• 한국전자통신학회논문지
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• 제16권4호
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• pp.725-734
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• 2021

타이어 사고를 방지하기 위해 앱 인벤터와 블루투스 통신을 이용한 타이어 안전을 확인할 수 있는 애플리케이션을 개발하였다. 온도 센서로 외부 온도를 측정하여 계절의 변화를 알고 압력센서로 타이어의 공기압을 측정하여 외부 온도에 맞는 공기압을 알려주며 레이저 센서의 거리를 50mm이상과 각도를 45°로 해야 최적화된 타이어의 마모도를 측정할 수 있었다. 마모도 측정된 수치에 따라 타이어의 상태를 판단하여 앱 인벤터를 사용하여 블루투스 모듈을 통해 연동한 후 사용자의 핸드폰으로 타이어의 상태와 예상교체를 알 수 안전을 확인할 수 있는 애플리케이션을 개발하였다.

• Journal of Biosystems Engineering
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• 제22권2호
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• pp.127-136
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• 1997

This study was accomplished to develop a pneumatic granular applicator that can be attached to the conventional ride-on rice transplanter. Operating conditions of a metering device for the applicator were determined so as to obtain the required discharge rate of granules for field application. The shape and size of diffuser was selected for the applicator and the spacing between diffusers on a boom and the boom height were determined as an optimal application condition for uniform distribution. The diffuser spacing of 1m for the fertilizer and the diffuser spacing of 0.8m for the pesticide at the boom height over 0.8m were acceptable.

• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2010년도 제34회 춘계학술대회논문집
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• pp.295-299
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• 2010

항공기 추진시스템에 있어 내구성과 신뢰성을 향상과 운용비용 절감을 위한 상태감시 및 진단 시스템의 개발 및 적용이 일반화되고 있다. 특히 40,000ft 이상의 고고도에서 장시간 운용되는 무인항공기를 신뢰성 있게 운용하기 위해서는 열악한 환경에서 작동되는 추진시스템의 손상이나 성능저하에 대한 사전 대처를 위한 상태감시 시스템이 필수적으로 요구된다. 이에 본 연구에서는 MATLAB/SIMULINK를 이용하여 온라인 상태감시 프로그램을 제안하였다. 입력 모듈에서 현 개발단계에서는 실제 엔진 계측신호가 유용하지 않아 이를 모사하였다. 제안된 온라인 상태감시 모니터링 프로그램은 적용 가능성을 확인하기 위해 실제 터보프롭 엔진에 적용하였다.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2001년도 봄 학술발표회 논문집
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• pp.979-984
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• 2001

Poor water-proofing integrity is related to many factors : site procedure, workmanship, weather. substrate conditions, installation(including asphalt application) conditions. The evaluation of adhesive properties tested by concrete surface moisture and asphalt application was based on laboratory test and observations. This report describes the pull-off test results of waterproofing systems currently used for installing and reparing for concrete bridge decks. The test results showed that the moisture condition fully affected the adhesive properties of sheet membranes and sealer but partially for liquid membranes.

• 화약ㆍ발파
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• 제15권2호
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• pp.53-72
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• 1997

It is impossible to precat the behavior of ground soil and structure accurately during underground construction in urban area or excavation in soft ground area because of difference between the assumed design condition and the actual site condition. Therefore, it must be managed by measuring system and correct the difference by real data. Large scale under ground construction in urban area like a seoul subway project has needed for Intelligent Construction technique, a field of the Engineering Contractor. The automated measuring system is developed for the technique. It is described that the procedure and the method of measuring work with application of the automated measuring system.

