• 한국지역사회생활과학회지
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• 제17권1호
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• pp.101-108
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• 2006

This study was conducted to develop the regulating methods for the optimal harvest stage of new sprout for woody plants, and to clarify the effects of storage condition and period on the growth of new sprout formed of Aralia elata cv. 'Jeongkwang'. Japanese angelica tree were collected in the Jangheung district of Jeonnam on 20. March, 2005, and those cut branches were stored at $5{\pm}2^{\circ}C$ and 80 to 90% of the relative humidity, and were cut in water. Survival rate of cut branches for Aralia elata cv. 'Jeongkwang' was significantly increased when that was used for the cutting after the collection with no storage. And those survival rate was much more increased when that was stored at 80 to 90% of relative humidity than 40 to 50% of relative humidity. Number of new sprouts formed which were not stored immediately after the collection 3.2 to 3.4, and that were stored at cold storage room before cutting and cut on 1. June and 1. August were 5.1 to 5.3. Leaf growth of cut branches cut in water on 20. March started at ten days after cutting, and that on 1. June and 1. August at one to two days after cutting. Slow and mature sprout growth of Aralia elata cv. 'Jeongkwang' which were cut in water were different by the cold storage periods. Nineteen days were needed for the mature growth of sprout when cut in water on 20. March, and thirteen days on 1. August.

• 한국응용약물학회:학술대회논문집
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• 한국응용약물학회 1998년도 Proceedings of UNESCO-internetwork Cooperative Regional Seminar and Workshop on Bioassay Guided Isolation of Bioactive Substances from Natural Products and Microbial Products
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• pp.89-94
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• 1998

Marine sponges are recognized as a plentiful source of diverse biologically active secondary metabolites. Recently, we have initiated a research to discover antitumor constituents from the marine sponges collected from Korean Waters. Marine sponges collected from the South Sea of Korea were screened for several biological activities including such as brine shrimp lethality and cytotoxicity. Significant brine shrimp lethality was detected in the crude extract of a two-sponge association of Poecillastra sp. and Jaspis sp. A cross-section of this sample showed two layers of morphologically distinct sponges. The thin and dirty yellow outer layer was identified as Poecillastra sp. (Pachastrellidae), the surface of which was very rough. The light-grey inner layer was identified as Jaspis sp. (Jaspidae), the surface of which was smooth. This two-sponge association appears to be consistent as these sponges were always found in associated form regardless of collection site or collection period. Investigation of the bioactive constituents monitored by brine shrimp lethality assay led to the isolation of pectenotoxin II (PTX2) and psammaplin A as causative compounds for the brine shrimp lethality. $^1$H- and $\^$13/C-nmr signals of PTX2 was fully assigned utilizing TOCSY, HETCOR, Long-range HETCOR, and Homonuclear J-resolved 2D experiments. PTX2 displayed very potent and selective cytotoxicities in the 60 cell line panel antitumor assay at the NCI. PTX2 has progressed to acute toxicity determination and in vivo antitumor assay at the NCI (Table 1). However, significant in vitro antitumor activity of PTX2 can not be affirmed in the in vivo assay.

• 문화기술의 융합
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• 제6권2호
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• pp.357-367
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• 2020

본 연구는 간호대학생의 수술실 실습경험을 이해하고 설명하기 위해 수행된 질적 연구이다. 본 연구의 참여자는 경상북도 C군 일개 대학에 수술실 임상실습에 참여한 간호 대학생 3, 4학년 67명을 대상으로 하였다. 자료수집기간은 2019년 1월14일부터 2020년 1월 13일까지였으며, 자료 수집은 개방형 자기보고서식 성찰일지를 통해 이루어졌으며, 수집된 자료는 Krippendorff [21]의 내용분석 방법을 사용하여 분석하였다. 간호대학생의 수술실 실습 경험을 분석한 결과, 27개의 하위주제, 12개의 주제, 그리고 5개의 범주로 도출되었다. 5개의 범주는 '복잡한 심경에 휩싸임', '펼쳐진 인체와 직면함', '수술실의 특성을 터득함', ' 임상실습의 한계와 맞닦드림' '자기성찰''이다. 본 연구 결과는 간호대학생의 수술실 실습 경험에 대한 이해를 제공하였으며, 간호대학생의 임상실습의 질을 향상시킬 수 있는 기초 자료로 활용될 것이라고 기대한다.

