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This section describes the Oracle Label Security functions which determine the least upper bound or the greatest lower bound of two or more labels . Many of the other coastal areas have been enclosed for various reasons , which include not least the protection of the inhabitants . Community officials and leaders should first evaluate the criteria which incur the least financial risk . The two Guidelines , taken together , ask only that a truly modern customs service should limit its own information requirements to those which can be shown to aid its operational efficiency , and should collect these and other data , for which customs acts as an intermediary collector , in ways which cause the least inconvenience to commercial export operations . In warm climates they are acknowledged as the reason behind afternoon power surges , which cause the least efficient peaking power generation to swing into action to meet demand . Legal requirements ( for example , the Council of Europe Convention ETS 123 [ 7 ] and Directive 86/609 / EEC [ 8 ] ) state that , in a choice between procedures , those methods should be selected which cause the least suffering and which are most likely to provide satisfactory results . The fridges which consume the least amount of energy are still those which the guides so far mentioned do n't even list - - those with less than 14 cubic feet of space inside .