네이티브 클라우드 정보시스템 구현방법

이원찬,전유부,한성수,Lee, Won-Chan,Jeon, Yu-Bu,Han, Seong-Su 한국정보처리학회 2022 정보처리학회지 Vol.29 No.1

생태지표를 이용한 거제한산만 굴양식장의 생태학적 수용능력 산정

이원찬,조윤식,홍석진,김형철,김정배,이석모,Lee, Won-Chan,Cho, Yoon-Sik,Hong, Sok-Jin,Kim, Hyung-Chul,Kim, Jeong-Bae,Lee, Suk-Mo 해양환경안전학회 2011 해양환경안전학회지 Vol.17 No.4

The importance of aquafarming is increasing all over the world, however the coastal environment in the semi-closed inner bay has been aggravated due to the long term production and the high stocking density. For the sustainable aquafarming, there is a requirement for a eco-friendly fishery management by the estimation of ecological carrying capacity. The model development and application is still in the initial step, because it has to consider the whole ecosystem and all culture activities. As an alternative, there is a requirement for ecological indicator to assess the ecological performance. This study tried the estimation of ecological carrying capacity using ecological indicator. The production and the facility of the oyster farms was 4,935M/T, $49ind./m^3$ in Geoje-Hansan Bay(2008). Filtration pressure indicator was 0.203 which could provide a guidance on the present level of culture development. According to the environmental characteristics and the present oyster farms in Geoje-Hansan Bay, the newly assessed filtration pressure for the acceptable ecological carrying capacity was 0.102. Consequently, ecological carrying capacity in Geoje-Hansan Bay was 2,480M/T, $25ind./m^3$ and this represents the level of culture that can be introduced into Geoje-Hansan Bay without leading to significant changes to ecological process, species, populations or communities. Our study utilized the ecological indicator to estimate ecological carrying capacity of oyster farming for sustainable productivity and this could be the scientific basis for the eco-friendly fishery management.

여자만의 수질 관리를 위한 허용부하량 추정

이원찬(Won Chan Lee),김형철(Hyung Chul Kim),홍석진(Sok Jin Hong),김정배(Jeong Bae Kim) 한국해양환경·에너지학회 2010 한국해양환경공학회 학술대회논문집 Vol.2010 No.6

학교폭력 해소를 위한 체육수업의 역할

이원찬(Won-Chan Lee),구건모(Geon-Mo Ku),황성하(Sung-Ha Hwang) 한국콘텐츠학회 2014 한국콘텐츠학회논문지 Vol.14 No.12

본 연구의 목적은 학교폭력 해소를 위한 체육수업의 역할을 중학생의 인식을 중심으로 이해하는데 있다. 이를 위해 단순무작위표집법을 활용하여 D광역시에 위치한 중학생 590명을 개방형 질문 대상으로 선정하고 자료를 수집하였으며, 수집된 자료는 귀납적 범주분석을 통해 분석되었다. 그 결과, 중학생들은 체육수업이 학교폭력을 감소시키는 데 긍정적인 역할을 한다는 인식과 아무런 효과가 없다는 부정적인 인식의 형태로 분석되었다. 우선, 긍정적인 역할을 한다는 인식은 총 8개의 중범주와 4개의 대범주로 분석되었는데, 그것은 ‘사회적 요인’, ‘심리적 요인’, ‘신체적 요인’, 그리고 ‘환경적 요인’이었다. 다음으로 체육수업이 학교폭력을 감소시키는데 관련이 없다는 인식은 총 7개의 중범주와 4개의 대범주로 분석되었는데, 그것은 ‘경험적 요인,’ ‘구조적 요인’, ‘인지적 요인’, 그리고 환경적 요인이었다. The purpose of this study is to analyze the role of physical education to solve school violence. In order to do this, we took a sample size of 590 middle school students from city D by using the simple random sampling, allowed them to answer open questions recognizing the relationship between physical education and school violence, and then conducted an inductive category analysis of the data. As a result, it was found that there are both positive and negative reponses towards physical education and school violence. First, the positive responses were classified into 8 subcategories and 4 major categories(the social factors, psychological factors, physical factors, and environmental factors). On the contrary, the negative responses were classified into 6 subcategories and 4 major categories(personal experience, structural elements, cognitive factors, and environmental factors).

