Advances in Computer Science Research

To solve the problems such as isolation of information, poor sharing and reusability, difficulty of finding resources and providing personalized information service, a solution method of ontology-based query and reasoning was introduced. According to the method a function module and working process of...

This paper presents a new method for image classification based on image saliency region. The proposed attention region latent SVM (ARLSVM) is highly distinctive by training in a weakly-supervised manner which without requiring objects position or bounding boxes in training images. We use a latent SVM...

This paper proposes an efficient method of combining modelling to forecast day-ahead electricity price. The basic idea of this method is to develop a robust technique to select the proper combining weights of individual models according to their historical performance on similar circumstances. Firstly...

Two numerical algorithms based on H1-Galerkin mixed finite element (GMFE) methods are presented and analyzed for a fourth-order diffusion equation. By introducing three variables with two different ways, the two first-order system of four equations are formulated. The semi-discrete optimal error estimates...

In this paper, the optimal channel exploration is proposed for cognitive radio networks. In the networks, primary users (PUs) utilize the channels with fixed slot structure. Cognitive users (CUs) should sense the channels within each slot. We study the relationship of the channel states between the nearby...

The significant development in mobile internet greatly enrich our daily life, meanwhile it challenges the capacity of the current cellular networks. The limited frequency resources are the main bottleneck of the development of cellular networks. Device-to-device(D2D) communication is a new technology...

This paper takes a kind of 3-TPT Parallel Machine Tool (PMT) as the objective of research. The positive and inverse kinematics mathematical model of constraint chain are established through the kinematics analysis to the constraint chain of this machine, the inverse kinematics model that has unique solution...

The estimate methods of evapotranspiration was studied in several methods including field measurement, instrument measurement and Penman - Monteith formula. There are slight differences between the results calculated by the 3 methods. As a traditional method, field measurement has high credibility. By...

In order to solve the problem of semantic heterogeneity in data integration, this paper places emphasis on establishing a good data model in the stage of expressing data. Through the ontology modeling method on audit data integration, we using the method of top-down ontology integration, put forward...

Applying bifurcation method, some new exact traveling wave solutions of a class nonlinear partial differential equations generated by the Jaulent-Miodek hierarchy models are obtained, which corresponding to the kink wave, anti-kink wave solutions of its traveling wave system.

In the different subsets of 4-parameters space , we obtain the exact traveling wave solutions of a class nonlinear partial differential equations which are closely related to the periodic wave solutions of (3+1)-dimensional nonlinear evolution equations, generated by the Jaulent-Miodek hierarchy. These...

Outdoor SVG (container-type) is especially suitable for limited space, such as old substations. The limited space of the entire device, and electromagnetic noise inside, especially that of the power chamber which is far higher than ordinary SVG. In the final analysis, the study on the law of change of...

SVG is the third generation static var compensator that performs reactive power regulation by sending out capacitive or inductive current. Since numerous high power electronic components (GTO, IGBT) and PWM technology are used, the intensity and type of electromagnetic interference generated by frequent...

in recent two years, electrical load in Fushun District increases continuously, and the impact and harmonic pollution on the power grid rises continuously, voltage quality problem becomes aggravated. Through multi-disciplinary analysis and demonstration, Fushun Power Supply Company installed SVC/SVG...

Compared with traditional reactive compensation equipment, STATCOM features complicated structure and numerous components. And STATCOM utilizes multiple redundancy technologies to meet long-term stable operation requirements of power system for the equipments in the substation. This paper introduces...

With increased smart upgrading and reconstruction of power grid in China, typical representative of the third generation dynamic reactive power compensation technology, i.e. STATCOM(SVG), has been used widely in power transmission and distribution network all over China with good economic and social...

Based on investigation dada on Petroleum Hydrocarbon (PHC) in April, August and November 1981 in Jiaozhou Bay, this paper analyzed the vertical distribution of PHC. Results showed that PHC contents were increasing from April and reaching the peak in August, and were decreasing in November. The distribution...

Based on the analysis on the transfer process of benzene hexachloride (HCH), this paper proposed the theory of vertical water body effect, vertical water body cumulative effect, and vertical water body dilutive effect, including definition, main function, and concept model. Furthermore, this paper applied...

Based on investigation dada on petroleum hydrocarbon (PHC) in April, June, Juny and October 1982 in Jiaozhou Bay, this paper analyzed the content, distribution and seasonal variations of PHC. Results showed that PHC contents in April, June, July and October in surface waters ranged from 0.03-0.07 mg.L-1,...

Based on investigation dada on Cadmium (Cd) in bottom waters in Jiaozhou Bay in 1982, this paper analyzed the vertical distribution and seasonal variation of Cd. Results showed that The contents of Cd ranged from 0.13-0.53 g.L-1, which were meeting Grade I (1.00 g.L-1) in National Sea Water Quality Standard...

Based on investigation dada on Petroleum Hydrocarbon (PHC) in April, August and November 1981 in Jiaozhou Bay, this paper analyzed the content, surces and input feature of PHC. Results showed that the content of PHC in study area ranged from 0.011-0.889 mg.L-1, and the highest value in April, August...

At present, the application of transmission line insulator anti pollution flashover coating is mainly the room temperature vulcanized (Room Temperature Vulcanized, RTV) silicone rubber coating. Insulator coated with RTV paint, not only enhanced the hydrophobicity on the surface of the insulator, pollution...