• 제목/요약/키워드: Field report

검색결과 1,669건 처리시간 0.032초

Post-Treatment of Printed Carbon Nanotubes for Vertical Alignment

  • Kim, Yong-C.;Sohn, K.H.;Cho, Y.M.;Yoo, Eun-H.
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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    • pp.692-695
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    • 2004
  • Fabrication of photosensitive carbon nanotubes paste and its post-treatment has been developed for high resolution with good electron emission uniformity. We report novel post-treatment techniques including rubber-rolling and multiple field emission cycling from which we could improve the field emission properties of printed carbon nanotubes. These techniques would be easily applicable to large area field emission display using paste of carbon nanotubes

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Effect of dipole electric field on low-voltage pentacene thin film transistors

  • Kim, Kang-Dae;Song, Chung-Kun
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권2호
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    • pp.1636-1638
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    • 2007
  • We report on low-voltage pentacene TFTs with a Al2O3/OTS as a gate dielectric. Improving device characteristics, we performed chemical modification of self-grown Al2O3 surface with an octadecyltrichlorosilane(OTS) self-assembled monolayer(SAM). As the result of this combination, the mobility was improved from 0.3 to $0.45\;cm^2/Vs$. In addition, we examined that the SAM dipole electric field have an influence on gate leakage current, transfer and output characteristics.

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토픽 모델과 버그 리포트 메타 필드를 이용한 버그 심각도 예측 방법 (Predicting Bug Severity by utilizing Topic Model and Bug Report Meta-Field)

  • 양근석;이병정
    • 정보과학회 컴퓨팅의 실제 논문지
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    • 제21권9호
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    • pp.616-621
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    • 2015
  • 최근 개발된 소프트웨어들은 많은 수의 컴포넌트들을 가지고 있으며, 복잡성 또한 증가하고 있다. 지난 해 오픈소스 프로젝트 (Eclipse, Mozilla)에서는 하루에 약 375건의 버그 리포트가 제출되었다. 이렇게 증가된 버그 리포트들로 인해 개발자들의 시간과 노력이 불필요하게 증가하고 있다. 또 버그 심각도는 품질 보증 담당자, 프로젝트 매니저 또는 개발자에 의해 직접 판단되므로 그들에 의해 주관적으로 결정된다. 또한 많은 수의 버그 리포트 때문에 심각도 판단에서 실수할 수도 있다. 따라서 본 논문에서는 버그 심각도 예측 방법을 제안한다. 먼저, 새로운 버그 리포트가 제출되면, 유사한 토픽을 찾아내고 버그 리포트의 메타 필드를 이용하여 후보 버그 리포트의 범위를 줄인다. 추출된 버그 리포트를 Naive Bayes Multinomial 기법에 훈련하여 새로운 버그 리포트의 심각성을 예측한다. 오픈소스 프로젝트에 본 방법을 적용하여 본 방법이 버그 심각도 예측에 효과적이라는 것을 보인다.

IEC 61850기반 IED 대상 리포트 적합성 시험에 관한 연구 (Study on the Report Conformance Test of IEC 61850 based IED)

  • 이남호;장병태;김지희;송인준;안용호
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2008년도 제39회 하계학술대회
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    • pp.241-242
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    • 2008
  • Korea Electric Power Research Institute has being carried out an IEC 61580 communication service test on IED trial products developed related to power IT project, "The verification of Performance of the Substation Automation System and Its Field Test". This paper presents reporting services of IEC 61850-8-1 and related UCA Test procedures, reporting test items are widely divided into unbuffered report and buffered report and this paper is dealing with unbuffered report.

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긍정적인 항공정비안전보고문화에 관한 연구 (A Study on Positive Safety Reporting Culture in Aviation Maintenance)

  • 김천용
    • 한국항공운항학회지
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    • 제20권2호
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    • pp.64-71
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    • 2012
  • In field of Aviation Maintenance, honest and expedite voluntary report of potential hazard provide airworthiness aircraft by eliminating or avoiding from dangerous factors of aircraft. Although it supports for safety flight, voluntary incident reporting system consist of Aviation practitioner and require cooperation of practitioner due to there are no forcibleness. These occur when positive safety culture and report culture are settled. In this regard, this study firstly identify the current status of Aviation Safety Reporting System in Korea. Then, this article also find out the level of reporting culture of the AMT(Aircraft Maintenance Technicians) and problems in reporting system. Finally, suggestions on the model of positive safety reporting culture in a field of aircraft maintenance.

