• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2018년도 추계 학술논문 발표대회
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• pp.143-144
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• 2018

This study the workability of synthetic resin form was examined through field application. results there was no warping or bulging of the mold during concrete placement in the field application. Also, the concrete surface finish of synthetic resin form was better than that of euro-form.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2002년도 봄 학술발표회 논문집
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• pp.133-140
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• 2002

This paper investigates the applicability of the modified Lanczos method using the power technique, which was developed in the field of quantum physics, to the eigenproblem in the field of engineering mechanics by introducing matrix-powered Lanczos recursion and numerically evaluating the suitable power value. The matrix-powered Lanczos method has better convergence and less operation count than the conventional Lanczos method. By analyzing four numerical examples, the effectiveness of the matrix-powered Lanczos method is verified and the appropriate matrix power is also recommended.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2023년도 봄 학술논문 발표대회
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• pp.239-240
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• 2023

In this study, concrete pumpability was investigated using a sliding pipe rheometer when the slump was different, and the cause was analyzed by comparing the actual field pump pressure. As a result of the experiment, it was found that the concrete pumpability was greatly affected by the slump measurement value.

• 한국터널지하공간학회 논문집
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• 제22권5호
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• pp.485-500
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• 2020

소규모 설비, 시공 용이성 등 다양한 장점으로 인하여 국내의 건설현장에서 광범위하게 사용되고 있는 그라우팅 관련 기술은 과거에 비해서 비약적으로 발전되었지만 품질의 균질성, 장기 내구성 및 환경공해 등의 문제점에 대한 개선 노력은 현재까지도 지속되고 있다. 최근 국내에서는 물유리계 그라우팅 재료가 갖는 낮은 강도와 내구성, 용탈현상 발생 등의 문제점을 개선하기 위하여 자기치유 물질을 이용한 그라우팅공법이 개발되었다. 자기치유 물질을 이용한 그라우팅공법은 주입재가 지반 내 물과 반응하여 생성한 결정 성장형 자기치유 물질에 의해서 주입재와 지반이 일체화되기 때문에 지반의 내구성 및 차수성 향상, 용탈방지 및 친환경성 등을 기대할 수 있는 것으로 알려져 있다. 본 연구에서는 △△터널 및 주변지반을 대상으로 자기치유 물질을 이용한 그라우팅공법의 예비시험 및 현장적용(표준관입시험, 현장투수시험, 공내 전단시험, 공내재하시험, 지시약반응시험 등)을 실시하였고 시공 전·후에 대한 실규모 시공조건에서의 주입범위, 차수 및 지반개량 효과 등을 비교, 분석하였다. 예비시험 및 현장적용 결과를 바탕으로 자기치유 물질을 이용한 그라우팅공법의 현장적용성 및 개량효과는 양호한 것으로 파악되었다.

• 한국농공학회지
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• 제41권2호
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• pp.92-103
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• 1999

A series of field tests were performed to suggest a rational method for the stability evaluation of soft clay. The behavior of settlement-displacement obtained by field monitoring system was used to compare and analyze with various stability evaluation methods, and to investigate the applicability of the methods for stability evaluation of soft clay. The limit equilibrium method, numerical analysis and field monitoring methods were used to analyze the stability evaluation. The horizontal displacement was abruptly increased when physicla properties of soft clay reached its maximum values and therefore, the values of these properties could be used to the fundamental data for stability evaluation. The evaluation of the stability of clay embankment was suggested to use inclination of ccrve rather than critical line, and the minimum satey factor of 1.2 or larger for natural clay was recommeded . Therefore, the evaluation of short term stability of soft clay could be effectively peformed with the hypefrbolic model and the field monitored data.

• Journal of Information Technology Applications and Management
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• 제19권4호
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• pp.153-169
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• 2012

In the rapidly changing field of Management Information Systems, the definition and educational programs must be continually reevaluated and revised. A study was conducted to find a way to which the modeling principle is applied for redefining the identity of Management Information Systems as an independent academic field and to develop a plausible MIS curriculum based on the modeling principle. Previous researches on the MIS frameworks, knowledge and technology requirements for IS professionals, and standard MIS curriculums were reviewed thoroughly. For this study, the Kantian cognitive model was adopted as a basis of modeling principle. The result shows that modeling ability has been the core competence of IS people in the field of MIS. The applicability of a modeling principle is also verified in establishing the identity of MIS and developing a normative MIS curriculum. For the MIS field to thrive as an independent academic field and research discipline, it is believed to be imperative for the discipline to have a unique educational goals distinguished from both other management areas, and sub-fields of computer science.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2015년도 춘계 학술논문 발표대회
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• pp.154-155
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• 2015

This study was to review the basic characteristics in order to evaluate field application of the emergency road repair materials for development of CAC(Calcium Aluminate Composite) usage. The experiment was conducted with two phases of field and laboratory conditions and the laboratory experiment consisted indoor and outdoor tests for compressive and flexural strength. In the result of an experiment, for the compressive strength test, the specimens that cured in the laboratory conditions were not satisfied the requirement of standards, while the specimens that cured in the field conditions were well satisfied with those. For flexural strength test, the result value was satisfied with the requirement on the standards only in outdoor curing condition of laboratory experiment. Based on these results, it is expected that the CAC can be used as an emergency road repair material for field conditions.

• 터널과지하공간
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• 제3권2호
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• pp.163-166
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• 1993

To improve the applicability of the Ho-Brown's empirical failure theory to field problems, transformation of failure coefficients was suggested in this study. This method was tested on the published data and good results were obtained. It seemed that this method be more reasonable than traditional method of modifying the coefficients by RMR or Q values.

• 한국도로학회:학술대회논문집
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• 한국도로학회 2001년도 학술발표회 논문집
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• pp.87-91
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• 2001

• 한국방재학회:학술대회논문집
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• 한국방재학회 2009년도 정기 학술발표대회
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• pp.167.2-167.2
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• 2009