• 컴퓨터교육학회논문지
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• 제17권1호
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• pp.65-73
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• 2014

본 연구는 시간관리, 유용성, 흥미가 모바일 과학학습 성과를 예측하는지 검증하고자 하였다. 이를 위해 A여자 고등학교 2학년 학생 144명을 대상으로 약 5주 동안 모바일 기기를 활용하여 과학수업을 진행하였다. 수업 후, 시간관리, 유용성, 흥미, 만족도, 성취도, 학습지속의향에 관한 설문 결과를 수집하여, 상관분석 및 다중회귀분석으로 데이터를 분석하였다. 연구결과, 시간관리, 유용성, 흥미가 학습성과 중 만족도, 학습지속의향을 예측하였고, 시간관리, 유용성은 인지된 성취도를 유의미하게 예측하였다. 이는 모바일 과학수업에서 학습성과를 높이기 위해서는 시간관리전략에 대한 교육프로그램 제공과, 모바일학습에 대한 긍정적인 태도를 함양할 수 있도록 하는 교육이 마련되어야 함을 시사한다.

• 재활치료과학
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• 제11권4호
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• pp.23-39
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• 2022

목적 : 본 연구는 뇌졸중 환자의 기능적 결과를 예측하기 위한 인구통계학적 및 임상학적 특징과 머신러닝의 사용을 체계적으로 분석하고 요약하기 위해 수행되었다. 연구방법 : PubMed, CINAHL과 Web of Science를 사용하여 2010년부터 2021년 사이에 게재된 연구를 검색하였다. 주요 검색어는 "machine learning OR data mining AND stroke AND function OR prediction OR/AND rehabilitation"을 사용하였다. 뇌 이미지 처리 기법만을 분석한 연구, 딥러닝만 적용한 연구와 전체 본문을 열람할 수 없는 연구는 제외되었다. 결과 : 검색한 결과, 총 9편의 국내외 논문을 선정했다. 선정된 논문에서 가장 많이 사용된 머신러닝 알고리즘은 서포트 벡터 머신(support vector machine, 19.05%)과 랜덤포레스트(random forest, 19.05%)였다. 9개 중 7개의 연구에서 뇌졸중 환자의 기능을 예측하기 위해 중요하다고 추출된 변수를 결과로 제시했다. 그 결과, 5개(55.56%)의 연구에서 뇌졸중 환자의 기능을 예측하기 위해 환자의 임상적 특성이 아닌 modified ranking scale (mRS) 및 functional independence measure (FIM)과 같은 초기 또는 퇴원 평가 점수가 중요하다고 도출되었다. 결론 : 이 연구는 mRS 및 FIM과 같은 뇌졸중 환자의 초기 또는 퇴원 평가 점수가 임상적 특성보다 기능적 결과에 더 많은 영향을 미칠 수 있음을 나타냈다. 따라서, 뇌졸중 환자의 기능적 결과를 향상시키기 위한 최적의 중재를 개발하고 적용하기 위해서는 뇌졸중 환자의 초기 및 퇴원 시 기능적 결과를 평가하고 검토하는 것이 필요하다.

• 정보교육학회논문지
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• 제17권2호
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• pp.115-123
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• 2013

본 연구는 모바일러닝의 효과성을 높이기 위해 고려해야 할 지침을 얻고자, 모바일러닝 환경에서 학습성과를 예측하는 요인으로 모바일러닝 효능감, 편재성, 유용성, 용이성을 선정하고 이들의 예측력을 규명하였다. 이를 위해 2012학년도 9월에서 10월초까지 경남 지역에 소재한 A여자 고등학교 2학년 학생 144명을 대상으로 약 5주동안 모바일기기를 활용하여 모바일러닝을 진행하였다. 수업 종료 후 학습자의 설문을 수거하여 상관분석 및 회귀분석으로 데이터를 분석하였다. 연구결과, 모바일러닝 효능감, 유용성은 만족도에 유의미한 영향을 미치고, 유용성, 편재성은 인지된 성취도에 유의미한 영향을 미치는 것으로 확인되었다. 즉, 모바일러닝 활용 측면의 편재성, 용이성 등의 기기자체의 특성 보다는 모바일러닝에 대해 본인이 느끼는 긍정적 태도나, 유용하다고 느끼는 정도가 모바일러닝의 만족도를 예측하는 요인으로 규명된 것이다. 반면 편재성이 인지된 성취도를 유의미하게 예측하는 것으로 나타났는데, 이는 모바일 특성상 시간과 장소에 관계없이 필요한 정보를 이용할 수 있고 자신에게 적합한 서비스나 정보를 제공받을 수 있으므로, 학습자가 모바일학습 환경에서 더욱 효율적인 학습이 가능했기 때문이라고 생각된다. 유용성이 만족도와 인지된 성취도 모두를 유의하게 예측한 것은, 학습자에게 유용한 모바일러닝을 제공하고 또한 모바일러닝에 대해 긍정적인 태도를 함양할 수 있도록 하는 전략이 필요하다는 것을 함의한다.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제27권1호
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• pp.111-127
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• 2024

