한국에 있어서 미곡(米穀)의 건조(乾燥) 및 저장(貯藏)을 위한 시스템의 모델 개발 및 적정규모 선정에 관한 연구(I) -모델 시스템의 Layout 및 설계-

박경규,Park, Kyung-Kyoo 한국농업기계학회 1986 바이오시스템공학 Vol.11 No.2

In order to improve the traditional post harvest system in Korea, a model for mechanized grain drying and storage facilities was developed. Also, a computer program for the model system was developed. For the study, flat type steel bin and circulation type dryer were selected for the model and Fortran language was used for the computer program. This program was tested by using various practical data. The following results were obtained from the study: 1. The general model developed can be used for designing a rough rice drying and storage facility within the range from 100 ton to 1000 ton capacity. 2. Major output of the computer program for designing a model system were as follow; a. The dimension of the plant. b. The storage bin size, dryer number and dryer size. c. The dimension of individual equipment and its required HP. d. Capital requirement and operating cost of the model system.

기술변화에 따른 인사관리

박경규,Park, Gyeong-Gyu 한국레미콘공업협회 1985 레미콘 Vol.9 No.-

Operaton Cost Model for Feed Production

박경규,정도섭,찰스 디요,Park, Kyung Kyoo,Chung, Do Sup,Charles, Deyoe 한국농업기계학회 1985 바이오시스템공학 Vol.10 No.1

배합사료생산(配合飼料生産)에 소요(所要)되는 운전비용(運轉費用)을 추정(推定)하기 위(爲)하여 소요(所要)에너지, 소요노동력(所要努動力), 유지(維持) 및 수리비(修理費)를 분석(分析)하여 공장규모(工場規模) 및 사료생산종류(飼料生産種類)에 따른 수학적모형을 개발(開發)하였다. 에너지비용(費用)은 전기비용(電氣費用)과 연료비용(燃料費用)으로 구분(區分)하였으며 소요노동력(所要努動力)은 생산노동력(生産努動力), 관리자노동력(管理者努動力) 그리고 유지(維持) 및 수리노동력(修理努動力)으로 구분(區分)하였다. For the purpose of estimating the operating cost for feed production, energy consumption, labor requirement, maintenance cost, and supplies and miscellaneous costs are analyzed and developed as mathematical models. Mathematical model for energy usage Consists of electrical energy, boiler fuel energy and vehicle fuel energy. The mathematil model for electrical energy usage for the swine and poultry feed mill and the complete pelleted feed mill are developed, based on the general model mill and the computer program for its design developed in Kansas State University (Park, 1982). Also, the boiler fuel energy consumption model and the vehicle fuel energy consumption model are developed by analyzing the boiler system and the vehicle operation in the warehouse. In order to develop a mathematical model for labor requirement, the data that Vosloh (1968, 1976) constructed for labor requirement in his model mill are used by assuming that his model mill is similar to this model, in terms of labor assignment standards. Maintenance and repair costs are obtained by assuming to be 5.5% of the total capital investment cost. Also, supplies and miscellaneous costs are estimated by using Vosloh's report and it is approximately 0.87 dollars per ton based on daily production.

섬바디의 건조에 관한 연구

박경규,정창주 ( Kyung Kyu Park,Chang Joo Chung ) 한국농업기계학회 1976 바이오시스템공학 Vol.1 No.1

사료공장 설치를 위한 소요자본 추정 모형

박경규,정도섭 ( Kyung Kyu Park,Do Sup Chung ) 한국농업기계학회 1984 바이오시스템공학 Vol.9 No.1

配合飼料工場의 生産規模 및 生産飼料種類別 所要 投資 資本을 推定할 수 있는 모델을 開發하였다. 켄사스 주립대학교(Park, 1982)에서 開發된 配合飼料工場의 設計라 모델을 利用하여 機械 및 備品값, 設置費用, 建築費用, 電氣器具 및 電氣施設費 등을 關聯業休의 도움을 얻어 分析하였으며, 모델에 適用된 工場의 規模는 10ton/hr에서 40ton/hr, 이고, 工場對象은 養豚 및 養鷄用 飼料工場(1일 8시간 作業, 1일 16시간 作業)과 孔牛用 펠릿 飼料工場(1 일 8시간 作業) 이었다. N/A

가로림만 표층 퇴적물 내 미량금속 분포 특성

박경규,최만식,조동진,장동준,박소정,PARK, KYOUNGKYU,CHOI, MANSIK,JOE, DONGJIN,JANG, DONGJUN,PARK, SOJUNG 한국해양학회 2020 바다 Vol.25 No.2

