• 한국환경과학회지
• /
• 제14권10호
• /
• pp.929-935
• /
• 2005

The Monitoring System developed in this study was designed to help manage the recreational forests by gathering data on visitors' profiles and their opinions about recreational use and related facilities, This data could identify for changing situations in forest recreation demand as well as providing information on planning the management and use of the forest areas in advance. The standardized questionnaire had contained visitor profiles, activities, distribution of use by area, distribution us by time, duration of the visit, expenditure of visitors and information on visitor satisfaction and motivation. Also, the questionnaire had included the evaluations visitors' perception of facilities in order to identify the importance and performance of the various facilities, such as recreational and educational facilities, accomodations, directional signs as well as infrastructure. The monitoring system was developed in the object-oriented programming (OOP) environment. Microsoft Visual Basic 6,0 for the program language, Microsoft Access, and Excel program were used to develop the system. The monitoring system was composed of data input, database, and data analysis system, Once data were put into data input system, it automatically transferred to database, and it eventually produced the results of statistical analysis with one step procedure. This study was integrated with facilities and visitor monitoring system to identify the visitor impact at the recreational forests. In addition, this monitoring system would provide necessary and useful background information for management on recreational use of natural resources in a practical manner.

• 한국수자원학회논문집
• /
• 제39권12호
• /
• pp.1067-1080
• /
• 2006

공공사업이나 공공의 목적으로 제공되는 재화의 경험적 평가에 있어 다기준의사결정기법은 광범위한 평가기준을 고려할 수 있기 때문에 의사결정권자에게 적절한 의사결정 도구를 제공하였다. 대립관계문제의 의사결정 방법으로 다기준의사결정기법은 도로, 댐 및 항만건설 등 공공사업 분야에서 이의 유용성을 입증하였다. 본 연구에서는 다기준의사결정기법의 장점을 활용하기 위하여 사회, 경제, 환경 및 사업실현성 측면에서 댐 사업 평가지표를 수자원의 지속가능성에 바탕을 두고 개발하고, 설문조사를 통하여 지표의 중요도를 도출하였다. 사업투자우선순위결정을 위하여 개발된 평가지표를 실제 재개발을 위하여 조사중인 6개의 기존 댐에 적용하였다. 아울러 근래 공공사업의 추진과정에서 문제점으로 나타나고 있는 지자체 및 지역주민의 동의와 협조가 사업시행의 핵심인 점을 고려하여 사업실현성이 경제성, 환경성 및 사회성과 마찬가지로 중요한 요소임을 알 수 있었다.

• 한국지구과학회지
• /
• 제26권8호
• /
• pp.809-820
• /
• 2005

The fluvial sequence developed along the channel margin of meander bends in the midstream of the Yeongsan River consists of channel deposits at the bottom and overbank deposits at the top, and shows a fining-upward trend. The fluvial deposits consist of 7 sedimentary facies, and facies association forms 7 architectural elements. The channel deposits formed as channel bar or point bar. The channel bar deposits consisted of architectural element of gravel bedform were formed by channel lag deposits within the channel; whereas, the channel bar deposits consisted of architectural elements of downcurrent-dipping inclined strata sets, cross-stratified and horizontally stratified sets, and horizontally stratified sets were formed by downstream migration of sand wave or downstream transport of sand by traction current in the upper flow regime conditions within the channel. The point bar deposits consist of architectural elements of down current-dipping inclined strata sets, horizontally stratified sets, cross-stratified and horizontally stratified sets, and laterally inclined and horizontally stratified sets. These architectural elements are thought to have been formed by the combined effects of the migration of sand dunes and the formation of horizontal lamination in the upper flow regime plane bed conditions. The overbank deposits consist of the architectural elements of overbank fine and sand sheet and lens. The overbank fines were formed by settling of mud from slackwater during flooding over floodplain whereas the sand sheet and lens were formed by traction of sands introduced episodically fiom channel to the overbank during flooding.

