OECD Culture and Local Development.pdf - PACA
OECD Culture and Local Development.pdf - PACA
OECD Culture and Local Development.pdf - PACA
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
ANNEX 2<br />
The second measure is given by Gb i :<br />
Gb 2<br />
i<br />
k<br />
= [ i<br />
( Z<br />
k<br />
− Z<br />
k<br />
m Z<br />
)<br />
2<br />
∑<br />
k<br />
i<br />
i sk<br />
Z<br />
k<br />
= <br />
i i<br />
x<br />
i<br />
with <strong>and</strong> is the ranking of the geographic unit when units are ranked<br />
i<br />
Z k<br />
by increasing order of . This index falls between 0 <strong>and</strong> 1. If it is 1, concentration is<br />
maximised, <strong>and</strong> if it is 0, dispersion is maximised.<br />
These indicators can be used to identify territories, while at the national level<br />
they identify different degrees of concentration for sectors of activity. Thus, in the case<br />
of France, if we distinguish the arts, culture (the arts plus cultural industries) <strong>and</strong> creativity<br />
(culture plus certain so-called creative industries) by increasing order of extension,<br />
we find growing indices of concentration. This reinforces the hypothesis of cultural<br />
<strong>and</strong> creative arts districts as opposed to the notion that these activities are scattered<br />
throughout the territory. (Paris has been left out of the sample to avoid biasing it through<br />
that city’s very high concentration of artistic, cultural <strong>and</strong> creative activities, <strong>and</strong> to<br />
provide a more useful overview of the hypotheses tested).<br />
Table 1. Concentration indices for three types of activity<br />
(France excluding the City of Paris)<br />
HERFINDHAL GINI 1 GINI 2<br />
Art 0.12 0.11 0.03<br />
<strong>Culture</strong> 0.19 0.13 0.25<br />
Creativity 0.29 0.18 0.44<br />
Source: Greffe X. & Simmonet, V. (April 2004), Analyse de l'identification des concentrations culturelles, Paris: DATAR, p.23-6<br />
Annex 2.2. Synergy<br />
Specialisation <strong>and</strong> concentration may not be enough to define a district or cluster,<br />
because the determining factor will be the quality of interdependencies among the<br />
industries in the territory concerned. Yet, as with concentration, synergy only deserves<br />
attention if it appears more prominently than does synergy among the same activities<br />
at the national level. For example, while it is logical to expect a certain flow of trade<br />
between book publishing <strong>and</strong> image publishing at the national level, a district for<br />
these businesses will not appear unless the flow is greater than the national figure.<br />
The first step is to define the correlations between activities that appear logically at<br />
the national level. The second step is to identify the quality of synergy within a given<br />
territory, in order to determine whether it is of greater quality than synergy at the national<br />
level.<br />
CULTURE AND LOCAL DEVELOPMENT - ISBN 92-64-00990-6 - © <strong>OECD</strong> 2005 185