간행물

한국농공학회> 한국농공학회논문집

한국농공학회논문집 update

Journal of the Korean Society of Agricultural Engineers

  • : 한국농공학회
  • : 농학분야  >  농공학
  • : KCI등재
  • :
  • : 연속간행물
  • : 격월
  • : 1738-3692
  • :
  • : 한국농공학회지(~2003) → 한국농공학회논문집(2004~)

수록정보
수록범위 : 46권1호(2004)~60권3호(2018) |수록논문 수 : 963
한국농공학회논문집
60권3호(2018년 05월) 수록논문
최근 권호 논문
| | | |

KCI등재

1농업수리구조물의 가뭄 영향 및 기능개선 효과 분석

저자 : 이재영 ( Lee Jae-young ) , 김황희 ( Kim Hwang-hee ) , 신형진 ( Shin Hyung-jin ) , 김해도 ( K

발행기관 : 한국농공학회 간행물 : 한국농공학회논문집 60권 3호 발행 연도 : 2018 페이지 : pp. 1-13 (13 pages)

다운로드

(기관인증 필요)

초록보기

Recently, the frequency and intensity of drought have been increasing due to the sudden abnormal climate in Korea. The occurrence of agricultural drought has been steadily increasing from 5 times in the 1980s to 2000s in 20 years, 6 times in the 10 years from 2000 to 2010, and 4 times in the recent period from 2011 to 2015. Therefore, this study analyzed the effect of water shortage caused by drought by improving the function of agricultural reservoir. The target area analyzed the data such as “Comprehensive Information System for Rural Water” operated by Korea Rural Community Corporation. As a result, we selected the target area as Wanju - gun, Jeollabuk - do in consideration of the rate of water storage compared with the normal 25 years, the completion year of the facility, the area of coverage per reservoir site and the low capacity. As a result of evaluating the improvement effect of agricultural facilities, it was analyzed that the irrigation area increased by about 25.7% when the water level was increased by 1m and the irrigation area increased by about 51.3% when the water level was increased by 2m. The results of the drought impact assessment after improving the function of the agricultural facilities were analyzed that it was effective to improve the function after more than 4m depth.

KCI등재

2기상자료의 결측과 산정에 따른 기준작물 증발산량 공식의 비교 평가

저자 : 윤푸른 ( Yoon Pu Reun ) , 최진용 ( Choi Jin-yong )

발행기관 : 한국농공학회 간행물 : 한국농공학회논문집 60권 3호 발행 연도 : 2018 페이지 : pp. 15-25 (11 pages)

다운로드

(기관인증 필요)

초록보기

Estimating the reference evapotranspiration is an important factor to consider in irrigation system design and agricultural water use. However, there is a limitation in using the FAO Penman-Monteith (FAO P-M) equation, which requires various meteorological data. The purpose of this study is to compare three reference evapotranspiration (ETo) equations in the case of meteorological data missing for 11 study weather stations. Firstly, the FAO P-M equation is used for reference potential evapotranspiration estimation with the actual solar radiation data Rn and the actual vapor pressure ea. Then, in the case of Rn, and ea are missed, the reference evapotranspirations applying FAO P-M, Priestley-Taylor (P-T), Hargreaves (HG) equation were calculated using other meteorological factors. Secondly, MAE, RMSE, R2 were calculated to compare ETo relationship from the ETo equations. From the results, ETo with Hargreaves equation in coastal areas and the Priestley-Taylor equation in the inland areas showed relatively high correlation with FAO P-M when ea data is missed. In the case of Rn data is missed or two weather data, ea, and Rn data are all missed, R2 value in Priestley-Taylor equation was highest in coastal areas, and R2 values in Hargreaves equation were the high values for 7 inland areas. The results of sensitivity analysis showed that net radiation was the most sensitive for P-T and HG equation, and for FAO P-M, the most sensitive factor was net radiation and relative humidity, air temperature and wind speed were follows. Therefore, in considering of the accessibility to the coast, the types of the missing wether data, and the correlation and the magnitude of error, the reference evapotranspiration equations would be selected in sense of different conditions.

