• KSII Transactions on Internet and Information Systems (TIIS)
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• 제12권12호
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• pp.5634-5653
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• 2018

Internet of things (IoT) is based on a global dynamic information network with cloud services where a great number of devices (things) exchange data to provide added-value services and products. There are several commercial and open source IoT platforms available in the market to connect devices to internet; however, they have cost and operational constraints that make them not suitable for academic projects. In this work, an IoT platform, known as Novus-io, is introduced in order to support academic projects for undergraduate students. With this platform and proper training, undergraduate students from different majors (not only from information technology and electronics) are capable to upgrade their school projects with IoT functionalities. The objective of this approach is to provide to any undergraduate student skills and knowledge on IoT, so they will be prepared, in their imminent step toward professionalism, to understand the relevance of digital services in today's world.

• Communications for Statistical Applications and Methods
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• 제29권3호
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• pp.333-351
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• 2022

The skew-t distribution is an attractive family of asymmetrical heavy-tailed densities that includes the normal, skew-normal and Student's-t distributions as special cases. In this work, we propose an EM-type algorithm for computing the maximum likelihood estimates for skew-t linear regression models with censored response. In contrast with previous proposals, this algorithm uses analytical expressions at the E-step, as opposed to Monte Carlo simulations. These expressions rely on formulas for the mean and variance of a truncated skew-t distribution, and can be computed using the R library MomTrunc. The standard errors, the prediction of unobserved values of the response and the log-likelihood function are obtained as a by-product. The proposed methodology is illustrated through the analyses of simulated and a real data application on Letter-Name Fluency test in Peruvian students.

• 대한영양사협회학술지
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• 제18권2호
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• pp.155-169
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• 2012

The purpose of this study was to explore the relationship between student's foodservice satisfaction and foodservice employee's job satisfaction at elementary schools. The survey was conducted on 5th and 6th grade students and foodservice employees at 19 elementary schools in Gwangju, Gyeonggi. Statistical data analysis was completed using SPSS ver. 17.0 for descriptive analysis, frequency analysis, independent sample t-test, and ANOVA. Students were highly satisfied with 'variety of menu' (3.78) and 'food taste' (3.75). The healthy group and no plate waste group showed significantly higher satisfaction levels on seven items, except 'sanitary utensil', as compared to others. Foodservice employees had high levels of satisfaction with human relationships and their jobs, but they were dissatisfied with their wages. Older employees had a high level of satisfaction with 'relationship with a dietitian' (P<0.05), whereas employees with a low level of education exhibited higher 'respect and reflection of his/her opinion on the duty' (P<0.01) and 'current duties' (P<0.05) as compared to others. The group with higher student satisfaction showed significantly higher employee job satisfaction for 11 items, including 'cooperation with co-workers' (P<0.01), 'relationship with a dietitian' (P<0.05), and inversely, the group with higher job satisfaction exhibited significantly higher student foodservice satisfaction for all nine items. Therefore, foodservice satisfaction and job satisfaction have a mutually positive influence on each other.

• 한국과학교육학회지
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• 제15권1호
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• pp.6-16
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• 1995

The purpose of this study is to investigate elementary school 6th grade children's preconception on body's digestion, circulation, breathing and excretion. By means of questionnaire, teacher is presented with misconception which students may have. On the basis of this way, firstly they draw up and put in free-concepts were investigated from objective test and sought after misconeption which student had and inquired whether the result of response made difference by sex and areas or not The result of study is as follows: 1. In the course of investigating and analyzing mis-preconecptios, teacher had misconceptions partially, as like students. 2. Many a student have misconceptions: nourishment in made for itself in body. 3. In circulation range most of students know that heart is making blood, and they don't make conception that blood is nourishment which was eaten from food. 4. They know the breath is only physiological function: they breathe to live. All air-breathing is necessary. 5. They are not relevant blood in course of urine and sweat formation they have non-scientific conceptions which water eaten is so. They know that all of sweat and urine and ordure is excretion. To sum up, many student have misconceptions as for digestion and circulation and breath and excretion of body especially. Circulation and excretion is more so. if inspection in a field of sex, they will know male had less misconceptions than female. in a field of region, student from rural are as had more misconceptions than the one from urban areas.

