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신종익,이정한,송한범,강대언,오상훈,차승렬,이용재,김상대,이원호 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1(구조계)
This study investigates the performance of the reinforced concrete frame with the steel plate slit damper. The test was carried out to investigate the structural behavior between the reinforced concrete bare frame and the reinforced concrete frame with the steel plate slit damper. The test results showed that the energy absorption capacity of the damped-frame was several times larger than that of the bare frame. For the damage by the input energy is concentrated on the steel plate slit damper, the ductilities of the former structure were increased and the damaged frame can be reused after exchange the steel plate slit damper.
3상 유도전동기 구동을 위한 전압원 인버터의 새로운 과변조 PWM 기법
신흥교,박종규,김봉식,신휘범 慶尙大學校 工科大學 自動化및컴퓨터應用技術硏究所 1997 自動化 및 컴퓨터應用技術 Vol.4 No.1
The novel PWM(pulsewidth modulation) strategy of three-phase voltage source inverter in the overmodulation range is proposed. Generally, the space vector PWM strategy in the overmodulation range is widely utilized due to its simple and effective digital implementation and increased voltage transfer ratio. A unique algorithm manages the transition form the onset of overmodulation to six-step operation. This proposed technique maximizes the utilization of the dc-link voltage and maintain the voltage linearity between the reference and output voltages, and it decreases the necessary memory quantity for the look-up table of the angle.
김영학,한범석,안종문,신성우 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2(구조계)
Recently residential tall buildings have been prosperous in Korea with the type of multi-used building since late 1990s. Although 6 buildings ranked in world tallest building Top 200 have been built in Seoul, over 100-stories building isn't presented yet. The characteristics of Korean super-tall buildings are described; ① located in Seoul city, Kyung-gi do Sung-nam city, and Busan city ② the height between 100m and 200m ③ multi-used building. The purpose of this study is to find out the behavior of tall building in point of displacement contribution factor calculated by the principle of virtual work. Consequently present the most effective members for controling lateral drift control by analysis using computer programs on a real structural model.
An event of GM cabbage resistant to diamondback moth
Bo-Min Kim,Jong-Sup Shin,Beom-Seok Park,Soon-Chun Jeong,Chee-Hark Harn 한국육종학회 2013 한국육종학회 심포지엄 Vol.2013 No.07
Bt gene derived from the B. thuringiensis has been used for developing GM crops, and corn, cotton and soybean producing B. thuringiensis toxins have been on the market for last 16 years or so creating a huge GMO industry. One of the notorious pests in brassica crops is diamond backmoth (DBM). In order to protect the insect plague of crops from DBM, 4-5 billion dollars have been wasted annually for applying integrated measures in worldwide. Major prevention is use of pesticides that may build the contamination level of chemicals in the ground and this practice threats the environment and ecosystem. An alternative is to develop GM brassica crops and therefore we have developed GM cabbages resistant DBM using bt gene. Lots of T0 cabbages were tested for resistance and independent GM cabbages resistant to DBM were selected. Molecular analysis was conducted to find GM cabbage to hold one copy transgene and intergenic insertion. We found two independent GM cabbages as an event and those have been self-crossed for two generation. Also we are working the development of GM cabbage with different vector that contains bar gene as a selection marker.
Development and Selection of GM Cabbage Resistant to Diamondback Moth
Bo-Min Kim,Jong-Sup Shin,Beom-Seok Park,Soon-Chun Jeong,Chee-Hark Harn 한국육종학회 2014 한국육종학회 심포지엄 Vol.2014 No.07
Bt gene derived from the B. thuringiensis has been used for developing GM crops, and corn, cotton and soybean producing B. thuringiensis toxins have been on the market for last 17 years or so creating a huge GM seed industry. One of the notorious pests in brassica crops is diamondback moth (DBM). In order to protect the insect plague of crops from DBM, 4-5 billion dollars have been wasted annually for applying integrated measures in worldwide. Major prevention is use of pesticides that may build the contamination level of chemicals in the ground and this practice threats the environment and ecosystem. An alternative is to develop GM brassica crops and therefore we have developed GM cabbages resistant DBM using bt gene. Lots of T0 cabbages were tested for resistance and independent GM cabbages resistant to DBM were selected. Molecular analysis was conducted to find if GM cabbage holds one copy transgene and intergenic insertion. We found an independent GM cabbage and it contained a singly copy of the transgene without disturbing the insertion site. This one called C95 line with an status of event have been self-crossed for two generation (T2). Also we are working the development of GM cabbage with different vector that contains bar gene as a selection marker. So far 17 T0 cabbages have been obtained by bar selection.
Anti-windup Integral-Proportional Controller for Variable-Speed motor Drives
Jong-Gyu Park,Jae-Ho Chung,Hwi-Beom Shin 전력전자학회 2002 JOURNAL OF POWER ELECTRONICS Vol.2 No.2
The Windup phenomenon appears and degrades control performance when a controller with integrating action is used and the plant input is limited An anti-windup integral-proportional (IP) controller is proposed for the variable-speed motor drives and it is experimentally applied to the speed control of a vector-controlled induction motor driven by a pulse width modulated (PWM) voltage source inverter (VSI) The consistency range of the IP controller is firstly derived and the integral state is controlled to satisfy always the consistency range according to whether the controller output is saturated or not. Although the operating condition like motor load or speed command is changed under the limited plant input, it is experimentally verified that the speed response has much improved performance, such as no overshoot and fast settling time, and the maximum plant input is also effectively utilized
Modeling and Parameter Identification of Coal Mill
Shin, Hwi-Beom,Li, Xin-Lan,Jeong, In-Young,Park, Jong-Man,Lee, Soon-Young The Korean Institute of Power Electronics 2009 JOURNAL OF POWER ELECTRONICS Vol.9 No.5
The coal mill used in the coal-fired power plants is modeled in view of the controller design rather than the educational simulator. The coal mass flow and the outlet temperature are modeled by reinvestigating the mass balance and heat balance models physically. The archived data from a plant database are utilized to identify the model parameters. It can be seen that the simulated model outputs are well matched with the measured ones. It is also expected that the proposed model is useful for the controller design.