• Journal of Ginseng Research
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• v.37 no.1
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• pp.124-134
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• 2013

The authentication of the physico-chemical properties of ginsenosides reference materials as well as qualitative and quantitative batch analytical data based on validated analytical procedures is a prerequisite for certifying good manufacturing practice (GMP). Ginsenoside Rb1 and Rg1, representing protopanaxadiol and protopanaxatriol ginsenosides, respectively, are accepted as marker substances in quality control standards worldwide. However, the current analytical methods for these two compounds recommended by Korean, Chinese, European, and Japanese pharmacopoeia do not apply to red ginseng preparations, particularly the extract, because of the relatively low content of the two agents in red ginseng compared to white ginseng. In manufacturing fresh ginseng into red ginseng products, ginseng roots are exposed to a high temperature for many hours, and the naturally occurring ginsenoside Rb1 and Rg1 are converted to artifact ginsenosides such as Rg3, Rg5, Rh1, and Rh2 during the heating process. The analysis of ginsenosides in commercially available ginseng products in Korea led us to propose the inclusion of the (20S)- and (20R)-ginsenoside Rg3, including ginsenoside Rb1 and Rg1, as additional reference materials for ginseng preparations. (20S)- and (20R)-ginsenoside Rg3 were isolated by Diaion HP-20 adsorption chromatography, silica gel flash chromatography, recrystallization, and preparative HPLC. HPLC fractions corresponding to those two ginsenosides were recrystallized in appropriate solvents for the analysis of physico-chemical properties. Documentation of those isolated ginsenosides was achieved according to the method proposed by Gaedcke and Steinhoff. The ginsenosides were subjected to analyses of their general characteristics, identification, purity, content quantification, and mass balance tests. The isolated ginsenosides showed 100% purity when determined by the three HPLC systems. Also, the water content was found to be 0.534% for (20S)-Rg3 and 0.920% for (20R)-Rg3, meaning that the net mass balances for (20S)-Rg3 and (20R)-Rg3 were 99.466% and 99.080%, respectively. From these results, we could assess and propose a full spectrum of physico-chemical properties of (20S)- and (20R)-ginsenoside Rg3 as standard reference materials for GMP-based quality control.

• Journal of Korean Academy of Nursing
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• v.28 no.3
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• pp.773-785
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• 1998

This study aims at providing more qualitative care in family nursing practice. It is designed to analyze the degree of quality of life(QL) among families of the patients. The subjects consisted of 79 families of hospital hospice patients and 74 families of home-based hospice patients. The ages of the subjects were 17-74 years, at five university hospitals in Seoul, Inchon, and Kyung Gi Province, and one clinic in Chunchon. The data were collected from September, 1996 to August, 1997. The instrument used for the study was the Quality of Life Scale (QLS), which was composed of six factors, developed by Ro, You Ja. The analysis was done using t-test, ANOVA Scheff test, and Stepwise multiple regression. The results were as follows : 1. There were no statistically significant differences between the families of hospital hospice patients and the families of home-based hospice patients ; however, the mean score of the families of hospital hospice patients was higher than that of the families of home-based hospice patients. The scores on QLS ranged from 75 to 224 with a mean score of 140.58 in the families of hospital hospice patients. In the families of home-based hospice patients, the scores ranged from 79 to 214, showing a mean score of 135.25. Among six factors of QLS, family relationships showed the highest score in both groups, but economic life showed the lowest score in the families of hospital hospice patients, and emotional state showed the lowest score in those of home-based hospital patients. Self-esteem and relationship with the neighborhood were significantly higher in the families of hospital hospice patients than the families of home-based hospice patients (t=2.69, P= 0.008 ; 1=2.04, p=0.043). 2. In the families of hospital hospice patients, QL had significant relationship with family member's age(F=2.52, p =0.029), marital status (F=3.57, P=0.018), economic state(F=6.07, P=0.004), and education level(F=3.77, P=0.014). In the families of home-based hospice patients, QL had significant relationship with marital status (F=2.53, P=0.049), education level(F=4.35, P=0.007), occupation(F=3.93, P=0.002), and patient's age(F=2.73, P=0.020) 3. Economic status accounted for 17% of QL, and diagnosis accounted for an additional 7% of QL in the families of hospital hospice patients by means of stepwise multiple regression analysis. In the families of home-based hospice patients, relationships with patient accounted for 12% of QL. The findings showed that self-esteem and relationship with the neighborhood were significantly higher in the families of hospital hospice patients than the families of homed-based hospice patients and family relationships showed the highest value in QL. These findings should be considered in nursing practice.

