• 한국지리정보학회지
• /
• 제25권4호
• /
• pp.222-237
• /
• 2022

본 연구에서는 우리나라의 미래 산지면적의 변화를 전망하기 위해 요인들의 인과관계에 기반한 System Dynamics 모델을 개발하여 2050년까지 산지전용 수요 변화를 전국 단위로 분석하였다. 모델을 개발하기 위한 산지전용 형태의 유형을 농업용지, 산업용지, 주거·상업용지, 공용·공공용지로 분류하여 시계열 자료로 구축하였다. 각 산지전용 유형에 영향을 주는 피드백 인자를 분석한 결과, 농업용지와 산업용지는 모두 GDP와 직접적인 음과 양의 관계를 가지는 것으로 나타났고, 공용·공공용지는 GDP와 직접적인 양의 관계가 성립하지만 생활용 목적이 대부분이기 때문에 인구수와도 직접적인 영향을 주고받는 것으로 나타났으며, 주거·상업용지의 경우에는 경기상황을 대표하는 GDP와 주택건축허가량에 직접 영향을 받는 것으로 분석되었다. 또한 각 유형에 영향을 주는 GDP, 주택건축허가량, 인구의 변수는 하위 단의 생산토지, 생산자산, 고용자수 등의 변수와 순환적 관계가 성립하고 이러한 변수에 의해 유발되는 유형별 전용면적은 생산토지에 다시 영향을 주는 피드백 관계를 나타내는 것으로 나타났다. 그리하여 본 연구에서는 한국은행, 통계청에서 제공하는 GDP와 인구자료와 기존 연구에서 도출된 주택건축허가량 시계열 자료를 이용하여 각 유형을 직접 추정하는 모델을 개발하였다. 그 결과 농업용지 전용수요는 지속해서 감소하고, 2050년까지의 산업용지 수요는 2020년 전용면적 대비 약 39% 정도 감소하는 것으로 나타났으며, 공용·공공용지의 경우 2050년까지 감소추세를 나타내며 인구가 감소하는 2029년 이후부터 수요의 감소율이 지속해서 증가하는 것으로 분석되었으며, 주거·상업용지의 수요는 가구수 감소와 더불어 2034년 정점 대비 약 1,634ha까지 줄어드는 것으로 예측되었다. 이렇듯 산지전용은 미래에도 지속해서 발생하기 때문에 산지의 보호와 국토의 균형적 발전을 위해서는 현재의 산지이용 체계를 개선하여 합리적인 이용을 유도할 수 있는 법률과 정책이 수반되어야 할 것으로 사료된다.

• 한국조경학회:학술대회논문집
• /
• 한국조경학회 2007년도 Journal of Landscape Architecture in Asia Vol.3
• /
• pp.118-126
• /
• 2007

Seoul has been the former capital from Joseon founded in 1932 by this time for 600 years. Seoul populated by some 10,290,000 people is the largest city in Korea. There are lots of cultural inheritance such as the castle town and 5 palaces including Gyeongbokgung in Seoul. Especially neungs(royal tombs) from 27 generations of king and queen in the Joseon dynasty during 518 years are very important cultural inheritance. The royal tombs were built from the castle town to the radius outside 4km within 40km pivoting on Seoul. Joseon royal tombs might have significant cultural value, which are representative Korean people's spirits for ancestor worship. After the 1945 Liberation of Korea those are having been managed by Office of Cultural Properties after Ministry of Education. This paper tried to find the changing process of the conservation and maintenance, the location of royal tomb area, the changing process of royal tomb, the area changing clue of modernization process, and in the historical city, Seoul. The royal tombs in the Joseon dynasty of the radius outside 4km within 40km pivoting on Seoul have been contributed to providing the metropolitan, Seoul population with the cultural and green spaces for 600 years. In the Joseon dynasty the royal tombs had been taken charge of thoroughly by the Royal Household with Neungchamboing system from Confucian background for ancestor worship. There after they had been damaged somewhat by the Japanese Imperialism period, the Korean War, and the pressure of urbanization. But the original state has been preserved well by state management. The royal tombs in the Joseon dynasty has been kept the culture of royal tomb's and memorial services with stone sculptures for 518 years. Also there are lots of documentary records of royal tombs. The memorial services of the tombs are held by Jongyakwon of Jeonju Lee family every year. The royal tombs somewhat damaged are needed to the original state of the transferred right of managing agency by the related national bodies.

