Students’ Perception of Problem-based Flipped Learning in Higher Education

허선영(Sun Young Huh),조영환(Young Hoan Cho) 학습자중심교과교육학회 2020 학습자중심교과교육연구 Vol.20 No.4

플립러닝은 고등교육에서 기존 강의식 수업이 가진 한계를 극복하고 핵심 역량을 증진시킬 수 있는 학습자 중심 수업으로 주목을 받고 있다. 그러나 플립러닝은 학습자의 수동적인 온라인 학습 참여, 온라인과 면대면 수업의 연계성 부족, 과도한 학습부담이라는 제한점을 가진다. 이러한 제한점을 극복하기 위해서 본 연구에서는 문제 중심 플립러닝을 이러닝(e-learning) 관련 대학원 강의에 적용하고 학습과정 및 결과에 대한 학습자의 인식을 탐구하였다. 총 11명을 대상으로 이러닝 설계에 관한 문제 중심 플립러닝을 3주간 실시하고 설문조사와 심층면담을 통해 학습자의 인식을 조사하였다. 문제 중심 플립러닝은 학습자의 동기, 인지적 참여, 협력학습에 긍정적인 영향을 미쳤으며, 학습내용을 깊이 이해하고 실제적인 문제해결에 도움이 되는 것으로 나타났다. 그렇지만, 자기조절학습 측면에서는 문제 중심 플립러닝의 효과와 함께 개선점이 발견되었으며, 자기조절학습 능력이 부족한 학습자를 위해 적응적 학습지원을 강화할 필요가 있다. 본 연구는 문제 중심 학습과 플립러닝을 통합함으로써 기존의 플립러닝이 가진 제한점을 극복하고 유의미 학습을 증진시킬 수 있다는 것을 시사한다. Flipped learning is the student-centered learning that contributes to overcoming the limitations of traditional instruction and improving students’ key competencies in higher education. Despite the potential of flipped learning, there are a few challenges, such as passive online learning, lack of integration between online and face-to-face learning, and high workload of students. To address these challenges, this study applied problem-based flipped learning (PFL) in an e-learning design course and investigated graduate students’ perception of the learning process and outcomes in PFL. In this study, a total of 11 graduate students participated in PFL of e-learning design for three weeks, and their perceptions were investigated through surveys and in-depth interviews. PFL positively influenced students’ motivation, cognitive engagement, and collaborative learning and contributed to a deeper understanding and authentic problem-solving skills. Nevertheless, this study found that PFL had both strengths and weaknesses regarding self-regulated learning. Adaptive learning support should be provided to students who have a lower self-regulated learning competence. This study implies that the effectiveness of flipped learning for meaningful learning can be enhanced when it is integrated with problem-based learning.

혈관종으로 오인하였던 지방모세포종

허선영 ( Sun Young Huh ),김병윤 ( Byung Yoon Kim ),김규한 ( Kyu Han Kim ) 대한피부과학회 2010 대한피부과학회지 Vol.48 No.8

Lipoblastomas are rare benign tumors of infancy originating from embryonic fat cells that continue to proliferate in the postnatal period. Lipoblastomas usually affect children younger than 3 years of age. Lipoblastomas may mimic other infantile tumors, including hemangiomas, lymphangiomas, lipomas, and liposarcomas. A correct diagnosis is necessary to ensure appropriate treatment. We witnessed a case of a 5-month-old boy who presented with a very firm, round, well-circumscribed mass on the posterior part of the right lower leg. On magnetic resonance imaging, a hemangioma was suspected. However, histopathological examination revealed a lobulated adipose tissue composed of a mixture of immature multivacuolated lipoblasts and mature adipocytes without nuclear atypia. Based on the clinical and histopathological findings, the diagnosis of benign lipoblastoma was made. (Korean J Dermatol 2010;48(8):689~692)

인공지능 기반 진로/진학 서비스 프로토타입 개발 연구

이가영(Ga-Young Lee),지현경(Hyun-Kyung Chee),김명선(Myung-Sun Kim),금선영(Sun-Young Keum),최탁(Tak Choi),김제천(Je-Cheon Kim),허선영(Sun-Young Huh) 한국디지털콘텐츠학회 2024 한국디지털콘텐츠학회논문지 Vol.25 No.3

