오프라인 프로그램을 이용한 로봇 비전시스템

송달섭,김문수 동의공업대학 2000 論文集 Vol.26 No.1

In this paper a manufacturing robot system is developed for the purpose of increasing the flexibility against changing product model. This system performs the soldering task. The module to solder the circuit is composed of robots(AC-L5) and automatic solder machine (SOLDER KING Ⅲ), is programmed 0LP(off-line programming) technique. The general kinematic and dynamic features of robot are analyzed to apply the error calibration of the AC-1.5 and the real assembly line. Robot teaching by using vision image at eye-on-hand reduces the setup time to cope with changing product model. The developed cells from the above results were installed and operated in the real camera back-cover assembly line where the work time and the soldering quality were improved compared to an ordinary cell using SCARA robot and the rate of the bad product is reduced in the process. Also, the task teaching in off-line program is 50 times faster than an ordinary on-line teaching method after the completion of one setting, contribution to the increase and efficiency of production and tasks.

防毒湯 및 防毒湯加菱實의 Cyclophosphamide 副作用 抑制에 관한 實驗的 硏究

崔達永,朴元煥,金俊騎 대한동의병리학회 1997 동의생리병리학회지 Vol.11 No.1

韓醫學에 있어서 癌의 治療에 대해서는 韓藥을 利用한 抗癌劑의 開發과 아울러 東·西醫學의 結合을 통한 治療 效果의 增大 方向에서 化學療法과 放射線療法의 副作用을 減少시키는 藥劑 및 處方에 대한 硏究가 활발히 진행되어 왔다. 防毒湯은 황기 人蔘 五味子 補骨脂 白朮炒 麥門冬 當歸 복령 半夏 陳皮 등 十味의 약물로 구성되어 處方으로 健脾·益氣·補腎의 作用을 가지고 臨床事例分析을 통하여 抗癌劑 副作用에 의하여 주로 발생되는 消化障碍 肝障碍 脫毛 血液學的 變化 및 免疫機能低下 등의 改善에 대한 報告와 抗腫瘍效果 및 免疫反應에 대한 實驗的 報告가 있었으며, 또한 菱實은 韓國과 中國, 日本 등에서 胃癌이나 胎毒, 酒毒에 使用되고 있다. 이에 防毒湯 및 防毒湯加菱實의 抗癌劑 副作用에 대한 抑制 效果를 實驗的으로 立證할 필요성이 있다고 생각되어 흰쥐에 化學療法劑인 cyclophosphamide를 注射하여 副作用을 誘發시키고, cyclophosphamide 投與 前後 各 5日間 防毒湯과 防毒湯加菱實을 投與한 다음 GOT, GPT, BUN, creatinine, 白血球數, 赤血球數, 血小板數를 測定하였으며, 腹腔癌을 誘發시킨 雄性 생쥐에 防毒湯 및 防毒湯加菱實 投與 5日後 cyclophoshamide를 注射하여 副作用을 誘發시키고 白血球數, 赤血球數, 血小板數를 測定하였다. 防毒湯 및 防毒湯加菱實은 cyclophoshamide의 副作用에 대한 抑制 效果가 있는 것으로 사료되어 동서의학의 결합을 통하여 암치료에 유효하게 응용될 수 있을 것으로 기대된다. In order to investigate the effects of Fangdutang and Fangdutangjiawei on reducing side-effects of cyclophosphamide to the rats, and mice which have abdominal tumor after Sarcoma-180 cells were transplanted, cyclophosphamide, the anti-cancer agent, was injected in order to induce the side-effects, and the extract of Fangdutang and Fangdutangjiawei was administrated through mouth from 5 days before the injection to 5 days after the injection, and observe GOT, GTP, BUN, creatinine, number of leukocyte, erythrocyte an thrombocyte. The results are summarized as follows: 1. In the effects of the inhibition of side-effects on the liver function, the GOT and GPT activity were proved to be reduced by the Fangdutang and Fangdutangjiawei. 2. In the effects of the inhibition effect on the side-effects on the kidney function, the BUN was proved to be reduced by the Fangdutang and Fangdutangjiawei but creatinine remained in all groups. 3. In the number of leukocyte, erythrocyte and thrombocyte, the sample group of Fangdutang and Fangdutangjiawei that did not have cancer showed an increase compared with control group. While, there was no distinguishable development in the study on the cancer-carrier mice. As the result of above experiment, it is presumed that Fangdutang and Fangdutangjiawei have proven to have inhibitory effect on side-effects of cyclophosphamide. We can conclude that Fangdutang and Fangdutangjiawei will be useful for cure of the cancer in occidental and oriental medical world.

