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조우성(Woo Seong Cho),정대훈(Dae-Hoon Jeong),김현경(Hyun Kyung Kim),김명기(Myeong-Gi Kim),한주환(Ju-Hwan Han),서상태(Sang-Tae Seo),김길하(Gil-Hah Kim) 한국농약과학회 2017 농약과학회지 Vol.21 No.3
Susceptibility and persistence of Sakhalin pine sawyer, Monochamus saltuarius were evaluated by body spray method and twig dipping method using 2 kinds of neonicotinoid and 3 kinds of diamide insecticides. Two neonicotinoid insecticides showed no difference in susceptibility between the 2 experimental methods, and all of them showed 100% mortality at the recommended concentration after 72 h. All of the three diamide insecticides showed very low (< 60%) insecticidal activity in the body spray method and twig dipping method, but only 100% in the twig dipping method in the cyantraniliprole. As a result of the residual experiment using 3 insecticides with high insecticidal activity, thiacloprid, acetamiprid showed 80% mortalities respectively, but cyantraniliprole showed 0% mortality. These results suggest that thiacloprid and acetamiprid can be used as a used for controlling M. saltuarius adults as vector of pine wilt disease.
5종의 네오니코티노이드계 약제에 대한 솔수염하늘소의 살충활성과 꿀벌독성
조우성(Woo Seong Cho),정대훈(Dae-Hoon Jeong),이재선(Jae Seon Lee),김현경(Hyun Kyung Kim),서상태(Sang-Tae Seo),김길하(Gil-Hah Kim) 한국농약과학회 2017 농약과학회지 Vol.21 No.1
Susceptibility and persistence of Japanese pine sawyer, Monochamus alternatus adults, and acute contact toxicity, foliage contact toxicity, and residual toxicity to honeybee, Apis mellifera were evaluated by using 5 kinds of neonicotinoid pesticides. All neonicotinoids pesticides showed over 80% mortality 48 hour after body spray treatment. However, only 2 kinds of acetamiprid ME and acetamiprid+buprofezin showed over 80% mortality in the twig dipping treatment. All of the five neonicotinoides pesticides used in M. alternatus adults showed residual effect of 60-80% mortality, but the efficacy decreased rapidly after 1 day of treatment. Acetamiprid ME showed the lowest toxicity in the acute and foliage contact toxicity test of A. mellifera. The residual toxicity of leaves on A. mellifera was very low in acetamiprid ME and acetamiprid+ buprofezin. However, the residual toxicity of all pesticides treatments decreased to 10-30% after 1 day of treatment and further decreased with time. These results indicate that acetamiprid ME among five neonicotinoid agents showed a high insecticidal activity in the M. alternatus adults, while it exhibited relatively low contact and residual toxicity in the A. mellifera. It is thought that acetamiprid ME can be effectively used for the control of the M. alternatus adults as vector of pine wilt disease.
조우성 ( Woo-seong Cho ),조규철 ( Keu-chul Cho ),한지훈 ( Ji-hoon Han ),한기준 ( Ki-jun Han ) 한국정보처리학회 2014 한국정보처리학회 학술대회논문집 Vol.21 No.2
본 논문은 IEEE 802.11 에서 QoS(Quality of Service)를 지원하는 환경에서 낮은 우선순위를 가지 는 트래픽이 무선매체를 점유했을 때 TXOP 시간을 동적으로 적용하는 방법을 기술하였다. 본 논문 에서는 IEEE 802.11e 환경에서 AP 가 Beacon 메시지를 통하여 TXOP 시간을 통보함으로써 매체 접근 시도에 발생하는 충돌 감소와 낮은 우선순위 트래픽의 처리량을 증가하는 기법을 제안한다.
