Research Reports Esprit – serie
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48 produkter
48 produkter
Häftad, Engelska, 1986
1 477 kr
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Edited for Working Group 2 (WG 2): Cisigraph, Cranfield Institute of Technology, Danmarks Tekniske Hojskole, Kernforschungszentrum Karlsruhe GmbH, NEH Consulting Engineers ApS, Universitat Karlsruhe
Häftad, Engelska, 1987
1 110 kr
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In the beginning of the 1980's it became evident that the European IT industry needed a substantial collaborative effort in the area of pre-competitive research and development. At that time several studies indicated that in the 90's and later a strategic lack in the economic power of European industry as a whole might result from the lack .of a competitive position in the key area of information technology. Therefore a strategic research program in this area was initiated by the Commission of the European Communities. This program was carefully planned and several hundred experts were involved in the process of definition and implementation. The program was named ESPRIT - European Strategic Programme for Research and Development in Information Technologies. At a very early phase of the program it was obvious that a substantial collaborative multinational effort in the direction of human factors in information technology should be undertaken. It became clear that only with the incorporation of human-factors-oriented knowledge into the product design technologies of the 90's could later success in the market be assured. Moreover, it was felt that Europe especially is well equipped to deal thoroughly with user issues in relation to information technology.
Del 1 - Research Reports Esprit
Specification of a CAD * I Neutral File for CAD Geometry
Wireframes, Surfaces, Solids Version 3.3
Häftad, Engelska, 1988
1 110 kr
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ESPRIT Project 322, "CAD Interfaces", has been established to define the most important interfaces in CAD/CAM systems for data exchange, data base, finite element analysis, experimental analysis, and advanced modeling. The definitions of these interfaces are being elaborated in harmony with international standardization efforts in this field. One principal goal of the project is to develop techniques for the exchange of CAD information between CAD systems, and from the CAD domain to CAA (Computer Aided Analysis) and CAM (Computer Aided Manufacturing). This volume presents a proposal for a neutral file format for CAD data: curves, surfaces, and solids. The specification is based on a reference schema for CAD data bases and is defined informally with respect to its semantics and formally with respect to its syntax. This volume is a revised edition of "Specification of a CAD*I Neutral File for Solids" Version 3.2. The revision reflects the enhancements which result from the implementation of communication processors in eight different CAD systems and from the practical exchange of solid models between these systems. Due to the close interaction between the CAD*I project and the coming-up international standard STEP this specification also serves as an introduction to the geometry model that will be included in the future international standard.
Del 1 - Research Reports Esprit
External Interface for Processing 3-D Holographic and X-Ray Images
Häftad, Engelska, 1989
1 078 kr
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Internationally recognized experts in the field of holographic interferometric testing, X-ray testing, and structural analysis by finite element techniques have come together in ESPRIT project 898 to develop a system that integrates these techniques. This system acts as an external interface between the complementary nondestructive testing methods and computer based structural analysis. In the book the testing and analysis techniques are presented and compared with special emphasis on problems regarding their combination and integration. The architecture and the components of the interface system are described. Experiments proving the feasibility and applicability of the concepts are presented. The chapters of the book dealing with the different techniques are written by the individual partners of the project. A common test object is investigated by all techniques. The book helps the customer to select the testing and analysis method most suitable for his problem. It also presents the background for building up integrated testing equipment for analysis and control.
Del 1 - Research Reports Esprit
Accurate Numerical Algorithms
A Collection of Research Papers
Häftad, Engelska, 1989
542 kr
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The ESPRIT Project 1072, DIAMOND (Development and Integration of Accurate Mathematical Operations in Numerical Data-Processing) was carried out from January 1986 through April 1989 by the five partners Siemens Miinchen (prime contractor), CWI Amsterdam, University of Karlsruhe (Institut fiir Ange wandte Mathematik), NAG Oxford and University of Bath (subcontractor to NAG). The technical work was divided into three main work packages with one additional work package for miscellaneous topics. The major goals of this project, according to its title, were to develop a set of accurate numerical algorithms (work package 3) and to provide tools to support their implementation by means of an embedding of accurate arithmetic into programming languages (work package 1) and by transform ation techniques which either improve the accuracy of expression evaluation or detect and eliminate presumable deficiencies in accuracy in existing programs (work package 2). A great variety of working papers describing and discussing the results of these work packages have been written during the collaboration of the project. This book (Accurate Numericlll A 19oritltms) mainly summarizes the results of work package 3, carried through by the two partners Karlsruhe University and NAG Oxford under the leadership of the editors and Dr. G. S. Hodgson. Another book (Improving Floating-Point Programming, J. Tliley, to appear 1989), edited by P.J.L. Wallis, which is one of the DIAMOND project's final deliverables, concentrates more on the fundamental tools.