• 한국작물학회:학술대회논문집
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• 한국작물학회 1994년도 추계 학술대회지
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• pp.64-65
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• 1994

• 한국토양비료학회지
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• 제19권3호
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• pp.245-249
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• 1986

담수상태(湛水狀態)와 밭상태(狀態)의 토양조건(土壤條件)에 볏짚과 규산질비료(珪酸質肥料)를 시용시기별(施用時期別)로 처리(處理)한 후(後) 토양(土壤)에 이몰(理沒)하였다가 질내(窒內)에 채취(採取)하여 담수항온(湛水恒溫)하면서 탈질량(脫窒量)을 조사(調査)한 결과(結果)는 다음과 같다. 1. 볏짚과 규산질비료(珪酸質肥料)의 병용시 탈질량(脫窒量)은 항시담수구(恒時湛水區)보다 밭상태(狀態)로 유지(維持)하다 담수처리(湛水處理)한 구(區)에서 현저(顯著)히 증가(增加)되었다. 2. 볏짚 및 규산질비료(珪酸質肥料)의 시용시기별(施用時期別) 탈질량(脫窒量)은 이앙(移秧) 2주전(週前) 시용구(施用區)가 조춘(早春) 및 가을 시용구(施用區)보다 현저(顯著)한 증가량(增加量)을 보였다. 3. 질소(窒素) 1 mole 탈질(脫窒)시키는데 소요(消要)되는 탄소량(炭素量)은 항시담수구(恒時湛水區)가 밭상태(狀態)의 토양(土壤)보다 많았으며 볏짚과 규산질비료시용(珪酸質肥料施用)은 탄소(炭素)의 소모량(消耗量)은 감소(減少)시켰다. 4. 항온기간중(恒溫期間中) 무기태질소생성량(無機態窒素生成量) 및 초산화성율(硝酸化成率)은 항시담수구(恒時湛水區)보다 밭상태(狀態)의 토양(土壤)에서 현저(顯著)한 증가(增加)를 보였다.

• 대한한의학원전학회지
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• 제21권3호
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• pp.119-125
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• 2008

Among the various pulse diagnosis contents in "Hwangjenaegyeong(黃帝內經)", we researched the pulse conditions that are belonged to Sameumsamyang(三陰三陽), and made a comparative study with pulse conditions of five organs[五臟], that of six meridians in "Sanghallon(傷寒論)". So from now on, this study would make help to understand standard pulse condition of Sameumsamyang(三陰三陽) diseases for clinical application. In "Hwangjenaegyeong(黃帝內經)", pulse condition of Taeyang(太陽) is expressed to be floating, Yangmyeong(陽明)'s condition to be strong but with a little bit weakness, Soyang(少陽)'s condition to be intermediate between Eum(陰) and Yang(陽), Taeeum(太陰)'s condition to be low and soft, So-eum(少陰)'s condition to be low and weak with some occasional upward tendency, Gweoleum(厥陰)'s condition to be mixed state of Eum and Yang.

• 열처리공학회지
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• 제13권1호
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• pp.10-15
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• 2000

Evaluation of long term stability of the Brinell standard hardness tester was carried out to secure its application as a national standard in Brinell hardness. Accuracy and repeatability in load application were tested through evaluating errors in hardness measurement of certified reference blocks. All of those requirements in KS as well as ISO specifications were satisfied by this standard hardness tester. In addition to this, long term stability test of automatic indentation measurement system was carried out. The scattering range was almost the same with its error range. To figure out an optimum test condition for better repeatability and long term stability, the effect of load variation, load application speed and time have been studied using orthogonal array experimental plan. It was found that the best combination is $30{\mu}m/s$ of load application speed and 25 seconds of load application time.

• 한국연초학회지
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• 제22권1호
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• pp.61-70
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• 2000

This study was carried out to improve the tobacco field condition and to determine the effect of lime amount and application time on soil pH, yield, and quality of leaf tobacco. Lime was applied to the tobacco field by determined amounts according to different pH level. The changes of soil pH, growth of tobacco, yield, and quality of KF109 and Br21 tobacco were surveyed by time lapse. The target pH value in tobacco field soil can be reached at 6 weeks after lime application, and then the soil pH was lowered slightly after that time. The lime amount needed to reach target pH was decreased 40 % in the same tobacco field after 1 year. Though the initial growth rate of flue-cured tobacco in the field of pH 7.0 was lower than that of conventional tobacco field, the field of pH 7.0 showed the highest yield after the maximum growth stage. The quality of cured leaf tobacco in the field of pH 7.0 applied lime at spring season was slightly lowered compared with that in conventional. This results indicated that the best pH condition in tobacco field for the best tobacco growth was 6.5 and the proper time of lime application was fall season of previous year by application of the whole quantity.