DC방전에 대한 전류 및 전압 조건에서 1차원 전산모사

김희정,김형용,권득철,윤남식 충북대학교 컴퓨터정보통신 연구소 2006 컴퓨터정보통신연구 Vol.14 No.1

여러 그룹들의 연구 결과로서 DC 방전 전산모사를 위한 여러 가지 수치해석적 방법들이 보고되어 왔다. 대부분의 방법들은 전극에 전압을 경계 조건으로 가정하고 전류를 구하는 방법인데, 때로는 전류값을 조건으로 주고 전극의 전압이 결정되는 방법이 필요한 경우도 있다. 본 연구에서는 전류값이 조건으로 주어진 경우에 전극의 전압이 결정되는 방법을 적용했으며, 1차원 전산모사를 통해 두 가지 방법에 의한 결과를 비교하였다. Various numerical simulation algorithms for simulating DC discharge were reported from many research groups. Most of reported methods uses terminal electrode voltage as a boundary condition to obtain current density. However, in some case, we need to obtain terminal voltage from boundary condition of current. In this paper, the method which obtain voltage under current condition is applied, and we compared the results of two methods through one-dimensional simulations.

「別乾坤」을 중심으로 본 신여성의 복장에 관한 연구

김희정 服飾文化學會 2004 服飾文化硏究 Vol.12 No.2

The purpose of this study is to examine aspects of education, social activity, and sense of values in new women, categorizing the clothing habits into hair style, new modes and accessories on the basis of those, and to find out the influences of new women's attirement on clothing habit of general women, centering of 「Beol Geon Gon」 which made its first appearance in November 1926 and issued till June, 1934. First, new education became good opportunity to face and adopt new style of clothes. The school uniform of western style worn under the education system operated missionaries and clothes of returning students from studying abroad became a chance for general people to meet western clothes. Second, various style of western clothing was shown by enlargement of social activity area of new women. In the educational world and active careers such as doctor, journalist, women's libber, convenient clothing was required. The appearance of airwoman and driver showed trends that women's clothing was changing similar to men's clothing. Third, even general women started to adopt western clothes not to be old-fashioned as being threatened and weakened by the vision about marriage and love among new women, and participated in the trends.

유리 B 스플라인 곡선을 이용한 블록 효과 감소

김지홍,김희정 정보과학연구소부산외국어대학교 1999 情報科學論集 Vol.1 No.-

In this paper, a novel block effect reduction method using a rational B-spline is proposed. The proposed approach adopts a rational open uniform B-spline curve that used to produce a smooth curve through a set of control points. Applying the rational open uniform B-spline to the reduction of block effect, pixels on the block boundary are set to control points and the shape of curve is settled adaptively along the weight value. The simulation results show that the proposed method has excellent performance for all pattern of block effect in comparisons with that of conventional approaches.

西洋服飾史에 나타난 양말 變遷에 關한 硏究 : Focus on Western Costume

李順洪,金希貞 성신여자대학교 생활문화연구소 1996 生活文化硏究 Vol.10 No.-

의학 및 생명과학 전공 대학생의 줄기세포에 대한 지식과 태도

김희정 이화여자대학교 생명의료법연구소 2009 생명윤리정책연구 Vol.3 No.3

This article reports on a study designed to assess the knowledge and attitudes toward stem cells among medical and life science students. The subjects consisted of 261 medical students and 264 life science students. The instrument used was a self-reporting Likert-type questionnaire consisting of 56 assumptions related to stem cells. In the knowledge level toward stem cell, knowledge score of all subjects was 56.43±}18.29, medical student’s knowledge score(62.53±}17.53) was higher than life science student's that(50.39±}16.98)(p=.00). The score of some items needs further improvement. In the attitude score toward stem cell, there was no difference between two groups. But, it showed different responses by topic, and in particular adult stem cell research and embryonic stem cell. According to the sources of information, experience of stem cell education, religion, knowledge level was differ. And attitude score was differ according to the religion, participation level of religious activity, intention of ovum donation. Furthermore, there is an need to develop well-designed and integrating stem cell education program that could providing not only delivery of knowledge but also promotion of bioethical decision making for students.

