• 한국도로학회논문집
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• 제9권1호
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• pp.57-67
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• 2007

최근 아스팔트 혼합물의 VMA 혹은 그 외 다른 체적요소의 기준값을 대체하기 위해 유효아스팔트 함량(film thickness)에 대해 논의되어 왔다. 이들 중 일부는 유효 아스팔트 함량의 기준값을 제안하였으며, 일부는 새로운 개념 또는 계산 방법을 포함하는 새로운 모델을 즉, 인덱스 모델(index model) 또는 가상 모델(virtual model)을 소개하였다. 각각의 모델은 아스팔트혼합물의 체적특성을 설명하는데 있어서 형상, 크기 등 골재의 체적특성을 정량화하는 방법을 이용한다. 본 연구에서는 인덱스 모델과 가상 모델의 장점을 결합한 개선된 가상 모델 (modified virtual model)을 제안하였다. 개선된 가상 모델을 기존의 두 가지 모델과 비교평가하기 위하여 DASR 개념에 근거하여 제작된 총 8개의 혼합물을 대상으로 IDT 시험과 APA 시험을 수행하였다. 시험 결과, 아스팔트 혼합물의 공용성과 유효 아스팔트 함량의 관계를 계산함에 있어서 본 연구에서 제안된 가상 모델은 기존의 모델들에 비해 더 적절함을 알 수 있었다.

• 한국주거학회논문집
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• 제19권6호
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• pp.55-62
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• 2008

In the construction field, there has been a recent and unprecedented increase in the research and development of modernized Korean traditional buildings, This is because, in today's modern society, the basic needs for survival have already been met and more people are now recognizing the importance of the identity of our unique culture. It is therefore timeous to consider not just how to preserve and use Korean traditional buildings, but also how to develop them into more industrialized and modernized buildings in a practical way. Recently, the direction has been focused on the industrialization of modernized Korean traditional buildings, including their evolution, and development, as well as on the numerous cases where construction has been delayed. In order to industrialize modernized Korean traditional buildings, we need to standardize their form and actively introduce current IT (Information Technology). In order to achieve this, it is absolutely necessary to change from the CADD (Computer Aided Design and Drafting) system to the BIM (Building Information Modeling) system, which reflects the concept of Virtual Architecture. Therefore, the aim of this study is to discuss the possibilities of using BIM system for industrialization of modernized Korean traditional buildings, extend the foundation of the form library, and develop an intelligent modeler. It is also necessary to exemplify a case model for modernized Korean traditional buildings to which BIM is applied.

• 국제학술발표논문집
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• The 8th International Conference on Construction Engineering and Project Management
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• pp.129-136
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• 2020

Augmented reality (AR) technology assists construction workers by superimposing additional virtual information onto their real worksite environments. Ideally, this provides them with a better understanding of their tasks and hence boosts task performance. However, the additional information that AR places in users' field of view could limit their ability to understand what is going on in their surroundings and to predict how conditions may change in the near future. AR-assisted systems on construction sites could therefore expose their users to safety risks due to disturbance from the system. Hence, it is important to understand how AR-assisted systems can block users' understanding of their immediate environments, and in turn, how worksite safety in the construction industry could be improved through better design of such systems. This preliminary research conducted a laboratory experiment that simulated rebar inspection tasks and compared the situational awareness of AR users against that of subjects using traditional paper-based inspection methods, as measured by the Situation Awareness Rating Technique. Based on the results, we discuss the safety impact of head-mounted AR-assisted displays on situational awareness during construction tasks.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2014년도 춘계학술대회
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• pp.475-478
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• 2014

본 논문은 건설 현장을 출입하는 작업자나 공사차량의 위치추적 및 인식 기법에 관한 것으로, 건설 현장에서 이동체의 위치추적은 안전사고 예방, 사고시 긴급 구난 등의 목적과 함께 불법 차량이 현장을 출입하면서 발생하는 자재 도난 및 사고를 방지하기 위함이다. 이를 실현하기 위해 정보통신기술(IT)을 현장에 접목시켜 건설 현장용 지원시스템을 구축하는 것은 매우 바람직한 융합 기술이다. 본 논문에서는 현장에 적합한 무선통신망을 이용해서 작업자 및 이동 차량의 연속적인 위치를 검출하는 기법을 제안 및 구현하였고, 가상 게이트웨이 구축 및 활용 기법을 제안하여 이동체의 건설 현장 진출입 여부를 판단하는데 활용하였다. 또한 다양한 현장 시험을 통해 제안된 기법들을 검증하였다.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2008년도 International Symposium on Remote Sensing
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• pp.137-140
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• 2008

Recently many areas require wide field of view images. Such as surveillance, virtual reality, navigation and 3D scene reconstruction. Conventional camera systems have a limited filed of view and provide partial information about the scene. however, omni directional vision system can overcome these disadvantages. Acquiring 360 degree panorama images requires expensive omni camera lens. In this study, 360 degree panorama image was tested using a low cost optical reflector which captures 360 degree panoramic views with single shot. This 360 degree panorama image system can be used with detailed positional information from GPS/INS. Through this study result, we show 360 degree panorama image is very effective tool for mobile monitoring system.

