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RUSLE 방법을 이용한 만대천 유역의 토사유출량 산정
최한규,박수진,국성표 江原大學校 産業技術硏究所 2010 産業技術硏究 Vol.30 No.B
This study was intended to estimate the soil runoff at the basin of Mandaechun where the measure needs to be taken to deal with the increasing muddy water resulting from soil runoff during wet season and torrential rain at the high reaches of the Soyang lake where highland vegetables are cultivated and soil replacement for improvement is carried out every two to three years. The study was carried out in such a way of identifying the topographic factors using geographical spatial data from Water Management Information System (WAMIS) and ARC-VIEW program and estimating the soil runoff by rainfall frequency using Revised Universal Soil Loss Equation (RUSLE), and furthermore, evaluating the soil runoff contribution at the basin of Mandaechun based on estimate of the soil runoff by section.
최성호,조정민,전기영,김성남,성낙규,김용주,한경희 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-
In this paper, we adapted BLDC motor to PV water pumping systems to maintain high efficiency in the wide speed area. Also to design confidence, we adapted the vector control that drive the maximum torque at each speed limit. We designed optimal gain value of current, speed and pressure PI controller. Inverter gate pulse used Space Vector PWM to reduce torque pulsation of BLDC motor. Finally it was improve general matters of high water storage tank method by direct water supply pumping method.
노인의 우울·불안 및 인지기능에 미치는 인자들의 영향에 관한 연구
류성훈,이귀행,오상우 大韓神經精神醫學會 1990 신경정신의학 Vol.29 No.4
This study was to investigate the influence which several sociocultural factors and physical states had one the anxiety, depression and cognition of the aged. The relationship among the anxiety, depression and cognition was also evaluated. The subjects were 509 aged who were 60 years old or more and lived in JeonJu-Iri areas. The authors employed Spielberger's State-Trait Anxiety Investory for anxiety. Beck Depression Investory for depression and Folstein's Mini-Mental State Examination for cognition. The duration of this study was from March 5 to April 25, 1989. The results were as follows : 1) The group of institutional residence showed lower scores state anxiety trait anxiety(p<.05) and cognition(p<.001) than the group of familial residence. Both groups showed no difference on depression. 2) The group with physical illness showed higher score of state anxiety, trait anxiety and depression and lower scores of cognition than the groups without physical illness(p<.001). 3) Female group showed higher score of depression and lower score of cognition than male group((p<.001). There was no difference on sate anxiety and trait anxiety. 4) Education level showed negative correlation with state anxiety(p<.05), depression(p<.001) and positive correlation with cognition(p<.001) and no significant correlation with trait anxiety. 5) In the group of institutional residence, the duration of institutional residence showed negative correlation with cognition(p<.05) and no significant correlation with state anxiety, trait anxiety and depression. 6) The amount of personal expenses per month showed negative correlation with sate anxiety, trait anxiety and depression and positive correlation with cognition(p<.001). 7) State anxiety, trait anxiety and depression showed positive correlation one another and cognition showed negative correlation with anyone of the above three each other(p<.001).
家兎의 前庭眼球反射에 대한 Amphetamine 및 Diazepamdm의 影嚮
이귀행,박병림,류성훈 大韓神經精神醫學會 1990 신경정신의학 Vol.29 No.4
The effects of amphetamine and diazepam on the control of body posture were examined in unanesthetized rabbits. Vestibuloocular reflex(VOR) was elicited by rotation of whole body at frequency of 0.1, 0.2, 0.3Hz by means of sinusoidal rotator in the dark. The following results were obtained. 1) In normal VOR, the frequency and the velocity of nystagmus were increased by increasing the frequency of stimulus rotation from 0.1Hz to 0.3Hz. 2) In amphetamine treated VOR, the frequency and the velocity of nystagmus were increased at all of 3 stimulus frequencies, but any significant differences of the velocity of nystagmus between different stimulus frequencies were not observed. 3) In diazepam treated VOR, the frequency and the velocity of nystagmus were decreased at all of 3 stimulus frequencies, but any significant differences of the frequency and the velocity of nystagmus between different stimulus frequencies were not observed. 4) The actions of amphetamine and diazepam on the VOR were contradictory. These data suggest that amphetamine and diazepam may impair the control of body posture by increasing or decreasing the VOR respectively, through their action on the central nervous system but not on the vestibular system.
2자유도 PI 제어기를 이용한 BLDC 전동기의 벡터제어에 관한 연구
이종현,성낙규,이상집,이승환,오봉환,이훈구,한경희 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-
This paper describes the speed control method of BLDC Motor using TDOF PI ( Tow-degree of freedom PI ). PI control method generally used has difficulty in efficient speed control because speed response and load torque response interfere each other. It can't decrease the overshoot of motor speed w rm, and shorten the response time of load torque TL, at the same time according to the step alternation of speed reference w rm. Therefore TDOF PI is applied to BLDC Motor in order to supply these weak points of PI control method in this paper. TDOF PI can get the torque characteristic of short response time as well as stable and prompt speed adjustment by separate control for speed response and load torque response. The results from the tests of C program simulation and system construction show that TDOF PI is superior to PI control system in speed adjustment and load torque response.
김완규(Wan-Kuy Kim),조성환(Seong-Hwan Jo) 한국가구학회 2021 한국가구학회지 Vol.32 No.3
In this paper, a study is conducted to compare and analyze the similarities and differences of flat planes commonly used by mankind. The traditional flat plane showed a common structure in which the plane blade is fixed to the plane due to the functional characteristics of processing the plane. However, the hand tool called ‘traditional flat plane’ also has different characteristics from Korea, China, and Japan, which represented the East, and the West also has characteristics that distinguish it from the East. This paper compares and analyzes six items that the appearance of the plane, the fixing method of the blade, the fixing angle of the blade, the working method, the formative characteristics, and the materials used in the plane for the flat planes commonly used by humankind. Traditional planes used in different cultures developed by exchanging influences with neighboring countries, and differences and commonalities were identified by country.
3D 프린팅을 활용한 목가구의 다면체 각재 조인팅 하드웨어 개발 연구
김완규(Wan-Kuy Kim),조성환(Seong-Hwan Jo) 한국가구학회 2021 한국가구학회지 Vol.32 No.1
Design centered of modern furniture has a primary task that is solving structural problem and improving level of completion for realization of its design. For this, divers form of joint subsidiary materials have been used in furniture production process. However, it is hard to find development case of buried joint hardware in spite of its merits that are natural beauty of hardwood and possibility of processing after assemble. The technique of timber joint is requested of professional skills, and subsidiaries that is used in furniture production industry have leaned too much toward on plank focused joint hardware. In the case of 3D printing connector, although this has possibility of formative and functional expression regardless of form of material used, this has weakness that the connector is exposed to the outside. This study is for analyzing joint hardware cases for diversity of hardware used in design centered of modern furniture and increasing the utility. On that basis, the researcher develops 3d printing hardware that is made up existing weakness presenting before and after images of its assembly with joint demonstration process. This hardware geometricized with five and six-sided figure has expandability in furniture design in terms of combining figures. And this diversity also can help realizing modern furniture design that is focused on design.