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Multi-features Based Approach for Moving Shadow Detection 被引量:4
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作者 周宁 周曼丽 +1 位作者 许毅平 方宝红 《Journal of Donghua University(English Edition)》 EI CAS 2004年第6期76-80,共5页
In the video-based surveillance application, moving shadows can affect the correct localization and detection of moving objects. This paper aims to present a method for shadow detection and suppression used for moving... In the video-based surveillance application, moving shadows can affect the correct localization and detection of moving objects. This paper aims to present a method for shadow detection and suppression used for moving visual object detection. The major novelty of the shadow suppression is the integration of several features including photometric invariant color feature, motion edge feature, and spatial feature etc. By modifying process for false shadow detected, the averaging detection rate of moving object reaches above 90% in the test of Hall-Monitor sequence. 展开更多
关键词 MOVING SHADOW detection multi - features MOVING OBJECT DETECTION
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The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) 被引量:41
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作者 Xiang-Qun Cui Yong-Heng Zhao +52 位作者 Yao-Quan Chu Guo-Ping Li Qi Li Li-Ping Zhang Hong-Jun Su Zheng-Qiu Yao Ya-Nan Wang Xiao-Zheng Xing Xin-Nan Li Yong-Tian Zhu Gang Wang Bo-Zhong Gu A-Li Luo Xin-Qi Xu Zhen-Chao Zhang Gen-Rong Liu Hao-Tong Zhang De-Hua Yang Shu-Yun Cao Hai-Yuan Chen Jian-Jun Chen Kun-Xin Chen Ying Chen Jia-Ru Chu Lei Feng Xue-Fei Gong Yong-Hui Hou Hong-Zhuan Hu Ning-Sheng Hu Zhong-Wen Hu Lei Jia Fang-Hua Jiang Xiang Jiang Zi-Bo Jiang Ge Jin Ai-Hua Li Yan Li Ye-Ping Li Guan-QunLiu Zhi-Gang Liu Huo-Ming Shi Zheng-Hong Tang Qing-Sheng Tao Xiang-Yan Yuan Chao Zhai Jing Zhang Yan-Xia Zhang Yong Zhang Ming Zhao Fang Zhou Guo-Hua Zhou Jie Zhu Si-Cheng Zou 《Research in Astronomy and Astrophysics》 SCIE CAS CSCD 2012年第9期1197-1242,共46页
The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST, also called the Guo Shou Jing Telescope) is a special reflecting Schmidt telescope. LAMOST’s special design allows both a large aperture (effecti... The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST, also called the Guo Shou Jing Telescope) is a special reflecting Schmidt telescope. LAMOST’s special design allows both a large aperture (effective aperture of 3.6 m–4.9 m) and a wide field of view (FOV) (5°). It has an innovative active reflecting Schmidt configuration which continuously changes the mirror’s surface that adjusts during the observation process and combines thin deformable mirror active optics with segmented active optics. Its primary mirror (6.67m×6.05 m) and active Schmidt mirror (5.74m×4.40 m) are both segmented, and composed of 37 and 24 hexagonal sub-mirrors respectively. By using a parallel controllable fiber positioning technique, the focal surface of 1.75 m in diameter can accommodate 4000 optical fibers. Also, LAMOST has 16 spectrographs with 32 CCD cameras. LAMOST will be the telescope with the highest rate of spectral acquisition. As a national large scientific project, the LAMOST project was formally proposed in 1996, and approved by the Chinese government in 1997. The construction started in 2001, was completed in 2008 and passed the official acceptance in June 2009. The LAMOST pilot survey was started in October 2011 and the spectroscopic survey will launch in September 2012. Up to now, LAMOST has released more than 480 000 spectra of objects. LAMOST will make an important contribution to the study of the large-scale structure of the Universe, structure and evolution of the Galaxy, and cross-identification of multiwaveband properties in celestial objects. 展开更多
关键词 techniques: wide field telescope - active optics - multi fiber - spectroscopy survey - data reduction
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A Comparative Study of Acute Hemodynamic Effects of Multi -site Cardiac Pacing in patients with cardiac function NYHA class ⅠtoⅡ without bundle branch block 被引量:2
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作者 朱参战 崔长琮 +5 位作者 张全发 薛小临 刘维维 刘引会 《South China Journal of Cardiology》 CAS 2001年第2期101-105,共5页
