• 한국식품저장유통학회지
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• 제22권2호
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• pp.241-250
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• 2015

본 연구는 온주 감귤의 품질 등급 설정을 위한 기초 자료 제공을 위하여 제주 감귤의 묘사적 관능 특성 개발과 재배 방법별 품질 지표간의 상관성을 조사하였다. 제주산 온주 감귤의 훈련된 패널요원에 의해 묘사분석을 한 결과 5개의 외관 특성(광택 강도, 색 강도, 껍질 두께, 손상 정도, 껍질의 조직감), 3종의 냄새(신내, 단내, 신선한 냄새), 6종의 맛(신맛, 단맛, 쓴맛, 신선한 맛, 싱거운 맛, 이미), 4종의 텍스쳐(경도, 알갱이의 경도, 다즙성, 펄프감) 및 3종의 후미(신맛, 단맛, 쓴맛)가 선발되었다. 유기농 하우스재배 및 무농약 노지 재배 감귤과 관행재배 감귤의 품질 특성 중 고형분 함량의 경우 유기농 하우스 감귤의 고형분 함량이 가장 낮았고, 큰 감귤이 작은 감귤보다 고형분 함량이 적었다. 유기농 하우스 재배 귤이 다른 시료에 비해 낮은 pH와 약간 높은 산 함량을 가지고 있었다. 감귤의 품질 특성간의 상관 분석결과 감귤 껍질와 과육을 씹은 후 남는 펄프 함량과 음의 상관관계를 보였다. 고형분 함량은 당산비, 감귤 과피의 색 강도, 단맛, 신선한 감귤맛, 과육 알갱이의 강도, 단 후미와 1% 유의 수준에서 양의 상관관계가 있는 반면 쓴맛, 싱거운 맛, 이미와는 음의 상관관계를 나타냈다. 감귤의 이화학적 및 관능적 품질 특성의 주성분 분석 결과 첫 번째 주성분(F1)과 두 번째 주성분(F2)는 전체 데이터의 48.39%와 26.77%의 설명력을 보여 주었고, 총설명력은 75.16%였다. 주성분 F1은 가용성 고형분함량, 당산비, 과피의 광택 강도, 색 강도, 신향, 단향, 단맛, 쓴맛, 신선한 감귤맛, 싱거운 맛, 이미, 과육 알갱이의 강도, 후미의 단맛과 쓴맛이었고, F2는 감귤의 크기, pH, 산도, 과피의 손상도, 과피의 조직감, 신맛, 과육의 강도, 과육을 씹었을 때 남는 펄프 함량, 후미의 신맛이었다. 또 주성분 F3는 과피의 두께와 다즙성이었다. 즉 동일 지역의 동일 품종으로 재배된 유기농 하우스 재배 감귤과 관행 재배 시료와 전반적으로 이화학적 품질 특성과 관능적 특성에 차이가 있었다.

• 한국환경생태학회지
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• 제21권6호
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• pp.565-575
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• 2007

본 연구의 목적은 한국의 비오톱지도화가 자연환경보전을 위한 실제적 계획수단으로 활용될 있도록 비오톱지도화의 출발지인 독일과의 비교를 통하여 정책적 시사점을 도출하고, 한국의 전국 비오톱지도화를 위한 새로운 방향설정을 모색하는데 있다. 연구방법은 한국과 독일의 비오톱지도화 관련 문헌 및 자료를 수집하였고, 수집된 자료를 국토 및 연방정부차원, 주정부차원, 도시 및 정주지차원에서 양국의 비오톱지도화에 대한 전반적 특성 및 경향에 대해서 검토하였다. 조사 결과 첫째, 독일은 국토전역에 걸쳐 경관생태권역별로 차등 있는 자연 및 경관을 보호, 관리하기 위해서 경관생태유형도와 경관생가치등급도를 작성하였다. 한국은 생태자연도나 녹지자연도가 전국단위에서 자연환경보전을 위해 추진된 지도화로 들 수 있다. 둘째, 독일 주정부차원에서는 주로 자연지역과 그에 준하는 지역을 대상으로 비오톱지도화가 실시되었고, 각주마다 비오톱 적색리스트가 작성된 반면, 한국의 경우 이에 준하는 도차원의 비오톱지도화는 아직 이루어지지 않고 있다. 셋째, 독일의 도시 및 정주지역의 비오톱지도화는 대도시지역 뿐만 아니라 중 소도시와 농촌지역에서도 실시되었으나, 한국의 경우 대도시와 같이 도시화가 많이 진행된 지역을 중심으로 이루어지고 있다. 결론적으로 비오톱 지도화가 전국토의 균형 있는 자연환경 및 비오톱 보호 관리를 위한 수단이 되기 위해서는 도시지역뿐만 아니라 자연지역 및 반자연지역의 비오톱지도화가 활성화되어야 한다. 또한, 이를 위해서는 국토전역에 적용할 수 있는 비오톱유형목록 및 비오톱적색리스트에 대한 연구가 선행되어야 할 것이다.

