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  • Articles  (9,131)
  • Springer  (7,716)
  • Wiley-Blackwell  (1,415)
  • American Meteorological Society
  • Springer Nature
  • Springer Science + Business Media
  • 2015-2019
  • 1985-1989  (9,131)
  • 1960-1964
  • 1986  (9,131)
  • Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics  (9,131)
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  • Articles  (9,131)
Source
Keywords
Publisher
Years
  • 2015-2019
  • 1985-1989  (9,131)
  • 1960-1964
Year
Journal
Topic
  • 1
    Electronic Resource
    Electronic Resource
    A natural language interpreter for plate girder design (1986)
    Springer
    Engineering with computers 1 (1986), S. 127-147 
    Details
    ISSN: 1435-5663
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Technology
    Notes: Abstract One of the major problems in developing computeraided design software is the establishment of effective man-machine communication. This paper describes a computer-aided plate girder design software package and its man-machine interface using natural language processing techniques. The natural language interpreter takes advantage of the user's communication and technical skills and accepts commands in the user's native language. The user can verify the correct interpretation of the commands from the responsive graphic display of the design.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01200114
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  • 2
    Electronic Resource
    Electronic Resource
    Computer diagnosis system for thermal analysis by BEM aided with simple CAD (1986)
    Springer
    Engineering with computers 1 (1986), S. 175-191 
    Details
    ISSN: 1435-5663
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Technology
    Notes: Abstract With the aid of the supercomputer we have performed three-dimensional simulations in practical cpu time. At the same time, though, huge amounts of output data must be treated automatically by post processors, so that only necessary information will be extracted and changes of models, mesh subdivisions, or boundary conditions will be taken into account. This type of information processing cannot be attained by conventional postprocessors, and a new concept of postprocessing and system must be developed in the sense of computer-aided engineering or computer diagnosis. We present a computer tomographic system COMTOS-BEM based on three-dimensional boundary element analysis; it houses its own geometric modeling and automatic mesh generation. Furthermore, it supports design feedback reactions to change modeling or meshing, make recalculations, and renew boundary conditions. In this paper, we state the basic concept of the proposed computer diagnosis system and present the necessary geometric modeling and processing and boundary element formulations. Some numerical examples illustrate the validity and effectiveness of our system in practice.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01200135
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  • 3
    Electronic Resource
    Electronic Resource
    On the symbolic manipulation and code generation for elasto-plastic material matrices (1986)
    Springer
    Engineering with computers 1 (1986), S. 205-215 
    Details
    ISSN: 1435-5663
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Technology
    Notes: Abstract A computerized procedure for symbolic manipulations and FORTRAN code generation of elasto-plastic material matrix for finite element applications is presented. Special emphasis is placed on expression simplifications during intermediate derivations, optimal code generation, and interface with the main program. A systematic procedure is outlined to avoid redundant algebraic manipulations. Symbolic expressions of the derived material stiffness matrix are automatically converted to RATFOR code which is then translated into FORTRAN statements through a preprocessor. To minimize the interface problem with the main program, a template file is prepared so that the translated FORTRAN statements can be merged into the file to form a subroutine (or a submodule). Three constitutive models; namely, von Mises plasticity, the Drucker-Prager model, and a concrete plasticity model, are used as illustrative examples.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01200137
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  • 4
    Electronic Resource
    Electronic Resource
    Phase behavior of the ternary system solvent: poly(γ-benzyl L-glutemate) and polystyrene (1986)
    Springer
    Polymer bulletin 15 (1986), S. 517-524 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Phase equilibria were investigated at 80°C for a ternary system involving a solvent benzyl alcohol, a rodlike polymer poly(γ-benzyl L-glutamate) (PBLG), and a flexible polymer polystyrene (PS). The fairly dilute solution of the two polymers was isotropic and monophasic. At greater concentrations, it was separated into two isotropic phases. Above an even higher critical concentration of the two polymers, three phases, a cholesteric (A1) and two isotropic phases (I1 and I2), coexisted at equilibrium. PBLG was contained exclusively in the phases A1 and I1, while PS was in the phase I2. The more concentrated solution was separated into a cholesteric phase and an isotropic phase. The latter contained PS but excluded PBLG, These features were discussed on the ground of the Flory theory by considering the polymer compatibility.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00281762
