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.

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 $Q_e$.

‘재일코리안 한국계 민족학교의 학교문화 특성에 관한 연구’에 대한 반론을 통한 민족학교 이해

정희영(Jeong Hee Young) 대한일어일문학회 2018 일어일문학 Vol.78 No.-

Not only the Korea-Japan Treaty in 1965 signed in Korea-Japan Conference from 1951 to 1965 but also poor understanding of Korean government have made lots of public data widely distorted and spreaded. These surroundings have caused ethnic schools in Japan not to be researched properly and have made their sense of existence lower than that of chosun schools in Japan. As a result, the recent some studies have caused the researchers and people not to have proper views. The purpose of this study is to carry on argument against the paper: A Study on the Characteristic of School Culture of Korean-Japanese (2015), to correct the distorted data and to understand ethnic schools in Japan truly. Since liberation from Japanese colony, ethnic schools in Japan has been influenced and treated unfairly by the division of Korea. Ideological confrontation such the Korea-Japan Treaty also has caused people not to see ethnic schools correctly. In the era of 70 years of Korea division, we sincerely have to research the education of ethnic schools with introspection.

미용전공 대학생의 자기효능감이 진로성숙도에 미치는 영향

정희영 ( Hee Young Jeong ),박옥련 ( Ok Lyun Park ) 한국미용학회 2009 한국미용학회지 Vol.15 No.4

This study analyzed the effect of self efficacy in college students majored in beauty art on the career maturity, and whether there were differences in self efficacy according to existence or inexistence regarding certificate of qualifications, participating experience in vocational training competition and award one in the competition. As a result in analyzing the effect of self efficacy on the career maturity, self efficacy was appeared to influence the career maturity. Self-confidence factor among self efficacies was appeared to influence most in the career maturity, followed self-control sense of effectiveness. The preference factor in the degree of difficulty of assignment showed as influencing in the career maturity. Students who had acquired certificate of qualifications showed high degree in self efficacy as a result of analyzing the differences whether to acquire certificate of qualifications. As a result of analyzing the differences in self efficacy according to existence or inexistence in participating experiences at vocational training competition, the students having experiences in the competition showed high degree in self efficacy. Self efficacy of students having award experiences at the vocational training competition appeared high as a result of analyzing self efficacy differences whether to acquire award at the competition.

황/카본 복합체를 이용한 리튬황전지의 전기화학적 특성

정희영 ( Hee-young Jeong ),김은미 ( En Mei Jin ),정상문 ( Sang Mun Jeong ) 충북대학교 산업과학기술연구소 2016 산업과학기술연구 논문집 Vol.30 No.1

Morphologically different carbons, such as multi-walled carbon nanotube (CNT), platy structured graphene nanosheet (GNS), and spherical carbon (SC) have been employed to prepare the sulfur/carbon (S/C) composite to wrap the sulfur particles, and their performances as a cathode for lithium-sulfur (Li-S) battery have been discussed. The S/GNS composite can provide a flexible paper structure to capture sulfur particles, which results in the enhanced electrochemical properties. The S/GNS exhibits superior performance with a high discharge capacity of 748.4 mAh/g at the first cycle and 726.6 mAh/g after 30 cycles and a good cycle stability of 97.1 % based on the performance from 1 to 30 cycles. In addition, the discharge capacities of the S/CNT and S/CS are 692.5 and 671.6 mAh/g at the first cycle, and the cycle stabilities are 95.1 and 76.6%, respectively.

