• Journal of Korea Multimedia Society
• /
• v.15 no.2
• /
• pp.258-265
• /
• 2012

Our country is suffering from many human victims and property damages caused to occur great and small tidal waves in southern areas every year. Even though there were progressing many researches for storm surges, it was required more researches for detection of tidal wave and prevention system of its which can be applied in practical living fields. In this paper, we propose the disaster prevention system that can approximately detect a dangerousness of coast flooding and number of overtopping per time based on images of CCTV considering actual field application. And if it is detected a hazard of flooding of coast, the proposed detection system for tidal wave based GIS is quickly informed the areas of flooding to manager. The analyzing results of CCTV image of this proposed are derived from difference images between photos of fine day and photos or videos which are taken for the typhoon which is called "DIANMU" at our laboratory.

• Korean Journal of Adult Nursing
• /
• v.23 no.6
• /
• pp.595-604
• /
• 2011

Purpose: This study was conducted to examine the effects of the nurse-led one-on-one discharge education on the levels of symptom experience and self-care compliance among patients with chronic obstructive pulmonary disease (COPD) who had not previously participated in an education or respiratory rehabilitation program. Methods: This study used a quasi-experimental pre-and post-test design with nonequivalent control group. Sixty seven hospitalized patients (34 for experimental and 33 for control groups) were recruited from in-patient units of a general hospital from August to November, 2010. The one-on-one education session of symptom management and daily self-care was administered to experimental group for 50 minutes along with a follow-up phone call. Self-administered questionnaire was administered at the pretest and at 1 month after discharge. Results: The subjects were 67.43(${\pm}10.24$)years old in average. The mean differences of symptom experience (t=3.39, p=.001) and self-care compliance (t=-38.13, p<.001) in the experimental group was significantly higher than those of the control group. Conclusion: Nurse-led one-on-one discharge education was effective in reducing the level of symptom experience and enhancing self-care compliance at home within one month after discharge. Therefore, this form of one-on-one education provided by nurses might be applicable effectively for COPD patients who do not have access to respiratory rehabilitation programs.

• Membrane Journal
• /
• v.22 no.4
• /
• pp.251-257
• /
• 2012

For the separation and recovery of n-pentane from nitrogen environment, the poly (dimethyl siloxane) (PDMS) composite membranes supported by polyetherimide (PEI) hollow fiber membranes were prepared. To characterize the gas separation properties of the resulting membranes, the permeance of n-pentane and nitrogen, concentrations of permeate and retentate, and recovery ratio were measured for n-pentane and nitrogen mixtures. The permeance of n-pentane and nitrogen, 2485.3 and 9.9 GPU, were observed respectively. As the stage cut decreases and the feed concentration increases, the n-pentane concentration in permeate tends to increase. In the meanwhile, the recovery efficiency tends to increase as the stage cut increases and the feed concentration decreases.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 2009.11a
• /
• pp.83-83
• /
• 2009