코로나19 팬데믹 시대 원격수업에 나타난 교사 행위자성의 유형과 영향 요인

금선영 ( Sunyoung Keum ),조영환 ( Young Hoan Cho ),허선영 ( Sun Young Huh ),김명신 ( Myungshin Kim ) 한국교육공학회 2021 교육공학연구 Vol.37 No.2

코로나19 팬데믹 상황에서 원격수업이 초중등학교에 전면적으로 도입되면서 교육 격차에 대한 우려가 크게 증가하고 있다. 원격수업의 질을 향상시키고 교육 격차를 줄이는 데 있어서 교사의 능동적인 참여가 중요하다. 이를 위해 교사는 스스로를 교육부나 학교장의 지시를 받는 수동적인 존재가 아니라 원격수업이라는 환경 변화에 전략적으로 대응하는 능동적인 주체로 인식할 필요가 있다. 이처럼 교육현장의 문제를 해결하고 교육의 질을 개선하기 위해 지속적으로 노력하는 교사의 능동적 실천을 교사 행위자성이라고 한다. 코로나19 팬데믹 시대 원격수업의 다양성을 이해하고 개선 방안을 탐색하기 위해서는 원격수업에 영향을 미치는 교사 행위자성을 깊이 있게 탐구할 필요가 있다. 본 연구는 원격수업에 대한 교사 행위자성의 유형과 이에 영향을 미치는 개인과 교육 환경 요인을 살펴보고자 한다. 이를 위해 18명의 중학교 교사를 심층 면담하였다. 연구 결과, 원격수업에 대한 교사 행위자성은 변화추구형, 안정추구형, 책임회피형의 세 가지 유형으로 나타났다. 그리고 생태계적 관점에 기반하여 면담 내용을 분석한 결과, 교사 행위자성에 영향을 미치는 개인 요인으로 교사의 신념과 전문성이 있으며 교육 환경 요인으로 동료 교사 및 학교장, 학교 문화, ICT 환경, 학부모가 있다는 것을 발견하였다. 이 연구는 교사 행위자성이 원격수업 개선에 있어서 중요한 역할을 하며, 교사 행위자성을 강화시키기 위한 지속적이고 체계적인 노력이 필요하다는 것을 시사한다. Concern over educational inequality increases in online classes, which are universally adopted during the COVID-19 pandemic. The active participation of teachers is necessary to improve the quality of online classes and to reduce educational inequality. Teachers should play an active role to strategically address a variety of issues in online classes, not act as passive followers of the Ministry of Education or school administrators. To understand the diversity of online classes in the COVID-19 pandemic, we should investigate teacher agency, and specifically practices that actively address educational problems and improve the quality of education. This study aims to explore types of teacher agency in online classes and the individual and environmental factors influencing that agency. For these purposes, 18 secondary school teachers participated in in-depth interviews about teacher agency. Three types of teacher agency in online classes were identified: change-seeking, stability-seeking, and responsibility-avoiding. Based on the ecological approach, this study found that teacher agency was influenced by individual factors including a teacher's beliefs and expertise as well as factors in the educational environment such as colleagues and principals, school culture, ICT tools, and parents. The findings of this study imply that teacher agency plays a crucial role in improving online classes. Systematic efforts are thus necessary to improve and sustain teacher agency.

고등교육 분야 온라인 학습 연구의 동향

조영환 ( Young Hoan Cho ),허선영 ( Sun Young Huh ),최효선 ( Hyo Seon Choi ),김정연 ( Jung Yeon Kim ),이현경 ( Hyun Kyung Lee ) 한국교육공학회 2015 교육공학연구 Vol.31 No.4

하드 디스크 드라이브에서 Smooth 디스크와 LZT 디스크가 입자 발생에 미치는 영향

이대영 ( Dae Young Lee ),허선영 ( Sun Young Huh ),강필선 ( Pil Sun Kang ),황정호 ( Jung Ho Hwang ),조긍연 ( Keung Young Cho ),강태식 ( Tae Sik Kang ) 정보저장시스템학회 2005 추계학술대회논문집 Vol.2005 No.-

