• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.393-400
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• 2022

Agent-based modeling (ABM), as a relatively new simulation technique, has recently gained in popularity in the civil engineering domain due to its uniquely advantageous features. Among many civil engineering applications, ABM has been applied to facility operation and management, such as energy consumption management, as well as the enhancement of maintenance and repair processes. The former studies used ABM to manage energy consumption through simulating human energy-related behaviors and their interactions with facilities, as well as electrical, heating, and cooling systems and appliances, while the latter used ABM to enhance maintenance process through facilitating coordination, negotiation, and decision making between facility managers, service providers, and repair workers. The present study aims to provide a short qualitative review on the most recent applications of ABM in the above-mentioned areas. Based on the review and follow-up analysis, the study identifies the advantages, disadvantages, and limitations of ABM applications to facility operation and management, and offers several potential future research topics in the hope of filling the existing literature gaps.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 추계학술대회 논문집
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• pp.23-29
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• 2008

Most VE operation related to construction project is progressed in stage of planing or design phase, especially in case of domestic. It is encouraging fact and if you have VE process in stage of planning and design, you'll have experience a reduction of about 70% of total saving cost in which total construction process may occurred. However, recently the work of construction in overseas increase and almost is only construction-work, except planning and design process. As this reason, VE process for construction-work phase only is demanded in high necessity. VE in construction phase comes to accomplish intensively in the part which the design change does not follow, through know-how, equipment operating method and method of temporary-structure erection at the established construction-site learned, builders will be the possibility of reduction from 3% to 10% in constructive expense. This paper describes VE performing example in OO company's construction-work phase, and propose the methodology of VE performance in the phase of construction. And also it is aimed to extending VE applications into the overseas construction enterprise.

• 공업화학
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• 제16권2호
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• pp.217-225
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• 2005

H사의 유로변경식 고도하수처리 공법의 제어 변수가 DO와 수온 등으로 한정되어 있어 효율성의 만족도를 충족시켜주지 못하는 현재의 상황을 개선하고자 세 가지 개선방향을 설정하여 Simulation을 통한 Operation Data의 분석 및 장치구성과 실험을 통한 최적제어 Logic을 연구하여 이를 다시 S하수처리장에 설치 적용한 결과이다. 본 실험을 통해서 수온과 유량에 근간한 Operation Mode 변경의 최적화와 이를 통한 동력비 절감을 이루었고 암모니아성 질소의 농도에 따른 Operation Mode의 변경에서 일반 Normal Mode와 병행하여 Save Mode를 새로 적용하여 동력비 절감을 이루었다. 또한 DO 값을 송풍량과 수중폭기기의 교반속도에 의해 비례제어하고 유출수의 암모니아 농도에 따라 DO 값을 제어하여 안정적인 질산화를 이루었다. 이러한 결과는 공정효율의 극대화와 운영 및 유지관리비의 절감을 이루었다.

• 한국건설관리학회논문집
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• 제2권4호
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• pp.92-97
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• 2001

The level of awareness and actual implementation of integration and computerization in the construction industry is growing. However, it is not clear at this point how to assess the extent of their impact and to identify in which ways they better support the construction projects related to their success. The objectives of this research are the development of a model to evaluate the impact of integration and computerization on construction projects and the recommendation of guidelines for companies in identifying suitable ways for them to incorporate integration and computerization Into their operation. The developed conceptual model has been found robust enough to be used as a benchmarking tool in evaluating the performance of the construction process and to strategize its future operation.

• 한국지능시스템학회논문지
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• 제16권6호
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• pp.721-729
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• 2006

컴퓨터를 활용한 지식과 정보 처리를 위해 온톨로지를 구축하고 활용하기 위한 연구가 이루어지고 있다. 그러나 현재까지의 온톨로지 개발 방법 및 온톨로지 구축 도구는 온톨로지 개발 목적에 따라 제한적인 부분에서 연구되어 사용되고 있다. 그러므로 개발하려는 온톨로지 특성에 따른 적절한 온톨로지 구축 프로세스와 도구가 필요하다. 본 논문에서는 특정 분야의 비전문가가 언어 자원으로부터 지식을 개념화하고, 개념을 형식화하여 온톨로지를 구축할 수 있는 온톨로지 구축 프로세스(OntoProcess)를 제안한다. 그리고 다수의 온톨로지 구축자가 동시에 온톨로지 구축 작업을 행할 경우 i)지식의 개념화 과정에서 동일한 개념을 중복 정의하거나 ii)개념의 형식화 과정에서 형식언어와 포구사용법의 이해 부족으로 인해 온톨로지 구축 능률이 저하되는 문제가 발생할 수 있다. 이런 문제를 해결하기 위해 메타 온톨로지를 이용한 다중 온톨로지 구축 프로세스(OntoProcess)를 제안한다. 제안한 프로세스에 기반한 온톨로지 구축 시스템 (OntoProcess)을 개발하고, 실제 온톨로지 구축 실험을 통하여 제안한 프로세스와 시스템의 효율성을 확인한다. 그리고 온톨로지 구축 과정에서 발견된 문제점 및 이에 대한 해결 방안을 제시한다.