• Journal of Korean Neurosurgical Society
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• 제30권6호
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• pp.688-698
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• 2001

Objectives : Parkinson's disease is a well-known neurodegenerative disease characterized by dopaminergic cell death in the substantia nigra. The reactive gliosis by activated astrocytes and microglias is no more regarded as a simple sequel of neuronal cell death. Microglial activation takes place in a stereotypic pattern with graded morphologic and functional(resting, activated and phagocytic) changes. In Parkinson's disease animal model, the degree of microglial activation along the nigro-striatal dopaminergic tract has not been studied intensively. The purpose of this study was to elucidate the characteristics of microglial reaction and to grade its degree of activation at substantia nigra and corpus striatum using 6-hydroxydopamine induced rat model of Parkinson's disease. Methods : Using Sprague-Dawley rat, parkinsonian model was made by 6-hydroxydopamine(OHDA) induced destruction of medial and lateral substantia nigra(SN). The rat was sacrificed 3-, 5-, 7-, 14- and 21-day-after operation. For control group, we injected saline with same manner and sacrificed 3-day after operation. With immunohistochemistry, we examined dopaminergic neuronal cells and microglial expression using tyrosine hydroxylase (TH) and OX-42 antibodies, respectively. Also we performed in situ hybridization for osteopontin, a possible marker of subset in activated microglia. Results : 1) In lesioned side of substantia nigra and corpus striatum, the TH immunoreactivity was markedly decreased in whole experimental groups. 2) Using optical densitometry, microglia induced immunoreactivity of OX-42 was counted at SN and corpus striatum. At SN, it was increased significantly on the lesioned side in control and all time-dependent experimental groups. At striatum, it was increased significantly in post lesion 3-day group only(p <0.05). Compared to control group, immunoreactivity of OX-42 on lesioned side was increased in groups, except post lesion 21-day group, at SN. Only post lesion 3-day group showed significance at striatum(p <0.05). Compared to SN region, immunoreactivity of OX-42 was much weaker in striatum. 3) Microscopically, the microglias showed typically different activation pattern. At SN, numerous phagocytic microglias were found at pars compacta and reticularis of lesion side. At striatum, no phagocytic form was found and the intensity of staining was much weaker. 4) At SN, the immunoreactivity of osteopontin showed definite laterality and it was markedly increased at pars compacta of lesion side with relatively short duration time. At striatum, however, it was not detected by in situ hybridization technique. Conclusion : The nigral 6-OHDA induced rat model of Parkinson's disease revealed several characteristic patterns of microglial reaction. At SN, microglias was activated shortly after direct neuronal damage and maintained for about three weeks. In contrast, despite of sufficient dopaminergic insufficiency at striatum, activation of microglias was trivial, and distinguished 3 day later. Antegrade slow neuronal degeneration is major pathophysiology in striatal dopaminergic deficiency. So, the acuteness of neuronal damage and consequential degree of neuronal degeneration may be important factor for microglial activation in neurodegenerative diseases such as Parkinson's disease. Additionally, osteopontin may be a possible marker for several subsets of activated microglia, possibly the phagocytic form.

