检索结果-内蒙古大学图书馆

Virtual brain surgery simulation system based on haptic interaction

High Technology Letters 2015年第2期21卷 185-191页

作者：张小瑞 Zhu Jiandong Sun Wei Norman I.Badler Song Aiguo Niu Jianwei Liu Jia School of Computer and Software Nanjing University of Information Science & Technology Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science and Technology School of Information and Control Nanjing University of Information Science & Technology School of Engineering and Applied Science University of Pennsylvania School of Instrument Science and Engineering Southeast University State key Laboratory of Virtual Reality Technology and Systems Beihang University

To improve the accuracy and interactivity of soft tissue delormatlon simulation, a new plate spring model based on physics is proposed. The model is parameterized and thus can be adapted to simulate different organs. Different soft tissues are modeled by changing the width, number of pieces, thickness, and length of a single plate spring. In this paper, the structural design, calcula- tion of soft tissue deformation and real-time feedback operations of our system are also introduced. To evaluate the feasibility of the system and validate the model, an experimental system of haptic in- teraction, in which users can use virtual hands to pull virtual brain tissues, is built using PHANTOM OMNI devices. Experimental results show that the proposed system is stable, accurate and promising for modeling instantaneous soft tissue deformation.

关键词： haptic feedback human-computer interaction surgery simulation soft tissue deformation

来源：评论

学校读者我要写书评

暂无评论

Research on privacy protection of WHOIS information in DNS 6

Research on privacy protection of WHOIS information in DNS

引用

6th FTRA International Conference on computer Science and its Applications, CSA 2014

作者： Zhang, Wei Wang, Wei Zhang, Xinchang Shi, Huiling Shandong Provincial Key Laboratory of Computer Networks Shandong Computer Science Center National Supercomputer Center in Jinan Jinan250000 China DNSLAB China Internet Network Information Center Beijing100190 China

ISBN: (纸本)9783662454015

WHOIS service allows people to ask the current registrant some Internet resources. WHOIS service has become an indispensable information service in the DNS. Unfortunately, WHOIS information is often available by the malicious third party. In this paper, we first analyzed the whole process of the WHOIS protocol. And then the process of the WHOIS privacy collection is analyzed through the clustering method. Several methods of protection of the WHOIS privacy are proposed in this paper. Through the experimental results it can be seen that the protection method can better protect the privacy of WHOIS information in DNS. © Springer-Verlag Berlin Heidelberg 2015.

关键词： information services

来源：评论

学校读者我要写书评

暂无评论

Conditional privacy-protection remote user authentication mechanism for WBAN

引用

Tongxin Xuebao/Journal on Communications 2016年 37卷 63-71页

作者： Cao, Jin Zheng, Yi-Qing Li, Hui State Key Laboratory of Integrated Services Networks School of Cyber Engineering Xidian University Xi'an710126 China Shaanxi Key Laboratory of Computer Network School of Electronic and Information Engineering Xi'an Jiaotong University Xi'an710049 China

A conditional privacy-protection remote user authentication scheme based on a certificateless group signature was proposed, which can accomplish the anonymous mutual authentication between the user and the remote doctors. In addition, when the doctors perceived that users were in case of an emergency, the mechanism enabled the only group manager (GM) to expose the real identity information of users and given users timely assistance. The scheme can provide the anonymity, traceability, mutual authentication, non-reputation and some other security features. The performance analysis results show the scheme is more suitable for WBAN. © 2016, Editorial Board of Journal on Communications. All right reserved.

关键词： Wireless local area networks (WLAN)

来源：评论

学校读者我要写书评

暂无评论

Motiviting Others Drives Jamshidi [SMC Innovators]

引用

IEEE Systems, Man, and Cybernetics Magazine 2015年第3期1卷 67-72页

作者： M.E. El-Hawary School of Computer Science and Engineering Southeast University China Ministry of Education Key Laboratory of Computer Network and Information Integration China

Presents an interview conducted with Dr. Jamshidi.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Soft information assisted phase noise estimation in vector OFDM using linear MMSE receivers 19

Soft information assisted phase noise estimation in vector O...