우수한 압전성을 가지는 PZT는 인체에 유해한 다량의 PbO을 함유하여 심각한 환경문제를 야기함은 물론 제조 공정 중 PbO 휘발 억제 시설 구비에 따른 경제적 부담 등 문제점이 지적되었다. 따라서 환경오염 및 가격경쟁력을 갖추기 위해 현재 무연 조성 세라믹스에 대한 많은 연구가 진행되고 있다. 최근 비납계 압전 세라믹의 연구는 비스무스 레이어형과 페로브스카이트 형 비납계 세라믹스의 연구가 활발히 진행되고 있다. 특히 $(Na,K)NbO_3$ 계는 페로브스카이트 구조를 가지는 비납계 세라믹으로 현재 많은 연구가 진행되고 있다. 이 물질은 PZT계와 유사하게 상전이(morphotropic phase boundary:MPB)영역을 가지고 있 으며 이 영역에서 높은 압전 특성을 보여주고 있다. 최근 $Na_{0.5}K_{0.5}NbO_3$에 $LiTaO_3$를 치환하여 우수한 압전 특성을 지니는 조성이 개발되고 있지만, 보통 소성법으로 제조된 세라믹스는 PZT계 세라믹스와 비교하여 특성이 떨어진다. 본 연구에서는 압전성이 우수한 $(Na_{0.44}K_{0.52}Li_{0.44})(Nb_{0.90}Sb_{0.06}Ta_{0.04})O_3$ 조성에 도너 도핑과 억셉터 도핑을 한 다음 전기기계결합계수, 압전상수, 유전상수의 변화를 평가하고, hardener 와 softener 특성이 본조성에서 나타나는지를 관찰하였다. 실험방법은 보통 소성법을 사용하였으며, 분쇄와 혼합은 직경 3 mm zirconia ball을 사용하여 볼밀 하였다. $850^{\circ}C$ 에서 5h 하소 후 $1100{\sim}1200^{\circ}C$ 에서 소결하고, 두께 1 mm로 연마한 다음 silver paste를 $650^{\circ}C$ 에서 소부하여 전극을 형성하였다. 제작된 시편은 $90^{\circ}C$의 실리콘유에서 3~4 kV/mm의 전계를 가해 20분간 분극 처리를 수행하였다. 제작된 시편의 압전전하 상수 값은 d33-meter(APC-8000)를 이용하여 측정하였고, 유전율, 전기기계결합계수 및 기계적품질계수 등은 임피던스 분석기 (impedance/gain phase analyzer)를 이용하여 특성을 측정 하였다. 또한 전압-분극 특성의 평가에는 강유전특성 측정기(ferroelectric tester: Precision-LC, Radiant Technologies, USA)를 이용하였다.

• Industry Promotion Research
• /
• v.5 no.4
• /
• pp.63-72
• /
• 2020

This study aims to suggest the direction for improving the mental health of married women by analyzing the relationship between married women's life stress, life satisfaction, self-elasticity, and coping stances. For this study, 200 married women in their 30s~60s living in Seoul, Incheon, and Gyeonggi-do were surveyed on January 2~15, 2020, and the results were analyzed using multiple regression and regression analysis. As a result of the study, it was found that the main causes of life stress felt by married women were economic problems, relationships with their children, and conflict between mother in law and daughter in law. By analyzing the relationship with life satisfaction, it turned out that life stress had a relationship with life satisfaction, which affected the decline in their life satisfaction. In addition, it was verified that the self-elasticity and coping stances had a partial mediating effect in the relationship between the life stress and life satisfaction of married women. Accordingly, improving self-elasticity and coping stances will likely reduce the life stress of married women and boost their life satisfaction.

• Korean Journal of Child Studies
• /
• v.38 no.1
• /
• pp.185-203
• /
• 2017

Objective: The present study examined the perspectives of grandparents raising their grandchildren in an attempt to better understand grandparents' child-rearing experience while providing kinship foster care to their primary-grade grandchildren. Methods: Data were collected through individual in-depth interviews with eight grandparents who have raised one or two primary-grade (ages 8-10) grandchildren using a qualitative approach. Results: First, the participants viewed the reason for their kinship foster care as a failure for caring for their own children and accepted the present grandparent-care provision as their responsibility. Second, the participants communicated constant struggles with their own health and grandchild-care as well as positive/negative emotions associated with the care provision. Third, most of the participants did not fully understand the developmental needs of their primary-grade grandchildren. Fourth, the participants articulated concerns for their primary-grade grandchildren's learning, peer interactions, school adjustment, and extra-curricular activities. Lastly, the participants all agreed on hoping to raise grandchildren with good personality traits as members of a society and to have them fill the gap from the loss of their parents. Conclusion: Although most participants accepted the current circumstances as their obligation, they still noted difficulties in child-care provision. Given the developmental needs of grandchildren and the resource needs of grandparents, proper and continuous intervention approaches should be developed/provided.

