명사와의 대담-천명기VS강석종

천명기,강석종,Cheon, Myeong-Gi,Gang, Seok-Jong 대한제과협회 1995 베이커리 Vol.1 No.-

Fighting the Spread of COVID-19 Misinformation on Social Media Predicting Two Types of Misinformation-Sharing Behaviors via Risk Perception, Social Media Literacy, Fear, and Organizational Trust

천명기,이태준 한국PR학회 2023 PR연구 Vol.27 No.3

Objectives The intertwining of the coronavirus spread with misinformation creates confusion among the people, significantly affecting their decision-making concerning vaccines and treatments. Given the ease with which individuals encounter COVID-19-related misinformation on social media platforms, it is imperative to anticipate and understand the behaviors of social media users with respect to sharing misinformation. This study aimed to validate a theoretical framework that seeks to predict two distinct types of misinformation-sharing behaviors: those who engage in fact-checking and those who do not. The study achieved this by investigating the influence of participants' perceptions of COVID-19 risk, their level of social media literacy, fear levels, and their trust in both the media and government for their fact-checking. Methods This study conducted an online survey that included 500 participants from South Korea. Hierarchical regression analysis was conducted to predict two distinct types of misinformation-sharing behaviors: those who engage in fact-checking and those who do not. Results The results of this study showed that fake news exposure and fear of COVID-19 were significant factors in predicting the two types of misinformation-sharing behaviors. By accounting for demographic information, exposure to fake news, and fear of COVID-19, the results of this study showed that trust in the media predicted individuals' misinformation-sharing behaviors without fact checks whereas social media literacy and trust in government led to fact-checking behavior before sharing misinformation related to COVID-19. Conclusions Infectious diseases like COVID-19 are likely to recur in the future. Consequently, the findings of this study carry both theoretical and practical significance within the realms of crisis and public communication. Specifically, the framework for predicting two distinct forms of misinformation-sharing behaviors may contribute to the development of communication theory. Furthermore, the outcomes of this study can offer valuable insights into the communication skills of professionals working in government positions.

Comparison of Nuclear Response Functions for Neutrino-induced Reactions via Neutral and Charged Currents

천명기 한국물리학회 2014 새물리 Vol.64 No.10

A Comparison of nuclear weak-response functions for neutrino-induced reactions via a neutral current (NC) and a charged current (CC) was done for a ^{12}C target. We used the neutrino cross-section data ^{12}C(\nu_e, \nu_e^{'})^{12}C^{*} (1^+) obtained at KARMEN and ^{12}C(\nu_e, e^{'})^{12}N^{*} (1^+) from the LSND experiments. Because neutrinos are very elusive particles to detect, experiments on the neutrino reaction or scattering are very challenging tasks, even in the CC reaction. The motivation for this study is to study whether or not one may estimate the neutrino-induced reaction by using the weak-response functions that are extracted from other nuclear reactions without using neutrino facilities. As a preliminary study for that purpose, in this work, we investigate each contribution of the weak-response functions to the total cross sections of the neutrino-induced reactions via a NC and a CC on a ^{12}C target.

Symmetry Energy, Pairing Correlations and Giant Resonances in Tin Isotopes

천명기 한국물리학회 2012 새물리 Vol.62 No.8

We investigated isoscalar giant monopole resonances (GMRs) and isovector giant dipole resonances (GDRs) in tin (Sn) isotopes to study the symmetry energy in the low density region by using the quasi-particle random phase approximation (QRPA). Centroid energies for the giant resonances were derived from corresponding transition amplitude strength distributions and compared to the available data. The changes in the centroid energies of the resonances in the Sn isotopes are discussed in detail with the incompressibility.