Häftad, Engelska, 1989
1 078 kr
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During the past 25 years computers have been introduced in industry to perform technical tasks such as drafting, design, process planning, data acquisition, process control, and quality assurance. Computerized solutions nevertheless have normally been single, isolated devices within a manufacturing plant. Computer technology is still evolving rapidly. The life cycle of todays' products and production methods is shortening, with continuously increasing requirements of customers, and a trend to market interrelations between companies at a national and international level. This urges a need for efficient storage retrieval and exchange of information. Integration of information flow is urgent inside companies to closely connect together departments, which used to work, more or less, on their own. On the other hand direct communication with outside customers, suppliers, and partner institutions will often determine the position of an enterprise among the competitors. In this sense, computer integrated manufacturing (CIM) is the key of today for the competitiveness of tomorrow. But the realisation of a future oriented CIM concept is not possible without powerful, widely accepted, and standardised interfaces. They are the vital issue on the way to CIM. They will contribute to harmonise data structures and information flows and play a major role for open CIM systems. Standardised interfaces should allow for: Access to data produced and archived on computing equipment which is no longer in active use; Communication between hardware and software from different vendors; Paperless exchange of information.
Del 3 - Research Reports Esprit
CAD Data Transfer for Solid Models
Häftad, Engelska, 1989
1 078 kr
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Principal authors: U. Kroszynski, B. Palstr9Sm 1.1 The evolution of concepts and specifications for CAD data exchange The CAD/CAM community has witnessed, during the last decade, the appearance of several specifications as well as proposals for standards which either attempt to cover wider areas or to be more reliable and stable than the others. With the rapid evolution of both hardware and software, the capabilities offered by CAD systems and CAD based application systems are far more advanced than they were only ten years ago, even when they are now based on micro-computers or personal comput ers. The situation with standards, however, is not and cannot be so. In order to be reliable and accepted by a wide community of both vendors and users, a standard has to be sta ble. This implies a life span of at least a decade. This also implies that the standard has to be general and flexible enough to accommodate present as well as expected future developments. 1.1.1 IGES The initial development of concepts for CAD data exchange is strongly influenced by the US Integrated Computer Aided Manufacturing (ICAM) programme, that dealt with the development of methods for data exchange. In September 1979, a subgroup was estab lished with participation of the National Bureau of Standards, the General Electric Com pany, and the Boeing Company. The result of this effort was the Initial Graphics Exchange Specification (IGES) that was published as a NBS report [61] in 1980.
Häftad, Engelska, 1990
1 078 kr
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The content of this book is an information model for technical drawings, the so-called "Drafting Model". The Drafting Model is a part of a complex information model describing product definition data, their applications and their representations. The definition of the information model is a central component of the development of STEP, a future international standard for the exchange of product defmition data. Here the Drafting Model particularly encloses descriptions for the representations of organizational drawing data, tolerances, dimensions and surface attributes such as surface fmish symbols (a survey of the whole content is shown in the figure above). Additional to that requirements for the Presentation Model concerning the representation of geometry as well as the integration process for both the Drafting and the Presentation Models are formulated. The extent of the Drafting Model is restricted to the application area "Mechanical Engineering". Within the Drafting Model the annotation representations are described on the one hand informally and on the other hand formally using a high level language for information modeling, EXPRESS. Principally the representations of the annotation are described according to the international drawing standards. Thus the semantics pertinent to the specific graphical appearance are maintained. The data structures provide formal descriptions of annotations at a high generation level, which means that a "way" is defmed how to generate these annotations.
