Fraunhofer-Publica
The Fraunhofer-Publica has been successfully documenting the research results of the Fraunhofer-Gesellschaft for over 30 years. The platform enables the collaborative linking of research-relevant objects and disseminates within the international scientific community.
The Fraunhofer-Publica thus fulfils its responsibility to promote the transfer of knowledge and know-how to industry and society.
Categories
Research outputs
As an application-oriented research organisation, Fraunhofer aims to conduct highly innovative and solution-oriented research - for the benefit of society and to strengthen the German and European economy.
Projects
Fraunhofer is tackling the current challenges facing industry head on. By pooling their expertise and involving industrial partners at an early stage, the Fraunhofer Institutes involved in the projects aim to turn original scientific ideas into marketable products as quickly as possible.
Researchers
Scientific achievement and practical relevance are not opposites - at Fraunhofer they are mutually dependent. Thanks to the close organisational links between Fraunhofer Institutes and universities, science at Fraunhofer is conducted at an internationally first-class level.
Institutes
The Fraunhofer-Gesellschaft is the leading organisation for applied research in Europe. Institutes and research facilities work under its umbrella at various locations throughout Germany.
Recent Additions
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PublicationEin Ansatz zur Initiierung proaktiver Dialoge von Sprachassistenten im Fahrzeug( 2024)Die Vision zukünftiger Sprachassistenten im Fahrzeug vermittelt das Bild eines digitalen Begleiters, der mit Nutzenden proaktiv interagiert. Um die Nutzerakzeptanz für proaktives Verhalten von Sprachassistenten sicherzustellen, müssen verschiedene Einflussfaktoren für die Wahl des Zeitpunkts und Inhalts der Ansprache betrachtet werden. Ziel dieses Dissertationsprojekts ist es, einen Ansatz zu entwickeln, der proaktives Verhalten von Sprachassistenten im automatisierten Fahrzeug zu einem geeigneten Zeitpunkt mit relevanten Inhalten auslöst. Dabei wird ein hybrider Ansatz verfolgt, der sowohl wissensbasierte Strukturen für das Entscheidungsverhalten verwendet als auch auf die Generierung natürlicher Sprache durch ein großes Sprachmodell zurückgreift. Um die Akzeptanz der Ansprachen aus Nutzersicht sowie die Anwendbarkeit des Ansatzes in der Praxis sicherzustellen, ist eine Validierung mit Nutzenden und einem Entwicklungsteam geplant.
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PublicationNachhaltiger Umgang mit dem Wald als Quelle für Wohlbefinden, Resilienz und Kreativität( 2024)Naturerleben im Arbeitsalltag stellt eine wesentliche Quelle für Wohlbefinden und Resilienz dar. Gerade der stadtnahe Wald kann für Menschen aus urbanen Gebieten ein wesentlicher Gegenpol zum digitalen Alltag sein. Das aktuelle Waldsterben zeigt auf, dass nachhaltiges Handeln immer wichtiger wird, damit diese Quelle für Resilienz und Wohlbefinden langfristig erhalten bleiben kann. Aus Bequemlichkeit, hartnäckigen Gewohnheiten, Wissenslücken oder wirtschaftlichen Interessen handeln viele Menschen jedoch meist eher nachhaltigkeitswidrig. Im Rahmen des Kurzbeitrags wird ein Workshopformat vorgestellt, welcher Menschen für den Wald als Quelle für Wohlbefinden und Resilienz sensibilisieren soll. Darüber soll der Workshop dazu dienen im positiven Sinne motivierenden Ideen zu entwickeln, wie Menschen bewegt werden können, nachhaltig mit dem Wald und der Natur im Allgemeinen umzugehen. Zuletzt werden im Rahmen des vorliegenden Beitrags erste Erkenntnisse aus bisherigen Durchführungen des Workshopformats sowie Ansätze für zukünftige Forschungsarbeiten vorgestellt.
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PublicationHierarchical Clock Synchronization in MPI( 2018)MPI benchmarks are used for analyzing or tuning the performance of MPI libraries. Generally, every MPI library should be adjusted to the given parallel machine, especially on supercomputers. System operators can define which algorithm should be selected for a specific MPI operation, and this decision which algorithm to select is usually made after analyzing bench-mark results. The problem is that the latency of communication operations in MPI is very sensitive to the chosen data acquisition and data processing method. For that reason, depending on how the performance is measured, system operators may end up with a completely different MPI library setup. In the present work, we focus on the problem of precisely measuring the latency of collective operations, in particular, for small payloads, where external experimental factors play a significant role. We present a novel clock synchronization algorithm, which exploits the hierarchical architecture of compute clusters, and we show that it outperforms previous approaches, both in run-time and in precision. We also propose a different scheme to obtain precise MPI run-time measurements (called Round-Time), which is based on given, fixed time slices, as opposed to the traditional way of measuring for a predefined number of repetitions. We also highlight that the use of MPI_Barrier has a significant effect on experimentally determined latency values of MPI collectives. We argue that MPI_Barrier should be avoided if the average run-time of the barrier function is in the same order of magnitude as the run-time of the MPI function to be measured.
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PublicationCharacterization of self-cleaning properties on superhydrophobic aluminum surfaces fabricated by direct laser writing and direct laser interference patterning( 2020)Self-cleaning ability on technical surfaces can increase the added value of a product. A common path to achieve this property is making the surface superhydrophobic so that water droplets can roll down, picking up dirt particles. In this contribution, the self-cleaning efficiency of Al surfaces structured with direct laser writing (DLW), direct laser interference patterning (DLIP) and a combination of both technologies was quantitatively determined. This was performed by developing a characterization method, where the treated samples are firstly covered with either MnO2 or polyamide micro-particles, then tilted by 15° and 30° and finally washed applying up to nine water droplets (10 µl) over the contaminated surfaces. Then, an optical analysis by image processing of the remaining contamination particles on the textured surfaces was realized after each droplet rolled over the surface. The DLIP textures showed the best performance, allowing the removal of more than 90% of the particles after just three droplets were released. High-speed videos and scanning electron microscopy characterization allowed a deeper understanding on the cleaning behavior and on the relationship between surface microstructure and particle size and shape.