• 한국건설관리학회논문집
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• 제3권2호
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• pp.87-98
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• 2002

정부는 선진외국을 중심으로 진행되고 있는 CALS의 개념을 국내 건설산업에 적용하여 건설산업의 선진화 및 국가경쟁력을 확보하고자 건설CALS의 핵심부분인 CITIS체계 개발에 노력을 기울이고 있다. 그러나, 아직 가상헙업공간으로서의 기능이 부족하고 현장 적용을 통한 기능개선 띤 기반확산 노력이 미흡한 실정이다. 본 연구의 목적은 건설 CITIS체계의 지속적인 적용을 위한 기반조성 띤 성능개선을 위한 시도로서 프로젝트 참가자간의 정보교류 및 협업을 지원하기 위한 가상기업 개념을 정립하고 이에 기반한 CITIS 개선모델을 제안하는데 있다. 이를 위해, 일선 도로건설현장을 대상으로 실증시험 사업을 수행하여 건설 CITIS의 효과를 검증하고 가상기업으로서의 CITIS가 갖추어아 할 시스템 성능개선 방안을 도출하였다.

• 한국멀티미디어학회논문지
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• 제7권4호
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• pp.550-558
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• 2004

3차원 분산가상환경의 확장성에 대한 연구는 전역적인 공간분할을 통한 관심영역(AOI)의 설정에 초점을 맞추어왔으며 참여자들의 밀집화로 인한 AOI 내의 혼잡성에 대한 부분은 거의 다루어지지 않았다고 할 수 있다. 실제적으로 AOI의 혼잡성은 네트워크 대역폭 또는 렌더링시간 등 시스템 자원을 고갈시키고 참여자간 정상적인 상호작용의 수행을 어렵게 하여 시스템의 확장성과 밀접한 관련이 있음을 알 수 있다. 본 연구에서는 AOI의 혼잡성을 확장가능한 DVE에서 해결되어야 할 문제점으로 정의하고 이에 대한 효과적인 제어메커니즘으로 혼잡도 측정 및 조절모델을 제시하고자 한다. 제안된 모델은 궁극적으로 AOI 내에서 참여자 집단의 고밀도화로 인한 시스템 자원의 고갈방지와 안정적인 상호작용성의 유지를 목표로 하고 있다. 제안된 모델의 성능평가를 위하여 AOI 혼잡도에 동적으로 반응하는 자원비용모델을 정의하여 기존 모델과의 비교 실험을ㆍ수행하였다.

• 한국주거학회논문집
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• 제25권1호
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• pp.41-50
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• 2014

Architectural & Interior design communication is a process of exchanging information between architects and other professionals, clients, and prospectus users, and a design medium is a means of communication. Using non-immersive, conventional media, it is challenging for architects communicate physical details and users' activities in not yet built three-dimensional buildings to others. Recent advances online, Multi-User Virtual Environments (MUVEs) allow architects and other professionals to experience a virtually constructed building together using anthropomorphic avatars. In addition, MUVEs also enable them to be aware of the presence and activity of each other. Previous studies suggest that the aforementioned characteristics of MUVEs may facilitate communication between architects and others. But these are focused on communication in controlled experimental conditions. This paper discusses the ways in which MUVEs are applied for authentic and long-term collaboration, design studio, and cultural heritage reconstruction projects, produced by digital design group at the UC Berkeley and the Technion-Israel Institute of Technology, and analyzes the influences of MUVEs on those projects. MUVEs helped more precise communication between architects, electronic engineers, and medical staffs, who are collaborating for developing pioneering technology for hospitals. In design studios, MUVEs allowed students to experience other students' design outputs, and thus helped them share ideas mutually. In addition, in cultural heritage reconstruction projects, MUVEs were used for communicating with historians and residents in order to collect evidence. Based on this study, we propose that MUVEs have strong potential for enhancing the communication between architects and other professionals.

