检索结果-内蒙古大学图书馆

Annual International Conference of the IEEE engineering in Medicine and Biology Society

作者： Christos G. Bampis Georgia D. Koutsouri Elias Berdouses Evanthia E. Tripoliti Dimitra Iliopoulou Dimitrios Koutsouris Constantine Oulis Dimitrios I. Fotiadis School of Electrical and Computer Engineering National Technical University of Athens Biomedical Engineering Laboratory National Technical University of Athens Dept. of Paediatric Dentistry Dental School National and Kapodistrian University of Athens Unit of Medical Technology and Intelligent Information Systems Dept. of Materials Science and Engineering University of Ioannina

ISBN: (纸本)9781424479276

The aim of this work is to present a modification of the Random Walker algorithm for the segmentation of occlusal caries from photographic color images. The modification improves the detection and time execution performance of the classical Random Walker algorithm and also deals with the limitations and difficulties that the specific type of images impose to the algorithm. The proposed modification consists of eight steps: 1) definition of the seed points, 2) conversion of the image to gray scale, 3) application of watershed transformation, 4) computation of the centroid of each region, 5) construction of the graph, 6) application of the Random Walker algorithm, 7) smoothing and extraction of the perimeter of the regions of interest and 8) overlay of the results. The algorithm was evaluated using a set of 96 images where 339 areas of interest were manually segmented by an expert. The obtained segmentation accuracy is 93%.

关键词：

来源：评论

学校读者我要写书评

暂无评论

The practical quality model for cloud learning system

The practical quality model for cloud learning system

引用

5th FTRA International Conference on computer science and its Applications, CSA 2013

作者： Kang, Anna Barolli, Leonard Jeong, Hwayoung Park, Jonghyuk Choi, Hae-Gill Dongguk University Seoul Korea Republic of 3-30-1 Wajiro-Higashi Higashi-Ku Fukuoka 811-0295 Japan Humanitas College Kyunghee University Hoegi-dong Seoul 130-701 Korea Republic of Department of Computer Science and Engineering Seoul National University of Science and Technology Seoul Korea Republic of Dept. of Information and Communication Kyunghee Cyber University Hoegi-dong Seoul 130-701 Korea Republic of

ISBN: (纸本)9783642416736

Learning system has increase user needs with many and various request for more convenient and efficient learning performance. In order to provide this point to user, the develop method for learning system needs to change to more recent it and to apply the characteristics fitting on their system. However the research to identify the quality factors for cloud learning system is very lacked. In this paper, we propose the practical quality model for cloud learning system. For this purpose, we identify their criteria from the existing one, IS (information system) factors from Mclean and Dealon Model. By this proposal, we want to suggest basic criteria fitting on the important factor for cloud learning system. © 2014 Springer-Verlag Berlin Heidelberg.

关键词： Learning systems

来源：评论

学校读者我要写书评

暂无评论

A confabulation model for abnormal vehicle events detection in wide-area traffic monitoring

A confabulation model for abnormal vehicle events detection ...

引用

IEEE International Multi-Disciplinary Conference on Cognitive Methods in Situation Awareness and Decision Support (CogSIMA)

作者： Qiuwen Chen Qinru Qiu Qing Wu Morgan Bishop Mark Barnell Dept. of Electrical Engineering & Computer Science Syracuse University Syracuse NY USA Air Force Research Laboratory Information Directorate Rome NY USA Air Force Research Laboratory Information Directorate Rome NY US

The advanced sensing and imaging technologies of today's digital camera systems provide the capability of monitoring traffic flows in a very large area. In order to provide continuous monitoring and prompt anomaly detection, an abstract-level autonomous anomaly detection model is developed that is able to detect various categories of abnormal vehicle events with unsupervised learning. The method is based on the cogent confabulation model, which performs statistical inference functions in a neuromorphic formulation. The proposed approach covers the partitioning of a large region, training of the vehicle behavior knowledge base and the detection of anomalies according to the likelihood-ratio test. A software version of the system is implemented to verify the proposed model. The experimental results demonstrate the functionality of the detection model and compare the system performance under different configurations.

