• Korean Journal of Community Nutrition
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• v.2 no.3
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• pp.281-293
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• 1997

Dietary fiber(DF) intake of teenagers was estimated and the major food sources of fiber were analyzed using three-day food records and data from 365 middle school students in urban, rural and fishing areas. Mean dwily DF intake of males was 9.2$\pm$3.9g in urban, 10.4$\pm$5.4g in rural, and 7.9$\pm$4.0g in fishing areas and the intake of female was 10.6$\pm$5.1g in urban, 10.6$\pm$5.2g in rural, and 7.7$\pm$3.3g in fishing areas. When related to energy intake, female consumed more DF(5.7$\pm$2.5g/1000㎉, 7.0$\pm$3.5g/1000㎉, 4.6$\pm$2.2g/1000㎉, in urban, and rural, fishing areas respectively) than males(4.2$\pm$1.3g/1000㎉, 4.6$\pm$1.5g/1000㎉, 4.4$\pm$2.0g/1000㎉ in urban, rural, fishing respectively). Mean crude fiber(CF) intake of males was 4.1$\pm$1.7g, 4.5$\pm$2.4g, 3.7$\pm$2.4g, and female's intake was 4.7$\pm$1.9g, 4.8$\pm$2.2g, 3.7$\pm$1.9g in urban, rural, and fishing areas respectively. The mean DF : CF ratio for the subjects was 2.2-2.6, indicating that the DF intake is 2-3 times that of CF intakes. The intakes of the two measures of fiber were highly correlated(r=0.7781) . The major food sources for DF were cereals, vegetables and fruits and the percentage contributions of the food groups to the DF intake were 27-37$\%$, 22-30$\%$, and 11.5-19.7$\%$ respectively. The present study indicates that the DF intake of teenagers is considerably lower than the recommended level and they need to consume more DF than that indicated by the present levels. The importance of nutrition education on health and dietary pattern should also be emphasized among teenagers.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.7
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• pp.564-576
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• 2020

The study aims to verify the influence of overt narcissism and covert narcissism in adolescents upon Interpersonal Relationship through self-concept clarify. Regular middle school students were surveyed over the period from November 4 to 22, 2019. A total of 470 questionnaires were used in the analysis for this study. The data were analyzed using SPSS 23.0 and AMOS 23.0 statistics suites. The study results are as follows. First, the covert and overt narcissism of adolescents had a negative impact on the self-concept clarity. Second, the self-concept clarity of adolescents had a positive impact on interpersonal relationships. Third, the covert and overt narcissism of adolescents had a negative impact on interpersonal relationships. Fourth, in the relationship between adolescent overt/ covert narcissism and interpersonal relationship, self-concept clarity all had a significant mediating effect. This research has empirically demonstrated the influence of the self-concept clarity upon interpersonal relationship in relation to the overt and covert narcissism of adolescents, so that the study findings provide a wider understanding of the adolescents who have difficulties with Interpersonal Relationships while helping enhance expertise in the counseling and education curriculum based on the characteristics of narcissists.

• Korean Journal of Cognitive Science
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• v.22 no.3
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• pp.255-270
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• 2011

The purpose of this study was to examine the effects of nonspecific and specific cue on decision making during situation awareness. Participants were 36 male college students who were randomly assigned to one of three groups: (1) nonspecific situation awareness, (2) specific situation awareness, and (3) a control group. Every participant was in the level 3-4.5 according to American National Tennis Level Program. Participants were asked to watch tennis single defence, single offence, double defence rally and when the screen stops, they were required to push the button(left, middle, or right) appropriate for the ball's direction to return as soon as possible. The experiment was designed to be analyzed for group(3)${\times}$condition(3)${\times}$area(7) using three-way ANOVA. The dependent variables were reaction time, accuracy rate, and amplitude and latency of P300. The result showed that the latency of the nonspecific situation awareness group and the specific situation awareness group was shorter and their amplitudes were higher than the control group. Fz, Cz, Pz were prominent among areas, and the single defence condition was more prominent than the single offence and the double defence condition. As a result of the study, it can be suggested that the information about situation awareness provided beforehand directly affects the brain's information processing. In addition, it shows that ERP can be a useful index for studying situation awareness.