• 자원환경지질
• /
• 제47권3호
• /
• pp.265-273
• /
• 2014

비재래 자원은 상업적 개발을 위하여 높은 기술력과 많은 투자가 필요로 하는 자연자원이다. '비재래 자원' 용어는 물리적으로 낮은 투과성과 높은 탄화수소 점성도를 가지는 자연 오일저유소로부터 석유와 가스를 분리 생산을 요하는 특수한 탄화수소를 언급한다. 중국과 인도와 같은 개도국이 선진국으로 도입을 위해 필요한 에너지 사용의 급등 및 자원 고갈로 인해서 최근에 비재래 에너지 자원이 각광을 받고 있다. 따라서 비재래 에너지 자원의 상황과 'Web of science' 데이터베이스에 등록된 학술문헌지에 발표된 비재래 오일 가스 연구 활동(2000~2012)을 분석한 결과, 가스 402편과 오일 1,581편을 확인하였다. 국가 별 특성을 보면 미국은 비재래 가스분야, 캐나다는 비재래 오일분야 및 중국은 석탄 메탄가스 부문에서 강세를 보여주고 있다.

• 자원리싸이클링
• /
• 제27권3호
• /
• pp.66-77
• /
• 2018

우리나라의 희유금속 수입액은 6,034 백만불에 달하나 국내 희유금속 자급률은 1% 수준에 불과하여 효율적인 비축제도의 운영이 필요하다. 이에 본 연구에서는 효율적인 비축전략 수립을 위해 비축 대상이 되는 희유금속의 유 무형 위험 요인을 정량화하여 비축 적정성을 평가할 수 있는 체계를 수립하였다. 본 연구에서 개발한 모형은 중장기적인 관점에서 기술변화와 시장변화에 맞추어 우선 비축이 요구되는 희유금속을 선별하고 비축정책의 방향성을 제시하는데 그 목적이 있다. 모형을 통해 도출된 평가결과는 위험상태 행렬(criticality matrix)로 표현되어 희유금속의 안보수준을 정량적으로 측정할 수 있으며 상대비교를 가능케 한다. 따라서 향후 정책수립에 있어 본 논문에서 제안한 모형이 활용된다면 보다 효율적인 비축정책 수립이 가능할 것으로 기대된다.

• 한국환경교육학회지:환경교육
• /
• 제14권2호
• /
• pp.76-94
• /
• 2001

Promoting positive values, attitudes, participation and personal actions on the basis of the acquisition of one's knowledge and skills is emphasized on teaching environmental education. To complete this purpose of environmental education, it is necessary not only to use various and practical educational resources, but also to develop information system, with multimedia and internet, which are effective for learning. This research attempts to assess the consistency of planning, organization and operation of integrated program for social environmental education which was developed for the necessities mentioned above. We surveyed about the accuracy of contents, usefulness, convenience and easiness of Integrated program for social environmental education. Also, we used a questionnaire to clarify the values and attitudes of respondents after they took environmental education. Then, technically, descriptive statistical method has been used to analyze the results of these surveys. Finally, we conduct an examination of the distribution of chi-square to verify the relationship between the learner's experience of using computer and one's concern about environmental issues. The results of this program, developed by research team, can be assessed by following five basic elements: usefulness, practicality, appropriation, efficiency and effectiveness. More than 90% of respondents said that this program is convenient and easy to loam. Also, more than 85% of whole respondents identified that after teaming this program they recognized more clearly what the main contents of environmental education are. In addition, we got positive response from 93% of respondents that they could understand environmental problems. On the other hand, values and attitudes of respondents have not improved a lot after the environmental education compared with the remarkable change in their recognition and understanding of environmental issues; only 34% of respondents responded that they changed their life style for making better environment after teaming this program. But it is clear that they understand much better about the environmental policy after they are educated. Developed by using information system, this integrated program for social environmental education may get different results according to a respondent's experience of using computer. Therefore, the more a respondent got a chance to use computer for a long period of time, the more he/she gave positive evaluation on the convenience and easiness of this program. However, there was no certain relationship between the frequence of using computer and one's understanding of environmental issues. Futhermore, a person who has constant concerns about environmental problems showed more positive attitudes against the understanding of environmental education. This integrated program for social environmental education, characterized by integrated, specialized and efficient educational system, can also be used as a curriculum or teaching materials for environmental education for adults; especially, it would be appropriate for teaching learners at all levels, who have different personal characteristics, to let them acquire virtual education by using information system.

