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A Distributed QoS Routing and CAC Framework: Performance Evaluation of Its SSRA and InterD Agents

A Distributed QoS Routing and CAC Framework: Performance Eva...

引用

International Conference on Complex, Intelligent and Software Intensive Systems, CISIS

作者： Leonard Barolli Makoto Ikeda Arian Durresi Fatos Xhafa Akio Koyama Department of Information and Communication Engineering Fukuoka Institute of Technology Fukuoka Japan Graduate School of Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Computer Science Louisiana State University Baton Rouge LA USA Department of Languages and Informatics Systems Polytechnic University of Catalonia Barcelona Spain Department of Informatics Yamagata University Yonezawa Yamagata Japan

In order to support multimedia communication, it is necessary to develop routing algorithms which use for routing more than one QoS parameters. This is because new services such as video on demand and remote meeting systems require better QoS. Also, for admission control of multimedia applications different QoS parameters should be considered. In our previous work, we proposed an intelligent routing and CAC strategy using cooperative agents. In this paper, we propose and evaluate the performance of SSRA algorithm and a GA-based InterD agent. Performace evaluation shows that proposed agents have a good behavior

关键词： Routing Quality of service Electronic mail Intelligent agent Competitive intelligence Fuzzy control Admission control Broadband communication Artificial intelligence Multimedia communication

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REPRESENTATION OF CLASSIC MAPS FOR MOBILE DEVICES. AN INTERActiVE MOBILE MAP APPLICATION

REPRESENTATION OF CLASSIC MAPS FOR MOBILE DEVICES. AN INTERA...

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18th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2007), vol.3

作者： John Garofalakis Pantelis Papapoulias Athanasios Plessas Computer Engineering and Informatics Department Research Academic Computer Technology Institute University of Patras Patras Greece Computer Engineering and Informatics Department University of Patras Patras Greece

Nowadays, the rapid growth of mobile devices and mobile applications bas changed the way we live. Mobile devices are widely used and they are providing people with needed information anytime and anywhere. People use mobile applications in many ways, for business purposes, as an organizer or even for entertainment. The development of mobile applications needs to be adapted with the special features and limitations of these devices. Looking in this direction, we present a mobile map application that we have developed for Microsoft Windows mobile users, which is using geographic data stored in the device's memory and allows the user to navigate through the map of different cities. A special feature of our application is the simulation of a classic map by giving the user the opportunity to take notes and marks on the map by clicking on the device's screen. These data are stored in the device and based on them we propose some ways to make navigation in mobile map applications faster and easier.

关键词： Application software Internet Mobile computing informatics Navigation Cities and towns Handheld computers Personal digital assistants Personal communication networks Land mobile radio

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Investigations of the Use of PosEye for Position Measurements

Investigations of the Use of PosEye for Position Measurement...

引用

Student Conference on Research and Development (SCOReD)

作者： D. V. Viswacheda P. Surireddy M. S. Arifianto M. Y. Hamid E. M. Husni L. Barukang School of Engineering and Information Technology Universiti Malaysia Sabah Kota Kinabalu Sabah Malaysia Department of Technology Mathematics and Computer Science University West Trollhattan Sweden School of Electrical Engineering and Informatics Institute of Technology at Bandung Jawa Barat Indonesia

The PosEye system is basically a position measurement system which takes images of the reference. The infra-red LEDs which emits IR lights is captured by the CCD and is used as the reference. In this system the absolute positioning and orientation were made with the help of a PosEye. The PosEye is normally fixed on a robot arm or the object which requires orientation of its own position in correspondence to its reference points in the working area. This paper discusses general ideas about reference markers, set-up procedures, and issues behind the sensor. This mainly includes the principles of PosEye sensor, basics of vision and cameras. The paper details the experiments in which results were obtained through the PosEye system with the help of electronics and PosEye camera. In the experimental setup, the connection of PosEye with the electronic application is presented, the usage of PosEye and the robot control system communication with the PosEye system using coordinate system. The working of the PosEye system is observed by taking images on the reference plate and finding the co-ordinates (x, y, z). The manipulation of the obtained images to the robot for a movement is also studied.

关键词： Position measurement Cameras Robot vision systems Robot control Charge coupled devices Robot sensing systems Robot kinematics Educational institutions Light emitting diodes Virtual reality

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A Novel Prototype for Documentation and Retrieval of 3D Objects

A Novel Prototype for Documentation and Retrieval of 3D Obje...

