Key Engineering Materials Vols. 474-476

Abstract: Customer credit evaluation is very important for customer relationship management in Enterprise Resource Planning. However, how to evaluate the customers’ credit is a complicated problem. In this paper, we present a Customer Credit Visual Analysis Model (CCVAM) that can be used to evaluate and classify the credibility of new customers according to the historical data about past customers. The model is based on Markov Logic Networks (MLNs) that combines probability and first-order logic with a weight attached to each formula. In this model, the basic rules or indexes based on expert knowledge are transformed into the representation of normal form. Then MLNs is obtained by combining first-order logic and probabilistic graphical models of the rules. After acquiring the weights attached to the rules in a first-order logic knowledge base, the model provides an interface for visualize the corresponding relationships among the rules and weights. The model has been applied to grade clients’ credit degree in an international enterprise and achieved anticipative results. This model can also be used in other areas where level evaluation is required.

Abstract: To improve the wear and mechanical properties, SiC and Si₃N₄ whiskers reinforced Si₃N₄ composites were sintered by hot press sintering technique at 1800 and 1900°C for 1 h. The Friction and wear behaviors of Si₃N₄-SiC whisker reinforced Si₃N₄ composites have been studied by using a reciprocating sliding apparatus. The results show that Si₃N₄-SiC whisker can greatly improve the hardness, fracture toughness and wear resistance of Si₃N₄. Lower sintering temperature can make both the grain dimension and interface area of the whiskers with the matrix decrease, resulting in relatively uneasy fracture of the whiskers. This uneasy fracture of the whiskers is the main reason for improvement in fracture toughness, and thus, the decrease in wear rate compared with those of the samples sintered at higher temperature and Si₃N₄ material.

Abstract: This paper analyses the influence of environmental management in the managerial perception in small and medium-sized enterprises as a competitive opportunity, and the effect of this managerial perception in the adoption of a higher proactive environmental management. It also shows that the link between environmental management and financial performance is neither necessary direct nor single, but it may depends on a mediating variable, the competitive advantage. A matrix inspired by Boiral’s research works is used to visualize the different types of environmental involvement of these organizations. The aim of this paper is to present a snapshot of the reality of environmental management in small and medium-sized enterprises.

Abstract: Basing on the principle of laser-linear array CCD detective technology, a high accuracy non-touch on-line optical fibre CCD sensor for monitoring roller wear is brought forward. The principle and composition of the laser-linear array CCD detecting system and the operation process were expatiated. Aiming at the axes shifting of the roller during the detecting process, compensative steps were adopted from the vertical and the parallel detecting surface. And it enhanced the accuracy of the detecting system effectively. Experiments proved that the accuracy of the system could reach to the demand of practical production process. It provides a new method for the high speed, accurate and automatic on line detection of the roller wear.

Abstract: Electronic business is an emerging business activity. Electronic busines affects commodity trading activities, so it affects logistics deeply. It is important to the development of logistics. Logistics support electronic busines strongly. The rapid and health development of logistics and electronic busines are benefit to each other.

Abstract: In allusion to insufficiency in teaching method of tradition “one-to-one” piano class, we lead to innovative means of "one-to-many" teaching method in digital piano lesson to resolve the issues, we analysis and research the issues in the development of digital piano collective classes, to look for a better and new piano teaching in universities.

Abstract: Early 1980's MIDI technology coming into being, it has created condition for the development of modern music technology. From the MIDI, computer music, multimedia music to music computer and network teaching, it has already played an important role in music education concept and the reform of the teaching means. In the higher music college's teaching, the best solution to realize the music teaching means modernization development is the configuration and application of multimedia teaching systems. We have the analysis and introduction on the teaching system hardware and software configuration and their in music teaching, creation, scientific research and management application.

Abstract: During the past 10 years, online shopping developed quickly, which made it a hot topic in marketing research. From 5 aspects, demographics, purchasing behavior, online experience, website design and marketing mix, this paper not only concludes previous research findings, but also analyzes conflicting viewpoints among the present research and deliberates future research opportunities related to online shopping.

Abstract: Firstly, the requirements of production control and the features of discrete manufacturing process were researched , the production process control system architecture was built. Then, the key technologies used in the system realization were studied. Automatic identification technology was used in data acquisition; product tracking and event tracking technologies were used to implement production monitor, abnormal monitor respectivly in application server; Web technology was used in production statistics and analysis in presentation layer. Data acquisition and statement analysis implementation were separately based on the Windows and Web application of NET platform; products tracing and event tracking implementtation were based on the configuration visual software platform: GE Cimplicity. Every layer is distinct and seamless integration in the entire system, the whole architecture has strongly robustness and expandability. Finally, a case proved the validity of this system.

Abstract: In order to improve the rollover crashworthiness of coach, three roof beam structures commonly used in coach were established with finite element models for the rollover simulation, then the energy absorption, acceleration and body pillar deformation were analyzed. The simulation results show that circle-curved transition and non-curved transition on the roof have better collision performance. Especially, the latter not only reduces the acceleration peak value, but also transfers more collision energy to the offside lateral. The whole coach body will be involved in deformation, thus, the intrusion of survival space would be reduced. Finally, the complete vehicle skeleton finite element model of a 6127-type high-bed coach was built, and the influences of circle-curved transition and non-curved transition on the roof in rollover test were analyzed.