期刊：
Advances in Information Sciences and Services,2012年4(8):93-100 ISSN：1976-3700
通讯作者：
Chen, M.(educhenm@yahoo.comm)
作者机构：
[Lu, Wei; Liu, Guanhai; Chen, Mao; Liu, Zheng] National Engineering Research Center of E-learning, Central China Normal University, Wuhan 430079, China
通讯机构：
[Chen, M.] N;National Engineering Research Center of E-learning, , Wuhan 430079, China
关键词：
3D dynamic geometry system;Dynamic geometry;Interaction mechanism;Update mechanism
摘要：
Dynamic geometry system (DGS) is a computer application that allows the exact on-screen plotting of geometric constructions, and the geometric properties among them remain unchanged when one or several geometric objects are moved. Currently, there are many DGS for plane geometry education, but hardly any DGS are available for space geometry education, especially in China. To aid the teaching and learning of space geometry, we proposed and implemented a three-dimensional DGS named Dragon3D Sketchpad in this paper. Firstly, we made a requirement analysis of the system and presented the system architecture. Then, we designed the interaction and the updating mechanism. At last, we used Microsoft Visual Studio 2008 development tools to implement the system in the Windows environment, and demonstrated the functions by some examples. The results show that geometric objects could be plotted and manipulated easily in three dimensions, the common functions for a DGS such as animation, transformation, locus, iteration and measurement are realized for the spatial objects, and the updating process is very smooth, which means that the Dragon3D Sketchpad is useful in space geometry class.
期刊：
Proceedings of 2011 International Conference on Computer Science and Network Technology, ICCSNT 2011,2012年3:1424-1428
通讯作者：
Zhang, Maoyuan
作者机构：
[Lou, Zhenxia; Zhang, Maoyuan; Wan, Jan] Cent China Normal Univ, Dept Comp Sci & Technol, Wuhan, Peoples R China.;[Chen, Jinguang] Cent China Normal Univ, Engn & Res Ctr Informat Technol Educ, Wuhan, Peoples R China.
通讯机构：
[Zhang, Maoyuan] C;Cent China Normal Univ, Dept Comp Sci & Technol, Wuhan, Peoples R China.
会议名称：
2011 International Conference on Computer Science and Network Technology(2011计算机科学与网络技术国际会议 ICCSNT 2011)
会议时间：
2011-12-24
会议地点：
哈尔滨
会议主办单位：
Harbin Normal Univ
会议论文集名称：
2011 International Conference on Computer Science and Network Technology(2011计算机科学与网络技术国际会议 ICCSNT 2011)论文集
关键词：
Information retrieval;Re-ranking;Cloud model;Uncertainty
摘要：
By introducing cloud model, this paper presents a re-ranking method which improves the accuracy of the IR (information retrieval) while recall is preserved. It is rare in traditional Chinese information retrieval to consider uncertainty while calculating the related degree of the query and each document in the result set. This paper researches IR in a perspective of uncertainty by introducing cloud model, measures the relevance between the query and document by the uncertainty degree that using document represents the query, and then re-ranks the result set. Experiments on NTCIR-5 (the 5th NII Test Collection for IR Systems) document collection for SLIR (Single Language IR) show that this method achieves an 18.08% and 26.50% improvement comparing to the initial retrieval method without any re-ranking.
