Informatik
Refine
Document Type
- Conference proceeding (567)
- Journal article (198)
- Book chapter (62)
- Doctoral Thesis (18)
- Book (10)
- Anthology (10)
- Patent / Standard / Guidelines (2)
- Report (2)
- Working Paper (2)
Is part of the Bibliography
- yes (871)
Institute
- Informatik (871)
- Technik (2)
Publisher
- Springer (173)
- Hochschule Reutlingen (104)
- IEEE (89)
- Gesellschaft für Informatik (60)
- Elsevier (46)
- ACM (33)
- IARIA (26)
- Springer Gabler (15)
- De Gruyter (12)
- Association for Information Systems (AIS) (11)
- RWTH Aachen (11)
- Università Politecnica delle Marche (11)
- MDPI (10)
- Deutsche Gesellschaft für Computer- und Roboterassistierte Chirurgie e.V. (9)
- SCITEPRESS (8)
- Haufe (7)
- IOS Press (7)
- Emerald (6)
- University of Hawai'i at Manoa (6)
- Association for Computing Machinery (5)
- SPIE (5)
- Fac. of Organization & Informatics, Univ. of Zagreb (4)
- IGI Global (4)
- RWTH (4)
- Springer International Publishing (4)
- University of Hawaii at Manoa (4)
- Universität Tübingen (4)
- American Marketing Association (3)
- Deutsche Gesellschaft für Computer- und Roboterassistierte Chirurgie e. V. (3)
- International Academy of Business Disciplines (3)
- Open Proceedings.org, Univ. of Konstanz (3)
- Riga Technical University Press (3)
- Sage (3)
- Science and Technology Publications (3)
- Springer Science + Business Media B.V (3)
- Springer Science + Business Media B.V. (3)
- University of Konstanz, University Library (3)
- Wiley-Blackwell (3)
- Academic Conferences International (2)
- American Marketing Assoc. (2)
- BioMed Central (2)
- CSW-Verlag (2)
- Curran Associates (2)
- Curran Associates Inc. (2)
- Deutsche Aktuarvereinigung (DAV) e.V. (2)
- EuroMed Press (2)
- GMDS e.V. (2)
- Gabler (2)
- Gesellschaft für Informatik e.V (2)
- HTWG Konstanz (2)
- IADIS (2)
- IADIS Press (2)
- IBM Research Division (2)
- International Association for Development of the Information Society (2)
- International Society for Photogrammetry and Remote Sensing (2)
- PeerJ Ltd. (2)
- Smart Home & Living Baden-Württemberg e.V. (2)
- Springer Vieweg (2)
- Taylor & Francis (2)
- The Association for Computing Machinery, Inc. (2)
- Thieme (2)
- University of Hawaii (2)
- University of the West of Scotland (2)
- Universität Stuttgart (2)
- 3m5.Media GmbH (1)
- AIP Publishing (1)
- ARVO (1)
- Academic Conferences International Limited (1)
- Association for Computing Machinery ACM (1)
- Association of Computing Machinery (1)
- CIDR (1)
- CMP-WEKA-Verlag (1)
- Cambridge University Press (1)
- Circle International (1)
- Copenhagen Business School (1)
- Cornell Universiy (1)
- Cuvillier Verlag (1)
- DIMECC Oy (1)
- DUZ Medienhaus (1)
- Deutsche Gesellschaft für Medizinische Physik (1)
- Deutsche Gesellschaft für die Computer- und Roboterassistierte Chirurgie e.V. (1)
- EDP Sciences (1)
- EMAC (1)
- Ed2.0Work (1)
- Elektronikpraxis, Vogel Business Media GmbH & Co. KG (1)
- EuroMedPress (1)
- Eurographics Association (1)
- Fachausschuß Management der Anwendungsentwicklung und -wartung (1)
- Faculty of Economics (1)
- Faculty of Organization and Informatics, University of Zagreb (1)
- Frontiers Media (1)
- Frontiers Research Foundation (1)
- GBI-Genios (1)
- GITO-Verl. (1)
- German Medical Science Publishing House (1)
- Haufe Group (1)
- Hochschule Heilbronn (1)
- Hochschule der Medien (1)
- IGI Publ. (1)
- IGI Publishing (1)
- IMC Information multimedia communication AG (1)
- Inderscience Publ. (1)
- Inst. of Electrical and Electronics Engineers (1)
- JMIR Publications (1)
- Johannes Kepler University Linz (1)
- Karlsruher Institut für Technologie (1)
- Lund University (1)
- MCB University Press (1)
- MFG Stiftung Baden-Württemberg (1)
- MHP. a Porsche Company (1)
- Morressier (1)
- NextMed (1)
- OpenProceedings (1)
- PLOS (1)
- Pabst Science Publishers (1)
- Pallas Press (1)
- PeerJ (1)
- Riga Technical University (1)
- Routledge, Taylor & Francis Group (1)
- SISSA (1)
- SSRN (1)
- SciKA (1)
- Science and Technology Publications, Lda (1)
- Shaker Verlag (1)
- Society for Science and Education (1)
- Springer Nature (1)
- Springer Science + Business Media (1)
- Technical University (1)
- Technische Universität Darmstadt (1)
- The Association for Computing Machinery (1)
- Univ. de Jaén (1)
- Universidad Carlos III de Madrid (1)
- University of Minho (1)
- University of Portsmouth (1)
- University of Zagreb Faculty of Organization and Informatics (1)
- Universität Leipzig (1)
- Universität Trier (1)
- Universität des Saarlandes (1)
- Univerzita Tomáe Bati (1)
- Wiley (1)
- World Scientific (1)
- World Scientific Publishing (1)
- de Gruyter (1)
- dpunkt-Verlag (1)
- libreriauniversitaria.it.edizioni (1)
- vwh (1)
