Proceedings ISAD 93: International Symposium on Autonomous Decentralized Systems

March 30 1993-April 1 1993

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Displaying Results 1 - 25 of 57
  • The high performance computing and communications initiative in the US

    Publication Year: 1993
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (38 KB)

    Summary form only given, as follows. In the future, people will collaborate in real time and share virtual reality environments. In addition, very large databases will be monitored by knowbots with sufficient intelligence to present meaningful information as moving objects in an interactive environment. The high performance computing and communications initiative (HPCC) was started to support rese... View full abstract»

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  • Proceedings ISADS 93. International Symposium on Autonomous Decentralized Systems (Cat. No.93TH0502-5)

    Publication Year: 1993
    Request permission for commercial reuse | PDF file iconPDF (111 KB)
    Freely Available from IEEE
  • On a self-organizing property of genetic algorithms

    Publication Year: 1993, Page(s):338 - 344
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (428 KB)

    The dynamics of a genetic algorithm (GA) is investigated from the viewpoint of self-organization. The dynamics of the simple GA is modeled by difference equations. The equations are examined by computer simulation, and it is shown that the GA selects a genotype robust to a mutation. This property becomes remarkable when a crossover operator is introduced. The GA is applied to a simple optimization... View full abstract»

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  • Design of social matching algorithms for distributed and autonomous environments

    Publication Year: 1993, Page(s):345 - 351
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    The authors discuss the design of distributed and autonomous algorithms for producing social matching such as dancing pairs from groups of boys and girls, roommates for a boy dormitory, and job placement in the employment market in message-exchange network environments. The matching process must preserve personal privacy, stability of matching, preference-based autonomous behavior, and conformabil... View full abstract»

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  • Using traders for autonomous service provision in intelligent networks

    Publication Year: 1993, Page(s):93 - 99
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (628 KB)

    The evolution of the telecommunications environment toward an open distributed processing system, influenced by the recent developments in the framework of open distributed processing (ODP) and intelligent networks (INs), is addressed. The trader is a component for solving autonomy issues, since entities/objects which register for cooperation with other entities at the trader are limiting their au... View full abstract»

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  • Overhead reduction in distributed simulation

    Publication Year: 1993, Page(s):352 - 358
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB)

    Optimistic distributed discrete-event simulation incurs significant memory overhead because it stores state vectors with each processed but uncommitted message. The authors propose an application-independent scheme that substantially reduces this overhead, while also improving the simulation performance. Global control in optimistic simulation is replaced by local conservative control, and the con... View full abstract»

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  • A framework for the development of object-oriented distributed systems

    Publication Year: 1993, Page(s):44 - 51
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    A framework for the development of distributed object-oriented systems in heterogeneous environments is presented. This model attempts to incorporate concepts of distributed computing technology together with software engineering methods. A tool has been developed to enforce the model by means of a high-level specification language and an automatic code generator. However, it is emphasized that th... View full abstract»

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  • Supporting user autonomy and object sharing in distributed systems: The RHODOS trading service

    Publication Year: 1993, Page(s):100 - 106
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (624 KB)

    It is demonstrated that the design of a naming facility for the RHODOS system that provides the maximum possible autonomy and flexibility to users yet at the same time allows them to share all accessible objects is feasible. It is shown that autonomy and sharing can be achieved if four basic constructs are introduced. First, two groups of sharable objects are distinguished in the RHODOS domain: th... View full abstract»

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  • Automatic service availability management

    Publication Year: 1993, Page(s):360 - 366
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (580 KB)

    A new kind of distributed system service called availability management service is introduced. It is responsible for ensuring that the critical services of a distributed system remain continuously available to users despite arbitrary numbers of concurrent node removals and node restarts caused by failures, maintenance, and growth. The description of many details involved in a realistic design is s... View full abstract»

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  • Decentralized monitoring and diagnosis of manufacturing processes

    Publication Year: 1993, Page(s):384 - 389
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB)

    A decentralized control method that augments Boolean logic control to provide greatly enhanced diagnostics and monitoring of systems with discrete-valued sensors and actuators is described. Unlike conventional Boolean logic, where logic is associated with the actuators, a behavior and timing model is described for both sensors and actuators, called control elements (CEs). The behavior model is def... View full abstract»

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  • Negotiation and conflict resolution within a community of cooperative agents

    Publication Year: 1993, Page(s):421 - 427
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (600 KB)

    UPShell, a tool for building up coarse grain semiautonomous cooperating agents (which are expert systems) is presented. Negotiation and conflict resolution protocols have been integrated into the agents, whose architecture is also presented. Several basic functionalities dealing with task scheduling as well as cooperation policies are briefly specified. A realistic scenario, involving a sophistica... View full abstract»

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  • In search of service engineering-The RACE experience

    Publication Year: 1993, Page(s):12 - 19
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    The RACE Programme, a major European effort to develop and implement advanced broadband communications called IBC (integrated broadband communications), is discussed. The concept of IBC denotes the integration of broadband data, audio, and image communications. It is suggested that the key problem is to master growing system complexity in order to deliver an integrated set of capabilities (service... View full abstract»

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  • Hybrid cell: An implementation of an object based strongly distributed system

    Publication Year: 1993, Page(s):52 - 61
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (924 KB)

