디지탈 교환기 시스템용 결함 허용 시스템에 관한 연구

김현욱,이동욱,한창호,문태수,이광배,박석천 明知大學校 産業技術硏究所 1994 産業技術硏究所論文集 Vol.13 No.-

A Fault tolerant system is one that can continue to correctly perform its specified tasks in the presence of hardware failures and software errors. This paper discribes hardware redundancy of fault tolerant methods used in the present digital switching systems, and proposes several new fault tolerant methods for digital switching systems. In addition, are compared and analyzed reliabilities between thr present and the new facult tolerant methods.

다중 프로세서 시스템상에서 Fire Fly 프로토콜을 지원하는 캐쉬 제어기 시스템 구현에 관한 연구

문태수(Tae Soo Moon),이동욱(Dong Ug Lee),이광배(Kwang Bae Lee),김현욱(Hyen Ug Kim),최진규(Jin Gyu Choi) 대한전자공학회 1993 대한전자공학회 학술대회 Vol.1993 No.11

슬라이딩 모드를 이용한 HYBRID PID형 퍼지제어기

문준호(jun-ho Moon),조종훈(jong-hoon Cho),오광현(kwang-hyun Oh),김태언(tae-un Kim),남문현(moon-hyen Nam) 대한전기학회 1995 대한전기학회 학술대회 논문집 Vol.1995 No.7

호박 중 Buprofezin외 7종의 생산단계 농약 잔류허용기준 설정 연구

문준관 ( Joon-kwan Moon ),황규원 ( Kyu-won Hwang ),김현진 ( Hyen Jin Kim ),선정훈 ( Jeong Hoon Sun ),정경수 ( Kyung Su Jung ),이태현 ( Tae Hyun Lee ) 한국환경농학회 2019 한국환경농학회 학술대회집 Vol.2019 No.-

본 연구는 애호박 중 살충제 6종 (buprofezin, chlorantraniliprole, clothianidin, pyridaben, spinetoram, thiamethoxam) 및 살균제 2종 (carbendazim, metrafenone)의 수확 전 최종 농약 살포일로부터 수확 일까지 농약의 잔류량 감소 추이를 파악하여 약제별 잔류특성을 파악하고, 반감기를 산출함으로써 생산단계 잔류허용기준(PHRL, Pre-Harvest Residue Limit) 설정을 위한 기초자료로서 활용하고자 수행하였다. 위도상 직선거리가 20 km 이상인 시험포장 2곳(포장1; 충남 부여, 포장 2 : 경기도 평택)을 선정하여 농약안전사용기준에 따라 농약을 살포하고 살포 2시간 후를 0일차로 하여 0, 1, 2, 3, 5, 7, 10일차에 수확하여 잔류량의 경시변화를 토대로 생물학적 반감기를 산출하였다. 애호박 중의 약제들은 추출, 액-액 분배, 정제과정을 거친 후 기기분석을 수행하였다. 정량한계는 모두 0.02 mg/kg 이하였으며 정량한계, 정량한계의 10배 수준에서 회수율 시험을 한 결과 회수율은 78.3~115.4%, 변이계수 15% 미만으로 나타났다. 애호박 중 약제별 생물학적 반감기는 시험포장 1과 시험포장 2에서 buprofezin의 경우 4.7일, 4.1일, carbendazim의 경우 4.2일, 3.1일, chlorantraniliprole의 경우 4.9일, 3.7일, clothianidin의 경우 7.1일, 4.8일, metrafenone의 경우 4.1, 4.4일, pyridaben의 경우 3.9일, 2.7일, spinetoram의 경우 2.2, 2.3일, thiamethoxam의 경우 9.1, 6.4일로 각각 나타났다. 수확일의 잔류수준을 최대잔류허용량으로 가정하여 잔류회귀감 소식을 이용, 수확 10일 전까지의 각 약제별 생산단계 잔류허용기준(안)을 제안하였다.

