• Title/Summary/Keyword: DO-178

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Developmental and ovipositional charcteristics of Tenodera aridifolia (Mantodea: Mantidae) (왕사마귀(Tenodera aridifolia)의 발육 및 산란 특성)

  • Moon, Hyung cheol;Lim, Ju Rak;Kwon, Suk Ju;So, Sun Young;Cheon, Hyung Kwon
    • Journal of Sericultural and Entomological Science
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    • v.55 no.1
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    • pp.1-5
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    • 2019
  • This study was carried out to investigate the development and oviposition characteristics of Tenodera aridifolia. The nymphs of T. aridifolia grew to adults through 6 and 7 nymphal instars. The percentage of 7 nymphal instars (7-instar type) at 25, 28, and $30^{\circ}C$ were 77.3, 76.2, and 73.5%, respectively. In the 7 instars type, total nymphal periods at 25, 28, and $30^{\circ}C$ were 71.9, 53.5, and 54.7 days, respectively. And, there was no difference in deveolpmental periods between 6- and 7-instar types at all temperatures. Egg periods were 41.3 days at $25^{\circ}C$. Adult longevity of females were 82.0 days, deposited average 3.2 oothecae at intervals of 11.7~18.7 days at $28^{\circ}C$ during her life span. The first ootheca was the largest and $40.5mm{\times}22.0mm{\times}17.3mm$ in size. The number of average eggs per oothecae was 178.6 at $28^{\circ}C$.

Mulseon-Jinsang Related Document Analysis in First Half of the 18th Century (18세기 전반 물선진상 관련 자료 분석 - 『진상별단등록』을 중심으로 -)

  • Jeon, Sang-wuk
    • Korean Journal of Heritage: History & Science
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    • v.47 no.4
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    • pp.178-191
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    • 2014
  • Jin-Sang is a local specialty donation to the palace. A local specialty donation to the palace is classified Jehyang, Bangmul, Mulseon, Medicine according to characteristic, when, use. Among these, Mulseon Jin-Sang is Most foods. And King was reduced Mulseon Jin-Sang in order to obtain a good image of the king. King Suk-Jong was frequently reduced Mulseon. But frequently changes of goods did not reflect to document. So type of goods, quantity is not clear in early 18th century. In 1728, King Yeong-Jo was published a Jingsangbyeldandngrok to clear type of goods, quantity. This book is written area, timing, quantity of Mulseon. Among these, type of goods, quantity are important. This book was written 176 kinds of goods. These goods was most of the fishery. And raw materials are largely accounted. In addition to processing the various creatures become like dried, pickled. By analyzing the regional allocation features, there are many types order by Gyeongsang-do, Hamgyeong-do. Gangwon-do. This area is faced east sea, so many fisheries have become records. In Gyeongsang-do, Cholla-do, these area were occupied a large portion of the fruit. And Jeju Island was assigned oranges. Finally, it has been assigned dried, pickled foods than living thing in distant area.

Development and Verification of Active Vibration Control System for Helicopter (소형민수헬기 능동진동제어시스템 개발)

  • Kim, Nam-Jo;Kwak, Dong-Il;Kang, Woo-Ram;Hwang, Yoo-Sang;Kim, Do-Hyung;Kim, Chan-Dong;Lee, Ki-Jin;So, Hee-Soup
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.50 no.3
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    • pp.181-192
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    • 2022
  • Active vibration control system(AVCS) for helicopter enables to control the vibration generated from the main rotor and has the superb vibration reduction performance with low weight compared passive vibration reduction device. In this paper, FxLMS algorithm-based vibration control software of the light civil helicopter tansmits the control command calculated using the signals of the tachometer and accelerometers to the circular force generator(CFG) is developed and verified. According to the RTCA DO-178C/DO-331, the vibration control software is developed through the model based design technique, and real-time operation performance is evaluated in PILS(processor in-the loop simulation) and HILS(hardware in-the loop simulation) environments. In particular, the reliability of the software is improved through the LDRA-based verification coverage in the PIL environments. In order to AVCS to light civil helicopter(LCH), the dynamic response characteristic model is obtained through the ground/flight tests. AVCS configuration which exhibits the optimal performance is determined using system optimization analysis and flight test and obtain STC certification.

