检索结果-内蒙古大学图书馆

IEEE International Conference on Computational science and Engineering, CSE

作者： Victor Stroele Jonice Oliveira Geraldo Zimbrao Jano M. Souza COPPE/UFRJ-Graduate School of Computer Science Federal University of Rio de Janeiro Brazil DCC/IM/UFRJ-Computing Science Department-Mathematical Institute Federal University of Rio de Janeiro Rio de Janeiro Brazil

A social network is a social structure consisting of individuals or organizations, usually represented by nodes tied by one or more types of interdependency or relationship. This work focuses on using data mining techniques to identify intra and inter organization groups of people with similar profiles that could have relationships amongst them. For this, we construct a multi relational scientific social network where researchers may have four different types of relations with each other. In this paper, we analyze the scientific scenario in computing science in Brazil, assessing how researchers in the best universities and research centres collaborate and relate to each other.

关键词： Social network services Data mining Organizations Educational institutions Collaboration computer science Knowledge engineering

来源：评论

学校读者我要写书评

暂无评论

EFFICIENT DATA HARVESTING IN MOBILE SENSOR NETWORKS

EFFICIENT DATA HARVESTING IN MOBILE SENSOR NETWORKS

引用

2009 IEEE International Conference on Communications Technology and Applications(2009年IEEE国际通信技术与应用大会 IEEE ICCTA2009)

作者： Yongping Xiong Jianwei Niu Jian Ma Institute of Computing Technology Chinese Academy of Sciences Beijing 100080 China Graduate Unive School of Computer Science and Engineering Beihang University Beijing 100191 China Nokia Research Center Beijing 100176 China

ISBN: (纸本)9781424448166

Sensors are now attached to a lot of mobile objects such as animals and vehicles to collect data. This forms intermittently connected mobile sensor network due to weak communication power and nodal mobility, in which conventional routing protocols in wireless sensor network don’t work. In this paper, we propose a data harvesting scheme for intermittently connected mobile sensor network. This approach takes fully advantage of storage resource and mobility pattern knowledge to improve the delivery ratio while minimizing the transmission overhead. We evaluate the performance of the approach through the OMNet++ simulator with the realistic mobility traces. The simulation results show that the proposed scheme achieves high delivery ratio while controlling the transmission overhead. Furthermore, the robust approach can be adaptive to the dynamic topology of network.

关键词： data harvesting mobile sensor network DTN

来源：评论

学校读者我要写书评

暂无评论

Probabilistic structure from sound

引用

Advanced Robotics 2009年第12-13期23卷 1687-1702页

作者： Wang, Chieh-Chih Lin, Chi-Hao Hu, Jwu-Sheng Department of Computer Science and Information Engineering Graduate Institute of Networking and Multimedia National Taiwan University Taipei 10617 Taiwan Intelligent Robotics Program of Industrial Technology Research Institute Department of Electrical and Control Engineering National Chiao Tung University HsinChu 310 Taiwan

Auditory perception is one of the most important functions for robotics applications. Microphone arrays are widely used for auditory perception in which the spatial structure of microphones is usually known. In practice, microphone array calibration can be tedious and other devices or means are required. The structure from sound (SFS) approach addresses the problem of simultaneously localizing a set of microphones and a set of acoustic events that provides a great flexibility to calibrate different setups of microphone arrays. However, the existing method does not take measurement uncertainty into account and does not provide uncertainty estimates of the SFS results. In this paper, we propose a probabilistic structure from sound (PSFS) approach using the unscented transform in which the uncertainties of the PSFS results are also available. In addition, a probabilistic sound source localization approach using the PSFS results is provided to improve sound source localization accuracy. The ample results of simulation and experiments using low-cost, off-the-shelf microphones demonstrate the feasibility and performance of the proposed PSFS approach. © 2009 VSP.

关键词： Microphone array

来源：评论

学校读者我要写书评

暂无评论

An agent framework to support sensor networks' setup and adaptation

An agent framework to support sensor networks' setup and ada...

引用

International Multiconference on computer science and Information Technology, IMCSIT

作者： Edison Pignaton de Freitas Flávio Rech Wagner Tales Heimfarth Carlos Eduardo Pereira Armando Morado Ferreira Tony Larsson IDE - Halmstad University Sweden Computer Science Department UFLA Lavras Brazil Institute of Informatics UFRGS Porto Alegre Brazil Defense Engineering Graduate Program Military Institute of Engineering Rio de Janeiro Brazil IDE - Halmstad University Halmstad Sweden

Sensor networks are being used in several emerging applications not even imagined some years ago due to advances in sensing, computing, and communication techniques. However, these advances also pose various challenges that must be faced. One important challenge is related to the autonomous capability needed to setup and adapt the networks, which decentralizes the control of the network, saving communication and energy resources. Middleware technology helps in addressing this kind of problem, but there is still a need for additional solutions, particularly considering dynamic changes in users' requirements and operation conditions. This paper presents an agent-based framework acting as an integral part of a middleware to support autonomous setup and adaptation of sensor networks. It adds interoperability among heterogeneous nodes in the network, by means of autonomous behavior and reasoning. These features also address the needs for system setup and adaptations in the network, reducing the communication overhead and decentralizing the decision making mechanism. Additionally, preliminary results are also presented.

