• 한국태양에너지학회:학술대회논문집
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• 한국태양에너지학회 2012년도 춘계학술발표대회 논문집
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• pp.140-145
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• 2012

The purpose of this study is to understand the change of impression by comparing the uniformity lighting with the compound lighting. In previous study, we proposed a light controlling method to harmonize daylight from a window and artificial lights from a ceiling and obtained the results to support our method. We referred this method as the Adjusted Compound-Lighting Model (AC Model). The model claims that lighting in a room with a side-window are perceived as harmonious when the overall light distribution in the room is well approximated by a compound of lights from the window and the entire ceiling. The experiment is carried out with the scaled-models and mock-up spaces that were supposed to be an office space. One is lit by the uniform lighting and the other by the compound lighting in each experimental space. In order to present varying illuminance distributions, thetwo variables were used in this study. One was the ratio of thelight from the window and ceiling in the standard and evaluation box. The standard box was provided by the ratio of 20% to 40% from the window and 80% to 60% from the ceiling as two lighting ratio patterns [Wu20(=Cu80) and Wu40(=Cu60)]. And the evaluation box was provided by the light ratio of 0% to 40 from the window and 100% to 60% from the ceiling [Wcp0(=Ccp100), Wcp20(=Ccp80) and Wcp40(=Ccp60)]. The other variable was themean illuminance level in both boxes. Two level of mean illuminance (700lx and 300lx) were used in this experiment. Each lighting condition was established at equal horizontal mean illuminance level, held constant near 700lx or 300lx in both boxes. Both of them were similar in the shape of distribution when there were same ratios of lights from the window and the ceiling. Subjects were asked to evaluate the point of difference by semantic differential rating on their overall impression after comparing with two rooms. The results showed that the impressions of compound lighting were more positive score than that of uniformity lighting on the items of 'dim-bright', 'dislike-like', 'artificial-natural' and 'closed-open', and that there was no significant difference in impressions between two spaces on other items.

• 한국콘텐츠학회논문지
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• 제12권1호
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• pp.68-79
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• 2012

한국은 경제 부흥을 꾀하기 위해 1980년대 말부터 도로시설물 건설을 확대해 왔다. 그 결과, 2010년 이후부터는 시설물의 보수, 보강 수요가 급증할 것으로 예측된다. 따라서 제한된 예산을 가지고 사용자의 만족도를 높이면서 시설물의 관리 기술을 혁신하기 위해 자산관리정보시스템을 연구하고 있다. 본 연구는 터널시설물의 유지관리를 대상으로 서비스 수준을 평가하는 항목을 제시하는 내용으로서, 이를 위해 사용자와 관리자를 구분하여 평가항목의 중요도에 대해서 설문조사를 실시하였다. 설문조사 결과를 토대로 Satty가 제시한 AHP(Analytical Hierarchy Process) 기법을 사용하여 평가항목들의 상대적 중요도를 파악하였다. 사용자관점에서의 중요도는 안정성-이동성-접근성-편리성-관리 효율성-쾌적성-지역 활성화-환경성-정보성 순서로 파악되었다. 또한 관리자관점에서의 중요도는 안정성-이동성-접근성-환경성-지역 활성화-편리성-관리 효율성-정보성-쾌적성 순서로 파악되었다. 이는 도로가 갖는 가장 기본적인 기능인 이동성보다 터널시설물의 안전성에 대한 관심이 더 높다는 것을 의미한다. 따라서 터널시설물의 유지관리 투자계획을 수립할 때 안전성을 확보할 수 있도록 보다 많은 관심과 노력을 기울려야 할 것으로 사료된다.

• 대한가정학회지
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• 제33권5호
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• pp.75-88
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• 1995

The objectives of this study were to classify the contents of clothing shopping orientation, to group women into shopper types, and to examine the differences in clothing purchase criteria according to the shopper types. Samples were 335 women(20-49 years of age) in Seoul, Korea. The data were analyzed using factor analysis, cluster analysis, one-way ANOVA, Duncan's multiple range test, X2 test, paired t-test, multiple regression analysis. The results of the study were the followings. 1. Five factors of clothing shopping orientation derived by factor analysis : F.1 'impulsive shopping' ; F.2 'rational shopping' ; F.3 'independent shopping' ; F.4 'economic shopping' ; F.5 'convenient shopping'. Three shopper types were classified by cluster analysis of the 5 factors : T.1 'convenient shopper' ; T.2 'impulsive shopper' ; T.3 'rational shopper'. 2. Significant differences were found among the 3 shopper types in all clothing purchase criteria. Rational shopper perceived all purchase criteria as more important than did the other 2 types. Impulsive shopper perceived 'fashion', 'attractiveness', 'style', and 'bland' as more important than did convenient shopper. 3. Married women and unemployed women were more distributed in rational shopper, while the unmarried and the employed more in impulsive shopper. Impulsive shopper used more credit care, purchased suits and blouses at department store and brand specialty store more than did rational shopper. Rational shopper purchased at discount store and wholesale store more than did impulsive shopper. 4. Women assessed 'color and fabric design' as most important in suit and blouse purchase criteria. 'Care' was perceived more important in blouses than in suits, and the other 9 purchase criteria(fashion, attractiveness, style, color and fabric design, fabric, durability, costruction, comfort, and brand) were perceived more important in suits than in blouses. 5. Rational and economic shopping orientation scores were higher in suit purchase than in blouse, while impulsive, independent, and convenient shopping orientation scores were higher in blouse purchase. 6. Post-purchase suit satisfaction was influenced by rational shopping orientation, educational level, style, income, and comfort. The explanatory power of the 5 variables was 17.2%. Post-purchase blouse satisfaction was influenced by style, care, rational shopping orientation, and independent shopping orientation. The explanatory power of the 4 variables was 10.2%.

