• Construction Engineering and Management
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• v.4 no.1 s.13
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• pp.37-42
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• 2003

• Proceedings of the Korean Society Of Semiconductor Equipment Technology
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• 2004.05a
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• pp.11-33
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• 2004

• Defense and Technology
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• no.9 s.67
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• pp.54-62
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• 1984

• 월간 기계설비
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• s.309
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• pp.51-53
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• 2016

• 한국도로학회:학술대회논문집
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• 2000.11a
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• pp.101-107
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• 2000

• Journal of the Korea Convergence Society
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• v.12 no.2
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• pp.279-285
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• 2021

The materials, parts, and equipment industries are the backbone of the manufacturing industry and a key element of competitiveness. However, in the case of Korea, as it relies on foreign countries for core materials, parts, and equipment, it is in danger of not only industrial competitiveness, but also security. This study first looked at the outline and current address of the materials, parts, and equipment industries, identified problems and improvements, and examined the efforts and achievements so far for the localization of materials, parts, and equipment in Korea. In addition, after looking at the improvement measures for the government's material, parts, and equipment industry at the institutional level or at the ecological level, the current status and actual condition of localization of local materials, parts and equipment were investigated, and problems and improvements were analyzed. Lastly, this study presented a technology development plan for localization of parts and materials in the region and various institutional improvement plans related to commercialization.

• Journal of the Korean Geographical Society
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• v.41
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• pp.79-94
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• 1990

본 연구에서 구축한 PC-based GIS는 소규모 예산의 교육용 및 연구용 시스템이다. OSU MAP은 PC XT에서도 운용되기 때문에 최저 157만원선(CPU 100만원+디지타이저 50만원+소프트웨어 7만원)으로 장비할 수 있다. 그러나, AT386기종에 값싼 디지타이저와 선형배열스캔너를 부착한 하드웨어 시스템과 래스터/벡터 자료구조의 소프트웨어 시스템을 장비하는 데에는 약 2000만원 선 (CPU 500만원+디지타이저 50만원+스캔너 300만원+소프트웨어 1000만원)이 소요된다. 6-7년 전에 이와 유사한 처리능력의 32비트 기기를 장비하려면 최소한 3억원의 예산이 소요되었던 것을 고려하면 대단한 가격하락이다. 이제, 우리나라에서도 약간의 지혜와 성실을 바탕으로 교육용 및 연구목적의 GIS를 향유할 수 있게 되었다.

• Proceedings of the Korea Concrete Institute Conference
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• 2008.04a
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• pp.1029-1032
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• 2008

Nowadays, the necessity of the NDT technique for concrete structure has been increased due to maintenance of infra-structure. With this reason, NDT detecting technique has been considered as a effective maintenance method to prevent the rapid degradation of the infra-structure. In this study, to investigate the internal defect of concrete structure, ultrasonic detection device and radar equipment was applied then tested in laboratory and field. In the result of the experimental test, the internal cavity and steel arrangement can be detected and it was possible to adopt the ultrasonic detection method to the maintenance of concrete structure. And an algorithm for performing the maintenance procedure of concrete structure applying ultrasonic detection device and radar equipment was developed and suggested in this study.

• Korean Journal of Construction Engineering and Management
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• v.23 no.4
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• pp.3-14
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• 2022

Autonomous equipment requires a large amount of data from various environments. However, it takes a lot of time and cost for an experiment in a real construction sites, which are difficulties in data collection and processing. Therefore, this study aims to develop a virtual environment for autonomous tower cranes technology development and validation. The authors defined automation functions and operation conditions of tower cranes with three performance criteria: operational design domain, object and event detection and response, and minimum functional conditions. Afterward, this study developed a virtual environment for learning and validation for autonomous functions such as recognition, decision making, and control using the Unity game engine. Validation was conducted by construction industry experts with a fidelity which is the representative matrix for virtual environment assessment. Through the virtual environment platform developed in this study, it will be possible to reduce the cost and time for data collection and technology development. Also, it is also expected to contribute to autonomous driving for not only tower cranes but also other construction equipment.

• Proceedings of the Korean Society of Coastal and Ocean Engineers Conference
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• 2002.08a
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• pp.227-231
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• 2002

연안에서의 부유물질 농도는 파랑, 조류 등 수리 역학적 현상과 기상 조건 및 저질의 상태에 따라 그 변동양상이 결정된다 (Moody et at.,1987; Ridderinkhof et al., 2000). 현재까지 개발된 장비로는 시ㆍ공간적으로 변동하는 부유물질 농도의 특성을 충분히 관측하고 이해하는 데는 한계가 있다. 그러나, 비교적 단순한 장비에 의존하는 연구일지라도 우리나라 주변 연안에서 부유물질 농도 변동에 대한 정량적인 연구는 매우 부족한 실정으로 기초적인 자료의 축적이 거의 전부한 상태이다. (중략)