• Journal of KIISE:Software and Applications
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• v.35 no.3
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• pp.197-206
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• 2008

In the mobile Internet environment, frequent communications between a mobile device and a content server are required for searching or downloading learning materials. In this paper, we propose an efficient prefetching technique to reduce the network cost and to improve the communication efficiency in the mobile dictionary. Our prefetching-based approach can be explained as follows. First, we propose an overall framework for the prefetching-based mobile dictionary. Second, we present a systematic way of determining the amount of prefetching data for each of packet-based and flat-rate billing cases. Third, by focusing on the English-Korean mobile dictionary for middle or high school students, we propose an intuitive method of determining the words to be prefetched in advance. Fourth, based on these determination methods, we propose an efficient prefetching algorithm. Fifth, through experiments, we show the superiority of our prefetching-based method. From this approach, we can summarize major contributions as follows. First, to our best knowledge, this is the first attempt to exploit prefetching techniques in mobile applications. Second, we propose a systematic way of applying prefetching techniques to a mobile dictionary. Third, using prefetching techniques we improve the overall performance of a network-based mobile dictionary. Experimental results show that, compared with the traditional on-demand approach, our prefetching based approach improves the average performance by $9.8%{\sim}33.2%$. These results indicate that our framework can be widely used not only in the mobile dictionary but also in other mobile Internet applications that require the prefetching technique.

• The Journal of the Korea Contents Association
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• v.18 no.5
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• pp.545-553
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• 2018

As the share of leisure culture increases these days, expectations are rising for the high quality of culture while increasing interest in leisure and tourism. The percentage of the population going on weekend trips to broaden the horizons of elementary, middle and high school students has continued to rise in proportion to the expectations for cultural enjoyment. We expect that visitors' weekend family activities will include relaxing, playing and educational purposes. Recent educational programs have moved from the past where only children were allowed to be onsite, to a shared style in which parents can engage in educational activities, potentially leading to the implicit involvement of family ties and family elasticity. The effects of education are not expressed by the period that ends in a single moment of experience, but by the continuity of training and experience. The same holds true for family affinity, communication and empathy. Providing opportunities for family experience and education is a national responsibility for broken family and restoring solidarity with the growing number of single-person households. Furthermore, it is a duty of museums and galleries today, and it is necessary to come up with methods to enhance family solidarity and family affinity. In particular, it is imperative to develop and provide educational programs for educational purposes at the Education Museum, and to develop " education for family " at the social level. This paper aims to analyze the results of all family participating education programs provided by family education programs at the Education Museum through family surveys and interviews, and to enhance the activation of family types education programs more actively.

• Korean Journal of Applied Biomechanics
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• v.16 no.3
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• pp.137-148
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• 2006

The purpose of this study was to compare muscle activity in the lower extremity during walking wearing jogging and roller shoes. Twelve male middle school students (age: 15.0 yrs, height 173.7 cm, weight 587.7 N) who have no known musculoskeletal disorders were recruited as the subjects. Seven pairs of surface electrodes (QEMG8, Laxtha Korea, gain = 1,000, input impedance >$1012{\Omega}$, CMMR >100 dB) were attached to the right-hand side of the body to monitor the rectus femoris (RF), vastus medialis (VM), vastus lateralis (VL), biceps femoris (BF), tibialis anterior (TA), and medial (GM) and lateral gastrocnemius (GL) while subjects walked wearing roller and jogging shoes in random order at a speed of 1.1 m/s. An event sync unit with a bright LED light was used to synchronize the video and EMG recordings. EMG data were filtered using a 10 Hz to 350 Hz Butterworth band-passdigital filter and further normalized to the respective maximum voluntary isometric contraction EMG levels. For each trial being analyzed, five critical instants and four phases were identified from the recording. Averaged IEMG and peak IEMG were determined for each trial. For each dependent variable, paired t-test was performed to test if significant difference existed between shoe conditions (p<.05). The VM, TA, BF, and GM activities during the initial double limb stance and the initial single limb stance reduced significantly when going from jogging shoe to roller shoe condition. The decrease in EMG levels in those muscles indicated that the subjects locked the ankle and knee joints in an awkward fashion to compensate for the imbalance. Muscle activity in the GM for the roller shoe condition was significantly greater than the corresponding value for the jogging shoe condition during the terminal double limb stance and the terminal single limb stance. Because the subjects tried to keep their upper body weight in front of the hip to prevent falling backward, the GM activity for the roller shoe condition increased. It seems that there are differences in muscle activity between roller shoe and jogging shoe conditions. The differences in EMG pattern may be caused primarily by the altered position of ankle, knee, and center of mass throughout the walking cycle. Future studies should examine joint kinematics during walking with roller shoes.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.11 no.1
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• pp.16-26
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• 2000