노조의 쌍대몰입이 조직성과에 미치는 영향

이원찬(Lim, Won-Chan),이진춘(Lee, Jin-Choon) 한국의사결정학회 2017 의사결정학연구 Vol.25 No.1

본 연구의 목적은 조직환경에서 쌍대몰입이 조직성과에 미치는 영향을 분석하는데 있다. 여기에는 많은 변인들이 관련되어 있는데, 본 연구에서는, 심리적 엠파워먼트, 쌍대몰입, 노사관계 분위기, 조직시민행동, 조직몰입, 노조몰입의 6개 매개변인과, 참여적 의사결정, 신뢰관리, 고용안정성 등의 선행변인과 이직의도와 직무성과의 결과변인으로 모형을 구성하였다. 실증분석 결과, 본 연구의 제안모형은 실제 데이터와 적합한 것으로 나타났고, 참의 의사결정은 심리적 엠파워먼트에 유의한 관계가 있었고, 노사관계 분위기, 고용안정성은 쌍대몰입에 유의한 관계가 있었고, 참여적 의사결정은 쌍대몰입에 유의한 관계가 없었다. 심리적 엠파워먼트와 노사관계 분위는 유의하게 쌍대몰입에 상관이 있었으며, 심리적 엠파워먼트, 쌍대몰입, 조직몰입 및 노조몰입은 각각 쌍대몰입의 영향을 받고 있었다. 또한 조직몰입과 노조몰입은 이직의도에 부정적 영향을 주고 있었으며, 조직시민행동과 노조몰입은 이직의도와 직무성과에 유의한 영향이 없었다. The purpose of this study is to understand critical roles of dual commitment and organizational performance in work environments. There may exist a variety of causes and outcomes relevant to these variables. This study examines the relationships of the six mediate variables, such as, psychological-empowerment, dual commitment, labor-management relationship climate, organizational citizenship behavior, organizational commitment, union commitment. with three antecedent variables, such as, participative decision-making, trust management, job security and two consequence variables, such as, turnover intention, job performance. The empirical results showed a reasonable fit of proposed model to actual data. It was exhibited that participative decision-making is significantly related to psychological-empowerment, trust management is also significantly related to psychological-empowerment, dual commitment, labor-management relationship climate, job security is significantly related to dual commitment, labor-management relationship climate. while participative decision-making is not related to dual commitment. Psychological-empowerment and labor-management relationship climate is significantly related to dual commitment, respectively. psychological-empowerment, dual commitment, labor -management relationship climate is significantly related to organizational-citizenship behavior, organizational commitment, union commitment, respectively. Also it was found that organizational commitment and union commitment take significantly negative effect on turnover intention. while organizational citizenship behavior and union commitment had a not significant, influence on turnover intention and job performance, respectively.

실시간 감정분석과 단어분석을 활용한 말하기 습관 개선 방법의 설계

이원찬(Won-Chan Lee),고대권(Dae-Gweon Ko),김하륜(Ha-Ryun Kim),양철주(Chul-Ju Yang),윤대균(Dae-Kyun Yoon) 한국정보과학회 2018 한국정보과학회 학술발표논문집 Vol.2018 No.6

여자만의 수질관리를 위한 허용유입부하량 산정

김형철,이원찬,김종구,홍석진,김경미,조윤식,박성은,김진호,Kim, Hyung-Chul,Lee, Won-Chan,Kim, Jong-Gu,Hong, Sok-Jin,Kim, Kyoung-Mi,Cho, Yoon-Sik,Park, Sung-Eun,Kim, Jin-Ho 해양환경안전학회 2011 해양환경안전학회지 Vol.17 No.4

Based on the consideration of land based pollutant discharges from the basin and seawater quality related carrying capacity and the seawater quality improvement in receiving water bodies of Yeoja Bay where eutrophication and organic pollution are in progress, were evaluated. The permissible inflow loads of BOD, TN and TP by using the geographical features and box modelling method were estimated. As results, it is shown that the reduction rate of discharged BOD and TP loads were 39.3% and 30.8 %, respectively, however, 6.9% was estimated for TN. According to the pollutant loading in each tributary and generated load of the basin, it is given much weight on the land use group, and also was shown in discharged load estimation. This suggests that it is important to control nonpoint source pollutant such as livestock and land use groups as well as point source to contribute the proposition of the water quality improvement plan according to the characteristics of the bay.