• 한국학교ㆍ지역보건교육학회지
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• 제13권3호
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• pp.57-71
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• 2012

Objectives: This study examines the situation regarding smoking among high school students in Seoul Province and identifies smoking-related factors. Methods: The study sample consisted of 1,000 high school second-grade students from 6 high schools in Seoul. The PRECEDE model was used to assess the students' needs. We carried out an educational diagnosis on attitudes, outcome expectations and social norms. Date were collected from June. 7 to 21, 2011, and were analyzed using SPSS-15.0 according to the study objectives. Results: Of 906 respondents, 9.4% had experiences to smoking: 12.7% were male and 5.7% were female. Smoking-related factors from among general characteristics were statistically significant depending on the degree of gender($x^2$=14.515, p=.001), school performance($x^2$=40.289, p=.001) and friends 'smoking status($x^2$=88.615, p=.001). Factors concerning attitudes toward smoking were statistically significant depending on the students' perceptions as follows: 'Smoking is fun(t=-14.801, p=.000)', 'Smoking looks cool(t=-10.349, p=.000)', 'People who smoke have more friends(t=-11.295, p=.000)', 'Smoking helps me manage stress(t=-15.059, p=.000)' and 'Smoking is not harmful to the body if you exercise(t=-6.388, p=.000)'. Factors concerning outcome expectations were statistically significant depending on their perceptions as follows: 'Tobacco smells good(t=-8.939, p=.000)' and 'Smoking helps in weight management (t=-7.304, p=.000)'. Factors concerning social norms were statistically significant depending on the following perception: 'My friends will not like it if I smoke(t=4.605, p=.000)'. The following influence high school students attitudes toward smoking: School performance (OR=11.66, 95%CI=1.67~81.37; OR=18.27, 95%CI=2.58~129.24; OR=26.74, 95%CI=3.06~233.79), Friends smoking status(OR=80.05, 95%CI=6.94~922.77), 'Smoking is fun(OR=12.90, 95%CI=3.87~43.04; OR=63.41, 95%CI=10.66~377.09)', 'Smoking looks cool(OR=0.15, 95%CI=0.03~0.64)', 'Smoking is not harmful to the body if you exercise(OR=1.44, 95%CI=0.03~0.62)', 'When there is no work to do, smoking is a good way to pass the time(OR=21.68, 95%CI=4.27~109.90)', 'When you are angry, smoking calms you down.(OR=13.39, 95%CI=3.92~45.65; OR=8.69, 95%CI=1.67~45.13)' and 'My parents consider it important that I do not smoke(OR=10.05, 95%CI=1.00~100.43)'. Conclusions: The study suggests that effective ways to discourage of high school students from smoking are changing their attitudes toward smoking, reducing the motivation to smoke, and controlling the number of cigarettes. Therefore, aiming at preventive education. Schools must provide accurate information about the effects of smoking. Thus, health education should actively involve preventive education not only in schools but also at home, the societal and national levels. Cooperation between various sectors of society is required for this.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제22권3호
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• pp.182-191
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• 2011

Objectives: The aim of this study was to investigate the sleep patterns of South Korean elementary school children and whether the differences in sleep patterns were related to behavior, emotional problems, attention and academic performance. Method: This study included a community sample of 268 boys and girls from fourth-, fifth- and sixth-grade classes in a South Korean metropolitan city from November to December 2010. The primary caregivers completed a questionnaire that included information on demographic characteristics, as well as the Child's Sleep Habit Questionnaire (CSHQ), the Korean version of Child Behavior Checklist (K-CBCL), the Korean version of the Learning Disability Evaluation Scale (K-LDES), the Korean version of ADHD Rating Scale (K-ARS) and the Disruptive Behavior Disorder Scale (DBDS). We conducted analyses on the CSHQ individual items, between the subscales, on the total scores and on the K-CBCL, the K-LEDS, the K-ARS and the DBDS. Results: Based on the findings from the CHSQ, the subjects had significantly higher scores for bedtime resistance ($9.18{\pm}2.17$), delayed sleep onset ($1.32{\pm}0.62$), the sleep duration ($4.19{\pm}1.52$) and daytime sleepiness ($14.10{\pm}3.55$) than the scores from the previous reports on children from western countries. The total CHSQ score showed positive correlations to all subscales of the K-CBCL : withdrawn (r=0.24, p<.005), somatic complaint (r=0.24, p<.005) and anxious/depressive (r=0.38, p<.005). Bedtime resistance was associated with oppositional defiant disorder (r=0.15, p<.05) and a positive correlation was demonstrated between sleep anxiety and the oppositional defiant disorder score (r=0.13, p<.05), night waking and the conduct disorder score (r=0.16, p<.05). Delayed sleep onset was related with low performance on the K-LDES with respect to thinking (r=-0.17, p<.05) and mathematical calculation (r=-0.17, p<.05). Conclusion: The results of this study reconfirm Korean children's problematic sleep patterns. Taken together the results provide that the reduced sleep duration and disruption of sleep pattern can have a significant impact on emotion, behavior, performance of learning in children. Further studies concerning more diverse psychosocial factors affecting sleep pattern will be helpful to understanding of the sleep health in Korean children.

