Station Keeping Maneuver Planning Using COMS Flight Dynamic Software

김해연,이병선,황유라,신동석,김재훈,Kim, Hae-Yeon,Lee, Byoung-Sun,Hwang, Yoo-La,Shin, Dong-Suk,Kim, Jae-Hoon Korea Society of Satellite Technology 2007 한국위성정보통신학회논문지 Vol.2 No.2

태양과 달 그리고 지구의 비대칭 중력장에 의해 발생하는 다양한 섭동항은 정지궤도 위성의 위치를 지속적으로 변화시킨다. 따라서, 정지궤도 위성의 위치를 일정한 범위 내로 유지시키기 위해서는 궤도경사각과 승교점 적경을 조정하는 남북방향 위치유지와 이심률과 경도를 조정하는 동서방향 위치유지가 필요하다. 본 논문에서는 통신해양기상위성 비행역학 소프트웨어를 이용하여 통신해양기상위성의 위치유지 시뮬레이션을 수행하고 그 결과를 분석하였다. 통신해양기상위성은 경도 $128.2^{\circ}E$ 에서 위성을 ${\pm}0.05^{\circ}$ 범위 내에 유지시키기 위해 일주일 주기로 동서/남북방향 위치유지를 수행하며, 위성의 남쪽 패널에만 부착된 태양 전지판으로 부터 발생하는 자세오차를 줄이기 위해 하루 두 번 휠 오프로딩을 수행한다. 본 논문에서는 휠오프로딩을 고려한 위치유지 시뮬레이션을 수행하였고, 그 결과 통신해양기상위성 비행역학 소프트웨어를 이용하여 통신해양기상위성을 ${\pm}0.05^{\circ}$ 범위 내에서 안정적으로 유지시킬 수 있음을 확인하였다. Various perturbations by the sun, the moon and the earth itself cause a continuous change in nominal position of a geostationary satellite. In order to maintain the satellite within a required window, north-south station keeping for controlling inclination and right ascension of ascending node, and east-west station keeping for controlling eccentricity and longitude are required. In this paper, station keeping maneuver simulation for Communication, Ocean and Meteorological Satellite (COMS) was performed using COMS Flight Dynamics Software(FDS) and the results were analyzed. COMS performs weekly based east-west/north-south station keeping to maintain satellite within ${\pm}0.05^{\circ}$ at the nominal longitude of $128.2^{\circ}E$. In addition, COMS performs wheel off-loading maneuver twice a day to eliminate attitude error caused by one-solar wing in the south panel of the satellite. In this paper, station keeping maneuver considering wheel off-loading maneuver was performed and the results showed that COMS can be maintained well within ${\pm}0.05^{\circ}$ window using COMS FDS.

모의분석을 통한 OMS/MP 산출기법에 관한 연구

김해연,변재정,Kim, Hae-Yean,Byun, Jae-Jung 한국군사과학기술학회 2012 한국군사과학기술학회지 Vol.15 No.6

This study proposes an OMS/MP preparation methodology using a simulation method instead of a survey method. We applied our methodology to the next generation detection radar, providing reasonable peace- and war-time OMS/MP values. Based on these results, we propose the process to calculate RAM objective values. The previous survey method required to supplement its method since the method used data from a similar weapon system. In addition, the previous method didn't provide enough reliability for the future weapon system. Instead of using the previous survey method, we propose to use war game simulation, which provides a better OMS/MP values. Based on these results, we propose the logical consecutive process that prepares combat and simulation scenarios, peace- and war-time OMS/MP values and RAM objective values.

오페라 <La Serva Padrona> 무대의상의 현대적 재해석 - 로코코시대의 장식요소를 중심으로 -

김해연,박선경,이은정,Kim, Hae-Yeon,Park, Sun-Kyung,Lee, Eun-Jung 복식문화학회 2017 服飾文化硏究 Vol.25 No.4

Opera is the most comprehensive musical art. In recent years, contemporary opera worlds has seen a variety of attempts to reinterpret operas of the past in a modern light. This has resulted in a dramatic change in the production of musical style and stage art. The purpose of the study was to modernize and streamline opera costumes by extending the scope of existing stage costume design, through the reinterpretation and application of the decorative elements in the Middle Age of Rococo, such as ruffles, frills, shirring, embroidery, buttons, etc., in such a way as to effectively communicate the moods of an opera to a modern audience. The costumes of the Rococo period were reinterpreted in a modern way, with the following results. First, in this work, the male main character was played by a bass to express the image of an older, lazy, rich man. A key element in modernizing the stage costume was selection of the costume color in such a way as to visually represent the voice tones sung by the major characters in the opera. Second, the maid hat and aprons were decorated with frills by applying the curves of Rocaille decoration from the Rococo period symbolize the role of the maids. This represented the distinction between occupation according to class and status at that time, while also expressing the ideals of modern feminine beauty. This makes for more comfortably-worn costumes, and is economical for production expenses. In the future, the stage costume design for classical opera will need to be revised consideration of a modern viewpoint.

