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Open Access
Article
Publication date: 15 May 2006

Yonghwa Park, Hun-Koo Ha and Oh Kyoung Kwon

This paper evaluates and assesses the competitiveness of airports by analyzing the efficiency of those in Northeast Asia. This research implemented Data Envelopment Analysis (DEA…

Abstract

This paper evaluates and assesses the competitiveness of airports by analyzing the efficiency of those in Northeast Asia. This research implemented Data Envelopment Analysis (DEA) to compare the competitiveness of airport efficiency and Decision Making Unit (DMU), which was selected by the top ranking freight operations among the airports in this region. Due to the lack of previous research with regard to the competitiveness of hub concentrated airports in air cargo volume, the variables have been screened for selection through referential documents and records related to air freight. Finally, aviation freight experts assisted in the final selection of the relevant variables for this research. The result of the analysis show that the larger airports in Northeast Asia are positively correlated with higher efficiency. In contrast, inefficient airports have suffered from over capacity or insufficient input.

Details

Journal of International Logistics and Trade, vol. 4 no. 1
Type: Research Article
ISSN: 1738-2122

Keywords

Open Access
Article
Publication date: 30 June 2021

Qingyu Qi and Oh Kyoung Kwon

This study explores the characteristics of high-speed rail (HSR) and air transportation networks in China based on the weighted complex network approach. Previous related studies…

Abstract

This study explores the characteristics of high-speed rail (HSR) and air transportation networks in China based on the weighted complex network approach. Previous related studies have largely implemented unweighted (binary) network analysis, or have constructed a weighted network, limited by unweighted centrality measures. This study applies weighted centrality measures (mean association [MA], triangle betweenness centrality [TBC], and weighted harmonic centrality [WHC]) to represent traffic dynamics in HSR and air transportation weighted networks, where nodes represent cities and links represent passenger traffic. The spatial distribution of centrality results is visualized by using ArcGIS 10.2. Moreover, we analyze the network robustness of HSR, air transportation, and multimodal networks by measuring weighted efficiency (WE) subjected to the highest weighted centrality node attacks. In the HSR network, centrality results show that cities with a higher MA are concentrated in the Yangtze River Delta and the Pearl River Delta; cities with a higher TBC are mostly provincial capitals or regional centers; and cities with a higher WHC are grouped in eastern and central regions. Furthermore, spatial differentiation of centrality results is found between HSR and air transportation networks. There is a little bit of difference in eastern cities; cities in the central region have complementary roles in HSR and air transportation networks, but air transport is still dominant in western cities. The robustness analysis results show that the multimodal network, which includes both airports and high-speed rail stations, has the best connectivity and shows robustness.

Details

Journal of International Logistics and Trade, vol. 19 no. 2
Type: Research Article
ISSN: 1738-2122

Keywords

Open Access
Article
Publication date: 30 June 2011

Yan Zhang, Oh Kyoung Kwon and Hwa-Joong Kim

The strategic location of city logistics facilities may help to establish more efficient urban logistics systems, reduce social and environmental costs of urban freight transport…

Abstract

The strategic location of city logistics facilities may help to establish more efficient urban logistics systems, reduce social and environmental costs of urban freight transport, and improve urban traffic conditions. In addition, it may allow a number of shippers or freight carriers to jointly operate freight vehicles and terminals or information systems while allowing them to have the capability to provide higher levels of services to their customers. This paper considers the problem of selecting a location for a city logistics facility while considering linguistic factors. This paper identifies the important factors in the selection of a location for a city logistics facility by performing a case study which applies the analytic hierarchy process method on data from Chongqing, China. The optimal location in Chongqing is then determined by using the fuzzy synthetic evaluation method. The results of this paper are expected to help municipal governments select appropriate locations for city logistics facilities and quantify the advantages and disadvantages of alternative locations.

Details

Journal of International Logistics and Trade, vol. 9 no. 1
Type: Research Article
ISSN: 1738-2122

Keywords

Open Access
Article
Publication date: 30 April 2018

Oh Kyoung Kwon, Ha-Neul Han and Hye-Min Chung

Previous approaches have employed the SCOR model for evaluating supply chain management, and in particular, have focused on cash-to-cash cycle time (C2C). This paper reviews the…

Abstract

Previous approaches have employed the SCOR model for evaluating supply chain management, and in particular, have focused on cash-to-cash cycle time (C2C). This paper reviews the Supply Chain Index (SCI) developed by Supply Chain Insight LLC, which evaluates supply chain performance based on balance, strength, and resiliency. The main aim of this study is to review SCI as a new methodology to measure performance management, as well as to apply C2C for a case study of Korean firms, to compare and present differences for further complementary application.