Del 1 - Research Reports Esprit
Automatic Tools for Designing Office Information Systems
The TODOS Approach
Häftad, Engelska, 1990
1 110 kr
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The market for information technology products is rapidly changing from a manufactur er-driven market where new products were determined by the evolution of technology, to a user-driven market where users buy only products corresponding exactly to their needs and where competition is very strong. Confronted with this market situation, hardware and software producers are being obliged to adopt new strategies, and to make a large number of products available on the market in response to a variety of different needs. As a result of the multiplicity of choice available, the design of an office system which corresponds precisely to user needs is becoming an increasingly complex task. With exactly this in mind, the Commission, as early as 1985, invited submissions of projects aiming at the development of such adequate tools in its Call for Proposals for the ESPRIT Programme, in order to assist companies in the design of their office systems. This topic was recognised as being of strategic importance, considering the low level of penetration of Information Technology in European enterprises compared to the United States and Japan. Following this strategy, the project TODOS was selected and launched. This project has successfully developed tools and methods for the definition of the functional specifi cation of the office system, as well as the system architecture and user interface -results which can be of great interest for the IT community at large.
Del 5 - Research Reports Esprit
CAD*I Database
An Approach to an Engineering Database Version 4.0
Häftad, Engelska, 1990
559 kr
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In this ESPRIT research report of a group of engineers in the CAD*I project the possibility of using a database management system (DBMS) for computer aided design (CAD) purposes is analyzed and conditions are derived that enable CAD systems to manage CAD models containing increasing amounts of data and more and more intelligent relations. Today CAD models constitute isolated islands of data stored in independent files, and to create and maintain relations between pieces of information stored in several models (files) in a multi-user environment is a complex task. At a conceptual level, a relational DBMS associated with the language SQL (ISO standard) is the ideal tool to create and maintain such relations. At the implementation level, it is of the highest importance to define the optimum granularity of information to be stored in the database in order to get a good response time from such a system.
Häftad, Engelska, 1990
1 110 kr
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This book is intended to give an overview of the major results achieved in the field of natural speech understanding inside ESPRIT Project P. 26, "Advanced Algorithms and Architectures for Speech and Image Processing". The project began as a Pilot Project in the early stage of Phase 1 of the ESPRIT Program launched by the Commission of the European Communities. After one year, in the light of the preliminary results that were obtained, it was confirmed for its 5-year duration. Even though the activities were carried out for both speech and image understand ing we preferred to focus the treatment of the book on the first area which crystallized mainly around the CSELT team, with the valuable cooperation of AEG, Thomson-CSF, and Politecnico di Torino. Due to the work of the five years of the project, the Consortium was able to develop an actual and complete understanding system that goes from a continuously spoken natural language sentence to its meaning and the consequent access to a database. When we started in 1983 we had some expertise in small-vocabulary syntax-driven connected-word speech recognition using Hidden Markov Models, in written natural lan guage understanding, and in hardware design mainly based upon bit-slice microprocessors.
Häftad, Engelska, 1990
1 078 kr
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This book is concerned with problems and solutions associated with the exchange of data between different computer aided design, engineering and manufacturing (CAx) systems. After an analysis of the current problems a new strategy consisting of a test methodology, check software and tools for the improvement of the data exchange process are discussed. The particular problems associated with the transfer of curve and surface data are expanded upon and new methods to overcome them presented. With all these tools a system-specific adaption of neutral files is made possible. Thus the integration of several incompatible CAx systems within devel- opment and production processes can be effectively improved. In order to exclude incorrect data a new methodology for neutral file processor tests has been worked out. Finally, the benefits resulting from this new strategy are shown by the example of data transfer not only between CAx systems but also between consecutive production processes.
Häftad, Engelska, 1991
559 kr
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The aim of this study is to provide evidence of the relevance of functional programming for software engineering, both from a research and from a practical point of view. The software development process is studied and a brief introduction to functional programming and languages is provided. Functional programming tends to promote locality which makes it possible to reason about a component of a program, independent of the rest of the program. The significance of the functional approach for formal program manipulation is illustrated by two important techniques, abstract interpretation and program transformation. Abstract interpretation is applied to the compilation of memory management and program transformation is illustrated with many applications such as program correctness proofs, program analysis and compilation. A correct compiler is described entirely in terms of program transformations. Regarding program construction, it is shown that input/output and state-oriented problems can be described in a purely functional framework.
