• Journal of Digital Convergence
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• v.16 no.4
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• pp.87-94
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• 2018

Intelligent transportation systems are one of the most important new forms of infrastructure on domestic roads, and is a system that makes possible the most efficient movement of vehicles on a road. The High Pass system, which is a domestic intelligent transportation system, started a little later than in other countries but developed at a rapid pace. With the recent introduction of smart tolling technology, it provided an opportunity to stop and review the tolling system. This study aims to investigate the driving method and results of LDCC for domestic smart towing through case study. Unlike other companies, Lotte Data Communication Company has long invested in payment systems. It has little experience investing in infrastructure, but participated in the Smart Toll System at the Gwangan Bridge in cooperation with the Busan City government, to lead the development of intelligent transportation systems. LDCC, which has made new investments, not only exceeded its existing core competencies, but also upgraded Korea's tolling system's ability to reduce greenhouse gas emissions and improved its financial performance.

• Asia Marketing Journal
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• v.7 no.3
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• pp.83-104
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• 2005

This case describes Lotte Mart's practices and achievement in the aspect of social responsibilities and ethics management and its implications in retail industry. Lotte Mart set ethics management as core business objective, and establishes and operates a variety of ethics management programs for each of customer, shareholders, employees, suppliers and society. By these programs, Lotte Mart could achieve improvement in quality and price competitiveness through better partnership with supplier, get more efficiency in business through higher morale among employees, and gain improved customer loyalty through customer satisfaction.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2023.05a
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• pp.317-318
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• 2023

This study is part of the carbonation degree DB accumulation through quantitative analysis of carbonation depth, Ca(OH)₂ and CO₂ according to the type of finish and years of use of old concrete structures in order to predict the amount of CO₂ that can be absorbed through carbonation of concrete. To this end, the depth of carbonation of the concrete core specimen is measured using an indicator, and the dry amount of water combined with CO₂ in the sample is measured using a differential thermal gravimetric analyzer for samples in the carbonation area and non-carbonated area classified by the indicator, and the absorption compared to the weight of the sample. The amount of absorbed CO₂ was calculated. In addition, the degree of carbonation was calculated through quantitative comparison of Ca(OH)₂ in the carbonation section and non-carbonation section. In the future, we will continue to add the survey and analysis data of dismantled structures and use them as basic data for estimating the amount of carbon dioxide that can be absorbed according to the exposure conditions and years of use by concrete mix.

• The Safety technology
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• no.164
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• pp.12-14
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• 2011

1990년대까지만 해도 김포구제공항은 외국과 우리나라를 오가는 유일한 관문으로, 늘 관광객과 국제적인 인사들로 북적했다. 그로부터 20여년이 지난 지금, 김포공항의 위상은 많이 달라졌다. 인천국제공항이 새로 생기면서 국제공항으로서의 면모가 다소 떨어지고, 찾는 발길도 크게 줄어든 것. 하지만 김포공항은 조용히 또 한 번의 비상을 준비하고 있다. 그리고 그 중심에는 롯데건설이 시공하고 있는 '김포국제공항 SKY PARK 조성사업'이 있다. 이 사업은 대지면적만 19만5천여$m^2$에 달하는 옛 국제공항주차장부지에 쇼핑몰(백화점), 영화관, 호텔을 조성하는 것으로, 올 11월 준공을 눈앞에 두고 있다. 실로 강서지역에 새로운 중심지가 만들어 지는 것. 김포공항의 변신이라는 점도 화두지만, 이 사업을 빛나게 하는 것이 또 하나 있으니 바로 '안전'이다. 이곳의 시공사인 롯데건설은 2007년 사업을 시작한 이래 지금까지 빈틈없는 안전관리로 무재해 300만 시간을 기록하고 있다. 안전으로 강서의 신 중심을 만들고 있는 이곳 현장을 찾아가 봤다.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2019.11a
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• pp.14-15
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• 2019

In this paper, it was tried to prove the possibility and effect of coordinate measurement by using MEP layout equipment at the construction stage, and to propose a method to improve measurement accuracy during construction. For this study, the passenger terminal site, which is a long span structure, was selected and compared with three dimensional CAD drawings and construction measurement results using MEP layout equipment for the precise construction of long-span irregular curved roof layers. As a result, it was found that it is possible to construct three-dimensional curved roof layers using MEP layout equipment through measurement and analysis.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2019.11a
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• pp.108-109
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• 2019

Top-down construction is a useful method of utilizing the working space, economic benefits and shorten the construction period. Precision construction of the elevator core is very important for safety of the top-down structure. In this study, the layout system for the field-BIM(Building Information Modeling) was used to precisely construct the elevator core in the basement and the ground. Through the layout system, it was possible to process the construction status, review the design results and construction errors, and confirm whether there is or not within the construction error range for elevator installation.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2022.04a
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• pp.220-221
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• 2022

With reent changes in energy sources, infrastructure facilities for energy charging are increasing around living areas. The infrastructure facilities have a slight possibility of explosion, and for this research on protection is needed. In this study, the performance of the reinforcement type is reviewed by examining the destructive properties after applying the impact by the high-velocity projectile to the cement composite to which various reinforcement methods are applied.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2022.04a
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• pp.140-141
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• 2022

CFD analysis was performed to analyze the temperature distribution of the inner space of the curing house according to blocking the opening of the gang-form with a tent in case of concrete pouring and heat curing of the apartment house during the winter season. If the gang-form opening is closed with a tent during internal heating using a hot air blower in the winter, the internal temperature rises compared to the non-reserved due to air-tightness of the curing spaces, and uniform temperature distribution can be ensured. In addition, it is possible to increase curing efficiency by reducing the amount of heat supplied and shortening the heating time.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2020.11a
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• pp.186-187
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• 2020

Damage to temporary facilities and structural members caused by excessive loads in the field continue to occur. If the load can be monitored in advance, the risk can be prevented. In this study, a load cell sensor is installed under the system support, and load data is wirelessly transmitted through a Bluetooth AP(wireless). Risk prediction system is proposed through an construction alarm when an abnormal load occurs through real-time multi-point monitoring by sensor location.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2020.11a
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• pp.183-183
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• 2020

MEP layout and 3D Laser scanning are widely used equipment for displacement measurement in construction site. In this study, MEP layout and 3D Laser scanning were used to measure the lateral displacement of the same structure, and then the advantages and disadvantages of each were compared and analyzed. In general, it has been shown that MEP layout can save a lot of time compared to 3D Laser scanning. And it was found that the lateral displacement measurement results measured at a distance of 15m were similar to each other.