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Open Access
Article
Publication date: 31 December 2009

Chang-Yeoul Choi and Joo-Young Lee

Since the declaration of reform and market opening from China in 1990, China has drawn much attention from the world thanks to its rapid economic growth and its emergence as the…

Abstract

Since the declaration of reform and market opening from China in 1990, China has drawn much attention from the world thanks to its rapid economic growth and its emergence as the world's major consumer market and the center of the global economy. Moreover, it established the new trade order, making East Asia the center of the new trade trend as it becomes a manufactural and sales stronghold of multinational companies. The Chinese distribution market is expected to show a high growth rate by 2010 and it draws attention as a new business sector which can bring huge profits. However, advancement of the Chinese distribution industry now faces systemic problems and research on such problems is insufficient. Therefore, in this study we will conduct SWOT analysis based on previous studies on the Chinese distribution industry and use it as a ground to propose strategic solutions for development.

Details

Journal of International Logistics and Trade, vol. 7 no. 2
Type: Research Article
ISSN: 1738-2122

Keywords

Article
Publication date: 30 November 2017

Sora Shin, Hae-Hyun Choi, Yung Bin Kim, Byung-Hee Hong and Joo-Young Lee

The purpose of this paper is to evaluate the effects of intermittent and continuous heating protocols using graphene-heated clothing and identify more effective body region for…

Abstract

Purpose

The purpose of this paper is to evaluate the effects of intermittent and continuous heating protocols using graphene-heated clothing and identify more effective body region for heating in a cold environment.

Design/methodology/approach

Eight males participated in five experimental conditions at an air temperature of 0.6°C with 40 percent relative humidity: no heating, continuous heating the chest, continuous heating the back, intermittent heating the chest, and intermittent heating the back.

Findings

The results showed that the electric power consumption of the intermittent heating protocol (2.49 W) was conserved by 71 percent compared to the continuous protocol (8.58 W). Rectal temperature, cardiovascular and respiratory responses showed no significant differences among the four heating conditions, while heating the back showed more beneficial effects on skin temperatures than heating the chest.

Originality/value

First of all, this study was the first report to evaluate cold protective clothing with graphene heaters. Second, the authors provided effective intermittent heating protocols in terms of reducing power consumption, which was able to be evaluated with the characteristics of fast-responsive graphene heaters. Third, an intermittent heating protocol on the back was recommended to keep a balance between saving electric power and minimizing thermal discomfort in cold environments.

Details

International Journal of Clothing Science and Technology, vol. 29 no. 6
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 30 March 2020

Yelin Ko, Sora Shin, Yong Seok Choi, Byung-Hee Hong, Sang-Yoon Park and Joo-Young Lee

The purpose of the study was to explore heat-accumulative and thermal-conductive characteristics of copper-graphene composite film (Cu-G film) while applying it to a human-skin…

Abstract

Purpose

The purpose of the study was to explore heat-accumulative and thermal-conductive characteristics of copper-graphene composite film (Cu-G film) while applying it to a human-skin analogue.

Design/methodology/approach

In the preliminary experiment, the authors evaluated the thermal conductive characteristics of the Cu-G film in three covered conditions (no film, copper film, and Cu-G film conditions). For the first factorial experiment, the heat-accumulative properties over heated pig skin were compared at air temperatures of 10, 25 and 35°C. For the second factorial experiment, 105 trials were conducted on pig skin by combining air temperatures, trapped air volumes, and numbers of film layers.

Findings

The results from the preliminary experiment showed that the Cu-G film distributed the surface heat to the outside of the Cu-G film, which resulted in even distribution of heat inside and outside the Cu-G film, whereas the copper film accumulated heat inside the copper film. The human-skin analogue of pig skin, however, showed the opposite tendency from that of the plastic. The pig-skin temperatures beneath the Cu-G film were higher than those beneath the copper film, and those differences were remarkable at the air temperature of 10°C. The accumulative heat was affected by the trapped air volume, fit to the skin, and number of Cu-G film layers.

Originality/value

In conclusion, the Cu-G film more effectively accumulated heat on the human-skin analogue than copper film, and those effects were more marked in cold environments than in mild or hot environments.

