• 비파괴검사학회지
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• 제34권3호
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• pp.211-219
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• 2014

Closed cracks are difficult to detect using conventional ultrasonic testing because most incident ultrasound passes completely through these cracks. Nonlinear ultrasound inspection using sub-harmonic frequencies a promising method for detecting closed cracks. To implement this method, a sub-harmonic phased array (PA) is proposed to visualize the length of closed cracks in solids. A sub-harmonic PA generally consists of a single transmitter and an array receiver, which detects sub-harmonic waves generated from closed cracks. The PA images are obtained using the total focusing method (TFM), which (with a transmitter and receiving array) employs a full matrix in the observation region to achieve fine image resolution. In particular, the receiving signals are measured using a laser Doppler vibrometer (LDV) to collect PA images for both fundamental and sub-harmonic frequencies. Oblique incidence, which is used to boost sub-harmonic generation, inevitably produces various surface waves that contaminate the signals measured in the receiving transducer. Surface wave interference often degrades PA images severely, and it becomes difficult to read the closed crack's position from the images. Various methods to prevent or eliminate this interference are possible. In particular, enhancing images with signal processing could be a highly cost-effective method. Because periodic patterns distributed in a PA image are the most frequent interference induced by surface waves, spatial frequency filtering is applicable for removing these waves. Experiments clearly demonstrate that the spatial frequency filter improves PA images.

• 대한가정학회지
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• 제36권12호
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• pp.87-104
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• 1998

This study explores the life quality(LQ) of Korean married women compared to Korean married men's LQ, examines personal factors' and home environmental factors' influences to Korean married women's LQ via psychological factors such as social belongingness, positive emotion, self-esteem, and sense of intemal control in causal model, and explores Korean married women's perceived important factors and perceived enhancement required factors in life. The questionnaire was administered to 941 Korean married women and their husbands who have one or more children in Pusan. The results indicated that: 1. The overal and most sub dimensional LQ of Korean married women mark medium level and were lower than that of Korean married men's. Korean married women who is highly educated, keeps efficient communication with their husband, self-esteem, sense of internal control, social belongingness, and positive emotion, and possess high SES and much available resources shows higher LQ than those who doesn't. 2. The efficient communication with husband and available resources have direct and indirect influences on Korean married women's LQ. The psychological mediatory factors of these two variables' influences on women's LQ are such as social belongingness, positive emotion, self-esteem and sense of intemal control. SES has direct influence only and the educational level has indirect influence via social belongingness only on Korean married women's LQ. All these factors explain 58% of Korean married women's LQ variance. 3. Korean married women rank family health, family reconciliation, husband's success, and children's achievement as the very important factors in life. They also rank husbands success, economic abundant, family reconciliation, family health, and their self-actualization as the very required factors for enhancing the given LQ.

• 한국농촌간호학회지
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• 제2권1호
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• pp.5-13
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• 2007

Purpose: This study focused on the health conditions and satisfaction in day-to-day life of elders using welfare facilities where there is no charge, and thus provides basic data for development of quality services required for health enhancement and a variety of demands from these elders. Method: The participants in the study were 140 elders selected at random from facilities for elders in Taegu. The tools for the study were the Korean Health Status Measure for the Elderly (Shin, H. C., 2002), and Yoon's "Criteria of Older Adults Life Satisfaction"(1982). Results: Differences in life satisfaction were found according to general characteristics of the elders, and that a lack of caretaker professionalism and relationships with other elders, but not the program were scored lower. In the correlation between health status and life satisfaction, it was found that emotional, social function and physical pain showed correlations with life satisfaction. Conclusion: It is necessary for the enhancement of health status of these elders and improvement in life satisfaction that a variety of nursing interventions be implemented.