There is an increasing concern in the United States regarding the workforce's ability to maintain a competitive position in the global economy. This has led to an increased interest in effective science, technology, engineering, and mathematics (STEM) education. The purpose of this study was to investigate the effect of STEM project-based learning (PBL) on students' self-regulation and motivation to learn. Secondary students (n = 60) participated in a STEM summer camp in which STEM PBL was utilized. Results showed that students increased their self-regulation skills (t = 2.83, df = 59, p = .004) and motivation (t = 2.25, df = 59, p =.004), with Cohen's d effect sizes of 0.395 and 0.404, respectively. Student-centered learning and peer collaboration while solving real-world problems were likely the greatest contributing factors to the outcomes. Educators should utilize the results to provide opportunities for students to experience STEM PBL.

• Safety and Health at Work
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• 제13권4호
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• pp.379-386
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• 2022

Emergency medical services (EMS) personnel are at high risk for adverse mental health outcomes during disease outbreaks. To support the development of evidence-informed mitigation strategies, we conducted a scoping review to identify the extent of research pertaining to EMS personnel's mental health during disease outbreaks and summarized key factors associated with mental health outcomes. We systematically searched three databases for articles containing keywords within three concepts: EMS personnel, disease outbreaks, and mental health. We screened and retained original peer-reviewed articles that discussed, in English, EMS personnel's mental health during disease outbreaks. Where inferential statistics were reported, the associations between individual and work-related factors and mental health outcomes were synthesized. Twenty-five articles were eligible for data extraction. Our findings suggest that many of the contributing factors for adverse mental health outcomes are related to inadequacies in fulfilling EMS personnel's basic safety and informational needs. In preparation for future disease outbreaks, resources should be prioritized toward ensuring adequate provisions of personal protective equipment and infection prevention and control training. This scoping review serves as a launching pad for further research and intervention development.

• Journal of Gastric Cancer
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• 제18권2호
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• pp.172-181
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• 2018

Purpose: This study aimed to evaluate the surgical outcomes and investigate the feasibility of reduced-port laparoscopic gastrectomy using learning curve analysis in a small-volume center. Materials and Methods: We reviewed 269 patients who underwent laparoscopic distal gastrectomy (LDG) for gastric carcinoma between 2012 and 2017. Among them, 159 patients underwent reduced-port laparoscopic gastrectomy. The cumulative sum technique was used for quantitative assessment of the learning curve. Results: There were no statistically significant differences in the baseline characteristics of patients who underwent conventional and reduced-port LDG, and the operative time did not significantly differ between the groups. However, the amount of intraoperative bleeding was significantly lower in the reduced-port laparoscopic gastrectomy group (56.3 vs. 48.2 mL; P<0.001). There were no significant differences between the groups in terms of the first flatus time or length of hospital stay. Neither the incidence nor the severity of the complications significantly differed between the groups. The slope of the cumulative sum curve indicates the trend of learning performance. After 33 operations, the slope gently stabilized, which was regarded as the breakpoint of the learning curve. Conclusions: The surgical outcomes of reduced-port laparoscopic gastrectomy were comparable to those of conventional laparoscopic gastrectomy, suggesting that transition from conventional to reduced-port laparoscopic gastrectomy is feasible and safe, with a relatively short learning curve, in a small-volume center.

