• Title/Summary/Keyword: Hierarchical Order

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Particle Tagging Method to Study the Formation and Evolution of Globular Clusters in Galaxy Clusters

  • Park, So-Myoung;Shin, Jihye;Smith, Rory;Chun, Kyungwon
    • The Bulletin of The Korean Astronomical Society
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    • v.46 no.1
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    • pp.29.3-29.3
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    • 2021
  • Globular clusters (GCs) form at the very early stage of galaxy formation, and thus can be used as an important clue indicating the environment of the galaxy formation era. Although various GC formation scenarios have been suggested, they have not been examined in the cosmological context. Here we introduce the 'particle tagging method' in order to investigate the formation scenarios of GCs in a galaxy cluster. This method is able to trace the evolution of GCs that form in the dark matter halos which undergo the hierarchical merging events in galaxy cluster environments with an effective computational time. For this we use dark matter merger trees from the cosmological N-body simulation. Finally, we would like to find out the best GC formation scenario which can explain the observational properties of GCs in galaxy clusters.

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3D epigenomics and 3D epigenopathies

  • Kyung-Hwan Lee;Jungyu Kim;Ji Hun Kim
    • BMB Reports
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    • v.57 no.5
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    • pp.216-231
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    • 2024
  • Mammalian genomes are intricately compacted to form sophisticated 3-dimensional structures within the tiny nucleus, so called 3D genome folding. Despite their shapes reminiscent of an entangled yarn, the rapid development of molecular and next-generation sequencing technologies (NGS) has revealed that mammalian genomes are highly organized in a hierarchical order that delicately affects transcription activities. An increasing amount of evidence suggests that 3D genome folding is implicated in diseases, giving us a clue on how to identify novel therapeutic approaches. In this review, we will study what 3D genome folding means in epigenetics, what types of 3D genome structures there are, how they are formed, and how the technologies have developed to explore them. We will also discuss the pathological implications of 3D genome folding. Finally, we will discuss how to leverage 3D genome folding and engineering for future studies.

Rethinking Soft Power from the Power Recipient's Perspective: Voluntary Compliance is the Key

  • Kadir Jun Ayhan
    • Journal of Public Diplomacy
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    • v.3 no.1
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    • pp.1-13
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    • 2023
  • In this editorial, I build on my recent article (Ayhan, 2023) to explain three ideal types of power recipients' compliance with power wielders' desires: fear-, appetite-, and spirit-based compliance. Soft power is often conflated with fear- or appetite-based compliance, but it is actually present when power recipients comply voluntarily with power wielders while maintaining their sense of esteem and agency. Habit is the hardened effects of soft power. It comes into play when voluntary compliance becomes commonsense and habitual, although this compliance could initially rest on fear or appetite. I illustrate the ideal types with a case study of regional actors' motives for compliance with China-centric hierarchical order in historic East Asia.

The World Order of Vietnamese Empire during the First Half of the 19th Century (19세기 전반 베트남 제국(帝國)의 국제질서)

  • Choi, Byung-Wook
    • The Southeast Asian review
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    • v.21 no.1
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    • pp.249-286
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    • 2011
  • This study examines the nature of the world order or the international relations of the 19th century Vietnam. Those who are familiar with the Chinese world order based on the tributary system, have applied the quasi-Chinese world order concept to Vietnam by the terms of 'smaller dragon,' 'little China,' and 'Chinese model.' According to this way of understanding, Vietnamese empire was the imitation or the small sized version of the Chinese empire. Examples are to label Vietnamese emperor as the "Southeast Asian version of the Chinese emperor" or "an absolute photocopy of the Chinese world order." But the author of this article raises questions to this framework of the Chinese Model, and looks for the Vietnamese own world order based on the Southeast Asian tradition. Two issues are discussed in this study. First is the Vietnamese relationships with Southeast Asia. According to author, the first concern of Vietnam in relation to diplomatic relations was to the Mainland Southeast Asian countries. To clarify the contacts with Southeast Asia and Western powers, Vietnamese relationships with the regions of Island Southeast Asian countries were also examined. Second issue is to see the ways how Vietnam maintained its own world order in the course of wars and diplomacy with China. Author argues that the world order of the 19th century Vietnam was closer to the traditional world order of mandala in the Southeast Asia than to the quasi Chinese world order. The relationships among the countries were rather equal than hierarchical. Vietnam regarded the countries of Southeast Asia especially Thailand and Burma as the equal countries. China was one of the equal countries to the eyes of Vietnamese leaders and Vietnam did not have enough room to embody the quasi Chinese world order though the Vietnamese rulers used the titles of emperor, which was the Vietnamese version of Southeast Asian 'king.' In conclusion, the world order of Vietnam is summarized into the two facets of $l{\hat{a}}n$ giao(diplomatic relations with neighbors) and bang giao(diplomatic relations between two countries i.e. Vietnam and China). $l{\hat{a}}n$ giao was to the countries of Southeast Asia while the bang giao was the term and concept for the diplomatic relationship with China. These two relationships composed Vietnamese foreign relationship, ngo?i giao. Author claims that these two relations were based on the spirit of equality that emerged from the beginning of the 19th century.