Probing and Control of Surface Polarization Phenomena in Molecular Films for Organic Electronics

  • Iwamoto, Mitsumasa
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2007년도 하계학술대회 논문집 Vol.8
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    • pp.3-4
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    • 2007
  • Orientational ordering of polar molecules and excess charges at the interface are main origins of surface polarization. For organic electronics, probing and control of these two surface polarization phenomena are key issues. In this presentation, I report a novel electrical measurement that can directly probe orientational dipolar motion in surface monolayers by Maxwell-displacement-current, and also report a novel optical technique that allows carrier motions in organic materials by measuring the optical second harmonic signals activated by the electric field. Then I discuss how the control of dipolar motions and carrier motions are linked to organic electronics applications such as organic field effect transistors.

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First Report of Albifimbria verrucaria and Deconica coprophila (Syn: Psylocybe coprophila) from Field Soil in Korea

  • Gurung, Sun Kumar;Adhikari, Mahesh;Kim, Sang Woo;Lee, Hyun Goo;Jun, Ju Han;Gwon, Byeong Heon;Lee, Hyang Burm;Lee, Youn Su
    • 한국균학회지
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    • 제47권3호
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    • pp.209-218
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    • 2019
  • During a survey of fungal diversity in Korea, two fungal strains, KNU17-1 and KNU17-199, were isolated from paddy field soil in Yangpyeong and Sancheong, respectively, in Korea. These fungal isolates were analyzed based on their morphological characteristics and the molecular phylogenetic analysis of the internal transcribed spacer (ITS) rDNA sequences. On the basis of their morphology and phylogeny, KNU17-1 and KNU17-199 isolates were identified as Albifimbria verrucaria and Deconica coprophila, respectively. To the best of our knowledge, A. verrucaria and D. coprophila have not yet been reported in Korea. Thus, this is the first report of these species in Korea.

First Report of Anthracnose Disease Caused by Colletotrichum gloeosporioides in Stonecrop

  • Jeon, Chang Wook;Kwak, Youn-Sig
    • 농업생명과학연구
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    • 제50권5호
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    • pp.251-255
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    • 2016
  • In year of 2013, anthracnose disease symptoms were observed on stem of stonecrop in a plant resource field, Southern Forest Resource Research Center, Jinju, South Korea. The disease symptoms were appeared 2-5 cm smudged irregular black spot color on the plant stems. Suspected pathogen was isolated from the lesion with surface sterilization method and identified it as Colletotrichum gloeosporioides by morphological characteristics and phylogenetic analyses. Artificially inoculated the isolated pathogen led to the similar disease symptom as originally observed in the field. The fungal pathogen was re-isolated from the inoculated lesion and it exhibited the same characteristics compared to the original isolate. This is the first report of anthracnose of stonecrop grown in open fields, caused by Colletotrichum gloeosporioides in Korea.

동측 반맹과 안면실인증을 호소하는 뇌경색 환자 한방복합치료 1례 (A Case of Combined Korean Medicine Treatment for Homonymous Hemianopia and Prosopagnosia after Ischemic Stroke)

  • 김근영;박호정;이유진;조기호;문상관;정우상;권승원;진철
    • 대한중풍순환신경학회지
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    • 제22권1호
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    • pp.21-30
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    • 2021
  • ■ Background Patients with posterior cerebral artery infarction could complain of visual field defects or prosopagnosia that does not recognize a person's face. However, there has been no standardized treatment for these symptoms. ■ Case report A 57-year-old male patient complained homonymous hemianopia and prosopagnosia after posterior cerebral artery infarction. After combined Korean medicine treatment for 49 days, subjective visual field was improved and the discomfort associated with visual field defect and the disability of recognizing people was decreased. Evaluations were took place by assessing visual field using Automated Perimetry and Confrontation visual field exam. Discomfort caused by visual field defects or prosopagnosia was evaluated by visual analog scale. The patient was treated with acupuncture, moxibustion, and herbal medications. ■ Conclusion The present case report suggests that combined Korean medicine treatment might be effective to resolution of homonymous hemianopia and prosopagnosia after stroke.

잠재 디리클레 할당(LDA)을 이용한 항공안전 의무보고 토픽 예측 모형 (Aviation Safety Mandatory Report Topic Prediction Model using Latent Dirichlet Allocation (LDA))

  • 김준환;백현진;전성진;최영재
    • 한국항공운항학회지
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    • 제31권3호
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    • pp.42-49
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    • 2023
  • Not only in aviation industry but also in other industries, safety data plays a key role to improve the level of safety performance. By analyzing safety data such as aviation safety report (text data), hazard can be identified and removed before it leads to a tragic accident. However, pre-processing of raw data (or natural language data) collected from each site should be carried out first to utilize proactive or predictive safety management system. As air traffic volume increases, the amount of data accumulated is also on the rise. Accordingly, there are clear limitation in analyzing data directly by manpower. In this paper, a topic prediction model for aviation safety mandatory report is proposed. In addition, the prediction accuracy of the proposed model was also verified using actual aviation safety mandatory report data. This research model is meaningful in that it not only effectively supports the current aviation safety mandatory report analysis work, but also can be applied to various data produced in the aviation safety field in the future.