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Blog

13. April 2018 - 10:30 in Development
#robot

Robotic Arm Tools

During the last years I have developed some tools for my robotic arm. This includes a library to control the motors of the arm and furthermore there are some examples using this library.

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On Using Interactivity to Monitor the Attendance of Students at Learning-Videos

Abstract

Many studies are claiming that compulsory attendance has its benefits for students because it is positively influencing their performance in consequence. This means that fully attending students are receiving a better grade than those who skip parts of the course. Whereas there are existing technologies to monitor the attendance of students in standard classroom situations the possibilities to provide such functionalities at online videos are limited. Because of that this work introduces an approach to assess the performance of students at videos. For that a web-platform which offers a detailed recording of the watched parts of videos is presented. The evaluation shows the performance of the students at a course consisting of videos with compulsory attendance and furthermore it points out that the approach for monitoring the attendance at online videos is basically working.

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09. October 2016 - 18:09 in Publication
#learning

Digitale Medien: Zusammenarbeit in der Bildung

Abstract

Der Begriff „Neue Medien“ ist den Teenagerjahren inzwischen entwachsen. Vieles, was vor 15 Jahren darunter verstanden wurde, ist mittlerweile selbstverständlicher Teil unseres täglichen Arbeits- und Privatlebens. Den digitalen Wandel und seine Dynamik zu beobachten, ihn kritisch zu hinterfragen, aktiv zu gestalten und wissenschaftlich zu begleiten, ist eine zentrale Aufgabe der Gesellschaft für Medien in der Wissenschaft e.V., kurz GMW. Dieser Band versammelt die Beiträge der Jahrestagung 2016 unter dem Titel „Digitale Medien: Zusammenarbeit in der Bildung“. Zentrales Thema sind dabei die Schnittstellen zwischen Institutionen, Lernenden, Lehrenden, wissenschaftlichen Disziplinen und Technologien, wobei insbesondere technologiegestützte Möglichkeiten der Zusammenarbeit in der Gestaltung von Bildungsangeboten betrachtet werden.

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An analysis of the use and effect of questions in interactive learning-videos

Abstract

This study focuses on the positioning of interactive questions within learning videos. It is attempted to show that the position of a question’s occurrence has an impact on the correctness rate of its answer and the learning success. As part of the study, the interactive learning videos in which the questions are placed are used as teaching materials with a class. The pupils have been working with the videos for around one month and some interesting results could be obtained. It is shown that questions which are asked too early in the videos are answered incorrectly more often than other questions. This manuscript also recommends an adequate positioning of the first question in learning videos. The new hypothesis that the length of intervals between popping up questions plays a minor role at rather short learning videos is constructed in this publication. Moreover, the positive impact on the long-term learning success of the participants of learning videos is determined.

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08. July 2016 - 11:30 in RC
#video

Jumping!

Here are some jumps with my new Dromida DT 4.18 BL.

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14. May 2016 - 17:17 in RC
#video

First RC Drive 2016

Today I went to the field for the first time this year. Enjoy the video of the racing T-R5 Turbo.

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On Using Learning Analytics to Track the Activity of Interactive MOOC Videos

Abstract

It is widely known that interaction, as well as communication, are very important parts of successful online courses. These features are considered crucial because they help to improve students’ attention in a very significant way. In this publication, the authors present an innovative application, which adds different forms of interactivity to learning videos within MOOCs such as multiple-choice questions or the possibility to communicate with the teacher. Furthermore, Learning Analytics using exploratory examination and visualizations have been applied to unveil learners’ patterns and behaviors as well as investigate the effectiveness of the application. Based upon the quantitative and qualitative observations, our study determined common practices behind dropping out using videos indicator and suggested enhancements to increase the performance of the application as well as learners’ attention.

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29. March 2016 - 15:48 in General
#Racing #SC #skiing

Ski Challenge 16 is over

A great season of riding and racing on the virtual slopes is over. Here are my results:

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30. October 2015 - 17:40 in Development
#python

Phantom3 .srt Customizer

The DJI Phantom 3 Professional is a quadrocopter with a 4k camera. It can be configured to record flight data in addition to a recorded video. This is done by using subtitles in the .srt format. Each second a block of data is recorded. For example:

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Impacts of Interactions in Learning-Videos: A Subjective and Objective Analysis

Abstract

It is clear that a system known as selective attention is the most crucial resource for human learning (Heinze et al. 1994). Due to this fact a web based information system is developed to support the attention of the watchers of a learning video. This is done by enriching the video with different forms of interactions. Among others there are interactions presenting multiple-choice questions at predefined positions in the video as well as randomly occurring interactions displaying general questions, which are not content related. To gain a basic plan which points out how to distribute the interactions over the video the usage of the information system at a lecture is analyzed. For that on the one hand some feedback of the users is provided and on the other hand an objective analysis of the results of the multiple-choice questions is done by evaluating their time of occurrence in the video.

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