오염된 퇴적물은 연안의 생태계 파괴에 근본적인 원인이 되고 있음에 따라, 선진 외국에서는 1960년대부터 이러한 문제 해결을 위한 새로울 기술개발을 진행하여 오고 있다. 본 연구에서는 유기퇴적물 수거를 위한 시스템 설계 및 개발에 있어서 오탁확산에 의한 2차 오염을 방지하거나 최소화 할 수 있는 Pilot 규모 형태의 흡입식 펌프 준설 시스템을 설계 제작하였으며, 시스템의 성능시험을 통한 적용 가능성을 제시하였다. 시스템 최적화를 위하여 수치해석기법을 통한 퇴적물 수거 시스템의 형상에 대한 성능평가를 수행하고, 제작 시스템의 성능시험에 있어서는 시스템의 정지 상태와 이동 상태에서의 퇴적물 수거 성능에 대한 실험을 수행하였다. 본 연구를 통하여 해저 유기퇴적물의 상부만을 준설할 수 있는 시스템의 개발 가능성을 확인하였다.

The purpose of this study is to investigate the characteristics and suggest the Improvement directions of the facilities in Recreational Forests. This study adopted such various analysis methods as reviewing related documents, surveying the existing sites, and using questionnaire to visitors and managers. The result of this study can be summarized as follows ; 1) The major facilities of Recreational Forests are the lodging, recreation, and sports ones. 2) The primary factor for the visitor's satisfaction is the quality of natural environment, but that for their dissatisfaction is the lack of variety of the available facility. 3) The major problems of facilities in Recreational Forests are their number and design. This study suggests the improvement of accessibility and design of the facilities in the Recreational Forests.

The purpose of this study is to find the bi-polar adjectives for rural stream landscape evaluation by the semantic differential scale and to suggest the major determinants of visual preference in rural stream landscapes. For this, the bi-polar adjectives for rural stream landscape evaluation was found by the method of the reliability test, and the spatial image was analyzed by the factor analysis. The level of visual preference was measured by slide simulation test, and these data were analyzed by the multiple regression. The major findings of this study can be summarized as follows : 1) Of the bi-polar adjectives expressing psychological and physical characteristics, the hi-polar adjectives which demonstrated reliability and consistency run as follows : Bi-polar adjectives expressing psychological characteristics : 'calm-bustling', 'unfamiliar-familiar', 'still-active','depressing-brisk', 'discomfortable-comfortable', 'suppressed-free', 'lifeless-living', 'quiet-noisy', 'unpleasant-pleasant'. Bi-polar adjectives expressing physical characteristics : 'artificial-natural', 'narrow-wide', 'rocky-not rocky', 'desolate-fertile', 'dirty-clean', 'enclosed-open', 'flat-steep', 'not gravelly-gravelly', 'thicketed-not thicketed', 'not weedy-weedy'. 2) Two factors, the harmony and the movement, were derived from the factor analysis for the psychological variables. Three factors, the naturalness, the rock, and the vegetation, were derived from the factor analysis for the physical variables. 3) Rural stream landscape types were classified into four types by the multi-dimensional scaling method. Type III, IV obtained higher rank of visual preference and type I, II obtained lower. 4) For all types, the factors determining the level of visual preference were found to be the harmony, the naturalness, and the vegetation. The visual preference determinants of rural stream landscape need to be considered in improving or restoring the rural stream landscapes.