• 천문학회보
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• 제39권1호
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• pp.27-27
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• 2014

The past three decades have witnessed a renaissance in the field of extragalactic globular clusters (GCs). GC systems have now been investigated in galaxies ranging from dwarfs to giants and spanning all the morphological types. Detailed studies of GCs provide strong constraints on galaxy formation that can be obtained in the near-field. In this talk I will review some of the pivotal studies performed with the HST and large ground-based telescopes and state-of-the-art simulations. Also, I will attempt to introduce my new solution to a long-standing puzzle in this field----the origin of GC bimodality in color. I will show that the theory gives a simple, cohesive explanation for the key observations of extragalactic GCs. The implication of the results will be discussed in the context of formation of GC systems and their parent galaxies.

• 천문학회보
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• 제45권1호
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• pp.63.1-63.1
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• 2020

We investigate the effect of recent star formation (RSF) on the α-elements-to-iron ratio ([α/Fe]) estimation for galaxies. Measuring galactic [α/Fe] is a powerful tool to pinpointing the timescale of chemical evolution and star formation. Our working hypothesis is that, with increasing stellar surface temperature, absorption equivalent width (EW) of α-elements decreases faster than that of Fe-peak elements, and thus RSF will lower the line ratio of EW(α)/EW(Fe). Moreover, young stars outshine, effectively lowering EW(α)/EW(Fe) of integrated light of RSF galaxies. Here we test our hypothesis using SDSS (optical spectrophotometric), GALEX (UV photometric) and IllustrisTNG datasets, and show that, if RSF is not considered thoroughly, EW(α)/EW(Fe) lowered by RSF can be routinely misinterpreted as low [α/Fe]. We discuss possible implications of the result in the context of the conventional [α/Fe]-mass relation of galaxies.

• 수산해양교육연구
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• 제25권2호
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• pp.538-551
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• 2013

The purpose of this study is to evaluate policy formation stage of Meister high schools. The study analyzed the differences in the recognition of teachers, students, parents, and vocational education specialists about policy evaluation for policy formation stage of Meister high schools. The conclusions based on the results of the study are as follows: First, in context area the recognition of students showed relatively low level. It reflects that the principle of democracy is needed to the policy formation stage of Meister high schools. The participation of stake holders in the policy formation stage is essential. Second, in input area teachers recognized that the financial resources were sufficient. Vocational education specialists recognized that human resources, such as excellent teachers and Meister teachers, needed to recruited adequately. Third, many policies and institutions need to be established for Meister high schools. The Meister high schools should be selected based on the principle of equity. In the selection process vocational education specialists should be included for the principle of professionalism.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2005년도 추계학술대회 논문집
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• pp.205-209
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• 2005

A traditional settlement, in a long history establishment, is appeared to be configured of the people and their life in the areas. This is, a positive aspects, compared to most of the city in these day which is monotonous aspects. The purpose of this research deals what is the formation process and spatial character in urban settlement of Naju city, and how to applicate in a modern city context. For the research goals, it analyse an old Naju Castle area, transformation of the land use through the cadastral survey, and spatial character through step by step in chronical approach. The process of change can be seen in the devide pattern in a lot, formation and extension of a private road, and formation and change of the road; This shows how to changes traditional settlement in a old urban areas of Naju city. A now road system in old area, as a conflict, push the change of the spatial organization, and the balance of the identity of a traditional settlement and a new change as a convenient needs, it is a key point to get ideal settlement.

• International Journal of Computer Science & Network Security
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• 제22권10호
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• pp.51-56
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• 2022

The main purpose of the article is to analyze the main approaches to the formation of the food system in modern conditions. The constant growth of the population, the increase in the level of use of natural resources against the background of a decrease in their reserves causes a number of risks for the food security of both a person and the country as a whole. The problem of the formation of food security has always remained at the center of scientific interests of both domestic and foreign researchers. In the context of globalization, this issue is considered as one of the key global problems in the system. Theoretical and metodological basis studia systematic approach to study of fundamental provisions of economic science regarding the formation of the food system. Based on the results of the study, the main approaches to the formation of the food system in modern conditions were characterized. The study has limitations associated with the lack of the ability to analyze the food system on the practical activities of a single socio-economic system.

• 천문학회보
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• 제46권2호
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• pp.81.1-81.1
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• 2021

Stellar kinematics is a useful tool to understand the formation and evolution of young stellar systems. Here, we present a kinematic study of the HII region, NGC 821, using the Gaia Early Data Release 3. NGC 281 contains the open cluster IC 1590. This cluster has a core and a low-stellar density halo. We detect a pattern of cluster expansion from the Gaia proper motion vectors. Most stars radially escaping from the cluster are distributed in the halo. We measure the 1-dimensional velocity dispersion of stars in the core. The velocity dispersion (1 km/s) is comparable to the expected virial velocity dispersion of this cluster, and therefore the core is at a virial state. The core has an initial mass function shallower than that of the halo, which is indicative of mass segregation. However, there is no significant correlation between stellar masses and tangential velocities. This result suggests that the mass segregation has a primordial origin. On the other hand, it has been believed that the formation of young stars in NGC 281 West was triggered by feedback from massive stars in IC 1590. We investigate the ages of stars in the two regions, but the age difference between the two regions is not comparable to the timescale of the passage of an ionization front. Also, the proper motion vectors of the NGC 281 West stars relative to IC 1590 do not show any systematic receding motion from the cluster. Our results suggest that stars in NGC 281 West might have been formed spontaneously. In conclusion, the formation of NGC 281 can be understood in the context of hierarchical star formation model.

