• Proceedings of the Korea Water Resources Association Conference
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• 2005.09b
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• pp.1321-1322
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• 2005

• Journal of the Korea Institute of Information and Communication Engineering
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• v.21 no.12
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• pp.2325-2332
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• 2017

Consulting projects such as diagnosis of vulnerabilities of major information and telecommunication infrastructure are increasing, mandatory public information infrastructure assessment (PIA) for public institutions and ISMS (Information Security Management System) The demand for information protection consulting is continuously increasing as the field obeys the law, but the lack of information security consultant is not improving. One reason is that information security consultants are not being developed to meet the increasing demand for information protection consulting. In this paper, we present the case of information protection consulting as a scenario for studying and educating the duty of information security consultant by studying overseas case and domestic case based on standardization and standardization. We propose a problem-based learning (PBL) training method. In addition, we analyze the effectiveness of the PBL - based learning method.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.7 no.3
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• pp.39-44
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• 2012

The purpose of this study is verify the effects of management consultant on management performance for technical consulting through 235 small and medium sized enterprises in korea. Management effects has been applied to the industry for the strengthening the competitiveness regardless of the management consultant. however, it has been argued that the applied to the small and medium sized enterprises. The reliance analysis for the measurement material on the questionnaire was verified by Cronbach's alpha coefficient. ability of the management consultant, performance of the management consultant, conditions of the Enterprise were verified through the structural analysis by using SPSS statistic package. The influence evaluation among the groups was evaluated by the structure.

• Journal of Korean Tunnelling and Underground Space Association
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• v.15 no.4
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• pp.415-429
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• 2013

Performance-based design is becoming a key word for structure design in architectural and civil engineering spheres. In this paper, the need of the performance-based design, especially for tunnels, was enhanced by case study on the largely deformed cut-and-cover arch tunnel built by the prescribed design. In addition, this paper introduces effective method of subdivision on tunnel performance to help field engineer's comprehension. Case study dealing with the issue of typical backwards problem in geotechnical engineering was examined. First of all, the outline of the damaged culvert as well as the surrounding embankment is in detail described. The background, together with the cause of damage, is discussed based on the results of site investigation. Secondly, it was attempted to elucidate the deformation mechanism of the embankment by means of numerical analysis, and the countermeasures are proposed. Finally, the stability of the embankment with the countermeasures was evaluated.

• Proceedings of the Korean Geotechical Society Conference
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• 2009.09a
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• pp.1324-1329
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• 2009

Needs for underground space development and utilization have been increasing in urban area. The conventional strutting method in excavation is effective to restrain the ground movements and displacements of earth structures but inefficient for workers because of small working space. The conventional earth reinforcement methods such as earth-anchor and soil-nailing also have limitation to apply in urban area due to threats to stability of adjacent buildings around excavation boundaries. Recently, many types of earth retaining structures are being developed to overcome disadvantages of conventional excavation methods in urban area. In this study, a series of numerical analyses were performed with MIDAS GTS, geotechnical analysis program and MIDAS Civil, structural analysis design program to evaluate behavior and stability of the new type of non-supporting earth retaining structure, called Temporary Tower System (TTS), consisting of tower truss structures with much economical and spatial advantage.

• Proceedings of the KIEE Conference
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• 2005.07e
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• pp.6-11
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• 2005

디지털 경제시대의 웰빙주거문화생활을 위한 욕구 충족추세에 따라서 정보통신서비스는 광대역화 및 이동성을 지향하며 발전하고 있으며, 서비스 및 기기의 융합이 가속화 될 것으로 전망되고 있다. 디지털기술에 의한 서비스, 단말기, 네트워크등 융합의 시발점은 가정이며, 가정에서 정보를 편안하게 이용하고, 즐길 수 있도록 제공하는 방법이 주거용 건물의 디지털 네트워크 구축기술이라 할 수 있다. 이와 같은 디지털 융합 패러다임에 의해, 전개되는 새로운 정보통신환경에 적극적으로 대응하기 위해서 정보통신부에서는 세계 최고의 IT 인프라 환경을 기반으로 국민의 삶의 질과 정보화의 혜택을 극대화 할 수 있도록 정보화촉진전략을 추진한 결과, 수요자 정보인프라는 기존 정부정책에서 일부 소외되어 왔음을 보여준다. 이제부터는 디지털경제의 공급측면의 인프라 수준만큼 수요측면의 양적 질적 성장을 끌어올리는 일만이 남아있다. 기술과 시장 변화는 무엇보다도 정부정책 및 규제의 변화를 필요로 한다. 따라서 디지털홈의 정보가전 기기간 상호운용성이 보장되는 표준화로 네트워크가 구축되어야 하며, 표준과 연계된 기술이 지속적으로 개발되어야 한다. 본 발표내용에서는 최근 발표된 정보통신부의 초고속정보통신 건물인중기준과 각 지방자치단체에서 실시하는 정보통신설비 사용전검사기준에 적합한지 여부에 관해 문제점을 검토 기술하였다.

• Structural Engineering and Mechanics
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• v.89 no.4
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• pp.335-347
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• 2024

This study pioneers the exploration of creep and shrinkage behavior in ambient-cured geopolymer concrete (GPC), a vital yet under-researched area in concrete technology. Focusing on the influence of sodium hydroxide (NaOH) solution concentration, the research utilizes low calcium fly ash (Class-F) and alkaline solutions to prepare two sets of GPC. The results show distinct patterns in compressive strength development and dry shrinkage reduction, with a 14 M NaOH solution demonstrating a 26.5% lower dry shrinkage than the 16 M solution. The creep behavior indicated a high initial strain within the first 7 days, significantly influenced by curing conditions and NaOH concentration. This study contributes to the existing knowledge by providing a deeper understanding of the time-dependent properties of GPC, which is crucial for optimizing its performance in structural applications.

• Structural Engineering and Mechanics
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• v.57 no.6
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• pp.1125-1142
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• 2016

Tunneling is one of the challenging tasks in civil engineering because it involves a variety of decision making and engineering judgment based on knowledge and experience. One of the challenges is to construct tunnels in risky areas under shallow overburden. In order to prevent the collapse of ceilings and walls of a large tunnels, in such conditions, either a sequential excavation method (SEM) or ground reinforcing method, or a combination of both, can be utilized. This research deals with the numerical modeling of L-profiles and pipe fore-poling pre-support systems in the adit tunnel in northwestern Iran. The first part of the adit tunnel has been drilled in alluvial material with very weak geotechnical parameters. Despite applying an SEM in constructing this tunnel, analyzing the results of numerical modeling done using FLAC3D, as well as observations during drilling, indicate the tunnel instability. To improve operational safety and to prevent collapse, pre-support systems, including pipe fore-poling and L-profiles were designed and implemented. The results of the numerical modeling coupled with monitoring during operation, as well as the results of instrumentation, indicate the efficacy of both these methods in tunnel collapse prevention. Moreover, the results of modeling using FLAC3D and SECTION BUILDER suggest a double angle with equal legs ($2L100{\times}100{\times}10mm$) in both box profile and tee array as an alternative section to pipe fore-poling system while neither $L80{\times}80{\times}8mm$ nor $2L80{\times}80{\times}8mm$ can sustain the axial and shear stresses exerted on pipe fore-poling system.

• Explosives and Blasting
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• v.13 no.2
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• pp.3-4
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• 1995

• Geotechnical Engineering
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• v.17 no.1
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• pp.66-67
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• 2001