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Ein virtuelles Kraftwerk ist ein Verbund von Energieanlagen, koordiniert von einem gemeinsamen Leitsystem, um eine bessere Ausnutzung wetterabhängiger Energiequellen oder die gemeinsame Vermarktung von erzeugtem Strom zu ermöglichen. Der Demonstrator Virtuelles Kraftwerk Neckar-Alb ist eine Demonstrationsplattform für Forschung und Lehre, die Anlagen auf dem Campus der Hochschule Reutlingen und verteilte Anlagen in der Region Neckar-Alb integriert.
The field of additive manufacturing has experienced an incredible surge over the last few years. Affordable end-user printers, which open a wide variety of new production opportunities, have spread throughout the so called "maker community", while overblown reports about the possibilities on offer have whipped up a real hype. Although new ways of making products have now become available, what can actually be achieved often lags behind people's expectations. On the one hand, this is down to component quality and the materials being used, while on the other hand, most printers found in the end-user sphere use the FDM or DLP process, which significantly restricts the printing methods that can be utilized.
This book covers the fundamental knowledge of layout design from the ground up, addressing both physical design, as generally applied to digital circuits, and analog layout. Such knowledge provides the critical awareness and insights a layout designer must possess to convert a structural description produced during circuit design into the physical layout used for IC/PCB fabrication.
Novel design for a coreless printed circuit board transformer realizing high bandwidth and coupling
(2019)
Rogowski coils offer galvanic isolation and can measure alternating currents with a high bandwidth. Coreless printed circuit board (PCB) transformers have been used as an alternative to limit the additional stray inductance if a Rogowski coil can not be attached to the circuit. A new PCB transformer layout is proposed to reduce cost, decrease additional stray inductance, increase the bandwidth of current measurements and simplify the integration into existing designs.
Improved inductive feed-forward for fast turn-on of power semiconductors during hard switching
(2019)
A transformer is used to increase the gate voltage during turn-on, thus reducing the necessary bias voltage of the gate driver. Counteracting the voltage dependency of the gate capacitance of high-voltage power devices, faster transitions are possible. The additional transformer only slighly increases the over-voltage during turn-off.
In this paper, an approach is introduced how reinforcement learning can be used to achieve interoperability between heterogeneous Internet of Things (IoT) components. More specifically, we model an HTTP REST service as a Markov Decision Process and adapt Q-Learning to the properties of REST so that an agent in the role of an HTTP REST client can learn the semantics of the service and, especially an optimal sequence of service calls to achieve an application specific goal. With our approach, we want to open up and facilitate a discussion in the community, as we see the key for achieving interoperability in IoT by the utilization of artificial intelligence techniques.
Interoperability is an important topic in the Internet of Things (IoT), because this domain incorporates diverse and heterogeneous objects, communication protocols and data formats. Many models and classification schemes have been proposed to make the degree of interoperability measurable - however only on the basis of a hierarchical scale. In the course of this paper we introduce a novel approach to measure the degree of interoperability using a metric scaled quantity. We consider IoT as a distributed system, where interoperable objects exchange messages with each other. Under this premise, we interpret messages as operation calls and formalize this view as a causal model. The analysis of this model enables us to quantify the interoperable behavior of communicating objects.
Obwohl eSports bereits seit mehr als zwanzig Jahren professionell betrieben wird, sind große Teile der Öffentlichkeit immer noch sehr wenig mit eSports vertraut. Im vorliegenden Beitrag werden die grundlegenden Aspekte rund um eSports erläutert. Gewaltverherrlichung unter Jugendlichen oder negative gesundheitliche Auswirkungen sind Beispiele von Diskussionen, derer sich eSports ausgesetzt sehen. Auch die kontrovers geführte Debatte um die Einbindung von eSports in die Olympischen Spiele verdeutlicht den Bedarf nach mehr Hintergrundwissen über eSports.