원격영상자료와 수치고도모형으로부터 하폭-유량 관계식 도출

김종천,백경록,Kim, Jong Chun,Paik, Kyungrock 한국수자원학회 2015 한국수자원학회논문집 Vol.48 No.8

본 논문에서는 원격탐사자료를 이용하여 하천의 하폭-유량 관계식을 도출하는 방법을 제안하였다. 고해상도 원격영상으로부터 하천의 여러 단면에 대해 수면 폭을 측정하였다. 각 단면 지점에 해당하는 유역면적은 수치고도모형으로부터 계산하여하폭-유역면적 관계식을 구하였다. 한편, 지상관측소의 유량자료를 이용하여 측정된 유량과 관측소 별 유역면적 사이의 관계식을 구하고, 이렇게 얻어진 두 개의 관계식을 짝지어 수리기하 관계식 중 하나인 하폭-유량 관계식을 도출하였다. 본 방법의 타당성을 확인하고자 낙동강과 섬진강을 대상으로 하폭-유량 관계식의 지수 값을 살펴보았다. 그 결과, 지상관측자료의 회귀식에서 얻은 하폭과 유량 사이의 관계식과 비교하여, 비슷한 범위의 지수 값이 계산되었다. 본 연구의 접근법은 실측자료에 의존했던 전통적인 수리기하 분석 방법을 탈피하여 현장 자료의 한계를 극복할 수 있는 대안이라고 할 수 있다. We propose a method for deriving the relationship between channel width and discharge from remote sensing products. Stream widths at points distributed along a river network can be measured from high-resolution remote imagery. Further, corresponding drainage area for these points can be calculated using digital elevation models, making it possible to construct width-drainage area relation. On the other hand, the relationship between the flow discharge and the drainage area is obtained from historical data measured at ground stations. By coupling these two relationships, we can finally derive the width-discharge relationship which comprises an important component of downstream hydraulic geometry. The proposed method was tested for the Nakdong River and the Seomjin River, successfully capturing power-law exponents in the width-discharge relationships reported in earlier studies. The proposed approach can serve as an alternative for obtaining the hydraulic geometry relationship under the limits of ground data.

중국 현대 도서 분류법의 주류서열에 관한 연구

김종천(Jong Chun Kim) 상명대학교 사회과학연구소 1999 社會科學硏究 Vol.12 No.-

This study compared three main classfication codes ,「Chung-kuo Ren-min Da-xue Tu-shu-kwan Tu-shu Fen-lei-fa 」,「Chung-kuo Ke-xue-yuan Tu-shu-kwan Tu-shu Fen-lei-fa 」,「Chung-kuo Tu-shu-kwan Fen-lei-fa 」, of China. Main class order of each classification cod

친환경적 교통체계를 위한 bicycle GIS Service

김종천(Jong-chun Kim),강아람(Ah-ram Kang),김성엽(Sung-yeop Kim),김진희(Jin-hee Kim),최현민(Hyun-min Choi) 대한공간정보학회 2008 한국지형공간정보학회 학술대회 Vol.2008 No.6

2005년 리우환경회의 이후 지구환경보전을 위한 노력이 확대되고 이를 위한 친환경 교통이용에 대한 요구가 증대할 뿐만 아니라 고유기 시대를 맞이하여 승용차의 효율성, 편리성에서 시작된 승용차시대의 한계성이 최근 서서히 드러나고 있다. 뿐만 아니리 승용차가 교통문제해결의 수단이 되지 못하며 지구환경에 악영향이 확대됨에 따라 최근 친환경적인 자전거에 대한 관심이 증대되고 있다. 따라서 본 연구는 2010년 까지 만들어질 "자전거 전용 도로망 조기구축계획"에 따라 이용객의 편익을 위해 설치되는 자전거 정거장들의 최적지를 선정하고, 최적지 위치와 각 도로 환경에 대한 정보와 대화형 자전거 GIS 웹 서비스를 만들어 제공하는 것이 본 연구의 목적이다.

「 중국과학원도서관 도서분류법의 (中國科學院圖書館圖書分類法) 」 연구

김종천(Jong Chun Kim) 상명대학교 사회과학연구소 1998 社會科學硏究 Vol.11 No.-

The first edition of "Chung-kuo Ke-xue-yuan Tu-shu-kwan Tu-shu Fen-lei-fa" had been published in 1958. The second edition was published in 1979. This classification is acknowledged as one of the three important classifications in China. The special ch

Chlorinated Polyvinylchloride가 혼합된 Polyvinylchloride사의 물리적 및 열적 특성

김환철,김종천,성백만,Kim Hwan Chul,Kim Jong Chun,Sung Baek Man 한국섬유공학회 2004 한국섬유공학회지 Vol.41 No.6

Thermal and mechanical properties of CPVC(chlorinated PVC) are better than those of PVC. CPVC was blended with PVC to increase properties of PVC fiber. Blending ratio of CPVC was changed and thermal, rheological and mechanical properties were investigated in this study. Thermal stability and melt viscosity increased with increase in CPVC content. Fiber was spun by melt spinning method and drawn using heat plate. Tenacity increased and elongation decreased with increase in CPVC content. Heat shrinkage decreased with increase in CPVC content and heat treating temperature. Onset temperature of DSC endotherm peak corresponded to the treated heat temperature.

