• International Journal of Highway Engineering
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• v.3 no.2 s.8
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• pp.141-147
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• 2001

Maintenance cost for managing the whole network of Expressway system in Korea increases rapidly with the increase of the total length of the system. Implementation of the Pavement Management System(PMS) is essential for efficient management of the Expressway with a limited budget. The purpose of this study is to develop the main algorithm of PMS for Korea Expressway System and to associate the algorithm with database and the Highway Geographic Information System(HGIS) recently developed. Emphasis is laid on developing the algorithm as easy as possible, so that the users can use the PMS without practical difficulty. PMS is not the decision maker, but just a supporting system for the user. The algorithm is designed in such a way that the users can modify the decision criteria if necessary. The user is the one who makes the final decision of the priority and the maintenance alternatives. The users can also inquire the current condition of the whole Expressway network in detail by association of the database and the algorithm with HGIS.

• Journal of Plant Biotechnology
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• v.39 no.3
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• pp.127-132
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• 2012

We analysed the current status of development of GM crops and national biosafety framework including legislation-related agricultural GMO in China to provide the policy for the development of global GM crops in Korea. In China, several GM crops including cotton, petunia, tomato, sweet pepper, poplar, and papaya have been approved for commercialization and they have been cultivated at more than 4 million ha. In addition, GM rice and GM maize have also obtained approval for productive testing in 2009. China will be the first country to approve GM rice for commercialization. Prior to commercialization in China, all GM crops must be approved by government authority for biosafety assessment specified by national legislation including restricted field testing, enlarged field testing, productive testing and safety certificate. According to China's legislation, agricultural GMOs have been classified by research and testing, production and processing. All GMOs must go through 3 steps of field testing (restricted, enlarged and productive). Prior to conducting each field testing, it has to be approved by government authority. It is assumed that at least one to two years will be taken for each step of field testing (total 4 to 8 years to obtain the final safety certificate) along with a large amount of budget.

• Journal of Intelligence and Information Systems
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• v.29 no.3
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• pp.79-101
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• 2023

The current status of local road pavement management in Jeollabuk-do only relies on the accomplishments of the site construction company's pavement repair and is only managed through Microsoft Excel and word documents. Furthermore, the budget is irregular each year. Accordingly, a systematic maintenance plan for local roads is necessary. In this paper, data related to road damage and road environment were collected and processed to derive possible areas which could suffer from road damage. The effectiveness of the methodology was reviewed through the on-site inspection of the area. According to the Ministry of Land, Infrastructure and Transport, in 2018, the number of damages on general national roads were about 47,000. In 2019, it reached around 38,000. Furthermore, the number of lawsuits regarding the road damages were about 93 in 2018 and it increased to 119 in 2019. In the case of national roads, the number of damages decreased compared to 2018 due to pavement repairs. To measure the priorities in maintenance of local roads at Jeollabuk-do, data on maintenance history, local port hole occurrence site, overlapping business section, and emergency maintenance section were transformed into data. Eventually, it led to improvements in maintenance of local roads. Furthermore, spatial data were constructed using various current status data related to roads, and finally the data was processed into a new form that could be utilized in machine learning and predictions. Using the spatial data, areas requiring maintenance on pavement were predicted and the results were used to establish new budgets and policies on road management.

• 한국도로학회:학술대회논문집
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• 2004.02a
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• pp.51-58
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• 2004

• 한국도로학회:학술대회논문집
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• 2000.11a
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• pp.133-138
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• 2000

• Journal of the Society of Disaster Information
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• v.8 no.2
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• pp.100-107
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• 2012

The main purpose of this research is to propose advanced bridge-decks surfacing from the examples of In-Cheon bridge with Guss asphalt and Gyul-Hyeon bridge with stone matrix asphalt(SMA) concrete. The research results presented that the Guss asphalt concrete pavement was weak when rutting was developed due to the low resistance at high temperatures. The SMA concrete pavement demonstrated good resistance to plastic deformations and was easy to maintain pavement conditions. The results mentioned above are generalized in developed counties where surfacing pavement techniques for steel bridge-decks are advanced. However, due to the lack of construction experiences in Korea, appropriate construction guidelines and organized research for the steel bridge deck pavements are necessary for more advanced steel bridge decks surfacing.