Objective To compare the acute hemodynamic effects of five different pacing modes in patients with cardiac function NYHA class Ⅰ to Ⅱ without bundle branch block (BBB). Methods This study included 12 patients (SSS ... Objective To compare the acute hemodynamic effects of five different pacing modes in patients with cardiac function NYHA class Ⅰ to Ⅱ without bundle branch block (BBB). Methods This study included 12 patients (SSS 7, Ⅲ°AVB 5) undergoing pacemaker implantation. Right ventricular apex (RVA), right ventricular outflow tract (RVOT), right ventricular bifocal (RV-Bi), left ventricular base (LVB) and bi -ventricular (Bi-Ⅴ) pacing at 60 -80 ppm were done in VVI mode prior to implantation of DDD pacemaker. The cardiac index (CI), mean pulmonary artery pressure (mPAP) and pulmonary capillary wedge pressure (PCWP) were measured with Swan - Ganz thermodilution catheter after 5 minutes of each pacing mode. Results (1) Comparing to pacing at RVA (CI: 2. 41± 0. 38 L/min per m2, PCWP: 16. 7 ±3.3 mmHg), the CI increased and the PCWP decreased significantly in pacing at RVOT(CI: 2. 63 ± 0.46, PCWP: 13. 8±2. 3), LVB(CI: 2. 78±0.52, PCWP: 14. 4±3.1), RV-Bi(CI: 2. 83±0.57, PCWP: 12. 8± 2. 5) and Bi -Ⅴ pacing (CI: 2. 94± 0.60, PCWP: 12. 7±2. 5), P < 0. 01, respectively. (2) The CI of RV-Bi and Bi-Ⅴ pacing was higher than that of RVOT and LVB pacing, the PCWP was lower, P < 0. 05, respectively. (3) There was no significant difference between RV - Bi pacing and Bi-Ⅴ pacing in CI and PCWP. Conclusion There is no significant difference between RV - Bi pacing and Bi -V pacing in the acute hemodynamic effects; however,dual - site pacing is much better than single site pacing in that aspect for patients with cardiac function NYHA class Ⅰ to Ⅱ without BBB. Among single site pacing, the RVOT and LVB pacing is better than RVA pacing in cardiac function. 展开更多
关键词 multi - site cardiac pacingHemodynamics
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Research on A Master - slave Multi - microcomputers Control System for Hollow Spindle Fancy Yarn Spinning Machine
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作者 李志蜂 陈子展 阵瑞琪 《Journal of China Textile University(English Edition)》 EI CAS 1999年第1期49-52,共4页
In this paper, a successfully studied and developed master - slave muld - microcomputers control system based on PC - BUS for hollow spindle fancy yarn spinning machine, mainly Its overall scheme, software and hardwar... In this paper, a successfully studied and developed master - slave muld - microcomputers control system based on PC - BUS for hollow spindle fancy yarn spinning machine, mainly Its overall scheme, software and hardware construction, is introduced. Spinning experiments show that the system achieves satisfactory result. This system can solve the diftkultles of mechatronical fusion between domestic hollow splndk fancy yarn spuming muchine and its microcomputer control technology. 展开更多
关键词 hollow SPINDLE FANCY YAM spinning machine mechatrvnical fusion MASTER - SLAVE multi - microcomputers control system PC - BUS.
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On the Representation of Multi-layer Woven Structure
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作者 易洪雷 丁辛 《Journal of China Textile University(English Edition)》 EI CAS 1999年第3期14-16,共3页
A quantitative method is developed to identify the structures of multi-layer woven fabric in this study. Six structural parameters are selected to represent the fabric structure. With some design criteria for the rein... A quantitative method is developed to identify the structures of multi-layer woven fabric in this study. Six structural parameters are selected to represent the fabric structure. With some design criteria for the reinforcement of textile composites, the relationships among the structural parameters are derived for different binding patterns of the fabric structure. The conditions, which meet the requirements of structural cell stability,are also discussed. 展开更多
关键词 multi - layer woven FABRIC structural parame-ter BINDING PATTERN TEXTILE composite .
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Computer-aided Pattern Design of Multi-bar Warp Knitted Fabrics
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作者 李炜 《Journal of China Textile University(English Edition)》 EI CAS 2000年第1期85-87,共3页
To meet the development trend of multi-bar warp knit-ting machine towards high-speed,advanced technologyand computer control and the requirements of variousproducts with small quantity,there are many researcheson the ... To meet the development trend of multi-bar warp knit-ting machine towards high-speed,advanced technologyand computer control and the requirements of variousproducts with small quantity,there are many researcheson the computer-aided pattern design of multi-barwarp knitted fabrics.In terms of the special propertiesof the computer-aided pattern design of multi-barwarp knitted fabrics,the Object Oriented Program(OOP)programming-Object Windows class Library(OWL)programming is selected.According to thecharacters of the OWL programming,various functionsare defined.Pattern design and technical parameters canbe output,which offers a great convenience for the fac-tory. 展开更多
关键词 multi - bar WARP KNITTED fabric computer -aided PATTERN design PATTERN Object Windows class Library (OWL) programming.
