• 한국주거학회논문집
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• 제7권2호
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• pp.29-44
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• 1996

This study investigated the Present traditional Korean farmhousing and Past housing (from 1928~1956) based on a survey of 23 Korean women from Kyongki Province. It was primarily concerned with a Comparison of the present and past housing ; the size and plan of the house and finishing materials of Anbang(The masters bedroom : ondol) and the kind of furniture. lighting and heating in the Anbang. I was also interested in identifying the socio-demographic and physical variables that influenced the housing, past and Present. Bibliographical studios. cultural approaches and field surveys with tape recordings and questionnaires were used to collect the data. The results showed that the former Housing(averag ; 54 years ago) was very poor. Most homes lacked sufficient space. furniture and experienced a shortage of fuel. The most decisive difference from the present was the large family size. It would be beneficial to make a similar study in both the southern and northern regions of Korea.

• 한국주거학회논문집
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• 제14권5호
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• pp.105-116
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• 2003

The purpose of this study is to suggest the method of prevention of staircase accidents, and to make housing environment better through researching the dimension of a housing staircase for Korean. The scope and method of this thesis is to investigate the dimension limits of a staircase (slope, minimum width of tread, maximum height of riser), and to analyze the characteristics of foot condition (jutting rate, foot angle, ball joint, nosing clearance, clearance distance) using the experiment which takes a photograph of foot motion during walking stairs. The results of this thesis are as follows. The slope of a staircase in house is $32.3^{\circ}$$^{\circ}$-$42.1^{\circ}$$^{\circ}$. The riser should be less than 190 mm. The minimum size of tread is 210 mm and proper size is 270 mm.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2003년도 정기총회 및 추계학술대회
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• pp.283-288
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• 2003

This study has analyzed the environmental characteristics of Cheong-Ju city and the priority of residential choice elements by residents. The results of analysis are as follows. 1) The rate of housing supply in Cheong-ju city is low at 80.2%, concentrated on small sized apartments. Furthermore educational and traffic facilities are much insufficient. 2) While residential choice in Chong-ju is heavily characterised by educational surroundings, it is less affected by both economy such as housing prices, the value of investments and accessibility to public transportations, distance to working places. 3) It is affected by residents' general characters like the sell age, life cycle, education level, properties, home ownership, number of room and type of house they want.

• 환경위생공학
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• 제13권3호
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• pp.133-140
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• 1998

The food wastes from a refectory and an eating house were heated in domestic microwave oven(700W) equipped with a fan and the drying rates and destruction of microorganisms were investigated. The drying rate was decreased with the size of food waste and the food wastes in polypropylene basket were dried faster than that on glass dish. The rate was increased with lower initial moisture content. Death rate of microorganisms was also decreased with the size of food waste. Ninety eight percent of reduction in viable cell numbers for the 400g of food waste could be achieved in 240sec of microwave irradiation. The growth of microorganisms in food wastes after microwave irradiated was observed at $32^{\circ}C$ and 95% relative humidity after 7days and the cell numbers in microwave irradiated food wastes were found to be 1/2 ~ 1/20 of the numbers in untreated wastes in accordance with the mass and the length of exposed time to microwave. To minimize the moisture and microorganisms in food wastes, the use of microwave oven are recommended.

• 대한가정학회지
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• 제30권3호
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• pp.159-175
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• 1992

The purpose of this study is to identify residential stress and to analyse the factors affect on it, based on the comprehensive theoretical model. For this purpose, 822 housewives were collected from the households in Seoul and Chonju-City. The main results obtained are as follows. 1. A significant proportion of the urban households surveyed are observed to suffer from residential stressors. The components of residential stressors are housing facilities, family living space, social interaction with the neighborhoods, physical condition of house. 2. Among the factors that affect residential stress the most important household environment factors are, the level of family controllability, which is followed by the family adaptation ability, the size of living space, the level of life satisfaction, and the type of housing tenure. The results of this study implies that residential stress is associated with not only residential size but also the level of housing facilities and social interaction. Overall upgrading of residential quality requires efficient allocation of living space and facilities on the basis of resident's needs. For instance, homeowners want more living space and renters want higher level of residential facilities.