Del 7 - Research Reports Esprit
Advanced Modelling for CAD/CAM Systems
Häftad, Engelska, 1991
542 kr
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Reiner Anderl The Advanced Modelling part of the CAD*I project aimed at the development of a new generation of modelling techniques as a basic functionality of future CAD/CAM systems. The methodology and concepts for advanced modelling techniques, their availability in the communication interface of a CAD/CAM system and their influence on internal interfaces in the software architecture of a CAD/CAM system are fundamental results of advanced modelling work. These results form the basis for the development of a new generation of CAD/CAM systems which are called product modelling systems. CAD/CAM systems today mainly support the geometric description of a technical part or its description as a technical drawing. Advanced geometric modelling capabilities deal with parametric design functions embedded into CAD/CAM systems. However, development strategies for future CAD/CAM systems are directed toward the following: 1. The development of product modelling systems and 2. the development of integrated systems based on CAD, CAP (Computer Aided Planning), CAM and other CIM (Computer Integrated Manu facturing) functionalities.
Del 1 - Research Reports Esprit
LPCVD Silicon Nitride and Oxynitride Films
Material and Applications in Integrated Circuit Technology
Häftad, Engelska, 1991
542 kr
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The present book collects a broad overview of chemical and physical char acteristics of silicon oxynitrides. Special emphasis is put on the way in which these properties influence the electrical characteristics and behaviour of this important material. The results presented here were obtained in an ex tended European research cooperation in the framework of ESPRIT Project 369 'Physical-chemical characterization of silicon oxynitrides in relation to their electrical properties', which ran from 1984 to 1988. In this project two industrial laboratories (Philips Research Laborato ries in Eindhoven, the Netherlands, and Matra Harris Semiconductors from Nantes, France) cooperated with various academic and government research laboratories (Harwell Laboratory in Great Britain, the Interuniversity Micro electronics Center (IMEC) in Leuven, Belgium, and the Faculty of Physics at the University of Utrecht in the Netherlands). The latter partner acted as prime contractor for the project. General interest in silicon oxynitrides for applications in integrated circuit technology stems from the fact that proper choice of deposition conditions enables one to produce materials with properties which can be either oxide like or nitride-like. Of, course, in I.C. technology one would like to combine the good properties ofthe two materials, i.e. superior electrical properties of silicon oxide and good diffusion barrier behaviour of silicon nitride, to men tion only a few, without paying for such an operation by obtaining all the less desirable properties in such a mixed material.
Häftad, Engelska, 1991
1 110 kr
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This book presents the main results of Project 1158 "ATES" in the Subprogramme "Software Technology" of ESPRIT, the European Strategic Programme for Research and Development in Information Technology supported by the European Communities. The ATES system integrates formal proof techniques and abstraction mechanisms within a common framework to create an environment for scientific software design. It focuses upon recent developments concerning abstraction of data types, data base management, specification and program verification. A finite element software library has been developed to evaluate the potential of these advances for large-scale scientific and technical software packages. The systematic and pragmatic approach to software design suggested by the ATES method may help software engineers to increase the quality of industrial software, by using on a wider scale abstract programming languages and compliance checking techniques.
Häftad, Engelska, 1991
559 kr
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Delta-4 is a 5-nation, 13-partner project that has been investigating the achievement of dependability in open distributed systems, including real-time systems. This book describes the design and validation of the distributed fault-tolerant architecture developed within this project. The key features of the Delta-4 architecture are: (a) a distributed object-oriented application support environment; (b) built-in support for user-transparent fault tolerance; (c) use of multicast or group communication protocols; and (d) use of standard off the-shelf processors and standard local area network technology with minimum specialized hardware. The book is organized as follows: The first 3 chapters give an overview of the architecture's objectives and of the architecture itself, and compare the proposed solutions with other approaches. Chapters 4 to 12 give a more detailed insight into the Delta-4 architectural concepts. Chapters 4 and 5 are devoted to providing a firm set of general concepts and terminology regarding dependable and real-time computing. Chapter 6 is centred on fault-tolerance techniques based on distribution. The description of the architecture itself commences with a description of the Delta-4 application support environment (Deltase) in chapter 7. Two variants of the architecture - the Delta-4 Open System Architecture (OSA) and the Delta-4 Extra Performance Architecture (XPA) - are described respectively in chapters 8 and 9. Both variants of the architecture have a common underlying basis for dependable multicasting, i. e.
