检索结果-内蒙古大学图书馆

2010 9th International Symposium on Antennas Propagation and EM Theory, ISAPE 2010

作者： Du, Hong-Mei Chen, Ming-Sheng Wu, Xian-Liang Lu, Si-Long Mei, Yi-Cai Key Lab. of Intelligent Computing and Signal Processing Anhui University Ministry of Education Hefei 230029 China Department of Physics and Electronic Engineering Hefei Normal University Hefei 230601 China School of Information Science and Technology University of Science and Technology of China Hefei 230026 China

ISBN: (纸本)9781424469062

A new incident source with different angles was constructed for dealing with wide-angle scattering problems. Considering the impendence matrix in method of moments (MOM) is independent from incident angles, the equivalent relationship between induced current and the measured CS-current was build, while the CS-current can be computed directly under the new incident source. Finally, we can reconstruct the induce current by utilizing the theory of compressive sensing (CS). Compared with traditional MOM, the computational complexity can be greatly reduced. ©2010 IEEE.

关键词： Method of moments

来源：评论

学校读者我要写书评

暂无评论

Efficient Common Items Extraction from Multiple Sorted Lists

Efficient Common Items Extraction from Multiple Sorted Lists

引用

International Asia-Pacific Web Conference (APWEB)

作者： Wei Lu Chuitian Rong Jinchuan Chen Xiaoyong Du Gabriel Pui Cheong Fung Xiaofang Zhou Ministry of Education Key Laboratories of Data Engineering and Knowledge Engineering China School of Information Renmin University of China China School of Computing Informatics Arizona State University USA School of ITEE University of Queensland Australia

Given a set of lists, where items of each list are sorted by the ascending order of their values, the objective of this paper is to figure out the common items that appear in all of the lists efficiently. This problem is sometimes known as common items extraction from sorted lists. To solve this problem, one common approach is to scan all items of all lists sequentially in parallel until one of the lists is exhausted. However, we observe that if the overlap of items across all lists is not high, such sequential access approach can be significantly improved. In this paper, we propose two algorithms, MergeSkip and MergeESkip, to solve this problem by taking the idea of skipping as many items of lists as possible. As a result, a large number of comparisons among items can be saved, and hence the efficiency can be improved. We conduct extensive analysis of our proposed algorithms on one real dataset and two synthetic datasets with different data distributions. We report all our findings in this paper.

关键词： data mining data engineering knowledge engineering Informatics Algorithm design and analysis Computer science Application software Information retrieval

来源：评论

学校读者我要写书评

暂无评论

Local Methods for Estimating SimRank Score

Local Methods for Estimating SimRank Score

引用

International Asia-Pacific Web Conference (APWEB)

作者： Xu Jia Hongyan Liu Li Zou Jun He Xiaoyong Du Yuanzhe Cai Ministry of Education Key Laboratories of Data Engineering and Knowledge Engineering China Department of Computer Science Renmin University of China China Department of Management Science and Engineering Tsinghua University China Department of Computer Science University of Texas Arlington TX USA

SimRank is a well known algorithm which conducts link analysis to measure similarity between each pair of nodes (nodepair). But it suffers from high computational cost, limiting its usage in large-scale datasets. Moreover, Links between nodes are changing over time. It may be desirable to quickly approximate the similarity score between certain nodepair without performing a large-scale computation on the entire graph. In our approach we propose a method to efficiently estimate the similarity score using only a small subgraph of the entire graph. We call this novel algorithm “Local-SimRank”. The experimental results conducted on real datasets and synthetic dataset show that our algorithm efficiently produces good approximations to the global SimRank scores. Meanwhile, we prove that the Local-SimRank score LS(a, b) is always less than original SimRank score S(a, b) mathematically.

关键词： Computer science Application software Web pages data engineering knowledge engineering Algorithm design and analysis Large-scale systems Computer science education Conference management knowledge management

来源：评论

学校读者我要写书评

暂无评论

Predicting soil erosion process based on RS & GIS: A case study

Predicting soil erosion process based on RS & GIS: A case st...

