환경보존형 유용천적의 보존과 활용에 관한 연구

이형래 충북대학교 한국과학재단 지정 첨단원예기술개발연구센터 1996 연구보고서 Vol.1 No.-

유용천적인 무당벌레가 농림작물의 주요 해충인 진딧물류의 포식능력과 농약으로부터 천적을 보호할 목적으로 진딧물 방제용 약제들을 공시하여 무당벌레의 독성비교를 실시하였고 몇가지 진딧물농약을 이용한 누대도태를 실시한 결과는 1. 기주인 복숭아혹진딧물을 제공하면서 무당벌레의 누대사육을 실시하여 각종시험의 공시천적으로 활용되었다. 2. 무당벌레 성충의 진딧물 포식량은 복숭아혹진딧물에서 암컷과 수컷에서의 1일 포식량이 각각 62.8 마리와 60.2마리이었고, 목화진딧물에서는 각각 175.0마리와 157.5마리, 조팝나무진딧물에는 각각 92.4마리와 74.2마리의 포식능력이 매우 높았다. 3. 무당벌레의 성충과 유충에 대한 진딧물 방제약제의 독성비교는 메타 25% 유제, 코니도 10% 수화제, 피리모 25% 수화제 및 아시트 50%수화제의 추천방제농도의 1/2 농도에서 살충율이 낮았으며 유충의 경우도 같은 경향이나 성충에서 보다 높은 살충력을 보였다. 4. 약제 저항성 천적 유발은 진딧물 방제약제중에서 독성이 비교적 낮은 4종약의 1/2 농도에로 성충단계에서 누대도태를 실시중이다.

계층화된 퍼지인식도(Fuzzy Cognitive Map)를 이용한 추론메카니즘에 관한 연구

이건창,조형래 한국경영과학회 1998 한국경영과학회지 Vol.23 No.4

본 논문에서는 FCM을 이용하여 의사결정의 질을 높일 수 있는 추론방법을 제시한다. 이를 위하여 FCM의 추론의 질을 저하시키는 문제중의 하나인 동기화 문제(synchronization problem)를 설명하고, 이를 해결하기 위한 방안으로서 FCM 계층화(levelization) 알고리즘을 제시한다. 본 논문에서 제안된 계층화된 FCM을 이용한 추론절차를 제시하고, 그 활용예를 설명한다.

계층화된 퍼지 인식도를 이용한 웹 사이트 디자인 시뮬레이션에 관한 연구

이건창,정남호,조형래 한국경영과학회 2001 韓國經營科學會誌 Vol.26 No.1

It is well known that the web design is composed of several factors which are interacting with each other. However, the current approach to web design has been focused on modifying specific factors without considering its impact on other factors. In this sense, we propose more holistic approach to the web design by using fuzzy cognitive map. For this purpose, we form an illustrative fuzzy cognitive map for the web design which is based on the literature, and analyze an impact of change in a specific factor on other factors. Especially, to improve the output analyzability, we suggest an advanced version of fuzzy congnitive map called stratified fuzzy cognitive map. After simulating the fuzzy cognitive map for web design, we could conclude that our approach is robust and effective compared to the traditional web design approach.

진딧물類에 대한 天敵 무당벌레의 捕食能力 및 그들의 選擇毒性에 關한 硏究

李炯來,金正和 충북대학교 농업과학기술연구소 1989 農業科學硏究 Vol.7 No.2

The experiment was conducted to evaluate the development of the predacious beetle Hamonia axyridis fed on the aphis Aphis gossypii, the aphidivorous activity of the beetle and the selective toxicity between the beetle and the three aphids, Myzus persicae, Aphis gossypii and aphis citricola at the rate of recommended concentrations of the selected aphidicides in the laboratory. The developmental periods(day) of the larva stage , the pupa stage, the predating after emergence, the preoviposition after mating and the egg of the beetle recorded 12.6, 6.35, 15.29, 15.79 and 2.71, respecitively. The aphidivorous activity greatly differed with the developmental stages of the beetle and the 4th instar consumed ca. 168.9 aphids and the adults consumed ca. 164.2 aphids per day, when provided with an abundant number of the Aphis gossypii. The aphidivorous preference of the beetle within the mixed infestations of the three aphids shown the 100%, 99.2% and 92% for Myzus persicae, A. gossypii and A. citricola, respectively. In studies of the mortality of the 4th and the adult of beetle, the acephate 50 Wp and cyhalothrin 1 Ec shown the highly toxicity as over ca.93%, while the pirimicarb 25 Wp shown the low toxicity as below ca. 4-38%. Also the studies of mortality of the three aphids at the same rate of the che-micals, the Myzus persicae, shown the highly toxicity as over ca.98% at the all chemicals and the A. gossypii and A. citricola shown highly toxicity as over ca.80% at the acephate and the cyhalothrin but the pirimicarb shown the low mortality as below ca.8% against the Aphis gossypii and the Aphis citricola. In these results, the pirimicarb shown the highly selective toxicity between the three aphids and the predacious beetle H. axyridis.