가로림만 퇴적물에서 미량금속의 인위적인 영향을 평가하기 위하여 2010년과 2015년 총 77개의 표층 퇴적물 시료를 채취하여 물리적 특성 요소(입도 및 비표면적)와 지화학적 요소(주성분(Al, Ca, Fe, K, Ba) 및 미량금속(Mn, Cs, Cr, Co, Ni, Cu, Zn, Pb), 유기탄소 및 탄산칼슘)들을 분석하였다. 가로림만 표층 퇴적물의 평균 입도는 0.51-5.58 Ø(평균 3.98 Ø) 범위였으며 외만에서부터 내만으로 증가하였고, 수로에서 육지 방향으로 증가하였다. 일부 원소를 제외한 대부분의 금속 농도는 입자의 크기가 작아지고 비표면적이 증가함에 따라 증가하였다. 미량금속의 농도를 조절하는 요인을 추정하기 위하여 요인분석(factor analysis)을 실시하여, 총 3개의 요인을 추출(총 변이의 92.7%) 하였다. 요인 1은 총 변이의 71.3%를 설명하였는데 입도 요인이었고, 요인 2는 총 변이의 14.2%를, 요인 3에서는 총 변이의 7.2%를 설명하였다. 배경농도를 이용하여 농축인자를 계산하였다. 농축인자가 1.5 이상인 금속과 그 시료 수는 Cr 4개(정점 1, 16, 27, 39)와 Pb 1개(정점 39)였으나 이 들 금속에 대한 용출 금속 농도에서는 타 시료와 차이가 없었다. 가로림만의 총 금속 농도에 대한 1M HCl 용출 금속 농도의 백분율은 Pb~Co>Cu>Zn~Mn>Ni>Cr 순서로 감소하였으며 Pb은 입도에 따른 변화를 보였으나 다른 금속들은 모래를 제외하면 매우 일정한 값을 보였다. 이 값을 오염된 지역 및 청정 해역과 비교하면 모든 지역에서 Cu, Zn 및 Pb의 농도 수준과 관련없이 금속별 백분율이 유사하였다. 이는 1M HCl 용액과 퇴적물 구성 성분 사이의 반응 여부에 따른 결과라고 판단되고, 농축 정도를 판단하는데 이 용출 비율을 사용하는 것은 한계가 있음을 나타낸다. In 2010 and 2015, total 77 surface sediment samples were collected to assess the anthropogenic effects of trace metals in surface sediments of Garolim Bay, and the physical characteristics (particle size and specific surface area) and geochemical components (major (Al, Ca, Fe, K, Ba) and trace metals (Mn, Cs, Cr, Co, Ni, Cu, Zn, Pb), organic carbon and calcium carbonate) were analyzed. Mean grain size of Garolim Bay surface sediments ranged from 0.51-5.58 Ø (mean 3.98 Ø) and increased from the inlet of bay to the inner bay, and from the waterway to the land. Most of the metal concentrations except for some elements showed the similar distribution to those of mean grain size and specific surface area. As the particle size decreased and the specific surface area increased, the metal concentration increased. In order to estimate the factors controlling the concentration of trace metals, factor analysis was performed, and three factors were extracted (92.7% of the total variation). Factor 1 accounted for 71.3% of the total variation, which was a grain size factor. Factor 2 accounted for 14.2% of the total variation, Factor 3 accounted for 7.2% of the total variance. Enrichment factor was calculated using the particle size corrected background concentration. Metals with a enrichment factor of 1.5 or higher and the number of samples were 4 for Cr (St. 1, 16, 27, 39) and 1 for Pb (St. 39), but there were little differences in the concentrations of 1M HCl leached metals for these metals. The percentage of 1M HCl leached fraction to total metal concentration decreased in the order of Pb~Co>Cu>Zn~Mn>Ni>Cr. Comparing this value with contaminated and clean sediments in other coastal areas, the percentages for each metal were similar regardless of the trace metal levels in all regions. This fact might be resulted from the reaction between the 1M HCl solution and the different sediment constituents, indicating that there is a limit to apply this percentage of leached metal to the estimation of the contamination extent.

