EFDC모형을 이용한 새만금호 내 해수유통량에 따른 오염물질 혼합 변화 모의

정희영,류인구,정세웅,Jeong, Hee-Young,Ryu, In-Gu,Chung, Se-Woong 한국농공학회 2009 한국농공학회논문집 Vol.51 No.6

The EFDC (Environmental Fluid Dynamics Code), a numerical model for simulating three-dimensional (3D) flow, transport, and biogeochemical processes in surface water systems including rivers, reservoirs, and estuaries, was applied to assess the effect of sea water and fresh water exchange rates ($Q_e$) on the mixing characteristics of a conservative pollutant (tracer) induced from upstreams and salinity in Saemangeum Lake, Korea. The lake has been closed by a 33 km estuary embankment since last April of 2006, and now seawater enters the lake partially through two sluice gates (Sinsi and Garyuk), which is driving the changes of hydrodynamic and water quality properties of the lake. The EFDC was constructed and calibrated with surveyed bathymetry data and field data including water level, temperature, and salinity in 2008. The model showed good agreement with the field data and adequately replicated the spatial and temporal variations of the variables. The validated model was applied to simulated the tracer and salinity with two different gate operation scenarios: RUN-1 and RUN-2. RUN-1 is the case of real operation condition ($Q_e=25,000,000\;m^3$) of 2008, while RUN-2 assumed full open of Sinsi gate to increase $Q_e$ by $120,000,000\;m^3$. Statistical analysis of the simulation results indicate that mixing characteristics of pollutants from upstream can be significantly affected by the amount of $Q_e$.

조사야 확인용 film을 이용한 자궁 경부암 환자의 조사야 정확성 연구

정희영,권영호,정덕양,황웅구,김유현,Jung Hee-Young,Kweon Young-Ho,Jeong Deok-Yang,Whang Woong-Ku,Kim You-Hyun 대한방사선치료학회 1995 大韓放射線治療技術學會誌 Vol.7 No.1

1. Purpose : 30 patients with uterine cervical cancer who had been treated at Department of radiation Oncology of Korea university Hospital from June, 1, 1994. to December. 31, 1994. were analyzed to the radiation field accuracy using verification films. 2. Methods and Materials : 30 patients were divided by 6 groups, 5 patients respectively : Group (1) : Standard physique, supine not-fixed Group (2) : Standard physique, supine fixed Group (3) : Obesity physique, supine, not-fixed Group (4) : Obesity physique, supine, not-fixed Group (5) : Obesity physique, prone, not-fixed Group (6) : Obesity physique, prone, fixed All groups were taken verification fimls during the whole treatment period, and it compared with simulation films and portal fimls, 3. Results : This results suggest that all patients should be immovilized and especially obesity physique patients should be treated by prone position in order to reduce radiation field discrepancy. In addition, this results should help to prescribe appropriate safty margins for patients simulation.

Carrier Complex Power Series를 이용한 K-대역 위성 TWTA용 반사형 다이오드 구조의 전치왜곡 선형화기

정희영,정용채,염인복,Jeong Hee-Young,Jeong Yong-Chae,Yom In-Bok 한국전자파학회 2005 한국전자파학회논문지 Vol.16 No.6

본 논문은 진행파관 증폭기의 비선형성을 줄이기 위해 새로운 전치 왜곡 방법을 제안하였다. 진행파관 증폭기의 비선형 전달 특성은 carrier complex power series를 이용하여 해석하였고, 이를 선형화하기 위한 전치 왜곡 선형화기의 전달 특성을 inverse complex power series로 해석하였다. Schottky 다이오드와 전송 선로 종단에 부착된 부하 저항을 반사형 구조로 만듦으로 전치 왜곡기의 비선형 왜곡 특성을 얻을 수 있었다. 제안된 선형화기를 적용하여 K-대역용 진행파관 증폭기의 AM-to-AM 및 AM-to-PM 특성 을 각각 -5.825 dB과 $-37.321^{\circ}$에서 0.786 dB과 $6.742^{\circ}$로 개선시켰다. In this paper, a new predistortion method to reduce nonlinearity or a traveling wave tube amplifiers(IWTAs) is proposed. Nonlinear transfer characteristics of TWTA are analyzed using carrier complex power series. Inverse carrier complex power series or a predistortion linearizer to linearizer TWTA are also proposed. The inverse nonlinear distortion characteristics of predistorter can be realized with reflective structure that is composed of Schottky diode and resistive-terminated transmission line. The AM-to-AM and the AM-to-PM characteristics for TWTA by proposed predistortive linearizer on K-band were improved from -5.825 dB and -37.321^{\circ} to 0.786 dB and 6.742^{\circ}, respectively.

