• Korean Journal of Human Ecology
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• v.13 no.6
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• pp.1007-1021
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• 2004

The purpose of this study is to find out the effect of wearers' body types and clothes' neutral tone combination on impression formation. The experimental materials developed for this study are a set of stimulus and response scales(7-point semantic). The stimulus include 45 pictures manipulated by computer simulation in wears' body types and neutral tone variation. The subjects are 540 female undergraduate students in Gyeong-nam. The results of this study are as follows: Impression factor of the stimulus consisted of 5 different dimensions including tenderness, cuteness, attractiveness, elegance, intrepidity. Each impression of neutral tone combinations, along with wears' body types, had a significant effect on tenderness, attractiveness, and intrepidity. Especially, it had the strongest effects on attractiveness. Each impression of wearers' body types along with neutral tone combinations affected cuteness significantly. According to the fact above, wears' body types and neutral tone combination have a significant influence on the impression formation of wearers.

• Journal of the Korean Society of Clothing and Textiles
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• v.29 no.9_10 s.146
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• pp.1207-1218
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• 2005

The purpose of this study is to find out the effect of wearer's body type and clothing type, neutral tone combination on impression formation. The experimental materials developed for this study are a set of stimuli and response scales(The 7-point semantic). the stimuli are 90 pictures manipulated with wearer's body type, clothing type and neutral tone variation by computer simulation. The subjects are 540 female undergraduate students in Kyung-nam. The resulte of this study are as follows : Impression factor of the stimulus consisted of the 5 demensions(tenderness, cuteness, attractiveness, elegance, intrepidity). Wearer's body type had significant effects on all five factors. Especially, it had the strongest effects on attractiveness. Clothing type had significant effects on tenderness, attractiveness, intrepidity. Neutral tone combinations had significant effects on all factors except elegance. In regarding the effect of interaction between each variable, the combination of clothing type and neutral tone combination had significant effects on attractiveness, elegance, intrepidity.

• Korean Journal of Human Ecology
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• v.13 no.2
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• pp.317-328
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• 2004

The purpose of this study was to identify the effect of three clothing cues(neutral tone, skirt width, and skirt length of dress) on the impressions of females. The experimental materials developed for this study were a set of stimuli and response scales. The stimuli were 20 color pictures manipulated with three clothing cues by drawing. The 7-point scale designed for visual evaluation of impression formation about females included 29 bipolar adjectives. The subjects were 240 undergraduate female students in Chinju city. The results of this study were as follows: By analyzing the impression of female figures by neutral tone, skirt width, and length, five factors including ability.activity, elegance, attractiveness, concentration of attention, and tenderness were identified. Among these factors, ability.activity and elegance were proved to be more important. Each impression of neutral tone with skirt width. length have significant effects on tenderness. Each impression of skirt width.length with neutral tone have significant effects on ability.activity.

• International Union of Geodesy and Geophysics Korean Journal of Geophysical Research
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• v.23 no.1
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• pp.1-11
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• 1995

Thermospheric neutral winds and temperatures have been collected from the ground-based Fabry-Perot interferometer (FPI) at Thule Air Base ($76.5^{\circ}N{\;}69.0^{\circ}W$), Greenland since 1985. The thermospheric observations are obtained by determining the Doppler characteristics f the [OI] 6300 ${\AA}$ emissions of atomic oxygen. The FPI operates routinely during the winter season, with a limitation in the observation by the existence of clouds. For this study, data acquired from 1985 to 1991 were analyzed. The neutral wind measurements from these long-term measurements are used to investigate the influence of solar cycle variation on the high-latitude thermospheric dynamics. These data provide experimental results of the geomagnetic polar cap are also compared with the predictions of two semiempirical models : the vector spherical harmonics (VSH) model of Killeen et al. (1987) and the horizontal wind model (HWM) of Hedin et al. (1991). The experimental results show a good positive correlation between solar activity and thermospheric wind speed over the geomagnetic polar cap. The calculated correlation coefficient indicates that an increase of 100 in F10.7 index corresponds to an increase in wind speed of about 100 m/s. The model predictions reveal similar trends of wind speed variation as a function of solar activity, with the VSH and HWM models tending to overestimate and underestimate the wind speed, respectively.

