• 산경연구논집
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• 제9권8호
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• pp.35-40
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• 2018

Purpose - The purpose of this study is to conduct a monitoring study on the learning process of e-learning contents. This study has two research objectives. First, by conducting monitoring research on the learning process, we aim to explore the implications for content development that reflects future student needs. Second, we want to collect empirical basic data on the estimation of appropriate amount of learning. Research design, data, and methodology - This study is a case study of learner's learning process in e-learning. After completion of the study, an in-depth interview was made after conducting a test to measure the total amount of cognitive load and the level of engagement that occurred during the learning process. The tool used to measure cognitive load is NASA-TLX, a subjective cognitive load measurement method. In the monitoring process, we observe external phenomena such as page movement and mouse movement path, and identify cognitive activities such as Think-Aloud technique. Results - In the total of three research subjects, the two courses showed excess learning time compared to the learning time, and one course showed less learning time than the learning time. This gives the following implications for content development. First, it is necessary to consider the importance of selecting the target and contents level according to the level of the subject. Second, it is necessary to design the learner participation activity that meets the learning goal level and to calculate the appropriate time accordingly. Third, it is necessary to design appropriate learning support strategy according to the learning task. This should be considered in designing lessons. Fourth, it is necessary to revitalize contents design centered on learning activities such as simulation. Conclusions - The implications of the examination system are as follows. First, it can be confirmed that there is difficulty in calculating the amount of learning centered on learning time and securing objective objectivity. Second, it can be seen that there are various variables affecting the actual learning time in addition to the content amount. Third, there is a need for reviewing the system of examination of learning amount centered on 'learning time'.

• Safety and Health at Work
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• 제5권3호
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• pp.118-124
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• 2014

Background: Satisfactory completion of mine safety training is a prerequisite for being hired and for continued employment in the coal industry. Although training includes content to develop skills in a variety of mineworker competencies, research and recommendations continue to specify that specific limitations in the self-escape portion of training still exist and that mineworkers need to be better prepared to respond to emergencies that could occur in their mine. Ecological models are often used to inform the development of health promotion programs but have not been widely applied to occupational health and safety training programs. Methods: Nine mine safety trainers participated in in-depth semi-structured interviews. A theoretical analysis of the interviews was completed via an ecological lens. Each level of the social ecological model was used to examine factors that could be addressed both during and after mine safety training. Results: The analysis suggests that problems surrounding communication and collaboration, leadership development, and responsibility and accountability at different levels within the mining industry contribute to deficiencies in mineworkers' mastery and maintenance of skills. Conclusion: This study offers a new technique to identify limitations in safety training systems and processes. The analysis suggests that training should be developed and disseminated with consideration of various levels-individual, interpersonal, organizational, and community-to promote skills. If factors identified within and between levels are addressed, it may be easier to sustain mineworker competencies that are established during safety training.

• 한국보육지원학회지
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• 제9권5호
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• pp.5-35
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• 2013

본 연구는 유아교사로 살아가면서 교육대학원에 진학하여 현장연구를 실행해 본 유아교사 3인을 대상으로 심층 면담하여 그들의 경험을 드러내고 그 의미를 알아보고자 하였다. 현장연구의 실행과정은 그들의 현장에서 출발하였고, 연구주제, 자신의 관점과 맞는 적합한 연구방법을 고려하게 되며, 현장 속으로 다시 들어가게 된다. 익숙하게 느껴졌던 현장은 예상치 못한 반응에 낯설게 느껴지기도 하고 연구과정의 불확실성으로 불안하기도 했지만 점차 연구의 탄력을 더하여 드디어는 해냈다는 희열을 맛보게 되었다. 이러한 경험을 통해 자신을 돌아보고 집중과 열정을 통해 타성에서 벗어날 수 있는 기회를 갖게 되었다. 또한 일상을 의미있게 하는 기록의 중요성을 깨닫고, 실패가 아닌 새로운 출발로서의 과정의 소중함을 느꼈으며, 폭넓은 관점으로 스스로 의미를 부여하려 노력하였다. 그리고 실행연구자적 삶을 살아가고 있는 자신을 발견하였다. 본 연구를 통해 현장교사들이 충분히 연구자가 될 수 있음과 교사 자신이 이를 자각해나가는 것이 필요함도 확인할 수 있었다.