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  • 5
    Electronic Resource
    Electronic Resource
    Initiated oxidation of PE and PP in solution (1986)
    Springer
    Polymer bulletin 15 (1986), S. 531-537 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary A study was made on the oxidation of a low density polyethylene and of an isotactic and an atactic polypropylene in solution. The solvent was 1,2, 4-trichlorobenzene and the process was investigated at different temperatures, with varying concentrations of the initiator and of the polymer. Under the experimental conditions, a non-accelerating chain reaction proceeds at the beginning of the process. The equation derived from the proposed simplified mechanism describes consistently the dependences of experimentally measured rates on the concentrations of the initiator and of the polymer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00281764
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  • 6
    Electronic Resource
    Electronic Resource
    End group analysis of commercial poly(ethylene glycol) monomethyl ether's (1986)
    Springer
    Polymer bulletin 15 (1986), S. 547-549 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Analysis of the hydroxyl content of a series of commercial poly(ethylene glycol)monomethy1 ethers by means of 360 MHz 1H NMR spectroscopy of the trichloroacetyl isocyanate modified polymers has shown that some compounds contain considerable amounts of poly(ethylene glycol).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00281766
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  • 7
    Electronic Resource
    Electronic Resource
    Aromatic polyureas and polythioureas by a new polycondensation reaction using ethylene chlorophosphite as reagent (1986)
    Springer
    Polymer bulletin 16 (1986), S. 143-146 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Aromatic polyureas and polythioureas are prepared from aromatic diamines and carbon dioxide or carbon disulfide, by a new direct polycondensation reaction with ethylene chlorophosphite as reagent in pyridine as solvent and acceptor for hydrochloric acid at 50–60° for 6–7 hours.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00955483
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  • 8
    Electronic Resource
    Electronic Resource
    Towards an understanding of stacked base interactions: non-equilibrium phase transitions as a probable model (1986)
    Springer
    Polymer bulletin 15 (1986), S. 89-91 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary The distances of stacked bases of DNA in different conformations can-not be calculated by equilibrium potentials, since they exhibit not more than only one minimum. However, a double potential minimum is obtained by considering the most simple semiclassical model of excitons that are coupled adiabatically to lattice vibrations, hence forming polaritons. By use of Danilov's extended Hückel approximation of DNA excitons, stacked base distances can be calculated that agree fairly well with the experimental data. The errors of this approach are small as compared to the differences of the distances in various conformations. Consequently, this model may work as a first base of understanding molecular interactions in DNA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00263498
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  • 9
    Electronic Resource
    Electronic Resource
    Reactive monomers and polymers containing chiral groups (1986)
    Springer
    Polymer bulletin 15 (1986), S. 491-495 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract N-(p-methylstyryl)-(1R,2S)-ephedrine is prepared by alkylation of p-chloromethylstyrene under conditions which do not favor quaternization. A series of Copolymerization reactions confirm that the new chiral monomer and styrene copolymerize in random fashion with r1=1.09 and r2=0.98. The optical rotation of the copolymers does not vary linearly with composition. Applications of the copolymer include its use as chiral ligand for asymmetric synthesis or as a separation medium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00281758
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  • 10
    Electronic Resource
    Electronic Resource
    Preparation and characterization of polymethoxymethylstyrenes1H-13C NMR studies (1986)
    Springer
    Polymer bulletin 16 (1986), S. 59-66 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary To study the influence of dipolar moments on the permittivity of polymers, three isomeric polymers ortho, meta and para polymethoxystyrenes have been synthesized. Physical properties and NMR studies1H and13C are described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01046610
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