• 한국학교보건학회지
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• 제6권2호
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• pp.89-100
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• 1993

This study intended to examine closely the reasons which influence the health status and to health behavior of teenagers and plan the development of the school health education. The subject of this study was the boys, and girls' high school students in Chonguy city. The number of them was totally 632 and the period was from July 9 to 14, 1990. 1. The Health Status of Teenagers. I have examined closely the health status of teenagers. They answered they continued to go to school. ever though the majority of teenagers had troubles in their sleeping and felt sick As for one's health, most of teenagers were in a good condition and were sometimes worrying about their health condition. 2. The Degree of Interest and Responsibilities of Teenagers for Their Own Health. In the responsibility of teenagers for their own health the answer, 'my health depends on my taking care of it', had the highest grade, 4.67. And the answer, 'I am in a good health condition because I have taken of my health very well', had the lowest average, 4.1. In the degree of interest of teenagers for their own health, the problem of studying had the highest degree, 4.48 and the use of drugs, the smoking behavior, masturbation, the drinking behavior and the birth control were the lowest degree. 3. The Health Behavior of Teenagers. In this part, teenagers performed about 64 percent's health behavior on the point of 3.37. 4. The Comparison of the Health Behavior, the Health Responsibility and the Health Interest of the Subject According to the General Characteristics. The results were as follows: 1) There are significantly different in the health behavior according to sex (t=6.23, p<.001), smoking experience (t=5.33, p<.001), living place (t=5.09, p<.001), ranking of brothers (F=4.19, p<.01), economic situation(F=6.57, p<.001). 2) There is significantly different in the health responsibility according to sex(t=2.31, p<.05), experiencd by disease(t= 1.92, p<.05). 3) There are significantly different in the health interest according to the chronic disease experience of family (t=3.29, p<.001), smoking experience(t=2.71, p<.01). 5. The Correlation of the Health Behavior, the Health Responsibility, the Health Interest and the Health Locus of Control of the Subject. The health behavior showed the positive correlation with the health responsibility (r=.2906, p<.001), and the health responsibility showed the positive correlation with the health interest (r=.0938, p<.01). Also the health behavior showed the positive correlation with powerful others health locus of control (r=.2606, p<.001), and internal health locus of control (r=.2023, p<.001), the health responsibility showed the positive correlation with internal health locus of control (r=.4541, p<.001), and chance health locus of control(r=.1352, p<.001), and the health interest showed the positive correlation with internal health locus of ccntrol (r=.0920, p<.001), powerful others health iocus of control (r=.1907, p<.001 chance health locus of control (r=.1191, p<.01). On the basis of the above result, we can find the fact that the interest of teenagers for their own health is increasing. And so, it is necessary for the school health management to establish the new curriculum which strengthens the health education for the planning of one's desirable health management. Besides we need efforts to develop the standard scale through the analysis of all reasons which influences the tenagers' health status and health behavior.

• 한국학교보건학회지
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• 제8권2호
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• pp.233-243
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• 1995