Objectives：This study was done as a part of investigating individual and socioenvironmental factors affecting test anxiety in adolescent. The focusing of this study was detecting specific family enviromental factors affecting worry and emotionality of test anxiety. Methods：The subjects of this study were 880 middle and high school students in Seoul, Korea. To evaluate test anxiety level, Spielberger's Test Anxiety Inventory was applied and to evaluate familial factor, Moos and Moos' Family Environmental Scale was done. Results：The results were as follows. 1) Total and worry part of test anxiety scores were negatively correlated with cohesion and independence scores. Total, worry, and emotional part of test anxiety scores were positively correlated with achievement orientation and control scores. 2) High test anxiety group showed higher achievement orientation and control scores, and lower cohesion scores than low test anxiety group. 3) The higher socioeducational level of parents were, the higher three subscale (cohesion, independence, and achievement orientation) scores were, except control score. Conclusion：In therapeutic approach of adolescent's test anxiety, the importance of education and treatment of their parents should be emphasized. Parents should set their children's appropriate achievement goal, encourage their children's independency instead of control. Cohesion of familial members are also needed.

• Journal of Korean Home Economics Education Association
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• v.29 no.2
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• pp.67-84
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• 2017

This study investigated the influence of life satisfaction, accomplishment value, peer attachment, and relationship with teachers on the self-esteem of adolescents in three time points. The study population consisted of a nationally representative sample of middle school 1st grade students who completed the Korean Children and Youth Panel Survey(KCYPS) of the National Youth Policy Institute in 2010, 2012, and 2014. Descriptive statistics used included frequency, percentage, average, and standard deviation; in addition, reliability, repeated measure ANOVA, and regression results were reported using SPSS statistics. The results were as follows. First, this study showed that the longitudinal changes of self-esteem, life satisfaction, accomplishment value, peer attachment, and relationship with teachers were significantly different across three time points. Second, longitudinal changes in adolescents' self-esteem, life satisfaction, peer attachment, and relationship with teachers differed by gender, but accomplishment value did not. Third, life satisfaction was the most influential to self-esteem and peer attachment was the second most influential in the three data sets after controlling for gender, parents' academic attainment, and residential area. The influence of life satisfaction on self-esteem decreased across the three time points, but that of peer attachment increased over time. Instruction on life satisfaction and peer attachment needs to be more highlighted in Home Economics classes to enhance the self-esteem of adolescents.

• Korean Journal of Health Education and Promotion
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• v.12 no.1
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• pp.128-150
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• 1995

