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Titius-Bode's Relation in Exoplanetary Systems

  • Heon-Young Chang
    • Journal of Astronomy and Space Sciences
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    • v.40 no.2
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    • pp.67-77
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    • 2023
  • The Titius-Bode's relation has been historically successful in predicting the location of Ceres in the solar system, while its physical basis remains hidden. In this study, we attempt to answer the question of whether the Titius-Bode's relation is universally valid for exoplanetary systems with plural exoplanets. For this purpose, we statistically study the distribution of the ratio of the orbiting periods of two planets in 32 exoplanetary systems hosted by a single star. We only consider the period ratios derived from exoplanets orbiting a single star since celestial objects under investigation are kept as simple as possible and free from uncertainties such as the mass of the host star. We find that the distribution of period ratios of two exoplanets appears inconsistent with that derived from the Titius-Bode's relation using the χ2 test. We also found that the distance distribution in exoplanetary systems unlikely follows the uniform distribution or the Poisson's distribution. It is noted, however, that more rigorous statistical tests should be carried out to reach a more certain conclusion.

The Automatic Mesh Refinement of FEM and Posteriori Error Estimation (유한요소의 자동 재분할과 사후오차평가)

  • Kim, B. I.;Bai, S. H.;Chang, C. D.
    • Journal of Korean Port Research
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    • v.10 no.2
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    • pp.61-68
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    • 1996
  • The main problems in structural analysis by Finite Eelement Method are difficulty in making data file and error estimation. For decreasing these problems' pays. have been suggesting the adaptive mesh refinement and error estimation method. Posteriory error estimation methods suggested by Jang[1], Babuska[2,3], Ohtsubo[8,9], and this paper. Comparing these methods and examine their properties. According this paper, In the problem supposed having singularity, the method suggested by this paper is good, But the problem supposed having no singularity, the method suggested by Jang[1] is good. For decreasing the effect of initial mesh in p-refinement, make application h-refinement at first and apply p-refinement, and confine polynomial's degree to two, for making program simply by plural mesh models are not needed.

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Unchosen Cohabitation of Hannah Arendt and Precarity Politics of Judith Butler: Based on Body Politic and Ethical Obligation (한나 아렌트의 비선택적 공거와 주디스 버틀러의 프레카리티 정치학: 몸의 정치학과 윤리적 의무)

  • Cho, Hyun June
    • Cross-Cultural Studies
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    • v.48
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    • pp.361-389
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    • 2017
  • This essay examines 'precarity politics' by Judith Butler, a well-known gender theorist and queer philosopher, in Notes Towards a Performative Theory of Assembly (2015) focused on concepts as unchosen cohabitation of Hannah Arendt and unwilled proximity of Emmanuel Levinas. Butler's precarity politics is the condition of our dispossessed political beings with fundamental vulnerability and interdependency that cannot choose with whom we will live on this Earth. Butler's political ethics is twofold: on one hand, she examines significance of 'action'' the most significant vita activa in the public area, and 'plurality'' the condition-not only the necessary condition but the possible condition-for a political life suggested by Hannah Arendt in Human Condition; on the other hand, Butler reflects upon global precarity based on a diasporic precarious life in the social world towards freedom and equality. Unchosen cohabitation of plural humans on Earth, and global pervasion of precarity, that indicates "politically induced condition in which certain populations suffer from failing social and economic networks of support and become differentially exposed to injury, violence, and death," so called "differential distribution of precariousness," are practical possibilities of ethical and equal cohabitation of different ethnic groups in the social world. Ethical obligations or ethical demand to respond to others' suffering in distance and proximity originated from precarity politics, mentioned in Precarious Life, Parting Ways, and Frames of War, could be non-foundational joint of plural people living together globally. We should presume the 'reversibility' of distance and proximity in others' suffering, based on responsiveness and responsibility of others, if we want to stay attuned to the pain of others we never chose to live together. That is the significance of Butler's 'precarity politics' with 'ethical obligation' to accept 'unchosen plurality' of living population on Earth, and 'reversibility between of distance and proximity,' in her 'new plural and embodied body politics' or 'new corporeal ontology', through human primary vulnerability, fundamental interdependency, being exposed and responsive to suffering of others.

