다공성 (Ca,Mg)_0.15Zr_0.7O_1.7 세라믹스의 제조 및 특성

김복희,김상희,최은실,Kim, Bok-Hee,Kim, Sang-Hee,Choi, Eun-Sil 한국결정성장학회 2011 한국결정성장학회지 Vol.21 No.2

다공성 $(Ca,Mg)_{0.15}Zr_{0.7}O_{1.7}$ 세라믹스를 제조하고 기공률 및 기계적 강도를 측정하여 SOFC 세라믹 지지체로서 응용 가능성을 조사하였다. 출발물질로 $ZrO(NO_3)_2{\cdot}2H_2O$를 선정하고 이를 이온 교환수에 용해하여 glycine을 첨가하여 glycine 연소법으로 $ZrO_2$ 분말을 합성하고 $800^{\circ}C$에서 하소하여 $ZrO_2$ 원으로 사용하였다. 합성한 $ZrO_2$ 분말, dolomite, 그리고 pore former로 carbon black을 혼합하고 $1200{\sim}1400^{\circ}C$로 소성하여 다공성 $(Ca,Mg)_{0.15}Zr_{0.7}O_{1.7}$ 세라믹스 소결체를 제조하였다. $(Ca,Mg)_{0.15}Zr_{0.7}O_{1.7}$ 세라믹스의 결정상은 단일상의 cubic상이었다. $1300^{\circ}C$ 에서 소성한 $(Ca,Mg)_{0.15}Zr_{0.7}O_{1.7}$ 세라믹 소결체는 carbon black의 양이 증가할수록 기공률이 32 %에서 55 %까지 증가하였으며 기계적 강도는 90 MPa로부터 30 MPa까지 감소하였다. [ $(Ca,Mg)_{0.15}Zr_{0.7}O_{1.7}$ ]ceramics was investigated for the application to SOFC ceramic supporter with high porosity and mechanical strength. $ZrO_2$ powder was prepared by combustion method with glycine using the solution of $ZrO(NO_3)_2{\cdot}2H_2O$ dissolved into deionized water and calcination at $800^{\circ}C$ Porous $(Ca,Mg)_{0.15}Zr_{0.7}O_{1.7}$ ceramics was prepared by sintering the mixture of prepared $ZrO_2$ powder, dolomite and carbon black at $1200{\sim}1400^{\circ}C$ for 1 h. The open porosity ofthe $(Ca,Mg)_{0.15}Zr_{0.7}O_{1.7}$ ceramics sintered at $1300^{\circ}C$ was over 30 % and increased linearly with the amount of carbon black. The crystal structure of $(Ca,Mg)_{0.15}Zr_{0.7}O_{1.7}$ ceramics consisted of single cubic phase. The open pore of this ceramics was connected continuously and distributed well on the whole. This ceramics sintered at $1300^{\circ}C$ showed the porosity from 32 to 55 % and mechanical strength from 90 MPa to 30 MPa with increasing the content of added carbon black.

광주지역 일부 대학생에서 식생활 요인과 스트레스 인지수준과의 상관관계

김복희,심방글,정은,Kim, Bok Hee,Shim, Bang Geul,Jeong, Eun 한국식품영양학회 2014 韓國食品營養學會誌 Vol.27 No.5

The purpose of this study was to estimate the relationships between dietary factors and the stress perception levels of College students. A survey was conducted in June, 2010, targeting 332 college students in Gwangju. General environmental factors, stress perception levels, dietary behaviors, and dietary action guide performance of the subjects were evaluated by questionnaire, and food intakes was determined by the 24-hour recall method. The results are summarized as follows.: The score of frequency experiencing was $45.1{\pm}16.9$ for male students, and $47.0{\pm}16.7$ for female students. The importance scores were $50.8{\pm}18.5$ for males, and $53.3{\pm}18.7$ for females. The total score for dietary action guide performance was $39.6{\pm}7.2$ for males and $40.6{\pm}6.5$ for females. Nutrient intake levels were evaluated based on dietary reference intake (DRI), revealing energy intakes to be 68.5% EER in males and 73.9% in females. The mean intakes of nutrient were 54.2% RI for calcium, 73.6% RI for riboflavin, and 51.2% RI for vitamin C but 203.6% AI for sodium, which indicates an imbalance in nutrient intake. Analysis of the correlations between stress perception levels and dietary factors, scholarship achievements, financial problems, future problems, value senses, and family relationships revealed significant correlations with general environment factors, dietary behaviors, Dietary action guide performance, and nutrient intakes (p<0.05). The higher the stress perception levels of the students, the higher the energy, coffee and alcohol intake, which predicts that appropriate stress control in college students will lead to better dietary habits. It is expected that the results above will be used as basic data for the development of proper nutrition education programs and stress control strategies.