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International Conference on Image Analysis and Processing Workshops (ICIAPW)

作者： Efstathios Onasoglou Athanasios Mademlis Dimitrios Katsikas Petros Daras Michael Strintzis Informatics and Telematics Institute Centre for Research and Technology Hellas Greece Altanet SA Thessaloniki Greece Information Processing Labaratory Department of Electrical & Computer Engineering Aristotle University of Thessaloniki Greece

In this paper a working multimedia asset management system is presented which provides the means for storage, annotation, retrieval and re-use of any multimedia data such as 3D objects, images, sound, video and text. The working prototype is modular, customizable, secure, offers intranet and Internet connectivity and also software inter-operability as it can be compatible with various well- known, established database and ontology standards. The main innovative aspects of the proposed system are the efficient combination of the semantic aspects with multimedia data and the retrieval engine of the system which combines state-of-the-art 3D content-based algorithms and novel semantic driven, relevance feedback methods.

关键词： Prototypes Documentation Multimedia systems Image storage Information retrieval Multimedia databases Asset management Image retrieval Software prototyping Internet

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EVALUATION OF THE MULTICAST MODE OF MBMS

EVALUATION OF THE MULTICAST MODE OF MBMS

引用

18th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2007), vol.3

作者： Antonios Alexiou Christos Bouras Vasileios Kokkinos Evangelos Rekkas Computer Engineering and Informatics Department University of Patras Greece Research Academic Computer Technology Institute Greece

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： 3G mobile communication Costs Performance analysis Network topology Radio access networks computer networks Routing Ground penetrating radar Radio control Broadcasting

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The Evaluation of the Efficient Prepaid Scheme TICA for All-IP Networks and Internet Services

The Evaluation of the Efficient Prepaid Scheme TICA for All-...

引用

IFIP/IEEE International Symposium on Integrated Network Management

作者： Pascal Kurtansky Peter Reichl Burkhard Stiller Computer Engineering and Networks Laboratory TIK Swiss Federal Institute of Technology Zurich Switzerland Telecommunications Research Center Vienna Vienna Austria Department of Informatics IFI University of Zurich Zurich Switzerland

ISBN: (纸本)1424407982

Future all-IP networks will support a variety of high-value IP-based services including the upcoming integration of today's non-IP services offered by mobile telecommunication providers. Besides postpaid charging, prepaid charging will play an important role in all-IP environments due to the financial control of providers and customers, thus determining effective economic management means for Internet services. Since existing prepaid charging solutions do not meet imposed all-IP requirements, a novel approach-TICA (time interval calculation algorithm)-with three variants has been presented recently in [14,16]. To prove its optimized performance for many service mixes foreseen, this paper performs a thorough evaluation based on different scenarios. Additionally, comparing TICA's overall performance with existing online charging solutions shows TICA's promising results in terms of way smaller quantity of credit checks required and smaller financial risks for providers to be achieved. Finally, the three TICA variants reveal a clear sensitivity to defined input parameters. These findings indicate that a numbers of suitable settings can be used by service providers.

关键词： Web and internet services Environmental economics IP networks Performance evaluation Circuits Costs Pricing computer networks Laboratories informatics

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On A Web-Graph-Based Micronetwork Architecture for SoCs

On A Web-Graph-Based Micronetwork Architecture for SoCs

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50th IEEE International Midwest Symposium on Circuits and Systems (MWSCAS'07), vol.3

作者： Ling Wang Shouye Piao Yingtao Jiang Juyeon Jo Lihong Zhang Department of Computer Science Harbin Institute of Technology Harbin Heilongjiang China Department of Electrical and Computer Engineering University of Nevada Las Vegas NV USA School of Informatics University of Nevada Las Vegas NV USA Engineering and Applied Science Memorial University of Newfoundland Saint John's NEW Canada

From System-on-chip to Network-on-chip, the main dissimilarity is replacing the bus with the network. How connect, how formative network function is related to topology structure. In this paper we propose a topology structure for NoC, and compare it with mesh, torus, the fat tree, octagon, spidergon topology networks by five kinds of mainly properties: node degree, network diameter, connectivity, the average most short-circuit path and the average shortest wire length. Experiment results show that this topology has better performance on cost/performance layout.