引用

2010 Asia-Pacific Conference on Wearable Computing Systems, APWCS 2010

作者： Peng, Wenfu Xu, Huixi Xue, Wanrong Yang, Cunjian Key Lab. of Land Resources Evaluation and Monitoring in Southwest Ministry of Education Sichuan Normal University Chengdu Sichuan 610068 China Institute of Geography and Resources Sichuan Normal University Chengdu Sichuan 610068 China Institute of Engineering Surveying Sichuan College of Architectural Technology Deyang 618000 China

ISBN: (纸本)9780769540030

Soil erosion is becoming more and more serious worldwide in recent decades, and remains a major threat to terrestrial ecosystem and global sustainable development. The loss of topsoil through erosion results in a significant loss in productivity. The subsoil remains is likely to be incapable of supporting viable agricultural enterprises. Runoff from eroding landscapes contains sediment and any nutrients, fertilizers or pesticides that were present in the soil. Assessment on soil erosion hazard is essential for soil conservation plans of a mountainous region for sustainable development. The objective of this study was to predicting soil erosion process and mapping soil erosion hazard of Yizi (Rehe district, Sichuan province, ***) following RS(remote sensing) and GIS based on modeling approach using derived soil, land cover and DEM derived terrain slope map and ancillary data of soil characteristics and rainfall as inputs. Integrated predicting approach resulted in five classes of soil erosion hazard from low to high in this study area with numerical values of the Soil Loss Equation (SLE). The results shows that RS and GLS are indeed valuable tools for predicting soil erosion process and soil erosion hazard mapping by integration of soil erosion controlling parameters.

关键词： Erosion

来源：评论

学校读者我要写书评

暂无评论

RETRACTED ARTICLE: Thermodynamic analysis and program design of tube evaporative condenser

RETRACTED ARTICLE: Thermodynamic analysis and program design...

引用

Asia-Pacific Power and Energy engineering Conference, APPEEC 2010

作者： Yin, Y.D. Zhu, D.S. Liu, Q.M. Wu, G.L. Chen, G.Y. Key Lab. of Enhancement Heat Transfer and Energy Conservation Ministry of Education South China University of Technology 510641 Guangzhou China Guangzhou City Design Institute of Architecture and Engineering Guangzhou City Ka Yip Building No. 318 Dong Feng Zhong Road 510030 Guangzhou China

ISBN: (纸本)9781424448135

According to the heat-mass transfer specialty existed in an evaporative condenser, adopted the method of equivalent heat transfer and logarithmic average enthalpy difference, the design calculation method adapted computer is found, it is convenient to thermodynamic calculation and design choice of an evaporative condenser, and is useful to optimize the design of an evaporative condenser. ©2010 Crown.

关键词： Evaporative cooling systems

来源：评论

学校读者我要写书评

暂无评论

Study in retrieval visibility and optical thickness of fog with MODTRAN

Study in retrieval visibility and optical thickness of fog w...

引用

International Conference on Multimedia Technology

作者： Zhang, Wengang Wei, Ming Yu, Tao Wang, Gengke Lai, Jibao Wang, Yuqing Key Laboratory of Meteorological Disaster of Ministry of Education Earth System Remote Sensing Institute Nanjing University of Information Science and Technology Nanjing 210044 China Center for National Space-borne Demonstration Beijing 100101 China Institute of Data and Knowledge Engineering Henan University Kaifeng Henan 475001 China Binjiang College Nanjing University of Information Science and Technology Nanjing 210044 China

ISBN: (纸本)9781424478743

In recent years, many scientists have done some work in monitoring the fog, and achieved fruitful results. Now we want to conduct more in-depth study. In this paper, we utilize MODTRAN to simulate the relationship between transmittance and visibility, height of fog. By fitting the relationship between them, we get the formula that calculates visibility of fog using transmittance and height of fog. The correlation coefficient of this formula is very high, so it can be regarded as an accuracy one. The height of fog can be calculated by top temperature of fog, surface temperature and vertical lapse rate. The transmittance of the fog can be measured by using special instrument. Therefore, the visibility and optical thickness can be retrieved by this method. ©2010 IEEE.

关键词： Visibility

来源：评论

学校读者我要写书评

暂无评论

Application of Dempster-Shafer evidential theory in rock bolt testing

Application of Dempster-Shafer evidential theory in rock bol...

