Dong-Kyu Kim and Minyoung Park
Sustainable transport has become a new paradigm offering efficient, equitable, and pro-environment transport services. Many intermodal freight systems, especially those for…
Abstract
Sustainable transport has become a new paradigm offering efficient, equitable, and pro-environment transport services. Many intermodal freight systems, especially those for port-to-rail networks, consist of multiple routes starting from and ending at the same port in order to exploit economies of scale. It is of interest to railway operators, therefore, to improve the efficiency of the system by finding the optimal fleet size (the number of cars assigned to a route) and frequency for each route. This paper proposes a model which determines the optimal frequency of each route under the total fleet size constraint for the one-to-many distribution. Trains carry items from one port to their destinations on their predetermined routes. This paper focuses on situations in which items from one port are transported to many destinations via railroads. The tradeoffs between transportation and inventory costs determine optimal frequency under the total fleet size and capacity constraints. The optimal frequency and fleet size of each route are calculated and then updated at the end of each step of the model. The model that we have developed in this paper is validated by port-to-rail freight data from actual shipments in Korea. The results of the analysis show that the proposed model can provide a more reliable and realistic representation of the real one-to-many distribution than the other alternatives which are commonly used. This study not only forms the theoretical basis of an effective and rational freight operation, but it also contributes to the assessment of the existing and planned logistics systems.
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Eunyoung Han, Kyung Kyu Kim and Ae Ri Lee
The purpose of this paper is to investigate which exchange structure, direct or generalized exchange, better promotes community solidarity in online communities (OCs)…
Abstract
Purpose
The purpose of this paper is to investigate which exchange structure, direct or generalized exchange, better promotes community solidarity in online communities (OCs). Furthermore, it examines the moderating effects of activity intensity on the relationship between exchange structure and community solidarity in order to resolve the conflicts in extant literature.
Design/methodology/approach
The research model is developed based on the social exchange theory (SET). It also accommodates social structures as determinants of exchange structure, such as organizational identity orientation (OIO) and distributive justice norms. Data in this study were collected from 376 OCs through an e-mail survey.
Findings
Generalized exchange has stronger effects on community solidarity than direct exchange. Furthermore, there was a significant difference in the impact on community solidarity between generalized exchange and direct exchange at high-activity intensity levels, whereas no significant differences were found at low-activity intensity conditions. OIO significantly influences exchange structure. Additionally, equality norm significantly influences generalized exchange, whereas need norm significantly influences direct exchange.
Originality/value
In information systems research, there have not been any attempts to identify the determinants of exchange structure in OCs. Furthermore, only a couple of studies have empirically investigated the relationship between exchange structure and OC solidarity, and yet they found conflicting results. This research makes contributions to an enhancement of theoretical precision of the SET in two ways: by empirically examining the determinants of exchange structure, and by introducing a third variable, activity intensity, as a moderator of the relationship between exchange structure and OC solidarity.
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Kyu Kim and Gal Zauberman
This paper aims to examine the effect of music tempo on impatience in intertemporal tradeoff decisions. It finds that fast (vs slow) tempo music increases impatience. This occurs…
Abstract
Purpose
This paper aims to examine the effect of music tempo on impatience in intertemporal tradeoff decisions. It finds that fast (vs slow) tempo music increases impatience. This occurs because fast (vs slow) tempo music makes temporal distance, and hence the waiting time until the receipt of delayed benefits, feel subjectively longer.
Design/methodology/approach
The study tests the hypotheses through four laboratory experiments.
Findings
In Studies 1a (N = 88) and 1b (N = 98), the results demonstrate that when participants listen to fast (vs slow) tempo music, they judge temporal distance to be longer. In Study 2 (N = 94), the results demonstrate that when participants listen to fast (vs slow) tempo music, they become more impatient when considering a smartphone purchase. In Study 3 (N = 218), the results demonstrate that when participants listen to fast (vs slow) tempo music, they become more impatient when considering a gift certificate, and that this delay discounting effect is attributable to the change in their temporal distance judgment.
Research limitations/implications
The current research reports a novel factor that influences impatience in intertemporal decisions and temporal distance judgment.
Practical implications
This research provides useful guidelines for retail managers and marketers regarding the effect of background music in stores.
Originality/value
This is the first study demonstrating a music tempo effect on temporal distance judgment and impatience in intertemporal tradeoff decisions.
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Young Kyu Kim, Mark Yi-Cheon Yim, Eunjin (Anna) Kim and William Reeves
Given that many consumers are skeptical about environmentally based advertising campaigns, the purpose of this study is to propose an optimized message strategy to facilitate…
Abstract
Purpose
Given that many consumers are skeptical about environmentally based advertising campaigns, the purpose of this study is to propose an optimized message strategy to facilitate consumer engagement with green messages in social media contexts.
Design/methodology/approach
Four empirical studies are conducted using self-report questionnaires to test proposed hypotheses with a focus on the interplay between claim specificity and benefit appeals in green advertising on social media.
