TY - CHAP A1 - Geisler, Stefan A1 - Kao, Odej T1 - Simulation von Parallelrechnerarchitekturen für Bilddatenbanken T2 - Proceedings der Fachtagung Gesellschaft für Informatik Y1 - 2001 SP - 324 EP - 324 ER - TY - CHAP A1 - Geisler, Stefan A1 - Kao, Odej T1 - Detailbasiertes Retrieval in Bilddatenbanken unter Benutzung von Koeffizienten aus der à trous Transformierten T2 - Proceedings der Fachtagung Gesellschaft für Informatik Y1 - 2001 SP - 135 EP - 138 ER - TY - CHAP A1 - Seelen, Werner A1 - Iossifidis, Ioannis A1 - Steinhage, Axel T1 - Visually guided behavior of an autonomous robot with a neuronal architecture T2 - 2001 IEEE International Symposium on Computational Intelligence in Robotics and Automation Y1 - 2001 ER - TY - CHAP A1 - Iossifidis, Ioannis A1 - Steinhage, Axel T1 - Dynamical Systems: A Framework for Man Machine Interaction T2 - Proceedings of the International Conference On Automation and Information: Theory and Applications 2001 Y1 - 2001 SP - 1 EP - 7 ER - TY - JOUR A1 - Iossifidis, Ioannis T1 - Video Demonstration: Interactive grasping Y1 - 2002 ER - TY - THES A1 - Jansen, Marc T1 - Ein Rahmensystem für die Protokollierung und Rücknahme von Benutzeraktionen in replizierten Umgebungen Y1 - 2002 ER - TY - CHAP A1 - Ehmke, Christian A1 - Geisler, Stefan A1 - la Tendresse, Ingo T1 - A-priori Lastverteilung in einer heterogenen verteilten Bilddatenbank T2 - Proceedings der Fachtagung Gesellschaft für Informatik (Informatiktage 2002) Y1 - 2003 VL - 2003 SP - 188 EP - 193 ER - TY - CHAP A1 - Geisler, Stefan T1 - Effizienter Bildvergleich in MPEG-1-Videos T2 - Proceedings der Fachtagung Gesellschaft für Informatik (Informatiktage 2002) Y1 - 2003 VL - 2003 SP - 183 EP - 187 ER - TY - CHAP A1 - Geisler, Stefan A1 - Kao, Odey A1 - la Tendresse, Ingo A1 - Timm, M. A1 - Winkler, T. T1 - ShaderSearch - Simple Template Matching on a GeForce4 T2 - Proceedings of the 2003 International Conference on Image Science, Systems and Technology Y1 - 2003 SP - 538 EP - 541 PB - CSREA Press ER - TY - GEN A1 - Schäfer, Michael T1 - Migration von Anwendungen von MS Windows zu Linux T2 - Vortrag: GEBIT GmbH, Münster Y1 - 2003 ER - TY - GEN A1 - Schäfer, Michael T1 - Aufbau und Anforderungen an E-Learning-Systeme am Beispiel von ILIAS T2 - Vortrag: Paritätisches Bildungswerk, Wuppertal Y1 - 2003 ER - TY - CHAP A1 - Gaßner, K. A1 - Jansen, Marc A1 - Harrer, Andreas A1 - Herrmann, K. A1 - Hoppe, Ulrich T1 - Analysis Methods for Collaborative Models and Activities T2 - Proceedings of the International Conference on Computer Supported Collaborative Learning (CSCL2003) Y1 - 2003 VL - 2003 ER - TY - JOUR A1 - Handmann, Uwe A1 - Dose, Michael T1 - Lernen im Kontext der Szenenanalyse JF - Lernen zur Organisation komplexer Systeme der Informationsverarbeitung Y1 - 2003 ER - TY - RPRT A1 - Handmann, Uwe A1 - Dose, Michael T1 - Lernen zur Organisation komplexer Systeme der Informationsverarbeitung [Abschlussbericht des Verbundprojekts] Y1 - 2003 ER - TY - GEN A1 - Schäfer, Michael T1 - Aufbau eines Knowledge Management Systems mit Open Source Werkzeugen T2 - Vortrag: fa. Berndes, Arnsberg Y1 - 2004 ER - TY - BOOK A1 - Prassler, Erwin A1 - Lawitzky, Gisbert A1 - Stopp, Andreas A1 - Grunwald, Gerhard A1 - Hägele, Martin A1 - Dillmann, Rüdiger A1 - Iossifidis, Ioannis T1 - Advances in Human-Robot Interaction N2 - Advances in Human-Robot Interaction" provides a unique collection of recent research in human-robot interaction. It covers the basic important research areas ranging from multi-modal interfaces, interpretation, interaction, learning, or motion coordination to topics such as physical interaction, systems, and architectures. The book addresses key issues of human-robot interaction concerned with perception, modelling, control, planning and cognition, covering a wide spectrum of applications. This includes interaction and communication with robots in manufacturing environments and the collaboration and co-existence with assistive robots in domestic environments. Among the presented examples are a robotic bartender, a new programming paradigm for a cleaning robot, or an approach to interactive teaching of a robot assistant in manufacturing environment. This carefully edited book reports on contributions from leading German academic institutions and industrial companies brought together within MORPHA, a 4 year project on interaction and communication between humans and anthropomorphic robot assistants. Y1 - 2004 SN - 978-3642062209 PB - Springer Press ER - TY - CHAP A1 - Iossifidis, Ioannis A1 - Steinhage, Axel T1 - Behavior Generation For Anthropomorphic Robots by Means of Dynamical Systems T2 - Advances in Human-Robot-Interaction N2 - This article describes the current state of our research on anthropomorphic robots. Our aim is to make the reader familiar with the two basic principles our work is based on: anthropomorphism and dynamics. The principle of anthropomorphism means a restriction to human-like robots which use version, audition and touch as their only sensors so that natural man-machine interaction is possible. The principle of dynamics stands for the mathematical framework based on which our robots generate their behavior. Both principles have their root in the idea that concepts of biological behavior and information processing can be exploited to control technical systems. Y1 - 2004 UR - https://link.springer.com/chapter/10.1007%2F978-3-540-31509-4_24 VL - 2004 SP - 269 EP - 300 PB - Springer Press ER - TY - CHAP A1 - Iossifidis, Ioannis A1 - Lawitzky, Gisbert A1 - Knoop, Steffen A1 - Zöllner, Raoul T1 - Towards Benchmarking of Domestic Robotic Assistants T2 - Advances in Human-Robot-Interaction N2 - As service robotics research advances rapidly, availability of objective, reproducible test specifications and evaluation criteria and also of benchmarking is more and more felt to be desirable in the community. As a first step towards benchmarking, in this paper we propose a formalization of tests - exemplified for domestic grasp&place tasks. The underlying philosophy of our approach is to confront the robot system in a black-box manner with requirements of a “rational customer”, and characterize the performance of the system in an objective way by the outcomes of a test-suite tailored to this scenario. A formalized single test description consists of a clear and reproducible specification of the robot’s task and the full context on the one hand, and a number of figures which objectively characterize the test result on the other hand. We illustrate this methodology for the domestic assistance scenario. Y1 - 2004 UR - https://link.springer.com/chapter/10.1007/978-3-540-31509-4_33 SP - 403 EP - 414 PB - Springer Press ER - TY - CHAP A1 - Iossifidis, Ioannis A1 - Bruckhoff, Carsten A1 - Theis, Christoph A1 - Grote, Claudia A1 - Faubel, Christian A1 - Schöner, Gregor T1 - A Cooperative Robotic Assistant (CoRA) for Human Environments T2 - Advances in Human-robot-Interaction N2 - CoRA is a robotic assistant whose task is to collaborate with a human operator on simple manipulation or handling tasks. Its sensory channels comprising vision, audition, haptics, and force sensing are used to extract perceptual information about speech, gestures and gaze of the operator, and object recognition. The anthropomorphic robot arm makes goal-directed movements to pick up and hand-over objects. The human operator may mechanically interact with the arm by pushing it away (haptics) or by taking an object out of the robot’s gripper (force sensing). The design objective has been to exploit the human operator’s intuition by modeling the mechanical structure, the senses, and the behaviors of the assistant on human anatomy, human perception, and human motor behavior. Y1 - 2004 SP - 385 EP - 401 PB - Springer Press ER - TY - CHAP A1 - Pinkwart, Niels A1 - Jansen, Marc A1 - Oelinger, Maria A1 - Korchounova, Lena A1 - Hoppe, Ulrich T1 - Partial Generation of Contextualized Metadata in a Collaborative Modeling Environment T2 - Workshop Proceedings of the 3rd International Conference on Adaptive Hypermedia N2 - In asynchronous collaboration scenarios, document metadata play an important role for indexing and