检索结果-内蒙古大学图书馆

RETRACTED: Graphic and haptic simulation for transvaginal cholecystectomy training in NOTES

Journal of Biomedical Informatics 2016年 60卷 410-421页

作者： Jun J. Pan Woojin Ahn Saurabh Dargar Tansel Halic Bai C. Li Ganesh Sankaranarayanan Kurt Roberts Steven Schwaitzberg Suvranu De State Key Laboratory of Virtual Reality Technology and Systems Beihang University Beijing China Center for Modeling Simulation and Imaging in Medicine Rensselaer Polytechnic Institute Troy USA Computer Science Department University of Central Arkansas Conway USA Gastrointestinal Surgery Yale School of Medicine Yale University New Heaven USA Department of Surgery Cambridge Health Alliance Harvard Medical School Boston USA

This article has been retracted: please see Elsevier Policy on Article Withdrawal ( http://***/locate/withdrawalpolicy ). This article has been retracted at the request of the Editor-in-Chief. The Publisher and Editor have been informed that the article was submitted to the journal without the consent of all the coauthors. The coauthor Suvranu De expressed concerns regarding the validity of some of the techniques and data reported in the paper, particularly in Figure 18 and Table 3. In addition, we identified in the article a significant portion of copied text that came from the following publications: Metaballs-based physical modeling and deformation of organs for virtual surgery Junjun Pan, Chengkai Zhao, Xin Zhao, Aimin Hao, Hong Qin The Visual computer , June 2015, Volume 31, Issue 6, pp 947–957 DOI: 10.1007/s00371-015-1106-y Virtual reality training and assessment in laparoscopic rectum surgery Jun J. Pan, Jian Chang, Xiaosong Yang, Hui Liang, Jian J. Zhang, Tahseen Qureshi, Robert Howell and Tamas Hickish The International Journal of Medical Robotics and computer Assisted Surgery , Volume 11, Issue 2, pages 194–209 DOI: 10.1002/rcs.1582 As such, this article represents an abuse of the scientific publishing system, which we believe warrants the retraction of the article. The scientific community takes a very strong view on this matter and apologies are offered to the readers of the journal that our processes, which have since been updated, did not adequately verify the assent of the coauthors and their approval of the paper’s content.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Autonomous migration of virtual machine based on OpenStack

引用

International Journal of Hybrid Information technology 2016年第8期9卷 65-84页

作者： Zhou, Li Yu, Zhuoer Zhang, Jilin Wan, Jian Wu, Yusen School of Computer and Technology Hangzhou Dianzi University Hangzhou310018 China Key Laboratory of Complex Systems Modeling and Simulation Ministry of Education Hangzhou China College of Electrical Engineering Zhejiang University Hangzhou310058 China School of Information and Electronic engineering Zhejiang University of Science & Technology Hangzhou310023 China Zhejiang Provincial Engineering Center on Media Data Cloud Processing and Analysis HangzhouZhejiang China

For the problem of compute nodes load unbalance leads to the overload node impact VM performance and the underload node waste electrical energy. Dynamic VM consolidation is an efficient approach for improving the utilization of servers and reducing energy costs. In this paper, we introduce dynamic consolidation into OpenStack and implement AMVM based on OpenStack. AMVM collect and analyze all performance data of VM and compute node in OpenStack. Then AMVM automatically schedules VM live migrate to the most appropriate node according to the real-time load of all compute nodes. Then we use hybrid-copy instead of pre-copy in AMVM to improve the efficiency of VM live migration. Finally, we analyze the performance of hybrid-copy, hybrid-copy can reduce page faults compared with post-copy and reduce total data transferred compared with pre-copy. © 2016 SERSC.

关键词： Virtual machine

来源：评论

学校读者我要写书评

暂无评论

Graphic and haptic simulation for transvaginal cholecystectomy training in NOTES

引用

Journal of Biomedical Informatics 2016年 60卷 410-421页

作者： Pan, Jun J. Ahn, Woojin Dargar, Saurabh Halic, Tansel Li, Bai C. Sankaranarayanan, Ganesh Roberts, Kurt Schwaitzberg, Steven De, Suvranu State Key Laboratory of Virtual Reality Technology and Systems Beihang University Beijing China Center for Modeling Simulation and Imaging in Medicine Rensselaer Polytechnic Institute Troy United States Computer Science Department University of Central Arkansas Conway United States Gastrointestinal Surgery Yale School of Medicine Yale University New Heaven United States Department of Surgery Cambridge Health Alliance Harvard Medical School Boston United States

