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Simulation of Various Baffle Types in a Constructed Wetland Sedimentation Tank using CFD
Taegyun Noh, Jechan Jeon, Lee-Hyung Kim 한국습지학회 한국습지학회지 6 Pages
한국습지학회 한국습지학회지 2016, Vol.18 No.3 15 324-329 (6 pages)
to flooding. As such, the concentration of particulate matter must be considered to ensure adequate flow velocity when designing sedimentation basins. Table 1. Schematic of sedimentation and baffle for CFD simulation Case Case 1: No baffle Case 2: Vertical baffles Case 3: Angles baffles Sche- matic Mesh Size of Mesh(mm) 10 10 10 Nodes 11,328 10,361 10,462 Elements 11,066 10,100 10,206 Table 2.... of eco-spaces and habitats, flooding reduction, acquisition of water resources and environmental education. Since the design of constructed wetlands utilizes ecosystems, special consideration must be given to ecological mechanisms, environmental mechanisms and hydrological mechanisms. To ensure the sustainable functionality of constructed wetlands, it is necessary to achieve stable flow rate and velocity, and remove sediments to ensure sufficient space for detention. To enhance the efficiency of... -
Association Analysis of Charcoal Rot Disease Resistance in Soybean
Ali Ghorbanipour, Babak Rabiei, Siamak Rahmanpour, Seyed Akbar Khodaparast 한국식물병리학회 The Plant Pathology Journal 11 Pages
한국식물병리학회 The Plant Pathology Journal 2019, 35권 3호 1 189-199 (11 pages)
simulation, so that K was considered from 1 to 10 and simulation was conducted with period length of 100000 burn in and 100000 Markov Chain Monte Carlo (MCMC) repetition and the optimum K was determined using Evanno et al. (2005) method. Then, membership percentage of each genotype in each group was determined by Spataro et al. (2011) method. Based on this method, a genotype is attributed... In this research, the relationships among the 31 microsatellite markers with charcoal rot disease resistance related indices in 130 different soybean cultivars and lines were evaluated using association analysis based on the general linear model (GLM) and the mixed linear model (MLM) by the Structure and Tassel software. The results of microsatellite markers showed that the genetic structure of the studied population has three subpopulations (K=3) which the results of bar plat also confirmed it.... -
Evaluation of Pathogenic Variability Based on Leaf Blotch Disease Development Components of Bipolaris sorokiniana in Triticum aestivum and Agroclimatic Origin
한국식물병리학회 The Plant Pathology Journal 11 Pages
한국식물병리학회 The Plant Pathology Journal 2018, 34권 2호 2 93-103 (11 pages)
Bipolari ssorokiniana have been little explored, although the relative importance of some components has been in- vestigated by means of simulation (Lancashire and Jones, 1985). Emerging newer strains and races of rust pathogens with increased virulence can be a further threat to wheat pro- duction and productivity at the global level. Heavy yield loss due to leaf blotch disease laid down in... Leaf blotch of wheat caused by Bipolaris sorokiniana is a major constraint to wheat production, causing significant yield reduction resulting in severe economic impact. The present study characterizes to determine and compare pathogenic variability exist/not based on components of leaf blotch disease development and level of aggressiveness due to agroclimatic condition of B. sorokiniana in wheat. A total of 169 virulent isolates of B. sorokiniana isolated from spot blotch infected leaf from... -
