| 1. |
- Dinnus, Christian, et al.
(författare)
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IT-Organisationen wirksam verändern : Innovative KVP-Praxis: Mit kleinen Schritten zu nachhaltigem Erfolg
- 2013
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Bok (refereegranskat)abstract
- In jedem Unternehmen gibt es Stellen, an denen es nicht rund läuft. In manchen Organisationseinheiten ist Sand im Getriebe, es knirscht und knackt – schon bereits bei der Zusammenarbeit mit anderen Abteilungen. Was kann man tun? Eine Möglichkeit besteht darin, ein großes Veränderungsprojekt aufzusetzen und alle Mitarbeiter und Führungskräfte ins kalte Wasser zu werfen. Doch viele dieser großen Veränderungsprojekte scheitern. Hauptgrund ist, dass Führungskräfte von der Notwendigkeit der Änderungen nicht überzeugt sind. Die Autoren dieses Buchs haben daher einen anderen Ansatz entwickelt: Veränderung ja, aber in kleinen, nachhaltigen Schritten. In einem solchen kontinuierlichen Veränderungsprozess geht es darum, nach und nach stabil laufende Prozesse einzuführen bzw. bestehende Prozesse zu optimieren. Mit dieser Methode wird die Akzeptanz der Mitarbeiter erreicht. Sie bietet Führungskräften die Möglichkeit, Veränderungen und Prozesse mitzugestalten und sich im Rahmen ihrer Linienverantwortung gezielt einzubringen.
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| 2. |
- Eberwein, Jan, et al.
(författare)
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Evaluation der Akzeptanz mobiler Lernszenarien auf Basis plattformunabhängiger Webtechnologien.
- 2014
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Ingår i: Proceedings der 12ten e-Learning Fachtagung der Informatik (DeLFI 2014). ; , s. 213-220
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Konferensbidrag (refereegranskat)abstract
- In den letzten Jahren nahm die Nutzung mobiler Geräte stark zu, wasauch zu einer Verbreitung mobiler Geräte in mobilen Lernszenarien geführt hat.Aufgrund der Heterogenität der am Markt befindlichen mobilen Geräte wird zurSoftwareentwicklung häufig ein plattformunabhängiger Ansatz gewählt. Hierzugibt es im Wesentlichen zwei unterschiedliche Ansätze, die beide aufWebtechnologien basieren. Entweder es werden Applikationen mit spezifischen UIFrameworks für mobile Geräte oder mit responsive Ansätzen, parallel für mobileund stationäre Geräte, entwickelt. Um beide Ansätze vergleichen zu können, stelltdieses Papier eine Evaluation der Akzeptanz mobiler Lernszenarien auf Basisplattformunabhängiger Webtechnologien dar.
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| 3. |
- Giemza, Adam, et al.
(författare)
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A flexible unified architecture to support heterogeneous multi-device learning environments
- 2013
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Ingår i: International Journal of Mobile Learning and Organisation. - : Insiderscience. - 1746-725X .- 1746-7268. ; 7:3/4, s. 210-223
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Tidskriftsartikel (refereegranskat)abstract
- Since the personal ownership of mobile devices has increased steadily over the last decade, many students own personal mobile devices that can reasonably be integrated into mobile learning scenarios. Besides all the benefits this option brings, there are also drawbacks, such as the heterogeneity of the set of mobile devices that need to be managed and integrated into existing and emerging learning scenarios. In our approach, one key element to address this challenge is an architecture that allows an easy and flexible integration of mobile and non-mobile devices into the same (mobile) learning scenario. We used a well-known group discussion method and an existing tool and extended it based on our approach. A description of this extension is presented in this paper. Finally, the paper reports on a pilot study in which the extended system was evaluated.
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| 4. |
- Giemza, Adam, et al.
(författare)
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Integrating Cloud Services to Support the Formation of Informal Learning Groups
- 2013
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Ingår i: Proceedings of the 5th International Conference on Computer Supported Education. - : INSTICC Press. ; , s. 759-765
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Konferensbidrag (refereegranskat)abstract
- CloudServices like Google Drive, Brainstormer, Doodle are meanwhile frequently used as tools for learning in various contexts. They provide storage facilities, production tools and particularly also coordination support. The management of these heterogeneous tools is a challenge for the individual users as well as for the usage in groups. This paper presents a mobile application to support the learners in the formation of informallearninggroups and integrates heterogeneous cloudservices to supportgroupformation and further group work in a campus environment. Furthermore, this paper tackles the ambiguity of the term cloud application and tries to provide a definition and discusses the process of bringing the Brainstormer Web application into the cloud for integration with the mobile application.
