• 한국환경과학회지
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• 제28권1호
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• pp.137-145
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• 2019

The purpose of this study was to evaluate the effect of implementing a Liquid Manure Circulation System (LMCS) on the environmental improvement of swine farms. Bacterial counts at different circulation phases of the LMCS were measured. Air in the swine facility and the liquid manure in each step of LMCS were sampled and gaseous composition detected in swine farms both with and without LMCS to compare the environmental conditions in either case. There were no differences in the total bacteria count at any circulation phase in the LMCS. Escherichia coli were detected at a very low abundance only at the outlet of the slurry pit ($1.5{\times}10^2CFU/m{\ell}$). Salmonella were not detected at any phase. The LMCS clearly affected the odor strength of the swine farm and improved the air quality in the swine facility. On-site odor strength - inside, at the exhaust, and at the border of the swine facility - were clearly lowered in farms applying LMCS. Furthermore, the levels of ammonia, hydrogen sulfide, and carbon dioxide were improved in swine facilities applying LMCS.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2002년도 추계학술대회 논문집
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• pp.198-201
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• 2002

An internal finishing process by the application of magnetic abrasive machining has been developed as a new technology to obtain a fine inner surface of pipe. In this paper, a slurry circulation system was designed and manufactured. Its finishing characteristics was experimently investigated by various effective factors such as dry, water flow, oil flow with a slurry. From the experimental results, it was found that the materal removal and surface roughness were good in oil flow with slurry. The slurry circulation system is effective on the internal finishing of non-ferromagnetic pipe(SUS304).

• 대한기계학회:학술대회논문집
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• 대한기계학회 2002년도 학술대회지
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• pp.713-716
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• 2002

Aging effect on the cardiovascular circulation is simulated by lumped parameter model. Aging phenomena can be hemodynamically explained as (1) the increase of flow resistance induced by remodeling of artery vessels and increased viscosity of blood and (2) the reduction of the vessel capacitance caused by arteriosclerosis. Appropriate physiological parameters are evaluated from the clinical data of adults and old men. Simulation results well explain the hypertension with aging of cardiovascular system.

• 정보관리연구
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• 제23권2호
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• pp.73-89
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• 1992

산업기술정보원(産業技術情報院)은 산업(産業) 및 과학기술 분야의 도서, 연속간행물(連續刊行物), 해외공관자료, 특허 등의 다양한 정보자료(情報資料)를 수집하고 있다. 본 논문은 산업기술정보원(産業技術情報院)에서 자체 개발(開發)한 자료관리시스템의 구성과 운영에 관하여 기술하였다. 본 시스템은 IBM 3090/150 E를 이용하여 개발(開發)되었으며, 수서, 목록, 검색, 대출, 연속간행물(連續刊行物) 관리의 하부 시스템으로 구성(構成)된다.

• 정보관리연구
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• 제23권3호
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• pp.74-94
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• 1992

본(本) 논문(論文)은 산업기술정보원(産業技術情報院)에서 자체 개발(開發)한 도서관리(圖書管理) 시스템인 KINITI-LIS의 구성(構成) 및 파일 구조(構造)에 관하여 기술하였다. 본(本) 시스템은 수서(收書), 목록(目錄), 검색(檢索), 대출(貸出), 연속간행물관리(連續刊行物管理) 등 5개 서브시스템으로 구성(構成)되었으며, 대부분의 파일들은 VSAM을 기본으로 구축(構築)하였다.

• 한국해양공학회:학술대회논문집
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• 한국해양공학회 2006년 창립20주년기념 정기학술대회 및 국제워크샵
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• pp.431-434
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• 2006

This study reviews the properties of coastal ocean and Seomjin River estuary spaces then define some MGIS(Marine Geographic Information System) related terminologies for clarifying the scope of MGIS boundaries. Therefore, we show the three-dimensional circulation of MGIS-based Seomjin River Estuary integrating three-dimensional POM model and observed data.

• 한국환경과학회지
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• 제32권5호
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• pp.375-384
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• 2023

Climate data were obtained over an eight-year period (July 2013 to June 2021) using an automatic weather observation system (AWS) installed at the foot of Mt. Geumo in Chilgok, Gyeongbuk. Using climate data, the statistical and meteorological characteristics of the local circulation between the Nakdong River and Mt. Geumo were analyzed. This study is based on automatic weather observation system data for Dongyeong, along with comparative climate data from the Korea Meteorological Administration (Chilgok) and the Gumi meteorological observatory. Over the eight- years, mountain and valley winds have occurred 48 times a year on average, with the highest occurring in May and the weakest winds in June and December. When mountain winds occurred, the temperature in the nearby lowland region more strongly decreased than when valley winds blew. However, the potential to use mountain winds to improve urban thermal environments is limited because mountain winds occur infrequently in summer when a drop in nighttime temperature is required.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 1999년도 춘계학술발표대회 논문집
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• pp.31-36
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• 1999

The concept of Customer Circulation of department stores is translated into one of the most critical factors in their survival strategy, that is the strategy of service-differentiation and efficiency- maximization of shopping floors' unit area. Considering that the Customer Circulation affects the attractiveness of a department store and ultimately the number of shoppers, misunderstanding of it merely as one of the interior factors is highly likely to lead to lowered utility of each shopping floor. In this respect, the objective of this paper lies in identifying and analysing unique features of shoppers' spacial behaviors and eventually in proposing more efficient drawing of the Customer Circulation.

• 한국원자력학회:학술대회논문집
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• 한국원자력학회 1997년도 춘계학술발표회논문집(1)
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• pp.514-519
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• 1997

The MRX is an integral type ship reactor with 100 MWt power, which is designed by Japan Atomic Energy Research Institute. It is characterized by integral type PWR, in-vessel type control roe drive mechanism, water-filled containment vessel and passive decay heat removal system. Marine reactor should have high passive safety. Therefore, in this study, we simulated the loss of flow accident to verify the passive decay heat removal by natural circulation using RETRAN-03 code. auxiliary feed water systems are used for decay heat removal mechanism and results are compared with the loss of flow accident analysis using emergency decay heat removal system by JAERI. Results are very similar to case of EDRS 1 loop operation in JAERI analysis and decay heat is successfully removed by natural circulation.

• 대기
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• 제26권4호
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• pp.711-716
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• 2016

The dynamical model forecasts using state-of-art general circulation models (GCMs) have some limitations to simulate the real climate system since they do not depend on the past history. One of the alternative methods to correct model errors is to use the canonical correlation analysis (CCA) correction method. CCA forecasts at the present time show better skill than dynamical model forecasts especially over the midlatitudes. Model outputs are adjusted based on the CCA modes between the model forecasts and the observations. This study builds a canonical correlation prediction model for subseasonal (June) precipitation. The predictors are circulation fields over western North Pacific from the Global Seasonal Forecasting System version 5 (GloSea5) and observed snow cover extent over Eurasia continent from Climate Data Record (CDR). The former is based on simultaneous teleconnection between the western North Pacific and the East Asia, and the latter on lagged teleconnection between the Eurasia continent and the East Asia. In addition, we suggest a technique for improving forecast skill by applying the ensemble canonical correlation (ECC) to individual canonical correlation predictions.