Background: Natural Orifice Transluminal Endoscopic Surgery (NOTES) provides an emerging surgical technique which usually needs a long learning curve for surgeons. Virtual reality (VR) medical simulators with vision and haptic feedback can usually offer an efficient and cost-effective alternative without risk to the traditional training approaches. Under this motivation, we developed the first virtual reality simulator for transvaginal cholecystectomy in NOTES (VTEST™). Methods: This VR-based surgical simulator aims to simulate the hybrid NOTES of cholecystectomy. We use a 6DOF haptic device and a tracking sensor to construct the core hardware component of simulator. For software, an innovative approach based on the inner-spheres is presented to deform the organs in real time. To handle the frequent collision between soft tissue and surgical instruments, an adaptive collision detection method based on GPU is designed and implemented. To give a realistic visual performance of gallbladder fat tissue removal by cautery hook, a multi-layer hexahedral model is presented to simulate the electric dissection of fat tissue. Results: From the experimental results, trainees can operate in real time with high degree of stability and fidelity. A preliminary study was also performed to evaluate the realism and the usefulness of this hybrid NOTES simulator. Conclusions: This prototyped simulation system has been verified by surgeons through a pilot study. Some items of its visual performance and the utility were rated fairly high by the participants during testing. It exhibits the potential to improve the surgical skills of trainee and effectively shorten their learning curve. © 2016 Elsevier Inc.

关键词： Virtual reality

来源：评论

学校读者我要写书评

暂无评论

The Gyrokinetic Particle simulation of Fusion Plasmas on Tianhe-2 Supercomputer

The Gyrokinetic Particle Simulation of Fusion Plasmas on Tia...

引用

Workshop on Latest Advances in Scalable Algorithms for Large-Scale Systems (ScalA)

作者： Endong Wang Shaohua Wu Qing Zhang Jun Liu Wenlu Zhang Zhihong Lin Yutong Lu Yunfei Du Xiaoqian Zhu State Key Laboratory of High-end Server & Storage Technology Inspur Jinan China Institute of Physics Chinese Academy of Science Beijing China Fusion Simulation Center Peking University Beijing China Department of Physics and Astronomy University of California Irvine California USA School of Computer Science National University of Defense Technology Changsha China National Supercomputer Center in Guangzhou Sun Yat-sen University Guang Zhou China Academy of Ocean Science and Engineering National University of Defense Technology Changsha China

ISBN: (纸本)9781509052233

We present novel optimizations of the fusion plasmas simulation code, GTC on Tianhe-2 supercomputer. The simulation exhibits excellent weak scalability up to 3072 31S1P Xeon Phi co-processors. An unprecedented up to 5.8× performance improvement is achieved for the GTC on Tianhe-2. An efficient particle exchanging algorithm is developed that simplifies the original iterative scheme to a direct implementation, which leads to a 7.9× performance improvement in terms of MPI communications on 1024 nodes of Tianhe-2. A customized particle sorting algorithm is presented that delivers a 2.0× performance improvement on the co-processor for the kernel relating to the particle computing. A smart offload algorithm that minimizes the data exchange between host and co-processor is introduced. Other optimizations like the loop fusion and vectorization are also presented.

关键词： Kernel Supercomputers Physics Computational modeling Scalability Optimization Plasmas

来源：评论

学校读者我要写书评

暂无评论

Aggregation Encoding: Reducing Network Traffic for Big Data Erasure-Coded Storages

Aggregation Encoding: Reducing Network Traffic for Big Data ...

引用

International Conference on Cyber-Enabled Distributed Computing and Knowledge Discovery, CyberC

作者： Jing Zhang Shanshan Li Xiangke Liao Xiaodong Liu School of Computer Science and Technology National University of Defence Technology Changsha China Science and Technology on Complex Aviation Systems Simulation Laboratory Beijing China

ISBN: (纸本)9781467392013

Erasure-coded storages provide data reliability for big data archiving and backup with high storage efficiency. However, erasure code generates a large amount of data transmission traffic in both encoding (write) and decoding (repair) which costs substantial bandwidth in the network. Most of the existing work focus on the decoding cost due to the importance of data repair, but unfortunately overlooks the encoding cost. In this paper, we propose Aggregation Encoding for reducing the bandwidth cost of the encoding phase in erasure-coded storages. Aggregation Encoding takes inspiration from network coding to enforce encoding through data transmission, which reduces redundant information transmitting. The extensive analysis and experimental results demonstrate that Aggregation Encoding reduces bandwidth cost by 20% in average.

关键词： Encoding Bandwidth Routing Vegetation Network topology Topology Approximation methods

来源：评论

学校读者我要写书评

暂无评论

On-board robust vehicle detection using knowledge-based features and motion trajectory

International Journal of Signal Processing, Image Processing...

引用

International Journal of Signal Processing, Image Processing and Pattern Recognition 2015年第2期8卷 201-212页

作者： Li, Wenhui Liu, Peixun Wang, Ying Ni, Hongyin Wen, Chao Fan, Jiahao College of Computer Science and Technology Jilin University China State Key Laboratory of Automotive Simulation and Control Jilin University China

This paper presents a robust and efficient method for vehicle detection in dynamic traffic environments. First, two adaptive vehicle hypothesis generation methods based on shadow and vehicle wave are presented, and then we assemble these two features into vehicle hypothesis. A hypothesis verification algorithm based on vehicle motion trajectory is proposed, the on-line hypothesis verification algorithm based on vehicle motion trajectory can not only reduce the false positive alarm caused by interferences, but also handle the problem that the classifiers generated in the off-line training phase is closely related to the diversity of positive and negative samples. Quantitative analysis on both public vehicle image datasets and real-time video presents a result of 85.58% detection rate with 4.13% false positive rate. And our algorithm could run as fast as 40ms/frame on PC platform. © 2015 SERSC.

