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  • 1990-1994  (19)
  • 1890-1899  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Some analyses of potential profiles of forward-biased high-low junctions (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 2496-2501 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A model calculation for the variation of the normalized potential against the normalized position for a forward-biased, below 2 thermal voltage, high-low junction has been made through numerical computations of Poisson's equation. The model is oriented to a junction with a sufficiently large doping difference between the two sides.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.357022
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Intra-operative blood loss during elective lower segment caesarean section (1992)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 99 (1992), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Objective To measure intra-operative blood loss at elective lower segment caesarean section and to compare estimated wtih measured blood loss.Design Prospective observational study. Blood loss was measured in patients who underwent lower segment caesarean section in the course of routine hospital activity.Setting Tsan Yuk Hospital (Hong Kong), which is affiliated to the University of Hong Kong, 1990–1991.Subjects Forty women (mean age 29 years) with singleton pregnancies (mean gestation 38 weeks) delivered by elective lower segment caesarean section under general anaesthesia (mean birthweight 3177 g).Main outcome measure Intra-operative blood loss measured by the alkaline haematin method (intra-assay co-efficient of Variation 2.2%).Results The mean measured blood loss was 487 ml (SE 40, range 164–1438). The mean estimated blood loss was 425 ml (SE 31) range 100–1300; mode 400). Observer error in estimating blood loss was higher if measured blood loss 〉600 ml. One patient received a blood transfusion and another had a post-operative haemoglobin level 〈10.0g/dl.Conclusion Blood loss at elective lower segment caesarean section was usually 〈500 ml and was estimated with reasonable accuracy. However, there was a tendency to under-estimate blood loss when the measured loss exceeded 600 ml.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.1992.tb13749.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Temperature dependence of Auger lifetime in heavily doped Hg1−xCdxTe (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 74 (1993), S. 6642-6644 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: An expression for Auger lifetime as a function of temperature has been derived for a heavily doped Hg1−xCdxTe in the presence of a nonparabolicity of band structure, band gap narrowing, and carrier degeneracy. It is utilized to study the variation of Auger lifetime with temperature through numerical analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.355106
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Transport mechanism in semiconducting glassy silicon vanadates (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 74 (1993), S. 3961-3965 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Measurements are reported for the electrical conductivity of the semiconducting glassy silicon vanadates in the temperature range 80–400 K. The experimental results have been analyzed with reference to the existing theoretical models of hopping conduction. The analysis shows that at high temperatures the conductivity data are consistent with Mott's model [J. Non-Cryst. Solids 1, 1 (1968)] of phonon-assisted polaronic hopping, while Mott's variable range hopping model [Philos. Mag. 19, 835 (1969)] is valid at low temperatures. The small polaron model of Schnakenberg [Phys. Status Solidi 28, 623 (1968)] is also found to be consistent with the temperature dependence of the conductivity. The temperature dependence of the conductivity can also be interpreted in the framework of the percolation model proposed by Triberis and Friedman [J. Phys. C 18, 2281 (1985)]. The analysis of the conductivity data also indicates that the hopping in these vanadate glasses occurs in the nonadiabatic regime.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.354464
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Semiconducting properties of sol-gel derived vanadium silicate glasses (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 59 (1991), S. 855-856 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Preparation of semiconducting vanadium silicate glasses by the sol-gel route and the results of electrical measurements are reported for the first time. The temperature dependence of the electrical conductivity has been analyzed in terms of small polaron as well as percolation models.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.105258
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  • 6
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    A Remedy for Indian Famines (1897)
    London : Periodicals Archive Online (PAO)
    The Contemporary Review. 72 (1897:July/Dec.) 268 
    Details
    ISSN: 0010-7565
    Topics: General, Interdisciplinary
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:0274-1897-072-00-000022
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  • 7
    Electronic Resource
    Electronic Resource
    Image segmentation using a neural network (1991)
    Springer
    Biological cybernetics 66 (1991), S. 151-158 
    Details
    ISSN: 1432-0770
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Computer Science , Physics
    Notes: Abstract An object extraction problem based on the Gibbs Random Field model is discussed. The Maximum a'posteriori probability (MAP) estimate of a scene based on a noise-corrupted realization is found to be computationally exponential in nature. A neural network, which is a modified version of that of Hopfield, is suggested for solving the problem. A single neuron is assigned to every pixel. Each neuron is supposed to be connected only to all of its nearest neighbours. The energy function of the network is designed in such a way that its minimum value corresponds to the MAP estimate of the scene. The dynamics of the network are described. A possible hardware realization of a neuron is also suggested. The technique is implemented on a set of noisy images and found to be highly robust and immune to noise.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00243290
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  • 8
    Electronic Resource
    Electronic Resource
    Glass formation in the PbO-Fe2O3 system with high PbO content (1994)
    Springer
    Journal of materials science 13 (1994), S. 1054-1055 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00277037
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  • 9
    Electronic Resource
    Electronic Resource
    Gel to glass conversion in the cobalt silicate system (1994)
    Springer
    Journal of materials science 13 (1994), S. 589-591 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00592617
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  • 10
    Electronic Resource
    Electronic Resource
    A formulation of the aggregation problem in terms of coalition and bargaining theory (1990)
    Springer
    Economic change & restructuring 23 (1990), S. 97-116 
    Details
    ISSN: 1574-0277
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Notes: Abstract The object of this paper is to demonstrate in economic terms the equivalence of the problem of aggregation in input-output analysis with coalition and bargaining problems. Depending on the specific norm for aggregation it is shown that the aggregation criterion and the coalition forming criterion in an n-person game leads to a broadly similar situation in the market sense given that the market operates to that criterion. It is also shown that a mathematical analogue to this formulation may be obtained via the techniques of geometric programming.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00312929
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