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Article
Publication date: 3 May 2019

Sangho Chae, Benn Lawson, Thomas J. Kull and Thomas Choi

The purpose of this paper is to investigate the behavioral tendencies of supply managers when they are faced with uncertainty in making multi-tier sourcing decisions.

Abstract

Purpose

The purpose of this paper is to investigate the behavioral tendencies of supply managers when they are faced with uncertainty in making multi-tier sourcing decisions.

Design/methodology/approach

This paper uses the literature on multi-tier supply chains and behavioral decision making to develop a theoretical framework for examining factors influencing a supply manager’s decision to retain control over sourcing in the multi-tier context. An experimental vignette methodology is used to gather data from 259 supply managers.

Findings

Results suggest that supply managers choose to exert less multi-tier control when they have high levels of interpersonal trust in the tier-1 supplier’s sales representative. This effect is accentuated by a high level of familiarity with potential lower-tier suppliers. Under high levels of familiarity with potential lower-tier suppliers, supply managers will exert greater levels of multi-tier sourcing control as the behavioral uncertainty of the tier-1 supplier increases.

Practical implications

Buying firms can enhance their understanding of supply managers’ multi-tier sourcing decision making and the potential biases associated with it. Suggestions for a more effective use of multi-tier sourcing are provided in the Discussion section.

Originality/value

Multi-tier sourcing is an increasingly important area of research, and this paper is the first to examine individual supply managers’ behavioral decision making in the multi-tier context. This paper also contributes to the outsourcing literature by investigating behavioral factors influencing the outsourcing of sourcing activities.

Details

International Journal of Operations & Production Management, vol. 39 no. 3
Type: Research Article
ISSN: 0144-3577

Keywords

Abstract

Details

International Journal of Operations & Production Management, vol. 39 no. 3
Type: Research Article
ISSN: 0144-3577

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Article
Publication date: 1 January 2007

Sangho Kim, Euidong Yoo and Paul M. Pedersen

This study involved analysis of the consumption behaviours of spectators in the K-League (South Korea). Its dual purpose was to cluster spectators into homogeneous groups…

Abstract

This study involved analysis of the consumption behaviours of spectators in the K-League (South Korea). Its dual purpose was to cluster spectators into homogeneous groups on the basis of attitudes towards game attendance, and to define the segments obtained on the basis of the demographic and lifestyle profiles of the spectators. Multiple steps were taken to analyse the data from a survey of 967 spectators. This revealed four distinct groups - promotion-concerned, place-concerned, price-concerned and indifferent.

Details

International Journal of Sports Marketing and Sponsorship, vol. 8 no. 2
Type: Research Article
ISSN: 1464-6668

Keywords

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Article
Publication date: 18 October 2011

Ngoc Anh Vu, Young‐Jae Lee, Jae‐Woo Lee, Sangho Kim and In Jae Chung

The purpose of this paper is to study the conceptual design and optimisation of a compound gyroplane. A study of a compound gyroplane configuration and its characteristics…

Abstract

Purpose

The purpose of this paper is to study the conceptual design and optimisation of a compound gyroplane. A study of a compound gyroplane configuration and its characteristics was performed to develop a sizing program.

Design/methodology/approach

The vertical takeoff and landing capabilities of a helicopter are particularly important. The need for efficient hover and the effectiveness of forward flight in the helicopter can cause conflicts within the design process. The designers usually wish to increase the helicopter's maximum forward speed. Recently, the compound aircraft is one of the concepts considered for the purpose of expanding the flight envelope of rotorcraft. The study of the compound gyroplane showed its advance capabilities for this purpose. Understanding its characteristics, a number of calculations are conducted to implement a sizing program for compound gyroplanes based on the conventional helicopter sizing process.

Findings

The results of the sizing program were validated using existing aircraft data such as the Challis Heliplane, Carter Copter, FB‐1 Gyrodyne, and Jet Gyrodyne. The program is appropriate to size a compound gyroplane at the conceptual design phase. An optimisation study was also performed to enhance sizing results. The compromise between the rotor lift sharing factor and the ratio of the wing span (Bw) to rotor diameter (D) was solved by choosing the total gross weight (TOGW) as the objective function, while the design variables are compromising factors. The optimum results showed that the TOGW of all four kinds of compound gyroplanes was considerably reduced.

Originality/value

A conceptual sizing program for unconventional compound aircraft was developed. The study showed that an optimum design process is necessary to enhance the sizing results.

Details

Aircraft Engineering and Aerospace Technology, vol. 83 no. 6
Type: Research Article
ISSN: 0002-2667

Keywords

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