Relationships between Consumer Non-Ethics and Interaction with Salespersons (소비자 비윤리 유형과 판매자와의 상호작용 유형의 관계 - 전라북도 소비자를 중심으로 -)

  • 김정훈;이은희
    • Journal of the Korean Home Economics Association
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    • v.41 no.5
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    • pp.165-178
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    • 2003
  • The purpose of this study was to understand the consumer non-ethical behavior and the interaction with salespersons and their relationships. For this purpose, adults in Chunlabuk-do were surveyed and 675 questionnaires were analyzed using SPSS statistical program. The results of the analysis were as follows: 1. Three dimensions of the consumer non-ethical behaviors were the unconscience, the illegality, and the deception. Two dimensions of the interaction with salespersons were the passive and the assertive interactions. 2. There were two clusters respectively; ethical and non-ethical groups for the consumer non-ethical behavior/ passive and assertive groups for the interaction with salespersons. 3. Generally, the more educated and the older persons were, the less they tended to be ethical and the more passively they tended to interact with the salespersons. 4. There were significant differences between the clusters of consumer non-ethical behavior and those of interaction. The non-assertive interaction group were found more in the non-ethical group and the assertive interaction group more in the ethical groups.

First Report on Fusarium Wilt of Zucchini Caused by Fusarium oxysporum, in Korea

  • Choi, In-Young;Kim, Ju-Hee;Lee, Wang-Hyu;Park, Ji-Hyun;Shin, Hyeon-Dong
    • Mycobiology
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    • v.43 no.2
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    • pp.174-178
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    • 2015
  • Fusarium wilt of zucchini in Jeonju, Korea, was first noticed in May 2013. Symptoms included wilting of the foliage, drying and withering of older leaves, and stunting of plants. Infected plants eventually died during growth. Based on morphological characteristics and phylogenetic analyses of the molecular markers (internal transcribed spacer rDNA and translation elongation factor $1{\alpha}$), the fungus was identified as Fusarium oxysporum. Pathogenicity of a representative isolate was demonstrated via artificial inoculation, and it satisfied Koch's postulates. To our knowledge, this is the first report of F. oxysporum causing wilt of zucchini in Korea.

First Record of the Fraser's Dolphin (Lagenodelphis hosei) in Korean Waters

  • Kim, Hyun Woo;An, Yong-Rock;An, Du Hae;Kim, Zang Geun
    • Animal Systematics, Evolution and Diversity
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    • v.29 no.2
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    • pp.175-178
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    • 2013
  • The Fraser's dolphin, Lagenodelphis hosei has a pantropical distribution. Only several stranding or catch data were available from Japan and Taiwan in the north-west Pacific region. An adult female L. hosei stranded in Jeju-do, Korea. The specimen was identified by external features and skull measurements. It showed the same external appearance ratio and range in the number of teeth with L. hosei former described. The cranial measurements also well corresponded to condylobasal length proportions given in the previous descriptions of the holotype. This is the first record of the species in Korean waters. We report the information on external and osteological characters of the specimen.

Enterobius vermicularis egg positive rate in a primary school in Chungchongnam-do (Province) in Korea

  • Lee, Kyu-Jae;Lee, In-Yong;Im, Kyung-Il
    • Parasites, Hosts and Diseases
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    • v.38 no.3
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    • pp.177-178
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    • 2000
  • The egg Positive rate of Enterobius vernicularis was investigated among students of a primary school and a kindergarten located in the rural area of Tangjin-gun, Chungchongnam-do in December, 1998. Of the 189 examinees, 28 (14.8%) were found to be infected with E. vermicularis by the adhesive cellotape anal swab method . The infection rates ranged from 4.2% to 26.1% among school children, and the highest rate was observed in children attending kindergarten. Three months after treatment with albendazole, four (14.3%) out of 28 infected children still remained infected with E. vermicularis. Through this survey, we were able to determine that E. vemicularis infection is still prevalent among children in rural areas of Korea.

