• International Journal of Highway Engineering
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• v.10 no.2
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• pp.115-124
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• 2008

This Study was investigated in main breakage types of 50 interlocking block pavements in apartment houses and evaluated on their performance. According to performance evaluation, maintenance control index of 9 aged interlocking block pavements ranged 7.9 to 8.9. These values meant that the condition of interlocking block pavements were still good. Therefore, it was concluded that the 10-year cycle of the block replacement recommended by Ministry of Construction & Transportation is necessary to reappraise. To objectively evaluate the performance of interlocking block pavements, this study presented the criteria of maintenance control by combining two maintenance control standards suggested by Ministry of Construction & Transportation and the Japan Interlocking Block Pavement Engineering Association. Also, this study suggested that the domestic standard is necessary to include durability standards and quality standards of joint filling materials and bedding sand layer for increasing expectation life and reducing maintenance costs of interlocking block pavements.

• Fashion & Textile Research Journal
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• v.12 no.3
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• pp.291-301
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• 2010

Today Korean clothing companies are experiencing difficulties in the global market due to unfavorable business conditions including poor production environments, labor shortage, rising costs, the further opening of the domestic distribution market, and increased competition among them. As a result, this has caused many of Korean clothing companies to transfer their production bases abroad in search of relatively inexpensive labor force, instead of using domestic plants. This study attempted to examine how Korean clothing companies perceive production environments and labor standards with regard to their offshore outsourcing. In such an attempt, in-depth interviews were conducted with 24 brand-name clothing firms. Those interviewed firms were the brands for the domestic or foreign market that were found to produce more than 200,000 pieces of clothing per year, and also the group of interviewees included some promotion service providers. The key findings from this study are as follows: First, a large number of the interviewed clothing companies were found to manage their foreign contract manufacturers by "visiting their factories regularly on a seasonal basis" or "stationing their personnel in factory for management purposes." Second, in relation to quality control in their foreign manufacturers, the most frequent response was to "have personnel stationed in those manufacturers." A smaller number of the clothing companies answered that they had "engaged their production management teams in quality control from time to time," or "used their inspectors to inspect products." Third, when asked about labor standards in foreign contract manufacturers, the largest number of the clothing companies responded, "we apply our own standards." The results of this study suggest that most of domestic clothing companies still use offshore sourcing just as a means of reducing their initial labor costs. However, in the continuously changing environment of the global clothing industry, clothing businesses are required to escape from the early phases of their manufacturing environments and set up more globalized standards.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.29 no.4
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• pp.58-64
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• 2006

In this age of infinite competition, quality control plays a huge part in deciding whether companies survive or not. In order to successfully solve the fundamental questions of quality in corporate management under the given circumstances, I suggest that the followings are vital: 1) continuous training of employees and competence development; 2) advocating employees' voluntary involvements and their will to work; 3) revitalizing quality circle activities. Activities of quality circles, which are organized to work out fundamental problems within the corporation, are important in renovating the existing administration. Thus, the purpose of this study is to understand the degree of influence quality circle activities have on the management outcome of the corporation by analyses of actual proofs, and to raise the importance of these activities. Moreover, it purports to provide the foundation for domestic companies to move toward becoming competitive advantage organizations by endowing them with the motivation to activate quality circles.

• Fashion & Textile Research Journal
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• v.25 no.3
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• pp.398-408
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• 2023

Smart clothing products can experience a decrease in performance and reliability due to various mechanical, biological, and chemical stress factors that occur throughout their life cycle. These issues can hinder consumer acceptance of the products. This study aims to enhance the reliability of smart clothing and facilitate quality control by analyzing and identifying the current status of international standardization for smart clothing and electronic textiles (e-textiles). The focus of this analysis was on the durability test methods in the use environment. Furthermore, similar standards published by different standardization organizations for durability tests were compared in depth. The study showed that a total of 27 international standards have been developed or are currently under development. The current standardization efforts mainly aim to develop functionality and durability test methods for smart clothing and e-textile products. A detailed comparison was made between two international standards (IEC 63023-204-1:2023 and AATCC TM210:2019) specifically in relation to the washing durability test method and the electrical resistance measurement standards (BS EN 16812:2016 vs AATCC EP13-2021), before and after the environmental exposure tests. Based on this comparison, several suggestions have been made and discussed for the future revision of these international standards.

• Korean Journal of Oriental Medicine
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• v.4 no.1 s.4
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• pp.115-127
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• 1998

To improve the quality control of frequently used oriental medicinal plants, the storage, cutting, processing and decokting methods of Rehmannia glutinosa Libosch. var. purpurea Makino(熟地黃) were examined. The contents of 5-hydroxymethyl-2- furaldehyde(5-HMF) of Rehmannia glutinosa Libosch. var. purpurea Makino were analysed by HPLC at various conditions as the standard component. Raw materials were classified into 3 groups with their specific gravity(天 地 人黃) and determined the ding weights and the contents of water, the solid component of Ji-Hwang(地黃) was the most. Rehmannia glutinosa Libosch. var purpurea Makino was steamed and dried nine times and analysed the content of 5-HMF on every time. In the case of Ji-Hwang, the standard component of the ninth sample was produced the most. But which of the tenth samples of Chun-Hwang and Yin-Hwang(天黃 人黃) were the most. The best decokting conditions which were determined by the yield of 5-HMF were as follows : non cutting, soaking time was 0 minutes, decokting time was 75 minutes after boiling. The contents of sugar on each of samples were determined. The contents of standard component increased by steaming number and the contents of sugar decreased.