Radiofrequency ablation is an ablation technique to treat tumors with focused heat. Computer tomography, ultrasound and magnetic resonance imaging (MRI) are imaging modalities which can be used for image-guided procedures. MRI offers several advantages in comparison to the other imaging modalities, such as radiation-free fluoroscopic imaging, temperature mapping, a high-soft-tissue contrast and free selection of imaging planes. This work addresses the application of 3Dcontrollers for controlling interventional, fluoroscopic MR sequences at the scenario of MR guided radiofrequency ablation of hepatic malignancies. During this procedure, the interventionalist can monitor the targeting of the tumor with near-real time fluoroscopic sequences. In general, adjustments of the imaging planes are necessary during tumor targeting, which is performed by an assistant in the control room. Therefore, communication between the interventionalist in the scanner room and the assistant in the control room is essential. However, verbal communication is impaired due to the loud scanning noises. Alternatively, non-verbal communication between the two persons is possible, however limited to a few gestures and susceptible to misunderstandings. This work is analyzing different 3D-controllers to enable control of interventional MR sequences during MR-guided procedures directly by the interventionalist. Leap Motion, Wii Remote, SpaceNavigator, Phantom Omni and Foot Switch were selected. For that a simulation was built in C++ with VTK to feign the real scenario for test purposes. Previous results showed that Leap Motion is not suitable for the application while Wii Remote and Foot Switch are possible input devices. Final evaluation showed a generally time reduction with the use of 3D-controllers. Best results were reached with Wii Remote in 34 seconds. Handholding input devices like Wii Remote have further potential to integrate them in real environment to reduce intervention time.
Digitization of societies changes the way we live, work, learn, communicate, and collaborate. In the age of digital transformation IT environments with a large number of rather small structures like Internet of Things (IoT), microservices, or mobility systems are emerging to support flexible and agile digitized products and services. Adaptable ecosystems with service oriented enterprise architectures are the foundation for self-optimizing, resilient run-time environments and distributed information systems. The resulting business disruptions affect almost all new information processes and systems in the context of digitization. Our aim are more flexible and agile transformations of both business and information technology domains with more flexible enterprise information systems through adaptation and evolution of digital enterprise architectures. The present research paper investigates mechanisms for decision-controlled digitization architectures for Internet of Things and microservices by evolving enterprise architecture reference models and state of the art elements for architectural engineering for micro-granular systems.
Digitization fosters the development of IT environments with many rather small structures, like Internet of Things (IoT), microservices, or mobility systems. They are needed to support flexible and agile digitized products and services. The goal is to create service-oriented enterprise architectures (EA) that are self optimizing and resilient. The present research paper investigates methods for decision-making concerning digitization architectures for Internet of Things and microservices. They are based on evolving enterprise architecture reference models and state of the art elements for architectural engineering for microgranular systems. Decision analytics in this field becomes increasingly complex and decision support, particularly for the development and evolution of sustainable enterprise architectures, is sorely needed. The challenging of the decision processes can be supported with in a more flexible and intuitive way by an architecture management cockpit.
Digital enterprise architecture management in tourism : state of the art and future directions
(2018)
The advance of information technology impacts tourism more than many other industries, due to the service character of its products. Most offerings in tourism are immaterial in nature and challenging in coordination. Therefore, the alignment of IT and strategy and digitization is of crucial importance to enterprises in tourism. To cope with the resulting challenges, methods for the management of enterprise architectures are necessary. Therefore, we scrutinize approaches for managing enterprise architectures based on a literature research. We found many areas for future research on the use of enterprise architecture in tourism.
Digitization transforms business process models and processes in many enterprises. However, many of them need guidance, how digitization is impacting the design of their information systems. Therefore, this paper investigates the influence of digitization on information system design. We apply a two-phase research method applying a literature review and an exploratory case study. The case study took place in the IT service provider of a large insurance enterprise. The study’s results suggest that a number of areas of information system design are affected, such as architecture, processes, data and services.
