• Proceedings of the IEEK Conference
• /
• 2003.07e
• /
• pp.1743-1746
• /
• 2003

C. elegans often used to study of function of gene, but it is difficult for human observation to distinguish the mutants of C. elegans. To solve this problem, the system, which can be classified automatically using the computer vision, is studying now. In the previous works , they described the auto-tracking system and the egg-laying timing modeling, which are used to automated-classily system. In this paper, we use three kinds of features, which are related to movement , size and posture of the worm, and each feature is described mathematically and normalized. In experimental result, we validated the features for the hierarchical clustering, And we used the Calinski and Harabasz's method to find the appropriate cluster number.

• Journal of Information Display
• /
• v.13 no.3
• /
• pp.125-130
• /
• 2012

In this paper, a new precharging method without any side effects is proposed to overcome image degradation caused by insufficient charging times. This work explains why the precharging method can compensate for short charging times. However, side effects of the precharging method in the form of horizontal line artifacts are addressed, wherein line artifact-compensating precharging (LCP) is presented to mitigate the side effects. Behavioral modeling is employed to investigate the side effects by estimating transient responses of a liquid crystal display. The LCP proves that it can dramatically reduce line artifacts caused by precharging because the brightness difference of adjacent pixels does not exceed 1.0.

• Journal of Information Technology Services
• /
• v.12 no.2
• /
• pp.55-71
• /
• 2013

Despite the growing interest in technostress phenomenon of employees in organizations, few guidelines exist about how mangers can effectively control their technostress. Accordingly, scholars should pay greater attention to how firms can successfully manage employees' technostress. This study conceptually developed and tested a research model for understanding the influence of technostress on psychological and behavioral strains. In addition, we tested technical support provision as a moderator. We obtained 107 samples through a survey questionnaire, and data were analyzed based on structural equation modeling (SEM). As a result, it was empirically demonstrated technostress decreases job satisfaction and individual productivity. We also found that technical support provision have moderating effects on the relationship of technostress and job satisfaction/individual productivity.

• Proceedings of the KAIS Fall Conference
• /
• 2010.05b
• /
• pp.634-636
• /
• 2010

소비자의 행동이론은 경영학의 주된 관심사이다. 소비자의 소비 행동패턴 이론은 소비자의 합리적 소비에 근거한 선호도로써, 선택의 문제를 주요한 연구대상으로 삼고 있다. 하지만 본 모델링은 소비자의 선택을 선호의 문제로 취급하는 기호에 의존하기 보다는, 상권의 측정가능한 크기에 의존하는 수동적 의미의 소비패턴을 산정하게 된다. 단순한 몇 가지 가정을 기반으로 하여 상권이 미치는 영향력을 상권의 거리와 상권의 크기로만 한정할 경우, 최적 경로에 따른 합리적인 소비함수 모델링을 만들 수있다. 상권의 거리 및 상권의 크기로 상권의 범위를 제한 할 경우, 물리학 분야인 전기자기학 중에서 쿨롱의 법칙으로부터 유도된 전기장의 개념을 도입하여 상권의 의미를 재해석할 수 있다. 향후 본 모델링에 대한 소비자 행동패턴의 실질적인 검증 및 추가 도입변수 및 에러항을 도입한 일반적인 모델링으로 발전시킬 수 있고, 그 또한 추가 연구주제가 될 수 있다.

• Proceedings of the KIEE Conference
• /
• 1998.07f
• /
• pp.1876-1878
• /
• 1998

For an analysis and simulation of the conducted EMI of switching converters, an accurate simulation model for MOSFET is needed. This paper presents a new modeling approach, which incorporates DC output characteristics and AC dynamics especially the parasitic capacitances. It uses Pspice ABM(Analog Behavioral Model) and the MOSFET parameters can be obtained from the Data sheet in the frequency range of interest for EMI analysis. The model verified with an experimental setup and the EMI for a test converter is analyzed with respect to the MOSFET switching waveforms.

• ETRI Journal
• /
• v.30 no.4
• /
• pp.535-545
• /
• 2008

This paper introduces a systematic top-down and bottom-up design methodology to assist the designer in the implementation of continuous-time (CT) cascade sigma-delta (${\Sigma}{\Delta}$) modulators. The salient features of this methodology are (a) flexible behavioral modeling for optimum accuracy-efficiency trade-offs at different stages of the top-down synthesis process, (b) direct synthesis in the continuous-time domain for minimum circuit complexity and sensitivity, (c) mixed knowledge-based and optimization-based architectural exploration and specification transmission for enhanced circuit performance, and (d) use of Pareto-optimal fronts of building blocks to reduce re-design iterations. The applicability of this methodology will be illustrated via the design of a 12-bit 20 MHz CT ${\Sigma}{\Delta}$ modulator in a 1.2 V 130 nm CMOS technology.

• Korean Journal of Child Studies
• /
• v.25 no.6
• /
• pp.35-52
• /
• 2004

The purpose of this study is to explore the relation among mother's rearing attitude in infancy, children's self-concept and the relationship with friends in childhood by using the longitudinal data originated by the Korean Institute for Research in the Behavioral Sciences(KIRBS). Specifically, using Structural Equation Modeling(SEM), the causal relation among the mother's rearing attitude in infancy, children's self-concept and the relationship with friends in childhood were examined across a 8-year-period. The subjects were 68 children(38 boys and 30 girls) from the KIRBS longitudinal data. The results showed that mother's rearing attitude in infancy can be consequential environmental variable factor, and children's self-concept do not play an essential intermediate role between mother's rearing attitude in infancy and the relationship with friends in childhood. This study used a newly attempted method in the field of Human Development.

• The Transactions of the Korean Institute of Electrical Engineers P
• /
• v.59 no.4
• /
• pp.405-410
• /
• 2010

In this paper, the simulation of solar system was used to facilitate PSPICE. Solar cells, Controller, MPPT system, DC-DC system modeling, and easy to use, made to the library. To prove the validity of the library for the temperature and space radiation were simulated and behavioral characteristics were identified. To prove the validity of the simulation, the hardware was constructed to the same conditions. Implemented using the hardware and the DSP controller for a real system, the results were confirmed by experiments.

• Korea Trade Review
• /
• v.44 no.1
• /
• pp.143-158
• /
• 2019

As the overseas direct purchase market grows rapidly, firms are setting up various strategic directions to attract consumers. However, many previous researches on this issue have focused on consumption behavior based on consumers' motivation and demographic factors, so there is a certain limit to suggest practical implications for firms. Therefore, this study proposed modeling to understand how firm's strategic direction influences consumers' acceptance behavior in order to overcome these limitations. For this purpose, this study conducted a survey on 357 domestic consumers and conducted empirical analysis through structural equation model analysis. As a result, the effort expectancy of overseas direct purchase site has a strong influence on consumer intention as much as performance expectancy. We also found that product variety had the strongest impact on performance expectancy and that web site reputation directly affected consumers' behavioral intention as well as purchasing behavior.

• International conference on construction engineering and project management
• /
• 2005.10a
• /
• pp.564-568
• /
• 2005

Recently, Knowledge Management (KM) has been applied to construction industry. Surprising, there is few studies that address the most fundamental problem in KM: people may prefer not to share their knowledge so as to preserve their intellectual or unique values in the organization. Without the premise of each individual's willingness to share knowledge, there will be no valuable input for the IT system and, thus, no knowledge management at all. This paper aims to model the behavioral dynamics of knowledge sharing and to design an incentive system that may facilitate knowledge sharing for construction companies. In this paper, a game-theory based model will be developed, and the framework for designing an incentive system will be proposed according to the model.