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MODS: A Novel Metaheuristic of Deterministic Swapping for the Multi-Objective Optimization of Combinatorials Problems
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作者 Elias David Nifio Ruiz Carlos Julio Ardila Hemandez +2 位作者 Daladier Jabba Molinares Agustin Barrios Sarmiento Yezid Donoso Meisel 《Computer Technology and Application》 2011年第4期280-292,共13页
This paper states a new metaheuristic based on Deterministic Finite Automata (DFA) for the multi - objective optimization of combinatorial problems. First, a new DFA named Multi - Objective Deterministic Finite Auto... This paper states a new metaheuristic based on Deterministic Finite Automata (DFA) for the multi - objective optimization of combinatorial problems. First, a new DFA named Multi - Objective Deterministic Finite Automata (MDFA) is defined. MDFA allows the representation of the feasible solutions space of combinatorial problems. Second, it is defined and implemented a metaheuritic based on MDFA theory. It is named Metaheuristic of Deterministic Swapping (MODS). MODS is a local search strategy that works using a MDFA. Due to this, MODS never take into account unfeasible solutions. Hence, it is not necessary to verify the problem constraints for a new solution found. Lastly, MODS is tested using well know instances of the Bi-Objective Traveling Salesman Problem (TSP) from TSPLIB. Its results were compared with eight Ant Colony inspired algorithms and two Genetic algorithms taken from the specialized literature. The comparison was made using metrics such as Spacing, Generational Distance, Inverse Generational Distance and No-Dominated Generation Vectors. In every case, the MODS results on the metrics were always better and in some of those cases, the superiority was 100%. 展开更多
关键词 METAHEURISTIC deterministic finite automata combinatorial problem multi - objective optimization metrics.
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The New Development for Teaching Foreign Language-Combination of Traditional Teaching with Modern Multi-Media Methods
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作者 李丰芮 《海外英语》 2013年第4X期96-97,共2页
With the development of society and economy,more and more talents capable persons are badly needed in the world.Under the influence of traditional English teaching mode,most English learners can only read and write.Th... With the development of society and economy,more and more talents capable persons are badly needed in the world.Under the influence of traditional English teaching mode,most English learners can only read and write.They are usually called "deaf-mutes".Therefore,traditional English teaching mode isn't satisfied by the teachers and received greatly challenged.Due to applying multimedia to English teaching could create more authentic language environment for the learners,which enables them to communicate in English in real-life situations.At present,the multi-media approach is the most popular language teaching method in the world.The most effective way to develop the teaching is combine multimedia with the traditional methods.This is of special significance to English teaching and make the English teaching receiving the best effect. 展开更多
关键词 traditional TEACHING MODERN multi-MEDIA audio-visu
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基于WC-C-R学习资源推荐的研究 被引量:1
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作者 卢修元 周竹荣 奚晓霞 《计算机工程与设计》 CSCD 北大核心 2006年第23期4461-4464,共4页