배합사료 공장의 최적 시스템 설계

박경규,정도섭,키스 벤키,칭라이 황 ( K . K . Park,D . S . Chung,K . Behnke,C . L . Hwang ) 한국농업기계학회 1985 바이오시스템공학 Vol.10 No.2

朴(1982, 1983, 1984 및 1985)이 開發한 配合飼料工場의 投資費用의 數學的模型을 利用하여, 配合飼料工場 適正 시스템의 設計를 例를 들어 소개하였다. 適正시스템의 設計를 爲하여 非線型 프로그램의 Single Objective Programming Problem(單一目的函數)와 Multiple Objective Decision Making Method(多目的函數)의 2가지 方法을 適用하였다. Sing]e Objective Programming Problem에서는 Generalized Reduced Gradient(GRG) Method를 利用하였고, Multiple Objective Decision Making Method(MODM)에서는 Interactive Nonlinear Goal Program(INGP)를 利用하였으며, 그 結果는 다음의 몇가직 要約할 수 있다. 1. 朴이 開發한 數學的 模型들은 2가지 方法 모두 飼料工場의 最適化 設計에 效果的으로 利用할 수가 있었다. 2. MODM方法에 依하여 얻어진 最適 시스템은 Multiple Objective Program Problem에서 求한 結果보다 均衡이 있는 시스템이었으며, 將來의 飼料原料, 飼料購買市場, 기타 다른 條件들으 변화에 對해서 보다 强力이 있는 시스템으로 나타났다. 3. 엄밀한 意味에서 絶對的인 最適飼料工場이란 있을 수 없으며, 주위의 條件, 原料價格, 飼料價格, 工場主의 취향 및 設計條件等에 따라 最適 시스템은 各各 다르게 나타난다. N/A

우리나라의 낙농단지규모에 알맞는 사료가공시설의 모델개발 (Ⅰ) - TMR 터미널의 모델 개발 -

박경규,김태욱 ( K . K . Park,T . W . Kim ) 한국농업기계학회 1994 바이오시스템공학 Vol.19 No.4

트랙트 견인형 TMR 배합기의 개발(II) -TMR 배합기의 수정 개발 및 성능시험-

박경규,구영모,김혁주,서상훈,장철,나규동,홍동혁,이종순,Park, K. K.,Koo, Y. M.,Kim, H. J.,Seo, S. H.,Jang, C.,Nah, K. D.,Hong, D. H.,Lee, J. S. 한국농업기계학회 2000 바이오시스템공학 Vol.25 No.4

A tractor attached TMR(model 430) mixer has been developed in a previous study. However, the mixer was found to be improved through field applications in its capacity, manufacturing cost, ergonomic design and power-train requirement. The TMR mixer was modified into a model TMR500, approved by Institute of Agricultural Mechanization, as follows : 1. Roughage cutting system was seperated from the mixer, resulting in the 33% reduction of manufacturing cost. 2. Enlarged hopper capacity enabled to feed 60 heads at a batch. 3. Hydraulically controlled gate system saved ergonomic man power. 4. Power transmission system was changed from a chain-sprocket system(27:1) to the gear-train reduction system(38.6:1) to satisfy the recommended use of 540rpm PTO input.

한국(韓國)에 있어서 미곡(米穀)의 건조(乾燥) 및 저장(貯藏)을 위한 시스템의 모델 개발(開發)과 적정규모(適正規模) 선정(選定)에 관(關)한 연구(硏究)(II) -모델 시스템의 이용비용(利用費用) 분석(分析) 및 적정규모(適正規模) 산정(算定)-

박경규,윤홍선,김재열,Park, K.K.,Yoon, H.S.,Kim, J.Y. 한국농업기계학회 1987 바이오시스템공학 Vol.12 No.1

In order to improve the traditional post harvest system in Korea, a model for mechanized rice drying and storage system was developed and introduced as the first part of the study(Park, 1986). As the second part of the study, capital requirement and cost of the model system was analyzed. Also, optimum size of the model system was estimated by comparing with the traditional harvest system. From the study, the following results can be concluded: 1. The capital requirement of the model system decreases as the model size increases. For example, a model system having 500 ton storage capacity requires 439,000 Won/ton. However it requires 313,200 Won/ton only, if the model size increases to 1000 ton. 2. Also, total cost of the model system decreases as the model size increases. For example, total costs of the model system having 500 ton and 1000 ton storage capacity are 101,208 Won/ton and 69,320 Won/ton, respectively. 3. The breakeven point (optimum size) of the model can be estimated around 630 ton storage capacity if the operation rate is assumed as 100%. However, the optimum size of the model is 710 ton, if the operation rate it assumed 80%.