Learn More
Night-time satellite imagery provided by the Defense Meteorological Satellite Program’s Operational Linescan System (DMSP OLS) is evaluated as a means of estimating the population of all the cities of the world based on their areal extent in the image. A global night-time image product was registered to a dataset of 2000 known city locations with known(More)
Standard methods for estimating poverty rates produce aggregated results for individual countries or administrative units. There are a wide number of potential applications for disaggregated grids of population numbers in poverty. We have investigated the possible use the brightness of satellite observed nighttime lights along with along with gridded(More)
Nightsat is a concept for a satellite sensor capable of mapping of the location, extent, and brightness of nighttime lights at a spatial resolution suitable for the delineation of primary features within human settlements worldwide. Based on requirements from several fields of scientific inquiry, Nightsat should be capable of producing a complete cloud-free(More)
NOAA's National Geophysical Data Center has developed a time series of annual global nighttime lights products at approximately 1 km resolution extending from 1992 to 2003. These products are cloud-free composites which have been processed to remove ephemeral lights from events like fires and background noise. Because the OLS has no on-board calibration an(More)
This study demonstrates that an unstructured interview (INT) and the Thematic Apperception Test (TAT) are suitable alternatives to Loevinger's Sentence Completion Test of Ego Development. Seventy subjects were solicited from six groups varying widely with respect to age and education level. Each subject was asked to complete the SCI, an INT and the TAT. Two(More)
Young children in the Seychelles were weighed and charted using both a beam balance with the standard growth chart and using the TALC direct recording scale with integral chart. The oscillating pointer and unwanted horizontal movement of the chart in the scale resulted in unacceptable misclassification of nutritional status equivalent to a weighing error in(More)
  • 1