The head to disk spacing must be decreased to increase recording densities in hard disk drives. Recently, to decrease the head to disk spacing, smooth disk having no bumps onto the lading zone has used. In this research, we compared the number of particles generated in HDD with smooth and textured disks. We used a sampling method using a particle sampler and a epe (condensation particle counter) to detect particles in HDD. First, we sampled and counted particles generated with disk rotational speed and various rest times when the smooth disk and textured disks were used, then analyzed the sampled particles by SEM (scanning electron microscopy) and AES (auger electron spectroscopy). In results of measuring particles, more particles in case of LZT disk drive generated than that of the smooth disk drive in all test modes. The number of particles generated in the smooth disk was very low. The particle generation increased as the rest time increased (smooth/LZT disks) and more particles in case of LZT disk drive generated than that of the smooth disk drive. In results of analyzing particle components, AI, Ti, Si components were detected and we could not found differences between components in case of smooth/LZT disk drive.

하드 디스크 드라이브에서 Smooth 디스크와 LZT 디스크가 입자 발생에 미치는 영향

이대영 ( Dae Young Lee ),허선영 ( Sun Young Huh ),강필선 ( Pil Sun Kang ),황정호 ( Jung Ho Hwang ),조긍연 ( Keung Youn Cho ),강태식 ( Tae Sik Kang ) 정보저장시스템학회 2006 정보저장시스템학회논문집 Vol.2 No.2

인공지능 챗봇을 활용한 웹 기반 코딩학습 지원도구 프로토타입 개발

김민지 ( Minji Kim ),허선영 ( Sun Young Huh ) 한국교육정보미디어학회(구 한국교육정보방송학회) 2021 교육정보미디어연구 Vol.27 No.1

본 연구는 코딩학습의 높은 학습 탈락률을 방지하고 효과적으로 학습이 이루어질 수 있도록 인공지능 챗봇을 활용한 웹 기반 코딩학습 지원도구 프로토타입을 개발하고 도구의 실제 활용 가능성에 대해 탐구하는 데 목적이 있다. 이를 위해 설계·개발연구방법을 적용하여 문헌 및 사례 분석을 통해 설계 원리를 도출하였고, 이를 반영하여 1차 프로토타입을 개발하였다. 이후, 초보 코딩학습자 6명을 대상으로 1차 프로토타입에 대한 사용성 평가를 실시하였다. 사용성 평가는 설문조사와 면담으로 이루어졌다. 설문조사 분석 결과, 학습자는 프로토타입의 유용성, 용이성, 태도에 대하여 긍정적으로 인식한 것으로 나타났다. 면담을 통해 분석한 프로토타입의 장점으로는 인공지능 챗봇의 단계적 피드백, 신속한 문제해결, 동료 학습자와의 의사소통 지원이 있었다. 개선점으로는 함수 설명 기능 추가, 챗봇의 질문 메뉴 및 음성 지원 기능 추가, 챗봇 에이전트 생성이 도출되었다. 이상의 개선점을 반영하여 최종 프로토타입을 다음과 같이 개발하였다. 최종 프로토타입에는 코딩 창, 인공지능 챗봇, 그룹대화방, 함수 표기 기능을 탑재하였다. 코딩 창의 메인 화면에서는 파일, 편집, 보기, 실행, 디버깅, 도움말의 탭 기능을 지원하고 다른 부가 지원 기능들은 아이콘으로 설계하였다. 이상의 연구 결과를 바탕으로 코딩학습의 중도 탈락률을 방지하고 효과적인 학습을 지원하기 위해서는 첫째, 시간적 및 공간적 제약 없이 지원을 요청하고 도움을 받을 수 있는 학습 지원도구 필요하며, 둘째, 단계적 피드백을 제공하여 컴퓨팅 사고력을 촉진할 필요가 있으며, 셋째, 개인 맞춤형 피드백 제공해야 한다는 점을 논의 하였다. As coding education is getting more attention in and outside of school, the number of learners starting coding education is steadily increasing. However, beginners tend to struggle to resolve error messages or give up on solving the problems, resulting in learning failure. To address the issue, this study aims to develop a web-based learning support tool using AI(Artificial Intelligence) chatbot in coding education, carry out usability tests, and explore the potential effectiveness of the developed tool. The study applied the design and development method. The early prototype was developed based on the design principles derived from the literature review and case analysis. Then, six beginners participated in usability tests on the early prototype. The participants’ perceptions of the usability, ease of use, and attitude on the prototype were positive. In specific, AI chatbots’ step-by-step feedback, prompt support for problem-solving, and communication function with co-learners were found to be the advantages of the prototype. On the other hand, the needs for improvement on code description and chatbot added menu, voice recognition, and designed friendly were reported. The final prototype reflecting the improvements consisted of seven elements: ‘file’, ‘edit’, ‘view’, ‘execution’, ‘debugging’, ‘help’, and ‘support functions’. The support functions included ‘chatbot’, ‘chat room’, and ‘function description’. Based on these results, we discussed that a learning support tool that students can ask for help and receive feedback without temporal and spatial constraints is needed in order to prevent dropout students and support coding education effectively. Moreover, it is necessary to promote computational thinking by providing personalized and step-by-step feedback.

