Schlagwort: publication

Veröffentlicht am

[review] Tweet, Tweet , Retweet: Conversational Aspects of Retweeting on Twitter

Danah Boyd, Scott Golder und Gilad Lotan sind der Frage nachgegangen, wie Personen sogenannte Retweets auf Twitter verwenden. Also warum dupliziert jemand auf Twitter eine Nachricht und welche Form hat diese dann. Der Artikel selbst erscheint erst in den Proceedings of HICSS-43 im Jänner 2010, trotzdem findet man ein PrePrint Version vorab im Netz:

Tweet, Tweet, Retweet: Conversational Aspects of Retweeting on Twitter

Nun neben einer relative großen Datenanalyse von von fast 720.000 tweets (erste Studie) und 203.371 tweets (zweite Studie) erfolgte auch eine Kurzumfrage. Die wesentlichsten Aussagen sind m. E.:

  • 36% der tweet waren ein reply (@), 5% der tweets hatten einen hashtag (#), 22% der tweets enhielten eine URL und 3% der tweets waren ein retweet (wobei 88% ein RT inkludierten und nur 11% „via“)
  • 52% der retweets enthielten eine URL und 18% einen hastag (#)

Es wird auch aufgezeigt, dass es verschiedene Arten von Retweets gibt und dass sich hier noch keine wirkliche Norm eingebürgt hat. Genauso sehen es die Autoren bei der Analyse warum jemand etwas retweetet. Es werden hier etliche Gründe angeführt:

  • um den Inhalt eines Tweets weiter zu verbreiten und seinen eigenen Followern mitzuteilen
  • um den Originaltweet zu kommentieren und damit eine Diskussion anzuregen
  • um jemanden seiner Community sichtbarer zu machen
  • um jemanden zuzustimmen
  • als eine Art freundschaftliche Geste
  • um eigene Followers zu gewinnen
  • um den Tweet bei sich abzulegen

Auch bei der Frage was denn retweetet wird, kann aufgezeigt werden, dass es primär dann erfolgt wenn man glaubt, dass es für seine Community relevant bzw. wichtig ist – oder aus einer sozialen Aktion heraus. Die Autoren verweisen zum Schluss auch noch auf die Gefahr, dass durch die Beschränkheit der Zeichenanzahl es durchaus zu einer Sinnveränderung des Original Tweets kommen kann und auf weitere Effekte wie die Bitte nach einem Retweet oder ein Ego-Retweet (Retweet eines Tweets in dem man selbst schon vorkommt).
Alles in allem kann, fasst dieser Artikel das Phänomen Retweet auf Twitter sehr gut zusammen und ich kann ihn allen jenen weiterempfehlen, die sich damit näher beschäftigen. Für einen erfahrenen Twitterexperten verbirgt sich eigentlich wenig Neues, zeigt also die gelebte alltägliche Praxis auf.

(via heise.de)

Veröffentlicht am

[publication] Interactive Technology for Enhancing Distributed Learning: A Study on Weblogs

Our contribution to this year HCI 2009 conference about „Interactive Technology for Enhancing Distributed Learning: A Study on Weblogs“ is now online available.
Abstract:

In this study, it was investigated whether, and to what extent, Web 2.0 technologies, actually Weblogs, can be a suitable instrument for enhancing the practice of distributed learning. In educational settings, which are based on traditional lectures many students begin serious study shortly before the exam. However, from previous empirical research, it is known that the practice of distributed learning is much more conducive to retaining knowledge than that of massed learning. A 2*2 factorial design (within – repeated measures) with pre-test and post-test in a real life setting was applied; the study lasted for the whole summer term 2007. Participants were N=28 computer science undergraduates of Graz University of Technology. We randomly assigned them to two groups of equal size: The experimental group given the Weblog treatment are referred to as Group W; whereas the control group with no access are referred to as Group C. Students of group W were instructed to use the Weblog for developing their paper and studying during the lecture and they were requested not to reveal their group affiliation. The results showed that performance scores of group W were significantly higher than that of group C. This demonstrates that Weblogs can be an appropriate instrument to supplement a classical lecture in order to enable deeper processing of information over a longer period of time, consequently resulting in enhanced learning performance.

Reference: Holzinger, A.; Kickmeier-Rust, M.; Ebner, M. (2009) Interactive Technology for Enhancing Distributed Learning: A Study on Weblogs, Proceedings of HCI 2009 The 23nd British HCI Group Annual Conference, Cambridge, London, pp. 309-312

The PrePrint is available here.

