• International Journal of Industrial Entomology and Biomaterials
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• 제37권2호
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• pp.33-35
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• 2018

In Korea, species of the genus Ptecticus Loew, 1855 (Family Stratiomyidae) have been known as three species, P. aurifer (Walker, 1854), P. matsumurae Lindner, 1936 and P. japonicus (Thunberg, 1789) (= P. tenebrifer (Walker, 1849)). Additionally, an unrecorded species, P. sinchangensis ${\hat{O}}uchi$, 1938, was found in Korea. We therefore report the species for the first time in Korea with morphological diagnosis and key for the identification of the Korean species of the genus. In total, the members of the genus Ptecticus are officially recognized as four species in Korea.

• 대한족부족관절학회지
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• 제22권4호
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• pp.184-184
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• 2018

• Animal Systematics, Evolution and Diversity
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• 제37권1호
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• pp.33-38
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• 2021

Three species of Spilomelinae, Camptomastix septentrionalis Inoue, 1982, Omiodes indistinctus (Warren, 1892) and Piletocera aegimiusalis (Walker, 1859), are reported for the first time from Korea. Camptomastix septentrionalis is distinguished from Camptomastix hisbonalis (Walker, 1859) in the smaller body size, the lack of a clear discal spot on the forewings, and having the less protruding costa of the valva in the male genitalia and the smaller antrum in the female genitalia. Omiodes indistinctus is distinguished from Omiodes tristrialis(Bremer, 1864) in having the narrower forewings with the faded postmedian and subbasal lines and a densely-setose, sclerotized area on the terminal part of uncus dorsally in the male genitalia. Piletocera aegimiusalis is distinguished from Piletocera sodalis(Leech, 1889) in the larger body size and the lack of a pale yellow patch on the hindwings. Photos of the external and genital features are provided for the three newly-recorded spilomeline species.

• Communications for Statistical Applications and Methods
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• 제30권3호
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• pp.273-289
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• 2023

In this paper, we develop a new time series model for predicting IPO (initial public offering) data with non-negative integer value. The proposed model is based on integer-valued autoregressive (INAR) model with a Poisson thinning operator. Just as the heterogeneous autoregressive (HAR) model with daily, weekly and monthly averages in a form of cascade, the integer-valued heterogeneous autoregressive (INHAR) model is considered to reflect efficiently the long memory. The parameters of the INHAR model are estimated using the conditional least squares estimate and Yule-Walker estimate. Through simulations, bias and standard error are calculated to compare the performance of the estimates. Effects of model fitting to the Korea's IPO are evaluated using performance measures such as mean square error (MAE), root mean square error (RMSE), mean absolute percentage error (MAPE) etc. The results show that INHAR model provides better performance than traditional INAR model. The empirical analysis of the Korea's IPO indicates that our proposed model is efficient in forecasting monthly IPO volumes.

• 한국응용곤충학회지
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• 제14권1호
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• pp.21-22
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• 1975

• 한국응용곤충학회:학술대회논문집
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• 한국응용곤충학회 2002년도 합동 춘계 학술발표회
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• pp.58-58
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• 2002

• 한국우주과학회:학술대회논문집(한국우주과학회보)
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• 한국우주과학회 2001년도 한국우주과학회보 제10권1호
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• pp.26-26
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• 2001

No Abstract, See Full Text

• 타이어
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• 통권144호
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• pp.2-5
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• 1989

'본고는 타이어의 인너라이너 재료로서 널리 각광을 받고 있는 브롬화부틱고무, 염화부틸고무의 화학 및 배합이론과 이들 단일배합 및 천연고무와의 블렌드가공과 가황특성에 대하여 검토한 Canada Polysar Limited의 J. Walker의 보고를 요약한 것이다.'

• 천문학회보
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• 제34권1호
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• pp.148.1-148.1
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• 2009

• 한국응용곤충학회지
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• 제33권2호
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• pp.81-87
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• 1994

본 실험은 미국흰불나방 (Hyphantria cunea Drury)과 이화명나방 (Chilo suppressalis Walker)에 대한 chlorflyazuron, diflubenzuron, pyiproxyfen 과 tebufenozide 와 같은 IGRs의 독성효과를 조사하기 위해 수행되었다. 미국흰불나방에서, 1령충의 {{{{ { LC}_{50 } }}}}치 (ppm)기준 2령충~5령충의 내성비 범위는 chlorflua-zuron, diflubenzur on, pyriproxyfen과 tebufenozide에서 각각 1.07~3.58, 1.13~6.06, 1.02~3.23, 1.05~6.64이었다. 이화명나방에서, 1령충에 대한 3령충의{{{{ { LC}_{50 } }}}}치 (p pm)의 내성비는 chlorflua-zuron, diflubenzuron, pyriproxyfen과 tebufenozide에서 각각 2.86, 2.60, 19.80, 15.30이었다.