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Fu D.C.,Jilin University | Fu D.C.,Jilin Province Economic Management Cadre College | Wen Y.H.,Jilin Province Economic Management Cadre College | Wang L.,Jilin University
Applied Mechanics and Materials | Year: 2014

Based on material mechanics theory that loads-internal force-deformation relationship of rod, this paper establish elastic foundation beam model, and establish loads-internal force-deformation differential equation of piles and columns, and identified boundary conditions according to mechanical analysis of piles and columns, Based on the boundary conditions, deformation coordination and internal force equilibrium conditions, solving differential equations, then obtain column - pile components' internal forces. This method has good mechanical model support, and using mathematical computing software can derive the analytical expressions. © (2014) Trans Tech Publications, Switzerland.

Fu D.-C.,Jilin University | Fu D.-C.,Jilin Province Economic Management Cadre College | Wen Y.-H.,Jilin Province Economic Management Cadre College | Wang L.,Jilin University
Applied Mechanics and Materials | Year: 2014

To assess the carrying capacity and reliability of the -Longtan Bridge, applied static load in the middle of the bridge step by step, then collected strain and deflection data of the beam. In order to understand the working principle of a bridge under dynamic loads, dynamic load test - Vehicle traffic test and fluctuation test t was performed, and vibration frequency data was collected. This paper described the basic principles of the bridge static and dynamic tests, and introduced the program of the experiment. Based on the test data, the static and dynamic mechanism of the bridge was discussed, the conclusion provides the basis for further study of bridge mechanism of the mechanical. © (2014) Trans Tech Publications, Switzerland.

Zhang J.-P.,Jilin Province Economic Management Cadre College | Wang F.-G.,Luohe Vocational and Technology College
Wuhan Ligong Daxue Xuebao/Journal of Wuhan University of Technology | Year: 2010

As the campus network keeps developing, the issue that how to build up a reliable campus network security system becomes a current question needs consider urgently. At the present time, most of the campus network take traditional passive protect measures, which always lag behind network attacks. Honeypot Technology can transform the passive network security protection to initiative. It uses its unique feature to attract attackers and analyses the attacker's attacks at the same time to find the effective countermeasures.

PubMed | Dalian Maritime University and Jilin Province Economic Management Cadre College
Type: | Journal: TheScientificWorldJournal | Year: 2014

Though label propagation algorithm (LPA) is one of the fastest algorithms for community detection in complex networks, the problem of trivial solutions frequently occurring in the algorithm affects its performance. We propose a label propagation algorithm with prediction of percolation transition (LPAp). After analyzing the reason for multiple solutions of LPA, by transforming the process of community detection into network construction process, a trivial solution in label propagation is considered as a giant component in the percolation transition. We add a prediction process of percolation transition in label propagation to delay the occurrence of trivial solutions, which makes small communities easier to be found. We also give an incomplete update condition which considers both neighbor purity and the contribution of small degree vertices to community detection to reduce the computation time of LPAp. Numerical tests are conducted. Experimental results on synthetic networks and real-world networks show that the LPAp is more accurate, more sensitive to small community, and has the ability to identify a single community structure. Moreover, LPAp with the incomplete update process can use less computation time than LPA, nearly without modularity loss.

Tan X.,Jilin Province Economic Management Cadre College
International Journal of Simulation: Systems, Science and Technology | Year: 2016

With the rapid development of information and Internet technology, enterprise information system applications based on Java Web technology is being used widely. In order to improve the stability and efficiency of the system, ensuring access to database performance is extremely important. With the increasing information and complexity characteristics of network data transmission information, common database technology has been unable to quickly and efficiently give the data exchange with complete server database. Several issues come to light such as: i) how to do reasonable database design and management, ii) how to improve database query optimization, leading to an urgent need to solve the problem with a Web application system in the era of massive data. In this paper we address Java Web information system architecture of the most prominent database access performance issues, and study database optimization techniques. At the same time, against the database access latency problems that occurred in operation of the project, the paper gives a detailed database optimization. The results show that through those database optimization we can greatly improve running speed. The developed methodologies can be directly transplanted to run on another platform and does not require the application of the system during the relevant adjustments and modifications for applications in aircraft design and component reuse. © 2016, UK Simulation Society. All rights reserved.

