会议论文集名称：
Advances in Intelligent and Soft Computing
关键词：
Instructional method;Essence;Innovation
摘要：
To achieve teaching aims, the efficient application of instructional method is needed. The essence of instructional method means the unity of teaching methods and learning methods. The first step to innovate instructional method is to update ideas and to mix the teaching methods and learning methods in order to interact each other; the second step is to choose the appropriate instructional method according to particular cases; at last, optimize and composer all kinds of instructional method to gain the best result.
期刊：
2011 Symposium on Photonics and Optoelectronics (SOPO),2011年:1-4 ISSN：2156-8464
作者机构：
[Jie Li] Department of Electrical and Information Engineering, Wuhan Polytechnic University, Wuhan, China;[Peng Wu] Institute of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan, China
摘要：
The nonlinear response and strong coupling effect of control channel in Deformable Mirrors make it difficult to obtain the desired mirror surface shapes. An efficient nonlinear model of deformation with respect to input voltages is presented using a back propagation neural network (BPNN). The residual relative error of the proposed model shows the improvement of accuracy of an order about 5 as compared to that of linear model, and with no significant increase of time. I. INTRODUCTION Membrane DMs using silicon bulk micromachined techniques offer the ability of wavefront compensation and control for high power laser system. Membrane DMs adjusts wavefront using an array of spatially distributed actuators that deform a continuous membrane reflective surface. However, because of the nonlinear and coupled responses of control actuators, deformation model and membrane control algorithm used in real-time wavefront compensation are still puzzles. The model of Influence Function(1), which is currently used in most of adaptive optics systems, is based on the linear relationship between the deformation of DMs and the square of input voltages. If the mirror surface produced is small enough compared with the spacing of membrane DMs, this linear model is effective for realtime wavefront compensation. Otherwise, it's necessary to introduce a nonlinear model. In the last decade, considerable amount of effort has been made to settle the problem. Different approaches were developed by Cai et al(2), Gilbert et al(3), and Wang et al (4) based on Finite Element Analysis method, iterative schemes and contract mapping method respectively for numerical solution of the nonlinear models of membrane DMs. However, the previous algorithms are ineffective in an adaptive wavefront compensation system. In this paper, we discuss the nonlinearity problem in modeling of the deformation of membrane DMs. We propose a nonlinear model based on BPNN to overcome this problem. A. Micro-machined deformable mirror Electrostatic deformable mirrors are amongst the most commonly used adaptive optics for beam shaping and for the correction of wavefront aberrations. DMs are a popular choice for laser beam shaping because of their reflective nature and broad bandwidth. Deformable mirrors are not naturally programmable devices that can give arbitrary shapes. The deformation is linear in applied force but the force varies with the square of the applied voltage and inversely with the membrane-electrode separation. Although open-loop wavefront or beam-shape control can in principle be achieved using knowledge of a DM's influence matrix , its nonlinear characteristics make implementation of a wide range of predeformed shapes problematic without the use of feedback through a wavefront sensor or some other form of closed-loop control.
摘要：
Based on the physical numerical modeling of the flow field of the muffler in this paper, the author simulated the field by numerical method with Fluent and analyzed the effect which the internal flow field has on the performance of the muffler, which may be a credible guidance of the muffler structural design.
作者机构：
[Chen, Jun] Naval Architecture and Power Engineering College, Naval University of Engineering, Wuhan, 430022, China;[Shi, Xiong] Department of Electrical and Information Engineering, Wuhan Polytechnic University, Wuhan, 430023, China
通讯机构：
Naval Architecture and Power Engineering College, Naval University of Engineering, China
会议名称：
2011 SREE Conference on Engineering Modelling and Simulation, CEMS 2011
会议时间：
August 11, 2011 - August 12, 2011
会议地点：
Hongkong, Hong kong
会议主办单位：
(1) Naval Architecture and Power Engineering College, Naval University of Engineering, Wuhan, 430022, China; (2) Department of Electrical and Information Engineering, Wuhan Polytechnic University, Wuhan, 430023, China
关键词：
Fractal;3-D Terrain;Real Sense Graphics;Visualization
摘要：
In this paper, the overall designing idea on real terrain is firstly proposed, the geometric modeling process is introduced, BinSplit binary segmentation algorithm is put forward based on fractal theory and midpoint displacement algorithm idea. Then visualization of 3-D terrain based on OpenGL is accomplished; thus real sense terrain is generated and good result is gained.
作者机构：
[仰彩霞] Department of Electrical and Information Engineering, Wuhan Polytechnic University, Wuhan 430023, China;[刘开培; 王东旭; 仰彩霞; 郑雪] School of Electrical Engineering, Wuhan University, Wuhan 430072, China;[李建奇] Central South University of Forestry and Technology, Changsha 410004, China
通讯机构：
[Yang, C.-X.] D;Department of Electrical and Information Engineering, Wuhan Polytechnic University, China
期刊：
Proceedings - International Conference on Machine Learning and Cybernetics,2011年3:1425-1429 ISSN：2160-133X
通讯作者：
Zeng, W.(zengwude@yahoo.com.cn)
作者机构：
[Zeng, Wu] Department of Electric Information Engineering, Wuhan Polytechnic University, Wuhan 430023, China;[Hong, Zhi-Guo] School of Computer, Communication University of China, Beijing 100024, China
作者机构：
[徐建; 石雄] School of Electrical and Electronic Engineering, Wuhan Polytechnic University, Wuhan 430023, China;[徐建; 刘胜; 甘志银] Institute of Microsystem, Huazhong Univ. of Sci. and Technol., Wuhan 430074, China;[徐建; 刘胜; 甘志银] School of Mechanical Science and Engineering, Huazhong Univ. of Sci. and Technol., Wuhan 430074, China
通讯机构：
School of Electrical and Electronic Engineering, Wuhan Polytechnic University, China
作者机构：
[Shi, Xiong] Wuhan Polytech Univ, Dept Elect & Informat Engn, Wuhan, Peoples R China.;[Chen, Jun] Naval Univ Engn, Naval Architecture Power Engn Coll, Wuhan, Peoples R China.