French 'Minima Sociaux's Scheme, Benefit Determination Rule and its Appreciation : A Study on Social Assistance in Europe (프랑스 사회적 미니멈(Minima sociaux)의 구조 및 급여 체계 : 유럽 공공 부조 제도의 한 연구)

  • Shim, Chang-Hack
    • Korean Journal of Social Welfare
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    • v.59 no.3
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    • pp.75-97
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    • 2007
  • The purpose of this article is to explore French 'minima sociaux', focusing its scheme, benefit determination rule and its level appreciation. First, on the its structure domain, French 'minima sociaux' presents the plural system in which there is eight categorical benefits and one general benefit. Il is the representation of the intention to guarantee minimum income for the dead zone people out of the social insurance application and also a historical product in different period, by different logic of benefits implementation. Second, comparing nine benefits based on the benefit determination rule, level of benefits for the poor without work ability is higher than one for the poor with work ability. Il represents one polarized perception toward for the poor according to have or not its work ability. Third, comparing level of 'minima sociaux' with relative poverty line, the level of the most 'minima sociaux' is placed under the poverty line. Nevertheless, it must not forget that 'minima sociaux' plays its role as the fundamental alternative for poverty alleviation, but not the only alternative. Fourth and finally, comparing with minimum income guarantee(SMIC in french), level of RMI benefit is estimated merely on the 50% of SMIC. We can consider that it is the result of the interaction of the complex factors, as the limited role of the state toward the minimum income guarantee for the RMI beneficiary and the intervention the logic of status instead of the logic of need, etc..

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Online WOM Communication of Crossmedia Storytelling (크로스미디어 스토리텔링의 온라인 구전 양상)

  • Seo, Seong-Eun
    • The Journal of the Korea Contents Association
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    • v.11 no.1
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    • pp.134-144
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    • 2011
  • Crossmedia Storytelling is receiving attention as a new style of description in the age of limitless competition and infinite fusion among media. Crossmedia Storytelling specifies a form of storytelling carried out through mixed usage of plural media, such as televisions, movies, and web services. It is different from OSMU strategy in that plays one source of contents according to the characteristics of various media while Crossmedia Storytelling demands users' active participation. Moreover, it is also slightly different from Transmedia Storytelling in the point that narratives of each media are not complete themselves and only through effectively combining plural media can the whole story fully enjoyed. This research aims to analyze how users move among media in terms of Crossmedia contents by examining cases of Swedish interactive drama series , from Australia, and from the United States. To do so, first, the paper looks into the principles of Crossmedia communication and examines that it is based on online word-of-mouth communication, such as viral marketing. As a result, the following was found in the cases of Crossmedia Storytelling: negative stories that arouse users' emotional reactions & users' participation are effective, and the set-up of Sneezer, which causes the knowledge gap, is very important. It was also found that users' participation was actively taking place through online WOM communication in Crossmedia Storytelling.

Director Yim Jin-Taek's Grounded Aesthetics of Community-based Theatre (임진택의 공동체 지향 연출론: 공동체적 세계관과 미학의 발현 -1970년대와 80년대 대학 공동체 마당굿 퍼포먼스 연출 시기에 초점을 맞추어-)

  • Lee, Gangim
    • Journal of Korean Theatre Studies Association
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    • no.48
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    • pp.289-332
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    • 2012
  • In this paper, based on the theory of performance studies and community-based theatre, I venture to explicate the socio-political significance of director Yim Jin-Taek's community-based performance called 'madanggut', which is heavily based on elements of indigenous culture. Yim's madanggut utilizes elements of indigenous cultures and searches for 'the Korean ethnic (arche)type' as 'the ideal Korean type' or 'genuine Korean-ness' for the reconstruction of 'the Korean ethnic community.' This paper interrogates the major task of Yim Jin-Taek's madanggut, which ideologically promulgates the idea of ethnocentric patriarchy supported by the traditional (mainly Confucianist) notion of 'community' - inquiring if this type of theatre can provide useful and practical prospects for imagining a more democratic and plural civilian society in Korea today, when the interaction of globalization, nationalism, regionalism, and localism simultaneously impact our everyday life and cultural identification. Regarding the recent global phenomenon of the resurgence of nationalism, I looked at madanggut's use of symbolic resources from the past for imaginative communal bonding as a nation. But, the claimed homogeneity of the national past by means of 'nation conflation' of different social groups is an illusionary conceptualization, and the national historiography silences memories of the marginalized groups and denies their histories. It is certain that in Korea nationalism has historically performed an important function during the colonization and democratization period. Nevertheless, as Yim's Nokdukkot realized, it cannot be overlooked that as a representative of 'the Korean ethnic community,' 'the protecting man/the sacrificial woman' is contradictory to the plural and lateral thinking of participatory democracy in community-building. It is time to think about a new political language that relates individuals to the community and nation. 'The ethnic type' cannot represent the whole nation and the members of the nation should be the examples of the community they belong to for a more democratic society. I have selected Yim's several community-based works mainly from the 1970s to the 1980s since the works provide grounding images, symbols, metaphors, and allegories pertinent to discussing how 'the Korean ethnic community' has been narrativized through the performances of madanggut during the turbulent epoch of globalization. I hope that this paper presents Yim's grounded aesthetics of community-based theatre with fully contoured critical views and ideas.