• Journal of The Korean Association of Information Education
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• v.20 no.2
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• pp.139-150
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• 2016

The development of Smart devices has become a key influence on the changes of the school system. As Smart education is integrated and institutionalized in school systems, how it is perceived and utilized by teachers should be investigated. This study is conducted to find out the perception of the teachers on characteristics of Smart education, using qualitative research method, and to analyze importance-performance, using additional quantitative analysis. To figure out the perceptions of the attributes of Smart education by teachers, related literatures were reviewed. The 8 teachers were selected and the data on their perceptions of Smart education were collected through direct observation of class and semi-structured in-depth interview. After researching, we finally drew out 16 final concepts, 6 sub-categories, and 3 categories in the open coding process. Based on the 16 concepts on teachers' perceptions on Smart education, importance-performance analysis (IPA) were conducted to identify areas that need focus and improvement. Based on the results of teachers' perceptions on importance of and the levels of use of Smart education, recommendations were provided for better practice of Smart education in school.

• Journal of the Korean Institute of Landscape Architecture
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• v.31 no.5
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• pp.20-30
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• 2003

This study is aimed at establishing the categories and items for ecological assessment and evaluation of the environmental friendliness of golf courses in the capital region of Korea. The categories and items for the assessment have been derived based on the existing literature and interviews with golf experts. This study covers 32 golf courses in the capital region of Korea that are available in terms of data and on-site surveys. In order to conduct a comprehensive assessment of the environmental friendliness of the golf courses, the assessment area was divided into 4 categories that include a total of 14 sub-categories. The 4 categories encompass 1) location, 2) topography, 3) vegetation, and 4) construction. As its sub-categories, the location category includes current land use and zoning in the National Land Use Management Law. Topography has 2 sub-categories in the damage ratio of existing topography, gradient, cut area, and slope height. The assessment of vegetation is largely based on site surveys in the categories of preservation of the existing vegetation, the use of natural resources and existing trees, the component ratio of native tree species, the multi-layered structure of vegetation, and the utilization of water purification plants. In the aspect of construction, afforestation on tile slopes and the utilization of existing surface soil were evaluated. The examination of comparative analysis among the 10 items as a ratio measure showed that the scores were low in the sub-categories of current land we, the use of existing trees, and the multi-layered structure of vegetation. However, the rating results were satisfactory in the 2 sub-categories including cut area, and the utilization of native tree species. Those proved to be contributing factors in the ecological health of the golf courses. According to correlation analysis of the 10 items to the overall ecological rating of each golf course, the sizes of the 32 golf courses were mainly affected by the damage ratio of existing topography, gradient, preservation of vegetation and slope height. This study has the initiative to conduct an ecological assessment of golf courses in the country based on site surveys. The study results revealed that location factors such as current land use, damage ratio of topography and gradient and topographical factors were the main factors affecting the environmental friendliness of golf courses. This indicates indicating the significance of these factors in the future construction practices of golf courses. Furthermore, this study raises the need for follow-up studies to establish more detailed assessment criteria and to develop assessment techniques for areas such as slope afforestation and water purification plants that need a qualitative approach.

