• Venture DIGEST
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• s.120
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• pp.24-26
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• 2008

• Agrochemical news magazine
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• v.22 no.9 s.172
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• pp.42-44
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• 2001

• Korean Journal of Environmental Biology
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• v.18 no.1
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• pp.145-151
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• 2000

The mouthparts of the Apionidae are almost of the same structures as in the Curculionidae feeding soft plant tissues, and two subfamilies in the current system are well supported by their structures. The subfamilies Apioninae and Nanophyinae are clearly characterized as follows. In Apioninae, clypeal margin sinuate; mandibles meet anteropo-steriorly when retracted and more or less curved internally; maxillary palpi two-segmented, with large palpiger; labial palpi one-segmented; prementum parallel-sided, longer than wide. In Nanophyinae, clypeal margin with two to three notches in the middle; mandibles meet anteroposteriorly when retracted and more or less curved internally; maxillary palpi three-segmented, palpiger about as great as stipes; labial palpi two-segmented, separated to each other by the apical protrusion of prementum; prementum about as long as wide. [Insecta, Coleoptera, Comparative morphology, Mouthparts, Apionidae].

• Korean Journal of Agricultural Science
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• v.6 no.2
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• pp.97-104
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• 1979

The present study was attempted to find out the effects of different fertilizer levels on the process and pattern of blast epidemic of Milyang 23 which is a variety belong to Tongil-line of rice and very susceptible to new races of the blast fungus. The results obtained from the study are as follows. In general, the plant become more susceptible to blast with increase of fertilizers applied and there is a close relationship between the incidence of blast and levels of fertilizer. Such a relationship appears more clearly in case of the incidence of leaf blast while it is not so clear in case of the incidence of node blast and neck blast. In spite of low level of fertilizer, both of node and neck blast occur considerably and the difference compared with that of high level of fertilizer is not so great. Therefore, the disease escaping in the node or the neck of panicle by regulation of fertilizer level may be impossible. And also forecasting of the neck blast by estimate of the incidence of leaf blast is very difficult because of discontinuity of the incidence of blast on the leaf and the node.

• Korean journal of applied entomology
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• v.55 no.1
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• pp.67-71
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• 2016

Chiasmia cinerearia (Bremer et Grey) belonging to the subfamily Ennominae(Lepidoptera: Geometridae) is a new forestry pest attacking to Sophora japonica in Gyeonggi province. Chiasmia cinerearia oviposited about 250~300 eggs per female on leaves. Larva had five instar stages. Adults emerged twice a year in early May and late July. The period of one generation was about 48 days. Body length of larvae was 25~30 mm and body color was light green with dark yellow lateral lines in abdomen. The wingspan of adults was 30 to 35 mm in length. The color of forewings was greyish brown with quadrilateral patterns on outer lines.

• Applied Microscopy
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• v.31 no.1
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• pp.91-99
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• 2001

The antennal sensilla of the adult male and female ladybird beetle, Harmonia axyridis (Coleoptera: Coccinellidae) were examined by scanning electron microscopy. Nine types of sensilla were characterized and grouped into 5 morphological classes: $B\ddot{o}hm$, basiconic, chetiform, coeloconlc, and trichoid sensilla. $B\ddot{o}hm$ sensilla were localized on the scape and pedicel, part of the ventral and dorsal proximal side. This placement suggests a role in proportion of antennal position and movement. Basiconic and chetiform sensilla were divided into 3 subtypes by morphology and length differences. Trichoid sensilla are confined to the last 2 flagellum segments on both sexes. Sexual dimorphism of antennal sensilla is limited to the three types of difference. The principal characteristics of this dimorphism are the following: a) The distribution of sensilla was differ from male and female in antennae. b) Males exhibit coeloconic sensilla not present in females; c) Females posses more trichoid sensilla than males. The possible role of specific dilference of the sensilla in intersexual communication is discussed.

• The Journal of the Korea Contents Association
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• v.12 no.11
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• pp.9-19
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• 2012

Time-varying tempo of a song is one of the error sources for the identification of a note duration in automatic music recognition. This paper proposes an improved music transcription scheme equipped with the identification of note duration considering the time-varying tempo. In the proposed scheme the measures are found at first and the tempo, the playing time of each measure, is then estimated. The tempo is then used for resizing each IOI(Inter Onset Interval) length and considered to identify the accurate note duration, which increases the degree of correspondence to the music piece. In the experiment the proposed scheme found the accurate measure position for 14 monophonic children songs out of 16 ones recorded by men and women. Also, it achieved about 89.4% and 84.8% of the degree of matching to the original music piece for identification of note duration and pitch, respectively.

• Journal of Digital Convergence
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• v.11 no.7
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• pp.157-163
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• 2013

In this paper, we propose a vision and depth information based real-time hand gesture interface method using finger joint estimation. For this, the areas of left and right hands are segmented after mapping of the visual image and depth information image, and labeling and boundary noise removal is performed. Then, the centroid point and rotation angle of each hand area are calculated. Afterwards, a circle is expanded at following pattern from a centroid point of the hand to detect joint points and end points of the finger by obtaining the midway points of the hand boundary crossing and the hand model is recognized. Experimental results that our method enabled fingertip distinction and recognized various hand gestures fast and accurately. As a result of the experiment on various hand poses with the hidden fingers using both hands, the accuracy showed over 90% and the performance indicated over 25 fps. The proposed method can be used as a without contacts input interface in HCI control, education, and game applications.

• Proceedings of the Korea Contents Association Conference
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• 2008.05a
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• pp.725-731
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• 2008

In this paper, we propose a novel construction scheme for the personalized e-Learning system based on IRT(item response theory), which can be applied to the content including non-hierarchical and horizontal learning objects in its learning nodes. Especially the proposed system performs tests and re-estimates examinee ability during the learning nodes are operating so that the results are directly applied to the next node. This scheme can be called a dynamic relationship between test and learning which is totally different from conventional customization based on learning procedures separated from test steps. Moreover, we should periodically modify the averages of node difficulties, item parameters, and ability parameters of students so that the system have more accurate personalized learning capability. As a result, this scheme maximizes learning efficiency offering the most appropriate learning objects and items to the individual students according to their estimated abilities and the system itself should obtain continuous improvements by modifying the parameters and fulfilling periodical feedbacks.

• Korean Journal of Weed Science
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• v.15 no.2
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• pp.154-159
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• 1995

Water extracts from Polygonum aviculare and Salix koreansis markedly inhibited the germination of lettuce and rice seeds, indicating the presence of biologically active substances. The biochemical substances such as salicylic and+vanillic acid, tannic acid + gallic acid, p-coumaric acid, p-cressol, sinapic acid and catechol etc. belonging to phenolic compounds were detected in the cultured cells, suggesting that the secondary metabolites can be synthesized in plant cell and tissue culture. In addition, fatty acid like linolenic acid and organic acid such as oxalic acid were presented in the highest amount, 3.7 mg/g and 14.288 mg/g, respectively, which seem to be related to exhibiting phytotoxicity of P. aviculare. Petroleum ether extract exhibited another potential relating to inhibitory effect which needs further investigation. Calli from two plant sources were easily introduced by uses of 1.0 mg/l of 2.4-D and 0.1 to 0.2 mg/l of BAP in MS basal medium which can be implemented for a large scale production through cell culture.