关键词： Vehicles Training Computational modeling Monitoring Feature extraction Training data Knowledge based systems

来源：评论

学校读者我要写书评

暂无评论

Resource allocation and power control scheme for interference avoidance in an LTE-advanced cellular networks with device-to-device communication

International Journal of Control and Automation

引用

International Journal of Control and Automation 2013年第1期6卷 181-190页

作者： Kim, Tae-Sub Lee, Kwang-Hyung Ryu, Seungwan Cho, Choong-Ho Dept. of Computer and Information Science Korea University Chungnam Korea Republic of Dept. of Information Systems Chung-Ang University Gyeonggi Korea Republic of Dept. of Bio and Brain Engineering KAIST Daejeon Korea Republic of

In this paper, we propose a resource allocation and Tx power control scheme, called resource allocation and power control (RAPC) in an LTE-Advanced device-to-device (D2D) network. In the proposed scheme, the macro base station (mBS) and D2D senders (D2DSs) service macro user equipment (mUEs) and D2D receivers (D2DRs) use the different frequency bands and Tx power chosen as D2D links' locations in inner and outer zones to reduce interference substantially. We analyze and compare the proposed scheme and random resource allocation (RRA) scheme with fractional frequency reuse (FFR) systems in terms of the system throughput for DL and outage probability according to the number of D2D user's (D2DR) traffic density. Simulation results show that the RAPC scheme has better performance than the random resource allocation (RRA) scheme performance in terms of the system throughput and outage probability for mUEs and D2DRs.

关键词： Resource allocation

来源：评论

学校读者我要写书评

暂无评论

The MAC protocol optimization of industrial wireless ad-hoc network

引用

Sensors and Transducers 2013年第10期157卷 153-159页

作者： Wang, Jun Wang, Jian Pang, Yujun Dept. of Computer Science and Technology Shenyang University of Chemical Technology 110142 China Dept. of Information Engineering Shenyang University of Chemical Technology 110142 China

This paper focuses on the study of MAC protocol in industrial wireless ad-hoc network, aiming at improving the fairness of industrial wireless ad-hoc network and quality of service (QOS). As a result, Hybrid Bi-channel Improvement of CSMA/CA mechanism and Dynamic Time Slot of TDMA mechanism MAC (B-T-MAC) is proposed. This protocol using the super frame structure, adopts the methods of bi-channel improvement and dynamic slot to optimize and improve CSMA/CA and TDMA mechan QOS ism respectively. The simulation results show that B-T-MAC can effectively enhance the overall performance of industrial wireless ad-hoc network, which outperforms Hybrid CSMA and TDMA MAC (C-T-MAC) significantly in throughput and time delay. © 2013 IFSA.

关键词： Quality of service

来源：评论

学校读者我要写书评

暂无评论

The mac protocol optimization based on physical layer's information feedback

引用

BioTechnology: An Indian Journal 2013年第10期8卷 1376-1383页

作者： Jun, Wang Jian, Wang Yujun, Pang Dept. of Computer Science and Technology Shenyang University of Chemical Technology Shenyang China Dept. of Information Engineering Shenyang University of Chemical Technology Shenyangÿ China

In this paper, we present a cross-layer optimization scheme to improve the fairness and quality of service (QoS) of wireless ad-hoc network. As for the physical layer's information feedback, it is mainly the physical link quality. We adopt multi-access technique such as TDMA and a fusion of technologies, such as Multiple -Input and Multiple-Output (MIMO) and Orthogonal FrequencyDivisionMultiplexing (OFDM). Using multi-user detection to physical link quality, to achieve the joint cross-layer optimization design of PHY-MAC, we propose the MAC protocol with RTS/CTS reservation mechanism based on a distribution of slots (RDTDMA). The objective is to improve energy utilization, reduce bit error rate (BER) and alleviate network congestion effectively. The experimental results show that the cross-layer optimization can effectively improve the overall performance of wireless ad-hoc network, significantly in energy saving and throughput. © 2013 Trade science Inc. - INDIA.

关键词： Crude oil

来源：评论

学校读者我要写书评

暂无评论

A content-adaptive image enlargement scheme based on iterative back-projection

A content-adaptive image enlargement scheme based on iterati...

引用

International Conference on information science, Electronics and Electrical engineering (ISEEE)

作者： Min-Kuan Chang Ming-Cheng Su Guo-Shiang Lin Feng-Tsun Chien Graduate Institute of Communication Engineering National Chung Hsing University Taichung Taiwan Dept. of Computer Science and Information Engineering Da-Yeh University Yuan Lin Taiwan Dedepartment of Electronics Engineering National Chiao Tung University Taiwan

In this paper, we propose an adaptive image enlargement scheme based on iterative back-projection. Initial estimates of each enlarged image can be individually created from the spatial and temporal domains by using sub-pixel interpolation and sub-pixel motion estimation. Then, based on the initial estimates and image content, reconstructed images are derived by using a modified iterative back-projection technique and fused into an enlarged image. Finally, a low-pass filter as a post-processing is applied to reduce the blocking artifacts in the reconstructed high-resolution images. Our experiment results demonstrate that, in terms of PSNR and NQM, the proposed scheme is superior to existing methods.

