http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
허주녕,김태곤,Heo, Joo-Nyung,Kim, Tae-Gon 한국유기농업학회 2013 韓國有機農業學會誌 Vol.21 No.2
The Purpose of this paper is to estimates consumers' willingness to pay for Urban Agriculture Park attributes. we analysis the marginal WTP by choice experiment method. Choice experiment (CE) is designed to elicit the marginal WTP differences among urban agriculture park attributes (garden scales, learning and experience area, leisure and relaxation area and fund). The results of multinomial logit model are meaningful, the total marginal WTP on the urban agriculture park attributes is 18,852 won. gardens scales is 2,949 won, learning and experience area is 11,284 won, leisure and relaxation area is 4,619 won. In the current laws, the facilities related to urban agriculture park is not. Taking advantage of the new urban agriculture park, Amendments of the law is required.
비모수적 방법을 이용한 도시농업의 다원적 기능 가치평가
허주녕 ( Heo Joo-nyung ),김태곤 ( Kim Tae-gon ) 한국유기농업학회 2012 韓國有機農業學會誌 Vol.20 No.4
In this regard, urban agriculture is developing into a variety of shapes. Urban agriculture includes various types, such as industrial agriculture, experience agriculture, educational agriculture, exchange agriculture and cyclic agriculture. The result of evaluation on citizens’ values about multi-functions provided by urban agriculture can be used for policy making to overcome crisis of urban agriculture due to urban development and industrialization and to vitalize urban agriculture. The willingness-to-pay for the maintenance fund was categorized into vegetable garden users, general consumers, and all respondents, for analysis. The estimation results for the valuation of multi-functionality were KRW 20,367 per household for general consumers; KRW 22,174 for urban agriculture users; and KRW 21,467 for all respondents.
핀-휜 구조물을 삽입한 채널의 열전달 특성에 관한 수치해석
허주녕(Ju-Nyoung Heo),김지훈(Ji-Hoon Kim),손영석(Young-Seok Son),신지영(Jee-Young Shin) 대한설비공학회 2010 대한설비공학회 학술발표대회논문집 Vol.2010 No.11
Cooling of the channel with pin-fin structure is a promising choice for the efficient heat transfer. Complex pin-fin structure shows highly irregular behavior like porous media. This study shows the numerical analysis on the characteristic of heat transfer of a channel with pin-fin structure. It predicts the experimental data quite well at the high porosity region with large diameter.
열전달 향상 장치를 삽입한 평판형 태양열 집열기의 열전달 특성과 압력강하에 관한 수치해석
허주녕(Joonyoung Heo),김지훈(Jihoon Kim),신지영(Jeeyoung Shin),손영석(Young-Seok Son) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10
Heat transfer and pressure drop characteristics of a flat-plate solar collector have long been investigated since they were widely used. The use of artificial roughness in different forms, shapes and sizes is the most common and effective way to improve the performance of a solar collector. In the present study, numerical analysis was performed on heat transfer and pressure drop in a rectangular channel with rib arrays. The uniform heat flux is applied to the channel from the upper side. The forms of ribs considered in this study were rectangular rib, rib with groove, and baffle. The ribs were deployed transverse or aligned 60° to the main direction of the flow. Air is the working fluid with the flow rate in terms of Reynolds numbers ranging from 3200 to 17800. Nusselt number and friction factor were investigated to predict the performance of the system with various type of roughness geometry. The average Nusselt number and pressure drop were increased with the increase of velocity. The highest heat transfer occurred for the rib with groove which was aligned 60° to the main flow direction.
사각채널내에 설치된 딤플/돌출의 높이 변화에 따른 열전달 및 압력강하 특성에 관한 수치해석
김지훈(Ji-Hoon Kim),허주녕(Ju-Nyong Heo),신지영(Jee-Young Shin),손영석(Young-Seok Son) 대한설비공학회 2010 대한설비공학회 학술발표대회논문집 Vol.2010 No.11
In the present study, numerical analyses were performed on heat transfer and pressure drop in a rectangular channel with dimple and protrusion arrays of different height. The dimples/protrusions were installed at both top and bottom walls of the rectangular channel. The dimple and protrusion depths are 0.125, 0.25, 0.375 times diameter. In case of the dimple, the highest Nusselt number occurred at the rear side of the dimple, and the average Nusselt number tended to decrease slightly with increase of depth. On the other hand, in case of protrusion, the highest Nusselt number occurred at the front side of the protrusion, and the average Nusselt number was increased with the increase of height. In both dimple and protrusion, the average Nusselt number and pressure drop were increased with the increase of velocity. Performance factor was decreased with the increase of velocity, and it was found that the best performance factor was obtained in the low velocity region.