헤어샵 고객의 체험방해 요인에 관한 질적 연구

정희영 ( Hee Young Jeong ) 한국미용학회 2008 한국미용학회지 Vol.14 No.1

The objectives of this thesis is to find out disturbance factors in hair shop customer experience thru qualitative study method and to give insights in developing positive elements in hair shop customer experience. The results of the study are summarized as followings as; The disturbance factors in hair shop customer experience are classified largely as environmental factors, systemic factors, factors by others` acts. Environmental factors included weather, hygienic conditions, atmosphere of the hair shop, accessibility and etc. Systemic disturbance factors included skill, attitudes of service crews, price and service fee and etc. Disturbance factors by others` acts are mentioned such as interference by others, cell phone calls and etc. I expect that in-depth analysis on customers` emotions and psychological conditions based on these facts found in this study help for drawing up effective and strategic customer relations and management plan to provide better customer experience and to cope with disturbance factors reflecting cultural elements.

여대생의 외모향상추구행동에 관한 질적 연구

정희영(Hee Young Jeong) 한국인체예술학회 2011 한국인체미용예술학회지 Vol.12 No.1

The purpose of this research is to closely examine a mental state related to appearance with the target of college women who experienced a behavior for seeking appearance improvement, such as cosmetic surgery and weight control, etc. The present research has introduced a qualitative research method in order to overcome limitations of the qualitative research and grasp various aspects of persons for seeking appearance improvement. As a research result of a behavior for seeking appearance improvement, it could be known that because the seeker's life attitude is positively changed and the seeker can do active self-expression, there is a positive aspect that is helpful in improvement of life quality. However, it could be known that the increase of the interest in beauty according to change of a beauty standard also becomes a reason of another stress by further strengthening of desire for seeking appearance improvement.

