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안건상,정현희,이현구,Ahn, Kun-Sang,Jeong, Hyun-Hee,Lee, Hyun Koo 대한자원환경지질학회 1993 자원환경지질 Vol.26 No.4
The Janggun mine area is occupied by the Proterzoic and the Paleozoic meta-pelites, which are intruded by the Jurassic Chunyang granite. The metamorphic terrain is divided into four zones of progressive metamorphism on the basis of mineral assemblages. The zones are chlorite zone, staurolite zone, andalusite zone, sillimanite zone ascending order. Boundary lines between the zones resemble outline of the Chunyang granite mass. Isograd reactions are chlorite+chloritoid+muscovite=staurolite+biotite+quartz+water, staurolite+chlorite+muscovite+quartz=andalusite+biotite+water, and staurolite+muscovite+quartz=andalusite+biotite+garnet+water between the chlorite zone and the staurolite zone, the staurolite zone and the andalusite zone, and the andalusite zone and the sillimanite zone, repectively. They are univariant reactions in KFMASH component system. Metamorphic conditions estimated from garnet-biotite geothermometers and phase equlibria are $530^{\circ}C$ and lower than 4 kb.
양액이온 농도 차이가 오이의 생육과 수량에 미치는 영향
권병선(Byung-Sun Kwon),정현희(Hyeon-Hee Jeong),신동영(Dong-Yong Shin),김학진(Hak-Jin Kim),임준택(June-Taeg Lim),현규환(Kyu-Hwan Hyun),신정식(Jeong-Sik Shin) 한국자원식물학회 2003 한국자원식물학회지 Vol.16 No.3
본 연구는 양액재배 오이의 생장과 수량에 나쁜 영향을 주지 않는 적정 양액 농도를 구명하기 위해서 양액의 이온 농도를 달리하였다. Yamazaki의 오이 처방을 기본으로 하여 1/4, 1/2, 3/4, 1, 3/2, 2 배농도를 상이하게 처리하여 생장 특성, 수량 및 질소 함량을 비교하고자 수행하였고 그 결과를 요약하면 다음과 같다. 1. 생육 시기별 초장과 엽수의 증가속도는 저 농도 구인 1/2배 농도에서 가장 빠른 증가속도를 보였다. 2. 양액의 이온농도 차이에 따른 오이의 생육 형질은 유의적인 생장의 차이가 인정되지 않았으며, 생육 시기별 초장, 경장과 엽면적은 1/2배 농도구에서 수치상으로 가장 높은 값을 보였다. 3. 양액의 이온농도 차이에 따른 오이의 과실수량은 유의적인 차이가 인정되지 않았으며 주수에서는 고농도구인 2배 농도가 86.00, 86.75로 가장 높은 값을 보였고, 과실수는 1/4배 농도와 표준 농도에서 가장 낮은 74.25, 85.25를 보였으나 수량에서는 저 농도인 1/2배 농도와 3/4배 농도가 가장 높은 22.60, 22.07kg을 보였다. 4. 질소함량은 유의적인 차이가 인정되지 않았으며, l/2배 농도에서 대체적으로 높은 함량을 보였다. 5. 양액의 이온농도 차이에 따라 정식후 36일 조사 시기의 모든 생육형질과 수량 특성에서 수치상으로 높은 값을 보인 1/2배 농도에서의 상관관계는 초장과 경장은 고도로 유의한 정의 상관관계를, 초장과 엽면적에서는 유의한 정의 상관관계를 나타냈고, 주수와 과실수는 고도로 유의한 정의 상관관계를, 과실수와 수량은 유의한 정 의 상관을 나타냈다. This study was carried out to investigate the optimum ionic strength of nutrient solution were treated with a quarter, a half, three quarters, standard, one and half, and double ionic strength of balanced nutrient solution of Yamazaki solution recommended for cucumber plants. Plant height and number of loaves of growing period were rapidly increased in 1/2 ionic strength of nutrient solution. Growth characteristics of cucumber plant as affected by the different ionic strength of nutrient solution were not significant differences, however, in the growing period, plant height, stem length and leaf area were highest in 1/2 ionic strength of nutrient solution. Fruit yield of cucumber plant as affected by the different ionic strength of nutrient solution was not significant differences, however, fruit yield was highest in 1/2 ionic strength of the lowering ionic strength of nutrient solution. Nitrogen concentration was not significant differences, however, it was high corcentration in 1/2 ionic strength of nutrient solution. Growth and yield characteristic of cucumber as affected by 1/2 ionic strength of nutrient solution at 36 days transplanting analyzed correlation cofficient. Plant height showed positive correlated with number of plant and positive correlated with yield.
