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Sungmin Ryu

Sungkyunkwan University · Business, Management and Accounting

About the Lab

Professor Sungmin Ryu's research lab specializes in supply chain management and inter-organizational relationships, with a focus on the impact of cultural factors, trust, power structures, and environmental uncertainty on governance, monitoring, and performance in manufacturer-supplier relationships. The lab investigates how cultural dimensions such as long-term orientation and collectivism shape interfirm trust, commitment, and conflict resolution in international business contexts. Using empirical methods like polynomial regression and response surface analysis, the lab explores dynamic interactions in contractual and relational governance across diverse institutional environments.

supply chain governanceinter-organizational trustcultural factorsenvironmental uncertaintymanufacturer-supplier relationships

Research Overview

Papers
70
Total Citations
1,278
Papers (5y)
8
Primary Field
Business, Management and Accounting

Research Output Trend

Figures are computed from collected data and may differ slightly.

Publications per year (5y)
8total
2020
2021
2022
2023
2025
Citations per year (5y)
8total
20202021202220232025

Selected Papers

15
1
Article|179 citations·2007
Factors of determining long-term orientation in interfirm relationships
Sungmin Ryu, Jeong Eun Park, Soonhong Min
SJR Q1Journal of Business Research
Organizational Behavior and Human Resource ManagementBusiness, Management and Accounting
2
Article|143 citations·2009
A Thermoresponsive Fluorogenic Conjugated Polymer for a Temperature Sensor in Microfluidic Devices
Sungmin Ryu, Imsung Yoo, Simon Song, Bora Yoon, Jong‐Man Kim
SJR Q1Journal of the American Chemical Society

A new, microfluidic temperature sensor system, based on a thermoresponsive conjugated polymer supramolecule, has been developed. By generating blue-phase polydiacetylene (PDA) sensor droplets using hydrodynamic instability, we were able to monitor the variation of fluorescent intensity of the droplets with respect to the flow temperature.

Organic ChemistryChemistry
3
Article|70 citations·2007
The moderating role of trust in manufacturer‐supplier relationships
Sungmin Ryu, Soonhong Min, Nobuhide Zushi
SJR Q1Journal of Business and Industrial Marketing

Purpose – The purpose of this paper is to verify the moderating role of trust in the relationships between environmental uncertainty and a manufacturer's propensity for vertical control over its supplier, and between environmental uncertainty and the manufacturer's satisfaction with the supplier performance. It also confirms a threshold effect of trust, i.e. the moderating role of trust is present up until a threshold value of trust is reached.

Management Information SystemsBusiness, Management and Accounting
4
Article|54 citations·2006
The environment and its impact on satisfaction with supplier performance: An investigation of the mediating effects of control mechanisms from the perspective of the manufacturer in the U.S.A.
Sungmin Ryu, Nermin Eyuboglu
SJR Q1Industrial Marketing Management
Organizational Behavior and Human Resource ManagementBusiness, Management and Accounting
5
Article|30 citations·2007
The effect of interfirm dependence structures on governance mechanisms
Sungmin Ryu, Hasan Arslan, Nizamettin Aydin
SJR Q1Journal of Purchasing and Supply Management
Strategy and ManagementBusiness, Management and Accounting
6
Article|19 citations·2011
Long-Term Orientation As A Determinant Of Relationship Quality Between Channel Members
Sungmin Ryu, Chul Woo Moon
International Business & Economics Research Journal (IBER)OA

This study assesses the effects of Long-Term Orientation culture on inter-organizational trust and conflict. This research examines the role of one important cultural factor, namely long-term orientation, as it relates to contractual relationships between manufacturers and their suppliers. As LTO cultures have become accepted as a crucial factor for describing nations, this study should prove invaluable to our understanding of inter-organizational relationships affected by differing levels of lo

Strategy and ManagementBusiness, Management and Accounting
7
Article|19 citations·2007
The relationship between unilateral and bilateral control mechanisms:The contextual effect of long-term orientation
Sungmin Ryu, Sertan Kabadayi, Christina Chung
SJR Q1Journal of Business Research
Management Information SystemsBusiness, Management and Accounting
8
Article|16 citations·2011
A cross‐cultural study of interfirm power structure and commitment: the effect of collectivism
Sungmin Ryu, Eun‐Ju Lee, Won Jun Lee
SJR Q1Journal of Business and Industrial Marketing

Purpose This study seeks to introduce the concept of collectivism, and to assess its impact on interfirm commitment in both high and low collectivist countries. Design/methodology/approach In evaluating the effects of bilateral power structures on commitment, the paper utilizes polynomial regression and the response surface approach. Findings Collectivism influenced a manufacturer's commitment to the relationship with its supplier only in Korea, but collectivism did not influence a manufacturer'