Veröffentlicht am

[review] Mobile Learning 2.0

Anja hat heute Ihren Artikel für das e-Learning Journal mit dem Thema „Mobile Learning 2.0“ als Postprint Version am Weblog veröffentlicht. Sehr gut, denn damit kommt sie gleich ihrer eigenen Forderung nach Open Content im Web nach.
Nachdem wir ja auch in diesem Bereich forschen, musste ich diesen Artikel lesen und war gespannt was hier auf mich zukommt. Gleich vorweg – es hat Spaß gemacht zu lesen und ich kann ihn generell für Interessierte nur weiterempfehlen. Wenn man mich jetzt spontan fragen würde, was ist die Aussage für mich aus dem Artikel, was habe ich mir abgespeichert, dann wohl die Aussage, dass wir mobile Devices als Verbindung zwischen der Online und Offline Welt begreifen müssen. Eine Erweiterung unserer digitalten Aktivitäten die wir an beliebigen Orten weiterführen und unseren primären sozialen Bedürfnissen nachkommen. Das dies auch immense Auswirkungen auf das Lernverhalten haben wird, brauche ich glaub ich nicht zu betonen.
Also Anja – danke einerseits für die zur Verfügungstellung, andererseits für die tolle Aufbereitung und die durchdachte Argumentation.
Und hier für alle die verzweifelt jetzt nach dem Text suchen:

Veröffentlicht am

[publication] How Web 2.0 Enhance Knowledge Construction in Civil Engineering

Our research article about the use of Web 2.0 technologies in Civil Engineering Education „How Web 2.0 Enhance Knowledge Construction in Civil Engineering“ has been published.
Abstract:

At Graz University of Technology (TU Graz) lots of experience using multimedia or internet based applications in higher education has been gathered. Especially in the field of civil engineering we can refer to a seven year long practical employment. During the very first e-Learning boom at universities in Austria in 2001 some projects in the field of civil engineering have been started in order to investigate the possibilities of web-based education. Nowadays a radical change of the Web, often called Web 2.0, offers possibilities, which can change the e-Education dramatically. The use of Wikis and Weblogs lead to a more collaborative teaching and learning process. Podcasts, in the same way as web based software helps to support the learner of today in a much more efficient way as in the years before.
This paper will discuss how modern technologies can be used in the field of Civil Engineering Education and will show a lot of practical examples of today’s effort in this field at TU Graz. The authors conclude that e-Education will play a very important role in the future of higher education. Bearing in mind that learners of today are the working society of tomorrow this change leads to arbitrarily new situations. Has industry to prepare for a new kind of generation?

Reference: Ebner, M. (2009) How Web 2.0 Enhance Knowledge Construction in Civil Engineering, A. Starcic and M. Kovac (ed.), University & Industry – Knowledge Transfer and Innovation, WSEAS Press, Athen, 2009, p. 77-101

Here you will get the Draftversion.

Veröffentlicht am

[publication] Emotion Detection: Application of the Valence Arousal Space for Rapid Biological Usability Testing to enhance Universal Access

A Draftversion of our publication „Emotion Detection: Application of the Valence Arousal Space for Rapid Biological Usability Testing to enhance Universal Access“ at this year HCII Conference is now online available.
Abstract:

Emotion is an important mental and physiological state, influencing cognition, perception, learning, communication, decision making, etc. It is considered as a definitive important aspect of user experience (UX), although at least well developed and most of all lacking experimental evidence. This paper deals with an application for emotion detection in usability testing of software.
It describes the approach to utilize the valence arousal space for emotion modeling in a formal experiment. Our study revealed correlations between low performance and negative emotional states. Reliable emotion detection in usability tests will help to prevent negative emotions and attitudes iproducts. This can be a great advantage to enhance Universal Access.

Reference: Stickel, C.; Ebner, M.; Steinbach-Nordmann, S.; Searle, G.; Holzinger, A. (2009) Emotion Detection: Application of the Valence Arousal Space for Rapid Biological Usability Testing to enhance Universal Access. – in: Springer Lecture Notes in Computer Science. (2009) In Press
Here you will find the Draftversion and here the slides.

Veröffentlicht am

[publication] A Study on the Compatibility of Ubiquitous Learning (u-Learning) Systems at University Level

A Draftversion of our publication „A Study on the Compatibility of Ubiquitous Learning (u-Learning) Systems at University Level“ at this year HCII Conference is now online available.
Abstract:

Graz University of Technology has a long tradition in the design, development and research of university wide Learning Management Systems
(LMS). Inspired by the iPhone Style, the available system has now been extended by the addition of a mobile viewer, which grants the student mobile accessibility to all available online content. In this paper, we report on the lessons learned within a study on user experience with this specially designed LMS mobile viewer. The User Experience (UX) was measured by application of a 26 item questionnaire including the six factors Attractiveness, Perspicuity, Efficiency, Dependability, Stimulation and Novelty, according to Laugwitz et al. (2008). The results showed high rates of acceptance, although the novelty of our approach received a surprisingly low rating amongst the novice end users.