retrieving documents in jointly used archives. However, the manual input of metadata is usually an unpleasant and error prone task. This paper describes an approach that allows the partially automatic generation of metadata in a collaborative modeling environment. It illustrates some usage scenarios for the metadata within the modelling framework – including concepts for document based social navigation and ideas for tool embedded archive queries based on the current state of the user's work. Y1 - 2004 UR - https://publications.informatik.hu-berlin.de/archive/cses/publications/partial_generation_of_contextualized_metadata_in_a_collaborative_modeling_e_GKoFv0v.pdf SP - 372 EP - 376 ER - TY - CHAP A1 - Sotsenko, Alisa A1 - Jansen, Marc A1 - Milrad, Marcelo T1 - Using a Rich Context Model for People-to-People Recommendation N2 - In this paper we present an approach for People-to-People recommendations based on a Rich Context Model (RCM). We consider personal user information as contextual information used for our recommendations. The evaluation of our recommendation approach was performed on a social network of students. The obtained results do show a significant increase in performance while, at the same time, a slight increase in quality in comparison to a manual matching process. The proposed approach is flexible enough to handle different data types of contextual information and easy adaptable to other recommendation domains. Y1 - 2015 UR - https://ieeexplore.ieee.org/document/7300891/authors#authors ER - TY - CHAP A1 - Sotsenko, Alisa A1 - Jansen, Marc A1 - Milrad, Marcelo A1 - Zbick, Janosch T1 - Contextualization of Mobile Learners T2 - Mobile Learning: Trends, Attitudes and Effectiveness N2 - This chapter describes our current research efforts related to the contextualization of learners in mobile learning activities. Substantial research in the field of mobile learning has explored aspects related to contextualized learning scenarios. However, new ways of interpretation and consideration of contextual information of mobile learners are necessary. This chapter provides an overview regarding the state of the art of innovative approaches for supporting contextualization in mobile learning. Additionally, we provide the description of the design and implementation of a flexible multi-dimensional vector space model to organize and process contextual data together with visualization tools for further analysis and interpretation. We also present a study with outcomes and insights on the usage of the contextualization support for mobile learners. To conlcude, we discuss the benefits of using contextualization models for learners in different use-cases. Moreover, a description is presented in order to illustrate how the proposed contextual model can easily be adapted and reused for different use-cases in mobile learning scenarios and potentially other mobile fields. Y1 - 2015 VL - 2015 SP - 39 EP - 54 PB - Nova Science Publisher Inc. ER - TY - CHAP A1 - Eimler, Sabrina C. A1 - Mauerhoefer, L T1 - Deal or no Deal? - Gender, Migrant Background and Career Level in Business Network Profile Evaluation T2 - Tagung Medienpsychologie der Deutschen Gesellschaft für Psychologie Y1 - 2015 VL - 2015 ER - TY - CHAP A1 - Eimler, Sabrina C. A1 - Neubaum, German A1 - Mannsfeld, Marc A1 - Krämer, Nicole C. T1 - Altogether Now! Mass and Small Group Collaboration in (Open) Online Courses: A Case Study T2 - Mass Collaboration and Education N2 - Massive open online courses (MOOCs) become more and more popular. These course formats are typically highly flexible and attract large groups of learners from heterogeneous backgrounds. So far research in this area concentrating on success factors for low dropout rates and high satisfaction on the side of the learners in MOOCs is scarce. In this chapter, we describe experiences of a large online course offered to students of two large German universities. Based on theory drawn from a social psychological perspective on the relevance of social interaction for learning, we describe the background, structure, and specific elements of the MOOC-like course. We outline evaluation results of both small group collaboration (in workshops) and mass interaction (via forum and wiki usage) as well as results of the general evaluation of the overall course concept. We argue that the specific mixture of small and large group interaction as well as teacher- and learner-generated content is especially promising with regard to satisfaction, learning outcomes, and course completion rates. Y1 - 2016 U6 - http://dx.doi.org/https://doi.org/10.1007/978-3-319-13536-6_14 VL - 2016 SP - 285 EP - 304 PB - Springer CY - Berlin ER - TY - CHAP A1 - Ziebarth, Sabrina A1 - Neubaum, German A1 - Kyewski, Elias A1 - Krämer, Nicole C. A1 - Hoppe, Ulrich H. A1 - Hecking, Tobias A1 - Eimler, Sabrina C. T1 - Resource Usage in Online Courses: Analyzing Learner’s Active and Passive Participation Patterns T2 - 11th International Conference on Computer Supported Collaborative Learning N2 - The paper analyzes the experience with an open university course for a very heterogeneous target group in which MOOC-like materials and activities were used. The course was conducted in a specifically prepared and extended Moodle environment. The analysis involves questionnaires as well as performance data that reflect the resource access on the learning platform. A special focus is put on the participants’ acceptance and usage of student-generated versus teacher-provided learning content. Network analysis techniques have been used to identify "interest clusters" of students around certain resources. Y1 - 2015 VL - 2015 SP - 395 EP - 402 PB - International Society of the Learning Sciences, Inc. [ISLS] ER - TY - CHAP A1 - Qasem, Ziyaad A1 - Jansen, Marc T1 - Unification of Social Networking Sites T2 - Proceedings of The World Congress on Information Technology and Computer Applications 2015 N2 - 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. Y1 - 2015 UR - https://ieeexplore.ieee.org/document/7367072 U6 - http://dx.doi.org/10.1109/WCITCA.2015.7367072 ER - TY - CHAP A1 - Zbick, Janosch A1 - Nake, Isabella A1 - Milrad, Marcelo A1 - Jansen, Marc T1 - A web-based framework to design and deploy mobile learning activities: Evaluating its usability, learnability and acceptance T2 - Proceedings of The 15th IEEE International Conference on Advanced Learning Technologies - ICALT2015 N2 - This paper discusses the efforts carried out related to the design and development of a web-based framework that allows designing, deploying and executing mobile data collecting applications. Furthermore, it also allows analyzing and presenting the data that is generated during the mentioned process. The fact that the framework is completely web-based provides a platform independent execution of the mobile application on any mobile device with a web-browser. As a result that the whole life-cycle of creating, executing and discussing a mobile learning activity is implemented in pure web-based manner separates this work from similar efforts. In the course of this work, the current state of development of two of the components, the authoring tool and the mobile application is presented. This framework was introduced to teachers in an activity to follow up an initial study. On the basis of a workshop with teachers, we performed an explorative study regarding the technology acceptance and usability of two components of the proposed framework. The results are discussed and analyzed in this paper. Y1 - 2015 UR - https://ieeexplore.ieee.org/document/7265272 VL - 2015 ER - TY - CHAP A1 - Eimler, Sabrina C. A1 - Wörmer, Martin T1 - Gender differences in using the mobile gaming app QuizClash: Motivations, performance, strategy and success anticipation T2 - Annual Conference of the International Communication Association N2 - With the spread of mobile devices among both, men and women, app-based games also become more popular. While traditionally, digital games are more famous among men, women seem to spend more time and money on mobile gaming. There are a lot of open questions with regard to women and gaming in general; research on gender