作者：
Cai, Jin;Yang, Harrison Hao*;Li, Yanhong;MacLeod, Jason
期刊：
Lecture Notes in Computer Science,2017年10309:379-386 ISSN：0302-9743
通讯作者：
Yang, Harrison Hao
作者机构：
[Cai, Jin; Li, Yanhong] Cent China Normal Univ, Collaborat & Innovat Ctr Educ Technol, Wuhan, Hubei, Peoples R China.;[MacLeod, Jason; Yang, Harrison Hao] Cent China Normal Univ, Sch Educ Informat Technol, Wuhan, Hubei, Peoples R China.;[Yang, Harrison Hao] SUNY Coll Oswego, Sch Educ, Oswego, NY 13126 USA.;[Cai, Jin] Hubei Univ Educ, Coll Comp, Wuhan, Hubei, Peoples R China.
通讯机构：
[Yang, Harrison Hao] C;[Yang, Harrison Hao] S;Cent China Normal Univ, Sch Educ Informat Technol, Wuhan, Hubei, Peoples R China.;SUNY Coll Oswego, Sch Educ, Oswego, NY 13126 USA.
会议名称：
10th International Conference on Blended Learning (ICBL)
摘要：
The purpose of this study is to provide an overview of the remote synchronous classroom, which is a newly developed and unique blended learning method in the Chinese K-12 education system. The study consists of three main parts: the description and comparison of key synchronous learning, the review of innovative developments and the modern significance of the remote synchronous classroom in China, and key issues that must be addressed to improve implementation of the remote synchronous classroom.
期刊：
IEEE Transactions on Aerospace and Electronic Systems,2016年52(1):60-72 ISSN：0018-9251
通讯作者：
Zhou, Xin
作者机构：
[Deng, He; Ye, Chaohui; Liu, Maili; Zhou, Xin; Sun, Xianping] Chinese Acad Sci, Wuhan Inst Phys & Math, Natl Ctr Magnet Resonance Wuhan, State Key Lab Magnet Resonance & Atom & Mol Phys, 30 West Xiaohongshan, Wuhan 430071, Peoples R China.;[Deng, He] Cent China Normal Univ, Dept Informat Technol, 152 Luoyu Rd, Wuhan 430079, Peoples R China.
通讯机构：
[Zhou, Xin] C;Chinese Acad Sci, Wuhan Inst Phys & Math, Natl Ctr Magnet Resonance Wuhan, State Key Lab Magnet Resonance & Atom & Mol Phys, 30 West Xiaohongshan, Wuhan 430071, Peoples R China.
摘要：
We propose an effective small-target detection approach based on weighted image entropy. The approach weights the local entropy measure by the multiscale grayscale difference followed by an adaptive threshold operation, which aims to improve the signal-to-noise ratio for cases in which jamming objects in the scene have similar thermal intensity measure with respect to the background as small target. The detection capability of the proposed approach has been validated on six real sequences, and the results demonstrate its significance and improvement.
作者：
Zhu, Sha;Qiu, Hongjing;Yang, Harrison Hao*;Zhang, Yi（张屹）
期刊：
Lecture Notes in Computer Science,2016年9757:258-268 ISSN：0302-9743
通讯作者：
Yang, Harrison Hao
作者机构：
[Zhu, Sha] Cent China Normal Univ, Natl Engn Res Ctr E Learning, Wuhan 430079, Peoples R China.;[Zhang, Yi; Qiu, Hongjing; Yang, Harrison Hao] Cent China Normal Univ, Sch Educ Informat Technol, Wuhan 430079, Peoples R China.;[Yang, Harrison Hao] SUNY Coll Oswego, Sch Educ, Oswego, NY 13126 USA.
通讯机构：
[Yang, Harrison Hao] C;[Yang, Harrison Hao] S;Cent China Normal Univ, Sch Educ Informat Technol, Wuhan 430079, Peoples R China.;SUNY Coll Oswego, Sch Educ, Oswego, NY 13126 USA.