• 디지털융복합연구
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• 제18권7호
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• pp.149-156
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• 2020

본 연구에서는 SNS 사용자들의 온라인 관계 친밀도에 영향을 미치는 선행 요인들을 살펴보았다. 사용자들의 이용과 욕구 이론을 바탕으로 자기 표현, 관계 형성, 정보 검색을 SNS의 주요 사용 욕구로 정의하였다. 이 사용 욕구들은 사용자 만족, 주관적 행복, 정보 게시 행동을 통해 온라인 관계 친밀도에 영향을 미칠 것으로 예상하였다. 본 연구는 종단적 연구 방법을 활용하였으며, 페이스북 사용자 199명을 대상으로 연구 모형을 검증하였다. 자기 표현과 정보 검색은 사용자 만족과 주관적 행복에 유의한 영향을 미쳤다. 하지만, 관계 형성은 사용자 만족과 주관적 행복 모두 유의한 영향을 미치지 않았다. 사용자 만족은 온라인 관계 친밀도에 직접적으로만 유의한 영향을 미쳤다. 주관적 행복은 정보게시 행동과 온라인 관계 친밀도 모두 유의한 영향을 미쳤다. 마지막으로 정보 게시 행동은 온라인 관계 친밀도 증진의 핵심 요인임을 밝혀내었다. 본 연구 결과는 온라인 관계 친밀도에 대한 학문 및 실무적 시사점을 제공해 줄 수 있을 것으로 기대된다.

• 한국의사학회지
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• 제36권2호
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• pp.49-59
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• 2023

This paper describes the transformation of the knowledge system of Korean medicine in the early 20th-century colonial context of the 1920s in terms of 'identity formation'. At the time, newly introduced Western medicine was the dominant form of medical knowledge due to strong support from the colonial government but had did not enjoy popular support from the general public especially when compared to Korean medicine. Furthermore, the Japanese colonial government needed to utilize Korean medicine practitioners' labor due to a serious shortage of Western medicine doctors. In this context, Dongseo uihak youi (Essentials of Eastern and Western Medicines) provides an overview of the role of Korean medicine practitioners in the colonial healthcare system of the time. The book contains a figure of a 'modern' Korean medicine practitioner working within a healthcare system influenced by colonial modernity. The association of Korean medicine doctors at that time not only published Dongseo uihak youi but also attempted to establish a school specializing in both Eastern and Western medicines or integrated Korean medicine, which would produce "the Chosŏn doctors" (Chosŏn ŭisa) on a par with doctors trained in Western medicine. Although their attempts did not materialized, they provide a clue as to how and in what direction Korean medicine pursued its identity in the 1920s.

• 한국게임학회 논문지
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• 제15권4호
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• pp.111-120
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• 2015

본 연구의 목적은 전(前)게임기의 사회문화적 맥락은 어떠했으며, 그것이 게임의 정체성 형성에 어떻게 작용했는지를 고찰하는 것이다. 게임은 그 존재양식이 처음부터 고정되어 일관된 정체성을 지니고 발전한 것이 아니다. 다양한 담론과 기술, 사회적인 요소와의 접합 과정에서 역사적으로 배태된 결과물이라 할 수 있다. 1960년대 회전당구를 비롯한 기계오락 장치는 도시 대중의 유흥을 위해 활발히 소비되었으며, 본격적으로 게임이 등장하기 전에 사행성 문제 및 병리적 현상으로서 사회적 긴장 관계를 형성하였다. 이들 기계오락은 1970년대 이후 전자오락으로 이어지는 흔적이 나타나는 등 현재 디지털 게임 문화의 흐름과 맞닿아 있다.

• Journal of Contemporary Eastern Asia
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• 제18권2호
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• pp.68-89
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• 2019

When comparing media freedom in Malaysia, Myanmar, and Thailand, so-called "fake news" appears as threats to a deliberative (online) public sphere in these three diverse contexts. However, "racist propaganda", "information operations" and "negative campaigning" might be more accurate terms that explain these forms of systematic manipulative political communication. The three cases show forms of disinformation in under-researched contexts and thereby expand the often Western focused discourses on hate speech and fake news. Additionally, the analysis shows that harmful disinformation disseminated online originates from differing contextual trajectories and is not an "online phenomenon". Drawing on an analysis of connotative context factors, this explorative comparative study enables an understanding of different forms of harmful disinformation in Malaysia, Myanmar, and Thailand. The connotative context factors were inductively inferred from 32 expert interviews providing explanations for the formation of political communication (control) mechanisms.