• 한국융합학회논문지
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• 제10권12호
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• pp.251-255
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• 2019

QR 코드는 스티커 형태로 인쇄되어 설치비용이 저가로 위치 인식하기 위한 천장이나 벽면에 인공지표를 붙이는 위치 인식 방식과 비전으로 위치 인식을 하는 방식에 비교하여 위치 인식 정확도 면이나 설치비용 면에서 많은 장점을 보유하고 있어 모든 산업에 전반적으로 적용 가능한 로봇을 만든다. 본 연구에서는 정사각형 2차원 바코드를 통해 오차범위는 3 mm 이내 로봇에 적용하는 기술로 정확도가 뛰어나 정확한 위치제어가 가능한 로봇을 만들 수 있음을 보여주며, 특히 여러 공학 기술이 합쳐진 융합연구는 QR 코드 인식 실내이동 로봇제어 연구의 시스템 구성을 중심으로 기술한 것이다.

• 한국유기농업학회지
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• 제4권1호
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• pp.45-58
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• 1995

This paper studied production characteristics of organic farming products and analyzed management income and production cost of organic farming(rice). In order to analyze these points actually, this study was focused on pruduction activities of a producers' organization, Pulmoo Cooperatives in Hong-Dong Myun, Hong-Seong Region, Chung Nam Province. So the following results were obtained : In 1994, output level and an income rate of rice per unit area(10a) which was produced in organic farming method(O.F.M) was higher than those of general farming method(G.F.M) as about 5%, 7.4%. And management income size of the former was 1.8 times as large as that of the latter. But rice production cost of O.F.M was 1.93 times as much as that of G.F.M, particularily in labor cost and farming equipment cost, light and heat expenses, many other material costs. For the progress of organic farming O.F.M and equipmets should be developed much more, for example, the technics of prevetion against damages by blight and harmful insects and improvement of varieties, natural pesticides, agricultual application of microorganisim, construction of compost heat factory, etc. Since these technics and establishments have taken on the public goods, the development of those should be supported by government.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2000년도 봄 학술발표회 논문집
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• pp.458-463
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• 2000

Recently, there are increasing much concerns about repair and rehabilitation works for aged Concrete Structures which had been constructed on around the 1970's for rapid economic growth in Korea. In particular, it is believed that there are many aged concrete slabs for Highway bridges in these days. Thus new construction method of concrete slabs are strongly needed to minimize the traffic congestion during the repair works. The objective of this research is to develop the new constructional method of concrete slab in bridge structure, which can contribute to minimize the traffic congestion to be occurred during the repair and rehabilitation works of aged concrete slab, and can also assure the reliable quality through the minimization of in-situ works at the site. I-beams with punch holes will be manufactured in accordance with the specification in the factory, and will be preassembled into the panel. After erecting the preassembled panels in the site, concrete will be poured into the slab panel. This research is to investigate physical properties of I-Beam with punch holes itself, and then to investigate structural properties of assembled I-Beam panels through static and fatigue test, of which result can be utilized for the development of the new constructional method for concrete slab in bridge structure.

• 농업과학연구
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• 제39권2호
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• pp.263-270
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• 2012

The vitalization of Agro-industrial complex could be an alternative to enhance farmers off-farm income and overcome FTA's impacts on the import of agricultural products. However, it is evaluated the governmental policy on the Agro-industrial complex has not been successfully done as expected. The Agro-industrial complex started to be composed in 1984 and the 427 Agro-industrial complex have been composed nationwide by 2011. Meanwhile, three Agro-industrial complex where 61 factories are running have been composed and two Agro-industrial complex are being under construction in Seocheongun as of 2011. It is investigated that there are constraints in the government supporting systems for Agro-industrial complex. They are; Aged and poor infrastructure facilities, Weak marketing competition, Scattered supporting agencies, and Poor loan system, etc. In this respect, the policy of supporting system was suggested and recommended to vitalize Agro-industrial complex in the study. They are; Better loan system, Improving aged facilities, Marketing support, Assisting technology, Suppling labor power, and Forming factory-network, etc.

• 한국공간구조학회논문집
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• 제16권2호
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• pp.79-88
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• 2016

Modular buildings are constructed by assembling modular units which are prefabricated in a factory and delivered to the site. However, due to a problem of noise between floors, concrete slab is usually poured at the top or bottom level of a modular unit in Korea. This greatly increases the weight of buildings, but designing vertical members of modular units to resist overall gravity loads is very inefficient. In this study, considering domestic building construction practices, feasible structural systems for tall modular buildings are proposed in which separate steel frames and reinforced concrete core walls are designed to resist gravity and lateral loads. To verify performance, a three-dimensional structural analysis has been performed with two types of prototype buildings, i.e., a residential building and a hotel. From the results, wind-induced lateral displacements and seismic story drifts are examined and compared with their limit values. Between the two kinds of buildings, the efficiency of the proposed system is also evaluated through a comparison of the weight of structural components. Finally, the effect of a floor diaphragm on the overall behavior is analyzed and discussed.

• 지질공학
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• 제25권4호
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• pp.547-555
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• 2015

연구에서는 부산물석회 혼합토를 이용하여 조성된 시험성토체에 대한 지반공학적 특성에 대하여 고찰하였다. 연구에 사용한 부산물석회는 인천의 화학공장에서 소다회(Na₂CO₃)를 생산하는 공정에서 부수적으로 발생하는 부산물이다. 현장조성 후 3년이 경과된 후에 시험성토체를 대상으로 현장밀도, 평판재하시험, 동적콘관입시험, 현장 CBR시험을 수행하였다. 시험결과로부터 성토재료로써의 부산물석회 혼합토의 지반공학적 특성이 제시되었다.