• 한국보건간호학회지
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• 제26권2호
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• pp.268-279
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• 2012

Purpose: The purpose of this study was to compare and contrast health promoting behaviors, mental health, and quality of life between shift nurses and non-shift nurses and to evaluate factors influencing their quality of life. Method: Data were collected by questionnaires from 113 non-shift nurses and 265 shift nurses who had been working at one of five hospitals in Incheon for more than one year. Descriptive statistics, ANCOVA, logistic regression, and multiple regression were used in performance of data analysis. Results: For shift nurses' mean total scores for health promoting behaviors and quality of life were significantly lower than those for non-shift nurses'(p<.05). Result of logistic regression analyses indicated that marital status (OR=2.092, 95%CI=1.174-3.729) and quality of life (OR=3.397, 95%CI=1.694-6.812) were significant between shift nurses and non-shift nurses. Non-shift work, low stress, provision of health-welfare programs, high score for health promoting behavior, and good mental health status showed an association with better quality of life (explained 48.3% of variance). Conclusion: Educational, policy, and regulatory approaches are required in order to improve mental health and quality of life for nurses, which may be influenced by their unhealthy behaviors such as irregular dietary patterns, while provision of counseling programs may be helpful to enhancement of nurses' mental health.

• International Journal of Computer Science & Network Security
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• 제22권1호
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• pp.1-6
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• 2022

Exploration has always been an instinct of humans, and underwater life is as fascinating as it seems. So, for studying flora and fauna below water, there is a need for high-quality images. However, the underwater images tend to be of impaired quality due to various factors, which calls for improved and enhanced underwater images. There are various Histogram Equalization (HE) based techniques which could aid in solving these issues. Classifying the HE methods broadly, there is Global Histogram Equalization (GHE), Mean Brightness Preserving HE (MBPHE), Bin Modified HE (BMHE), and Local HE (LHE). Each of these HE extensions have their own pros and cons and thus, by considering them we have considered BBHE, CLAHE, BPDHE, BPDFHE, and DSIHE enhancement algorithms, which are based on Mean Brightness Preserving HE and Local HE, for this study. The performance is evaluated with non-reference performance measures like Entropy, UCIQE, UICM, and UIQM. In this study, we apply the enhancement algorithms on 300 images from the UIEB benchmark dataset and then apply the techniques of cascading fusion on the best-performing algorithms.

• 디지털융복합연구
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• 제14권8호
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• pp.515-525
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• 2016

본 연구의 목적은 노인의 우울과 삶의 질의 관계에서 걷기가 어떠한 역할을 하는지 탐색하기 위함이다. 이를 위해 제6기 2차년도(2014) 국민건강영양조사 자료 중 65세 이상 노인 1,263명을 대상으로 하여 연구를 수행하였다. 일반적 특성과 독립변수 및 조절변수에 따른 살의 질 차이를 확인하기 위해 t-test, ANOVA를 이용하여 분석하였으며, 연구결과 성별(t=8.26, p<.001), 나이(t=5.19, p<.001), 만성질환 수(F=37.88, p<.001), 우울(t=9.62, p<.001), 걷기(t=47.36, p<.001)에 따른 삶의 질의 차이가 나타났다. 걷기의 조절효과를 확인하기 위하여 위계적 회귀분석을 이용하여 분석하였으며, 연구결과 걷기는 우울이 삶의 질에 미치는 영향에 있어서 조절효과가 있는 것으로 나타났다. 즉, 걷기 수준이 높아질수록 우울이 삶의 질에 미치는 효과가 감소하는 것으로 해석할 수 있다. 연구결과를 토대로 우울한 노인의 삶의 질을 높이기 위해서 걷기의 증진이 필요함을 제언하는 바이다. 본 연구의 의의는 걷기의 조절효과를 밝힘으로써 삶의 질을 높이기 위한 프로그램 구성의 근거를 제시하였다는 점에 있다.