소집단 자유 탐구에서 과학적 탐구 문제 발견 과정의 특징 분석

천명기,이봉우 한국과학교육학회 2018 한국과학교육학회지 Vol.38 No.6

The purpose of this study is to explore the process of inquiry problem finding in high school students' small group free-inquiry. For this purpose, 91 second grade high school students took part in small group free-inquiry. We conducted interviews with students (48 students in 15 groups) who were relatively successful in the inquiry performed for one semester (about 4 months). Based on the results of the interviews, we analyzed the characteristics of the inquiry problem finding through the steps and strategies in the inquiry problem finding process. The main results are as follows: First, in the inquiry problem finding process, steps such as selecting keyword, presenting an inconvenience, presenting a question, and finding an inquiry problem were found, and in particular, the process of selecting the keyword that correspond to the subject of inquiry, such as the material and situation of inquiry, is very important step in inquiry problem finding. Second, the strategies that students used in the process of finding inquiry problem included searching information, review of prior research, sharing of knowledge and experience, linking and extension of knowledge and experience, environmental awareness, expert consultation, discussion of suitability, elaboration, etc. Third, finding an inquiry problem was relatively easy in the inquiry for finding out problems (i.e. inconvenience) in everyday life and investigating ways to solve them. Fourth, the review of prior researches through the internet was useful in the process of selecting keyword and elaboration. Fifth, the factors that students consider when selecting one of several candidate inquiry problems are feasibility, real-life applicability, and economic condition. Sixth, the current affairs had a positive impact on the inquiry problem finding. Based on the above results, we discussed some ways to increase students’ inquiry problem finding ability. 본 연구의 목적은 고등학교 학생들의 소집단 자유 탐구 활동에서의 탐구 문제 발견 과정을 탐색하는 것이다. 이를 위하여 고등학교 2학년 학생 91명을 대상으로 자유 탐구를 수행하게 하였다. 한 학기(약 4개 월) 동안 이루어진 탐구 과정 중 비교적 성공적으로 탐구를 수행한 15개 모둠, 48명의 학생들을 대상으로 모둠별 심층 면담을 실시하였 다. 면담 결과를 바탕으로 학생들의 탐구 과정에서 나타난 탐구 문제 발견의 단계와 탐구 문제 발견을 위해 시도한 전략을 통해 탐구 문제 발견 과정의 특징을 분석하였다. 주요 연구 결과는 다음과 같다. 첫째, 탐구 문제 발견 과정에서 주제어 선정, 문제점 제시, 의문점 제시, 탐구 문제 발견 등의 단계가 발견되었으며, 특히 탐구의 소재, 상황 등의 탐구 대상에 해당하는 주제어 선정 과정이 많이 발견되었다. 둘째, 학생들이 탐구 문제 발견 과정에서 사용한 전략으로는 정보 탐색, 선행 연구 탐색, 지식/경험의 공유, 지식/경험의 연결과 확장, 환경 인식, 전문가 자문, 적합성 논의, 정교화 등이 발견되었다. 셋째, 일상생활에서의 문제점을 발견하고 이를 해결하는 방안을 연구하는 형태의 탐구에서는 문제 발견 과정이 비교적 쉽게 이루어졌다. 넷째, 인터넷을 통한 선행 연구의 탐색은 주제어 선정 및 탐구 주제의 정교화 과정에서 유용하게 활용되었다. 다섯째, 학생들이 여러 개의 후보 탐구 주제 중 하나를 선택할 때 고려하는 주요 요인은 실행 가능성, 실생활 적용 가능성, 경제성 등이었다. 여섯째, 시사적인 상황이 탐구 주제 생성에 영향을 주었다. 이상의 내용을 바탕으로 학생들의 탐구 문제 발견을 도와 줄 수 있는 몇 가지 방안을 논의하였다.

A Description of the Neutrino Reaction on 12C with the Quasi-Particle Shell Model

천명기,이수연,이춘식,J. H. Lee,김경식,소운영 한국물리학회 2009 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.55 No.5

We present a schematic calculation for the neutrino-induced reaction on 12C, which is one of the key reactions for understanding the nucleosynthesis of light nuclei, such as the abundance of 7Li and 11B, in a core collapsing supernova. Our model adopted here is the quasi-particle shell model, which is a Hartree-Fock-type mean field of non-interacting quasi-particles. A detailed prescription of neutrino-nucleus scattering by using the model is discussed and are presented some results for the charged current reaction on 12C, 12C (νe, e−)12 Ng.r..

