检索结果-内蒙古大学图书馆

NETWORKS International Telecommunications Network Strategy and Planning Symposium

作者： J. Tapolcai P. Babarczi Pin-Han Ho Dept. of Telecommunications and Media Informatics Budapest University of Technology and Economics Hungary Dept. of Electrical and Computer Engineering University of Waterloo Canada

In this paper, a novel approach for availability evaluation is presented. In order to precisely capture the features of practical network operation and improve the accuracy in the availability evaluation, the dependency of network element failures is characterized by failure states (FS). For this purpose, a method that generating a failure state list for protection is developed and embedded in the proposed survivable routing algorithm such that the pre-defined connection availability can be guaranteed as simple as by protecting a single FS failure. Built on the availability evaluation a novel availability-constrained survivable routing algorithm, called Generalized Dedicated Protection (GDP), is introduced for circuit switched mesh networks. The proposed algorithm inherits the simplicity of dedicated protection mechanisms while offering the connection availability guarantee in presence of the network topological limitation that has been taken as the greatest challenge in the related research effort. Finally, extensive simulation is conducted to verify the advantages gained in the proposed GDP method compared with a number of previously reported counterparts.

关键词： Switches Heuristic algorithms

来源：评论

学校读者我要写书评

暂无评论

H∞O gain-scheduling based control of the heavy vehicle model, a TP model transformation based control

H∞O gain-scheduling based control of the heavy vehicle mode...

引用

2008 IEEE International Conference on Fuzzy Systems, FUZZ 2008

作者： Petres, Zoltán Nagy, Szabolcs Gáspar, Péter Baranyi, Peter Dept. of Telecommunications and Media Informatics Budapest University of Technology and Economics Kende utca 13-17 1111Budapest Hungary Systems and Control Lab. Computer and Automation Research Institute Hungarian Academy of Sciences Kende utca 13-17 1111Budapest Hungary

ISBN: (纸本)9781424418190

This paper is focusing on rollover prevention to provide a heavy vehicle with the ability to resist overturning moments generated during cornering. A combined yaw-roll model including the roll dynamics of unsprung masses is studied. This model is nonlinear with respect to the velocity of the vehicle. In our model the velocity is handled as an LPV scheduling parameter. The Linear Parameter-Varying model of the heavy vehicle is transformed Into a proper polytopic form by Tensor Product model transformation. The H∞ gain-scheduling based control is Immediately applied to this form for the stabilization. The effectiveness of the designed controller is demonstrated by numerical simulation. © 2008 IEEE.

关键词： Scheduling

来源：评论

学校读者我要写书评

暂无评论

Project management stage mutations within agile methodological framework process transformations

引用

WSEAS Transactions on Information Science and Applications 2008年第5期5卷 776-785页

作者： Markopoulos, Evangelos Bilbao, Javier Bravo, Eugenio Stoilov, Todor Vos, Tanjia E.J. Talamanca, Carlo Figa Reschwamm, Katrin Department of Informatics University of Piraeus 80 Karaoli and Dimitriou Str. Piraeus Greece Applied Mathematics Dept. University of the Basque Country Alda. Urkijo s/n. Bilbao Spain Dept. Hierarchical Systems Institute of Computer and Communication Systems Bulgarian Academy of Sciences Acad. Bonchev str. Sofia Bulgaria Information Technology Institute University of Valencia Camino de Vera s/n Valencia Spain Technology Division - ICT Area Via Giacomo Peroni 386 Roma Italy The Fraunhofer Institute for Factory Operation and Automation Fraunhofer IFF ICCL Sandtorstrasse 22 Magdeburg Germany

Projects are living entities. They are born with the project idea and end with the project termination. The time in between can last for many years, in most of the cases, requiring continuous implementation and management effort. Over the time project changes on requirements change the implementation process and in turn the management process, the maintenance process and so on. In order to maintain qualitative and quantitative project results both the project implementation and management processes need to be adjusted in the overall project changes and environment. This adjustment can be made by using agile project management methodologies, defining processes based on the identification of the project goals, constraints and expatiations. Unfortunately that is not enough, and projects, especially software projects are still in implementation and management crisis. This paper presents the concept of process mutation on project management methodological frameworks as a supplementary method to the agile models and agility the concept.

关键词： Project Management Agility Process Mutation Process Framework

来源：评论

学校读者我要写书评

暂无评论

Active mask segmentation for the cell-volume computation and Golgi-body segmentation of hela cell images

Active mask segmentation for the cell-volume computation and...