기업내에서 부서간 갈등해결을 위한 의사결정조정 메커니즘에 관한 연구 : 웹 DSS 접근방법을 중심으로 Emphasis on Web-DSS Approach

이건창,조형래 한국경영과학회 2001 韓國經營科學會誌 Vol.26 No.1

As the advent of the Internet, most of the modern firms are now forced to use the Internet as one of telecommunication tools for daily activities. Especially, as the decision units and/or makers in a firm become geographically dispersed due to the globalization trend, the need for integrating them effectively on the Internet is getting attention from researchers and practitioners much more than ever. In literature, this kind of need has been specially conspicuous in the need for coordinating production and marketing activities which are known as one of the typically conflicting with each other in terms of purposes. Lee and Lee(1999) has proposed an interesting coordination environment for production and marketing, named PROMISE. This paper is aimed at improving the coordination algorithm utilized in PROMISE and accordingly proposing a web-driven DSS for the purpose of transforming Promise into a web-based decision support platform for production and marketing coordination.

代替的 情報시스템의 評價에 관한 考察

李炯來 德成女子大學校 1988 德成女大論文集 Vol.17 No.-

The impact of information economics on accounting has been increased since 1970's. e, g. the choice among the financial reporting systems and the information choice for management decision making agency problem. There creteria by which competing information systems can be compared, independent of the payoff functions and the probability distribution function of users has been proposed in the information economics research. ; fineness, sufficiency and garbling. This review explains the relationships among fineness, sufficiency and garbling, the value of information.

忠北地域 벼멸구 系統의 殺蟲劑 低抗性에 關한 硏究

李炯來,金正和 충북대학교 농업과학기술연구소 1991 農業科學硏究 Vol.9 No.1

The strains of brown planthopper(BPH), Nilaparvata lugens Stal, which collected on paddy field in Chungbuk province during the late of September to early of October in 1990 were studied to investigates of insecticide resistance and biochemical characteristic. The results are summarized as follows ; 1.In comparison of LD50(㎍/g) by the several insecticides against the collected strains of BPH, the fenthion showed 22.40 at Seoksung strain of BPH and the BPMC showed 6.90 at Cheongju strain of BPH. While, propoxur, carbaryl and carbofuran showed no big differance of the collected strains. 2.In resistant levels of the insecticides against the collected strains of BPH compared with the LD50 level(㎍/g) of susceptible strain of BPH(S-Lab), the BPMC and the propoxur showed highly resistant levels for 7.04 and 3.4 times, respectively. 3.Comparisons of LC50 (ppm) against the collected BPH: with different bioassay methods showed the susceptible trend on spray method > topical microapplication method > dipping method and the trend was with the results of LD50 levels on tested strains of BPH. 4.In comparison of esterase activity against the collected strains of BPH as compared with the susceptible strain(S- Lab) , the activity of β-band showed higher than the results of α-band and the activity of resistant strains in collected BPH showed more higher than susceptible strains of the collected BPH.

벼 멸구에 對한 Carbofuran의 殺蟲效果에 미치는 環境要因의 影響 (Ⅰ) 土性, 有機物, pH.溫度 : Effect of Environmental Factors on the Biological Toxicity of Carbofuran against the Brown Planthopper(Nilaparvata lugens STAL) Ⅰ.Soil Texture, Organic Matters, pH and Temperature

李炯來,李海根 충북대학교 농업과학기술연구소 1987 農業科學硏究 Vol.5 No.1

A study was conducted to determine the effects of environmental factors which were soil texture, organic matter, pH and temperature on the biological toxicity against the brown planthopper BPH, (Nilaparvata lugens STAL) when carbofuran 3% granule was applied in artificial controlled pots. The experimental results are shown as follows; 1.Soil texture did not affect the biological toxicity of carbofuran on the BPH until 7 days after treatment (DAT) of carbofuran 3%G, but thereafter loam type soil showed the higher efficacy than those of sandy loam and clay loam. 2.The lower contents of organic matters in soil, the higher mortality of the BPH. 3.Soil pH did not affect the mortality of the BPH until 4 DAT, but !he lower pH in soils, the higher mortality from 14 DAT. 4.When sprayed with BPMC, MIPC, carbaryl and diazinon, the effects of temperature on the mortality of the BPH showed that the higher temperature, the higher mortality at 1 DAT, but the reverse was the case at 4 DAT. In case of application with carbofuran and diazion granules, the mortality of carbofuran were decreased at 20℃ and that of diazinon at 20-25℃.

