• Title/Summary/Keyword: 나비

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업계소식

  • Korea Boiler Engineering Association
    • 보일러설비
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    • no.9 s.152
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    • pp.88-99
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    • 2006
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업계소식

  • Korea Boiler Engineering Association
    • 보일러설비
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    • no.11 s.154
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    • pp.86-97
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    • 2006
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Establishment and Development Process of Cultural Tourism Festival: A Case of the Butterfly Festival of Hampyeong County (문화관광축제의 성립과 전개과정: 함평나비축제를 사례로)

  • Lee, Jeong-Rock
    • Journal of the Economic Geographical Society of Korea
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    • v.9 no.2
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    • pp.197-210
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    • 2006
  • This study focuses on the establishment and development process of Hampyeong Butterfly Festival as a cultural tourism event. Among several cultural tourism festivals helded in Korea, Hampyeong Butterfly Festival of Hampyeong county of Jeollanamdo, is recognized as one of famous events all over the country. Since the first festival of 1999, over 1 million tourists have been visited to Hampyeong county. The programs and contents of festival, the degree of preference and satisfaction of festival were developed since 1999. The number of tourists participated in festival also were increased from six hundred thousand of 1999 to 1.6 million of 2005. The total budget of festival were increased 2.5 hundred million of 1999 to 6.9 hundred million of 2005. The economic effects were increased 63 hundred million of 1999 to 105 hundred million of 2005. With these evolution process, Hampyeong Butterfly Festival was positioned and evaluated as a of succeed festivals.

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Ultrastructure of the Laval Hemocytes in Sericinus montela Grey (Lepidoptera: Papilionidae) (꼬리명주나비(Sericinus montela Grey) 유충혈구의 미세구조)

  • 채순용;김상석;권선방;양희영
    • Korean journal of applied entomology
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    • v.32 no.1
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    • pp.90-100
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    • 1993
  • Ultrastructure of the larval hemocytes in Sericinus montela Grey was observed with the transmission and scanning electron microscope. The 5 cell types, according to Breh lin and Zachary(1986), identified in the hemocytes of the last instar S. montela larva were; prohemocyte, plasmatocyte, granular cell, spherule cell and oenocytoid. Prohemocytes could be easily charaterized by a relatively large nucleus nd poorly developed cytoplasmic organelles. Plasmatocytes were relatively large spindle-shaped or oval cells with fibrous bundles. The spindle-shaped plasmatocytes, especially, were characterized by a well developed, elongated nucleus. Granular cells had various granules, either morphologically or in electron density, and highly developed cytoplasmic organelles in the cytoplasm. They had numerous cytoplasmic processes. Spherule cells were characterized by cytoplasmic spherules containing fine materials, which are released into the hemolymph upon maturity of the cell. Oenocytoids consisted of electron dense materials and the organelles in cytoplasm were poorly developed.

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High-speed Radix-8 FFT Structure for OFDM (OFDM용 고속 Radix-8 FFT 구조)

  • Jang, Young-Beom;Hur, Eun-Sung;Park, Jin-Su;Hong, Dae-Ki
    • Journal of the Institute of Electronics Engineers of Korea SP
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    • v.44 no.5
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    • pp.84-93
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    • 2007
  • In this paper, a Radix-8 structure for high-speed FFT is propose. Main block of the proposed FFT structure is Radix-8 DIF(Decimation In Frequency) butterfly. Even throughput of the Radix-8 FFT is twice than that of the Radix-4 FFT, implementation area of the Radix-8 is larger than that of Radix-4 FFT. But, implementation area of the proposed Radix-8 FFT was reduced by using DA(Distributed Arithmetic) for multiplication. For comparison, the 64-point FFT was implemented using conventional Radix-4 butterfly and proposed Radix-8 butterfly, respectively. The Verilog-HDL coding results for the proposed FFT structure show 49.2% cell area increment comparison with those of the conventional Radix-4 FFT structure. Namely, to speed up twice, 49.2% of area cost is required. In case of same throughput, power consumption of the proposed structure is reduced by 25.4%. Due to its efficient processing scheme, the proposed FFT structure can be used in large size of FFT like OFDM Modem.

