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检索条件"任意字段=Conference on All-Optical Communication Systems: Architecture, Control and Network Issues"

共 2533 条记录，以下是2351-2360 订阅

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DESIGN OF A GRAPHICAL USER INTERFACE FOR AN INTELLIGENT MULTIMEDIA INFORMATION SYSTEM FOR RADIOLOGY RESEARCH

DESIGN OF A GRAPHICAL USER INTERFACE FOR AN INTELLIGENT MULT...

引用

conference on PACS Design and Evaluation - Engineering and Clinical issues

作者： TAIRA, RK WONG, C JOHNSON, D BHUSHAN, V RIVERA, M HUANG, L ABERLE, D CARDENAS, AF CHU, WW UNIV CALIF LOS ANGELES SCH MEDDEPT RADIOL SCILOS ANGELESCA 90024

ISBN: (纸本)0819417831

With the increase in the volume and distribution of images and text available in PACS and medical electronic health-care environments it becomes increasingly important to maintain indexes that summarize the content of these multi-media documents. Such indices are necessary to quickly locate relevant patient cases for research, patient management, and teaching. The goal of this project is to develop an intelligent document retrieval system that allows researchers to request for patient cases based on document content. Thus we wish to retrieve patient cases from electronic information archives that could include a combined specification of patient demographics, low level radiologic findings (size, shape, number), intermediate-level radiologic findings (e.g., atelectasis, infiltrates, etc.) and/or high-level pathology constraints (e.g., well-differentiated small cell carcinoma). The cases could be distributed among multiple heterogeneous databases such as PACS, RIS, and HIS. Content- based retrieval systems go beyond the capabilities of simple key-word or string-based retrieval matching systems. These systems require a knowledge base to comprehend the generality/specificity of a concept (thus knowing the subclasses or related concepts to a given concept) and knowledge of the various string representations for each concept (i.e., synonyms, lexical variants, etc.). We have previously reported on a data integration mediation layer that allows transparent access to multiple heterogeneous distributed medical databases (HIS, RIS, and PACS). The data access layer of our architecture currently has limited query processing capabilities. Given a patient hospital identification number, the access mediation layer collects all documents in RIS and HIS and returns this information to a specified workstation location. In this paper we report on our efforts to extend the query processing capabilities of the system by creation of custom query interfaces, an intelligent query processing

关键词： Radiology Pathology Tumors Lung Data modeling Intelligence systems Lung cancer Data mining Databases Picture Archiving and communication System

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Multimedia support in distributed systems

Multimedia support in distributed systems

引用

IEEE International conference on communications (ICC)

作者： M. Carew M. Merabti K. Whiteley Liverpool John Moores University Liverpool UK

Advances in data communication and processing technologies have increasingly led to their application to novel areas. One important area is the domain of real-time distributed systems where new applications include desktop video conferencing for the support of cooperative working. These new types of applications, in addition to being distributed, also have the inherent real-time characteristics of stringent deadlines for correct operation and high bandwidth requirements. This paper investigates the issues raised by multimedia systems in the context of open distributed processing (ODP). The main issues reside in the domains of the operating system, communication system and their transport layer integration. Current operating systems are limited by their approaches to process scheduling, inter process communication (IPC) and resource allocation. Data networks are limited by the network service abstractions available and the lack of appropriate functionality for the allocation of resources, scheduling of packets and control of congestion. all of these issues are crucial to offering quality of service (QoS) guarantees on an "end to end" basis. The paper discusses these issues and proposes an architecture which would offer the QoS guarantees required by multimedia applications.