Details

Journal of International Logistics and Trade, vol. 16 no. 1
Type: Research Article
ISSN: 1738-2122

Keywords

Open Access
Article
Publication date: 31 December 2019

Oh Kyoung Kwon, Soobi Lee, Hye Min Chung, Prem Chhetri and Ok Soon Han

This study aims to evaluate the network robustness of major Asian airlines and to explore which airport types have the greatest impact on robustness. We also analyze airports’…

Abstract

This study aims to evaluate the network robustness of major Asian airlines and to explore which airport types have the greatest impact on robustness. We also analyze airports’ specific brokerage roles and their impacts on the robustness of the entire air route network. We select 10 major Asian full-service airlines that operate the main passenger terminals at the top-ranked hub airports in Asia. Data is collected from the Official Airline Guide passenger route dataset for 2017. The results of the network robustness analysis show that Air China and China Eastern Airlines have relatively high network robustness. In contrast, airlines with broader international coverage, such as Japan Airlines, Korean Air, and Singapore Airlines have higher network vulnerability. The measure of betweenness centrality has a greater impact on the robustness of air route networks than other centrality measures have. Furthermore, the brokerage role analysis shows that Chinese airports are more influential within China and Asia but are less influential globally when compared to other major hub airports in Asia. Incheon International Airport, Singapore Changi Airport, Hong Kong International Airport, and Narita International Airport play strong “liaison” roles. Among the brokerage roles, the liaison role has a greater impact on the robustness of air route networks.

Details

Journal of International Logistics and Trade, vol. 17 no. 4
Type: Research Article
ISSN: 1738-2122

Keywords

Open Access
Article
Publication date: 31 December 2019

Oh Kyoung Kwon, Soobi Lee, Hye Min Chung, Prem Chhetri and Ok Soon Han

This study aims to evaluate the network robustness of major Asian airlines and to explore which airport types have the greatest impact on robustness. We also analyze airports’…

Abstract

This study aims to evaluate the network robustness of major Asian airlines and to explore which airport types have the greatest impact on robustness. We also analyze airports’ specific brokerage roles and their impacts on the robustness of the entire air route network. We select 10 major Asian full-service airlines that operate the main passenger terminals at the top-ranked hub airports in Asia. Data is collected from the Official Airline Guide passenger route dataset for 2017. The results of the network robustness analysis show that Air China and China Eastern Airlines have relatively high network robustness. In contrast, airlines with broader international coverage, such as Japan Airlines, Korean Air, and Singapore Airlines have higher network vulnerability. The measure of betweenness centrality has a greater impact on the robustness of air route networks than other centrality measures have. Furthermore, the brokerage role analysis shows that Chinese airports are more influential within China and Asia but are less influential globally when compared to other major hub airports in Asia. Incheon International Airport, Singapore Changi Airport, Hong Kong International Airport, and Narita International Airport play strong “liaison” roles. Among the brokerage roles, the liaison role has a greater impact on the robustness of air route networks.

Details

Journal of International Logistics and Trade, vol. 17 no. 4
Type: Research Article
ISSN: 1738-2122

Keywords

Article
Publication date: 2 April 2024

Chris Voth and Kyoung June Yi

This study uncovers the challenges and coping mechanisms related to stigma and discrimination experienced by gay professional team sport athletes.

Abstract

Purpose

This study uncovers the challenges and coping mechanisms related to stigma and discrimination experienced by gay professional team sport athletes.

Design/methodology/approach

Utilizing interpretive phenomenological analysis, this study recruited six gay athletes in professional team sports. Data were collected through virtual one-on-one semi-structured interviews, along with field notes and reflexive journaling, and were thematically analyzed.

Findings

The first theme highlights the discrimination and marginalization experienced by gay athletes in professional team sports, as well as the perceived differences between these athletes and their heterosexual counterparts. The second theme includes anecdotes illustrating their experiences of exclusion, along with counter-stories that resist marginalization. The last theme comprises stories that underscore the lack of acceptance and advocacy, emphasizing the awareness education aimed at making the sporting realm more inclusive.

Research limitations/implications

Despite the extensive recruiting efforts for this study, numerous sports and countries remain unexplored. Follow-up studies are required to fill this gap. As this study was initiated, additional research is needed to provide information on athletes who are still in the closet. Cross-comparisons between gay athletes and their heterosexual teammates can help bridge the gap in perspectives.

Practical implications

Participants emphasized collective efforts in creating inclusive and welcoming environments for gay athletes, including anti-discrimination policies related to language use, showers and relocation adjustments.

Social implications

Participants have put forth concrete recommendations for enhancing inclusivity within team sport environments and society at large, including proposals for early educational initiatives within the school systems.

Originality/value

This is the first empirical study that focuses on the experiences of gay professional team sport athletes.

