Ex) Article Title, Author, Keywords
Ex) Article Title, Author, Keywords
Abstract : This study investigated pre-service elementary school teachers' preconceptions regarding the shape of light from the bulbs passing through a small hole by varying the shape of the hole (circular or triangular) and the type of light source (point, linear, or composite). The analysis revealed that the majority of participants, regardless of the number or shape of light sources, responded that the light passing through a circular hole would form a single circular shape on the screen, while the light passing through a triangular hole would form a single triangular shape on the screen. Additionally, 74 participants (71.2%) consistently responded with misconceptions across all the questions. They believed that the shape of light projected onto the screen was determined by the hole shape in the mask, or that the light spread out in a circular manner after passing through the small hole. Furthermore, some participants believed that as the number or size of bulbs increased, the lit area on the screen would also become larger. The findings could be used as fundamental data for developing educational courses and programs at teacher training universities (colleges) to correct the pre-service elementary school teachers' misconceptions regarding the rectilinear propagation of light.
Abstract : Unlike normal interference signals, chirped interference signals cannot be used to obtain the position of a reflector using the Fourier transform. Instead, convolution can extract information about the center wavenumber of the chirped interference signal, which can then be converted into specific position information. The positions and full-width at half maximum (FWHM) of the characteristic peaks resulting from the convolution are interpreted as the position and spatial resolution of the reflector. In this study, the chirped interference signals were acquired by varying the wavelength resolution of the spectrometer from 0.05 to 1.0 nm and the convolution of these signals was analyzed. As the wavelength resolution of the spectrometer was varied, the position of the characteristic peak remained similar, but the FHWM increased proportionally. The spectral resolution of the spectrometer did not have a significant effect on determining the position of the reflector, but higher spectral resolution resulted in better spatial resolution.
Abstract : In recent years, generative AI technology, especially large language models (LLMs), has garnered significant attention for its potential to transform education. This paper provides an overview of generative AI's development and examines its impact on education, focusing on the issue of `hallucinations' in LLMs. It explores the causes and proposes solutions such as finetuning, reasoning, iterative querying, and Retrieval-Augmented Generation (RAG). These methods aim to enhance the accuracy and reliability of AI responses. Examples of AI applications in education include real-time student query responses, personalized learning pathways, and assessment feedback. While these technologies promise to improve educational quality, they also raise concerns about biases and data privacy. This paper discusses strategies to effectively utilize generative AI in education, aiming to improve quality while minimizing negative impacts.
Abstract : This study analyzed the understanding of interval voltage in electric circuits among elementary, middle, and high school students and pre-service physics teachers. As a result only 14.7% of elementary, middle, and high school students responded scientifically to the definition of voltage before the lesson, and 81.8% of pre-service physics teachers did. Second, less than 10% of students and pre-service physics teachers correctly predicted interval voltages in electric circuits and provided scientific explanations. Third, students and pre-service physics teachers almost accurately measured interval voltages, closely matching theoretical values, using both experimental methods using experimental tools and simulation. Fourth, survey results after the lesson indicated that both students and pre-service physics teachers considered the combination of measurement activities and simulation activities the most effective teaching method for learning interval voltage in electric circuits. Based on these results, implications for the science education and curriculum, as well as teaching and learning were discussed.
Abstract : Superconductor is a substance of zero-resistance below critical temperature and it has been attracted lots of attention from many researchers due to the possibility of applications in various field such as quantum computing which is the hottest topic on recent science community. However, for these applications, it is necessary to prepare high quality superconductor films and understand the physical characteristics of films. In this study, we grew YBa2Cu3O7(YBCO) thin films and established concrete conditions to synthesize highly qualified thin films with a high critical temperature and narrow transition width. Then, we analyzed samples showing different critical temperature using X-ray Diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), and Transmission Electron Microscope (TEM). Through the analysis, it is identified that there is ab twinning on YBCO film with a high critical temperature (∼93 K), which are strong evidences of tetragonal-orthorhombic phase transition.
Aekyung Shin, Donggeul Hyun, Jeongwoo Park
New Phys.: Sae Mulli 2023; 73(1): 37-43
https://doi.org/10.3938/NPSM.73.37
Geon Park, Inseo Kim, Hojung Sun, Yongjei Lee, Kimoon Lee, JungYup Yang
New Phys.: Sae Mulli 2023; 73(1): 23-28
https://doi.org/10.3938/NPSM.73.23
Bongwoo Lee*
New Phys.: Sae Mulli 2022; 72(10): 795-805
https://doi.org/10.3938/NPSM.72.795