会议名称：
9th International Conference on Blended Learning (ICBL)
会议时间：
JUL 19-21, 2016
会议地点：
Peking Univ, Beijing, PEOPLES R CHINA
会议主办单位：
Peking Univ
会议论文集名称：
Lecture Notes in Computer Science
关键词：
Mobile devices;Integration;Influencing factors;K-12 teachers
摘要：
The purpose of this study was to explore the key factors influencing K-12 teachers’ intention of mobile devices integration in teaching. A structural model of the factors influencing teachers’ intention to integrate mobile devices in teaching was proposed based on an extensive literature review. Based on the proposed model, a survey was administered which included six categories: (1) Attitude and technology belief; (2) Mobile-based pedagogical knowledge; (3) Mobile device skills; (4) Institutional support; (5) Self-efficacy of mobile-based teaching; and (6) Intention to integrate mobile devices. Partial Least Squares (PLS) were employed to validate the proposed model and hypotheses, using the data collected from 22 primary school teachers via surveys. The results indicated that teachers’ attitude and technology belief, and self-efficacy of mobile-based teaching had significant impacts on their intention to integrate mobile devices in teaching. Meanwhile, teachers’ mobile device skills strongly influenced their self-efficacy of mobile-based teaching. Finally, the authors provided suggestions for teachers, school leaders, and researchers.
关键词：
Cloudy-sky background;infrared image;small target detection;weighted local difference measure (WLDM)
摘要：
Against an intricate infrared cloudy-sky background, jamming objects such as the edges of clouds in the scene have a similar thermal intensity measure with respect to the background as small targets. This may cause high false alarm rates and low probabilities of detection according to conventional small target detection methods. In this paper, we propose a weighted local difference measure (WLDM)-based scheme for the detection of small targets against various complex cloudy-sky backgrounds. Initially, a WLDM map is achieved to simultaneously enhance targets and suppress background clutters and noise. In this way, the true targets can be easily separated from jamming objects. After that, a simple adaptive threshold is used to segment the targets. More than 460 infrared small target images against diverse intricate cloudy-sky backgrounds were utilized to validate the detection capability of the WLDM-based method. Experimental results demonstrate that the proposed algorithm not only works more robustly for different cloudy-sky backgrounds, target movements, and signal-to-clutter ratio (SCR) values but also has a better performance with regard to the detection accuracy, in comparison to traditional baseline methods. In particular, the proposed method is able to significantly improve SCR values of the images.
关键词：
3D reconstruction;Depth information;RGB information
摘要：
Dense 3D reconstruction has important applications in many fields. The existing depth information based methods are typically constrained in their effective camera-object distance which should be from 0.4 m to 4 m. We present a novel method that can achieve a more accurate dense 3D reconstruction with an RGB-D camera when the distance between the camera and object is less than 0.4 m, which enlarges the application range. Our approach combines a depth information based 3D model method with a RGB information based method to refine the reconstruction results when the camera fails to acquire the correct depth information. Rich RGB information captured from a color camera along with feature detection and triangulation methods are used to obtain accurate camera poses and 3D points when the camera is close to the object. Compared with the reconstruction results obtained from depth information only, quantitative experimental results show that our method is more effective, particularly when the camera is close to the object in the scene. (C) 2015 Elsevier B.V. All rights reserved.
摘要：
Small infrared (IR) target detection is an important and challenging issue in IR target tracking system. In this paper, a patch ordering-based method is proposed for small IR target detection in an image with complicated background. Inspired by the contrast mechanism of human vision system, a patch ordering-based contrast measure (POCM) is designed to deal with the input image, which cannot only suppress the background noise and clutter but also enhance the targets significantly. In this way, POCM can increase the contrast ratio between target and background. This leads to higher Signal Clutter Ratio (SCR). Then the true target can be detected by applying simple adaptive thresholding method. The experimental results on two sequences show that the proposed method can efficiently detect small IR target from heavy clutter.