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| 5. |
- Jansen, Marc, 1976-, et al.
(författare)
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A Complementary View for Better Understanding the Term Computational Thinking
- 2018
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Ingår i: Proceedings of the International Conference on Computational Thinking Education 2018. - Hong Kong : The Education University of Hong Kong. - 9789887703457 ; , s. 2-7
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Konferensbidrag (refereegranskat)abstract
- The term Computational Thinking is closely related to efforts connected to teach a systematic and well-structured way of problem solving that includes a set of tools and techniques used in Computer Science. While substantial research in this field has shown promising outcomes concerning distinct intervention programs and teaching initiatives, the term Computational Thinking itself requires to be revised in order to get a wider consensus about its meaning and purpose. This paper contributes to the ongoing quest concerning the definition of the term by starting with a fundamental perspective on computational theory and corresponding concepts in order to describe the theoretical building blocks of a systematic view to further elaborate on an approach for teaching and learning about Computational Thinking. Additionally, based on this foundational effort, more advanced concepts are presented and discussed in order to better understand this domain. Finally, the paper identifies and discusses a set of relevant challenges taking a cognitive psychology perspective on Computational Thinking.
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| 6. |
- Jansen, Marc, 1976-, et al.
(författare)
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About the Development of Scenarios for Mobile Web Service Provisioning
- 2013
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Ingår i: 2013 World Congress on Computer and Information Technology (WCCIT). - : IEEE Press. - 9781479904600 ; , s. 1-6
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Konferensbidrag (refereegranskat)abstract
- Web Services are today a well-accepted technology. Especially in the area of Cloud Computing, Web Services usually provide one of the building blocks of the used technology. Another driving technology nowadays are mobile devices. Nevertheless, there is not much research conducted yet in bringing these two important technologies together, e.g. with respect to providing Web Services on mobile devices. While there is already some technology that allows to deploy Web Services directly on mobile devices, it seems that there is still a lack of research about use-cases and/or scenarios that benefit from mobile Web Services. Therefore, this paper presents an approach that allows the evaluation of both, the technology for providing Web Service on mobile devices and mobile Web Services themselves.
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| 7. |
- Jansen, Marc, 1976-
(författare)
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About the Necessity to Change the Perspective for Mobile Web Services
- 2013
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Ingår i: Proceedings of the 15th IEEE International Symposium on Web Systems Evolution (WSE), 2013. - : IEEE Press. - 9781479916085 ; , s. 25-29
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Konferensbidrag (refereegranskat)abstract
- The use of Web Services in modern software development is widely accepted and provides (integrated in an according architecture) a fast, flexible and scalable way for the implementation of modern software products. On the other hand, the development of mobile applications, so called apps, becomes more and more important. While using Web Services also from mobile devices is an already accepted scheme in the development of mobile apps, there is not much work done yet for providing Web Services on mobile devices. Therefore, this paper presents a new perspective to Web Services that could be run on mobile devices and, by this, become mobile Web Services.
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| 8. |
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| 9. |
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| 10. |
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| 11. |
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| 12. |
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| 13. |
- Jansen, Marc, 1976-, et al.
(författare)
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Implementation of Asynchronous Mobile Web Services : Implementation and First Usage
- 2014
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Ingår i: Proceedings of the 4th International Conference on Cloud Computing and Services Science, 2014. - : SciTePress. - 9789897580192
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Konferensbidrag (refereegranskat)abstract
- Mobile devices are nowadays used almost ubiquitously by a large number of users. 2013 was the first year in which the number of sold mobile devices (tablet computers and mobile phones) outperformed the number of PCs' sold. And this trend seems to be continuing in the coming years. Additionally, the scenarios in which these kinds of devices are used, grow almost day by day. Another trend in modern landscapes is the idea of Cloud Computing, that basically allows for a very flexible provision of computational services to customers. Yet, these two trends are not well connected. Of course there exists already quite a large amount of mobile applications (apps) that utilize Cloud Computing based services. The other way round, that mobile devices provide one of the building blocks for the provision of Cloud Computing based services is not well established yet. Therefore, this paper concentrates on an extension of a technology that allows to provide standardized Web Services, as one of the building blocks for Cloud Computing, on mobile devices. The extension hereby consists of a new approach that now also allows to provide asynchronous Web Services on mobile devices, in contrast to synchronous ones. Additionally, this paper also illustrates how the described technology was already used in an app provided by a business partner.