KCI등재

3과수원용 스프레이어의 농약 살포 및 비산 예측을 위한 전산유체해석

저자 : 홍세운 ( Hong Se-woon ) , 김락우 ( Kim Rack-woo )

발행기관 : 한국농공학회 간행물 : 한국농공학회논문집 60권 3호 발행 연도 : 2018 페이지 : pp. 27-36 (10 pages)

다운로드

(기관인증 필요)

초록보기

Effective pesticide applications are needed to assure the quality and economic competitiveness of fruit production and lower the risk of spray drift. Experimental studies have shown that better spray coverage and less driftability require an understanding of the transport of spray droplets within turbulent airflows in the orchard and the interaction between droplet dynamics and tree canopies. This study developed a computational fluid dynamics (CFD) model to predict pesticide flows in the orchard and spray drift discharged from an air-assisted orchard sprayer. The model represented the transport of spray droplets as well as droplets captured by tree canopies, which were modeled as a conical porous model and branched tree model. Validation of the CFD model was accomplished by comparing the CFD results with field measurements. Spray depositions inside tree canopies and at off-target locations were in good agreement with the measurements. The resulting data presented that 38.6%∼42.3% of the sprayed droplets were delivered to the tree canopies while 13.6%∼20.1% were drifted out of the orchard, part of them reached farther than 200 m from the orchard. The study demonstrates that CFD model can be used to evaluate spray application performance and spray drift potential.

KCI등재

4최근 60년간 도시 및 농촌 지역의 국지적 기후변화 비교 분석

저자 : 윤동현 ( Yoon Dong-hyun ) , 남원호 ( Nam Won-ho ) , 홍은미 ( Hong Eun-mi ) , 김태곤 ( Kim Ta

발행기관 : 한국농공학회 간행물 : 한국농공학회논문집 60권 3호 발행 연도 : 2018 페이지 : pp. 37-50 (14 pages)

다운로드

(기관인증 필요)

초록보기

Local climate characteristics for both urban and rural areas can be attributed to multiple factors. Two factors affecting these characteristics include: 1) greenhouse gases related to global warming, and 2) urban heat island (UHI) effects caused by changes in surface land use and energy balances related to rapid urbanization. Because of the unique hydrological and climatological characteristics of cities compared with rural and forested areas, distinguishing the impacts of global warming urbanization is important. In this study, we analyzed anthropogenic climatic changes caused by rapid urbanization. Weather elements (maximum temperature, minimum temperature, and precipitation) over the last 60 years (1955-2016) are compared in urban areas (Seoul, Incheon, Pohang, Daegu, Jeonju, Ulsan, Gwangju, Busan) and rural/forested areas (Gangneung, Chupungnyeong, Mokpo, and Yeosu). Temperature differences between these areas reveal the effects of urbanization and global warming. The findings of this study can be used to analyze and forecast the impacts of climate change and urbanization in other urban and non-urban areas.

KCI등재

5푸드마일을 고려한 주요수입곡물의 운송단계별 환경영향 및 저감방안 분석

저자 : 김찬우 ( Kim Chanwoo ) , 김솔희 ( Kim Solhee ) , 정찬훈 ( Jung Chanhoon ) , 서교 ( Suh Kyo

발행기관 : 한국농공학회 간행물 : 한국농공학회논문집 60권 3호 발행 연도 : 2018 페이지 : pp. 51-61 (11 pages)

다운로드

(기관인증 필요)

초록보기

Transportation and storage technologies, which are key drivers for trade, has increased global trade of agricultural products about 165% from 1995 to 2015. Korea imports 76.2% of grain from major food exporters such as USA, Australia, Brazil, and China. The expected long shipping distances from these countries can seriously cause environmental impacts on various environmental categories such as climate change, particulate matter, and acidification. The goal of this study is to assess the environmental implications focused on greenhouse gases (GHGs) and particulate matters (PMs) emissions of imported grains (wheat, corn, and bean) using food miles analysis and life cycle assessment (LCA). The environmental impacts of imported crops are estimated by transportation modes using the national LCI database provided by Korea Environmental Industry & Technology Institute (KEITI). The results of this study are as follows; (1) Imported wheat comes from USA (29%), AUS (27%), and URK (20%), corn is imported from USA (34%), BRA (29%), and URK (16%), and bean comes from BRA (57%), USA (40%), and CHN (2%); (2) the food miles of imported crops (wheat, corn, and bean) are 3.62E+10, 1.30E+11, and 2.20E+10 ton·km, respectively; (3) the potential GHGs and PMs of wheat, corn, and bean are 5.02E+08, 1.67E+09, and 2.84E+08 kg CO2e and 5.89E+05, 1.83E+06, 3.07E+05 kg PM10e, respectively. The outputs of this study could provide environmental impacts and carrying distances of imported agricultural products for preparing a plan to reduce environmental impacts.

