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On-Line Optimization of Switched-Mode Systems: Algorithms and Convergence Properties

On-Line Optimization of Switched-Mode Systems: Algorithms an...

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Proceedings of the 46th IEEE Conference on Decision and Control, Pages 1-459

作者： Y. Wardi X.C. Ding M. Egerstedt S. Azuma School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta GA USA Department of Systems Science Graduate School of Informatics Kyoto University Kyoto Japan

ISBN: (纸本)9781424414970;1424414970

This paper concerns the problem of on-line (real-time) computation of solutions to the optimal switching time problem in hybrid systems. The systems under consideration are autonomous, and the performance measure to be optimized has the form of a cost functional defined on the state trajectory. The state variable cannot, however, be measured directly and it has to be estimated by a suitable observer. In this paper, we propose an on-line optimization algorithm based on the state observer, and derive bounds on its convergence rate.

关键词： State variable switching pattern Observers IN-LINE Optimization algorithms hybrid systems Converge real-time computation state trajectory

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A Multi-Phase Protocol for Negotiation with Interdependent Issues 07

A Multi-Phase Protocol for Negotiation with Interdependent I...

引用

IEEE/WIC/ACM International Conference on Intelligent Agent technology (IAT)

作者： Hiromitsu Hattori Mark Klein Takayuki Ito Department of Social Informatics Kyoto University Sakyo Kyoto Japan Sloan School of Management Massachusetts Institute of Technology Cambridge MA USA Department of Computer Science and Engineering Graduate School of Engineering Nagoya Institute of Technology Nagoya Aichi Japan

ISBN: (纸本)9780769530277

Multi-issue negotiations are a central component of many important coordination challenges. Almost all previous work in this area has assumed that negotiation issues are independent, making it relatively easy to find high-quality agreements. In many real-world problem domains, however, issues are interdependent, making hard to find good agreement due to the nonlinearity of the agent's utility functions. The key challenge, in this context, is finding high-quality agreements without making unrealistic demands concerning how much agents reveal about their utilities. In this paper, we propose a protocol wherein the negotiating agents, working with the mediator, progress through a multi-phase narrowing of the space of possible agreements. We show that our method outperforms existing methods in large nonlinear utility spaces.

关键词： Protocols Contracts Intelligent agent informatics Conference management technology management engineering management USA Councils Indium tin oxide computer science

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Content Orientation in Integrated Product Modeling

Content Orientation in Integrated Product Modeling

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IEEE International Conference on Intelligent engineering Systems (INES)

作者： Laszlo Horvath Imre J. Rudas Gerhard P. Hancke John von Neumann Faculty of Informatics Budapest Technology Institute of Intelligent Engineering Systems Budapest Hungary Department of Electrical Electronic and Computer Engineering University of Pretoria Pretoria South Africa

Changes in engineering for development of product in the direction of increased complexity, more variants, and customer demand orientation stimulates implementation of advanced information technology in the form of virtual space. For this reason, concept of integrated product model has been implemented in comprehensive descriptions for lifecycle management of product information. Communication between engineer and modeling procedure is a critical factor. The authors identified data orientation of the recent integrated product modeling as a barrier for more efficient communication on user interfaces of product modeling systems. As a possible contribution to development of solution for this problem in industrial professional modeling systems, they propose content oriented layers between human and data oriented models in this paper. Following this, integration issues in content oriented product model are discussed. Next, relevant functions and modeling techniques for the handling of modeled object information are introduced and evaluated. Finally, a method is shown for the propagation of changes initiated for modeled objects in their affect zones.

关键词： Humans ISO standards Information technology User interfaces computer aided manufacturing CADCAM Automation Standards development Intelligent systems Systems engineering and theory

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A cluster head selection method for wireless sensor networks based on fuzzy logic

A cluster head selection method for wireless sensor networks...

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IEEE Region 10 International Conference TENCON

作者： Junpei Anno Leonard Barolli Fatos Xhafa Arjan Durresi Department of Information and Communication Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Languages and Informatics Systems Polytechnic University of Catalonia Spain Department of Computer Science Louisiana State University USA

Sensor networks supported by recent technological advances in low power wireless communications along with silicon integration of various functionalities are emerging as a critically important computer class that enable novel and low cost applications. There are many fundamental problems that sensor networks research will have to address in order to ensure a reasonable degree of cost and system quality. Cluster formation and cluster head selection are important problems in sensor network applications and can drastically affect the network's communication energy dissipation. However, selecting of the cluster head is not easy in different environments which may have different characteristics. In this paper, in order to deal with this problem we propose a power reduction algorithm for sensor networks based on fuzzy logic. We evaluate the proposed method by simulations and show that proposed system makes a good selection of the cluster head.

关键词： Wireless sensor networks Fuzzy logic Application software Sensor phenomena and characterization Wireless communication Silicon computer networks Cost function Sensor systems Energy dissipation

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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...

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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...

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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-...

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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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