• 한국자동차공학회논문집
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• 제10권2호
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• pp.201-211
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• 2002

In this research, we are trying to research about hydraulic system design and vehicle dynamic modeling far the development of the tire roller. The reason why we would like develop it is that tire roller is one of the most useful machine for the road construction site and application other construction equipments. Here, we conceptualize the new hydraulic system and derive the equations of motion fur dynamic analysis and also investigate system modeling by using a DAQ board. We design the hydraulic circuit of steering and traction mechanism system. This design can be used to create virtual prototypes of construction equipment. So, we studied tire roller to integrate development technology. In system analysis, we formulate hydraulic traction system model and hydraulic steering system model. Also, we integrate DAQ system to acquire experimental results in real tire roller equipment.

• 한국군사과학기술학회지
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• 제26권1호
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• pp.91-101
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• 2023

Modeling and Simulation(M&S) technology has been widely used to solve constraints such as time, space, safety, and cost when we implement the same development and test environments as real warfare environments to develop, test, and evaluate weapon systems for the last several decades. The integration and test environments employed for development and test & evaluation are required to provide Live Virtual Construction(LVC) simulation environments for carrying out requirement analysis, design, integration, test and verification. Additionally, they are needed to provide computing environments which are possible to reconfigure computing resources and software components easily according to test configuration changes, and to run legacy software components independently on specific hardware and software environments. In this paper, an Integration Test and Simulation for Engagement Control(ITSEC) bed using a bare-metal virtualization mechanism is proposed to meet the above test and simulation requirements, and it is applied and implemented for an air missile defense system. The engagement simulation experiment results conducted on air and missile defense environments demonstrate that the proposed bed is a sufficiently cost-effective and feasible solution to reconfigure and expand application software and computing resources in accordance with various integration and test environments.

• 한국정보통신학회논문지
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• 제10권8호
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• pp.1359-1365
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• 2006

디지털 고구려는 안악 3호분 고구려 고분을사용자와 상호작용을 높이기 위해 게임요소를 가미하여 제작한 가상현실 환경이다. 디지털 고구려는 디지털 기술로 문화 유산 복원만이 아니라 일반 대중에게 특히 초등학생 어린이들에게 고구려인의 생활상과 문화를 이해하고 역사 학습을 도와주는데 중점을 두었다. 본 논문에서는 고구려의 고분과 벽화들을 복원하는 과정과 교육용 환경으로서 사용자들의 관심을 높이기 위해 게임의 형태를 취한 가상현실 환경 제작 과정, 그리고 개발과 시연을 통해 나타났던 개선점들과 몰입감을 증대시키기 위한 향후 연구방향에 대해 논한다.

• 정보통신설비학회논문지
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• 제10권4호
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• pp.143-147
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• 2011

The system using augmented reality can save the time and cost. It is verified in various fields under the possibility of a technology by solving unrealistic feeling in the virtual space. Therefore, augmented reality has a variety of the potential to be used. Generally, multimodal senses such as visual/auditory/tactile feed back are well known as a method for enhancing the immersion in case of interaction with virtual object. By adapting tangible object we can provide touch sensation to users. a 3D model of the same scale overlays the whole area of the tangible object; thus, the marker area is invisible. This contributes to enhancing immersive and natural images to users. Finally, multimodal feedback also creates better immersion. In this paper, sound feedback is considered. By further improving immersion learning augmented reality for children with the initial step learning content is presented. Augmented reality is in the intermediate stages between future world and real world as well as its adaptability is estimated more than virtual reality.

• 한국산학기술학회논문지
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• 제11권8호
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• pp.3083-3093
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• 2010

최근 3D파라메트릭 모델링 기법의 발달에 힘입어 비정형 건축 프로젝트가 증가하고 있다. 기존의 BIM 시뮬레이션 의사결정 지원시스템은 가상현실에서 구현되기 때문에 효율적이지 못했다. 이에 본 연구에서 효율적 의사결정지원을 위한 증강현실 기반 시뮬레이션 시스템인 "AR naviX"를 개발하였다. 이 시뮬레이션 시스템은 현장사진과 동영상자료 혹은 레이져 스캐닝 데이터를 활용하여 사용자가 보다 높은 현실감과 몰입감을 느낄 수 있도록 함으로써, 의사결정에 소비되는 시간을 단축시킨다.