Distributed virtual environments and VRML: an event-based architecture

Wray, Mike; Hawkes, Rycharde

doi:10.1016/s0169-7552(98)00022-1

Cited by 37 publications

(10 citation statements)

References 4 publications

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“…While traditional security techniques based on encryption can be employed in an event notification service to achieve certain kinds of security, such as authentication of publishers and integrity of notifications, the very nature of the service requires a rethinking of basic principles of secure communication. [14] object-oriented active databases [4] Architecture hierarchical client/server CORBA Event Service [13] NNTP [101 JEDI [5] TIB/Rendezvous [20] Keryx [21] Yu et al [22] SIENA general peer-to-peer IP multicast [6] iBus [18] (none known) Laboratory or the U.S. Government.…”

Section: Resultsmentioning

confidence: 99%

Achieving scalability and expressiveness in an Internet-scale event notification service

Carzaniga

Rosenblum

Wolf

2000

Proceedings of the Nineteenth Annual ACM Symposium on Principles of Distributed Computing

290

204

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This paper describes the design of SIENA, an Internet-scale event notification middleware service for distributed eventbased applications deployed over wide-area networks. SIENA is responsible for selecting the notifications that are of interest to clients (as expressed in client subscriptions) and then delivering those notifications to the clients via access points. The key design challenge for SIENA is maximizing expressiveness in the selection mechanism without sacrificing scalability of the delivery mechanism. This paper focuses on those aspects of the design of SIENA that fundamentally impact scalability and expressiveness. In particular, we describe SIENA'S data model for notifications, the covering relations that formally define the semantics of the data model, the distributed architectures we have studied for SIENA'S implementation, and the processing strategies we developed to exploit the covering relations for optimizing the routing of notifications.

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Section: Resultsmentioning

confidence: 99%

Achieving scalability and expressiveness in an Internet-scale event notification service

Carzaniga

Rosenblum

Wolf

2000

Proceedings of the Nineteenth Annual ACM Symposium on Principles of Distributed Computing

290

204

View full text Add to dashboard Cite

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“…It must be described by the original particle that is defined in space. (2). Particle system is not a static entity, the attribute of every particle is a time function.…”

Section: Flame Particle Systemmentioning

confidence: 99%

The Fire Emergency Response Plan Simulation Based on Particle System

Zhou

Zhang

Hua

2008

2008 First International Conference on Intelligent Networks and Intelligent Systems

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The emergency response plan to fire disaster can make people save their lives. The occurrence and spread of the fire is a complicated and stochastic process. The paper introduce a fire simulation model based on the particle system and discussed the rule of occurrence and spread in the fire hazard. In order to monitor the spread of the fire, a JAVA Applet is developed to show the fire data by External Authoring Interface. The related emergency response plan virtual reality system is developed by VRML. This model is adopted by the firefighting virtual reality system that used to help people find out the rule of the fire and defend the fire hazard.

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“…Also several specific publish/subscribe tools have been developed like Siena [8], JEDI [11], IBM's Gryphon [1] [4], Java Message Service [33], Tibco [34], Vitria [36], Keryx [38], Elvin [28]. They are mainly different for the architecture (hierarchical, distributed, peer-to-peer etc), for the performance and scalability of notifications, for the expressiveness of the subscribe language which allow subscribers to express the combination of events they are interested in.…”

Section: Relatedworkmentioning

confidence: 99%

On the event coordination in multi-component systems

Moro

Natali

2002

Proceedings of the 14th International Conference on Software Engineering and Knowledge Engineering

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In this paper we highlight some issues on the event consistencyinmulti-componentsystemsandthecoordination activities necessary to maintain it. We point out that the generation of events of a component should change with respect to its usage context but the burden of the coordination which maintains such a consistency is entrusted to the developer's cleverness because existing tools do not offer adequate solutions. Hence we present a model of the coordination activities in multi-component systems in order to clarify the space of the problem and possible points where to intervene. Then we propose a conceptual solution based on a set of types of abstract observers through which realizing the above mentioned coordination activities.

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Distributed virtual environments and VRML: an event-based architecture

Cited by 37 publications

References 4 publications

Achieving scalability and expressiveness in an Internet-scale event notification service

Achieving scalability and expressiveness in an Internet-scale event notification service

The Fire Emergency Response Plan Simulation Based on Particle System

On the event coordination in multi-component systems

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