基于资源的学习已成为远程教育的一种重要的学习方式,网络课件和资源库是远程教育环境下两种重要的学习资源。为提高基于资源的学习效率,在“网络课件-概念图-学习资源库”三层模型研究的基础上,提出基于知识的资源推荐,并通过多Agent... 基于资源的学习已成为远程教育的一种重要的学习方式,网络课件和资源库是远程教育环境下两种重要的学习资源。为提高基于资源的学习效率,在“网络课件-概念图-学习资源库”三层模型研究的基础上,提出基于知识的资源推荐,并通过多Agent系统实现了在WC-C-R模型上进行资源推荐。实验证明,通过资源推荐,有助于提高学生的学习效率。 展开更多
关键词 网络课件 基于资源的学习 资源库 概念图 MAS
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Pressure Gradient Force,Saffman Lift,and Magnus Lift on the Fiber-like Particle in Fluid 被引量:5
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作者 朱泽飞 林建忠 《Journal of China Textile University(English Edition)》 EI CAS 2000年第2期23-27,共5页
Flher-like particle suspensions are common in both na-ture and industry, but there is little work reported on it.The forces acting on the fiber - like particle in fluid arestudied in this paper, and the Magnus lift, S... Flher-like particle suspensions are common in both na-ture and industry, but there is little work reported on it.The forces acting on the fiber - like particle in fluid arestudied in this paper, and the Magnus lift, Saffman lift,pressure gradient force, and then the dynamics modelhave been received. The numerical study of the simpleshear flow past the cylinders shows that the particles ’motion is controlled by the vortex. 展开更多
关键词 multi - phase FLUID FIBER - LIKE PARTICLE FORCE analysis
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基于Internet的课件信息发现和收集Agent的研究 被引量:14
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作者 张灵玲 周文辉 +5 位作者 韩耀伟 李俊 潘金贵 三枝武男 坂上修二 奥山明 《计算机研究与发展》 EI CSCD 北大核心 1999年第4期465-471,共7页
文中介绍一个基于Internet的信息检索系统:DOLTRI-Agent.DOLTRI-Agent用于从Internet上发现和收集用于远程开放教学(distanceandopenlearning,DOL)中进行课件... 文中介绍一个基于Internet的信息检索系统:DOLTRI-Agent.DOLTRI-Agent用于从Internet上发现和收集用于远程开放教学(distanceandopenlearning,DOL)中进行课件设计的教材信息.DOLTRI-Agent采用多A-gent(multi-agent)体系结构,能够根据用户的需要主动、智能和协作地从Internet上各种信息资源(如数据库,WWW服务器等)处发现和收集教材信息,并对搜集到的教材信息进行管理和维护.文中主要针对Agent的协作性、互操作性和运行环境讨论DOLTRI-Agent提出的解决方案. 展开更多
关键词 远程开放教学 课件 多智能体 信息发现 Internet
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《篮球3人裁判法》CAI多媒体教学课件的研制 被引量:5
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作者 梁建迎 杨鹏飞 +2 位作者 凌刚 王凤妹 王晓刚 《武汉体育学院学报》 CSSCI 北大核心 2004年第2期116-118,共3页
《篮球3人裁判法》CAI多媒体教学课件运用多种媒体进行现场拍摄、制作,在计算机上制作动画,以及编辑合成。在实践中进行了两次教学实验,同时进行了大样本的问卷调查,检验其效度。
关键词 篮球 3人裁判法 多媒体 课件 CAI
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多媒体教学课件在体育教学中的应用 被引量:10
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作者 李立昌 安明林 《武汉体育学院学报》 CSSCI 北大核心 2003年第6期114-116,共3页
论述了多媒体教学在教学中的应用优势,讨论了多媒体教学课件设计编制总的思路及要求,分析了课件设计中存在的不足并提出了相应的改进措施。
关键词 多媒体教学 教学课件 课件设计
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基于包装工程课程群的多媒体课件开发 被引量:3
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作者 辛舟 龚俊 +1 位作者 侯运丰 李文辉 《包装工程》 CAS CSCD 北大核心 2004年第3期194-195,共2页
结合包装工程专业课程的特点 ,开发包装工程专业课程群多媒体课件是十分必要的 ,以演示型和启发式教学方式作为多媒体课件的开发思路 ,选择Authorware、PowerPoint、Flash5、Delphi、PhotoShop为制作工具 ,构成以课程群为系统的资源共... 结合包装工程专业课程的特点 ,开发包装工程专业课程群多媒体课件是十分必要的 ,以演示型和启发式教学方式作为多媒体课件的开发思路 ,选择Authorware、PowerPoint、Flash5、Delphi、PhotoShop为制作工具 ,构成以课程群为系统的资源共享平台。 展开更多
关键词 包装工程 课程群 课件 多媒体 开发思路 总体框架
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工程图学计算机辅助教学实践与思考 被引量:17
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作者 王建华 郝育新 刘令涛 《图学学报》 CSCD 北大核心 2012年第6期116-120,共5页
随着计算机技术的迅猛发展和工程图学课程教学改革的深入开展,计算机辅助教学(CAI)已经成为最重要的现代教学手段之一,其在课堂教学的应用已受到社会各界的普遍关注。论文通过对工程图学计算机辅助教学的实践,分析其利与弊,提出了一些... 随着计算机技术的迅猛发展和工程图学课程教学改革的深入开展,计算机辅助教学(CAI)已经成为最重要的现代教学手段之一,其在课堂教学的应用已受到社会各界的普遍关注。论文通过对工程图学计算机辅助教学的实践,分析其利与弊,提出了一些合理使用CAI教学的方法和认识。 展开更多
关键词 工程图学 计算机辅助教学 多媒体课件 教学实践
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体育多媒体课件中素材的准备技巧 被引量:5
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作者 董德平 王玉珍 钟全宏 《西北师范大学学报(自然科学版)》 CAS 2007年第1期107-109,共3页
讨论了体育课件开发所必需的文本、图形图像、音频、视频、动画等多媒体素材应具备的特点,详细阐述了在多媒体课件开发中对媒体素材的获取、选用及处理方法.
