• Safety and Health at Work
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• 제12권3호
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• pp.311-316
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• 2021

Background: The present study investigated the association between two domains of physical activity (occupational physical activity [OPA] and leisure-time physical activity [LTPA]) and sleep duration. Methods: We investigated 3,421 paid workers from the Korea National Health and Nutrition Examination Survey, 2014-2015. Sleep duration was categorized into three categories (short for less than 5 h, optimal for 5-9 h, and long for more than 9 h). OPA and LTPA were defined in terms of answers to relevant questions. Odds ratios were calculated for sleep duration according to each physical activity domain using multinomial logistic regression models. Results: There were 464 subjects (13.6%) who showed short sleep duration, and 169 subjects (4.9%) who showed long sleep duration. Prevalence of OPA and LTPA was higher in male workers than in female workers (for OPA: 3.67% and 1.76%, respectively, p = 0.0108; for LTPA: 16.14% and 6.07%, respectively, p < 0.0001). The odds ratio of OPA for long sleep duration in female workers was 3.35 (95% confidence interval, 1.37-8.21). Otherwise, LTPA was not associated with sleep duration in female paid workers, nor both physical activity domains in male paid workers. Conclusion: Female paid workers with work-related physical activity were at risk of oversleeping. These findings also suggested that physical activity has distinct associations with sleep duration according to the physical activity domains and sex.

• 성인간호학회지
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• 제24권2호
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• pp.99-108
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• 2012

Purpose: The study was done to identify factors influencing the quality of life of elderly in non-paid or paid assisted living facilities. Methods: Data were collected by questionnaires from 634 elderly in Seoul and Gyeonggi province. Measures were self-esteem, activities of daily living, depression, family support, health status, facility adaptation, care facility's quality, and quality of life. Data were analyzed using $x^2$-test, independent t-test, ANCOVA, Pearson correlation coefficients, and stepwise multiple regression with SPSS/WIN 15.0 version. Results: The significant factors influencing quality of life of elderly in non-paid assisted living facilities were care facility's quality, depression, self-esteem, family support, education, and activity of daily living, which explained about 40.4% of the variance. The significant factors influencing quality of life of elderly in paid assisted living facilities were activity of daily living, depression, family support, education, care facility's quality, and facility adaptation, which explained about 83.9% of the variance. Conclusion: The results suggest that type of assisted living facilities in developing nursing interventions to improve quality of life of elderly should be considered.

• 가정과삶의질연구
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• 제25권5호
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• pp.127-141
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• 2007

This study examined the differences of elderly workers' psychological well-being according to gender and explored the variables which account for their psychological well-being. Paid laborers aged 60 or older(eight-five men and nine-eight females) were interviewed. The psychological well-being of male workers was higher than that of the female workers. The control level of activity and family support were the variables that explained the psychological well-being of male paid workers. The higher the control level of activity was, and the more support given from family, the higher the psychological well-being scores they showed. Educational level, demand level of activity, and material reward determined the psychological well-being of female workers. The higher their educational level was, the lower the demand level of activity was, and the fewer rewards they received from paid work, the higher their psychological well-being was.

• 가족자원경영과 정책
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• 제18권2호
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• pp.75-102
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• 2014

This study classified the current work-life balance of full-time female paid workers and tested the typology by using the 2009 Korean Time Survey. The categorization demographic and psychological characteristics of women belonging to each type were comparatively analyzed. It was found that full-time female paid workers used an average of 435.7 minutes for work, 146.4 minutes for family, 104.5 minutes for leisure, and 17.7 minutes for growth. On the basis of times used in each area of work and life, individuals were classified into family-oriented type, work-leisure parallel type, work-oriented type, work-growth parallel type, and work-family parallel type. Psychological characteristics were examined by type. The work-oriented type women experienced feelings of lack of time and fatigue the most compared with women of other types. From examining the influence that the amount of time used in each area of work and life had on psychological characteristics, it was shown that the activity time relevant to leisure influenced psychological characteristics the most. Lastly, based on the limitations of this study, future assignments are discussed.

• 미생물과산업
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• 제20권3호
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• pp.14-21
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• 1994

Low molecular weight molecules and high molecular weight substances were found to have anti-tumor and immuno-modulating activity. Previously polysaccharides have been received much attention because of adhesives, food additives or animal foods (Whistler et al., 1976). In effort of developing new anti-tumor substances with low toxicity, numerous polysaccharides from yeast, algae, bacteria, higher plants and especially fungi have been investigated for anti-tumor and immuno-modulating activities. Thus the high molecular weight molecule was reported to have anti-tumor activity through host mediated immunity. In this brief article, attention will be paid to polysaccharides which is especially fungal origin.

• 한국인구학
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• 제30권3호
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• pp.57-81
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• 2007

현재 각 사회에서 진행되는 생산적 노년 논의가 사회적 생산성을 유지하고 사회적 부담을 해결하려는 방향으로 진행되고 있으며 이것은 노인의 활동성과 독립성에의 강한 가치부여로 나타난다. 본 연구는 <2004년도 전국노인생활실태 및 복지욕구조사> 자료 분석을 통해서 노인집단 내부에 나타나는 생산적 활동의 복합적인 양상을 조명한다. 노인의 생산적 활동 중 유급노동활동과 사회지원활동 두 영역에서 활동에 참여하는 노인의 경제적 기반과 자발성, 가족과의 관계에 따라 복합적 경향을 엿볼 수 있다. 이러한 점은 노인의 생활만족도 분석에서 더욱 두드러진다. 연구 결과, 대표적 생산적 활동인 유급노동의 경우 경제적 기반이 양호한 상태이고 참여 동기가 노인의 자율적 선택에 의한 자발적인 활동인 경우에는 생계유지를 위해 불가피하게 활동에 참여하는 노인과 비교하여 생활만족도에서 큰 차이를 보였다. 또 다른 생산적 활동 영역인 사회지원활동 중 가정일 및 돌봄 활동의 경우, 참여노인의 경제적 상황과 지원대상인 가족과의 관계에 따라 나누어 생활만족도를 비교했을 때 가족관계에 불만족하는 경우에 생활만족도가 눈에 띄게 떨어진다.