• 상하수도학회지
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• 제26권5호
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• pp.619-627
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• 2012

In order to determine reduction of greenhouse gas emissions (GHGs) when the submerged membrane bioreactor with granular sulfur (MBR-GS) is used in wastewater treatment plant (WTP), the amount of GHGs was compared and analyzed in the advanced treatment process of P wastewater treatment plant (WTP). The amount of GHGs was estimated by classifying as construction and operation phase in WTP. The amount of GHGs in construction phase was evaluated from multiplying raw materials by using carbon emission factors. Also the amount of GHGs in operating phase was calculated by using total electricity consumption and carbon emission factor. The construction of anoxic tank and secondary settling tank is unnecessary, because the MBR-GS conducts simultaneously the nitrification and denitrification in aeration tank and filtration by hollow fiber membrane. The amount of $CO_2$, $CH_4$, and $N_2O$ emitted by constructing the MBR-GS was 6.44E+06 kg, 8.16E+03 kg and 1.38E+01 kg, respectively. The result shows that the GHGs was reduced about 47 % as compared with the construction in the MLE process. In operating the MBR-GS, the electricity is not required in the biological reactor and secondary setting tank. Thus, the amount of $CO_2$, $CH_4$, and $N_2O$ emitted by operating in the MBR-GS was 7.39E+05 kg/yr, 5.80E+02 kg/yr and 2.44E+00 kg/yr, respectively. The result shows that the GHGs were reduced about 37 % as compared with the operation in the MLE process. Also, $LCCO_2$(Life Cycle $CO_2$) was compared and analyzed between MLE process and MBR-GS. The amount of $LCCO_2 $emitted from the MLE process and MBR-GS was 3.56E+04 ton $CO_2$ and 2.12E+04 ton $CO_2$, respectively. The result shows that the GHGs in MBR-GS were reduced to about 40 % as compared in the MLE process during life cycle. As a result, sulfur-utilizing autotrophic denitrification process (SADP) is expected to be utilized as the cost-effective advanced treatment process, owing to not only high nitrogen removal efficiency but also the GHGs reduction in construction and operation stage.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2011년도 춘계 학술논문 발표대회 1부
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• pp.211-212
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• 2011

The construction industry has become larger and higher in size. The process of high-rise building construction is complicated and has various conditions affecting productivity. Analysing productivity in high-rise buildings is difficult despite the various productivity analysis methods. In this study, data was collected from actual construction site to analyse the productivity of curtain wall operation by means of Work sampling and Method Productivity Delay Model. As a result, this paper suggests advantages and disadvantages deducted from comparing the two productivity analysis methods.

• 한국디지털건축인테리어학회논문집
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• 제10권2호
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• pp.49-60
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• 2010

The production process of construction industry is different from thing of the general manufacturing, likewise various participants make temporary teamwork for success of the project through sharing of information. But the each role of participants is individually changed to step in construction process stage and moreover it has complicated, entangled interests. The Construction Management was inducted for the effective management and operation of construction project. The Key of the Construction Management success depends on the cooperative relationship relation to major participants. The domestic construction system is difficult with many trial and errors for the frequent plan change. As the building are more bigger and complicated, Building Information Modeling is demanded design and maintenance. This evaluation was done by the trust on the system as well as Construction Management. And then it applies the BIM it analyzes the example of construcrion project.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2016년도 춘계 학술논문 발표대회
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• pp.231-232
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• 2016

Configuration Management (CM) is a process of identifying and documenting the characteristics of a Structures, Systems and Components (SSCs), and of ensuring that changes to these characteristics are properly assessed, approved, issued, implemented and verified. There are requirement management, change control, facility configuration information management for CM activities. In order to improve safety of Nuclear Power Plant(NPP), it is necessary to manage change item systematically. Existing CM concept is focused on the NPP in operation. On the other hand, NPP under construction is difficult to efficiently manage the change because of different change process from varoius stake-holders. This research considers method of consolidation change process for NPP to ensure that approved changes are accurately reflected in the design requirements, facility configuration information, and the physical configuration.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2013년도 춘계 학술논문 발표대회
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• pp.245-246
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• 2013

The construction of green building has distinct charicteristics by work classification by applying green technologies. Thus if the new technologies are applied to construction, unskiiled worker can experience construction time delay, reconstruction occurrence and quality decrease because of mistakes during the construction and work progress. For this background, we establish the work progress manual to secure quality and performance during the construction phase of green building and provide method to be used in the construction sight operation.