Abstract

Abstract. In this paper we discuss our experiences in creating lectures-on-demand using Flash streams based on MS PowerPoint slides that are enriched by author's comments (audio as well as video streams). We depict the drawbacks concerning up-to-dateness of lecture content and compatibility with different desktop and mobile devices. According to this, we focus on our workflow to create lectures using podcasts including slides, animations and movies that is independent from the lecturers' presence. In contrast to podcasts recording classroom lectures, we propose to store authors' explanations as text and to add his comments to the learning material in synthetic voice. Out-dated material can be exchanged without creating new video sequences in lecture time and extent and avoids time consuming re-taping and editing of existing course content. Moreover, splitting learning modules into small pieces facilitates and accelerates work during the regular update process. With this approach we are able to improve sustainability, since it saves cost and allows just in time production of rapidly changing learning content.

Highlights

  • The establishment of mass applications like Google Maps, Bing Maps, etc. has been increasing the demand and the distribution of geoinformation over the last decade

  • City Geography Markup Language (CityGML) is implemented as an application schema of the Geography Markup Language 3.1.1, the extensible international standard for geodata exchange and encoding issued by the Open Geospatial Consortium (OGC) and the ISO TC211

  • In order to satisfy the demand on information about urban modelling, GML and CityGML, a desktop e-learning course on CityGML has been developed at the Technische Universität Berlin

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Summary

INTRODUCTION

The establishment of mass applications like Google Maps, Bing Maps, etc. has been increasing the demand and the distribution of geoinformation over the last decade. The Institute of Geodesy and Geoinformation Science (IGG) at the Technische Universität Berlin has made substantial contributions to the development of standards in the OGC, especially to the encoding standard „OpenGIS City Geography Markup Language (CityGML)“ (Open Geospatial Consortium, 2008). Against this background we have perceived an increasing demand on learning material providing depictive explanations and examples of those standards and its usage instead of reading the extensive but often tedious encoding documentation. The on-going process of the development of standards leads to incidental changes of the lecture material concerning releases and versions, content, etc. – a challenge for module developers to keep learning material up-to-date

Urban Information Modelling
CityGML – an Application Schema of GML
DESKTOP BASED TRAINING COURSE
Concept
Lectures-on-Demand
LESSONS LEARNED
Drawbacks
Moving to Mobile Learning
TECHNICAL APPROACH
Media Files
Methods for Creating Video Podcasts
Creating Sustainable Course Content
Publication
RSS Feeds
SUMMARY
Full Text
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