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Jeong, Hyeok-June,Hwang, Myunggwon,Jung, Hanmin,Ha, Young-guk Hindawi Limited 2014 Journal of applied mathematics (JAM) Vol.2014 No.-
<P>This paper proposes a multilayered quadrotor control method that can move the quadrotor to the desired goal while resisting disturbance. The proposed control system is modular, convenient to design and verify, and easy to extend. It comprises three layers: a physical layer, a displacement control layer, and an attitude control layer. The displacement control layer considers the movement of the vehicle, while the attitude control layer controls its attitude. The physical layer deals with the physical operation of the vehicle. The two control layers use a mathematical method to provide minute step-by-step control. The proposed control system effectively combines the three layers to achieve drift stabilization.</P>
Review of the family glyphipterigidae (Lepidoptera: Yponomeutoidea) in Korea
June-Hyeok Jeong,Bong-Kyu Byun 한국응용곤충학회 2024 한국응용곤충학회 학술대회논문집 Vol.2024 No.04
The family Glyphipterigidae comprises more than 500 described species worldwide. In Korea, only 11 species of 4 genera under 2 subfamilies recorded. In this study, a total of 16 species were discovered, including 5 new recorded species. The new recorded species discovered are as follows; Glyphipterix euleucotoma Diakonoff & Arita, 1976, G. gamma Moriuti & Saito, 1964, G. gemmula Diakonoff, 1976, G. mikadonis Arita & Owada, 2006 and G. semiflavana Issiki, 1930. All available information, adults and genital images structures are provided.
DNA barcoding of the 76 species of family Crambidae (Lepidoptera) in Korea
June-Hyeok Jeong,Ji-Young Lee,Jae-In Oh,Sang-Yoon Kim,Jun-Min Seo,Bong-Woo Lee,Il-Kwon Kim,Bong-Kyu Byun 한국응용곤충학회 2023 한국응용곤충학회 학술대회논문집 Vol.2023 No.10
The family Crambidae, so called as Grass moths, have been known as a difficult group in identification due to their similar wing patterns among the allied species. Some species are well known as pests to the agricultural and ornamental plants of economic importance. Therefore, this study was carried out to provide the DNA barcode and related information for distinguishing the complex species among Crambidae. In this study, we extracted and analyzed the DNA barcodes from 185 specimens of 76 species in the family Crambidae. Based on the result, one species of the genus Schoenobius, Pagyda, Neoanalthes, Palpita, Ecpyrrhorrhoe and Paratalanta area reported for the first time from Korea.
Introduction of family Glyphipterigidae (Lepidoptera) in Korea
June-Hyeok Jeong,Bong-Kyu Byun 한국응용곤충학회 2023 한국응용곤충학회 학술대회논문집 Vol.2023 No.10
그림날개나방과는 날개편 길이 10~12mm 정도의 작은 나방으로 파좀나방아과와 그림날개나방아과로 구성 된다. 파좀나방아과는 앞날개 외연 중앙에 삼각형의 흰색 점이 있다는 형태적 특징이 있지만 종간 특징이 매우 유사하다. 그림날개나방아과는 앞날개에 반짝이는 금속성 무늬가 있으며 주행성이라는 특징이 있다. 그림날개 나방과는 세계적으로 약 500여종이 기록되어있으며 중국은 57종, 일본은 41종이 기록되었지만 한국은 11종만이 알려져 있어 추가적인 연구 가능성이 충분한 분류군이다. 따라서 본 연구는 최신화 된 한국산 그림날개나방과의 정리를 목표로 한다.
Kim, Sung June,Kwon, Jeong,Nam, Jae Keun,Kim, Wanjung,Park, Jong Hyeok Pergamon Press 2017 Electrochimica Acta Vol. No.
<P><B>Abstract</B></P> <P>One of the primary obstacles to the commercialization of dye-sensitized solar cells (DSSCs) is the improvement of their long-term stability. Here, we report greatly improved long-term stability of DSSCs, which have PEDOT:FTS polymer as a counter electrode. DSSCs with this PEDOT:FTS film demonstrate slightly lower power conversion efficiency of 8.1% under standard conditions (AM 1.5G, 100mWcm<SUP>−2</SUP>) compared to the ∼9.1% efficiency of Pt, using an electrolyte with iodine/iodide, which is the most popular redox shuttle. However, we demonstrate that this conducting polymer counter electrode facilitates the fabrication of solar cells with greatly improved long-term stability compared to Pt-based ones after exposure to electrolyte soaking conditions. Various electrochemical analyses were performed to evaluate the enhanced durability of PEDOT:FTS polymer in the highly corrosive iodine/iodide electrolyte under a continuous redox reaction condition.</P>
DNA barcoding of the 62 species of subfamily Tortricinae (Lepidoptera: Tortricidae) in Korea
Jin-Sung Kweon,June-Hyeok Jeong,Ji-Young Lee,Dong-Myoung Kim,So-Yeon Kim,Soo-Jeong Park,Jun-Min Seo,Jae-In Oh,Sang-Yoon Kim,Bong-Woo Lee,Il-Kwon Kim,Bong-Kyu Byun 한국응용곤충학회 2023 한국응용곤충학회 학술대회논문집 Vol.2023 No.04