5 research outputs found

    Local computer networks :a study

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    This thesis examines the principles underlying the design of local computer networks. It then reviews the features of several existing long-haul and local networks. The design and construction of Bassernet - a network using an Ethernet type protocol on a loop topology is described. Measurements of the performance of Bassernet are presented and commented on. Finally, some speculations are made on the future of the Bassernet network

    Factory environment networking :

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    DECENTRALIZED CONTROL OF DISTRIBUTED PROCESSING SYSTEMS

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    This thesis presents a methodology for implementing decentralized scheduling for distributed systems. The environment in which the controlling entities make decisions is stochastic and can be described as uncertain since each entity may have a different view of the system state. As a consequence, these entities may make inconsistent decisions. The methodology is based on defining the system state as a set of distributions and using a queueing model to predict the future behaviour of the system. The predicted state is used to schedule the individual job tasks based on minimum predicted job response time. A hypothetical real system is simulated. The methodology was tested using different queueing models and under different environments. An evaluation of the proposed technique using the simulation results indicates a consistent performance improvement over the no network case. Suggestions for extending this research are also presented

    Design and simulation of the distributed loop computer network (DLCN)

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