• Proceedings of the KIEE Conference
• /
• 2007.07a
• /
• pp.1825-1826
• /
• 2007

세계적으로 현장업무는 현장에서 접수하여 즉시 처리하는 방식으로 패러다임이 변화하고 있다. 현재 전력업무의 대표적인 모바일 시스템으로 기동보수/순시점검 모바일시스템이 시범운영되고 있으나, 자동처리 기능개선, 네비게이션 기능개발 등 자동화 및 지능화 기술개발이 필요하며 작업차량의 위치와 상태와 무관하게 운영되고 있는 업무들을 통합적으로 처리할 수 있는 모바일시스템 개발이 필요하다. 따라서 본 논문에서는 효율적인 배전운영 현장업무 처리를 위한 통합형 모바일시스템을 설계한다. 모바일 서버, 무선통신망, 단말기용 모바일시스템에 대한 전반적인 시스템의 구성방안 설명하고, 핵심적인 요소기술 개발사항과 방법을 제시한다.

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.22 no.5
• /
• pp.444-453
• /
• 2016

In this study, I suggested 'Mission command' as the on-scene commander's leadership intended to save people's lives quickly and safely when occured marine accident. First, I considered the concepts and limitations, efforts to introduce and settle the mission command, discussed why the introduction of mission command for Korea Coast Guard, the scope and specific way when applied. Korea Coast Guard must apply the Mission command as the on-scene commander's leadership to achieve efficient rescue work at the scene of an accident, even for incidents that can-not be foreseen. However, mission command cannot be established overnight: long-term, systematic efforts to stably develop mission command at the organizational level are required. We will strive to apply mission command across all aspects of the system, including education, training, personnel, and procedures, equipping each component with the basic requirements for mission command.

• KSCE Journal of Civil and Environmental Engineering Research
• /
• v.31 no.5C
• /
• pp.187-202
• /
• 2011

In this Application Study based on the result of the Basic Study, the field test was performed to compare the quality of Ready-mixed shotcrete with that of the existing field mix shotcrete, and the long-term durability was evaluated as tunnel supporting. The plant manufacturing system was also designed to produce standardization materials, and the prototype products were produced with that system. The All-in-one silo mixer was designed and the field construction system using the All-in-one silo mixer was proposed to be most effectively applied Ready-mixed Shotcrete in construction fields. And the application of Ready-mixed Shotcrete was confirmed that more superior to the field mix Shotcrete by evaluating the Constructability and Economics.

• Journal of Digital Convergence
• /
• v.13 no.8
• /
• pp.465-472
• /
• 2015

The virtual reality technology is currently used classifying functional types such as the observation operation type, the experimental activity type, the learning information type, the field problem-solving type, and other different types, based on the media's characteristics implementing 3D form of multi-sensory information. Using Virtual Reality, the restoration of the 'Doksu Palace' has been grafted onto J. Keller's ARCS model, suggesting a field restoration concept that reenacts the lives of the people that had been in the field with the cultural heritage and history based on a scenario based scene direction. This paper also summarizes 3 different types of implementation of the field restoration assorting multi-scene direction. Certain limitations exist, due to the fact that a completed prototype hasn't been suggested and that a detailed notion of the housing and 3D audio connection has been omitted.

• Journal of the Korean Geosynthetics Society
• /
• v.10 no.1
• /
• pp.1-8
• /
• 2011

The problems like a deterioration of loading bearing capacity, an exaggeration of settlement and lateral deformation are able to be generated, meanwhile structures are built in soft ground. Top-Base method is belonged to a rigidity mat foundation method which is used to surface treatment of soft ground. This method makes an effect to increase the bearing capacity of foundation using friction force, and prevent the differential settlement. Further more, the In-Situ Top-Base method has advantages in the phase of economic effect by reduction of the construction cost and offers an expediency on construction comparing with precast products. This paper presents the way of the estimation of bearing capacity for In-Situ Top-Base method through field plate load test in soft ground. It utilizes the results to a future design by analyzing the properties in the existing study and designs through these analysis and calculating the top-base method's reasonable range.

• Journal of the Korean Geosynthetics Society
• /
• v.19 no.4
• /
• pp.95-109
• /
• 2020

In this study, a total of six site cases were reviewed to assess the site applicability of portable dynamic cone penetration test (DCPT) by identifying the cause of damage to the damaged reinforced earth wall using portable dynamic cone penetration test. An improved dynamic concrete penetration tester was used at the site to enable ground surveys of more than 6 meters. The test results were compared with the results of the standard penetration test (SPT) and the correlation was analyzed. Through the analysis of various field application cases, it was found that portable dynamic cone penetration test was very convenient to apply at the site of the damaged reinforced earth wall, and DCPT could play a major role in identifying the cause of damage and verifying stability of the retaining wall by continuously identifying the ground strength. In addition, it was found that the results of the dynamic cone penetration test and the standard penetration test showed a correlation of N≒(1/3~2/3)·Nd in sandy soil.

• Proceedings of the Korean Society for Environmental Edudation Conference
• /
• 2001.11a
• /
• pp.23-24
• /
• 2001

• Proceedings of the Korean Society for Agricultural Machinery Conference
• /
• 1996.06a
• /
• pp.17-21
• /
• 1996

• Journal of the Korea Institute of Building Construction
• /
• v.20 no.5
• /
• pp.449-457
• /
• 2020

Due to the improvement of living standards and avoidance of the 3D industry, it is difficult to find young and competent domestic workers at construction sites, and most foreign workers are contributing to the replacement, but the quality is still deteriorating due to lack of skilled workers and aging. Precast method is a method that make members in factory and assembles them on site, which can be expected to improve labor force and quality. This study is intended to provide basic data for the development of hang-type PC beams that can be applied to the determination of the field application of developed PC beams. The U-type connecting material is installed on both ends of the hang-up PC beam, and the role of the U-type connecting material is very important because it is a simple construction method through the U-type connecting material. In addition, the performance of the U-type connecting material will determine the performance of the hang-type PC beam as the final destruction occurs in the hang-type PC beam. The material properties of U-type connecting material were identified through structural experiments, and the end test corresponding to the partial experiment was conducted based on the material test results identified. Finally, the final design value of PC beams was proposed through structural experiments for application to the site.

• Geotechnical Engineering
• /
• v.14 no.5
• /
• pp.111-128
• /
• 1998

An experimental study, which included four 305mm-diameter test shafts, one reference shaft with standard design and three test shafts with isolation tubes, is described. The soil was also soil heave and shrinkage that occur during suction changes at the field site. The test shafts were monitored for a period of about 18 months. Maximum ground movements exceeding 35mm were observed. Movements of only 1 to 2mm were observed in the test shafts with isolation tubes, while movements of 4 to 5mm were observed in the reference shaft. A simple computing model was developed to predict, based on suction changes, the maximum amount of ground heave. Relationship among suction. total stress, and volumetric strain was abtained in the laborstory. This relationship, used as inputs to the predictive model, enabled the computation of the maximum ground heave.