핵합성연구를 위한 핵구조 및 핵질량 모델 연구 동향

천명기,김도균,김종찬,박규준,윤민영,윤종철 한국물리학회 2006 새물리 Vol.53 No.2

Since nucleosynthesis in the universe or in a star occurs at high temperature and high density, a study of the structure of unstable nuclei is inescapable. Here we report some methods to theoretically describe the unstable nuclear structure and the nuclear mass model, which play important roles in the network calculation for nucleosynthesis. 천체에서의 핵합성은 고온 고밀도에서 이루어지기 때문에 핵합성연구를위해서는 불안정 원자핵의 구조연구가 필수적이다. 여기서는 불안정원자핵 구조를 이론적으로 기술하는 방법과 실제로 핵합성연구를 위한핵반응네트워크 계산의 중요한 입력 변수가 되는 핵질량 모델의 최근동향과 앞으로의 전망을 정리하였다.

Sigma and Sigma-Like Terms in Pion Weak-Production Near Threshold

천명기,최태근,김경식 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.2

The scalar and the pseudo-scalar (PS)form factors represent the scalar and the PS quark density distributions, respectively, on a nucleon due to finite quark mases, and they are directly related to the α term in π - N scatering and to the-like term in charged pion electro-production. We show that they manifest themselves in pion weak-productions. We also discus how to deduce and estimate the effects of such form factors in pion weak-productions.

Threshold Anomaly for 6,7Li Projectiles

천명기,Su Youn Lee,소운영,하은자,김경식 한국물리학회 2009 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.55 No.5

Based on the optical model approach, we investigate the threshold anomaly in the elastic scattering of the 6,7Li + 59Co and the 6,7Li + 138Ba systems at near-Coulomb-barrier energies by using a χ2 analysis. A folding potential is exploited as the bare potential for the systems. We found the threshold anomaly for both the 7Li + 59Co and the 7Li + 138Ba systems. In contrast to the 7Li + 59Co and the 7Li + 138Ba systems, however, both the 6Li + 59Co and the 6Li + 138Ba systems do not show the threshold anomaly. This difference is known to stem from the structure of the incident nuclei. In this study, we confirmed again a feature of the threshold anomaly due to the incident nuclei. Based on the optical model approach, we investigate the threshold anomaly in the elastic scattering of the 6,7Li + 59Co and the 6,7Li + 138Ba systems at near-Coulomb-barrier energies by using a χ2 analysis. A folding potential is exploited as the bare potential for the systems. We found the threshold anomaly for both the 7Li + 59Co and the 7Li + 138Ba systems. In contrast to the 7Li + 59Co and the 7Li + 138Ba systems, however, both the 6Li + 59Co and the 6Li + 138Ba systems do not show the threshold anomaly. This difference is known to stem from the structure of the incident nuclei. In this study, we confirmed again a feature of the threshold anomaly due to the incident nuclei.

Effects of the Pairing Interactions among the Nucleons in Exotic Nuclei within the Hartree Fock Bogoliubob (HFB) Theory

천명기,Fedor Simkovic,Amand Faessler 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.2

We investigated the effects of nucleon pairing interactions, which include like nucleon pairing (neutron-neutron and proton-proton pairing) and unlike nucleon pairing (neutron-proton) interac- tions, on nuclear structure. In specic, the importance of the unlike pairing is detailed in medium heavy nuclei, such as isotopes of Ge and Zr. Al calculations are carried out within the Hartree Fock Bogoliubob theory in the Nilson basis in order to consider the deformation of the nuclei, which is a typical phenomenon in the exotic nuclei relevant to nucleosynthesis. Our results show that the unlike pairing interactions could play vital roles in understanding the nuclear structure. Even the ordinary nuclei, which are not usualy expected to have such large unlike proton pairing interac- tions, because of large Fermi energy gaps between protons and neutrons, could have unlike pairing interactions strong enough to be deliberately included. Our results are applied to the 64-76Ge and the 80-100Zr isotope series, which nuclei have recently been exploited as important isotopes in the rapid proton process in nucleosynthesis.