오존 및 감마선을 이용한 Bacillus subtilis spores 살균효율 및 재증식

김해연 ( Hae Yeon Kim ),이오미 ( O Mi Lee ),김진명 ( Jin Myoung Kim ),김태훈 ( Tae Hun Kim ),이면주 ( Myun Joo Lee ),유승호 ( Seung Ho Yu ) 한국공업화학회 2008 응용화학 Vol.12 No.2

야구 용어의 비유적 의미의 은유 이론적 분석

김해연(Kim, Haeyeon) 한국언어학회 2016 언어 Vol.41 No.2

Metaphor theory (MT) has been widely adopted in characterizing metaphorical uses of lexical words in texts. This research attempts to characterize baseball (BB) terms in journalistic discourse from the perspective of conceptual metaphor, exploring how literal meanings of BB terms are used metaphorically in Korean written discourse. To achieve this goal, this research first introduces some of the BB terms and their literal meanings. Second, this study discusses figurative meanings of BB terms used in journalistic discourse by examining mostly news media texts available on internet portals. Examination shows that BB terms are used to describe political activities and economic transactions in terms of playing baseball. Third, based on the examination of BB terms in media texts, this study attempts to analyze BB terms by applying MT in understanding the figurative meanings of the terms in the texts. Analysis shows that the figurative meanings of the BB terms are derived from the following metaphors: (i) POLITICAL ACTIVITIES ARE PLAYING BASEBALL (ii) POLITICAL PARTIES ARE BASEBALL TEAMS, (iii) (PRESIDENTIAL/PARLIAMENT) CANDIDATES ARE PLAYERS, (iv) MANAGING BUSINESS/TRANSACTIONS IS/ARE PLAYING BASEBALL, among others. In sum, this research shows that MT can be used as a useful tool for proper understanding and explanation of metaphorically extended meanings of BB terms in journalistic discourse.

신문 보도 기사에 나타나는 ‘풀이하다/되다’의 용법과 기능 분석

김해연 ( Kim Haeyeon ) 한국텍스트언어학회 2019 텍스트언어학 Vol.46 No.-

As a way of understanding comments on news events in media discourse, this research explores uses and functions of the phrase phwuli-hata/- toyta ‘paraphrase/be paraphrased’ in newspaper report texts from the perspectives of textlinguistics, critical discourse analysis, and heteroglossia. This study first provides a brief overview of report forms in media discourse. Second, it discusses the morphological properties and literal meanings of phwulitoyta ‘be pharaphrased/explained’, claiming the need to explore the functions of phwulitoyta in media discourse. Third, this study examines textual functions of phwuli-hata/- toyta in newspaper texts in terms of communicative needs, showing that it performs functions such as providing additional information and clarifying prior statements. Fourth, this research analyzes reporting constructions with phwuli-hata/-toyta in terms of heteroglossia, exploring how others’ voices are represented in newspaper articles. This research shows that the functions of phwuli-hata/-toyta in news report articles can be summarized as in the following: (i) providing additional information and explanation for the reported events, (ii) delivering reporters’ subjective comments on the reported events, (iii) providing explanation for the unexpected facts or discrepancy between facts and reports, (iv) displaying reporters’ attitudes such criticism or supports for the reported events, and so on. This study claims that newspaper article texts are mixtures of ‘objective’ reports and the reporter’s comments and others’ voices, represented in the choice of various phrases in constructing the texts. This research also shows that the notion heteroglossia is useful for understanding phwuli-hata/-toyta constructions in newspaper articles.

문학작품 대화문의 대화분석적 접근

김해연(Kim, Haeyeon) 경희대학교 언어연구소 2010 언어연구 Vol.27 No.3

In recent years, a great number of studies have been carried out in analyzing naturally occurring conversation by applying conversation analysis (CA). This research explores a possibility of applying CA to analysis of dialogues in literary works, mainly in novels and plays. To achieve this goal, this study provides a brief overview of major topics in CA in terms of a turn-taking system, sequence organization, adjacency pairs, and repair, among others. Based on the assumption that CA notions can be applied to an analysis of dialogues in plays, this study characterizes turn-taking, adjacency pairs, repair phenomena reflected in the dialogues among the participants in plays. It also shows properties of dialogues in novels in terms of major CA topics. Particularly, this study shows author‘s involvement in the development of a storyline when adjacency rules are not observed in the dialogues among the participants. Such an analysis shows that a CA perspective is useful in exploring the relationship between author‘s narration and participants‘ dialogues in the development of a story. Finally, this study shows that CA is a useful tool for analyzing dialogues in literary works, particularly plays and novels, to understand complicated structures of literary works.

