Concept

Fire alarm system

Related publications (34)

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Cryptography in radio frequency identification and fair exchange protocols

Gildas Avoine

This PhD thesis focuses on fair exchange protocols and radio frequency identification protocols. Fair exchange stems from a daily life problem: how can two people exchange objects (material or immaterial) fairly, that is, without anyone being hurt in the e ...

EPFL2005

Failure Location in Transparent Optical Networks: The Asymmetry Between False and Missing Alarms

Patrick Thiran, Xuan Hung Nguyen

Failure location in transparent optical networks is difficult because of the large amount of alarms that a failure can trigger and because of corrupted alarms. One problem that network operators often face is how to set the thresholds in monitoring devices ...

2005

Security Management in Data Processing Networks

Sonja Buchegger

NOVELTY - An event received by a node, from a neighboring node, in the network is evaluated, to determine whether the event satisfies predetermined security test. The entry associated with the neighboring node in the topology data is modified, if the event ...

2002

Surveillance continue des transformateurs de puissance par réseaux de neurones auto-organisés

Alain Schenk

An outage of a power transformer, generally, has heavy financial consequences for electric power systems utilities. In order to prevent any failure and to optimize their maintenance, a growing number of operating parameters are measured on-line. The import ...

EPFL2001

Fault location algorithms for optical networks

Today, there is no doubt that optical networks are the solution to the explosion of Internet traffic that two decades ago we only dreamed about. They offer high capacity with the use of Wavelength Division Multiplexing (WDM) techniques among others. Howeve ...

EPFL2000

An efficient Fault Localization Algorithm for IP/WDM Networks

Patrick Thiran, Carmen Mas

We propose an algorithm for localizing multiple failures in an IP/WDM network. They can be either hard failures (unexpected events that interrupt suddenly the established channels) or soft failures (events that progressively degrade the quality of transmis ...

2000

Muteness Failure Detectors, Specification and Implementation

Rachid Guerraoui, André Schiper

This paper extends the failures detector approach from crash-stop failures to muteness failures. Muteness failures are malicious failures in which a process stops sending algorithm messages, but might continue to send other messages, e.g. 'I-am-alive' mess ...

1999

Fault Localization at the WDM Layer

Jean-Yves Le Boudec, Patrick Thiran, Carmen Mas

A single failure in a communication network may trigger many alarms. When the communication network uses optical fibres as transmission medium and increases its capacity by using Wavelength Division Multiplexing (WDM), the number of alarms and the difficul ...

1999

Fault Localization at the WDM Layer

Jean-Yves Le Boudec, Patrick Thiran, Carmen Mas

We propose an Alarm Filtering Algorithm (AFA) for the fault management of an optical network that supports multiple failures and works in the presence of passive elements, that is, network elements which may fail but never generate an alarm (e.g. optical f ...

1999

Fault Localization at the WDM layer

Jean-Yves Le Boudec, Patrick Thiran, Carmen Mas

1999