Background Based on experiences and empirical evidence gained in studies using the Lancashire Quality of Life Profile (LQLP), the Manchester Short Assessment of Quality of Life (MANSA) has been developed as a condensed and slightly modified instrument for assessing quality of life. Its properties have been tested in a sample of community care patients. Method Fifty-five randomly selected patients on the Care Programme Approach were interviewed using the LQLP, the MANSA and the Brief Psychiatric Rating Scale. Results Correlations between subjective quality of life scores on MANSA and LQLP were all 0.83 or higher (0.94 for the satisfaction mean score). Cronbach's alpha for satisfaction ratings was 0.74, and association with psychopathology was in line with results for LQLP as reported in the literature. Conclusions The MANSA is a brief instrument for assessing quality of life focusing on satisfaction with life as a whole and with life domains. Its psychometric properties appear satisfactory.
Radio-echo sounding (RES), utilizing a variety of radio frequencies, was developed to allow glaciologists to measure the thickness of ice sheets and glaciers. We review the nature of electromagnetic wave propagation in ice and snow, including the permittivity of ice, signal attenuation and volume scattering, along with reflection from rough and specular surfaces. The variety of instruments used in RES of polar ice sheets and temperate glaciers is discussed. The applications and insights that a knowledge of ice thickness, and the wider nature of the form and flow of ice sheets, provides are also considered. The thickest ice measured is 4.7 km in East Antarctica. The morphology of the Antarctic and Greenland ice sheets, and many of the smaller ice caps and glaciers of the polar regions, has been investigated using RES. These findings are being used in three-dimensional numerical models of the response of the cryosphere to environmental change. In addition, the distribution and character of internal and basal reflectors within ice sheets contains information on, for example, ice-sheet layering and its chrono-stratigraphic significance, and has enabled the discovery and investigation of large lakes beneath the Antarctic Ice Sheet. Today, RES from ground-based and airborne platforms remains the most effective tool for measuring ice thickness and internal character.
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