Dong G.,Jilin Province Economic Management Cadre College
International Journal of Continuing Engineering Education and Life-Long Learning | Year: 2012

A network-based course was developed for the subject of computer network basis at a higher vocational college. This paper describes the functional design, structural design, and assessment design of the course. In terms of functional design, the course has four subsystems including the basic information subsystem, downloading subsystem, teaching video subsystem, and forum subsystem. The structural design focuses on web page design including navigational features, online tests, and interactivity design. The assessment design intends to investigate students' performance and teaching quality. A tentative evaluation was conducted on the students to examine their perceptions on the design and use of the course. Results show that the network-based course was more efficient than the conventional classroom teaching. Most students mentioned that they gained additional knowledge from the course. Some limitations of the course were also identified and would be addressed in the future. Copyright © 2012 Inderscience Enterprises Ltd.

Li X.,JiLin Province Economic Management Cadre College
International Journal of Control and Automation | Year: 2016

In this paper, a PD control algorithm based on fuzzy logic dead compensation has been proposed. The fuzzy logic dead zone compensator was used to compensate the dead zone which existed in the mechanical system, PD control scheme was used to control trajectory of the joints of robot, so that the stability and robustness can be improved. In order to verify the validity of the control algorithm, we realized the proposed adaptive control strategy in MATLAB. The simulation results has revealed that:comparing with the traditional PD control scheme, the proposed PD control algorithm based on fuzzy logic dead compensation can effectively compensate the dead zone which existed in the mechanical system, also the position tracking performance and precision of the manipulator has been enhanced. © 2016 SERSC.

Li L.,Jilin Province Economic Management Cadre College
Chemical Engineering Transactions | Year: 2015

The BP neural network is the most mature and widely used artificial neural network model. It has the simple structure, strong operability and good self learning ability. This paper first introduce the neural network in general. This paper choose the BP neural network as a method of simulated prediction of 2014 to 2023 Jilin Province rural tourism revenue and scenic area. Then this paper identify the prediction indicators of the neural network, complete the network training. The results shows the BP neural network has a good simulation ability of arbitrary complex nonlinear system and a strong fitting ability. The simulation process also indicates the BP neural network has many deficiencies, including difficulty in initial learning rate selection and low convergence speed. Copyright © 2015, AIDIC Servizi S.r.l.

Zhang H.,Jilin Province Economic Management Cadre College | Liu Q.,Jilin Province Economic Management Cadre College
Chemical Engineering Transactions | Year: 2016

Computer network route optimization has been a subject of more attention in the art. This article routing optimization issues in-depth study of the ant colony algorithm to solve distributed parallelism, and propose measures for improvement ant colony algorithm node state transition rule. Pheromone updated rules and improved the classical ant colony algorithm performance. Simulation results show that the improved ant colony algorithm proposed in this paper can change according to the constraints, preferably the most appropriate routing information. Meanwhile, after two improvements, ant colony algorithm convergence rate may be raised, the probability fall into local extreme is also greatly reduced, more conducive to large-scale computer network routing optimization problem. Copyright © 2016, AIDIC Servizi S.r.l.

Song X.H.,Jilin Province Economic Management Cadre College
Applied Mechanics and Materials | Year: 2014

The paper mainly discusses the application of BIM technology in computer aided architectural energy efficiency design. First the paper analyzes the development and characteristics of BIM analysis software, discusses the present situation of computer aided architectural energy efficiency design. Taking Chongqing area as an example, the paper were discussed simulation software and application of BIM technology from the scheme design stage and anaphase to illumination analysis, so as to provide reference for the future research and application. © (2014) Trans Tech Publications, Switzerland.

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