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Character Agent와 가상현실 기법을 이용한 웹사이트 개발에 관한 연구 : 기존 사이트 분석을 중심으로
손세환,김명희,김종기 동서대학교부설연구센터 2001 연구센터논문집 Vol.4 No.1
Web environment had developed with haste degree than other business. Research about information transmission method in web environment is gone in many-sidedness degree these day. Field that attract user's interest latest among it is character and virtual reality. specially, virtual reality begins in VRML and much skill is appearing to intel's 3D skill recently. But, eminent skill is site that is not to speak that is standard. Users are applying various imagination skill and sites of several form are appearing. Wish to analyze finding virtual reality site that appear recently and is consultable in site model development.
금강 상류 구간 내 샛강형 수로의 서식환경 특성이 저서성 대형무척추동물 군집 구조에 미치는 영향
손세환,최종윤 한국하천호수학회 2021 생태와 환경 Vol.54 No.1
Microhabitat In the upper stream is created by various environment variables such as the bottom substrate and the physicochemical factors, and may influence the distribution of benthic macroinvertebrates. We investigated the bottom substrate and environmental variables influencing the distribution of benthic macroinvertebrate in 26 stream-type waterways established at upper reaches of Geum River. During study period, total 85 families, 160 species, 9305 individuals of benthic macroinvertebrates were recorded. The stream-type waterways, where the bottom substrates consist mainly of pebble (16~64 mm) and cobble (64~256 mm) or with rapid water velocity (more than 0.2 m/s) and high dissolved oxygen (more than 120%), were supported by high species diversity of benthic macroinvertebrate. Hierological cluster analysis and the nonparametric multidimensional scale (NMDS) divided 26 stream-type waterways into a total of three clusters. In Cluster 1, the invertebrate species, such as Branchiura sowerbyi, Cloeon dipterum, Ischnura asiatica, Paracercion calamorum, and Radix auricularia, closely related to aquatic macrophytes, and Chironomidae spp., Limnodrilus gotoi, and Tanypodinae sp. were abundant in waterways, with high coverage of silt and clay as well as high turbidity and total nitrogen. The benthic macroinvertebrate species (Cheumatopsyche brevilineata, Drunella ishiyamana, Dugesia japonica, Ephemera orientalis, Gumaga KUa, Macrostemum radiatum, Potamanthus formosus, Semisulcospira libertine, Stenelmis vulgaris, and Teloganopsis punctisetae) included in Cluster 2 were dominated in sites with high cover rates of pebble and gravel. Cluster 3 was predominantly covered by the Cobbles, was supported by Simulium sp. Such a clear distinction in the study sites means that each stream-type waterways is governed by a clear habitat environment. In the case of some sites with low species diversity, improvement measures are required to restore nature, such as improving the function of inflows and outflows, creating meandering channel, and inducing the settlement of littoral vegetation.
손세환 ( Se Hwan Son ),김진영 ( Jin Young Kim ),조재익 ( Jae Ick Jo ),공동수 ( Dong Soo Kong ) 한국물환경학회 2011 한국물환경학회지 Vol.27 No.5
This study was performed to find out the distribution aspect of benthic macroinvertebrates according to altitude in a mountain stream (a main stream: Buk stream, a tributary: Hangye stream) of Seoraksan. The survey was conducted from August to November in 2010. All survey sites were very sound because the mountain was being maintained as a protection area of the national park. Water quality and the composition of substrata were similar in all sites. Benthic macroinvertebrates of 3 phyla, 4 classes, 9 orders and 84 species occurred in the stream. Along with the decline of altitude, shredders of the functional feeding groups (FFGs) decreased, while collector filterers increased. In particular, collector filterers increased sharply at the altitude of 600~500 m (S.E.L.). Benthic macroinvertebrates showed low similarity between the uppermost site and the lower sites. Altitude appeared to be a significant factor that influence the structure and distribution of benthic macroinvertebrate community.
해양구조물의 기하학적 형상을 이용한 초기생산단가 산정과 곡판 및 내부재 상관관계 분석
손세환(Shon Se-Hwan),남종호(Nam Jong-Ho) 대한조선학회 2011 대한조선학회 학술대회자료집 Vol.2011 No.6
해양구조물이나 선박과 같은 대형구조물은 매우 복잡한 생산 공정단계를 거치므로 생산에 필요한 정보를 사전에 파악하는 것이 매우 유용하게 활용될 수 있다. 초기설계단계에서 구조물의 제작난이도를 사전에 분석한다면 다양한 설계를 통하여 생산단가를 고려한 최적의 설계결과를 도출할 수 있다. 본 연구에서는 기하학적 형상을 이용한 해양구조물의 초기생산단가 산정지수를 산출하여 생산단가에 대한 정보를 정량적으로 나타내고자 한다. 구조물의 외판 및 내부재 제작난이도를 가늠하는 지수를 개발하고 양 지수 간의 상관관계를 분석하여 종합적인 생산단가지수를 도출한다. 형상변화에 따른 해양구조물의 외판 및 내부재의 생산단가를 계산하고 이를 통하여 초기설계단계에서 다양한 설계검증을 수행한다.