• Proceedings of the Korean Institute of Intelligent Systems Conference
• /
• 2003.09b
• /
• pp.41-44
• /
• 2003

인공생명 기법의 대표적인 응용분야 중 하나인 창발적인 개체의 생성에서 유전자를 표현하는 방법으로 크게 방향성 그래프와 L-system의 두 가지 방법이 사용되고 있다. 두 가지 방법 모두 각기 좋은 특성이 있지만 L-system은 사용자에 의해 내부적인 파라메터로 정의되기 때문에 전체적인 실제 모양을 구조적으로 정의하기 어렵다 본 논문에서는 이런 단점을 극복하고자 실제 모양을 표현하는데 적절한 구조적 방향성 그래프를 도입하여 개체의 유전자를 구조적으로 표현함으로써 실제 개체와 유사한 모양을 창발적으로 생성하고, 이를 클러스터 대화형 유전자 알고리즘에 적용하여 사용자가 생성하고자 하는 실제 모양의 캐릭터를 자동으로 생성하게 하였다. 실험을 통해 2차원에서의 의자모양과 꽃 모양을 생성함으로써 다양한 구조의 창발적인 캐릭터를 생성할 수 있는 가능성을 제시했다.

• Journal of the Korea Furniture Society
• /
• v.10 no.1
• /
• pp.13-21
• /
• 1999

All chairs are uncomfortable in the long run and some chairs become uncomfortable more rapidly than others. In a particular chair, some people feel more uncomfortable than others. Comfort will depend upon the interaction of chair, user, and task characteristics. In this study, we intended to design a comfortable office chair by investigating anthropometric and biomechanical aspects for Koreans. We determine the design dimensions by analysis the anthropometric data. With these body parameters, we determined the design dimensions such as seat height, seat depth, seat width, seat backrest width, etc. This research, hopefully contributes to the development of ergonomic chair and improvement of the chair design technologies.

• Journal of the Korea Furniture Society
• /
• v.16 no.1
• /
• pp.81-89
• /
• 2005

A chair is a necessary tool in modern life and people spend a lot of time on it. But there Ere so many chairs which the human body size Is not considered that many users usually feel fatigue. The purpose of this study is to analyze the fundamental items human factors engineering which have to be applied to chairs and then to make user choose chairs, considering them as an index. The extent of this study is limited to chairs for office work used for sitting for a long time to work. We also profoundly analyze functional matters of chairs, user's posture and so on. We'll present all suitable factors and the assumed tentative plan by inferring items', the function chairs have coincides with the human body.

• Journal of the Korea Furniture Society
• /
• v.28 no.4
• /
• pp.314-325
• /
• 2017

Hans Wegner, one of the legendary designers who led the 20th century Nordic modern design, is a representative furniture designer of Danish Modern. His beautiful proportions, elaborate structure, lightweight and simple chairs show the essence of Danish modernism for mass production. Designed and built over 500 chairs, he demonstrated the essence of chair design through a fully structured prototype. He shows his passion and craftsmanship as a designer through over 1000 designs. In addition, chair design shows the value of timeless design and is loved by modern times. Therefore, this study aims to study the characteristics of chair design by Hans Wegner and to help furniture design education by analyzing design, structure, function and material.

• Transactions of the Korean Society of Automotive Engineers
• /
• v.15 no.6
• /
• pp.38-43
• /
• 2007

In this paper, a study is described on finding a relationship between discomfort and body pressure distribution. In the first step, experiments were conducted to find correlation between pressure distribution and discomfort. The experiments of 12 people on 9 seats were performed. In the second step, parameters and correlation coefficients were determined between the measured body pressure distribution and median values of the subjective evaluations of 12 subjects using psychophysical power law.