• 한국운동역학회지
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• 제16권4호
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• pp.153-164
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• 2006

This thesis is focused on kinematical and kinematical analysis of each types(Type #1 : use both swing of arm and reaction of knee, Type #2 : Use only swing of arm, not reaction of knee, type #3 : Neither use of swing of arm nor reaction of knee) of vertical jumps according to gender of High School Students. The subjects of this study is High School Student's male and female, 5 each, for analyzation of actions 3D image analyzing and GRF machines were used. To identify the differences of analyzed variables, an independent T-test on gender, an One-way ANOVA on types were used. Summery of the results are stated below. first of all, female students showed differences on Hip Joint angle and Joint Velocity from male students on Kimentic Variable. So training on hip joint force of flection and extension of female students is needed. Both male and female students showed relatively bigger result of arm's Angular Momentum than thigh's Angular Momentum on Type #1. This is regarded of faster Joint Velocity of Arm. Bigger result of female students of arm's contribution on Type #1 than male students can be said as Female student's weaker hip joint's angular muscle force than male student's, so the dependency of arm is heavier than male students. In Kinetic variable, GRF showed bigger result on male students than female students. So female students need to enhance joint's torque to increase GRF than male students. On vertical Impulse, high numeric data of last two reaction of tiptoe of vertical GRF and antero-posterior GRF helped increasing impulse by extending action time of force.

• 한국과학예술포럼
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• 제32권
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• pp.319-334
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• 2018

본 연구는 '문학-미술-과학' 융합교육 프로그램의 개발과 적용을 통하여 학습자의 상상력 및 창의력의 향상을 확인하기 위한 사례 연구이다. 그 연구대상은 군산술산초등학교 1-4학년 학생 29명 중 25명이었다. 연구 시기는 2017년 9월부터 12월까지 4개월의 기간이었으며, 장소로는 군산술산초등학교 미술실을 활용했다. 10개 프로그램은 학년별로 매주 월요일부터 금요일까지 오후 1시부터 3시까지 2시간을 1회기로 총 10회기가 진행되었다. 연구자는 본 프로그램 10개 주제를 평면조형 8개와 입체조형 2개로 정하고, 여름방학 동안에 스토리텔링 작업을 완료했다. 그리고 그것들을 저:중:고(3:5:2)의 차별화된 수준으로 조정하였다. 평면조형은 '괴물 고릴라 영화 이야기'(저), '경주 최씨 정신 배우기'(중), '천연재료로 만든 내 친구 이야기'(저), '나의 꿈 해몽하기'(중), '내 스마트폰 속의 사물들을 모아보기'(중), '시집보내기 재판놀이'(중), '내가 좋아하는 동시를 그림 그리기'(고), '내가 좋아하는 동요를 그림 그리기'(고)이며, 입체조형은 '내 마음의 파랑새 찾기'(저), '내가 갖고 싶은 사물 만들기'(중)였다. 연구자는 주제별로 각기 다른 미술표현 기법을 활용했는데, 그것은 순서대로 마블링 기법, 한지공예 기법, 콤바인 페인팅 기법, 콜라주 기법, 촛불 그을림 기법, 콜라주 기법, 상상화 기법, 상상화 기법, 지점토공예 기법, 상상화기법이었다. 그리고 프로그램을 진행하면서 재료들의 생육과정이나 제조과정과 관련된 과학 지식을 전달하였다. 본 프로그램을 진행하기 이전과 진행한 이후에 토란스(Ellis Paul Torrance, 1915-2003)의 TTCT(The Torrance Tests of Creative Thinking) 도형 검사 B형과 A형으로 학습자의 융합적 사고력 및 감성적 체험을 고찰했다. 그리고 그 자료를 토대로 검사결과의 평균 차이의 유의성을 검증하기 위해서 대응 t-검증을 실시하였다. 창의력 요소별 및 평균 창의력 지수별로 분석한 결과 '유창성'에서는 유의한 차이(t=3.47, p<.01)가 나타났으며, '독창성'에서도 유의한 차이(t=3.59, p<.01)가 나타났다. 연구자가 이와 같은 작품의 제작과정, 결과물의 사진 자료 등을 정리, 분석한 결과는 다음과 같다. 첫째, 미술중심 STEAM 수업으로 진행한 본 프로그램으로부터 문학적인 내용을 미술적인 내용으로 전환시키는 학습자의 융합적 사고력에서 종합적인 문제해결 능력이 향상되었다. 둘째, 학습자는 10가지 미술표현 기법을 활용한 미술중심 STEAM 수업을 통하여 학습에 대한 다양한 상상력, 창의성, 감성적 체험을 거두었다. 셋째, 학습자는 문제해결 과정에서 친구들과의 협동심, 의사소통, 배려하는 마음이 성숙해졌다. 넷째, 10가지 미술표현 기법을 진행함에 있어서 도입과 종료 시에 각 기법과 관련된 유명 작가와 작품의 소개를 통하여 학습자의 자기만족감이 고취되었다. 이와 같이 학습자의 융합적 사고력과 감성적 체험의 영역에 대한 통계 수치는 유의성이 있는 것으로 나타나 대부분의 학습자가 본 프로그램을 통하여 자신감 있게 창의적으로 표현해내는 능력의 향상을 가져왔음을 일러준다.

