thesis
Determinants of supply chain structure
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Abstract
This dissertation is a contribution to the study of manufacturing subcontracting, with
particular reference to the European Automotive industrial sector. It takes as its central
theme, the structure of supply chains - the way in which value addition is split amongst
members of the chain. The thesis addresses a central question: What factors determine
optimum structure and practice in modem-day industrial supply chains? This devolves
into a number of derivative questions to which various parts of the study are addressed.
With reference to 24 case study supply chains the investigation first tests whether
existing theory can fully explain the changing structures. From the results of these tests a
new model is postulated and then further work is carried out to validate the model. It was
found that the concentration in existing theory on primarily dyadic relationships meant
that when taken alone, current theory was insufficient to explain the changes in supply
chain structure in the European automotive industry in the mid to late 1990s. It is felt that
the work is novel in that it addresses the whole supply chain, and demonstrates the clear
link between the physical structure and other determining success factors. Two methods
for recording and systematically comparing both the structure and management practices
in supply chains were developed - termed 'Fixed Reference Benchmark' and
'Hierarchical Structure Mapping'. These two models were tested, and used in the
comparison of 24 European automotive supply chains. The results of this analysis
showed the dominant factors that most heavily influenced the structure of supply chains
in the European Automotive Industry to be: Criticality of component (which in turn
affects the acceptability of risk), the level, and pace of development of technology for the
component or system of the supply chain (which is strongly linked to bargaining power),
the desire to reduce the complexity of logistics (which is also linked to acceptability of
risk), the desire to reduce the cost of demand fluctuations, and the capital intensity of the
production process.
It is felt that this study of supply chain structures is valuable in its contribution to new
knowledge on three levels. At a theoretical level, it analyses the current theory, exposing
gaps and anomalies. At an empirical level it presents contemporary data that in some
parts simply substantiates and in others adds to the current theory. On a practical level it
aims to present a picture which is of use to practitioners making decisions on the future of
individual supply chains