• Journal of the Korean Society for Library and Information Science
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• v.53 no.2
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• pp.267-294
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• 2019

This study conducted analysis on forms and contents of Story of Insects (Gonchung Iyagi) and About Insects (Gonchung-gi), writings of biologist Jo Bok-seong published in 1948 to examine characteristics of two books and compare them. Story of Insects was made in the form of front cover-title page-foreword-table of contents-main text-copyright clause-advertisement-back cover, with the book size being A5 format. Contents of the book were divided into nine groups according to the characteristics of 65 species insects, to describe their characteristics. While, About Insects was made in the form of cover-title page-foreword-table of contents-main text-copyright clause-publication message of Eulyoo Mungo-advertisement-back cover, with the book size of A6 format. Contents of the book were divided into the author's own 11 groups according to the characteristics of 56 species insects, to describe their characteristics. About Insects being Eulyoo Publishing Co. and Story of Insects being Association of Joseon Children's Culture (abbreviated as Ahyeop) - sister company of Eulyoo Publishing Co. - but with the same basis.

• Korean journal of applied entomology
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• v.49 no.4
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• pp.357-362
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• 2010

Soybean seed injury was analyzed in the experiments in which the bean bug, Riptortus pedestris(Hemiptera: Alydidae), was released into screen-caged pots containing full seed stage(R6) of soybean. When the different stages of insects, from the 3rd instar nymphs to adults, were released into pots during 8 days in soybean R6 stage, soybean seeds with injury marks (B-type seeds) increased. The weight reduction ratio in B-type seeds was highest in the injury by the 5th instar nymphs, while the daily-produced number ratio of B-type seeds was small in the treatment. In the injury by the different number of adult released into pots, 4, 8, 16 adults caused a significant increase of B-type seeds, while 16 adults caused the significant increase of the deformed (C-type) seeds. In the injury by the different release period of adults, the total number of pods was not significantly different among treatments, while the total seed number harvested was significantly small in the release for 48 days. The release for 8 and 16 days caused a significant increase of B-type seeds, while the release for 48 days caused the increase of C-type seeds. The results indicated that injury of soybean R6 stage by the bean bug produced soybean seeds with distinct injury marks at relatively low density and during short term attack period, while it produced deformed seeds at high density and during long attack period.

• Proceedings of the Korean Society of Applied Entomolohy Conference
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• 2003.10a
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• pp.119-119
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• 2003

• Korean journal of applied entomology
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• v.30 no.1
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• pp.94-99
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• 1991

The daily rhythm of sex pheromone production and release by females of the black pine base scale, Matsucoccus thunbergianae Miller and Park, was demonstrated by studying the amounts of pheromone possessed and released by females, periodically after emergence. Cycles of both pheromone production and release had daily peaks between 8 a.m. and 2 p.m., and has marked decreases after 4 p.m. It appeared that the amounts of pheromone gradually decreased three days after the emergence. Significance in synchronization of the daily rhythm of female pheromone release and activities of males and females with reference to reproductive success in this species is discussed.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.34 no.8
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• pp.55-62
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• 2006

This paper presents experimental evaluation of an insect-mimicking flapping-wing device actuated by a unimorph piezoceramic actuator. Length of each rod and hinge point in the linkage/amplification system are carefully chosen such that the resulting wing motion can mimic clapping of wings in a real insect at the end of upstroke. In addition to this, a pair of corrugated wings are fabricated mimicking zig-zag cross section of a real insect wing. Thanks to the two additional implementation, the improved flapping wing device can generate a larger lift force than the previous model even though area of the new wing is about 50% less than that of the previous wing. In this work, effects of the wing clapping, the wing corrugation, and the input wave form on the lift force generation have been also experimentally investigated. Finally, the vortex generated by the flapping device has been captured by a high speed camera, showing that vortices are produced during up- and down-strokes.

• Korean journal of applied entomology
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• v.27 no.1
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• pp.41-46
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• 1988

Growth of Metarrhizium flavoviride var. minus and Hirsut lle strigosa showed good yield in the carbon source media adding dextrose, starch and saccharose, but Hirsutella sp. from korea greq well in the other media except in the dextrose media. Yeast extract was necessary for the mecelial growth of the fungi, but the fungi tested in this experiment showed a difference in the amount of required yeast extract. Growth of Nomurea rileyi was fastidious in the carbon and nitrorgen sourced media and the optimum pH of the media for growth was at 6.7. Sporulation of M. Flavoviride var. minus was high on media, containing 1%~2% of yeast extract as nitrogen and carbon source media, but N. rileyi sporulated abundantly on the media with nitrogen and dextrose.

• Journal of the Korea Society of Computer and Information
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• v.14 no.12
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• pp.55-62
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• 2009

This paper proposes a decision method of fuzzy weights by utilizing degrees of contribution in order to classify insect footprint patterns having difficulties to classify species clearly. Insect footprints revealed delicately in the form of scattered spots since they are very small. Therefore it is not easy to define shape of footprints unlike other species, and there are lots of noises in the footprint patterns so that it is difficult to distinguish those from correct data. For these reasons, the extracted feature set has obvious feature values with some uncertain feature values, so we estimate weights according to degrees of contribution. If the one of feature values has distinct difference enough to decide a class among other classes, high weight is assigned to make classification. A calculated weight determines the membership values by fuzzy functions and objects are classified into the class having a superior value.atu present experimental resultseighrontribution. Iinsect footprints with noises by the proposed method.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.33 no.6
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• pp.100-107
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• 2005

• Korean journal of applied entomology
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• v.42 no.4
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• pp.289-291
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• 2003

A new species of Torodora Meyrick, T. pseudogalera sp. nov. is described from Taiwan. Photos of adult and the male and female genitalia are provided.

• Proceedings of the Korean Society of Applied Entomolohy Conference
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• 2003.10a
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• pp.80-80
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• 2003