Organizational Behavior and Human Resource ManagementBusiness, Management and Accounting
9
Article|14 citations·2008
A cross-national study of manufacturer's power structures and control mechanisms: The moderating effect of group orientation culture
Sungmin Ryu, Nizamettin Aydin, Jeonpyo Noh
SJR Q1Industrial Marketing Management
Strategy and ManagementBusiness, Management and Accounting
10
Article|13 citations·2006
The Effect of External and Internal Environments on Interfirm Governance
Sungmin Ryu
SJR Q2Journal of Business-to-Business Marketing

ABSTRACT Research fielded among manufacturing companies has been used to examine the interactive effect of interdependence structure and environmental uncertainty on Interfirm governance where they coexist. An analysis from the responses of 137 purchasing managers in manufacturing firms supported the proposition that changes in the level of uncertainty due to external circumstances increase the extent to which the manufacturers monitor the suppliers when the interdependence magnitude is low. How

Strategy and ManagementBusiness, Management and Accounting
11
Article|12 citations·2011
The Effect Of LTO Culture On International Supply Chain Contracts
Sungmin Ryu, Martha E. Cook
SJR Q4Journal of Applied Business Research (JABR)OA

<p class="MsoNormal" style="text-justify: inter-ideograph; text-align: justify; margin: 0in 0.6in 0pt 0.5in;"><span style="font-size: 10pt;"><span style="font-family: Times New Roman;">Effective management of international supply chain relationships is critical in determining the success of the ever-growing cadré of international businesses where small cost differentials separate profitable enterprises from failed ones.<span style="mso-spacerun: yes;">&nbsp

Strategy and ManagementBusiness, Management and Accounting
12
Article|12 citations·2013
Effects of Network Embeddedness on the Relationship Between Environmental Volatility and Interfirm Contracts
Sungmin Ryu, Hye-Jeong Cho, Kyung‐Hee Kim
SJR Q2Journal of Business-to-Business Marketing

Purpose: This study examines the effects of an embedded network on the contractual relationship between exchange parties under conditions reflecting varying levels of environmental volatility and investigates the role of an important network factor—the embedded network—in the contractual relationship between manufacturers and their suppliers. Methodology: The empirical test was conducted with manufacturing companies in the context of manufacturer–supplier relationships. Construct measures were b

AccountingBusiness, Management and Accounting
13
Article|10 citations·2006
Does Culture Matter? Collectivism, Long-Term Orientation, and Supply Chain Management in Korea
Sungmin Ryu, Jang Hui Han, Jonathan M. Frank
International Journal of Internet and Enterprise Management

The existence of a high degree of inter-organisational Long-Term Orientation (LTO) is an important factor for developing a successful relationship among the supply chain members. Within a supply chain, a LTO fosters a better understanding by each exchange party, which in turn leads to a more cooperative relationship. This study introduces one aspect of culture: collectivism, and proposes that a collectivist culture can facilitate the development of a LTO among the members of a supply chain. Coll

Strategy and ManagementBusiness, Management and Accounting
14
Article|9 citations·2019
The relationship between network governance and unilateral governance in dynamic consumer demand
Park Minhye, Minjung Kim, Sungmin Ryu
SJR Q1Industrial Marketing ManagementOA

An important question for retailers is the extent to which control over suppliers should be maintained when there is uncertain consumer demand. This paper proposes that the level of network governance (high or low) affects retailers' level of unilateral control in uncertain consumer demands. The empirical results indicate that when there is a low level of network governance, retailers tend to increase the level of unilateral control over suppliers as consumer demand uncertainty increases. On the

Management Information SystemsBusiness, Management and Accounting
15
Article|7 citations·2009
Volatile Environments and Interfirm Governance: Does Trust Matter?
Sungmin Ryu, Yanghoon Lim, Heesook Hong
SJR Q2Journal of Business-to-Business Marketing

Purpose: Manufacturers in volatile environments should rely on governance mechanisms to reduce the risks inherent in those environments. However, it remains to be determined which governance mechanism a given manufacturer will develop in volatile environments in order to manage the relationship with its supplier. The principal objective of this study is to explain circumstances in which different governance mechanisms function under volatile environmental conditions. Methodology: The empirical t

MarketingBusiness, Management and Accounting

Research Areas

Strategy and ManagementOrganizational Behavior and Human Resource ManagementManagement Information SystemsAccountingSociology and Political ScienceMarketing

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