• 한국구조물진단유지관리공학회 논문집
• /
• 제20권2호
• /
• pp.60-66
• /
• 2016

본 연구는 실리콘계 정포제의 특성에 따른 폴리우레탄 폼 지수제의 cell 구조와 흡수량 변화를 알아보기 위하여 6종의 정포제를 사용하여 폴리우레탄 폼 지수제를 제조하여 FE-SEM으로 분석한 결과 실리콘 정포제의 실록산 주사슬 말단에 PO n개가 결합되어 있는 DC-193, DC-2585, DC-5125, DC-198의 cell 구조는 close cell로 확인이 되었고, 실리콘 정포제의 실록산 주사슬 말단에 EO n개가 결합 되어 있는 DC-5043과 DC-5598은 open cell 구조로 나타났다. 또한 cell 구조 변화에 따른 흡수량 에서는 close cell의 크기가 가장 세밀하고 균일한 DC-193의 흡수량이 가장 적게 나타나 내수성이 가장 우수한 것으로 나타났으며 open cell의 크기가 가장 크게 형성된 DC-5043의 흡수량이 가장 많은 것으로 나타났다. 이들의 방수성능을 콘크리트 구조물을 모사하여 시험한 결과 누수가 없음을 확인하였다.

• 대한토목학회논문집
• /
• 제39권5호
• /
• pp.647-656
• /
• 2019

본 논문은 소규모 공동주택 소유자를 대상으로 건축물유지관리업무를 구성하는 요소들의 상대적 중요도를 분석하는 논문이다. 이를 통해 효과적인 관리방안을 수립하기 위한 기초자료를 제공하고자 한다. 연구의 목적을 달성하기 위해, 본 논문은 국토교통부가 제시한 건축물유지관리 가이드라인을 기초로 하여 유지관리업무의 구성요소들을 추출하고, 그 중요도를 분석하였다. 연구 결과는 다음과 같다. 첫째, 1차 수준의 분석 결과, 응답자들은 전반적인 주택유지관리에 있어 '시설 관리'가 가장 중요한 것으로 인식하고 있었고, 다음으로 '입주 관리', '보안 관리', 그리고 '유지관리 행정' 순으로 중요하다고 판단하고 있었다. 둘째, 2차 수준의 분석 결과, 유지관리 행정의 하위요인들에서는 예산 결산이 가장 중요하다고 판단하였고, 시설 관리의 하위요인들에서는 청소가 가장 중요하다고 판단하였으며, 보안 관리의 하위요인들에서는 차량에 대한 관리가 가장 중요하다고 판단하였고, 마지막으로 입주 관리의 하위요인들에서는 관리업무 홍보가 가장 중요하다고 판단하는 것으로 나타났다. 이 결과를 통해 본 연구는 소규모 공동주택의 관리를 위해 지자체별 관리 공단을 설립하는 것이 중요하다는 결론에 이른다.

• 대한전자공학회논문지TC
• /
• 제43권5호
• /
• pp.45-50
• /
• 2006

광가입자망의 궁극적인 목표라 할 수 있는 FTTH 서비스가 2005년을 시작으로 본격 추진되고 있다. FTTH 서비스를 위해서는 시스템 개발과 동시에 국사에서 가입자까지 이르는 다양한 자재로 구성되는 광선로시설의 효율적이고, 경제적인 구축 기술 및 시공품질 확보를 필요로 한다. 본 논문에서는 일반주택지역을 대상으로 FTTH 구축에 소요되는 선로시설에 대한 기술적 특징을 조사 분석하고, 주요 시설별 기능요구사항 및 선로시설 구축에 요구되는 특성 등을 분석하였다.

• 한국조명전기설비학회:학술대회논문집
• /
• 한국조명전기설비학회 2007년도 추계학술대회 논문집
• /
• pp.291-294
• /
• 2007

Countries in the world are setting up policies to implement anti-global warning measures to actively cope with the Agreement on Climate Change. Rising problems related to energy and environment prompted research and development efforts to highly efficient electric instrument and environmentally friendly products to secure resources and save energy Korea's high dependency on imported energy and its lack in natural resources make it urgently necessary to develop energy efficient instrument and equipment that can save energy. Every household now uses a transformer, which is very important instrument among others. A variety of technologies to manufacture transformers are currently used along with efforts to develop new materials. Development nit of high efficient transformers is called for by the time and has direct economic impact on suppliers and consumers. In addition, it is desirable to install a transformer that is trustworthy, secure, low on loss, anti-incident capable, small, anti-flammable, environmentally friendly, cost-efficient high-frequency resistant and easy for maintenance. To do this, it is necessary to look deeper into a highly efficient transformer that can save energy. This paper will discuss the types and characteristics of various transformers and propose ways to save energy and raise efficiency tv analyzing a environmentally friendly amorphous transformer.