期刊：
Lecture Notes in Computer Science,2016年9757:128-138 ISSN：0302-9743
通讯作者：
Luo, Heng
作者机构：
[Zuo, Mingzhang; Luo, Heng] Cent China Normal Univ, Sch Educ Informat Technol, Wuhan 430079, Peoples R China.;[Zuo, Mingzhang; Luo, Heng] Cent China Normal Univ, Collaborat & Innovat Ctr Educ Technol, Wuhan 430079, Peoples R China.;[Alley, Richard; Millet, April] Penn State Univ, Coll Earth & Mineral Sci, University Pk, PA 16802 USA.
通讯机构：
[Luo, Heng] C;Cent China Normal Univ, Sch Educ Informat Technol, Wuhan 430079, Peoples R China.;Cent China Normal Univ, Collaborat & Innovat Ctr Educ Technol, Wuhan 430079, Peoples R China.
会议名称：
9th International Conference on Blended Learning (ICBL)
摘要：
This case study provides a contextualized description of the various ethical issues faced by an instructional designer in the design and delivery of a MOOC. The defined characteristics of MOOCs in general (e.g., massive enrollment, open access, diverse student population) and the uniqueness of specific cases require a set of ethical decisions to be made for dealing with issues such as bias, fairness, copyright, and disruptions. Those decisions, along with their rationale and effects are elaborated and discussed in this study from the aspects of theoretical assumptions, pragmatic considerations, and empirical evidence. Based on the case study findings, this paper concludes with a list of informed advices and learned lessons to guide instructional designers and instructors to deal with similar ethical issues in future MOOCs.
期刊：
Journal of Computing Science and Engineering,2016年10(4):103-110 ISSN：1976-4677
通讯作者：
Huang, Huan(huanghuan@mail.scuec.edu.cn)
作者机构：
[Yuan, Shuai] National Engineering Research Center for E-Learning, Central China Normal University, Wuhan, China;[Wu, Linjing] School of Educational Information Technology, Central China Normal University, Wuhan, China;[Huang, Huan] School of Education, South Central University for Nationalities, Wuhan, China
通讯机构：
School of Education, South Central University for Nationalities, Wuhan, China
作者机构：
[Huang Yao; He Deng; Yan-Tao Wei] Department of Information Technology, Central China Normal University, Wuhan, 430079, China;[Ji-Dong Chen] Shaoxing Testing Institute of Quality and Technical Supervision, Shaoxing, 312071, China;[He Deng] Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430079, China
通讯机构：
[Yan-Tao Wei] D;Department of Information Technology, Central China Normal University, Wuhan, China
关键词：
Dim target detection;information entropy;Parzen window;region growing;visual mechanism
摘要：
People attach great importance to high detection probability and low false alarm probability for infrared dim target detection. Consequently, a novel approach is proposed based on inverted local information entropy map and the improved region growing technique. The idea originates from the intrinsic property of natural image, the visual mechanism of flying insects and the information entropy theory. Besides qualitative analyses, other methods including the norms of local signal-to-background ratio, local signal-to-noise ratio, region non-uniformity, single-frame detection probability and single-frame false alarm probability are adopted to quantitatively evaluate the proposed approach. Both qualitative and quantitative comparisons confirm the validity and efficiency of the proposed approach.
期刊：
IEEE Transactions on Vehicular Technology,2015年64(10):4701-4711 ISSN：0018-9545
通讯作者：
Liao, Shengbin
作者机构：
[Liao, Shengbin] Huazhong Normal Univ, Natl Engn Ctr E Learning, Wuhan 430079, Peoples R China.;[Zhang, Qingfu] City Univ Hong Kong, Sch Comp Sci, Hong Kong, Hong Kong, Peoples R China.
通讯机构：
[Liao, Shengbin] H;Huazhong Normal Univ, Natl Engn Ctr E Learning, Wuhan 430079, Peoples R China.
