PubMed · 9025465
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K W Backe. 1996. [Interference with the genome].. https://pubmed.ncbi.nlm.nih.gov/9025465/
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OBJECTIVES: To revise the criteria used in the present "Required Sweat Rate" standard ISO 7933 (1989) for the prediction of the maximum duration of work in hot environments. METHODS: Review of the literature and in particular, of the bases for the present criteria. RESULTS: A new method is proposed, to take into account the increase in core temperature associated with activity in neutral environments. The prediction of maximum wetness and maximum sweat rates are revised, as well as the limits for maximum water loss and core temperature. CONCLUSION: An improved set of maximum values and limits is described, to be used in the revised version of the ISO 7933 standard. Due to the major modifications to the "Required Sweat Rate" index and in order to avoid any confusion, it is suggested that the revised model be renamed the "Predicted Heat Strain" (PHS) model.
This paper offers a set of sociotechnical principles to guide system design, and some consideration of the role of principles of this kind. The principles extend earlier formulations by Cherns (1976, Human Relations, 29, 783-792; 1987, Human Relations, 40, 153-162). They are intended to apply to the design of new systems, including those incorporating new information technologies and a range of modern management practices and ways of working. They attempt to provide a more integrated perspective than is apparent in existing formulations. The principles are of three broad types: meta, content and process, though they are highly interrelated. They are for use by system managers, users and designers, and by technologists and social scientists. They offer ideas for debate and provide devices through which detailed design discussions can be elaborated. The principles are most likely to be effective if they are relatively freestanding, but supported by relevant methods and tools. The principles are necessary but not sufficient to make a substantial contribution to design practice.