• Journal of The Korean Digital Architecture Interior Association
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• v.6 no.2
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• pp.55-63
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• 2006

The purpose of this study is to analyze the problems in assumption of the distinguished behaviors of hospitalized dementia patients- which can be easily emerged and recognized in senile dementia patients and their distinctive behavior characters in different physical environment per person. Furthermore, it is to suggest a fundamental data to improve physical environment of the different facilities and the design guidelines for reconstruction in terms of the new and therapeutic function of the dementia specialized department. For planning on the dementia specialized hospital, considerablely, security and safety, comfortableness, personal identification of the facility, emotional stability and the proper stimulation for the patients are emphasized according to the research on the frequent and major issues of the patients from their own dwelling place.

• Proceedings of the Korea Information Processing Society Conference
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• 2002.04a
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• pp.273-276
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• 2002

본 논문에서는 Physical Modeling을 이용해 단소의 음을 합성해 내는 방법에 대해 연구 하였다. 현재 관 악기의 음 합성 방법은, Julius O. Smith가 제안한 digital waveguide모델을 근간으로 하여 여러 악기들의 소리를 합성하는 방법에 대해 연구 되고 있다. 본 논문에서는 digital waveguide모델을 사용하여 단소 관속의 움직임, two-port scattering model을 이용한 관속과 음공 사이의 공기의 움직임에 대해 기술하였고, reflection filter를 사용하여 단소 끝부분에서의 신호의 변화에 대해 연구 하였으며, 끝으로 관 내벽과 공기의 마찰에 의한 신호 손실에 대한 연구를 기술 하였다. 위에서 언급한 내용들의 연구결과를 토대로 음을 합성한 결과 실제 단소의 소리와 유사한 소리를 얻어 낼 수 있었다.

• The Journal of the Acoustical Society of Korea
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• v.23 no.7
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• pp.521-531
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• 2004

In this paper we developed the Physical modeling of the Sanio Gayageum using the improved digital waveguide theory. The frequency characteristics of the Gayageum body is implemented by an inverse filtering and the impulse response of the body. We obtained the synthesis sounds of the unit sound for the Gayageum using the simulation of the straight-line fits by the changes of the fundamental frequencies depending on the Amok location. Finally. we could obtain the virtual Sanio Gayageum sounds similar to the actual Gayageum by tuning the Amok positions.

• Transactions of the Korean Society of Automotive Engineers
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• v.11 no.6
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• pp.118-126
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• 2003

Digital Manufacturing is a technology facilitating effective developments and agile productions of the product via digital computer models representing physical and logical schema and the behavior of the real manufacturing systems including manufacturing resources, environments and products. For the successful application of this technology, a digital factory as a well-designed and an integrated environment is essential. In this paper, we constructed the sophisticated digital factory of a Korean automotive company's body shop, and conducted precise simulations of unit cell, lines and the whole factory for the collision check, the production flow analysis and the off-line programming. We expect that this digital factory of the body shop helps us achieve great savings in time and cost for many manufacturing preparation activities of the new car development.

• Journal of Ship and Ocean Technology
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• v.8 no.4
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• pp.45-55
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• 2004

How to achieve engineering collaboration among diverse engineering activities is one of the key topics in manufacturing fields nowadays. The infrastructure for collaborative engineering is essential, and it can be realized by information technologies and intelligent engineering applications in digital environments. Digital Manufacturing is a technology to facilitate effective product developments and agile productions by computer models representing the physical and logical schema and the behavior of real manufacturing systems including products, processes and factories. A digital factory as a well-designed and integrated digital environment is incorporated in it. In this paper, digital manufacturing is recommended as a good strategy for collaborative engineering, especially in product developments and productions. By business process analysis and some case studies, we suggested sophisticated digital models are very useful to concurrent and collaborative engineering. It is expected that digital manufacturing is a very good strategy for achieving dramatic time and cost savings in many engineering activities of many manufacturing industries, including machinery, automotive and shipbuilding.

• Journal of the Semiconductor & Display Technology
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• v.23 no.1
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• pp.79-83
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• 2024

Digital Twin technology is rapidly transforming various industries by providing comprehensive virtual models that replicate physical objects or processes. In the context of agriculture, digital twin can be a game-changer. This technology can help in creating precise simulations of farming scenarios, thereby enabling farmers to make data-driven decisions and optimize farm operations. The potential benefits include improved crop yields, resource efficiency, and environmental sustainability. However, the implementation of digital twin technology in agriculture poses challenges, such as data management issues and the need for robust IoT infrastructure. Despite these hurdles, the future of digital twin in agriculture looks promising, with ongoing research and developments aimed at overcoming these obstacles.