• 대한치과교정학회지
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• 제45권3호
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• pp.121-129
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• 2015

Objective: This study aimed to assess three-dimensional changes in the temporomandibular joint positions and mandibular dimensions after correction of dental factors restricting mandibular growth in patients with Class II division 1 or division 2 malocclusion in the pubertal growth period. Methods: This prospective clinical study included 14 patients each with Class II division 1 (group I) and Class II division 2 (group II) malocclusions. The quad-helix was used for maxillary expansion, while utility arches were used for intrusion (group I) or protrusion and intrusion (group II) of the maxillary incisors. After approximately 2 months of treatment, an adequate maxillary arch width and acceptable maxillary incisor inclination were obtained. The patients were followed for an average of 6 months. Intraoral and extraoral photographs, plaster models, and cone-beam computed tomography (CBCT) images were obtained before and after treatment. Lateral cephalometric and temporomandibular joint measurements were made from the CBCT images. Results: The mandibular dimensions increased in both groups, although mandibular positional changes were also found in group II. There were no differences in the condylar position within the mandibular fossa or the condylar dimensions. The mandibular fossa depth and condylar positions were symmetrical at treatment initiation and completion. Conclusions: Class II malocclusion can be partially corrected by achieving an ideal maxillary arch form, particularly in patients with Class II division 2 malocclusion. Restrictions of the mandible in the transverse or sagittal plane do not affect the temporomandibular joint positions in these patients because of the high adaptability of this joint.

• Spatial Information Research
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• 제15권3호
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• pp.251-266
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• 2007

제1, 2차 국가GIS사업이 완료되고 제3차 국가GIS사업이 추진되고 있는 시점에 국가GIS사업의 활용도는 여전히 낮은 실정이다. 1, 2차 국가GIS사업으로 국토공간정보기반이 갖추어졌기 때문에 향후 GIS의 활용도는 지금보다는 훨씬 높아질 것으로 예상된다. 특히 유비쿼터스 시대를 맞아 GIS에 대한 국가적인 수요의 대폭적인 증가가 예상됨에 따라 기 구축된 국가GIS사업의 활용분야가 보다 넓어질 것이다. 이를 위해 본 연구에서는 지금까지 추진해 온 국가GIS사업 중에 우리나라에서만 독특한 형태로 수행되고 있는 GIS활용체계사업에 중점을 두고 그 추진과정 및 실적을 평가하였다. 특히 이를 위해 행정업무에 실제 활용하는 지자체의 GIS 활용실태를 심층 조사하고 지자체 및 국가차원에서 GIS활용을 제고하는데 장애요인을 분석해 그 해결방안을 모색해 보고자 한다. 이 연구에서 제시된 결과는 향후 수행될 제3차 국가GIS기본계획 수정계획 및 제4차 국가GIS기본계획 수립의 기초 자료로 활용하는데 일조하고자 한다.

• 한국어교육
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• 제28권4호
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• pp.63-86
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• 2017

This research aims to evaluate the effects and the shortcomings of strategies for teaching paraphrasing to foreign university students. For this study, the effects of teaching paraphrasing skills on student's academic writing was investigated through the assessment of pre- and post-test writing tasks and through a focus group interview. The teaching of paraphrasing was divided into 3 instructional sessions and the focus group interview was conducted at the end of the last session. After each instructional session three trained assessors evaluated the outcomes of pre and post task writings; the in-depth focus group interviews were conducted on seven of the students in order to define better positive effects as well as shortcomings. By comparing the scores of pre- and post-task assignments it is possible to affirm that there is a meaningful difference for overall scores; moreover, in an analysis conducted on each single sub-element of the paraphrasing skill, it emerged that except for "task completion", all other four elements of "structure", "understanding core content", "change of expression" and "academic expressions" showed a statistically significant improvement in performance. On the other hand, as a result of the focus group interview, it was possible to individuate as main shortcomings insufficient vocabulary knowledge, poor overall comprehension of the reference material, lack of practice and difficulty in connect sentences organically. It is possible to consider these elements as limiting factors in understanding the reference material and making correct citations by the students. Therefore, we suggest as supplementary instructional strategies a deeper attention to the difficulty level of the text, the introduction of devices to understand better the content of the reference material and an integrated practice of the paraphrasing skill.

• 한국노년학
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• 제30권1호
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• pp.1-20
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• 2010

본 연구는 '요양보호사 교육과정 경험의 본질은 무엇인가'라는 연구 질문을 가지고 요양보호사 교육과정을 경험한 학습자들과 교육자들의 내적 관점에서 교육과정에 대한 경험을 심층면접을 통해 이해하고자 하였다. 이를 위해 부산 경남 지역의 도립, 대학부설, 그리고 민간 요양보호사 교육기관에서 교육과정을 경험한 12명의 수료생들과 7명의 교강사들에 대한 심층면접 내용을 현상학적 연구방법을 바탕으로 분석하였다. 분석 결과 수료생들의 면접사례에서는 33개의 구성된 의미가 발견되었고, 이들 간의 순서와 관계를 분석하여 최종적으로 15개의 소범주와 다시 4가지 대범주가 발견되었으며, 교강사들의 면접사례에서는 25개의 구성된 의미, 11개의 소범주, 그리고 4개의 대범주가 발견되었다. 즉, 학습자들의 교육과정 경험을 통해서 '막연한 학습동기', '부실한 교육의 양과 질', '교육과정 수료 후의 아쉬움', '개선의 필요성을 절감', 그리고 교강사들의 교육과정 경험을 통해서 '제보다 젯밥에 더 관심을 가지고 온 다양한 수준의 학생들', '부실한 교육의 양과 질', '부실한 행정관리', '개선의 필요성을 절감'의 주제묶음으로 범주화되었다. 결론에서는 요양보호사 교육과정의 개선점을 제시하였다.

