대학에서 세대공동체 교육을 위한 멘토링 모형에 관한 연구

정준모 원광대학교 대학원 2008 論文集 Vol.40 No.-

As the advent of an aging society, various problems are appearing these days. One of the difficult problems is an intergenerational trouble. Also the advent of lifelong learning society and the decrease of new students cause the environment of university to change a lot. So an university can not pass over the educational desire of old age and the intergenerational problem of difference in the point of lifelong education. Therefore, this study investigates the necessity of intergenerational programs for old and young students to learn together in the university, analyzes the realities and finds the possibility of activation of intergenerational programs running in the off-line, and analyzes the suitability of the factor of composition about the model of cyber mentoring for making strong generationnets which successful intergenerational programs persue. Ultimately the purpose of this study is to contribute to solving intergenerational troubles through intergenerational communication which is developed from intergenerational programs.

Sodium Dodecyl Sulfate의 분해반응에 대한 속도론적 연구

이길준,김종용,박병각 嶺南大學校 環境問題硏究所 1994 環境硏究 Vol.14 No.1

하천수에서 분리해 낸 SDS(Sodium Dodecyl Sulfate) 분해균주에 의하여 분해균주량의 변화와 SDS의 농도변화를 주어 SDS를 분해시킬 때 그 분해반응을 속도론적으로 연구하였다. 실험결과 SDS의 분해를 BOD로 표시하여 분해률을 측정한 속도식은 1차로 나타남을 알 수 있었다. 그리고 분해균주량의 변화와 SDS농도의 변화에 따른 속도상수는 분해규준량에는 영향을 받지 않으나 SDS의 농도에는 영향을 받음을 알 수 있었다. 그리고 활성화에너지는 5.304kcal/mol, 활성화 파라메타인 ???와 ???는 각각 4.69kcal/mol, -56.90 e.u.임을 알았다. Kinetic studies were carried out for change in BOD of SDS degradating microorganism isolated from river water. It is found that the decomposition of SDS is first order. Rate constants for the decomposition of SDS and its degrading microorganism found not to have an influence on variation of SDS-degrading microorganism but have an influence on SDS concentration. And thermodynamic parameters, Ea, ???? and ????, were obtained the value of 5.304kcal/mol, 4.69kcal/mol and -56.90 e.u., respectively.

한국어판 강점ㆍ난점 설문지(Strengths and Difficulties Questionnaire) 개발

안정숙,전성균,한준규,노경선,Robert, Goodman 大韓神經精神醫學會 2003 신경정신의학 Vol.42 No.1

Objectives : This study aims to develop a Korean version of the Strengths and Difficulties Questionnaire (SDQ-Kr). Methods : The Strengths and Difficulties Questionnaire (SDQ) is a brief behavioural screening questionnaire that can be completed by the parents within 5 minutes and used to assess the psychopathology (prosocial behaviour, hyperactivity, emotional problems, conduct problems, and peer problems) of 4-16 year olds. The SDQ was translated into Korean, retranslated back to English, and corrected after discussion with the original developer and trial test. The reliability and validity of the SDQ-Kr was evaluated by working with 347 parents of nonclinical (n=98), pediatric outpatient (n=92), and psychiatric outpatient (n=157) children. Results : Working with 62 parents of nonclinical children, the test-retest reliability of 5 subscales of SDQ-Kr was 0.94-0.84(p<0.01). For 190 nonclinical and pediatric children, internal consistency of 5 subscales of SDQ-Kr was 0.80-0.50 (Cronbach's α). Factor analysis generated the five identical factors with the five subscales explaining 49.5% of total variance. For 347 children of nonclinical, pediatric, and psychiatric group, ANOVA showed that any two among the three groups was significantly different in subscales and total difficulties scores, except between pediatric and psychiatric children in emotional problems subscore (p<0.01). The discriminating rate among three groups was 75.5% in discriminant analysis. Conclusions : The Korean version of SDQ shows very similar psychometric performance to the original SDQ developed by Goodman. This study gives evidence of the usefulness of the SDQ-Kr as a promising screening instrument for epidemiological research and clinical purposes.

접착제 산업의 전략적 기술에 관한 연구

하정진,김창준 동아대학교 공과대학부설 생산기술연구소 1996 生産技術硏究所硏究論文集 Vol.1 No.2

Recently, due to the rapId growth of automobile, electonic, ship-building, and construction industries, the demand of adhesive increase fastly. According this situation, there are briskly to carry out the various efforts of domestic manufactuers on facility increase, new product development, and market establishment. The trend of grobal market after 2000 year are going to change over high functional adehesive for strengthening on the special functions, adhesives for upgrading easiness, safety, and exfoliation of use, high performnace adhesives for enlarging the application scopes, adhesives for automation, and adhesives for harmless to environment and human body. In this paper, we will search for the outlooks and problems of grobal and domestic market in adhesives industry. Along with these technology trend we will discuss the strategied and hopeful parts for adhesive industry after 2000 year.