문어 말뭉치에서의 "곧다"와 "바르다"의 의미와 사용에 대한 연구

김해연 ( Hae Yeon Kim ) 한국텍스트언어학회 2016 텍스트언어학 Vol.40 No.-

Synonymy has been one of the intriguing topics in lexical semantics. As a study of synonymy, this research explores and compares the meanings and uses of kotta and paluta ‘straight’ through an analysis of the Sejong Written Corpus. After a brief discussion of previous studies and dictionary definitions, this research shows the frequency rates and cooccurrence relations of kotta and paluta in the database. Examination shows that kotta occurs 71 times, and paluta 255 times, showing a great difference in the number of their occurrences in the database in spite of their similarity in meaning. Second, this research examines the cooccurrence relations of the two adjectives, showing that two thirds of the kotta tokens cooccur with concrete nouns, and that about three fourths of the paluta tokens with abstract nouns, showing a sharp contrast in the distribution. Based on the observation, this research explores metaphorically extended meanings of kotta and paluta in terms of the metaphors of MORALITY/ MANNERS/MIND... IS/ARE ENTITIES and MORALITY/INTEGRITY IS BEING STRAIGHT. Finally, this research shows that a corpus-linguistic approach and metaphor theory are useful tools for characterizing synonymous words and metaphorically extended meanings of synonymous lexical items.

문어 말뭉치에서의 ‘동물’과 ‘짐승’의 문자적 의미와 비유적 의미의 사용에 대한 분석

김해연(Kim, Hae Yeon) 담화·인지언어학회 2018 담화와 인지 Vol.25 No.3

Metaphor theory (MT) has been widely used to characterize literal vs. figurative meanings of lexical items. The purpose of this research is to explore literal vs. figurative meanings and uses of the lexical items tongmwul ‘animal’ and cimsung ‘beast’ in terms of lexical semantics, corpus linguistics, and metaphor theory through an analysis of a Korean written corpus. The examination of the database shows that the number of tokens of tongmwul amounts to 1.6 times more than that of cimsung. It also shows that the frequencies of the figurative use of tongmwul and cimsung amount to 2.1% and 18.0%, respectively. Based on this observation, this paper discusses literal vs. figurative meanings of tongmwul and cimsung, focusing on the figurative uses of those two lexical items. In the figurative use of tongmwul and cimsung, man is usually described as immoral, savage beings who are far below the standard level of reason, emotion, morality, etc. When considered in terms of MT, figurative uses of tongmwul and cimsung can be explained as metaphorically extended meanings, being derived from the metaphors of MEN ARE ANIMALS and UNETHICAL HUMAN BEINGS ARE ANIMALS. Finally, this research shows that a corpus-based analysis of real, authentic data is a useful method for understanding and explaining literal vs. figurative uses of any lexical items.

국어 문어 말뭉치에서의 "따뜻하다"의 의미와 용법에 대한 연구

김해연 ( Hae Yeon Kim ) 한국텍스트언어학회 2012 텍스트언어학 Vol.33 No.-

This research investigates the meanings and uses of ttattushata ``warm``, one of the adjectives used to signal speaker`s judgement about temperature, through an analysis of a Korean written corpus. First, this study examines the frequency of ttattushata and grammatical forms, showing the dominant attributive usage of ttattushata with the rate of 61.1%. Second, it shows the distribution of meanings of ttattushata by classifying types of nouns co-occurring with ttatushata in attributive and predicative positions. The meanings of ttattushata can be summarized as in the following: (i) denoting mild temperature of weather, concrete objects, body parts, etc. and (ii) showing friendly atmosphere, attitudes, behaviors, etc. Third, after examining the literal and extended meanings of ttattushata, this work characterizes abstract meanings of ttattushata in terms of metaphor theory, showing that the metaphorically extended meanings are derived from the conceptual metaphor that views abstract notions as temperature-transmitting concrete objects by matching concrete objects to abstract notions/entities. Finally, this research claims that a corpus-based approach is a useful tool in characterizing many closely related lexical items in written texts.