호박 중 살충제 Buprofezin 및 Pyridaben의 생산단계 농약 잔류허용기준 설정 연구

황규원 ( Kyu-won Hwang ),김현진 ( Hyen Jin Kim ),선정훈 ( Jeong Hoon Sun ),정경수 ( Kyung Su Jung ),이태현 ( Tae Hyun Lee ),문준관 ( Joon-kwan Moon ) 한국환경농학회 2019 한국환경농학회 학술대회집 Vol.2019 No.-

본 연구는 애호박 중 살충제 buprofezin 및 pyridaben의 수확 전 최종 농약 살포일로부터 수확 일까지 농약의 잔류량 감소 추이를 파악하여 약제별 잔류특성을 파악하고, 반감기를 산출함으로써 생산단계 잔류허용기준(PHRL, Pre-Harvest Residue Limit) 설정을 위한 기초자료로서 활용하고자 수행하였다. 위도상 직선거리가 20 km 이상인 시험포장 2곳(포장1; 충남 부여, 포장 2 : 경기도 평택)을 선정하여 농약안전사용기준에 따라 농약을 살포하고 살포 2시간 후를 0일차로 하여 0, 1, 2, 3, 5, 7, 10일차에 수확하여 잔류량의 경시변화를 토대로 생물학적 반감기를 산출하였다. 두 시험 농약은 추출, 액-액 분배, 정제과정을 거친 후 HPLC-UVD로 분석하였다. 정량한계는 모두 0.01mg/kg이었으며, 정량한계 및 정량한계의 10배 수준으로 농약을 처리하여 회수율시험을 수행하였다. 회수율은 buprofezin의 경우 91.1~111.6%이었고, pyridaben은 81.3~114.1%이었으며 변이계수는 15% 미만으로 양호하였다. 애호박 중 농약의 잔류소실양상은 단순 1차감쇄반응식에 따라 반감기를 산출하였으며, 시험포장 1과 시험포장 2에서 buprofezin의 반감기는 각각 4.7일, 4.1일로 나타났고, pyridaben의 반감기는 각각 3.9일, 2.7일로 나타났다. 시험농약의 최종 약제 살포 후 0일차 시료 잔류량은 두 약제 모두 잔류허용기준 (0.5 mg/kg) 미만이었으며, 수확일의 잔류수준을 최대잔류허용량으로 가정하여 잔류회귀감소식을 이용, 수확 10일 전까지의 각 약제별 생산단계 잔류 허용기준(안)을 제안하였다. 이를 통해 수확 전 수확 예정일의 잔류량을 예측하여 잔류허용기준의 초과여부를 판정함으로써 농약잔류허용기준을 초과하는 부적합 농산물의 유통을 사전에 차단하여 소비자에게 안전한 먹거리를 제공하는데 기여할 수 있을 것으로 생각된다.

Effects of Production of Ever-bearing Strawberries Using Cool Air from Mushroom Cultivation House

Yun-Kyeoung Jeoung(정윤경),Ju-Hyen Park(박주현),Tae Moon Ha(하태문),Young-Suk Lee(이영석),Myeong-Hoon Seo(서명훈),In-Chul Kim(김인철) (사)한국생물환경조절학회 2019 생물환경조절학회지 Vol.28 No.1

버섯재배사에서 방출되는 CO₂를 함유한 15oC-20℃의 공기를 딸기재배 하우스에 자동적으로 포집하고 전달하는 자동제어 시스템을 개발하였다. 2017년 6월부터 다양한 위치에서 온도변화를 수집한 결과, 고설베드 딸기하우스의 평균온도는 주간과 야간 온도가 각각 33℃ 와26℃인 반면 3단 이동식베드는 26℃ 와 21℃ 수준이 유지되어 있었다. 버섯재배사의 CO₂ 함유 농도는 800-1,600 ppm 수준이었다. 3단 이동식베드에 처리한 딸기의 생육특성중 엽수와 관부직경은 무처리구인 고설베드에 비해 유의성 있는 차이가 있었으며, 고온기 정상과와 기형과의 착과특성 또한 3단이동식베드가 고설베드에 비해 유의성 있게 양호한 상태유지가 되어 과실특성인 과장과 수량이 2배이상 높은 경향을 보였다. 이에, 고온기에 버섯재배사에서 방출되는 시원한 공기 활용으로 딸기의 관부주변과 엽온의 온도가 정상생육 수준으로 유지가 되어 사계성 딸기품종을 국내에서도 재배할 수 있는 가능성을 확인하였다. We designed a system that can automatically collect, convey, and control cool air of 15℃-20℃ containing carbon dioxide from a mushroom cultivation house to a strawberry plastic house. We recorded the temperature at various positions from July to August 2017. The average temperature of the green house during day and at night was maintained at 33℃ and 26℃, respectively. In the moveable three-tier cylindrical bed, the average temperature around root was maintained at 26℃ and 21℃ during day and at night, respectively. On the high-bench in the green house, the temperature was maintained at 32℃ and 30℃ during day and at night, respectively. The carbon dioxide concentration was maintained around 800-1,600 ppm in the mushroom cultivation system and 400-800 ppm in the strawberry plastic house. The growth characteristics of the strawberry treated with moveable three-tier cylindrical bed were significantly different from those of the untreated high-bench bed. In addition, during the summer season, moveable three-tier cylindrical bed showed more tendency to increase in normal fruit number (NFN) and to decrease in defective fruit number (DFN) compare to the high-bench bed. Therefore, the moveable three-tier cylindrical bed showed a tendency to be more than 2 times higher yields than that of the high-bench bed. It was confirmed that everbearing strawberry cultivars could be cultivated in green house due to the cool air supply from the mushroom cultivation system in the summer season.

