카오스를 이용한 통신 비화시스템 연구

오진우,김창석 明知大學校 産業技術硏究所 1999 産業技術硏究所論文集 Vol.18 No.-

In this, we study a new secure communication system using a characteristic of chaos. The proposed system utilize a few system condition equation to occur securing signal and mixed with speech signal. The proposed system composed a flexible attracter occurrence development, obtained a high secure degress using attracter of the various styles. We convince a good quality securing in S/N rate of -40[dB] with secured signal and speech signal.

절골술을 이용한 안면교정

오석희,한기환,강진성 大韓成形外科學會 1989 Archives of Plastic Surgery Vol.16 No.5

The most important factor in the beauty of the face is the harmony of the facial skeleton and soft tissue. The postoperative result is not always satisfying after only classic soft tissue surgery. The reason for dissatisfaction is disharmony of the facial skeleton. Recently, the development of maxillofacial surgical techniques enable disharmony of the facial skeleton to be successfully corrected. The authors have had experience with 33 cases of congenital and acquired facial deformities, from March of 1986 to February of 1989, and have followed them from 6 months to 2 years. We used an intraoral approach in most cases and got good results. There were four wound disruptions which were treated conservatively and resolved without sequelae.

Terfenadine과 Ketoconazole 병용투여에 의해 유발된 Torsade de Pointes1예

오석규,국향,임수빈,정진원,박양규,박옥규 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.3

PC TCP/IP를 이용한 서버 데이타베이스 접근의 설계 및 구현

오석균,진성일 충남대학교 자연과학연구소 1993 忠南科學硏究誌 Vol.20 No.2

클라이언트/서버 컴퓨팅 환경의 출현은 네비게이셔널 형태인 기존의 PC DBMS와 UNIX 서버상의 RDBMS와의 연결 욕구가 증가되었다. 이를 지원하기 위해 PC DBMS인 슈퍼 화일에 SQL 문을 사용할 수 있게하여 서버의 Empress 데이타베이스를 접근 가능하도록 SFNet을 설계하여 구현하였다. 새로운 API(Application Program Interface)의 제안으로 슈퍼 화일은 자신의 데이타베이스를 운용하며 서버상의 데이타베이스 접근이 가능하다. 클라이언트와 서버간의 통신을 위해 PC TCP/IP를 사용하였고 서버와 Empress의 인터페이스를 위해 Empress의 기능을 보강하였다.

일제하ㆍ미군정기 韓昇寅의 政治活動과 經濟認識

吳鎭錫 연세대학교 경제연구소 2001 延世經濟硏究 Vol.8 No.1

본고는 1920년대부터 1930년대 초반에 걸쳐 일본의 明治大學과 미국의 풀러톤, 미주리, 콜롬비아 대학 등에서 修學하였고, 미국유학중에는 興士團에서 그리고 귀국해서는 同友會에서 활약하였으며, 協成實業學校 敎師, 和信百貨店 社員을 거쳐, 解放後에는 美軍政의 商務部 商務局長에 발탁되어 남한의 資本主義 國家建設에 일조했던 韓昇寅 의 정치활동과 경제의식의 형성과정, 내용 등을 검토한 글이다. 그동안 이 시기의 經濟學者, 經濟評論家들을 대상으로 한 경제사상사연구가 활발히 진행되어 왔지만, 社會主義 經濟學者들과 이른바 中間派 진영 논자들의 경제사상해명에는 일정한 성과를 거두었음에도 불구하고 정작 구미유학을 통해 근대 자본주의 경제학을 체득하고 귀국하여 민족ㆍ자본주의 진영에서 활동하면서 해방후 남한 자본주의 사회의 주역이 되었던 지식인들을 사례연구로서 검토한 작업은 드물었다. 그러한 점에서 본고는 그간의 연구사적 공백을 일부이나마 메울 수 있으리라고 생각한다.