A Study of the Relations between the Profession and the State: Focusing on the Korean Oriental Medicine Doctors' Organization (전문직과 국가의 관계 -한국 한의사 조직을 중심으로-)

  • Eam Hyun Sup;Lee Hyun Ji;Shin Soon Shik
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.16 no.1
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    • pp.58-61
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    • 2002
  • The degree of doctors' autonomy is decided by the relations between the profession and the state. The exclusive right required by doctors is based on knowledge, but it is most often decided by the relations between the profession and the state. The critical factor affecting the status of the medical profession is the span of its control on medical related areas. Therefore, the status of doctors depends on the degree of institutionalization and the span of their control. The status of Korean Oriental Medicine doctors has been largely affected by the governments medical policies. The dramatic change of the status of Korean Oriental Medicine in modern Korea dearly shows the effects of medical policy on the status of a medical system. Under the plural medical system every medical group lobbies for more favorable medical policies. Korean Oriental Medicine doctors have secured an enhanced status in government and expanded the range of medical insurance coverage. Also, they have accomplished the standardization of knowledge in their efforts to expand it. These achievements are the most important aspects of the professionalization of Korean Oriental Medicine. Therefore, we can conclude that the conflicts between Korean Oriental Medicine doctors and government representatives have had significantly positive effects on the professionalization of Korean Oriental Medicine.

A Study on the Belief and the Architecture of Traditional Javanese House (자바전통주택의 관념체계와 건축적 특성에 관한 연구)

  • Kim, Do-Yeon;Oh, Hye-Kyung;Ju, Seo Ryeung
    • Korean Institute of Interior Design Journal
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    • v.22 no.6
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    • pp.199-211
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    • 2013
  • Indonesia is archipelago country and plural society which consist of diverse ethnic groups. This study select Java island and Java houses as a representative housing of Indonesia. The aim of this study is to present a comprehensive overview of traditional houses of Java in Indonesia by examining pre-existing literature. First, the Java House as a microcosm of the universe that shows universal and religious aspects. Furthermore, each building contains spiritual symbolism. These ideological aspects select the location and layout of the towns, villages and buildings, which create an order to the interior space. The space structure of Java housing is characterized by strong juxtaposition between east/west, front/back, public/private, male/female, and open space/ closed space. There is also a hierarchy of space, which were applied in floor level, height of space and lightness. The structure of the roof shows the best formativeness. Depending on the shape of the roof, the function of the building is shown, and also it represents the social rank and religious respect. Joglo's unique formativeness is an icon of the Java architect.

Multi-dimensional extrapolation on use of multi multi-layer neural networks

  • Oshige, Seisho;Aoyama, Tomoo;Nagashima, Umpei
    • 제어로봇시스템학회:학술대회논문집
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    • 2003.10a
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    • pp.156-161
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    • 2003
  • It is an interest problem to predict substance distributions in three-dimensional space. Recently, a research field as Geostatistics is advanced. It is a kind of inter- or extrapolation mathematically. Some useful means for the inter- and extrapolation are known, in which slide window method with neural networks is hopeful one. We propose multi-dimensional extrapolation using multi-layer neural networks and the slide-window method. The multi-dimensional extrapolation is not similar to one-dimension. It has plural algorithms. We researched line predictors and local-plain predictors I two-dimensional space. The both predictors are equivalent; however, in multi-dimensional extrapolation, it is very important to find the direction of predictions. Especially, since the slide window method requires information to predict the future in sampling data, if they are not ordered appropriately in the direction, the predictor cannot operate. We tested the extrapolation for typical two-dimensional functions, and found an excellent character of slide-window method based on local-plain. By using the method, we can extrapolate the function until twice-outer regions of the definitions.

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A Study on the Project of Empowering Young Farmers and Agricultural Personnel in Taiwan (대만의 농민 후계자 및 농업인력 양성계획 연구)

  • Kim, Jae-Ki
    • Journal of Agricultural Extension & Community Development
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    • v.6 no.1
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    • pp.43-54
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    • 1999
  • Taiwan has plural agricultural education system and has accelerated its social and economic growth through Agricultural Extension Education. This study has been carried out centering around the work plans which analyzed the project of cultivating young farmers supported by the Republic of China Government. Taiwan has promoted administrative and financial support systems with the government as the central figure in order to equip the efficient and continuous development system of agricultural human resources for securing agricultural skilled personnel, developing farmers' organizations and cultivating young farmers that can cope with the open world. The main training programs are for developing farmers' organizations and they are as follows. 1) The Agricultural Production and Marketing Group(APMG) 2) Expert Farming Training Program for Rural Youth 3) Agricultural Extension Service Worker Training Program 4) Rural Youth Development Program 5) School 4-H Club Activities for Student Development Program 6) International Rural Youth Exchange Program Development 7) Agricultural Extension Education Program for Minority People 8) Job Change Training Program for Rural People The training programs are organized for all the rural residents and students to develop their individual careers systematically and continuously, and they are very encouraging in whole development. Also they offer us many suggestions.

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