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장혜원(Hyewon Jang) 학습자중심교과교육학회 2018 학습자중심교과교육연구 Vol.18 No.23
교사는 학습 촉진자로서 학생과 상호 존중의 수평적인 관계를 형성하고 학습자 중심 교육을 실천할 수 있어야 한다. 이 연구는 본질적이고 다양한 각도에서 예비 교사의 ‘배움이 있는 수업’의 경험과 의미를 모색하고자 반 구조화된 면담을 통해 자료 를 수집하고 현상학에 기반을 두어 중심의미와 신체성, 공간성, 시간성, 관계성을 분석하였다. 분석 결과 ‘배움이 있는 수업’의 중심의미는 학문적 전문가와 스스럼없는 만남, 동료·학습자료·교사와의 진정한 대화, 몰입과 학문적 즐거움이었다. 한편, ‘배움이 없는 수업’의 중심 의미는 위장된 독백, 피드백이 없는 주입식 수업, 악순환 속에서의 좌절이었다. ‘배움’의 본질은 교사와 학생의 참된 관계에 있었고, 교사와 학생의 관계는 학업성취 뿐만 아니라 삶과 진로에도 영향을 주었다. 이 연구는 학교 교육은 지식 습득을 넘어서 배움을 지향해야 하며, 교원 교육은 좋은 수업에 필요한 기술을 지도하기 전에 교사와 학생의 실존적 관계 정립을 논의해야 함을 시사한다. Teachers should be able to form a personal relationship between students and mutual respect and practice learner-centered education as a learning facilitator. However, it has been argued that the pre-service teachers’ view of the good instruction can be distorted by the hierarchical culture of the Korean school. This study analyzes the pre-service teachers’ perceptions of the class with learning through semi-structured interviews and based on phenomenology. As a result, ‘learning class’ was the immersion experience which actively discusses the contents with peers and teachers based on the thoughtful and interactive relationship between the teacher and the student. On the other hand, ‘lesson without learning’ was the one without feedback based on the neglected relationship between the teacher and the student which makes frustration and anger. This study suggests that the essence of the learning is the mutually respectful existential relationship of the student and the teacher and educational support should be provided to establish the relationship between teachers and students in order to facilitate learning in school.
도심항공교통(UAM) 비행경로 구축을 위한 횡 방향 설계기준에 관한 연구
장혜원(Hyewon Jang),최상일(Sangil Choi),김휘양(Huiyang Kim) 한국항공우주학회 2024 韓國航空宇宙學會誌 Vol.52 No.7
인구 과밀화에 따른 교통 혼잡 및 환경 오염의 문제점을 해결하기 위한 대안으로 도심항공교통(UAM)은 새로운 교통수단으로 등장하였다. UAM의 상용화를 위해서는 여러 기술과 제도가 선행되어야 하며 안전한 비행을 위한 비행경로(Corridor)의 설계기준 수립이 요구된다. 본 연구는 UAM 비행경로 설계를 위한 기준의 필요성에 착안하여 성능기반항행(PBN) 개념을 횡 방향 폭에 관한 기준을 제시하였다. 본 연구에서는 비행체가 정상 경로를 이탈하여 장애물과 충돌 없이 본래 경로로 돌아오는 이탈 범위 개념을 적용하였다. 정상적인 운항구역을 Normal Operating Area로, 이 구역을 이탈하여 본래의 경로로 돌아올 때까지의 구역을 Recovery Area로 구분하고 이 두 개 구역을 UAM 비행경로를 위한 횡 방향 폭으로 설정하였다. 산출된 폭의 범위에 대해서는 민감도 분석과 충돌 위험 평가를 수행하여 안전성을 확인하였고 국제 표준과 비교함으로써 적용 가능성과 효용성을 확인하였다. As an alternative to solve the problems of traffic congestion and environmental pollution caused by overpopulation Urban Air Mobility(UAM) has emerged as a new mode of transportation. For the commercialization of UAM, various technologies and regulations must precede, and there is a demand for establishing design criteria of flight path(Corridor) for safe operations. This study focuses on the necessity of criteria for UAM flight path design and presents standards based on the concept of Performance Based Navigation(PBN) related to lateral width. In this research, the concept of deviation range is applied, allowing an aircraft to deviate from its normal path and return to its original route without colliding with obstacles. The operational area under normal conditions is defined as the Normal Operating Area, and the area until the aircraft returns to its original path after deviating is defined as the Recovery Area. These two areas are established as the lateral width for UAM flight path. For the calculated range of widths, sensitivity analyses and collision risk assessments were conducted to confirm safety, and comparisons with international standards were conducted to confirm applicability and effectiveness.
장혜원(Hyewon Jang) 국제법평론회 2024 국제법평론 Vol.- No.68
This study explores the international regulatory and cooperation frameworks for carbon capture and storage (CCS) technology as a key technology for achieving carbon neutrality. Since the entry into force of the Paris Agreement in 2016, the world has been making various efforts to reduce greenhouse gas emissions and achieve carbon neutrality, with CCS emerging as one of the most important technologies in this endeavor. CCS is a technology that reduces the concentration of carbon dioxide in the atmosphere by safely storing captured carbon dioxide underground, playing an essential role, particularly in hard-to-abate industrial sectors. The study examines the concept of CCS and recent trends, and analyzes the regulatory developments related to CCS under the London Protocol for the protection of the marine environment. Specifically, it reviews the legal basis for CCS technology established through the 2006 and 2009 amendments to the London Protocol and the specific regulations governing the injection of CO2 streams into sub-seabed geological formations. Additionally, it emphasizes the need for agreements and accords to strengthen international cooperation and clarifies compliance conditions such as reporting requirements to the International Maritime Organization (IMO). In conclusion, the London Protocol aims to protect the marine environment and reduce greenhouse gas emissions through requirements related to the composition of CO2 streams, assessment procedures, international cooperation, permit issuance, and reporting procedures. This regulatory framework makes a significant contribution to the international community's response to climate change, and it is expected that safe and effective CCS projects will be promoted through continued international cooperation. This study aims to contribute to establishing a regulatory foundation for the efficient operation and environmental protection of such international CCS projects.
주행속도 및 엔진부하 조건이 실제도로 주행배출가스 특성에 미치는 영향
이동인 ( Dong-in Lee ),장혜원 ( Hyewon Jang ),이종태 ( Jongtae Lee ),차준표 ( Junepyo Cha ),전문수 ( Mun Soo Chon ) 한국액체미립화학회 2016 한국액체미립화학회 학술강연회 논문집 Vol.2016 No.-
Current laboratory-based emission test does not sufficiently represent the real-driving conditions. NOx emissions from gasoline vehicles have decreased significantly, but NOx emissions from diesel vehicles did not reduced. Especially NOx concentrations have not reduced less than expected in Seoul`s urban areas after 2008. In the present study, on-road NOx emissions were measured with PEMS under real driving conditions, including urban, rural, and motorway that routes and RDE characteristics according to the vehicle speed and engine load conditions were evaluated using a MAW method.