A survey has conducted on two hundred high school students of the first and second grade by way of questionnaine in Seoul. The purpose of this study on the information from the survey is to cstimate the level of awareness and probe how they feel and what they wish on sex. X2 inspection is designed to assess general aspects of responded contents by way of percentage and examine degree of satisfaction on previously experienced sex education and demand for sex education. The result is as follows. 1. As a result of the examination of degree of awareness on sex of respondents, 62% delines sex as human relationship including moral values for harmony between men and women. 64% of the men and 70% of the women say that sex is a natural thing. It comes to the conclusion that most of the respondent sgenerally consider sex positive. On chastity, 68.5% of the respondent answer that it means physical chastity, 12.5% that chastity before marriage should be kept, and 43% that it should be kept as far as possible. Most of them pespond that it should be kept. 2. As a result of the examination on the contents of sex, they answer they know well in the order of masturbation(72%), pregnancy(76%), and sex(63%). Contraception, abortion and ejection are contents they poorly informed of. 3. As a result of the examination on experienede of sex education, 83% of men and 100% of women have experienced sex, education, but their degreeof satisfaction to it is very low. And 49% of the whole is dissatisfactory to it. There is some difference between male and female students.(p=0.000) That result translates that female studeuts are educated on sex tjhrough more systematic subjects than male ones. In addition, it turns out that teenagers get most information on sex through friends, seniors, and mass media such as videos, TV and radios. Correct and systematic sex education is need because wrong information on sex culd be taught and bring them to misbehave. 4. 87.5% of the respondents answer that sex education is necessary, so that degree of necessity for sex education, turns out to be very high. Also the main subject that should perform sex education is in the order of school(50%), Society(24.5), home(18.5%). They respond that most appropriated period for the beginning of sex education is about elementary school age(43%), and 34% believes it to be put ahcad of elementary school age. Anurse teacher accounts for 54% for the main subject that addresses sex education, to male students visit teachers are most favored for 50%. As a result of those, it could be concluded that most high school students want sex education from responsible persons who have systematic and professional knowledge on sex. 5. In order to perform proper sex education by the above results, better educational effects are obtained when characteristics and natures of teenagers are known and most wanted knowledge by them is taught in priority in times of planning sex education. Besides, the contents of sex education suitable for each school should be planned before elementary school age and sex education should be performed in accordance with students' demand. In addition, sex education should be attentively performed by home, all organizations of society as well as school. Therefore, sex education will play a great role in making teenagers reestablish their conception on sex when the traditional and moral value systems of our country and the new value systems which are being formed under the influence of the western culture are in harmony.

• 벤처창업연구
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• 제10권2호
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• pp.77-84
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• 2015

최근의 조사에 의하면 명품을 구매하는 소비자가 늘고 있다. 특히 2,30대의 젊은 소비자들은 강한 명품소유 욕구를 가지고 있어 본 연구는 20대의 소비성향에 대하여 이론적 토대를 마련하고자 하였으며, 이들 소비자를 대표하는 대학생들을 대상으로 명품에 대한 인식과 구매경험, 주로 구매하는 품목, 월 용돈수준 등을 조사하였다. 아울러 명품모방품에 대해서도 구매경험과 주 구매품목, 구매이유를 살펴봄으로써 명품 브랜드의 마케팅 전략 수립에 있어서 시사점을 제시하고자 하였다. 사회심리학적 관점에서 볼 때, 소비자들은 사회비교추구성향을 보이는데, 특히 젊은 세대는 상대적으로 통제감이나 자기효능감이 강하지 못하므로 주변의 분위기에 휩쓸린 과시소비에 쉽게 빠져들 가능성이 높아 명품에 대한 관심이 높을 수 있다. 또한 실증 조사 결과, 우리나라 대학생은 명품을 품질이 우수하거나 세계적으로 유명한 브랜드로 인식하고 있었다. 특히 남학생은 품질이 우수한 브랜드를, 여학생은 세계적으로 유명한 브랜드를 명품브랜드의 특성으로 꼽아 통계적으로 유의한 성별 차이를 보이고 있었다. 아울러 대부분의 응답자들은 명품브랜드를 구입한 경험이 있는데, 월 용돈이 많을수록 구입경험도 많았다. 응답자들이 구입한 품목은 패션용품, 의류, 시계/보석, 화장품/향수 등의 순이었고, 성별 및 용돈수준별로도 주요 구입품목이 차이를 보이고 있었다. 명품모방품의 구입경험자는 많지 않았으며, 주로 구입한 품목은 패션용품이었고 구입이유로는 가격대비 품질 및 경제적인 이유를 가장 많이 들고 있었다. 비교적 높은 용돈수준의 응답자들이 명품모방품 구입경험이 높은 점은 흥미롭다. 여학생은 남학생에 비해서 명품 및 모방품의 구매의도가 높았다. 학년별 명품 및 명품모방품의 구매의도는 모두 통계적으로 유의한 차이를 보이지 않았으나, 용돈에서는 흥미로운 점이 발견되었다. 즉, 명품의 구매의도는 용돈이 높을수록 증가하고 명품모방품의 경우는 그 반대였지만 특정 용돈수준에서는 높아서 비선형적(non-linear)인 트랜드를 보였다. 이는 명품모방품 구입경험 조사결과와도 맥락을 같이 한다. 하지만 이에 대한 정확한 해석을 위해서는 심층적인 후속 연구가 필요할 것이다. 본 연구는 명품의 마케팅전략 수립에 있어서 여러 가지 학문적, 실무적 시사점을 제공하고 있다.

