사각보행기의 고속 보행제어를 위한 동적 모델링 및 해석

강성철,유홍희,김문상,이교일,Kang, Sung-Chul,Yoo, Hong-Hee,Kim, Mun-Sang,Lee, Kyo-Il 대한기계학회 1997 大韓機械學會論文集A Vol.21 No.5

In order to control a dynamic gait of quadrupedal walking robot, the equations of motion of the whole mechanism are required. In this research, the equations of motion are formulated analytically using Kane's dynamic approach. As a dynamic gait model, a trot gait has been adopted. The degree of freedom of whole mechanism could be reduced to 7 by idealizing the kinematic feature of the trot gait. Using the equations of motion formulated, the results of the redundant-joint torque analysis and the simulation of dynamic walking motion are presented.

뇌척수제거 흰쥐에서 Clonidine효과에 미치는 Imipramine의 영향

강성철,이원석,임병용,홍기환,Kang, S.C.,Lee, W.S.,Rhim, B.Y.,Hong, K.W. 대한약리학회 1984 대한약리학잡지 Vol.20 No.2

뇌척수제거 흰쥐에서 clonidine정맥주사에 의한 확장기 혈압상승작용(postsynaptic action)과 전기자극으로 야기된 빈맥의 심막충수 감소작용(presynaptic inhibitory action)에 대하여 ${\alpha}_1-$ 및 ${\alpha}_2-adrenoceptor$ 길항제의 영향을 관찰하였다. 삼환계 항우울약물인 imipramine을 단회 및 장기 투여하였을 때 clonidine에 의한 두 작용이 어떻게 영향을 받는가를 관찰하여 다음과 같이 요약하였다. 1) Clonidine의 혈압상승효과는 phentolamine이나 piperoxan 전처치에 의하여 길항되었으나, prazosin 전처치에 의하여는 길항되지 아니하였다. 2) Clonidine의 빈맥에 대한 억제작용은 prazosin에 의하여는 영향을 받지 아니하였으나, phentolamine 및 piperoxan 전처치에 의하여는 길항되었다. 3) Clonidine에 대한 혈압상승반응은 imipramine(20 mg/kg) 단회 및 장기 투여에 의하여 차단되었으며, 전자에서 보다 후자에서 더 현저하였다. 4) 빈맥에 대한 clonidine의 억제작용은imipramine단회 및 장기 투여에 의하여 모두 차단되었고, 양자간 에는 큰 차이가 없었다. 이상의 결과로 presynaptic ${\alpha}_2-adrenoceptor$는 imipramine 단회 투여에 의하여 억제되었고 장기 투여에 의하여는 pre- 및 postsynaptic ${\alpha}_2-adrenoceptor$ 둘 다 현저히 억제되었다. 이런 점으로 미루어 presynaptic ${\alpha}_2-adrenoceptor$의 감수성 저하가 삼환계 항우울제의 직접적인 작용기전일 것이라는 증거를 제시하기는 어렵다고 암시된다. In pithed rats, rising in diastolic blood pressure by clonidine, when intravenously injected, is expressed as the postsynaptic action, and inhibitory action on electrical stimulation-induced tachycardia by clonidine is expressed as the presynaptic inhibitory action. In this study it was aimed to observe the inhibitory effect of imipramine caused by a single and chronic administration on both postsynaptic and presynaptic action of clonidine in pithed rats, and discussed in relation with the mechanism of antidepressant action of imipramine. 1) A rise of diastolic blood pressure by clonidine was not antagonized by prazosin, but by both phentolamine and piperoxan. 2) The inhibition by clonidine of tachycardia which was induced by electrical stimulation was also antagonized by phentolamine and piperoxan, but not by prazosin. 3) The increase in diastolic blood pressure in response to clonidine was inhibited by both a single or chronic administration with imipramine (20 mg/kg). It was more pronounced in the latter. 4) The inhibitory action of clonidine on the tachycardia was markedly inhibited by both types of administration with imipramine, between which there showed little difference. It is concluded that the presynaptic ${\alpha}_2-adrenoceptor$ is rather sensitively affected by a single administration with imipramine, and a long-term imipramine treatment may inhibit both pre- and postsynaptic ${\alpha}_2-adrenoceptors$, simultaneously. Furthermore, it was seemed unlikely that these results provide the evidence :to support the fact that the subsensitivity of presynaptic ${\alpha}_2-adrenoceptor$ may be the mechanism of action of tricyclic antidepressant.

지중 송전관로 되메움용 순환골재의 현장실증시험을 통한 적용성 평가

강성철,이강렬,안태봉,Kang, Sung-Chur,Lee, Kang-Ryel,Ahn, Tae-Bong 한국건설순환자원학회 2015 한국건설순환자원학회 논문집 Vol.3 No.1