Details

Equality, Diversity and Inclusion: An International Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2040-7149

Keywords

Article
Publication date: 6 November 2017

Yeon Kyoung Joo and Youngseek Kim

The purpose of this research is to investigate the factors that influence engineering researchers’ data reuse behaviours.

Abstract

Purpose

The purpose of this research is to investigate the factors that influence engineering researchers’ data reuse behaviours.

Design/methodology/approach

The data reuse behaviour model of engineering researchers was investigated by using a survey method. A national survey was distributed to engineering researchers in the USA, and a total of 193 researchers responded.

Findings

The results showed that perceived usefulness, perceived concerns and norms of data reuse have significant relationships with attitudes toward data reuse. Also, attitudes toward data reuse and the availability of data repositories were found to have significant influences on engineering researchers’ intention to reuse data.

Research limitations/implications

This research used a combined theoretical framework by integrating the theory of planned behaviour (TPB) and the technology acceptance model (TAM). The combination of the TPB and the TAM effectively explained engineering researchers’ data reuse behaviours by addressing individual motivations, norms and resource factors.

Practical implications

This research has practical implications for promoting more reliable and beneficial data reuse in the engineering community, including encouraging positive motivations toward data reuse, building community norms of data reuse and setting up more data repositories.

Originality value

As prior research on data reuse mainly used interviews, this research used a quantitative approach based on a combined theoretical framework and included diverse research constructs which were not tested in the previous research models. As one of the initial studies investigating data reuse behaviours in the engineering community, the current research provided a better understanding of data reuse behaviours and suggested possible ways to facilitate engineering researchers’ data reuse behaviours.

Details

The Electronic Library, vol. 35 no. 6
Type: Research Article
ISSN: 0264-0473

Keywords

Article
Publication date: 14 December 2018

Arati Maleku, Youn Kyoung Kim and Guijin Lee

While social cohesion is important for the promotion of immigrant health, language is a core component through which immigrant groups establish social connections. Since language…

Abstract

Purpose

While social cohesion is important for the promotion of immigrant health, language is a core component through which immigrant groups establish social connections. Since language is a vehicle through which immigrant groups establish social linkages and that English language proficiency has been established as a virtual requirement for full participation in US society, the purpose of this paper is to examine the role of language in establishing social cohesion affecting immigrant health.

Design/methodology/approach

Using the 2012 California Health Interview Survey, the authors investigated the role of language efficacy in the relationship between social cohesion and utilization of healthcare among immigrant groups with good and poor health statuses (n=11,134). Mediation analyses were conducted using PROCESS Macro.

Findings

The direct effect of social cohesion on healthcare utilization and the effect of English language efficacy on healthcare utilization were significant for both groups. English language efficacy was a significant mediator between social cohesion and healthcare utilization among immigrants with good health statuses.

Research limitations/implications

Limitations include generalizability issues across immigrant sub-populations, limited measures in terms of English language efficacy and limitations with measures variables such as length of stay.

Social implications

This study highlights that language is the channel that plays a crucial role not only to establish and maintain social cohesion for positive health outcomes, but also the ripple effects of promoting trust, belonging, opportunity of upward mobility and inclusion.

Originality/value

The findings of the study add value to other pertinent issues of linguistic diversity, positive social relationships and well-being of diverse communities.

Details

International Journal of Migration, Health and Social Care, vol. 15 no. 1
Type: Research Article
ISSN: 1747-9894

Keywords

Open Access
Article
Publication date: 31 May 2017

Bohyun Yoon, Kyoung-Woo Sohn and Won-Suk Liu

Recently, due to its passive property, the smart beta has become one of the most interest topics in searching the alpha. In this paper, we attempt to show whether the smart beta…

92

Abstract

Recently, due to its passive property, the smart beta has become one of the most interest topics in searching the alpha. In this paper, we attempt to show whether the smart beta strategy generate abnormal excess return, in tradition, which are known as the exclusive property of active fund. Further, we attempt to verify the key drivers of the alpha in the smart beta portfolios. For this purpose, we categorize various smart beta strategies by their scheme for asset picking and risk reduction. Then, based on our categorization, we evaluate and analyze the performance of smart beta strategy in perspective. Our empirical analyses show following results: applying alternative risk reduction scheme to traditional market index portfolio would results in enhanced efficiency; however, without combining any asset picking scheme, the performance of the smart beta portfolio seems explained by the Fama-French 3 factor. Our results lead us to conjecture that it is not the portfolio weighting scheme alone but in association with asset selection scheme that generate significant alpha in the smart beta strategy. In actual practice, our results imply that any passive fund may succeed in seeking the alpha without active strategy, thereby avoiding the risk of market timing and saving the management cost.

Details

Journal of Derivatives and Quantitative Studies, vol. 25 no. 2
Type: Research Article
ISSN: 2713-6647

Keywords

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