• Advances in nano research
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• 제7권2호
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• pp.125-134
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• 2019

The Origanum vulgare L.-mediated synthesis of Ag nanoparticles was successfully realized within the present study. Various concentrations of the $AgNO_3$ used as a silver precursor (1, 2.5, 5, 10 and 100 mM) were used. Very rapid formation of Ag nanoparticles was observed, as only minutes were necessary for the completion of the reaction. With the increasing concentration, red shift of the surface plasmon resonance peak was observed in the Vis spectra. According to photon cross-correlation spectroscopy results, the finest grain size distribution was obtained for the 2.5 mM sample. The transmission electron microscopy analysis of this sample has shown bimodal size distribution with larger crystallites with 100 nm size and smaller around 10 nm. The antibacterial activity was also the best for this sample so the positive correlation between good grain size distribution and antibacterial activity was found. The in-depth discussion of antibacterial activity with related works from the materials science point of view is provided, namely emphasizing the role of effective nanoparticles distribution within the plant extract or matrix. The antibacterial activity seems to be governed by both content of Ag nanoparticles and their effective distribution. This work contributes to still expanding environmentally acceptable field of green synthesis of silver nanoparticles.

• 실천공학교육논문지
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• 제10권2호
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• pp.95-102
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• 2018

대학 공학계열 신입생들 중 많은 학생들이 기초학력 저하로 전공과목 수강에 어려움을 겪고 있으며 이는 대학 수준에 관계 없이 전국의 모든 대학에서 나타나는 현실이기도 하다. 이러한 학습부진과 기초학력 저하를 해결하기 위하여 본 연구에서는 A대학에서 기계공학을 전공하려는 학생들 중 기초역학에 대한 학습능력이 부족한 학생들을 대상으로 기초학력강화 프로그램을 운영하고 사전 및 사후 검사 결과를 통하여 그 실효성을 확인하고 설문조사를 통하여 만족도를 조사하였다. 사전 사후 검사 결과 A집단에서는 평균 40.1% 향상되었으며 B집단에서는 평균 18.9% 향상된 것으로 조사되었다. 프로그램 이수 후 실시한 만족도 조사 및 심층 면담 결과 기초학력강화 프로그램은 전체 평균 90.6%(4.53/5.0)의 높은 만족도를 나타내어 전공 과목에 대한 흥미와 학업에 대한 자신감을 높이는데 기여 했을 뿐 아니라 교수와 참여 학생과의 긍정적인 관계 형성에 큰 도움을 준 유용한 프로그램임을 확인하였다.

• Journal of Ginseng Research
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• 제45권1호
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• pp.58-65
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• 2021

Background: Panax ginseng, as one of the most widely used herbal medicines worldwide, has been studied comprehensively in terms of the chemical components and pharmacology. The proteins from ginseng are also of great importance for both nutrition value and the mechanism of secondary metabolites. However, the proteomic studies are less reported in the absence of the genome information. With the completion of ginseng genome sequencing, the proteome profiling has become available for the functional study of ginseng protein components. Methods: We optimized the protein extraction process systematically by using SDS-PAGE and one-dimensional liquid chromatography mass spectrometry. The extracted proteins were then analyzed by two-dimensional chromatography separation and cutting-edge mass spectrometry technique. Results: A total of 2,732 and 3,608 proteins were identified from ginseng root and cauline leaf, respectively, which was the largest data set reported so far. Only around 50% protein overlapped between the cauline leaf and root tissue parts because of the function assignment for plant growing. Further gene ontology and KEGG pathway revealed the distinguish difference between ginseng root and leaf, which accounts for the photosynthesis and metabolic process. With in-deep analysis of functional proteins related to ginsenoside synthesis, we interestingly found the cytochrome P450 and UDP-glycosyltransferase expression extensively in cauline leaf but not in the root, indicating that the post glucoside synthesis of ginsenosides might be carried out when growing and then transported to the root at withering. Conclusion: The systematically proteome analysis of Panax ginseng will provide us comprehensive understanding of ginsenoside synthesis and guidance for artificial cultivation.