关键词： Interpolation Image reconstruction PSNR Image edge detection Image resolution Motion estimation Image sequences

来源：评论

学校读者我要写书评

暂无评论

IPv6 operations and deployment scenarios over SDN

IPv6 operations and deployment scenarios over SDN

引用

Asia-Pacific Network Operations and Management Symposium (APNOMS)

作者： Chia-Wei Tseng Sheue-Ji Chen Yao-Tsung Yang Li-Der Chou Ce-Kuen Shieh Sheng-Wei Huang Dept. of Computer Science and Information Engineering National Central University Taoyuan Taiwan Broadband Network Laboratory Chunghwa Telecom Laboratories Taoyuan Taiwan Narional Center for High-performance Computing Hsinchu Taiwan Dept. of Electrical Engineering National Cheng Kung University Tainan Taiwan

ISBN: (纸本)9781479957415

IPv6 is a technology that provides enormous address space and end-to-end communication, features that are required in the context of the device automation integration for future network. The transition to IPv6 holds the future of the internet infrastructure. Software-defined networking (SDN) defines a new concept for computer networks that can separate and provide abstract elements of network devices. IPv6 SDN has the potential to revolutionize the network design, construct and operate networks to achieve more efficient business network agility. In this paper, we will discuss the main architectures of SDN and illustrate how IPv6 can be deployed and integrated in SDN technologies using OpenFlow mechanisms. We will also discuss the IPv6 impact on link performance and deployment scenarios.

关键词： computer architecture Switches IP networks Internet Broadband communication Performance evaluation Security

来源：评论

学校读者我要写书评

暂无评论

Time delay induced multistability and complex dynamics in an impulsive model of endocrine regulation

Time delay induced multistability and complex dynamics in an...

引用

European Control Conference (ECC)

作者： Zhanybai T. Zhusubaliyev Alexander N. Churilov Alexander Medvedev Dept. of Computer Science South West State University Kursk Russia Faculty of Mathematics and Mechanics St. Petersburg State University St. Petersburg Russia Information Technology Uppsala University Uppsala Sweden

ISBN: (纸本)9781479947287

The effects caused by the introduction of a time delay in the continuous part of an impulsive (hybrid) model of endocrine feedback regulation are studied by bifurcation analysis. It is concluded that larger (in some well-defined sense) values of the time delay give rise to a broad range of nonlinear dynamics phenomena that have not been observed for the smaller ones. Among such behaviors are e.g. border-collision bifurcations, bistability, and quasiperiodic solutions. The reason for the more complex dynamics exhibited by the model in this case is a discontinuity of the Jacobian of a discrete mapping describing the propagation of the model dynamics from one firing of the impulsive feedback to another.

关键词： Bifurcation Delay effects Biochemistry Mathematical model Biological system modeling Manifolds

来源：评论

学校读者我要写书评

暂无评论

A systematic methodology for OS benchmark characterization 13

A systematic methodology for OS benchmark characterization

引用

2013 Research in Adaptive and Convergent Systems, RACS 2013

作者： Chen, Shuo-Hung Lin, Hsiao-Mei Chen, Kuo-Yi Chang, Yuan-Hao Yew, Pen-Chung Ho, Chien-Chung Dept. of Computer Science National Tsing Hua University Taiwan Dept. of Computer Science Information Engineering National Formosa University Taiwan Institute of Information Science Academia Sinica Taiwan Dept. of Computer Science and Information Engineering National Taiwan University Taiwan

ISBN: (纸本)9781450323482

Using benchmarks to evaluate operating systems is a common and important approach. However, determining which benchmarks to use for such evaluation requires very careful consideration. It has been found that a seemingly naive change of system configuration or input set could lead to drastic change of benchmark characteristics, and could also lead to misleading or incorrect results. Some OS benchmark suites may also include too many benchmark programs with very similar characteristics that could give biased results against, or in favor of, certain kernel behavior. Hence, we need to determine the characteristics of benchmark programs in order to come up with an appropriate benchmark suite for such evaluation, and to interpret the measured results more precisely and correctly. Although there have been many tools developed to help on profiling an OS and to characterize its run-time behavior, the collected data by those tools are often very large and complex. It is extremely time consuming, labor intensive, and error prone to analyze the large volume of measured results, and to determine the characteristics of a suite of benchmark programs. In this work, we propose to use machine-learning techniques to help on analyzing and characterizing OS benchmark programs based on the traced OS kernel events. In this work, a systematic methodology is proposed to automatically characterize benchmarks. We found that the characterized OS behavior could help developers to choose appropriate applications to benchmark operating systems. © 2013 ACM.

关键词： Learning systems

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：