Häftad, Engelska, 1992
1 110 kr
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The first ESPRIT programme contained several ambitious projects. of which REQUEST. with its wide brief covering all issues of assessment of quality and reliability of software process and product. was one. Within REQUEST. the research described in this volume. concerning those special problems of software that is required to have extremely high reliability. was particularly difficult and ambitious. The problems of software reliability are essentially twofold. On the one hand there is a concern with methods for achieving adequate reliability. on the other hand there is a need to evaluate what has actually been achieved in a particular case. Naturally. far more effort has been spent over the years on the former problem; indeed. there is a sense in which all of conventional software engineering can be seen as a response to this problem. However. it is becoming clearer than ever that we can only claim to have a truly sCientific approach. and so justify the description software engineering. when we are able to measure the attributes of process and product. It is still common to find software development methods recommended to users on purely anecdotal grounds. This is not good enough. Rational choices between rival approaches can only be made on the basis of quantified costs and benefits. Even more worrying is the tendency to argue that a software product can be depended upon merely because it has been developed by honest men using such anecdotal 'good practice'.
Häftad, Engelska, 1992
1 110 kr
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This book presents results from the "ESPRIT Project 393" "Construction and Interrogation of Knowledge Bases Using Natural Language Text and Graphics" (ACORD). The project involved more that 50 people over five years, and included industrial and academic partners from three countries. The main result of the project is a highly sophisticated human-machine interface allowing the construction and interrogation of a common knowledge base in English, French, and German, using both natural language and graphics. Chapter 1 presents an overview of the project. Chapters 2-4 develop specific issues concerning the grammar models used (functional grammars and unification categorical grammars). Chapter 5 discusses anaphora resolution and chapter 6 text generation. Chapter 7 explains the integration of text and graphics, and chapter 8 discusses the knowledge base module. The contributors are theoretically oriented and strongly concerned with generalization and the underlying background of potential further developments.
Häftad, Engelska, 1992
1 110 kr
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Writing documentation is an integral part of any technical product development. A significant amount of time is spent describing the product functionality, giving insights into technical details, providing maintenance instructions, specifying marketing information, writing user manuals, etc. As the creation of such documentation is generally a source of higher production costs, many large companies are realising the need to increase the efficiency of documentation handling. Simple documents consisting of only a few pages can be developed on simple systems. Basic components of such systems are an editor handling text and graphics, file storage, and a printer. Such configurations, however, are not sufficient to handle professional documentation as produced by larger companies. Detailed studies of technical documentation requirements have revealed that in particular the following functionality is not usually provided by such simple documentation systems: Technical documentation is often very large; documents having hundreds or even thousands of pages are not exceptional. Due to size and complexity, technical documentation is developed most often by a team of authors. A system for technical documentation has to provide functionality supporting the organisation of a group of authors. Technical documentation usually consists of many different documents combined into one large documentation for a particular product. The optimum organisation of the storage and retrieval of documents is crucial for the performance and acceptability of the system. The functionality offered by normal file systems is not adequate to organise complex systems.
Häftad, Engelska, 1993
1 078 kr
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This volume reports the achievements of an ESPRIT project on the problems linked with the control of lightweight robots. It describes the design and development of a high-performance robot for use in Flexible Automated Assembly System (FAAS) environments.
Häftad, Engelska, 1993
542 kr
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This book covers the various aspects of the development of an integrated product and process modelling system using advanced computer technologies. It describes languages and methodologies for developing an information reference model, system architectures, a link with emerging new standards such as ISO/STEP and CIM/OSA, and a new approach for the definition of model semantics. It discusses practical aspects of the usage and integration of computer aided design, planning and production systems, and shows how the reference model can be applied. Concrete practical examples are given for two demonstration parts: a sheet metal part and a ship propeller blade. Much attention has been devoted to making the subject matter easy to understand for a wide audience. The reference model is presented in easy-to-grasp chunks in a graphical, informal way, and many figures support the text. The reader should gain a clear impression of the various technical aspects of CIM systems using modern techniques corresponding to emerging new standards. Aspects of future systems are also included.