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Identifying Proper Application of Compost Produced in Mixed Crop-Livestock Farming for Rice Cultivation at Wanju Eco-Farming Complex

  • Lee, S.J.;Lee, S.H.;Kim, K.C.;Moon, Y.H.;Lee, K.D.;Hwang, S.W.
    • Korean Journal of Organic Agriculture
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    • v.19 no.spc
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    • pp.178-181
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    • 2011
  • The test was carried out at a test field at the Wanju Eco-Farming Complex from 2009 to 2010 to figure out the proper application of fertilizers when growing rice at the Eco-Farming Complex. The result showed that when compared to the basal application of compost as fertilizer, applying supplementary compost after natural re-seeding of chinese milk vetch (CMV) helped balance soil nutrition and maintained rice yields.

사용후핵연료봉 인출 핵심장치 디지털 목업 검증

  • Kim, Yeong-Hwan;Jo, Yong-Jun;Lee, Yeong-Sun;Lee, Do-Yeon;An, Do-Hui
    • Proceedings of the Korean Radioactive Waste Society Conference
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    • 2016.10a
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    • pp.177-178
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    • 2016
  • 전처리 공정장치 구축에 앞서 정확한 설계와 검증이 선행되어야 한다. 우선 디지털 목업 기술을 통해 설계검증을 철저히 함으로써 공정의 품질을 높이고 공정하자를 최소화 할 수 있다. 전처리 공정 중 사용후핵연료봉 인출 핵심장치의 유지보수를 쉽게 하고, 원격제어 효율을 높이기 위한 모듈화와 그에 대한 모듈화 방안분석을 수행하였다. 이를 위해해 전처리 디지털 목업 시스템 검증 대상과 사용 후핵연료봉 인출 핵심장치 주요모듈을 선정하였으며, 주요 모듈의 모듈화 방안 과 모듈 탈착 시간 검증하였다. 그 결과, 사용후핵연료봉 인출 핵심장치에서는 5개의 주요 모듈로 구성하였으며, 모듈 탈착 시간 검증에서 작업시간은 클램프모듈이 약 190초, 언볼팅, 푸셔 모듈이 140초, 인출 모듈이 160초, 연료봉 밀집 모듈이 80초 소요될 것 분석되었다. 향후 전처리장치별 모듈 분석과 LAYOUT 운영을 포함해서 MSM 시뮬레이터의 디바이스 및 시뮬레이터 시스템 구축을 수행할 것이다.

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A Comparison Study of Magnetic Resonance Imaging Findings and Neurological Signs in Canine Brain Diseases

  • Kim, Min-Ju;Song, Joong-Hyun;Hwang, Tae-Sung;Lee, Hee-Chun;Yu, Do-Hyeon;Kang, Byeong-Teck;Jung, Dong-In
    • Journal of Veterinary Clinics
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    • v.35 no.5
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    • pp.178-183
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    • 2018
  • The object of this study was to compare magnetic resonance imaging (MRI) findings and neurological signs in canine brain diseases. Brain diseases can cause severe neurological deficits and may be life-threatening. The antemortem diagnosis of the brain diseases is difficult for the clinician, since definitive diagnosis is based upon histopathological confirmation. Brain diseases are often associated with specific clinical signs, signalment, progression, and location. Accurate lesion localization through neurological examination and MRI findings is helpful for developing a differential diagnosis. A retrospective study was performed to compare the neurological examination of dogs with suspected brain disease to the MRI findings. Based on this study, neurological examination is a reliable way to localize most brain lesions. Postural reaction deficits do not provide sufficient information to localize lesions. Additionally, not all brain lesions present clinical signs and inflammatory lesions may cause no detectable abnormalities on MRI. Therefore, in clinical practice, a combination of neurological examination and MRI findings recommended for accurate brain lesion localization.