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최재천,이영자,김소희,최수영,최희주,정성욱,박흥재,김우성 한국환경과학회 2005 한국환경과학회지 Vol.14 No.4
A simple and sensitive analytical method based on RP-HPLC with UV detector(225 nm) and mobile phases using 0.1% phosphoric acid and acetonitrile was developed for simultaneous determination of quinclorac, bentazone, 2,4-D, bensulfuron-methyl, dymuron, capropamide, pencycuron, ethofenprox. This method was resulted in recovery of 78~ 96% with RSD 3.3~7.5%. LODs 0.12~0.84 and LOQs 0.34~1.20 ㎎/L. Calibration curves were linear with r of 0.9995~ 0.9999.
프로토콜 분석을 통한 창의적 디자인 전략으로서의 은유와 유추
최한희(Choi, Han_Hee),주서령(Ju, Seo Ryeung),김미정(Kim, Mi Jeong) 한국실내디자인학회 2013 한국실내디자인학회논문집 Vol.22 No.1
The aim of this research is to explore the potential of analogy and metaphor as design strategies for supporting the creative design thinking. For the empirical research on analogical and metaphoric process in designing, we conducted design experiments that consist of three different conditions of given items as stimulation for design inspiration: baseline, surrealist paintings, and housing design collections. The results were analyzed using a protocol analysis in order to obtain more systmatic interpretation of the design processes and strategies. As a result, it was noted that students are more apt to read visual information rather than semantic information in the given items. Instead of the representation of their senses or feelings from the paintings, they visualized the analogical images of the paintings for the design representation. However, analogical and metaphoric thinking derived from the given items seem change a designer’s perspective, thus bring a novel interpretation on design problems, and eventually more creative and meaningful design ideas. An extended research using one-semester training and observation of the design studio process is introduced as a follow-up study for this paper. This research will investigate the long-term effect of the analogy and metaphor on the design thinking.
정현희(Hyean Hee Jeong),최경순(Kyoung Soon Choi) 한국아동학회 1992 아동학회지 Vol.13 No.1
The purposes of this study are to investigate (1) the father`s child-rearing behavior perceived by children in relation to children`s sex, family type and mother`s job. (2) children`s prosocial moral judgement as related to children`s sex, family type, and mother`s job, and (3) the effect of fathers child-rearing behavior on children`s prosocial moral judgement. The subjects were 432 5th-6th grade elementary school children in Pusan. For the measurement of father`s child-rearing behavior, this researcher developed a father`s child-rearing behavior questionnaire based on Choi`s (1991) questionnaire. For the children`s prosocial moral judgement, the 4 prosocial moral dilemma by Eisenberg-Berg was used. The major findings were as follows. No significant results were found in relation to father`s child-rearing behavior and child`s sex, family type, and mother`s work status. Children`s prosocial behavior was not related to any of the above variables. Significant relationships were found between father`s child-rearing behavior and children`s prosocial moral judgement.
혈액 투석 환자에서 중심정맥 협착에 대한 스텐트 삽입술 : Wallstent Placement
임대승,노상필,이유선,정승현,김보영,이정우,강정아,김정희,이민수,정준용,최시완,정진옥,성인환,이강욱,신영태 충남대학교 의과대학 의학연구소 2002 충남의대잡지 Vol.29 No.1
Stenosis of central vein is a common complication arising after percutaneous subclavian vein catheter insertion performed for temporary vascular access in chronic renal failure patients undergoing hemodialysis. There are several treatment methods for the condition like percutaneous angioplasty(PTA), stent insertion, and surgery, but recent trend is toward PTA and stents. Among the patients diagnosed with chronic renal failure from March 1993 to May 2002 and undergoing hemodialysis through AV fistula, the 14 Patients in whom central vein stenosis arose were selected for the study. A total of 28 percutaneous interventions(5 PTA and 23 stent placement) were performed, and restenosis rate and the time taken till the restenosis in de novo lesions and instant lesions were compared. All 28 cases were operated successfully. The 14 cases that received both anigioplasty and stent placement initially. (de novo lesion : 14 cases), Among the 10 cases with de novo lesion that followed up more than 1 year, 3 cases are currently undergoing hemodialysis without restenosis, and the remaining 7 cases have recurred stenosis with the mean time to restenosis of 10.9 months. In the 7 cases in whom stenosis recurred, 11 interventions were done(instent lesion: 11 cases). 4 of these were using only ballon angioplasty with 100% restenosis rate and the mean time of 3 months until restenosis. The remaining 7 cases were using both balloon angioplasty and stent placement, also with 100% restenosis rate but with the mean time of 12 months until restenosis, which was later than the group receiving only balloon angioplasty. In treating the patients with central vein stenosis, stent placement seems to be more advantageous over PTA in terms of restenosis rate and the mean duration of patency. In the case of instent lesion, inserting the stent for the second time after stenosis recurred lengthened the duration of patency compared to performing balloon angioplasty alone.