期刊：
International Journal of Advancements in Computing Technology,2012年4(1):24-32 ISSN：2005-8039
通讯作者：
Ling, Y.(ytling_ccnu@yahoo.com.cn)
作者机构：
[Yi, Benshun; Ling, Yutao] School of electronic information, Wuhan University, Wuhan 430072, China;[Wu, Jianbin] Department of Information Technology, Huazhong Normal University, Wuhan 430079, China
通讯机构：
[Ling, Y.] S;School of electronic information, , Wuhan 430072, China
关键词：
Access Selection;QoS;Wireless Networks
摘要：
The next generation wireless network environments are expected to support anywhere, anytime connectivity for high-performance applications. To provide mobile users with seamless wireless access and guaranteed quality of service (QoS), it is a trend to integrate UMTS cellular networks and wireless local area networks (WLANs) into heterogeneous networks in next generation all-IP wireless networks. Access network selection and QoS support for different services are the major challenges in integrated UMTS/WLAN networks. In this paper, we propose a novel access selection method to determine which network is more suitable for a mobile user's service request in heterogeneous UMTS and WLAN networks. This method is utility-based and takes into account QoS requirements of applications, network condition and user mobility. Also it introduces a balancing index in order to reduce the utility value of a network if it is heavily loaded. Consequently, the lower selected probability of the heavily loaded network is obtained. Simulation results demonstrate the improved performance of the proposed access selection scheme as compared with the cost-based scheme. It can reduce new blocking and handoff dropping probabilities, as well as number of handoff. Moreover, this scheme achieves a balance between system utilization and network loading while maintaining QoS requirements. Also larger system throughput is achieved.<br/>
期刊：
Journal of Networks,2012年7(2):377-384 ISSN：1796-2056
通讯作者：
Lu, C.(Lcwzm@tom.com)
作者机构：
[Lu, Chuiwei] Computer School, Huangshi Institute of Technology, Huangshi, China;[Hu, Zhengbing] Department of Information Technology, Huazhong Normal University, Wuhan, China
期刊：
Modern Problems of Radio Engineering, Telecommunications and Computer Science - Proceedings of the 11th International Conference, TCSET'2012,2012年:452-453
通讯作者：
Hu, Z.(hzb@mail.ccnu.edu.cn)
作者机构：
[Nimko, Vitalii; Hu, Zhengbing; Bykovyy, Pavlo] Department of Information Technology, Huazhong Normal University, China
期刊：
Applied Mechanics and Materials,2012年145:465-469 ISSN：1660-9336
通讯作者：
Liu, Q.-T.(liuqtang@ccnu.edu.cn)
作者机构：
[Liu, Qing-Tang] Department of Information Technology, Central China Normal University, Wuhan, 430079, China;[Wu, Lin-Jing; Huang, Huan] National Engineering Research Center for E-Learning, Central China Normal University, Wuhan, 430079, China
通讯机构：
[Liu, Q.-T.] D;Department of Information Technology, , Wuhan, 430079, China
会议名称：
1st International Conference on Engineering and Technology Innovation, ICETI 2011
摘要：
Human-Computer Interaction is crucial for Instructional Software. It is significant to make Geometry Instructional Software understand geometric proposition described by natural language and construct geometric figure automatically. However, it is difficult for computer to accurately understand the flexible and variable geometric proposition because of the immaturity of Natural Language Processing Technology. This paper defines a restricted geometric proposition, presents a corresponding comprehension model based on ontology, and designs a matching algorithm for geometric relation pattern, finally transforms the restricted geometric proposition to geometric construction command sequence. The experiment results suggest that the average accuracy of understanding clauses of geometric proposition is almost to 88.9%, and the percentage of constructing correct geometric figure is to 82.5%.
期刊：
International Journal of Advancements in Computing Technology,2012年4(13):62-70 ISSN：2005-8039
通讯作者：
Liu, Q.(liuqtang@mail.ccnu.edu.cn)
作者机构：
[Liu, Qingtang] Department of Information Technology, Central China Normal University, WuHan, Hubei 430079, China;[Wang, Yanli] Department of Educational Science and Technology, Huang Gang Normal University, Huang Gang, Hubei 438000, China;[Cheng, Yun] Department of Information Technology, Central China Normal University, WuHan, Hubei 430079, China, Department of Educational Science and Technology, Huang Gang Normal University, Huang Gang, Hubei 438000, China
通讯机构：
[Liu, Q.] D;Department of Information Technology, , WuHan, Hubei 430079, China
关键词：
FFmpeg;Format conversion;GUI;Open source;OSS
摘要：
Open Source Software (OSS) now is being developed rapidly and increasingly widely used, and has a huge advantage in software development. Unfortunately, a lot of open source software can not be used under Windows directly, which will limit their development and access to a wider range of application. This essay has constructed a porting model for open source software through the analysis of the characteristics of open source software and the actual application requirements, and took FFmpeg for example, a open source software for video and audio processing, to discuss how to apply the porting model and meanwhile developed a multimedia format converter with GUI based on FFmpeg. Then we tested the software and analyzed and compared the porting result. The testing has proved that the porting model for open source software is feasible and usable, with good application effect and has realized the desired objectives. This practice will be great valuable reference for porting and application of open source software.
