• Clinical and Experimental Pediatrics
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• 제51권12호
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• pp.1359-1362
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• 2008

혈우병 환자에서 가장 효과적인 치료 방침은 응고 인자의 보충으로, 그를 위해 안전하고 오래 사용할 수 있는 정맥 확보가 필요하다. 그러나 중심 정맥으로의 port는 전신 마취와 일정한 입원이 필요하고, 혈우병 환자에서 시행할 경우 보험 삭감의 문제도 있다. 본 저자는 두 명의 중증 혈우병 항체 환자에게 말초 삽입 중심 정맥관을 삽입하였다. 환자들은 잦은 출혈 소견 때문에 응고 인자를 투여 받았으며, 그로 인하여 혈관 확보에 어려움이 있었다. 환자 나이는 7세와 11세였다. 제 8 응고 인자 활성도는 모두 1% 이하였으며, 제 8 응고 인자 항체 수치는 각각 160과 26.3 BU/mL였다. 말초 삽입 중심 정맥관은 초음파 인도 하에, 외래에서, 국소 마취로 쉽게 삽입되었다. 말초 삽입 중심 정맥관 삽입은 잦은 출혈을 보이는 혈우병 환자에게 사용해 볼 수 있는 방법이다.

• 한국문헌정보학회지
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• 제43권4호
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• pp.29-57
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• 2009

본 연구는 독서과정에서 배경지식의 중요성을 인식하고 학교도서관의 독서교육에서 스키마 활성화 방안을 제시하는 연구를 진행하였다. 기초연구로서 독서의 과정과 스키마의 개념에 대해서 살펴보았으며 학교도서관 독서교육의 현황을 점검해 보았다. 스키마 활성화를 위해 학교도서관에서 필요한 독서전략을 살펴보고 이를 근거로 SQ3R독서법을 적용하여 수업모형을 개발하였다. 수업지도안을 설계하고 그래픽조직자를 활용한 학습 활동지를 제작하여 학교도서관에서 수업을 실시하였다. 전문가 검토의 결과를 수업모형에 반영하여 학교도서관의 독서교육에서 스키마 활성화를 위한 수업모형을 개발하였다.

• 디지털융복합연구
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• 제15권2호
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• pp.335-345
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• 2017

교수자가 학생들의 자율적인 팀 결성의 행동적 특성을 파악하는 것은 교과에서 팀 활동을 효과적으로 지도하기 위해 필요하다. 본 연구에서는 에이전트 기반의 컴퓨터 시뮬레이션을 통해 학생들의 팀 결성 행동 특성을 모사할 수 있는 컴퓨터 모형을 개발하였다. 실험을 통한 검증 결과 개발된 모형은 실제 학생들의 행동적 특성을 모사할 수 있음이 관찰되었다. 학생의 수와 팀원을 찾는 탐색의 범위가 클수록 팀의 결성이 안정화되기까지의 시간이 줄어들며 팀원을 찾지 못한 학생의 비율 또한 줄어들지만 어느 한계를 넘어서면 시간과 비율에 있어 큰 차이가 없음을 발견하였다. 또한 융 복합 교과 등에서 구성원 간의 이질성이 증가한다면 팀 구성 시간과 팀원을 찾지 못한 학생의 비율이 급격히 증가하므로 경우에 따라 교수자가 학생들의 팀 구성에 적절하게 개입하는 것이 필요함을 알 수 있었다. 개발된 모형을 통해 모의실험 함으로써 학생들의 팀 결성의 성격과 구조를 진단하고 분석할 수 있으므로 개발된 모형은 학생들의 팀 활동을 지원하는 도구로 유용하리라 기대한다.

• 실천공학교육논문지
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• 제8권1호
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• pp.1-7
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• 2016

본 연구에서는 종합 설계 교과와 학부 졸업기준이 되는 졸업 작품 구성에 관련된 주제 설정 및 작품 완성 단계까지 지도교수역할과 학생들의 진행 절차를 요약하고, 결과에 대한 학생들의 만족도를 조사 분석하였다. 1-2인을 1개조로 하여 담당교수를 지정하고 면담 및 기술 지도를 실시하였으며, 팀별로 자체 주제를 선정하도록 유도하였고, 2011년부터 2015년 12월까지 진행된 내용 중에서 소형 무인기 또는 스마트폰을 이용한 주제들에 대해 그 구성 결과를 제시하고, 2011년과 2015년 각각에서 1개 전공의 참여 학생들에 대한 작품 제작 활동 결과에 대해 설문 조사된 내용을 비교, 분석하였다. 이를 바탕으로 다음 학년도 개선사항에 대해 검토하고, 지속적인 교육 개선을 이루어 열정과 도전 정신을 갖춘 융합형 창의 인재가 양성되고 취업 및 창업과 연결되는 선순환 구조를 형성하는 방안을 공유한다.

