• Journal of the Korean Chemical Society
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• v.43 no.1
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• pp.1-7
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• 1999

Metal colloidal particles have been prepared by a photo-chemical process in an aqueous solution containing semiconductor nanocrystallites. Metal colloidal particles produced in CdS and AgBr exhibit different absorption spectra. Au particles produced in solution with CdS show typical Au plasmon resonance absorption spectra. On the other hand Ag particles in solution with AgBr shows surface plasmon resonance absorption spectra which are red-shifted, as compared to that of a dispersion of homogeneous Ag colloidal particles in the same host. The extent of red-shift depends on the UV illumination time. This phenomenon is interpreted within the context of effective medium theory for small volume fractions. From the theory, a metal coated particle predicts Ag plasmon resonance, red shifted with respect to 400 nm that would be associated with a silver particle in solution. The absorption peak position is very sensitive to the coating thickness.

• The Korean Journal of Rehabilitation Nursing
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• v.17 no.1
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• pp.1-9
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• 2014

Purpose: The purpose of this study was to confirm the effects of auricular acupressure therapy on insomnia and nocturia in the elderly. Methods: This study was a nonequivalent control group pre-post test design. Data collection was conducted from July 1 to August 31, 2013. Subjects were set for totally 36 people with 18 people in the experimental group and 18 people in the control group among the elderly over the age of 60 in silver town, welfare center, and senior citizen center where are located in Seoul area. For the experimental group, auricular acupressure therapy was applied two times during 5 days by fixing it to auricular reaction site with tape using Sinapis alba L. seeds. With SPSS/WIN 19.0 program, the collected data were analyzed. Results: Compared to the control group, the sleeping score and sleeping satisfaction were improved and nocturia frequency was lowered in the experimental group who applied auricular acupressure therapy. Conclusion: Auricular acupressure therapy was considered to be likely useful therapeutic method for the effects of relieving nocturia and insomnia in elderly.

• Journal of the Korean housing association
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• v.15 no.1
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• pp.129-140
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• 2004

The purpose of this study was to identify the general characteristics of test subjects in association with three planned housing alternatives in different focus level of work opportunities, leisure activities and services. Subjects used in the study were people in their 50's who were surveyed in 2002. A total of 464 subjects were selected from 556 samples. Statistical significance was found between the preferred housing alternatives and the subjects' background including education level of the subjects and their spouses, monthly income, assets, subjective economic capabilities, and housing size. However, there was no statistically significant differences in recognition of housing problems for later life among groups. Groups selecting different planned housing alternatives showed statistically significant differences for some features of the senior housing. From these results, it is proposed that various designs based on the levels of work opportunities, leisure activities, and services for the senior housing should be provided to satisfy the demands.

• Journal of The Korea Institute of Healthcare Architecture
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• v.26 no.4
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• pp.49-57
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• 2020

Purpose: In our country, the aged population accounted for about 13% of the total population in 2018. In addition, it is expected to exceed 20% in 2026, entering an super-aged society. However, the senior welfare housing in Korea currently accommodates only 0.08% of the elderly population, and the increasing amount of the elderly population is very small. Accordingly, this study aims to analyze the causes of supply shortages and to propose directions for revitalizing the supply of welfare housing for the elderly in the private sector. Methods: First, the causes and problems of the poor supply of welfare housing for the elderly were analyzed. Next, the direction was proposed through institutional and case-by-case surveys and expert interviews. Results: It suggested directions such as legal and institutional improvement, inducing the use of REITs, preparing policies to support consumers, allocating a certain percentage of senior welfare housing for the elderly in the reconstruction project, improving awareness of monthly living expenses, and re-discussing sales permits. Implications: Experts said that the direction proposed in this study can have a positive effect on supply activation. However, there were many opinions that re-discussion on permission for sales was necessary due to the excessive impact of the inability to sell. In addition, further research is needed for specific application of the proposed direction.

• Journal of the Ergonomics Society of Korea
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• v.33 no.5
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• pp.407-422
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• 2014

Objective: The purpose of the study is to develop quantitative usability evaluation criteria for senior-friendly autonomous transportation robot. Background: The Republic of Korea has become the most rapidly aging society, and is anticipated to enter the post-aged society in 2026. To raise the quality of life of a senior with limited mobility and to reduce the burden of caregivers, many high-tech assistive products with information technologies are developed nowadays. The senior-friendly autonomous transportation robot is one person robot vehicle to move a senior to the destination for hospitals, nursing homes or silver town complex. With built-in navigation system and environmental monitoring censors, it automatically seeks the path to the destination and avoids collision to obstacles and pedestrians on the way. Due to the early stage of the product, few usability studies in this field have been done, mostly on general service robots to assist seniors, power wheelchairs and delivery robots. ISO and KS standards for the service robots are focused on safety. Method: Based on the reference usability index, the early draft of the usability evaluation questionnaires was developed. After small group tests and interviews, the experts modified the initial draft to the Usability Evaluation Criteria for Senior-Friendly Autonomous Transportation Robot (UEC-SFATR). Result: UEC-SFATR consisted of 4 subscales - Safety, Controllability, Efficiency and Satisfaction. All of the 4 subscales of UEC-SFATR were passed the reliability criteria by 4 groups of seniors, divided by gender and familiarity of smart-devices. Conclusion: UEC-SFATR covers wider area of user experiences of the SFATR and is a good measurement tool to help both the users and developers of the robot. Application: This study provides guide to the future product development and product competitiveness evaluation by quantifying user experiences for the SFATR.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.17 no.3
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• pp.183-188
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• 2017

This paper is for the a study on home healthcare system for a patient using SAW Tag. This system is useful when there's a patient in home. Many patients are wounded in restroom. But restroom is very private place and nobody want to be disturbed here. The place where the patient is most injured in the house is the toilet, and it is the point where the privacy of the individual should be kept and the patient's condition should be checked and cope with in case of emergency. And using saw tag, we can calculate position and ID through reflected rf signal. Therefore we propose a general home healthcare system. The management system utilized a seat bed system to monitor at-home patients. The system mounts a bio-signal measuring unit on a toilet seat, measures a bio-signal from the bio-signal measuring unit, and the measured bio-signal is transmitted to the main server through the user's smart phone. With proposed system, we can expand operation area to silver town where many patients are cared. In this paper we developed sensor system and saw tag positioning system and showed the result.