본 연구의 목적은 중학생의 보건교육에 대한 요구도를 살피기 위해 먼저 현재 자신이 알고 있는 보건지식에 대한 만족도와 보건교육에 대한 필요도 및 이에 영향을 미치는 요인에 대해 알아보고, 이와 관련하여 보건지식에 대한 만족도와 보건교육에 대한 필요도가 보건교육 요구도에 미치는 영향을 분석해 보는 데 있다. 연구를 위한 조사대상으로 경기도 소재 M, S 중학교의 1,2학년 전체 학생 688명을 선정하였고, 1994년 12월 1일부터 15일까지 자기기입식 설문지를 통해 보건교육에 대한 요구도를 조사하였다. 본 연구의 결과는 다음과 같다. 1. 조사대상자의 분포는 남학생이 59.3%, 여학생이 40.7%였고, 자신의 건강상태에 대해 건강하다고 응답한 학생이 78.9%, 건강하지 않다고 응답한 학생이 21.1%였다. 또한 현재 알고 있는 보건지식에 대해 만족한다고 응답한 학생은 68.2%였고, 31.8%의 학생이 만족하지 않는다고 응답하였다. 보건교육에 대한 필요도에 대해서는 92.7%의 학생이 필요하다고 응답하였다. 2. 보건교육에 대한 요구도에서는 첫째, 보건교과설정에 대해 45.6%가 찬성하였고, 둘째, 보건교육 실시시기에 대해서는 82.8%가 유치원 및 국민학교에서부터 시작되어야 한다고 하였다. 셋째, 보건교육의 적정시간에 대해 82.4%가 1주일 또는 1달에 1-2시간이라고 하였으며, 넷째, 보건교육 담당교사에 대해서는 63.2%가 보건교육 전문가가 담당하여야 한다고 응답하였다. 다섯째, 보건교육 내용에 대한 선호도 순위는 구급처치, 안전교육, 영양, 환경, 음주와 흡연 및 약물남용, 구강보건, 개인위생, 식품위생, 전염병관리, 성교육, 건강과 운동, 정신건강, 비전염성질환 관리, 공중보건, 의료기관의 기능 순이었다. 3. 현재 알고 있는 보건지식에 대한 만족도에 영향을 미치는 변수로는 성(p<0.01). 형제순위(p<0.05), 아버지의 학력(p<0.01), 어머니의 학력(p<0.01), 학업성적(p<0.05)이었으며, 보건교육 필요도에 영향을 미치는 변수는 성(p<0.05), 어머니의 학력(p<0.05), 학업성적(p<0.01)이었다. 4. 현재 알고 있는 보건지식에 대한 만족도에 따라 보건교육에 대한 요구도에 차이가 나타났다. 보건지식에 대해 만족하고 있지 못한 비만족군의 경우 보건교과의 설정에 대해 만족군보다 더 적극적으로 찬성하였고(p<0.05), 보건교육의 실시 시기에 대해서는 유치원 시기부터가 적정하다고 응답하였다(p>0.01). 보건교육의 내용선정에 있어서도 만족군과 비만족군간의 차이가 나타났는데, 만족군의 경우는 안전교육, 건강과 운동, 공중보건, 비만족군의 경우는 성교육을 요구하였다(p<0.05). 5. 보건교육에 대한 필요도에 따라 보건교육에 대한 요구도에 차이가 나타났다. 보건교육이 필요하다고 응답한 필요군의 경우 보건교과의 설정에 대해 적극적으로 찬성하였다(p<0.01). 또한 필요군은 보건교육의 실시 시기에 대해 유치원 시기부터가 적정하다고 응답한 반면, 보건교육이 필요하지 않다고 한 비필요군의 경우는 중학교 이후부터 적정하다고 응답하였다(p<0,01). 보건교육의 내용선정에 있어서도 음주와 흡연 및 약물남용, 식품위생, 건강과 운동, 비전염성질환 예방을 제외한 내용에서 필요군과 비필요군간의 차이가 나타났다(p<0.05).

• Korean Journal of Health Education and Promotion
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• v.14 no.1
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• pp.161-172
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• 1997

In order to assess the physical growth and development, and nutritional status of primary, middle and high school students in the city of Seoul, physiques of 4, 041 persons(Male : 2, 096, Female: 1, 945) were measured from March 1 to July 31 in 1995 and variouis physical and nutritional indices, maximum growth age related to them were calculated. The results are as follows: 1. Physical Growth and Development The growth of body height showed straight linear development among male in the ages 7~16 and among female 7~14, and after that showed slower development. The age of cross over between two sexes was between 11.5 to 12.5 years of age. The maximum growth age was between 11 and 12 years of age(7.28cm) in male and between 11 aqnd 12 years of age(9.77cm) in female. In terms of body weight, it also showed straight linear development among male in the ages 7~16 and among female 7~14, and after that showed slower development. The maximum growth age was between 11 and 12 years of age(7.64kg) in male and between 11 and 12 years of age(8.l9kg) in female. In terms of chest girth, it showed two step development among male in the age of 7~13 and 13~17, and among female in the age of 7~14 and 14~17. The age of cross over between two sexes was 11 and 12 years of age. In terms of sitting height, it showed two step development in the age of 7~14 and 14~17 of both sexes and the age of cross over between two sexes was between 10.5 to 14.5 years of age. The maximum growth age was between 11 and 12 years of age(3.64cm) in male and between 11 and 12 years of age(5.98cm) in female. 2. Maximum Growth Age of Physical Growth and Development In body height, MGA was 10.59 for male and 10.34 for female which showed that MGA for both sexes appeared in similar periods. In body weight, MGA was 10.30 for male and 10.30 for female which showed that MGA for both sexes appeared in similar periods. In chest-girth, MGA was 14.74 for male and 11.60 for female which showed that MGA for female appeared about 3 years earlier than for male. In sitting height, MGA was 11.69 for male and 11.38 for female which showed that MGA for both sexes appeared in similar periods. Maximum growth ages of physiques appeared in order of body height 〉 body weight 〉 sitting height 〉 chest-girth.