• The Journal of Korean Academic Society of Nursing Education
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• v.18 no.2
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• pp.332-344
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• 2012

Purpose: The purpose of this study was to identify the current status of Asian research and suggest a direction for the future development of nursing research in Asian countries Methods: To examine the current status of Asian nursing research, 539 abstracts presented at the 2011 East Asian Forum of Nursing Scholars in Seoul were analyzed according to the structured analysis format. Results: The results showed that most of the studies (77.6%) were quantitative design, but qualitative design was also conducted. Most of quantitative studies were quasi experimental designs and questionnaires are most frequently used for data collection. Only 8.5% of the studies used physiological measures. Key words were categorized into four nursing metaparadigms: clients, environment, health and nursing. The most frequently mentioned domain was health. Main themes of research were elderly, chronic disease, health promotion, and nurse/nursing management. Most frequently used key words were elderly, social support, depression, and stress. Conclusion: Major trends were similar in Asian countries, and mostly conducted with quantitative designs. Research topics were varied and major interests in nursing research topics were elderly, health promotion, and mental health in all countries. We need to develop nursing science based on closer communication and cooperation among Asian countries.

• Asian Pacific Journal of Cancer Prevention
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• v.16 no.17
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• pp.7789-7794
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• 2015

Background: This study aimed to evaluate the impact of a community-based health education and communication programme on reducing liver fluke infections caused by the consumption of uncooked fish among people in a high-risk area of Thailand. Materials and Methods: The study was quasi-experimental in nature, with three-stages. Stage 1 involved a situational and capacity analysis of designated communities in Khon Kaen province. This was followed by the development of a model for community-based health education and communication to prevent liver fluke infections among high-risk people, and, lastly, implementation and evaluation of the model were performed. Data were collected using both qualitative and quantitative methods. In total, 390 people were surveyed, and quasi-experimental and comparison groups, each with 90 people, were assessed between May 2011 and April 2012. Analysis was using statistical OR, 95 % CI, the Willcoxon matched pairs signed ranks test, the chi-square test, and the Mann-Whitney U test. Results: The findings showed that most respondents had a high level of knowledge and understanding of liver fluke disease (89.5%, 95% CI:86.0-92.4), and positive attitudes toward the prevention of the disease (94.4%, 95% CI:91.6-96.4). However, with regard to changes in consumption of uncooked fish, most respondents were still in the pre-contemplation phase (55.1%, 95% CI:50.0-60.1), followed by the contemplation phase, 22.6%. Furthermore, four factors were found to be associated with the consumption of uncooked fish - the consumption of alcohol (OR 4.16, 95% CI:1.79-9.65), gender (OR 3.17, 95% CI:1.53-6.54), smoking (OR 3.03, 95% CI:1.31-7.05), and age 40 years and above (OR 2.68, 95% CI:1.02-7.05). After nine months of the health education and communication programme using local media based on local wisdom, culture and persons, the results showed that, compared to the control group, members of the experimental group had a higher level of knowledge, a better attitude and lower levels of ill-advised consumption behaviour. Also, it was found that consumption of uncooked fish, by an assessment of the level of stage of change, was reduced. (p-value 0.002). Conclusions: The health education and communication programme developed as part of the study was effective in changing the consumption of uncooked fish. Therefore, this approach should be promoted in other high-risk areas in Thailand in the future.

• Journal of Hospice and Palliative Care
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• v.20 no.2
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• pp.100-110
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• 2017

Purpose: We explored Koreans' perception of the meaning of death with dignity that Korean people. Methods: A phenomenological research methodology was applied. A total of 13 participants were sampled based on their age and gender. Participants were interviewed in depth from September 2015 through February 2016. Colaizzi's phenomenological analysis method was used for data analysis. To establish the validity of the study, we evaluated its realistic value, applicability, consistency and neutrality of the qualitative evaluation criteria of Lincoln and Guba. Results: Koreans' perception of death with dignity was structured as 19 themes, nine theme clusters and four categories. The four categories were "comfortable death", "good death", "resolving problems before death", and "death with good reputation". The theme clusters were "death without pain", "death submitting to one's fate", "death that is not ugly", "leaving good memories to others", "dying in a way we want", "death after proper settling of things", "dealing with chronic resentment before death", "death after living a good life", and "death with recognition". Conclusion: For Koreans, death with dignity meant not burdening others, settling things right and leaving good memories to their families and friends. Such perceptions can be applied to hospice care for terminally ill patients.

