• 정보교육학회논문지
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• 제20권3호
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• pp.263-272
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• 2016

본 연구는 중학교 과학수업에서 플립러닝을 적용하고 과학성취, 과학흥미, 내재학습동기에 미치는 효과를 알아보고자 하였다. 이를 위해 서울의 남자 중학교 1학년 학생 90명을 실험집단과 통제집단으로 나누고, 플립러닝 수업(실험집단)과 강의식 수업(통제집단)을 진행하였으며, 수집된 자료는 공분산분석(ANCOVA)을 통해 평균의 차이를 분석하였다. 연구 결과, 플립러닝으로 적용한 집단의 과학성취, 과학흥미의 평균이 강의식 수업집단의 평균보다 통계적으로 유의하게 높았으나, 두 집단의 내재학습동기의 차이는 통계적으로 유의하지 않은 것으로 나타났다. 본 연구는 플립러닝의 효과성을 검증하고, 과학교육에서 플립러닝에 대한 이해를 확장시켰다는 점에서 연구의 의의를 찾을 수 있다.

• Safety and Health at Work
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• 제6권3호
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• pp.240-248
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• 2015

Background: Recovery from fatigue is important in maintaining night workers' health. This study compared the course of self-reported recovery after 2-week 12-hour schedules consisting of either night shifts or swing shifts (i.e., 7 night shifts followed by 7 day shifts) to such schedules consisting of only day work. Methods: Sixty-one male offshore employees-20 night workers, 16 swing shift workers, and 25 day workers-rated six questions on fatigue (sleep quality, feeling rested, physical and mental fatigue, and energy levels; scale 1-11) for 14 days after an offshore tour. After the two night-work schedules, differences on the $1^{st}$ day (main effects) and differences during the follow-up (interaction effects) were compared to day work with generalized estimating equations analysis. Results: After adjustment for confounders, significant main effects were found for sleep quality for night workers (1.41, 95% confidence interval 1.05-1.89) and swing shift workers (1.42, 95% confidence interval 1.03-1.94) when compared to day workers; their interaction terms were not statistically significant. For the remaining fatigue outcomes, no statistically significant main or interaction effects were found. Conclusion: After 2-week 12-hour night and swing shifts, only the course for sleep quality differed from that of day work. Sleep quality was poorer for night and swing shift workers on the $1^{st}$ day off and remained poorer for the 14-day follow-up. This showed that while working at night had no effect on feeling rested, tiredness, and energy levels, it had a relatively long-lasting effect on sleep quality.

• Tuberculosis and Respiratory Diseases
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• 제70권3호
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• pp.191-198
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• 2011

Ventilator-associated pneumonia (VAP) is the most frequent nosocomial infection in the intensive care unit (ICU), with an incidence ranging from 8% to 38%. Patients who acquire VAP have higher mortality rates and longer ICU and hospital stays. Because there are other potential causes of fever, leukocytosis, and pulmonary infiltrates, clinical diagnosis of VAP is overly sensitive. The only alternative approach to the clinical diagnosis of VAP is the Clinical Pulmonary Infection Score (CPIS). Employing quantitative cultures of respiratory secretions in the diagnosis of VAP leads to less antibiotic use and probably to lower mortality. With respect to microbiologic diagnosis, however, it is not clear that the use of invasive sampling using bronchoscopy is associated with better outcomes. Delayed administration of antibiotic therapy is associated with an increased mortality, and inadequate antibiotic therapy is also associated with higher mortality. Therefore, prompt initiation of adequate antibiotic therapy is a cornerstone of the treatment of VAP. The initial antibiotic therapy should be based on the most common organisms in each hospital and the most likely pathogens for that specific patient. When final cultures and susceptibilities are available, de-escalation to less broad spectrum antibiotics should be done. Since clinical improvement usually takes 2 to 3 days, clinical responses to the initial empirical therapy should be evaluated by day 3. A short course of antibiotic therapy appears to be equivalent to a traditional course of more than 14 days, except when treating non-fermenting gram-negative organisms. If patients receive initially adequate antibiotic therapy, efforts should be made to shorten the duration of therapy to as short as 7 days, provided that the etiologic pathogen is not a non-fermenting gram-negative organism.

