Community Computing - Advanced Design Approaches to Emerging Software Systems - page 211

Figure 5. Simulation of CHILDCARE (a) and COEX (b) community computing system

community manager for Find_Person commu-
nity, and the community manager then initiates a
Find_Person community by casting necessary
members. The robot taking the request sends the
profile of the lost child to all robots, guides, and
salesmen in the COEX-Mall. After robots receive
the profile, they begin to search for the child while
patrolling. At this time, each robot takes at least
two roles, Patrol_COEX community and Find_
Person community. Simulation of the COEX
community computing system is shown in Figure
5(b).

and BRAIN. However, most existing approaches
are not deeply concerned with cooperative work.
Those works mentioned cooperation but failed to
provide insight into the foundation of their models
or systems. Cooperation is an essential aspect to
achieve our goal, so we surveyed existing coop-
eration approaches such as CSCW (Computer-
Supported Cooperative Work) to fill the hole. In
this section, we briefly introduce each previous
work and declare our motivation.

Pervasive System
Development Approaches

RELATED WORK First of all, we introduce two middleware based

approaches. Their objective is to offer an infra-
structure to manage resources, sense context
information, and assist in the development and
execution of pervasive applications. In this section,
we explore two major middleware approaches to
offer pervasive services: Gaia and PICO.

As mentioned above, our goal is to develop a
cooperative pervasive system. In order to find a
pathway and reach our goal, we surveyed existing
development approaches for pervasive systems
such as PICO or GAIA. There have been various
approaches applied toward pervasive system de-
velopment. Among those approaches, middleware
approaches are used in several projects such as
PICO and Active Space. Meanwhile, the multi-
agent based approaches are also frequently used in
several research projects such as Gaia, AALADIN

• Super Spaces (Al-Muhtadi, 2004): In the

Active Spaces Project (Roman, 2000), an
experimental middleware infrastructure,
called Gaia, was introduced to coordinate
pervasive software objects and hetero-