differences in app-based mobile gaming is almost nonexistent. Taking an exploratory perspective, our study investigates gender differences in general usage patterns, attachment towards the game and motivational differences for choosing to play the famous QuizClash app. Also, we identify differences in reported and actual performance in specific categories and capture anticipation of success as well as likeliness of choosing specific knowledge categories depending on the opponents’ performance profile. Y1 - 2015 ER - TY - CHAP A1 - Eimler, Sabrina C. T1 - Evaluation of Business Network Profiles: Gender and Career Level T2 - Annual Conference of the International Communication Association Y1 - 2015 ER - TY - JOUR A1 - Jansen, Marc A1 - Knebel, Christian A1 - Jugl, Peter T1 - Einführung des Vergabe-Management-Systems in NRW JF - LVDZ-Nachrichten Y1 - 2007 UR - https://www.destatis.de/GPStatistik/servlets/MCRFileNodeServlet/NWHeft_derivate_00006730/Z091200752_A.pdf;jsessionid=DFFF37A6004FB08DD3D1E0E4665354E2 VL - 2007 IS - 2/2007 SP - 23 EP - 26 ER - TY - THES A1 - Geisler, Stefan T1 - Inhaltsbasierte Videokodierung Y1 - 2005 SN - 3-89959-380-4 PB - Der Andere Verlag CY - Lübeck, Marburg ER - TY - JOUR A1 - Mütter, Jan A1 - Jansen, Marc T1 - IT.NRW ist SAP Customer Competence Center (SAP CCC) JF - LVDZ-Nachrichten Y1 - 2009 SN - ISSN: 1616-377X VL - 2009 IS - 1/2009 SP - 21 EP - 25 ER - TY - CHAP A1 - Geisler, Stefan T1 - Content-Based Video Coding of Newscasts for Mobile Devices T2 - International Conference on Imaging Science, Systems, and Technology (CISST 2005) Y1 - 2005 SP - 109 EP - 115 ER - TY - JOUR A1 - Jansen, Marc A1 - Wendt, Sebastian T1 - Toolunterstützung zum Risiko- und Stakeholder-Management auf der Basis von Standardsoftware JF - LVDZ-Nachrichten Y1 - 2009 SN - 1616-377X VL - 2009 IS - 1/2009 ER - TY - CHAP A1 - Geisler, Stefan A1 - Kao, Odej T1 - Parallel and Distributed Multimedia Databases T2 - M. Khosrow-Pour (Edt.): Encyclopedia of Information Science and Technology N2 - Sensing and processing of multimedia information is one of the basic traits of human beings. The development of digital technologies and applications allows the production of huge amounts of multimedia data. The rapidly decreasing prices for hardware such as digital cameras/camcorders, sound cards and the corresponding displays led to wide distribution of multimedia-capable input and output devices in all fields of the everyday life, from home entertainment to companies and educational organisations. Thus, multimedia information in terms of digital pictures, videos, and music can be created intuitively and is affordable for a broad spectrum of users. Y1 - 2005 SP - 223 EP - 232 PB - Idea Group Publishing ER - TY - BOOK ED - Jansen, Marc T1 - Programmierung von SAP-Systemen N2 - In diesem Buch sind die Ergebnisse eines Seminars zum Thema "Programmierung von SAP-Systemen" festgehalten. Es stellt eine Einführung in die Programmierung mit der Programmiersprache ABAP dar. Y1 - 2009 SN - 3839100593 PB - BoD - Books on Demand GmbH ER - TY - CHAP A1 - Hallak, George A1 - Bumiller, Gerd T1 - Coexistence analysis of impedance modulating transmitters T2 - 2013 IEEE 17th International Symposium on Power Line Communications and Its Applications: Johannesburg, South Afrika, 24.-27. März 2013 N2 - Recently, standardization bodies such as IEEE and ITU addressed, independently, standards for the medium access control (MAC) and physical layer specification of PLCs. MAC designers develop coexistence mechanisms irrespectively of the physical layer. Power line channel behavior changes every time a modem sends/receives on the channel. Changing the channel behavior influences the communication between nodes. As a consequence, the MAC coexistence mechanisms are affected. Power line impedance is a very important parameter on the design of PLC architecture. The changed channel behavior is a result of changing the impedance values between sending and receiving states. Transmitter and receiver nodes behave simultaneously on the power line. Transmitter nodes transmit although other nodes receive at the same time. Changing states from the MAC layer simultaneously between send and receive for the different nodes influence the channel behavior, as a consequence, influence the physical layer and the coexistence between the different nodes even when the systems are separated in frequency. In this paper, we discuss the coexistence of the NB-PLC applications considering the communication requirements. We then investigate the impedance problem of the power line by providing a typical transmission scenario and simulation results on the CENELEC frequency bands. Finally, we introduce a transmission model which overcomes the impedance problem and optimizes the communications between the non-interoperable nodes. Y1 - 2013 UR - https://ieeexplore.ieee.org/abstract/document/6525864 SN - 978-1-4673-6016-6 U6 - http://dx.doi.org/10.1109/ISPLC.2013.6525864 N1 - Zugriff aus dem Hochschulnetz der HRW möglich. SP - 279 EP - 284 PB - IEEE CY - Johannesburg, South Africa ER - TY - CHAP A1 - Iossifidis, Ioannis A1 - Schöner, Gregor T1 - Attractor dynamics approach for autonomous collision-free path generation in 3d-space for an 7 dof robot arm T2 - Proceedings of the ROBOTIK 2004, Leistungsstand - Anwendungen - Visionen - Trends, number 1841 in VDI-Berichte N2 - To enable a robotic assistant to autonomously reach for and transport objects while avoiding obstacles we have generalized the attractor dynamics approach established for vehicles to trajectory formation in robot arms. This approach is able to deal with the time-varying environments that occur when a human operator moves in a shared workspace. Stable fixed-points (attractors) for the heading direction of the end-effector shift during movement and are being tracked by the system. This enables the attractor dynamics aoproach to avoid the spurious states that hamper potential field methods. Separating planning and control computationally, the approach is also simpler to implement. The stability properties of the movement plan enable to approach to deal with fluctuating and imprecise sensory information. We implement this approach on a seven degree of freedom anthropomorphic arm reaching for objects on a working surface. We use an exact solution of the inverse kinematics, which enables us to steer the spatial position of the elbow clear of obstacles. The straight-line trajectories of the end-effector that result far from obstacles make the movement goals of the robotic assistant predictable, improving man-machine interaction. Y1 - 2004 VL - 2004 IS - 1841 SP - 815 EP - 822 PB - VDI Verlag CY - München ER - TY - CHAP A1 - Geisler, Stefan A1 - Joubert, Gerhard R. T1 - NewsGrid T2 - Grid Computing: The New Frontier of High Performance Computing N2 - Film archives—particularly those storing video material on all kinds of news items—are important information sources for TV stations. Each TV station creates and maintains its own archive by storing video material received via satellite and/or internet on tapes in analogue and/or digital form. It cannot be predicted in advance which of this archived material will actually be used. Thus all material received must be catalogued and stored. On average only a small percentage of the material stored is actually used. Due to the increase in data volumes the cost of maintaining such repositories and retrieving particular stored items has become prohibitive. To-day digital videos are increasingly replacing analogue material. Digital videos offer the advantage that the can be stored in distributed databases and then be transferred without loss of quality to the transmitting station. Such digital archives can be made accessible to many TV stations, thus spreading the maintenance cost. Individual stations can retrieve only the material they actually need for particular news casts. In this paper a grid architecture for distributed video archives for news broadcasts is proposed. A crucial aspect of such a grid approach is that advanced methods for retrieving data must be available. Y1 - 2005 SN - 978-0-44451999-3 SP - 333 EP - 355 PB - Elsevier ER - TY - CHAP A1 - von Wichert, Georg A1 - Klimowicz, C. A1 - Wösch, Th. A1 - Lawitzky, Gisbert A1 - Caspari, R. A1 - Heger, H.