• Journal of Institute of Control, Robotics and Systems
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• v.17 no.7
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• pp.668-673
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• 2011

This paper presents design and control of a wheelchair robot for handicapped or elderly persons. Novel multi-functional design concepts are introduced. The first function is to balance the chair always parallel to the flat ground so that the driver feels comfortable when he/she drives on the slope. The second function is to help the driver to stand up by pushing the chair so that the driver can get out from the chair with ease. The third design is to make it foldable for easy carrying for automobiles. The last function is an immediate stop and start protection. Experimental studies are conducted to demonstrate the feasibility and functionality of each mechanical design.

• Journal of the Korea Society of Computer and Information
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• v.23 no.8
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• pp.25-30
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• 2018

In this paper, we design a 2D one touch runner game which controls on smart device easily using a Unity3D game engine. Unity is the creator of the world's widely-used 2D and the 3D cross-platform game engine developed by Unity Technologies. Also, Unity builds high-quality 2D and 3D games on a various hardware device. This paper shows the familiar character as a cartoon and feels to enjoy using platformer with various game users. we show that the proposed platformer method improve controlling game path on the smart device.

• Transactions of the Korean Society of Automotive Engineers
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• v.8 no.4
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• pp.186-193
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• 2000

EPS(Electric Power Steering) systems have many advantages over traditional hydraulic power steering systems in space efficiency engine efficiency and environmental compatibility. In this paper an EPS system control logic using a torque map is proposed. The main function of the EPS system is to reduce the steering torque exerted by a driver by assist of an electric motor. Vehcile speed steering torque and steering wheel angle are measured and fed back to the EPS control system where appropriate assist torque is generated to assist the operator's steering effort. Another capability of the EPS system for easy adaptation to different steering feels via simple tuning is demonstrated by the experiments. It will be also verified that the EPS system can also improve damping and return performance of the steering wheel by control of the assist motor.

• Communications for Statistical Applications and Methods
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• v.9 no.3
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• pp.619-627
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• 2002

It is unpractical for the optimal design theory based on the given model and assumption to be applied to the real-world experimentation. Particularly, when the experimenter feels it necessary to consider multiple objectives in experimentation, its modified version of optimality criteria is indeed desired. The constrained optimal design is one of many methods developed in this context. But when the number of constraints exceeds two, there always exists a problem in specifying the lower limit for the efficiencies of the constraints because the “infeasible solution” issue arises very quickly. In this paper, we developed a sequential approach to tackle this problem assuming that all the constraints can be ranked in terms of importance. This approach has been applied to the polynomial regression model.

• International Journal of Automotive Technology
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• v.8 no.4
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• pp.505-512
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• 2007

This paper presents the quantitative evaluation of the fearfulness of the human driver in the case of the short range (time) on the highway. The driving situation is realized by using the driving simulator based on CAVE, which provides three-dimensional stereoscopic immersive visual information. The examinees' responses and personal information are categorized reasonably by applying the competitive learning algorithm. The characteristics of each group are analyzed. The following two situations are also compared: (1) the active approaching situation where the examinee drives the vehicle near the preceding vehicle, and (2) the passive approaching situation where the preceding vehicle nears the examinee's vehicle by gradually decelerating. The range time that the examinee feels fear in the active approaching case tends to be shorter than that in the passive approaching case.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.26 no.2
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• pp.98-107
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• 2018

Recently, the airline industry has grown tremendously, and competition among airlines has intensified. Therefore, the importance of airline's service quality has been greatly emphasized. The human service provided by the airline is the biggest service the customer feels, so the customer orientation of the flight attendant is very important. The aim of this study was to identify the mediating effects of organizational commitment on the relationship among transformational leadership and customer orientation. As a results of the study, transformational leadership had positive significant effects on organizational commitment and job customer orientation. The results of this study imply that the organizational commitment play significant mediating role between transformational leadership and customer orientation.

• Science of Emotion and Sensibility
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• v.18 no.4
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• pp.47-58
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• 2015

Due to recent interest in user experience and its significance, much research surrounding this theme is now being conducted. If user experience is defined as the emotions and satisfaction the user feels while using the product, how much of such experience will contribute to the overall satisfaction of using the product? In this research, user experience during usage of a product and the satisfaction acquired by it were investigated. The same experiment was conducted in South Korea and the United States of America in order to get more generalized experimental results. Amongst the six representative user emotions expressed while using a product, 'Satisfaction in Usability', 'Discomfort or Displeasure', and 'Excellence' correlated the most. The above three factors were found to be of the most influence concerning satisfaction of the product. The significance of this finding is that aside from focusing on the attractiveness of the product's exteriors and design, one should be concerned on the ease of usage and effectiveness as well as usability of the product, all of which contribute to how efficiently a consumer will utilize the product.

• Korean Institute of Interior Design Journal
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• v.14 no.6 s.53
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• pp.168-176
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• 2005

This study is a understanding on technological specific expression to reflect of a research institute in modern architecture. For this study, it separately reduce space program, plan program, design elements of elevation, structural system, mechanical system, building material program to its expressional elements of research institute. Also, it's arranged about a specificity that is expressed for technology each plan elements of a research institute. As a result, elements what is expressive of technology on research institute are influenced an aesthetic expression, expression of an arrangement system, structural expression, expression of architectural organization, and it influences more getting feels technological specificity expressed an aesthetic, structural system, architectural composition, mechanical distribution system in order of their magnitude. This is offered suggestion what must be an achievable complex both a simply technological expression and aesthetic expression.

• Proceedings of the Safety Management and Science Conference
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• 2009.04a
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• pp.309-320
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• 2009

Today, Advertisement affects the daily consumption life of consumers because of the features and advantages of advertisement. In particular, and so does the TV advertisement. Therefore, customer education is required for the consumers so that they can lead a rational consumption through TV advertisement quality. In addition, with the introduction of the many new-born distribution channels, the recent market environment in apparel industry is changing, and the service and image of store types consumers can choose are increasing. The purpose of this research is to offer basic data which can help consumers to acquire necessary information and conduct rational consumption through TV advertisement. Also purchasing behavior of consumers communicate, feels of consumers about store image, TV advertisement quality of what is the attitude of the relative influence presents.

• Proceedings of the IEEK Conference
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• 2008.06a
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• pp.879-880
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• 2008

Music can give pleasure to people according to a rhythm, and Musical instrument can make various sounds according to quality of the lumber. A string instrument makes sound by strings so it feels very soft and a brass makes to feel a high pitched tone. A gayageum makes sound by oscillation which is transferred to a resonator when a string is touched. And this sound is very soft and faint. Therefore, in this paper, we researched sound properties of gayageum according to quality of the lumber of musical instrument. As the result of researches, we found that melody is affected by the annual ring of the resonance lumber.