The Design and Implementation of a Traffic Order and Safety Education System for Kid on Web (웹기반 어린이 교통 질서 및 안전 교육 시스템의 설계 및 구현)

  • An, Syung-Og
    • The Journal of Engineering Research
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    • v.3 no.1
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    • pp.7-20
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    • 1998
  • With our economic development and increment and increment of GNP, the number of autos has incremented. But lacking in mind for traffic safety and traffic order, many traffic accidents have occurred. So the purpose of development of traffic safety education system based on web is to advertise the importance and the need of traffic order and safety education and protect walkers and drivers from traffic accidents. The Contents and Scopes of Study Development are as follows. There are input of text, image and moving image data for traffic safety education, establishment of hierarchical relation for traffic safety education, relation analysis between traffic safety education information and design of hyper link structure between them, thesaurus implementation for traffic safety education system, design and implementation of information retrieval engine based on thesaurus, design and implementation of database schema for traffic safety education and GUI implementation for user.

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A Study on the Organization of Literary Archives as National Cultural Heritage (국가문화유산으로서 문학기록의 조직화 방안)

  • Lee, Eun Yeong
    • The Korean Journal of Archival Studies
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    • no.61
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    • pp.31-69
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    • 2019
  • This study seeks to find an organizational method suitable for literary records through a review of the application of records management and an archival exploration of the literary materials of the authors, which are housed in a decentralized collection of domestic literary museums. First, through literature research and case analysis, I explored the "principles of original order" for organizing by characteristics and values of literary records. Next, the organization model was applied to the literature materials of author Jo Jung-rae(1943~) that existed in the form of a 'split-collection' in the local literature museum after drawing a model suitable for organizing literary records as an example. In order to gain an integrated approach to the 'split-collection' by Cho Jung-rae, the research result suggests a model provided through a single gateway by linking descriptive information related to ICA AtoM-based 'Records-Writers-Literature Museum'. The organizational model for the collection of individual literature museum was designed to provide richer collective and contextual information compared to the existing simple list by developing a hierarchical classification system in accordance with the principle of record organizing.

The Selective p-Distribution for Adaptive Refinement of L-Shaped Plates Subiected to Bending (휨을 받는 L-형 평판의 적응적 세분화를 위한 선택적 p-분배)

  • Woo, Kwang-Sung;Jo, Jun-Hyung;Lee, Seung-Joon
    • Journal of the Computational Structural Engineering Institute of Korea
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    • v.20 no.5
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    • pp.533-541
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    • 2007
  • The Zienkiewicz-Zhu(Z/Z) error estimate is slightly modified for the hierarchical p-refinement, and is then applied to L-shaped plates subjected to bending to demonstrate its effectiveness. An adaptive procedure in finite element analysis is presented by p-refinement of meshes in conjunction with a posteriori error estimator that is based on the superconvergent patch recovery(SPR) technique. The modified Z/Z error estimate p-refinement is different from the conventional approach because the high order shape functions based on integrals of Legendre polynomials are used to interpolate displacements within an element, on the other hand, the same order of basis function based on Pascal's triangle tree is also used to interpolate recovered stresses. The least-square method is used to fit a polynomial to the stresses computed at the sampling points. The strategy of finding a nearly optimal distribution of polynomial degrees on a fixed finite element mesh is discussed such that a particular element has to be refined automatically to obtain an acceptable level of accuracy by increasing p-levels non-uniformly or selectively. It is noted that the error decreases rapidly with an increase in the number of degrees of freedom and the sequences of p-distributions obtained by the proposed error indicator closely follow the optimal trajectory.