• Journal of the Korean Institute of Intelligent Systems
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• v.26 no.5
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• pp.416-422
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• 2016

Lots of plastics are widely used in a variety of industrial field. And the amount of plastic waste is massively produced. In the study of waste recycling, it is emerged as an important issue to prevent the waste of potentially useful resource materials as well as to reduce ecological damage. So, the recycling of plastic waste has been currently paid attention to from the view point of reuse. Existing automatic sorting system consist of near infrared ray (NIR) sensors to classify the types of plastics. But the classification of black plastics still remains a challenge. Black plastics which contains carbon black are not almost classified by NIR because of the characteristic of the light absorption of black plastics. This study is focused on handling how to identify black plastics instead of NIR. Raman spectroscopy is used to get qualitative as well as quantitative analysis of black plastics. In order to improve the performance of identification, Support Vector Machine(SVM) classifier and Principal Component Analysis(PCA) are exploited to more preferably classify some kinds of the black plastics, and to analyze the characteristic of each data.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.12
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• pp.493-501
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• 2019

This paper describes nurses' perceptions toward parental participation in pediatric intensive care units (PICU). Qualitative data were collected from five nurses working at two PICUs in Seoul through individual in-depth interviews. The interviews were conducted from January to February 2016 and analyzed using traditional content analysis. Five categories were found for the parent participation in PICU: needs, attributes, benefits, barriers, and facilitating strategies for parent participation in PICU. Nurses acknowledged the necessities and benefits of parent participation, particularly in PICU, considering the parents' emotional burdens due to the critical health condition of their child as well as the limited visiting policy. The major barriers were a lack of knowledge and the skills of nurses to facilitate parent participation, nurses' heavy workloads, and lack of policies and guidelines supporting parent participation within the PICUs and hospitals. The participants indicated that organizational facilitating-strategies, such as education for nurses about meaning and skills of parent participation in PICU, raising awareness for nurses as well as parents, and ensuring professional staff dedicated to promoting parent participation, to be significant factors. Further study will be needed to develop nursing interventions to integrate parent participation in PICU care.

• Korean Journal of Head & Neck Oncology
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• v.34 no.1
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• pp.21-27
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• 2018

Background/Objectives: This study aimed to evaluate the changes of uptake around the sternoclavicular joint (SCJ) according to 18F-FDG PET images in patients with head and neck cancer who underwent neck dissection. Materials & Methods: Retrospectively, the medical records of patients who received selective or comprehensive neck dissection were reviewed. Preoperative and 1-year postoperative 18F-FDG PET images, if available, were analyzed by nuclear medicine physicians in both qualitative and quantitative manners. Correlation between the changes of uptake around SCJ and perioperative data were statistically analyzed. Results: Thirty-seven patients satisfying the inclusion criteria were enrolled. Seven patients with increased uptake around SCJ on 1-year postoperative 18F-FDG PET showed a correlation with radical or comprehensive neck dissection, accessory nerve sacrifice, and high postoperative SUVmax. When 20 patients with increased uptake around SCJ according to quantitative measurement were compared with other patients without increased uptake, no parameter was significantly different, except postoperative SUVmax. Bivariate logistic regression analysis revealed that the clinical symptom (shoulder or sternal pain) was significantly correlated with the extent of neck dissection (OR 0.227, CI 0.053-0.966, p=0.045) and spinal accessory nerve sacrifice (OR 13.500, CI 1.189-153.331, p=0.036). Conclusions: Increased uptake around SCJ on 1-year postoperative 18 F-FDG PET was correlated with either the radical or comprehensive procedure, as well as with accessory nerve sacrifice. This suggests that subjective analysis of 18F-FDG PET can be used to detect subclinical shoulder instability.