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  • 1
    Electronic Resource
    Electronic Resource
    A nonuniform matroid which violates the isotopy conjecture (1989)
    Springer
    Discrete & computational geometry 4 (1989), S. 1-2 
    Details
    ISSN: 1432-0444
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract The Isotopy Conjecture for Oriented Matroids states that the realization space over the real number field of an oriented matroid is path-connected. We provide a nonuniform counterexample of rank 3 on 42 points.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02187710
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  • 2
    Electronic Resource
    Electronic Resource
    Uniform oriented matroids without the isotopy property (1989)
    Springer
    Discrete & computational geometry 4 (1989), S. 97-100 
    Details
    ISSN: 1432-0444
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract We give an easy general construction for uniform oriented matroids with disconnected realization space. This disproves the longstanding isotopy conjecture for simple line arrangements or order types in the plane.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02187717
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  • 3
    Electronic Resource
    Electronic Resource
    Intelligent sensors (1997)
    Bradford : Emerald
    Sensor review 17 (1997), S. 97-98 
    Details
    ISSN: 0260-2288
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Discusses the concept of intelligent sensors and presents a definition of the term. Provides examples of the benefits of using the intelligent sensor approach. Suggests possibilities for future use of intelligent sensors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/02602289710170267
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  • 4
    Electronic Resource
    Electronic Resource
    Significant decadal-scale impact of volcanic eruptions on sea level and ocean heat content (2005)
    [s.l.] : Nature Publishing Group
    Nature 438 (2005), S. 74-77 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Ocean thermal expansion contributes significantly to sea-level variability and rise. However, observed decadal variability in ocean heat content and sea level has not been reproduced well in climate models. Aerosols injected into the stratosphere during volcanic eruptions scatter incoming solar ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature04237
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  • 5
    Electronic Resource
    Electronic Resource
    Computing combinatorial decompositions of rings (1991)
    Springer
    Combinatorica 11 (1991), S. 275-293 
    Details
    ISSN: 1439-6912
    Keywords: 68 C 20 ; 13-04 ; 20 C 05
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Using Buchberger's Gröbner basis theory, we obtain explicit algorithms for computing Stanley decompositions, Rees decompositions and Hironaka decompositions of commutative Noetherian rings. These decompositions are of considerable importance in combinatorics, in particular in the theory of Cohen-Macaulay complexes. We discuss several applications of our methods, including a new algorithm for finding primary and secondary invariants of finite group actions on polynomial rings.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01205079
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  • 6
    Electronic Resource
    Electronic Resource
    Screen printable polymer piezoelectrics (2000)
    Bradford : Emerald
    Sensor review 20 (2000), S. 135-138 
    Details
    ISSN: 0260-2288
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: The use of polymer thick-film technology for the implementation of piezoelectric sensors opens up the way towards the low-cost production of piezoelectric sensing devices. A novel polymer thick-film piezoelectric paste is presented and compared with other piezoelectric materials. The main advantages of these films are the low processing temperature, their flexibility and the ease of creating patterns with feature sizes as small as 200µm. Various applications are proposed demonstrating the potential of these screen printable polymer piezoelectrics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/02602280010319222
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  • 7
    Electronic Resource
    Electronic Resource
    All 113 and 123-configurations are rational (1990)
    Springer
    Aequationes mathematicae 39 (1990), S. 254-260 
    Details
    ISSN: 1420-8903
    Keywords: Primary 51A20 ; Secondary 11Y50, 05B30, 68Q40
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Summary A conjecture of Grünbaum states that everyn 3 -configuration in the real plane can also be realized in the rational plane. We prove this conjecture forn ⩽ 12 by computing rational coordinates for all 31 types of 113 -configurations and all 228 types of 123- configurations in the classification of Daublebsky.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01833153
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  • 8
    Electronic Resource
    Electronic Resource
    Eddy momentum flux and its contribution to the Southern Ocean momentum balance (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 482-484 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We use two years of Geosat altimeter data to calculate the variance in surface velocity at crossover points, where time series of the two components of velocity from ascending and descending groundtracks are available. The absolute velocity cannot be determined accurately from altimetry because ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/357482a0
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  • 9
    Electronic Resource
    Electronic Resource
    Trademarks must not go generic (1995)
    [s.l.] : Nature Publishing Group
    Nature 375 (1995), S. 432-432 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE news that the pharmaceutical company Bristol-Myers Squibb has registered the name taxol as a trademark in nearly 70 countries worldwide, potentially giving them the right to prevent anyone else from using the name, has given rise to widespread comment in the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/375432a0
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  • 10
    Electronic Resource
    Electronic Resource
    Grassmann—Cayley algebra and robotics (1994)
    Springer
    Journal of intelligent and robotic systems 11 (1994), S. 91-107 
    Details
    ISSN: 1573-0409
    Keywords: Plücker coordinates ; Grassmann—Cayley algebra ; robot ; motion space ; series-parallel ; mechanism ; infinitesimal rigiditly ; spline ; Cayley factorization ; bracket algebra ; projective geometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Plücker coordinates are a suitable way to represent lines in space for purposes of studying instantaneous motions of robot arms. Similarly, we can represent any affine subspace of Euclidean space of any dimension. This can be useful for studying motion spaces of robot arms. In this paper, after we introduce Plücker coordinates and develop a few of their basic properties, we present them in a somewhat more abstract setting, called the Grassmann—Cayley algebra. Several other applications of this algebra are also described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01258296
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