• Journal of the Korean Home Economics Association
• /
• v.42 no.9
• /
• pp.37-51
• /
• 2004

The purpose of this study was to examine the effects of household characteristics on savings account, savings insurance, and private financial clubs. Data for this study were collected from the 2001 Household Income and Expenditure Survey consisting of a sample of 1,801 salary and wage earners' households. Tobit analysis was peformed to investigate savings accounts, savings insurance and private financial clubs. The results showed that 76% of households held savings accounts, 77% savings insurance, and 12% non-institutional assets in private financial clubs. Sender, age, education, job, spouse employment, family type, location, home ownership, number of children, and family income were significant determinants of investment in savings accounts, savings insurance, and private financial clubs. Family income was the most powerful variable.

• The Bulletin of The Korean Astronomical Society
• /
• v.39 no.1
• /
• pp.34-34
• /
• 2014

We investigate the constraints on the matter density ${\Omega}m$ and the cosmological constant ${\Omega}{\Lambda}$ using the gravitational lensed QSO (Quasi Stellar Object) systems from the Sloan Digital Sky Survey (SDSS) by analyzing the distribution of image separation. The main sample consists of 16 QSO lens systems with measured source and lens redshifts. We use a lensing probability that is simply defined by the gaussian distribution. We perform the curvature test and the constraints on the cosmological parameters as the statistical tests. The statistical tests have considered well-defined selection effects and adopt parameter of velocity dispersion function. We also applied the same analysis to Monte-Carlo generated mock gravitational lens samples to assess the accuracy and limit of our approach. As the results of these statistical tests, we find that only the excessively positively curved universe (${\Omega}m+{\Omega}{\Lambda}$ > 1) are rejected at 95% confidence level. However, if the informations of the galaxy as play a lens are measured accurately, we confirm that the gravitational lensing statistics would be the most powerful tool.

• Journal of Home Health Care Nursing
• /
• v.17 no.2
• /
• pp.144-155
• /
• 2010

Purpose: This study investigated the factors affecting the quality of life (QOL) of the primary caregivers of home health care patients. Method: The subjects were 110 primary caregivers of patients who were receiving home health care from two home health care centers affiliated with general hospitals in Seoul. Data collection was conducted using five questionnaires. Results: Positive relationships were evident between QOL and social support and perceived health status of the primary caregiver. Negative relationships were evident between QOL and burden and depression. Multiple linear regression analysis for QOL revealed that the most powerful influencing factor was social support. Social support, burden, and depression explained 34.3% of the variance. Conclusion: Burden, depression, and social support are related with QOL of primary caregivers of home health care patients. Nursing intervention strategies directed at this caregiver population are needed.

• Journal of Families and Better Life
• /
• v.17 no.4
• /
• pp.47-60
• /
• 1999

The predictions derived from Sternberg's triangular theory of love were tested in order to explain the love relationships in marriage among Korean people. We were first interested in whether the subjective love experiences of respondents could be characterized by three components: intimacy passion and commitment we then attempted to examine the time course of each component as the marital relationships continued. 16897 married men and women were asked to complete the questionnaire including the love scale developed by researchers based on Sernberg's and other researchers' work. The results are as follows: First the love experienced by Korean men and women in their marriage can be classified by 3 dimensions: intimacy passion and commitment. Secon intimacy is the most powerful indicator of love in marital rlationships follows bgy passion and commitment. Third each of the 3 dimensions of marital love showed a U-shaped pattern as the marriage continued. Fourth commitment was more table than the other 2 dimensions throughout the marriage. The resultso f the study showed that Sternberg's triangular theory of love is useful to explain the marital love among Korean people.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
• /
• 1998.11a
• /
• pp.242-244
• /
• 1998

Over the years manufactures have become increasingly aware of the importance of water purity and its effect on the quality of the final product. One of the largest problems that confronts pure water system operators is bacterial recontamination shortly after the water purification equipment. There are several recommended methods of either preventing or recommended methods of either preventing or removing such contamination but most have inherent disadvantages. Drinking water has required new treatment techniques such as ozonation and granular activated carbon(GAC) filtration. Ozone is known to be a powerful oxidant and disinfectant. Therefore it has been found to be necessary for the treatment of taste, odor and color as an oxidant of inorganic and organic compounds.

• Journal of the Korea Institute of Military Science and Technology
• /
• v.13 no.1
• /
• pp.9-21
• /
• 2010

In this paper, optimum design of distributed detection is considered for a parallel sensor network system consisting of a fusion center and multiple passive sonar nodes. Nonrandom fusion rules are employed as the fusion rules of the sensor network. For the nonrandom fusion rules, it is shown that a threshold rule of each sensor node has uniformly most powerful properties. Optimum threshold for each sensor is investigated that maximizes the probability of detection under a constraint on energy consumption due to false alarms. It is also investigated through numerical experiments how signal strength, false alarm probability, and the distance between three sensor nodes affect the system detection performances.

• Journal of information and communication convergence engineering
• /
• v.8 no.4
• /
• pp.443-448
• /
• 2010

The electrical curtain is an electronic product which is most suitable for the sphere of intelligent home network. It provides the basic feature of intelligent home network such as the followings; various functions, powerful control. It also becomes the ideal technology with inexpensive power-line protocol, energy saving and solar power generation. Generally it is a suitable motor for BLDC to move the electrical curtain, because it provides the maintenance without difficulty, long-lived use with good efficiency. On this paper, we proposed the BLDC motor controller designed by CDM(Coefficient Diagram Method) and evaluated its performance with a simulation of the plant, designed the electrical curtain using BLDC motor and powe-line protocol.

• Proceedings of the Korean Institute of Interior Design Conference
• /
• 2004.11a
• /
• pp.84-87
• /
• 2004

The stress from the office environment comes from the most psychological things. Therefore, the purpose of this study is to research the psychological effect of natural element for office worker's psychological stability. This study is focused on the light, sound, air, temperature, plant, and water. Perception of these natural elements through the senses of sight, auditory, smell, and touch is effect on human body and mind directly. The application of natural elements provide a health of office workers. The result will show that, with application of the natural element, the rest space will be more powerful for health of workers. And also combination of natural element and geometric pattern will be very useful to prepare healing environment on the rest space

• Korean Institute of Interior Design Journal
• /
• v.23 no.4
• /
• pp.32-41
• /
• 2014

The purpose of this study is providing a systematic method of exterior, interior finish materials and color scheme for elementary school and the actual color plans of elementary schools in Busan was analyzed to support the study. As a powerful design tool, a finish materials and a color are very effective to alter the perception of a building and a view. Most of the school, a shape and a material of elevations are monotonous and uniform and it makes students are hard to attach to their schools. As a place for learning and school life, the inner space of elementary classroom needs to be considered very important. The new basic guideline for developing and planning of architectural design could be achieved by researching a current plan and a finish material in elementary school. As a result, this study will benefit in planning both the exterior and interior environments of color.

• Proceedings of the KIEE Conference
• /
• 1995.07b
• /
• pp.682-684
• /
• 1995

The most effective way to improve the performance of a fuzzy controller may be to optimize look-up values. Look-up values are derived from processes used input-output scale factors, membership functions, rule base, fuzzy inference method and defuzzification. It is powerful way to modify or organize look-up table values. In this paper, We propose the look-up values self-organizing fuzzy controller(LSOFC). We use the plus-minus tuning method(PMTM), scanning values through the processes of addition and subtraction. We show the efficiency of this LSOFC by the results of simulation for nonlinear time-varying plant with unmodelled dynamics.