro-nanoplatform based on stick-slip driving. By using static structural module and modal analysis module of ANSYS software, the stress and natural frequency of pedestal were analyzed. The driving frequency of piezoelectric ceramic was selected far away from the natural frequency to avoid resonance. Dynamic performance of pedestal was also analyzed with ANSYS transient module. Simulation results show that the presented platform has excellent static and dynamic performance.

Abstract: The mechanical properties of the sharp end, equator and blunt end of White-duck-eggshell were tested through the compression experiment, and the static load mechanical properties of the eggshell were simulated with finite element analysis method. The results showed that the maximum pressure that the loaded long axis of the eggshell can endure is obviously greater than that of the short axis, and that the maximum pressure that the sharp end can endure is greater than that of the blunt end in the long axis. Furthermore, the same results have been obtained both by finite element analysis (FEA) and experimental study, which can prove the feasibility of the FEA in the analysis of eggshell mechanics properties.

Abstract: Supplier management is an important part of supply chain management, combined with the feature of the power industry, the paper design supplier comprehensive evaluation system of power grid enterprises, and put forward comprehensive green degree into supplier evaluation index system to conform to the national grid company production requirements. Firstly, according to the index system, the analytic hierarchy process evaluation method to draw the initial weights, secondly, the modification of entropy weight method to reduce the subjective factor influence on the evaluation results by AHP , finally, an example is given to demonstrate the feasibility of the evaluation index system for the power grid enterprise, it aslo provides a theoretical basis for decision-makers during the vendor selection.