• 한국의류학회지
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• 제30권6호
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• pp.981-991
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• 2006

The purpose of this study was to determine the practicability of an experimental protective clothing by identifying the human body's physiological responses to it as well as the human body's comfort level when wearing it, particularly with the use of a processed charcoal material. The experimental protective clothing came in two types: one whose outer side made use of polypropylene film, and the inner side, a non-woven rayon fabric; and one whose inner side made use of a non-woven fabric processed with charcoal with a 10% density. Experiments were conducted on five healthy adult women whose average age was 21. These experiments were conducted at a climatic chamber, in which the temperature and relative humidity were set below $28{\pm}1^{\circ}C\;and\;50{\pm}10%$, respectively, and were measured within a period of 60min, consisting of a 20-min rest period, a 20-min exercise period, and a 20-min recovery period. Based on the results of this study, the efficiency of the processed charcoal material was reviewed, and a database requiring the production of more functional and comfortable protective clothing materials was established.

• 국제초고층학회논문집
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• 제1권1호
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• pp.15-19
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• 2012

Occupant footfalls are often the most critical source of floor vibration on upper floors of buildings. Floor motions can degrade the performance of imaging equipment, disrupt sensitive research equipment, and cause discomfort for the occupants. It is essential that low-vibration environments be provided for functionality of sensitive spaces on floors above grade. This requires a sufficiently stiff and massive floor structure that effectively resists the forces exerted from user traffic. Over the past 25 years, generic vibration limits have been developed, which provide frequency dependent sensitivities for wide classes of equipment, and are used extensively in lab design for healthcare and research facilities. The same basis for these curves can be used to quantify acceptable limits of vibration for human comfort, depending on the intended occupancy of the space. When available, manufacturer's vibration criteria for sensitive equipment are expressed in units of acceleration, velocity or displacement and can be specified as zero-to-peak, peak-to-peak, or root-mean-square (rms) with varying frequency ranges and resolutions. Several approaches to prediction of floor vibrations are currently applied in practice. Each method is traceable to fundamental structural dynamics, differing only in the level of complexity assumed for the system response, and the required information for use as model inputs. Three commonly used models are described, as well as key features they possess that make them attractive to use for various applications. A case study is presented of a tall building which has fitness areas on two of the upper floors. The analysis predicted that the motions experienced would be within the given criteria, but showed that if the floor had been more flexible, the potential exists for a locked-in resonance response which could have been felt over large portions of the building.

• 대한의용생체공학회:의공학회지
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• 제41권5호
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• pp.203-209
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• 2020

As the number of people with gait disorders increases, the demand for using wheelchairs increases and the area of a ctivity for people with disabilities expands, thereby they increasing the demand for riding comfortability in various driving environments. Therefore, this study is to develop an entry-level active suspension system that apply to wheelchairs and to evaluate its usability. The suspension applied in this paper consists of a coil spring, a shock absorber, a control module to control the strength of the shock absorber, and a road surface condition monitoring system. A wheelchair occupant secures the riding comfort by adjusting the coil strength of the shock absorber in 12 steps according to various road conditions. Therefore, the mechanical properties were evaluated through the structural analysis of the suspension system, and the tendency toward the magnitude of the road surface vibration attenuated according to the rigidity of the suspension through the vibration test was attempted. In conclusion, as a result of structural analysis of the suspension system, stress in a range lower than the yield strength of the material was generated, and the vibration test showed the effect of attenuating the vibration generated from the road surface when the stiffness of the suspension was adjusted.