关键词： Network-on-a-chip Network topology Integrated circuit interconnections System-on-a-chip Delay effects Wiring Power system interconnection Protocols computer architecture computer science

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A Fuzzy-based Call Admission Control System forWireless Cellular Networks

A Fuzzy-based Call Admission Control System forWireless Cell...

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International Conference on Distributed Computing Systems Workshop

作者： Leonard Barolli Fatos Xhafa Arjan Durresi Akio Koyama Department of Information and Communication Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Languages and Informatics Systems Polytechnic University of Catalonia Barcelona Spain Department of Computer Science Louisiana State University Baton Rouge LA USA Department of Informatics Yamagata University Yonezawa Yamagata Japan

The mobile cellular systems are expected to support multiple services with guaranteed quality of service (QoS). However, the ability of wireless systems to accommodate expected growth of traffic load and broadband services is limited by available radio frequency spectrum. Call admission control (CAC) is one of the resource management functions, which regulates network access to ensure QoS provisioning. However, the decision for CAC is very challenging issue due to user mobility, limited radio spectrum, and multimedia traffic characteristics. To deal with these problems, in this paper, we propose a fuzzy CAC system. We compare the performance of the proposed system with shadow cluster concept (SCC). We evaluate by simulation the performance of the proposed system. The proposed system has a good behavior on deciding the number of accepted connections while keeping the QoS for serving connections.

关键词： Call admission control Land mobile radio cellular systems Quality of service Wireless networks Traffic control Electronic mail Bandwidth Cellular networks Telecommunication traffic Multimedia systems

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Adaptive Frame Interpolation for Wyner-Ziv Video Coding

Adaptive Frame Interpolation for Wyner-Ziv Video Coding

引用

IEEE Workshop on Multimedia Signal Processing

作者： Savvas Argyropoulos Nikolaos Thomos Nikolaos V. Boulgouris Michael G. Strintzis Centre for Research and Technology Informatics and Telematics Institute Thessaloniki Greece Electrical and Computer Engineering Department University of Thessaloniki Thessaloniki Greece Signal Processing Institute-ITS Ecole Polytechnique Federale de Lausanne Lausanne Switzerland Department of Electronic Engineering Division of Engineering King''s College UK

ISBN: (纸本)9781424412730

This paper addresses the problem of frame interpolation for Wyner-Ziv video coding. A novel frame interpolation method based on block-adaptive matching algorithm for motion estimation is presented. This scheme enables block size adaptation to local activity within frames using block merging and splitting techniques. The efficiency of the proposed method is evaluated in transform domain Wyner-Ziv video coding. The experimental results demonstrate the superiority of the proposed method over existing frame interpolation techniques.

关键词： Interpolation Video coding Motion estimation Decoding Motion analysis Codecs Automatic voltage control Source coding Smoothing methods Signal processing

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Linking Protein Mass with Function via Organismal Massome Networks

Linking Protein Mass with Function via Organismal Massome Ne...

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IEEE Symposium on Bioinformatics and Bioengineering (BIBE)

作者： Gil Alterovitz Eugenia Lyashenko Michael Xiang Marco F. Ramoni Health Sciences and Technology Harvard Medical School Boston MA USA Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge MA USA Department of Biomedical Informatics Columbia University New York NY USA Division of Health Sciences and Technology Harvard Medical School and Massachusetts Institute of Technology Boston MA USA

With the human genome sequenced, attention has been shifting to proteins and their function. Several technologies including mass spectrometry and gel electrophoresis have traditionally been used to study proteins. These technologies rely on proteins' masses to characterize and/or identify them. Once identified, the discovered proteins' are often analyzed for their functional relevance. In this paper, we present an alternative approach to studying protein function directly, based on protein mass. By analyzing proteins with similar mass ranges (bins), we discovered that certain biological functions are associated with specific mass bins more frequently than would be expected by chance. Biological functional classes found in this manner could be seen across the three examined organisms: human, worm and fly. We found no sequence-based homology across significant mass-function proteins in the three different organisms. This investigation leads to useful property that the mass-based biological functional classes are preserved across the organisms. Thus, this paper describes a potential constraint for evolution of similar function based on mass constraints. Finally, this work yields a roadmap for experimental design for functional exploration of proteomes in mass-based technologies such as gel electrophoresis and mass spectrometry.

关键词： Joining processes Proteins Organisms Humans Mass spectroscopy Electrokinetics Genomics Bioinformatics Evolution (biology) Design for experiments

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