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[publication] The XAOS Metric – Understanding Visual Complexity as measure of usability

Our publication about “The XAOS Metric – Understanding Visual Complexity as measure of usability” held at the 6th Symposium (USAB 2010) of the Workgroup HCI&UE of the Austrian Computer Society in Carinthia (Southern Austria). The slides are already available here.

Abstract:

The visual complexity of an interface is a crucial factor for usability, since it influences the cognitive load and forms expectations about the subjacent software or system. In this paper we propose a novel method that uses entropy, structure and functions, to calculate the visual complexity of a website. Our method is evaluated against a well known approach of using the file size of color jpeg images for determining visual complexity. Both methods were applied on a dataset consisting of images of 30 different websites. These websites were also evaluated with a web survey. We found a strong correlation for both methods on subjective ratings of visual complexity and structure. This suggests both methods to be reliable for determination of visual complexity.



Reference:Stickel, C.; Ebner, M.; Holzinger, A. (2010) The XAOS Metric: Understanding Visual Complexity as measure of usability. Springer Lecture Notes in Computer Science LNCS 6389. – in: Human-Computer Interaction in Work & Learning, Life & Leisure, Lecture Notes in Computer Science LNCS 6389., pp. 278 – 290

[sem1p] Präsentation über Präsentation

Beim 6. und letzten Online Meeting des Seminars “eModeration” haben wir über allgemeine Präsentationsregeln geredet. Die Slides sind nun online.
Damit ist die Online Phase auch beendet und wir freuen uns auf die abschließende Präsenzveranstaltung. Zusammenfassend sei festgehalten, dass es wie immer sehr schwer war in den Online Meetings die technischen Hürden zu meistern, aber wir denken es ist nach einiger Eingewohnung gut gelaufen.

Bisherige Unterlagen:

[publication] A Simple MVC Framework for Widget Development

Our publication on ”A Simple MVC Framework for Widget Development” for this year ECTEL-Conference is now online. Slides have been already published here.
Abstract:

The great advantage of a Rich Internet Application (RIA) is the improved performance, since a great part of the processing can be done on the client-side rather than the server-side. For many web-based RIAs JavaScript (JS) is the most common programming language as it is popular as a script language for browsers. While server-side programming languages have the advantages of object oriented programming paradigm, JS bases on objects with a specific object literal notation. Using design architectures such as Model View Controller (MVC) in JS reduces the code complexity and allows semi-parallel application development. It causes an easier and much less time-consuming development on further extensions of RIAs. Web-based widgets are actually RIAs. In this paper a very simple design pattern for widget development is introduced that bases on MVC design architecture. The pattern has been applied during the development phase of widgets for the Personal Learning Environment (PLE) at Graz University of Technology (TU Graz) and
is mostly appropriate for students and RIA developers who have beginner knowledge/experience in JS programming.


Reference: Taraghi, B.; Ebner, M. (2010) A Simple MVC Framework for Widget Development. – in: Proceedings of the 3rd Workshop on Mashup Personal Learning Environments (MUPPLE10), S. 1 – 8

[podcast] E-Books at TU Graz

The talk of Walther at this year EADIM conference about “E-Books at TU Graz” is now online available. The slides have already been published here.

[presentation] The XAOS metric – Understanding Visual Complexity as measure of Usability

The slides of our talk on “The XAOS metric – Understanding Visual Complexity as measure of Usability” at the 6th Symposium (USAB 2010) of the Workgroup HCI&UE of the Austrian Computer Society in Carinthia (Southern Austria) are now online available:

[presentation] E-Books at TU Graz

Our today’s presentation on e-Books development at this year EADIM conference is now online available:

[video] Workshop on iPhone/iPad Human Interface Design

We did a short video about our workshop on “iPhone/iPad Human Interface Design” held at the 6th Symposium (USAB 2010) of the Workgroup HCI&UE of the Austrian Computer Society in Carinthia (Southern Austria). The slides are already available here.

[sem1p] Projektarbeit eModeration

Im Projektseminar “E-Moderation” sollen kurze Filme bzw. Slidescasts zu Themen aus dem Feld von E-Kommunikation und E-Moderation entstehen. Vier Teams arbeiten zu spannenden Themen. Beim heutigen Präsenztermin geht die Arbeit am Drehbuch los.



Bisherige Unterlagen:

[workshop] iPhone/iPad Human Interface Design

Our workshop on “iPhone/iPad Human Interface Design” held at the 6th Symposium (USAB 2010) of the Workgroup HCI&UE of the Austrian Computer Society in Carinthia (Southern Austria) is now online available.
First of all you will find the slides for the workshop design, afterwards the two presentations for the theoretical input:

[publication] @twitter Try out #Grabeeter to Export, Archive and Search Your Tweets

Our publication on “@twitter Try out #Grabeeter to Export, Archive and Search Your Tweets” for this year Research 2.0 Workshop at ECTEL Conference is now online available. The slides you will find here.
Abstract:

The microblogging platform Twitter is beside Facebook the fastest growing social networking application of the last years. It is used in different ways, e.g. to enhance events (conferences) by sending updates, hyperlinks or other data as a news-stream to a broader public. Until now the stream ends with the end of the event. In this publication a new application is introduced that allows information retrieval and knowledge discovery by searching through local stored tweets related to a corresponding event. The architecture of the prototype is described as well as how the data is being accessed by a web application and a local client. It can be stated that making tweets available after the end of an event, enhances the way we deal with information in future.

Reference: Mühlburger, H.; Ebner, M.; Taraghi, B., (2010) @twitter Try out #Grabeeter to Export, Archive and Search Your Tweets. – in: Research 2.0 approaches to TEL. (2010), S. 76 – 85, Workshop Proceeding, ECTEL 2010, [Link]