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The geographical distribution of diagnostic medical and dental X-ray services in South Africa

Walters, N. M.; Zietsman, H. L.; Bhagwandin, N. (Health & Medical Publishing Group, 1998)

Aim. The aim of this study was threefold, viz.: (/) to evaluate the availability and accessiblity of medical and dental X-ray services in South Africa; (//) to evaluate geographical information systems (GIS) as a tool for ...
Surface temperature measurement from space : a case study in the South Western Cape of South Africa

Sandham, L. A.; Zietsman, H. L. (South African Society for Enology and Viticulture, 1997-03)

This paper reports on the use of Landsat Thematic Mapper (TM) thermal infrared (TIR) and Transformed Normalised Difference Vegetation Index (TNDVI) data to map summer surface temperature distribution in a portion of the ...