• 대한소아치과학회지
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• 제24권1호
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• pp.247-264
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• 1997

501 preschool children from 4 to 6 years were examined for their salivary reductase activity and caries experience by Resazurin Disc Test and dental examination respectively. We asked the parents about their children's oral hygiene habits, between-meal eating habits, and physical exercise habits by the questionnaire. Toothbrushing frequency had negative relation to salivary reductase activity and caries experience. Caries experience was low when parents did toothbrushing for children, when teeth were brushed at bedtime, and when fluoride toothpastes were used. Salivary reductase activity and caries experience were high in bread & cookies group, chocolates & candies group, milk & soft drink group, and fruits & vegetables group in order. Caries experience was high in case of irregular between-meal eating. Sweet food eating frequency had positive relation to caries experience. Caries activity was low in case of eating homemade non-sweet between-meals. Salivary reductase activity and caries experience were low when gum-chewing frequency was high. Salivary reductase activity and caries experience were high when the amount of physical exercise was low.

• 디지털콘텐츠학회 논문지
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• 제11권4호
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• pp.571-578
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• 2010

최근 모바일 기기를 기반으로 수많은 소셜 네트워크 서비스가 확산되고 보급되는 가운데, 위치와 시간을 기반으로 하는 연구들이 증가하고 있다. 그러나 기존 연구들에서는 장소와 시간, 이벤트에 대한 조합적인 질의를 해결하는 것이 주요한 문제가 되었다. 본 연구에서는 소셜 서비스를 위한 시공간 모델링 방안으로 장소와 시간, 이벤트, 사용자의 소셜 액티비티를 통해 Human Activity Graph 모델링 방안과 Quad Relation Factors를 제안하고, 이를 위한 데이터 수집과 분석을 위한 하부 구조를 설계하였다.

• 한국어병학회지
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• 제15권2호
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• pp.77-82
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• 2002

Effects of stress-induced suppression of humoral immunity on scuticociliate killing activity of olive flounder plasma were investigated. Changes in glucose level. alternative complement activity and Iysozyme activity of plasma by handling stress were analysed in relation to in vitri parasiticidal activity of plasma. The plasma glucose level was about two times higher in fish after a handling stress than in control fish. Plasma lysozyme activity and natural haemolytic activity were decreased in suessed fish.The scuticociliate killing activity of plasma was significantly lower in stressed fish than in non-stressed control fish. The present results indicated that stress-induced immunodepression could be a cause of scuticociliatosis occurrence in olive flounder.

• 건축역사연구
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• 제8권2호
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• pp.59-72
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• 1999

The purpose of this study is to find the spatial factors, strucure of living and activity in traditional Korean house through the Phiysiological view, Spatial factors of the house are concerned to the interior environment and sanitary condition, The elements of respiratory, nerve, temperature sence. vision, hearing, smelling have good condition and touch, pressure sence, pain, metabolism are poor in the house, Ventilation, Lighting, pleasant condition of interior environment are concerned to the elements that mentioned above and have most important meaning in the relation rate of space as 1st factor. And 2nd factor is for metabolism, housework and rest, 3rd factor ie for temperature sence, privacy and reproduction. The relation rate of factors concering interior environment are high in the upper class house. Anbang has important meaning in the relation of living structure and relation sequence of space is anbang, Konnonbang, kitchen, toilet, water place, auxiliary buildings. The relation rate of activity is high in interior space in winter and exterior space in summer.

• 한국HCI학회:학술대회논문집
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• 한국HCI학회 2009년도 학술대회
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• pp.944-948
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• 2009

휴대전화는 현재 가장 사적인 이동통신 수단으로 범용인증가입모듈의 보급과 함께 그 개인화 특성이 극대화 되고 있다. 본 연구에서는 휴대전화의 기능 모형을 도출하고 이를 기능 관계 모델을 사용하여 휴대전화의 개인화 기능 관계 모델을 제시하고, 그 작업을 분석한다. 제품의 기능 사이의 관계를 보여줄 수 있는 기능 관계 모델을 도출하기 위해 기능, 작업, 작업의 흐름, 작업의 목적, 기능범주, 기능범주와 기능 간의 영향 등을 사용하였으며, 이를 사용하여 최신 휴대전화의 기능 관계 모델을 작성하였다. 최근 휴대전화 3 개 모델로 만든 기능 관계 모델은 320 여개의 기능과 21 개의 기능 범주가 도출된 기능 모형을 기반으로 만들어졌다. 이를 개인화 기능을 중심으로 기능 관계를 모델링하게 되면 개인화 기능을 위한 정보가 저장되고 사용되는 내/외장 메모리가 모델의 중심에 놓이게 되는 기능 관계 모델이 도출되고, 저장과 조회, 연동 및 검색 등이 주요 작업이 된다, 휴대전화에서 개인화 기능 강화를 위해서는 각 기능간의 관계에 해당하는 작업을 강화하는 것이 주요하다.