Details

International Journal of Clothing Science and Technology, vol. 32 no. 4
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 20 July 2021

Yoon Jeong Baek, Seung-Hyun Kim, Sayup Kim, Eui-Sang Yoo and Joo-Young Lee

The purpose of the present study was to evaluate the effect of air mattress pressure on sleep quality.

Abstract

Purpose

The purpose of the present study was to evaluate the effect of air mattress pressure on sleep quality.

Design/methodology/approach

Ten young healthy males participated in all hard surface [AH], shoulder soft [SS] and shoulder and hip soft mattress [SHS] conditions. The surface pressure for SS and SHS were set at their preferred levels.

Findings

The results showed that sleep efficiencies were over 95% for all the three conditions; there were no significant differences in individual sleep variables among the three conditions, but overall sleep quality was better for SS than AH (p = 0.065); heart rates during sleep was greater for AH than the other two conditions (p < 0.1); and a stronger relationship between clothing and bed microclimate humidity were found for SS and SHS than that for AH.

Research limitations/implications

These results indicated that the both pressure relief air mattresses that were set at their own preferred levels provided high quality sleep with no marked differences.

Practical implications

Air pressure relief mattresses can improve sleep quality of healthy individuals during sleep at night. The results can be used to understand appropriate pressure distribution on surface mattress according to body region, and also to develop algorithms to provide optimum sleep using mattresses with surface pressure control by body region.

Originality/value

The present study found that the shoulder and/or hip pressure relief air mattresses that were set at their own preferred levels provided high quality sleep with no marked differences.

Details

International Journal of Clothing Science and Technology, vol. 34 no. 2
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 14 June 2011

Joo‐Young Lee, Eun‐Sook Ko, Hyo‐Hyun Lee, Jae‐Young Kim and Jeong‐Wha Choi

The purpose of this paper is to examine differences between thermal insulation calculated by a global and a serial method using a thermal manikin, in comparison with human trials.

Abstract

Purpose

The purpose of this paper is to examine differences between thermal insulation calculated by a global and a serial method using a thermal manikin, in comparison with human trials.

Design/methodology/approach

A total of 150 single garments and 38 clothing ensembles were assessed using the manikin; 26 seasonal clothing ensembles were selected for human trials.

Findings

The results showed that total insulation of single garments was 16 percent higher in the serial method than in the global method. The difference was higher in garments with smaller covering area per unit garment mass (e.g. winter garments). For seasonal clothing ensembles, the serial values were 39.2 percent (0.18 clo) for spring/fall wear, 62.6 percent (0.15 clo) for summer wear and for winter wear 64.8 percent (0.69 clo) greater than the global values. The clothing insulation by the global method was systemically lower in all 26 seasonal ensembles than values by human trials, which suggests that the values by the global calculation can be more accurately corrected with human testing data.

Originality/value

The paper shows that values by the serial calculation were lower in spring/fall and summer ensembles but greater in winter garments than values collated by human trials. It suggests that the serial values had a lower validity when compared with thermal insulation values collated from human trials.

Details

International Journal of Clothing Science and Technology, vol. 23 no. 2/3
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 4 March 2016

Huiju Park, Soo-kyung Hwang, Joo-Young Lee, Jintu Fan and Youngjin Jeong

This paper investigated the impact of the distance of the heating unit from the body in a multi-layered winter clothing system on effective thermal insulation and heating…

662

Abstract

Purpose

This paper investigated the impact of the distance of the heating unit from the body in a multi-layered winter clothing system on effective thermal insulation and heating efficiency.

Design/methodology/approach

To identify changes in the thermal insulation and heating efficiency of electrical heating in different layers inside a winter clothing ensemble, a series of thermal manikin tests was conducted. A multi-layered winter ensemble with and without activation of a heating unit was tested on the thermal manikin under two different ambient temperature conditions (10°C and -5°C).

Findings

Results show that the effective thermal insulation of test ensembles increased by 5-7% with the activation of the heating unit compared to that without the activation. The closer the heating unit to the body, the higher the effective thermal insulation was in both ambient temperature conditions. This trend was more significant at lower ambient temperature.

Research limitations/implications

The results of this study indicate that providing electric heating next to the skin is the most effective in increasing effective thermal insulation and decreasing body heat loss in both ambient temperature (-5°C and 10°C). This trend was more remarkable in colder environment at -5°C of ambient temperature as evidenced by sharp decrease in heating efficiency and effective thermal insulation with an increase in distance between the manikin skin and heating unit at -5°C of ambient temperature compared to at 10°C of ambient temperature.