KCI등재

6비균질 지반에서 압밀계수의 확률분포가 압밀의 확률론적 해석에 미치는 영향

저자 : 봉태호 ( Bong Tae-ho ) , 허준 ( Heo Joon ) , 손영환 ( Son Young-hwan )

발행기관 : 한국농공학회 간행물 : 한국농공학회논문집 60권 3호 발행 연도 : 2018 페이지 : pp. 63-70 (8 pages)

다운로드

(기관인증 필요)

초록보기

In this study, a simple probabilistic approach using equivalent coefficient of consolidation (ce) was proposed to consider the spatial variability of coefficient of vertical consolidation (cv), and the effect of the probability distribution of coefficient of consolidation on degree of consolidation in heterogeneous soil was investigated. The statistical characteristics of consolidation coefficient were estimated from 1,226 field data, and four probability distributions (Normal, Log-normal, Gamma, and Weibull) were applied to consider the effect of probability distribution. The random fields of coefficient of consolidation were generated based on Karhunen-Loeve expansion. Then, the equivalent coefficient of consolidation was calculated from the random field and used as the input value of consolidation analysis. As a result, the probabilistic analysis can be performed effectively by separating random field and numerical analysis, and probabilistic analysis was performed using a Latin hypercube Monte Carlo simulation. The results showed that the statistical properties of ce were changed by the probability distribution and spatial variability of cv, and the probability distribution of cv has considerable effects on the probabilistic results. There was a large difference of failure probability depend on the probability distribution when the autocorrelation distance was small (i.e., highly heterogeneous soil). Therefore, the selection of a suitable probability distribution of cv is very important for reliable probabilistic analysis of consolidation.

KCI등재

7CFD 해석을 통한 후지 사과 CA 저장고 내의 적정 CO2 농도 조성 검토

저자 : 이상익 ( Lee Sang-ik ) , 홍세운 ( Hong Se-woon ) , 최원 ( Choi Won ) , 김락우 ( Kim Rack-wo

발행기관 : 한국농공학회 간행물 : 한국농공학회논문집 60권 3호 발행 연도 : 2018 페이지 : pp. 71-81 (11 pages)

다운로드

(기관인증 필요)

초록보기

CO2 concentration has a significant effect on quality of cold-stored apples. High indoor CO2 concentrations above 10,000 ppm cause the browning of apples and result in economic loss for farmers. The purpose of this study is to evaluate CO2 concentrations and their distribution in a controlled atmosphere (CA) storage and provide better structural designs to improve the CO2 environment using computational fluid dynamics (CFD) simulations. The CFD model was developed for a real CA storage for apples and applied to investigate the effect of changing the inlet and outlet locations and the aspect ratio of the floor of the CA storage on the spatial distributions of CO2 concentration and the browning of the apples. The lowest CO2 concentrations in existing CA storage with a high aspect ratio of the floor were achieved from the combination of the inlet located at the top of the right side and the outlet located at the bottom of the left side. In modified CA storage with a low aspect ratio, the combination of the inlet and outlet located at top and bottom of left side respectively achieved the lowest CO2 concentrations. The proposed case enhanced the storage performance by reducing total browned apples by 3.6% in storage duration of 210 days. This study is expected to reduce the browning damages of apples in CA storage, and thus greatly prevent economic losses.

KCI등재

8농촌중심지활성화(선도지구) 사업에 대한 성과평가 방안으로서의 논리모델 적용 가능성 탐색: 영월군 지역역량강화 분야를 중심으로

저자 : 김기성 ( Kim Kisung ) , 정미경 ( Jeong Meekyung ) , 나권희 ( Na Kweonhee )

발행기관 : 한국농공학회 간행물 : 한국농공학회논문집 60권 3호 발행 연도 : 2018 페이지 : pp. 83-94 (12 pages)

다운로드

(기관인증 필요)

초록보기

This study aims to apply the logic model in order to evaluate outcomes of revitalization projects of rural centers as a part of the regional capacity strengthening in Yeongwol-gun. According to the study results, first of all, it was unclear to answer for questions what, how and why to lead the project, when examining logical associations among program inputs, activities, outputs and outcomes. As an alternative method, the logic model has been applied, and this in turn led to clarify the goals, inputs, contents, outputs, outcomes as well as overall outcome goals and purpose of the current projects. Second of all, the initial, intermediate and long term outcome goals of the current project were indistinctly specified, and moreover, their evaluation methods were also unclear. By applying the logic model to the current regional capacity strengthening project, it was able to figure the distinction between program outputs and outcomes, and specify initial, intermediate and long term target goals as well as their evaluation tools. It is therefore to conclude that the logic model has a possibility to apply to a project evaluation, especially in the sense that this method considers efficiency, effectiveness and accountability of each project.