• 한국생활과학회지
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• 제7권2호
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• pp.161-169
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• 1998

The purpose of this study is to find some major factors which can be used as basic design guideline for the elderly housing as the comfortable dwelling circumstances to keep life as self-reliant and secure as possible in their life. The subjects for this study were 200 elderly women in Taegu, data were collected through an individual visiting interview from 29th, Oct. to 15th, Nov., 1997. The major findings are as follows: 1) The elderly women preferred to live 30.3 pyung as the house size, and they desire to live with the married son's family in urban areas. 2) The evalution for the dwelling circumstance was unsatisfatory on the whole. All the preferred housing characteristics were different from the current housing characteristics. The comfortability of dwelling was least satisfied while the space size was most satisfied.

• 한국입자에어로졸학회지
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• 제14권2호
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• pp.35-40
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• 2018

Vertical particle size distribution, total particle concentration, wind velocity, temperature and humidity measurement was performed with a drone. The drone was equipped with a wind sensor, house-made optical particle count(Hy-OPC), condensation particle counter(Hy-CPC), GPS, Temperature, Relative Humidity, Pressure and communication system. Base on the wind velocity and the particle size vertical distribution measurement with drone, the particle mass flux was calculated. The vertical particle distribution showed that the particle number concentration was very strongly correlated with the relative humidity.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2002년도 추계학술발표대회
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• pp.321-326
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• 2002

To design mechanical ventilation for bathroom of apartment houses where air supply and exhaust are taken Into consideration, mock-ups of ventilation systems, widely used in bathroom of apartment houses with an area of 100$m^2$, were made and installed in a laboratory, These ventilation mock-ups were available for control of air supply and exhaust, and the size of supply openings were 40cm$\times$1cm, 40cm$\times$3cm, 40cm$\times$5cm. They were installed at five positions, spaced 40cm at a height of 25cm from the floor. and the position of exhaust fans were four corners and center Exhaust fan established each one on corner of the ceiling and one in center. As result that measure ventilation effect by each condition, size of hole that supply air is big, and ventilation effect took effect to be good establishment location is low, Also, distance of exhaust fan is far with hole that supply air, ventilation effect took effect by superior thing.

• 가정과삶의질연구
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• 제22권5호
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• pp.283-292
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• 2004

The purpose of this study was to examine the determinants of expenditure adequacy of eldery households. Data for this study were collected from 2002 House Income and Expenditure Survey of Korea National Statistical Office, which is consisting of a sample of 918 eldery households. Expenditure adequacy was investigated by the Spending to Income ratio and Expenditure to Minimum standard of living ratio. The results showed that 48% of households spent more than 100% of their taken-home income or less than the minimum standard of living. Multiple logistic regression was used to investigate the determinants of expenditure adequacy. Gender, age, education, job status, family size, and level of income were significant determinants of spending to income ratio and Expenditure to Minimum standard of living ratio. Family size had negative effect on expenditure adequacy, householder's job status and the level of income had positive relationship with it.

• International Journal of Contents
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• 제16권4호
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• pp.26-38
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• 2020

Determining the optimal levels of the technical attributes (TAs) of a product to achieve a high level of customer satisfaction is the main activity in the planning process for quality function deployment (QFD). In real applications, the number of customer requirements for developing a single product is quite large, and the number of converted TAs is also high so the size of the house of quality (HoQ) becomes huge. Furthermore, the TA levels are often discrete instead of continuous and the product market can be divided into several market segments corresponding to the number of HoQ, which also unacceptably increases the size of the QFD optimization problem and the time spent on making decisions. This paper proposed a genetic algorithm (GA) solution approach to finding the optimum set of TAs in QFD in the above situation. A numerical example is provided for illustrating the proposed approach. To assess the computational performance of the GA, tests were performed on problems of various sizes using a fractional factorial design.