Ontologien gewinnen in der heutigen Zeit zunehmend an Bedeutung. Informationen können effizient durch eine formale, vernetzte Struktur genutzt werden. Die Grundlage bildet ein formales System, das durch eine standardisierte Ontologiesprache definiert ist und zur Beschreibung von Ontologien verwendet wird. In dem Zusammenhang lassen sich Informationen in einem einheitlichen Format darstellen. Ontologien bestehen generell aus Konzepten, die durch Beziehungen miteinander verbunden sind. Ein großer Forschungszweig beschäftigt sich mit der Annotierung dieser Konzepte. Der Vorgang ermöglicht eine einheitliche Beschreibung, indem Ontologiekonzepte explizit zu Objekten der realen Welt zugeordnet werden.

With mobile usage on the rise developers are more than ever faced with the issue of developing for multiple platforms. With Google's introduction of Progressive Web Applications (PWA) it is possible to build app-like web applications that can run on any platform. This study aims to investigate if PWA is mature enough to replace an already developed native iOS application. Specifically it aims to investigate if a PWA can achieve the same functionality and security as a native application, as well as what technologies are needed to do so.  To verify this question an iOS application called iHug developed by a software company called Cloud Enablers was used as a reference point. With this reference a Minimum Viable Product (MVP) copy was developed as a PWA to verify that the functionality could be achieved. This PWA was not intended to replace the existing native application, but instead coexist with it. That means that the PWA must be able to communicate with the original application. In addition an investigation was done to see what measures needed to be taken to achieve security. The results showed that the same functionality was achievable, as was the security. Even though the results are promising, due to the native application not being developed with a PWA in mind there was a lot of extra work that had to be done to replicate certain functionalities and SDK choices. On this basis, while it is certainly possible to achieve the same functionality it is much harder to do so when the counterpart was not developed to be able to communicate with a PWA.

In practical laboratory classes students traditionally receive data by reading from a measurement device (ruler, clock, voltmeter, etc.) or digitally as files in exchange formats such as CSV (comma separated value). In many cases these data have to be processed later using non-linear regression, here referred to as curve fitting. Therefore, analog data first have to be digitalised and imported to a data analysis and visualisation program, which is often commercial and requires installation. In this paper we present an alternative concept fusing open-source community tools into a single page web application facilitating data acquisition, visualisation, analysis via non-linear regression and further post processing usable for error calculations. We demonstrate the e-learning potential of this web application accessible at curvefit.tu-chemnitz.de in the context of acquired data as typically obtained in physical laboratory classes from undergraduate studies. A prototype workflow for the topic 'specific electric resistance determination' is presented along with a technical description of the basic web technology used behind. Restrictions, such as limited portability or cumbersome ways to share results electronically between student and supervisor as occurring in traditional software applications are overcome by enabling export via URL. The discussion is complemented by thorough comparison of curve fitting web applications with focus on their capability to be adaptable to user-specific models (equations) as faced by (undergraduate) students in the context of their education in laboratory classes in natural and life sciences, such as physics, biology and chemistry.

In practical laboratory classes students traditionally receive data by reading from a measurement device (ruler, clock, voltmeter, etc.) or digitally as files in exchange formats such as CSV (comma separated value). In many cases these data have to be processed later using non-linear regression, here referred to as curve fitting. Therefore, analog data first have to be digitalised and imported to a data analysis and visualisation program, which is often commercial and requires installation. In this paper we present an alternative concept fusing open-source community tools into a single page web application facilitating data acquisition, visualisation, analysis via non-linear regression and further post processing usable for error calculations. We demonstrate the e-learning potential of this web application accessible at curvefit.tu-chemnitz.de in the context of acquired data as typically obtained in physical laboratory classes from undergraduate studies. A prototype workflow for the topic 'specific electric resistance determination' is presented along with a technical description of the basic web technology used behind. Restrictions, such as limited portability or cumbersome ways to share results electronically between student and supervisor as occurring in traditional software applications are overcome by enabling export via URL. The discussion is complemented by thorough comparison of curve fitting web applications with focus on their capability to be adaptable to user-specific models (equations) as faced by (undergraduate) students in the context of their education in laboratory classes in natural and life sciences, such as physics, biology and chemistry.

There is a increasing number of enrolled students in higher education, which leads toless personal time with the teachers, and therefore supplementary technologies needs to takeplace. This paper investigate how Testbased learning with feedback affects the learningoutcomes in a group of students, by measuring their perceived value. The research also investigateswhat design principles to follow, when working with E-learning and Testbasedlearning with feedback. For this this research an IT-artefact will be created which the studentwill be able to use as a practice tool. With the IT-artefact they will be able to answera number of question, in a subject, and get personalized feedback depending on their score.The quantitative research will then evaluate whether the students perceived thoughts aboutthe IT-artifact and the learning method itself. The result shows eight design principles onhow to design an E-learning tool where student should learn through Test based learningwith feedback. The result also indicates that the perceived feeling of learning is good eventhough a big number of respondents never participated in the survey. / Antalet studenter på Universiteten växer ständigt. Detta leder till minskad relationmed lärare och för att upprätthålla kvalite behövs andra lösningar. En sådan lösning äre-läromedel som bygger på testbaserat lärande med feedback. Arbetet undersöker vilka designprincipersom ska följas när man utvecklar ett E-lärmomedel med testbaserat lärandeoch feedback. För undersökningen kommer en IT-artefakt att skapas där studenter kan testasina kunskaper på ett ämne för lärande syfte. De besvarar ett antal frågor, och beroende påderas resultat får de tillbaka personlig feedback. Den kvantitativa undersökningen kommersedan att analysera studenternas uppfattning av IT-artefakten som hjälpmedel. Resultatetbeskriver åtta olika designprinciper för hur man ska designa ett E-läroverktyg där studenterska kunna testa sina kunskaper. Resultatet tillsammans med tidigare forskning tyder ävenpå en uppfattad känsla av ökad inlärning.