사과 台木種子의 貯藏方法 및 藥劑處理가 發芽에 미치는 影響

文鍾烈(Mun Jong Yel),金鍾天(Kim Chong Chun) 한국원예학회 1976 Horticulture, Environment, and Biotechnology Vol.17 No.2

어업조사통계의 품질진단과 개선에 관한 연구

표희동(Hee-Dong PYO),김종천(Jong-Chun KIM) 한국수산해양교육학회 2010 水産海洋敎育硏究 Vol.22 No.4

The paper aims to evaluate the quality of fisheries census statistic and to provide some desirable directions and improvements for the future fisheries census, conducted by the Government. For the quality diagnosis of fisheries census statistic, specific processes of fisheries census and statistical qualities of each dimension are surveyed and evaluated by a Government's practician, two external examiners and a research group. Results show that census design, data analysis and quality control are evaluated relatively low in specific processes, and accessibility and comparability are evaluated relatively lower than relevance, accuracy, timeliness and consistency in statistical qualities. For minimizing the sampling errors, the probability proportion method should be employed in sampling methods from currently simple sampling method. In addition, fisheries census statistic is desirable to include and compare with those of different countries for consumer oriented data system.

이기대 水邊 도시자연공원의 經濟的 價値推定에 관한 硏究

박철형(Park Cheol-Hyung),김종천(Kim Jong-Chun) 부경대학교 인문사회과학연구소 2007 인문사회과학연구 Vol.8 No.2

  본 논문의 목적은 부산 이기대 수변 도시자연공원에 관해서 TCM과 CVM을 사용하여 경제적 가치를 평가하는데 있다. 이 조사는 방문객중 152명의 사용자 설문조사에 기초를 두었다. 그리고 소득, 연간소득, 연령, 직업, 거리, 시간, 여행비용, 보전 지불의사와 같은 사회경제적 변수들이 통합된 21개 지역의 응답자들로부터 분석되었다. 통계 패키지를 이용하여 추정된 회귀방정식의 계산 결과는 양분선택형 CVM을 이용하였을 때의 보전가치가 자본가치로 840억~14,770억원으로, 그 다음이 TCM을 이용하였을 때의 사용가치가 자본가치로 710억~10,660억원, 그리고 지불카드형 CVM을 이용하였을 때의 사용가치가 자본가치로 94억~140억원으로 나타났다. 따라서, 총경제적 가치는 자본 가치로 900억~25,000억원에 달했다.   The purpose of this study is to evaluate economic values of Ikidae Waterfront Urban Park using Travel Cost Method and Contingent Valuation Method.<BR>  This research was mainly based on questionnaire survey of 152 users of visitors. Socio-economic factors such as income, annual income, age, occupation, distance, time, travel cost, conservation-willingness to pay were analysed from integrated 21 residential areas of the respondents.<BR>  The computation results of presumed regression equation using statistic packages(EXCEL, SPSS) showed that the preservation values of Ikidae Waterfront Urban Park using dichotomous choice contingent valuation method was estimated as 840~14,770 hundred million won by capital values, the use values using TCM as 710~10,660 hundred million won by capital values, and the use values using payment card formats as 94~141 hundred million Won by capital values. Accordingly, total economic values were estimated as 900~25,000 hundred million won by capital values.

업종별 수협의 생산성 추정에 관한 연구

권오민(Oh-Min KWON),김종천(Jong-Chun KIM) 한국수산해양교육학회 2020 水産海洋敎育硏究 Vol.32 No.2

The purpose of this study is to estimate and compare the productivity of our countrys industrial fishery cooperatives. Therefore, this study examine the changes in productivity of 20 industrial fishery cooperatives for the last six years from 2013 to 2018, and analyze the factors that influenced these changes in productivity. The results of the study showed us a reduction in overall total factor productivity by 21% between 2013 and 2018. However, while the total component productivity for each year decreased in 2014 and 2017 compared to the previous year, 2015, 2016 and 2018 increased. Therefore, we could see that the fishery cooperatives have improved productivity due to recent management improvements. In analyzing the productivity each of 20 industrial fishery cooperatives, DMU18(Jeju fish aquaculture cooperatives) increased the most, and this is due to an increase in production of halibut which is a major production variety.

정신질환자 가족기능에 영향을 미치는 요인연구: 발병초기와 만성 정신질환자의 비교

조은정 ( Jo Eun Jung ),김현수 ( Kim Hyunsoo ),김종천 ( Kim Jong Chun ) 한국가족사회복지학회 2017 한국가족복지학 Vol.57 No.-

The primary objective of this study is to examine differences between the persons with recent onset and chronic mental illness in their family function; and analyze factors influence on the family function. The independent variables are divided into four sets: socio-economic, clinical, familial, and social characteristics. The subjects of this study are the 628 with mental disorders, and the sample was selected in Pusan and Gyeong-nam area. The findings of this study can be summarized as followed: The family with chronic mental illness showed higher family function in comparison with recent onset. Result of hierarchical multiple regression analysis show that age of onset, difference between ideal and reality in family function variable only influenced family function for the recent onset group, and activities of daily living, difference between ideal and reality in family function, caregiver`s health, community support variables influenced family function for the chronic group. The results suggest a need for using different treatment approaches for recent onset versus chronic mentally disabled families. Implications for mental health social work practice for family with disabled are suggested.