Underground transmission lines always generate heat and transmit heat through surrounding backfill materials. Therefore, in the design of power lines it becomes a very crucial factor to transfer heat effectively into the neighbouring soils. In this study, in order to enhance field applicability of recycled aggregates for backfill material of transmission lines, quality criteria and construction criteria were proposed, and thermal stability of power lines through field demonstration tests were analyzed. In the field tests, two types of recycled aggregates and sand which is currently used for backfilling were compared in terms of thermal behaviour. Test results showed that recycled aggregates represented similar trends with sand in temperature and moisture content corresponding to time lapse and distance from the heat source. Consequently, recycled aggregates can be utilized for backfill materials of underground transmission lines as a substitute material of sands. 지중 송전선은 전기저항에 의한 발열현상이 늘 있으며, 그 주변의 되메움재를 통하여 열을 방출하게 된다. 따라서, 송전관로의 설계에는 발생하는 열을 주변 지반이 효과적으로 외부에 전달하여, 열적 안정성을 확보하는 것이 매우 중요한 설계 요소가 된다. 본 연구에서는 지중 송전관로 되메움재용 순환골재의 현장 적용성을 향상시키기 위하여, 순환골재의 품질기준 및 시공기준을 제시하고, 현장 실증시험을 통하여 송전관로의 열안정성을 분석하였다. 현장 실증시험에서는 순환골재 두 종류와 현재 되메움재로 사용하고 있는 모래의 열적 거동을 비교하였다. 시험 결과, 순환골재는 시간경과와 관로에서의 이격거리에 따라 온도와 함수비 변화가 모래와 유사하게 나타났다. 따라서 순환골재는 지중 송전관로 되메움재로서 일반 모래를 대체하여 적용 가능할 것으로 판단된다.

반도체 사진공정에서 실리콘 웨이퍼 위의 Silylated Resist의 Fourier 변환 적외선 분광분석

강성철,김수종,손민영,박춘근,Kang, Sung Chul,Kim, Su Jong,Son, Min Young,Park, Chun Geun 한국분석과학회 1992 분석과학 Vol.5 No.4

본 논문에서는 FT-IR 분광분석법을 이용하여 여러 가지 반응조건에서 기체상 silylation 반응에 의해 생성된 silylated layer의 depth를 비파괴적으로 정량하는 방법을 제안하였다. Silylated layer의 depth는 FT-IR 스펙트럼의 특성 봉우리들(Si-O-ph, Si-C, Si-H)의 흡광도를 바탕 스펙트럼 공제법으로 측정하여 SEM의 두께 측정치와 비교하여 정량하였다. FT-IR 분광분석법을 이용한 Silylated layer의 depth 분석은 비파괴적이고 정량적인 방법으로, 이 방법은 silylation process window를 설정하는 데 적합하다는 것을 알았다. Using FT-IR, we determined the depth of silylated layers produced from various gas-phase-silylation conditions was proposed by using Fourier Transform Infrared (FT-IR) spectroscopic analysis. The depth of silylated layer was determined from absorbance measurments of the significant peaks (Si-O-ph, Si-C, Si-H) of FT-IR spectra with background spectrum subtraction method. And the results were compared with thickness measurments of SEM. The results were well agree with SEM. It found to be well suited for determining silylation process window.

上水生產의 民間委託에 관한 硏究

姜成哲(Kang Sung Chul),金度曄(Kim Do Yup),金相九(Kim Sang Goo) 한국지방자치학회 2000 韓國地方自治學會報 Vol.12 No.3

Efforts to Economic growth, positive intervention of government on social and economic problems, and rising administrative demands of the residents burden upon finances of local governments. As a means for solving above problems, this study is aimed to grope for privatization of public enterprises which local government manages. Up to now, all persons doesn't agree that privatization is the best alternative. But many scholars argue that privatization is superior than direct management of public enterprises. And so, in many countries, many public enterprises are changing into private enterprises. In above viewpoints, this study is intended to deal with privatization of waterwork treatment facilities in Pusan Metropolitan City. Result about privatization of waterwork treatment facilities is that partial trust-management among many privatization methods is appropriate one. Because this method solves problems that many scholars worried about efficiency of privatization. And we think that contracting-out is the best as alternative of trust-management. The reason is that this method has the advantages of preventing negative effects attendant upon trial and error, minimizing dissatisfaction attendant upon personnel reduction, stabilizing water-supply, mitigating resistance of residents attendant upon privatization.

跆拳道動作에 따른 腦波變化에 關한 硏究

姜聲哲(Sung chul-Kang),尹尙華(Sang Hwa-Yun),南在和(Jae Hwa-Nam) 용인대학교 무도연구소 1988 武道硏究所誌 Vol.1 No.1

무도학과 교육과정에 대한 인식도 조사연구

강성철(Kang, Sung-Chul),이형언(Lee, Hyoung-Un) 용인대학교 무도연구소 2006 武道硏究所誌 Vol.17 No.1

MQTT 기반의 스마트홈에서 실시간 수요반응 게이트웨이 설계 및 구현

강성철(Kang Seong Cheol),최진식(Choi Jin Seek) 한국통신학회 2016 한국통신학회 학술대회논문집 Vol.2016 No.6

체육학부 학생들의 동양무술에 대한 인식도 조사 연구

강성철(Kang, Sung-Chul),박준석(Park, Jun-Seok) 용인대학교 무도연구소 1996 武道硏究所誌 Vol.7 No.1

地方政府의 固有事務 遂行水準에 관한 硏究

姜成哲(Kang Sung-Chul),李遠?(Lee Weon-Il),金相九(Kim Sang-Goo) 한국지방자치학회 2000 韓國地方自治學會報 Vol.12 No.2

The purpose of this study is to analyze the performance level of local self-autonomy focused on performance level of inherent affairs in local government. So this paper discussed the performance level of inherent affairs by the view of residents not by the sight of bureaucrats or local government. Also this paper defines the evaluations from peoples to local body under self-autonomy system. The last aim of this article is to find out the priority of management in performing local inherent affairs for inhabitants. The findings of this dissertation are as follows; 1. The average satisfaction degree of peoples to the performance level of inherent affairs is generally low, especially in welfare, living-environment, culture/art affairs. 2. Local residents think that local government and its bureaucrats are very poor in deciding policy priority. This paper concludes that local government should be careful to perform welfare, living-environment, culture/art affairs in order to develop local self-autonomy system.