어린 두 자녀를 둔 3교대 간호사의 양육 갈등 경험: 현상학적 연구
김증임 ( Kim Jeung-im ),염정원 ( Yeom Jeong Won ),박선경 ( Park Sun-kyung ),정현희 ( Jeong Hyun-hee ),민엄주 ( Min Uhm-joo ),박선화 ( Park Sun Hwa ),이정미 ( Lee Jung-mi ),염영선 ( Yeom Young-sun ) 여성건강간호학회 2018 여성건강간호학회지 Vol.24 No.3
Purpose: To understand the essentials of rearing conflict experience by three shift nurses in advanced general hospitals. Methods: The design was a qualitative research of phenomenology. Participants were 7 shift nurses working in advanced general hospitals who were rearing young children. Data were collected individually through in-depth interview on their life experiences. Data were analyzed by Colaizzi’s phenomenological methodology. Results: Eighteen themes were drawn from 256 meaningful experiences and these themes were integrated to six theme clusters. The most influencing themes were ‘Regret that I cannot satisfy even the slightest wish’, ‘Fail to care for kids’, and ‘Mutual feeling to care giver between appreciation and inconvenience’. Other themes were as follows: ‘Body and mind are broken’, ‘The need for a three-shift system to support nurses who are rearing children’, ‘Doing my best for work and child rearing’. Conclusion: The nature of three-shift nurses working in advanced hospital and caring kids is explained as ‘lives with conflict’ between work and home. This study suggests it is necessary to establish a 24-hour care center for 3-shift nurses to keep working while rearing their children.
PI 관측기를 이용한 MDPS 시스템의 모델 기준 제어
김인혁(In Hyuk Kim),김규하(Kyu Ha Kim),정현희(Hyun Hee Jeong),서정훈(Jeong Hoon Seo) 한국자동차공학회 2018 한국자동차공학회 학술대회 및 전시회 Vol.2018 No.11
Various control performances such as assist torque generation, vibration suppression, providing road surface information, returnability, and damping are required in MDPS (Motor Driven Power Steering) system. For this reason, many kinds of control methods are being studied. This paper proposes a PI (Proportional Integral) observer based controller. The proposed controller consists of PI observer, MDPS reference model, and integral state feedback control including reaction force compensation. The PI observer is designed to estimate the state of the system, the driver’s torque, and the rack reaction force, and then, the reference model is designed to have the desired steering feel. The estimated driver torque is used for the reference model to generate the position command. The motor torque to actuate the MDPS system consists of rack reaction force compensation and position control. This paper shows the simulation results to describe the performance of the proposed control method.
성별 및 학교 급별에 따른 청소년의 인간관계, 스트레스, 우울과 자살생각 간의 구조적 관계
우채영(Chae Young Woo),박아청(Ah Chung Park),정현희(Hyun Hee Jeong) 한국교육심리학회 2010 敎育心理硏究 Vol.24 No.1
본 연구는 청소년이 상호작용하는 부모, 교사, 또래와의 인간관계와 스트레스, 우울, 자살생각 간의 구조적 관계를 탐색하고, 이러한 관계 구조가 성별 및 중·고등학생 집단에 따라 어떠한 차이를 나타내는지 다중집단분석을 통하여 검토하고자 하였다. 연구 결과, 첫째, 부모, 또래와의 부정적인 인간관계는 스트레스와 우울, 자살생각에 각각 유의한 영향을 주었다. 또한 스트레스는 우울에, 우울은 자살생각에 유의한 영향을 주었으며, 스트레스는 우울을 매개로 자살생각에 유의한 영향을 주었다. 둘째, 성별에 따라 집단 간 차이를 분석한 결과, 남학생의 경우 교사와의 부정적 관계가 스트레스와 자살생각에 유의한 영향을 미치는 것으로 나타났고, 여학생의 경우 부모와의 부정적 관계가 스트레스, 자살생각에, 또래 관계는 우울과 자살생각에, 스트레스는 우울에, 우울은 자살생각에 유의한 영향을 주는 것으로 나타났다. 그리고 중·고등학생에 따라 집단 간 차이를 분석한 결과, 중학생의 경우 부모와의 부정적 관계가 스트레스에, 또래관계가 우울에 유의한 영향을 미치며, 고등학생의 경우 부모, 또래와의 부정적 관계가 자살생각에, 우울이 자살생각에 유의한 영향을 주는 것으로 나타났다. 이러한 연구결과를 바탕으로 이론적 함의를 논하고, 연구의 한계 및 향후 연구방향을 제시하였다. This study attempted to research the structural relationship among relations with parents and peers adolescents recognize, stress, depression and suicidal ideation and to review what differences does the relationship structure show according to genders and groups of middle school and high school, that is moderating effects among groups by multi-group analysis. As a result of research, first, negative relations with parents and peers adolescents recognize had a significant relationship with stress, depression and suicidal ideation. Stress had a significant influence on depression, and depression had a significant effect on suicidal ideation. Second, in the result of analyzing the difference between groups of gender, while negative relation with a teacher in boy students showed a significant effect on stress and suicidal ideation, in case of girl students, negative relation between parents and offspring had a decisive effect on stress and suicidal ideation, and negative peer relation had a decisive effect on depression and suicidal ideation. In the result of analyzing the difference between school levels, negative relation between parents and offspring in middle schools had a significant difference in stress, and negative peer relation presented a significant difference in depression. For high school students, negative relations with parents-offspring and peer had a significant difference in suicidal ideation, and depression presented a significant difference in suicidal ideation. Based on these research results, theoretical implication was discussed and the limit of this study and the way next research goes were showed.