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| 14. |
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| 15. |
- Jansen, Marc, 1976-, et al.
(författare)
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Provision of Personalized Data via Mobile Web Services in eHealth Scenarios
- 2014
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Ingår i: Proceedings of the 10th International Conference on Web Information Systems and Technology. - : SciTePress. ; , s. 441-446
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Konferensbidrag (refereegranskat)abstract
- In societies where the demographic change leads to a more and more unbalanced state between the elderly and all other different age groups, there, health management becomes one of the most significant problems, e.g., in order to allow what is often called successful aging. Ubiquitous use of smart mobile devices enables gathering of personalized data enriched with contextual information. This information can ideally be used in modern eHealth scenarios, resulting in mobile health (mHealth) scenarios. This paper describes how highly personalized and sensitive information, such as vital signs enriched with contextual information of a patient, can be stored at mobile devices and provided via modern web technologies for later-on analysis and health monitoring. Therefore, this paper presents a number of different scenarios in which such mobile technology provides certain benefits, discusses benefits, drawbacks and challenges of such an approach and describes an example implementation of an mHealth scenario.
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| 16. |
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| 17. |
- Jansen, Marc, 1976-, et al.
(författare)
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The TACTIDE EU STEM project : TeAching Computational Thinking with Digital dEvices
- 2022
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Ingår i: Proceedings of Sixth APSCE International Conference on Computational Thinking and STEM Education 2022. - Netherlands : TU Delft OPEN Publishing. - 9789463665636
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Konferensbidrag (refereegranskat)abstract
- One major challenge the educational community is facing relates to how to effectively integrate computational thinking (CT) concepts and ideas into a particular school curriculum. Acquiring CT-skills by means of STEM offers rich opportunities within students ́ education which may lead to learning gains. Previous research has shown that, to maximize the appeal and potential of CT learning environments, a precondition must be set first. The materials used must invite problem-based, inquiry-based and self-discovery learning, must be used without creating misconceptions and, above all, must give students the opportunity to acquire knowledge that can be directly transferred to everyday practice in an accessible manner. All the above puts demands on teachers who carry out learning and teaching in these environments. The EU funded TACTIDE project has tried to incorporate relevant curricular components into a coherent task, implementing assignments and challenges across different subjects and curricula of three different European countries. Based on the analysis of each national curricula, common topics have been identified and sub-scenarios have been developed. These sub-scenarios have been conceived to promote the integration between the topics mediated by CT. To achieve this objective, a greenhouse scenario has been conceptualized and designed towards teaching CT, by the use of microcontrollers such as the BBC micro :b it and the Calliope Mini, as an overarching STEM-topic. Using available sub-scenarios, a Moodle-course for teachers was developed for daily school activities to which other subjects in the core curriculum were interconnected in order to integrate CT skills and abilities. Scalability across different school levels and heterogeneous groups of learners, especially focusing prior knowledge, have been considered important design elements.
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| 18. |
- Jansen, Marc, 1976-, et al.
(författare)
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Using Cloud Services to Develop Learning Scenarios from a Software Engineering Perspective
- 2013
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Ingår i: Journal of universal computer science (Online). - 0948-695X .- 0948-6968. ; 19:14, s. 2017-2053
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Tidskriftsartikel (refereegranskat)abstract
- The term "Cloud Computing" does not primarily specify new types of core technologies but rather addresses features to do with integration, inter-operability and accessibility. Although not new, virtualization and automation are core features that characterize Cloud Computing. In this paper, we intend to explore the possibility of integrating cloud services with educational scenarios without re-defining neither the technology nor the usage scenarios from scratch. Our suggestion is based on certain solutions that have already been implemented and tested for specific cases.