에폭시수지를 이용한 콘크리트 보의 균열 보수효과에 관한 연구

李炯來,柳熙仲 호남대학교 산업기술연구소 2000 산업기술연구논문집 Vol.8 No.-

최근 콘크리트 구조물의 균열보수에 가장 많이 사용되는 에폭시수지는 접착성과 화학성이 우수하여 효과적인 균열 보수재료로 인식되어 왔으며, 이에 대한 연구가 최근 진행되고 있지만 에폭시수지의 균열보수에 대한 엄격한 규준이 없는 현실이다. 따라서 본 연구에서는 콘크리트 구조물의 부재에 가장 많이 적용되는 압축강도 150kg/cm2, 250kg/cm2, 350 kg/cm2 의 콘크리트 보에 가력장치를 이용하여 4, 5, 7 ton의 하중을 재하 함으로써 시험체에 0.2∼0.3mm폭의 균열을 발생시킨 후, 국내에서 가장 많이 사용되고 있는 H사의 에폭시 수지를 선정하여 주제와 경화제의 혼합율을 3 : 1, 5 : 1, 7 : 1의 비율로 달리하여 균열을 저압저속주입공법으로 보수한 후, 파괴실험을 실시하여 균열에 대한 보수성능을 비교, 분석하였다. 본 연구 결과를 요약하면 압축강도의 증가에 따른 보수성능은 증가하지 않았으며 또한 큰 차이가 없었다. 그리고 혼합비율에 따른 보수성능은 주제의 증가에 따라 증가하지 않았으며 주제와 경화제의 비율이 5 : 1인 경우가 보수효과가 가장 크다는 것을 알 수 있었다. 그러므로 보수효과는 보수체의 압축강도보다는 혼합비율이 보수성능에 더 큰 영향을 미친다고 판단되며, 실제 현장에서 에폭시수지를 이용하여 균열을 보수할 경우, 보수성능을 높이기 위해서 수지재료의 특성에 따른 최적의 혼합비율을 채택하여야 하며, 또한 엄격한 계량에 의하여 혼합한 후, 보수를 실시하는 것이 매우 중요하다고 판단된다. Since epoxy resin which has been widely used to rehabilitate cracks of concrete structures has good adhesion and chemical properly, it is considered as effective repairing material. There is no strict criterion for crack repair of epoxy resin although a lot of studies have been performed recently. In this study concrete beams whose compressive strengths are 150 kg/cm2, 250 kg/cm2, 350 kg/cm2 are loaded about 4, 5, 7 ton and the crack of 0.2∼0.3mm width is made. Epoxy resin is chosen as the product of H company widely used in Korea. The mixture ratio of resin and hardener has three cases such as 3:1, 5:1 and 7:1 After crack is repaired using inject grouting, fracture test is performed and the rehabilitation efficiency for crack is analyzed. As compressive strength increases, rehabilitation efficiency does not increase. Also there is no big difference. Although the resin increases, rehabilitation efficiency for the mixture ratio does not increase. The mixture ratio of resin and hardener, 5:1, has the best rehabilitation efficiency Therefore it is concluded that the mixture ratio rather than compressive strength has an effect on rehabilitation efficiency. If crack is repaired using epoxy resin in field, the optimum mixture ratio should be chosen to increase the rehabilitation efficiency. And the rehabilitation should be performed after being mixed by the accurate weighing.

WCDMA 시스템에서 송신 다이버시티 기법의 성능 비교 분석

이상호,김영선,박형래 한국항행학회 2003 韓國航行學會論文誌 Vol.7 No.2

본 논문에서는 3세대 이동통신시스템의 요소 기술인 송신 다이버시티 기법에 대한 성능 분석을 수행한다. WCDMA 시스템의 규격으로 채택된 송신 다이버시티 기법은 귀환 데이터의 유무에 따라 개루프 송신 다이버시티와 페루프 송신 다이버시티로 나뉘어지며 DPCH 신호의 시공간 부호화를 통해 다이버시티 이득을 얻는다. 이러한 송신 다이버시티 기법의 성능 분석을 위해 WCDMA format #13을 목표 시스템으로 하여 이동속도, 경로 수, 파워 컨트롤, 귀환 데이터의 지연에 대한 영향을 컴퓨터 시뮬레이션을 통해 비교 분석한다. In this paper, we analyze the performance of transmit diversity techniques which are the key technologies of the third generation mobile communication systems. Transmit diversity techniques adopted on the specification of 3GPP are classified into open-loop and closed-loop and closed-loop methods depending on the existence of feedback data. In WCDMA systems, the DPCH signal is space-time coded to provide a mobile station with diversity. Computer simulations shall be performed to analyze and compare their performance considering the effect of mobile speed, number of path, power control, and delay of feedback with the WCDMA slot format #13 for application to WCDMA systems.