이상근의 가곡에 나타난 가사 그리기와 음악적 매개변수들의 관계 연구: 연가곡집 《가을 저녁의 시》를 중심으로

정희영 ( Hee-young Jeong ) 이상근기념사업회 2015 이상근 연구 Vol.1 No.-

This study aims to analyze the parameters Sang-geun Lee used to shape the lyrics of his song cycles and to discuss his compositional characteristics and its musical implications. Composer Sang-geun Lee, composed numerous works in various genres, such aschoral music, opera, piano music, chamber music, and orchestral music. He is considered one of the important figures in the 20th century Western music in Korea. He was also active as a conductor, critic, and educator. His songs are acclaimed as masterworks for its remarkable creativity and artistry, and the song genre clearly reveals his musical world. Sang-geun Lee’s writing, ‘A study of Korean songs’ (1955) shows his keen interest in song genre. In his writing, he strongly stressed the importance of choosing a poem when it comes to composing a song, by saying, “There is no need to imitate Schubert who added a beautiful music for such a poor (worthless) poem (In other words, the music is too good for the poem).” After composing his early songs based on lyrics from Koryo Gayo and Minyosi, Sang-geun Lee chose poets who shared the time and space with him, to name a few, poet Chun-Su Kim (1922-2004), Jang-Hyun Ahn (1928-2003), and Chi-Hwan Yoo (1908-1967). Using their poems as lyrics, Sang-geun Lee tried to communicate with experiences during turbulent times in Korea, from emancipation (or liberation), war to dictatorship. His songs include four short compositions “Haegok”, “If you”, “Dongdong”, and “Badaya”, and four song cycles, Songs dedicated to Thee, The Poem of an Autumn Evening, Aga I, and Aga II. For his song cycle Poems of an Autumn Evening, he used a modern compositional technique that he did not use for his earlier works. Because of this modern compositional technique, this cycle holds a prominent place in his song writing development. Since he did not see the lyrics as a simple tool delivering the meaning of melody, but as a companion that leads and creates the overall musical atmosphere, he concentrated on bringing out the characteristics of the lyricsmusically. In other words, he applied the technique of text painting to achieve the musical shape of the lyrics (poems) using musical parameters, such as structure, scale, harmony and so on. His song cycle The Poem of an Autumn Evening consists of eight songs. He used Chun-Su Kim’s early collections of poems written during 1950s, four poems from Cloud and Rose (29 poems) and Swamp (21 poems). After a thorough analysis of The Poem of an Autumn Evening, I categorized musical parameters and its characteristics that I discovered in Sang-geun Lee’s song cycle, Poems on an Autumn Evening into three parts. First, Sang-geun Lee used various musical parameters as musical tools in each section of the work to match the structure of poem to the musical form, which results in the overall unity and diversity at the same time. In other words, he used scales in various ways in each section of the work including a major and minor scale, a pentatonic scale and a scale that he created. He consistently used a specific intro, bridge, and a group of chords at the beginning and the end of each section of the work. To express the musical climax of the work, he always used the highest range of pitches with articulations and dynamics such as an accent, tenuto, crescendo, forte, fortis-simo, and so forth. When he tried to emphasize a specific poetic text, he repeated the text smoothly by using a rhythmic extension or repetition without distracting the unity between the overall structure of music and the poem. Second, he used a technique that either contrasts or match the lyrics and its musical atmosphere in order to express the implications of the lyrics. For this, he first considered the direction of the melody, whether it is moving downward or in contrary motion of the two parts, song and accompaniment. Then he used a unique scale that creates the right musical color to describe the atmosphere or mixed two scales. He also applied a technique of changing a central tone or tempo. He used these techniques to represent the contrasting psychological state of the poetic self. Lastly, he succeeded in describing a specific poetic text vividly by using musical ornamentation in song part, a homophonic texture in which song and piano part move in rhythmic unison, and so on. Poems on an Autumn Evening is one of the representative modern song cycles in Korea, because the composer, Sang-geun Lee, achieved a musical shape of poems using traditional techniques such as a three-part-structure, scale of major and minor, functional harmonic cadence as well as modern compositional techniques such as a church mode, pentatonic scale, frequent change of tempo, chromatic melody, and dissonant chord. This helps us to understand why Sang-geun Lee holds a prominent position as a representative Korean composer as well as his contribution to the development of modern art song in Korea.