Effects of Interrupted Wetness Periods on Conidial Germination, Germ Tube Elongation and Infection Periods of Botryosphaeria dothidea Causing Apple White Rot
한국식물병리학회 The Plant Pathology Journal 7 Pages
한국식물병리학회 The Plant Pathology Journal 2016, 32권 1호 1 1-7 (7 pages)
on slide glasses under substrate treatments. Model simulation using weather data sets revealed that ending infection periods by a dry period of at least 1 hr decreased the daily infection periods, avoiding the overestimation of infection warning. This information can be incorpo- rated into infection models for scheduling fungicide sprays to control apple white rot with fewer fungicide... 42 μm long. Prolonged rewetting up to 40 hr did not restore germ tube elongation on slide glasses under substrate treatments. Model simulation using weather data sets revealed that ending infection periods by a dry period of at least 1 hr decreased the daily infection periods, avoiding the overestimation of infection warning. This information can be incorpo- rated into infection models for scheduling fungicide sprays to control apple white rot with fewer fungicide applications. -
산림유역에서 한계홍수량 분석에 관한 연구
최 현 인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 10 Pages
인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 2017, 제 7권 제 5호 88 943-952 (10 pages)
Sensing, The Korean Society of Remote Sensing. (2005), vol.21, No. 4, pp.317-327. [8] [9] J.H. Kim, D.Y. Um,Analysis of the Vulnerable Area about Inundation on the Upriver Basin of Dam by Flood Simulation Using GIS, Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography. (2007), Vol.27, No.... 홍수예측에 관련된 연구는 주로 느린 홍수위 상승으로 인한 대하천 침수시간 및 지역의 예측 및 보호에 집중되어 왔다. 기온 상승은 해수의 온도를 비정상적으로 변화시키는 엘니뇨, 라니냐 현상의 원인이 된다. 매년 발생하는 자연재해 중 집중호우로 인한 홍수피해는 이를 근본적으로 대처할 수 있 는 방안은 없으나 구체적인 방재대책에 대한 연구가 진행되어 왔다. 본 논문은 지형기후학적 순간단 위유량도 (GCIUH : Geo- morphoclimatic Instantaneous Unit Hydrograph)로 산림유역에서 집중호우 가 강우강도에 따른... -
Effective Use of Multiple Random Walks in P2P
Zita Maria Almeida do Vale, Carlos Ramos, Rosslin John Robles 인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 8 Pages
인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 2014, 제 4권 제 1호 1 1-8 (8 pages)
large amount of traffic and large systems quickly become overwhelmed by the query induced load. This paper explores, through simulation, various alternatives to Gnutella's query algorithm, data replication strategy, and network topology. We propose a query algorithm based on multiple random walks that resolve queries almost as quickly as Gnutella's flooding method while reducing the network tra... and network size estimation a lightweight DHT with an unstructured P2P overlay. However these well-organized techniques are executed irrespective of topologies and network size concerns. To overcome this problem, we propose a query algorithm based on multiple random walks that resolve queries almost as quickly as unstructured P2P overlay method while reducing the network traffic by two orders of magnitude in many cases. We also present simulation results on a distributed replication strategy. -
How to Raise Climate Change Awareness to Early Childhood? Perception of In-Service Teacher and Pre-Service Teacher in Indonesia
Yubaedi Siron, Shania Fajriyah, Nisa Fadhliyah Rahmani 환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 27 Pages
환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 2021, Vol.15 No.1 6 91-117 (27 pages)