• Archives of Plastic Surgery
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• 제43권5호
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• pp.466-469
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• 2016

External volume expansion of the recipient site by suction has been proposed as a way of improving fat graft survival. The objective of this study was to present an innovative and simple intraoperative external expansion system to enhance small-volume autologous fat grafting (40-80 mL) and to discuss its background and its mechanism of action. In this system, expansion is performed using a complete vacuum delivery system known as the Kiwi VAC-6000M with a PalmPump (Clinical Innovations). The recipient site is rapidly expanded intraoperatively 10 times for 30 seconds each with a negative pressure of up to 550 mm Hg before autologous fat injection. During this repetitive stimulation, the tissues become grossly expanded, developing macroscopic swelling that regresses slowly over the course of hours following the cessation of the stimulus. The system sets various mechanisms in motion, including scar release, mechanical stimulation, edema, ischemia, and inflammation, which provide an environment conducive for cell proliferation and angiogenesis. In order to maintain the graft construct in its expansive state, all patients are encouraged postoperatively to use the Kiwi three times daily for one minute per session over the course of three days. The handling of this system is simple for both the patients and the surgeon. Satisfactory clinical outcomes have been achieved without significant complications.

• Clinical and Experimental Pediatrics
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• 제58권5호
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• pp.178-182
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• 2015

Purpose: The purpose of this study was to determine the frequency of $CD4^+CD25^+FoxP3^+$ regulatory T cells (Treg) in the peripheral blood of patients with childhood chronic immune thrombocytopenic purpura (ITP) exhibiting thrombocytopenia and spontaneous remission. The findings of this study indicate the possibility of predicting spontaneous recovery and pathogenesis of childhood chronic ITP. Methods: Eleven children with chronic ITP (seven thrombocytopenic and four spontaneous remission cases; mean age, 8.8 years; range, 1.7-14.9 years) were enrolled in this study. Five healthy children and eight healthy adults were included as controls. The frequency of Treg was evaluated by flow cytometry in the peripheral blood. Results: In this study, four patients (36%) achieved spontaneous remission within 2.8 years (mean year; range, 1.0-4.4 years). The frequency of Treg was significantly lower in patients with persisting thrombocytopenia ($0.13%{\pm}0.09%$, P<0.05), than that in the patients with spontaneous remission ($0.30%{\pm}0.02%$), healthy adults controls ($0.55%{\pm}0.44%$), and healthy children controls ($0.46%{\pm}0.26%$). A significantly positive correlation was found between the frequency of Treg and the platelet count in children. Conclusion: These data suggest that a lower frequency of Treg contributes to the breakdown of self-tolerance, and may form the basis for future development of specific immunomodulatory therapies. Furthermore, Treg frequency has prognostic implication toward the natural course and long-term outcomes of childhood chronic ITP.

• Clinical and Experimental Pediatrics
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• 제60권6호
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• pp.175-180
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• 2017

Purpose: Plasma level of B-type natriuretic peptide (BNP), an emerging, sensitive, and specific biomarker of hemodynamically significant patent ductus arteriosus (PDA), rapidly decreases in infants receiving cyclooxygenase inhibitors for ductal closure. We investigated the usefulness of serial BNP measurement as a guide for individual identification of early constrictive responses to ibuprofen in preterm infants with symptomatic PDA (sPDA). Methods: Before March 2010, the standard course of pharmacological treatment was initiated with indomethacin (or ibuprofen) and routinely followed by 2 additional doses at intervals of 24 hours. After April 2010, individualized pharmacological treatment was used, starting with the first dose of ibuprofen and withholding additional ibuprofen doses if the BNP concentration was <600 pg/mL and clinical symptoms of PDA improved. Results: The BNP-guided group received significantly fewer doses of ibuprofen than the standard group did during the first course of treatment and the entire study period. The need for further doses of cyclooxygenase inhibitors and for surgical ligation was not significantly different between the 2 groups. No significant differences were seen in clinical outcomes and/or complications related to sPDA and/or pharmacological treatment. Conclusion: Individualized BNP-guided pharmacological treatment may be used clinically to avoid unnecessary doses of cyclooxygenase inhibitors without increasing the ductal closure failure and the short-term morbidity related to sPDA.