Findings
The current study examines the interaction effects of claim specificity and benefit appeals on consumer engagement in social media. Specifically, the results reveal that when the message claim is abstract, using other-benefit appeals produces more positive consumer engagement than using self-benefit appeals. Moreover, the results illustrate that self-enhancement motivates consumers to engage with green product advertising messages when the advertising appeal is abstract and the advertising message is associated with benefits for others. Finally, it is found that consumers’ self-construal level moderates the interaction effect of claim specificity and benefit appeals type on consumer engagement on social media.
Practical implications
This paper has practical implications to both social media managers and advertisers in the green product industry: a match with advertising claim specificity and construal level (i.e. social distance: self-benefit vs other-benefit) should be ensured to increase consumer engagement on social media. In addition, self-enhancement and self-construal should be considered for a better message strategy in social media contexts.
Originality/value
The findings make important contributions to the literature in that we extend the applications of construal level theory to social media contexts as a valid theoretical tool to identify optimized green message strategies. As such, it provides future researchers and practitioners in the domain of green campaigns with useful guidelines to boost more consumption of green products.
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Jae-Ahm Park, Jun-Mo Sung, Jae-Man Son, Kyunga Na and Suk-Kyu Kim
The purpose of this paper is to examine the relationships among an individual athlete’s brand equity, overall spectator satisfaction at sporting events and behavioral intentions.
Abstract
Purpose
The purpose of this paper is to examine the relationships among an individual athlete’s brand equity, overall spectator satisfaction at sporting events and behavioral intentions.
Design/methodology/approach
The convenience sampling method was used when approaching potential participants among spectators of the LG Whisen Rhythmic All Stars 2013, a sporting event in which celebrated sports players perform choreographed dance routines. A total of 350 surveys were completed in Go-Yang, South Korea. Of the surveys collected, 20 were discarded due to excessive missing values, resulting in 330 usable surveys.
Findings
Using structural equation modeling, this study found that the brand equity of an individual athlete positively and directly affects the overall sporting event satisfaction and behavioral intentions, including re-purchase and word-of-mouth intentions among event attendees, which are factors that are mediated indirectly by satisfaction.
Originality/value
This study shows that the brand equity of an individual athlete can increase the spectator satisfaction levels in a similar manner to the brand equity of a sports team or product.
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Bumsoo Kim, Eric Cooks and Seong-Kyu Kim
This study aims to explore the extent to which Twitter users engaged in uncivil and morally questionable expressions in their comments about specific Asian countries and citizens…
Abstract
Purpose
This study aims to explore the extent to which Twitter users engaged in uncivil and morally questionable expressions in their comments about specific Asian countries and citizens. The integrated threat theory (ITT) was used to formulate questions surrounding incivility and moral foundations within Twitter discourses related to the COVID-19 pandemic.
Design/methodology/approach
The authors collected tweets and retweets posted by English-speaking Twitter users in the United States (US) across the following three phases: (1) initial discovery of COVID-19 in China, (2) high US mortality rate from COVID-19 and (3) the announcement that a vaccine would soon be available in the US.
Findings
The authors found a significant difference in uncivil tweets posted in cities with higher levels of reported hate crimes against Asians than cities with low levels. Lastly, English-speaking Twitter users tended to employ moral virtue words and moral vice words when discussing China and Chinese culture/populations.
Research limitations/implications
The bags-of-words employed are limited in capturing nuanced and metaphorical terms. In addition, the analysis focused solely on Tweets composed in English and thus did not capture the thoughts and opinions of non-English speakers. Lastly, this study did not address all Asian countries. In this sense, the findings of this study might not be applicable to Tweets about other nations.
Practical implications
Given that many Twitter users tend to use terms of moral virtue in support of Asians and Asian communities, the authors suggest that non-governmental organization administrators provide morally supportive social media campaigns that encourage users to engage in civil discourse.
Social implications
These findings have theoretical implications as the frameworks of integrated threats and moral foundations were used to offer group-level explanations for online behavior. Additional research is needed to explore whether these frameworks can be used to explain negativity in other communication environments.
Originality/value
This study expands the findings of prior studies that identified the extent to which Twitter users express hate speech, focusing on general Twitter discourse across three specific periods of the pandemic: degrees of incivility and moral foundations, and comparison of incivility based on the prevalence of reported hate crimes.
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Hyeon-Tae Im, Hyun-Su Kang, Hyeon-Goo Kang, Hyo Kyu Kim, Jun Choi, Ki Beom Park, Taeg Woo Lee, Chan Bin Mo and Hyung-Ki Park
The purpose of this paper is to examine the effect of internal pores on the tensile properties of a Co–Cr–Mo alloy fabricated by selective laser melting (SLM).
Abstract
Purpose
The purpose of this paper is to examine the effect of internal pores on the tensile properties of a Co–Cr–Mo alloy fabricated by selective laser melting (SLM).
Design/methodology/approach
The size and volume fraction of pores were controlled through high temperature annealing (HTA) and hot isostatic pressing (HIP).