• 임상간호연구
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• 제17권2호
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• pp.262-274
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• 2011

Purpose: To identify the effects of clinical practicum reinforcement program on nursing student's clinical competency and satisfaction in the ICU. Methods: The study utilized a quasi-experimental pretest-posttest research design. The participant was 76 senior nursing students, who were engaged in two week-long clinical practicum in ICU at the C university hospital in a G city, Korea. The clinical practicum reinforcement program was applied to the experimental group (n=39), while the control group (n=37) was involved in the conventional practicum program. The collected data were analyzed using descriptive analysis, $x^2$/Fisher's exact test, and t-test, ANCOVA with SPSS/WIN 18.0 program. Results: After 2 weeks' clinical practicum, the experimental group showed a statistically significant increase in the clinical performance abilities by self evaluation, when compared to the control group. Clinical instructor's evaluation on the student's clinical performance revealed that the experimental group showed higher level in nursing activity than that of the control group (p<.001). However, there was no significant difference between the two groups in terms of the satisfaction on the clinical practicum program except the learning guidance and the evaluation. Conclusion: The clinical practicum reinforcement program is an effective one for improving the student's clinical competency.

• 한국기후변화학회지
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• 제6권4호
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• pp.303-310
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• 2015

This study was conducted to estimate of carbon stock and greenhouse gas (GHGs) removals by tree species and forest type at Gangwon province. We used a point sampling data with permanent sample plots in national forest inventory and national emission factors. GHGs emissions was caclulated using the stock change method related to K-MRV and IPCC guidance. Total carbon stock and greenhouse gas removals were high in deciduous forest and species than in coniferous. The range of annual net greenhouse gas emissions in other deciduous species was from $-11,564.83Gg\;CO_2\;yr^{-1}$ to $-13,500.60Gg\;CO_2\;yr^{-1}$ during 3 years (2011~2013). On the other hand, coniferous forest was temporally converted to source due to reducing of growing stock in 2012. It was that growing stocks and forest area were likely to reduce by the deforestation and clear cutting. This study did not consider other carbon pools (soil and dead organic matter) due to the lack of data. This study needs to complement the activity data and emission factors, and then will find the way to calculate the greenhouse gas emissions and removals in the near future.

• 한국기후변화학회지
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• 제7권4호
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• pp.443-450
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• 2016

The major greenhouse gases (GHGs) in agricultural sector are methane ($CH_4$), nitrous oxide ($N_2O$), carbon dioxide ($CO_2$). GHGs emissions are estimated by pertinent source category in a guideline book from Intergovernmental Panel on Climate Change (IPCC) such as methane from rice paddy, nitrous oxide from agricultural soil and crop residue burning. The methods for estimation GHGs emissions in agricultural sector are based on 1996 and 2006 IPCC guideline, 2000 and 2003 Good Practice Guidance. In general, GHG emissions were calculated by multiplying the activity data by emission factor. The total GHGs emission is $10,863Gg\;CO_2-eq$. from crop cultivation in agricultural sector in 2013. The emission is divided by the ratio of greenhouse gases that methane and nitrous oxide are 64% and 34%, respectively. Each gas emission according to the source categories is $7,000Gg\;CO_2-eq$. from rice paddy field, $3,897Gg\;CO_2-eq$. from agricultural soil, and $21Gg\;CO_2-eq$. from field burning, respectively. The GHGs emission in agricultural sector had been gradually decreased from 1990 to 2013 because of the reduction of cultivation. In order to compare with indirect emissions from agricultural soil, each emission was calculated using IPCC default factors (D) and country specific emission factors (CS). Nitrous oxide emission by CS applied in indirect emission, as nitrogen leaching and run off, was lower about 50% than that by D.