关键词： Multimedia systems Quality of service Operating systems Resource management Data communication communications technology Real time systems Videoconference Bandwidth Context

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Call admission control issues in a wireless ATM network

Call admission control issues in a wireless ATM network

引用

International conference on Computer communications and networks (ICCCN)

作者： L. Cheng H.D. Hughes Department of Computer Science Michigan State University USA

This paper presents call admission control issues for an ATM-based wireless network with mobile hosts. Such wireless ATM networks are motivated by both an increasing demand for mobile capability for future broadband networks and broadband multimedia services for mobile systems. An ATM compatible wireless network capable of supporting a mix of broadband ISDN services is discussed. We present a conceptual view of a wireless ATM architecture with distributed call admission functions. Related issues of call admission control caused by these characteristics are discussed, and new trends toward call admission control in future wireless ATM network are identified.

关键词： Call admission control Intelligent networks Asynchronous transfer mode Mobile communication Wireless networks Broadband communication Bandwidth Telecommunications Computer science B-ISDN

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architecture and technology for global networking

Architecture and technology for global networking

引用

IEEE Princeton Section Sarnoff Symposium

作者： V.W.S. Chan

It is argued that the drive towards a ubiquitous globally connected information network has begun. This exciting development for the 1990's has been stimulated by advancements of communications and networking technologies in many fkonts, including fiber, wireless, satellite communication and computer technologies. Ultimately all these disparate systems must be interconnected into a seamless web of interoperable communication and information networks, data bases, severs etc., that will eventually link businesses, schools, industxies and homes together. The types of services to be provided will be very broad, from entertainment to specialized computer communications for research, development and manufacturing. As the world proceeds to develop this global network, industries and governments will have to make some very hard choices that will affect the investment on research and development and ultimately the architecture and the physical hardware that would be put in place in the next decade or so. Since this next network promises to be large, extensive, costly and likely to be around for decades to come, it is important at this very critical juncture to ensure that all the critical issues are addressed and the appropriate architecture and hardware are inserted in the build-up.

关键词： communications technology Computer aided manufacturing Research and development Hardware optical fiber communication Wireless communication Satellite communication Computer networks Pervasive computing

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Data communications management for the Boeing 777 airplane

Data communications management for the Boeing 777 airplane

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conference on Digital Avionics systems (DASC)

作者： R.B. Kerr Air Transport Systems Division Honeywell Inc. Phoenix AZ USA

The integrated avionics architecture of the Boeing 777 airplane, where several functions normally housed in separate computer units are implemented within a single avionics cabinet, presented some unique opportunities and challenges for the implementation of the data link functionality. The Data communications Management Function (DCMF) is responsible for the communications routing protocols, both for the ACARS air-ground communications and the onboard, fiber optic avionics network. The Flight Deck communications Function (FDCF) implements the crew interface to the data Link function using a Cursor control Device (CCD) and Multi-Function Display (MFD) in addition to the conventional control and Display Unit (CDU) and printer. FDCF is also responsible for the implementation of the customer unique Aeronautical Operational control (AOC) applications which may be tailor-made and loaded into the system by the airline customer using a ground-based tool. This paper discusses the architectural and operational characteristics of the data link function on the Boeing 777 airplane, and consider how future data link applications and protocols may be accommodated.

关键词： Data communication Airplanes Aerospace electronics communication system control Displays Computer architecture Computer network management Routing protocols optical fibers Charge coupled devices

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An agent oriented paradigm for the design of complex systems: energy distribution automation, an application domain

An agent oriented paradigm for the design of complex systems...

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IEEE International Caracas conference on Devices, Circuits and systems

作者： J. Delgado N. Ishii K. Naito Nagoya Institute of Technology Nagoya Japan

Distributed computing, where the underlying network is complex, heterogeneous and unreliable, is hard to realize with traditional approaches. Energy Distribution Automation (DA), where the power line is used for communication, and the processing is highly distributed is our application domain for assessments of new technologies for these kind of systems. In this paper we propose a new approach where Agents interact, trying to solve problems in a distributed and cooperative manner. An Agent Oriented Paradigm is introduced for the design of such complex systems and a basic agent architecture is outlined. Some problems of this approach are highlighted and the conclusions are finally focused on further research and implementation issues.

关键词： Design automation Automatic control communication system control Distributed computing SCADA systems control systems Power system management Medical services Artificial intelligence Power distribution

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Data partitioning for load-balance and communication bandwidth preservation

Data partitioning for load-balance and communication bandwid...

