• 품질경영학회지
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• 제23권3호
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• pp.93-101
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• 1995

We present a brief survey concerning the relations between mean residual life and failure rate. Change points of mean residual life and failure rate are known to be different in general and we explore such situations in this paper. A few parametric models which show bathtub-shaped failure rate are examined in details, including the shape of its corresponding mean residual life function. We give some graphical comparisons of trend changes of mean residual life and failure rate for various choices of parameters for each parametric model.

• 대한간호학회지
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• 제31권2호
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• pp.194-205
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• 2001

The purpose of the study was to identify the effect of structured patients education had on prevention of osteoporosis, with fracture and the resulting of life style changes in patients. In this study, a non equivalent control group pre and a post test design was employed. Data were collected through an interview process using questionnaires from April to December of 1999. The subjects, consisting of 59 patients with fractures and over 40 years of age, were diagnosed in K University Hospital. This study tested the patients knowledge at three times. The times were before the program 2 weeks into the program, and 6 months after education program. Life style change related to prevention of osteoporosis was shown twice (before and 6 months after the education program) in the experimental group, and control group went without it. The instruments used for this study were developed by literature review according to a reliability test. Data was analyzed using X2 test and t test to determine similarities between the experimental and control groups. The hypothesis was tested using repeated measures of ANOVA, t-test and Pearson correlation coefficients. The results of the study were summarized as follows: 1. The first hypothesis was accepted: a higher level of knowledge about osteoporosis was found in experimental groups who received education than to the control group during the period (F=19.82, p=.0001). 2. The second hypothesis was accepted: a higher level of life style changes about osteoporosis on experimental group were recorded than as compared to control group (t=3.55, p=.001). 3. The third hypothesis was accepted: the higher the knowledge about osteoporosis the higher the level of performance of life style changes about prevention of osteoporosis (r=.600, p=.0001). In conclusion, structured patient education in patient with fractures improved the level of knowledge about osteoporosis and more likely undergo of life style changes 6 months after the education program. Also reeducation would be needed 6 months after program ends. That is structured patient education in pamphlet form would be very effective in nursing intervention that may to result in life style changes. Therefore further research is needed to reinforce the education material and to generalize the education effect.

• 한국학교보건학회지
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• 제36권3호
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• pp.103-112
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• 2023

Purpose: The COVID-19 pandemic, which emerged in late 2019, had a profound impact on global public health and disrupted the daily lives of people worldwide. Particularly, university students faced a challenging situation as their university life underwent a drastic transformation due to long-term remote learning and isolation measures. This study aimed to investigate the relationship between changes in daily life during the 2020 COVID-19 pandemic and depressive symptoms among university students aged between 19 and 29 in Korea. Methods: We analyzed data from the nationally representative 2020 Community Health Survey (CHS). Among the 229,269 participants, 9,279 university students aged 19-29, either enrolled or on leave, were selected. After excluding 401 cases with missing values, the final sample comprised 8,878 individuals. Using multivariate logistic regression with a complex sample design, we explored the association between daily life changes during the COVID-19 pandemic and depressive symptoms. Results: Changes in daily life during the COVID-19 pandemic was associated with depressive symptoms in Korean university students aged 19 to 29, even after adjusting for sociodemographic characteristics, health-related factors, and COVID-19-related aspects (OR=1.28, 95% CI=1.09~1.50). Conclusion: Our study suggests that when examining the impact of COVID-19 on health issues, it is crucial to consider the changes in daily life caused by the pandemic. These findings can provide insights into the psychological well-being of university students during times of crisis.

• Journal of Microbiology and Biotechnology
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• 제32권7호
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• pp.927-937
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• 2022