引用

19th International ITG Workshop on Smart Antennas, WSA 2015

作者： Ngebani, Ibo Li, Yabo Xia, Xiang-Gen Zhao, Minjian Chuma, Joseph Cai, Yunlong Department of Information Science and Electrical Engineering Zhejiang Provincial Key Laboratory of Information Network Technology Zhejiang University Hangzhou Zhejiang China Department of Electrical and Computer Engineering University of Delaware NewarkDE19716 United States

ISBN: (纸本)9783800736621

Vector orthogonal frequency division multiplexing (V-OFDM) for single transmit antenna systems is a generalization of OFDM where single-carrier frequency domain equalization (SC-FDE) and OFDM are just two special cases. Phase noise in a V-OFDM system leads to a common vector block phase error (CVBPE) as well as an inter vector block carrier interference (IVBCI) effect. Severe performance degradation results if these two effects are not estimated and compensated for. In this paper blind and semi-blind phase noise estimation and compensation in a V-OFDM system is investigated by using the expectation maximization (EM) algorithm. This is motivated by the fact that conventional frequency domain phase noise suppression schemes based on pilot-aided CVBPE estimation and compensation are not spectrally efficient as the vector block size is increased. Two novel algorithms are proposed, one estimates the CVBPE only and the other estimates the entire phase noise sequence in the time-domain. Simulations show that with the proposed algorithms V-OFDM can outperform OFDM system with conventional data aided or soft information aided phase noise CPE correction. © VDE Verlag GMBH · Berlin · Offenbach, Germany.

关键词： Vectors

来源：评论

学校读者我要写书评

暂无评论

Multi-threshold image segmentation through an improved quantum-behaved particle swarm optimization algorithm 1st

Multi-threshold image segmentation through an improved quant...

引用

1st International Conference on Cloud Computing and Security, ICCCS 2015

作者： Jiali, Wang Hongshen, Liu Yue, Ruan School of Computer Science Anhui University of Technology Maanshan243005 China School of Computer Science and Engineering Southeast University Nanjing210096 China Key Laboratory of Computer Network and Information Integration Ministry of Education Southeast University Nanjing210096 China

ISBN: (纸本)9783319270500

Multi-threshold segmentation is a basic and widely used technique in image segmentation. The key step of accomplishing this task is to find the optimal multi-threshold value, which in essence can be reduced to multi-objective optimization problem. The quantum particle-behaved swarm algorithm (QPSO) is an effective method to resolve the problem of this class. However in practice, we found the original QPSO has imperfections, such as the excessive dropping of the diversity of the population and trapping in local optimum. In order to improve the ability of searching the global optimum and accelerate the speed of convergence, we proposed an improved quantum-behaved particle swarm algorithm (IQPSO). The experiments showed that IQPSO was superior to PSO and QPSO on the searching of multi-threshold value in image segmentation under the premise of ensuring the accuracy of solutions. © Springer International Publishing Switzerland 2015.

关键词： Image segmentation

来源：评论

学校读者我要写书评

暂无评论

Research and implementation of CDP disaster recovery system based on oracle

International Journal of Control and Automation

引用

International Journal of Control and Automation 2015年第11期8卷 325-336页

作者： Ren, Yongjian Ye, Jiaolong Zhang, Jilin Zhou, Li Wang, Jue Zhang, Lei School of Computer Science and Technology Hangzhou Dianzi University Hangzhou China Key Laboratory of Complex Systems Modeling and Simulation Ministry of Education China College of Electrical Engineering Zhejiang University Hangzhou China Supercomputing Center of Computer Network Information Center Chinese Academy of Sciences Beijing China Computer Science Department Beijing University of Civil Engineering and Architecture Beijing China

The OraCDP disaster recovery system uses CDP disaster recovery technology based on the combination of block level, combining with the communication coupling between the underlying I/O and Oracle database. The experimental results show that the OraCDP system can not only maintain the normal operation of the original system without any negative influence, but also guarantee the recovery of data and service at specific time quickly, fully and accurately. © 2015 SERSC.

