Advanced Materials Research Vol. 442

Abstract: Logistics centers are mainly comprised by a series of operations from purchasing of goods to preservation, allocation, delivery, packaging and distribution. By drawing support from advanced management technology and modernized information exchange network, logistics centers have effectively connected production and consumption altogether, making all goods circulating under an efficient, harmonious and ordered state, which in return achieved best commercial efficiency and social efficiency. Currently, logistics management software is far from enough to satisfy customers' needs, and still remains on the level of purchase, sales and inventory management. This research is conducted in allusion to the actual situation of China's information-based logistics industry, with the objective to improve modern management level of logistics industry. According to the demands of domestic logistics enterprises, we employed OLAP technology for data processing, and data mining technology in decision-making analysis, which realized information-based management in logistics centers. On this basis, we realized basic purchase, sales and inventory management. Furthermore, we as well created the data warehouse, so as to perform online analysis, processing and data mining, to realize intensive processing of data, as well as to provide support for decision-making. Computer-aided decision-making software is the development direction of management software.

Abstract: To improve the room resistivity, 96MgAl₂O₄-2SiO₂-2TiO₂ honeycomb ceramic doped with different Y₂O₃ contents was fabricated by technique of raditional solid phase sintering. The microstructure and room resistivity of the samples were nvestigated by SEM and portable pH/Cond 3400i resistivity tester. The results show that as the amount of the Y₂O₃ increases, room resistivity of the samples decreases gradually. When Y₂O₃ content is up to 0.06mol%, the resistivity becomes minimum with 5.5×10¹Ω•m. When Y₂O₃ content is up to 0.10mol%, the resistivity conversely increases.

Abstract: Pipe routing is to design the routes for pipes in 3D space, meeting various constraints and engineering rules. This paper proposes the engineering rules-based orthogonal and variable-steps pipe routing algorithm. Firstly, the cylindrical coordinate system was adopted to describe the layout space and obstacles. In view of two endpoints of the pipe and obstacles in between, the local searching space was built. Then, the searching algorithm was given according to engineering rules, which was involved with the orthogonal searching directions and their order, the searching variable-steps. Moreover, the specific flow of this algorithm was described. The algorithm requires less memory space and has a fast search speed. The case study shows it is feasible and effective.

Abstract: A novel, highly efficient and accurate adaptive higher-order finite element method (hp-FEM) is proposed for electromagnetic field problems. Presented in this paper are the vector expression of Maxwell's equations, three kinds of boundary conditions, stability weak formulation of Maxwell's equations, and automatic hp-adaptivity strategy. This method can select optimal refinement and calculation strategies based on the practical formation model and error estimation. Numerical experiments show that the new hp-FEM has an exponential convergence rate in terms of relative error in a user-prescribed quantity of interest against the degrees of freedom, which provides more accurate results than those obtained using the adaptive h-FEM. The methodology is freely available online in the form of a general public licensed C++ library Hermes (http://hpfem.org/hermes).

Abstract: As we know, due to the imbalance of technological development, all the usable technology is spreading broadly. Accordingly, technological import has become one of the existing economic and technological activities, and the good development of technological import is the basic premise to carry out technological updating and surpassing.By the elaboration of the course of technological import, this article applies the theory of sustainable development to bring in the idea of how to carry out a benign mechanism for technological importing from the perspective of the duty of government and corporation.

Abstract: Surface plasmon resonance (SPR) technology is widely used in biochemistry sensing, drug analysis, environmental monitoring and other fields. Based on the principle of surface plasmon resonance, high-precision SPR system was developed by using Kretschmann model in this paper. Automatic control, data acquisition, real-time display and storage integration of SPR system have been achieved by Labview software in PC. The single sample test results show that the system has high accuracy and stability.

Abstract: We devise a new simple loop algebra G_M and an isospectral problem. By making use of Tu scheme, the multi-component Jaulent-Miodek (JM) hierarchy is obtained. Furthermore, an expanding loop algebra F_M of the loop algebra G_M is presented. Based on F_M the multi-component integrable couplings system with two arbitrary functions of the multi-component Jaulent-Miodek (JM) hierarchy are worked out. The method can be applied to other nonlinear evolution equations hierarchies.

Abstract: In order to push the composition of components a further step forward, the component language CompJava introduces structural units of component code that may participate via the intermediary of plugs in the composition process. An extension of UML 2 component diagrams by the new features has proven very valuable in order to visualize the compositional structure of components for a better understanding and communication. The transformation of a CompJava component diagram into the CompJava language is straightforward and precisely defined.

Abstract: Motor shaft is an important component of the electromotor. In the process of motor shaft producing, the motor shaft and the rib plates are usually connected by welding. While in actual use, the structure of the motor shaft may often fracture as a result of the welding, in order to solve the above problem, the structure of YKK355-4 motor shaft and rib plates are modeled and analyzed by using finite element method, and then an optimization on the welding process and shaft structure is performed. By comparison, it is safe to conclude that the welding on both sides at the same time can reduce obviously the welding residual stress and welding deformation and the overall welding quality can be effectively enhanced under the adoption of a 3mm chamfer transition in the connection.

Abstract: This paper analyzes the influence of cutting parameter to temperature in high speed milling high manganese steel process. By measuring tool-workpiece interface temperature and analyzing temperature distribution in the workpiece, the experimental results show that maximum temperature on tool surface increases with the increase of spindle speed, while the temperature of the total workpiece increases little in the cutting process. Temperature variation law of tool-workpiece interface and total workpiece are matched with the traditional processing mechanism well.