2009개정 교육과정에 따른 일본어 성취기준과 CEFR, JF 스탠더드와의 비교연구

정희영(Jeong, Hee-Young) 대한일어일문학회 2014 일어일문학 Vol.61 No.-

This study compared the achievement standard of Japanese based on the 2009 revised curriculum with the relevance of CEFR and JF standard. To summarize the comparison results, the standard of achievement of the JapaneseⅠ are very similar to the activity categories of CEFR and JF standard. The topics of JF standard were compared with the cultural contents of JapaneseⅠ. As a result, among the 15 topics the students in the A1, A2 level have studied the 10 topics of cultural contents except for ④living and life, ⑤ work and occupation, ⑦ health, ⑪ relationships with people, ⑮ scientific technology, which are so difficult to express. Based on the results, I’ve come to the conclusion that the students who have completed JapaneseⅠcourses at high school in Korea normally were the A1 level on average, especially they attained the A2 level in listening and reading. In this study, Ⅰsuggest that for the articulation of secondary education and higher education through CEFR, JF standard, ⓐthe development of the ‘self-assessment for earners’, ⓑ‘the specific evaluation methods’ according to the JapaneseⅠachievement standard, ⓒ‘Portfolio’ development, and ⓓ‘the field research’ on actual articulation for higher education in college of the high school students in the A1 or A2 level are needed.

CBT에서 소규모 수험자 집단에 대한 IRT 적용

정희영(Hee Young Jeong),김석우(Suk Woo Kim),윤애선(Ae Sun Yoon) 한국교육평가학회 2004 교육평가연구 Vol.17 No.1

The management and improvement of item quality is one of the main issues in the field of testing, regardless of the medium, paper or computer. IRT was estimated to be one of the most suitable evaluation methods, in order to obtain invariable information on each item. Previous studies have been focused, however, on the application of IRT to a large number of testees. This paper concentrates on the application of IRT to CBT with small testee groups. In this study, we suggested the procedures and models of was to suggest a guideline about the application of IRT to small testee groups for item quality management of CBT. According to the suggested application procedures and models of IRT, this study was conducted on the basis of real data, which are the test results of 127 test sheets contained in the CBT item bank of PE subjects of P University in 2001 and 2002. As the result of this study, we could conclude that it is possible to apply IRT to the tests that satisfy the assumption of unidimensionality and that are confirmed to be suitable after the assessment of model-data fit, even if the sample numbers are small. 검사와 관련한 중요한 논쟁 가운데 하나는 검사지를 구성하고 있는 문항의 질 관리 및 개선의 문제이다. 본 연구는 소규모 수험자 표본을 갖는 CBT의 문항 질 관리를 위한 IRT 적용 가이드라인 제안을 목적으로 하고 있다. 연구 목적을 달성하기 위하여 CBT에서 문항 질 관리를 위한 소규모 수험자 집단에 대한 IRT 적용에 대한 절차 및 모형을 제안하였다. 제안된 절차 및 모형에 따라 P대학교 PE 교과목의 CBT 문제은행의 실제 자료를 이용하여, 실증적 연구를 수행하였다. 이상의 연구를 통해 소규모 수험자 집단에 대한 IRT 적용 절차 및 모형을 구현하였고 그 결과 40문항 선택형 검사지에 평균 300명 전후의 표본인 경우 3-모수 로지스틱 모형이 적용 가능함을 알 수 있었다.

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.

일본어 작문 수업에 도입한 번역전략 -영화 「기생충」의 관용구를 중심으로-

정희영(Jeong, Hee-Young) 대한일어일문학회 2021 일어일문학 Vol.89 No.-

The fundamental problem in Japanese writing class is that the challenge for student activity-oriented classes must be well organized in the process of B1 level learners in translating Korean language into Japanese. Although a sentence looks very simple, it is necessary to understand the nature of the message in Korean, and when it is translated into Japanese, the nuance of the message in Japanese will be fully connected to the Japanese people. Therefore it is necessary to do research in terms of "translation strategy". Thus this study can induce "learning motivation" for B1 level learners as an effective alternative to process-oriented and learner activity-centered classes, as well as clarify various relevant contexts with more details. This study discusses Japanese writing teaching and learning methods along with case analysis of “Parasite” by using Baker"s idiom-level translation strategies. As a textbook, “Parasite” with the Japanese subtitle was translated by a professional translator. As a result, the introduction of the translation strategy can help enrich learner activity-centered classes in the process of translating Korean into Japanese for Japanese writing, especially for B1 level adult learners. In addition, it can be expected that learners can develop logical, critical, diffuse, and creative thinking skills and learn more about Japanese language culture on the basis of discussion-oriented classes through collaboration and communication.