关键词： Vehicles

来源：评论

学校读者我要写书评

暂无评论

A Service Mining Scheme Based on Semantic for Internet of Things

引用

Chinese Journal of Electronics 2014年第2期23卷 236-242页

作者： LI Xinming SUN Yan The Science and Technology on Complex Electronic System Simulation Laboratory Academy of Equipment The School of Computer Science Beijing University of Posts and Telecommunication

As the development of Internet of things(IOT), massive sensors have been deployed as the public infrastructure. With the development of in-depth applications in IOT, service discovery and composition are challenges to the end users. To handle this challenge, we develop a service mining scheme based on semantic for IOT to provide users with interesting composite services. In this scheme, services can be combined and recommended to users actively according to the calculation of service similarity and an updatable semantic database. By the results of service similarity, useless compositions can be filtered out so that energy consumption on service flooding will be reduced. The update strategy of semantic database is also given out, by which the composite services can keep up with time and be more applicative. The benefits of the proposed method are that all operations such as calculating, filtering, and updating are simple enough to be performed in sensor networks.

关键词： Internet of things Service mining Semantic database Service similarity Service composition

来源：评论

学校读者我要写书评

暂无评论

The PID algorithm for multi-vehicles cruise control in platoon

引用

Journal of Information and Computational Science 2015年第10期12卷 3899-3906页

作者： Zhang, Jindong Li, Zhijian Meng, Weibin Jiang, Haofeng Liu, Qiangqiang Wan, Yanchen State Key Laboratory of Automotive Simulation and Control Jilin University Changchun China College of Computer Science and Technology Jilin University Changchun China College of Software Jilin University Changchun China

An efficient proportional-integral-derivative (PID) control algorithm is introduced for the control problem of vehicle cooperative adaptive cruise in platoon. In the algorithm, acceleration and speed are controlled for keeping safe following distance. We evaluate the algorithm experimentally using simulation method and compared it with the no PID control algorithm. It reveals very encouraging simulation results indicate effectiveness of the PID control algorithm. 1548-7741/Copyright © 2015 Binary Information Press

关键词： Two term control systems

来源：评论

学校读者我要写书评

暂无评论

Research on Prediction Method for Pivotal Indicator of Hospital Medical Quality Using Decision Tree

Research on Prediction Method for Pivotal Indicator of Hospi...

引用

2015 6th IEEE International Conference on Software Engineering and Service Science(ICSESS 2015)

作者： Liujian Chen Lujia Bi Huayou Si Jilin Zhang Yongjian Ren Key Laboratory of Complex System Modeling and Simulation Ministry of Education Department of Computer Science and Technology Hangzhou Dianzi University Department of Information First Hospital of Jiaxing

Indicators of medical quality is the main basis of medical quality evaluation, predictive analyzing the indicators by using data mining technology, we can find and solve the problems of hospital quality management more timely. The study, basing on the medical homepage records, analyzes the key indicators of the hospital medical quality by decision tree C4.5 algorithm. Decision tree is a prediction model which can assist hospital to make related decision on medical quality management issues. By using decision tree C4.5 algorithm with appropriate modification, a high quality model of decision tree can be made. It can not only do the statistic of medical quality indicators, but also predict the indicators with high relative accuracy to improve hospital’s medical quality management.

关键词： medical quality data mining decision tree C4.5

来源：评论

学校读者我要写书评

暂无评论

Hybrid phase-locked loop with fast locking time and low spur in a 0.18-μm CMOS process

引用

Chinese Physics B 2014年第7期23卷 748-753页

作者：朱思衡司黎明郭超史君宇朱卫仁 Beijing Key Laboratory of Millimeter Wave and Terahertz Technology Department of Electronic Engineering School of Information and ElectronicsBeijing Institute of Technology Advanced Computing and Simulation Laboratory (AχL) Department of Electrical and Computer Systems EngineeringMonash University

We propose a novel hybrid phase-locked loop （PLL） architecture for overcoming the trade-off between fast locking time and low spur. To reduce the settling time and meanwhile suppress the reference spurs, we employ a wide-band single-path PLL and a narrow-band dual-path PLL in a transient state and a steady state, respectively, by changing the loop bandwidth according to the gain of voltage controlled oscillator （VCO） and the resister of the loop filter. The hybrid PLL is implemented in a 0.18-μm complementary metal oxide semiconductor （CMOS） process with a total die area of 1.4×0.46 mm2. The measured results exhibit a reference spur level of lower than -73 dB with a reference frequency of 10 MHz and a settling time of 20 μs with 40 MHz frequency jump at 2 GHz. The total power consumption of the hybrid PLL is less than 27 mW with a supply voltage of 1.8 V.

关键词： phase-locked loop （PLL） fast locking time low spur complementary metal oxide semiconductor（CMOS）

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：