引用

作者： Sun, Xiaoyun Cheng, Jiulong Lv, Dandan Liu, Donghui School of Electrical and Electronics Engineering Shijiazhuang Tiedao University Shijiazhuang 050043 China Key Lab. for the Exploitation of Southwestern Rsrc. and the Environ. Disaster Control Engineering Ministry of Education Chongqing 400044 China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and Technology Beijing 100083 China School of Electrical Engineering and Information Technology Hebei University of Science and Technology Shijiazhuang 050018 China

ISBN: (纸本)9789078677383

The basic concept and the fusion reasoning method of Dempster-Shafer evidential theory are introduced in this paper, by which the basic probability assignment testing the rock bolt is gained. The tested signal with different exciting frequencies is decomposed by HHT method, coefficients in useful signal dominative layer are used to be data fusion signal, and the Dempster-Shafer evidential theory is used to solve the rock bolt inspection problem. The result shows the effectiveness of Dempster-Shafer evidential theory method. © Atlantis Press, 2010.

关键词： Rock mechanics

来源：评论

学校读者我要写书评

暂无评论

Landscape pattern analysis with GIS based on the principle of landscape ecology

Landscape pattern analysis with GIS based on the principle o...

引用

International Conference on Information Science and engineering (ICISE)

作者： Zheng, Xiangyu Pan, Weibin Huang, Hua Zhao, Kunrong College of Environmental Science and Engineering South China University of Technology SCUT Guangzhou China Ministry of Education Key Lab. of Pollution Control and Ecosystem Restoration in Industry Clusters South China University of Technology SCUT Guangzhou China Guangzhou Research Institute of Environmental Protection Guangzhou China South China Institute of Environmental Sciences Ministry of Environmental Protection MEPA Guangzhou China

ISBN: (纸本)9781424480968

GIS provides quantitative method for studying land use, such as landscape pattern analysis. It is convenient to analyze landscape pattern with ArcGIS for its simple operation and friendly graphical user interface. In this paper, ArcGIS was applied to study the land use in Changping Town, Dongguan City in Guangdong province, China. We compiled the land use actuality landscape map and land use planning landscape map, and then calculated and analyzed some landscape metrics, such as area metrics, patch density and size metrics, shape metrics and diversity metrics. The result shows that the landscape structure and function in Changping Town tend to be improved after land use planning. © 2010 IEEE.

关键词： Geographic information systems

来源：评论

学校读者我要写书评

暂无评论

An improved reproducing kernel particle method for nonlinear dynamical penetration process

引用

Baozha Yu Chongji/Explosion and Shock Waves 2010年第4期30卷 355-360页

作者： Zhao, Guang-Ming Song, Shun-Cheng Key Lab. on Safe and Effective Coal Mining Sponsored by Anhui Province and Ministry of Education Anhui University of Science and Technology Huainan 232001 Anhui China School of Mechanics and Engineering Southwest Jiaotong University Chengdu 610031 Sichuan China

The Johnson-Cook constitutive relations and damage model were introduced into the reproducing kernel particle (RKP) method, and a new interface calculation method and a collocation method were proposed to solve the problems of interface and gliding particles, realize the boundary conditions and adjust the particle velocity in the computational process. The improved RKP method was applied to numerically analyze the oblique penetration process of a steel cylindrical pellet into a fixed steel plate. In the computation, the pellet and target plate were divided into kernel particles other than elements. Computational results show that the improved RKP method can avoid the finite element deformation in the finite element method and the element reconstruction in the damage process and enhance analysis accuracy and computational speed. And the improved RKP method can be used to conveniently analyze the large deformation and high strain rate phenomena in penetration process.

关键词： Strain rate

来源：评论

学校读者我要写书评

暂无评论

The research of association rules based on image mining

引用

Journal of Information and Computational Science 2010年第2期7卷 391-397页

作者： Lei, Liang Wang, Tongqing Wang, Xue Yang, Bo Key Lab. of Optoelectronic Technology and System Ministry of Education Chongqing University Chongqing 400030 China School of Electronic Information Engineering Chongqing University of Science and Technology Chongqing 401331 China

Image mining is a hot research in database technology, image engineering, and intelligent decision-making, and it is a challenging area about fusing data mining and image understanding. Discovering image association rules is one of the most important tasks in image data mining. However, the number of discovered rules is so large, so the user cannot analyze all discovered rules. At the same time, the populations are troubled into stagnation, resulting in partial convergence. To solve those problems, the paper proposed the interest measure to extract association rules, improved genetic operators, designed a self-Adaptive Genetic Algorithm based on Random operator (AGAR) made crossover operator and mutation operator random variable. Lastly, the AGAR algorithm was applied successfully to mine remote sensing images, and those image association rules were distilled by the new methods. The results presented in the paper demonstrate that the new genetic algorithm is a stable, superior algorithm. Copyright © 2010 Binary Information Press.

关键词： Genetic algorithms

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：