Moderating and Mediating Effects of Nursing Professionalism between Major Satisfaction and College life Adaptation among Nursing Students (간호대학생의 전공만족도와 대학생활 적응의 관계에서 간호전문직관의 조절 및 매개효과)

  • Choi, Hyun-Ju
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.18 no.6
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    • pp.68-77
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    • 2017
  • This study investigated the relationships among major satisfaction, nursing professionalism, and college life adaptation of the nursing students in order to present basic data to assist in adaption of college life. The study subjects were 553 nursing students from two universities in K and P cities by self-report questionnaire survey. Data were collected between November 7 and November 25, 2016. The data were analyzed through frequency analysis, descriptive statistics, t-test, ANOVA, Scheffe test, Pearson correlation coefficient, and hierarchical regression using SPSS 21.0 program. As a result, major satisfaction, nursing professionalism, and college life adaptation averaged 3.86(out of 5), 3.97(5), and 3.34(5) respectively. There was a significant positive correlation between major satisfaction and nursing professionalism, college life adaptation on nursing students. In addition, nursing professionalism had moderating(F=8.460, p=.004) and partial mediating (${\beta}=.21$, p<.001) effects between major satisfaction and college life adaptation among nursing students. In conclusion, nursing professionalism is a very important factor in the effects of major satisfaction of nursing students on college life adaptation. Therefore, in order to promote college life adaptation of nursing students, and increase their major satisfaction, it is necessary to develop and apply an educational program that can establish the right nursing professionalism.

The Effects of Physical Self-concept on Self-efficacy among University Students in Sports : Focusing on Hierarchical Regression Analysis. (스포츠에 참여 중인 대학생들의 신체적 자기개념이 자기효능감에 미치는 영향: 위계적 회귀분석을 중심으로)

  • Park, Young-Chan;Ko, Wi-Sug
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.18 no.5
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    • pp.318-329
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    • 2017
  • This study examined the physical self-concept and self-efficacy of undergraduates. Using the convenience sampling method of non-provability sampling, a total of 377 undergraduates from North Kyongsang Province G city were selected. Of the 377 completed questionnairescollected, a total of 354 surveys with structural equation modeling were analyzed using theSPSS 22.0 statistics program. The self-esteem, endurance, health, and flexibility factors have positive effects on improvingthe self-control efficacy factor of self-efficacy in the order of physical self-concept factors. On the other hand,the higher university students perceive that among the physical self-concepts, the physical activity factor had more negative effects on the self-regulated efficacy. The self-esteem, health, and muscle strength have positive effects on improvingthe confidence factor of self-efficacy in the order of physical self-concept factors. The more perceptive endurance than the appearance, sports competence, body fat, health, self-esteem, flexibility, muscle strength of physical self-concept, and the more influence on self-efficacy. Overall, the higher the perception of physical activity factors among the physical self-concept factors, the more negative effects on the task difficult preference.

Tracking Moving Object using Hierarchical Search Method (계층적 탐색기법을 이용한 이동물체 추적)

  • 방만식;김태식;김영일
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.7 no.3
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    • pp.568-576
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    • 2003
  • This paper proposes a moving object tracking algorithm by using hierarchical search method in dynamic scenes. Proposed algorithm is based on two main steps: generation step of initial model from different pictures, and tracking step of moving object under the time-yawing scenes. With a series of this procedure, tracking process is not only stable under far distance circumstance with respect to the previous frame but also reliable under shape variation from the 3-dimensional(3D) motion and camera sway, and consequently, by correcting position of moving object, tracking time is relatively reduced. Partial Hausdorff distance is also utilized as an estimation function to determine the similarity between model and moving object. In order to testify the performance of proposed method, the extraction and tracking performance have tested using some kinds of moving car in dynamic scenes. Experimental results showed that the proposed algorithm provides higher performance. Namely, matching order is 28.21 times on average, and considering the processing time per frame, it is 53.21ms/frame. Computation result between the tracking position and that of currently real with respect to the root-mean-square(rms) is 1.148. In the occasion of different vehicle in terms of size, color and shape, tracking performance is 98.66%. In such case as background-dependence due to the analogy to road is 95.33%, and total average is 97%.