Practical implications

Based on the results, it is expected that proximity heating next to the skin, in cold environment, may reduce the weight and size of the battery for the heating unit because of the higher efficiency of electric heating and the potentially immediate perception of warmth supported by the greatest increase in effective thermal insulation, as well as the lowest heat loss that comes with activation of heating on the first layer in cold environment.

Originality/value

The finding of this study provides guidelines to sportswear designers, textile scientists, sports enthusiasts, and civilians who consider electric heating benefits for improved thermal comfort and safety in cold environments, especially in the areas of outdoor and winter sports and in military service. The results of this study indicate that providing electric heating next to the skin is the most effective in increasing effective thermal insulation and decreasing body heat loss in both ambient temperature (-5°C and 10°C).

Details

International Journal of Clothing Science and Technology, vol. 28 no. 2
Type: Research Article
ISSN: 0955-6222

Content available
Article
Publication date: 22 February 2013

104

Abstract

Details

International Journal of Clothing Science and Technology, vol. 25 no. 1
Type: Research Article
ISSN: 0955-6222

Keywords

Book part
Publication date: 2 December 2016

Joo-Young Park and Dong-One Kim

This paper examines the role of cultural values measured as collectivism, face-saving, and conflict-avoidance, in predicting employee voice behavior. Using data (n = 198…

Abstract

This paper examines the role of cultural values measured as collectivism, face-saving, and conflict-avoidance, in predicting employee voice behavior. Using data (n = 198) collected from automotive-industry employees in the United States (US) and Korea, several interesting findings emerged. First, and most notably, for a “leaver” who chooses the exit option, culture does not matter, such that none of the three cultural values have a significant association with the exit option across countries. Second, for a “stayer,” who chooses the voice, loyalty, or neglect option, culture does matter in that cultural-specific values, such as collectivism, face-saving, and conflict-avoidance were found to affect employees nonexit options in the Korean sample, but not in the U.S. sample. The results of this study suggest that these three cultural values guide and predict employee voice behavior. Additionally, the results of this study confirm that job alternatives are a significant predictor of the exit option across cultures. This study therefore presents strong empirical evidence of the effect of culture on employee voice behavior and increases our understanding of employee voice behavior across cultures.

Details

Employee Voice in Emerging Economies
Type: Book
ISBN: 978-1-78635-240-8

Keywords

Abstract

Details

Transformation of Korean Politics and Administration: A 30 Year Retrospective
Type: Book
ISBN: 978-1-80382-116-0

Article
Publication date: 13 August 2020

Byoung Kwon Choi, Hyoung Koo Moon and Young Ran Joo

Based on the multiple domain perspective and self-identity theory, this study aims to investigate the effect of job applicants' volunteer experience on their attraction to…

Abstract

Purpose

Based on the multiple domain perspective and self-identity theory, this study aims to investigate the effect of job applicants' volunteer experience on their attraction to organizations that engage in corporate social responsibility (CSR). Moreover, it examines the mediating effect of the CSR work role definition in this relationship and proposes a moderated mediation model of how the effect of volunteer experience on organizational attractiveness through the CSR work role definition differs according to other- and self-oriented motives.

Design/methodology/approach

Hypotheses were tested with a moderated mediation model using a scenario-based questionnaire with a sample of 146 undergraduate students in South Korea.

Findings

Job applicants' volunteer experience was positively related to attraction to socially responsible organizations, and the CSR work role definition mediated this relationship. The conditional indirect effect of job applicants' volunteer experience on their attraction to socially responsible organizations through the CSR work role definition was significant only for job applicants with lower other- and self-oriented motives.

Practical implications

The study findings suggest that organizations performing CSR should examine whether job applicants have experience with volunteering activities and the motives behind their participation in such activities.

Originality/value

This study contributes to a comprehensive understanding of how job applicants are attracted to organizations that perform CSR and when such attraction is significant by considering their perception of the CSR work role definition and motives for volunteering activities.

Details

Baltic Journal of Management, vol. 15 no. 5
Type: Research Article
ISSN: 1746-5265

Keywords

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