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First year Business Administration students tend to regard themselves as “non-computer scientists” and often have a lack of motivation about taking IT courses in general, either because they perceive them as too technical, too difficult or somewhat irrelevant. In an attempt to counteract this perception and increase the levels of engagement and willing attendance to class, we decided to flip the traditional lecture model and develop a new teaching and learning approach for the IT Fundamentals course using an open source Enterprise Resource Planning (ERP) system as the platform from which to draw the various underlying IT concepts and through which the relevant competences can be acquired.
This paper describes the implementation process of this new contextualized learning framework “IT via ERP” and the changes in the didactical methods to support it.
Diese Fallstudien sind im Rahmen der Vorlesung "Integrationsseminar" von Bachelorstudenten/-innen des 5. Semesters an der DHBW Mannheim erarbeitet worden. Es handelt sich bei diesen Fallstudien ausschließlich um Unternehmen, die einen Onlinehandel betreiben. Jede Fallstudie beginnt mit der Beschreibung des Beispielunternehmens, deren Entwicklung und Ausrichtung. Anschließend werden die Marktsituation, sowie die Stärken und Schwächen dargestellt. Die Handlungsempfehlung und das Fazit fassen die Schwerpunkte zusammen und die abschließenden Arbeitsfragen können für eine weitere Bearbeitung verwendet werden.
3D Bin Picking with an innovative powder filled gripper and a torque controlled collaborative robot
(2023)
A new and innovative powder filled gripper concept will be introduced to a process to pick parts out of a box without the use of a camera system which guides the robot to the part. The gripper is a combination of an inflatable skin, and a powder inside. In the unjammed condition, the powder is soft and can adjust to the geometry of the part which will be handled. By applying a vacuum to the inflatable skin, the powder gets jammed and transforms to a solid shaped form in which the gripper was brought before applying the vacuum. This physical principle is used to pick parts. The flexible skin of the gripper adjusts to all kinds of shapes, and therefore, can be used to realize 3D bin picking. With the help of a force controlled robot, the gripper can be pushed with a consistent force on flexible positions depending of the filling level of the box. A Kuka LBR iiwa with joint torque sensors in all of its seven axis’ was used to achieve a constant contact pressure. This is the basic criteria to achieve a robust picking process.
Dieser Beitrag stellt die Möglichkeiten des 3D-Druckes unter der Berücksichtigung von Mensch-Roboter-Kollaborations-Anforderungen dar. Dabei werden die Vorteile mit besonderem Fokus auf die zusätzliche Gestaltungsfreiheit erläutert. Anhand von Beispielen wird der Stand der Technik bereits eingesetzter Sensorik sowie deren Notwendigkeit in Greifsystemen erläutert. Im weiteren Verlauf dieses Beitrags werden allgemeine Verfahren für die additive Verarbeitung von leitfähigen Materialien vorgestellt. Daran angeknüpft sind Beispiele speziell zur 3D-gedruckten Sensorik. Abgerundet wird der Beitrag mit einem Ausblick bezüglich 3D-gedruckter Sensorik in MRK-Greifsystemen.
In 4D printing, an additively manufactured component is given the ability to change its shape or function in an intended and useful manner over time. The technology of 4D printing is still in an early stage of development. Nevertheless, interesting research and initial applications exist in the literature. In this work, a novel methodical approach is presented that helps transfer existing 4D printing research results and knowledge into solving application tasks systematically. Moreover, two different smart materials are analyzed, used, and combined following the presented methodical approach to solving the given task in the form of recovering an object from a poorly accessible space. This is implemented by self-positioning, grabbing, and extracting the target object. The first smart material used to realize these tasks is a shape-memory polymer, while the second is a polymer-based magnetic composite. In addition to the presentation and detailed implementation of the methodical approach, the potentials and behavior of the two smart materials are further examined and narrowed down as a result of the investigation. The results show that the developed methodical approach contributes to moving 4D printing closer toward a viable alternative to existing technologies due to its problem-oriented nature.
Diese Fallstudien sind im Rahmen der Vorlesung "Integrationsseminar" von Bachelorstudenten/-innen des 5. Semesters an der DHBW Mannheim erarbeitet worden.Es handelt sich bei diesen Fallstudien ausschließlich um Unternehmen, die einen Onlinehandel betreiben.Jede Fallstudie beginnt mit der Beschreibung des Beispielunternehmens, deren Entwicklung und Ausrichtung. Anschließend werden die Marktsituation, sowie die Stärken und Schwächen dargestellt. Das Fazit und eine Handlungsempfehlung fassen die Schwerpunkte zusammen und die abschließenden Arbeitsfragen können für eine weitere Bearbeitung verwendet werden.