检索结果-内蒙古大学图书馆

2nd International Conference on Interaction sciences: Information Technology, Culture and Human, ICIS 2009

作者： Park, Min-Chul Cheoi, Kyung Joo Intelligent System Research Division Korea Institute of Science and Technology Seoul Korea Republic of School of Electrical and Computer Engineering Chungbuk National University Chongju Korea Republic of

ISBN: (纸本)9781605587103

In this paper, a new method of automatic focusing attention for a stereo pairs of image sequence is proposed. The proposed method is new in that it utilizes motion and depth information for the purpose of detecting FOA(focus of attention). Typical feature integration model is expanded to incorporate motion and depth stimulus in our suggested model. Suggested model is able to respond to motion stimulus by employing motion fields map as one of temporal features to the feature integration model, and also the disparity map obtained from a stereo pair of images is exploited as one of spatial visual features to form a set of topographic feature maps in our approach. The analysis of motion field map and incorporation of the result are distinct from some of the previous studies on spatial feature integration. We have tested our model with various kinds of real images such as stereo pairs of image sequences which have all kind of features(color, intensity, orientation, form, depth, motion), or the images which have just have only intensity, or have no depth or no motion information. Copyright © 2009 ACM.

关键词： Stereo image processing

来源：评论

学校读者我要写书评

暂无评论

Ytterbium-doped mode-locked fiber laser at hundreds of kHz repetition rate

Ytterbium-doped mode-locked fiber laser at hundreds of kHz r...

引用

Conference on Lasers and Electro-Optics, CLEO 2009

作者： Zhou, Chun Chen, Lingling Cai, Yue Zhang, Meng Ren, Ling Li, Peng Zhang, Zhigang Institute of Quantum Electronics State Key Laboratory of Advanced Optical Communication System and Networks School of Electronics Engineering and Computer Science University of Beijing Beijing 100871 China

A long ring-cavity, low repetition rate Yb-doped fiber laser was demonstrated. Pulses with repetition rate of about 381.3 kHz and single pulse energy above 300 nJ were obtained. © 2009 Optical Society of America.

ISBN: (纸本)9781557528698

关键词： Fiber lasers

来源：评论

学校读者我要写书评

暂无评论

Novel system for automatic measuring diopter based on ARM circuit block

Novel system for automatic measuring diopter based on ARM ci...

引用

International Symposium on Photoelectronic Detection and Imaging 2009: Material and Device Technology for Sensors

作者： Xue, Feng Zhong, Lei Chen, Zhe Xue, Deng-Pan Li, Xiang-Ning School of Optical-Electrical and Computer Engineering University of Shanghai for Science and Technology Shanghai 200093 China Shanghai Key Laboratory of Modern Optical System Shanghai 200093 China

ISBN: (纸本)9780819476623

Traditional commercial instruments utilized in vision screening programs cannot satisfy the request for real-time diopter measurement by far, and their success is limited by some defectiveness such as computer-attached, clumsy volume, and low accuracy of parameters measured, etc. In addition, astigmatic eyes cannot be determined in many devices. This paper proposes a new design of diopter measurement system based on SAMSUNG's ARM9 circuit block. There are several contributions in the design. The new developed system has not only the function of automatically measuring diopter, but also the advantages of the low cost, and especially the simplicity and portability. Besides, by placing point sources in three directions, the instrument can determine astigmatic eyes at the same time. Most of the details are introduced as the integrated design of measuring system, interface circuit of embedded system and so on. Through a preliminary experiment, it is proved that the system keeps good feasibility and validity. The maximum deviation of measurement result is *** experimental results also demonstrate the system can provide the service needed for real-time applications. The instrument present here is expected to be widely applied in many fields such as the clinic and home healthcare. © 2009 SPIE.

关键词： Embedded systems

来源：评论

学校读者我要写书评

暂无评论

Conditional IMS Learning Design Generation using User Modeling and Planning Techniques

Conditional IMS Learning Design Generation using User Modeli...