-J. A1 - Witschel, Peter A1 - Handmann, Uwe A1 - Rinne, M. A1 - Neubauer, Werner T1 - The Robotic Bar – An Integrated Demonstration of a Robotic Assistant T2 - Advances in Human-robot-Interaction N2 - Coming out of the labs, the first robots are currently appearing on the consumer market. Initially they target rather simple application scenarios ranging from entertainment to home convenience. However, one can expect, that they will capture more complex areas soon. These robots will have a higher and higher level and a broad range of functional competence, and will collaborate and interactively communicate with their human users. All this requires considerable cognitive abilities on the robot’s side and appropriate man-machine interaction technologies. Apart from further development of individual functions and technologies it is crucial to build and evaluate fully integrated systems. This paper describes our approach to construct a robotic assistance system. We present experience with an integrated technology demonstration and the exposure of the integrated system to the public. Y1 - 2004 U6 - http://dx.doi.org/https://doi.org/10.1007/978-3-540-31509-4_30 VL - 2005 IS - 14 PB - Springer Verlag Berlin CY - Heidelberg ER - TY - CHAP A1 - Schäfer, Michael T1 - Use of a multilingual CMS for the „European Waste Sector Assistant T2 - EU-Konferenz Y1 - 2005 CY - Duisburg ER - TY - CHAP A1 - Kuhn, Markus A1 - Jansen, Marc A1 - Harrer, Andreas Georg A1 - Hoppe, Ulrich T1 - A Lightweight Approach for Flexible Group Management in the Classroom T2 - Proceedings of the International Conference on Computer Supported Collaborative Learning (CSCL '05, Taipei, Taiwan, May 30 - June 4, 2005) N2 - In this paper we describe a session management system for setting up various collabora- tive classroom ,scenarios. The approach ,is addressing the additional workload ,of administrating classroom networks on the teacher, which is an important aspect for teachers' willingness to im- plement technology enhanced,learning in schools. The system facilitates preparation of classroom scenarios and the adhoc installation of networked collaborative sessions. We provided a graphical interface, which is usable for administration, monitoring, and for specification of a wide variety of different classroom ,situations with group work. The resulting graphical specifications are well suited to be re-used in the more formal learning design format IMS/LD; this is achieved by a auto- matable transformation of the scenarios to LD documents. Keywords: Collaborative classroom scenarios, lightweight classroom orchestration, learning de- sign, shared workspaces. Y1 - 2005 PB - CSCL CY - Taiwan ER - TY - CHAP A1 - Schäfer, Michael T1 - EUWAS: Erfahrungsbericht zum Einsatz von Zope/ZMS in einem EU-Projekt T2 - Deutsche Zope User Konferenz Y1 - 2006 CY - Sankt Augustin ER - TY - RPRT A1 - Schäfer, Michael T1 - Integration of public databases into the EUWAS-Portal Y1 - 2006 CY - Katowice, Poland ER - TY - THES A1 - Iossifidis, Ioannis T1 - Dynamische Systeme zur Steuerung anthropomorpher Roboterarme in autonomen Robotersystemen Y1 - 2006 PB - Bochum CY - Faculty for Physics and Astronomy, Ruhr-University Bochum ER - TY - BOOK A1 - Iossifidis, Ioannis T1 - Dynamische Systeme zur Steuerung anthropomorpher Roboterarme in autonomen Robotersystemen Y1 - 2006 N1 - Zugl. Bochum, Univ., Diss., 2006 Als Buch in der Bibliothek vorhanden: Bottrop: Signatur 10/TIH5 Mülheim: Signatur 00/TIH4 PB - Logos CY - Berlin ER - TY - CHAP A1 - Baloian, N. A1 - Pino, J. A1 - Jansen, Marc T1 - Implementing the Coupled Objects Pradigm for Synchronizing Distributed Applications Through Firewalls T2 - Proceedings of the International Conference on Computer Supported Cooperative Work in Design Y1 - 2006 CY - Nanjing, China ER - TY - BOOK A1 - Jansen, Marc T1 - Integrating Smart Devices in Java Applications Y1 - 2006 SN - 3-8-3002374-X PB - Verlag Dr. Kovac CY - Hamburg ER - TY - RPRT A1 - Schäfer, Michael T1 - Einsatz von Python zur Open Office Programmierung Y1 - 2007 PB - Paritätischer Wohlfahrtsverband NRW CY - Hagen ER - TY - RPRT A1 - Schäfer, Michael T1 - Innovative features / technology of EUWAS : Final review of the eContent project Y1 - 2007 CY - Luxemburg ER - TY - RPRT A1 - Schäfer, Michael T1 - Einsatz von Open Source Datenbanken Y1 - 2007 CY - Duisburg ER - TY - CHAP A1 - Rabie, Ahmad A1 - Lang, Christian A1 - Hanheide, Marc A1 - Castrillon-Santana, Modesto T1 - Automatic Initialization for Facial Analysis in Interactive Robotics T2 - ICVS   Y1 - 2008 CY - Santorini, Greece ER - TY - JOUR A1 - Iossifidis, Ioannis A1 - Schöner, G. T1 - Auf gute Zusammenarbeit JF - Gehirn und Geist Y1 - 2008 SN - 1618-8519 IS - 3 PB - Spektrum der Wissenschaft CY - Heidelberg ER - TY - RPRT A1 - Iossifidis, Ioannis A1 - Reimann, H. T1 - Mathematical and Simulation Framework for Arbitrary Open Chain Manipulators (IRINI 2008-03) T2 - Technical report, Institut für Neuroinformatik, Ruhr-Universitat Bochum Y1 - 2008 ER - TY - BOOK A1 - Jansen, Marc T1 - SAP-Grundlagen und Projektmanagement in SAP-Projekten Y1 - 2008 SN - 3-8-3701742-7 PB - Books on Demand ER - TY - CHAP A1 - Geisler, Stefan A1 - Müller, H. A1 - la Tendresse, I. T1 - Strukturierung der Simulation als Kontrollorgan der HMI-Spezifikation T2 - 14. Internationaler Kongress Elektronik im Kraftfahrzeug Y1 - 2009 SN - 978-3-18-092075-7 SP - 303 EP - 312 PB - VDI-Verlag ER - TY - JOUR A1 - Grimm, Matthias A. T1 - Dynamische Systeme zur Organisation und Planung von Verhalten in autonomen mobilen Robotern Y1 - 2010 ER - TY - BOOK A1 - Jansen, Marc A1 - Dinnus, Christian A1 - Ettrich, Stefan A1 - Lange, Michael T1 - Run SAP: Das umfassende Handbuch N2 - Run SAP ist die „Betriebsanleitung“ für Ihre SAP-Lösungen. Diese Methode begleitet Sie von der Planung bis zum reibungslosen Betrieb Ihrer IT-Landschaft und unterstützt Sie dabei, durchgängige Prozesse einzuführen oder existierende Prozesse an neue Anforderungen anzupassen. Y1 - 2010 PB - Galileo Press ET - 1. Auflage ER - TY - JOUR A1 - Handmann, Uwe A1 - Leefken, Iris M. A1 - Tzomakas, Christos T1 - Eine flexible Architektur für Fahrerassistenzsysteme JF - (Ruhr-Universität Bochum); Mustererkennung 1999; Springer Verlag; Berlin, Heidelberg, Germany N2 - In diesem Artikel wird eine flexible Architektur vorgestellt, mit deren Hilfe eine modulare Lösung von Fahrerassistenzaufgaben in Kraftfahrzeugen gezeigt werden kann. Es wird eine Objektbezogene Analyse von Sensordaten, eine Verhaltensbasierte Szeneninterpretation und eine Verhaltensplanung vorgestellt. Eine globale Wissensbasis, auf der jedes einzelne Modul arbeitet, beinhaltet die Beschreibung physikalischer Zusammenhänge, Verhaltensregeln für den Straßenverkehr, sowie Objekt- und Szenenwissen. Externes Wissen (z.B. GPS - Global Positioning System) kann ebenfalls in die Wissensbasis eingebunden werden. Als Anwendungsbeispiel der Verhaltensplanung wird ein intelligenter Tempomat vorgestellt. KW - Fahrerassistenzsystem KW - Architektur KW - Computer Vision Y1 - 1999 SP - 36 EP - 43 PB - Springer Verlag CY - Berlin, Heidelberg ER - TY - CHAP A1 - Handmann, Uwe A1 - Leefken, Iris M. A1 - Tzomakas, Christos T1 - A Flexible Architecture for Driver Assistance T2 - Lecture Notes in Computer Science;(Ruhr-Universität Bochum); SPIE's International Symposium on Intelligent Systems and Advanced Manufacturing; Conference "Intelligent Transportation Systems"; Boston, USA N2 - To reduce the number of traffic accidents and to increase the drivers comfort, the thought of designing driver assistance systems rose in the past years. Principal problems are caused by having a moving observer (ego motion) in predominantly natural surroundings. In this paper we present a solution for a flexible architecture for a driver assistance system. The architecture can be subdivided into four different parts: the object-related analysis, the knowledge base, the behavior-based scene interpretation, and the behavior planning unit. The object-related analysis is fed with data by the sensors (e.g., vision, radar). The sensor data are