• 한국학교ㆍ지역보건교육학회지
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• 제20권1호
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• pp.1-14
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• 2019

Objectives: There are few studies which reflects of each generation's own features, of the New Middle Age and the Elderly's hearing status and their quality of life even though the population of old age has been weighted as baby boom generation's entering into old age. This study is to identify the effects of the new middle age and the elderly's hearing status on their quality of life and to prepare the customized health policies for their health promotion and quality of life improvement as well as the base line data for hearing enhancement programs. Methods: This study was analyzed using the data of the 7th term of the National Health and Nutrition Survey of the Disease Management headquarters. Out of 8,150 adults over the age of 50 who participated in the hearing test, 3,306 were selected and analyzed. Results: At the result of identifying the correlation of hearing status and the quality of life between the New Middle Age and the Elderly, it was confirmed that hearing loss affects low quality of life. The average of quality of life between the New Middle Age and the Elderly was 0.95 and 0.85 each, resulting in higher quality of life in New Middle Age than in the Elderly. The factors affecting the quality of life of the New Middle Age were the level of the education, household income, the type of health insurance, subjective health status. The factors affecting the quality of life of the Elderly were gender, the type of health insurance, subjective health status. Conclusion: Hearing loss of the New Middle Age and the Elderly affects their low quality of life. Therefore the development and the provision of policy program is needed, so as to maintain and manage hearing through age-specific health education. It is expected that the second half of the New Middle Age's life will be much happier, if not taking the treatment-oriented approach of hearing loss only but strengthening the education needed for the maintenance and the management of healthy hearing at their work place, where 50 and 60 generations' workforce has been increased.

• 생명과학회지
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• 제5권3호
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• pp.126-136
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• 1995

The studies had been conducted to evaluate the grain processing effects for ruminants on starch digestion, body weight gain and feed efficiency since 1970. This research deals with experimental results on chemical structure, gelatinization, microbial starch digestion in rumen, intestinal starch digestion in rumen, roles of protozoa, intestinal starch digestion of bypass starch, limits to starch digestion in small intestine. The grain processing has different effects on digestion, weight gain and feed efficiency when different grain sources and contents is used, and the quality and quantity of roughage is different. The economical and efficient method of grain processing should be selected considering weight gain and feed efficiency enhancement than digestibility.

• 한국융합학회논문지
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• 제12권9호
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• pp.251-259
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• 2021

본 연구는 임상실습을 경험한 간호대학생의 공감피로, 공감만족, 영성과 삶의 질의 관계를 파악하기 위한 서술적 조사연구이다. 연구 대상은 C도에 소재한 3개 대학에서 임상실습을 수행한 4학년 간호대학생 172명이며, 자료는 2020년 11월 7일에서 12월 11일까지 구조화된 설문지를 이용하여 수집되었다. 연구결과, 공감피로의 하위요인 중 소진은 삶의 질과 유의한 부적 상관관계를, 공감만족은 삶의 질과 유의한 정적 상관관계를 나타내었다. 영성은 소진과는 부적 상관관계를, 공감만족과는 정적 상관관계를 나타내었다. 따라서 간호대학생의 공감피로와 공감만족을 조절하여 삶의 질을 향상시키기 위해 영성증진전략의 개발과 적용을 제언한다.

• The Journal of Korean Physical Therapy
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• 제26권4호
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• pp.262-268
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• 2014

Purpose: This study was conducted in order to measure fatigue as an objective index, depression and health-related quality of life of patients with COPD in daily life, to understand the correlation between them, and to present reasons for using the results clinically. Methods: This study is intended to evaluate and compare depression, the health-related quality of life of each group after measuring lactic acid levels of 39 male patients with COPD, and dividing those with measurement values than the normal value into the experimental group, and those with normal values into the control group. Results: When comparing depression between the experimental group and the control group, it was measured at 10.38 in the experimental group, and at 7.00 in the control group (p<0.05). Health-related quality of life between the experimental group and the control group was measured at 51.8 in the experimental group, and at 48.67 in the control group (p>0.05). Conclusion: According to the results described above, it appears that patients with COPD have adapted to their disease in some degree for a long period of time, and they are physically and psychologically adjusting to the fatigue they experience, in their own ways of adapting. These results imply that improving physical activity is associated with relief of fatigue and improvement of the quality of life. Thus, there is a need for developing and researching an exercise program and a physical therapy intervention for enhancement of physical activity.