마산만의 자생 유기물 저감을 위한 단순 박스모델의 적용

홍석진,이원찬,윤상필,박성은,조윤식,권정노,김동명,Hong, Sok-Jin,Lee, Won-Chan,Yoon, Sang-Pil,Park, Sung-Eun,Cho, Yoon-Sik,Kwon, Jung-No,Kim, Dong-Myung 해양환경안전학회 2007 해양환경안전학회지 Vol.13 No.2

Simple box budgets models are useful tools to understand the phenomena of natural system and to provide an insight into the complex processes including physical, chemical and biological processes occurring in natural system. Budgets of fresh water, salt and nutrients were estimated in order to clarify the characteristics of seasonal material cycle in the Masan Bay. Outflow volume of freshwater into system was approximately $307.4\times10^3\sim1,210\times10^3\;m^3/day$. Inflow masses of DIP and DIN were approximately $410.8\sim795.7\;kg/day$ and $4081.4\sim6525.3\;kg/day$, respectively. DIN is expected to accumulate in the system. The removal of nutrients from bottom sediments will contribute to the reduction of 21.0% of COD concentration in the system.

2003년 하계 진해만 수질 개선을 위한 생태계 모델링

홍석진,이원찬,정래홍,오현택,장주형,구준호,김동명,Hong, Sok-Jin,Lee, Won-Chan,Jung, Rea-Hong,Oh, Hyun-Tek,Jang, Ju-Hyung,Goo, Jun-Ho,Kim, Dong-Myung 해양환경안전학회 2007 해양환경안전학회지 Vol.13 No.2

This study estirmted the appropriate pollutant load reduction from point sources in Jinhae Bay, Korea, using an eco system model. The results of COD values in the inner part of the bay obtained through the simulation by ecosystem model were greater than 3.0mg/L, and exceeded the limits of Korean Coastal Water Quality Grade III. Engineering countermeasures to reduce the $70\sim90%$ of all land based pollution load or organic and inorganic material loads from point sources by more than 50% were required to keep the COD levels below 2 mg/L. The reduction loads is 5,632kg/day of COD, 481kg/day of DIP and 7,991 kg/day of DIN in case of the reduction of both the organic and nutrients. The estimated environmental currying capacity of that case is 13,112kg/day of COD, 206kg/day of DIP and 3,425kg/day of DIN to keep the COD levels below 2mg/L.

안정동위원소를 이용한 서해연안 실뱀장어의 먹이 습성

김정배,이원찬,김대중,성기백,최희구,최우정,황학빈,홍석진,김형철,박성은,심정희,강창근,Kim, Jeong Bae,Lee, Won-Chan,Kim, Dae-Jung,Seong, Ki Baik,Choi, Hee-Gu,Choi, Woo-Jeung,Hwang, Hak Bin,Hong, Sokjin,Kim, Hyung Chul,Park, Sung-Eun,Shim, 한국해양학회 2013 바다 Vol.18 No.4

Glass eels (Anguilla japonica) are caught in the west coast of Korea on their migratory route from the breeding grounds in the Mariana Trench along the North Equatorial Current and the Kuroshio Current. To identify the food source of natural glass eels, we analyzed the stable C and N isotopes of glass eels caught in April 2012 and investigated possible food sources in the survey area. In particular, with respect to the stable C and N isotopes of particulate organic matter, we extended the surveying area to the northern parts of East China Sea as well as the west coast of Korea. The stable C and N isotope ratios of the glass eels caught in the west coast were found to be $-20.7{\pm}0.1$‰ and $5.0{\pm}0.2$‰, respectively. The stable C and N isotope ratios of the particulate organic matter in the west coast of Korea, in which the glass eels are assumed to eat the particulate organic matter as food source, were estimated to be $-24.0{\pm}0.3$‰ and $2.8{\pm}0.4$‰, respectively. Similar data were obtained from the northern part of the East China Sea, $-24.5{\pm}0.5$‰ and $0.8{\pm}0.3$‰. The stable isotope ratios showed values differing from the stepwise increasing rates up the food web in natural aquatic ecosystem, showing that particulate organic matter in the west coast of Korea and East China Sea was not served as the glass eels food source. This result suggested that the glass eels caught in the west coast might not assimilate nutrition from the marine environment during long migration.