• Journal of KSNVE
• /
• v.7 no.1
• /
• pp.143-152
• /
• 1997

This paper introduces experimental results of the ride qulaity characteristics of automotive seats fixed on the vibration table that is noving simultaneously to the three-axis in a similar way to the real running condition. Vibration experiment was carried out for five different automotive seats and four Korean individuals. The assessment of the ride quality characteristics for each seat and indiviual was made not only from the analysis of vibration measurements but also from the evaluation of weighied vibration signals, which were obtained using the frequency weighting function and the multiplication factor dependent on the position and axis of vibration exposure to wehole-body. The usefulness of those assessment results in analysis of the ride quality of seats is discussed and their limitation is also pointed out in this paper.

• Journal of KSNVE
• /
• v.11 no.1
• /
• pp.76-81
• /
• 2001

This paper addresses experimental results carried out to investigate the transmission of seat vibration to the head for Korean. Vertical seat vibration in the frequency range of 0.5-30 Hz was applied to a seated Korean male subject. To examine the intra-variable effects on transmissibility, five different postures and three different vibration excitation levels were considered. The applied acceleration and head accelerations of the seated subject were measured simultaneously by using a 6-axes bite-bar. Detailed experimental results of measured transmissibilities are illustrated for each posture and/or vibration excitation level, and they were compared to an International Standard. They are found to allow the identification of dynamic characteristics of Korean seated body for various reat vibration environments. Furthermore, they are expected to be very useful in designing new seats for automotive and railway vehicles and in improving their vibration ride quality.

• Proceedings of the ESK Conference
• /
• 1995.04a
• /
• pp.124-133
• /
• 1995

A field study was conducted to assess the preferred height and the range of discomfort recognition of school desks and chairs for students from elementary school to high school. For this study 43 male subjects and 44 female subjects in Taejon area were surveyed. The result shows that the preferred height of chairs is about 1.7cm higher than the popliteal sitting height, while the preferred height of desks shows no significant difference with the elbow sitting height which is known to be the ergonomically proper desk height. The threshold value between comfort and discomfort recognition of chair height is 1.88cm below the most prefeered height and 1.79cm about it. The threshold value between comfort and discomfort recognition of desk height is 1.76cm below the most prefeered height and 2.62cm about it.

• 한국벤처창업학회:학술대회논문집
• /
• 2008.11a
• /
• pp.117-132
• /
• 2008

본 연구는 본점 주소지 거주 주민에 의해 그 매출액을 현저히 영향을 받는다고 생각되는 소상공 서비스업체들 중 미용서비스업체의 점포 선택 결정요인을 관심 변수로 다루었다. 입지요인에 의해 영향을 받는 경영성과 측정 변수를 경영자의 만족도나 소비자의 충성도 측면에서만 진행하지 않고 미용서비스업체의 성과인 실제 매출액과 방문자수를 활용하여 연구하였다는 점에서 선행연구와 큰 차이가 있다. 본 연구 결과는 미용서비스업체의 점포입지요인중 가시성 접근성이 경영성과에 영향을 미치는 것으로 나타났다 또한 미용시술의자수가 매출액과는 (+)의 관계를 디자이너 1인당 매출액에는 (-)의 영향을 미치는 것으로 나타났다. 본 연구는 미용서비스업체에 대한 분석을 하여 다른 소상공서비스업체에 확산 적용하는데는 한계가 있다. 또한 입지특성에 있어서도 유의적 영향을 미치는 추가적인 입지 변수들을 발견할 필요가 있다.

• Proceedings of the KIEE Conference
• /
• 2009.07a
• /
• pp.1974_1975
• /
• 2009

The chairbound, handicapped person often requires a cushion to distribute the supportive forces over the largest area possible in order to reduce the risk of the development of a pressure sore. Pressure sores are areas of damaged skin caused by staying in one position for too long and can cause serious infections, some of which are life-threatening. When sitting upright, the greatest proportion of body weight is centerd over the ischial tuberosities. So, it is important that comfortable seating and largest distribution of pressure to prevent pressure sores. Therefore, the objective of this study was to develop the physical pressure measurement device and orthodontic chair to prevent pressure sores.