Georg Turban

A framework for the development of educational presentation systems and its application

In this paper, a framework for the development of educational presentation systems is presented that eases and decouples the development of optional components that contribute to a very basic presentation system. Optional components are introduced in order to support audience response systems, lecture recordings or content sharing using a learning management system, for example. After the presentation of our design goals, we present selected aspects of our framework and the application to our presentation system.

A category based concept for rapid development of ink-aware systems for computer-assisted education

Presentation centric lectures that draw on integration of multimedia content and new input devices gain increasing importance in the context of eLearning. The paper emphasizes the addition of digital ink, which is of increasing importance for public (schools, universities) and corporate (trainings, Webinars) teaching. We present a concept for flexibly developing custom ink-aware systems that support augmented presentations for a broad range of use cases and cover not only the core event but also pre- and post-event phases, addressing the needs of both lecturers and students. Our concept for ink-aware multimedia architectures is based on three main system components, which are in turn assisted by small signal processing units. The concept fosters development of clearly and consistently designed ink-aware applications. The paper emphasizes examples where digital ink is visualized atop image-based slides, but potential applications comprise a much broader range of underpinning application. To illustrate our concept and implementation, we present sample customizations i.e. realizations of all relevant component categories. We discuss evaluation results obtained from both interviews with lecturers as well as our experience with using and supporting customizations made by ourselves.

An Open Architecture for Face-to-Face Learning and Its Benefits

We already had the opportunity to present our category-based concept for the support of face-to-face learning during the last symposium. In the meantime, we made further experiences that contributed to the refinement of our concept and given publication. Our last paper served to present the technical basis of our concept for the development of an open architecture and is recommended to be read, since we now present the results and benefits of its application in the classroom. We examine not only the benefits for lecturers and learners, but also provide examples that illustrate our contributions for developers and supporters. The discussion of our results would be assisted by the presentation of features, use-cases and selected results of our continuously performed evaluation. All of them would be used to demonstrate the advantage and the power of our contribution that enabled us to adopt valuable features of other systems, to integrate completely new features and to combine our systems even with external ones

Categorization of educational presentation systems

In this paper, we focus on slide-based presentation systems and present a new categorization schema for educational presentation systems. The schema itself arose from our own experiences and observation of work of other research groups using presentation systems in multimedia enabled classrooms. The basic criteria are illustrated using existing systems and real-world examples. The criteria have been extended and applied to distinguish the intentions of existing presentation systems. Finally, trends in the development of presentation systems were reconsidered in respect to our work.

A uniform way to handle any slide-based presentation: the universal presentation controller

We present a sophisticated approach for handling and processing presentations and multimedia content in the classroom. The main contribution of our work is the way we technically control and display our models for multimedia based presentations: In contrast to existing approaches we avoid converting the file-based representation to a home-brew format which seems to be the easiest way for the processing and appliance of own features. Instead, we present the benefit of our layered solution that creates a model-based representation of any popular slide-based presentation format like PowerPoint and PDF and uses the original presentation systems that run in parallel to our own application, the universal presentation controller. Therefore, we can keep all hot features like integrated audios or videos, animations and slide transitions, notes and even native inking of the original presentation systems, but are also able to add our own extensions in general. We can communicate with other applications and offer them access to our model and core functionality. The models can be modified and extended online, which for example allows the integration of snapshots taken from a webcam.

Bridging media breaks in presence presentations

The integration and fusion of different media input streams into one unique presentation stream is very important for maintaining the live aspect in recordings. The described core component of the Digital Lecture Hall [2] handles these requirements. It also supports annotating any content, as well as database storage for further processing of all collected materials.

An Example for Synchronized Usage of Different Applications in the Classroom

In the given publication an example for synchronized usage of different applications in the classroom is presented. To create a vivid environment for PowerPoint-lead lectures, we combine different interactive displays and force separation of phases of creating new content and augmentation of existing content. We deal with synchronization issues that occur while presented content is stored for later retrieval and content is delivered from different applications. We extend a common presentation environment by a projector and an interactive whiteboard to support a large auditorium. Our setup is economical in terms of development costs. A small application was developed for the interactive whiteboard. The discussion of the presented scenario is based on an evaluation in a class with over 100 computer science students

A Layer-Based Concept for Presentation Systems

Many educational presentation systems have been developed within the last decade and are successfully supporting higher education nowadays. Surprisingly little effort has been made in order to develop concepts on a higher basis than per system and to identify the specific needs for systems of this category. We suggest a layer-based concept for assisting the processing of content supposed to be annotated and presented. Compared to related work, our contribution identifies reoccurring efforts within the development of different systems and presents a very generic and pattern-like solution for their development.

Multiple Presentation Handling for Versatile Presentation Environments

Although a wide range of free and commercial presentation systems such as PowerPoint, Impress or Keynote are available, many research groups develop their individual presentation system for higher education. The paper focuses on the handling of multiple presentation streams within such systems and identifies relevant system features. Our approach for creating versatile presentation environments is presented in detail. It is based on different models that can be hierarchically assigned to each other and represent so-called sessions, presentations, slides and finer structures. For evaluation purposes, different usage scenarios that illustrate parallel handling of presentations are presented and discussed.

Educational presentation systems: a workflow‐oriented survey and technical discussion

Purpose – Within the last few years, a couple of presentation systems have been developed for assisting higher education. This article aims to provides an overview of available systems and highlight differences regarding their individual intention and technical approaches.Design/methodology/approach – The article consists of a comprehensive system and literature review and provides a taxonomy. Famous systems are categorized and discussed including their individual approaches.Findings – The advantages and disadvantages of different approaches are presented. The discussion provides readers also with information relevant for rating systems according their personal needs.Research limitations/implications – The categorization for presentation systems can be extended and applied for the categorization of audience response systems.Practical implications – A source of information that assists users while they choose an appropriate existing presentation system and developers while they design new ones.Originality/...