광주지역 일부 저소득층 여자노인에서 지역사회 영양중재 프로그램 적용에 따른 식행동 변화 및 영양상태 개선 효과

김복희,양지숙,계승희,이윤나,Kim, Bok Hee,Yang, Ji-Suk,Kye, Seung-Hee,Lee, Yoonna 한국식품영양학회 2014 韓國食品營養學會誌 Vol.27 No.3

This study was conducted to measure the effect of a community-based nutritional intervention program on dietary behaviors and nutrient intakes of low-income elderly women in Korea. The subject of the study was a group of 88 elderly women using the free meal service in Dong-gu, Gwangju city in Korea. The study was carried out from April to July 2009, and the pretest, application of nutrition education, and post-test were applied in each stage. This community-based nutrition intervention program consisted of snack supplement and nutrition education provided three times a week and 36 times in total. The nutrition education was led by the nutritionists and professionals using various educational media. Snack supplement included were milk, soymilk, carrot juice, bread, yogurt, and bananas. The result of pretest showed that the nutrient intakes of the subjects were much below the Recommended Nutrient Intake (RNI) level of Dietary Reference Intake for Koreans. Comparison of the dietary behavior score and nutrient intakes before and after the nutritional intervention program indicated that the food behavior score increased from 3.1 to 5.6 (P<0.001) and intake of energy, protein, carbohydrate, thiamin, niacin, vitamin C, iron, and potassium of the subjects all increased significantly (P<0.05). Mean Adequacy Ratio (MAR) of their nutrient intakes was also improved from 0.53 to 0.64 (P<0.01). These results indicated that the nutrition intervention program conducted in this study was effective in improving dietary behavior and nutrient intakes of elderly women in local community.

$Li_{2}O-Al_{2}O_{3}-SiO_{2}$계 저팽창 결정화 유리의 특성

김복희,고정훈,남오정,강우진,이창훈,Kim, Bok-Hee,Ko, Jung-Hoon,Nam, O-Jung,Kang, Woo-Jin,Lee, Chang-Hoon 한국결정성장학회 2009 한국결정성장학회지 Vol.19 No.2

저열팽창계수를 갖는 재료를 개발하기 위하여 $Li_{2}O-Al_{2}O_{3}-SiO_{2}$계 glass-ceramics를 제조하고 그 특성을 조사하였다. 이 계의 유리를 $775^{\circ}C$에서 2시간 가열하여 핵생성시키고 $825{\sim}900^{\circ}C$로 가열하여 2시간 결정화하였다. 결정화 유리의 결정구조는 단일상의 $\beta$-quartz solid solution($Li_{x}Al_{x}Si_{1-x}O_{2}$)이었고, 열팽창계수는 $25{\sim}300^{\circ}C$에서 $4.40{\times}10^{-7}{\sim}1.33{\times}10^{-6}K^{-1}$를, 그리고 $25{\sim}800^{\circ}C$에서는 $1.56{\times}10^{-6}{\sim}2.53{\times}10^{-6}K^{-1}$를 보였으며 저온 영역의 열팽창율보다는 고온 영역의 열팽창율이 더 높은 값을 보였다. 이 계의 결정화 유리의 기계적 강도는 결정화 온도에 의존하지 않고 대체로 110 Mpa의 높은 값을 보였다. The glass-ceramic of the $Li_{2}O-Al_{2}O_{3}-SiO_{2}$ system was investigated to develop the low thermal expansion materials. The glass of this system was heat treated at $775^{\circ}C$ for 2 h for nucleation and subsequently at $825{\sim}900^{\circ}C$ for 2 h for crystallization. The crystal structure of the glass-ceramic of this system was a single phase of $\beta$-quartz solid solution($Li_{x}Al_{x}Si_{1-x}O_{2}$). The thermal expansion of the glass-ceramic showed $4.40{\times}10^{-7}{\sim}1.33{\times}10^{-6}K^{-1}$ between $25{\sim}300^{\circ}C$ and $1.56{\times}10^{-6}{\sim}2.53{\times}10^{-6}K^{-1}$ between $25{\sim}800^{\circ}C$, higher than lower temperature range. The mechanical strength remained almost same at around high 110 MPa with heating temperature changes.

