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Crown Indicators

Peter Ingwersen , IVA, Denmark University College, Oslo, Norway 2011. Crown Indicators. ‘ Crown indicators ’. Normalized impact-indicators for one unit (center/university/country) in relation to research field globally: JCI : Journal Crown Indicator

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Crown Indicators

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  1. Peter Ingwersen, IVA, Denmark University College, Oslo, Norway 2011 Crown Indicators 2011

  2. ‘Crown indicators’ • Normalized impact-indicators for one unit (center/university/country) in relation to research field globally: • JCI : Journal Crown Indicator • FCI : Field Crown Indicator – both provide an index number 2011

  3. Journal Crown Indicator • The ratio between: - the real numberof citations received for all journal articles in a unit, and - the diachronic citation impact of the same journals used by the unit, covering the same period (= the expected impact). ONE WOULD NEVER APPLY THE ISI-JIF!! Since it only signifies the AVERAGE (international) impact of an article made in a synchronous way 2011

  4. Field Crown Indicator - FCI • Normalisationmust be weighted in relation to the observed unit’s publication profile: • Like a ’shadow’ unit (country) • An example of this weighting for India – applying Nat. Sc. Indicators: 2011

  5. Research profile as weight for impact calculation (as ‘shadow country’) 2011

  6. Research profile (China) as weight for impact calculation (as ‘shadow country’) 2011

  7. A small European country with very different profile 2011

  8. Example of research profile with FCI-index score 2011

  9. Van Raan, Århuspræsentation, 2006

  10. Summary: Different indicators – one given period • Σc/Σp / ΣC/ΣP – Globally normalized impact: • For single fields it is OK to use! • If averaged over all subject areas: quick’n dirty!: all areas have the same weight! – thus: • Σc / Σ(C/Parea x parea ) = FCI: StandardField Crown Indicator (FCI) for ’profile’ of subject areas for a local unit (country/university) – via applying it as global profile, like a kind of ’shadow unit’. Made as ratio of sums of citations over publications (weights) (If done as sum of rations divided by fields: all fields equal) 2011

  11. Other Indicators • (FCIunit) x punit = Brute Force • JCIunit / FCIunit = Rel. Impact of applied journal set in unit • Citedness: Percent of publications cited at least once in given period. • May often explain high impact in a field/unit • Contribution to top 5; upper quartile … of a field’s central journals China 2008

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