引用

IEEE International Symposium on Biomedical Imaging

作者： Gowri Srinivasa Matthew Fickus Manuel N. Gonzalez-Rivero Sarah Yichia Hsieh Yusong Guo Adam D. Linstedt Jelena Kovacevic Department of Biomedical Engineering Center for Bioimage Informatics Department of Mathematics and Statistics Air Force Institute of Technology USA Dept. of Electrical and Computer Engineering Carnegie Mellon University Pittsburgh U.S.A. Dept. of Biomedical Engineering and Center for Bioimage Informatics Carnegie Mellon University Pittsburgh U.S.A. Department of Biological Sciences Carnegie Mellon University Pittsburgh USA

We present a novel active mask framework for the segmentation of fluorescence microscope images of cells, and in particular, for the segmentation of the Golgi body as well as cell- volume computation. We demonstrate that the algorithm is able to efficiently segment a stack of images and successfully assign multiple pieces of the Golgi body in a 2D image to the cell to which they belong. Further, we demonstrate that our algorithm is more accurate than manual segmentation of these images.

关键词： Image segmentation Active contours Level set Fluorescence Microscopy Topology Cells (biology) Proteins Testing Convergence

来源：评论

学校读者我要写书评

暂无评论

An architecture of photo core transform in HD photo coding system for embedded systems of various bandwidths

An architecture of photo core transform in HD photo coding s...

引用

IEEE Asia-Pacific Conference on Circuits and Systems

作者： Koichi Hattori Hiroshi Tsutsui Hiroyuki Ochi Yukihiro Nakamura Dept. of Communications and Computer Engineering Graduate School of Informatics Kyoto University Sakyo Kyoto Japan Dept. of Information Systems Engineering Graduate School of Information Science and Technology Osaka University Suita Osaka Japan Research Organization of Science and Engineering Ritsumeikan University Shiga Japan Research Organization of Science and Engineering Ritsumeikan University Kusatsu Shiga Japan

In this paper, we propose a novel architecture of photo core transform (PCT) which is used as transformation of image data into frequency domain in HD Photo, an emerging image coding system developed by Microsoft. In order to support various memory bus bandwidths used in system-on-a-chip (SoC) design, an implementation for each bandwidth can be derived based on our architecture. In addition, in order to reduce the local memory size and the traffic between the main and local memories, we propose a novel data transfer and storing scheme for PCT. The experimental results show that hardware modules corresponding to the given bus bandwidths can be reasonably derived from the proposed architecture.

关键词： High definition video Embedded system Bandwidth Image coding Discrete transforms Frequency domain analysis System-on-a-chip Data engineering Hardware Streaming media

来源：评论

学校读者我要写书评

暂无评论

The Importance of Biometric Sensor Continuous Secure Monitoring

The Importance of Biometric Sensor Continuous Secure Monitor...

引用

International Conference on Digital Information Management (ICDIM)

作者： Alexandras Papanicolaou Christos Ilioudis Christos K. Georgiadis Elias Pimenidis Dept. of Computer & Communication Engineering University of Thessaly Volos Greece Dept. of Information Technology Technical Educational Institute of Thessaloniki Greece Dept. of Applied Informatics University of Macedonia Thessaloniki Greece School of Computing and Technology University of East London United Kingdom

ISBN: (纸本)9781424429165

The security of a biometric information system depends partially on the ability of the biometric information sensor to authenticate itself securely to the processing centre it usually interacts with, thus ensuring that the securely transmitted biometric data has not been constructed by an attacker. The biometric sensors of a biometric information system are often physically exposed to potential adversaries who may manipulate them and therefore compromise the security of the system. Such attacks can be detected by continuous and secure sensor monitoring. The proposed scheme is based on the Kerberos protocol for dealing with sensor authentication issues. Using authenticated control/data packets its functionality has been extended to provide secure sensor monitoring, which can help in detecting physical attacks on the sensor itself.

