• Title/Summary/Keyword: Bug

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Insects and Pathogens Associated with Rice Grain Discoloration and Their Relationship in the Philippines (병해충과 변색미(變色米) 발생(發生)과의 관계(關係)에 관한 연구(硏究))

  • LEE, S.C.;Alvenda, M.E.;Bonman, J.M.;Heinrichs, E.A.
    • Korean journal of applied entomology
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    • v.25 no.2 s.67
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    • pp.107-112
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    • 1986
  • Species of pathogens and insects associated with grain discoloration in the Philippines were indentified. Leptocorisa oratorios was the most dominant insect species causing discoloration. Pathogenicity tests of fungal organisms isolated from discolored grains showed that Drechslera oryzae, Curvularia lunata, Trichoconiella padwickii, Sarocladium oryzae, Alternaria tenuis, and Fusarium solani were the common pathogens responsible for 'dirty panicle' disease of rice. Discoloration incidence was higher on treatment when both pests were present than when they occurred singly. The discoloration severity was attributed to the pathogens whereas rice bug caused a high decrease in grain weight and unfilled grains. Rice bug feeding on grains enhances the infection caused by the pathogen. Due to this, the quantity and quality of grains produced were affected, resulting in yield reduction.

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Influence of shading and polyethylen vinyl mulching on growth and yield of Cinidium officinale Makino (차광(遮光), 비닐피복(被覆)이 궁궁이(천궁(川芎))의 생육(生育) 및 수량(收量)에 미치는 영향(影響))

  • Hwang, Hyung-Baek;Kim, Jae-Chul;Choi, Jang-Soo;Choi, Boo-Sull
    • Korean Journal of Medicinal Crop Science
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    • v.3 no.2
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    • pp.156-164
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    • 1995
  • The study was carried out to elucidate the influenced of shading and mulching with polyethylen vinyl on growth and yield of Cinidium officinale Makino, and improve the cultivation method of those medicinal plants in northern area of Gyeong-buk province, Korea. Top fresh weight of Cinidium officinale Makino was increased by both 35 % and 55% shading compared to the non-shadingand decreased by 75 % shading, but that of Ligusticum chuanxing Hart. Was decreased by the shading tested The summer wilt of Cinidium officinale Makino severely occurred in non-shading but greatly reduced by 55 % or 75 %shading, while no difference was observed in Ligusticum chuanxing Hort, between the shading and the non-shading. Dry root yield Cinidium officinale Makino was increased by 17 % and 19 % in 35 % and 55 % shading levels, respectively, compared to the dry root yield(254kg/10a) in non-shading. However, it was decreased in Ligusticum chuaxing Hort. by the shading. Emergence ratio of Cinidium officinale Makino was increased by black polyethylen vinyl mulch but decreased by transparent polyethylen vinyl mulch, compard to non-mulch. Polyethylen vinyl mulch increa­sed the top fresh weight of Cinidium officinale Makino Especialy black polythylen vinyl mulch was very effective on increasing the top fresh weight. Dry root yield of Cinidium officinale Makino was increased by 32 % and 30 %, respectively, compared to the non-shading.

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Landscape Analysis of the Effects of Artificial Lighting around Wetland Habitats on the Giant Water Bug Lethocerus deyrollei in Jeju Island

  • Choi, Ho;Kim, Heung-Tae;Kim, Jae-Geun
    • Journal of Ecology and Environment
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    • v.32 no.2
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    • pp.83-86
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    • 2009
  • We conducted a landscape analysis to investigate the possibility of adverse effects of anthropogenic light sources, such as roads and residential buildings, on Lethocerus deyrollei on Jeju Island, Wetlands inhabited by L. deyrollei had fewer anthropogenic structures within a 3 km radius that had the potential to produce artificial light at night than wetlands not inhabited by L. deyrollei, In particular, the presence of artificial lights within a 1 km radius appears to reduce the probability of inhabitation by L. deyrollei, Our results suggest that artificial light sources may be critical determinants of L. deyrollei inhabitation patterns in a landscape, and that habitats that have a buffer area of at least 600$\sim$700 m radius free from residential buildings are the most appropriate habitats for L. deyrollei.