To confirm the therapeutic effect of the water extract from Ecklonia cava (WEE) against PM_2.5 induced systemic health damage, we evaluated gut health with a focus on the microbiota and metabolites. Systemic damage in mice was induced through PM_2.5 exposure for 12 weeks in a whole-body chamber. After exposure for 12 weeks, body weight and food intake decreased, and WEE at 200 mg/kg body weight (mpk) alleviated these metabolic efficiency changes. In addition, PM_2.5 induced changes in the length of the colon and fecal water content. The administration of the WEE at 200 mpk oral dose effectively reduced changes in the colon caused by PM_2.5 exposure. We also attempted to confirm whether the effect of the WEE is mediated via regulation of the microbiota-gut-brain axis in mice with PM_2.5 induced systemic damage. We examined changes in the fecal microbiota and gut metabolites such as short-chain fatty acids (SCFAs) and kynurenine metabolites. In the PM_2.5 exposed group, a decrease in the abundance of Lactobacillus (Family: Lactobacillaceae) and an increase in the abundance of Alistipes (Family: Rikenellaceae) were observed, and the administration of the WEE showed a beneficial effect on the gut microbiota. In addition, the WEE effectively increased the levels of SCFAs (acetate, propionate, and butyrate). Furthermore, kynurenic acid (KYNA), which is a critical neuroprotective metabolite in the gut-brain axis, was increased by the administration of the WEE. Our findings suggest that the WEE could be used as a potential therapeutic against PM_2.5 induced health damage by regulating gut function.

• 동아시아식생활학회지
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• 제5권3호
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• pp.359-370
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• 1995

Kimchi is a traditional fermented vegetable in Korea. It has unique taste and flavor due to the variability of raw vegetable, subingredient and their ratio of combination. Fermentation method have very critical effect on these charicteristics. Overall taste of Kimchi is also influenced by texture. In this paper, the changes in texture of Kimchis were reviewed related to pectic substance, enzymatic activities and other chemical changes during the fermentation of Kimchi. Moreover, treatments to prevent softening of Kimchi texture such as preheating, CaCl$_2$ addition, their combination effect and chitosan addition were summarized from the literatures.

• 가정과삶의질연구
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• 제29권1호
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• pp.55-70
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• 2011

The purpose of the research is to critically review the major changes of marriages and families during the 20th & 21st centuries and its impact on family relations. Especially, three topics that is, changes in the meaning of marriage, changes in the gender role and sexuality, and changes in the life span were reviewed in terms of how those changes had impacts on each family members and who had been influenced most. Also, how those kinds of changes will have influences on marriage and family relations. Finally, based on the review implications and research agendas for the family scholars were added.

• 한국가정과교육학회지
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• 제29권3호
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• pp.89-104
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• 2017

본 연구는 제4차 산업혁명시대를 맞이하며 소비생활 측면에서 지능정보기술이 가져올 변화와 영향력을 살펴보고, 가정교과의 소비자교육 역할에 대해서 살펴보았다. 본 연구의 목적은 소비생활 측면에서 제4차 산업혁명에 대한 이해를 높여 주체적인 소비자로서 현명하게 미래 소비사회에 대응하기 위한 이론적 기초를 제공하고자 함이다. 먼저 제4차 산업혁명에서의 소비패러다임 변화에 대한 부분에서 생산과 소비는 초연결 플랫폼을 통해 실시간으로 공유되면서 융합되고 있다. 소비의 의미는 정신적 경험과 체험이 중요시 되고 있으며, 소유보다는 사용과 공유가 부각되고 있다. 주요 소비생활의 변화에 있어서는 더욱 편리해지는 스마트한 소비생활이 나타날 것이며, 개인별 수요에 최적화된 개인 맞춤형 소비가 가능해 질 것이다. 또한 지속가능한 환경친화적 소비가 더욱 증가할 것으로 예견되며, 급변하는 소비트렌드의 변화는 소비자중심으로 빠르게 진행될 것이다. 다음으로 제4차 산업혁명에서 예견되는 소비생활에서의 문제점에 대해 살펴보면, 지능정보기술 권력중심으로 인한 불평등적 소비가 나타날 것이며, 개인정보 데이터의 활용 및 관리 문제가 나타날 것이다. 또한 신기술 도입에 대한 윤리적 문제가 대두될 것이며, 궁극적으로 소비의 행복에 대한 문제점이 제기된다. 이러한 새로운 패러다임의 변화에 현명하게 대처하기 위해서 가정교과 소비자 영역에서는 우선적으로 가치 중심교육이 이루어질 필요가 있다. 소비의 윤리적 측면이 고려되어져야 하며, 소비생활에서 신뢰와 상호 협력이 이루어져야 한다. 아울러 창의적 융합이 가능하도록 소비자교육이 진행되어져야 한다.