• 생명과학회지
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• 제15권5호
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• pp.840-846
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• 2005

본 연구는 식품의 안전성에 대한 관심이 고조되면서 위생적인 식육생산을 위한 방법으로 전자선을 조사하여 이화학적 특성 및 지방산화에 미치는 영향을 조사하고자 실시하였다. 공시재료는 한우암소 지육중 육질등급 1+판정(근내지방도 No.7. 육색 No.4, 성숙도 No.1, 조직감 No.1)을 받은 지육($280\∼300kg$) 6두를 구매하였다. 구매한 원료지육을 1차 수도물로 고압수세하고 2차 $ 50\% $에틸알콜로 소독한 후 발골 정형하여 실험재료로 사용하였다. 모든 처리에서 가열온도가 높아갈수록 포화지방산의 함량이 높아갔다. PBS는 가열온도에 따른 지방산패에서 전자선 비조사구와 조사구 모두 가열온도가 높을수록 높은 지방산 패도를 나타내 었고(P<0.05), OBS 또한 malonsldehyde양이 증가하였다(p<0.05). 가열온도별로는 $ 60^{\circ}C $에 비하여 $ 80^{\circ}C $가 비조사구와 3, 6 kCy 조사구는 약 2배정도의 MA량이 생성되었다(p<0.05). OBS가 PBS보다 많은 양의 malonaldehyde가 생성되었으며, 전자선 조사 수준의 차이에는 수준에 따라 비조사구와 약간의 차이만 나타내었다. 전자선조사수준과 가열온도가 증가함에 따라 콜레스테롤 산화물의 발생량이 증가하였으며, 또한 가열방법 중 PBS가 OBS에 비하여 산화의 정도가 유의적으로 증가하였다(p<0.05).

• 한국과학교육학회지
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• 제34권5호
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• pp.421-436
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• 2014

이 연구의 목적은 과학 학습부진을 해소하기 위해 부진 원인에 따라 맞춤형 지도를 할 수 있는 프로그램을 개발하고, 이를 적용하여 그 효과를 확인하는 것이었다. 이를 위해 과학 학습부진의 특성 및 원인을 분석하여 중학교 1학년 과학학습 부진아 22명을 과학 탐구능력 부족형, 과학 학습동기 부족형, 과학 학습전략 부족형의 세 가지 유형으로 나누고 실험 집단과 비교 집단으로 구분하였다. 두 집단에 적용한 프로그램은 동일 단원과 주제로 구성했으며, 비교집단에는 기본 개념과 활동 중심 프로그램, 실험집단에는 원인 유형별 프로그램을 주 1회, 60분씩 15주 동안 투입하였다. 투입이 끝난 후, 적용한 프로그램에 대한 인식검사, 과학탐구능력 검사, 학습동기 및 학습전략 검사, 학업성취도 평가를 하였으며, 이들 평가 결과와 함께 학생활동지, 연구일지, 수업 전사내용, 학생 면담 등을 통해 프로그램 효과를 분석하였다. 연구 결과, 실험 집단에 투입된 맞춤형 프로그램은 세 가지 부진유형 집단별로 탐구능력, 학습동기, 학습전략이 각각 향상되어 부진원인을 해소하였고, 더불어 학업성취도도 향상되었다. 과학 학습동기 부족형과 과학 학습전략 부족형은 다른 부진 원인도 함께 향상되는 경향을 보였다. 또한 실험집단에서 과학 학습부진 유형별 맞춤형 프로그램에 대해 높은 만족도를 보였다. 이러한 연구 결과로부터 과학 학습부진 원인에 따른 맞춤형 프로그램이 과학학습 부진아들의 부진원인 해소와 학업성취도 향상에 효과적임을 알 수 있었다.