引用

IEEE International Conference on Advanced Learning Technologies

作者： Hernandez, Jorge Baldiris, Silvia Santos, Olga C. Fabregat, Ramon Boticario, Jesus G. System Engineering Program Corporación Universitaria de la Costa Colombia Institute of Informatics and Aplications (IIiA) Universidad de Girona Spain ADeNu Research Group Artificial Intelligence Department Computer Science School Spain

ISBN: (纸本)9781424444823

Active modeling is required in learning settings to cope with the dynamic evolution of the knowledge, since learners competences evolves over time as they participate in the course activities. Moreover, one of the main issues in a competence based eLearning process is to deliver personalized instructional designs adjusted to both 1) intrinsic characteristics of users (i.e. learning styles) and 2) the desired and achieved competences in the learning process (i.e. specific and generic competences). This delivery includes the adaptation of the content and the activities in a learning scenario based on a dynamic user model that evolves according to user interactions. In this paper, an approach to support Conditional Plans Generation (IMS Learning Designs) in the context of a virtual learning environment is presented The process is supported by a pervasive usage of standards and specifications (IMS family of specifications) in conjunction with an integral user modeling.

关键词： Specifications

来源：评论

学校读者我要写书评

暂无评论

An advance home eldercare services

An advance home eldercare services

引用

2nd International Conference on Health Informatics, HEALTHINF 2009

作者： Taleb, Tank Bottazzi, Dario Nasser, Nidal Nait-Charif, Hammadi Graduate School of Information Sciences Tohoku University Japan Department of Electronics Computer Science and System Engineering University of Bologna Italy Department of Computing and Information Science University of Guelph Canada National Centre for Computer Animation Bournemouth University United Kingdom

ISBN: (纸本)9789898111630

With the increase of welfare cost all over the developed world, there is a need to resort to new technologies that could help reduce this enormous cost and provide some quality eldercare services. This paper presents a middleware-level solution that integrates monitoring and emergency detection solutions with networking solutions. The proposed system enables efficient integration between a variety of sensors and actuators de?ployed at home for emergency detection and provides a framework for creating and managing rescue teams willing to assist elders in case of emergency situations. A prototype of the proposed system was designed and implemented. Results were obtained from both computer simulations and a real-network testbed.

关键词： Middleware

来源：评论

学校读者我要写书评

暂无评论

Rendering method for multi-attribute objects based on state transition optimization strategy

引用

Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao/Journal of computer-Aided Design and computer Graphics 2009年第3期21卷 311-318页

作者： Chen, Zhiyu Liang, Xiaohui Yu, Zhuo State Key Laboratory of Virtual Reality Technology and System School of Computer Science and Engineering Beihang University Beijing 100083 China

Efficient rendering of complex scenes has receive great attention in real-time computer graphics. Current researches are mostly concentrated on reducing the geometric complexity of the scene model such as reconstructing an LOD representation, performing visibility culling etc. However, the rendering process of complex scenes involves not only the geometric information of each object, but also multiple attributes, including lighting, material, texture, etc. The invocation of each attribute corresponds to a specific state in the rendering pipeline, frequent transfer between different states in the pipeline will introduce large amount of overhead, hence reducing the rendering efficiency. A rendering method accounting for efficient invocation of multiple attributes of objects based on state transition optimization strategies is presented. It estimates the cost for invoking each attribute of objects in the rendering pipeline and expresses the transitions between various render states as a weighted directed graph. Then the optimized sequence of state transition is obtained by optimization. Experimental results show that our proposed method can effectively reduce the overhead of state transition and improve the rendering efficiency of scenes containing large amounts of multi-attribute objects.

关键词： Efficiency

来源：评论

学校读者我要写书评

暂无评论

5766 infrared detector multi-channel data acquisition system

5766 infrared detector multi-channel data acquisition system

引用

2008 International Conference on Optical Instruments and Technology: Optical systems and Optoelectronic Instruments

作者： Jian, Yu Jing-Long, Yan School of Navigation Science and Technology Beijing Institute of Technology Beijing China School of Electronics and Computer Science and Technology North University of China Shanxi China North China System Engineering Institute Beijing China

The implementation of a high resolution infrared image data acquisition system is introduced. An adapter is designed to provide a working environment needed by the detector and perform the functions of signal level shifting. The analog image signal is converted to digital data by high precision pipeline ADC. The acquired image data is reordered and then sent to the host computer via a PCI adapter. The image data reorder function is implemented based on asynchronous static RAM. The design detail about the noise and dynamic performance of the amplifier was present. © 2009 SPIE.