• International journal of advanced smart convergence
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• 제11권4호
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• pp.216-226
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• 2022

In this study, we selected and trained 9 people in the diaphragm training group and 9 people in the power-breath training group among elderly people aged 65 or older living in the community, and investigated the effect of combined training using respiratory equipment on lung function, balance, and life satisfaction. We conducted the elderly to do combined exercises, twice a week for a total of 6 weeks, that include the breathing training by diaphragm, the breathing training using Power-breath equipment, and the training using a theraband. We evaluated the changes in the lung function, the balance, and the life satisfaction before and after the intervention for our study subjects.As a result of our measurement, lung function, balance, and life satisfaction showed significant changes in the experimental group that performed the combined training using Power-breath equipment. As a result of the study, we confirmed that the elderly in the community had a positive effect on the life satisfaction by improving lung function and balance ability after conducting a combined training using respiratory equipment.

• 생약학회지
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• 제38권2호통권149호
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• pp.133-138
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• 2007

Regarding chemical changes in oriental drugs after food processing such as roasting, fermentation, and extrusion, fifty commonly-used medicinal plants were investigated. As a result, Aurantii nobilis Pericarpium (a tangerine peel from Citrus unshu Markovich) showed remarkably different HPLC profiles after being roasted. An increased peak was isolated by repeated chromatography and identified as 5-hydroxymethyl furfral (5-HMF) by means of instrumental analyses. The 5-HMF content of Aurantii nobilis Pericarpoum reached its maximum level after being roasted for 30 min at 225$^{\circ}C$ (49.2 mg/g extract, ca 42 times of increase over untreated control). Although there were no significant changes in in vitro biological activity such as antioxidative, anti-dementia, anti-hypertension, anti-coagulation, or cytotoxicity, before and after roasting process, our results suggested that simple heat treatment might improve the value of the above oriental drug since 5-HMF has been known to possess inhibitory activities toward nitric oxide formation, tyrosinase, and sickling of red blood cells.

• 한국산학기술학회논문지
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• 제20권2호
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• pp.95-106
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• 2019

본 연구에서는 긍정심리학 기반 정신건강증진 프로그램이 즐거운 삶, 몰입하는 적극적인 삶, 의미있는 삶의 경험에 어떠한 변화를 일으키는지 살펴보고자 하였다. 이를 위해 178명의 대학생에게 한 학기동안 15회에 걸쳐 프로그램을 실시하며 사전 사후 심리적 안녕감, 우울, 낙관성 검사를 통해 그 변화를 살펴보았다. 또한 이 세 가지 검사결과 에서 긍정적 변화를 모두 보인 56명(32%)의 학생들 가운데 15명의 학생들을 대상으로 질적사례연구를 위한 심층인터뷰를 실시하였다. 연구의 주요결과는 다음과 같다. 양적연구결과 긍정심리학 기반 정신건강증진 프로그램은 대학생의 심리적 안녕감, 우울, 낙관성 사전 사후검사에서 통계적으로 유의한 차이가 검증되었으며 긍정적 효과를 보였다. 질적연구결과 긍정심리학 기반 정신건강증진 프로그램은 대학생의 즐거운 삶, 몰입하는 적극적인 삶, 의미있는 삶이라는 세 가지 구성요소별로 각각 정서, 인지, 행동차원에서의 긍정적 변화를 보였다. 세부적으로는 첫째, 긍정적 정서와 생각을 유도한 프로그램은 같은 일상생활 속에서 좀 더 적극적으로 즐겁게 생활하는 행동의 '변화'를 보였다. 둘째, '몰입하는 적극적인 삶'으로서의 긍정심리 개입을 통해 높은 '자기수용'을 인식하는 '변화'도 경험하였다. 셋째, '의미있는 삶'을 만들어가기 위해 자신이 가치 있다고 생각하는 일에 시간과 노력을 투자하여 만족감과 성취감을 경험하였다. 마지막으로 프로그램 수행이후 이들은 낙관성을 더 높게 인식하는 것이 발견되었다. 또한 감사함을 찾는 프로그램 활동을 통해 자기중심적 관찰에서 주변사람들과의 관계적 관찰에서 감사함을 찾는 관점으로 확대됨을 경험하였다.