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The Performance of Seaport Clusters - RePub - Erasmus Universiteit ...

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13 CONCLUSIONS FOR ANALYZING CLUSTERS<br />

This chapter is the first <strong>of</strong> three concluding chapters. This chapter discusses research<br />

findings <strong>of</strong> this study that can be generalized to clusters in general. As discussed in the<br />

empirical part, this should be regarded as ‘analytical generalization’ (not as empirical<br />

generalization).<br />

In the next chapter, conclusions specifically related to seaport clusters are discussed. <strong>The</strong><br />

final chapter discusses implications for policy and management in seaport clusters. Some<br />

overlap between these chapters is unavoidable, since the same research findings can be<br />

relevant for clusters in general, for seaport clusters and for policy and management. All<br />

three chapters are finalized with a few suggestions for further research.<br />

13.1 Constructing a cluster<br />

In this study a method to identify the ‘cluster population’ was developed. <strong>The</strong> cases show<br />

that this method is applicable when ‘economic census data’ are available at a sufficiently<br />

disaggregated level, both economically and geographically. Cluster activities have to be<br />

identified with the use <strong>of</strong> input-output data, an analysis <strong>of</strong> the structure <strong>of</strong> value chains, an<br />

analysis <strong>of</strong> the association structure and expert interviews. <strong>The</strong> relevant cluster region can<br />

be identified on the basis <strong>of</strong> a concentration analysis <strong>of</strong> these cluster activities. <strong>The</strong> cluster<br />

population, consisting <strong>of</strong> all organizations engaging in cluster activities and located in the<br />

relevant cluster region, can be identified with the use <strong>of</strong> a dataset in which all firms are<br />

classified in industries. This method does allow for a precise delimitation <strong>of</strong> the cluster and<br />

consequently a more precise analysis <strong>of</strong> the development <strong>of</strong> the cluster over time.<br />

13.2 <strong>The</strong> theoretical framework<br />

<strong>The</strong> validity <strong>of</strong> the theoretical framework developed in the theoretical part (see Figure 18) is<br />

broadly confirmed in this research. A few additions to the framework that have resulted from<br />

the cases are discussed in the following paragraphs. <strong>The</strong> relevance <strong>of</strong> the four variables

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