期刊：
Advances in Information Sciences and Services,2012年4(13):126-134 ISSN：1976-3700
通讯作者：
Liu, Z.(jojo@gmail.com)
作者机构：
[Lu, Wei; Liu, Guanhai; Chen, Mao; Liu, Zheng] National Engineering Research Center of E-learning, Central China Normal University, Wuhan 430079, China
通讯机构：
[Liu, Z.] N;National Engineering Research Center of E-learning, , Wuhan 430079, China
关键词：
3D dynamic geometry system;Dynamic geometry;Parameterized model
摘要：
Currently, there are many two-dimensional Dynamic Geometry System(DGS) which reached a high level of development, while the development of three-dimensional DGS is at its beginning stage and there are only a few 3D DGS existed for solid geometry education, especially in China. These 3D DGS mainly used the plotting module as the core, but it brings some deficiencies such as can't precisely operate and control of figures, geometric and algebraic module can't link closely, the feature of dynamic displaying the changing process is not demonstrate completely. In order to solve these problems and aid the teaching and learning of solid geometry, we proposed and implemented a three dimensional DGS named Dragon3D Sketchpad with a parameterized model which is the innovation compare to the others three-dimensional DGS. In this paper, firstly, it introduced the architecture and the major components of the system. Then, it described the concept and implementation mechanism of parameterized model. At last, it discussed the advantages of parameterized model with representative examples. The results show that geometric objects could be plotted and manipulated easily in three dimensions, the common functions in a DGS such as animation, transformation, locus and iteration are realized for the spatial objects, and the parameterized model can well solve the problems which mentioning above, it means that the Dragon3D Sketchpad is very useful in solid geometry education.
期刊：
Proceedings of 2012 International Conference on Modelling, Identification and Control, ICMIC 2012,2012年:429-432
通讯作者：
Xu, J.(same19781978@163.com)
作者机构：
[Xu Jiangling] Department of Electrical and Electronic Engineering, Wuhan Institute of Shipbuilding Technology, Wuhan City, Hubei Province, China;[zhi-qiu Lei; Zheng huan] Department of Information and Technology, Central China Normal University, China
会议名称：
2012 International Conference on Modelling,Identification and Control(建模、辨别与控制国际会议 ICMIC 2012)
会议时间：
2012-06-24
会议地点：
武汉
会议论文集名称：
2012 International Conference on Modelling,Identification and Control(建模、辨别与控制国际会议 ICMIC 2012)论文集
期刊：
Advances in Information Sciences and Services,2012年4(17):435-441 ISSN：1976-3700
通讯作者：
Liu, Q.(lqt@mail.ccnu.edu.cn)
作者机构：
[Liu, Qingtang; Zhu, Ke] Department of Information Technology, Central China Normal University, China
通讯机构：
[Liu, Q.] D;Department of Information Technology, China
关键词：
Distance education;E-learning;Sakai
摘要：
The changing profile of students, the expectations of business and the capabilities offered by Information and Communication Technologies (ICT) makes it necessary to change teaching practices, particularly in higher education. This paper analyzes students' intention to use Sakai platforms to improve the teaching-learning process. Its main focus is to analyze the use of the Sakai platform by University students in China, investigate the factors that influencing the intention to use it. Understanding the factors influencing the intention to use Sakai will allow us to determine which actions might be carried out to boost its use by University students, to improve both their skills and grades. Our results provide support for a number of relationships in the hypothesized model. Such consideration will help decrease the mismatch between system design and local users' realities, and further facilitate the successful adoption of Sakai in China.
期刊：
International Journal of Digital Content Technology and its Applications,2012年6(21):542-549 ISSN：1975-9339
通讯作者：
Xu, S.(xushun2010@163.com)
作者机构：
[Dai, Zhaoxia; Wang, Huixia] Department of Educational Science and Technology, Huang Gang Normal University, China;[Xu, Shun] Department of Information Technology, Central China Normal University, China
摘要：
In this paper, it proposed overall design, database design and security control design program of Web2.0-based multimedia work management system by demand analysis. The design of multimedia work management system blended into the idea of Web 2.0. It advocated to utilize collective intelligence with network power, and made users a content viewer and manufacturer of system content. System together with user built a exchange platform with harmonious social relations.