• 한국직업건강간호학회지
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• 제15권2호
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• pp.83-93
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• 2006

Purpose: This study purposed on investigating how the emotional labor affects the physical uncomfortable feeling of the workers in the department store. Method: The method of data collection was used of questionnaire for 574 workers of one department store located in Seoul. The period of data collection was done from November 1, 2004 to November 30 for about one month. The working career of the participants was over one month at that department. Result: The degree of emotional labor for participants, men were $3.21{\pm}0.53$ for the total point of 5.0 point, and the degree of the physical uncomfortable feeling was $3.07{\pm}0.48$ for total of 5.0 point. The degree of emotional labor for participants, women were $3.22{\pm}0.42$ for the total point of 5.0 point, and the degree of the physical uncomfortable feeling was $3.13{\pm}0.42$ for total of 5.0 point. In order to analyze the factors that affected the emotional labor and physical uncomfortable feeling, the multi-level reflecting analysis was used. As a result, men were insecurity of job influenced the emotional labor feeling in remarkable degree, women were the responsibility of job influenced the emotional labor. Men were insecurity and responsibility of job influenced physical uncomfortable feeling in remarkable degree, women were responsibility of job and emotional labor influenced the physical uncomfortable feeling in remarkable degree. Conclusion: The results of this study show that various strategies to remove the factors of job insecurity in order to reduce the level of emotional labor of the workers at the department store should be devised. In addition, the special way to minimize the physical insecurity should be contrived and carried out. Since the workers of the department stores had higher emotional labor, the factors of stress need to be analyzed and should be removed.

• 정보처리학회논문지D
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• 제8D권5호
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• pp.631-636
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• 2001

전자상거래 관련기술은 짧은 기간에 급속한 발전을 이루었으며, 최근에는 그 영역이 B2B로 까지 확장되고 있다. 이와 같은 전자상거래의 발전에 발맞추어서 수많은 사이트들이 상품들에 비교.분석 정보도 요구되고 있다. 현재 국내에도 쇼핑몰간의 가격비교 정보가 제공되고 있으나 그 갱신주기가 길어 효율적이지 못하며 보다 빠른 갱신을 위한 무절제한 정보 수집으로 인해 대상 쇼핑몰에 많은 부하를 발생시키고 있다. 본 논문에서는 대상 쇼핑몰의 상태에 다라 로봇의 동작이 동적으로 변경되는 동적 로봇에이전트를 이용하여 대상 쇼핑몰의 상품정보에 대해 대상 서버의 부하를 최소로 줄이면서 최단 시간 내에 수집. 분석하여 고객에게 동일 상품에 대한 최저가의 쇼핑몰을 제시하여 맞춤서비스를 제공할수 있는 주문형 검색엔진을 설계 및 구현하였다.

• 한국환경보건학회지
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• 제45권2호
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• pp.126-133
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• 2019

Objectives: In this study, a nine-stage cascade impactor was used to collect dust, and the concentration of $PM_{2.1}$ & $PM_{10}$ and alveolar deposition ratio were investigated. Methods: This study was conducted at Kunsan National University from May to June 2016. A nine-stage Cascade Impactor was used to analyze the concentrations of fine and ultrafine dust and to estimate the alveolar deposition rate by particle size of atmospheric dust particles. The pore size of each stage of the collector used in this study gradually increased from F to 0, with the F-stage as the last stage. Results: The mass fraction of PM showed a bimodal distribution divided into $PM_{2.1}$ & $PM_{10}$ based on $2.1-3.1{\mu}m$. The average mass fraction of particulate matter in the range of $2.1-3.1{\mu}m$ was 44%, and the area occupied by $PM_{2.1}$ was similar. Therefore, the Gunsan area is considered to be a region where there are similar effects from anthropogenic and natural sources. Conclusion: Dust collecting efficiency increased with the stage of collecting fine dust, and the efficiency of collection was very low at the stage of collecting ultra-fine dust. The seasonal overall efficiency of the Cascade Impactor was 44% in spring and 37.4% in summer, and the average overall efficiency was 40.7%. The alveolar deposition rate of $PM_{2.1}/PM_{10}$ during the sampling period was estimated to be about 75% deposited in the alveoli.

