step in this process is knowledge de-
contextualization. That is, extract knowledge from
its context such that it is not bound to the situation
from which it stems, thus enabling the reusability of
this knowledge in different learning situations. The
next step is planning. That is, define a set of goals
and requirements that need to be achieved. Good
planning will leverage the created learning object to
its best use. Modeling and modularity are the
cornerstones of the externalization process. It is
crucial to disaggregate a learning resource into tiny
learning objects and identify how these objects relate
to each other. Those modular learning objects can
then be reused by different user communities for
diverse purposes. Once the objectives of the new
learning resource are defined and modular learning
objects are identified, it is possible to move to the
development step using all software and hardware
means that are able to reduce the time to develop
valuable learning content such as simulations and
experiments. The result of the application of
software engineering concepts in the knowledge
capturing process will be granular, organized and
reusable learning objects.
Successful knowledge capturing also requires the
use of metadata for describing learning objects as
well as adopted, common, open and accredited
standards (Hodgins, 2000). According to Hodgins,
metadata is the full and rich set of information
needed in order to find, filter, select, and combine
the information. It is also crucial to use standards for
metadata and learning objects to assure accessibility,
interoperability, adaptability, reusability, durability,
and affordability of learning (Hodgins, 2000).
Furthermore, since knowledge must be current in
order to be of value, attention should be paid to the
development of up-to-date and dynamic learning
resources. A possible way to achieve this is, instead
of inserting an existing learning object into a
learning resource, just to point directly to the
community which is currently working on the
development of this object. To achieve best results
from the externalization process, a learning system
should include a standard-based, collaborative and
effective knowledge capture system that supports
learning communities in designing, creating,
reviewing, modifying, and posting up-to-date and
valuable learning objects in a short time. This
system should particularly include an intelligent
component for automatic learning object annotation,
which is based on powerful data mining algorithms
and advanced pattern recognition techniques.
4.3 Combination
As discussed in the previous section, the output of
the externalization process is granular, annotated,
classified, context free, standard-based, and up-to-
date learning objects (i.e. explicit knowledge). These
quality learning objects can now be shared,
disseminated, stored, reused, analyzed, re-
categorized, re-contextualized, reconfigured,
reorganized, combined, and delivered. The
manipulation of existing learning objects leads to
new, possibly more complex learning objects. This
process is referred to as combination. The
combination process is supported by learning
repositories to store and manage learning objects and
their associated metadata, as well as learning paths
and activities. In a learning repository, new modular
learning objects can be added and existing ones can
be analyzed, compared, sorted, restructured and
associated. This results in new learning object
configurations and combinations or new learning
paths that can be applied to address different learner
needs and solve new problems.
In addition to learning repositories, the
combination process is most efficiently supported in
collaborative environments utilizing information
technology (Nonaka, Konno, 1998). Stacey
mentioned that active and alive learning
environments are more like learning communities
than learning repositories. They focus on bringing
people to people not just people to content (Stacey,
2003). According to this, learning has to occur
within a social context which supports listening,
viewing, reading, writing, speaking, commenting,
suggesting, asking, discussing, disseminating, and
sharing of learning objects and best practices among
community members. To help building the required
personal connections in an online social network, the
use of synchronous and asynchronous
communication tools is crucial. In addition to
learning repositories and learning communities,
powerful access and search capabilities across
content, metadata and people are required. A learner
should be able to query the learning system to
quickly locate appropriate learning resources, as
well as persons who share his/her interests or experts
who can help achieving better results.
4.4 Internalization
Internalization is the conversion of explicit
knowledge into new tacit knowledge (Nonaka,
Konno, 1998). In the learning process,
internalization refers to the embodying of
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