Robotics Projects at Pusan National University

  • Kwak, Seung-Chul;Sung, Ji-Hoon;Shim, In-Bo;Yoon, Joong-Sun
    • 제어로봇시스템학회:학술대회논문집
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    • 2004.08a
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    • pp.814-819
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    • 2004
  • Soft engineering, based on symbiotic coexistence of human, machines and environment, is a new engineering field to explore the proper technology and the proper way of engineering. To explore soft engineering intents easily, various robot projects at Pusan National University conducted are presented. Thought experiment, interactive e-leaning, rapid prototyping engineering, biomimciry, tangibility, and ubiquity are concepts to be explored. Thought experiments projects are organized and performed, which include robot assembly game, Turing test, and robotics in science fiction. "Junk robot project" and "ubiquitous Pusan National University (u-PNU) project" have been organized. Also, bug robot project, interactive robot project, and interactive emotional robot projects are introduced. Weekly science fiction films are shown and discussed.

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Study on Consumption and Nutrition of Marketing Fermented Milk (시판유산균(市販乳酸菌) 발효음료(醱酵飮料)의 섭취실태(攝取實態)와 그 영양성(營養性)에 관(關)한 연구(硏究))

  • Rho, Sook-Nyung
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.10 no.1
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    • pp.123-135
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    • 1981
  • The purpose of this paper is investigation on the consumption and the nutrition of marketing fermented milk in Korea. The objectives were selected randomly from 3 cities in Jeonbug province, Jeonju, Iri, and Gunsan, and they were grouped into students, housewives, patients, and officers from July to September 1980. (male: 591, Female; 673, total: 1,264). Findings in detail are summarized in Table 1.15. Among the many kinds of marketing fermented milk in Korea, products from the five manufacturers, whose numbers of Lactic acid acid bacteria were standarized, were sampled and divided into groups, A,B,C,D,E. The constituents of nutrition of them were analyzed by HPLC and AAS.

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Improving Fault Traceability of Web Application by Utilizing Software Revision Information and Behavior Model

  • Baek, Seungsuk;Lee, Jung-Won;Lee, Byungjeong
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.12 no.2
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    • pp.817-828
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    • 2018
  • Modern software, especially web-based software, is broadly used in various fields. Most web applications employ design patterns, such as a model-view-controller (MVC) pattern and a factory pattern as development technology, so the application can have a good architecture to facilitate maintenance and productivity. A web application, however, may have defects and developers must fix the defects when a user submits bug reports. In this paper, we propose a novel approach to improving fault traceability in web application by using software revision information and software behavior model to reduce costs and effectively handle the software defect. We also provide a case study to show effectiveness of our approach.

Studies on Pest Insects of Crude Drugs (생약 및 한약재의 저장 중 발생하는 곤충류)

  • Toh, Chung-Ae
    • Korean Journal of Pharmacognosy
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    • v.29 no.4
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    • pp.365-373
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    • 1998
  • In order to estimate accurate quality of crude drugs in which pest was found during the storage, damaged 15 items were collected on current markets. We identified insect name by investigation of insect morphology, bug cluster, and morphology of damaged crude drugs. Three kind of pests were identified in the above 15 items as follows: A: Pyralis sp. (Pyralidae) was observed in damaged Platycodi Radix. B: Anthreus verbasci (Anobiidae) was found out in damaged Angelicae gigantis Radix, and Dioscoreae Rhizoma. C: Stegobium pamceum (Anobiidae) was discovered in the 12 crude drugs as follows: Puerariae Radix, Angelicae koreanae Radix, Angehcae tenuissimae Radix, Codonopsis Radix, Ledebouriellae Radix, Ginseng Radix alba, Angelicae dahuricae Radix, Belamcandae Rhizoma, Paeoniae Radix, Cnidii Rhizoma, Alismatis Rhizoma, and Fritillariae Bulbus.

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Analysis of Potential Bugs using Topic Model of Open Source Project (오픈소스 프로젝트의 토픽 모델링을 통한 잠재결함 분석 연구)

  • Lee, Jung-Been;Lee, Taek;In, Hoh Peter
    • Annual Conference of KIPS
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    • 2017.04a
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    • pp.551-552
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    • 2017
  • 하나의 프로젝트에는 다양한 기능과 역할을 가진 소스코드가 존재한다. 그러나 기존 정적 분석 도구들은 이러한 특성을 고려하지 않고, 모든 소스코드에 동일한 탐색 정책과 우선순위를 적용하고 있다. 본 연구에서는 오픈소스 프로젝트로부터 수집한 소스코드들을 토픽모델링을 이용하여 특정 토픽으로 분류하고, 분류된 토픽에 해당되는 코드 안에서 높은 영향력을 갖는 잠재결함(Potential Bug)의 특징을 분석하였다. 이 결과를 바탕으로 개발자에게 개발 중인 소스코드의 특성에 따라 어떤 잠재결함에 더 우선순위를 두어야 하는지에 대한 지침을 제공할 수 있다.