• Proceedings of the KSR Conference
• /
• 2003.10a
• /
• pp.131-137
• /
• 2003

In this paper, we introduce the characteristics of ride comfort for KTX(Korea Train express) and HSR 350(Korea High Speed Train project). The concept of term "ride comfort" is equivocal. Generally it is defined as the vehicle vibration. There are many studies on evaluation method of ride comfort for railway. In the case of KTX, the ride comfort has been evaluated according to ISO 2631 standard. But the ride comfort for HSR 350 has been assessed by UIC 513R. We have reviewed the ride comfort for KTX and HSR 350 by same method, such as ISO 2631 and UIC 513R, and compared the result of KTX with that of HSR 350.

• Transactions of the Korean Society for Noise and Vibration Engineering
• /
• v.17 no.10
• /
• pp.923-935
• /
• 2007

In general, deflection limit criteria of bridge design specifications would have been considered based on the static serviceability and structural stability. Dynamic serviceability induced from bridge vibration, as a comfort limit, actually has not been included in the criteria. Thus, it is necessary for dynamic serviceability to be considered in bridge vibration problems and for comfort limit on vibration to be needed for evaluating dynamic serviceability of bridges. In this paper, comfort limits of bridge structures considering the time duration exposed by vibration were examined with frequency and time dependent comfort limits, and they were evaluated by using the vibration signals measured from the existing bridges. Therefore, it is resulted that the time-dependent comfort limit considering the duration of vibration is an efficient estimate for evaluating dynamic serviceability of bridges.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
• /
• 1997.11a
• /
• pp.47-52
• /
• 1997

This study was carried out to investigate effects of fabric properties and the changes of microclimates on comfort sensations and to identify effective varuables on clothing wear comfort sensations. A wied range of nontreated and functionally treated woven fabrics, knits, and nonwoven fabrics and test garments made of them were used as specimens. Linear structural equation was used to analyze causal relation among the variables on a path diagram. The results were as follows: 1. Almost of causal relations among variables were significant excdpt the effects of fabric properties including air permeability and water-vapor permebility on the changes of microclimate temperature. 2. Fabric properties were most effective variables on clothing wear comfort sensations including thermal sensation, subjeceive wettedness, and overall comfort and therefore comfort sensations and fabric properties were identified for improving clothing comfort.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.25 no.8
• /
• pp.1432-1443
• /
• 2001

The purpose of this study is to offer basic data to manufacture superior brassiere, by finding out wearing effect and wearing comfort after select high-functional brassiere and usual brassiere of brassiere on the market, and by analyzing the features of superior brassiere in wearing effect and comfort. The results of this research are as follows; 1) As a result of testing the wearing effect when wear a brassiere, the revision effect of high-functional brassiere was higher than that of usual one. But, from questions on general comfortable feeling. the wearing comfort of usual brassiere was higher in comparison with high-functional brassiere. In the questions for comparison and evaluation, the frequency of hard type-functional brassiere was highest. 2) As a result of examining the wearing effect and comfort of brassiere by each type, the wearing effect of high-functional brassiere was excellent. because of the difference in the size, construction, and material of brassiere, and the wearing comfort of hard type high-functional brassiere were superior relatively.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
• /
• 1997.10a
• /
• pp.108-113
• /
• 1997

In these days, customers require high-quality, high-performance, high-ride comfort for Automobile and then the automotive manufacturers concentrated on study of electrical, high-performance, low-cost of parts and sub-parts. In this paper, for ride comfort estimation PSD(Power Spectral Density) of acceleration at eight test point are measured, and then are calculated with new index of ride comfort. The new index of ride comfort developed for optimal design, real test, applied the actual. It can apply for various fields.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2011.06a
• /
• pp.1557-1558
• /
• 2011

• Science of Emotion and Sensibility
• /
• v.17 no.3
• /
• pp.15-28
• /
• 2014

This research was performed to identify the components and types of comfort foods and to verify gender differences on choosing comfort food in various emotional states. The total of 425 Korean college students participated in this study. The results are as follows. First, most students rated foods that give warmth and relaxation, foods that are reminiscent of happy memories, food that tastes good, were rated as types of comfort foods. On the other hand, external condition and fast food were less likely to be rated as a comfort food. Second, male students reported meat dishes, stew or soup, and alcohol as comfort foods whereas female students reported stew or soup, fruit or vegetable, and meat dishes as comfort foods. Third, the students chose different comfort food in different emotional states. In negative emotions, most students chose alcohol, chocolate, hot (spicy) food, and drinks as a comfort food. But in positive emotions, most students chose chicken as comfort foods. While male students chose alcohol as high ranking comfort food, female students chose various foods as their comfort food. The limitations of this study and suggestions for future studies were discussed.

• Journal of Korean Society for Atmospheric Environment
• /
• v.32 no.6
• /
• pp.624-632
• /
• 2016

Attention plays vital role either students academic performance in classroom or work performance of workers. This study was accomplished among elementary school students of elementary school classroom for two years. Three experiment cases were designed based on the Predicted Mean Vote (PMV) indexes. Thermal environment and PMV were directly monitored; Thermal Sensation Vote (TSV) and Comfort Sensation Vote (CSV) were analyzed based on survey data; and attention was analyzed for different comfort level using FAIR program. PMV, TSV and CSV were varied with the change in thermal environment and there was not noticeable gender influence on impact. The good correlation between thermal environment, PMV, TSV and CSV confirmed the impact of thermal environment on indoor comfort. There were different impacts on attention with comfort conditions. Academic attention of low attention group i.e. weak students, can be improved by providing the comfort environment. Thermal environment influences the comfort and the comfort influences the attention, it is possible to assess the impact of thermal environment on attention in further.

• Women's Health Nursing
• /
• v.11 no.2
• /
• pp.129-134
• /
• 2005

Purpose: This study was purposed to survey pain, efficacy, and comfort during the first stage of labor and to identify correlations among them. Method: The subjects were 116 laboring women who were admitted to a baby-friendly hospital recommended by UNICEF for breast feeding. Data were collected using a structured questionnaire composed of labor pain, labor efficacy, and labor comfort with 10 cm visual analog scale respectively. The data were analyzed by frequency, Pearson's correlation, and ANOVA. Result: Labor pain, labor efficacy, and labor comfort in latent phase were positive correlation with them in active phase. The more pain, the less labor efficacy and the less comfort in latent phase. and the more pain, the less comfort in active phase. Labor efficacy was positively correlated with labor comfort in both phase. Lastly, women supported by their husbands had significantly higher labor pain than women supported by their mothers. Conclusion: The results suggest that nurses develop a labor efficacy program for pregnant women and their mothers or spouses.

• Journal of IKEEE
• /
• v.19 no.4
• /
• pp.603-609
• /
• 2015

Thermal comfort is one of the fundamental aspects of indoor environmental quality and it is strongly related to occupant satisfaction and energy used in building. In this paper, we proposes smart comfort algorithm that save energy and provide a pleasant and comfortable environment for workers by the indoor comfort conditions(Predictive Mean Vote) detection and controlling the temperature and humidity, air flow. Simulation results, heating and cooling control of the thermal comfort control can be compared with the existing general air conditioners reduces the power of 0.5kW and indoor comfort can be maintained. Also, It showed a 49.2% improvement in the light by lighting control algorithm.