Assessment of Inorganic Chemicals in Groundwater in Rural Provinces of Korea

( Jong Yeon Hwang ),( Sunhwa Park ),( Moon-su Kim ),( Hun-je Jo ),( Gyong-mi Lee ),( Sang Ho Jeon ),( Da Hee Song ),( Deok-hyun Kim ),( Tae-seung Kim ),( Hyen Mi Chung ),( Hyun-koo Kim ) 한국환경분석학회 2017 환경분석과 독성보건 Vol.20 No.2

In this study, we focused on the evaluation, comparison of the physiochemical characteristics, and distribution of cations and anions in groundwater sampled in rural areas of Korea. The on-site measurements of pH, EC, DO, and ORP (average, minimum, and maximum) respectively ranged as follows: 5.7~8.7, 49~1,224 μS/cm, 0.5~11.8 mg/L, and -53.0~697 mV. The assessments of water quality for agricultural usages were evaluated using SAR, sodium (%), RSC, PI, SSP, MH, PS, and Kelly`s ratio (KR) and were classified as SAR [Excellent (100%)], Sodium [Excellent (2.1%), Good (51.1%), Permissible (39.3%), Doubtful (6.2%), Unsuitable (0.7%)], RSC [Good (100%)], PI [Excellent (100%)], SSP [Excellent (0.7%), Good (37.2%), Fair (61.4%), Poor (0.7%)], MH [Acceptable (96.6%), Non-Acceptable (3.4%)], KR [Permissible (69.7%), (Non-Permissible (30.3%)], and PS [Excellent to Good (100%)]. In addition, classifications of groundwater based on the Piper diagram showed that the groundwater was grouped into the Ca²⁺-(Cl^--NO₃^-) and Ca²⁺-HCO₃^- types, which are general features of groundwater in Korea. Moreover, the tracking of dominance types (classified as evaporation, rock, and precipitation) based on the Gibbs diagram showed that the origins of anions and cations in the groundwater are of rock dominance.

Shell Mapper Implementation of V. 34 Using a Table Method

Young Hoon Ko,Suk Hyon Yoon,Tae Hyen Moon,Chang Eon Kang 대한전자공학회 1996 ITC-CSCC :International Technical Conference on Ci Vol.- No.-

Applications of Hydrochemical Models for the Assessment of Groundwater

( Jong Yeon Hwang ),( Sunhwa Park ),( Moon-su Kim ),( Hun-je Jo ),( Gyeong-mi Lee ),( In Kyu Shin ),( Sang Ho Jeon ),( Da Hee Song ),( Deok-hyun Kim ),( Tae-seung Kim ),( Hyen Mi Chung ),( Hyun-koo Ki 한국환경분석학회 2017 환경분석과 독성보건 Vol.20 No.3