Del 1 - Research Reports Esprit
CIMOSA: Open System Architecture for CIM
Häftad, Engelska, 1993
542 kr
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Enterprise operation efficiency is seriously constrained by the inability to provide the right information, in the right place, at the right time. In spite of significant advances in technology it is still difficult to access information used or produced by different applications due to the hardware and software incompatibilities of manufacturing and information processing equipment. But it is this information and operational knowledge which makes up most of the business value of the enterprise and which enables it to compete in the marketplace. Therefore, sufficient and timely information access is a prerequisite for its efficient use in the operation of enterprises. It is the aim of the ESPRIT project AMICE to make this knowledge base available enterprise-wide. During several ESPRIT contracts the project has developed and validated CIMOSA: Open System Architecture for CIM. The CIMOSA concepts provide operation structuring based on cooperating processes. Enterprise operations are represented in terms of functionality and dynamic behaviour (control flow). Information needed and produced, as well as resources and organisational aspects relevant in the course of the operation are modelled in the process model. However, the different aspects may be viewed separately for additional structuring and detailing during the enterprise engineering process.
Del 1 - Research Reports Esprit
Cooperation Among Organizations
The Potential of Computer Supported Cooperative Work
Häftad, Engelska, 1993
559 kr
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This book reports research conducted in the ESPRIT project PECOS, which investigated the requirements for effective CSCW (Computer Supported Cooperative Work) with special reference to cooperation among organisations in large projects. It indicates commercial areas where CSCW technology can be applied, and examines such methodological issues as enterprise modelling, system architecture, and the incorporation of artificial intelligence techniques. PECOS studied two practical contexts. The first was the management of a complex industrial project, the construction of a high-speed train for the Italian railway, which required cooperation among four private companies. The second was the design of an information system for water management in the Lombardy region, which required cooperation among several different branches of public administration.fhese contexts were analysed, applying techniques of enterprise modelling, in order to identify requirements for CSCW systems. The composition of the book is as follows. Chapter 1 presents some highlights of the vast literature on cooperation, including results from psycholOgy, sociology, management science, linguistics, and artificial intelligence. Chapter 2 reviews the much shorter history of CSCW, with reference to a catalogue of existing systems given in an appendix at the end of the book. The next four chapters contain our original findings.
Häftad, Engelska, 1993
1 110 kr
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In the early 1980s, a trend towards formal undeIStanding and knowledge-based assistance for the development and maintenance of database-intensive information systems became apparent. The group of John Mylopoulos at the UniveISity of Toronto and their European collaboratoIS moved from semantic models of information systems design (Taxis project) towards earlier stages of the software lifecycle. Joachim Schmidt's group at the University of Hamburg completed their early work on the design and implementation of database programming languages (Pascal/R) and began to consider tools for the development of large database program packages. The Belgian company BIM developed a fast commercial Prolog which turned out to be useful as an implementation language for object oriented knowledge representation schemes and as a prototyping tool for formal design models. Case studies by Vasant Dhar and Matthias Jarke in New York pointed out the need for formally representing process knowledge, and a number of projects in the US and Europe began to consider computer assistance (CASE) as a viable approach to support software engineering. In 1985, the time appeared ripe for an attempt at integrating these experiences in a comprehensive CASE framework relating all phases of an information systems lifecycle. The Commission of the European Communities decided in early 1986 to fund this joint effort by six European software houses and research institutions in the Software Technology section of the ESPRIT I program. The project was given the number 892 and the title DAIDA - Development Assistance for Intelligent Database Applications.
Del 1 - Research Reports Esprit
COMANDOS Distributed Application Platform
Häftad, Engelska, 1993
559 kr
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The last decade has seen an enormous change in the capability of information technology and also in the expectations of what that technology can provide. The personal computer revolution at the start of the 1980s brought computing power to the desktop in a way that, for the first time, non-technical users could understand and use in their everyday work. The invisible wall of mystique that had separated computers from their potential users for so long had been demolished, and the world of business would never be the same again. As we entered the 1990s, a decade later, we witnessed the beginnings of another revolution. This revolution is not so obvious, but its implications are even more far-reaching. It is not so obvious because it is happening behind the scenes, in the communications and computing infrastructure that support the machines that can be seen sitting on office desks and, increasingly, being carried with business people as standard equipment along with a briefcase and umbrella. It is potentially more far-reaching for the following reason. The per sonal computer of the 1980s brought computing power to the user in a box that could fit on a desk. The revolution of the 1990s brings to the user computing power that is distributed across the whole planet.