기피 시설물 입지 의사결정에서 반응조화설 검증과 해결책 제시

김희정,이영애 이화여자대학교 사회과학연구소 2005 2005 PMORP WORKSHOP : 위험지각의 심리적 메카니즘 Vol.2005 No.

본 연구는 사람들이 부정적으로 인식하는 혐오시설물 입지와 관련된 문제에서 의사결정의 중요기제인 반응조화설이 적용 여부를 검증하고, 전망 이론의 참조-의존선택 모형에 근거하여 혐오시설물의 유치에 대한 찬성을 증가시킬 효과적인 방법으로 해결책 제시를 제안하였다. 연구 1에서 찬성질문과 반대질문에 상관없이 손실을 피하는 방향으로 일관되게 반대하는 경향을 보여 반응조화설이 적용되지 않았고, 해결책이 있는 경우 거의 모든 시설에서 더 많은 보상이 있는 경우보다 유의미하게 찬성이 증가하였다. 연구 2는 단점의 개수를 증가시킨 상황에서 해결책의 효과를 검증해 보았다. 연구 1과 거의 동일한 결과를 얻어 효과적인 방법임이 재검증되었다. 본 연구의 결과를 손실이 큰 문제와 관련된 의사결정 과정에서 전망 이론의 참조-의존 선택 모형과 관련하여 논의하였다. We examined the response compatibility hypothesis in decision making concerning the location of the facilities which are recognized negatively by the people, and suggested a solution to lead the approval of negative facilities based on the model of referent-dependent choice. In study 1, people tended to oppose consistently in order to avoid the loss, whether the question type was of approval or of opposition. This result didn't support the response compatibility hypothesis. Compared to the condition of intensified merits, there was significant increase of the approval in the condition of the weakened demerits. Study 2 was to examine the effect of the solution in the condition of more demerits. The result was consistent with that of study 1. We discussed the findings in decision making of large loss problems, considering the referent-dependent choice model of the prospect theory.

수학동화를 활용한 저널쓰기 활동이 유아의 수학능력과 언어표현력에 미치는 영향

김희정,이경민 이화여자대학교 교과교육연구소 2016 교과교육학연구 Vol.20 No.6

본 연구의 목적은 수학동화를 활용한 저널쓰기 활동이 유아의 수학능력과 언어표현력에 미치는 영향을 알아보는 것이다. 이를 위해 만 5세 유아 50명(실험집단 25명, 비교집단 25명)을 연구대상으로 선정하였다. 실험집단에는 12주 동안 12회에 걸쳐 실험집단은 수학 개념이 포함된 동화책을 함께 보고, 생각나누기, 저널 쓰기, 공유하기 과정으로 진행하는 수학동화를 활용한 저널쓰기활동을 실시하였고 비교집단은 실험집단과 같은 수학동화만을 들려주고 저널쓰기는 실시하지 않았다. 수집된 자료는 공변량 분석을 통해 수학능력과 언어표현력 향상에 대해 실험집단과 비교집단의 차이가 있는지를 알아보았다. 연구결과 첫째, 수학동화를 활용한 저널쓰기활동은 유아의 수학능력 증진에 긍정적인 효과가 있었으며 하위변인인 대수, 수와 연산, 기하, 측정 모두에서 유의한 차이를 나타내었다. 둘째, 수학동화를 활용한 저널쓰기활동은 유아의 언어표현력 증진에 긍정적인 효과가 있었으며 하위변인 중 내용의 일치도와 단어 수에서 유의미한 차이를 나타내었다. 이상의 연구 결과를 통해 수학동화를 활용한 저널쓰기 활동은 유아의 수학능력과 언어표현력 향상에 효과가 있었음을 알 수 있다. The purpose of this study is to analyze the effects of journal writing using mathematics picture books on children’s mathematical ability and language expression. A total of 50 five year old children(25 children in experimental group and 25 children in comparative group) enrolled in two kindergartens participated in this study. The experiment was conducted once a week for twelve weeks. The experimental group participated in journal writing using mathematics picture books. Its process was as follows: reading mathematical picture books, sharing ideas, writing journal, and sharing journals. In the comparative group, reading mathematics picture books was conducted but journal writing was not. The ANCOVA was used to analyze the data. The results of this study is summarized as follows. First, the effects of journal writing using mathematics picture books on children’s mathematical ability was statistically meaningful. There were meaningful differences on children’s mathematical ability such as algebra, number and operation, geometry, and measurement. Second, the effects of journal writing using mathematics picture books on children’s language expression was statistically meaningful. There were meaningful differences on children’s language expression such as correspondence of contents and number of words. In conclusion, it is revealed that journal writing using mathematics picture books positively affects children’s mathematical ability and language expression.