E-초등학교 어린이의 영구치 맹출시기 및 순서

권정현,최병재,이제호,김성오,손흥규,최형준 大韓小兒齒科學會 2009 大韓小兒齒科學會誌 Vol.36 No.2

치아 맹출은 나이, 성별, 인종, 시대에 따라 시기 및 순서의 차이가 있으나, 교과서에 인용되어 임상에서 사용되는 영구치 맹출 및 치근 형성에 대한 자료는 1933년 Logan과 Kronfeld가 발표한 것이므로 현재 한국 어린이의 영구치 맹출 경향과 차이가 있을 수 있다. 따라서 이번 연구의 목적은 한국 어린이의 영구치 맹출연령을 구하고, 이를 근거로 맹출순서를 알아보며, 이전 국내외 연구자료와 비교하여 차이를 알아보는 것이다. 이에 1998년부터 2005년까지 연세대학교 치과대학병원 소아치과에 내원하여 구강검진을 시행한 E-초등학교의 어린이 중 만 6세에서 만 12세의 2,619명 (남자 1,307명, 여자 1,312명)의 자료를 수집하여 영구치의 맹출시기 및 순서에 대해 연구 한 바 다음과 같은 결론을 얻었다. 1. 상악의 영구치 맹출시기는 중절치는 남자 만 6.81세, 여자 만 6.73세, 측절치는 남자 만7.78세, 여자 만7.65세, 견치는 남자 만10.48세, 여자 만9.92세, 제1소구치는 남자 만9.76세, 여자 만9.63세, 제2소구치는 남자 만10.66세, 여자 만10.49세, 제1대구치는 남자 만6.39세, 여자 만6.26세, 제2대구치는 남자 만12.13세, 여자 만 12.03세로 나타났다. 2. 하악의 영구치 맹출시기는 중절치는 남녀 모두 정확한 시기의 측정은 불가능하였지만, 만 6.08세 이전에 맹출한다는 것을 추정 할 수 있었고, 측절치는 남자 만6.78세, 여자 만6.65세, 견치는 남자 만9.76세, 여자 만9.05세, 제1소구치는 남자 만9.82세, 여자 만9.59세, 제2소구치는 남자 만10.67세, 여자 만10.52세, 제1대구치는 남자 만6.22세, 여자 만6.12세, 제2대구치는 남자 만11.58세, 여자 만 11.14세로 나타났다. 3. 맹출순서는 상악은 제1대구치, 중절치, 측절치, 제1소구치, 견치, 제2소구치, 제2대구치 순이었고, 하악은 중절치, 제1대구치, 측절치, 견치, 제1소구치, 제2소구치, 제2대구치 순이었다. 4. 모든 영구치에서 남자보다 여자가 빨리 맹출하였으며, 상악은 약 0.19세, 하악은 약 0.29세 먼저 맹출하였다. 5. 남녀 모두 상악은 측절치와 제1소구치 사이, 하악은 측절치와 견치 사이에 휴지기가 있었고, 남자의 휴지기는 상악 1.98년, 하악 2.98년, 여자는 상악 1.98년, 하악 2.40년이었다. The purpose of this study was to present new data on the timing and sequence of permanent teeth emergence and to compare these findings with the results of earlier studies. The dental examinations had been performed to E-elementary school students, who visited the Yonsei University Dental Hospital between 1998 and 2005; 1,307 boys and 1,312 girls with the age ranging from 6 to 12 years old. The followings were concluded. 1. Eruption time of the maxillary permanent teeth is as follows, It was 6.81 years in male and 6.73 years in female for the central incisor, 7.78 years in male and 7.65 years in female for the lateral incisor, 10.48 years in male and 9.92 years in female for the canine, 9.76 years in male and 9.63 years in female for the first premolar, 10.66 years in male and 10.49 years in female for the second premolar, 6.39 years in male and 6.26 years in female for the first permanent molar, and 12.13 years in male and 12.03 years in female for the second permanent molar. 2. Eruption time of the mandibular permanent teeth is as follows. The central incisor could not be determined in this study, but it is assumed to erupt before the age of 6.08. In the mandible, eruption time was 6.78 years in male and 6.65 years in female for the lateral incisor, 9.76 years in male and 9.05 years in female for the canine, 9.82 years in male and 9.59 years in female for the first premolar, 10.67 years in male and 10.52 years in female for the second premolar, 6.22 years in male and 6.12 years in female for the first permanent molar, and 11.58 years in male and 11.14 years in female for the second permanent molar. 3. The eruption sequence is as follows. In the maxilla, the first permanent molar erupted first, followed by the central incisor, the lateral incisor, the first premolar, the canine, the second premolar, and the second permanent molar. In the mandible, the central incisor erupted first, followed by the first permanent molar, the lateral incisor, the canine, the first premolar, the second premolar, and the second permanent molar. 4. Tooth eruption occurred earlier in female compared to male by average of 0.19 year in the maxilla and 0.29 year in the mandible. 5. In both male and female, the hiatus (interval of rest) occurred between the emergence of lateral incisor and first premolar in the maxilla while it was observed between the lateral incisor and canine in the mandible. Male had a hiatus of 1.98 years in the maxilla and 2.90 years in the mandible, while the female's were 1.98 years and 2.40 years, respectively.