• Korean Journal of Human Ecology
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• v.9 no.3
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• pp.5-21
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• 2006

The purpose of this study was to grasp the consciousness of adolescents about their future in old aged housing. This research was executed with a questionnaire survey method. Data samples were collected from 255 students who finished first grade curriculum in high schools in Chonbuk province and Seoul city. The results were as followed. First, a healthcare plan was very highly recognized by students, and they wanted to live as couples or single in their old age. Second, the respondent students recognized elderly housing as a home for the aged, a silver town and nursing home. 72.1% of the respondents preferred a single detached house as an elderly house form. They preferred an elderly housing district with well provided convenient facilities for daily living. They wanted to live in the country or rest areas for the aged. They preferred an interior space composition with LDK with 2 bedrooms. 52.0% students wanted a neighborhood for their friends to live together. Third, 28.3% of the respondent students thought the appropriate time to move in elderly exclusive housing was 66-70 years old. And when their physical condition worsened or they needed care, they would. want to move into that housing. Also, they wanted the most convenient facility and a medical care facility in elderly exclusive housing. Forth, students' space design needs for elderly were high, more than 4 points. It was especially needed safety in space design, and this grade was 4.56(,53) points. Also the needs of safety and the convenient facilities.equipments were statistically significant by boys and girls.

• Journal of Environmental Health Sciences
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• v.32 no.5 s.92
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• pp.387-397
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• 2006

This study was performed to investigate the characteristics of indoor air quality(IAQ) in 91 public facilities from September 2004 to March 2005 in the Honam province(Chonnam, Gwangju). The measured air pollutants are $PM_{10}$, formaldehyde(HCHO), CO, $CO_{2}$ and total suspended bacteria(TSB), the maintenance standard materials of IAQ management law established by ministry of environment in Korea(MOE). We also surveyed establishment and operation of ventilation equipment. It was measured $1.2m{\sim}1.5m$ on the floor between 8 o'clock AM and 7 o'clock PM. As the result, $PM_{10}$ and CO was showed the highest concentration, $188.89{\mu}g/m^{3}$, 8.67 ppm, at the indoor parking. The concentration of HCHO was the highest in large store and steamer room. The concentration was respectively $118.70{\mu}g/m^{3}\;and\;113.21{\mu}g/m^{3}$. The concentration of $CO_{2}$ was the highest at the reading room of the library on the condition of natural ventilation. The concentration of $CO_{2}$ was 1,816 ppm and higher than the IAQ standards established by MOE. The TSB was just measured in the hospital and silver town. It was the highest at the admission room of hospital. The concentration of TSB was $766CFU/m^{3}$. The public facilities of this study were not exceed each maintenance standards except $CO_{2}$ but it was surveyed that the management will be needed about some air pollutant according to target facilities.

• Journal of the Korean Society of Clothing and Textiles
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• v.37 no.5
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• pp.691-703
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• 2013

The costume culture of ladies in late Goryeo is an important and rare source for cultural fashion souvenir design. This study investigates the historical costume design sources of late Goryeo to suggest high quality traditional and practical ornament souvenir designs for female dolls as well as examples of coordination with doll costumes. The costume culture of late Goryeo contained golden Buddhism and a revival of $12^{th}$ century Goryeo costume characteristic after the period of Mongolian influences from the Yuan. The main sources for doll ornament designs are $14^{th}$ century Buddhist paintings, a few ornament relics of Goryeo, ancient literature, and portraits of ladies in the $14^{th}$ century that originated from five doll's traditional ornaments (lotus hairpin, cloud-shaped hairpin, Buddhist flower hair ornament, vase-shaped Binyeo, and bell of animalhuman face) and three wig designs (wigs from Buddhist paintings and portraits, and hairpiece) with bleached gilding silver, silk, various gemstones and synthetic hair. These doll ornament and wig designs imply the symbol of Buddhism, exorcism, and costume culture of $14^{th}$ century Goryeo ladies that can be matched with two doll gowns, half-sleeved jacket, skirt, two Jogoris, apron, under trousers as formal, semi-formal, and town-wear according to the T.P.O of late Goryeo; in addition, five ornaments can be used as owner's ornaments. The partial changing colors and materials due to the characteristics of doll ornament goods as well as better communication between researcher and constructor remain to be improved.

• Journal of the Korea Society of Computer and Information
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• v.16 no.5
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• pp.173-183
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• 2011

The purpose of this study is to suggest the policy implications through the analysis on the effects of social workers' negative reactions for client violence on burnout. Especially, This study is focused on identifying the moderating effects of demographic characteristics and institutional confrontations system. This study was carried out based on survey of social workers on social welfare facilities located in G metropolitan city and J province. The major findings can be summarized as follows. First, Social workers' negative reactions toward client violence affect on burnout significantly. Second, demographic characteristics and institutional confrontations system moderate the relationship between social workers' negative reactions toward client violence and their burnout. This study suggested some implications basing on the analytical results.