• Proceedings of the Korea Information Processing Society Conference
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• 2011.04a
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• pp.1521-1524
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• 2011

정보화의 발전은 모든 산업의 시스템화 및 자동화를 이끌어가는 원동력으로 국가 산업에 융복합되어 시너지효과를 발현하고 있다. 이러한 정보화의 일환으로 건축공사의 50~60%차지하는 건설자재의 정보화는 필수불가결한 요소이다. 특히 건설자재의 가격정보는 자재선정을 위한 결정적인 요소임에도 불구하고 현장여건에 맞는 정확한 가격정보를 제공하기에 어려움이 있는 것으로 조사되었다. 따라서 자재선정 의사결정자가 건설자재의 다양한 정보항목을 검색하고, 활용할 수 있는 건설자재에 대한 정보제공 시스템의 필요성과 온라인을 통해 현장여건에 맞는 가격정보 제공의 필요성이 대두 되었다. 이에 본 논문에서는 자재선정 의사결정자들이 온라인 자재정보시스템을 통해 검색한 자재의 현장여건에 맞는 가격정보를 빠르게 획득할 수 있도록 지원하는 견적지원 기능을 제시한다. 이 시스템은 관계데이터베이스를 통해 정보를 저장하고 활용한다. 본 연구는 건설분야 종사자들에게 건설자재선정을 위한 지원 도구로써 활용될 것이며, 이는 최적자재선정을 통한 건축물의 품질을 개선하는데 기여할 수 있을 것이다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2014.05a
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• pp.475-478
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• 2014

This paper proposed the position tracking and recognition method of workers and cars in construction field. The reason why the position of workers and cars has to be tracked is to prevent the safety accident, emergency rescue, and theft of building materials by unauthorized people and car, etc. To realize the tracking, it needs to adopt the Information Telecommunication technology to the construction field as an integrated support system. In this paper, we proposed the continuous positioning tracking algorithm for workers and moving cars using the selected wireless communication network. And we proposed the virtual gateway method to detect the entrance status of moving workers and cars. All of these proposed methods are evaluated in real construction field using the prototype of support system made by ourselves.

• Proceedings of the Korean Society of Computer Information Conference
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• 2014.07a
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• pp.123-125
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• 2014

기존의 건설현장은 오프라인에 의한 의사 전달 또는 유.무선 전화 등을 통한 일괄적인 보고를 통해 즉각적인 상황 파악 및 의사결정이 불가능한 제약조건을 갖는다. 이로 인해서 공사기간의 연장, 공사비용 증가, 투입 인력 증대 등으로 인한 부작용이 발생하고 있다. 그러므로 건설 산업 현장에서 발생하는 다양한 예외 상황들에 대해 즉각적인 처리를 하지 못하는 현실적인 문제들을 클라우드 컴퓨팅 환경과 서비스를 이용하여 건설 현장에서 발생 가능한 예외상황에 대한 빠른 보고가 가능하도록 하고, 이를 바탕으로 의사 결정권자가 정확한 상황 판단을 통해 빠르고 경제적인 의사결정을 지원할 수 있는 처리 방법에 대해 제안하고자 한다. 제안시스템은 클라우드 서비스를 이용해 건설현장에서 빠른 의사결정이 가능하도록 함으로써 건설 현장의 정확한 상황 파악 및 효과적인 의사전달이 가능하며, 공사비 절감 및 공사 중에 발생할 수 있는 사소한 견해 차이로 인한 공사기간 낭비도 막을 수 있다.

• Smart Media Journal
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• v.6 no.4
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• pp.50-57
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• 2017

As the construction sites are far from the construction site offices, the construction workers perform work on the sites with a variety of reference books and materials. This inconvenience may lead to construction accidents, and as such, the demand for mobile app development for simplifying work is increasing. Therefore, in this study, the trends of mobile research and mobile app development, and their application to the construction field were investigated to develop a mobile app that would help construction workers process their work. Based on this, mobile services applicable to construction sites and work process improvement plans were proposed. To apply the proposed work process, the functions of the existing construction project management system were improved, and a mobile app that could be used in both the Android and iOS environments was developed.

