• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2008년도 추계종합학술대회 B
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• pp.817-820
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• 2008

컴퓨터와 인터넷의 발달은 전통적인 교실교육을 벗어나 시공간을 초월한 사이버 교육을 가능하게 하였다. 그 결과 웹기반 학습환경에서는 학습자의 자기주도적인 학습이 가능하게 되었다. 효율적인 자기주도적 학습환경을 위해서는 학습시 어려움을 느끼는 학습자에게 스캐폴딩(scaffolding)이라는 적절한 도움과 지원을 제공해야 한다. 본 논문에서는 공업계고등학교 정보기술기초교과 컴퓨터의 원리 단원을 선정하여 학습자에게 적절한 스캐폴딩을 제공할 수 있는 웹 콘텐츠를 설계 및 구현한다.

• 한국산림과학회지
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• 제95권5호
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• pp.532-538
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• 2006

Triphala is an important combination of three important forest fruits, i.e., Emblica officinalis, Terminalia chebula and Terminalia bellirica. Chittagong region in Bangladesh was once rich in triphala trees presently subject to the depletion. Thus, these forest resources are being threatened day by day. The study was conducted to learn the present using pattern of the triphala, causes of its depletion and the conservation strategies agreed by the villagers. Eight major uses of triphala trees were recognized. It was revealed that 100% respondents used the triphala as fruit tree followed by 71-78% as fuelwod. The present status of growing stock of triphala was found in depleted condition particularly in the Muslim dominated area. It was found that unawareness was the major cause for depleting the triphala trees agreed by the 87% respondents followed by depleting the village groves by 84%. Awareness creation (100%) and induction of social forestry program (92%) were found major recomendations by the vilagers to retard depleting the triphala tree species in the Chittagong region of Bangladesh.

• The Plant Pathology Journal
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• 제37권3호
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• pp.258-267
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• 2021

Asian pear (Pyrus pyrifolia) is a widely cultivated and commercially important fruit crop, which is occasionally subject to severe economic losses due to latent viral infections. Thus, the aim of the present study was to examine and provide a comprehensive overview of virus populations infecting a major pear cultivar ('Singo') in Korea. From June 2017 to October 2019, leaf samples (n = 110) of pear trees from 35 orchards in five major pear-producing regions were collected and subjected to RNA sequencing. Most virus-associated contigs matched the sequences of known viruses, including apple stem grooving virus (ASGV) and apple stem pitting virus (ASPV). However, some contigs matched the sequences of apple green crinkle-associated virus and cucumber mosaic virus. In addition, three complete or nearly complete genomes were constructed based on transcriptome data and subjected to phylogenetic analyses. Based on the number of virus-associated reads, ASGV and ASPV were identified as the dominant viruses of 'Singo.' The present study describes the virome of a major pear cultivar in Korea, and looks into the diversity of viral communities in this cultivar. This study can provide valuable information on the complexity of genetic variability of viruses infecting pear trees.

• 창의정보문화연구
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• 제7권2호
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• pp.69-77
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• 2021

과거 프로그래밍은 컴퓨팅 관련 전공자들을 대상으로 일부의 학생들이 배우는 과목이었으나, 오늘날 소프트웨어 중심 산업이 도래함에 따라 컴퓨팅사고 교육과 함께 컴퓨팅 문제 해결의 도구로서 모든 전공 분야의 학생들에게 교육이 이루어지고 있다. 그러나 컴퓨팅 입문 과목을 필수로 이수해야 하는 학습자들은 익숙하지 않은 컴퓨팅 문제 해결 방식과 프로그래밍 언어라는 새로운 내용에 학습에 큰 어려움을 겪으며 학습 효과, 자신감, 흥미 저하와 같은 부정적인 현상으로 이어질 수 있다. 본 논문에서는 비전공자들이 프로그래밍 언어 과목을 학습하면서 겪는 어려움의 원인을 설문 조사, 일지 및 성취도를 질적 및 양적 연구로 분석하여 파악하고, 이를 최소화할 수 있도록 방안을 제시하여 향후 어려움을 최소화하는 교육 방안의 설계에 도움이 되고자 한다.

• 한국수학교육학회지시리즈A:수학교육
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• 제44권3호
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• pp.409-433
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• 2005

This article is to provide information on school contexts for learning and instruction of mathematics based on the results and data of TIMSS 1999. It is organized around two major topics: teacher and students achievement, instruction and students achievement In this article the following summarizes the major findings. First, about $50\%$ of Korean eight-grade students were taught mathematics by teachers in their 30s, and this was higher than the international average. Most of teachers in Korea had certification of teachers majors in mathematics. Korean teachers reported relatively low confidence to teach mathematics compared to other counties. And Korean students taught by teachers who believes they were well prepared attained low achievement scores in contrast to international result. Second, korean teachers spent about $50\%$ of their formally scheduled school time teaching their subject, but is was below the international average. They spent much more time on administrative duties and other related activities than other countries. Korean students reported that most of their class time were spent lecture style presentations by teacher. Also they reported that teachers showed them how to do mathematics. The percentages of Korean students were placed on the low level of index of emphasis on mathematics reasoning and problem-solving. The students taught by teachers who emphasized reasoning and problem-solving showed low achievement scores in contrast with result of the previous literatures. Korean teachers didn't seem to emphasize homework and assessments. Internationally, teachers frequently used teacher-made objective tests and projects or practical exercises, but Korean teachers die less in most of categories. Based on the above findings, this article presents implications about teacher education, reduction of administrative working in teachers tasks, using everyday life topics, as learning materials, specialization instruction methods for each subject matter. This article is a kind of descriptive and factual in nature, but some attempt has been made to contextualize these results focused on teachers and instruction.