• Environmental and Resource Economics Review
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• v.1 no.1
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• pp.115-149
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• 1991

In evaluating current environmental protection policy, economists often note that current regulations are more costly than necessary to meet environmental quality standards. While the a priori case can be made that current regulatory approaches entail higher-than-necessary costs to attain environmental standards, there is relatively little empirical evidence to support this claim in Korea. The purpose of this analysis is to supply some of the missing evidence by presenting the results of one study that assesses some of the potential savings associated with implementing economic, rather than command-and-control regulatory approaches to abate one type of air pollution in one region, in Korea, Specifically, the analysis examine the costs of meeting a long-term standard for TSP under the alternative control strategies for stationary sources of TSP in Ulsan Industrial Complex region. The alternative strategies that are considered are current command-and-control and various marketable permit designs. The analysis shows that the most efficient policy of emissions control is economic approaches, supporting results of previous empirical studies conducted in other countries.

• Journal of Korean Society for Quality Management
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• v.31 no.3
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• pp.136-159
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• 2003

The purpose of this paper is to propose the effective guidance of Quality Circle(QC) activities. Since 1975, variety of organizations in Korea have widely implemented QC activities for their management systems. The industries have enthusiastically used QC activities and were influenced from them. However, the academics were less interested in this subject, as a result, there were no systematic guidances for QC activities. Thus, in this paper, the effective guidance for QC activities were suggested which were based on the survey from QC proceedings presented in the companies, in the local areas and the national wide contests. As a result, the first main issue is to pick repeated mistakes up during the process period such as unmatched the causes and effects relations in characteristics diagrams, improper selection of important control items in Pareto diagram and so on. Secondly, how to overcome statistics and use them for QC activities. Thirdly, to remind team members about Quality Control 7 tools. Finally, Minitab(Release-13) software has been found that it is not matched with using Korean Standards(KS).

• Proceedings of the Korean Institute of Building Construction Conference
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• 2012.05a
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• pp.35-36
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• 2012

BIM technology accomplished quantitative development being utilized in various disciplines. However, it is necessary to develop environment and requirement for qualitative improvement of BIM-based project in current transitional period of adopting BIM. The purpose of this study is to develop and apply of quality control requirement for improving the quality of BIM-based architectural design through case study. In particular, by focusing on BIM quality control and its relevant subjects, the minimum standards for BIM quality management are suggested. Also, BIM template is suggested to support the effective application of BIM-based architectural design.

• Proceedings of the Korean Geotechical Society Conference
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• 2010.03a
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• pp.1234-1242
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• 2010

In this study, the effect of noise and vibration, and influence of ground improvement are evaluated and its application is analyzed through the example of SCP designed at ground improvement in Song-Do international city. consequently, it showes even comfortable result that it is about 5.0m of inner space, when the LVSCP method is applied, rather than that it is about 30m of inner space when the existing SCP is applied in vibration control standards 2.0mm/sec. In the noise, now that the many differences according to environmental factors like other equipment noise, limited space and so on at the time of the construction by LVSCP method are coming out, so we think that appro itate measures are needed according to surroundings. By the way, when it comes to the estimation of the ground improvement work before and after an improvement of LVSCP method, its result shows that it is satisfacttion to all the standards of compaction control in dregded and reclaimed ground and sedimentary clay layer.

• Journal of Environmental Science International
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• v.22 no.4
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• pp.471-479
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• 2013

The present study was conducted to judge the applicability of field quality control by children's goods manufacturers by assessing the contents of heavy metals such as Pb and Cd in outdoor play goods for children through measurement using Portable XRF and comparing the results through detailed analyses using ICP. Heavy metal contents of 711 part samples of 505 products were measured using XRF. According to the results, the ratio of products that exceeded the Pb and Cd content standards specified under the Quality Management and Safety Control of Industrial Products Act were 2.4% and 2.6%. Many products certified for self-regulated safety exceeded the standards and thus it was considered that harmful chemical material centered safety management systems would be necessary. Detailed ICP analyses of some products were compared and the results showed deviations of 0.9~80.8% from XRF results. The reasons for this are deviations in the characteristics of measured cross sections and the homogeneity of samples resulting from sample preparation methods, etc. Therefore, it is considered that field quality control will be applicable if measuring methods are efficiently established based on product characteristics and calibration curve preparation methods are established through quality control.