关键词 体育多媒体课件 多媒体素材 准备技巧
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对高等学校多媒体教学现状的思考 被引量:20
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作者 陈莹 刘宇航 王奕娇 《东北农业大学学报(社会科学版)》 2007年第6期89-90,共2页
多媒体教学作为一种新型的教学手段以其明显的特点及优势已广泛运用于教学领域中,它对提高教学质量起到了良好的效果。但是目前,多媒体教学在许多方面仍然存在不足,需要引起我们的注意并加以改进,使多媒体教学的优势能更充分、更准确地... 多媒体教学作为一种新型的教学手段以其明显的特点及优势已广泛运用于教学领域中,它对提高教学质量起到了良好的效果。但是目前,多媒体教学在许多方面仍然存在不足,需要引起我们的注意并加以改进,使多媒体教学的优势能更充分、更准确地发挥出来。 展开更多
关键词 多媒体教学 传统教学 课件
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总氮含量分析方法比较及黑龙江典型淡水养殖池塘和自然水域总氮含量的变化 被引量:4
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作者 黄丽 覃东立 +4 位作者 吴松 陈中祥 高磊 黄晓丽 王鹏 《水产学杂志》 CAS 北大核心 2018年第4期37-42,共6页
应用Multi N/C2100S分析仪与紫外-可见分光光度计对1个有证标准样品和6个实际水样总氮含量进行对比实验,予以验证。结果表明:两种仪器对已知浓度的有证标准样品测得的平均值接近真值,RSD<1%、相对误差<5%,结果准确度和精密度无显... 应用Multi N/C2100S分析仪与紫外-可见分光光度计对1个有证标准样品和6个实际水样总氮含量进行对比实验,予以验证。结果表明:两种仪器对已知浓度的有证标准样品测得的平均值接近真值,RSD<1%、相对误差<5%,结果准确度和精密度无显著差异。Multi N/C2100S分析仪可以高效、快速批量测定。5个月中4次监测6个实际水样总氮含量的结果为:白鱼泡水体中TN含量无显著变化;宾县1~#和3~#池塘水体含量逐月升高;5月稻田TN含量明显偏高,可能是水稻生长施肥所致;7月松花江水样TN含量高于其他月份,可能受养殖密度、模式、天气、投饵量、施肥量及周边农作物施药量的影响。 展开更多
关键词 总氮(TN) 紫外-可见分光光度计 multi N/C2100S分析仪 淡水养殖池塘 自然水域
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物理化学实验多媒体课件的设计与应用 被引量:4
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作者 邸静 初一鸣 +2 位作者 萧岭梅 马洁 李大印 《首都师范大学学报(自然科学版)》 2004年第S2期34-35,共2页
论述了物理化学实验课件经过多年的制作实践是如何从内容到方法逐步完善的设计理念 .使完成的物理化学实验课件在教学中得到广泛的应用 ,并收到传统教学所不能获得的教学效果 ,同时也得到了学生和专家以及同行的肯定 .
关键词 多媒体课件 物理化学 实验
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《药剂学》多媒体教学课件的设计与制作 被引量:8
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作者 陈三宝 朱智勇 《时珍国医国药》 CAS CSCD 北大核心 2008年第4期899-900,共2页
目的制作一套适用于药学类专业本、专科药剂学教学的多媒体教学课件。方法利用计算机软件制作多媒体教学课件,采用生产现场实地拍摄设备的外观和结构,以动画演示设备的工作原理,以录像展示生产情景。融图、文、声、像、动画于一体。结... 目的制作一套适用于药学类专业本、专科药剂学教学的多媒体教学课件。方法利用计算机软件制作多媒体教学课件,采用生产现场实地拍摄设备的外观和结构,以动画演示设备的工作原理,以录像展示生产情景。融图、文、声、像、动画于一体。结果制作完成的多媒体课件,可对药剂学教学中常用实验技术进行生动形象的动画讲解和操作演示。结论利用多媒体课件进行辅助课堂教学和指导实践教学能有效提高教学质量。 展开更多
关键词 药剂学 多媒体课件 设计与制作
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