Example sentences of "[adj] factors [conj] have [vb pp] " in BNC.

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1 The research aims to investigate some of the social psychological factors that have helped to maintain the present conflict .
2 Environmental factors that have received most attention include nutritional status and past or present hepatitis B virus ( HBV ) infection .
3 Economics , good marketing methods , an easy notation and the difficulty of building an acceptable alternative are , one suspects , the only factors that have kept Dewey Decimal alive .
4 Table 2.1 suggests , in simplified form , the changing factors that have shifted particular industries at different times towards global competition .
5 The two related factors that have worked against an integration of education and training have been traditional recruitment into the professions via Oxbridge , and the view that the summum bonum of English education is A levels .
6 The company 's poor performance has been brought about by adverse factors that have dogged Lowndes since it bought out Harris Queensway , which had grown fast in the early 1980s only to fall on more difficult times .
7 When radiocarbon dates are available from Loch Lang and Bennett and Fossitt 's investigations at other Outer Hebridean sites are completed , we will have a firmer factual basis for interpreting the vegetational history and the underlying factors that have influenced the temporal and spatial patterns of the past flora and vegetation in the Outer Hebrides .
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