아버지의 양육참여와 유아의 역활수용능력 및 친사회적 행동과의 관계
정현희,최경순 동의대학교 생활과학연구소 1997 生活科學論集 Vol.1 No.-
The purpose of this study was to answer the following questions. (1) Is there any relationship between father's child-rearing behaviors and children's role-taking, between father's child-rearing behaviors and children's prosocial behavior? (2) Is there any relationship between children's role-taking and children's prosocial behavior? (3) Is there any differences in father's child-rearing behaviors, children's role-taking and children's prosocial behavior in relation to children's sex, SES, and mother's job? (4) What are the most important predictor variables which influence on children's role-taking? (5) What are the most important predictor variables which influence on children's prosocial behavior? The subjects of this study were 72boys and 70 girls attending the nursery schools and their mothers in Busan. For the measurement of father's child-rearing behaviors, Choi's(1991) questionnare were used and for children's role-taking children were interviewed with the Flavell's apple-dog stories children's prosocial behavior was measured by amount of candies to share with classmates. The results were as follows : (1) There were significant correlation between father's child-rearing behaviors and children's role-taking, between father's child-rearing behaviors and children's prosocial behavior. (2) Children's role-taking was positively related to children's prosocial behavior. (3) There were significant difference in father's child-rearing behaviors, children's role-taking and children's prosocial behavior according to children's sex, SES, and mother's job. (4) Father's child-rearing behaviors and SES were the most important predictor variables influencing on children's role-taking. (5) Children' s sex, children's role-taking and father's child-rearing behaviors were the most important predictor variables influencing on children's prosocial behavior. The findings stated above seemed father's child-rearing behaviors and children's role-taking, influenced on children's prosocial behavior.
정종철,최홍란,오희균,박준아,류선열,이종호,김영운,정숭룡 大韓顎顔面成形再建外科學會 1995 Maxillofacial Plastic Reconstructive Surgery Vol.17 No.3
Malignant fibrous histiocytoma rarely occurs in the jaws. Although the histogenesis of this tumor remains controversal, it is best regarded as a primitive and pleomorphic nature reflected by collagen production and occasional phagocytosis. It is common for metastatic foci to appear in lung and regional lymph node. There are variable treatments such as radiotherapy, surgical excision or combination, therapy of surgical excision, chemotherapy and radiotherapy. With the review of literatures, the authors report the clinical study of two cases of malignant fibrous histiocytoma of the jaw.
금피복된 임플란트 보철용 유지나사의 예비하중 및 풀림회전력에 관한 연구
정창모,황희성,전영찬,최설희 大韓齒科器材學會 2000 대한치과재료학회지 Vol.27 No.3
The purpose of this study was to compare the preload and the removal torque produced when using gold coated prosthetic retaining screws (Gold-Tite retaining screws) and non-coated screws(gold screws) repeatedly and to evaluate effects of a thin pure gold coating on screw stability. Following connection of the conical abutment to implant fixture using 20 Ncm of torque applied by a torque gauge, fastened the strain-gauged gold cylinder to conical abutment with gold screw, Gold-Tite retaining screw using 10Ncm. Then, preloads and removal torques were measured, screws tightened and loosened 8 times repeatedly. All experiments were performed under dry and wet condition. The results obtained were summarized as follows : 1. For gold screw group, no significant differences existed in the preload and the removal torque according to trials in both conditions(p>0.05). 2. For Gold-Tite retaining screw group, no significant differences existed in the preload according to trials in both conditions(p>0.05). However, the removal torque decreased at the second trial and incresed, after then(p<0.05). 3. In comparison of preloads according to trials, the preload in dry condition was greater than in wet condition only for Gold-Tite retaining screw group after the fourth trial(p<0.05). However, no significant differences were found between gold screw group and Gold-Tite retaining screw group(p>0.05). 4. In comparison of removal torque according to trials, the removal torque of gold screw group was greater than of Gold-Tite retaining screw group in dry condition at the second, third trial(p<0.05). At the other trials, no significant differences were found among the experimental groups(p>0.05).