• 한국농공학회논문집
• /
• 제58권4호
• /
• pp.67-74
• /
• 2016

Load Duration Curve (LDC) can be used as a method for load management of point and non-point pollution source because the LDC easily assesses the water quality corresponding to hydrological changes in a watershed. Recently, the application of LDC to total pollution load management is a growing interest in Korea. In this regard, A desktop-based LDC assessment system was developed in this study to provide convenience to users in water quality evaluation. The developed system can simply produce the LDC by using streamflow and water quality data involved in its database. Also, The system can quantitatively inform the success or failure of the achievement for a target water quality at monthly scale. Furthermore, seasonal water quality and point/non-point pollution load in a watershed can be estimated by this system. We expect that the developed system will contribute to establish local and national policies regarding water management and total pollution load management because of its advantages such as the pollution tracking investigation and the analysis of water quality and pollution loading amount in an ungauged watershed.

• 한국자원식물학회:학술대회논문집
• /
• 한국자원식물학회 2011년도 임시총회 및 추계학술발표회
• /
• pp.15-15
• /
• 2011

Vietnam is one of a country with an important strategic position in economic development in the Asia Pacific region. In addition, Vietnam has a longtime agricultural more than 70% of agricultural labor. With favorable natural conditions, agricultural growth in Vietnam is'key'to the developing countries. However, Vietnam's agriculture has still encounter many problems due to drought, climatic conditions, natural disasters. The level of development and agricultural production is weak, the process of post-harvest storage is limited and particularly agricultural competitiveness with other countries is obstacles. In fact, the Government of Vietnam decided to cooperate with other countries have highly developed agriculture such as America, Korea, Japan... hoping to get help and promote agricultural development in a sustainable manner. Since 1992, Vietnam and Korea established formal diplomatic relations. During 20 years of cooperation and development, We have been obtained many satisfactory results not only in fields invest infrastructure, technological science but also exchange experience especially in the agricultural sector. From the Korea ODA project, Vietnam's agriculture in general has made significant progress. With vision, ODA projects continues to support the Central Highlands region in which the Da Lat city, Lam Dong province. Pass the cooperation between Dongguk University and Da Lat University has many positive results. Hopefully in the near future, the relationship between Vietnam and Korea in general will continue to grow strongly, the Korea ODA project will be continue to support Vietnam's agriculture in general and in particularly for the Central Highlands which in Da Lat City, Lam Dong province.

• 한국수자원학회논문집
• /
• 제37권10호
• /
• pp.799-812
• /
• 2004

물 부족을 해결하기 위한 방안으로 지표수-지하수 연계이용에 관한 연구가 최근 국내에서도 관심을 끌고 있다. 지역 여건을 최대한 활용하면서 동시에 친환경적인 지표수와 지하수 연계이용은 통합적인 수자원 관리에 기여하는 바가 클 것으로 예측된다. 본 연구에서는 선행 논문에서 개발된 방법론 즉, 지표수-지하수 연계이용이 시행되어야 할 지역의 선정, 가뭄분석을 통한 물 공급 시나리오 도출, 연계이용 결과 얻어지는 추가 수자원확보량 산정까지 전과정의 현장적용성을 검토하였다. 적지분석을 통해 속초시가 대상지역으로 선정되었고, 도출된 운영 시나리오를 적용한 결과, 가뭄빈도에 따라 약 490만∼740만 ㎥/year의 수자원이 추가적으로 확보되는 것으로 산정되었다. 개발된 방법론은 지표수-지하수 연계이용의 방안과 효과를 정량적으로 제시할 수 있으며, 물 관리 계획수립시 유용한 판단도구로 활용될 수 있을 것으로 사료된다.

• 한국농업기계학회:학술대회논문집
• /
• 한국농업기계학회 2000년도 THE THIRD INTERNATIONAL CONFERENCE ON AGRICULTURAL MACHINERY ENGINEERING. V.II
• /
• pp.354-362
• /
• 2000

In Korea, researches on year-round leaf vegetables production system are in progress, most of them focused on environmental control. Therefore, automation technologies for harvesting, transporting, and grading are in great demand. A robot system for harvesting lettuces, composed of a 3-DOF (degree of freedom) manipulator, an end-effector, a lettuce feeding conveyor, an air blower, a machine vision system, six photoelectric sensors, and a fuzzy logic controller, was developed. A fuzzy logic control was applied to determine appropriate grip force on lettuce. Leaf area index and height were used as input variables and voltage as an output variable for the fuzzy logic controller. Success rate of the lettuce harvesting was 94.12%, and average harvesting time was approximately 5 seconds per lettuce.