고대 그리스의 운동경기와 희생제의

김복희 ( Bok Hee Kim ) 한국체육사학회 2010 체육사학회지 Vol.15 No.1

( 1 - X ) ZrO2-XC2O 계 세라믹스 미분말의 제조

김복희(Bok Hee Kim) 전북대학교 공학연구원 (구 전북대학교 공업기술연구소) 1992 工學硏究 Vol.23 No.-

고대 로마의 황제와 전차경기

김복희 ( Bok Hee Kim ) 한국체육사학회 2013 체육사학회지 Vol.18 No.1

이 연구는 당시 로마의 사회 현상을 파악하여 황제와 일반 대중에게 전차경기는 어떤 의미가 있었는지를 알아보고 황제들은 전차경기의 관중, 후원자로써 어떠한 태도를 보였는지, 전차경기의 시설과 프로그램은 어떻게 확대·발전시켰는지를 구체적으로 밝히고자 한다. 로마의 황제들은 시민들에게 전차경기의 신성하고 화려한 볼거리를 제공함으로써 불만을 해소시키고 황제 숭배 및 절대군주제를 강화하는 정치적 수단으로 활용하였다. 황제들은 전차경기를 통하여 정세나 민심을 판단하였고, 다양한 방법으로 경기를 후원하였다. 전차경기에 열광한 황제들은 키르쿠스 막시무스(Circus Maximus)의 관람석을 비롯한 많은 시설을 확장하고, 화려하고 웅장하게 장식하여 그들의 욕망을 결합시킨 대규모 경기장을 완성하였다. 이에 맞추어 경기 일수가 늘어나고 경기의 프로그램은 제국시대 초기 하루 12회에서 칼리굴라 40회, 네로 50회, 도미티아누스는 경기를 100회로 증가시켰다. 경기의 내용은 기병들의 모의전쟁 시범과 다양한 곡예를 제공하였으며 전차경기는 2두, 4두 경기가 대표적이었으며 마술경기도 추가되었다. 따라서 황제들은 대중을 지배하고 제국의 질서를 유지하기 위해서 전차경기를 지속적으로 발전시켰음을 잘 보여주고 있다. The purpose of this study was to review the emperor eager of chariot racing background in ancient Rome. In order to how to develop of chariot racing was facility and programme. Its relationship with the emperor, and the attitude of civilians were examined. The result of the study was as follows. The roman chariot race was a highly popular sports among the ancient which emperor worship. It was a very exciting game for both the emperors and the spectators. Furthermore the emperor was an absolute monarchy to use by chariot racing. Therefore the emperors were watching chariot race and given supporting for political reason. The emperors were established huge stadiums including seats of Circus Maximus. The numbers of games were twelve in early empire but gradually more games such as Caligula forty games, Nero fifty games, and Domitianus were hundred games in a day. Chariot race poses to maintain of order for public control by emperor.

