 |
| Titel |
Earth Observation oriented teaching materials development based on OGC Web services and Bashyt generated reports |
| VerfasserIn |
T. Stefanut, D. Gorgan, G. Giuliani, P. Cau |
| Konferenz |
EGU General Assembly 2012
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250069873
|
|
|
|
|
|
| Zusammenfassung |
| Creating e-Learning materials in the Earth Observation domain is a difficult task especially
for non-technical specialists who have to deal with distributed repositories, large amounts of
information and intensive processing requirements. Furthermore, due to the lack of
specialized applications for developing teaching resources, technical knowledge is required
also for defining data presentation structures or in the development and customization of user
interaction techniques for better teaching results.
As a response to these issues during the GiSHEO FP7 project [1] and later in the
EnviroGRIDS FP7 [2] project, we have developed the eGLE e-Learning Platform [3], a tool
based application that provides dedicated functionalities to the Earth Observation specialists
for developing teaching materials. The proposed architecture is built around a client-server
design that provides the core functionalities (e.g. user management, tools integration,
teaching materials settings, etc.) and has been extended with a distributed component
implemented through the tools that are integrated into the platform, as described
further.
Our approach in dealing with multiple transfer protocol types, heterogeneous data formats
or various user interaction techniques involve the development and integration of very
specialized elements (tools) that can be customized by the trainers in a visual manner through
simple user interfaces. In our concept each tool is dedicated to a specific data type,
implementing optimized mechanisms for searching, retrieving, visualizing and
interacting with it. At the same time, in each learning resource can be integrated any
number of tools, through drag-and-drop interaction, allowing the teacher to retrieve
pieces of data of various types (e.g. images, charts, tables, text, videos etc.) from
different sources (e.g. OGC web services, charts created through Bashyt application,
etc.) through different protocols (ex. WMS, BASHYT API, FTP, HTTP etc.) and
to display them all together in a unitary manner using the same visual structure
[4].
Addressing the High Power Computation requirements that are met while processing
environmental data, our platform can be easily extended through tools that connect to GRID
infrastructures, WCS web services, Bashyt API (for creating specialized hydrological reports)
or any other specialized services (ex. graphics cluster visualization) that can be reached over
the Internet. At run time, on the trainee’s computer each tool is launched in an asynchronous
running mode and connects to the data source that has been established by the teacher,
retrieving and displaying the information to the user. The data transfer is accomplished
directly between the trainee’s computer and the corresponding services (e.g. OGC, Bashyt
API, etc.) without passing through the core server platform. In this manner, the eGLE
application can provide better and more responsive connections to a large number of
users.
References:
GiSHEO, On demand Grid services for high education and training in Earth
Observation, ESA-PECS project. http://gisheo.info.uvt.ro/.
EnviroGRIDS, Black Sea Catchment Observation and Assessment System
supporting Sustainable Development, FP7 project. http://www.envirogrids.net/.
Gorgan D., Stefanut T., Bacu V., Grid based Training Environment for Earth
Observation. Published by Springer Journal in Advances in Grid and Pervasive
Computing, LNCS 5529, pp. 98–109 (2009).
Gorgan D., Abbaspour K., Cau P., Bacu V., Mihon D., Giuliani G., Ray N.,
Lehmann A., Grid Based Data Processing Tools and Applications for Black Sea
Catchment Basin. IDAACS 2011 - The 6th IEEE International Conference on
Intelligent Data Acquisition and Advanced Computing Systems: Technology and
Applications 15-17 September 2011, Prague. IEEE Computer Press, pp. 223 -
228 (2011). |
|
|
|
|
|
|