Title: Risk assessment of port competitiveness based on vague soft sets

Authors: Erick P. Massami

Addresses: Unit for Applied Mathematics, Dar es Salaam Institute of Technology, P.O. Box 2958, Dar es Salaam, Tanzania

Abstract: Assessment of risk that can put a port enterprise in a competitive disadvantage has increasingly become more important for port managers due to the forces of liberalisation and deregulation of international maritime business. Nonetheless, the competitive risk facing the port enterprise cannot be measured accurately by conventional methods as these techniques have some limitations in measuring vagueness, uncertainty, impreciseness and inability of defining the problem parameters precisely. In this study we therefore develop and apply an assessment model-based vague soft sets to measure the competitive risk facing the Dar es Salaam Port - Tanzania. The model's numerical results reveal that the competitive risk facing the port subject to performance enhancement is ubiquitous albeit moderate. Thus, the findings are valuable to the Dar es Salaam Port decision makers for strategic planning on competitive risk management.

Keywords: competitive risk; assessment; vague set theory; VST; soft set theory; SST; port performance.

DOI: 10.1504/IJBCRM.2017.083696

International Journal of Business Continuity and Risk Management, 2017 Vol.7 No.1, pp.43 - 59

Received: 09 Dec 2015
Accepted: 11 Jun 2016
Published online: 19 Apr 2017 *

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