preprocessed (flexible sensor fusion) and evaluated (saliency map) searching for object-related information (positions, types of objects, etc.). The knowledge base is represented by static and dynamic knowledge. It consists of a set of rules (e.g. , traffic rules, physical laws), additional information (i.e., GPS, lane-information) and it is implicitly used by algorithms in the system. The scene interpretation combines the information extracted by the object related analysis and inspects the information for contradictions. It is strongly connected to the behavior planning using only information needed for the actual task. In the scene interpretation consistent representations (i.e., bird's eye view) are organized and interpreted as well as a scene analysis is performed. The results of the scene interpretation are used for decision making in behavior planning, which is controlled by the actual task. The influence of behavior planning on the behavior of the guided vehicle is limited to advices as no mechanical control (e.g. , control of the steering angle) was implemented. An Intelligent Cruise Control (ICC) is shown as a spin-off for using this architecture. Y1 - 1999 ER - TY - CHAP A1 - Handmann, Uwe A1 - Leefken, Iris M. A1 - von Seelen, Werner T1 - Scene Interpretation and Behavior  Planning for Driver Assistance T2 - Proceedings Volume 4023, Enhanced and Synthetic Vision 2000 N2 - The scene interpretation and the behavior planning of a vehicle in real world traffic is a difficult problem to be solved. If different hierarchies of tasks and purposes are built to structure the behavior of a driver, complex systems can be designed. But finally behavior planning in vehicles can only influence the controlled variables: steering, angle and velocity. In this paper a scene interpretation and a behavior planning for a driver assistance system aiming on cruise control is proposed. In this system the controlled variables are determined by an evaluation of the dynamics of a two-dimensional neural field for scene interpretation and two one-dimensional neural fields controlling steering angle and velocity. The stimuli of the fields are determined according to the sensor information. Y1 - 2000 U6 - http://nbn-resolving.de/urn/resolver.pl?https://doi.org/10.1117/12.389343 ER - TY - JOUR A1 - Handmann, Uwe A1 - Kalinke, Thomas A1 - Tzomakas, Christos A1 - Werner, Martin A1 - von Seelen, Werner T1 - An Image Processing System for Driver Assistance JF - (Ruhr-Universität Bochum); Image and Vision Computing 18 (5); Elsevier Science N2 - Systems for automated image analysis are useful for a variety of tasks. Their importance is still growing due to technological advances and increased social acceptance. Especially driver assistance systems have reached a high level of sophistication. Fully or partly autonomously guided vehicles, particularly for road traffic, require highly reliable algorithms due to the conditions imposed by natural environments. At the Institut fur Neuroinformatik, methods for analyzing driving relevant scenes by computer vision are developed in cooperation with several partners from the automobile industry. We present a system extracting important information from an image taken by a CCD camera installed at the rear-view mirror in a car. The approach is divided into a sequential and a parallel phase of sensor and information processing. Three main tasks, namely initial segmentation (object detection), object tracking and object classification are realized by integration in the sequential phase and by fusion in the parallel phase. The main advantage of this approach is integrative coupling of different algorithms providing partly redundant information. q 2000 Elsevier Science B.V. All rights reserved. Y1 - 2000 ER - TY - JOUR A1 - Handmann, Uwe T1 - Neuronale Informationsverarbeitung für Fahrerassistenzsysteme Y1 - 2000 PB - Logos Verlag CY - Berlin ER - TY - JOUR A1 - Schäfer, Michael T1 - Datenbanken -Überblick und Entwicklungstendenzen JF - INFORA GmbH, Essen Y1 - 2000 ER - TY - CHAP A1 - Pawlowski, Jan M. A1 - Laitinen, Jouni A. A1 - Senoo, Dai T1 - A Study On The Influence of National Culture on Knowledge Sharing T2 - Lecture Notes in Business Information Processing book series (LNBIP, volume 224) N2 - The influence of national culture on knowledge sharing has important implications for all organizations. However, the existing frameworks only cover a subset of relevant factors or limit the research of the framework to either organizational or national level. Hence, a more encompassing framework is needed. The question this articles answers is how does national culture influence knowledge sharing. Based on extensive literature review and interviews carried out in Finland and Japan, this article sets forth a foundation for a new framework. The framework details how national culture influences individual level and organizational level factors and technical tools. Additionally, the framework includes a new dimension, time-dimension, which is usually disregarded in knowledge sharing research. For researchers and practitioners, the derived framework provides key insight on relevant factors on knowledge sharing and national culture. Finally, future research directions are discussed. KW - Knowledge sharing KW - National culture KW - Intercultural sharing KW - Framework Y1 - 2015 SP - 160 EP - 175 ER - TY - JOUR A1 - Nurhas, Irawan A1 - Pawlowski, Jan M. A1 - Geisler, Stefan A1 - Kovtunenko, Maria A1 - Aditya, Bayu Rima T1 - Group-centered framework towards a positive design of digital collaboration in global settings JF - In Proceedings of the 1st international conference  on industrial, enterprise, and system engineering, Bandung, Indonesia N2 - Globally distributed groups require collaborative systems to support their work. Besides being able to support the teamwork, these systems also should promote well-being and maximize the human potential that leads to an engaging system and joyful experience. Designing such system is a significant challenge and requires a thorough understanding of group work. We used the field theory as a lens to view the essential aspects of group motivation and then utilized collaboration personas to analyze the elements of group work. We integrated well-being determinants as engagement factors to develop a group-centered framework for digital collaboration in a global setting. Based on the outcomes, we proposed a conceptual framework to design an engaging collaborative system and recommend system values that can be used to evaluate the system further. Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?https://www.researchgate.net/publication/332140077_Group-centered_framework_towards_a_positive_design_of_digital_collaboration_in_global_settings ER - TY - JOUR A1 - Voges, Veit A1 - Hommel, Sebastian A1 - Grimm, Matthias T1 - Die Richtung lässt auf das Verhalten schließen JF - SECURITYinsight Y1 - 2012 UR - http://www.easc-ev.org/files/pdf/120223_APFel_Security_Insight_Voges_et_al.pdf SP - 38 EP - 40 ER - TY - CHAP A1 - Iossifidis, Ioannis A1 - Schöner, Gregor T1 - Reaching while avoiding obstacles: a neuronally inspired attractor dynamics approach T2 - Frontiers in Computational Neuroscience Y1 - 2009 ER - TY - CHAP A1 - Hommel, Sebastian T1 - Fast people recognition with high resolute cameras at airports Y1 - 2012 ER - TY - CHAP A1 - Pirkkalainen, Henri A1 - Pawlowski, Jan A1 - Jokinen, Jussi T1 - The emerging international knowledge exchange barrier in virtual teacher communities T2 - Proceedings of the 20th International Academic Mindtrek Conference Y1 - 2016 SP - 144 EP - 152 ER - TY - CHAP A1 - Geisler, Stefan A1 - Kao, Odej T1 - Cluster-Based Organisation and Retrieval of Newsfeed Archives T2 - Proceedings of the Second International Workshop on Intelligent Multimedia Computing and Networking in conjunction with the Sixth Joint Conference on Information Sciences Y1 - 2002 SP - 1033 EP - 1036 ER - TY - GEN A1 - Schäfer, Michael T1 - Skript Praktikum der Informations- und Kommunikationssysteme, Verbundstudium Technische Betriebswirtschaft Y1 - 2002 ER - TY - CHAP A1 - Schäfer, Michael T1 - Umsetzung dynamischer Internetapplikationen mit