Reference: Ebner, M.; Stickel, C.; Scerbakov, N.; Holzinger, A. (2009) A Study on the Compatibility of Ubiquitous Learning (u-Learning) Systems at University Level . – in: Springer Lecture Notes in Computer Science. (2009), S. 34 – 43
Here you will find the Draftversion and here the slides.

Veröffentlicht am

[publication] Mixing Content and Endless Collaboration – MashUps: Towards Future Personal Learning Environments

A Draftversion of our publication „Mixing Content and Endless Collaboration – MashUps: Towards Future Personal Learning Environments“ at this year HCII Conference is now online available.
Abstract:

The recent movement by major Web services towards making many application programming interfaces (APIs) available for public use has led to the development of the new MashUp technology, a method of merging content, services and applications from multiple web sites. The new technology is now being successfully applied in the academic community to enrich and improve learning and teaching applications. This paper examines its implementation and use, discusses methods and styles of usage and highlights the advantages and
disadvantages of client and server application, based on related work and recent experiences gathered with a large university-wide open learning management system (WBT-Master/TeachCenter of Graz allows lecturers to use diverse web resources.

Reference: Auinger, A.; Ebner, M.; Dietmar, N.; Holzinger, A. (2009)
Mixing Content and Endless Collaboration – MashUps: Towards Future Personal Learning Environments. – in: Springer Lecture Notes in Computer Science. (2009) In Press
Here you will find the Draftversion and here the slides.

Veröffentlicht am

[publication] Intuitive E-Teaching by Using Combined HCI Devices: Experiences with Wiimote Applications

A Draftversion of our publication „Intuitive E-Teaching by Using Combined HCI Devices: Experiences with Wiimote Applications“ at this year HCII Conference is now online available.
Abstract:

The wide availability of game based technologies and sophisticated e-Learning possibilities creates new demands and challenges on Human–Computer Interaction and Usability Engineering (HCI&UE). Solid research in HCI must support improvement in learning ability and creativity for both teachers and students. According to recent market surveys the Wii remote controller or Wiimote is currently more wide spread than standard Tablet PCs and is the most used computer input device worldwide. As a collection of many sensors, also including Bluetooth technology, accelerometers and IR sensors, Wiimote is of great interest for HCI experiments, especially in the area of e-Learning and e-Teaching. In this paper, we present results gained from the investigation of the potential of Wiimote as both a standard input device – such as mouse or presenter – and as a gesture and finger tracking sensor. We demonstrate, on the basis of examples from e-Teaching, how easily everyday gestures can be interpreted in regular computer applicationhardware modules and some additional software modules.

Reference: Holzinger, A.; Softic, S.; Stickel, C.; Ebner, M.; Debevc, M. (2009) Intuitive E-Teaching by Using Combined HCI Devices: Experiences with Wiimote Applications. – in: Springer Lecture Notes in Computer Science (LNCS 5616). (2009), S. 44 – 52
Here you will find the Draftversion.

Veröffentlicht am

[paper accepted] Science 2.0 at ECTEL 09 and MindTrek 09

We are very happy that we can announce that two papers of us were accepted.

  1. Workshop on Science 2.0 for TEL at ECTEL 2009 our submission about „Social networking in scientific conferences – Twitter as tool for strengthen a scientific community“ passed the review process:

    thanks again for your submission to the TelSci2.0 workshop.
    CONGRATULATIONS: we are happy to accept your submission!

  2. MindTrek 2009 Conference – the submitted paper about „The Benefits of Geo-Tagging and Microblogging in m-Learning: a Use Case“ fits the requirements:

    we are very happy to inform you that your paper, titled „The Benefits of Geo-Tagging and Microblogging in m-Learning: a Use Case“ has been accepted for being presented during the MindTrek 2009 Conference

So we are looking forward to great conferences and enjoy meeting as many people as possible to discuss our results.

Veröffentlicht am

[presentation] Emotion Detection: Application of the Valence Arousal Space for Rapid Biological Usability Testing to Enhance Universal Access

Our presentation of our publication „Emotion Detection: Application of the Valence Arousal Space for Rapid Biological Usability Testing to Enhance Universal Access“ at this year HCI International 2009 Conference is now online available:

Klicken Sie auf den unteren Button, um den Inhalt von prezi.com zu laden.

Inhalt laden