(pn92) (pn114) (pn117) 11 Role Playing (pn53) (pn54) (pn56) (pn76) (pn86) (pn96) (pn121) 12 Drawing and coloring activities (n24) (n51) (n58) (n59) (n87) (n94) 13 Natural disaster response simulation (pn2) (pn69) (pn82) 14 Question and answer (pn8) (pn29) (pn82) 15 Motor sensory activities (pn76) 16 Creating environment-based media (pn121) 17 Educational props (pn73) (pn106) Outdoor... This research aims to describe in-service and preservice teachers' perspectives to promote climate change awareness in early childhood education. To engage the study, the respondents join an online interview. This study involved 187 respondents, which separated into two categories: pre-service teachers, in-service teachers, 122 and 65, respectively. This research used a qualitative method. To collect the data, this research uses a structured interview. The data analysis technique used the... -
VIC 모형을 이용하여 모의된 한반도 토양수분 자료의 분석 및 검증
조은샘, 송성욱, 유철상 한국습지학회 한국습지학회지 11 Pages
한국습지학회 한국습지학회지 2017, Vol.19 No.1 6 52-62 (11 pages)
provided by Soil Moisture CCI was analyzed to evaluate the simulation results of VIC model. For the comparison between the simulated and observed data, the CSEOF analysis was applied to indirectly assess the performance of the VIC model rather than simply comparing soil moisture values. The results of this study are summarized as follows. First, the annual variability of soil moisture showed a... 본 연구에서는 지표수문해석모형을 이용하여 과거 30년에 대한 남한과 북한의 토양수분을 모의하고 그 거동 차이를 분석하였다. 아울러 VIC 모형의 모의결과를 평가하기 위해 Soil Moisture CCI에서 제공하는 위성관측 토양수분 자료 를 분석하였다. 모의결과와 관측자료 사이의 비교에는 CSEOF 분석을 적용하여 단순한 토양수분 값의 비교가 아닌 VIC 모형의 성능을 간접적으로 평가하는 방법을 이용하였다. 본 연구의 결과를 정리하면 다음과 같다. 첫 째, 토양수 분의 경년변동은 남한과 북한 모두 전체적으로 유사한 경향을 보였으나,... -
지표수문해석모형을 이용한 남북한 수문순환 비교 평가
송성욱, 이진욱, 조은샘, 유철상 한국습지학회 한국습지학회지 14 Pages
한국습지학회 한국습지학회지 2017, Vol.19 No.1 2 16-29 (14 pages)
h ydrological cycle. In this study, hydrological cycle simulation was carried out for the period of about 30 years fro m 1981 to 2013 for the entire Korean peninsula using the VIC model, a land surface hydrology model. The simulation results are summarized as follow. First, the runoff ratio is 55%~70% in South Korea and 38~56% in North Korea. In p articular, it is worth noting that despite the... 북한에서는 1990년대 이후 경제실패로 인해 대규모의 산림파괴가 이루어 진 것으로 알려져 있으며, 이는 결과적으로 수문순환의 특성을 크게 변화시켰을 것으로 예측되고 있다. 본 연구에서는 이를 확인하기 위해 지표수문해석모형인 VIC 모형을 이용하여 한반도 전역을 대상으로 1981년부터 2013년까지 약 30여년의 기간에 대해 수문순환모의를 수 행하였다. 모의 결과를 요약하면 다음과 같다. 먼저, 유출률의 경우, 남한에서는 55%~70%, 북한에서는 38%~56% 정 도인 것으로 나타났다. 특히 유출률 자체가 작음에도 불구하고 그... -
기후변화에 따른 한강유역의 기상학적 가뭄지수 분석
김덕환, 홍승진, 한대건, 최창현, 김형수 한국습지학회 한국습지학회지 16 Pages
한국습지학회 한국습지학회지 2016, Vol.18 No.4 12 432-447 (16 pages)
Estimates of the spectral aerosol single scattering albedo and aerosol radiative effects during SAFARI 2000, J. of Geophysical Research, 108(D13). Choi (2016). Mega flood simulation occurred by consecutive extreme storm event and typhoon, Master’s Thesis, Inha University, Incheon, Korea. [Korean Literature] Dagnachew, L., Christine, V.C., and Francoise, G. (2003). Hydrological Response of a... 기후변화로 인한 홍수와 가뭄 발생빈도의 증가는 전 세계적인 문제이다. 특히, 가뭄은 환경, 생태, 사회, 경제적인 측면 에 영향을 미치는 심각한 재해로 인식되고 있다. 따라서 이에 대한 연구와 대책 마련이 필요하다. 본 연구에서는 한강 유역의 기상학적 가뭄지수를 산정하여 기후변화가 가뭄에 미치는 영향을 분석하였다. 기후변화에 관한 정부 간 협의체 (Intergovernmental Panel on Climate Change, IPCC)에서 제공하는 대표농도경로 시나리오(Representative Concentration Pathways, RCPs)를 사용하여 기후변화에 따른...