Del 1 - Research Reports Esprit
Ultra-wideband Coherent Optical LANs
Häftad, Engelska, 1993
542 kr
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The content of this book is the result of the work and the experiences of an interdisciplinary and strictly European group of researchers who have attempted to give birth to a new fibre communication network concept by exploiting the potential benefits of optical coherent transmission. The run towards this ambitious goal started in 1985 on the basis of the ESPRIT program incentives by an "ad hoc" consortium of industrial partners and research institutions. The first three years were dedicated to a feasibility study carried out by a reduced number of "pioneers". In 1989 the team was extended to eleven partners. There was already clear evidence of the increasing interest in Europe in exploring the actual limits of optical fibre coherent systems; the project had innovative and very advanced features that were gradually refined by incorporating the latest technological developments to which it has directly contributed. The main objective of the project targeted the development of the necessary building blocks to show experimentally the performance and the flexibility built into the proposed concept of multi-channel ultra-wideband network. The system concept developed within this project associates optical frequency division multiplexing with a suitable network architecture and management techniques to allow very high flexibility and efficiency in handling simultaneous transmission over the network (on each optical frequency) of multiple virtual channels each operating with a wide range of information rates ranging from a fraction of a Mb/s up to a maximum value in excess of 160 Mb/s.
Del 1 - Research Reports Esprit
CAD Geometry Data Exchange Using STEP
Realisation of Interface Processors
Häftad, Engelska, 1993
542 kr
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The Product Data Technology Advisory Group, short PDTAG, was established on 30 September 1992 under the auspices of the ESPRIT CIME Division of the Directorate General XIII of the European Commission. Its goals include promoting European cooperation and improving the European infrastructure in Product Data Technology, particularly in connection with the new standard STEP (ISO 10303). The dissemination of information on Product Data Technology and on European contributions to STEP is of crucial importance to this development. The current volume is the first title in a new PDTAG subseries to Springer Publishers' Research Reports ESPRIT. This new subseries intends to form a comprehensive repository of publications on Product Data Technology resulting from ESPRIT Projects and from European contributions to standardisation based on ISO/STEP. PDTAG welcomes the opportunity to make this information more accessible under the format of a coherent subseries within the established framework of Research Reports ESPRIT. Much valuable background on the new international PDT standard can thus be found in the same collection.
Häftad, Engelska, 1993
559 kr
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Data fusion, the ability to combine data derived fromseveral sources to provide a coherent, informative, anduseful characterization of a situation,is a challengingtask. There is no unified and proven solution which isapplicable in all circumstances, but there are manyplausible and useful approaches which can be and are used tosolve particular applications.This volume presents the proceedings of the workshop DataFusion Applications hosted in Brussels by the 1992 ESPRITConference and Exhibition. It contains 22 papers from 69experts,who present advanced research results on datafusion together with practicalsolutions to multisensor datafusion in a wide variety of applications: real-time expertsystems, robotics, medical diagnosis and patientsurveillance, monitoring and control, marine protection,surveillance and safety in public transportation systems,image processing and interpretation, and environmentalmonitoring. The research forms part of the ESPRIT projectDIMUS (Data Integration in Multisensor Systems).
Del 1 - Research Reports Esprit
Integration of Graphics and OSI Standards
Häftad, Engelska, 1993
559 kr
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The offices of GMD-FOKUS in Berlin provided the venue for a meeting in December 1987 which signalled the birth of the ARGOSI project. The proposal gradually took shape over the following months, and after merging with another project proposal in the field of standardization of computer graphics, finally received funding from the Esprit programme in March 1989. The project stemmed from a recognition of the importance of computer graphics a'i an ena bling technology in many application areas, and of the need to build bridges between computer graphics and telecommunications. The overall aims of the pro ject were twofold: • Advance the state of the art in the transfer of graphical information across international networks. • Improve quality and applicability of standards in this area. This book records the key results of the project and the contributions the project has made to standardization related to the transfer of graphical information across open networks. Contributions have included a demonstration of a prototype appli cation - a road transport information system running over public international of a new data networks - shown at the Esprit '91 exhibition, the standardization FT AM document type allowing structured access to graphical information (represented according to the Computer Graphics Metafile (CGM) standard) and major contributions to a mapping of the X-Windows protocol onto an OSI stack. The project also organized two international workshops. the first on Graphics and Communications, and the second on Distributed Window Systems.