• Proceedings of the Korean Society for Applied Microbiology Conference
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• 1979.10a
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• pp.242-242
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• 1979

The general efforts of applied research and development can be divided into product development, process development, process design, process equipment design, and operation The fed batch culture as one effort of theprocess development in fermentation industry has been practiced since the early times of human history. One particular industrial application with long history is in the cultivation of the baker's yeast where the glucose effect at relatively high glucose concentration is the general rule.

• Proceedings of the KAIS Fall Conference
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• 2009.05a
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• pp.201-203
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• 2009

우리 사회에서 표출되고 있는 젠더의 문제는 일상성의 문화로 고착되어지고 있다. 또한 미디어에서도 젠더의 표출은 명백하게 드러나고 있다. 미디어 문화에서 표현하고 있는 젠더의 문제 또한 고정관념으로 한국의 가부장제 중심의 남성 지배구조를 표출하고 있다. 물론 드라마에서 쉽게 볼 수 있는 젠더의 고정 관념이 변화하고 있으나 우리 사회는 여전히 남성 중심의 가부장제의 의식세계가 깊숙이 자리매김하고 있는 상황이다. 그러므로 본 연구에서는 젠더와 미디어와의 연관성을 중심으로 사회문화적 현상을 고찰하고자 한다.

• Proceedings of the KAIS Fall Conference
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• 2009.05a
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• pp.361-363
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• 2009

미디어 문화는 대량 생산과 거대한 수용자 집단을 구성하고 있으며, 대중의 일상성의 문화로 자리매김 하고 있는 특징을 갖고 있다. 그러나 리얼리티 TV는 대량생산과 확산에 따른 다양한 사회문화적 현상을 야기하고, 비판적 견해도 따르고 있다. 그러므로 본 연구에서는 리얼리티 TV에 대한 재해석의 필요성이 요구됨을 인식하고, 이를 바탕으로 사회문화적으로 미치는 영향에 대해 고찰하고자 한다.

• The Journal of Korea Robotics Society
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• v.2 no.3
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• pp.282-287
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• 2007

Humanoid and android robots are emerging as a trend shifts from industrial robot to personal robot. So human-robot interaction will increase. Ultimate objective of humanoid and android would be a robot like a human. In this aspect, implementation of robot's facial expression is necessary in making a human-like robot. This paper proposes a dynamic emotion model for a mascot-type robot to display similar facial and more recognizable expressions.

• Journal of the Korean Data and Information Science Society
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• v.19 no.4
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• pp.1233-1246
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• 2008

This study examines characteristics of people who are experiencing severe hair loss problems. We focus on how these characteristics are related to their psychological problems, hair loss treatments, wig-wearing practices, and life styles. We gathered survey data from people who visited wig shops for their hair loss problems. The study shows that men and women have different characteristics in every aspect we consider.

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2002.05a
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• pp.271-276
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• 2002

A numerical study using linear finite element analysis is performed to investigate the behavior of basement wall subject to soil and water pressure in this study, parametric studies are peformed to investigate the variation of moment and shear force according to column-to-wall stiffness ratios and aspect ratios. Scaled factors applicable to the design of basement wall are proposed with the illustration of design examples.

• Journal of Korean Institute of Industrial Engineers
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• v.38 no.2
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• pp.133-143
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• 2012

The study on social robots has been actively conducted in the robot research community. In the area of robot design, however, there are few studies regarding robot motions that are one of the methods for interaction between humans and robots. This is a preliminary study to find preferred human motions that can be applied to social robots. We conducted a two-phased empirical study about preferred human motions. In the first phase, four representative human motions, such as 'greeting', 'I don't know', 'positive answer', and 'giving', were captured through 28 body makers and video recording. 10 young and 6 elderly Singaporeans participated in the motion capture process. In the second phase, the communication efficiency, emotion, and satisfaction of the human motions recorded in the first phase were measured by a questionnaire and 31 young Koreans, 35 young Singaporeans participated to investigate cultural differences. We drew the conclusion that motions used in the same culture are efficient in communication and also give friendliness and satisfaction. In addition, regardless of user's culture, young people's motions and female motions were preferred in terms of communication efficiency, emotional aspect, satisfaction.

• Clean Technology
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• v.8 no.4
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• pp.193-198
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• 2002

In a knowledge-based information society, the technology in itself is one of the most valuable information and in common use as assets. Assessment of a technology depends on many factors such as the grade of technology, marketability, and the time of evaluation, which makes it much more difficult to perform than the other tangible properties. Ultimately, it should be extremely important to consider environmental aspect for technology assessment in order to cope voluntarily with the change of uncertain future toward highly reliable evaluation.

• Journal of Korean Institute of Industrial Engineers
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• v.37 no.1
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• pp.74-82
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• 2011

The Bass model is a cornerstone in diffusion theory which is used for forecasting demand of durables or new services. Three well-known estimation methods for parameters of the Bass model are Ordinary Least Square (OLS), Maximum Likelihood Estimator (MLE), Nonlinear Least Square (NLS). In this paper, a hybrid method incorporating OLS and NLS is presented and it's performance is analyzed and compared with OLS and NLS by using simulation data and empirical data. The results show that NLS has the best performance in terms of accuracy and our hybrid method has the best performance in terms of stability. Specifically, hybrid method has better performance with less data. This result means much in practical aspect because the avaliable data is little when a diffusion model is used for forecasting demand of a new product.

• IE interfaces
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• v.18 no.4
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• pp.382-389
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• 2005

Location management is very important issue in wireless communication system to trace mobile users' exact location. In this study, we propose a dynamic location area management scheme which determines the size of dynamic location area considering each user's characteristics. In determining the optimal location area size, we consider the measurement data as well as the historical data, which contains call arrival rate and average speed of each mobile user. In this mixture of data, the weight of historical data is derived by linear searching method which guarantees the minimal cost of location management. We also introduce the regularity index which can be calculated by using the autocorrelation of historical data itself. Statistical validation shows that the regularity index is the same as the weight of measurement data. As a result, the regularity index is utilized to incorporate the historical data into the measurement data. By applying the proposed scheme, the location management cost is shown to decrease. Numerical examples illustrate such an aspect of the proposed scheme.