关键词： Analog circuits

来源：评论

学校读者我要写书评

暂无评论

The fourth international conference on intelligent environments (IE 08): a report

The fourth international conference on intelligent environme...

引用

作者： Hagras, Hani Callaghan, Vic Cook, Diane Helal, Abdelsalam Department of Computing and Electronic System University of Essex United Kingdom Computational intelligence Centre Fuzzy Systems Research United Kingdom Department of Computer science University of Essex United Kingdom Inhabited Intelligent Environments group United Kingdom School of Electrical Engineering and Computer Science Washington State University United States Engineering Department Computer and Information Science University of Florida United States

The Fourth IET International Conference on Intelligent Environments was held July 21- 22 at the University of Washington campus in Seattle, Washington. The general chairs were Diane Cook of Washington State University and Sumi Helal of the University of Florida. Hani Hagras and Vic Callaghan of the University of Essex served as program chairs. This article presents a report of the conference. Copyright © 2009, Association for the Advancement of Artificial Intelligence. All rights.

关键词： Intelligent agents

来源：评论

学校读者我要写书评

暂无评论

A smartphone-centric platform for personal health monitoring using wireless wearable biosensors

A smartphone-centric platform for personal health monitoring...

引用

7th International Conference on Information, Communications and Signal Processing, ICICS 2009

作者： Lam, Stephen Chiu Kwok Wong, Kai Lap Wong, Kwok On Wong, Wenxiu Mow, Wai Ho Wireless IC System Design Center HKUST Fok Ying Tung Graduate School Nansha China Dept. of Electronic and Computer Engineering Hong Kong University of Science and Technology Hong Kong

ISBN: (纸本)9781424446575

The body area sensor network is widely regarded as a key technology that holds promise of enabling low-cost healthcare to be accessible to the fast growing aging sector of the population. The popularity of smartphones with their open operating systems provides a powerful platform for developing very low-cost personalized healthcare applications. In addition to the requirement of low cost, the limited battery life and the implementation of bio-signal processing software in resource-constrained smartphone platforms are two practical challenges. In this work, we present the design and implementation considerations of such a smartphone-centered platform for low-cost continuous health monitoring based on commercial-off-the-shelf wireless wearable biosensors, which are anticipated to proliferate in the market in the near future. As a case study, this platform approach has been implemented utilizing photoplethysmographic biosensors and different smartphones to measure heart rate, breathing rate, oxygen saturation, and estimate obstructive sleep apnea. The two aforementioned practical challenges have been addressed in detail from a system-level design perspective. The case study result confirms the many advantages of the suggested system, including the closed loop control capability, portability and upgradability. ©2009 IEEE.

关键词： Smartphones

来源：评论

学校读者我要写书评

暂无评论

Can the Energy and Actuated Variables of Underactuated Mechanical systems be Controlled? –Example of the Acrobot with Counterweight

Can the Energy and Actuated Variables of Underactuated Mecha...

引用

Joint 48th IEEE Conference on Decision and Control and 28th Chinese Control Conference

作者： Xin Xin Lei Guo Faculty of Computer Science and System Engineering Okayama Prefectural University School of Instrument Science and OptoElectronics Engineering Beihang University

The energy-based control approach aiming to control the total mechanical energy and actuated variables of underactuated mechanical systems has generated renewed interests in studying these *** applications of the approach to the swing-up control for the Acrobot(2-link planar robot with passive first joint),the Pendubot(2-link planar robot with passive second joint),and an n-link revolute planar robot with a passive joint robot,have been *** paper investigates whether the objective of controlling the energy and actuated variables to some given desired values can be achieved for any underactuated mechanical *** aim to answer this question by studying the problem of swinging up a modified Acrobot,which has a counterweight connected to its first link and is called CWA(Counter-Weighted Acrobot) *** analyzing globally the behavior of the solution of the closed-loop system consisted of the CWA and the controller designed via the energy-based control approach,we show that unless the mechanical parameters of the CWA satisfying a constraint,the swing-up controller fails to achieve the goal of stabilizing the energy to the potential energy at the upright position and stabilizing the actuated joint variable to *** simulation results are provided to validate the theoretical results.

关键词： Acrobot Can the Energy and Actuated Variables of Underactuated Mechanical systems be Controlled Example of the Acrobot with Counterweight

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：