학교 텃밭의 지속적인 운영방안에 관한 연구 - 서울특별시 초등학교의 학교 텃밭 실태조사를 바탕으로 -
최이진,이재정,조상태,장윤아,허주녕,Choi, I-Jin,Lee, Jae Jung,Cho, Sang Tae,Jang, Yoon Ah,Heo, Joo Nyung 한국조경학회 2018 韓國造景學會誌 Vol.46 No.4
본 연구는 학교 텃밭의 양적인 확대뿐만 아니라, 지속적인 운영 방안을 제시하는 것을 목적으로 한다. 서울시내 599개 초등학교를 대상으로 설문조사를 실시한 결과, 설문조사에 응답한 161개 학교 모두가 학교 텃밭을 조성 운영하고 있었다. 서울시 초 중 고 포함 학교 텃밭 면적은 $166,901m^2$, 평균 $131.2m^2$이고, 설문조사에 응답한 161개교의 학교 텃밭 면적은 $65,493m^2$, 평균 $363m^2$, 학생 1인당 $1.15m^2$로 조사되었다. 학교 자체적으로 조성 운영하는 경우는 11.8%, 학교 자체적으로 조성하여 운영하다가 기관 지원 사업을 통해 재조성 혹은 환경개선을 하여 운영하는 경우가 50.3%로 조사되었다. 학교 텃밭은 조성위치에 따라 혼합형(교내 텃밭과 상자텃밭 조합)이 34.8%로 많았고, 교내 텃밭형이 32.9%, 상자 텃밭형이 29.2%, 교외 근린텃밭을 활용하는 교외 텃밭형 학교도 3.1%였다. 텃밭 운영 담당자는 담당교사가 51.6%로 가장 높았으며, 텃밭 조성 시에 함께 조성된 시설물은 소형 온실 농기구 보관함이 26.1%로 가장 많았으나, 별도의 기반시설이 함께 조성되지 않은 경우도 21.7%였다. 텃밭 운영에 있어서 어려운 점은 텃밭 관리가 34.2%로 가장 높았고, 텃밭의 지속적 운영을 위해 가장 필요한 요소로 물리적 환경 개선과 유급관리인 고용이 필요하다는 의견이 각 32%로 높게 조사되었다. 학교 텃밭 조성목적은 교육환경 조성(81.6%)이 가장 높았으며, 텃밭관리에 필요한 정보는 주로 주변 자문(67.8%)을 통해서 얻고 있었다. 텃밭에서 발생하는 식물쓰레기를 친환경적으로 퇴비화하는 학교는 45.8%였다. 학교 텃밭의 교육적 활용이 학생들에게 미치는 영향에 대해서는 매우 효과적이라는 응답이 63.2%, 효과적이라는 응답이 36.8%로 조사대상 학교 전체가 긍정적인 응답을 하였다. 본 연구는 서울지역 초등학교를 대상으로 텃밭 운영 실태를 파악하고, 지속적인 운영방안으로 학교 실정에 맞는 텃밭조성 지원, 양질의 교육프로그램적용 및 교구개발, 담당교사 직무연수 확대, 전문 강사 지원방법 모색, 텃밭관리조직 운영의 필요성을 제안하는데 의의가 있다고 생각된다. This study surveyed 599 elementary schools in Seoul to provide measures for the quantitative expansion and sustainable operation of environmentally-friendly school garden. Of all schools, 161 schools had formed and were operating school gardens. The total area of school gardens was $166,901m^2$ and the mean area was $131.2m^2$ in elementary, junior high and high schools in Seoul. Meanwhile, the total area of school gardens was $65,493m^2$ and the mean area was $363m^2$ in 161 schools that participated in the survey, indicating $1.15m^2$ per student. Of these schools, 11.8% were operating gardens themselves, while 50.3% were operating gardens that had been newly renovated or environmentally improved by institutional support projects after initially managing gardens themselves. According to the locations of school gardens, mixed-type gardening (a combination of school gardening and container vegetable gardening) accounted for 34.8%, followed by school gardening at 32.9%, container vegetable gardening at 29.2%, and suburb community gardening at 3.1%. Those in charge of garden operations were teachers at 51.6%, comprising the largest percentage. Facilities built when forming the garden included storage facilities for small-scale greenhouses and farming equipment at 26.1%, accounting for the largest percentage. No additional facilities constructed accounted for 21.7%. The greatest difficulty in operating gardens was garden management at 34.2%. The most needed elements for the sustainable operation of gardens were improvement in physical environment and the need for hiring a paid garden, each accounting for 32%. The most important purpose for school gardening was creating educational environments (81.6%). The major source for gaining information on garden management was consultation from acquaintances (67.8%). Schools that utilize plant waste from gardens as natural fertilizers accounted for 45.8% of all schools. Responses to the impact of operating school gardens for educational purpose were positive in all schools as 'very effective' in 63.2% and 'effective' in 36.8%. This study was meaningful in that it intended to identify the current status of the operation of school gardens in elementary schools in Seoul, support the formation of school gardens appropriate for each school with sustainable operation measures, implement a high-quality education program, develop teaching materials, expand job training opportunities for teachers in charge, devise measures to support specialized instructors, and propose the need for a garden management organization.