PostgresQL und PHP Y1 - 2002 ER - TY - CHAP A1 - Schäfer, Michael T1 - Anwendung der serverseitigen Programmierung und Datenbankintegration in der Steuerung von Logistikprozessen der Entsorgungswirtschaft Y1 - 2002 ER - TY - CHAP A1 - Baloian, Nelson A1 - Frez, Jonathan A1 - Jansen, Marc A1 - Zurita, Gustavo T1 - The Future Role of HTML5 in Mobile Learning Scenarios T2 - Proceedings of the 10th World Conference on Mobile and Contextual Learning N2 - Today usually every student owns a reasonably powerful mobile device that allows to be integrated in scenarios. One of the drawbacks of the fast evolution of reasonably powerful devices, is the heterogeneity of that these kind of devices us ually bring with them. This paper provides an overview how rich mobile learning scenarios can be implemented platform independent on the basis of HTML5 and JavaScript. The paper presents a mobile learning application based on the principles of Situated Lea rning entirely developed in HTML5. The paper also presents the results of tests performed with the application which were aimed at finding out the difference in performance users perceived when compared with the native desktop version of the application and the added value that mobility introduces in learning activities. Y1 - 2011 SP - 241 EP - 249 ER - TY - CHAP A1 - Jansen, Marc A1 - Gottdenker, Josh A1 - Rossmanith, Philipp A1 - Milrad, Marcelo T1 - Exploring the Use of Web Services for the Design and Implementation of Innovative Collaborative Technologies T2 - Proceedings of the 3rd Nordic Conference on Web Services N2 - This paper presents some ideas of how to use Web Services for the implementation of innovative collaborative technologies. A major goal here is the idea to build re-usable collaborative software components to foster knowledge exchange and learning. This paper describes two examples of how we used Web Services to achieve this goal. The first example we will describe implements a digital notice board with large, public displays. Here, we used web service to provide flexible data access. Web services provide the possibility to use our infrastructure with different programming languages and devices. The second example we will present is an application that enables students to construct and model experiments descriptions using a control plant-growth system, the biotube, remotely via Web Services. Y1 - 2004 ER - TY - CHAP A1 - Eimler, Sabrina A1 - Klatt, Jennifer A1 - Krämer, Nicole T1 - Makeup your mind: The impact of styling on perceived competence and warmth of female leaders T2 - The Journal of Social Psychology N2 - Women are still underrepresented at the highest management levels. The think-manager-think-male phenomenon suggests that leadership is associated with male rather than female attributes. Although styling has been shown to influence the evaluation of women's leadership abilities, the relevant specific features have been left remarkably unaddressed. In a 2 × 2 × 2 × 2 (skirt/pants, with/without jewelry, loose hair/braid, with/without makeup) between-subjects design, 354 participants evaluated a woman in a photograph. Women with makeup, pants, or with jewelry were rated as more competent than women without makeup, with skirts, or without jewelry. A combination of loose hair and no makeup was perceived as warmest, and women with loose hair were more likely to be hired than those with braids. In sum, even subtle changes in styling have a strong impact on how women's leadership abilities are evaluated. Y1 - 2016 ER - TY - CHAP A1 - Zbick, Janosch A1 - Vogel, Bahtijar A1 - Spikol, Daniel A1 - Jansen, Marc A1 - Milrad, Marcelo T1 - Toward an Adaptive and Adaptable Architecture to Support Ubiquitous Learning Activities T2 - Mobile, Ubiquitous, and Pervasive Learning - Fundaments, Applications, and Trends N2 - The continuous evolution of learning technologies combined with the changes within ubiquitous learning environments in which they operate result in dynamic and complex requirements that are challenging to meet. The fact that these systems evolve over time makes it difficult to adapt to the constant changing requirements. Existing approaches in the field of Technology Enhanced Learning (TEL) are generally not addressing those issues and they fail to adapt to those dynamic situations. In this chapter, we investigate the notion of an adaptive and adaptable architecture as a possible solution to address these challenges. We conduct a literature survey upon the state of the art and state of practice in this area. The outcomes of those efforts result in an initial model of a Domain-specific architecture to tackle the issues of adaptability and adaptiveness. To illustrate these ideas, we provide a number of scenarios where this architecture can be applied or is already applied. Our proposed approach serves as a foundation for addressing future ubiquitous learning applications where new technologies constantly emerge and new requirements evolve. Y1 - 2015 ER - TY - CHAP A1 - Sotsenko, Alisa A1 - Zbick, Janosch A1 - Jansen, Marc A1 - Milrad, Marcelo T1 - Flexible and Contextualized Cloud Applications for Mobile Learning Scenarios T2 - Mobile, Ubiquitous, and Pervasive Learning - Fundaments, Applications, and Trends N2 - This chapter describes our research efforts related to the design of mobile learning (m-learning) applications in cloud-computing (CC) environments. Many cloud-based services can be used/integrated in m-learning scenarios, hence, there is a rich source of applications that could easily be applied to design and deploy those within the context of cloud-based services. Here, we present two cloud-based approaches—a flexible framework for an easy generation and deployment of mobile learning applications for teachers, and a flexible contextualization service to support personalized learning environment for mobile learners. The framework provides a flexible approach that supports teachers in designing mobile applications and automatically deploys those in order to allow teachers to create their own m-learning activities supported by mobile devices. The contextualization service is proposed to improve the content delivery of learning objects (LOs). This service allows adapting the learning content and the mobile user interface (UI) to the current context of the user. Together, this leads to a powerful and flexible framework for the provisioning of potentially ad hoc mobile learning scenarios. We provide a description of the design and implementation of two proposed cloud-based approaches together with scenario examples. Furthermore, we discuss the benefits of using flexible and contextualized cloud applications in mobile learning scenarios. Hereby, we contribute to this growing field of research by exploring new ways for designing and using flexible and contextualized cloud-based applications that support m-learning. Y1 - 2015 ER - TY - CHAP A1 - Hoffmann, Stefan A1 - Markard, Markus A1 - Jansen, Marc A1 - Bumiller, Gerd A1 - Detjen, Henrik A1 - Geisler, Stefan T1 - Technological Feasibility of a Smartphone-based System to Integrate Volunteers into Professional Rescue Processes T2 - Proceedings of the ninth International Conference on Collaboration Technologies Y1 - 2017 ER - TY - CHAP A1 - Detjen, Henrik A1 - Hoffmann, Stefan A1 - Bumiller, Gerd A1 - Geisler, Stefan A1 - Jansen, Marc A1 - Markard, Markus T1 - Anonymity-preserving Methods for Client-side Filtering in Position-based Collaboration Approaches T2 - Proceedings of the ninth International Conference on Collaboration Technologies Y1 - 2017 ER - TY - CHAP A1 - Eimler, Sabrina A1 - Winter, Stephan T1 - Impression Management und Self-Disclosure in sozialen Medien T2 - Medienpyschologie: Schlüsselbegriffe und Konzepte Y1 - 2016 PB - Kohlhammer CY - Stuttgart ET - 2. Auflage ER - TY - JOUR A1 - Jansen, Marc A1 - Wenzel, B. T1 - Klein, aber fein - Microservice Architektur mit Docker und Kubernetes JF - Java Spektrum Y1 - 2016 SN - 1431-4436 VL - 2016 IS - 1 ER - TY - CHAP A1 - Jansen, Marc T1 - Increasing Security of Nodes of a Blockchain by Simple Web Application Firewalls T2 - ICIW 2017 : The Twelfth International Conference on Internet and Web Applications