• Journal of Korean Society for Quality Management
• /
• v.31 no.1
• /
• pp.90-108
• /
• 2003

This study deals with a case analysis on the implementation of ISO 9000/14000 Integrated Management System. The intention is to provide some general guidelines, in particular, to small-to-medium-sized companies that are planning to introduce the Integrated Management System. First we briefly review each of the ISO 9000 series, ISO 14000 series and Integrated Management System. We then investigate the case of a small-sized company that have built and is successfully operating the Integrated Management System. We start with introducing the company, and then examine the background and the procedure for implementing the Integrated Management System. We investigate effects of the Integrated Management System, which are the main focus of this paper. This study is meaningful in that, to our best knowledge, it is the first field report appearing in the literature in regard to the actual implementation of ISO 9000/14000 Integrated Management System in Korea.

• The Journal of Korean Medicine
• /
• v.36 no.4
• /
• pp.129-144
• /
• 2015

Objectives: This study aimed to provide a basis for treatment of Hwa-byung, a mental disorder frequently found among Koreans, by analysing published case reports and case series. Methods: In June 2015, a literature search for case reports and case series describing interventions for Hwa-byung was conducted in 7 databases for research publications in Korea, using Korean and English terms. Results: Thirty-two papers, reporting 439 cases of Hwa-byung, met the inclusion criteria. Since the first case report on Hwa-byung in 1996, case reports were continuously published until 2012. A total of 22 interventions were described, of which herbal medicine (71.9%), acupuncture (65.6%), and moxibustion (34.4%) were the most frequently described interventions. Twenty-five papers reported patterns, for which liver qi depression (28%) was most frequently used. A total of 48 outcome measures were used in 32 papers, of which Beck Depression Index (46.9%) and Symptom change (43.8%) were used in at least 10 papers. Conclusions: Since only 32 case reports/case series have been published on Hwa-byung in Korea, a strong basis for recommending standardized treatments is lacking. Therefore, a sufficient number of clinical studies, in particular randomized clinical trials (RCTs), are warranted to provide a clinical basis for treatment of Hwa-byung.

• Communications for Statistical Applications and Methods
• /
• v.21 no.3
• /
• pp.253-260
• /
• 2014

The intraclass correlation model has a long history of applications in several fields of research. Case deletion diagnostic methods for the intraclass correlation model are proposed. Based on the likelihood equations, we derive a formula for a case deletion diagnostic method which enables us to investigate the influence of observations on the maximum likelihood estimates of the model parameters. Using the Taylor series expansion we develop an approximation to the likelihood distance. Numerical examples are provided for illustration.

• Proceedings of the Korea Concrete Institute Conference
• /
• 2000.10a
• /
• pp.801-809
• /
• 2000

Until recently as a method of repairing leaking problem, generally urethane series were used for many structures as subway, box culvert etc. However the lacking of sufficient penetration capacity have made it difficult to repair such structures completely. Now, we could achieve enhanced quality of repairing work by using new material which was compounded of urethane series and cement series properly. This material can penetrate concrete structure efficiently and move interactively with the structure in case of the thermal expansion. Besides of this, we could prevent expecting leakage through several improvements on the aspects of design, materials and site implementation.

• Journal of Korean Society of Industrial and Systems Engineering
• /
• v.19 no.38
• /
• pp.17-28
• /
• 1996

ISO 9000 Series International Standard have been established in 1987 and world trading patterns have changed into the request of ISO 9000 series approval. About 1100 domestic companies have currently obtained ISO 9000 series approval from domestic or foreign certification bodies. This paper presents the current status of ISO approval of domestic industries, a case study of a valve manufacturing company in Pusan, procedures for obtaining ISO approval, predictable effects as a result of approval, and recommendations.

• Journal of Preventive Medicine and Public Health
• /
• v.46 no.1
• /
• pp.10-18
• /
• 2013

Objectives: We investigated the association between particulate matter less than $10{\mu}m$ in aerodynamic diameter ($PM_{10}$) exposure and non-accidental mortality in Asian populations by meta-analysis, using both time-series and case-crossover analysis. Methods: Among the 819 published studies searched from PubMed and EMBASE using key words related to $PM_{10}$ exposure and non-accidental mortality in Asian countries, 8 time-series and 4 case-crossover studies were selected for meta-analysis after exclusion by selection criteria. We obtained the relative risk (RR) and 95% confidence intervals (CI) of non-accidental mortality per $10{\mu}g/m^3$ increase of daily $PM_{10}$ from each study. We used Q statistics to test the heterogeneity of the results among the different studies and evaluated for publication bias using Begg funnel plot and Egger test. Results: Testing for heterogeneity showed significance (p<0.001); thus, we applied a random-effects model. RR (95% CI) per $10{\mu}g/m^3$ increase of daily $PM_{10}$ for both the time-series and case-crossover studies combined, time-series studies relative risk only, and case-crossover studies only, were 1.0047 (1.0033 to 1.0062), 1.0057 (1.0029 to 1.0086), and 1.0027 (1.0010 to 1.0043), respectively. The non-significant Egger test suggested that this analysis was not likely to have a publication bias. Conclusions: We found a significant positive association between $PM_{10}$ exposure and non-accidental mortality among Asian populations. Continued investigations are encouraged to contribute to the health impact assessment and public health management of air pollution in Asian countries.

• Journal of the Korean Statistical Society
• /
• v.30 no.3
• /
• pp.387-406
• /
• 2001

Adaptive estimators for a class of nonlinear time series models has been proposed by several authors. Koul and Schick(1997) proposed the adaptive estimators without sample splitting for location-type time series models. They also showed by simulation that the adaptive estimators without sample splitting have smaller mean squared errors than those of the adaptive estimators with sample splitting. the present paper generalized the result in a case of location-scale type nonlinear time series models by simulation.

• Journal of Korean Traditional Oncology
• /
• v.10 no.1
• /
• pp.47-55
• /
• 2005

Objectives: The purpose is to advertise the protocol of Best Case Series Programme of National Cancer Institute of USA to korean oriental medical oncologists and researchers Method: We reviewed the submission packet of NCI and related Website and articles. Result and Conclusion: BCS programme is the first step to evaluate the efficacy of complementary and alternative treatment, and to launch the clinical research funded by NCI.

• The Korean Journal of Applied Statistics
• /
• v.28 no.1
• /
• pp.115-122
• /
• 2015

This article is concerned with count time series taking values in non-negative integers. Along with the first order mean of the count time series, conditional variance (volatility) has recently been paid attention to and therefore various integer-valued GARCH(generalized autoregressive conditional heteroscedasticity) models have been suggested in the last decade. We introduce diverse integer-valued GARCH(INGARCH, for short) processes to count time series and a real data application is illustrated as a case study. In addition, zero inflated INGARCH models are discussed to accommodate zero-inflated count time series.

• Proceedings of the Korean Society of Agricultural Engineers Conference
• /
• 2003.10a
• /
• pp.163-166
• /
• 2003

In this study, a grouping of particle-size distributions(PSDs) by means of the fuzzy c-means clustering method(FCM) was presented. The classification was performed with the whole and the major soil series representing pedological origin. In case of the major soil series, PSDs were clustered as $2{\sim}4$ groups and the characteristics of clustering results were quite different between the soil series. It was found that the characteristics of PSDs at center of each class can be explained by formation process of each soil series. In case of whole soil data, PSDs were classified to 8 classes in which 4 classes were single mode and 4 classes were bimode distributions. Through this study, it is concluded that pedogenetic process is a plausible explanation for grain size distribution of soils.