Filters (1)
Filters

Fraunhofer-ePrints

Filters

Fraunhofer-ePrints

Download Results
238,532 research outcomes, page 1 of 23,854
  • publication . Conference object . 2020
    Subcell Development for Wafer-Bonded III-V//Si Tandem Solar Cells
    Open Access
    Authors:
    Patrick Schygulla; Friedemann D. Heinz; David Lackner; Frank Dimroth;
    Persistent Identifiers

    doi: 10.1109/pvsc45281.2020.9300801

    Publisher: IEEE
    Country: Germany

    This work focuses on the material properties of two III-V semiconductors, AlGaAs and GaInAsP, and their usage as middle cell absorber materials in a wafer-bonded III-V//Si triple-junction solar cell. To this end single-junction solar cells were grown epitaxially lattice...

    Add to ORCIDorcid
  • publication . Article . 2005
    Magnetic Barkhausen emission to evaluate fatigue damage in a low carbon structural steel
    Open Access
    Authors:
    Sagar, S.; Parida, N.; Das, S.; Dobmann, G.; Bhattacharya, D.;
    Persistent Identifiers

    doi: 10.1016/j.ijfatigue.2004.06.015

    Publisher: Elsevier BV
    Country: Germany

    The various stages of fatigue damage in low carbon structural steel have been characterized using magnetic Barkhausen emission (MBE) signal analysis technique during high cycle fatiguing. The observed trends in the variation in MBE peak voltage showed an initial increas...

    Add to ORCIDorcid
  • publication . Conference object . 2002
    Data Placement Scheme on Continuous Media Servers with ZBR Disks
    Open Access English
    Authors:
    Shunnian Zhai; T.K.Y. Chan;
    Persistent Identifiers

    doi: 10.1109/itcc.2000.844238

    Country: Germany

    Recent advances in computer technologies have made it feasible to provide multimedia services. As a result, the research and development of continuous media servers has received more attention in recent years. In general, these servers consist of multiple zone-bit recor...

    Add to ORCIDorcid
  • publication . Conference object . 2004
    Protected transmission of biometric user authentication data for oncard-matching
    Open Access English
    Authors:
    Ulrich Waldmann; Dirk Scheuermann; Claudia Eckert;
    Persistent Identifiers

    doi: 10.1145/967900.967990

    Country: Germany

    Since fingerprint data are no secrets but of public nature, the verification data transmitted to a smartcard for oncard-matching need protection by appropriate means in order to assure data origin in the biometric sensor and to prevent bypassing the sensor. For this pur...

    Add to ORCIDorcid
  • publication . Article . 2007
    Nachhaltige Produktion durch flexible Automatisierung
    Open Access German
    Authors:
    Jörg Krüger;
    Persistent Identifiers

    doi: 10.3139/104.070604

    Country: Germany
    Add to ORCIDorcid
  • publication . Conference object . Part of book or chapter of book . 2020
    Adequate Mathematical Beam-Column Model for Active Buckling Control in a Tetrahedron Truss Structure
    Open Access
    Authors:
    Maximilian Schaeffner; Roland Platz; Tobias Melz;
    Persistent Identifiers

    doi: 10.1007/978-3-030-47638-0_35

    Publisher: Springer International Publishing
    Country: Germany

    Active buckling control of compressively loaded beam-columns provides a possibility to increase the maximum bearable axial load compared to passive beam-columns. Reliable mathematical beam-column models that adequately describe the lateral dynamic behavior are required ...

    Add to ORCIDorcid
  • publication . Article . 2004
    The influence of flattening on the adhesion of particles
    Open Access English
    Authors:
    Barton Dahneke;
    Persistent Identifiers

    doi: 10.1016/0021-9797(72)90168-3

    Country: Germany

    Abstract The theoretical expression in current use for predicting the adhesion of particles (spheres) is limited by its failure to consider molecular repulsions in summing the molecular interactions over the volumes of neighboring spheres. Hence, flattening of the spher...

    Add to ORCIDorcid
  • publication . Conference object . 1995
    Climatic testing of cardboard packaging
    Open Access English
    Authors:
    Ziegahn, K.-F.;
    Country: Germany
  • publication . Conference object . 1992
    Explainability and reflection
    Open Access English
    Authors:
    Karbach, W.; Voß, A.;
    Country: Germany
  • publication . Bachelor thesis . 2008
    Lokalisierung in mobilen Ad-hoc-Netzen ohne zusätzliche Infrastruktur: Entfernungsschätzungen und Topologiebestimmung
    Open Access German
    Authors:
    Appel, Stefan; Ebinger, Peter;
    Publisher: VDM Verlag Müller, Saarbrücken
    Country: Germany

    Die Lokalisierung der Netzwerkknoten in einem mobilen Ad-hoc-Netz (MANET) ist für eine Reihe von Anwendungen bedeutsam. Wenn die Geopositionen der einzelnen Netzwerkknoten bekannt sind, können z.B. spezielle Routing-Verfahren eingesetzt werden, um die kürzesten Wege im ...

238,532 research outcomes, page 1 of 23,854