KCI등재

9수문곡선 분리를 통한 댐 유입량 평가

저자 : 정영훈 ( Jung Younghun )

발행기관 : 한국농공학회 간행물 : 한국농공학회논문집 60권 3호 발행 연도 : 2018 페이지 : pp. 95-105 (11 pages)

다운로드

(기관인증 필요)

초록보기

Understanding the composition of the dam inflow can improve the efficiency of dam operation considering the seasonal characteristics. Hydrograph analysis is one of the methods to identify the characteristics of dam inflow. In addition, baseflow separation on the dam inflow can be affected by anthropogenic influences depending on dam locations. In this regard, the objectives of this study are 1) to analyze yearly and monthly baseflow contribution to the dam inflow and 2) to compare the baseflow contribution to the inflow in dams located upstream and downstream of the watershed. The result shows that the estimated baseflow index was smaller in the upstream dams compared to the downstream dams. Discharge from the upstream water infrastructure including dams and reservoirs can be a part of inflow into the downstream water infrastructure. Based on this scenario, the discharge regulated from the upstream dam could lead to overestimation of baseflow contribution to inflow into the downstream dam. We expect that the results from this study elucidate the role and function of dams and hence, contribute to the efficient operation of dams located in the upstream and the downstream of the watershed.

KCI등재

10영농기와 비영농기에 강우에 의해 논으로 유입되는 질소공급량 분석

저자 : 최동호 ( Choi Dongho ) , 최순군 ( Choi Soon-kun ) , 허승오 ( Hur Seung-oh ) , 홍성창 ( Hong

발행기관 : 한국농공학회 간행물 : 한국농공학회논문집 60권 3호 발행 연도 : 2018 페이지 : pp. 107-112 (6 pages)

다운로드

(기관인증 필요)

초록보기

In this study, we conducted to analyze and quantify the amount of nitrogen supply into the rice paddies from the rainfall during cropping and non-crop periods. Rainfall monitoring conducted 85 times from June 2015 to December 2017. Nitrogen supply of cropping season ranged from 5.37 to 7.70 kg/ha, while non-cropping season were supplied from 3.97 to 4.42 kg/ha. The supply of T-N in the crop period was more than 60% of the total supply. And as a result of analyzing the correlation between the characteristics of rainfall and the supply amount, nitrogen concentrations in rainfall were decreased with increasing rainfall, but the supply amount was increased. Therefore, efforts should be made to increase the rainfall utilization and to increase the nitrogen supply of crops by increasing rainfall storage through drainage management.

12
권호별 보기
가장 많이 인용된 논문

(자료제공: 네이버학술정보)

가장 많이 인용된 논문
| | | |
1연안해역에서 석유오염물질의 세균학적 분해에 관한 연구

(2006)홍길동 외 1명심리학41회 피인용

다운로드

2미국의 비트코인 규제

(2006)홍길동심리학41회 피인용

다운로드

가장 많이 참고한 논문

(자료제공: 네이버학술정보)

가장 많이 참고한 논문

다운로드

2미국의 비트코인 규제

(2006)홍길동41회 피인용

다운로드

해당 간행물 관심 구독기관

농촌진흥청 서울대학교 환경부 강원대학교 충북대학교
 276
 24
 15
 15
 13
  • 1 농촌진흥청 (276건)
  • 2 서울대학교 (24건)
  • 3 환경부 (15건)
  • 4 강원대학교 (15건)
  • 5 충북대학교 (13건)
  • 6 전북대학교 (12건)
  • 7 충남대학교 (11건)
  • 8 부산대학교 (7건)
  • 9 건국대학교 (7건)
  • 10 경북대학교 (6건)

내가 찾은 최근 검색어

최근 열람 자료

맞춤 논문

보관함

내 보관함
공유한 보관함

1:1문의

닫기