• Tissue Engineering and Regenerative Medicine
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• 제15권6호
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• pp.761-769
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• 2018

BACKGROUND: Bioprinting has recently appeared as a powerful tool for building complex tissue and organ structures. However, the application of bioprinting to regenerative medicine has limitations, due to the restricted choices of bio-ink for cytocompatible cell encapsulation and the integrity of the fabricated structures. METHODS: In this study, we developed hybrid bio-inks based on acrylated hyaluronic acid (HA) for immobilizing bio-active peptides and tyramine-conjugated hyaluronic acids for fast gelation. RESULTS: Conventional acrylated HA-based hydrogels have a gelation time of more than 30 min, whereas hybrid bio-ink has been rapidly gelated within 200 s. Fibroblast cells cultured in this hybrid bio-ink up to 7 days showed >90% viability. As a guidance cue for stem cell differentiation, we immobilized four different bio-active peptides: BMP-7-derived peptides (BMP-7D) and osteopontin for osteogenesis, and substance-P (SP) and Ac-SDKP (SDKP) for angiogenesis. Mesenchymal stem cells cultured in these hybrid bio-inks showed the highest angiogenic and osteogenic activity cultured in bio-ink immobilized with a SP or BMP-7D peptide. This bio-ink was loaded in a three-dimensional (3D) bioprinting device showing reproducible printing features. CONCLUSION: We have developed bio-inks that combine biochemical and mechanical cues. Biochemical cues were able to regulate differentiation of cells, and mechanical cues enabled printing structuring. This multi-functional bio-ink can be used for complex tissue engineering and regenerative medicine.

• 대한지역사회영양학회지
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• 제25권6호
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• pp.451-463
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• 2020

Objectives: The purpose of this study was to develop and evaluate booklets and video clips to prevent children from picky eating. Methods: Based on a survey conducted on food preferences of preschool children aged 2 to 5 years, 14 kinds of less preferred vegetables were selected. Accordingly, educational videos, activity books, and teaching-learning guides were produced for preschool children using the 'food bridge' theory, and the educational materials were named "Friendly vegetables". Educational materials were distributed to childcare institutions, and their effectiveness was investigated for preschool children who were instructed on these materials once every 30 days from March to November, 2019. The children were examined for changes in their knowledge of names, colors, taste/texture, methods of cultivation, and preferences for vegetables before and after the instructional course. Results: The awareness of vegetables increased significantly in younger children and the picky eating group. When the assessment was carried out in terms of vegetable knowledge, it was observed that the younger the age or the pickier the in eating food, the more effective the education is compared to the counter part. The preference for vegetables also increased after the instruction compared to the pre-instruction period, but significant changes were seen only in the 2~3 year age group for boys and girls. Also, only the picky group of girls showed changes in preference. The children's average interest in the education materials was 3.85 points out of 5 points. Conclusions: Through this study, we have developed educational materials for standalone use in childcare facilities and confirmed that they have a significant effect on improving awareness and preferences related to vegetables. In summary, the younger the age or the pickier the child in eating food, the more effective the education. It is believed that additional education on mealtime guidance is needed which can alter the eating behavior of preschool children and improve their diet. It is proposed to widen the scope of use of the materials by collecting diverse opinions from child care teachers.

• International Journal of Computer Science & Network Security
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• 제21권3호
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• pp.287-294
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• 2021

Modern small farms are important link components in the structure of the world agro-industrial complex. It ensures the food and nutritional sustainability of the country exclusively at the local regional level. The purpose of the research is to examine the role of farming in ensuring nutritional security and food stability based on the analysis of the Food Sustainability Index (FSI). Research methods: modeling, abstraction, analogy, analysis, synthesis, formalization, logical abstraction, theoretical cognition, systematization and classification, abstract-logical, etc. Results. Having analyzed the Food Sustainability Index for 2018, it has been established that there is a lack of a clear relationship between the pace of economic development and the level of food and nutritional sustainability. In addition, this study has identified the countries with the largest number of small farms, as well as the number of farms within the region. The correlation between the size of the farm and the area of agricultural land that it cultivates has been determined. The problems faced by small farms in the process of their activity have been analyzed. The programs implemented in the field of agro-industrial complex development by international profile institutions have been systematized. Particularly, the regional structure of agricultural development programs under the guidance of IFAD is defined, as well as the areas to which they are directed. Specific measures taken by governments to stimulate the development of small farms have been outlined. Reasonable conclusions have been formed based on the study. The direction of future research is seen in the assessment of the export potential of small farms in terms of range, volume of export deliveries and geographical direction of movement of their products.