• 대한의용생체공학회:의공학회지
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• 제28권6호
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• pp.811-816
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• 2007

The social activities of the elderly have been increasing as our society progresses toward an aging society. As their activities are increased, the occurrence of falls that could lead to fractures are increased. Falls are serious health hazards to the elderly and we need more thorough understanding of falls including the progress of falls and the impact area in various fall directions. Many of the traditional methods of falls research dealt with voluntary falls by younger subject since older subject can easily get fracture from voluntary falls. So, it has been difficult to get exact data about falls of the elderly. Here, we tried to capture the characteristics of the movements of major joints using three dimensional motion capture system during falls experiments using a moving mattress that can safely induce unexpected falls. Healthy younger subjects participated in the actual falls experiment and the moving mattress was actuated by a pneumatic system. The kinematic parameters such as velocities and accelerations of major segments were imported to a computer simulation environment and falls to hard surfaces were simulated in a computational environment using a realistic human model of aged persons. The simulation was able to give approximations to contact forces which can occur during actual falls.

• 한국문헌정보학회지
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• 제26권
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• pp.187-212
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• 1994

The present study examines the characteristics of the international literature of classification systems published in the period 1981-1990. The references in the 'Classification Literature' sections of International Classification and the references in these source items were examined. The present study focused on analyzing each of the following characteristics: format, subject, language, geographical origin, age, authorship and number of references. The findings from the data analyses show clearly that in the literature of classification systems, I) books were the most frequently cited format; 2) library and information science was the most frequently cited subject; 3) English was the major language; 4) the literature of each classification system was written predominently in English except for Library Bibliographic Classification; 5) the language of each source item was the same as that of the greatest number of references of that source item: 6) the U.S., Germany, India, Russia, and the U.K. were the major geographic origin of publication; 7) there was a very close relationship between country of publication and language: 8) the country of origin of the documents was cited more than any other country except for the U.S.: 9) Price's Index of the literature revealed that the literature was a soft science and the half-life of the literature was about 7.5 years; 10) there was a preponderance of single authorships; 11) the literature was not a scholarly or scientific literature, according to the average number of references in source items and the percentage of unreferenced items. The findings of this reference study provide a better understanding of the characteristics of the classification systems literature. They prove useful for the collection development and assist classification systems researchers to prepare linguistically for their careers and encourage international communication efforts.

• 기술혁신학회지
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• 제13권3호
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• pp.587-616
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• 2010

한국의 기초과학연구는 해방 후 백지상태에서 2008년 66,000 여 명의 이공계 대학 연구인력과 36,000여 SCI논문을 발표할 정도가 되었다. 통계가 존재한 1970년대 초를 기준으로 본다면 이공계 대학 연구인력은 38배, SCI논문은 1,317배 증가한 것이다. 본고는 이러한 현상의 전개과정과 발전동인에 대한 분석이다. 백지에서 출발한 기초과학연구라 정책이 가장 중요한 역할을 하였다고 평가되기도 하나, 본고에서는 정책의 세부내용이 무엇이고, 그 정책은 어떤 배경이 있었나를 검토한 것이다. 구체적 기초과학연구의 발전 연표를 작성하고, 이 연표에 속한 사건들이 가진 상황적인 나아가 정책적인 의미를 분석하는 방법을 택했다. 한국의 기초과학연구는 5기의 기간으로 구성됨과 핵심적으로 한 사건 15개가 있음을 보였다.

• 대한의용생체공학회:의공학회지
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• 제31권6호
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• pp.438-448
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• 2010

The social activities of the elderly have been increasing as our society progresses toward an aging society. As their activities are increased, the occurrence of falls that could lead to fractures are increased. Falls are serious health hazards to the elderly and we need more thorough understanding of falls including the progress of falls and the impact area in various fall directions. Many of the traditional methods of falls research dealt with voluntary falls by younger subject since older subject can easily get fracture from voluntary falls. So, it has been difficult to get exact data about falls of the elderly. Here, we tried to capture the characteristics of the movements of major joints using three dimensional motion capture system during falls experiments using a moving mattress that can safely induce unexpected falls. Healthy younger subjects participated in the actual falls experiment and the moving mattress was actuated by a pneumatic system. The kinematic parameters such as velocities of major segments were imported to a computer simulation environment and falls to hard surfaces were simulated in a computational environment using a realistic human model of aged persons. The simulation was able to give approximations to contact forces which can occur during actual falls. And we designed impact absorption system to reduce the impact during falls. We can adapt this system to fracture prevention system that we are going to study.

• 정보관리학회지
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• 제27권3호
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• pp.83-102
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• 2010

본 연구에서는 지구적 환경문제의 해결 방식으로서 환경과학 분야의 학술활동과 같은 학문적 접근 방식과 환경 NGO 중심의 환경운동과 같은 실천적 접근 방식을 두 가지 주요 흐름이라 보고, 이들 각각의 특성을 계량정보학적 분석을 통해 파악하고 비교하였다. 지난 10년 간 환경과학 분야에서 인용된 저널의 주제범주 간 동시인용 관계를 분석함으로써 이 분야의 지식 구조를 파악하였고, 환경 NGO의 웹 사이트에서 수집된 외부링크 데이터를 이용하여 이들의 관심 분야를 확인하였다. 또한 저널 논문과 NGO 뉴스에서 추출된 핵심어를 이용한 동시출현단어 분석을 통해 하위 주제를 파악하여 이들 간의 주제적 유사성과 상이성을 구체화하였다.