摘要：
The correct relationships between real and virtual objects are of utmost importance to a realistic augmented reality system, in which the occlusion handling method should be able to estimate the spatial relationships between real and virtual objects, as well as handle the mutual occlusion automatically in real-time. To accomplish the above tasks simultaneously, we propose a novel occlusion handling method based on 3D reconstruction, which consists of offline stage and online stage. In the offline stage, we get the depth map of the real scene using a low cost RGB-D camera. Then the 3D coordinate of each point in the global coordinate system are obtained and will be used in the online occlusion handling stage. In the online stage, we design a GPU based 3D point clouds alignment method by using point to tangent plane distance as error metric to accelerate the convergence speed and reduce the iterations. The correct relationships between real and virtual objects are then obtained automatically by comparing each pixel's Z coordinate value of real objects with that of virtual objects in a smaller region to achieve real-time performance. More specifically, we can judge and handle the mutual occlusion without human interactivity in real time, and experimental results prove its effectiveness. The correct relationships between real and virtual objects are of utmost importance to a realistic augmented reality system, in which the occlusion handling method should be able to estimate the spatial relationships between real and virtual objects, as well as handle the mutual occlusion automatically in real-time. To accomplish the above tasks simultaneously, we propose a novel occlusion handling method based on 3D reconstruction, which consists of offline stage and online stage. In the offline stage, we get the depth map of the real scene using a low cost RGB-D camera. Then the 3D coordinate of each point in the global coordinate system are obtained and will be used in the online occlusion handling stage. In the online stage, we design a GPU based 3D point clouds alignment method by using point to tangent plane distance as error metric to accelerate the convergence speed and reduce the iterations. The correct relationships between real and virtual objects are then obtained automatically by comparing each pixel's Z coordinate value of real objects with that of virtual objects in a smaller region to achieve real-time performance. More specifically, we can judge and handle the mutual occlusion without human interactivity in real time, and experimental results prove its effectiveness.
摘要：
In view of the problem of the low efficiency in traditional classroom teaching due to the limitation in time and space, an exploration which combines real classroom with virtual classroom in hybrid learning was proposed. We chose the teaching of a software engineering course and used starC as the teaching support tool for analysis. In our study, the teaching process was divided into several teaching units, and each teaching unit was further divided into several activity units. The content was organized in the form of topicalities, where students are allowed to choose the learning content according to their study plans and preferences. Through the questionnaire survey which includes the indicators of participation and satisfaction among the students on both traditional learning and hybrid learning, it is found that the students on hybrid learning have higher participation and satisfaction than that on traditional learning. This indicated that hybrid learning could effectively improve teaching effectiveness.
期刊：
Lecture Notes in Computer Science,2015年9167:349-358 ISSN：0302-9743
通讯作者：
Wu, Linjing
作者机构：
[Qin, Jiaying; Guo, Chune; Hu, Jian; Liu, Qingtang; Wu, Linjing] Cent China Normal Univ, Sch Educ Informat Technol, Wuhan, Hubei, Peoples R China.;[Liu, Qingtang; Wu, Linjing] Cent China Normal Univ, Minist Educ, Key Lab Adolescent Cyberpsychol & Behav, Wuhan, Hubei, Peoples R China.;[Liu, Qingtang; Wu, Linjing] Cent China Normal Univ, Social Network & Its Informat Serv Collaborat Inn, Wuhan, Hubei, Peoples R China.
通讯机构：
[Wu, Linjing] C;Cent China Normal Univ, Sch Educ Informat Technol, Wuhan, Hubei, Peoples R China.
会议名称：
International Conference on Hybrid Learning
会议时间：
20150727-29
会议地点：
Wuhan
会议主办单位：
Cent China Normal Univ
会议论文集名称：
Hybrid learning: Innovation in Educational Practices, 8th International Conference, ICHL 2015, Wuhan, China, July 27-29, 2015, Proceedings
关键词：
E-learning;Resource organization;Resource bundle;Online learning system
摘要：
The organization of learning resources is an important part of an online learning system. However, the methods which we commonly use in recent years, such as organizing resources manually and single type resource bundle, cannot meet the requirements of online resources organization. We propose a micro-resources organization and generation method based on mixed resource bundle. This method contains three parts which can respectively realize the pack, analysis and layout of online learning resources. In this paper, we give the details of how these three parts are working. Then, we give an example of English micro-content resource bundle. It proves that our method can work very well in English online learning. In the next phase, we will extend our method to other subjects.