In a time of digital transformation, the ability to quickly and efficiently adapt software systems to changed business requirements becomes more important than ever. Measuring the maintainability of software is therefore crucial for the long-term management of such products. With service-based systems (SBSs) being a very important form of enterprise software, we present a holistic overview of such metrics specifically designed for this type of system, since traditional metrics – e.g. object oriented ones – are not fully applicable in this case. The selected metric candidates from the literature review were mapped to 4 dominant design properties: size, complexity, coupling, and cohesion. Microservice-based systems (μSBSs) emerge as an agile and fine grained variant of SBSs. While the majority of identified metrics are also applicable to this specialization (with some limitations), the large number of services in combination with technological heterogeneity and decentralization of control significantly impacts automatic metric collection in such a system. Our research therefore suggests that specialized tool support is required to guarantee the practical applicability of the presented metrics to μSBSs.
Towards a practical maintainability quality model for service- and microservice-based systems
(2017)
Although current literature mentions a lot of different metrics related to the maintainability of service-based systems (SBSs), there is no comprehensive quality model (QM) with automatic evaluation and practical focus. To fill this gap, we propose a Maintainability Model for Services (MM4S), a layered maintainability QM consisting of service properties (SPs) related with automatically collectable Service Metrics (SMs). This research artifact created within an ongoing Design Science Research (DSR) project is the first version ready for detailed evaluation and critical feedback. The goal of MM4S is to serve as a simple and practical tool for basic maintainability estimation and control in the context of BSs and their specialization
microservice-based systems (μSBSs).
Context: Development of software intensive products and services increasingly occurs by continuously deploying product or service increments, such as new features and enhancements, to customers. Product and service developers must continuously find out what customers want by direct customer feedback and usage behaviour observation. Objective: This paper examines the preconditions for setting up an experimentation system for continuous customer experiments. It describes the RIGHT model for Continuous Experimentation (Rapid Iterative value creation Gained through High-frequency Testing), illustrating the building blocks required for such a system. Method: An initial model for continuous experimentation is analytically derived from prior work. The model is matched against empirical case study findings from two startup companies and further developed. Results: Building blocks for a continuous experimentation system and infrastructure are presented. Conclusions: A suitable experimentation system requires at least the ability to release minimum viable products or features with suitable instrumentation, design and manage experiment plans, link experiment results with a product roadmap, and manage a flexible business strategy. The main challenges are proper, rapid design of experiments, advanced instrumentation of software to collect, analyse, and store relevant data, and the integration of experiment results in both the product development cycle and the software development process.
Software engineering education is under constant pressure to provide students with industry-relevant knowledge and skills. Educators must address issues beyond exercises and theories that can be directly rehearsed in small settings. Industry training has similar requirements of relevance as companies seek to keep their workforce up to date with technological advances. Real-life software development often deals with large, software-intensive systems and is influenced by the complex effects of teamwork and distributed software development, which are hard to demonstrate in an educational environment. A way to experience such effects and to increase the relevance of software engineering education is to apply empirical studies in teaching. In this paper, we show how different types of empirical studies can be used for educational purposes in software engineering. We give examples illustrating how to utilize empirical studies, discuss challenges, and derive an initial guideline that supports teachers to include empirical studies in software engineering courses. Furthermore, we give examples that show how empirical studies contribute to high-quality learning outcomes, to student motivation, and to the awareness of the advantages of applying software engineering principles. Having awareness, experience, and understanding of the actions required, students are more likely to apply such principles under real-life constraints in their working life.
Knowledge is an important resource, whose transfer is still not completely understood. The underlying belief of this thesis is that knowledge cannot be transferred directly from one person to another but must be converted for the transfer and therefore is subject to loss of knowledge and misunderstanding. This thesis proposes a new model for knowledge transfer and empirically evaluates this model. The model is based on the belief that knowledge must be encoded by the sender to transfer it to the receiver, who has to decode the message to obtain knowledge.
To prepare for the model this thesis provides an overview about models for knowledge transfer and factors that influence knowledge transfer. The proposed theoretical model for knowledge transfer is implemented in a prototype to demonstrate its applicability. The model describes the influence of the four layers, namely code, syntactic, semantic, and pragmatic layers, on the encoding and decoding of the message. The precise description of the influencing factors and the overlapping knowledge from sender and receiver facilitate its implementation.
The application area of the layered model for knowledge transfer was chosen to be business process modelling. Business processes incorporate an important knowledge resource of an organisation as they describe the procedures for the production of products and services. The implementation in a software prototype allows a precise description of the process by adding semantic to the simple business process modelling language used.
This thesis contributes to the body of knowledge by providing a new model for knowledge transfer, which shows the process of knowledge transfer in greater detail and highlights influencing factors. The implementation in the area of business process modelling reveals the support provided by the model. An expert evaluation indicates that the implementation of the proposed model supports knowledge transfer in business process modelling. The results of the qualitative evaluation are supported by the findings of a qualitative evaluation, performed as a quasi-experiment with a pre-test/post-test design and two experimental groups and one control group. Mann-Whitney U tests indicated that the group that used the tool that implemented the layered model performed significantly better in terms of completeness (the degree of completeness achieved in the transfer) in comparison with the group that used a standard BPM tool (Z = 3.057, p = 0.002, r = 0.59) and the control group that used pen and paper (Z = 3.859, p < 0.001, r = 0.72). The experiment indicates that the implementation of the layered model supports the creation of a business process and facilitates a more precise representation.