고등학생들의 생물교과 관련 과학 과정기능 평가

곽대오,황진석,이현주 이화여자대학교 교과교육연구소 2010 교과교육학연구 Vol.14 No.1

본 연구에서는 고등학생들의 생물교과 관련 과학 과정기능 수행 정도를 파악하고 이를 통하여 고등학교 생물교과에서의 교육과정과 교수․학습방법 개선 등의 피드백에 필요한 정보를 고등학교 생물교사들에게 제공하고자 고등학생들을 대상으로 본 연구에서 개발한 생물교과 관련 과학 과정기능 평가도구를 적용하여 다음과 같은 결과를 얻었다. 고등학생들의 생물교과 관련 과학 과정기능 성취도는 전체적으로 매우 낮은 편이었고 개인별로 차이가 심하였다. 과학 과정기능 범주별로는 결과분석 범주의 성취도가 다른 범주들에 비해 높았고, 그 다음으로 결과해석 범주의 성취도가 다른 5가지 범주들에 비해 높았다. 생물교과 관련 과학 과정기능 평가 결과 생물교과 실험수업 경험학생들이 비경험학생들 보다 전체 성취도가 높게 나타났다. 과학 과정기능 범주별로 보면 문제해결 방법설계, 수행, 결과해석, 적용 등의 3가지 범주들의 성취도에서 생물교과 실험수업 경험학생들이 비경험학생들에 비해 높았다. 남학생들과 여학생들의 성취도는 7가지 과학 과정기능 범주들 가운데 문제 및 가설설정 1가지 범주에서만 남학생들이 여학생들 보다 높게 나타났으나 나머지 6가지 범주들에서는 차이가 없었다. 그 결과 전체적으로는 남학생들과 여학생들의 성취도가 유의적인 차이가 나타나지 않았다. 고등학생들의 생물교과 학업성취도와 생물교과 관련 과학 과정기능 성취도간에는 매우 강한 정의 상관관계가 있음을 알 수 있다. The primary purpose of this study was to assess high school students’ performance on science process skills in biology. In order to collect data, a test instrument composed of 27 restricted response questions developed by the authors was administered to 258 (129 males and 129 females) second year students at 8 high schools in Gyeongsangnam-do. The results were as follows: The students received low, unsatisfactory mean scores in the test of science process skills in biology, and individual differences were very large. Out of the seven categories, the achievement score was the highest, and as for the interpretation of the results, formulation of problems or hypotheses, performance, application of results, and identification of variables or control of experiment followed in order. Finally, the lowest achievement score was in the category of design of ways and means. Students who had experienced experimental activities in the subject matter of biology scored significantly (p<0.01) higher than those with less experience. Gender difference in the mean scores of science process skills in biology was not found. Finally, there was a statistically significant (p<0.01) and a fairly strong correlation (r=0.599) between the students' score in the science process skills test and learning achievement in biology.

삭골(Bone shaving)한 골의 재생에 골막이 미치는 영향

강진성,권건영,송중원,오석희,한기환 大韓成形外科學會 1989 Archives of Plastic Surgery Vol.16 No.5

Many orientals have a more prominent malar eminence and mandibular angle than westerners so their faces often look rough and unattracive. In recent years more people want to have a more attractive and beautiful face due to economic prosperity and westernization. Therefore people receiving bone shavings or osteotomies for cosmetic purposes are increasing. The effects of the periosteum on lay bone grafts were investigated but the effect of the periosteum after bone shaving or osteotomy is little known. The authors investigated the effect of the periosteum on the regeneration of bone in membranous and endochondral bone of rabbits. Bony defects each measuring about 5.0×5.0×1.5mm were made on the left and right sides of the parietal bones of 15 rabbits and femurs of 15 other rabbits respectively. The periosteum was preserved on the left and removed on the right. The following results were obtained: 1) The average thickness of the regenerated bones in groups 2 δ4 were thinner than those in groups 1 δ 3 at 4, 8 and 12 weeks postoperatively but the differences of thickness were statistically significant at onl 4weeks postoperatively(P<0.05). 2) The histological findings in groups 2 δ 4 showed lesser regeneration of the shaved bone than those in groups 1 δ 3 at 4, 8 and 12weeks postoperatively. 3) There was no significant increase in the thickness of the regenerated bone after 8 weeks postoperatively in all groups. 4) At 12 weeks postoperatively, the thickness of the regenerated bone in all groups was over 70% of the thickness of the resected bone. In summary, the authors found that it is important to perform overcorrection and resect the periosteum simultaneously in bone shaving to prevent the unwanted regeneration.