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| 19. |
- Kohen-Vacs, Dan, 1969-, et al.
(författare)
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Towards an architectural approach to supporting collaborative seamless learning experiences
- 2019
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Ingår i: Seamless Learning. - Singapore : Springer. - 9789811330704 - 9789811330711 ; , s. 91-110
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Bokkapitel (refereegranskat)abstract
- In recent years, educational practitioners and learning technologists have been designing, developing and deploying a wide range of innovative environments to enhance meaningful, seamless and exciting learning experiences. In these learning environments, students may interact as individuals or in groups across several learning spaces, while utilizing various technologies that support different contexts of use. However, despite these efforts and progress in this field, there are still a number of technical challenges associated with software architecture issues related to how to implement tools that support seamless learning. In this chapter, we describe our ongoing research related to the design, development and deployment of different software solutions to support seamless learning activities across a variety of settings. Here, we examine and propose a candidate software architecture that is inspired by our implementation of seamless learning activities. In particular, we direct our efforts towards enhancing and facilitating these activities by supporting the reuse and remixing of digital content generated by learners and teachers. The features of the proposed architecture also support the reusability and interoperability of software components and micro-services for different interactions. We address architectural challenges identified in activities we have carried out during the last five years. Three different use cases of seamless learning activities in different subject areas are analysed and the supporting technical and software solutions examined, in order to identify and extract the salient features and functional requirements of the proposed architecture. In addition, we use these cases to examine, analyse and propose new and refined ways to cope with challenges related to the activities that need to be implemented for seamless learning flow. We present and discuss our results describing an architecture capable of supporting meaningful, appealing and seamless learning experiences that are independent of subject matter, context of use and supporting technological solutions. © 2019, Springer Nature Singapore Pte Ltd.
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| 20. |
- Kohen-Vacs, Dan, 1969-, et al.
(författare)
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Towards an architecture for educational virtual reality spaces
- 2016
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Ingår i: ICCE 2016 - Proceedings of the 24th International Conference on Computers in Education. - : Asia-Pacific Society for Computers in Education. - 9789868473577 ; , s. 368-373
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Konferensbidrag (refereegranskat)abstract
- In recent years, hardware for the production and consumption of virtual reality content has reached level of prices that make it affordable to everyone. Accordingly, schools and universities are showing increased interest in implementations of virtual reality technologies for supporting their innovative educational activities. Hence, this paper presents a flexible architecture for supporting the development of virtual reality learning scenarios conveniently deployed for educational purposes. We also suggest an example of such educational scenario for medical purposes deployable with the suggested architecture. In addition, we developed and used a questionnaire answered by 17 medical students in order to derive additional requirements for refining such scenarios. Then, we present these efforts while aiming at deployments usable also for additional domains. Finally, we summarize and mention aspects we will address in our coming efforts while deploying such activities.
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| 21. |
- Lincke, Alisa, 1989-, et al.
(författare)
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Correlating Working Memory Capacity with Learners´ Study Behavior in a Web-Based Learning Platform
- 2019
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Ingår i: Proceedings of the 27th International Conference on Computers in Education Conference Proceedings. - : Asia-Pacific Society for Computers in Education. - 9789869721448 - 9789869721431 ; , s. 90-92
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Konferensbidrag (refereegranskat)abstract
- Cognitive pre-requisites should be taken into consideration when providing personalized and adaptive digital content in web-based learning platforms. In order to achieve this it should be possible to extract these cognitive characteristics based on students´ study behavior. Working memory capacity (WMC) is one of the cognitive characteristics that affect students’ performance and their academic achievements. However, traditional approaches to measuring WMC are cognitively demanding and time consuming. In order to simplify these measures, Chang et al. (2015) proposed an approach that can automatically identify students’ WMC based on their study behavior patterns. The intriguing question is then whether there are study behavior characteristics that correspond to the students’ WMC? This work explores to what extent it is possible to map individual WMC data onto individual patterns of learning by correlating working memory capacity with learners´ study behavior in an adaptive web-based learning system. Several machine learning models together with a rich context model have been applied to identify the most relevant study behavior characteristics and to predict students’ WMC. The evaluation was performed based on data collected from 122 students during a period of 2 years using a web-based learning platform. The initial results show that there is no linear correlation with learners´ study behavior and their WMC.