• Korean Journal of Construction Engineering and Management
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• v.9 no.4
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• pp.101-110
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• 2008

In order to achieve the best performance of a project, uncertainties involved in the building construction process need to be identified in the planning phase of the project. Risk management plays a significant role in construction to minimize risk occurred due to uncertainties of a project. Although the importance of the risk management has been known to the construction industry, a more effective system should be developed to meet the demands of the industry. The purpose of this study is to develop the effective risk management system for scheduling the construction processes. The study provides a tool that can optimize the management system which would assist managers to identify schedule risks in the planning phase of the project.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.30 no.5D
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• pp.513-522
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• 2010

Underground construction for traffic networks, complexes, and storage facilities has risen as an effective land use plan for dealing with emerging problems such as overcrowded urban cities and traffic jams. This paper performed an economic feasibility analysis of the development of the integrated field management system which provides field workers and managers with 3D-based location tracking and clear communication during underground construction works. To conduct the analysis, processes and problems of field management for underground construction were analyzed and deduction in accidents and field management costs and productivity improvement were estimated as expected benefits. Based on computed benefits and costs, an economic analysis was conducted using Benefit/Cost ratio(B/C), Net Present Value(NPV), and Internal Rate of Return(IRR) and then sensitivity analysis was performed to cope with the uncertainty of assumed variables.

• Korean Journal of Construction Engineering and Management
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• v.5 no.2 s.18
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• pp.106-114
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• 2004

As the scale of construction work is enlarged, complicated and diversified, much construction information from the large number of construction sites is generated and reported to the head office. To control much information generated in construction sites simultaneously, the necessity of supporting system which could extract necessary information is increased. However, comparing with those of large companies, medium-sized companies's organization of head office and management system are weak. So it's difficult to manage multi-projects. Among these site managements, resource management is an important management area. But, resource planning is based on experience and judgement and has not associated with schedule information. So when schedule is changed, the plan must be amended manually. This study investigates material-planning model for multi-project management which is connected with daily report system and scheduling software.

• Korean Journal of Construction Engineering and Management
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• v.7 no.4 s.32
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• pp.126-136
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• 2006

Most of large construction companies have developed construction information systems and their ultimate goals should be improvement of the management efficiency of the construction projects. In order to make them successful, the systems should be designed to meet system users' needs Therefore purpose of this study is to evaluate the current information management systems from the viewpoint of the system users, especially on-site engineers. Questionnaire surveys and interviews have been conducted for the highly ranked 10 construction companies on four major factors including the functions of the systems and satisfaction level of each function, recognition of the use effect, informatization support. From the surveys results, correlation between the functions of the systems and the others has been statistically analyzed.

• Korean Journal of Construction Engineering and Management
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• v.12 no.5
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• pp.55-62
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• 2011

Recently, construction work has diversified and become larger. So, a systematic measurement and management measures are required. In this study, USN technology which is one of the most important network technologies was selected. Based on elements derived from comparison of each element of standard was calculated according to the importance of the elements. The importance of the decision to support the proposed model is explained by integrating the importance of each criteria and decision-support model by considering the situation and creating a matrix of considerations for the construction of earthwork. The results of this study show that USN technology in the context of judging criteria can be selected for the earthwork.

• Journal of the Korean Association of Geographic Information Studies
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• v.18 no.1
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• pp.64-73
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• 2015

Recently, the integrated utilization of technology with IT is in demand for the effectiveness of field management together with the prevention and prompt action on safety accident at construction site. In addition, the establishment of construction site support system is necessary to implement the securing of worker's safety, smooth work instruction, efficiency in construction, and others. Data standardization and network architecture were designed regarding data and sound information for data transmission between systems and management. These were to construct USFSS based on integrated VI-GNSS technology in this research. In the stability test of data for each system constructed through it, around 98% stability was secured between workers and for transfer vehicle system within underground structure and field server system in regards to the data transmission stability, around 100% stability was secured between field server system and control system, respectively. Also, in the sound transmission stability test, around 99% reliability could be secured with 1km distance as its standard in case of sound transmission from underground structure construction site to field office near the field through wireless FRS system.