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  • Articles  (101)
  • Latest Papers from Table of Contents or Articles in Press  (71)
  • Articles: DFG German National Licenses  (30)
  • Springer  (101)
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  • Articles  (101)
Source
  • Latest Papers from Table of Contents or Articles in Press  (71)
  • Articles: DFG German National Licenses  (30)
Keywords
Publisher
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Journal
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  • 1
    Electronic Resource
    Electronic Resource
    Development of a rapid prototyping design advice system (1999)
    Springer
    Journal of intelligent manufacturing 10 (1999), S. 331-339 
    Details
    ISSN: 1572-8145
    Keywords: Rapid prototyping ; expert system ; knowledge based system ; decision support ; product development aid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract This paper describes the initial development of a computer based Rapid Prototyping Design Advice System. The system is intended to assist the designer or project manager, particularly those in small and medium sized companies, in planning the prototyping stage of product development. It provides the user with an efficient and user friendly development aid which uses information obtained from the user and Computer Aided Design data to recommend suitable rapid prototyping solutions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008920512663
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  • 2
    Electronic Resource
    Electronic Resource
    Imaging the Gas Distribution and Kinematics in the Early Universe with ALMA (1999)
    Springer
    Astrophysics and space science 269-270 (1999), S. 533-540 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A summary is presented of the status of the Atacama Large Millimeter Array (ALMA) project. The scientific goals for the project, in particular the goals for imaging gas in early galaxies, are used to illustrate the specific needs for the development of ALMA technology making it, uniquely, a complete imaging system. The plans to achieve this development by means of common international effort and under a common Memorandum of Understanding are noted. Finally, estimates are given of the construction timescale and the principle issues that remain to be settled are highlighted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1017083416083
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  • 3
    Electronic Resource
    Electronic Resource
    Computer derivation of algebraic equations associated with runge-kutta formulas (1967)
    Springer
    BIT 7 (1967), S. 156-162 
    Details
    ISSN: 1572-9125
    Keywords: Algebraic ; equations ; Runge-Kutta ; computer ; derivation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract The derivation of algebraic non-linear equations associated with Runge-Kutta formulas increases in complexity as the order of these formulas increases. To overcome this difficulty various operational methods have been devised. But these methods are quite involved and there also exists the possibility of human errors which may be difficult to detect. The aim of this paper is the derivation of these algebraic equations through a digital computer, the IBM 7094, using Fortran IV. The technique employed is based upon a mathematical method established by the first author. With the advent of the space age there arose a continuous need for Runge-Kutta formulas of higher and higher orders. It seems that the computer offers the best, if not the only, hope in keeping up with these needs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01934278
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  • 4
    Electronic Resource
    Electronic Resource
    Book reviews (1970)
    Springer
    The annals of regional science 4 (1970), S. 157-174 
    Details
    ISSN: 1432-0592
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geography , Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01287741
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  • 5
    Electronic Resource
    Electronic Resource
    Book reviews (1969)
    Springer
    The annals of regional science 3 (1969), S. 248-270 
    Details
    ISSN: 1432-0592
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geography , Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01324694
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  • 6
    Electronic Resource
    Electronic Resource
    Genetic and physical mapping of the GLUR5 glutamate receptor gene on human chromosome 21 (1994)
    Springer
    Human genetics 〈Berlin〉 94 (1994), S. 565-570 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Glutamate receptors (GluRs) mediate excitatory neurotransmission and may have important roles in central nervous system disorders. To characterize the human GLUR5 gene, which is located on human chromosome 21q22.1, we isolated cDNAs, genomic phage lambda clones, and yeast artificial chromosomes (YACs) and developed sequence tagged sites (STSs) and simple sequence length polymorphisms (SSLPs) for GLUR5. Genetic mapping with a tetranucleotide AGAT repeat named GLUR5/AGAT (six alleles observed, 70% heterozygosity) placed GLUR5 5 cM telomeric to APP (D21S210) and 3cM centromeric to SOD1 (D21S223). The humanGLUR5 gene is located near the familial amyotrophic lateral sclerosis (FALS) locus; linkage analysis of GLUR5 SSLPs in FALS pedigrees yielded negative lod scores, consistent with the recent association of the FALS locus with the SOD1 gene. Physical mapping of GLUR5 using a YAC contig suggested that the GLUR5 gene spans approximately 400–500kb, and is within 280kb of D21S213. The large size of the GLUR5 gene raises questions regarding its functional significance. Our GLUR5 YAC contig includes clones found in the Genethon chromosome 21 YAC contig, and reference to the larger contig indicates the orientation centromere — D21S213 — GLUR5 5′ end-GLUR5/ AGAT — GLUR5 3′ end — SODI. The development of GLUR5/AGAT should permit rapid determination of the status of the GLUR5 gene in individuals with partial trisomy or monosomy of chromosome 21. Such studies may provide insights concerning the possible role of GLUR5 in Down syndrome.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00211029
