22 research outputs found

    Information Centric Networking in the IoT: Experiments with NDN in the Wild

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    This paper explores the feasibility, advantages, and challenges of an ICN-based approach in the Internet of Things. We report on the first NDN experiments in a life-size IoT deployment, spread over tens of rooms on several floors of a building. Based on the insights gained with these experiments, the paper analyses the shortcomings of CCN applied to IoT. Several interoperable CCN enhancements are then proposed and evaluated. We significantly decreased control traffic (i.e., interest messages) and leverage data path and caching to match IoT requirements in terms of energy and bandwidth constraints. Our optimizations increase content availability in case of IoT nodes with intermittent activity. This paper also provides the first experimental comparison of CCN with the common IoT standards 6LoWPAN/RPL/UDP.Comment: 10 pages, 10 figures and tables, ACM ICN-2014 conferenc

    Total synthesis of the Amaryllidaceae alkaloid clivonine

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    Two syntheses of the Amaryllidaceae alkaloid clivonine (1) are described. Both employ previously reported 7-arylhydrindane 6 as an intermediate but differ in the method employed for subsequent introduction of what becomes the ring-B lactone carbonyl carbon (C7). The synthesis featuring a Bischler–Napieralski reaction for this transformation constitutes the first asymmetric synthesis of natural (+)-clivonine. Crystal structures for compounds (±)-13, (±)-16, (−)-20 and (±)-28 are also reported

    Regierungsbezirk Pfalz (Rheinpfalz) : Königreich Bayern ; mit e. Geschichtskt.

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    von C. MehlisIn Fraktu

    Fahrten durch die Pfalz : historische Landschaftsbilder

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    von Christian Mehli

    Der Drachenfels bei DĂŒrkheim a. d. H. : Beitrag zur pfĂ€lzischen Landeskunde

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    von C. MehlisErschien in 3 unterschiedlichen Ausg.: 1. in der Reihe "Studien zur Ă€ltesten Geschichte der Rheinlande" ; 2. als Programm zum Jahresberichte des Kgl. Humanistischen Gymnasiums zu Neustadt a. d. H. fĂŒr das Schuljahr 1893/94 und 1896/97 ; 3. als Separat-Ausg. der Pollichi

    Bilder aus den Landschaften des Mittelrheins

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    ... verf. u. hrsg. von C. MehlisIn Fraktu
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