국제경제환경변화와 한국의 대응 방안 : 美·EU·中·日을 중심으로

구달모 조선대학교 지역사회발전연구원 2002 地域發展硏究 Vol.7 No.1

三民主義 理論 硏究 : 革命思想의 史的 考察을 中心으로 한 小考

趙達元 圓光大學校 1960 論文集 Vol.2 No.-

말하기 연계 글쓰기 교육의 수업 사례

손달임 이화어문학회 : 이화여자대학교 한국어문학연구소. 2015 이화어문논집 Vol.36 No.-

This study is about Writing-Speaking integrated education lesson about Ewha Womans University case. In Ewha Womans University, <Korean Language and Writing> has been operated as the only course for communication education. The goal of this curriculum is to develop the ability for logical speaking and writing, but the focus of the education is writing. But there are many students who find critical thinking and logical writing difficult. Relatively speaking, they think it is not difficult to speak oneself. Accordingly, I suggest the effective communication education methods for the integration education between speaking and writing. In this course, as students performed verbal description, group presentation and individual interview, they experienced various speaking and writing. This process contributed to less students' emotional burden and raise the interest in writing. The students have on time learning a close association speaking and writing, also realizing communicative importance by the many interactive act. And furthermore, it could increase the ability to organize their own idea and explain logically. This study has signification in suggesting the possible education method in one course through the change of class management. 본고에서는 이화여자대학교의 <우리말과 글쓰기> 수업 사례를 중심으로 말하기와 글쓰기를 효율적으로 연계할 수 있는 교육 방법에 대해 살펴보았다. <우리말과 글쓰기> 과목은 자신의 생각과 느낌을 논리적인 글과 말로 표현할 수 있는 능력을 키우는 것을 목적으로 하는데, 그중에서도 글쓰기에 초점이 맞추어져 있다. 그러나 대부분의 학생들은 자신의 생각을 말로 표현하는 것보다 글로 표현하는 것에 두려움을 가지고 있는 경우가 많다. 이에 본고에서는 학술적인 글쓰기 능력을 향상시키기 위해 말하기가 어떻게 활용될 수 있는지를 모색하고자 하였다. 글쓰기 수업 과정 중에서 학생들은 말 그림 그리기, 조별 발표와 토론, 개별 면담 등의 다양한 말하기 활동을 수행하는데, 이러한 과정을 통해 학생들은 글쓰기에 대한 부담을 줄이는 동시에 흥미를 유발할 수 있으며, 말하기와 글쓰기가 별개의 과정이 아님을 스스로 깨닫게 된다고 생각한다. 궁극적으로는 다양한 방식의 말하기 활동을 글쓰기와 병행함으로써 자신의 생각을 체계화하고 이를 논리적으로 표현하는 종합적 의사소통 능력을 향상시킬 수 있다고 생각한다. 본고에서 소개한 수업 사례는 글쓰기 교육 과정에서 활용할 수 있는 여러 가지 교수 방법 중 하나일 뿐이다. 앞으로 수업 현장에서 적극적으로 활용하고 학습자 특성에 따라 차별적으로 적용할 만한 보다 체계적이고 세분화된 교수 방법을 모색해야 할 것이다.

자속 분포학습에 의한 영구자석 동기전동기의 토오크 리플 저감

이동희,송달섭,원태현 동의공업대학 2001 論文集 Vol.27 No.1

PMSM drives are widely used in the industrial and residential applications because of high efficiency, high power density and high performance. For better performance of PMSM, however, torque ripples should be reduced. This paper investigates a reduction of torque ripple due to the unsinusoidal flux linkage produced by the shapes of stator slot and magnetic pole. To minimize torque ripple, a simple flux estimator is proposed. This method interactively compensates the distributed flux linkage from an error between the measured and estimated currents. The proposed algorithm is verified through simulation.