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  • 7
    Electronic Resource
    Electronic Resource
    Investigation of point defect clusters in silicon using parallel molecular dynamics (1997)
    Springer
    Journal of computer-aided materials design 4 (1997), S. 29-42 
    Details
    ISSN: 1573-4900
    Keywords: Parallel molecular dynamics ; Point defects ; Silicon ; Aggregation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A parallel molecular dynamics algorithm is presented for computingconfigurations of relatively large defects in crystalline silicon, as modelledby the Stillinger–Weber (SW) three-body interatomic potential. Thealgorithm is based on a partitioning of physical space among the N processorswith atoms migrating freely between the partitions. Implementation on aneight-processor IBM SP2 computer shows the increased efficiency withsimulation size expected because of the increased computational load perprocessor relative to communication overhead. The parallel efficiency reached70% for 21 952 atoms. Calculations are presented for the thermodynamics offormation of interstitial and vacancy clusters containing up to seven pointdefects. The clusters were relaxed within a host lattice of about 3000 siliconatoms subjected to periodic boundary conditions. Free energies of formationfor temperatures 500 K ≤ T ≤ 1600 K were computed using thermodynamicintegration. Computed equilibrium distributions for these clusters show ashift to the larger species at lower temperatures, as expected. The SWpotential predicts greater driving forces for interstitial aggregation thanvacancy aggregation across the entire temperature range. Model calculationsfor a large vacancy cluster are also presented to demonstrate the utility ofthe algorithm for exploring very large defects in silicon.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008661719368
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  • 8
    Electronic Resource
    Electronic Resource
    Near resonant charge transfer processes at thermal energies (1972)
    Springer
    Astrophysics and space science 16 (1972), S. 274-283 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A useful procedure is described for the evaluation of near resonant charge transfer cross-sections at thermal energies. The method is based on a generalization of a semi-classical approach introduced by Bates and Mapleton for the study of symmetric resonant charge transfer processes. The rate coefficient is calculated for the reaction O++H⇆H++O as a function of temperature between 10 and 104 K; the results are compared to those obtained using the ‘orbiting approximation’. A brief application of these rates to the interstellar medium is made where it is found that substantial differences emerge between cases where the gas is heated by cosmic rays or by X-Rays.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00642739
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  • 9
    Electronic Resource
    Electronic Resource
    Chemical composition of the interstellar gas: X-ray determinations (1972)
    Springer
    Astrophysics and space science 18 (1972), S. 329-333 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Noting that observations of X-ray attenuation at theK-shell ionization edge for many elements provide, prospectively, the least ambiguous means for establishing the chemical composition of the interstellar gas, we have evaluated the expected spectral discontinuities for all atoms from carbon to sodium and have tabulated the results. It is shown that with X-ray detectors of reasonable energy resolution and sensitivity theK-shell edges of C, N, O, Ne, Si, S, A and Mg are potentially observable if the ‘cosmic’ abundances are representative of the general interstellar environment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00645397
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  • 10
    Electronic Resource
    Electronic Resource
    Anomalous fluorescence properties of 4-N,N-dimethylaminobenzoic acid in polar solvents (1992)
    Springer
    Journal of fluorescence 2 (1992), S. 107-115 
    Details
    ISSN: 1573-4994
    Keywords: Fluorescence ; anomalous fluorescence ; 4-N,N-dimethylaminobenzoic acid ; dimerization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract 4-N,N-Dimethylaminobenzoic acid exhibits anomalous fluorescence in polar and hydrogen-bonding solvents. The fluorescence spectra and kinetics suggest that this arises due to the formation of a ground-state dimer or higher polymer. Preliminary measurements in hexane containing small amounts of polar acetonitrile do not rule out the possibility of exciplex formation also occurring.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00867670
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