    The cell is a framework for the design of strongly distributed object based systems that preserves the autonomy of the nodes. The hybrid system was transformed to a cell prototype with the introduction of a membrane providing the services of type matching, object mapping, and connection trading. A type matching language was designed, and the connection and trading protocols were defined View full abstract»

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  • Functional paradigm for designing dependable large-scale parallel computing systems

    Publication Year: 1993, Page(s):108 - 114
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (636 KB)

    The authors propose the use of a functional language and of a dataflow computing model for the design of large-scale parallel computing systems for which dependability, in its aspects of reliability, timeliness, parallelism, and distributedness, is the requirement of main concern. The design methodology is sufficiently flexible to allow for verification and validation of such systems from the very... View full abstract»

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  • Flight plan management in a distributed air traffic control system

    Publication Year: 1993, Page(s):323 - 329
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (612 KB)

    The authors explore how large-scale replication can enhance the availability of data in a loosely coupled distributed system. The concern is with air traffic control systems that are geographically distributed and impose strict constraints of availability. In this framework, a replication system providing a weak consistency of data is proposed. The specific properties of flight plan data are studi... View full abstract»

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  • An economy for managing replicated data in autonomous decentralized systems

    Publication Year: 1993, Page(s):367 - 375
    Cited by:  Papers (11)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (676 KB)

    A new approach to performing resource allocation in autonomous distributed computer systems is explored. As opposed to previous work which is based on interprocessor cooperation, the distributed system is modeled as a competitive society of microeconomic agents. The model is applied to the problem of managing distributed, replicated data objects. In this economy, jobs and transactions submitting r... View full abstract»

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  • Small intestinal movements in vivo and the neuro-mechanical control mechanisms

    Publication Year: 1993, Page(s):407 - 413
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    A major intestinal movement known as peristalsis was studied as an autonomous distributed system. Although the small intestine takes a homogeneous structure along the longitudinal axis, the intestinal movement is autonomically systematized to transport the contents smoothly by itself. To study control mechanisms, a dog's small intestinal movements were observed in vivo, and two types of peristalti... View full abstract»

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  • An autonomous decentralized process computer system for steel production

    Publication Year: 1993, Page(s):390 - 397
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    The reconstruction of the total process control system for cold rolling of steel is described. The goals were to allow the production of more kinds and smaller lots of products with higher quality; to achieve a more flexible system, with high expandability and maintainability; and to increase software productivity. To satisfy these requirements, an autonomous decentralized architecture was adopted... View full abstract»

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  • Distributed feedback control for redundant manipulators based on virtual arms

    Publication Year: 1993, Page(s):143 - 149
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (420 KB)

    A distributed feedback control for redundant manipulators based on virtual arms is proposed. The virtual arm has the same kinematic structure as the manipulator except that its end-point is located on the joint or link of the manipulator. Therefore, the configuration of the redundant manipulator can be represented as a set of virtual arms. Dynamic behavior of each subsystem is based on an end-poin... View full abstract»

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  • On the competitiveness of autonomous servers

    Publication Year: 1993, Page(s):158 - 164
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (556 KB)

    Autonomous servers are introduced as a mechanism for solving many online problems, such as dispatching elevators in an office building, taxis in a city, or disk heads in a system with multiple copies of a file. The difference between autonomous servers and conventional online algorithms is that no centralized controller coordinates the servers. In essence, distributed online algorithms are studied... View full abstract»

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  • Y-Architecture for the integration of autonomous components

    Publication Year: 1993, Page(s):21 - 27
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    The Y architecture, which provides a platform for the support of cooperative applications in a heterogeneous, open distributed computing environment, is presented. Y design concepts include domains for the structuring of the environment and the grouping of components, a service concept for the description of component functions and interfaces, and an extended client/server paradigm, which defines ... View full abstract»

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  • An autonomous decentralized system for constraint-oriented problem solving involving continuous and fuzzy variables

    Publication Year: 1993, Page(s):63 - 69
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    A novel way of solving constraint satisfaction problems by using autonomous decentralized systems is introduced. First, the componential constraints are further decomposed into their structural and elastic parts. Second, the elastic parts are treated by interactive dynamics among autonomous decentralized problem solving processes. Third, the structural part is treated in a centralized logic based ... View full abstract»

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  • A requirements language for autonomous decentralized systems development

    Publication Year: 1993, Page(s):115 - 121
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (792 KB)

    A framework for developing autonomous decentralized systems (ADSs) using a frame-and-rule oriented requirements language (FRORL), is presented. FRORL is a logic-based requirements specification language and serves multiple roles for specifying users' requirements, for representing development knowledge, and for knowledge communications among decentralized autonomous agents. Using the machinery of ... View full abstract»

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  • Immune networks for cement plants

    Publication Year: 1993, Page(s):282 - 288
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB)

    Taking inspiration from the immune system mechanism, an application which identifies faulty sensors in the firing section of a cement plant by mutual recognition is presented. Some improvements of existing algorithms are described. Results using simulated data are reported and discussed View full abstract»

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  • Decentralized voting protocols

    Publication Year: 1993, Page(s):247 - 254
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (604 KB)

    Decentralized voting protocols, in which all nodes execute the same protocol and reach the same result in a decentralized and autonomous way, are proposed. When a decentralized voting protocol is implemented by using one-round message exchange, it requires n( n-1) messages, where n is the number of nodes. The number of messages can be reduced by using multiple-round mess... View full abstract»

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