In this study, we focused on the evaluation and comparison of the physico-chemical characteristics and distribution of cations and anions in groundwater sampled from 2015 (485 samples) to 2016 (145 samples) in rural provinces of Korea. The major objectives of this study were as follows: 1) quality assessment of groundwater for special usage, such as agricultural or industrial applications; 2) the determination of groundwater types; and 3) the tracing of ion sources in groundwater. The assessment of the groundwater qualities from 2015 (n=480 samples) to 2016 (n=145 samples)) for agricultural usages were conducted using SAR (Sodium Adsorption Ratio), Na(%), RSC (Residual Sodium Carbonate), PI (Permeability Index), SSP (Soluble Sodium Percent), MH (Magnesium Hazard), KR (Kelly’s Ratio) and PS (Potential soil Salinity). Furthermore, the results of samples in 2015 were classified as SAR [Excellent (100%)], Sodium [(Excellent (34%), Good (55%), Permissible (9%), Doubtful (1.6%), Unsuitable (0.4%)], RSC [(Good (95.7%), Medium (3.5%), Bad (0.8%)], PI [(Excellent (40.6%), Good (59%), Unsuitable (0.4%)], SSP [(Excellent (26.3%), Good (59.8%), Fair (13.1%), Poor (0.8%)], MH [(Acceptable (94.4%), Non-Acceptable (5.6%)], and Kelly’s Ratio [(Permissible (93%), Non-Permissible (7%)], PS [(Excellent to Good (98%), Good to Injurious (1.2%), and Injurious to Unsatisfactory (0.2%)]. In addition, the groundwater sampled in 2016 was classified as SAR [Excellent (100%)], Sodium [Excellent (2.1%), Good (51.1%), Permissible (39.3%), Doubtful (6.2%), Unsuitable (0.7%)], RSC [Good (100%)], PI [Excellent (100%)], SSP [Excellent (0.7%), Good (37.2%), Fair (61.4%), Poor (0.7%)], MH [Acceptable (96.6%), Non- Acceptable (3.4%)], KR [Permissible (69.7%), (Non-Permissible (30.3%)], and PS [Excellent to Good (100%)]. Evaluations based on the Wilcox diagram were classified as “excellent to good” or “good to permissible” and the water quality evaluated using the U.S. Salinity Laboratory’s Diagram was classified as C1S1 (Excellent/ Excellent) and C2S1 (Good/Excellent) for all samples from 2015 to 2016. Moreover, in the application of two factors of the Langelier Saturation Index (LSI) and Corrosive ratio (CR), we obtained similar results for defining the suitability of groundwater for industrial purposes.

Concentrations and Distributions of 5 Metals in Groundwater Based on Geological Features in South Korea

Sang-Ho Jeon,Sunhwa Park,Da-Hee Song,Jong-yeon Hwang,Moon-su Kim,Hun-Je Jo,Deok-hyun Kim,Gyeong-Mi Lee,Ki-In Kim,Hye-Jin Kim,Tae-Seung Kim,Hyen-Mi Chung,Hyun-Koo Kim 한국토양비료학회 2017 한국토양비료학회지 Vol.50 No.5

To establish new metal groundwater standard, 5 metals such as aluminum, chromium, iron, manganese, and selenium were evaluated by Chemical Ranking Of groundWater pollutaNts (CROWN) including possibility of exposure, toxicity, interest factor, connection standard for other media, and data reliability. 430 groundwater samples in 2013 and 2014 were collected semiannually from 110 groundwater wells and they were analyzed for selenium, manganese, iron, chromium, and aluminum. For this study, 430 groundwater samples were categorized into 3 geological distribution features, such as igneous, metamorphic, and sedimentary rock region and geological background levels were divided by pre-selection methods. For the results, the average concentrations of aluminum, chromium, iron, manganese, and selenium in 430 groundwater samples were 0.0008 mg L<SUP>-1</SUP>, 0.0001 mg L<SUP>-1</SUP>, 0.174 mg L<SUP>-1</SUP>, 0.083 mg L<SUP>-1</SUP>, and 0.0004 mg L<SUP>-1</SUP><SUP></SUP>, respectively. In addition, among various geologies, average concentration of selenium was the highest in igneous rock region, average concentrations of chromium, manganese and aluminum were the greatest in sedimentary rock region, and average concentration of iron was the most high in metamorphic rock region. As a result of the geological background concentration with pre-selection method, background concentrations of selenium and aluminum in groundwater samples were the highest from sedimentary rock as 0.0010 mg L<SUP>-1</SUP> and 0.0029 mg L<SUP>-1</SUP> and background concentrations of manganese and iron in groundwater samples were the greatest from metamorphic rock as 0.460 mg L<SUP>-1</SUP> and 1.574 mg L<SUP>-1</SUP>, and no chromium background concentration in groundwater samples was found from all geology.