• Archives of design research
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• v.14 no.4
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• pp.137-146
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• 2001

The purpose of the study is to explore and understand the product development through the theory of evolution. For the purpose of the study, an evolution mechanism was set up in which the products were applied with. The results showed three distinguishable types of product evolution 'the evolution of functions','the evolution of forms'and 'the evolution of symbols what the products represent'. In order to answer the research questions, , , , the research was carried out in three ways: firstly, some ideas of product evolution were looked closely through existing researches; secondly, the study explored the idea of evolution mechanism being a natural process like an organic system; finally by applying various products with the evolution mechanism, different patterns of product evolution were classified. The results of the study can be summarised as follows: ${\bullet}$ The evolution mechanism in this study can be defined as an 'organic system'that consists of the causes of evolution'(based on the needs and the willingness to have pleasure), 'the point of evolving'(based on a degree of imperfection) and 'the motive of evolution'(based on the readiness to make profit). ${\bullet}$ The evolution mechanism seems to suggest three different patterns in product evolution,'the evolution of functions', 'the evolution of forms' and 'the evolution of symbols'

• The Journal of the Convergence on Culture Technology
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• v.7 no.2
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• pp.333-338
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• 2021

Development of 5th generation mobile telecommunication technology is visualizing ideal hyper-connected social information and communication technology (ICT). In particular, virtual reality (VR) technology is at the starting point for new expansion and leaps. This work defines virtual reality as media in this context and collects and analyzes discourse on its scalability around space and communication theory. We first elaborated the concept, starting with the early discussions of the virtual reality concept in 1990, and discussed the relationship between the physical world and digital information, expression and interaction immersion as a medium, simulation, art creation theory, and finally evolutionary development. In conclusion, beyond the discourse on the technology of virtual reality, academic subjects were required to have theoretical frameworks on cognitive science, neuroscience, social science, and humanities issues (ethics, personality, etc.) for the development and evolution of virtual reality. In other words, it is time for the evolution of virtual reality to be discussed, which can be moved beyond.

• Proceedings of the Korean Information Science Society Conference
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• 2010.06c
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• pp.305-310
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• 2010

최근 세계화의 흐름 속에 경제영역에서 더 높은 수준의 국가간 협력과 공조를 필요로 하는 실정이다. 하지만 복잡한 이해관계 속에서 적절한 무역 전략을 취하는 것은 쉬운 일이 아니다. 본 논문에서는 무역정책의 방향을 수립함에 참고하기 위한 방법으로, 국제 무역의 주체가 되는 국가를 진화 에이전트로 구성하고 이차원 공간상에 배치시켜 국제무역현상을 모델링 하였다. 국가 에이전트는 다양한 속성을 기반으로 구성되며, 진화 연산을 적용하여 무역 전략을 국제무역정세에 따라 동적으로 변화하도록 하였다. 국제무역에서 중요한 요인인 국가협력관계와 상대적 무역정책에서 파생되는 무역이익은 게임이론을 적용하여 모델링하였다. 다수의 실험을 통하여 본 모델링 방법이 실제 무역 현상을 재현함을 확인하였으며, 특히 상대 국가별 발전 정도에 따라 정책을 변화시키는 것이 자국의 이익을 추구에 중요한 요소임을 확인하였다.

• Journal of the Korean Institute of Intelligent Systems
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• v.4 no.3
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• pp.3-13
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• 1994

본 논문에서는 진화 프로그래밍을 이용한 다기준 퍼지제어(MFC : Multicriteria Fuzzy Control)를 제안한다. MFC의 기본적인 아이디어는 출력응답의 속성을 분석하여 기존의 퍼지 제어에 퍼지 척도와 퍼지 적분 이론을 적용한 것이다. 퍼지 적분 평가를 위해서 rise time, overshoot, settling time의 세가지 속성이 사용된다. MFC를 통해서 이 세가지 속성을 조정할 수 있다. 진화 프로그래밍은 원하는 조정 특성을 갖도록 MFC의 퍼지 척도를 최적화한다. 모의 실험을 통해서 제안된 방법이 기존의 퍼지 제어보다 우수함을 보인다.

• The Transactions of the Korean Institute of Power Electronics
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• v.7 no.4
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• pp.384-394
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• 2002

In this paper, a new control strategy is proposed to improve the quality of the welding products. The conventional nonlinear power control system of spot welders is linearized using nonlinear feedback linearization technique based on differential geometry theory. An evolution strategy(ES) geometry is used to find optimal gain of PI controllers. It tries to find out the optimal control parameters by imitating the natural evolution. Some Simulation and experimental results show that the proposed variable power control system using ES algorithm has better dynamic performances than the conventional one.

• Korean Journal of Psychosomatic Medicine
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• v.30 no.2
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• pp.99-111
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• 2022

Akey factor in evolution is reproduction, which is also a major concern in medicine. Evolutionists have proposed many theories and hypotheses to explain the low fertility rates of modern industrial societies, which are contrary to maximization of biological fitness. Given that childbirth is the most significant factor affecting reproductive fitness, it is likely that a variety of psychological modules related to childbirth behavior and intention evolved over time. Several evolutionary psychological modules have been proposed in relation to reproduction, including sexual desire, status-seeking, a need for nurturing, and the desire for children. Previously adaptive psychological modules may now be expressed maladaptively due to the discrepancy between the Environment of Evolutionary Adaptedness (EEA) and the environment of modern industrial society. Several evolutionary ecological factors influence childbirth intention in modern society, including individual personality factors, childhood life history experiences, and socioecological factors throughout reproductive life. By focusing on mental, social, and ecological factors, this review examines several hypothetical models relating to evolutionary psychological factors and childbirth decisions in modern industrial society, as well as a possible explanation for the low birth rate.

• Proceedings of the KSME Conference
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• 2005.11a
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• pp.262.1-262.1
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• 2005

• Korean Architects
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• s.485
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• pp.75-77
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• 2009

• 한국과학기술학회:학술대회논문집
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• 2002.06a
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• pp.24-35
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• 2002

• Journal of the Korean Society of Clothing and Textiles
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• v.30 no.12 s.159
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• pp.1661-1671
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• 2006

Many researchers have studied the process of retail evolution in the United States and in Europe. Although extensively studied(e.g., Agergaard, Olsen & Allpass, 1970; Oren, 1989), used in conceptual work(e.g., Cist, 1968), and applied as foundation in empirical work(e.g., HcNair, 1958), some limitations exist as follows: inability to cover multiple types of retail institutions and limited quantification. The purpose of this study is to build a conceptual framework combining existing retail evolution theories to overcome existing limitations. Data collection and analysis followed a qualitative research design, specifically a grounded theory type of design with a constant comparative analysis method. As a result of the study, a conceptual framework was built by synthesizing aspects of retail evolution theories and showed retail institution types in a change process.