하브루타 기반 일본어과 학습자중심 수업 연구

정희영(Jeong Hee-Young) 대한일어일문학회 2021 일어일문학 Vol.92 No.-

본 연구는 일본어 전공 교과 가운데서도 지식 정보 중심 교과에서의 교수자와 학습자의 역할 변화에 초점을 두고 적극적 학습자 활동을 위하여 ‘일본 문화’와 ‘일본어 문법 I’ 두 강좌의 한 학기 온라인 수업 전체에 각각 하브루타를 도입하였다. 즉, 학습자와 교수자의 역할 변화의 필요성 및 목적인 듣기만 하는 학습자가 아닌 적극적, 능동적 학습자로의 변화를 함께 요구하고 있기에 안내자, 촉진자로서의 교수자의 변화 이상으로 질문하고 토의·토론을 통해 깊이 이해하는 성장 지향적 학습자로의 변화를 함께 목표로 하였다. 그 결과 하브루타 기반 일본어과 학습자중심 수업은 특히, S대학교 1학년 일본문화 수업에서 t값 –5,260, 유의확률 .000으로 학습자들은 하브루타 기반 학습자중심 수업에 대해 만족하고 있는 것으로 분석되었다. 그 외 하브루타 기반 수업에서 (1) 발표 능력 향상에 도움을 준 것은 수업전 개인 사전 조사 활동(학습지)으로 나타났다. (2) 하브루타 기반 수업에서 가장 좋았던 부분은 짝토론 & 모두토론으로 학습자들은 하브루타 모형에 의한 토의·토론을 좋아했다. (3)하브루타 기반 수업에서 가자 어려웠던 부분으로 수업전 개인 사전 조사 활동(학습지)를 들고 있는데 이는 하브루타 활동을 위한 사전 준비의 중요성을 잘 인식하고 있는 결과로 분석된다. (4) 학습자들은 하브루타의 6가지 원리 가운데 경청 재확인, 반문을 가장 자주 사용하는 것으로 분석되었다. (5)하브루타 수업은 2학년 학습자들에게 있어 자기 생각을 잘 표현할 수 있는 능동적 학습자의 모습을 보이고 있다. (6) 하브루타수업모형에서 가장 유용했던 모형은 질문중심, 침구가르치기, 문제만들기 모형이었다. This study introduces Havruta into the two courses of ‘Japanese Culture’ and ‘Japanese Grammar I’ through online classes for active learner activities, focusing on the change in the roles of instructors and learners in the knowledge information-oriented subject. In other words, since the necessity of the changing roles of learners and instructors requires that learners are to be active, the goal of this study is how to change students into a growth-oriented learners who ask questions and understand deeply through discussion beyond guide instructors. As a result, it was analyzed that the learners of learner-centered classes in the Habruta-based Japanese language department were particularly satisfied with the Habruta-based learner-centered classes, with at value of -5,260 and a significance probability of .000 in Japanese culture class of the first grade at S University. Through Habruta-based classes, (1)it was found that personal pre-class research activities (worksheets) helped improve presentation skills. (2)The best part of the Haveruta-based class was the paired and all-to-one discussion, and the learners liked the discussion based on the Habruta model. (3)The difficult part of the Habruta-based class is the individual pre-study activity (worksheet) before class. (4)It was analyzed that learners most frequently used listening reaffirmation and counter-question among the six principles of Havruta. (5)Havruta classes are working effectively to make students become active learners who can express their thoughts well for second-grade learners. (6)The most useful models in the Havruta class model were question-oriented, friend teaching, and problem-making models.

수정아인슈타인 방법을 이용한 새만금호 유입 유사량 추청

정희영 ( Hee Young Jeong ),정세웅 ( Se Woong Chung ),이흥수 ( Heung Soo Lee ),류인구 ( In Gu Ryu ),맹승진 ( Seung Jin Maeng ) 한국물환경학회 2009 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2009 No.-

SDGs에 대한 일본어 전공 학부생의 지식, 태도, 행동 분석

정희영 ( Jeong Hee-young ) 한국일어일문학회 2023 日語日文學硏究 Vol.124 No.0

研究者は、教育課程で提示している世界市民意識の涵養という目的と日本語教育との関連性を貢献点とし、今後の中等教育を担う教師志望者を対象に、SDGsを融合した日本語教育教科目新設をのための基礎研究を行った。それは、SDGsに対する日本語専攻学部生の知識、態度、行動の相関関係分析を通じて、日本語教育においてSDGsを活用するための方法を模索しようとしたものである。 研究結果から、知識が行動に直接的影響を及ぼさないことがわかったが、知識が高いほど態度に正的影響を及ぼし、また肯定的態度が高いほど実践的行動力が高いということが明らかになった。この結果から、日本語関連専攻学生のSDGsに対する行動実践レベル、特に貧困終息、奉仕、ミーニングアウトなどに関連する実践力を高めるためには、SDGsに関する知識を高めることが主要な変数であることが分かった。 This study tried to find a way to utilize SDGs in Japanese language education by analyzing the correlation between the knowledge, attitudes, and behaviors of undergraduate students majoring in the Japanese language about SDGs. This study also examined the relationship and contribution between the purpose of fostering global citizenship in the curriculum and Japanese language education to pre-service teachers in charge of secondary education as a basic study for the establishment of Japanese education subject fusing SDGs, As a result of the study, although knowledge did not directly affect behavior, the more knowledge students have, the more positive attitude they affect, and the higher positive attitude they have, the higher practical action they do. It was found that raising knowledge of SDGs is a major variable to increase the level of behavioral practice especially related to ending poverty, service, and belief consumption on SDGs by students majoring in Japanese.

MS Messenger를 사용한 일본어과 의사소통중심 수업에 대한 학습자 실태 분석

정희영(Jeong Hee-Young) 대한일어일문학회 2009 일어일문학 Vol.43 No.-