关键词： Recovery

来源：评论

学校读者我要写书评

暂无评论

An efficient storage technology for object-based distributed storage system

International Journal of Control and Automation

引用

International Journal of Control and Automation 2015年第11期8卷 337-348页

作者： Zhang, Jilin Su, Yucheng Wan, Jian Zhou, Li Wang, Jue Zhang, Lei College of Electrical Engineering Zhejiang University Hangzhou China School of Computer Science and Technology Hangzhou Dianzi University Hangzhou China Key Laboratory of Complex Systems Modeling and Simulation Ministry of Education China Supercomputing Center of Computer Network Information Center Chinese Academy of Sciences Beijing China Computer Science Department Beijing University of Civil Engineering and Architecture Beijing China

There have two effective ways to improve the overall efficiency of the object-based distributed storage system, one is network caching technology and the other is metadata server cluster load balancing strategy. Under the heterogeneous storage environments, object-based distributed file system face the key challenge of lacking caching mechanism for the high-frequency access files, metadata server load imbalance also reduce the overall efficiency. To address these challenges, we discuss the design and implementation of an object-based distributed file storage caching system, and propose a weight-based metadata server cluster load balancing strategy. It effectively improve the metadata processing capacity. Based on the results, it demonstrated the feasibility and the efficiency of our methods. © 2015 SERSC.

关键词： Metadata

来源：评论

学校读者我要写书评

暂无评论

A New Logistic Map Based Chaotic Biogeography-based Optimization Approach for Cluster Analysis

A New Logistic Map Based Chaotic Biogeography-based Optimiza...

引用

2016 IEEE International Conference on Progress in Informatics and Computing

作者： Shui-Hua Wang Hui-Min Lu Yu-Jie Li Yang Wang Zhi-Min Chen Yu-Min Wei Wen-Juan Jia Fang-Yuan Liu Yu-Dong Zhang School of Computer Science and Technology Nanjing Normal University Hunan Provincial Key Laboratory of Network Investigational Technology Hunan Policy Academy Department of Electrical Engineering The city college of New YorkCUNY Department of Mechanical and Control Engineering Kyushu Institute of Technology School of Information Engineering Yangzhou University School of Physics and Electronic Engineering Taizhou University School of Electronic Information Shanghai Dianji University School of Energy and Mechanical Engineering Nanjing Normal University Key Laboratory of Intelligent Computing and Information Processing in Fujian Provincial University Quanzhou Normal University

Cluster analysis is important in scientific and industrial fields. In this study, we proposed a novel chaotic biogeography-based optimization(CBBO) method, and applied it in centroid-based clustering methods. The results over three types of simulation data showed that this proposed CBBO method gave better performance than chaotic particle swarm optimization, genetic algorithm, firefly algorithm, and quantum-behaved particle swarm optimization. In all, our CBBO method is effective in centroid-based clustering.

关键词： chaotic biogeography-based optimization cluster analysis centroid-based clustering simulation particle swarm optimization

来源：评论

学校读者我要写书评

暂无评论

Improved protein residue-residue contacts prediction using learning-to-rank

Improved protein residue-residue contacts prediction using l...

引用

IEEE International Conference on Bioinformatics and Biomedicine (BIBM)

作者： Xiaoyang Jing Qiwen Dong School of Computer Science Fudan University Shanghai People's Republic of China Shanghai Key Laboratory of Intelligent Information Processing Shanghai People's Republic of China Key Laboratory of Network Oriented Intelligent Computation Harbin Institute of Technology Shenzhen Graduate School Shenzhen Guangdong People's Republic of China Institute for Data Science and Engineering East China Normal University Shanghai People's Republic of China

ISBN: (纸本)9781509016129

Protein residue-residue contacts dictate the topology of protein structure and play an important role in structural biology, especially in de novo protein structure prediction. Accurate prediction of residue contacts could improve the performance of de novo protein structure prediction methods. In this study, a novel method based on learning-to-rank (RRCRank) has been presented to predict protein residue-residue contacts. The proposed method formulates the contacts prediction problem as a ranking problem. Firstly, the contact probabilities of residue pairs are predicted by ensemble machine-learning classifiers and correlated mutations approaches. And then, the proposed method integrates the complementary outputs of machine-learning and correlated mutations approaches and uses the learning-to-rank algorithm to rank residue pairs based on their probabilities to be contacts. Benchmarked on the CASP11 dataset, the proposed method achieves an improved performance for all three categories of contacts (short-range, medium-range and long-range contacts), which shows the proposed method based on learning-to-rank could take advantage of machine-learning and correlated mutations approaches and could provide the state-of-the-art performance.

关键词： Proteins Protein engineering Training Predictive models Feature extraction Classification algorithms Prediction 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：