• Korean Journal of Construction Engineering and Management
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• v.8 no.1 s.35
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• pp.124-131
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• 2007

Project management means usually managing the rate of construction progress. But it also contains preparing scheme of execution and establishing plan for equipment, material, labor force to finish project within expected duration. In this paper to establish effective project planning a road pavement operation is selected as a case and simulation method is used for analyzing it. Next probability distributions are created after analyzing collected data and these are reflected in simulation model. Simulated result is compared with real project planning using models of lean concrete pavement process and concrete slab pavement process to verify efficiency of this model. In the event we know that project planning using simulation is more effective than one of the field in the aspects of duration and cost. Meanwhile simulated result in this paper has a limitation in accuracy because various constraints of filed are not reflected in it. However if we reflect this constraints in model through examining field in future this limitation is expected to be improved.

• Journal of Practical Engineering Education
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• v.11 no.1
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• pp.33-41
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• 2019

A pavement construction process consists of series of lay-down operation for pavement materials to form a designated thickness and compaction operation for the lay-down layer to form a designated strength. A technological breakthrough in pavement compaction equipment was made in last 15 years in western countries: intelligent compaction roller, that is equipped with GPS along with other pavement response sensors is becoming a game-changer in pavement construction. This paper introduces AR system that may be used in asphalt pavement compaction operation using intelligent compactor. Since AR technology is very new concept in road construction society, a suggestion for accompanying education program was also made for specific task group in pavement compaction operation. Since AR technology has not been introduced in asphalt pavement compaction operation, the AR compaction management would lead the construction quality of asphalt pavement to the beyond level.

• The monthly packaging world
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• s.262
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• pp.94-104
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• 2015

환경부는 '화학물질의 등록 및 평가 등에 관한 법률(화평법)'과 '화학물질관리법(화관법)' 시행규칙을 공포하고 지난 달부터 시행했다. 환경부에 따르면 두 법안은 화학물질의 체계적인 관리로 사전에 안전사고를 예방하고 국민건강과 환경을 보호하기 위해 제정됐다. 화학물질의 생산 유통 등 모든 과정의 안전관리를 강화하는 것이 골자다. 우선 화평법 시행에 따라 모든 신규 화학물질과 연간 1톤 이상 제조 수입되는 기존 화학물질에 대한 등록이 의무화되고 등록 신청 기준도 강화된다. 다만 제조 수입량이 연간 1톤 미만일 경우 등록 신청 제출 자료를 정식 등록 9개보다 적은 4개로 간소화하고 등록기간도 30일에서 3~7일로 줄였다. 또 유해물질 함유제품으로 인한 피해를 예방하기 위해 생활화학 제품 15종을 우려제품으로 지정해 안전 표시기준을 준수하도록 했다. 관리대상 품목은 세정제 합성세제 표백제 섬유유연제 코팅제 접착제 방향제 탈취제 방청제(금속부식 방지제) 김서림방지제 물체염탈색체 문신용염료 소독제 방충제 방부제 등이다. 화관법에서는 유해 화학물질 취급 때 공통 적용되는 46개 준수사항을 규정하고 물질별로 구체적인 취급기준을 고시하도록 했다. 취급시설의 설치 관리기준도 시설 종류별로 구체화했다. 새로 도입되는 장외 영향평가는 취급시설 설치자가 화학사고 발생 시 사업장 주변지역 사람이나 환경에 미치는 영향을 사전에 평가해 시설을 안전하게 설계 설치하도록 규정했다. 과징금과 행정처분 기준도 구체화했다. 행정처분은 2년 내 위반 횟수에 따라 경고 개선명령 영업정지 허가취소로 차등화하고 사고가 일어나면 사상자와 사업장 밖 피해액을 기준에 따라 산정해야 한다. 본 고에서는 두 법률의 주요 내용과 함께 주요 문의 사항을 살펴봄으로써 이해를 도우고자 했다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.11
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• pp.314-321
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• 2016

Adapting the maintenance criteria of Seoul City pavement is not applicable for borough pavement due to differences between the pavement of Seoul city and the borough, such as priority of maintenance, traffic volume, thickness of pavement, and pavement deterioration rate by distresses. To develop an efficient and reasonable evaluation method of the Seocho borough pavement condition within a limited budget, this study suggested the borough pavement condition evaluation model based on the PMS (Pavement Management System) of Seoul Metropolitan SPI (Seoul Pavement Index). The SPI was modified to predict the remaining life and determine the proper maintenance method for the pavement in Seocho borough. This was suggested to reflect the rate of the designed performance life and field performance life of pavement as well as the pavement condition at the stage of the completion of construction. Primary variables, such as crack, rutting and IRI in the final model affect the overall performance life due to their even composition. Therefore, the suggested model considering the lowered criteria, design performance factor, and construction factor can be used for the more efficient maintenance of Seocho borough pavement.