• 한국수소및신에너지학회논문집
• /
• 제14권4호
• /
• pp.348-358
• /
• 2003

According to Electricity Acceleration Law of Rural Area recently, the needs for replacement of a small scale diesel power generation facility which supplied electricity to 10-50 households Remote Islands has been revealed due to high operating and maintenance cost of Diesel Power Generation. Optimization of electric power system for Small Remote Islands must be made considering the economics, reliability and stability as power sources and estimation of total construction cost of those power stations. For its purpose, an assessment of power generation options such as Photovoltaic, Fuel cell, Wind-hybrid was implemented, economic evaluation of power supply shows the Photovoltaic, Fuel Cell for few household's islands and Diesel, Wind-hybrid for more inhabited islands. Power supplied by Diesel shows the best response to increasing electric demand and system reliability even with its lower economic value. Those who are in charge of power planning have to pay attention to system reliability, stability and operating characteristics of candidate's power supply besides its economics.

• 대한간호학회지
• /
• 제30권2호
• /
• pp.425-436
• /
• 2000

This study was carried out to assess home health care needs for welfare of solitude elderly person. The subjects of this study were 90 welfare solitude elderly person in Pusan City. Data were obtained by interview and observation using a structured questionnaire. The collected data were analyzed by t-test, ANOVA with SAS program. The results are as follows. 1. Among the home care nursing needs, environmental nursing needs topped the list, followed by spiritual, physical, psychological, communication & health knowledge and ADL nursing needs. 2. Home care nursing needs showed a significant differences by the general characteristic of the respondents. .In the age, there were significant differences in physical and communication & health knowledge nursing needs. .In the religion, there were significant differences in spiritual nursing needs. .In the marital status, there were significant differences in environmental nursing needs. .In the nursing provider, there were singificant differences in ADL, environmental and communication & health knowledge nursing needs. .In the medical benefit, there were significant differences in ADL, environmental, physical and communication & health knowledge nursing needs. .In the disease, there were significant differences in ADL nursing needs.. .In the household maintenance, there were significant differences in environmental nursing needs.

• 상하수도학회지
• /
• 제27권1호
• /
• pp.129-138
• /
• 2013

Water interruption is often caused by a rupture in the branch-like singular pipeline. This will cause critical complaints from household and may decrease public service quality. As an alternative of singular pipeline, additional parallel pipeline could be installed for sustainable water supply. This system is called double pipeline system and able to be utilized for water transmission line between treatment plant and distribution reservoir. Construction of double pipeline was thought to increase capital cost, which can be an issue to waterworks authorities. Reducing capital cost was possible by means of installing connectors between two parallel pipelines because of reduced diameter of each pipe. To obtain optimal design condition for connectors, it was necessary to compare water pressure according to accident location, to investigate flow according to connection pipe spacing, connection pipe diameter, and aging of pipe. Reliable and economical connection layouts were determined based on these results. The cost estimation for each design condition was carried out. Cost was approximately reduced by 20 ~ 30 % compared to the double pipeline without connections. In addition to this, connection between double pipelines could expect extra benefits for maintenance since the pipe could be repaired and rehabilitated without interruption.

• Bulletin of the Korean Chemical Society
• /
• 제35권10호
• /
• pp.3005-3008
• /
• 2014

Human ChlR1 protein (hChlR1), a member of the cohesion establishment factor family, plays an important role in the segregation of sister chromatids for maintenance of genome integrity. We previously reported that hChlR1 interacts with hFen1 and stimulates its nuclease activity on the flap-structured DNA substrate covered with RPA. To elucidate the relationship between hChlR1 and Okazaki fragment processing, the effect of hChlR1 on in vitro nuclease activities of hFen1 and hDna2 was examined. Independent of ATPase activity, hChlR1 stimulated endonuclease activity of hFen1 but not that of hDna2. Our findings suggest that the acceleration of Okazaki fragment processing near cohesions may aid in reducing the size of the replication machinery, thereby facilitating its entry through the cohesin ring.