• Journal of Information Science Theory and Practice
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• 제11권1호
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• pp.14-30
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• 2023

The purpose of this study is to compare research trends in the information and communication technology (ICT) field between North and South Korea and analyze the differences by using data mining. Frequency analysis, clustering, and network analysis were performed using keywords from seven South Korean and two North Korean ICT academic journals published for five years (2015-2019). In the case of South Korea (S. Korea), the frequency of research on image processing and wireless communication was high at 16.7% and 16.3%, respectively. North Korea (N. Korea) had a high frequency of research, in the order of 18.2% for image processing, 16.9% for computer/Internet applications/security, and 16.4% for industrial technology. N. Korea's natural language processing (NLP) sector was 11.9%, far higher than S. Korea's 0.7 percent. Student education is a unique subject that is not clustered in S. Korea. In order to promote exchanges between the two Koreas in the ICT field, the following specific policies are proposed. Joint research will be easily possible in the image processing sector, with the highest research rate in both Koreas. Technical cooperation of medical images is required. If S. Korea's high-quality image source is provided free of charge to N. Korea, research materials can be enriched. In the field of NLP, it calls for proposing exchanges such as holding a Korean language information conference, developing a Korean computer operating system. The field of student education encourages support for remote education contents and management know-how, as well as joint research on student remote evaluation.

• 한국보건간호학회지
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• 제16권2호
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• pp.388-399
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• 2002

This study would tend to clarify effects on knowledge and attitudes of smoking by preventive education for the fifth grade student in elementary school. It would also hope to contribute to activate smoking preventive education, improvement of health quality for the young and reduce school children's misdeeds. One hundred and sixty-eight school children, the fifth grade student in K city's elementary school have been gathered as testees and divided into two groups : 84 in an experimental group and other 84 in a group for comparison.. Data has been collected between 27th November, 2001 and 8th February, 2002 and methods, which were based on literature study, have been developed by myself and used after reliability test. The process has been formed in this order - pre-survey, experiment (smoking preventive education), the first post-survey and the second post-survey. The pre-survey was to fill the questionnaire and the post survey has done with the same way in 2 and 9 weeks later. The smoking preventive education has been carried out 4 times and the time for each experiment was 40 minutes. The collected data has been analysed by the purpose into $\chi^2-test$, t-test,. F-test, Duncan multiple range test with SPSS. The results of study would be as follows 1. The rate of smoking experience is $17.3\%$ and the biggest motive $(75\%)$ is curiosity. Also $5.4\%$ of respondents reply to have friends smoking a little. 2. The first hypothesis - the group with smoking preventive education would have much knowledge about smoking than comparison group - would be supported with statistical data (t=-3.329, p=.000). 3. The second hypothesis - the group with smoking preventive education would show higher attitude than the other group - would also be backed by statistically meaningful difference (t=-3.856, p=.000). 4. The variables of extent for smoking knowledge would be school record and the variables of extent for smoking attitude is friends' smoking, parents' reaction, experience until now and plan from now on.

• 한국콘텐츠학회논문지
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• 제7권2호
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• pp.125-131
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• 2007

학부생들이 쉽게 사용할 수 있는 기법인 반복 그린 함수 방법(IGFM)을 이용하여 복잡한 전자파 도파관스텁 구조를 이론적으로 엄밀하게 해석한다. lGFM은 그린 함수 접근법과 영역 반복법을 이용한다. IGFM의 간단한 공식화를 위해 단순한 수학 방정식만을 사용한 물리적인 반복 메커니즘을 이용한다. 전형적인 전자파 도파관 구조인 평행판 E평면 T접합 스텁에 대한 산란 특성을 IGFM 관점에서 이론적으로 공식화한다. 수치해석 결과를 주파수에 대한 반사와 투과 전력 관점에서 보인다.

• 한국초등수학교육학회지
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• 제11권2호
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• pp.177-197
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• 2007

본 연구에서는 Saito Noboru(재등 승(齋藤 昇)) 교수에 의해 실천 연구되었던 등산학습법 - 학습 요소 사이의 관계 및 전체 학습 내용의 체계적, 구조적 관계를 파악할 수 있도록 학습구조차트를 활용한 학습 방법 - 을 초등학교 저학년과 고학년 학생들에게 적용하는 실험 수업을 통해, 등산학습법이 학습자의 수학 학습에 미치는 영향을 살펴보고자 하였다.