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| 22. |
- Lincke, Alisa, 1989-, et al.
(författare)
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The performance of some machine learning approaches and a rich context model in student answer prediction
- 2021
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Ingår i: Research and Practice of Technology Enhanced Learning. - : Springer. - 1793-2068 .- 1793-7078. ; 16
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Tidskriftsartikel (refereegranskat)abstract
- Web-based learning systems with adaptive capabilities to personalize content are becoming nowadays a trend in order to offer interactive learning materials to cope with a wide diversity of students attending online education. Learners’ interaction and study practice (quizzing, reading, exams) can be analyzed in order to get some insights into the student’s learning style, study schedule, knowledge, and performance. Quizzing might be used to help to create individualized/personalized spaced repetition algorithm in order to improve long-term retention of knowledge and provide efficient learning in online learning platforms. Current spaced repetition algorithms have pre-defined repetition rules and parameters that might not be a good fit for students’ different learning styles in online platforms. This study uses different machine learning models and a rich context model to analyze quizzing and reading records from e-learning platform called Hypocampus in order to get some insights into the relevant features to predict learning outcome (quiz answers). By knowing the answer correctness, a learning system might be able to recommend personalized repetitive schedule for questions with maximizing long-term memory retention. Study results show that question difficulty level and incorrectly answered previous questions are useful features to predict the correctness of student’s answer. The gradient-boosted tree and XGBoost models are best in predicting the correctness of the student’s answer before answering a quiz. Additionally, some non-linear relationship was found between the reading learning material behavior in the platform and quiz performance that brings added value to the accuracy for all used models.
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| 23. |
- Lincke, Alisa, 1989-, et al.
(författare)
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Using Data Mining Techniques to Assess Students’ Answer Predictions
- 2019
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Ingår i: ICCE 2019 - 27th International Conference on Computers in Education, Proceedings. - Kenting, Taiwan : Asia-Pacific Society for Computers in Education. - 9789869721431 ; , s. 42-50
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Konferensbidrag (refereegranskat)abstract
- Estimating students´ knowledge and performance, modeling their learning behaviors, and discovering and analyzing their different characteristics are some of the main tasks in the field of research called educational data mining (EDM). According to Chounta (2017), the predicted probabilities that a student will answer a question correctly can provide some insights into the student´s knowledge. Based on this point of departure, the main objective of this paper is to apply different data mining techniques to predict the probabilities that students will answer questions correctly by using their interaction records with a web-based learning platform called Hypocampus. Five different machine learning algorithms and a rich context model were used on the Hypocampus dataset. The results of our evaluation indicate that the gradient-boosted tree and the XGboost algorithms are best in predicting the correctness of the student’s answer
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| 24. |
- Lübbers, Tanja, et al.
(författare)
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Application of Microcontrollers for Fostering Computational Thinking by Using the Calliope System in School
- 2018
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Ingår i: Proceedings of the 26th International Conference on Computers in Education. - : Asia-Pacific Society for Computers in Education. - 9789869401289 ; , s. 500-505
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Konferensbidrag (refereegranskat)abstract
- In this paper, we deliver insights into our work with the Calliope system. Weunderline the usefulness of the Calliope system and its positive characteristics relating to anevaluation we did with 50 pupils in German schools. Additionally we report about thelearning scenarios we conducted and illustrated how the learning of the IFTTT conditionsand according to that Computational Thinking skills can be taught during school lessons byusing computational devices like the Calliope mini.
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| 25. |
- Markard, M., et al.
(författare)
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About an Extension of the Model-View-Controller Design Pattern for Increasing the Flexibility of Web Based Applications : design and first experiences
- 2013
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Ingår i: Proceedings of the 9th International Conference on Web Information Systems and Technology. - : INSTICC Press. ; , s. 304-307
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Konferensbidrag (refereegranskat)abstract
- The development of web based applications gained enormous interests in recent years. Most of formerly desktop based applications nowadays provide at least a web based version or are completely reimplemented as web based applications. Nevertheless, from the development point of view, there are still a lot of strategies for the development of web based applications borrowed from the development strategies for desktop applications. Therefore, this paper concentrates on the description of an approach that allows to re-use a from the development of desktop applications well-known Design Pattern with a distinct enhancement for web based applications.