关键词： Middleware Image sensors computer networks Communication system control Energy resources Decision making

来源：评论

学校读者我要写书评

暂无评论

Learning a nonlinear color distance metric for the identification of skin immunohistochemical staining

Learning a nonlinear color distance metric for the identific...

引用

2009 22nd IEEE International Symposium on computer-Based Medical Systems, CBMS 2009

作者： Sobieranski, Antonio Carlos Neto, Sylvio Luiz Mantelli Coser, Leandro Comunello, Eros Von Wangenheim, Aldo Cargnin-Ferreira, Eduardo Di Giunta, Gabriella LAPIX Laboratory of Image Processing and Computer Graphics UFSC Federal University of Santa Catarina Brazil CPTEC Center for Weather Forecasts and Environment Studies INPE - Brazilian Institute for Space Research Brazil EGC Knowledge Engineering Department UFSC - Federal University of Santa Catarina Brazil MCA Graduate Program in Applied Computer Science UNIVALI - Itajai Valley University Brazil Laboratory of Histological Markers Department of Biology Embriology and Genetics UFSC - Federal University of Santa Catarina Brazil Pathology Service UFSC - Federal University of Santa Catarina Brazil

ISBN: (纸本)9781424448784

This paper presents a semiautomatic method for the identification of immunohistochemical (IHC) staining in digitized samples. The user trains the system by selecting on a sample image some typical positive stained regions that will be used as a reference for the construction of a distance metric. In this learning process, the global optimum is obtained by induction employing higher polynomial terms of the Mahalanobis distance, extracting nonlinear features of the IHC pattern distributions. The results of the proposed method showed a high correlation to a pathologist's manual analysis, which was used as a golden standard, presenting a more robust discrimination between stained and non-stained areas with little bias. © 2009 IEEE.

关键词：

来源：评论

学校读者我要写书评

暂无评论

3D interval wavelet moments for 3D objects

引用

Journal of Information and Computational science 2009年第4期6卷 1799-1810页

作者： Cui, Li Li, Ying Li, Hua Laboratory of Mathematics and Complex Systems Ministry of Education School of Mathematical Sciences Beijing Normal University Beijing 100875 China College of Computer Science and Technology Jilin University Changchun 130021 China National Research Center for Intelligent Computing Systems Institute of Computing Technology Chinese Acad. of Sci. Beijing 100080 China Graduate University of Chinese Acad. of Sci. Beijing 100049 China

In this paper, we introduce wavelets on the interval [0, 1] in 3D wavelet moments, which we call 3D interval wavelet moments. Based on these, new descriptors for 3D objects are put forward. They are invariant to translation, rotation and scale, and have the multi-resolution features in the radial direction, which can handle noise to some extent and provide multi-level features to satisfy various requirements. Furthermore the new method is prior to the original 3D wavelet moments on the presentation of the edge of the objects. They have fast Mallat algorithm too. With the Pearson correction in each level, we give a new method to measure the similarity of two objects. © 2009 Binary Information Press.

关键词： Correlation methods

来源：评论

学校读者我要写书评

暂无评论

Identification of cell cycle-related regulatory motifs using a kernel canonical correlation analysis

引用

BMC Genomics 2009年第SUPPL. 3期10卷 1-10页

作者： Rhee, Je-Keun Joung, Je-Gun Chang, Jeong-Ho Fei, Zhangjun Zhang, Byoung-Tak Graduate Program in Bioinformatics Seoul National University Seoul 151-744 South Korea Center for Biointelligence Technology (CBIT) Seoul National University Seoul 151-744 South Korea Boyce Thompson Institute for Plant Research Cornell University Ithaca NY 14853 United States Konan Technology Inc Seoul 135-080 South Korea USDA Robert W. Holley Center for Agriculture and Health Ithaca NY 14853 United States School of Computer Science and Engineering Seoul National University Seoul 151-744 South Korea