• 전자통신동향분석
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• 제33권3호
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• pp.89-99
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• 2018

Human activity recognition (HAR) is a technology that aims to offer an automatic recognition of what a person is doing with respect to their body motion and gestures. HAR is essential in many applications such as human-computer interaction, health care, rehabilitation engineering, video surveillance, and artificial intelligence. Smartphones are becoming the most popular platform for activity recognition owing to their convenience, portability, and ease of use. The noticeable change in smartphone-based activity recognition is the adoption of a deep learning algorithm leading to successful learning outcomes. In this article, we analyze the technology trend of activity recognition using smartphone sensors, challenging issues for future development, and a strategy change in terms of the generation of a activity recognition dataset.

• 공학교육연구
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• 제16권3호
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• pp.3-9
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• 2013

It is very difficult for students to understand "Computer System Architecture" written by M. Morris Mano only through theoretical education. This study has developed DigCom as a computer architecture practice kit to make it easier for students to understand computer operations. The practice kit operates in the same manner as the "simple computer" described in Computer System Architecture. The purpose of this study is to examine whether using DigCom is effective in improving learning outcomes. For the purpose, t-test and two-way ANOVA were used to determine if there is any difference in learning outcomes between the experimental group of students who used DigCom and the control group who took the course in a traditional setting without using DigCom. The main conclusions of the study are as follows: Students understand computer operations better when DigCom is used in class.

• Journal of Gastric Cancer
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• 제15권3호
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• pp.151-158
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• 2015

Purpose: Obesity is associated with morbidity following gastric cancer surgery, but whether obesity influences morbidity after laparoscopic gastrectomy (LG) remains controversial. The present study evaluated whether body mass index (BMI) and visceral fat area (VFA) predict postoperative complications. Materials and Methods: A total of 217 consecutive patients who had undergone LG for gastric cancer between May 2003 and December 2005 were included in the present study. We divided the patients into two groups ('before learning curve' and 'after learning curve') based on the learning curve effect of the surgeon. Each of these groups was sub-classified according to BMI (<$25kg/m^2$ and ${\geq}25kg/m^2$) and VFA (<$100cm^2$ and ${\geq}100cm^2$). Surgical outcomes, including operative time, quantity of blood loss, and postoperative complications, were compared between BMI and VFA subgroups. Results: The mean operative time, length of hospital stay, and complication rate were significantly higher in the before learning curve group than in the after learning curve group. In the subgroup analysis, complication rate and length of hospital stay did not differ according to BMI or VFA; however, for the before learning curve group, mean operative time and blood loss were significantly higher in the high VFA subgroup than in the low VFA subgroup (P=0.047 and P=0.028, respectively). Conclusions: VFA may be a better predictive marker than BMI for selecting candidates for LG, which may help to get a better surgical outcome for inexperienced surgeons.

• 대한가정학회지
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• 제50권8호
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• pp.79-95
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• 2012

The purpose of this study is to seek improvement in clothing life education through a development and application of the clothing life education program for middle schools based on the education and experience in arts & culture. On the basis of art & culture education as well as, Dewey's experience, the clothing life area education program was designed and developed for the 2nd year students in the middle school. This program was applied to 350 students of 9 2nd year classes in M middle school during the 17 periods of clothing life area classes, beginning from May 23rd, 2011 and lasting to September 30th, 2011. The leaner-evaluation was performed in terms of the level of learning interest and academic achievement. To measure the level of academic achievement, a mind-map evaluation was performed and a learning effect survey, which evaluates the level of achievement of learning objectives, was carried out. For the purpose of class observation, classes were filmed and analyzed. Characteristics of a class were recorded on a teacher's diary and was used to support the qualitative evaluation. According to the results, the education program is analyzed as being helpful and useful in student understanding of fiber, textile and, clothes, which are materials and outcomes of culture and art; moreover, they have a historical, cultural and artistic value in themselves. It is also analyzed as being helpful for the development of student aesthetic sensibility and emotion, for the construction of meaningful experience through a learning process, for the improvement of learning interest and the level of academic achievement, and for the positive recognition of the learning effect.