• 가정과삶의질연구
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• 제7권2호
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• pp.15-30
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• 1989

This study deals with the following problems about leisure activity of young people and leisure guidance of mothers, (1) Leisure activity of children by the independent variables, (2) Leisure guidance of mothers by the independent variables. (3) The relation between leisure guidance of mothers and leisure activity of young people. This research used the questionaire survey. The subjects were 830 couples of mother and pupil (pupils of 4, 5 and t grades in six primary school in Kwang-Ju city). The statistics used for data analysis were percentage, t, F-test, X2. The results of this study are summarized as follows; (1) Boys and girls average leisure hours: week days…2 hour, saturday…3 hours, Sunday and holiday…4.5 hours, the school vacation…6.2 hours. And leisure activity showed the significant difference in sex, age, educational level, family form (p 0.001, p 0.05, p 0.010). Generally, they had social & amusing leisure activity. And a hindrance cause of leisure activ ty is due to hard working in learning practice. (2) The necessity of leisure activity showed higher in the aged mother and high educated mother, lower in the poor family. And guidance content showed the significant difference in sex of children(p 0.001), educational level of parents(p 0.05). Actually mothers wanted intellectual leisure activity. (3) The relation between the leisure activity pattern desired by leisure activity of mothers and children pattern showed that mothers demanded the various patterns, but children wanted social & amusing leisure activities mainly. Only children's patterns agreed with mothers in the artistic, intellectual, activities on Saturday and during the vacation. And the relation between mothers satisfaction degree in the leisure activity of children and children's satisfaction degree showed the significant difference (p 0.05). Children's satisfaction degree is high, irrespective of mothers satisfaction degree.

• 한국환경보건학회지
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• 제27권4호
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• pp.1-8
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• 2001

From August 2000 to August 2001, 9 variables of physicochemical factors and phytase activity were investigated at 4 sites in the River Yungpyung and the influences of Physicochemical factors to Phytase activity were analyzed. Phytase activities of Site 1, Site 2, Site 3, and Site 4 varied between N.D ∼566 nmol/ ι /hr, N.D \" 434 nmol/ ι /hr, N.D ∼557 nmol/ ι /hr, and N.D ∼723 nmol/ ι /hr, respectively. The activities of summer season were higher than those of other season. But the activities were not detected on the winter season. The phytase activity and temperature showed high correlation. The correlation coefficients of Site 1, Site 2, Site 3, and Site 4 were 0.82(p<0.01).0.92(p<0.01),0.87(p<0.01), and 0.88(p<0.01), respectively. The phytase activity and NOI₃/sup -/ ion showed negative relation(r=-0.59, p<0.05) at Site 1. And the phytase activity had relation with Zn/sup 2+/at Site 2(r=().57, p<0.05) and Site 3(r=0.7E, p<7.07).

• PNF and Movement
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• 제10권3호
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• pp.25-31
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• 2012

Purpose : This study was intended to compare muscle activity in relation to knee joint angles on closed kinetic chain. Methods : A total of 13 subjects consisting of 5 adult males and 8 adult females were made to make movements maintaining knee joint angles at $30^{\circ}$, $45^{\circ}$ and $90^{\circ}$ on closed kinetic chain and the muscle activity occurring in their vastus medialis, rectus femoris and vastus lateralis was measured. Statistical data were analyzed using oneway ANOVA. Results : On closed kinetic chain, the muscle activity of the vastus medialis, rectus femoris and vastus lateralis increased the most at $90^{\circ}$ among the knee joint angles with statistically significant differences(p<0.05). Conclusion : On closed kinetic chain, it could be seen that as the angle of the knee joint increased, the muscle activity increased.

• 한국수학사학회지
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• 제22권3호
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• pp.171-186
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• 2009

수학 분야에서 수학적 발명이 어떻게 일어나는가에 관심을 갖는 연구가에게 푸앵카레의 자서전적 일화와 그의 저서들은 많은 시사점을 준다. 수학 분야에서 능통한 학자였던 푸앵카레는 그의 수학을 연구하는 과정에 대한 자서전적 글에서 수학 분야에서 발명의 과정에 대한 상세한 설명을 제시하고 있다. 푸앵카레는 의식적 활동 뒤에 일어나는 무의식적 활동의 가치를 논의하고, 수학적 발명의 과정에서 의식적 활동과 무의식적 활동의 상보적 관계를 제시하고 있다. 또한, 수학적 발견의 과정에서 직관과 논리의 상보적 관계를 중시하고 있다. 이것은 유클리드 원론을 바탕으로 논리적 사고를 우선적으로 강조해 온 종전의 수학교육과 학생들의 창의적인 수학 능력을 기르는 교육에 시사하는 바가 크다. 특히 최근의 학습 원리로 직관적 원리를 제시하는 것도 논리와 더불어 직관을 강조해야 한다는 푸앵카레의 견해가 교육 현장에 뿌리내리는 과정이라고 볼 수 있다.

• 품질경영학회지
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• 제46권3호
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• pp.551-568
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• 2018

Purpose: This study addressed the relationship between technological innovation activity and management efficiency of Korean automobile firms. We tested the hypothesis of non-liner relationship of innovation activity in relation to management efficiency. Methods: We discussed prior literature in the firm innovation strategy and management efficiency studies to provide better understanding of relationships between technological innovation activity and management efficiency. As a result, we developed develop and tested a model (Inverted-U shaped) capturing the non-linear impact of technological innovation activity. While we used R&D expenditure and patent registration data for measuring firms' innovation activity, management efficiency was evaluated by using DEA(Data Envelopment Analysis). Results: Main findings of our empirical analysis indicated that the relationships between technological innovation activity and management efficiency was inverted U shaped. This implied that the relationship between technological innovation and management efficiency is inverted U-shaped non-linear, with management efficiency increasing up to a point, beyond which higher levels of R&D and patent registration activities led to a decrease in management efficiency. Conclusion: This study empirically assessed the inconclusive findings of previous research in the area of effects of innovation activities in relation to firm performance. The paper also provided theoretical and practical implications for firms who explore efficient strategy to promote the management performance through technological innovation activities. Future research directions with the limitation of the study was discussed.