and Services N2 - In recent times, a lot of attacks against central server infrastructures have been recognized. Those infrastructures have seen attacks ranging from attacks against Internt of Things (IoT) infrastructures, via attacks against public infrastructure to attacks against cryptocurrency exchanges and blockchain based infrastructures themselves, e.g., the already almost legendary Decentralized Autonomous Organization (DAO) hack. Measured by press coverage, attacks against cryptocurrency exchanges and infrastructures seem to be among the most prominently reported attacks, probably due to the large amount of money that is stolen during those attacks and the great (but obviously still quite risky) potential (and financial involvement) of the blockchain technology. Naturally, attacks like the ones we have seen recently in crease the notion of uncertainty of blockchain technologies among the people,mreflected in lower values of cryptocurrencies in general. Obviously, this demands for an overall increase of security of cryptocurrency based technologies. Therefore, this paper provides an architectural approach, based on a proxy,to increase security of publicly available nodes of a blockchain based technology. Furthermore, it provides a first evaluation of the approach based on the results of an extensive community test of a new cryptocurrency. Y1 - 2017 UR - https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=2ahUKEwjVwuHcxqThAhXGhrQKHWKmD1kQFjAAegQIARAC&url=https%3A%2F%2Fwww.thinkmind.org%2Fdownload.php%3Farticleid%3Diciw_2017_4_20_20041&usg=AOvVaw2aZx8ZCPLotPELz5tICKik SN - 978-1-61208-563-0 SP - 48 EP - 51 ER - TY - CHAP A1 - Jansen, Marc A1 - Bollen, Lars A1 - Schäfer, Michael T1 - Integrating Social Networking Sites in Day-to-Day Learning Scenarios - A Facebook Based Approach T2 - Proceedings International Conference on Education & E-Learning Innovations (ICEELI 2012) N2 - In recent years, the number of users in social networking sites regularly increased. Especially younger people spend a tremendous time on social networking sites like Facebook, YouTube, Flickr, Google+ and many more. Since obviously this is the place on the World-Wide-Web where our students spent their spare time, we integrated social networking sites in our day-to-day learning scenarios. This is on the one hand to start working with our students where they feel comfortable, and on the other hand to allow to foster the communication among our students about the topic of the lectures. Y1 - 2012 UR - https://ieeexplore.ieee.org/abstract/document/6360598 SN - 978-1-4673-2225-6 U6 - http://dx.doi.org/doi.org/10.1109/ICEELI.2012.6360598 PB - IEEE CY - Sousse, Tunisia ER - TY - JOUR A1 - Zibner, Stephan K. A1 - Faubel, Christian A1 - Iossifidis, Ioannis A1 - Schöner, Gregor T1 - Scene Representation Based on Dynamic Field Theory: From Human to Machine JF - Frontiers in Computational Neuroscience Y1 - 2010 U6 - http://dx.doi.org/10.3389/conf.fncom.2010.51.00019 ER - TY - CHAP A1 - Wolfgang, Irrek T1 - Financing Nuclear Decommissioning T2 - The Technological and Economic Future of Nuclear Power N2 - While more and more nuclear installations facing the end of their lifetime, decommissioning financing issues gain importance in political discussions. The financing needs are huge along the Uranium value chain. Following the polluter pays principle the operator of a nuclear installation is expected to accumulate all the necessary decommissioning funds during the operating life of its facility. However, since decommissioning experience is still limited, since the decommissioning process can take several decades and since the time period between the shutdown of a nuclear installation and the final disposal of radioactive waste can be very long, there are substantial risks that costs will be underestimated and that the liable party and the funds accumulated might not be available anymore when decommissioning activities have to be paid. Nevertheless, these financing risks can be reduced by the implementation of transparent, restricted, well-governed decommissioning financing schemes, with a system of checks and balances that aims at avoiding negative effects stemming from conflicts of interests. Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:1393-opus4-2930 UR - https://link.springer.com/book/10.1007%2F978-3-658-25987-7#about SP - 139 EP - 166 PB - Springer VS CY - Wiesbaden ER - TY - JOUR A1 - Jansen, Marc A1 - Aretz, Marcus T1 - Integration der SAP-Welt in die bei IT.NRW bestehenden Strukturen JF - LDVZ-Nachrichten Y1 - 2010 UR - https://webshop.it.nrw.de/gratis/Z099%20201051.pdf SN - 1616-377X VL - 2010 IS - 1 SP - 16 EP - 18 ER - TY - CHAP A1 - Friedrich, Horst A1 - Glachs, Dietmar A1 - Moebs, Sabine A1 - Pawlowski, Jan A1 - Ras, Eric A1 - Schilling, Peter A1 - Schmeling, Juliane A1 - Steffens, Petra A1 - Stoffregen, Julia A1 - Trapp, Sonja A1 - Vallogia, Philippe T1 - Wissenserwerb als Teil der "Produktumgebung Wissensmanagement" in der ÖV T2 - Proceedings of proWM2017, Karlsruhe, Germany N2 - Wissensmanagement (WM) und IT-gestütztes Lernen sind gerade in kleinen Behörden der Öffentlichen Verwaltung (ÖV), wie z.B. in ländlichen Gemeinden, noch ausbaufähig. Am Beispiel des EU-Projekts EAGLE werden Projektergebnisse als Verbesserungsansätze für ein arbeitsprozessorientiertes, IT-gestütztes Lernen vorgestellt. Neuartige Plattform-Features und ihr ÖV-spezifischer Nutzen werden erläutert. Die Ergebnisse der Plattformvalidierung werden vorgestellt. Ferner werden Vorschläge gemacht, wie die Ergebnisse aus EAGLE mit WM und weiteren Wissensquellen der ÖV, wie z.B. der Registratur, zu einem Gesamtkonzept mit bereits vorhandenen Fortbildungs- und WM-Ansätzen verbunden werden können. KW - Wissensmanagement Y1 - 2017 UR - http://ceur-ws.org/Vol-1821/W5_paper2.pdf SP - 151 EP - 166 ER - TY - JOUR A1 - Jansen, Marc A1 - Ertmer, H. A1 - Aretz, M. T1 - Run SAP - Die ITIL Implementierung der SAP JF - LDVZ Nachrichten Y1 - 2010 UR - https://webshop.it.nrw.de/gratis/Z099%20201051.pdf SN - 1616-377X VL - 2010 IS - 1 SP - 19 EP - 24 ER - TY - JOUR A1 - Qasem, Ziyaad A1 - Bons, Julia A1 - Borgmann, Colja A1 - Eimler, Sabrina A1 - Jansen, Marc T1 - Dynamic, Adaptive, and Mobile System for Context- Based and Intelligent Support of Employees in Heavy Industry N2 - 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. Y1 - 2018 UR - https://ieeexplore.ieee.org/abstract/document/8588263 ER - TY - THES A1 - Dastjerdi, Maral Heidary ED - Kanoun, Olfa T1 - Ein Beitrag zur Verbesserung der Eigenschaften magnetisch-induktiver Tastspulen, (Ph.D. thesis), Technische Universität Chemnitz T2 - Scientific Reports on Measurement and Sensor Technology, Volume 2 N2 - Magnetisch-induktive Techniken finden seit langer Zeit viele Anwendungsfelder in der Medizin, Sicherheitstechnik und der Industrie. Obwohl die technischen Grundlagen seit vielen Jahrzehnten bekannt sind, werden auf Basis detaillierter Analysen spezielle Lösungsansätze verfolgt, die neuartiges Anwendungspotential erschließen sollen. Dazu dienen verbesserte Werkzeuge wie Computersimulationen und analytische Berechnungen sowie neu kombinierte Methoden und Aufbauten aus Leistungselektronik und Signaldetektion. Die Vorteile magnetisch-induktiver Techniken sind dabei u.a., dass sie das Prüfobjekt nicht schädigen, berührungslos arbeiten, robust gegenüber Verschmutzungen und einfach im Aufbau sind. Ein Nachteil dieser Technik ist die unzureichende Auflösung von feinen Strukturen. In der aktuellen Forschung und Entwicklung werden unterschiedliche Spulenanordnungen zur Anwendung in industriellen und medizinischen Fragestellungen untersucht und optimiert. Thema dieser Arbeit ist es, durch Verbesserung der Spuleneigenschaften, neue Anwendungsbereiche für die zerstörungsfreie Materialprüfung zu erschließen. Es wird eine Methode vorgestellt, die Eigenschaften magnetisch-induktiver Tastspulen zu verbessern und so den Aufwand bei der Signalverarbeitung zur Rekonstruktion im Rechner zu reduzieren sowie die Auflösung zu erhöhen. Dazu werden zwei Spulenanordnungen, Transmissions -Tastspulen und Gradiometer - Tastspulen, vergleichend gegenübergestellt und ihre technischen Grenzen aufgezeigt. KW - Induktive Messsysteme KW - zerstörungsfreie Materialprüfung KW - Gewebediagnostik KW - nduktive Messsysteme, Gradiometmaterial- spezifische elektrische Eigenschaften Y1 - 2016 PB - Universitätsverlag Chemnitz CY - Chemnitz ER - TY - CHAP A1 - Jansen, Marc T1 - Increasing Security of Nodes of a Blockchain by Simple Web Application Firewalls T2 - Proceedings of The Twelfth International Conference on Internet and Web Applications and Services N2 - In recent times, a lot of attacks against central server infrastructures have been recognized. Those infrastructures have seen attacks ranging from attacks against Internt of Things (IoT) infrastructures, via attacks against public infrastructure to attacks against cryptocurrency exchanges and blockchain based infrastructures themselves, e.g., the already almost legendary Decentralized Autonomous Organization (DAO) hack. Measured by press coverage, attacks against cryptocurrency exchanges and infrastructures seem to be among the most prominently reported attacks, probably due to the large amount of money that is stolen during those attacks and the great (but obviously still quite risky) potential (and financial involvement) of the blockchain technology. Naturally, attacks like the ones we have seen recently increase the notion of uncertainty of blockchain technologies among the people, reflected in lower values of cryptocurrencies in general. Obviously, this demands for an overall increase of security of cryptocurrency based technologies. Therefore, this paper provides an architectural approach, based on a proxy, to increase security of publicly available nodes of a blockchain based technology. Furthermore, it provides a first evaluation of the approach based on the results of an extensive community test of a new cryptocurrency. Y1 - 2017 UR - www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=2ahUKEwjVwuHcxqThAhXGhrQKHWKmD1kQFjAAegQIARAC&url=https%3A%2F%2Fwww.thinkmind.org%2Fdownload.php%3Farticleid%3Diciw_2017_4_20_20041&usg=AOvVaw2aZx8ZCPLotPELz5tICKik SP - 48 EP - 51 ER - TY - CHAP A1 - Noth, Sebastian A1 - Iossifidis, Ioannis T1 - Simulated reality environment for development and assessment of cognitive robotic systems T2 - 2011 IEEE International Conference on Robotics and Biomimetics N2 - Simulated reality environment incorporating humans and physically plausible behaving robots, providing natural interaction channels, with the option to link simulator to real perception and motion, is gaining importance for the development of cognitive, intuitive interacting and collaborating robotic systems. In the present work we introduce a head tracking system which is utilized to incorporate human ego motion in simulated environment improving immersion in the context of human-robot collaborative tasks. Y1 - 2011 ER - TY - CHAP A1 - Iossifidis, Ioannis A1 - Malysiak, Darius A1 - Reimann, Hendrik T1 - Model-free local navigation for humanoid robots N2 - Autonomous robots with limited computational capacity call for control approaches that generate meaningful, goal-directed behavior without using a large amount of resources. The attractor dynamics approach to movement generation is a framework that links sensor data to motor commands via coupled dynamical systems that have attractors at behaviorally desired states. The low computational demands leave enough system resources for higher level function like forming a sequence of local goals to reach a distant one. The comparatively high performance of local behavior generation allows the global planning to be relatively simple. In the present paper, we apply this approach to generate walking trajectories for a small humanoid robot, the Aldebaran Nao, that are goal-directed and avoid obstacles. The sensor information is a single camera in the head of the robot. The limited field of vision is compensated by head movements. The design of the dynamical system for motion generation and the choice of state variable makes a computationally expensive scene representation or local map building unnecessary. Y1 - 2011 ER - TY - CHAP A1 - Dogan, Ürün A1 - Edelbrunner, Johann A1 - Iossifidis, Ioannis T1 - Autonomous Driving: A Comparison of Machine Learning Techniques by Means of the Prediction of Lane Change Behavior T2 - 2011 IEEE International Conference on Robotics and Biomimetics, 7-11 Dec. 2011 N2 - In the presented work we compare machine learning techniques in the context of lane change behavior performed by humans in a semi-naturalistic simulated environment. We evaluate different learning approaches using differing feature combinations in order to identify appropriate feature, best feature combination, and the most appropriate machine learning technique for the described task. Based on the data acquired from human drivers in the traffic simulator NISYS TRS 1 , we trained a recurrent neural network, a feed forward neural network and a set of support vector machines. In the followed test drives the system was able to predict lane changes up to 1.5 sec in beforehand. Y1 - 2011 UR - ieeexplore.ieee.org/abstract/document/6181557 ER - TY - CHAP A1 - Malysiak, Darius A1 - Römhild, Anna-Katharina A1 - Nieß, Christoph A1 - Handmann, Uwe T1 - Boosting detection results of hog-based algorithms through non-linear metrics and roi fusion T2 - Asian Conference on Intelligent Information and Database Systems N2 - Practical application of object detection systems, in research or industry, favors highly optimized black box solutions. We show how such a highly optimized system can be further augmented in terms of its reliability with only a minimal increase of computation times, i.e. preserving realtime boundaries. Our solution leaves the initial (HOG-based) detector unchanged and introduces novel concepts of non-linear metrics and fusion of ROIs. In this context we also introduce a novel way of combining feature vectors for mean-shift grouping. We evaluate our approach on a standarized image database with a HOG detector, which is representative for practical applications. Our results show that the amount of false-positive detections can be reduced by a factor of 4 with a negligable complexity increase. Although introduced and applied to a HOG-based system, our approach can easily be adapted for different detectors. Y1 - 2017 SN - 9783319544717 U6 - http://dx.doi.org/DOI https://doi.org/10.1007/978-3-319-54472-4_54 SP - 577 EP - 588 PB - Springer ER - TY - JOUR A1 - Meshkov, Dmitry A1 - Chepurnoy, Alexander A1 - Jansen, Marc T1 - Revisiting Difficulty Control for Blockchain Systems N2 - The Bitcoin whitepaper states that security of the system is guaranteed as long as honest miners control more than half of the current total computational power. The whitepaper assumes a static difficulty, thus it is equally hard to solve a cryptographic proof-of-work puzzle for any given moment of the system history. However, the real Bitcoin network is using an adaptive difficulty adjustment mechanism. In this paper we introduce and analyze a new kind of attack on a mining difficulty retargeting function used in Bitcoin. A malicious miner is increasing his mining profits from the attack, named coin-hopping attack, and, as a side effect, an average delay between blocks is increasing. We propose an alternative difficulty adjustment algorithm in order to reduce an incentive to perform coin-hopping, and also to improve stability of inter-block delays. Finally, we evaluate the presented approach and show that the novel algorithm performs better than the original algorithm of Bitcoin. Y1 - 2017 UR - https://eprint.iacr.org/2017/731.pdf ER - TY - GEN A1 - Handmann, U. T1 - Informatik und autonomes Fahren - Brauchen wir in der Zukunft noch einen Führerschein? T2 - Tage der Studienorientierung. Hochschule Ruhr West, Bottrop Y1 - 2017 ER - TY - CHAP A1 - Günther, Liane A1 - Osterhoff, Anke A1 - Thiel, Christian A1 - Sommer, Sascha A1 - Niehoff, M. A1 - Sharma, M. A1 - Handmann, Uwe A1 - Koch, Oliver A1 - Grüneberg, Christian T1 - "Quartier Agil" - Feasibility of Combined Physical and Cognitive Activities in the Community /Neighbourhood with Smartphone Support for Stimulating Social Participation in the Elderly. Y1 - 2017 ER -