FSI를 이용한 모핑 플랩 날개의 정적 공탄성 해석

김종환,고승희,배재성,Kim, Jonghwan,Ko, Seughee,Bae, Jaesung,Hwang, Jaihyuk 항공우주시스템공학회 2012 항공우주시스템공학회지 Vol.6 No.4

The morphing flap wing has different structure unliked general wing structure. The actuated chord length of the morphing flap was more longer than conventional wing flap. In this reason, morphing flap wing structure was important to bending moment by aerodynamic lift force. In this study, through the fluid-structure interaction using computational fluid dynamics and structure finite element analysis to apply that the morphing flap wing's static aeroelastic stability analysis.

로마 사극에 나타난 셰익스피어의 민중관

김종환(Jonghwan Kim) 한국셰익스피어학회 2006 셰익스피어 비평 Vol.42 No.3

The aim of this study is to examine Shakespeare's political attitude towards the populace presented in Julius Caesar and Coriolanus. Rome is a real background to both plays, but the plays are involved with the contemporary economic problems of the plebeian in England and the contemporary political conflict between the plebeian and the patrician. Shakespeare's attitude towards the populace is rather different in each play. In Julius Caesar, a play in the middle period of his theatrical career, the plebian are presented in the negative way. In Coriolanus, his later play written in 1608, the plebeian are presented more favorably than the irrational, unstable, fickle, and unreliable populace as in Julius Caesar. Conservative critics have argued that Shakespeare was not so negative when he depicted the plebeian as an individual, but he presented negative point of view on the populace when he depicted them as a mass; they are contemptible because of their irrationality and fickleness. They regarded Shakespeare as a conservative playwright who accepted the contemporary social hierarchy and its anti-popular myth. However, this is not true. Because Shakespeare's attitude towards the plebeian was dynamic rather than static, and it was presented as different aspects in different plays. To investigate Shakespeare's portrayal of the populace and his political attitude towards the plebeian, I will discuss the relationship between the plebeian and the patrician, the plebian and the tribune, and the patrician and the tribune in Julius Caesar and Coriolanus with a special reference to the socio-political contexts related with the plebeian. Shakespeare's modification of the source material, Plutarch's Lives, will also be examined.

Stephen Greenblatt의 신역사주의(New Historicism) 비평

김종환(Kim Jonghwan) 한국셰익스피어학회 1993 셰익스피어 비평 Vol.23 No.-

글로스터의 인식 과정

김종환(Jonghwan Kim) 한국셰익스피어학회 2018 셰익스피어 비평 Vol.54 No.1

Shakespeare reveals the self-awareness of the blind Gloucester and the mad Lear in King Lear. The story of Gloucester and his two sons reflects that of Lear and his three daughters in the main plot of the play. Gloucester’s relationship with his sons reinforces the relationship between Lear and his daughters. The main plot and the subplot reflect each other in terms of theme and the process of recognition. The play presents the incongruity between appearance and reality through the betrayal of hypocritical children and the blindness of the fathers who are ignorant of their children’s reality. Gloucester is ignorant of both his own identity and Edmund’s identity at the beginning of the play. However, he recognizes himself, his sons, and the reality of his world through extreme suffering. The play illustrates the process of Gloucester’s gaining wisdom through suffering. Gloucester’s self-awareness is the starting point of wisdom and leads him to recognize truth. The play reveals paradoxically that the mad and the blind old fathers recognize their own status and reality at the end of the play. Gloucester shows insight into reality in the state of physical blindness as Lear does in the state of insanity. This paper discusses the process of Gloucester’s recognition in the subplot of the play and how it manifests Lear’s awareness in the main plot.

유체-구조 연성 해석 기법을 이용한 모핑 플랩 적용 날개의 정적 구조해석

김종환(Jonghwan Kim),고승희(Seughee Ko),배재성(Jaesung Bae),황재혁(Jaihyuk Hwang) 항공우주시스템공학회 2014 항공우주시스템공학회지 Vol.8 No.1

Morphing flap wing was required different structure unliked general wing structure. The actuated chord length of the morphing flap was more longer than conventional wing flap. In this reason, morphing flap wing structure was important to bending moment by aerodynamic lift force. In this study, through the fluid-structure interaction using computational fluid dynamics and structure finite element analysis to apply the morphing flap was performed wing structures static structure stability analysis.

PLM Services 기반의 협업 포털 시스템과 CAD/PDM 시스템 간의 정보 교환

김종환(Jonghwan. Kim),이주연(Juyeon. Lee),임수민(Soomin. Lim),노상도(Sangdo. Noh) 한국정밀공학회 2009 한국정밀공학회 학술발표대회 논문집 Vol.2009 No.6월

고세장비 날개 외부 장착물 배치에 따른 공탄성 특성 연구

김종환(Jonghwan Kim),황재혁(Jaihyuk Hwang),배재성(Jaesung Bae),노진호(Jinho Rho) 항공우주시스템공학회 2017 항공우주시스템공학회 학술대회 발표집 Vol.2017 No.4