• 한국의류산업학회지
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• 제2권5호
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• pp.416-422
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• 2000

In this study, to find out the physiological reaction of the human body and the sensation of comfort when people are wearing sportswear which is made of waterproof breathable fabrics under general environmental conditions (temperature : $20{\pm}1^{\circ}C$, humidity : $60{\pm}5%RH$, air current : 0.1 m/sec) and rainy environmental conditions (temperature : $20{\pm}1^{\circ}C$, humidity : $60{\pm}5%RH$, air current : 0.1 m/sec, rainfall : 250 1/hr), we made an experiment with sportswear in an artificial climate chamber and studied the thermal physiological response and subjective sensation. Mean skin temperature of the subjects was low and had a big range of fluctuation in rainy environmental conditions of two condition. Temperature started to increase at the beginning of the exercise, reached the maximum at the 2nd level of the exercise and then started to decline. Rectal temperature showed a slighter increase and bigger range of fluctuation in general conditions than in rainy conditions. Except clothing micro climate in rainy conditions, temperature and humidity and their range of fluctuation around back were higher than those around chest. Humidity was high and had wide range of fluctuation in general conditions. Heart rate was 4.4 beats/min higher in general conditions. In subjective test on rainy conditions, the feeling of discomfort increased due to the raindrops fallen on the skin. Unlike that in general conditions, cold sensation increased and humidity sensation reached to the peak after the exercise. In wearing sportswear made of shape memory breathable waterproof fabric, controlling function over a small amount of heat and water was distinctive while it turned out to be not so comfortable over a large amount of heat and water. Through this, the limitation of shape memory breathable waterproof fabric was recognised.

• 한국의상디자인학회지
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• 제19권3호
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• pp.1-16
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• 2017

This study examines the clothing pursuit benefit and pursued image of middle aged men according to lifestyle and body satisfaction. A survey was carried out among male consumers between the ages of 40 and 50, and a total of 322 responses were analyzed by factor analysis, a reliability test, cluster analysis, t-test, and ANOVA. The results of this study were as follows. Middle aged men were classified into four different groups in terms of lifestyles, including health managing, trend-seeking, economic consumption, and proactive lifestyle groups. As a result of looking at the differences in clothing pursuit benefits among four lifestyle groups, two lifestyle groups such as trend-seeking and proactive lifestyle groups both considered individuality more importantly than other clothing pursuit benefits. The proactive lifestyle group considered comfort, social recognition and individuality benefits. As a result of looking at differences in the pursued image of clothing among lifestyle groups, the proactive lifestyle group preferred a classic, refined and mild clothing image. There were significant differences in clothing pursuit benefits and pursued images between high- and low-level groups of body satisfaction. Those with high body satisfaction considered individuality, social recognition, and comfort more than those with low body satisfaction. The high body satisfaction group preferred all clothing images such as mild, classic and refined.

• 대한간호학회지
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• 제8권1호
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• pp.139-151
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• 1978

This study is to observe the effects of nursing care according to change of position for comfort during labor and safe delivery of newborn infants and perturbment women. Fifty antepartal primipara with labor pain who were admitted to the delivery room of H University Medical Center from September 1, 1976 to November 15, 1976 (Estimate Delivery Confinement) were selected for this investigation. Among the 50 parturiencys, the experimental group (28 primipara) were placed in 30 degree upright sitting position and the control group (22 primipara) were placed in the supine position. following placement, both groups were observed. The summarized findings of the study were as follows; 1. There was a noticeably significant difference in the duration of the first stage of labor (defined as 4 cm. dilatation of the cervical os with the fetal presenting part engaged to full or 10 cm. dilatation) , between the two groups. For women in the 30 degree upright sitting position, the first stage of labor was close to 33.66 minutes shorter. than for the women in the supine position. (t : 32.79, D.F : 48, p<0.0,i) 2. Although slight differences were observed between the Apgar Scores of the newborn infants of primipara in the two groups, these were not significant. The mean Apgar Score among the newborn infants of primipara in the 30 degree upright sitting position was 9.64 compared with 9.04 for the newborn infants of primipara in the supine position, a difference of 0.6. (x$^2$= 2.44, D.F : 2, p〉0.05) 3. There was a significant difference in the conformability of the perturbment women between the two groups because the shortened duration of the first stage and the high level of comfort score calculated for six factors (body activity, serving bed pan, serving kidney basin, pushing, deep breathing and perturbment women's feelings), that affect nursing care.

• EDISON SW 활용 경진대회 논문집
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• 제5회(2016년)
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• pp.246-255
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• 2016

When spring of the suspension is exerted by an external load, a car should be designed to prevent predictable damages and designed for a ride comfort. We used experiments design to design VON-MISES STRESS and K, a constant, of spring of suspension which is installed in a car as a goal level. We analyzed the result from Edison's Elastic - Plastic Analysis SW(CSD_EPLAST) by setting D, d, n as external diameter of coil, internal diameter of coil, the number of total coil respectively. The experiment design let the outcome be as Full-second order by using Box-Behnken which is one of response surface methods. Experimented and analyzed results based on the established experiments design, We found out design parameter which has desired VON-MISES STRESS and the constant K. Additionally, we predicted life time of when the external load was exerted by repeated load by using fatigue equation, and verification of plastic deformation has also been made. Additionally we interpreted a model, which is formed by optimized design parameter, with linear analysis and non-linear analysis, at the same time we also analyzed plastic deformation with the values from the both models. Finally, we predicted fatigue life of optimized model by using fatigue estimation theory and also evaluated a ride comfort with oscillation analysis.