Findings
After HTA, the size and fraction of pores decreased compared with the as-built SLM sample, and no pores were observed after HIP. Tensile tests of the HTA and HIP samples showed nearly similar tensile deformation behavior. From the results, the authors found that the size of the internal pores formed in the SLM process had little effect on the tensile properties. The as-built SLM sample had less elongation than the HTA and HIP samples, which would not the effect of porosity, but rather the effect of the residual stress and the retained ε phase after the SLM process.
Originality/value
Although pores are a main factor that influence the mechanical properties, the effect of pores on the tensile properties of Co–Cr–Mo alloys fabricated by SLM has not been studied. Therefore, in this study, the effect of pores on the tensile properties of a Co–Cr–Mo alloy fabricated by SLM was studied.
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Jun-Phil Uhm, Hyun-Woo Lee, Jin-Wook Han and Dong-Kyu Kim
The purpose of this study is to examine the effect of background music on consumer's psychological and physiological responses when watching sports advertisements. We investigated…
Abstract
Purpose
The purpose of this study is to examine the effect of background music on consumer's psychological and physiological responses when watching sports advertisements. We investigated how consumers' exposure to background music affects emotional arousal, attention, brand attitude and purchase intentions; and further tested consumers' information processing by using the same measures. Effects of music on viewer responses were hypothesized using arousal theory while the information processing was hypothesized using hierarchy-of-effects model.
Design/methodology/approach
We employed a between-subjects experimental design with random assignment. Fifty-four participants were recruited with 27 in an experimental group and 27 in a control group. Quantitative electroencephalogram (qEEG) and self-report measures were used to assess information processing. A multivariate analysis of covariance was conducted to compare the mean differences of variables between the groups. Partial least squares algorithm and bootstrapping were performed to further explore the relationships among the measures.
Findings
Mean differences indicated that the background music exposed group's emotional arousal, attention, brand attitude and purchase intention were significantly higher than those of the non-exposure group. Path analysis showed that the level of arousal induced by watching sports advertisements affected attention, attention affected brand attitude and brand attitude affected purchase intention. Indirect paths from arousal to brand attitude and attention to purchase intention were significant.
Originality/value
This study provides practical implications for sports marketers regarding methods to increase the effectiveness of sport advertisement. Results might contribute theoretically to the sports advertisement field by demonstrating the relationship between physiological and marketing-effect factors. Our method of measuring physiological response using qEEG is also expected to influence physiological measurement in sports marketing.
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Byoung-Kyu Min and Tong Suk Kim
We employ mean‐variance spanning and intersection tests in the stochastic discount factor approach to examine the potential diversification benefits of international investments…
Abstract
We employ mean‐variance spanning and intersection tests in the stochastic discount factor approach to examine the potential diversification benefits of international investments from the perspective of Korean investors. Our results show that the addition of international regional indices to the set of domestic equities provides significant diversification benefits. However, the source and economic magnitude of diversification benefits differ across international markets. Furthermore, we find that when investors manage their portfolio based on instrument variables, they can not only expand their investment opportunities by investing in international assets, but also increase the efficiency gain of diversification benefits.
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After the Korean War, South Korean politics was dominated by national security concerns. Reversing Carl von Clausewitz's well-known dictum, in South Korea, “politics is the…
Abstract
After the Korean War, South Korean politics was dominated by national security concerns. Reversing Carl von Clausewitz's well-known dictum, in South Korea, “politics is the continuation of war by other means.” Until the late 1980s, politics in South Korea was far from democratic. South Korea had five direct presidential elections (1987, 1992, 1997, 2002, and 2007) and six national assembly elections (1988, 1992, 1996, 2000, 2004, and 2008) after the democratic transition of 1987. In 1992, a civilian candidate, Young Sam Kim, was elected president. Young Sam Kim (1993–1998) prosecuted and punished former generals turned presidents Doo Hwan Chun (1980–1988) and Tae Woo Roh (1988–1993) for corruption, mutiny and treason in 1995. Dae Jung Kim (1998–2003) was elected president in 1997. For the first time in South Korean political history, regime change occurred between a ruling party and an opposition party.
In this chapter, the change and continuity of civil–military relations through the fluctuating dynamics of the democratic transition and consolidation in South Korea is examined. A positive consolidation of democratic reform is one that, while securing indisputable civilian supremacy, grants the military enough institutional autonomy for the efficient pursuit of its mission. Civilian supremacy should be institutionalized not only by preventing military intervention in civilian politics but also by ensuring civilian control over the formation and implementation of national defense policy.
In sum, despite three terms of civilian presidency, civilian supremacy has not yet fully institutionalized. Although significant changes in civil-military relations did occur after the democratic transition, they were not initiated by elected leaders with the intention of establishing a firm institutional footing for civilian supremacy. South Korea's political leaders have not crafted durable regulations and institutions that will sustain civilian control over the military.
More than six decades, Korea is still divided. The most highly militarized zone in the world lies along the demilitarized zone. How to draw the line prudently between seeking national security and promoting democracy shall be the most delicate task facing all the civilian regimes to come in South Korea. That mission will remain challenging not only for civilian politicians but also for military leaders.