Advanced Materials Research Vols. 204-210

Abstract: The notion of orthogonal vector-valued binary wavelet packs is introduced. Their traits is investigated by virtue of time-frequency analysis method and finite group theory. Orthogonality formulas are established. Orthonormal wavelet pack bases are obtained. A novel method for constructing a kind of orthogonal shortly supported vector-valued wavelets is presented.

Abstract: For the engine cells performance deterioration and fault diagnostics, the cells operation contributions to engine parameters changes are analyzed to account for the cells deterioration impact on parameters deviation to the EPR based baselines which are optimally modeled by polynomial regression method. The cells performance evaluation strategies for the engine type in this study are achieved through the WF-EGT, (N1-N2)-P25/P2, P3/P2-EGT linear correlation match and baseline deviation analysis and applied for verification.

Abstract: The main objective of this investigation is to explore new similarity algorithms of staff similarity in technology innovation team. First, this paper proposes the knowledge representation model of technology staff based on network, and the cliques after clustering according to network feature expresses the sub-fields. Second, from the view of knowledge contained in technology staff, this paper proposes the similarity algorithm based on VSM and the similarity algorithm based on sub-field. Finally, we use the staff classification of one technology innovation team as case study. The experiment results reveal that the similarity of the new methods is accurate than that of the old method, and the information obtained by the new methods is more than that obtained by the old method.

Abstract: For urban renewal, there are a lot of benefit-related subjects and their needs are cumbersome. As a result, the functions and mode of the platform are relatively complicated. In order to build a platform to solve the problem of public service missing in urban renewal, a study about the needs of the subjects and the function requirements of the platform has first been done. According to this study, we proposed the architecture and mode of urban renewal public service platform, and carried out a detailed analysis of its internal structure, service mode and guarantee system. The platform is finally designed as an open and service-oriented distributed system. Through this way, the design is consistent with the actual operation of urban renewal and can be used to build the platform.

Abstract: Rough sets, a tool for data mining, deal with the vagueness and granularity in information systems. This paper studies covering-based rough sets from the topological view. We explore the relationship between the relative closure and the second type of covering upper approximation. The major contributions of this paper are that we use the definition of the relative closure and the relative interior to discuss the conditions under which the relative operators satisfy certain classical properties. The theorems we get generalize some of the results in Zhu’s paper.

Abstract: We introduce the notions of fuzzy δ-t-sets, fuzzy δ_β-t-sets , fuzzy δ-B-continuiti and fuzzy δ_β-B-continuiti and obtain decompositions of fuzzy continuity and fuzzy complete continuity. And we study the relations between fuzzy δ-t-set and fuzzy δ-semiclosed set; fuzzy open set and fuzzy δ-preopen set; fuzzy open set and fuzzy δ-β-open set. Some of their properties are also investigated.

Abstract: At present, the fibers improve the performance that asphalt mixture resistance to water damage is still lack systematical awareness. For the different asphalt types, different fiber types, different fiber content of the asphalt mixture, the Marshall residual stability test and freeze-thaw splitting test are carried out, residual stability MS₀ and the split strength ratio TSR are choosed as the measure indicators, the results show that: the addition of fibers and the use of modified asphalt can improve asphalt road performance obviously, modified asphalt is the better choice of improving the performance for mixture resistance to low-temperature water damage, the fiber types sorting for improving effects, whch is asphalt mixture’s performance for resistance to water damage, are obtained, and the optimal content scope of different fiber types are obtained too, research achievement can provide scientific guidance and reference for design and construction of fiber asphalt mixture.

Abstract: The surface contact impression(SCI) seriously affects surface quality of stamping parts. Relational model of alleviating SCI including die radius , punch radius, clearance and friction coefficient are received. According to the model and forming prosesses, five factors which each chooses four levels are designed and L₁₆（4⁵）orthogonal table is constituted. The experimental and analyzed results indicate that the superior parameter affecting SCI is R_d ,the inferior is holdblanker force. The significance sequences of technology parameters affecting SCI are factor A, E, C ,B and D. These will offer technical supports for surface quality control of panels forming.

Abstract: The permanent magnet thickness is a main consideration for the permanent magnet brushless DC motor design. The effect of the magnet thickness on the different loss of the motor and motor output power is considered through the circuit-field coupling finite element method under the full-load operation. 2D transient thermal analysis is carried out as the verification of the design result. The motor is fabricated and the experimental results prove that the design motor with the certain magnet thickness can fulfill the requirements.

Abstract: As e-commerce is widely used in modern enterprises, it’s necessary for enterprises to innovate their financial management modes so that corporate financial management could adapt to the requirements of the development of informationization. This research firstly studies the background in which Informationization of financial management based on E-commerce has developed and the connotation of the concept. Then, it analyzes the basic features of financial management in the e-commerce environment and points out the major deficiencies of traditional financial management. Finally, it makes suggestions on how to build an informationization system for financial management based on e-commerce. It is hoped that these analyses and suggestions would be helpful in working out a new mode of corporate financial management.