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  • 1
    Electronic Resource
    Electronic Resource
    Afrikaners, Nationalists, and Apartheid (1970)
    Cambridge : Cambridge University Press
    The @journal of modern African studies 8 (1970), S. 531-549 
    Details
    ISSN: 0022-278X
    Source: Cambridge Journals Digital Archives
    Topics: Ethnic Sciences , History , Political Science , Economics
    Notes: It seems that one of the major fallacies today is that of generalisation. We have all had our fill of the writer or speaker who refers to ‘the African and his animistic religion’, ‘the Zulu and his impi-membership’, or the ‘military syndrome’ in African politics. Every intelligent reader and student is conscious of the danger of generalisation and the tendency to lump under some uniform heading ‘the African’, ‘the Negro’, and ‘the Afrikaner’. While animism, the impi, or military coups may mark or may have marked particular groups of people at a particular time, it is as dangerous to use such generalisations as it is to use the sweeping term ‘the Afrikaner’.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S0022278X00023880
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Consciousness, Identification, and Resistance in South Africa (1983)
    Cambridge : Cambridge University Press
    The @journal of modern African studies 21 (1983), S. 365-395 
    Details
    ISSN: 0022-278X
    Source: Cambridge Journals Digital Archives
    Topics: Ethnic Sciences , History , Political Science , Economics
    Notes: Colonial and neo-colonial situations are characterised by an absence of power-sharing, though those who have the political power may allow token participation by others. Tokenism exists in many aspects of life, though typically minority-group members enjoy greater economic and adminstrative rights than political and legislative rights. In the last analysis, the governmanet is not accountable to such minorities because they are not part of the electorate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S0022278X0002348X
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Missionaries, Anthropologists, and the Policies of the Dutch Reformed Church (1984)
    Cambridge : Cambridge University Press
    The @journal of modern African studies 22 (1984), S. 617-632 
    Details
    ISSN: 0022-278X
    Source: Cambridge Journals Digital Archives
    Topics: Ethnic Sciences , History , Political Science , Economics
    Notes: This article discusses the relationship of missionaries and anthropologists in South Africa. Due to such important factors as ethnicity, linguistic group membership, denominationalism, and party political affiliation, it is essential to present historical perspectives on these and related matters. The vocation of missionary is almost exclusively a white enterprise as is that of professional anthropologist. Blacks have however had significant influences in both realms and are today entering these vocations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S0022278X00056263
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    Paper (German National Licenses)
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  • 4
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    Velocity measurements close to rippled beds in oscillatory flow (1981)
    Cambridge University Press
    Details
    Publication Date: 1981-11-01
    Description: The results are reported of velocity measurements in oscillatory flow over rippled beds. Velocities were measured with a laser-doppler anemometer in both an oscillating tray rig and an oscillatory flow water channel. Both self-formed and artificial ripples were examined. In addition, some measurements were made with an apparently plane bed with intense sediment motion. The experimental results were compared with the predictions of Kalkanis (1964), Kajiura (1968), Bakker (1973, 1974) and Sleath (1974). The closest agreement between theory and experiment was obtained with the method of Sleath. Measurements of the Eulerian drift velocities showed drift towards the adjacent ripple crest in the immediate vicinity of the bed and away from the crest further out. © 1981, Cambridge University Press. All rights reserved.
    Print ISSN: 0022-1120
    Electronic ISSN: 1469-7645
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Published by Cambridge University Press
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  • 5
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    The Lobe Structure in Ice Accreted on an Aluminium Conductor in The Presence of a Dc Electric Field (1983)
    Cambridge University Press
    Details
    Publication Date: 1983-01-01
    Description: Supercooled droplets of 38 μm mean volume diameter are accreted on a smooth aluni mum cylinder of 3.15 cm in diameter in order to study the effect of an electrostatic field upon ice formation on a power-line conductor. The results obtained show that ice grown in the presence of an applied negative field of 15 kV cm−1 exhibits a cusped-lobe structure characterized by surfacial outward knobs, convex rings of fine air bubbles and radial lines of large air bubbles; in the same conditions, a positive electric field of 15 kV cm−1 does not produce such lobe features. On the other hand, accretion tests performed in the absence of an electric field with a 33 μm droplet spectrum show that the well-developed cusped-lobe structure appears in ice at low ambient temperature and air velocity. In the present experimental conditions, the formation of cusped lobes observed in the presence of a negative electric field could be explained by a decrease in the temperature of the deposit due to a reduction of impact velocity of the charged droplets and/or an increase in the local heat-transfer coefficient at the surface of the ice accretion. Corona wind from ice points, always in the opposite direction to the impinging droplets, may also reduce their impact velocities. In addition, corona wind and roughness of the surface may contribute to a better evacuation of the latent heat and thus decrease the deposit temperature. The difference between the effects of a negative DC field and those of a DC positive field of the same strength comes from a stronger ionization intensity and/or a stronger deformation of water drops in the negative electric field.
    Print ISSN: 0260-3055
    Electronic ISSN: 1727-5644
    Topics: Geography , Geosciences
    Published by Cambridge University Press on behalf of International Glaciological Society.
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  • 6
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    The Lobe Structure in Ice Accreted on an Aluminium Conductor in The Presence of a Dc Electric Field (1983)
    Cambridge University Press
    Details
    Publication Date: 1983-01-01
    Description: Supercooled droplets of 38 μm mean volume diameter are accreted on a smooth aluni mum cylinder of 3.15 cm in diameter in order to study the effect of an electrostatic field upon ice formation on a power-line conductor. The results obtained show that ice grown in the presence of an applied negative field of 15 kV cm−1 exhibits a cusped-lobe structure characterized by surfacial outward knobs, convex rings of fine air bubbles and radial lines of large air bubbles; in the same conditions, a positive electric field of 15 kV cm−1 does not produce such lobe features. On the other hand, accretion tests performed in the absence of an electric field with a 33 μm droplet spectrum show that the well-developed cusped-lobe structure appears in ice at low ambient temperature and air velocity. In the present experimental conditions, the formation of cusped lobes observed in the presence of a negative electric field could be explained by a decrease in the temperature of the deposit due to a reduction of impact velocity of the charged droplets and/or an increase in the local heat-transfer coefficient at the surface of the ice accretion. Corona wind from ice points, always in the opposite direction to the impinging droplets, may also reduce their impact velocities. In addition, corona wind and roughness of the surface may contribute to a better evacuation of the latent heat and thus decrease the deposit temperature. The difference between the effects of a negative DC field and those of a DC positive field of the same strength comes from a stronger ionization intensity and/or a stronger deformation of water drops in the negative electric field.
    Print ISSN: 0260-3055
    Electronic ISSN: 1727-5644
    Topics: Geography , Geosciences
    Published by Cambridge University Press on behalf of International Glaciological Society.
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