• Journal of Digital Convergence
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• v.16 no.7
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• pp.345-355
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• 2018

The purpose of this study was to investigate the convergence factors affecting of physical activity level on hemodialysis patients' depression, health-related quality of life and sleep disorders. The participants were 193 hemodialysis patients undergoing hemodialysis in five hospitals in two cities. Data were analyzed by technical statistics, correlation and hierarchical regression. The results showed that depression and physical activity were negatively correlated (r = -.259, p <.01), and physical and mental health related quality of life and physical activity correlated positively (R = .273, p <.01, r = .186, p <.01), respectively. Hierarchical regression analysis showed that the higher the quality of life related to physical health, the higher the level of physical activity of hemodialysis patients (${\beta}=.22$, p <.01). Therefore, it is required to develop an intervention program to improve health-related quality of life by improving the physical activity of hemodialysis patients.

• Korean journal of communication and information
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• v.36
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• pp.78-108
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• 2006

This study examines the digital divide, one of the main issues in digital media environment, in relation with the digital literacy on the perspective of audience welfare. The study explores the current state of audience welfare policy with regard to the issue of digital divide which can be seen as the dark side of this flourishing digital technology society. The barriers and enablers of the digital divide are discussed with the question of how these factors are related with the digital literacy competence of audience. It has been criticized that both the research efforts and the policy implementations on the digital divide had been set within the limitation of physical access to the digital equipment and technology. Recent studies suggested that the digital divide should be viewed in dynamic interaction of a variety of factors such as psychological dispositions, inner attitudes toward digital media, competence and ability of audiences as well as socio-economic status of individuals. Despite the recent inclusive discussion, however, the role of digital literacy in the digital divide remains unexplored. It should be noted that the question of access is not just to do with equipment, but with skills and knowledge that are required to use equipment. This notion suggests an important implication for the digital divide policy establishment. This study proposes a two-stage solution for reducing the digital divide, in which the first stage focuses on physical access and technology education and the second stage on the digital literacy education.

• Archives of design research
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• v.18 no.1 s.59
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• pp.115-124
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• 2005

Fast developing digital technology is Having an enormous societal influence, creating a porous new world without boundaries. This phenomenon applies to a whole range of fields, including culture, politics and even our daily lives. Urban Street cannot be excluded from this world-transforming change. Digital technology is changing the physical structure, growing patterns, function and role of the Urban Street. As a result, Urban Street should now be freeing themselves from the old-world functionalism, which has been pursued uniformly under the names of rationality and efficiency. We have, then, to think about the culture of the Digital Urban Street,'that is, the digital life style, which is tangibly generated in the concrete city space, and which must be prepared for further digitalization. This paper argues that the street must be understood as a communications centre, because digital technology has created a new communications style. Also, this paper focuses on how the physical environment of Urban Street will evolve with regard to both function and appearance. In conclusion, studying the ubiquitous space, it also looks at how existing urban planning and space design should lead to the further development of Urban Street using digital technology, as well as to the role this technology will have in the future.

• Journal of KIBIM
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• v.9 no.4
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• pp.51-61
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• 2019

In the general manufacturing sector, prototyping used to reduce the risks that can arise with new conceptual products. However, in AEC area, it does not mass-produce a building, so the prototype itself becomes a building. Therefore, it is challenging to have prototyping of the same scale as the real thing, and the prototyping process in architecture is very inefficient. The prototyping process in the design stage typically assumes making a scaled model, partial model, or digital model. However, it is difficult for these models to correspond to the actual building and the environment of time and space such as scale, material, environment, load, physical properties and deformation, corrosion, etc., unlike the actual building. When using the digital twin concept in the prototyping process, it is possible to measure performance from the design stage to the operation stage. The digital twin was found by a method for monitoring based on physical twins and real-time linkage in the operation stage. Therefore, if the digital twin concept is applied at the design stage, it is possible to predict performance using not only current performance but also history information using real-time information. In order to apply the digital twin concept to the prototyping design process, we analyze the theoretical considerations and the prototyping design process of the digital twin, analyze the cases and research results where the prototyping design was applied, Provide an applied prototyping design process. The proposed process is tested through a pilot project and analyzed for potential use.