고대 올림피아 제전경기의 종교적 특징

김복희 ( Bok Hee Kim ),오동섭 ( Dong Soub Oh ) 한국체육사학회 2005 체육사학회지 Vol.15 No.-

현대춤 작품에서 표현요소로서의 민족적 정서

김복희 ( Bok Hee Kim ) 대한무용학회 2010 대한무용학회논문집 Vol.65 No.-

This study aims to examine how national sentiment is presented as an expressional element in modern dance works. For this, I analyzed two dance works, Life Flower, Wind Flower III - Bride (2007) and The Cry of the Earth (2009), and explored the spiritual aspects of Korean modern dance that I have been pursuing since 1971. The two dance works included the strong sense of national sentiment as an expressional element. I discussed that putting national sentiment in Korean modern dance was only one method among many. Based on my philosophy, I insisted that showing the heterogeneous roots of the East and the West, rather than expressing the homogeneity of the East and the West, would be appropriate for Korean modern dance. I argued that in order to have the national sentiment as an expressional element, we would need to consider three issues such as dance theme, the use of symbols, and dance vocabulary as pure movement. First, drawing on my own empirical cases, I argued that the theme of dance was not specifically about Korean-ness, and if we could find any Western theme that corresponds to our sentiment, it would bring broader possibility of utilizing it. For instance, Garcia Lorca`s "The House of Alba" was the basis for my choreography "The House that the Sad Wind Touched." Second, for the use of symbols, it would be necessary to choose symbols that could represent Korean sentiment. Finally, for the dance vocabulary, I insisted that we would need to develop dance vocabulary that had our individuality. I acknowledge that the result of this study is not the only solution to expand the expressional boundary in creating dance and to differentiate our dance from the Western dance.

저소득층 청소년의 낙인감이 작업동맹의 매개효과를 통해 학교적응에 미치는 영향

김복희(Kim, Bok-Hee),백정림(Baek, Jeong-Lim) 경성대학교 사회과학연구소 2016 社會科學硏究 Vol.32 No.2

본 연구는 저소득층 청소년의 낙인감이 학교적응에 어떠한 영향을 미치며, 저소득층 청소년과 교육복지사와의 작업동맹이 이들 변수들 사이를 매개하는 효과가 있는지를 검증하는데 목적이 있다. 조사대상은 부산지역 교육복지 초․중학교에 재학 중인 교육복지 대상 학생 455명을 설문조사 한 자료를 활용하였으며, 구조방정식 모형으로 매개효과를 검증하였다. 연구의 주요결과로는 첫째, 저소득층 청소년의 낙인감은 학교적응에 부(-)의 영향을 미치는 것으로 나타났다(β=-.290, p<.001). 둘째, 저소득층 청소년의 낙인감은 교육복지사와 맺는 작업동맹에 부(-)의 영향을 미쳤다(β=-.748, p<.001). 셋째, 교육복지사와 저소득층 청소년이 맺는 작업동맹은 학교적응에 정(+)의 영향을 미쳤다(β=.415, p<.001). 넷째, 낙인감이 학교적응에 영향을 미치는데 있어서 작업동맹이 부분매개하는 효과가 있는 것으로 확인되었다(Z=-5.576, p<.001). 이러한 결과를 토대로 저소득층 청소년과 교육복지사의 작업동맹을 통해 학교적응을 효과적으로 지원하기 위한 실천적 방안을 제시하였다. This study has the purpose to verify the effect of stigma on school adjustment for youths from low-income families and the meditating effect by the working alliance between youths from low-income families and social worker on these variables. This study utilizes the survey data from 455 students currently enrolled at the elementary and middle schools at Pusan as the targets of education welfare. The meditating effects are verified by structural equation modelling. The underlying results have revealed the following: first, stigma negatively affects youths from low-income families on school adjustment(β=-.290, p<.001). Second, stigma negatively affects youths from low-income families on the working alliance with social workers(β=-.748, p<.001). Third, the working alliance between youths from low-income families and social workers positively affects school adjustment(β=.415, p<.001). Fourth, the working alliance is shown to partly mediate the effect of stigma on school adjustment(Z=-5.557, p<.001). Based on these results, this research suggested practical measures to effectively support the school adjustment of low-income youth through a working alliance with school education social workers.