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International conference on Massively Parallel Processing Using optical Interconnections

作者： S.L. Johnsson Department of Computer Science University of Houston Houston TX USA

Preservation of locality of reference is the most critical issue for performance in high performance architectures, especially scalable architectures with electronic interconnection networks. We briefly discuss some of the issues in this paper and give results from the use of spectral bisection on irregular grid computations on the Connection Machine systems.

关键词： Bandwidth Routing Multiprocessor interconnection networks Grid computing Computer science Aggregates network topology Degradation Computer architecture Registers

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A fiber-optic interconnection concept for scaleable massively parallel computing

A fiber-optic interconnection concept for scaleable massivel...

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International conference on Massively Parallel Processing Using optical Interconnections

作者： M. Jonsson K. Nilsson B. Svensson Centre for Computer Architecture Halmstad University Halmstad Sweden Department of Computer Engineering Chalmers University of Technology Goteborg Sweden

One of the most important features of interconnection networks for massively parallel computer systems is scaleability. The fiber-optic network described in this paper uses both wavelength division multiplexing and a configurable ratio between optics and electronics to gain an architecture with good scaleability. The network connects distributed modules together to a huge parallel system where each node itself typically consists of parallel processing elements. The paper describes two different implementations of the star topology, one uses an electronic star and fiber optic connections, the other is purely optical with a passive optical star in the center. The medium access control of the communication concept is presented and some scaleability properties are discussed involving also a multiple-star topology.

关键词： optical fiber networks Circuit topology Multiprocessor interconnection networks Computer networks Concurrent computing Wavelength division multiplexing optical interconnections Computer architecture Parallel processing network topology

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Mobile network architectures towards UMTS

Mobile network architectures towards UMTS

引用

International conference on Universal Personal communications

作者： E. Berruto G. Colombo A. Napolitano CSELT-Centro Studi e Laboratori Telecomunicazioni SpA Torino Italy

The development of the third generation mobile systems obeys, on one hand, the requirement of complete integration within the IBC framework, and is able to supply several communication features and a wide spectrum of services and, on the other hand, a transition perspective, where it can be seen as an evolution of second generation networks, namely GSM, DCS1800 and DECT. This paper addresses the Universal Mobile Telecommunications System (UMTS) technical solutions that can comply, with both integration and migration requirements in the above sense. It reports some elements of the discussion going on in European research programmes on the subject. Specifically, the main issues of the UMTS network architecture, the service evolution and the impact of radio access techniques on the fixed network infrastructure are considered. One of the most critical points considered is the definition and the implementation of mobility driven features in the B-ISDN context.

关键词： 3G mobile communication Telecommunication control Mobile communication GSM Telecommunication services Mobile radio mobility management Telecommunication switching Telecommunication standards communication industry Digital systems

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Fuzzy logic approach in a distributed plant automation system with intelligent front end controllers

Fuzzy logic approach in a distributed plant automation syste...

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IEEE/IAS International conference on Industrial Automation and control, IA & C

作者： H. Chandra Electronics Division Bharat Heavy Electricals Limited Bangalore India

Fuzzy set theory is getting increasing importance in process control applications. Electronics Division of BHEL, Bangalore have developed an integrated plant automation system in distributed architecture known as "DIPAS". The system incorporates man-machine interface, a fast local area network, 32-bit VME-based main processor and multiprocessor based all intelligent front end controllers. The control strategy is configured by user friendly function blocks. The paper explains the approach for enhancement of the system by incorporation of fuzzy-control. The paper brings out the fact that distributed multiprocessor architecture of the system is well suited for fuzzy logic control which co-exist along with conventional controls. A brief system architecture along with fuzzy logic based control approach is described in the paper.< >

关键词： Fuzzy logic Automation Intelligent systems Automatic control control systems communication system control Industrial plants Process control Nonlinear dynamical systems Three-term control

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