Background: Gene regulation is a key mechanism in higher eukaryotic cellular processes. One of the major challenges in gene regulation studies is to identify regulators affecting the expression of their target genes in specific biological processes. Despite their importance, regulators involved in diverse biological processes still remain largely unrevealed. In the present study, we propose a kernel-based approach to efficiently identify core regulatory elements involved in specific biological processes using gene expression profiles. Results: We developed a framework that can detect correlations between gene expression profiles and the upstream sequences on the basis of the kernel canonical correlation analysis (kernel CCA). Using a yeast cell cycle dataset, we demonstrated that upstream sequence patterns were closely related to gene expression profiles based on the canonical correlation scores obtained by measuring the correlation between them. Our results showed that the cell cycle-specific regulatory motifs could be found successfully based on the motif weights derived through kernel CCA. Furthermore, we identified co-regulatory motif pairs using the same framework. Conclusion: Given expression profiles, our method was able to identify regulatory motifs involved in specific biological processes. The method could be applied to the elucidation of the unknown regulatory mechanisms associated with complex gene regulatory processes. © 2009 Rhee et al;licensee BioMed Central Ltd.

关键词： Canonical Correlation Analysis Regulatory Motif Upstream Sequence Gene Expression Dataset Yeast Cell Cycle

来源：评论

学校读者我要写书评

暂无评论

Identification of cell cycle-related regulatory motifs using a kernel canonical correlation analysis

Identification of cell cycle-related regulatory motifs using...

引用

8th International Conference on Bioinformatics: Computational Biology, InCoB 2009

作者： Rhee, Je-Keun Joung, Je-Gun Chang, Jeong-Ho Fei, Zhangjun Zhang, Byoung-Tak Graduate Program in Bioinformatics Seoul National University Seoul 151-744 Korea Republic of Seoul National University Seoul 151-744 Korea Republic of Boyce Thompson Institute for Plant Research Cornell University Ithaca NY 14853 United States Konan Technology Inc. Seoul 135-080 Korea Republic of USDA Robert W. Holley Center for Agriculture and Health Ithaca NY 14853 United States School of Computer Science and Engineering Seoul National University Seoul 151-744 Korea Republic of

关键词： Gene expression

来源：评论

学校读者我要写书评

暂无评论

Assembly of CdSeS(ZnS) quantum dots in langmuir films with tertiary alkyl phosphine ligands

Assembly of CdSeS(ZnS) quantum dots in langmuir films with t...

引用

Nanotechnology - General - 214th ECS Meeting/PRiME 2008

作者： Giles, Alexander J. Pagan, J. Patel, K. Stokes, E.B. Nanoscale Science Graduate Program Department of Chemistry University of North Carolina at Charlotte 9201 University City Boulevard Charlotte NC 28223 United States Dot Metrics Technologies Charlotte Research Institute University of North Carolina at Charlotte 9201 University City Boulevard Charlotte NC 28223 United States Department of Electrical and Computer Engineering University of North Carolina at Charlotte 9201 University City Boulevard Charlotte NC 28223 United States Center for Optoelectronics and Optical Communications University of North Carolina al Charlotte 9201 University City Boulevard Charlotte NC 28223 United States

ISBN: (纸本)9781615672998

The focus of this paper is to describe studies on pre-prepared hydrophobic CdSeS(ZnS) quantum dots (QDs) at the air-water interface. Surface pressure-area (π-A) isotherms were extensively studied using QDs capped with either trioclylphosphine oxide or triethylphosphine oxide. The role of these two different ligands on monolayer behavior and thin film quality has been investigated using the Langmuir-Blodgett (LB) technique. The thin films were characterized by scanning electron microscopy (SEM), fluorescence spectroscopy, and UV-vis spectroscopy. ©The Electrochemical Society.

关键词： Cadmium compounds

来源：评论

学校读者我要写书评

暂无评论

Robust appearance-based method for head pose estimation

引用

Ruan Jian Xue Bao/Journal of Software 2009年第6期20卷 1651-1663页

作者： Ma, Bing-Peng Shan, Shi-Guang Chen, Xi-Lin Gao, Wen Key Laboratory of Intelligent Information Processing Chinese Acad. of Sci. Beijing 100190 China Institute of Computing Technology Chinese Acad. of Sci. Beijing 100190 China Graduate University Chinese Acad. of Sci. Beijing 100049 China School of Electronic Engineering and Computer Science Peking University Beijing 100871 China

This paper proposes a new pose estimation method based on the appearance of 2D head image. First, the 1D Gabor filters are used to extract the features on the raw images. Compared with the traditional 2D Gabor represents, the 1D Gabor represents are more closely related to the head pose, while the advantages of computation and storage are obvious. Second, for the extracted features, a new method, named kernel local fisher discriminant analysis, is applied to eliminate the multimodal problem, while at the same time enhance the discrimination ability. Experimental results show that the proposed method is effective for pose estimation. It must be pointed out that the generalizability of the proposed method is illustrated by the impressive performance when the training dataset and the testing dataset are heterogeneous. © by institute of Software, the Chinese Academy of sciences. All rights reserved.

关键词： Gabor filters

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：