• KIEAE Journal
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• 제7권6호
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• pp.113-118
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• 2007

The composite beam adopted in the study was designed to reduce the floor height as well as to embed the top flange of steel frame into the slab that will enable to avoid applying the fire-resistant coating and to unify the joint method with a steel frame-type. As the steel frame and bottom concrete of the beam is pre-fabricated at the factory it could reduce the overall schedule at the jobsite. Applying such composite beam system to the work is expected to provide the efficient and enhanced performance, given the current tendency of the building construction that tends to be getting higher, larger and dense. The study focused on combining the composite beam with various column systems in a bid to propose the details thereof. A desirable composite girder can be adopted depending on site conditions through the evaluation of various beam and jointing approaches. Among the column systems applied to the study are steel column, SRC column, RC-PC column and RC column. The ways of combining with the columns addressed in the study were categorized into the rigid joint, pin joint, steel frame joint and bracket type joint. Besides, the instruction for site fabrication of beam-column was added in an effort to help set up the site fabrication procedures.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2021년도 추계학술대회
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• pp.82-84
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• 2021

스마트 공장 구축사업을 통해 생산 설비로부터 전력, 진동, 압력, 온도 등의 센서 데이터가 수집되고 있으며 데이터 분석을 통해 예지보전, 불량예측, 이상탐지 등의 서비스 개발이 진행되고 있다. 일반적으로 제조데이터의 경우 정상과 비정상 데이터의 불균형이 극심하여 이상탐지 서비스가 선호되고 있다. 본 논문에서는 이상탐지 서비스 개발의 전단계로 제조데이터의 특징 데이터 추출을 위해 FFT 방법을 사용하였으며, 이를 통해 생산되는 제품을 분류해보고 그 결과를 확인하였다. 즉, 제품별 대표 패턴을 FFT 변환 후 상관계수를 계산하여 제품분류가 가능한지 확인하였다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2021년도 추계학술대회
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• pp.78-81
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• 2021

스마트공장 구축사업을 통해 제조업의 생산설비에 센서가 설치되고 각종 공정데이터를 실시간으로 수집할 수 있게 되었다. 이를 통해 제조공정의 설비이상으로 인한 생산중단을 줄이기 위해 실시간 설비 이상 탐지에 대한 연구가 활발히 진행되고 있다. 본 논문에서는 생산설비의 이상탐지를 위해 제조데이터를 딥러닝 모델인 Autoencoder(AE), VAE(Variational Autoencoder), AAE(Adversarial Autoencoder)에 적용하여 그 결과를 도출하였다. 제조데이터는 단순 이동 평균 기법과 전처리 과정을 거쳐 입력데이터로 사용하였으며, 단순이동평균 기법의 윈도우 크기와 AE 모델의 특징벡터 크기에 따른 성능분석을 실시하였다.

• 생물환경조절학회지
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• 제5권2호
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• pp.174-186
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• 1996

This study was carried out in order to understand the plan, design, constructing and actual condition of management of modernized horticultural facilities in Kyungpook Province which had been constructed from 1992 to 1995 funded by Government support. The aim of this study is to provide reference data for success of the forth project. It was performed by making up a question about driving of project and management condition of equipment after constructing. The results obtained from this study are as follows: 1. 73.5% of facilities horticulture farmhouse recognized that the prospect of greenhouse is bright, but 92.5% of the farmhouse also recognised that they need technical consultation on protected horticulture farming. Therefore, technical educations would must be enhanced about foundation of greenhouse and cultivation technique. 2. The holding times of explanatory meetings, cause of understanding to farmhouse, were one or two times in greenhouse construction, and 62.5% of the farmhouse expressed the insufficiency at the explanation and educational data. For this reason, it was judged that the construction contract had been delayed more than 5 months in 49.3% of the farmhouse after the decision of project budget. 3. In constructing after a contract, the rates of construction delay is 53.4% and defect occurrence is 41.1%. The biggest reasons of construction delay was insufficiency of worker and materials supply. Each percentage is 29.1%. And the reason of defect occurrence is badness of machinery equipment(62.9% ). 4. In management of greenhouse, a pipe-constructed plastic film greenhouse changes plastic film every one and three years because of sticking dust on plastic film. It was needed to about in cleaning technique of coverings. Because that used 3-5 years only half of the expected life span. 5. The order of broken rating in the subsidiary equipment is like this lollop ventilator (42.8%), a general control system(33.3%) especially, in the case of a general control system, the rate of all family can control is 52.7%. so, it is time to develop easy control equipment which every one could use as soon as possible. 6. When choose heat generator as decide capacity, the most priority is the mount of heat generator the percent is 45.5% heat generator and as decide model, the private purchase's percent is 77.3%. It is higher than a public bidding heat generator the percent is 22.7% heat generator when it compare with a public bidding. In the case of $CO_2$ generator, using rate is only 19.0%. The using rate is very low, so it needs education how to use depends on the way of the subsidiary equipment. 7. In the case of seedlings, it is asked to use factory-processed seedling effectively. because it's difficult to get security of labors(58.8%), hoped crops (55.9%) access same crops(29.4%) much more and changing of crops depends on market situation. that is the main reason the lack of knowhow.