Neueste Zugänge

  • A metric to assess the trustworthiness of certificate authorities 

    Abschlussarbeit (Master; Diplom)
    Heinl, Michael P. (Universität Ulm, 2019-03-14)
    In the recent past, there has been a series of security incidents leading to increasing concern regarding the trust model currently employed by public key infrastructures. One of the key criticisms is the architecture’s ...
  • Systematische Security-Tests von Kraftfahrzeugen 

    Dissertation
    Ring, Martin (Universität Ulm, 2019-03-14)
    Kraftfahrzeuge waren abgeschlossene Systeme und daher für digitale Angriffe weitestgehend uninteressant. Dies hat sich in den vergangenen Jahren stark geändert, es halten immer mehr drahtlose Schnittstellen Einzug und seit ...
  • From curse to blessing: harnessing geomagnetic field disturbances for ubiquitous navigation 

    Dissertation
    Frassl, Martin (Universität Ulm, 2019-03-14)
    Determination of location is a fundamental problem with a long history of research and technical solutions. The research described in this thesis focuses on the use of a specific signal, the magnetic field, to achieve ...
  • Can music foster learning – effects of different text modalities on learning and information retrieval 

    Wissenschaftlicher Artikel
    Lehmann, Janina A. M.; Seufert, Tina (Universität Ulm, 2018-01-09)
    This study investigates the possibilities of fostering learning based on differences in recall and comprehension after learning with texts which were presented in one of three modalities: either in a spoken, written, or ...
  • A complex low-RCS antenna system for the placement of mm-wave automotive radars behind car bumpers 

    Beitrag zu einer Konferenz
    Vasanelli, Claudia; Bögelsack, Frank; Waldschmidt, Christian (Universität Ulm, 2018-12-10)
    Automotive radars are one of the key sensor technologies to develop reliable fully-automated cars. They are usually installed behind the bumper of the vehicle and therefore, multiple reflections can occur. The multiple ...
  • 160-GHz radar proximity sensor with distributed and flexible antennas for collaborative robots 

    Wissenschaftlicher Artikel
    Geiger, Martin; Waldschmidt, Christian (Universität Ulm, 2019-01-09)
    There is a growing demand for collaborative robots in order to improve the efficiency of industrial processes and to push Industry 4.0 forward. The challenge for these robots is the compliance of the safety regulations to ...
  • Systems of bounded rational agents with information-theoretic constraints 

    Wissenschaftlicher Artikel
    Gottwald, Sebastian; Braun, Daniel A. (Universität Ulm, 2019-01-18)
    Specialization and hierarchical organization are important features of efficient collaboration in economical, artificial, and biological systems. Here, we investigate the hypothesis that both features can be explained by ...
  • On hardware implementations of stepped-carrier OFDM radars 

    Beitrag zu einer Konferenz
    Schweizer, Benedikt; Schindler, Daniel; Knill, Christina; Hasch, Jürgen; Waldschmidt, Christian (Universität Ulm, 2018-08-20)
    Orthogonal frequency-division multiplexing (OFDM) is a promising candidate for future digital-centric radar systems. One major limitation for practical implementations is the required sampling rate in the order of GHz, ...
  • Expanding the unambiguous velocity limitation of the stepped-carrier OFDM radar scheme 

    Beitrag zu einer Konferenz
    Schweizer, Benedikt; Schindler, Daniel; Knill, Christina; Hasch, Jürgen; Waldschmidt, Christian (Universität Ulm, 2018-11-29)
    The main limitation for the practical implementation of OFDM radars is the required high sampling rate of AD/DA converters. It can be solved by using a stepped-carrier OFDM scheme. Thereby, the same range and Doppler ...
  • Effort considerations of compressed sensing for automotive radar 

    Beitrag zu einer Konferenz
    Roos, Fabian; Hügler, Philipp; Bechter, Jonathan; Razzaq, Muhammad Ahsan; Knill, Christina; Appenrodt, Nils; Dickmann, Jürgen; Waldschmidt, Christian (Universität Ulm, 2019-01-21)
    The application of iterative compressed sensing algorithms for automotive radar is often considered as too complex for real-time evaluation. In this paper, it is shown that the number of required iterations can be chosen ...

View more