• Journal of Acupuncture Research
• /
• v.27 no.4
• /
• pp.195-202
• /
• 2010

Objectives : This study was performed to report adverse events in Ojeok-san extract powders RCT. Methods : 180 patients with LBP were randomized into groups for a double blind, placebo-controlled clinical study. They received Ojeok-san simple Extract, Ojeok-san complex Extract or placebo in powders, orally dissolved 3times a day for 4weeks. During 4weeks, we researched the symptoms and duration of adverse events and Digest ability, Milk hypersensitivity, Starch hypersensitivity, Caramel hypersensitivity, West-med hypersensitivity, Herb-med hypersensitivity in patients who had adverse events. Results : 52patients(28.9%) had adverse events and of them 44patients(28.9%) had lost adverse events naturally. But 5patients(2.8%) were withdrawn from the research because of the adverse events. Most of the symptoms of adverse event was Gastrointestinal symptom(88.3%) and adverse events frequency was not different from Ojeok-san simple Extract, Ojeok-san complex Extract and placebo. Conclusions : Ojeok-san extract powders had adverse events no different from the placebo, which shows that it is a safe drug.

• Journal of Acupuncture Research
• /
• v.26 no.6
• /
• pp.225-239
• /
• 2009

Objectives : To establish a well organized and systematic oriental medicine classification of headache, the western and oriental medicine diagnosis and treatment systems of headache were reviewed. Methods : The history and development process of western medicine classification of headache were studied. A literature review of oriental medicine classification of headache was done. The characters of each classification systems were assessed. Results : In western medicine, many international societies concerning headache have been established. Through these societies, a classification of headache which can be used by both researchers and practitioners has been suggested. And the suggested classification system is highly recommended to be used in studies in order to increase utilization. As data is accumulated, new versions of the classification system were updated. But in the case of oriental medicine, various classification systems of headache are presented in numerous literatures. But the effort to unify and systemize the oriental medicine headache classification has been in lack. Conclusions : Establishment and utilization of a standardized oriental medicine headache classification system, based on various classifications and detailed descriptions is needed.

• The Research Journal of the Costume Culture
• /
• v.23 no.4
• /
• pp.661-672
• /
• 2015

In this study, nine scarf designs expected to be effective for accent design for the fashion style of new senior women were suggested by reflecting purchase behavior and scarf preference after conducting surveys and an analysis by targeting 136 new senior women in order to propose scarf design-matching with the preferences of new seniors. As a result of the study on the scarf purchase features of new seniors, it was revealed that the purchase time for scarves was mainly autumn and winter, even though it is regardless of season, and in spring and summer, they seldom purchased scarves. The purchase frequency was four times a year, and what they first thought of at the time of purchase was represented in the order of color, design, and the material of the scarf. They most preferred department stores, mixed and achromatic colors, cotton and silk fabrics, natural and geometric patterns, and long scarves of a rectangular shape. In the case of the consumer attributes of scarves, it was revealed that $50^{th}$ desired more individuality-oriented, unique scarf designs than $60^{th}$, and $60^{th}$ desired scarf designs with convenient management considering others' attention compared with $50^{th}$. As concepts for scarf designs, the aspects of individuality, co-existence, and maturity were extracted by reflecting the features of new senior women, and a total of nine scarf designs were suggested by developing three sub-designs for each concept.

• Korean Journal of Childcare and Education
• /
• v.6 no.2
• /
• pp.117-133
• /
• 2010

The purpose of this research is to find out whether children's self-efficacy can be improved by sensory activities devised to encourage spirituality. The survey involved 36 children aged 4 to 5. To measure the subjects' self-efficacy, Jeon Inok(1996)'s tool was used. The 18 members of the experimental group attended a program which was dedicated to promoting spirituality by using sensory activities. The program was administered three times a week for four weeks, totaling 12 sessions, each of which contained a type of activity and lasted about fifty minutes. To the 18 members of the control group, the standard child care curriculum was applied. The levels of the subjects' self-efficacy were measured twice, both in the same way, before and after the children participated in the program. The finding reveals that the program which was designed to boost children's spirituality through sensory activities has positive effect on children's self-efficiency - cognitively, socially, emotionally, and physically. The self-efficiency level in the experimental group significantly increased by t=7.17(df=34, p<.001) compared to the control group. So, it can be said that the program dedicated to improving spirituality using sensory activities is more effective than the standard child care curriculum.