会议名称：
International Conference on Computers, Communications, Control and Automation (CCCA 2011)
会议时间：
FEB 20-21, 2011
会议地点：
Hong Kong, PEOPLES R CHINA
会议主办单位：
[Shi, Xiong] Wuhan Polytech Univ, Dept Elect & Informat Engn, Wuhan, Peoples R China.^[Chen, Jun] Naval Univ Engn, Naval Architecture Power Engn Coll, Wuhan, Peoples R China.
关键词：
Virtual Reality;Image Based Rendering;Panoramic Image;Image Mosaic
摘要：
Matching area of adjacent images of sample photos projected to unified cylindrical surface was determined based on minimum brightness difference theory over overlap area; image fusion was achieved by linear brightness compensation method, and then panorama image mosaic was accomplished. Test results show that by the ideas proposed in this paper can improve the quality and speed of image mosaic and good result is gained.
作者机构：
Department of Mathematics and Physics, Wuhan Polytechnic University, Wuhan, China;Department of Electrical and Information Engineering, Wuhan Polytechnic University, Wuhan, China
通讯机构：
Department of Mathematics and Physics, Wuhan Polytechnic University, China
作者机构：
[Shi, Xiong] Department of Electrical and Information Engineering, Wuhan Polytechnic University, Wuhan, 430023, China;[Chen, Jun] Naval Architecture and Power Engineering College, Naval University of Engineering, Wuhan, 430022, China
通讯机构：
Department of Electrical and Information Engineering, Wuhan Polytechnic University, China
会议名称：
2011 SREE Conference on Engineering Modelling and Simulation, CEMS 2011
会议时间：
August 11, 2011 - August 12, 2011
会议地点：
Hongkong, Hong kong
会议主办单位：
(1) Department of Electrical and Information Engineering, Wuhan Polytechnic University, Wuhan, 430023, China; (2) Naval Architecture and Power Engineering College, Naval University of Engineering, Wuhan, 430022, China
关键词：
Image based rendering;Image mosaics;Panoramic images;Virtual reality
会议论文集名称：
2010 International Conference on Signal and Information Processing(2010年IEEE信号与信息处理国际会议 ICSIP2010)论文集
关键词：
agriculture water consumption;BP neural network;particle swarm optimization;forecast
摘要：
Forecasting agriculture water consumption is an important task in configuration of water resources. In order to forecast agriculture water consumption, this paper presents an improved BP neural network. The proposed approach employs a novel particle swarm algorithm for training weights in BP. Experimental results show that our proposed method IPSO-BP provides more accurate prediction ability than original BP algorithm and BP based on genetic algorithm (GA-BP).
摘要：
Writer identification is an important and active branch of biometrics, which means the methods for uniquely recognizing humans based upon their intrinsic physical or behavioral traits. In this paper, we propose one new method for off-line, text-independent writer identification by using the fractal dimension of wavelet subbands in Gabor domain of the handwriting images. In this method, the handwriting images are firstly decomposed into a series of Gabor subbands at different orientations and frequencies. Every Gabor subband is extended into one data sequence. Then, every sequence is decomposed into a series of wavelet subpatterns by wavelet transform. Afterwards, the mesh fractal dimensions of every wavelet subpattern are extracted as the feature for writer identification. Compared to the traditional Gabor method for off-line, text-independent writer identification, our method can extract more effective features to distinguish the handwritings, and hence achieve much better identification results.
期刊：
PROCEEDINGS OF 2010 3RD IEEE INTERNATIONAL CONFERENCE ON COMPUTER SCIENCE AND INFORMATION TECHNOLOGY, VOL 9 (ICCSIT 2010),2010年:260-264 ISSN：2381-3458
会议论文集名称：
2010 3rd IEEE International Conference on Computer Science and Information Technology(第三届IEEE计算机科学与信息技术国际会议 ICCSIT 2010)论文集
关键词：
timeslot assignment;multicast;bandwidth;QoS
摘要：
Wireless mesh network (WMN) has recently emerged as a promising technology for next-generation wireless network. In WMNs, many important applications, such as audio/video conferencing, require the support of multicast communication with quality-of-service (QoS) guarantee. In this paper, we investigate the issues of QoS multicast routing in wireless mesh networks. The paper studies TDMA-based timeslot allocation, and presents an effective heuristic algorithm for calculating bandwidth of a multicast tree. We also propose a novel DSR-based multicasting routing algorithm. Simulation results show that compared with MAODV, the proposed QoS routing algorithm can significantly improve the performance of QoS multicast routing in terms of success ratio and network cost.
