Example sentences of "[noun pl] [prep] [noun pl] over time " in BNC.

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1 ( Totally homogenous capital and labour markets ; constant returns to scale over all ranges of output ; marginal productivity pricing for all factors ; continuously variable relationships between factors over time ; land as an insignificant input . )
2 To say anything sensible about ( d ) and ( c ) , substantial long-term studies of changes over time as well as in different places are called for .
3 In the chapter on evolution , Stuart rightly stresses the importance of a good stratigraphic and geographic record for studies of changes over time between species .
4 In the 1970s the Department of Education and Science pinned its hopes on the APU to provide a general measure of the achievement of children at schools and , implicitly , changes in standards over time .
5 For a fuller understanding of the factors affecting divorce , we have to consider not only changes in rates over time but also differences between social groups in rates of divorce .
6 The figures in Table 5.1 are from cross-sectional data , obtained in 1980 , and could therefore be misleading as indicators of changes in households over time .
7 In addition , other legal principles are laid down by the decisions of judges over time , or proclaimed in legislation .
8 Differences in results over time may be due to errors which must be attached to judgements of mastery , whether test results or teachers ' judgements or both are used in making the judgement .
9 For example , the Home Office monitors violent crime by looking at numbers and trends in patterns over time and produces annual figures for offences and convictions , but in so doing avoids the problems of definition that bedevil the researcher .
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