• 한국콘텐츠학회논문지
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• 제15권3호
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• pp.448-457
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• 2015

이 연구는 학습자에게 창의적인 사고 경험을 활성화하여 문제를 해결하도록 유도함으로서 디자인 교육의 효율성을 높이는 창의적디자인도출 교수학습법을 제시하고, 이를 다양한 교육과정에 적용해 봄으로써 학습자의 창의력 신장에 긍정적 영향을 미치게 하는데 그 목적이 있다. 이를 위해 실행연구 방법을 활용하여, 실제로 게임공학과의 게임캐릭터디자인, 뷰티케어학과의 조형예술, 시각디자인학과의 디지털그래픽스 교육과정에 적용하여 교과목 특성에 맞도록 교수자는 수업주제, 교수학습내용, 창의적 발상 도구를 정의하고 수업을 진행하는 방식을 취하였다. 그 결과, 창의적인 디자인 도출에 효과적임을 알 수 있었으며, 수업의 참여도와 학습자의 흥미를 높이는데 도움을 줄 수 있다. 하지만, 창의적 발상 도구를 적용한 결과 학습자의 역량에 따라 창의적 학습결과물에 다소 차이가 나타났다.

• 한국전자통신학회논문지
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• 제12권2호
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• pp.375-384
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• 2017

본 논문은 간호학과의 컴퓨터 활용 교과목의 내실 있는 수업을 위하여, 관련 자격시험의 검정요강과 국내 대학에서 강의중인 교재와 강의계획서의 내용들을 분석한 후 효과적인 수업이 이루어질 수 있도록 브랜디드 러닝을 적용하여 교과과정을 설계하면서, 컴퓨터 활용 관련 국내외 자격시험의 출제경향과 실무활용 사례를 분석하여 자격증 취득 및 실무능력 제고가 가능한 새로운 교과과정을 제안하였다. 본 논문에서 제안하는 컴퓨터 활용 교과목의 교과과정은 강의와 실습의 두 가지 트랙을 면대면 수업과 이 러닝 강좌를 혼합한 브랜디드 러닝을 기반으로 주차별로 핵심영역, 교육목표, 강의 등을 포함하고 있으므로, 교수자에게는 좋은 교수방안이 될 것이며 학생에게는 컴퓨터 활용 분야의 자격 취득과 취업을 위한 동기부여로 우수한 학습 결과가 기대된다.

• Tuberculosis and Respiratory Diseases
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• 제77권3호
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• pp.141-144
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• 2014

Invasive pulmonary aspergillosis (IPA) is rarely reported in patients who have normal immune function. Recently, IPA risk was reported in nonimmunocompromised hosts, such as patients with chronic obstructive pulmonary disease and critically ill patients in intensive care units. Moreover, influenza infection is also believed to be associated with IPA among immunocompetent patients. However, most reports on IPA with influenza A infection, including pandemic influenza H1N1, and IPA associated with influenza B infection were scarcely reported. Here, we report probable IPA with a fatal clinical course in an immunocompetent patient with influenza B infection. We demonstrate IPA as a possible complication in immunocompetent patients with influenza B infection. Early clinical suspicion of IPA and timely antifungal therapy are required for better outcomes in such cases.

• 한국의류산업학회지
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• 제23권3호
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• pp.337-346
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• 2021

In the fourth industrial revolution, fashion students are expected to work with various technologies to show creativity. This study aimed to conduct project-based learning(PBL) in collaboration with industry experts to design and operate artificial intelligence(AI) in the practice subject of fashion curation through the industrial academic teaching method. We first looked at teaching methods and strategies incorporating PBL in various academic fields. Next, we analyzed fashion projects and fashion curation services applying AI. Then through the question-and-answer method and by consulting with industry experts, we developed a curriculum for AI fashion curation, applying PBL(fashion market and trend analysis; new styles and time, place, and occasion planning; AI machine learning data set production; curation model development; and evaluation) suitable for the university's educational environment, information technology company conditions, and fashion students. As part of a close cooperation system with the industry, we conducted a 15-week Fashion Project II (Capstone Design) course and evaluated the outcomes and student satisfaction with the course. Students were able to develop new style, and time, place, and occasion categories and to utilize strategies for AI fashion curation services reflecting the unique needs of Millennials and Generation Z. Students showed high satisfaction with the curriculum. Further, it was confirmed that the study successfully applied PBL in class using AI technology in fashion education.