Military Communications and Information Technology: A Trusted ...

244 Military Communications and Information Technology...
The event location is determined on the basis of data received from the GPS module
or by indicating the exact place of the event on an embedded map. Selected
events are grouped into three categories: traffic incidents, traffic difficulties and
weather difficulties. For events of the first category there is also an opportunity to
submit information about injured people and event results.
The application is written in Java, based on the following libraries: Android
SDK, Jain-SIP – SIP protocol implementation for Android [9], Google APIs Addon
[10]– APIs providing the possibility of identify the events location on the builtin
Google map.
The DM receives messages about events from the CM and passes them to
suitable subscribed customers. These are public safety services (i.e. the police,
fire brigade, ambulance, etc.) that are called in emergency situations to minimize
the risk of the danger that has been reported.
For the purpose of subscription management the endpoints of the customers
will be stored in a database. They are divided into notification groups which
consist of customers interested in particular event types. For example, information
about the traffic accident with injured persons will be passed to the police, disposer
of rescue ambulance service or emergency call center. When the reported event
is a factory fire and the terrain contamination, notification will be passed to the fire
brigade, police, disposer of rescue ambulance and sanitary and epidemiological
station. The message coming from the CM contains the event description as well
as the name of notification group. This allows the dispatcher to send notification
to group members. The notification message also includes the geographical coordinates
of the event as well as essential information about it.
IV. INSIGMA event ontology
Ontologies at the run-time are used in the situations where the domain model
cannot be fully elaborated during the system development (some domain aspects
are unknown or uncertain) or a kind of reasoning is required. In case of ENS
there is a need to reason about threats and dangers related to the traffic detected
in the INSIGMA monitoring subsystem on the basis of the event description. In case
of ENS IEO is used in the RM.
IEO is typical example of run-time ontology model describes specific domain
of knowledge: road events (like car collision, knocking down a pedestrian,
damaged road surface, leakage of dangerous substance, etc.), weather events (like
rain, snow, below freezing temperature) and threats related to occurred incident on
traffic (like wet surface danger in case of rain precipitation). On the basis of the event
description (provided by the reporting module) the reasoning mechanism supported
by the event ontology and a set of rules enables to classify the event, define required
action of the system and then generate notification to public safety services.