새로운 DGS 구조를 이용한 발진기 구조에 대한 연구

박준석,정명섭 국민대학교 생산기술연구소 2003 공학기술논문집 Vol.26 No.-

This paper presents a novel defected ground structure (DGS) and its application to a microwave oscillator. The presented oscillator is designed so as to use the suggested defected ground structure as a feedback loop inducing a negative resistance as well as a frequency-selective circuit. Applying the feedback loop between the drain and the gate of a FET device produces precise phase conversion in the feedback loop. The equivalent circuit parameters of the DGS are extracted by using a three-dimensional EM calculations and simple circuit analy sis method. The implemented 8.94GHz oscillator exhibits 9 dBm output power with over 40% dc-to-RF power efficiency and -84.5dBc/Hz phase noise at 100 kHz offset from carrier.

n-터플에 기초한 두 가지 완전 해싱 기법

이종근,강신준 國立 昌原大學校 基礎科學硏究所 1993 基礎科學硏究所論文集 Vol.4 No.-

본 논문에서는 n터플을 기초로 한 두 가지 완전 해쉬기법을 제시 하였다. 사실 n터플은 heuristic알고리즘을 이용하여 문자의 집합으로 표시할 수 있으며, 이는 다시 0/1 행렬이나 터플 테이블로 표시 된다. 본 연구에서는 Ziegler기법을 이용하여 완전 해쉬 함수를 구조하였다. In this paper, two new perfect hashing methods based on n-tuple are presented. A unique n-tuple from a set of words extracted by a heuristic algorithm. Then the extracted n-tuples are mapped into a 0/1 sparse matrix or tuple table. Using Ziegler's row displacement method or backtracking a perfect hash function is constructed.

염소이온이 코발트의 부식반응에 미치는 영향

朱宰伯,李政峻 弘益大學校 科學技術硏究所 2000 科學技術硏究論文集 Vol.11 No.-

Electrochmical dissolution behavior of cobalt in chloride solution was investigated. Kinetic data of cobalt dissolution and hydrogen reduction were measured in acid and alkaline solutions containing chloride ions at several pH values. Rotating disc electrode was used in order to eliminate the mass transport limitations at the electrode surface. The effect of pH on the corrosion potential and corrosion current were observed. Also the kinetic mechanism of cobalt dissolution in acid solution was examined. It was found that the dissolution behavior in chloride solution is quite different from that in sulfate solution.

濕式法에 依한 輝安鑛으로부터 三酸化 안티모니의 製造에 關하여

오재현,김준수,고인용,정원용 연세대학교 산업기술연구소 1979 논문집 Vol.11 No.1

An investigation on the production of high purity Sb₂O₃was carried out by means of the acid leaching process from the roasted ore of stibnite. The approach of these studies has been to investigate purity, particle size, recovery and crystal structure of Sb₂O₃obtained through the subsequent treatments of leaching, hydrolysis and neutralization under various conditions. The results obtained in these experiments are summarized as follows; 1) It was possible to use dilute hydrochloric acid to extract Sb₂O₃from the roasted stibnite. Because of the prior roasting treatment, the contamination of impurities could also be reduced in the final products. 2) The rate of extraction of Sb₂O₃from the roasted stibnite was increased concentration of hydro-chloric acid as increased amount of addition of the acid. 3) The yield of Sb₂O₃obtained by hydrolysis of SbCl₃was increased with increasing temperature of hydrolysis. 4) The crystal structure of Sb₂O₃obtained by hydrolysis of SbCl₃at 20℃(room temperature) was confirmed as a orthorhombic crystal structure which is the same as that of valentinite. The recovery of Sb₂O₃from the roasted ore appeared to be nearly 100% under optimum conditions.

분광광도법에 의한 염화철중 규소의 정량에서의 Amberlite LA-2의 이용

김연두,배준현,정현옥 충남대학교 자연과학연구소 1988 忠南科學硏究誌 Vol.15 No.1

For the photometric determination of silicon in the iron(Ⅲ) chloride, the iron(Ⅲ) was extracted to organic phase with Amberlite LA-2 in the cons. HCl solution. In the residual aqueous solution, the silicon was determined by molybdenum blue method. The method was found to be very useful to determine a low concentration of silicon in the concentrated iron sample.