Open Access

Aufbauend auf einer vorherigen Arbeit, die sich mit der Implementierung einer Komponentezum Auslesen mdizinischer Sensordaten mithilfe eines Arduino und eines Raspberry Pi befasst hat, beschäftigt sich diese Arbeit mit der Visualisierung sowie Auswertung der durch das System gesammelten Daten. Das Ziel dieser Arbeit ist es, über einen Zeitraum von etwa drei Monaten mithilfe der Komponente Daten zu sammeln und diese Daten in einem sinnvollen Kontext visuell darzustellen. Zudem sollen diese Daten mithilfe unterschiedlicher Algorithmen des Maschinellen Lernens ausgewertet werden, um mögliche Muster und Zusammenhänge erkennen zu können. In diesem Kontext konnte die Hypothese aufgestellt werden, dass ein Zusammenhang zwischen der Körpertemperatur und der Sauerstoffsättigung im Blut besteht.

Projects in universities challenge the students in terms of organizing the project progress and coordinating team members. In order to cover the content of the courses in more depth and to prepare the students for their future employment the technical university of cologne (Campus Gummersbach) includes various team projects into its curriculum. Procedure models are helpful ways to structure the project tasks and ensure the communication between team members and stakeholders. The course Projectmanagement presents procedure models such as Waterfall Model, V-Model and Scrum that are mostly used in business context and software engineering. An agile procedure model that is not part of the curriculum is called Design Thinking. It is a suitable approach for student projects as it combines the requirement of an open mindset, a creative, experimental working method and an interdisciplinary toolbox. The objective of this thesis is to design a concept for a procedure model that is customized to students' needs. The growing practice of the design thinking method and other agile procedures within the business world, also increases the importance for students to apply of such models in preperation for professional work. To define the requirements for the recommended procedure model, the first step is to elaborate on the processes and challenges that are currently used in student projects. Then the procedure models Waterfall Model, V-Model and Scrum are presented and evaluated taking into account the students' preferences. Next, Design Thinking is presented structured into three parts: mindset, process and toolbox. The most suitable projects to apply this method are identified in the subsequent analysis. Finally, the most appropriate aspects of the presented procedure models as well as the Design Thinking processes are detected, framed and combined into a new procedure model. The new model is illustrated using a graphical representation and a corresponding explanation. It is clustered into the three fundamental project phases: Planning, Execution and Closure. The Planning phase forms the foundation for a well functioning team and successful project progress. Execution is based on the Design Thinking approach and integrates an iteration-loop formed by the subphases Exploration, Idea Generation, Prototyping, Test and Implementation. The final phase Closure is an incentive for a more creative approach to create final presentations. This model can be developed further and be used for example as a didactic instrument and as a link between the diverse disciplines in interdisciplinary projects across different universities. In this way students learn to apply agile procedures and work in interdisciplinary teams.

This thesis proposes four different Augmented Reality (AR) display techniques that can overcome the problem of uncertain tracking errors. Where most other papers focus on limiting the amount of error that a user tracking system generates, this paper pro-poses visualizations that limit their impact instead. For this, four different display techniques have been developed and evaluated using criteria found in related literate. Two of the four proposed solutions consistently ranked better within these criteria. The first, Bending Words, uses a mix between spatially registered information and turn instructions to achieve that result. The second, WIM, mostly relies on context infor-mation of the building instead.

Sensors can monitor physical attributes and record multimodal data in order to provide feedback. The application calligraphy trainer, exploits these affordances in the context of handwriting learning. It records the expert’s handwriting performance to compute an expert model. The application then uses the expert model to provide guidance and feedback to the learners. However, new learners can be overwhelmed by the feedback as handwriting learning is a tedious task. This paper presents the pilot study done with the calligraphy trainer to evaluate the mental effort induced by various types of feedback provided by the application. Ten participants, five in the control group and five in the treatment group, who were Ph.D. students in the technology-enhanced learning domain, took part in the study. The participants used the application to learn three characters from the Devanagari script. The results show higher mental effort in the treatment group when all types of feedback are provided simultaneously. The mental efforts for individual feedback were similar to the control group. In conclusion, the feedback provided by the calligraphy trainer does not impose high mental effort and, therefore, the design considerations of the calligraphy trainer can be insightful for multimodal feedback designers.

Digital competences are describing a set of skills, which are necessary to use digital devices and tools with an adequate degree of self-determination. With the ubiquitous digitization of our lives and our society it is important for every citizen to have digital competences. Therefor, it is necessary to educate those competences in schools. As one cannot assume teachers to have enough digital competences to well educate the children of todays classes, this master thesis tries to find out: How to shape the process of teaching digital competences to adolescents in German schools, focusing on including multiple parties from diverse backgrounds into the process? At first, the current situation of teaching digital competences in German schools is analyzed by means of a literature review. After the identification of the challenges within the German system, international best practices are examined. Therefor, four countries, which have reached high scores in the International Computer and Information Literacy Study are selected. Australia, the Czech Republic, Denmark and the Republic of Korea are compared and possible chances for Germany identified. As the next step, expert interviews with divers parties, which have direct or indirect relation to the German education system, are held. The goal of the interviews is to generate ideas on how to support the education system by external help. At the end of the thesis the recommended approach of Motivating External People is presented. Several measures, such as teaching or mentoring students in a guest lecturer model; providing IT support for the hard- and software of the schools or creating Open Educational Resources as education material for the teachers are presented and possible third parties are named. As it is not possible to support the education system from the outside without education system internal persons, it is presented, what needs to change within the system to get the approach working. Therefor, not a complex and system changing approach is presented, but a combined top-down and bottom-up process to motivate external people to support.