期刊：
Proceedings of SPIE - The International Society for Optical Engineering,2012年8349 ISSN：0277-786X
通讯作者：
Zhao, G.(zhaogang@mail.ccnu.edu.cn)
作者机构：
[Zhao, Gang] National Engineering Research Center for E-Learning, Huazhong Normal University, Wuhan, China;[Li, Yangyang; Zhao, Gang; He, Bin; Liu, Qifang] Department of Information Technology, Huazhong Normal University, Wuhan, China
会议名称：
4th International Conference on Machine Vision (ICMV) - Machine Vision, Image Processing and Pattern Analysis
会议时间：
DEC 09-10, 2011
会议地点：
Singapore, SINGAPORE
会议论文集名称：
Proceedings of SPIE
关键词：
video stitching;camera pose estimation;boundary resampling
摘要：
This paper concerns the problem of video stitching automatically in a multi-camera surveillance system. Previous approaches have used multiple calibrated cameras for video mosaic in large scale monitoring application. In this work, we formulate video stitching as a multi-image registration and blending problem, and not all cameras are needed to be calibrated except a few selected master cameras. SURF is used to find matched pairs of image key points from different cameras, and then camera pose is estimated and refined. Homography matrix is employed to calculate overlapping pixels and finally implement boundary resample algorithm to blend images. The result of simulation demonstrates the efficiency of our method.
作者机构：
[易本顺; 凌毓涛] School of Electronic Information, Wuhan Univ., Wuhan, Hubei 430072, China;[吴建斌; 凌毓涛; 瞿少成] Dept. of Information Technology, Central China Normal Univ., Wuhan, Hubei 430079, China
通讯机构：
School of Electronic Information, Wuhan Univ., China
期刊：
Proceedings of SPIE - The International Society for Optical Engineering,2012年8350:587-591 ISSN：0277-786X
通讯作者：
Hu, Yan
作者机构：
[He, Bin; Yang, Yongchao; Hu, Yan; Zhao, Gang; Shen, Guosheng] Huazhong Normal Univ, Natl Engn Res Ctr E Learning, Wuhan 430079, Hubei, Peoples R China.
通讯机构：
[Hu, Yan] H;Huazhong Normal Univ, Natl Engn Res Ctr E Learning, Wuhan 430079, Hubei, Peoples R China.
会议名称：
2010 International Conference on Software and Computing Technology(2010年软件与计算机技术国际会议 ICSCT 2010)
会议时间：
2010-10-17
会议地点：
昆明
会议主办单位：
[Hu, Yan;Yang, Yongchao;Zhao, Gang;He, Bin;Shen, Guosheng] Huazhong Normal Univ, Natl Engn Res Ctr E Learning, Wuhan 430079, Hubei, Peoples R China.
会议论文集名称：
2010 International Conference on Software and Computing Technology(2010年软件与计算机技术国际会议 ICSCT 2010)论文集
关键词：
Model Transformation;Large-scale three-Dimensional Scene model;Model Optimization;Data loss;Realtime rendering
摘要：
During the simulation process of real-time three-dimensional scene, the popular modeling software and the real-time rendering platform are not compatible. The common solution is to create three-dimensional scene model by using modeling software and then transform the format supported by rendering platform. This paper takes digital campus scene simulation as an example, analyzes and solves the problems of surface loss; texture distortion and loss; model flicker and so on during the transformation from 3Ds Max to MultiGen Creator. Besides, it proposes the optimization strategy of model which is transformed. The operation results show that this strategy is a good solution to all kinds of problems existing in transformation and it can speed up the rendering speed of the model.
作者机构：
[沈欣; 李德仁] State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, 129 Luoyu Road, Wuhan 430079, China;[姚璜] Department of Information Technology, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
通讯机构：
State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, 129 Luoyu Road, China
摘要：
Direct compression of original map can’t meet users' request on image quality. In order to harmonize image quality and bandwidth of wireless transmission, a protect scheme of UEP (Unequal Error Protection) with JEPG 2000 coder and Channel coding based on RCPC (Rate Compatible Punctured Convolutional) was proposed to improve ROI-based image quality. Firstly, ROI (region-of-interest) was extracted from Saliency Map based on visual attention model. Secondly, ROI and BG (background region) in image which transmitted in wireless channel respectively, were protected by different encoding bit rates and RCPC Code rates. Finally, the PSNR of image was calculated after transmitting in wireless channel using computer simulations. Experimental results show that ROI-based images with high-level protection get a higher quality than image without ROI while not increasing bandwidth.
期刊：
The Journal of Information and Computational Science,2012年9(12):3421-3429 ISSN：1548-7741
通讯作者：
Kong, W.(byta100@yahoo.cn)
作者机构：
[Kong, Weiliang; Han, Shuyun; Yang, Zhongkai; Liu, Qingtang] National Engineering Research Center for Elearning, Central China Normal University, Wuhan 430079, China
通讯机构：
National Engineering Research Center for Elearning, Central China Normal University, China