모핑 플랩 구동부 및 날개 구조설계에 관한 연구

김종환(Jonghwan Kim),배재성(Jaesung Bae),황재혁(Jaihyuk Hwang) 항공우주시스템공학회 2016 항공우주시스템공학회 학술대회 발표집 Vol.2016 No.5

복합 자질 정보를 이용한 통계적 한국어 채팅 문장 생성

김종환(JongHwan Kim),장두성(Du-Seong Chang),김학수(Harksoo Kim) 한국인지과학회 2009 인지과학 Vol.20 No.4

채팅 시스템은 인간이 사용하는 언어를 이용하여 인간과 컴퓨터 간의 대화를 시뮬레이션하는 프로그램이다. 본 논문에서는 핵심어와 화행을 입력으로 받아 자연스러운 채팅 문장을 생성하는 통계 모델을 제안한다. 제안 모델은 먼저 핵심어를 포함한 어절을 말뭉치에서 선택하고, 해당 어절의 주위에 있는 어절의 출현정보와 구문 정보를 이용하여 후보 문장들을 생성한다. 그리고 화행에 기초한 언어 모델, 어절간 공기 정보, 각 어절의 구문 정보를 이용하여 생성된 후보 문장중 하나를 선택한다. 실험 결과에 따르면 제안 모델은 단순한 언어 모델에 기반한 기존의 모델보다 좋은 86.2%의 적합 문장 생성률을 보였다. A chatting system is a computer program that simulates conversations between a human and a computer using natural language. In this paper, we propose a statistical model to generate natural chatting sentences when keywords and speech acts are input. The proposed model first finds Eojeols (Korean spacing units) including input keywords from a corpus, and generate sentence candidates by using appearance information and syntactic information of Eojeols surrounding the found Eojeols. Then, the proposed model selects one among the sentence candidates by using a language model based on speech act information, co-occurrence information between Eojeols, and syntactic information of each Eojeol. In the experiment, the proposed model showed the better correct sentence generation rate of 86.2% than a previous conventional model based on a simple language model.

사뮤엘 존슨(Samuel Johnson)의 셰익스피어 비평

김종환(Jonghwan Kim) 한국셰익스피어학회 2000 셰익스피어 비평 Vol.36 No.4

Samuel Johnson has been considered as one of the best critics of Shakespeare. He was the representative critic in the neoclassical period who had a balanced critical point of view. In the preface of his edition of Shakespeare, published in 1765, Johnson wrote: "Nothing can please many, and please long, but just representation of general nature. . . . Shakespeare is the poet of nature; the poet that holds up to his readers a faithful mirror of manners and of life." This is Johnson's praise of Shakespeare as the poet of nature, that is the poet of human nature. So to read Shakespeare's works is to read the book of life as it is. Johnson believed that each of Shakespeare's characters is not an individual but the entire species and that he represents "general properties and large appearances." Ben Jonson, in 1623, praised Shakespeare saying that "he was not of an age, but for all time." For Addison, Shakespeare was an inimitable poet born with "all the seeds of poetry." Nevertheless, the following praise of Johnson is the most memorable paragraph dedicated to Shakespeare. Immortal Shakespeare drew "each change of many-color'd life," "exhausted worlds, and then imagin'd new .... panting Time toil'd after him vain." Johnson praised Shakespeare as the poet of nature who represented "a faithful mirror of manners and of life." However, he never forgot to criticize Shakespeare's defects. To teach truths through delights had been the classical ideal since Horace emphasized it. It was also the basic principle of Johnson's criticism, so that Johnson criticized Shakespeare's lack of moral instruction: "He sacrifices virtue to convenience, and so much more careful to please than to instruct, that he seems to write without any moral purpose." This was the primary defect of Shakespeare that Johnson argued. Johnson criticized several other defects of Shakespeare: his plots, loosely and carelessly formed; his catastrophe, improbably produced or imperfectly represented; geographical and chronological improprieties; his narrations which are pompous and wearisome; his inflation of trivial sentiments and vulgar ideas; his fascination of the quibble and pun. Samuel Johnson's dislike of Shakespeare's lack of poetic justice and excessive uses of pun and quibble reflected the taste of the neoclassical period. His view of Shakespeare was limited by his neoclassical principles, and his prejudices were shared with other critics in the period of neoclassicism. Nevertheless, his broad mind was not confined within the Aristotelian concept of the three unities, which was the most basic rule for the dramatic criticism in the period. Johnson defended Shakespeare's disregard of the unities of time and place, pointing out the negative aspects of the esthetic of delusion. He also defended Shakespeare's "mingled drama," and his defence was based on his belief that the tragic-comedy was able to exhibit the real state of a real world and to fulfill the purpose of literature, to instruct by pleasing. He compared the works of regular writers to "a garden," accurately formed and scented with flowers, and the irregular plays of Shakespeare to "a forest, in which oaks extend their branches and pines tower in the air." This is the praise for the varieties and comprehensions represented in Shakespeare's works. Dryden praised Shakespeare as a poet who had "the largest and most comprehensive soul." Likewise, Johnson can be remembered as a critic who had "the most comprehensive soul" in the field of Shakespearean criticism, because he supported us to have a comprehensive understanding of Shakespeare's merits as well as his faults.