• Proceedings of the KIPE Conference
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• 2001.07a
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• pp.475-478
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• 2001

In performing the three-level SVPWM, it is nearly impossible to control the neutral-point potential exactly to the half of the dc-link voltage at all times. Therefore the inverter would produce an erroneous output voltage by this voltage unbalance. So the voltage unbalance has to be compensated in doing PWM, when the voltage unbalance occurs whether it is small or large, to make the inverter output voltage follow the reference voltage exactly the same. In this paper, a new compensating method for the neutral-point potential variation in a three-level inverter space vector PWM (SVPWM) is presented. By using the proposed method, the output voltage of the inverter can be made same as the reference voltage and thus the current and torque ripple of the inverter driven motor can be greatly improved even if the voltage unbalance is quite large. The proposed method is verified experimentally with a 3-level IGBT inverter.

• The Transactions of the Korean Institute of Electrical Engineers
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• v.39 no.5
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• pp.516-518
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• 1990

We have derived the equation which involves the variation of electron energy with time in a lowly ionized plasma when a low alternating electric field is applied. We consider only elastic collisions between electrons and neutral atoms. This equation is solved using the 4th-order Runge-Kutta method, and applied to argon gas discharge which is driven by source frequency of 100, 1K, 10K, 100K, and 1M (Hz). The results show that the variation of electron energy becomes flat with higher frequencies.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.27 no.12
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• pp.109-113
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• 2013

In order to avoid the electrical fire, AFCI(Arc Fault Cirruit Interrupter) has been obligated to be adopted in the United States of America since 2002. AFCI using line resistor of neutral trace needs to compensate the variation of the line resistance by temperature variation. In this paper, the ASIC including the temperature compensation circuit is implemented. The proposed implementation is verified by showing the effectiveness of an electric and a temperature characteristics for Arc signals by simulation results.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1995.04b
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• pp.183-186
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• 1995

A simulation method basee on upper bound method is developed in order to characterize forging characters in forging of spur gears. In this paer, utlizing a kinematically admissible velocity field and applying it to study the effect of inner diameter of holow billet. To predict the variation of inner diameter of hollow billet, neutal surface has been introduced into forging of hollow gears from hollow billes with flat punch. The neutral surface of each step is assumed as a circle and determined in order to have minimum forging energy by golden section method. According to the analysis, the magnitude of inner diameter of initial billet is vary important to reduce the relative pressure and forging load. And the variation of inner diameter of billet during spur gear forging is successfully predicted.

• The Transactions of the Korean Institute of Electrical Engineers B
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• v.51 no.12
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• pp.664-669
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• 2002

In this paper the method to determine tire optimal switching instants in order to reduce the transient surges during switching not relevant to the neutral treatment of shunt reactors is presented. This method consists of the following two steps. First, the instants of the voltage peaks between the contacts of each poles and the voltage magnitude as well as the moments of the current zero crosses were found out analytically. Next, the instants of the contact touches or separations were determined in consideration of the rate of decrease of dielectric strength or a circuit breaker and the variation of the its operating time. The results obtained from the EMTP(Electromagnetic Transient Program) analysis studies show that the making instants are established at the peak voltage of each three poles for any conditions of a neutral point and the possible upper limited values of inrush currents due to the variation of the mechanical operating time can be estimated.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2009.05a
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• pp.293-296
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• 2009

In order to protect the electrical fire, AFCI(Arc Fault Cirruit Interrupter) was obligated to adopted in United States of America since 2002. AFCI using by line resistor of neutral trace needs to compensate the resistance variation of the line resistor by temperature variation. In this paper, the ASIC including the temperature compensation circuit is implemented. The successful implementation is verified by showing the effectiveness of an electric and a temperature characteristics for ARC signals by simulation results.