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This paper investigates the forecasting accuracy of fuzzy extended group decisions in the adjustment of statistical benchmark results. DELPHI is a frequently used method for implementing accurate group consensus decisions. The concept of consensus is subject to expert characteristics and it is sometimes ensured by a facilitator's judgment. Fuzzy set theory(More)
The adsorption of Congo Red onto bentonite in a batch adsorber has been studied. Four kinetic models, the pseudo first- and second-order equations, the Elovich equation and the intraparticle diffusion equation, were selected to follow the adsorption process. Kinetic parameters; rate constants, equilibrium adsorption capacities and correlation coefficients,(More)
This paper investigates investment analysis issue on shipping business and handling of technical terms as well as financial circumstances. Ship investments are evaluated by several financial tools such as net present value, payback period etc. However, these financial methods have restrictions for analysis of technical factors such as speed of ship, under(More)
This paper proposes a cognitive model of shipping investment expertise by Analytic Hierarchy Process (AHP) approach and judgmental process survey. Assessment of shipping assets is a complicated task includes both financial and technical aspects and requires high degree of expertise particularly for technical evaluation. As a supporting tool, a fuzzy(More)
The purpose of this paper is to improve service quality of freight forwarders and explore the quality function deployment (QFD) in terms of quality management technique. Freight forwarder business is mainly characterized by lower capital investment and entry barrier comparing with a shipping line. Freight forwarders usually work closely with shipping or(More)
This paper investigates forecasting accuracy of fuzzy extended group decisions for adjustment of statistical benchmark results. Delphi is a widely-used method for implementing accurate group consensus decisions. However, the concept of consensus is subject to expert characteristics, and sometimes it is ensured by a facilitator judgment. Fuzzy set approach(More)