• Proceedings of the Korea Society of Design Studies Conference
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• 1999.05a
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• pp.16-17
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• 1999

인간은 주변환경으로부터 정보를 수집하기 위하여 청각, 시각, 촉각 또는 후각 등을 사용하는 반면에 기존의 가상현실에 관한 연구들은 주로 시각과 청각을 이용하여 현실감을 감지하도록 하는 것들이 대부분이었다. 최근에 향을 이용하여 현실감을 증대시키기 위한 시도가 국내에서 이루어지고 있으나 후각은 기본적으로 화학물질에 의한 생체의 자극이므로 가상현실에서의 다양한 응용은 제한적일 수밖에 없으며 생체의 위해 여부에 대하여 논란의 소지가 있다.(중략)

• Journal of the Semiconductor & Display Technology
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• v.1 no.1
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• pp.41-45
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• 2002

In modem manufacturing, new applations and technologies demand smaller, and functional devices to replace large systems. As miniaturization becomes a necessity, many companies are interested in small pumps for use in creating ultra-high vacuum, but past efforts to develop such systems have failed due to problems with vibration, stress, heat and power consumption. This paper shows analysis-based design techniques for high vacuum turbomolecular pump by finite element analysis.

• Journal of the Korean Society of Safety
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• v.32 no.6
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• pp.40-45
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• 2017

Chemical accidents generated during maintenance, repair, and normal operation, such as dispersion, fire, and explosions, can cause massive losses like a 2012 hydro fluorine leak in Gumi, South Korea. Since this accident, many researches have studied physical mitigation systems. However, due to many difficulties including potential costs and lack time, it is really hard for many companies to install mitigation systems without prior knowledge. Thus, the efficacy of mitigation system should be evaluated. This study assesses a dike design considering the fluid velocity at an open hole when a leakage accident occurs. It is assumed that leakage materials follow a free fall motion. Throughout case studies, a current KOSHA guide for a dike design was evaluated and new guidelines handling various conditions were proposed.

• Current Optics and Photonics
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• v.2 no.3
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• pp.280-285
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• 2018

A new method to design a see-through off-axis head-mounted-display (OA-HMD) optical system with an ellipsoidal surface is proposed, in which a tilted ellipsoidal surface is used as the combiner, which yields the benefits of easier fabrication and testing compared to a freeform surface. Moreover, we realize a coaxial structure in the relay lens group, which is simple and has looser tolerance requirements, thus making assembly easier. The OA-HMD optical system we realize has a simple structure and consists of a combiner and 7 pieces of coaxial relay lenses. It has a $48^{\circ}{\times}36^{\circ}$ field of view (FOV) and 12-mm exit pupil diameter.

• Journal of the Ergonomics Society of Korea
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• v.16 no.1
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• pp.107-117
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• 1997

It is necessary to evaluate HMI inaspects of human factors in the design stage of MMIS(man machine interface system) and feedback the result of evaluation because operators performance is mainly influenced by the HMI. Therefore, the MMIS design should be reflected the operators psychological, behavioral and physiological characteristics in the interaction with human machine interface(HMI) in order to improve the safety and availability of the MMIS of a nuclear power plant(NPP) by reduction of human error. The development of human factors experimental evaluation techniques and integrated test facility(ITF) for the human factors evaluation become an important research field to resolve hi,am factors issues on the design of an advanced control room(ACR). We developed am ITF, which is aimed to experiment with the design of the ACR and the human machine interaction as it relates to the control of NPP. This paper presents the development of an ITF that consists of three rooms such as main test room(MTR), supporting test room(STR) and experiment control room(ECR). And, the ITF has a various facilities such as a human machine simulator(HMS), experimental measurement systems and data analysis and experiment evaluation supporting system(DAEXESS). The HMS consists of full-scope simulation model of Korean standard NPP and advanced HMI based on visual display nits (VDUS) such as touch color CRT, large scale display panel(LSDP), flat panel display unit and so on.

• International Journal of Advanced Culture Technology
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• v.11 no.4
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• pp.302-309
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• 2023

Wearable devices, attached to the human body, track and enhance users' activities, health, and communication. Therefore, considering ergonomic factors in product design is crucial. However, previous research has somewhat overlooked the importance of integrating ergonomic design elements into a broad spectrum of design factors. This study aims to examine the impact of physical attributes inherent in smart wristbands and smartwatches on the perceived functional value, specifically, perceived usefulness, ease of use, and fit. A survey was conducted among 289 US adults who had experience using smart wristbands or smartwatches. The collected data were analyzed using descriptive statistics, factor analysis, Cronbach's alpha, t-test, MANOVA, and regression analysis in SPSS version 29. The results showed that the shape of the front display significantly influenced perceived ease of use, and the product's weight had a substantial impact on both perceived ease of use and fit. Furthermore, distinct technical features on the front display had varied effects on perceived usefulness, ease of use, and fit. Notably, the presence of activity tracking, alarm, and calendar functionalities led to distinct differences in ease of use and fit. Features such as distance tracking, phone call, social media notifications, text messaging, and time display functions showed significant influences on the perception of fit. These findings provide insights into the physical values of smart wristbands and smartwatches as perceived by users.

• Journal of the Korean Society of Costume
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• v.16
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• pp.211-220
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• 1991

The purpose of this study is to examine the effect of the fashion shop display on the clothing purchase made by the sample of 369 adult women living in Seoul area. In this study, the interest and the effect of the display are investigated through such factors of demographic variables as each individual's age, educational career, vocation, average family income a month, and marriage status. And the relationship is also examined between the person's interest paid on the display and the clothing attitude related variables of fashion follow tendency, individuality, and the way of practical economy. An additional examinations are performed in the first reactive factor to be considered at the time of the clothing purchase, and the interrelation between the discontent after purchase and the effect of display before purchase. The major findings of this research, thus, can be summarized as following: 1. Demographic variables of women reflect differences in their interests toward display and accordingly the variety of the display effect as well. Less interest and effect are caused by the effort of display for the women in their senior age. However, a group of the character women and young college women pay relatively more attention to the display and give more effect to the purchase. The examination shows alsp that the unmarried and better-off and better-educated are more sensitive to the effect of the display. 2. The higher is the individuality and the fashion follow tendency, the stronger revealed the interest in the display, while the economic women have less interest in it. 3. The first factor considered at the time of purchase is not absolutely affected significantly by the degree of the display effect in real purchasing act. 4. The discontent after purchase is not related with how much the degree of display effects in the act of real purchase.

• Proceedings of the Korea Society of Design Studies Conference
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• 2002.05b
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• pp.168-169
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• 2002

• Proceedings of the Korea Society of Design Studies Conference
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• 2003.11a
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• pp.84-85
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• 2003

• 한국정보디스플레이학회:학술대회논문집
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• 2004.08a
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• pp.450-452
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• 2004

This paper analyzes some important achievements in Ergonomics field in CRT industry. After introducing principal regulatory requirements for CRTs, including ISO 9241 and TCO standards, the paper indicates some theoretical research in ergonomics of the display devices, such as new contrast parameter for appraising the display devices and effects of environment on visual performance at the ergonomic. Then, as the pivot of this paper, some practical progress, in the ergonomics field in CRT manufacturing , are described, such as vacuum sputtering process for advanced CRTs, new developed wet process for getting the multi-coating layers on surface of the panel.