• 천문학회보
• /
• 제42권2호
• /
• pp.81.4-82
• /
• 2017

We investigate velocity oscillations in the active region plage by using the high-spatial, high-spectral and high-temporal resolution spectral data acquired by the Interface Region Imaging Spectrograph (IRIS). From the Mn I $2801.907{\AA}$ (lower chromosphere), C II (lower transition region) and Si IV (middle transition region) lines, we measure the line of sight Doppler velocity at different atmospheric layers, and present results of wavelet analysis of the plage region with a range of periods from 2 to 8 minutes. In addition, we present correlations of the oscillations from the lower chromosphere to the middle transition region. Finally, we will discuss the regional dependence of the oscillation properties on physical properties such as temperature and magnetic field inclination.

• Human Ecology Research
• /
• 제60권1호
• /
• pp.53-68
• /
• 2022

Using a person-centered approach, the current study investigated latent profiles for the emotional and behavioral problems of students in sixth-grade in elementary school and second grade of middle school. The aim was to explore latent transition patterns and verify the factors affecting the transitions. The participants were 1,937 adolescents who responded to the 3^rd year (6^th grade of elementary school; Time 1), 4^th year (1^st grade of middle school), and 5^th year (2^nd grade of middle school; Time 2) of the Korean Children Youth Panel Study. Latent profile and latent transition analyses were performed. The results were as follows: first, the latent profile of emotional and behavioral problems changed from Time 1 to Time 2. The latent groups at Time 1 were classified into low, moderate, high, and externalizing-dominant, whereas at Time 2, five groups were identified: low, moderate, high, externalizing-dominant, and withdrawal-dominant. Second, transition analyses revealed that although 22.3-57.0% of latent groups remained unchanged, there were significant changes over time between groups, as a new group ('withdrawal-dominant') emerged in Time 2. Third, different factors influenced the latent profile transition of emotional and behavioral problems depending on the transition pattern. Higher levels of self-esteem, better relationships with peers and teachers, and lower levels of parental inconsistency meant emotional and behavioral problems had not worsened at Time 2. The results suggest that early interventions are needed during the transition from childhood to early adolescence.

• 한국콘텐츠학회논문지
• /
• 제21권8호
• /
• pp.201-212
• /
• 2021

교과 내용 흥미도는 교육과정 개정 및 교과서 개발에 도움을 주는 방식으로 학생보다는 교사 측면에서 연구되어왔다. 본 연구에서는 중·고 전환기에 해당하는 고등학교 1학년 학생들에게 생활 연계 차원에서 매우 의미 있는 가정과 내용을 중심으로 중학교에서 배운 내용과 고등학교에서 배운 내용에 대한 학생들의 흥미도를 알아보기 위해 고등학교 1학년 학생 227명을 대상으로 중학교 가정과 내용 17문항, 고등학교 가정과 내용 10문항으로 구성된 흥미도 검사 도구를 활용하여 자료를 수집하였다. 이를 성별 및 성취 수준별로 흥미도 차이를 분석하였다. 연구 결과에 따르면 중·고 전환기인 고등학교 1학년 학생들의 경우 청소년 발달 등 자신에 관한 관심은 가족의 요구나 가정생활에 관한 관심에 비해 상대적으로 높은 것으로 나타났다. 성별에 따른 차이는 나타나지 않았으나, 성취 수준에 따라 내용 흥미도에 차이가 나타났다. 이는 학습자의 발달과 학교급 전환기라는 학습자의 상황, 대학 입시 등 다양한 변인들을 함께 고려하여 내용 흥미도를 해석해야 함을 의미한다. 본 연구의 결과는 향후 교육과정 개정, 교과서 개발 및 교과 수업에서 고려해야 할 시사점을 제공하며, 학습자 중심 관점을 토대로 교과 내용에 대한 학습자의 흥미 정도를 세심하게 분석하고 활용해야 할 것이다.

• 대한가정학회지
• /
• 제35권1호
• /
• pp.401-414
• /
• 1997

This study examined the transition of costume in middle and high school girls after the abolition of school-uniform. Fashion photographs of $\ulcorner$Junior$\lrcorner$a Korean magazine for girls were used for the investigation. Skirts used mainly were changed in order of pleat tight flare and tight skirt And skirt length was changed in order of knee midi knee and mini. Slim baggy and straight pants together showed high frequency but after 1992 straight pants were used mainly. And pants of ankle length was prevalent. In jacket Hip line natural waist and H-line silhouette dominated. Silhouette of one-piece dress was changed in order or X line H line and A line. Semi fit and natural waist were prevalent. And length was changed in order of midi knee and mini. The coat of H line Loose semi fit and Knee length was the most frequently appeared style. Waist line of coat was changed in order of natural low no natural waist. In skirt blue white black and black were mainly in spring summer fall and winter respectively. In pants blue was used mainly regardless of the season, In jacket blue in spring and black in other seasons were used. In one-piece derss blue in spring red in summer black in fall and winter were used mainly. Black coat was used mainly. Therefore blue was the most frequently used color by middle and high school girls.