• 대한조선학회논문집
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• 제55권6호
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• pp.505-513
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• 2018

Main engine failures in ship operations can lead to a major damage in terms of the vessel itself and the financial cost. In this respect, monitoring of a vessel's main engine condition is crucial in ensuring the vessel's performance and reducing the maintenance cost. The collection of a huge amount of vessel operational data in the maritime industry has never been easier with the advent of advanced data collection technologies. Real-time monitoring of the condition of a vessel's main engine has a potential to create significant value in maritime industry. This study presents a case study on the establishment of upper control limit to detect vessel's main engine failures using multivariate control chart. The case study uses sample data of an ocean-going vessel operated by a major marine services company in Korea, collected in the period of 2016.05-2016.07. This study first reviews various main engine-related variables that are considered to affect the condition of the main engine, and then attempts to detect abnormalities and their patterns via multivariate control charts. This study is expected to help to enhance the vessel's availability and provide a basis for a condition-based maintenance that can support proactive management of vessel's main engine in the future.

• 천문학회보
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• 제43권2호
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• pp.49.3-50
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• 2018

Korea has kept its records of astronomical phenomena since around 2,000 years ago. However, the contents and scope of relevant service have been limited for researchers who need those records due to lack of complete data collection. In this regard, it is necessary to establish efficient collection and management systems of Korean astronomical records by utilizing an environment that is easily accessible. This study is intended to complete the development of a testbed system that allows researchers to systematically input and validate, in a Web environment, multiple astronomical records among the historical documents until Modern Joseon after the Three Kingdoms Period. Recognition of the pre-translated data and tables in advance is followed by its storage in the database built on the Web. Then, data validation is implemented by providing a retrieval service according to a specific form to only a finite number of researchers who have access authority. This study is targeted at a testbed system that takes around three months to be completely developed. The completed testbed system is expected to allow internal and external researchers of an organization to easily access the service on the Web. This will ensure that the accuracy of the data can be verified mutually and help identify areas of service improvement. The opinions collected regarding service improvement will be reflected in the future system. Eventually, domestic astronomical records will subsequently be able to be utilized internationally through the multilingual service.

• 지역사회간호학회지
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• 제31권4호
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• pp.427-435
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• 2020

Purpose: The purpose of this study was to assess the knowledge and health beliefs about gestational diabetes and to identify the influence on breastfeeding intention of women those who have been diagnosed with gestational diabetes. Methods: A cross-sectional descriptive study was designed. A questionnaire survey was conducted on 270 women who were pregnant and currently diagnosed with gestational diabetes. Data collection was conducted at Internet cafes and breastfeeding clinics where pregnant women were able to participate actively. The data collection period was from November 5 to November 27, 2019 and analyzed using descriptive statistics, independent t-test, χ2 test and multiple logistic regression. Results: The average age of the participants was 34.21±3.73 years. There were 221 women who had breastfeeding intention, and 49 women who did not intend to breastfeed. The higher the perceived susceptibility (OR=2.49, p=.032), benefits (OR=2.62 p=.009), and the self-efficacy, the higher the intention to perform breastfeeding (OR=2.97, p=.004). On the other hand, the higher the perceived severity, the lower the intention to perform breastfeeding (OR=0.35, p=.007). Conclusion: Health beliefs such as perceived susceptibility, perceived benefits, self-efficacy and perceived severity have been shown to affect the breastfeeding intention. Based on these results, we suggest developing a breastfeeding promotion intervention program that improves self-efficacy in gestational diabetics.

• 복식문화연구
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• 제31권1호
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• pp.53-69
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• 2023

This study aims to analyze research trends regarding outdoor wear. For this purpose, the data-collection period was limited to January 2002-October 2022, and the collection consisted of titles of papers, academic names, abstracts, and publication years from the Research Information Sharing Service (RISS). Frequency analysis was conducted on 227 papers in total to check academic journals and annual trends, and LDA topic-modeling analysis was conducted using 20,964 tokens. Data pre-processing was performed prior to topic-modeling analysis; after that, topic-modeling analysis, core topic derivation, and visualization were performed using a Python algorithm. A total of eight topics were obtained from the comprehensive analysis: experiential marketing and lifestyle, property and evaluation of outdoor wear, design and patterns of outdoor wear, outdoor-wear purchase behavior, color, designs and materials of outdoor wear, promotional strategies for outdoor wear, purchase intention and satisfaction depending on the brand image of outdoor wear, differences in outdoor wear preferences by consumer group. The results of topic-modeling analysis revealed that the topic, which includes a study on the design and material of outdoor wear and the pattern of jackets related to the overall shape, was the highest at 30.9% of the total topics. The next highest topic was also the design and color of outdoor wear, indicating that design-related research was the main research topic in outdoor wear research. It is hoped that analyzing outdoor wear research will help comprehend the research conducted thus far and reveal future directions.