社會 體育 指導者들의 스트레스에 대한 實證的 硏究 : 스포츠센터 勤務者를 中心으로

金振浩,吳元錫 경희대학교 체육과학연구소 1996 體育學論文集 Vol.24 No.-

In this study, I scientifically analyzed the difference of manager's stress from working as the classification of the operating style, sex, age, schooling, marital status, the career of current office, the item in charge and duty that are related to the characteristic of social economy and population statistics. chiefly on the social gymnastics teachers who are working at sport centers classified as a total athletic facility among the athletic facility in Seoul area. Following is the conclusion from above analysis. 1)In 10 sentences of 4 factors about organization environment, they showed average 3.01 as the ordinary level grade distribution. They appeared positive in system and organization, similar proportion between positive and negative in recruit and compensation and negative in age limit system, working hour and the participatory rate of making decision. In the comparison of population statistic feature, the workers of membership system sport centers 3.25±0.73 proved more positive than the workers of popular system 2.78±0.83 and this showed very high notable distinction in P〈0.001. In the case of marital status, single respondents 3.26±0.90 proved higher than married ones 2.96±0.80 and it showed a prominent difference in P〈0.05 level. In the comparison of salary aspect, the worker who get the salary above 150 million won 3.57± 1.10 proved higher than the rest and it showed ,as a high level grade difference, a distinguished divergency in P〈0.05 level. Besides, there was no remarkable difference in the classification of sex, age, the career of current job and office, schooling, item in charge and position. 2)In the factor of duty environment, it showed rather higher level than ordinary as average 3.15 entirely. In personal relations, it appeared positive in the relation with co-workers and members, similar in be relation with manager, positive in duty, triviality and job concentration and negative in the matter of re-education, salary and welfare. 120-150 respondents of salary respect showed low grade distribution which is a remarkable divergence in P〈0.05 level. Besides, there was no outstanding discrimination in comparison of factors of sex, age, marital status, career of current job and office, schooling, item in charge and position. 3)In the individual factors, it was wholly average 3.23, rather higher level than ordinary. It proved positive in the progress and future of job and negative in the comparison of leader's image that he had thought of. There were many managers who wanted to transfer to other companies and a few to other items. In the question about job stress, there were many people who had once suffered from the stress of job and physical elements. In the comparison of item in charge, workers of the items(bowling, golf, tennis, racquetball, infant athletic and basketball) showed high grade and outstanding difference in P〈0.05 level and leaders in other items. Besides, there was no remarkable difference in the factor comparison of type of bussiness operation, sex, age, marital status, career of present job and office, schooling, position and salary.

핸드스프링 무릎굽혀 앞공중돌기동작과 몸펴 앞공중돌기동작의 운동학적 비교분석

권오석,윤양진 부산대학교 사범대학 2002 교사교육연구 Vol.41 No.-

In this study, 4 gymnasts who were students of B University at that time were taken and their performance of handspring salto forward tucked and handspring salto forward stretched at through 3 dimensional movement analysis to tell the duration for each phase of the movement, the movement of the articulation of the body, the tract of moving center of the body, and its kinematic element. It is all to provide basic data for efficient training of gymnasts and the findings are as follows: 1. The time duration for phase 1 and 2 differed each other and faster landing on hands in forward handspring salto forward stretched than in forward salto with the body bent helped the straight-line movement change to circular movement giving the handspring a big circular movement, and forward jumping on feet with rapid upright of the upper body maximized the circular radius on the axis of the jaw, contributing to rapid backward circular movement of the lower part of the body. 2. In the observation of the position of the body center, the sway of the body center and the power dispersion was smaller in general in forward salto with the body stretched than in forward salto with the body bent. And in its forward and backward position, it showed lower position in handspring phase of 1 and 2, but higher in the salto of phase 3, 4 and all these contributed to bigger and more stable circular motion. 3. Articulation angle of the body in each phase of handspring forward salto with the body bent and in forward salto with the body stretched appeared to be different through 5 phases. It had more centripetal force in forward salto with the Elbows, shoulders, hips, knees having more curve. In forward salto with the body stretched, centrifugal force appeared to be strong with the elbows, shoulders, hips, knees all being extended. To summarize, Handspring forward salto with the body bent seems to have curved articulation and be slow, while in forward salto with the body stretched, its circular movement appeared be faster with speedy landing on hands, extended knees angle for good jump, and with accelerated hips articulation. Handspring forward salto with the body stretched appeared to enhance its technical performance with far-reaching circular motion. Therefore, forward salto with the body stretched is considered to produce more gracious and dynamic motion than forward salto with the body bent does.

실험적 급성 심근경색증 후 좌심실 재성형에 관여하는 간질 조직의 변화에 대한 전환효소억제제의 기전에 대한 연구 : 백서의 非痛璧性 심근경색 후 좌심실 재성형 및 Transforming Grawth Factor β-1의 발현 변화와 이에 대한 레닌 안지오텐신계 차단제의 효과 분석 Effects on Transforming Growth Factor - β-1 Expression

연태진,김석연,김효수,김어진,김소영,정은주,서정욱,오병희 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.9