关键词： Sensors Biometric Information Accidents,emergencies and safety Secure computer based information systems Security Kerberos

来源：评论

学校读者我要写书评

暂无评论

Evaluation of the multicast mode of MBMS

Evaluation of the multicast mode of MBMS

引用

18th IEEE International Symposium on Personal, Indoor and Mobile Radio Communication

作者： Alexiou, Antonios Bouras, Christos Kokkinos, Vasileios Rekkas, Evangelos Research Academic Computer Technology Institute Computer Engineering and Informatics Dept. Univ. of Patras Greece

ISBN: (纸本)9781424411436

Multicasting is an efficient way for delivering rich multimedia applications to large user groups as it allows the transmission of packets to multiple destinations using fewer network resources. Content and service providers are increasingly interested in supporting multicast communications over wireless networks and in particular over Universal Mobile Telecommunications System (UMTS). To this direction, the third Generation Partnership Project (3GPP) is currently standardizing the Multimedia Broadcast/Multicast Service (MBMS) framework of UMTS. In this paper, we present an overview of the MBMS multicast mode of UMTS. We analytically present the multicast mode of the MBMS and analyze its performance in terms of packet delivery cost under various network topologies, cell environments and multicast users' distributions. Furthermore, for the evaluation of the scheme, we consider different transport channels for the transmission of the data over the UTRAN interfaces and propose a cost based scheme for the efficient radio bearer selection that minimizes the packet delivery cost.

关键词： Multicasting

来源：评论

学校读者我要写书评

暂无评论

Substring matching in P2P publish/subscribe data management networks

Substring matching in P2P publish/subscribe data management ...

引用

23rd International Conference on Data Engineering, ICDE 2007

作者： Aekaterinidis, Ioannis Triantafillou, Peter R and A Computer Technology Institute Dept. Computer Engineering and Informatics University of Patras Greece

ISBN: (纸本)1424408032

The content-based publish/subscribe (pub/sub) paradigm for system design is becoming increasingly popular, offering unique benefits for a large number of data-intensive applications. Coupled with the peer-to-peer technology, it can serve as a central building block for such applications deployed over a large-scale network infrastructure. A key problem toward the creation of large-scale content-based pub/sub infrastructures relates to dealing efficiently with continuous queries (subscriptions) with rich predicates on string attributes;in this work we study the problem of efficiently and accurately matching substring queries to incoming events. © 2007 IEEE.

关键词： Distributed computer systems

来源：评论

学校读者我要写书评

暂无评论

MBMS power planning in macro and micro cell environments

MBMS power planning in macro and micro cell environments

引用

12th IEEE Symposium on computers and Communications

作者： Alexiou, Antonios Bouras, Christos Kokkinos, Vasileios Rekkas, Evangelos Research Academic Computer Technology Institute Greece Computer Engineering and Informatics Dept. Univ. of Patras Greece

ISBN: (纸本)9781424415205

Multimedia Broadcast Multicast Services (MBMS), introduced in Third Generation Partnership Project (3GPP) Release 6, is a point-to-multipoint downlink bearer service that addresses the need for the efficient usage of the expensive radio resources. Power control is one of the most important aspects in MBMS due to the fact that Node B's transmission power is a limited resource and must be shared among all MBMS users in a cell. Consequently, the analysis of transmitted power plays a fundamental role in the planning and optimization process of Universal Mobile Telecommunications System (UMTS) radio access networks. This paper investigates several factors affecting Node B's transmission power levels such as, cell deployment, propagation models, Quality of Service (QoS) requirements, users' distributions and mobility issues. Finally different transport channels for the transmission of the multicast data over the UTRAN interfaces are considered.

关键词： Universal Mobile Telecommunications System

来源：评论

学校读者我要写书评

暂无评论

Cost analysis of the MBMS multicast mode of UMTS

Cost analysis of the MBMS multicast mode of UMTS

引用

12th IEEE Symposium on computers and Communications

作者： Alexiou, Antonios Bouras, Christos Rekkas, Evangelos Research Academic Computer Technology Institute Greece and Computer Engineering and Informatics Dept. Univ. of Patras Greece

ISBN: (纸本)9781424415205

Along with the widespread deployment of the third generation cellular networks, the fast-improving capabilities of the mobile devices, content and service providers are increasingly interested in supporting multicast communications over wireless networks and in Particular over Universal Mobile Telecommunications System (UMTS). To this direction, the third Generation Partnership Project (3GPP) is currently standardizing the Multimedia Broadcast/Multicast Service (MBMS) framework of UMTS. 117 this paper, we present on overview of the MBMS multicast mode of UMTS. We analytically present the multicast mode of the MBMS and analyze its performance ill terms of packet delivery cost under various network topologies, cell types and multicast users' distributions. Furthermore, for the evaluation of the scheme, we consider different transport channels for the transmission of the data the UTRAN interfaces.

关键词： Multicasting

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：