• 한국생활과학회지
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• 제15권3호
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• pp.373-384
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• 2006

This study analysed the effect of mothers' work status on time use in child care and use of market child care services. There were two major questions: Do self-employed (and family worker without being paid) mothers have a flexible work schedule and so can they care her child(ren) well? If it is true, is the work status as self-employee related to non-market child care services? To answer these questions, 1,196 samples were selected from the Time Use Data of 1999, which had been administered by Korea National Statistical Office. Major results were as follows: First, a mother who is family workers without being paid made time to care children frequently more than wage earners. Second, according to regression analysis, mothers' work status was one of the important variables to explain child care activity frequency. Third, among categories of child caring ('physical caring', 'non-physical caring', and 'caring of the others'), mothers spent more frequently in 'caring of the others', and had higher probability to use market child care services. But the more frequently a mother made time in 'non-physical caring' for her child, the lower probability to choose market child care services. In conclusion, it was certain that self-employed mothers benefit from a flexible time schedule at work places. But the relationship of child care activity frequency with use of market child care services was inconsistent.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제23권6호
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• pp.567-576
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• 2020

Purpose: Not enough attention has been paid to defecation habits in Japan. This study aimed to emphasize the importance of defecation habits on health and function in Japanese pupils. Methods: Using multiple regression analysis, 2,722 questionnaires obtained from pupils in grades 5 to 12 were analyzed to determine lifestyle habits associated with defecation frequency. Results: Significant regression formulae for defecation scores were obtained for all school types: elementary school (ES) (adjusted R²=0.08, p<0.001), junior high school (JHS) (0.09, p<0.001), and senior high school (SHS) (0.15, p<0.001). The following factors were associated with poorer defecation scores, according to school type: female gender (all 3 school types), breakfast skipping (elementary and JHSs), lower physical activity (JHSs and SHSs), and longer school-day screen time (elementary and SHSs). In addition, poorer self-reported academic performance scores in ES, less standardized body mass index (BMI) in JHS, and shorter non-school- day screen time scores in SHS, were associated with poorer defecation scores. Conclusion: Poor defecation frequency showed significant associations with various lifestyle habits, such as breakfast skipping, physical activity, and screen time, among pupils. Academic performance and standardized BMI were also associated with defecation frequency. More attention should be paid to defecation frequency to sustain health and function in pupils.

• 한국인구학
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• 제30권2호
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• pp.23-44
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• 2007

본 연구는 유임금 노동, 자원봉사, 손자녀 양육과 같은 대표적인 생산적 활동에 참여하는 여성 노인을 대상으로 생산적 활동과 이에 대한 가족의 지지가 심리적 안녕감에 미치는 영향을 파악하고자 실시되었다. 상기한 활동별로 각 100명씩 총 300명을 면접 조사하였는데, 이 중 자원봉사자의 심리적 안녕감이 가장 높았으며, 활동시 가족으로부터 받는 지지는 손자녀를 돌보는 노인이 가장 많았다. 또한 이들의 안녕감을 설명하는 변인을 유형별로 살펴보면 유임금 노동을 하는 여성 노인의 경우 교육 수준이 높을수록, 활동에 대한 금전적인 보상이 적을수록, 심리적 안녕감이 높았다. 자원봉사를 하는 여성 노인은 활동에 대한 만족도가 높을수록, 활동에 대해 가족으로부터 도구적 지지를 많이 받을수록, 안녕감이 높은 것으로 나타났다. 그리고 손자녀를 양육하는 여성 노인은 배우자가 있는 경우, 총가계소득이 높을수록, 활동에 대한 금전적인 보상이 많을수록, 가족으로부터 활동에 대한 정서적 도구적 지지를 많이 받을수록, 심리적 안념감이 높았다. 본 연구는 여성 노인을 생산적 활동의 주체로서 조명한다. 그리고 이들이 행하는 생산적 활동들을 종합, 비교하여 살펴보았으며, 이를 통해 여성 노인의 심리적 안녕감을 고양할 수 있는 토대를 마련하였다는 점에서 연구의 의의가 있다.

• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2007년도 추계학술대회
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• pp.439-443
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• 2007

Nowadays, activity recognition becomes a hot topic in context-aware computing. In activity recognition, machine learning techniques have been widely applied to learn the activity models from labeled activity samples. Most of the existing work uses only one learning method for activity learning and is focused on how to effectively utilize the labeled samples by refining the learning method. However, not much attention has been paid to the use of multiple classifiers for boosting the learning performance. In this paper, we use two methods to generate multiple classifiers. In the first method, the basic learning algorithms for each classifier are the same, while the training data is different (ASTD). In the second method, the basic learning algorithms for each classifier are different, while the training data is the same (ADTS). Experimental results indicate that ADTS can effectively improve activity recognition performance, while ASTD cannot achieve any improvement of the performance. We believe that the classifiers in ADTS are more diverse than those in ASTD.