• 실천공학교육논문지
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• 제14권1호
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• pp.91-97
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• 2022

핵심적인 미래역량(비판적 사고, 의사소통, 협업, 창의성) 개발을 위한 대표적인 교육방법으로 문제중심 학습법(PBL, problem based learning)이 주목받으며 대학에서의 적용이 확산되고 있다. PBL 수업의 중요한 특징 두 가지는 '팀원들과의 협업'과 '상호작용에 기반한 참여형, 자기주도적 학습'이다. 최근 코로나19 팬데믹이 장기화 됨에 따라 비대면 원격수업이 대학교육에서 임시방편이 아닌 필수요소가 되었고, 시공간 제약에 의해 앞서 언급한 두 가지 특징을 충족시키기 어렵다는 한계점에 부딪혔다. 본 논문에서는 기존에 H대학에서 비대면으로 운영했던 PBL 강좌 사례에 대한 한계점을 분석하고, 메타버스 가상공간에서 이루어지는 개선된 PBL 수업 방식을 상세하게 설계하였다. 제안하는 메타버스 활용 PBL 수업에서는 팀에서 진행한 연구 내용들을 담은 자료(이미지, pdf, 동영상 파일 등)를 3차원 가상공간에 갤러리 형태로 자유롭게 꾸미고 전시할 수 있어서 팀원들의 적극적인 참여를 유도할 수 있다. 또한 갤러리를 팀원들의 프로젝트 협업 공간으로 활용할 수도 있고, 최종 프리젠테이션 장소로 활용할 수도 있다. 이 수업 방식은 가능한 빠른 시일 내에 동일 PBL 수업에 적용하여 효과성을 분석하고 개선점을 도출할 것이다.

• 패션비즈니스
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• 제27권1호
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• pp.110-125
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• 2023

Virtual idol groups are a product of changes in cultural content and development of digital technology. The purpose of this study is to derive the characteristics of technical expression and fashion of virtual idol groups of Korean entertainment companies, and the significance of this study is to provide basic data for creating a new content business model for virtual idol groups. The research method of this study consisted of literature research and case analysis. Korean virtual idol groups 'K/DA', 'Aespa', and 'Eternity', which show the evolved business model of the entertainment industry through rapid advances in digital technology, were selected as the subject of case analysis for this study, and newspaper articles were searched by keywords and analyzed. As a result of the study, the technical expressions shown in Korean virtual idol groups were 'implementation of realistic content through interaction technology', 'delicate motion expression through motion capture technology', and 'convergence of information between the real world and virtual world through AR technology', 'provision of experience similar to reality by VR technology' and 'formation of cultural contents by Deep Real technology' were deriven. In addition, the characteristics of the Korean virtual guide idol group's fashion are 'marketing strategy through collaboration with fashion items', 'giving recognition as a digital fashion icon of real existence', 'creating a sensuous image as a fashion brand ambassador' and 'fashion style expression of the Z generation's sensibility'.

• 대한기계학회논문집A
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• 제25권10호
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• pp.1627-1635
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• 2001

Virtual manufacturing is a technology facilitating effective development and agile manufacturing of products via sophisticated computer models representing physical and logical schema and behavior of real manufacturing systems including manufacturing resources, environments, and products. For the successful application of this technology, a virtual plant as a well-designed and integrated environment is essential fur sharing information and engineering collaboration among diverse engineering activities. The systematic approaches and effective methods for construction and application of a virtual plant are proposed in this paper, such as a 3-D CAD modeling, cell and line simulations, databases and some information technologies. Measuring and 3-D CAD modeling technologies of many equipments, facilities and structures of the building are developed, and effective information management system managing CAD models, related files and data is implemented in WWW environments. Finally, precise simulations of unit cell lines and the whole plant are performed. For the beginning of implementing a Virtual Automotive Plant, the Virtual Plant fur the Body Shop of a Korean automotive company is constructed and implemented. We could obtain the benefit of savings in time and cost in many manufacturing preparation activities in the new car development processes.

