This study deeply discusses the development status of e-learning in basic music education in China, and summarizes the characteristics and development of music education course content, resources, evaluation and certification in the three countries through comparative analysis with e-learning platforms in South Korea and the United States, revealing the development trends and differences of global online music teaching. In the strategic analysis part, it is pointed out that, firstly, the development of basic music online teaching needs to be combined with online and offline hybrid teaching to promote the development of music education. Secondly, while learning from the advanced experience of e-learning in other countries, we should pay attention to innovative education methods、 expand the subject content. Finally, we should pay attention to the cultivation of students' learning ability to facilitate the establishment of an efficient learning model. The innovation of this paper lies in the comprehensive and in-depth research and comparison of the characteristics and case analysis of e-learning in music education in China, and at the same time, combined with the experience of South Korea and the United States, the implementation conditions and strategies for the situation in China are proposed, which provides strong theoretical support and practical guidance for the development of e-learning in music education in China based on the practical experience of different countries, and provides specific suggestions for further optimizing the practice of online music teaching.

Conducting a TSPA (Total System Performance Assessment) of the entire spent nuclear fuel disposal system, which includes thousands of disposal holes and their geological surroundings over many thousands of years, is a challenging task. Typically, the TSPA relies on significant efforts involving numerous parts and finite elements, making it computationally demanding. To streamline this process and enhance efficiency, our study introduces a surrogate model built upon the widely recognized U-network machine learning framework. This surrogate model serves as a bridge, correcting the results from a detailed numerical model with a large number of small-sized elements into a simplified one with fewer and large-sized elements. This approach will significantly cut down on computation time while preserving accuracy comparable to those achieved through the detailed numerical model.

PVA 섬유 보강 시멘트 복합체는 매우 복잡한 미세구조를 가지고 있으며, 재료의 거동을 정확히 평가하기 위해서는 미세구조 특성 을 반영하여 실제 실험과 시너지효과를 내며 효율적인 재료 설계를 가능하게 하는 해석 모델의 개발이 중요하다. PVA 섬유 보강 시멘 트 복합체의 역학적 성능은 PVA 섬유의 방향성에 큰 영향을 받는다. 그러나 마이크로-CT 이미지로부터 얻은 PVA 섬유의 회색조 값 을 인접한 상과 구분하기 어려워, 섬유 분리 과정에 많은 시간이 소요된다. 본 연구에서는 섬유의 3차원 분포를 얻기 위하여 0.65μm3 의 복셀 크기를 가지는 마이크로-CT 이미지 촬영을 수행하였다. 학습에 사용될 학습 데이터를 생성하기 위해 히스토그램, 형상, 그리 고 구배 기반 상 분리 방법을 적용하였다. 본 연구에서 제안된 U-net 모델을 활용하여 PVA 섬유 보강 시멘트 복합체의 마이크로- CT 이미지로부터 섬유를 분리하는 학습을 수행하였다. 훈련의 정확도를 높이기 위해 데이터 증강을 적용하였으며, 총 1024개의 이미지 를 훈련 데이터로 사용하였다. 모델의 성능은 정확도, 정밀도, 재현율, F1 스코어를 평가하였으며, 학습된 모델의 섬유 분리 성능이 매 우 높고 효율적이며, 다른 시편에도 적용될 수 있음을 확인하였다.

As the era of Covid-19 provoked the demand for online learning environments, research on the use of IT technologies in the teaching of Chinese is also drawing attention. This paper presents an overview of studies on mobile applications for learning Chinese in Korea, China, and the U.S.. This study aims to identify the current status of research on mobile applications for learning Chinese in Korea, and suggests directions for further research. In the review, a total of 135 studies were closely examined based on the year of publication, the subject, the method, and the research topic. After this, the features and overall flow of research in each country was identified. The necessity of revitalizing related research in Korea was highlighted. To this end, this study recommends actively conducting research, specifying the characteristics of the research subject, and extending the general process in studies of mobile applications for learning Chinese. This study expects Chinese education research on using various technologies to be further discussed.

The purpose of this study was to investigate the effectiveness of EarthComm implementation in the U.S. high schools in terms of demographic background including school size, urban/rural area, and teachers' teaching experiences. In addition, this study examined impact of students' higher-order thinking skills by using the visions of National Science Education Standards. Two modular of the EarthComm curriculum were used for this purpose with thirty one teachers and around thousand students involved across four states. Findings were that EarthComm did not significantly impact student achievement differentially in schools of varying sizes and school location, i.e., urban and rural areas. The years of teaching experiences did not impact student achievement scores for Module I but did significantly impact for Module II. It is noted that the two results seemingly conflict with each other similar to other research findings (Ferguson, 1998; Yager et al., 1988). Student higher-order thinking skills, on the other hand, were significantly improved as a result of studying with EarthComm. Implications were discussed at the end of the paper.