Enhancement of Microbial Oil Production by Alpha-linolenic Acid Producing Yarrowia lipolytica Strains QU22 and QU137

Paula Mattanna,Priscila Dallé da Rosa,Ana Paula Gusso,Neila S. P. S. Richards,Patrícia Valente 한국식품과학회 2014 Food Science and Biotechnology Vol.23 No.6

Microbial oils enriched in essential polyunsaturatedfatty acids can be used as nutritionalcomplements. In order to improve the lipid yields and lipidprofiles of 2 Yarrowia lipolytica strains, the effects ofmedium components and culture conditions were investigatedusing shake flasks. Under optimized conditions (cultivationfor 3 days at 25ºC and 150 rpm, using peptone as anitrogen source and glucose as a carbon source), thebiomass, lipid yield, and lipid content reached 6.75 g/L,3.48 g/L, and 51.55% for Y. lipolytica QU22, and 6.85 g/L,3.52 g/L, and 51.38% for Y. lipolytica QU137, respectively. Using a shaking speed of 150 rpm, unsaturated fatty acidsconstituted 87.96% (QU22) and 87.08% (QU137) of thetotal lipids produced by these strains, with 9.52 and 7.86%of alpha-linolenic acid, respectively. The strains are suitablecandidates for fermentation processes involving essentialpolyunsaturated fatty acid (PUFA) production.

高脂肪性食餌로 因한 高脂血症 白鼠에 首烏延壽丹이 미치는 影響

金庸柱,최달영,김준기,박원환 동국대학교 경주대학 1996 東國論集 Vol.15 No.-

This study was done in order to investigate the effect of Suoyensudan on hyperlipidemia. Results: 1. The level of serum total cholesterol was decreased with the significance in the sample groups as compared with the control groups. 2. The level of serum HDL-cholesterol was increased with significance in sample groups as compared with the control groups. 3. The level of serum phospholipid was increased with significance in Sample 1 group as compared with Control 1 group, but Sample 2 group did not show significance as compared with Control 2 group. 4. The level of serum β-lipoprotein was decreased with the significance in Control 1 group, but control 2 group did not show significance. 5. Rate of total cholesterol vs. HDL-cholesterol and total cholesterol vs phospholipid were increased in the sample groups as compared with the control groups. Conclusion; It is considered that Suoyensudan respectively had recovering effect on the Hyperlipidemia induced by cholesterol in male rats. So it can be use to prvent and treat hyperlipidemia and related deseases.

PMSM의 저속운전 및 기동성능 개선을 위한 선형 엔코더

이동희,송달섭,원태현 동의공업대학 2001 論文集 Vol.27 No.1

PMSM(Permanent Magnet Synchronous Motor) drives are widely used in the industrial applications and home appliances because of high torque ratio, high efficiency and precise control performance. In recent years there has been a significant development of PMSM motors of various kinds. Improvements in the properties of permanent magnet materials have increased the viability of related types of motors. However, precise speed and position information is essential for the good control performance. In order to produce correct torque, the rotor flux position information from position sensor has to be identified. In this paper, a low cost position sensor is proposed for improving of starting and low speed performance of PMSM. The proposed position sensor produces a linear analog signal that is proportional to the electrical rotor position. The information of initial rotor position at the starting instance and accurate position in the low speed can be obtained with the proposed encoder. The performance of the proposed encoder is verified with experimental results.

선풍기 콘덴서에서 발생하는 트랙킹 파형 분석

최태원,송달섭,이오걸 동의공업대학 2001 論文集 Vol.27 No.1

Electric fans are electric home appliances widely used in summer season, and because its mechanical structure and how to handle is simple, the products of various size and structure has been produced. Every year, about 5% of the fire originated in electric home appliances have been originated in electric fan, and owing to this. It have brought a tremendous loss of buildings and human lives. As the cause of the fire in electric fan, there are layer short of fan motor coil, short of electric wire in service hole of fan motor by superheating of coil of fan motor, deterioration of condenser, short of electric wire of swing part of fan head, short of power source cord. In this study, we observed the wave shape of tracking of one of the prodrome before ignition by deterioration of condenser, and analysed their harmonics of current wave shape. As the result of this study, it is analysed that the current wave shape of normal operation of electric fan is different from the current wave shape of tracking, accordingly the magnitude of harmonics is different, and we expect available to development of protector of electric fan by use of difference of these harmonics.