• 한국CDE학회논문집
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• 제16권5호
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• pp.370-379
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• 2011

The increasing complexity of complex buildings, such as high-rise buildings and underground subway stations, presents new challenges to firefighters. In a fire in complex buildings, the importance of the collaboration between firefighters is clear. The increased demand on firefighter training for such environment is now evident. Due to cost, time, and safety issues, it is impossible to experience a real fire in such environments for training. In addition, the use of real fire for training does not enable repeatable training and the evaluation of the training is difficult. We developed a team-based firefighter training simulator for complex buildings using the virtual reality technology. It provides the training and evaluation of firefighting and mission-based team training. To model real fire phenomena in virtual space, a numerical analysis method based on fire dynamics is used. To achieve an immersive virtual environment, an augmented reality technique for the compensation of real world image and a haptic technique for heat experience are adopted. The developed training simulator can help the firefighter to respond to large and complex firefighting scenarios, while maintaining the safety of the trainees.

• 정보기술과데이타베이스저널
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• 제8권1호
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• pp.1-11
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• 2001

More and more cyber shopping malls, one of the new promising Internet businesses of today, are opening business everyday. And instead of the ordinary image and text type of product display, buyers can now view products from any viewpoint through 3D images and also get more detail information on the product more easily thanks to the new VP technology, visual tools, and statecharts. However the currently used virtual prototyping supporting method does not consist of any database support for sharing the data from different virtual prototype developments and reusing the data in developing other prototypes. And in cases of custom order products, there is no linkage with the virtual product database that enables buyers in cyberspace such as cybermalls to try out the products before purchasing. This paper is purported for being applied as the basis for planning the construction of a complete CRM method applied cyber shopping mall that can accommodata all the demands and requests from customers. And the database supporting VP framework that supports data sharing and collaboration between virtual prototype developers and manufacturing custom order products is suggested for this purpose.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제9권12호
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• pp.4776-4798
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• 2015

The location selection of virtual machines in distributed cloud is difficult because of the physical resource distribution, allocation of multi-dimensional resources, and resource unit cost. In this study, we propose a multi-object virtual machine location selection algorithm (MOVMLSA) based on group information, doubly linked list structure and genetic algorithm. On the basis of the collaboration of multi-dimensional resources, a fitness function is designed using fuzzy logic control parameters, which can be used to optimize search space solutions. In the location selection process, an orderly information code based on group and resource information can be generated by adopting the memory mechanism of biological immune systems. This approach, along with the dominant elite strategy, enables the updating of the population. The tournament selection method is used to optimize the operator mechanisms of the single-point crossover and X-point mutation during the population selection. Such a method can be used to obtain an optimal solution for the rapid location selection of virtual machines. Experimental results show that the proposed algorithm is effective in reducing the number of used physical machines and in improving the resource utilization of physical machines. The algorithm improves the utilization degree of multi-dimensional resource synergy and reduces the comprehensive unit cost of resources.

• ETRI Journal
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• 제21권1호
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• pp.55-71
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• 1999

Recently, the increased handling of on-line standards information has emerged as an important feature of information and communications technology (ICT) standardization. In order to meet market needs for on-time standards deployment, most standards organizations are actively seeking more efficient ways of standardization using electronic means in order to accelerate the standards making process. This paper suggests a virtual standard development environment designed for standards developers to carry out their standards-related activities on-line. In this paper, we outline a conceptual model of a concurrent standardization process and describe the design and implementation of an Extranet-based network system called standards information cooperative network (SICN). The system was created with a view to fostering faster standards development with functionalities such as a virtual management of networked standards developers, collaboration support tools, a workflow-based electronic signature system, and dynamic links for ready retrieval of standards information stored in a database. We conclude this paper with an introduction to the concept of a virtual standards development organization (VSDO) that supports all the features needed by the relevant standards making bodies to carry out their activities in a dynamic on-line environment.