• 한국수학교육학회지시리즈A:수학교육
• /
• 제50권4호
• /
• pp.429-440
• /
• 2011

This paper analysed gifted middle students' conception of the definitions of point and line and the uses of definitions in proving. The findings of this paper suggest that the concept of mathematical definitions is very unnatural to students, therefore teachers and textbooks need to explain explicitly the characteristics of mathematical definitions which are different from dictionary definitions using common sense. Also introducing undefined terms in middle school geometry would give students a critical chance to deal with the transition from dictionary definitions to mathematical definitions.

• Educational Technology International
• /
• 제24권1호
• /
• pp.81-114
• /
• 2023

The study aimed to qualitatively examine middle school students' engagement in distance instruction during the COVID-19 pandemic. The participants comprised 119 students from a girls' middle school in Seoul, South Korea. To gain an in-depth understanding of the students' experiences, we collected their reflective journals, which included structured items about their learning engagement at three timepoints in 2020: April, July, and December. The following are the results: 10 themes and 18 concepts were derived, and they were integrated into causal conditions (sudden transition due to COVID-19), contextual condition (technology readiness, school education context), central phenomena (high level of behavioral engagement, low emotional engagement), interventional conditions (recognizing the potential of online learning, situational awareness about COVID-19 and online learning), action/interaction phenomena (development and use of self-regulated learning strategies), and consequences (changes in practices and perception towards online learning). Based on the findings, engagement patterns of the participants were classified into five types: proactive, conservative, receptive, reactive, passive learners. The present study demonstrated important findings that are essential for the improvement and development of engaging online learning strategies in the future.

• 교육시설
• /
• 제20권2호
• /
• pp.26-29
• /
• 2013

• 대한간호학회지
• /
• 제9권1호
• /
• pp.31-40
• /
• 1979

The purpose of the study was undertaken to present transition of school nurses to analyze some factors related to them. 1. Overage increase rate of school nurses the year of 8 years (1970 - 1978) was 4.61% for the primary school, 2.14% for the middle school, and 15.26% for the high school which was the highest. The total number of school nurses was 1289. 2. The percentage of school working school nurses to the total schools was 14.6％ for the primary school, 7.1% for the middle school, and 15.2% for the high school in 1918. In Seoul was largest of 66.7% while that of kyongsangnamdo showed the lowest of 1.5%. 3, In 1978, the increase of school nurses was 17.9% for the private school which was highest while that of the nation and public school showed the lowest of 12.4%. 4. Studies for the Primary, middle and high school per school nurses in 1979 were 5,981.14,923.7,655 respectively. 5. Considering the age distribution of the total school nurses for the primary, middle and high schools was the most of 54.1% in 20s. Regarding the, career of school nurses, those who had worked for less than 5 years were 46.4% in 1970, while 51.8% in 1978. And the school nurses who had worked for less than 10 years reduced 71.3% from 82.7%. 6, There were close relationship between the number of school nurses and that of school, and a regression formular made as follow: SNi = -24.497+0.675 Si+ 0,196 Ni (School) (Nurses).

• 전기의세계
• /
• 제30권7호
• /
• pp.441-447
• /
• 1981

As a preceeding work for the study on dielectric characterstics of a kind of low density polyethylene introduced morphological change by mechanical method, glass transition temperature which is regarded as a macroscopic aspect for relaxation of molecular chain segments has been observed by means of temperature dependent dilatometric measurement. The origina specimen clearly shows two knees which correspond to two peaks (.gamma. and .betha. peak) in the intenal friction measurement, suggesting the existence of separated glass transition temperatures at 150.deg.k and 260.deg.k respectively. On the specimen irradiated to 100 Mrad both glass transition temperatures tend to shift towards high temperature sides because of crosslinking by irradiation. furthemore an evidence can be seen that radiation effect, even in amorphous phase, is also slelctive depending on slight morphological differences. The specimen extended to four times in length shows a peculiar nature such as negative linear thermal expansion coefficient increasing with temperature between 220.deg.k and ambient temperature and that this fact is interpreted by considering that c axis of the lattice aligns along the extended direction by drawing, further c axis inherently possesses the characteristics of negative linear thermal expansion coefficient. For the observations that the relatively small positive linear expansion on the specimen extended to ca. two times as well as the part below 220.deg.k of the specimen extended to four times, it is considered for the reason of the facts that the incompletely oriented region indicated as the middle part of Peterlin's model tends to restore partially to orginal arrangement-a kind of phase transition-as increasing with temperature.

• 보건의료산업학회지
• /
• 제2권1호
• /
• pp.84-104
• /
• 2008

In recent days, Korean society falls into disorder in sexual culture with transition of sexual consciousness by prevalence of sexual liberation trend through popularization of internet. Korean society, however, does not have essential counter-plans to cope with this disorder. In this paper, I investigated the realities about adolescent sexual consciousness, attitudes and behaviors around students in middle and high schools in order to propose educational courses for adolescent sexual problems. For the investigation, I made up a questionnaire and surveyed by 500 students in middle and high schools in a same area from 1st October, 2007 to 6th October, 2007 and I analyzed results from the survey. In the results, I found that males and the group having experience in acquaintance with the other sex reported more sexual consciousness. I also found that females and the group having no experience in acquaintance with the other sex reported more vestal consciousness.