Distribution and Population Dynamics of Korean Endangered Species; Hipparchia autonoe (Lepidoptera: Nymphalidae) on Mt. Hallasan, Jeju Island, Korea (한국산 멸종위기종 산굴뚝나비(나비목, 네발나비과)의 분포와 개체군 동태)

  • Kim, Do-Sung;Cho, Young-Bok;Kim, Dong-Soon;Lee, Yeong-Don;Park, Seong-Joon;Ahn, Nung-Ho
    • Korean Journal of Environment and Ecology
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    • v.28 no.5
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    • pp.550-558
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    • 2014
  • This study was conducted to investigate the distribution and the population dynamics of Hipparchia autonoe by using a line transect and Mark-Release-Recapture (MRR) at the Mt. Halla in Jeju Island. The results showed that H. autonoe was found from 1,500 m above the sea level. Total 1,493 H. autonoe with 978 males and 515 females were captured and released in the MRR study site. Among them, 518 individuals including 284 males and 234 females were recaptured. The average survival time was 2.31 days with 2.14 days for males and 3.47 days for females, indicating longer survival time in case of females than males. The daily population size of males estimated in the MRR study site was maintained about 1,000 individuals in July and gradually decreased less than 200 in August. The number of females showed peak at 335 individuals on July 24, and gradually decreased less than 120 in August. Thus, female population was 1/3 of males. The average travel distance of male and female H. autonoe were $116.8{\pm}191.9m$ and $118.4{\pm}161.5m$, respectively, indicating almost same between sexes. H. autonoe in the Mt. Halla formed single population group in the wide meadow around the Baekrokdam Lake. The highest population density of H. autonoe was occurred in the restored area from damages, where host plants such as the sheep's fescue or the food plant are abundant by artificial restoration efforts.

Ecological Characteristics of Cotesia glomerata L. (Hymenoptera: Braconidae) and Its Parasitism Rates for Diamondback Moth (Plutella xylostella L.) in a Kimchi Cabbage Field in The Korean Highland Area (배추나비고치벌(Cotesia glomerata L.)의 생태적 특성 및 고랭지 배추밭에서 배추좀나방(Plutella xylostella L.)에 대한 기생률)

  • Kwon, Min;Kim, Juil;Hong, Eunju;Lee, Yeonggyu
    • Korean journal of applied entomology
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    • v.58 no.4
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    • pp.355-362
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    • 2019
  • Cotesia glomerata L., an internal parasitoid wasp, attacks the larvae of both the cabbage white butterfly (Artogeia rapae L.) and the diamondback moth (Plutella xylostella L.). It can be utilized as a natural biological enemy to control these two insect pests in the summer cabbage fields of the Korean highland areas. The developmental response and sex ratio of C. glomerata to various temperatures and its longevity were examined in the laboratory. The egg-to-larva and pupa stages of C. glomerata were 12.1 ± 2.1 and 6.4 ± 1.8 days, respectively, at 20℃, The developmental threshold for egg-to-larva and pupa stages were 7.7 and 8.5℃, respectively. The sex ratios of C. glomerata when reared under various temperatures were 61.0 ± 4.5% at 15℃, 44.2 ± 1.0% at 20℃, and 39.0 ± 2.3% at 25℃, and the incidence of females increased as the temperature decreased. The longevity of C. glomerata when fed a 10% sugar solution was 20.4 ± 0.2 days, while in adults without any feed, the longevity was 3.6 ± 0.1 days. Indoor reared C. glomerata adults were released into cabbage fields from 2007 to 2018, in early August of each year, and the outdoor parasitism rates were surveyed. The parasitism rates were found to increase gradually as the year passed (Y = 0.2696X + 2.8633, R2 = 0.3994). The highest parasitism rate was observed in 2013 at 7.6%, and the lowest was in 2018 at 6.5 %. These results could be used as basic information for biological control of kimchi cabbage pests at highland fields.

Eleven Species, Including Three Unrecorded Species, Belonging to Coleophoridae (Lepidoptera) Collected from Baengnyeong and Yeonpyeong Islands, Korea (백령도와 연평도에서 채집된 한국산 통나방과 (나비목)의 3 미기록종)

  • Kim, Minyoung;Lee, Bong-Woo;Lee, Heung-Sik;Park, Kyu-Tek
    • Korean journal of applied entomology
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    • v.52 no.4
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    • pp.321-326
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    • 2013
  • Eleven Coleophora species were found in a faunistic survey for the family Coleophoridae (Lepidoptera: Gelechioidea) in Baengnyeong and Yeonpyeong Islands, located near the Northern Limit Line in the West Sea. Among them, three species Coleophora adjunctella Hodgkinson, C. chenopodii Oku, and C. kurokoi Oku have been recorded for the first time in Korea. For the newly recorded species, taxonomic remarks and illustrations of the adults and female genitalia have been provided.