Advanced Materials Research Vols. 433-440

Abstract: Through the in-depth study of the existing distributed database query processing technology, this paper proposes a distributed database query processing program. This program optimizes the existing query processing, stores the commonly used query results according to the query frequency, to be directly used by the subsequent queries or used as intermediate query results, thus avoiding possible transmission of a large number of data, thereby reducing the query time and improving query efficiency.

Abstract: Through in-depth study on the existing rough set and data mining technologies, for the shortcomings of the existing data mining algorithms based on rough set, this paper presents an improved algorithm. This algorithm has the attribute nuclear as the starting point of reduction calculation, filtering distinguishable matrix as the basis for selection of candidate attributes, and condition attribute, decision attribute information entropy as heuristic information, to find the smallest reduction of the decision information system. The improved algorithm well solves the defects of the heuristic algorithm based on distinguish matrix, reducing the property search space, so as to improve the reduction speed.

Abstract: Through the in-depth analysis of the psychological and physiological characteristics of human visual perception, combined with the technical characteristics of web page itself, the characteristics of visual process, and the aesthetic theories, this paper analyzes the main components of web interface such as page layout, text, color, and animation in detail, and proposes the corresponding design principles, with which to improve the clarity, accuracy, and effectiveness of the visual information transmission in the web page.

Abstract: In this paper, in accordance with the current difficulties in the document and data exchange between different departments of an enterprise, the authors carry on analysis on the identity authentication and authorization problems in the document transmission system at the present time, and design a scheme for the electronic document exchange platform which is based on the cryptography algorithm of identity, and finally put forward an electronic document safe exchange platform based on the identity, which provides a security guarantee for the implementation of the free flow and conversion of the electronic documents among different intranets. In addition, the identity authentication and authorization access control with safety and higher reliability can be realized for the electronic documents transmission system in the applications of network as well.

Abstract: Segmentation based on customer value and needs can better guide marketing decision-making of airlines as well as better understand needs of high-value passengers. To address customer segmentation in Customer Relationship Management (CRM), the paper proposed and designed airline customer segmentation system structure based on ant colony clustering. The key ant colony clustering algorithm was also designed and implemented. The ant colony clustering algorithm mainly used adaptively adjusted group similarity to perform clustering and access to initial clustering result. Then all data representation points and abnormal data were inputted into lattice plane scattered randomly. Ant colony algorithm was used for clustering once again and corresponding class label was used to delete abnormal values and obtain complete clusters. Data test example based on ant colony clustering customer analysis platform illustrated its feasibility and effectiveness

Abstract: Internet growth in recent years has encouraged many new applications to be provided for the end user. However, providing and maintaining high quality of service for these new applications is a challenging matter that is getting the attention of many many researchers nowadays. The QoS challenge is emanating from the diversity of these applications, in term of bandwidth requirements and high sensitivity to delay and delay variation. Three main architectures were proposed by IETF in an effort to make the IP QoS a reality. They are integrated services (Intserv), differentiated services (DiffServ) and multiprotocol label switching (MPLS). Sometimes perceived as competitor, these architectures are in fact complementary developments that approach the QoS challenge from different network perspectives. Thus these approaches can work together in a manner that provides a global QoS within Heterogeneous network. This paper aims to propose and discusses an improved admission control mechanism in order to achieve a global QoS in the HN Network. The proposed mechanism uses MPLS-TE tunnels at the core of Heterogeneous networks to maintain QoS for inter-domain flows and applications.

Abstract: Electrical and Electronic objects, which have a temperature of operating condition above absolute zero, emit infrared radiation. This radiation can be measured on the infrared spectral band of the electromagnetic spectrum using thermal imaging. Faults on electrical systems are expensive in terms of plant downtime, damage, loss of production or risk from fire. If the threshold temperature is timely detected, the electrical equipment failures can be avoided. This paper presents a straightforward approach for thermal analysis that examines power loads and large area thermal characteristics. A thermal imaging camera was used to collect thermal pictures of the tested system under various operating conditions. These pictures are analyzed using thermal diagnosis system in order to detect the fault location that may occur and improve inspection efficiency.

Abstract: The standard lattice Boltzmann method has only been applied to the uniform structured grid so far. This limitation can be removed by discretization of the position as well as the velocity space separately. In the present study the generalized coordinate is introduced to transform the lattice Boltzmann Equation (LBE) from physical domain to computational domain. This method uses the finite difference method to discrete the local derivatives in computational space. The central scheme uses to estimate the convection term. The generalized coordinate transformation method introduced in this study has been validated against a sample case study. For this purpose, an unsteady Couette flow between two cylinders has been examined. Good agreement between most of the results of this study and the available data in the literature is reached. The source of some discrepancies between the current results and available data seems to be due to discretization method used in present work to calculate the Jacobian and metrics of transformation matrix.

Abstract: We consider on real line R a space of signals which are p-power (1 ≤ p ≤∞ ) Lebesgue integrable with weight w(x) = (1 - x)α (1 + x)β , ( α, β > -1) on [-1, 1] R. A subspace χ^ab_Nvof X^ab_vis recognized by restricting the types of signals, so that the signals are represented by Jacobi Polynomials. Then by the derivability of Jacobi polynomials, we reach to the conclusion that the signals of the subspace X^αβ_Nv can be represented by the Coifman wavelets. The method involves the N rlund summation of Fourier-Jacobi expansions and the properties of Jacobi polynomials in [--1, 1] R

Abstract: The application and development of the Internet of Things have close relationship with the construction of smart grid. Generally, each of electrical equipment can be connected together by wireless communication technology and sensing technology in the Internet of Things to make the smart grid become a real-time interactive electrical network. This paper summarizes the development situation, analyzes its structure and characteristics and introduces the key technologies supporting the application of the Internet of Things. In view of the functions and features of the Internet of Things and the development requirements of smart grid, it analyzes the specific application scope and level of the Internet of Things in the smart grid. It makes some concrete analysis and discussion about the application of the Internet of Things in the asset management and remote automatic reading meter system of smart grid and summaries and prospects the application situation of the Internet of Things in the smart grid