Applied Mechanics and Materials Vols. 58-60

Abstract: Soft sensing can solve the problem of on-line measuring for some variables which are difficult to measure with common instruments commendably. Chlorophyll-a is an important index of water quality for seawater, which can indicate the state of algae reproduction, further more it can predict the disaster of red tide by prediction model. The content of chlorophyll-a of seawater is affected by many physical-chemical factors, this complex relationship among them is difficult to be described by ordinary mechanism expression. In this paper, we use Fuzzy BP model to describe this complex nonlinear system, and detect the content of chlorophyll-a by the method of soft sensing. The PCA(Principal Component Analysis) method had been used to reduce the dimension of the sample data, simplify the complexity of the model system, this method can make the model has a faster convergence rate and a relative low dimension. The experiment illustrates that the result of soft sensing for algae blooms can match the real changes of the content of chlorophyll-a in seawater basically.

Abstract: This paper proposes a diagnosis method of ball screw preload loss through the Hilbert-Huang Transform (HHT) and Multiscale entropy (MSE) process when machine tool is in operation. Maximum dynamic preload of 2% and 4% ball screws are predesigned, manufactured and conducted experimentally. Vibration signal patterns are examined and revealed by Empirical Mode Decomposition (EMD) with Hilbert Spectrum. Different preload features are extracted and discriminated by using HHT. The irregularity development of ball screw with preload loss is determined and abstracting via MSE based on complexity perception. The experiment results successfully show preload loss can be envisaged by the proposed methodology.

Abstract: The key and prerequisite of realizing the revitalization of old industrial bases are to further deepen the reform of state-owned enterprises and try the best to promote the institutional innovation and the mechanism innovation. The revitalization of old industrial bases is carried out under the condition of reform and opening up as well as the development of socialist market economy. Therefore, it must follow the requirements of new industrialization and make a fuss in the “new”. Deepening the reform, expanding the opening up and promoting the institutional innovation, they are considered as the important symbols for realizing the revitalization of the Northeast Division. It is necessary to actively promote the strategic adjustment of the layout of state-owned economy and speed up the restructuring of key industries. Accelerating the development and achieving the revitalization require us to hold high the banner of reform and opening up and firmly set up the ideas of relying on reform and opening up and market mechanisms to realize the revitalization. Continuing to deepen the reform and expanding the opening up have provided a powerful driving force for revitalizing the old industrial bases.

Abstract: It is very difficult ot process the micro-deep hole, especially the hole made of hard guilder alloy, heat resisting alloy by classical machine method. The E-beam processes which make use of the high energy of e-beam can manufacture lots of micro-deep hole and abnormal shaped hole constituted of hard-transformed materials. The process of high-efficiency and high-definition can be obtained by selecting processing-parameters correctly and reasonably.

Abstract: For achieving better environmental performance of products or product systems, it is essential to manage total product life cycle. This paper describes a method for supporting product life cycle management by comprehensive product life cycle simulation, which is a basis for designing and evaluating total product life cycle. For life cycle evaluation, it is important to seek for the better product services, at the same time to seek for lower environmental burden and life cycle management costing. For this purpose, a product usage model is proposed, where customer satisfaction is measured by offered product functionality. The same level of customer satisfaction can be achieved by various different life cycle management options. By taking examples of technologically immature short-life products, like mobile phones, effect of difference of required product service quality is investigated, and appropriate product management strategy is discussed for improving product service quality.

Abstract: In the concurrent and collaborative product development process, the realization of quantitative analysis and overall control of the development process management is the key and the difficulties in the current study. Through describes the concept and role of data maturity, a new methods to quantitative analysis and overall control of collaborative product development process based on the idea of data maturity was proposed in this paper. Base on the explanation of the theory of data maturity to control the process, the differences and relationship between data maturity and milestone was analyzed. The division method of data maturity level was discussed, and the corresponding relationship between each data maturity level and completion degree of the digital product model was illustrated also. In addition, the overall form of the product collaborative development process based on data maturity was provided. Finally, the detailed process between product structure design, process design and tooling design driven by each data maturity were explored, which realized the quantitative analysis and overall control of the product development process.

Abstract: This study investigated the characteristics of organizational and management factors of safety climate and explored possible important factors on safety self-efficacy and safety practices in steel refinery plants of Taiwan. The safety climate of the company we studied can be characterized as having management committed to workplace safety and took used activities to improve workplace safety and employees who were relationship-focused and low awareness-behavior congruence. Our regression model suggested that team communication, interpersonal interaction, and supervision contribute significantly to predict safety self-efficacy. And safety practices can be significantly predicted by management commitment, team communication, and safety reporting system. The results of the present study have important practical implications for organizational researchers as well as for safety researcher.

Abstract: Given the ambiguity, complexity and subjectivity of credit risk among SMEs, this paper is going to adopt FCE method to have a comprehensive evaluation of their credit risk, And it also will quantize and evaluation various risk factors to offer a qualitative reference to decision-making in optimization of commercial banks as well as management and subscription of SMEs.

Abstract: This paper analyses the risk factors of inventory finacing, establishes path diagram and the structural equation model on relations between inventory financing risk factors and makes the empirical analysis. The results indicate the operation status of the company and the characteristics of the inventory pledged have a significant effect on credit risk, and so of the level of company management on company operation.Based on this, banks should take relative measures while developing the inventory finacing.

Abstract: Along with electronics technique of development rapidly, SCM has become essential tool to the development of modern electronic technology. This paper introduces the core of ATmega16L-8PC microcontroller, and the MAX485 with low-power transceiver for the system of products counting on the production line system. The system is highly integrated, strongly stable and low power consumption, very convenient use and maintenance, with high Cost effective and practical value.