조선시대 이후 산수화 양식사 연구 : 碧川의 寫景山水畵 樣式을 中心으로

김희정 全北史學會 2000 전북사학 Vol.23 No.-

퇴원한 정신질환자가 지각한 사회적 지지와 정신건강상태에 관한 연구

김희정 대한간호학회정신간호학회 1992 정신간호학회지 Vol.1 No.-

This study was designed to identify the relationship between perceived social support and the mental health status of persons receiving psychiatric care as out-patients. The purpose was to contribute to the theoretical understanding of the relationship between these two concepts and eventually to the enhancement of theoretically directed nursing care. The subjects for this study were 54 patients receiving treatment for mental illness in an out-patient clinic or out-patient rehabilitation program at one of three general hospitals, a private clinic, or a social welfare institute. The data were collected from sept. 2 to 20, 1991. Perceived social support was measured by the Social Support Scale developed by Bak, Ji-Won. A questionnare developed by Derogatis, et al(1976) and modified by lee(1986) was used to measure mental health status. The data were analyzed by desciptive statistics and t-test, ANOVA, and pearson coorelation coefficients, using an S.P.S.S. program. The results of this study can be summerized as follows : 1. The mean perceived social support was 2.52 in a possible range of 0 to 4, and the major source of social support was the mother(83.3%). The major type of support was emotional(44.7%), and the frequency of contact with the supportive person ranged from once a week to once a week to once a month. 2. The mean mental health status was 0.9456 in possible range of 0 to 4. The severity of the subscales ranged down in the following order : obscession, depression, somatization, phobic anxiety, anxiety, hostility, paranoid ideation, interpersonal sensitivity, and psychosis. 3. The relationship between preceived social support and mental health status was not significant(r=-0.2124, p<.05), but there were relationship between certain subscales of the independent and dependent variables. Variables related to appraisal support were the total mental health status(r=-0.2756, p<.05), hostility(r=-0.2305, p<.05), interpersonal sensitivity(r=0.2546, p<.05), and psychosis(r=-0.3034, p<.05). Psychosis was related to emotional support(r=-0.2332, p<.05) and to total social support(r=-0.2300, p<.05). For this sample, some subscales dimensions of social support may have and affect on some aspects of mental health status. Future research of these conceptual relationships is essential to the development of theoretical nursing to give direction to the planning of scientifically sound nursing care.

레진 계열 근관봉함재 Adseal의 세포독성에 관한 연구

김희정,백승호,이우철,박한수,배광식 大韓齒科保存學會 2004 Restorative Dentistry & Endodontics Vol.29 No.6

The properties of ideal root canal sealers include the ability of sealing the total root canal system and no toxic effects to periradicular tissues. Cytotoxicity test using cell culture is a common screening method for evaluation of the biocompatibility of root canal sealers. The purpose of this study was to investigate the cytotoxic effect of newly developed resin-based sealer (Adseal 1, 2, and 3) comparing with those commercial resin-based sealers (AH26 and AH Plus), ZOE-based sealers (Tubliseal EWT, Pulp Canal Sealer EWT) and calcium hydroxide based sealer (Sealapex). An indirect contact test of cytotoxicity by agar diffusion was performed according to the international standard ISO 10993-5. L929 fibroblast cells were incubated at 37℃ in humidified 5% CO₂-containing air atmosphere. The freshly mixed test materials were inserted into glass rings of internal diameter 5 ㎜ and height 5 ㎜ placed on the agar. After the 24 hrs incubation period, the decolorization zones around the test materials were assessed using an inverted microscope with a calibrated screen. A Decolorization Index was determined for each specimen. Adseal 1, 2, and 3 did not exert any cytotoxic effects, whereas AH26, AH Plus, Tubliseal EWT, Pulp Canal Sealer EWT, and Sealapex produced mild cytotoxicity.