Tranexamic Acid를 주성분으로 하는 경구약제의 기미치료 효과연구

신정원 ( Jung Won Shin ),허선영 ( Sun Young Huh ),정정복 ( Jeong Bok Jeong ),박경찬 ( Kyoung Chan Park ) 대한피부과학회 2011 대한피부과학회지 Vol.49 No.7

Background: Melasma causes considerable cosmetic disfigurement and none of the existing treatment modalities are satisfactory. Recently tranexamic acid has been reported to reduce hyperpigmentation in patients with melasma. Objective: The purpose of the study was to evaluate the efficacy and safety of tranexamic acid containing oral medication for the treatment of melasma. Methods: Forty-five female volunteers who had been diagnosed with melasma were enrolled in the present study. Patients were instructed to take medication for 8 weeks. The melanin index (MI) and erythema index (EI) were measured at baseline, and at 4 and 8 weeks. The melasma area and severity index (MASI) was scored at 0, 4, and 8 weeks. Self-satisfaction and safety evaluations were also performed at each visit. Results: The mean MI measured on the lesional skin was decreased at 4 and 8 weeks compared with baseline (p<0.01 for both). The mean EI measured on the lesional skin and the MASI also showed a significant decrease from baseline to 8 weeks (p<0.001 for EI and p=0.020 for MASI). Based on self-assessment, 39.5% of the patients were very satisfied, 44.2% were satisfied, and 11.6% felt moderate improvement after 8 weeks of medication; only 2 patients (4.7%) were dissatisfied. Thus, >80% of patients were satisfied with the medication. Adverse effects were minimal and two patients dropped out of the study due to drug-related urticaria and unexpected pregnancy. Conclusion: Tranexamic acid-containing oral medication is an effective and safe therapeutic modality for the treatment of melasma.

사마귀 양상으로 나타난 손발톱밑 뼈연골종 1예

김병윤 ( Byung Yoon Kim ),허선영 ( Sun Young Huh ),조광현 ( Kwang Hyun Cho ) 大韓皮膚科學會 2010 大韓皮膚科學會誌 Vol.48 No.2

Subungual osteochonroma is a benign bone tumor of the fingers and toes. Clinically it may present as a slow-growing firm mass causing deformity of the overlying nail. It must be differentiated from other subungual masses such as verruca vulgaris, subungual exostosis and enchondroma. Here we present a case of subungual osteochondroma of the right 1st toe presenting as a verrucous skin lesion in an 11-year-old male. Radiographic examination showed an outgrowth of the bony tissue on the dorsum of the distal phalangeal bone beneath the nail. Histopathologic examination revealed a characteristic trabecular bone formation covered with a hyaline cartilage cap. The lesion was successfully treated by total excision and curettage of the underlying bony surface. (Korean J Dermatol 2010;48(2):152∼154)