Modified Trapezoidal PWM 인버터 고조파 특성 해석
조우성(Woo-Sung Cho),김인동(In-Dong Kim),노의철(Eui-Cheol Nho),김만고(Marn-Go Kim),전성즙(Seong-Jeub Jeon),조철제(Cheol- Je Joe),문성득(Sung-Deuk Moon) 전력전자학회 1999 전력전자학술대회 논문집 Vol.1999 No.7
A new PWM method for voltage source inverters is described. The switching instants determination of the proposed PWM scheme is simple. Therefore, hardware Implementation with a microprocessor system is easy and high frequency operation of an inverter can be obtained. The maximum line-to-line output voltage of a 3-phase inverter with the proposed scheme is larger than that of the SPWM inverter under a linear modulation region Principle of the proposed PWM method is described and harmonic characteristic analysis is carried out.
a-b-c frame에서 구현한 AC-DCconverter 전류제어기
조우성(Woo-Sung Cho),노의철(Eui-Cheol Noh),김인동(In-Dong Kim),전성즙(Seong-Jeub Jeon),박경훈(Kyung-Hun Park),임헌호(Hun-Ho Lim) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
A new current controller implemented in a-b-c frame for AC- DC converter is proposed.<br/> The proposed MTPWM(Modified Trapezoidal PWM),Which is quite suitable for three phase AC-DC converter. It is known that MTPWM has good harmonics characteristics for high modulation index. It is very simple and requires no transformation in it. The results of computer simulation are shown for the validity of proposal.
李鍾永(Yi, Jong-Yeong),趙雨成(Cho, Woo-Seong) 중앙법학회 2015 中央法學 Vol.17 No.4
Law policy about industrial complex and management which made primary contribution to Korea"s economic development which is role model in world history, should change in accordance to the industrial structure and characteristics of the time. Industrial complex which was made in order to push forward the economic development since the 1960s had played a pivotal role of Korea"s manufacturing industry and had led economic growth as a major industries. As time goes by after the completion of construction, industrial structure had changed from the large-scale equipment industry to the small-scale and high-tech knowledge industry. Industrial complex needed change and response in accordance with this change, but because of the deterioration of infrastructure competitiveness of the complex is getting reduced. And it also raised urban problems like air-pollution, noise and traffic jam as industrial complex had incorporated into the city. Re-establishing an decrepit industrial complex to competitive industrial can be derived from one state"s industry promotion project. Current "INDUSTRIAL SITES AND DEVELOPMENT ACT", "INDUSTRIAL CLUSTER DEVELOPMENT AND FACTORY ESTABLISHMENT ACT" and "SPECIAL ACT ON VITALIZATION AND STRENGTHENING COMPETITIVENESS OF DECREPIT INDUSTRIAL COMPLEX"(hereinafter referred to as the "DECREPIT INDUSTRIAL COMPLEX ACT") involve Regeneration project system, Projects for upgrading structures of industrial complexs system, and Strengthening competitveness project system each, in order to revitalize decrepit industrial complex. But, Regeneration project and Projects for upgrading structures of industrial complexs deal with substantially same matter in different part of the system and legal basis, but in reality it shows similar way how to check and resolve the problem about decrepit industrial complex. During more than 20 years have elapsed after After ground was broken which decrepit industrial complex for strengthening competitiveness just as the industrial complex, The recently enacted DECREPIT INDUSTRIAL COMPLEX ACT is limeted national industrial complex and industrial complex in general to main role of development and a healthy national economic development. DECREPIT INDUSTRIAL COMPLEX ACT are looking to old age based industrial complex to concentrate the budget and the competence that the important role the reason for limiting the industrial complex as a target of strengthening competitiveness to the development of the national industry. In this respect Regeneration project and Projects for upgrading structures of industrial complexs due to “INDUSTRIAL SITES AND DEVELOPMENT ACT” and “INDUSTRIAL CLUSTER DEVELOPMENT AND FACTORY ESTABLISHMENT ACT” means in terms of the system that target the decrepit industrial complex that does not belong to the subject of DECREPIT INDUSTRIAL COMPLEX ACT. In the long run, projects for strengthening competitiveness of industrial complex suited in terms of reunification of system and aspects the effective budget that allows it to be promoted as a unified DECREPIT INDUSTRIAL COMPLEX ACT.