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| 26. |
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| 27. |
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| 28. |
- Qasem, Ziyaad, et al.
(författare)
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Dynamic, Adaptive, and Mobile System for Context-Based and Intelligent Support of Employees in Heavy Industry
- 2018
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Ingår i: Proceedings. 2018 Sixth International Conference on Enterprise Systems. - Los Alamitos, CA : IEEE. ; , s. 90-95
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Konferensbidrag (refereegranskat)abstract
- Industry 4.0 is known as the fourth industrial revolution which refers to the integration of technologies that make the factories interoperable by seamlessly connecting machines, employees and sensors for communication. In Industry 4.0, one of the key features is the use of new technologies to recognize the current context. Thus, the employees are supported with contextual information for speeding up decision-making during various processes related to planning, production, maintenance, etc. As a contribution to this area, the work described here aims to introduce a cyber-physical system (CPS) approach to provide context-based and intelligent support to employees in heavy industries using new technologies, especially in the field of mobile devices. In this work, mobile device sensors and image processing techniques are used to recognize the context which requires specific support. In addition, new scenarios and associated processes are developed to support the employees on the basis of new, flexible, adaptive and mobile technologies.
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| 29. |
- Qasem, Ziyaad, et al.
(författare)
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Unification of Social Networking Sites : Architectural Perspective
- 2016
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Ingår i: 2015 World Congress on Information Technology and Computer Applications Congress (WCITCA). - : IEEE Press. - 9781467366359 ; , s. 1-5
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Konferensbidrag (refereegranskat)abstract
- Social networking sites (SNSs) are an integral part of our daily life. With the evermore increasing appearance of SNSs, their users spend considerable time producing of different forms everyday (e.g. text, videos, photos, links, etc.) or browsing the varieties of contents in different SNSs. In this paper, we propose an architectural perspective on a framework that provides a unified environment through which users can produce and browse different contents of SNSs from one place.
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| 30. |
- Schäfer, Michael, et al.
(författare)
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About Multicopters and Other Smart Devices for Environmental Monitoring
- 2013
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Ingår i: 2013 World Congress on Computer and Information Technology (WCCIT). - : IEEE Press. - 9781479904600 ; , s. 1-5
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Konferensbidrag (refereegranskat)abstract
- In recent years, the development of smart and mobile devices gained more and more attention. Here, embedded systems provide a fast and convenient way for the implementation of new applications that allow for flexible and innovative interaction with our environment. Additionally, the development in the area of embedded systems does not only provide an easy and flexible way for interaction with the environment, but at the same time also a very cost efficient way. This paper presents an approach that utilizes multicopters, equipped with a small embedded system that allows to monitor environmental data like the current CO2 value and other measures for air quality in realtime. Furthermore, with a multilevel measurement concept, the described system allows for a later on analysis of the gathered data and collected gas probes in more detail. Finally, the system provides the datasets for further analysis and/or visualization.
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| 31. |
- Wain, Louise V., et al.
(författare)
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Novel Blood Pressure Locus and Gene Discovery Using Genome-Wide Association Study and Expression Data Sets From Blood and the Kidney
- 2017
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Ingår i: Hypertension. - 0194-911X .- 1524-4563. ; 70:3, s. e4-e19
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Tidskriftsartikel (refereegranskat)abstract
- Elevated blood pressure is a major risk factor for cardiovascular disease and has a substantial genetic contribution. Genetic variation influencing blood pressure has the potential to identify new pharmacological targets for the treatment of hypertension. To discover additional novel blood pressure loci, we used 1000 Genomes Project-based imputation in 150 134 European ancestry individuals and sought significant evidence for independent replication in a further 228 245 individuals. We report 6 new signals of association in or near HSPB7, TNXB, LRP12, LOC283335, SEPT9, and AKT2, and provide new replication evidence for a further 2 signals in EBF2 and NFKBIA. Combining large whole-blood gene expression resources totaling 12 607 individuals, we investigated all novel and previously reported signals and identified 48 genes with evidence for involvement in blood pressure regulation that are significant in multiple resources. Three novel kidney-specific signals were also detected. These robustly implicated genes may provide new leads for therapeutic innovation.
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